1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This is the new netlink-based wireless configuration interface.
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2021 Intel Corporation
9 */
10
11 #include <linux/if.h>
12 #include <linux/module.h>
13 #include <linux/err.h>
14 #include <linux/slab.h>
15 #include <linux/list.h>
16 #include <linux/if_ether.h>
17 #include <linux/ieee80211.h>
18 #include <linux/nl80211.h>
19 #include <linux/rtnetlink.h>
20 #include <linux/netlink.h>
21 #include <linux/nospec.h>
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <net/net_namespace.h>
25 #include <net/genetlink.h>
26 #include <net/cfg80211.h>
27 #include <net/sock.h>
28 #include <net/inet_connection_sock.h>
29 #include "core.h"
30 #include "nl80211.h"
31 #include "reg.h"
32 #include "rdev-ops.h"
33
34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
35 struct genl_info *info,
36 struct cfg80211_crypto_settings *settings,
37 int cipher_limit);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam;
41
42 /* multicast groups */
43 enum nl80211_multicast_groups {
44 NL80211_MCGRP_CONFIG,
45 NL80211_MCGRP_SCAN,
46 NL80211_MCGRP_REGULATORY,
47 NL80211_MCGRP_MLME,
48 NL80211_MCGRP_VENDOR,
49 NL80211_MCGRP_NAN,
50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
51 };
52
53 static const struct genl_multicast_group nl80211_mcgrps[] = {
54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
60 #ifdef CONFIG_NL80211_TESTMODE
61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
62 #endif
63 };
64
65 /* returns ERR_PTR values */
66 static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net * netns,struct nlattr ** attrs)67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
68 {
69 struct cfg80211_registered_device *rdev;
70 struct wireless_dev *result = NULL;
71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
73 u64 wdev_id;
74 int wiphy_idx = -1;
75 int ifidx = -1;
76
77 ASSERT_RTNL();
78
79 if (!have_ifidx && !have_wdev_id)
80 return ERR_PTR(-EINVAL);
81
82 if (have_ifidx)
83 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
84 if (have_wdev_id) {
85 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
86 wiphy_idx = wdev_id >> 32;
87 }
88
89 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
90 struct wireless_dev *wdev;
91
92 if (wiphy_net(&rdev->wiphy) != netns)
93 continue;
94
95 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
96 continue;
97
98 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
99 if (have_ifidx && wdev->netdev &&
100 wdev->netdev->ifindex == ifidx) {
101 result = wdev;
102 break;
103 }
104 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
105 result = wdev;
106 break;
107 }
108 }
109
110 if (result)
111 break;
112 }
113
114 if (result)
115 return result;
116 return ERR_PTR(-ENODEV);
117 }
118
119 static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net * netns,struct nlattr ** attrs)120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
121 {
122 struct cfg80211_registered_device *rdev = NULL, *tmp;
123 struct net_device *netdev;
124
125 ASSERT_RTNL();
126
127 if (!attrs[NL80211_ATTR_WIPHY] &&
128 !attrs[NL80211_ATTR_IFINDEX] &&
129 !attrs[NL80211_ATTR_WDEV])
130 return ERR_PTR(-EINVAL);
131
132 if (attrs[NL80211_ATTR_WIPHY])
133 rdev = cfg80211_rdev_by_wiphy_idx(
134 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
135
136 if (attrs[NL80211_ATTR_WDEV]) {
137 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
138 struct wireless_dev *wdev;
139 bool found = false;
140
141 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
142 if (tmp) {
143 /* make sure wdev exists */
144 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
145 if (wdev->identifier != (u32)wdev_id)
146 continue;
147 found = true;
148 break;
149 }
150
151 if (!found)
152 tmp = NULL;
153
154 if (rdev && tmp != rdev)
155 return ERR_PTR(-EINVAL);
156 rdev = tmp;
157 }
158 }
159
160 if (attrs[NL80211_ATTR_IFINDEX]) {
161 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
162
163 netdev = __dev_get_by_index(netns, ifindex);
164 if (netdev) {
165 if (netdev->ieee80211_ptr)
166 tmp = wiphy_to_rdev(
167 netdev->ieee80211_ptr->wiphy);
168 else
169 tmp = NULL;
170
171 /* not wireless device -- return error */
172 if (!tmp)
173 return ERR_PTR(-EINVAL);
174
175 /* mismatch -- return error */
176 if (rdev && tmp != rdev)
177 return ERR_PTR(-EINVAL);
178
179 rdev = tmp;
180 }
181 }
182
183 if (!rdev)
184 return ERR_PTR(-ENODEV);
185
186 if (netns != wiphy_net(&rdev->wiphy))
187 return ERR_PTR(-ENODEV);
188
189 return rdev;
190 }
191
192 /*
193 * This function returns a pointer to the driver
194 * that the genl_info item that is passed refers to.
195 *
196 * The result of this can be a PTR_ERR and hence must
197 * be checked with IS_ERR() for errors.
198 */
199 static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net * netns,struct genl_info * info)200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
201 {
202 return __cfg80211_rdev_from_attrs(netns, info->attrs);
203 }
204
validate_beacon_head(const struct nlattr * attr,struct netlink_ext_ack * extack)205 static int validate_beacon_head(const struct nlattr *attr,
206 struct netlink_ext_ack *extack)
207 {
208 const u8 *data = nla_data(attr);
209 unsigned int len = nla_len(attr);
210 const struct element *elem;
211 const struct ieee80211_mgmt *mgmt = (void *)data;
212 unsigned int fixedlen, hdrlen;
213 bool s1g_bcn;
214
215 if (len < offsetofend(typeof(*mgmt), frame_control))
216 goto err;
217
218 s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
219 if (s1g_bcn) {
220 fixedlen = offsetof(struct ieee80211_ext,
221 u.s1g_beacon.variable);
222 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
223 } else {
224 fixedlen = offsetof(struct ieee80211_mgmt,
225 u.beacon.variable);
226 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
227 }
228
229 if (len < fixedlen)
230 goto err;
231
232 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
233 goto err;
234
235 data += fixedlen;
236 len -= fixedlen;
237
238 for_each_element(elem, data, len) {
239 /* nothing */
240 }
241
242 if (for_each_element_completed(elem, data, len))
243 return 0;
244
245 err:
246 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
247 return -EINVAL;
248 }
249
validate_ie_attr(const struct nlattr * attr,struct netlink_ext_ack * extack)250 static int validate_ie_attr(const struct nlattr *attr,
251 struct netlink_ext_ack *extack)
252 {
253 const u8 *data = nla_data(attr);
254 unsigned int len = nla_len(attr);
255 const struct element *elem;
256
257 for_each_element(elem, data, len) {
258 /* nothing */
259 }
260
261 if (for_each_element_completed(elem, data, len))
262 return 0;
263
264 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
265 return -EINVAL;
266 }
267
268 /* policy for the attributes */
269 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
270
271 static const struct nla_policy
272 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
273 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
274 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
275 .len = U8_MAX },
276 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
277 .len = U8_MAX },
278 };
279
280 static const struct nla_policy
281 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
282 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
283 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
284 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
285 NLA_POLICY_MAX(NLA_U8, 15),
286 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
287 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
288 NLA_POLICY_MAX(NLA_U8, 15),
289 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
290 NLA_POLICY_MAX(NLA_U8, 31),
291 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
292 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
293 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
294 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
295 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
296 };
297
298 static const struct nla_policy
299 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
300 [NL80211_PMSR_TYPE_FTM] =
301 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
302 };
303
304 static const struct nla_policy
305 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
306 [NL80211_PMSR_REQ_ATTR_DATA] =
307 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
308 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
309 };
310
311 static const struct nla_policy
312 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
313 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
314 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
315 [NL80211_PMSR_PEER_ATTR_REQ] =
316 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
317 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
318 };
319
320 static const struct nla_policy
321 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
322 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
323 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
324 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
325 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
326 [NL80211_PMSR_ATTR_PEERS] =
327 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
328 };
329
330 static const struct nla_policy
331 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
332 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
333 NLA_POLICY_RANGE(NLA_U8, 1, 20),
334 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
335 NLA_POLICY_RANGE(NLA_U8, 1, 20),
336 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
337 NLA_POLICY_RANGE(NLA_U8, 1, 20),
338 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
339 NLA_POLICY_EXACT_LEN(8),
340 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
341 NLA_POLICY_EXACT_LEN(8),
342 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
343 };
344
345 static const struct nla_policy
346 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
347 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
348 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
349 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
350 };
351
352 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
353 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
354 .len = NL80211_MAX_SUPP_RATES },
355 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
356 .len = NL80211_MAX_SUPP_HT_RATES },
357 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
358 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
359 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
360 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8,
361 NL80211_RATE_INFO_HE_GI_0_8,
362 NL80211_RATE_INFO_HE_GI_3_2),
363 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
364 NL80211_RATE_INFO_HE_1XLTF,
365 NL80211_RATE_INFO_HE_4XLTF),
366 };
367
368 static const struct nla_policy
369 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
370 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
371 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
372 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
373 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
374 [NL80211_TID_CONFIG_ATTR_NOACK] =
375 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
376 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
377 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
378 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
379 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
380 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
381 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
382 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
383 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
384 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
385 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
386 [NL80211_TID_CONFIG_ATTR_TX_RATE] =
387 NLA_POLICY_NESTED(nl80211_txattr_policy),
388 };
389
390 static const struct nla_policy
391 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
392 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
393 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
394 NLA_POLICY_RANGE(NLA_BINARY,
395 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
396 IEEE80211_MAX_DATA_LEN),
397 };
398
399 static const struct nla_policy
400 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
401 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
402 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
403 .len = IEEE80211_MAX_DATA_LEN }
404 };
405
406 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
407 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
408 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
409 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
410 .len = 20-1 },
411 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
412
413 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
414 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
415 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
416 NL80211_EDMG_CHANNELS_MIN,
417 NL80211_EDMG_CHANNELS_MAX),
418 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
419 NL80211_EDMG_BW_CONFIG_MIN,
420 NL80211_EDMG_BW_CONFIG_MAX),
421
422 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
423 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
424 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
425 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
426
427 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
428 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
429 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
430 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
431 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
432 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
433
434 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
435 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
436 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
437
438 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
439 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
440
441 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
442 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
443 .len = WLAN_MAX_KEY_LEN },
444 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
445 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
446 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
447 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
448 [NL80211_ATTR_KEY_TYPE] =
449 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
450
451 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
452 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
453 [NL80211_ATTR_BEACON_HEAD] =
454 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
455 IEEE80211_MAX_DATA_LEN),
456 [NL80211_ATTR_BEACON_TAIL] =
457 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
458 IEEE80211_MAX_DATA_LEN),
459 [NL80211_ATTR_STA_AID] =
460 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
461 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
462 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
463 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
464 .len = NL80211_MAX_SUPP_RATES },
465 [NL80211_ATTR_STA_PLINK_ACTION] =
466 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
467 [NL80211_ATTR_STA_TX_POWER_SETTING] =
468 NLA_POLICY_RANGE(NLA_U8,
469 NL80211_TX_POWER_AUTOMATIC,
470 NL80211_TX_POWER_FIXED),
471 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
472 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
473 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
474 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
475 .len = IEEE80211_MAX_MESH_ID_LEN },
476 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
477
478 /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
479 [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
480 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
481
482 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
483 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
484 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
485 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
486 .len = NL80211_MAX_SUPP_RATES },
487 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
488
489 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
490 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
491
492 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
493
494 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
495 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
496 validate_ie_attr,
497 IEEE80211_MAX_DATA_LEN),
498 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
499 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
500
501 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
502 .len = IEEE80211_MAX_SSID_LEN },
503 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
504 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
505 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
506 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
507 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
508 NL80211_MFP_NO,
509 NL80211_MFP_OPTIONAL),
510 [NL80211_ATTR_STA_FLAGS2] = {
511 .len = sizeof(struct nl80211_sta_flag_update),
512 },
513 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
514 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
515 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
516 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
517 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
518 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
519 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
520 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
521 [NL80211_ATTR_PID] = { .type = NLA_U32 },
522 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
523 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
524 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
525 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
526 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
527 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
528 .len = IEEE80211_MAX_DATA_LEN },
529 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
530 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
531 NL80211_PS_DISABLED,
532 NL80211_PS_ENABLED),
533 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
534 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
535 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
536 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
537 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
538 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
539 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
540 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
541 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
542 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
543 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
544 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
545 [NL80211_ATTR_STA_PLINK_STATE] =
546 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
547 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
548 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
549 [NL80211_ATTR_MESH_PEER_AID] =
550 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
551 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
552 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
553 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
554 [NL80211_ATTR_HIDDEN_SSID] =
555 NLA_POLICY_RANGE(NLA_U32,
556 NL80211_HIDDEN_SSID_NOT_IN_USE,
557 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
558 [NL80211_ATTR_IE_PROBE_RESP] =
559 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
560 IEEE80211_MAX_DATA_LEN),
561 [NL80211_ATTR_IE_ASSOC_RESP] =
562 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
563 IEEE80211_MAX_DATA_LEN),
564 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
565 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
566 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
567 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
568 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
569 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
570 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
571 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
572 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
573 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
574 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
575 .len = IEEE80211_MAX_DATA_LEN },
576 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
577 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
578 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
579 .len = NL80211_HT_CAPABILITY_LEN
580 },
581 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
582 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
583 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
584 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
585 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
586
587 /* need to include at least Auth Transaction and Status Code */
588 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
589
590 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
591 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
592 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
593 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
594 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
595 NLA_POLICY_RANGE(NLA_U32,
596 NL80211_MESH_POWER_UNKNOWN + 1,
597 NL80211_MESH_POWER_MAX),
598 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
599 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
600 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
601 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
602 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
603 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
604 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
605 .len = NL80211_VHT_CAPABILITY_LEN,
606 },
607 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
608 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
609 .len = IEEE80211_MAX_DATA_LEN },
610 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
611 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
612 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
613 [NL80211_ATTR_PEER_AID] =
614 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
615 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
616 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
617 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
618 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
619 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
620 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
621 /*
622 * The value of the Length field of the Supported Operating
623 * Classes element is between 2 and 253.
624 */
625 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
626 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
627 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
628 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
629 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
630 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
631 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
632 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
633 IEEE80211_QOS_MAP_LEN_MIN,
634 IEEE80211_QOS_MAP_LEN_MAX),
635 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
636 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
637 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
638 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
639 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
640 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
641 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
642 [NL80211_ATTR_USER_PRIO] =
643 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
644 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
645 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
646 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
647 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
648 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
649 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
650 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
651 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
652 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
653 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
654 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
655 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
656 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
657 .len = VHT_MUMIMO_GROUPS_DATA_LEN
658 },
659 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
660 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
661 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
662 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
663 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
664 .len = FILS_MAX_KEK_LEN },
665 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
666 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
667 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
668 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
669 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
670 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
671 },
672 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
673 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
674 .len = FILS_ERP_MAX_USERNAME_LEN },
675 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
676 .len = FILS_ERP_MAX_REALM_LEN },
677 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
678 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
679 .len = FILS_ERP_MAX_RRK_LEN },
680 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
681 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
682 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
683 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
684 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
685
686 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
687 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
688 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
689 [NL80211_ATTR_HE_CAPABILITY] =
690 NLA_POLICY_RANGE(NLA_BINARY,
691 NL80211_HE_MIN_CAPABILITY_LEN,
692 NL80211_HE_MAX_CAPABILITY_LEN),
693 [NL80211_ATTR_FTM_RESPONDER] =
694 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
695 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
696 [NL80211_ATTR_PEER_MEASUREMENTS] =
697 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
698 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
699 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
700 .len = SAE_PASSWORD_MAX_LEN },
701 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
702 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
703 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
704 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
705 [NL80211_ATTR_TID_CONFIG] =
706 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
707 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
708 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
709 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
710 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
711 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
712 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
713 [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
714 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
715 [NL80211_ATTR_FILS_DISCOVERY] =
716 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
717 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
718 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
719 [NL80211_ATTR_S1G_CAPABILITY] =
720 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
721 [NL80211_ATTR_S1G_CAPABILITY_MASK] =
722 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
723 };
724
725 /* policy for the key attributes */
726 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
727 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
728 [NL80211_KEY_IDX] = { .type = NLA_U8 },
729 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
730 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
731 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
732 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
733 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
734 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
735 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
736 };
737
738 /* policy for the key default flags */
739 static const struct nla_policy
740 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
741 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
742 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
743 };
744
745 #ifdef CONFIG_PM
746 /* policy for WoWLAN attributes */
747 static const struct nla_policy
748 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
749 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
750 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
751 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
752 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
753 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
754 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
755 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
756 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
757 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
758 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
759 };
760
761 static const struct nla_policy
762 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
763 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
764 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
765 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
766 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
767 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
768 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
769 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
770 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
771 },
772 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
773 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
774 },
775 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
776 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
777 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
778 };
779 #endif /* CONFIG_PM */
780
781 /* policy for coalesce rule attributes */
782 static const struct nla_policy
783 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
784 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
785 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
786 NLA_POLICY_RANGE(NLA_U32,
787 NL80211_COALESCE_CONDITION_MATCH,
788 NL80211_COALESCE_CONDITION_NO_MATCH),
789 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
790 };
791
792 /* policy for GTK rekey offload attributes */
793 static const struct nla_policy
794 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
795 [NL80211_REKEY_DATA_KEK] = {
796 .type = NLA_BINARY,
797 .len = NL80211_KEK_EXT_LEN
798 },
799 [NL80211_REKEY_DATA_KCK] = {
800 .type = NLA_BINARY,
801 .len = NL80211_KCK_EXT_LEN
802 },
803 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
804 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
805 };
806
807 static const struct nla_policy
808 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
809 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
810 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
811 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
812 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
813 };
814
815 static const struct nla_policy
816 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
817 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
818 .len = IEEE80211_MAX_SSID_LEN },
819 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
820 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
821 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
822 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
823 };
824
825 static const struct nla_policy
826 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
827 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
828 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
829 };
830
831 static const struct nla_policy
832 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
833 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
834 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
835 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
836 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
837 },
838 };
839
840 /* policy for NAN function attributes */
841 static const struct nla_policy
842 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
843 [NL80211_NAN_FUNC_TYPE] =
844 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
845 [NL80211_NAN_FUNC_SERVICE_ID] = {
846 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
847 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
848 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
849 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
850 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
851 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
852 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
853 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
854 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
855 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
856 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
857 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
858 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
859 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
860 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
861 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
862 };
863
864 /* policy for Service Response Filter attributes */
865 static const struct nla_policy
866 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
867 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
868 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
869 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
870 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
871 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
872 };
873
874 /* policy for packet pattern attributes */
875 static const struct nla_policy
876 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
877 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
878 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
879 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
880 };
881
nl80211_prepare_wdev_dump(struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)882 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
883 struct cfg80211_registered_device **rdev,
884 struct wireless_dev **wdev)
885 {
886 int err;
887
888 if (!cb->args[0]) {
889 struct nlattr **attrbuf;
890
891 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
892 GFP_KERNEL);
893 if (!attrbuf)
894 return -ENOMEM;
895
896 err = nlmsg_parse_deprecated(cb->nlh,
897 GENL_HDRLEN + nl80211_fam.hdrsize,
898 attrbuf, nl80211_fam.maxattr,
899 nl80211_policy, NULL);
900 if (err) {
901 kfree(attrbuf);
902 return err;
903 }
904
905 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
906 attrbuf);
907 kfree(attrbuf);
908 if (IS_ERR(*wdev))
909 return PTR_ERR(*wdev);
910 *rdev = wiphy_to_rdev((*wdev)->wiphy);
911 /* 0 is the first index - add 1 to parse only once */
912 cb->args[0] = (*rdev)->wiphy_idx + 1;
913 cb->args[1] = (*wdev)->identifier;
914 } else {
915 /* subtract the 1 again here */
916 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
917 struct wireless_dev *tmp;
918
919 if (!wiphy)
920 return -ENODEV;
921 *rdev = wiphy_to_rdev(wiphy);
922 *wdev = NULL;
923
924 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
925 if (tmp->identifier == cb->args[1]) {
926 *wdev = tmp;
927 break;
928 }
929 }
930
931 if (!*wdev)
932 return -ENODEV;
933 }
934
935 return 0;
936 }
937
938 /* message building helper */
nl80211hdr_put(struct sk_buff * skb,u32 portid,u32 seq,int flags,u8 cmd)939 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
940 int flags, u8 cmd)
941 {
942 /* since there is no private header just add the generic one */
943 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
944 }
945
nl80211_msg_put_wmm_rules(struct sk_buff * msg,const struct ieee80211_reg_rule * rule)946 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
947 const struct ieee80211_reg_rule *rule)
948 {
949 int j;
950 struct nlattr *nl_wmm_rules =
951 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
952
953 if (!nl_wmm_rules)
954 goto nla_put_failure;
955
956 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
957 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
958
959 if (!nl_wmm_rule)
960 goto nla_put_failure;
961
962 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
963 rule->wmm_rule.client[j].cw_min) ||
964 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
965 rule->wmm_rule.client[j].cw_max) ||
966 nla_put_u8(msg, NL80211_WMMR_AIFSN,
967 rule->wmm_rule.client[j].aifsn) ||
968 nla_put_u16(msg, NL80211_WMMR_TXOP,
969 rule->wmm_rule.client[j].cot))
970 goto nla_put_failure;
971
972 nla_nest_end(msg, nl_wmm_rule);
973 }
974 nla_nest_end(msg, nl_wmm_rules);
975
976 return 0;
977
978 nla_put_failure:
979 return -ENOBUFS;
980 }
981
nl80211_msg_put_channel(struct sk_buff * msg,struct wiphy * wiphy,struct ieee80211_channel * chan,bool large)982 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
983 struct ieee80211_channel *chan,
984 bool large)
985 {
986 /* Some channels must be completely excluded from the
987 * list to protect old user-space tools from breaking
988 */
989 if (!large && chan->flags &
990 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
991 return 0;
992 if (!large && chan->freq_offset)
993 return 0;
994
995 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
996 chan->center_freq))
997 goto nla_put_failure;
998
999 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1000 goto nla_put_failure;
1001
1002 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1003 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1004 goto nla_put_failure;
1005 if (chan->flags & IEEE80211_CHAN_NO_IR) {
1006 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1007 goto nla_put_failure;
1008 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1009 goto nla_put_failure;
1010 }
1011 if (chan->flags & IEEE80211_CHAN_RADAR) {
1012 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1013 goto nla_put_failure;
1014 if (large) {
1015 u32 time;
1016
1017 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1018
1019 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1020 chan->dfs_state))
1021 goto nla_put_failure;
1022 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1023 time))
1024 goto nla_put_failure;
1025 if (nla_put_u32(msg,
1026 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1027 chan->dfs_cac_ms))
1028 goto nla_put_failure;
1029 }
1030 }
1031
1032 if (large) {
1033 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1034 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1035 goto nla_put_failure;
1036 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1037 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1038 goto nla_put_failure;
1039 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1040 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1041 goto nla_put_failure;
1042 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1043 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1044 goto nla_put_failure;
1045 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1046 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1047 goto nla_put_failure;
1048 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1049 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1050 goto nla_put_failure;
1051 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1052 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1053 goto nla_put_failure;
1054 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1055 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1056 goto nla_put_failure;
1057 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1058 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1059 goto nla_put_failure;
1060 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1061 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1062 goto nla_put_failure;
1063 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1064 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1065 goto nla_put_failure;
1066 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1067 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1068 goto nla_put_failure;
1069 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1070 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1071 goto nla_put_failure;
1072 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1073 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1074 goto nla_put_failure;
1075 }
1076
1077 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1078 DBM_TO_MBM(chan->max_power)))
1079 goto nla_put_failure;
1080
1081 if (large) {
1082 const struct ieee80211_reg_rule *rule =
1083 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1084
1085 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1086 if (nl80211_msg_put_wmm_rules(msg, rule))
1087 goto nla_put_failure;
1088 }
1089 }
1090
1091 return 0;
1092
1093 nla_put_failure:
1094 return -ENOBUFS;
1095 }
1096
nl80211_put_txq_stats(struct sk_buff * msg,struct cfg80211_txq_stats * txqstats,int attrtype)1097 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1098 struct cfg80211_txq_stats *txqstats,
1099 int attrtype)
1100 {
1101 struct nlattr *txqattr;
1102
1103 #define PUT_TXQVAL_U32(attr, memb) do { \
1104 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1105 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1106 return false; \
1107 } while (0)
1108
1109 txqattr = nla_nest_start_noflag(msg, attrtype);
1110 if (!txqattr)
1111 return false;
1112
1113 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1114 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1115 PUT_TXQVAL_U32(FLOWS, flows);
1116 PUT_TXQVAL_U32(DROPS, drops);
1117 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1118 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1119 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1120 PUT_TXQVAL_U32(COLLISIONS, collisions);
1121 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1122 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1123 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1124 nla_nest_end(msg, txqattr);
1125
1126 #undef PUT_TXQVAL_U32
1127 return true;
1128 }
1129
1130 /* netlink command implementations */
1131
1132 struct key_parse {
1133 struct key_params p;
1134 int idx;
1135 int type;
1136 bool def, defmgmt, defbeacon;
1137 bool def_uni, def_multi;
1138 };
1139
nl80211_parse_key_new(struct genl_info * info,struct nlattr * key,struct key_parse * k)1140 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1141 struct key_parse *k)
1142 {
1143 struct nlattr *tb[NL80211_KEY_MAX + 1];
1144 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1145 nl80211_key_policy,
1146 info->extack);
1147 if (err)
1148 return err;
1149
1150 k->def = !!tb[NL80211_KEY_DEFAULT];
1151 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1152 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1153
1154 if (k->def) {
1155 k->def_uni = true;
1156 k->def_multi = true;
1157 }
1158 if (k->defmgmt || k->defbeacon)
1159 k->def_multi = true;
1160
1161 if (tb[NL80211_KEY_IDX])
1162 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1163
1164 if (tb[NL80211_KEY_DATA]) {
1165 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1166 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1167 }
1168
1169 if (tb[NL80211_KEY_SEQ]) {
1170 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1171 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1172 }
1173
1174 if (tb[NL80211_KEY_CIPHER])
1175 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1176
1177 if (tb[NL80211_KEY_TYPE])
1178 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1179
1180 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1181 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1182
1183 err = nla_parse_nested_deprecated(kdt,
1184 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1185 tb[NL80211_KEY_DEFAULT_TYPES],
1186 nl80211_key_default_policy,
1187 info->extack);
1188 if (err)
1189 return err;
1190
1191 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1192 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1193 }
1194
1195 if (tb[NL80211_KEY_MODE])
1196 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1197
1198 return 0;
1199 }
1200
nl80211_parse_key_old(struct genl_info * info,struct key_parse * k)1201 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1202 {
1203 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1204 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1205 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1206 }
1207
1208 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1209 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1210 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1211 }
1212
1213 if (info->attrs[NL80211_ATTR_KEY_IDX])
1214 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1215
1216 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1217 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1218
1219 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1220 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1221
1222 if (k->def) {
1223 k->def_uni = true;
1224 k->def_multi = true;
1225 }
1226 if (k->defmgmt)
1227 k->def_multi = true;
1228
1229 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1230 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1231
1232 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1233 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1234 int err = nla_parse_nested_deprecated(kdt,
1235 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1236 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1237 nl80211_key_default_policy,
1238 info->extack);
1239 if (err)
1240 return err;
1241
1242 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1243 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1244 }
1245
1246 return 0;
1247 }
1248
nl80211_parse_key(struct genl_info * info,struct key_parse * k)1249 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1250 {
1251 int err;
1252
1253 memset(k, 0, sizeof(*k));
1254 k->idx = -1;
1255 k->type = -1;
1256
1257 if (info->attrs[NL80211_ATTR_KEY])
1258 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1259 else
1260 err = nl80211_parse_key_old(info, k);
1261
1262 if (err)
1263 return err;
1264
1265 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1266 (k->defbeacon ? 1 : 0) > 1) {
1267 GENL_SET_ERR_MSG(info,
1268 "key with multiple default flags is invalid");
1269 return -EINVAL;
1270 }
1271
1272 if (k->defmgmt || k->defbeacon) {
1273 if (k->def_uni || !k->def_multi) {
1274 GENL_SET_ERR_MSG(info,
1275 "defmgmt/defbeacon key must be mcast");
1276 return -EINVAL;
1277 }
1278 }
1279
1280 if (k->idx != -1) {
1281 if (k->defmgmt) {
1282 if (k->idx < 4 || k->idx > 5) {
1283 GENL_SET_ERR_MSG(info,
1284 "defmgmt key idx not 4 or 5");
1285 return -EINVAL;
1286 }
1287 } else if (k->defbeacon) {
1288 if (k->idx < 6 || k->idx > 7) {
1289 GENL_SET_ERR_MSG(info,
1290 "defbeacon key idx not 6 or 7");
1291 return -EINVAL;
1292 }
1293 } else if (k->def) {
1294 if (k->idx < 0 || k->idx > 3) {
1295 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1296 return -EINVAL;
1297 }
1298 } else {
1299 if (k->idx < 0 || k->idx > 7) {
1300 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1301 return -EINVAL;
1302 }
1303 }
1304 }
1305
1306 return 0;
1307 }
1308
1309 static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device * rdev,struct genl_info * info,bool * no_ht)1310 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1311 struct genl_info *info, bool *no_ht)
1312 {
1313 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1314 struct key_parse parse;
1315 struct nlattr *key;
1316 struct cfg80211_cached_keys *result;
1317 int rem, err, def = 0;
1318 bool have_key = false;
1319
1320 nla_for_each_nested(key, keys, rem) {
1321 have_key = true;
1322 break;
1323 }
1324
1325 if (!have_key)
1326 return NULL;
1327
1328 result = kzalloc(sizeof(*result), GFP_KERNEL);
1329 if (!result)
1330 return ERR_PTR(-ENOMEM);
1331
1332 result->def = -1;
1333
1334 nla_for_each_nested(key, keys, rem) {
1335 memset(&parse, 0, sizeof(parse));
1336 parse.idx = -1;
1337
1338 err = nl80211_parse_key_new(info, key, &parse);
1339 if (err)
1340 goto error;
1341 err = -EINVAL;
1342 if (!parse.p.key)
1343 goto error;
1344 if (parse.idx < 0 || parse.idx > 3) {
1345 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1346 goto error;
1347 }
1348 if (parse.def) {
1349 if (def) {
1350 GENL_SET_ERR_MSG(info,
1351 "only one key can be default");
1352 goto error;
1353 }
1354 def = 1;
1355 result->def = parse.idx;
1356 if (!parse.def_uni || !parse.def_multi)
1357 goto error;
1358 } else if (parse.defmgmt)
1359 goto error;
1360 err = cfg80211_validate_key_settings(rdev, &parse.p,
1361 parse.idx, false, NULL);
1362 if (err)
1363 goto error;
1364 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1365 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1366 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1367 err = -EINVAL;
1368 goto error;
1369 }
1370 result->params[parse.idx].cipher = parse.p.cipher;
1371 result->params[parse.idx].key_len = parse.p.key_len;
1372 result->params[parse.idx].key = result->data[parse.idx];
1373 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1374
1375 /* must be WEP key if we got here */
1376 if (no_ht)
1377 *no_ht = true;
1378 }
1379
1380 if (result->def < 0) {
1381 err = -EINVAL;
1382 GENL_SET_ERR_MSG(info, "need a default/TX key");
1383 goto error;
1384 }
1385
1386 return result;
1387 error:
1388 kfree(result);
1389 return ERR_PTR(err);
1390 }
1391
nl80211_key_allowed(struct wireless_dev * wdev)1392 static int nl80211_key_allowed(struct wireless_dev *wdev)
1393 {
1394 ASSERT_WDEV_LOCK(wdev);
1395
1396 switch (wdev->iftype) {
1397 case NL80211_IFTYPE_AP:
1398 case NL80211_IFTYPE_AP_VLAN:
1399 case NL80211_IFTYPE_P2P_GO:
1400 case NL80211_IFTYPE_MESH_POINT:
1401 break;
1402 case NL80211_IFTYPE_ADHOC:
1403 case NL80211_IFTYPE_STATION:
1404 case NL80211_IFTYPE_P2P_CLIENT:
1405 if (!wdev->current_bss)
1406 return -ENOLINK;
1407 break;
1408 case NL80211_IFTYPE_UNSPECIFIED:
1409 case NL80211_IFTYPE_OCB:
1410 case NL80211_IFTYPE_MONITOR:
1411 case NL80211_IFTYPE_NAN:
1412 case NL80211_IFTYPE_P2P_DEVICE:
1413 case NL80211_IFTYPE_WDS:
1414 case NUM_NL80211_IFTYPES:
1415 return -EINVAL;
1416 }
1417
1418 return 0;
1419 }
1420
nl80211_get_valid_chan(struct wiphy * wiphy,u32 freq)1421 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1422 u32 freq)
1423 {
1424 struct ieee80211_channel *chan;
1425
1426 chan = ieee80211_get_channel_khz(wiphy, freq);
1427 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1428 return NULL;
1429 return chan;
1430 }
1431
nl80211_put_iftypes(struct sk_buff * msg,u32 attr,u16 ifmodes)1432 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1433 {
1434 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1435 int i;
1436
1437 if (!nl_modes)
1438 goto nla_put_failure;
1439
1440 i = 0;
1441 while (ifmodes) {
1442 if ((ifmodes & 1) && nla_put_flag(msg, i))
1443 goto nla_put_failure;
1444 ifmodes >>= 1;
1445 i++;
1446 }
1447
1448 nla_nest_end(msg, nl_modes);
1449 return 0;
1450
1451 nla_put_failure:
1452 return -ENOBUFS;
1453 }
1454
nl80211_put_iface_combinations(struct wiphy * wiphy,struct sk_buff * msg,bool large)1455 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1456 struct sk_buff *msg,
1457 bool large)
1458 {
1459 struct nlattr *nl_combis;
1460 int i, j;
1461
1462 nl_combis = nla_nest_start_noflag(msg,
1463 NL80211_ATTR_INTERFACE_COMBINATIONS);
1464 if (!nl_combis)
1465 goto nla_put_failure;
1466
1467 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1468 const struct ieee80211_iface_combination *c;
1469 struct nlattr *nl_combi, *nl_limits;
1470
1471 c = &wiphy->iface_combinations[i];
1472
1473 nl_combi = nla_nest_start_noflag(msg, i + 1);
1474 if (!nl_combi)
1475 goto nla_put_failure;
1476
1477 nl_limits = nla_nest_start_noflag(msg,
1478 NL80211_IFACE_COMB_LIMITS);
1479 if (!nl_limits)
1480 goto nla_put_failure;
1481
1482 for (j = 0; j < c->n_limits; j++) {
1483 struct nlattr *nl_limit;
1484
1485 nl_limit = nla_nest_start_noflag(msg, j + 1);
1486 if (!nl_limit)
1487 goto nla_put_failure;
1488 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1489 c->limits[j].max))
1490 goto nla_put_failure;
1491 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1492 c->limits[j].types))
1493 goto nla_put_failure;
1494 nla_nest_end(msg, nl_limit);
1495 }
1496
1497 nla_nest_end(msg, nl_limits);
1498
1499 if (c->beacon_int_infra_match &&
1500 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1501 goto nla_put_failure;
1502 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1503 c->num_different_channels) ||
1504 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1505 c->max_interfaces))
1506 goto nla_put_failure;
1507 if (large &&
1508 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1509 c->radar_detect_widths) ||
1510 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1511 c->radar_detect_regions)))
1512 goto nla_put_failure;
1513 if (c->beacon_int_min_gcd &&
1514 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1515 c->beacon_int_min_gcd))
1516 goto nla_put_failure;
1517
1518 nla_nest_end(msg, nl_combi);
1519 }
1520
1521 nla_nest_end(msg, nl_combis);
1522
1523 return 0;
1524 nla_put_failure:
1525 return -ENOBUFS;
1526 }
1527
1528 #ifdef CONFIG_PM
nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1529 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1530 struct sk_buff *msg)
1531 {
1532 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1533 struct nlattr *nl_tcp;
1534
1535 if (!tcp)
1536 return 0;
1537
1538 nl_tcp = nla_nest_start_noflag(msg,
1539 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1540 if (!nl_tcp)
1541 return -ENOBUFS;
1542
1543 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1544 tcp->data_payload_max))
1545 return -ENOBUFS;
1546
1547 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1548 tcp->data_payload_max))
1549 return -ENOBUFS;
1550
1551 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1552 return -ENOBUFS;
1553
1554 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1555 sizeof(*tcp->tok), tcp->tok))
1556 return -ENOBUFS;
1557
1558 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1559 tcp->data_interval_max))
1560 return -ENOBUFS;
1561
1562 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1563 tcp->wake_payload_max))
1564 return -ENOBUFS;
1565
1566 nla_nest_end(msg, nl_tcp);
1567 return 0;
1568 }
1569
nl80211_send_wowlan(struct sk_buff * msg,struct cfg80211_registered_device * rdev,bool large)1570 static int nl80211_send_wowlan(struct sk_buff *msg,
1571 struct cfg80211_registered_device *rdev,
1572 bool large)
1573 {
1574 struct nlattr *nl_wowlan;
1575
1576 if (!rdev->wiphy.wowlan)
1577 return 0;
1578
1579 nl_wowlan = nla_nest_start_noflag(msg,
1580 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1581 if (!nl_wowlan)
1582 return -ENOBUFS;
1583
1584 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1585 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1586 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1587 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1588 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1589 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1590 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1591 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1592 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1593 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1594 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1595 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1596 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1597 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1598 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1599 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1600 return -ENOBUFS;
1601
1602 if (rdev->wiphy.wowlan->n_patterns) {
1603 struct nl80211_pattern_support pat = {
1604 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1605 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1606 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1607 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1608 };
1609
1610 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1611 sizeof(pat), &pat))
1612 return -ENOBUFS;
1613 }
1614
1615 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1616 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1617 rdev->wiphy.wowlan->max_nd_match_sets))
1618 return -ENOBUFS;
1619
1620 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1621 return -ENOBUFS;
1622
1623 nla_nest_end(msg, nl_wowlan);
1624
1625 return 0;
1626 }
1627 #endif
1628
nl80211_send_coalesce(struct sk_buff * msg,struct cfg80211_registered_device * rdev)1629 static int nl80211_send_coalesce(struct sk_buff *msg,
1630 struct cfg80211_registered_device *rdev)
1631 {
1632 struct nl80211_coalesce_rule_support rule;
1633
1634 if (!rdev->wiphy.coalesce)
1635 return 0;
1636
1637 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1638 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1639 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1640 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1641 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1642 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1643
1644 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1645 return -ENOBUFS;
1646
1647 return 0;
1648 }
1649
1650 static int
nl80211_send_iftype_data(struct sk_buff * msg,const struct ieee80211_supported_band * sband,const struct ieee80211_sband_iftype_data * iftdata)1651 nl80211_send_iftype_data(struct sk_buff *msg,
1652 const struct ieee80211_supported_band *sband,
1653 const struct ieee80211_sband_iftype_data *iftdata)
1654 {
1655 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1656
1657 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1658 iftdata->types_mask))
1659 return -ENOBUFS;
1660
1661 if (he_cap->has_he) {
1662 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1663 sizeof(he_cap->he_cap_elem.mac_cap_info),
1664 he_cap->he_cap_elem.mac_cap_info) ||
1665 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1666 sizeof(he_cap->he_cap_elem.phy_cap_info),
1667 he_cap->he_cap_elem.phy_cap_info) ||
1668 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1669 sizeof(he_cap->he_mcs_nss_supp),
1670 &he_cap->he_mcs_nss_supp) ||
1671 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1672 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1673 return -ENOBUFS;
1674 }
1675
1676 if (sband->band == NL80211_BAND_6GHZ &&
1677 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1678 sizeof(iftdata->he_6ghz_capa),
1679 &iftdata->he_6ghz_capa))
1680 return -ENOBUFS;
1681
1682 return 0;
1683 }
1684
nl80211_send_band_rateinfo(struct sk_buff * msg,struct ieee80211_supported_band * sband,bool large)1685 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1686 struct ieee80211_supported_band *sband,
1687 bool large)
1688 {
1689 struct nlattr *nl_rates, *nl_rate;
1690 struct ieee80211_rate *rate;
1691 int i;
1692
1693 /* add HT info */
1694 if (sband->ht_cap.ht_supported &&
1695 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1696 sizeof(sband->ht_cap.mcs),
1697 &sband->ht_cap.mcs) ||
1698 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1699 sband->ht_cap.cap) ||
1700 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1701 sband->ht_cap.ampdu_factor) ||
1702 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1703 sband->ht_cap.ampdu_density)))
1704 return -ENOBUFS;
1705
1706 /* add VHT info */
1707 if (sband->vht_cap.vht_supported &&
1708 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1709 sizeof(sband->vht_cap.vht_mcs),
1710 &sband->vht_cap.vht_mcs) ||
1711 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1712 sband->vht_cap.cap)))
1713 return -ENOBUFS;
1714
1715 if (large && sband->n_iftype_data) {
1716 struct nlattr *nl_iftype_data =
1717 nla_nest_start_noflag(msg,
1718 NL80211_BAND_ATTR_IFTYPE_DATA);
1719 int err;
1720
1721 if (!nl_iftype_data)
1722 return -ENOBUFS;
1723
1724 for (i = 0; i < sband->n_iftype_data; i++) {
1725 struct nlattr *iftdata;
1726
1727 iftdata = nla_nest_start_noflag(msg, i + 1);
1728 if (!iftdata)
1729 return -ENOBUFS;
1730
1731 err = nl80211_send_iftype_data(msg, sband,
1732 &sband->iftype_data[i]);
1733 if (err)
1734 return err;
1735
1736 nla_nest_end(msg, iftdata);
1737 }
1738
1739 nla_nest_end(msg, nl_iftype_data);
1740 }
1741
1742 /* add EDMG info */
1743 if (large && sband->edmg_cap.channels &&
1744 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1745 sband->edmg_cap.channels) ||
1746 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1747 sband->edmg_cap.bw_config)))
1748
1749 return -ENOBUFS;
1750
1751 /* add bitrates */
1752 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1753 if (!nl_rates)
1754 return -ENOBUFS;
1755
1756 for (i = 0; i < sband->n_bitrates; i++) {
1757 nl_rate = nla_nest_start_noflag(msg, i);
1758 if (!nl_rate)
1759 return -ENOBUFS;
1760
1761 rate = &sband->bitrates[i];
1762 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1763 rate->bitrate))
1764 return -ENOBUFS;
1765 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1766 nla_put_flag(msg,
1767 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1768 return -ENOBUFS;
1769
1770 nla_nest_end(msg, nl_rate);
1771 }
1772
1773 nla_nest_end(msg, nl_rates);
1774
1775 return 0;
1776 }
1777
1778 static int
nl80211_send_mgmt_stypes(struct sk_buff * msg,const struct ieee80211_txrx_stypes * mgmt_stypes)1779 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1780 const struct ieee80211_txrx_stypes *mgmt_stypes)
1781 {
1782 u16 stypes;
1783 struct nlattr *nl_ftypes, *nl_ifs;
1784 enum nl80211_iftype ift;
1785 int i;
1786
1787 if (!mgmt_stypes)
1788 return 0;
1789
1790 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1791 if (!nl_ifs)
1792 return -ENOBUFS;
1793
1794 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1795 nl_ftypes = nla_nest_start_noflag(msg, ift);
1796 if (!nl_ftypes)
1797 return -ENOBUFS;
1798 i = 0;
1799 stypes = mgmt_stypes[ift].tx;
1800 while (stypes) {
1801 if ((stypes & 1) &&
1802 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1803 (i << 4) | IEEE80211_FTYPE_MGMT))
1804 return -ENOBUFS;
1805 stypes >>= 1;
1806 i++;
1807 }
1808 nla_nest_end(msg, nl_ftypes);
1809 }
1810
1811 nla_nest_end(msg, nl_ifs);
1812
1813 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1814 if (!nl_ifs)
1815 return -ENOBUFS;
1816
1817 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1818 nl_ftypes = nla_nest_start_noflag(msg, ift);
1819 if (!nl_ftypes)
1820 return -ENOBUFS;
1821 i = 0;
1822 stypes = mgmt_stypes[ift].rx;
1823 while (stypes) {
1824 if ((stypes & 1) &&
1825 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1826 (i << 4) | IEEE80211_FTYPE_MGMT))
1827 return -ENOBUFS;
1828 stypes >>= 1;
1829 i++;
1830 }
1831 nla_nest_end(msg, nl_ftypes);
1832 }
1833 nla_nest_end(msg, nl_ifs);
1834
1835 return 0;
1836 }
1837
1838 #define CMD(op, n) \
1839 do { \
1840 if (rdev->ops->op) { \
1841 i++; \
1842 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1843 goto nla_put_failure; \
1844 } \
1845 } while (0)
1846
nl80211_add_commands_unsplit(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1847 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1848 struct sk_buff *msg)
1849 {
1850 int i = 0;
1851
1852 /*
1853 * do *NOT* add anything into this function, new things need to be
1854 * advertised only to new versions of userspace that can deal with
1855 * the split (and they can't possibly care about new features...
1856 */
1857 CMD(add_virtual_intf, NEW_INTERFACE);
1858 CMD(change_virtual_intf, SET_INTERFACE);
1859 CMD(add_key, NEW_KEY);
1860 CMD(start_ap, START_AP);
1861 CMD(add_station, NEW_STATION);
1862 CMD(add_mpath, NEW_MPATH);
1863 CMD(update_mesh_config, SET_MESH_CONFIG);
1864 CMD(change_bss, SET_BSS);
1865 CMD(auth, AUTHENTICATE);
1866 CMD(assoc, ASSOCIATE);
1867 CMD(deauth, DEAUTHENTICATE);
1868 CMD(disassoc, DISASSOCIATE);
1869 CMD(join_ibss, JOIN_IBSS);
1870 CMD(join_mesh, JOIN_MESH);
1871 CMD(set_pmksa, SET_PMKSA);
1872 CMD(del_pmksa, DEL_PMKSA);
1873 CMD(flush_pmksa, FLUSH_PMKSA);
1874 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1875 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1876 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1877 CMD(mgmt_tx, FRAME);
1878 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1879 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1880 i++;
1881 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1882 goto nla_put_failure;
1883 }
1884 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1885 rdev->ops->join_mesh) {
1886 i++;
1887 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1888 goto nla_put_failure;
1889 }
1890 CMD(set_wds_peer, SET_WDS_PEER);
1891 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1892 CMD(tdls_mgmt, TDLS_MGMT);
1893 CMD(tdls_oper, TDLS_OPER);
1894 }
1895 if (rdev->wiphy.max_sched_scan_reqs)
1896 CMD(sched_scan_start, START_SCHED_SCAN);
1897 CMD(probe_client, PROBE_CLIENT);
1898 CMD(set_noack_map, SET_NOACK_MAP);
1899 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1900 i++;
1901 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1902 goto nla_put_failure;
1903 }
1904 CMD(start_p2p_device, START_P2P_DEVICE);
1905 CMD(set_mcast_rate, SET_MCAST_RATE);
1906 #ifdef CONFIG_NL80211_TESTMODE
1907 CMD(testmode_cmd, TESTMODE);
1908 #endif
1909
1910 if (rdev->ops->connect || rdev->ops->auth) {
1911 i++;
1912 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1913 goto nla_put_failure;
1914 }
1915
1916 if (rdev->ops->disconnect || rdev->ops->deauth) {
1917 i++;
1918 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1919 goto nla_put_failure;
1920 }
1921
1922 return i;
1923 nla_put_failure:
1924 return -ENOBUFS;
1925 }
1926
1927 static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities * cap,struct sk_buff * msg)1928 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1929 struct sk_buff *msg)
1930 {
1931 struct nlattr *ftm;
1932
1933 if (!cap->ftm.supported)
1934 return 0;
1935
1936 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1937 if (!ftm)
1938 return -ENOBUFS;
1939
1940 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1941 return -ENOBUFS;
1942 if (cap->ftm.non_asap &&
1943 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1944 return -ENOBUFS;
1945 if (cap->ftm.request_lci &&
1946 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1947 return -ENOBUFS;
1948 if (cap->ftm.request_civicloc &&
1949 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1950 return -ENOBUFS;
1951 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1952 cap->ftm.preambles))
1953 return -ENOBUFS;
1954 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1955 cap->ftm.bandwidths))
1956 return -ENOBUFS;
1957 if (cap->ftm.max_bursts_exponent >= 0 &&
1958 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1959 cap->ftm.max_bursts_exponent))
1960 return -ENOBUFS;
1961 if (cap->ftm.max_ftms_per_burst &&
1962 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1963 cap->ftm.max_ftms_per_burst))
1964 return -ENOBUFS;
1965 if (cap->ftm.trigger_based &&
1966 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1967 return -ENOBUFS;
1968 if (cap->ftm.non_trigger_based &&
1969 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1970 return -ENOBUFS;
1971
1972 nla_nest_end(msg, ftm);
1973 return 0;
1974 }
1975
nl80211_send_pmsr_capa(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1976 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1977 struct sk_buff *msg)
1978 {
1979 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1980 struct nlattr *pmsr, *caps;
1981
1982 if (!cap)
1983 return 0;
1984
1985 /*
1986 * we don't need to clean up anything here since the caller
1987 * will genlmsg_cancel() if we fail
1988 */
1989
1990 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1991 if (!pmsr)
1992 return -ENOBUFS;
1993
1994 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1995 return -ENOBUFS;
1996
1997 if (cap->report_ap_tsf &&
1998 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1999 return -ENOBUFS;
2000
2001 if (cap->randomize_mac_addr &&
2002 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2003 return -ENOBUFS;
2004
2005 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2006 if (!caps)
2007 return -ENOBUFS;
2008
2009 if (nl80211_send_pmsr_ftm_capa(cap, msg))
2010 return -ENOBUFS;
2011
2012 nla_nest_end(msg, caps);
2013 nla_nest_end(msg, pmsr);
2014
2015 return 0;
2016 }
2017
2018 static int
nl80211_put_iftype_akm_suites(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2019 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2020 struct sk_buff *msg)
2021 {
2022 int i;
2023 struct nlattr *nested, *nested_akms;
2024 const struct wiphy_iftype_akm_suites *iftype_akms;
2025
2026 if (!rdev->wiphy.num_iftype_akm_suites ||
2027 !rdev->wiphy.iftype_akm_suites)
2028 return 0;
2029
2030 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2031 if (!nested)
2032 return -ENOBUFS;
2033
2034 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2035 nested_akms = nla_nest_start(msg, i + 1);
2036 if (!nested_akms)
2037 return -ENOBUFS;
2038
2039 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2040
2041 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2042 iftype_akms->iftypes_mask))
2043 return -ENOBUFS;
2044
2045 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2046 sizeof(u32) * iftype_akms->n_akm_suites,
2047 iftype_akms->akm_suites)) {
2048 return -ENOBUFS;
2049 }
2050 nla_nest_end(msg, nested_akms);
2051 }
2052
2053 nla_nest_end(msg, nested);
2054
2055 return 0;
2056 }
2057
2058 static int
nl80211_put_tid_config_support(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2059 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2060 struct sk_buff *msg)
2061 {
2062 struct nlattr *supp;
2063
2064 if (!rdev->wiphy.tid_config_support.vif &&
2065 !rdev->wiphy.tid_config_support.peer)
2066 return 0;
2067
2068 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2069 if (!supp)
2070 return -ENOSPC;
2071
2072 if (rdev->wiphy.tid_config_support.vif &&
2073 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2074 rdev->wiphy.tid_config_support.vif,
2075 NL80211_TID_CONFIG_ATTR_PAD))
2076 goto fail;
2077
2078 if (rdev->wiphy.tid_config_support.peer &&
2079 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2080 rdev->wiphy.tid_config_support.peer,
2081 NL80211_TID_CONFIG_ATTR_PAD))
2082 goto fail;
2083
2084 /* for now we just use the same value ... makes more sense */
2085 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2086 rdev->wiphy.tid_config_support.max_retry))
2087 goto fail;
2088 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2089 rdev->wiphy.tid_config_support.max_retry))
2090 goto fail;
2091
2092 nla_nest_end(msg, supp);
2093
2094 return 0;
2095 fail:
2096 nla_nest_cancel(msg, supp);
2097 return -ENOBUFS;
2098 }
2099
2100 struct nl80211_dump_wiphy_state {
2101 s64 filter_wiphy;
2102 long start;
2103 long split_start, band_start, chan_start, capa_start;
2104 bool split;
2105 };
2106
nl80211_send_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd,struct sk_buff * msg,u32 portid,u32 seq,int flags,struct nl80211_dump_wiphy_state * state)2107 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2108 enum nl80211_commands cmd,
2109 struct sk_buff *msg, u32 portid, u32 seq,
2110 int flags, struct nl80211_dump_wiphy_state *state)
2111 {
2112 void *hdr;
2113 struct nlattr *nl_bands, *nl_band;
2114 struct nlattr *nl_freqs, *nl_freq;
2115 struct nlattr *nl_cmds;
2116 enum nl80211_band band;
2117 struct ieee80211_channel *chan;
2118 int i;
2119 const struct ieee80211_txrx_stypes *mgmt_stypes =
2120 rdev->wiphy.mgmt_stypes;
2121 u32 features;
2122
2123 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2124 if (!hdr)
2125 return -ENOBUFS;
2126
2127 if (WARN_ON(!state))
2128 return -EINVAL;
2129
2130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2131 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2132 wiphy_name(&rdev->wiphy)) ||
2133 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2134 cfg80211_rdev_list_generation))
2135 goto nla_put_failure;
2136
2137 if (cmd != NL80211_CMD_NEW_WIPHY)
2138 goto finish;
2139
2140 switch (state->split_start) {
2141 case 0:
2142 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2143 rdev->wiphy.retry_short) ||
2144 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2145 rdev->wiphy.retry_long) ||
2146 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2147 rdev->wiphy.frag_threshold) ||
2148 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2149 rdev->wiphy.rts_threshold) ||
2150 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2151 rdev->wiphy.coverage_class) ||
2152 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2153 rdev->wiphy.max_scan_ssids) ||
2154 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2155 rdev->wiphy.max_sched_scan_ssids) ||
2156 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2157 rdev->wiphy.max_scan_ie_len) ||
2158 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2159 rdev->wiphy.max_sched_scan_ie_len) ||
2160 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2161 rdev->wiphy.max_match_sets))
2162 goto nla_put_failure;
2163
2164 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2165 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2166 goto nla_put_failure;
2167 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2168 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2169 goto nla_put_failure;
2170 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2171 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2172 goto nla_put_failure;
2173 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2174 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2175 goto nla_put_failure;
2176 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2177 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2178 goto nla_put_failure;
2179 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2180 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2181 goto nla_put_failure;
2182 state->split_start++;
2183 if (state->split)
2184 break;
2185 fallthrough;
2186 case 1:
2187 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2188 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2189 rdev->wiphy.cipher_suites))
2190 goto nla_put_failure;
2191
2192 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2193 rdev->wiphy.max_num_pmkids))
2194 goto nla_put_failure;
2195
2196 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2197 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2198 goto nla_put_failure;
2199
2200 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2201 rdev->wiphy.available_antennas_tx) ||
2202 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2203 rdev->wiphy.available_antennas_rx))
2204 goto nla_put_failure;
2205
2206 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2207 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2208 rdev->wiphy.probe_resp_offload))
2209 goto nla_put_failure;
2210
2211 if ((rdev->wiphy.available_antennas_tx ||
2212 rdev->wiphy.available_antennas_rx) &&
2213 rdev->ops->get_antenna) {
2214 u32 tx_ant = 0, rx_ant = 0;
2215 int res;
2216
2217 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2218 if (!res) {
2219 if (nla_put_u32(msg,
2220 NL80211_ATTR_WIPHY_ANTENNA_TX,
2221 tx_ant) ||
2222 nla_put_u32(msg,
2223 NL80211_ATTR_WIPHY_ANTENNA_RX,
2224 rx_ant))
2225 goto nla_put_failure;
2226 }
2227 }
2228
2229 state->split_start++;
2230 if (state->split)
2231 break;
2232 fallthrough;
2233 case 2:
2234 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2235 rdev->wiphy.interface_modes))
2236 goto nla_put_failure;
2237 state->split_start++;
2238 if (state->split)
2239 break;
2240 fallthrough;
2241 case 3:
2242 nl_bands = nla_nest_start_noflag(msg,
2243 NL80211_ATTR_WIPHY_BANDS);
2244 if (!nl_bands)
2245 goto nla_put_failure;
2246
2247 for (band = state->band_start;
2248 band < NUM_NL80211_BANDS; band++) {
2249 struct ieee80211_supported_band *sband;
2250
2251 /* omit higher bands for ancient software */
2252 if (band > NL80211_BAND_5GHZ && !state->split)
2253 break;
2254
2255 sband = rdev->wiphy.bands[band];
2256
2257 if (!sband)
2258 continue;
2259
2260 nl_band = nla_nest_start_noflag(msg, band);
2261 if (!nl_band)
2262 goto nla_put_failure;
2263
2264 switch (state->chan_start) {
2265 case 0:
2266 if (nl80211_send_band_rateinfo(msg, sband,
2267 state->split))
2268 goto nla_put_failure;
2269 state->chan_start++;
2270 if (state->split)
2271 break;
2272 fallthrough;
2273 default:
2274 /* add frequencies */
2275 nl_freqs = nla_nest_start_noflag(msg,
2276 NL80211_BAND_ATTR_FREQS);
2277 if (!nl_freqs)
2278 goto nla_put_failure;
2279
2280 for (i = state->chan_start - 1;
2281 i < sband->n_channels;
2282 i++) {
2283 nl_freq = nla_nest_start_noflag(msg,
2284 i);
2285 if (!nl_freq)
2286 goto nla_put_failure;
2287
2288 chan = &sband->channels[i];
2289
2290 if (nl80211_msg_put_channel(
2291 msg, &rdev->wiphy, chan,
2292 state->split))
2293 goto nla_put_failure;
2294
2295 nla_nest_end(msg, nl_freq);
2296 if (state->split)
2297 break;
2298 }
2299 if (i < sband->n_channels)
2300 state->chan_start = i + 2;
2301 else
2302 state->chan_start = 0;
2303 nla_nest_end(msg, nl_freqs);
2304 }
2305
2306 nla_nest_end(msg, nl_band);
2307
2308 if (state->split) {
2309 /* start again here */
2310 if (state->chan_start)
2311 band--;
2312 break;
2313 }
2314 }
2315 nla_nest_end(msg, nl_bands);
2316
2317 if (band < NUM_NL80211_BANDS)
2318 state->band_start = band + 1;
2319 else
2320 state->band_start = 0;
2321
2322 /* if bands & channels are done, continue outside */
2323 if (state->band_start == 0 && state->chan_start == 0)
2324 state->split_start++;
2325 if (state->split)
2326 break;
2327 fallthrough;
2328 case 4:
2329 nl_cmds = nla_nest_start_noflag(msg,
2330 NL80211_ATTR_SUPPORTED_COMMANDS);
2331 if (!nl_cmds)
2332 goto nla_put_failure;
2333
2334 i = nl80211_add_commands_unsplit(rdev, msg);
2335 if (i < 0)
2336 goto nla_put_failure;
2337 if (state->split) {
2338 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2339 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2340 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2341 CMD(channel_switch, CHANNEL_SWITCH);
2342 CMD(set_qos_map, SET_QOS_MAP);
2343 if (rdev->wiphy.features &
2344 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2345 CMD(add_tx_ts, ADD_TX_TS);
2346 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2347 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2348 CMD(update_ft_ies, UPDATE_FT_IES);
2349 }
2350 #undef CMD
2351
2352 nla_nest_end(msg, nl_cmds);
2353 state->split_start++;
2354 if (state->split)
2355 break;
2356 fallthrough;
2357 case 5:
2358 if (rdev->ops->remain_on_channel &&
2359 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2360 nla_put_u32(msg,
2361 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2362 rdev->wiphy.max_remain_on_channel_duration))
2363 goto nla_put_failure;
2364
2365 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2366 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2367 goto nla_put_failure;
2368
2369 state->split_start++;
2370 if (state->split)
2371 break;
2372 fallthrough;
2373 case 6:
2374 #ifdef CONFIG_PM
2375 if (nl80211_send_wowlan(msg, rdev, state->split))
2376 goto nla_put_failure;
2377 state->split_start++;
2378 if (state->split)
2379 break;
2380 #else
2381 state->split_start++;
2382 #endif
2383 fallthrough;
2384 case 7:
2385 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2386 rdev->wiphy.software_iftypes))
2387 goto nla_put_failure;
2388
2389 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2390 state->split))
2391 goto nla_put_failure;
2392
2393 state->split_start++;
2394 if (state->split)
2395 break;
2396 fallthrough;
2397 case 8:
2398 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2399 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2400 rdev->wiphy.ap_sme_capa))
2401 goto nla_put_failure;
2402
2403 features = rdev->wiphy.features;
2404 /*
2405 * We can only add the per-channel limit information if the
2406 * dump is split, otherwise it makes it too big. Therefore
2407 * only advertise it in that case.
2408 */
2409 if (state->split)
2410 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2411 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2412 goto nla_put_failure;
2413
2414 if (rdev->wiphy.ht_capa_mod_mask &&
2415 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2416 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2417 rdev->wiphy.ht_capa_mod_mask))
2418 goto nla_put_failure;
2419
2420 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2421 rdev->wiphy.max_acl_mac_addrs &&
2422 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2423 rdev->wiphy.max_acl_mac_addrs))
2424 goto nla_put_failure;
2425
2426 /*
2427 * Any information below this point is only available to
2428 * applications that can deal with it being split. This
2429 * helps ensure that newly added capabilities don't break
2430 * older tools by overrunning their buffers.
2431 *
2432 * We still increment split_start so that in the split
2433 * case we'll continue with more data in the next round,
2434 * but break unconditionally so unsplit data stops here.
2435 */
2436 if (state->split)
2437 state->split_start++;
2438 else
2439 state->split_start = 0;
2440 break;
2441 case 9:
2442 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2443 goto nla_put_failure;
2444
2445 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2446 rdev->wiphy.max_sched_scan_plans) ||
2447 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2448 rdev->wiphy.max_sched_scan_plan_interval) ||
2449 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2450 rdev->wiphy.max_sched_scan_plan_iterations))
2451 goto nla_put_failure;
2452
2453 if (rdev->wiphy.extended_capabilities &&
2454 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2455 rdev->wiphy.extended_capabilities_len,
2456 rdev->wiphy.extended_capabilities) ||
2457 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2458 rdev->wiphy.extended_capabilities_len,
2459 rdev->wiphy.extended_capabilities_mask)))
2460 goto nla_put_failure;
2461
2462 if (rdev->wiphy.vht_capa_mod_mask &&
2463 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2464 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2465 rdev->wiphy.vht_capa_mod_mask))
2466 goto nla_put_failure;
2467
2468 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2469 rdev->wiphy.perm_addr))
2470 goto nla_put_failure;
2471
2472 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2473 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2474 rdev->wiphy.addr_mask))
2475 goto nla_put_failure;
2476
2477 if (rdev->wiphy.n_addresses > 1) {
2478 void *attr;
2479
2480 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2481 if (!attr)
2482 goto nla_put_failure;
2483
2484 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2485 if (nla_put(msg, i + 1, ETH_ALEN,
2486 rdev->wiphy.addresses[i].addr))
2487 goto nla_put_failure;
2488
2489 nla_nest_end(msg, attr);
2490 }
2491
2492 state->split_start++;
2493 break;
2494 case 10:
2495 if (nl80211_send_coalesce(msg, rdev))
2496 goto nla_put_failure;
2497
2498 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2499 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2500 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2501 goto nla_put_failure;
2502
2503 if (rdev->wiphy.max_ap_assoc_sta &&
2504 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2505 rdev->wiphy.max_ap_assoc_sta))
2506 goto nla_put_failure;
2507
2508 state->split_start++;
2509 break;
2510 case 11:
2511 if (rdev->wiphy.n_vendor_commands) {
2512 const struct nl80211_vendor_cmd_info *info;
2513 struct nlattr *nested;
2514
2515 nested = nla_nest_start_noflag(msg,
2516 NL80211_ATTR_VENDOR_DATA);
2517 if (!nested)
2518 goto nla_put_failure;
2519
2520 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2521 info = &rdev->wiphy.vendor_commands[i].info;
2522 if (nla_put(msg, i + 1, sizeof(*info), info))
2523 goto nla_put_failure;
2524 }
2525 nla_nest_end(msg, nested);
2526 }
2527
2528 if (rdev->wiphy.n_vendor_events) {
2529 const struct nl80211_vendor_cmd_info *info;
2530 struct nlattr *nested;
2531
2532 nested = nla_nest_start_noflag(msg,
2533 NL80211_ATTR_VENDOR_EVENTS);
2534 if (!nested)
2535 goto nla_put_failure;
2536
2537 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2538 info = &rdev->wiphy.vendor_events[i];
2539 if (nla_put(msg, i + 1, sizeof(*info), info))
2540 goto nla_put_failure;
2541 }
2542 nla_nest_end(msg, nested);
2543 }
2544 state->split_start++;
2545 break;
2546 case 12:
2547 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2548 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2549 rdev->wiphy.max_num_csa_counters))
2550 goto nla_put_failure;
2551
2552 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2553 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2554 goto nla_put_failure;
2555
2556 if (rdev->wiphy.max_sched_scan_reqs &&
2557 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2558 rdev->wiphy.max_sched_scan_reqs))
2559 goto nla_put_failure;
2560
2561 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2562 sizeof(rdev->wiphy.ext_features),
2563 rdev->wiphy.ext_features))
2564 goto nla_put_failure;
2565
2566 if (rdev->wiphy.bss_select_support) {
2567 struct nlattr *nested;
2568 u32 bss_select_support = rdev->wiphy.bss_select_support;
2569
2570 nested = nla_nest_start_noflag(msg,
2571 NL80211_ATTR_BSS_SELECT);
2572 if (!nested)
2573 goto nla_put_failure;
2574
2575 i = 0;
2576 while (bss_select_support) {
2577 if ((bss_select_support & 1) &&
2578 nla_put_flag(msg, i))
2579 goto nla_put_failure;
2580 i++;
2581 bss_select_support >>= 1;
2582 }
2583 nla_nest_end(msg, nested);
2584 }
2585
2586 state->split_start++;
2587 break;
2588 case 13:
2589 if (rdev->wiphy.num_iftype_ext_capab &&
2590 rdev->wiphy.iftype_ext_capab) {
2591 struct nlattr *nested_ext_capab, *nested;
2592
2593 nested = nla_nest_start_noflag(msg,
2594 NL80211_ATTR_IFTYPE_EXT_CAPA);
2595 if (!nested)
2596 goto nla_put_failure;
2597
2598 for (i = state->capa_start;
2599 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2600 const struct wiphy_iftype_ext_capab *capab;
2601
2602 capab = &rdev->wiphy.iftype_ext_capab[i];
2603
2604 nested_ext_capab = nla_nest_start_noflag(msg,
2605 i);
2606 if (!nested_ext_capab ||
2607 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2608 capab->iftype) ||
2609 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2610 capab->extended_capabilities_len,
2611 capab->extended_capabilities) ||
2612 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2613 capab->extended_capabilities_len,
2614 capab->extended_capabilities_mask))
2615 goto nla_put_failure;
2616
2617 nla_nest_end(msg, nested_ext_capab);
2618 if (state->split)
2619 break;
2620 }
2621 nla_nest_end(msg, nested);
2622 if (i < rdev->wiphy.num_iftype_ext_capab) {
2623 state->capa_start = i + 1;
2624 break;
2625 }
2626 }
2627
2628 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2629 rdev->wiphy.nan_supported_bands))
2630 goto nla_put_failure;
2631
2632 if (wiphy_ext_feature_isset(&rdev->wiphy,
2633 NL80211_EXT_FEATURE_TXQS)) {
2634 struct cfg80211_txq_stats txqstats = {};
2635 int res;
2636
2637 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2638 if (!res &&
2639 !nl80211_put_txq_stats(msg, &txqstats,
2640 NL80211_ATTR_TXQ_STATS))
2641 goto nla_put_failure;
2642
2643 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2644 rdev->wiphy.txq_limit))
2645 goto nla_put_failure;
2646 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2647 rdev->wiphy.txq_memory_limit))
2648 goto nla_put_failure;
2649 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2650 rdev->wiphy.txq_quantum))
2651 goto nla_put_failure;
2652 }
2653
2654 state->split_start++;
2655 break;
2656 case 14:
2657 if (nl80211_send_pmsr_capa(rdev, msg))
2658 goto nla_put_failure;
2659
2660 state->split_start++;
2661 break;
2662 case 15:
2663 if (rdev->wiphy.akm_suites &&
2664 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2665 sizeof(u32) * rdev->wiphy.n_akm_suites,
2666 rdev->wiphy.akm_suites))
2667 goto nla_put_failure;
2668
2669 if (nl80211_put_iftype_akm_suites(rdev, msg))
2670 goto nla_put_failure;
2671
2672 if (nl80211_put_tid_config_support(rdev, msg))
2673 goto nla_put_failure;
2674
2675 /* done */
2676 state->split_start = 0;
2677 break;
2678 }
2679 finish:
2680 genlmsg_end(msg, hdr);
2681 return 0;
2682
2683 nla_put_failure:
2684 genlmsg_cancel(msg, hdr);
2685 return -EMSGSIZE;
2686 }
2687
nl80211_dump_wiphy_parse(struct sk_buff * skb,struct netlink_callback * cb,struct nl80211_dump_wiphy_state * state)2688 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2689 struct netlink_callback *cb,
2690 struct nl80211_dump_wiphy_state *state)
2691 {
2692 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2693 int ret;
2694
2695 if (!tb)
2696 return -ENOMEM;
2697
2698 ret = nlmsg_parse_deprecated(cb->nlh,
2699 GENL_HDRLEN + nl80211_fam.hdrsize,
2700 tb, nl80211_fam.maxattr,
2701 nl80211_policy, NULL);
2702 /* ignore parse errors for backward compatibility */
2703 if (ret) {
2704 ret = 0;
2705 goto out;
2706 }
2707
2708 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2709 if (tb[NL80211_ATTR_WIPHY])
2710 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2711 if (tb[NL80211_ATTR_WDEV])
2712 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2713 if (tb[NL80211_ATTR_IFINDEX]) {
2714 struct net_device *netdev;
2715 struct cfg80211_registered_device *rdev;
2716 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2717
2718 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2719 if (!netdev) {
2720 ret = -ENODEV;
2721 goto out;
2722 }
2723 if (netdev->ieee80211_ptr) {
2724 rdev = wiphy_to_rdev(
2725 netdev->ieee80211_ptr->wiphy);
2726 state->filter_wiphy = rdev->wiphy_idx;
2727 }
2728 }
2729
2730 ret = 0;
2731 out:
2732 kfree(tb);
2733 return ret;
2734 }
2735
nl80211_dump_wiphy(struct sk_buff * skb,struct netlink_callback * cb)2736 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2737 {
2738 int idx = 0, ret;
2739 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2740 struct cfg80211_registered_device *rdev;
2741
2742 rtnl_lock();
2743 if (!state) {
2744 state = kzalloc(sizeof(*state), GFP_KERNEL);
2745 if (!state) {
2746 rtnl_unlock();
2747 return -ENOMEM;
2748 }
2749 state->filter_wiphy = -1;
2750 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2751 if (ret) {
2752 kfree(state);
2753 rtnl_unlock();
2754 return ret;
2755 }
2756 cb->args[0] = (long)state;
2757 }
2758
2759 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2760 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2761 continue;
2762 if (++idx <= state->start)
2763 continue;
2764 if (state->filter_wiphy != -1 &&
2765 state->filter_wiphy != rdev->wiphy_idx)
2766 continue;
2767 /* attempt to fit multiple wiphy data chunks into the skb */
2768 do {
2769 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2770 skb,
2771 NETLINK_CB(cb->skb).portid,
2772 cb->nlh->nlmsg_seq,
2773 NLM_F_MULTI, state);
2774 if (ret < 0) {
2775 /*
2776 * If sending the wiphy data didn't fit (ENOBUFS
2777 * or EMSGSIZE returned), this SKB is still
2778 * empty (so it's not too big because another
2779 * wiphy dataset is already in the skb) and
2780 * we've not tried to adjust the dump allocation
2781 * yet ... then adjust the alloc size to be
2782 * bigger, and return 1 but with the empty skb.
2783 * This results in an empty message being RX'ed
2784 * in userspace, but that is ignored.
2785 *
2786 * We can then retry with the larger buffer.
2787 */
2788 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2789 !skb->len && !state->split &&
2790 cb->min_dump_alloc < 4096) {
2791 cb->min_dump_alloc = 4096;
2792 state->split_start = 0;
2793 rtnl_unlock();
2794 return 1;
2795 }
2796 idx--;
2797 break;
2798 }
2799 } while (state->split_start > 0);
2800 break;
2801 }
2802 rtnl_unlock();
2803
2804 state->start = idx;
2805
2806 return skb->len;
2807 }
2808
nl80211_dump_wiphy_done(struct netlink_callback * cb)2809 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2810 {
2811 kfree((void *)cb->args[0]);
2812 return 0;
2813 }
2814
nl80211_get_wiphy(struct sk_buff * skb,struct genl_info * info)2815 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2816 {
2817 struct sk_buff *msg;
2818 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2819 struct nl80211_dump_wiphy_state state = {};
2820
2821 msg = nlmsg_new(4096, GFP_KERNEL);
2822 if (!msg)
2823 return -ENOMEM;
2824
2825 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2826 info->snd_portid, info->snd_seq, 0,
2827 &state) < 0) {
2828 nlmsg_free(msg);
2829 return -ENOBUFS;
2830 }
2831
2832 return genlmsg_reply(msg, info);
2833 }
2834
2835 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2836 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2837 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2838 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2839 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2840 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2841 };
2842
parse_txq_params(struct nlattr * tb[],struct ieee80211_txq_params * txq_params)2843 static int parse_txq_params(struct nlattr *tb[],
2844 struct ieee80211_txq_params *txq_params)
2845 {
2846 u8 ac;
2847
2848 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2849 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2850 !tb[NL80211_TXQ_ATTR_AIFS])
2851 return -EINVAL;
2852
2853 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2854 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2855 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2856 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2857 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2858
2859 if (ac >= NL80211_NUM_ACS)
2860 return -EINVAL;
2861 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2862 return 0;
2863 }
2864
nl80211_can_set_dev_channel(struct wireless_dev * wdev)2865 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2866 {
2867 /*
2868 * You can only set the channel explicitly for WDS interfaces,
2869 * all others have their channel managed via their respective
2870 * "establish a connection" command (connect, join, ...)
2871 *
2872 * For AP/GO and mesh mode, the channel can be set with the
2873 * channel userspace API, but is only stored and passed to the
2874 * low-level driver when the AP starts or the mesh is joined.
2875 * This is for backward compatibility, userspace can also give
2876 * the channel in the start-ap or join-mesh commands instead.
2877 *
2878 * Monitors are special as they are normally slaved to
2879 * whatever else is going on, so they have their own special
2880 * operation to set the monitor channel if possible.
2881 */
2882 return !wdev ||
2883 wdev->iftype == NL80211_IFTYPE_AP ||
2884 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2885 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2886 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2887 }
2888
nl80211_parse_chandef(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_chan_def * chandef)2889 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2890 struct genl_info *info,
2891 struct cfg80211_chan_def *chandef)
2892 {
2893 struct netlink_ext_ack *extack = info->extack;
2894 struct nlattr **attrs = info->attrs;
2895 u32 control_freq;
2896
2897 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2898 return -EINVAL;
2899
2900 control_freq = MHZ_TO_KHZ(
2901 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2902 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2903 control_freq +=
2904 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2905
2906 memset(chandef, 0, sizeof(*chandef));
2907 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2908 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2909 chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2910 chandef->freq1_offset = control_freq % 1000;
2911 chandef->center_freq2 = 0;
2912
2913 /* Primary channel not allowed */
2914 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2915 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2916 "Channel is disabled");
2917 return -EINVAL;
2918 }
2919
2920 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2921 enum nl80211_channel_type chantype;
2922
2923 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2924
2925 switch (chantype) {
2926 case NL80211_CHAN_NO_HT:
2927 case NL80211_CHAN_HT20:
2928 case NL80211_CHAN_HT40PLUS:
2929 case NL80211_CHAN_HT40MINUS:
2930 cfg80211_chandef_create(chandef, chandef->chan,
2931 chantype);
2932 /* user input for center_freq is incorrect */
2933 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2934 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2935 NL_SET_ERR_MSG_ATTR(extack,
2936 attrs[NL80211_ATTR_CENTER_FREQ1],
2937 "bad center frequency 1");
2938 return -EINVAL;
2939 }
2940 /* center_freq2 must be zero */
2941 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2942 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2943 NL_SET_ERR_MSG_ATTR(extack,
2944 attrs[NL80211_ATTR_CENTER_FREQ2],
2945 "center frequency 2 can't be used");
2946 return -EINVAL;
2947 }
2948 break;
2949 default:
2950 NL_SET_ERR_MSG_ATTR(extack,
2951 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2952 "invalid channel type");
2953 return -EINVAL;
2954 }
2955 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2956 chandef->width =
2957 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2958 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
2959 /* User input error for channel width doesn't match channel */
2960 if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
2961 NL_SET_ERR_MSG_ATTR(extack,
2962 attrs[NL80211_ATTR_CHANNEL_WIDTH],
2963 "bad channel width");
2964 return -EINVAL;
2965 }
2966 }
2967 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2968 chandef->center_freq1 =
2969 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2970 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2971 chandef->freq1_offset = nla_get_u32(
2972 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2973 else
2974 chandef->freq1_offset = 0;
2975 }
2976 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2977 chandef->center_freq2 =
2978 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2979 }
2980
2981 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2982 chandef->edmg.channels =
2983 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2984
2985 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2986 chandef->edmg.bw_config =
2987 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2988 } else {
2989 chandef->edmg.bw_config = 0;
2990 chandef->edmg.channels = 0;
2991 }
2992
2993 if (!cfg80211_chandef_valid(chandef)) {
2994 NL_SET_ERR_MSG(extack, "invalid channel definition");
2995 return -EINVAL;
2996 }
2997
2998 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2999 IEEE80211_CHAN_DISABLED)) {
3000 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3001 return -EINVAL;
3002 }
3003
3004 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3005 chandef->width == NL80211_CHAN_WIDTH_10) &&
3006 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3007 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3008 return -EINVAL;
3009 }
3010
3011 return 0;
3012 }
3013
__nl80211_set_channel(struct cfg80211_registered_device * rdev,struct net_device * dev,struct genl_info * info)3014 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3015 struct net_device *dev,
3016 struct genl_info *info)
3017 {
3018 struct cfg80211_chan_def chandef;
3019 int result;
3020 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3021 struct wireless_dev *wdev = NULL;
3022
3023 if (dev)
3024 wdev = dev->ieee80211_ptr;
3025 if (!nl80211_can_set_dev_channel(wdev))
3026 return -EOPNOTSUPP;
3027 if (wdev)
3028 iftype = wdev->iftype;
3029
3030 result = nl80211_parse_chandef(rdev, info, &chandef);
3031 if (result)
3032 return result;
3033
3034 switch (iftype) {
3035 case NL80211_IFTYPE_AP:
3036 case NL80211_IFTYPE_P2P_GO:
3037 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3038 iftype)) {
3039 result = -EINVAL;
3040 break;
3041 }
3042 if (wdev->beacon_interval) {
3043 if (!dev || !rdev->ops->set_ap_chanwidth ||
3044 !(rdev->wiphy.features &
3045 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3046 result = -EBUSY;
3047 break;
3048 }
3049
3050 /* Only allow dynamic channel width changes */
3051 if (chandef.chan != wdev->preset_chandef.chan) {
3052 result = -EBUSY;
3053 break;
3054 }
3055 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3056 if (result)
3057 break;
3058 }
3059 wdev->preset_chandef = chandef;
3060 result = 0;
3061 break;
3062 case NL80211_IFTYPE_MESH_POINT:
3063 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3064 break;
3065 case NL80211_IFTYPE_MONITOR:
3066 result = cfg80211_set_monitor_channel(rdev, &chandef);
3067 break;
3068 default:
3069 result = -EINVAL;
3070 }
3071
3072 return result;
3073 }
3074
nl80211_set_channel(struct sk_buff * skb,struct genl_info * info)3075 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3076 {
3077 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3078 struct net_device *netdev = info->user_ptr[1];
3079
3080 return __nl80211_set_channel(rdev, netdev, info);
3081 }
3082
nl80211_set_wds_peer(struct sk_buff * skb,struct genl_info * info)3083 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
3084 {
3085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3086 struct net_device *dev = info->user_ptr[1];
3087 struct wireless_dev *wdev = dev->ieee80211_ptr;
3088 const u8 *bssid;
3089
3090 if (!info->attrs[NL80211_ATTR_MAC])
3091 return -EINVAL;
3092
3093 if (netif_running(dev))
3094 return -EBUSY;
3095
3096 if (!rdev->ops->set_wds_peer)
3097 return -EOPNOTSUPP;
3098
3099 if (wdev->iftype != NL80211_IFTYPE_WDS)
3100 return -EOPNOTSUPP;
3101
3102 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3103 return rdev_set_wds_peer(rdev, dev, bssid);
3104 }
3105
nl80211_set_wiphy(struct sk_buff * skb,struct genl_info * info)3106 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3107 {
3108 struct cfg80211_registered_device *rdev;
3109 struct net_device *netdev = NULL;
3110 struct wireless_dev *wdev;
3111 int result = 0, rem_txq_params = 0;
3112 struct nlattr *nl_txq_params;
3113 u32 changed;
3114 u8 retry_short = 0, retry_long = 0;
3115 u32 frag_threshold = 0, rts_threshold = 0;
3116 u8 coverage_class = 0;
3117 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3118
3119 ASSERT_RTNL();
3120
3121 /*
3122 * Try to find the wiphy and netdev. Normally this
3123 * function shouldn't need the netdev, but this is
3124 * done for backward compatibility -- previously
3125 * setting the channel was done per wiphy, but now
3126 * it is per netdev. Previous userland like hostapd
3127 * also passed a netdev to set_wiphy, so that it is
3128 * possible to let that go to the right netdev!
3129 */
3130
3131 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3132 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3133
3134 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3135 if (netdev && netdev->ieee80211_ptr)
3136 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3137 else
3138 netdev = NULL;
3139 }
3140
3141 if (!netdev) {
3142 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3143 info->attrs);
3144 if (IS_ERR(rdev))
3145 return PTR_ERR(rdev);
3146 wdev = NULL;
3147 netdev = NULL;
3148 result = 0;
3149 } else
3150 wdev = netdev->ieee80211_ptr;
3151
3152 /*
3153 * end workaround code, by now the rdev is available
3154 * and locked, and wdev may or may not be NULL.
3155 */
3156
3157 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3158 result = cfg80211_dev_rename(
3159 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3160
3161 if (result)
3162 return result;
3163
3164 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3165 struct ieee80211_txq_params txq_params;
3166 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3167
3168 if (!rdev->ops->set_txq_params)
3169 return -EOPNOTSUPP;
3170
3171 if (!netdev)
3172 return -EINVAL;
3173
3174 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3175 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3176 return -EINVAL;
3177
3178 if (!netif_running(netdev))
3179 return -ENETDOWN;
3180
3181 nla_for_each_nested(nl_txq_params,
3182 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3183 rem_txq_params) {
3184 result = nla_parse_nested_deprecated(tb,
3185 NL80211_TXQ_ATTR_MAX,
3186 nl_txq_params,
3187 txq_params_policy,
3188 info->extack);
3189 if (result)
3190 return result;
3191 result = parse_txq_params(tb, &txq_params);
3192 if (result)
3193 return result;
3194
3195 result = rdev_set_txq_params(rdev, netdev,
3196 &txq_params);
3197 if (result)
3198 return result;
3199 }
3200 }
3201
3202 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3203 result = __nl80211_set_channel(
3204 rdev,
3205 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3206 info);
3207 if (result)
3208 return result;
3209 }
3210
3211 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3212 struct wireless_dev *txp_wdev = wdev;
3213 enum nl80211_tx_power_setting type;
3214 int idx, mbm = 0;
3215
3216 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3217 txp_wdev = NULL;
3218
3219 if (!rdev->ops->set_tx_power)
3220 return -EOPNOTSUPP;
3221
3222 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3223 type = nla_get_u32(info->attrs[idx]);
3224
3225 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3226 (type != NL80211_TX_POWER_AUTOMATIC))
3227 return -EINVAL;
3228
3229 if (type != NL80211_TX_POWER_AUTOMATIC) {
3230 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3231 mbm = nla_get_u32(info->attrs[idx]);
3232 }
3233
3234 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3235 if (result)
3236 return result;
3237 }
3238
3239 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3240 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3241 u32 tx_ant, rx_ant;
3242
3243 if ((!rdev->wiphy.available_antennas_tx &&
3244 !rdev->wiphy.available_antennas_rx) ||
3245 !rdev->ops->set_antenna)
3246 return -EOPNOTSUPP;
3247
3248 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3249 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3250
3251 /* reject antenna configurations which don't match the
3252 * available antenna masks, except for the "all" mask */
3253 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3254 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3255 return -EINVAL;
3256
3257 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3258 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3259
3260 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3261 if (result)
3262 return result;
3263 }
3264
3265 changed = 0;
3266
3267 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3268 retry_short = nla_get_u8(
3269 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3270
3271 changed |= WIPHY_PARAM_RETRY_SHORT;
3272 }
3273
3274 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3275 retry_long = nla_get_u8(
3276 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3277
3278 changed |= WIPHY_PARAM_RETRY_LONG;
3279 }
3280
3281 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3282 frag_threshold = nla_get_u32(
3283 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3284 if (frag_threshold < 256)
3285 return -EINVAL;
3286
3287 if (frag_threshold != (u32) -1) {
3288 /*
3289 * Fragments (apart from the last one) are required to
3290 * have even length. Make the fragmentation code
3291 * simpler by stripping LSB should someone try to use
3292 * odd threshold value.
3293 */
3294 frag_threshold &= ~0x1;
3295 }
3296 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3297 }
3298
3299 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3300 rts_threshold = nla_get_u32(
3301 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3302 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3303 }
3304
3305 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3306 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3307 return -EINVAL;
3308
3309 coverage_class = nla_get_u8(
3310 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3311 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3312 }
3313
3314 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3315 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3316 return -EOPNOTSUPP;
3317
3318 changed |= WIPHY_PARAM_DYN_ACK;
3319 }
3320
3321 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3322 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3323 NL80211_EXT_FEATURE_TXQS))
3324 return -EOPNOTSUPP;
3325 txq_limit = nla_get_u32(
3326 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3327 changed |= WIPHY_PARAM_TXQ_LIMIT;
3328 }
3329
3330 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3331 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3332 NL80211_EXT_FEATURE_TXQS))
3333 return -EOPNOTSUPP;
3334 txq_memory_limit = nla_get_u32(
3335 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3336 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3337 }
3338
3339 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3340 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3341 NL80211_EXT_FEATURE_TXQS))
3342 return -EOPNOTSUPP;
3343 txq_quantum = nla_get_u32(
3344 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3345 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3346 }
3347
3348 if (changed) {
3349 u8 old_retry_short, old_retry_long;
3350 u32 old_frag_threshold, old_rts_threshold;
3351 u8 old_coverage_class;
3352 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3353
3354 if (!rdev->ops->set_wiphy_params)
3355 return -EOPNOTSUPP;
3356
3357 old_retry_short = rdev->wiphy.retry_short;
3358 old_retry_long = rdev->wiphy.retry_long;
3359 old_frag_threshold = rdev->wiphy.frag_threshold;
3360 old_rts_threshold = rdev->wiphy.rts_threshold;
3361 old_coverage_class = rdev->wiphy.coverage_class;
3362 old_txq_limit = rdev->wiphy.txq_limit;
3363 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3364 old_txq_quantum = rdev->wiphy.txq_quantum;
3365
3366 if (changed & WIPHY_PARAM_RETRY_SHORT)
3367 rdev->wiphy.retry_short = retry_short;
3368 if (changed & WIPHY_PARAM_RETRY_LONG)
3369 rdev->wiphy.retry_long = retry_long;
3370 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3371 rdev->wiphy.frag_threshold = frag_threshold;
3372 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3373 rdev->wiphy.rts_threshold = rts_threshold;
3374 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3375 rdev->wiphy.coverage_class = coverage_class;
3376 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3377 rdev->wiphy.txq_limit = txq_limit;
3378 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3379 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3380 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3381 rdev->wiphy.txq_quantum = txq_quantum;
3382
3383 result = rdev_set_wiphy_params(rdev, changed);
3384 if (result) {
3385 rdev->wiphy.retry_short = old_retry_short;
3386 rdev->wiphy.retry_long = old_retry_long;
3387 rdev->wiphy.frag_threshold = old_frag_threshold;
3388 rdev->wiphy.rts_threshold = old_rts_threshold;
3389 rdev->wiphy.coverage_class = old_coverage_class;
3390 rdev->wiphy.txq_limit = old_txq_limit;
3391 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3392 rdev->wiphy.txq_quantum = old_txq_quantum;
3393 return result;
3394 }
3395 }
3396 return 0;
3397 }
3398
nl80211_send_chandef(struct sk_buff * msg,const struct cfg80211_chan_def * chandef)3399 static int nl80211_send_chandef(struct sk_buff *msg,
3400 const struct cfg80211_chan_def *chandef)
3401 {
3402 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3403 return -EINVAL;
3404
3405 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3406 chandef->chan->center_freq))
3407 return -ENOBUFS;
3408 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3409 chandef->chan->freq_offset))
3410 return -ENOBUFS;
3411 switch (chandef->width) {
3412 case NL80211_CHAN_WIDTH_20_NOHT:
3413 case NL80211_CHAN_WIDTH_20:
3414 case NL80211_CHAN_WIDTH_40:
3415 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3416 cfg80211_get_chandef_type(chandef)))
3417 return -ENOBUFS;
3418 break;
3419 default:
3420 break;
3421 }
3422 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3423 return -ENOBUFS;
3424 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3425 return -ENOBUFS;
3426 if (chandef->center_freq2 &&
3427 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3428 return -ENOBUFS;
3429 return 0;
3430 }
3431
nl80211_send_iface(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)3432 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3433 struct cfg80211_registered_device *rdev,
3434 struct wireless_dev *wdev,
3435 enum nl80211_commands cmd)
3436 {
3437 struct net_device *dev = wdev->netdev;
3438 void *hdr;
3439
3440 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3441 cmd != NL80211_CMD_DEL_INTERFACE &&
3442 cmd != NL80211_CMD_SET_INTERFACE);
3443
3444 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3445 if (!hdr)
3446 return -1;
3447
3448 if (dev &&
3449 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3450 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3451 goto nla_put_failure;
3452
3453 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3454 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3455 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3456 NL80211_ATTR_PAD) ||
3457 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3458 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3459 rdev->devlist_generation ^
3460 (cfg80211_rdev_list_generation << 2)) ||
3461 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3462 goto nla_put_failure;
3463
3464 if (rdev->ops->get_channel) {
3465 int ret;
3466 struct cfg80211_chan_def chandef = {};
3467
3468 ret = rdev_get_channel(rdev, wdev, &chandef);
3469 if (ret == 0) {
3470 if (nl80211_send_chandef(msg, &chandef))
3471 goto nla_put_failure;
3472 }
3473 }
3474
3475 if (rdev->ops->get_tx_power) {
3476 int dbm, ret;
3477
3478 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3479 if (ret == 0 &&
3480 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3481 DBM_TO_MBM(dbm)))
3482 goto nla_put_failure;
3483 }
3484
3485 wdev_lock(wdev);
3486 switch (wdev->iftype) {
3487 case NL80211_IFTYPE_AP:
3488 case NL80211_IFTYPE_P2P_GO:
3489 if (wdev->ssid_len &&
3490 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3491 goto nla_put_failure_locked;
3492 break;
3493 case NL80211_IFTYPE_STATION:
3494 case NL80211_IFTYPE_P2P_CLIENT:
3495 case NL80211_IFTYPE_ADHOC: {
3496 const u8 *ssid_ie;
3497 if (!wdev->current_bss)
3498 break;
3499 rcu_read_lock();
3500 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3501 WLAN_EID_SSID);
3502 if (ssid_ie &&
3503 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3504 goto nla_put_failure_rcu_locked;
3505 rcu_read_unlock();
3506 break;
3507 }
3508 default:
3509 /* nothing */
3510 break;
3511 }
3512 wdev_unlock(wdev);
3513
3514 if (rdev->ops->get_txq_stats) {
3515 struct cfg80211_txq_stats txqstats = {};
3516 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3517
3518 if (ret == 0 &&
3519 !nl80211_put_txq_stats(msg, &txqstats,
3520 NL80211_ATTR_TXQ_STATS))
3521 goto nla_put_failure;
3522 }
3523
3524 genlmsg_end(msg, hdr);
3525 return 0;
3526
3527 nla_put_failure_rcu_locked:
3528 rcu_read_unlock();
3529 nla_put_failure_locked:
3530 wdev_unlock(wdev);
3531 nla_put_failure:
3532 genlmsg_cancel(msg, hdr);
3533 return -EMSGSIZE;
3534 }
3535
nl80211_dump_interface(struct sk_buff * skb,struct netlink_callback * cb)3536 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3537 {
3538 int wp_idx = 0;
3539 int if_idx = 0;
3540 int wp_start = cb->args[0];
3541 int if_start = cb->args[1];
3542 int filter_wiphy = -1;
3543 struct cfg80211_registered_device *rdev;
3544 struct wireless_dev *wdev;
3545 int ret;
3546
3547 rtnl_lock();
3548 if (!cb->args[2]) {
3549 struct nl80211_dump_wiphy_state state = {
3550 .filter_wiphy = -1,
3551 };
3552
3553 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3554 if (ret)
3555 goto out_unlock;
3556
3557 filter_wiphy = state.filter_wiphy;
3558
3559 /*
3560 * if filtering, set cb->args[2] to +1 since 0 is the default
3561 * value needed to determine that parsing is necessary.
3562 */
3563 if (filter_wiphy >= 0)
3564 cb->args[2] = filter_wiphy + 1;
3565 else
3566 cb->args[2] = -1;
3567 } else if (cb->args[2] > 0) {
3568 filter_wiphy = cb->args[2] - 1;
3569 }
3570
3571 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3572 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3573 continue;
3574 if (wp_idx < wp_start) {
3575 wp_idx++;
3576 continue;
3577 }
3578
3579 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3580 continue;
3581
3582 if_idx = 0;
3583
3584 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3585 if (if_idx < if_start) {
3586 if_idx++;
3587 continue;
3588 }
3589 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3590 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3591 rdev, wdev,
3592 NL80211_CMD_NEW_INTERFACE) < 0) {
3593 goto out;
3594 }
3595 if_idx++;
3596 }
3597
3598 wp_idx++;
3599 }
3600 out:
3601 cb->args[0] = wp_idx;
3602 cb->args[1] = if_idx;
3603
3604 ret = skb->len;
3605 out_unlock:
3606 rtnl_unlock();
3607
3608 return ret;
3609 }
3610
nl80211_get_interface(struct sk_buff * skb,struct genl_info * info)3611 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3612 {
3613 struct sk_buff *msg;
3614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3615 struct wireless_dev *wdev = info->user_ptr[1];
3616
3617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3618 if (!msg)
3619 return -ENOMEM;
3620
3621 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3622 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3623 nlmsg_free(msg);
3624 return -ENOBUFS;
3625 }
3626
3627 return genlmsg_reply(msg, info);
3628 }
3629
3630 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3631 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3632 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3633 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3634 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3635 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3636 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3637 };
3638
parse_monitor_flags(struct nlattr * nla,u32 * mntrflags)3639 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3640 {
3641 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3642 int flag;
3643
3644 *mntrflags = 0;
3645
3646 if (!nla)
3647 return -EINVAL;
3648
3649 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3650 return -EINVAL;
3651
3652 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3653 if (flags[flag])
3654 *mntrflags |= (1<<flag);
3655
3656 *mntrflags |= MONITOR_FLAG_CHANGED;
3657
3658 return 0;
3659 }
3660
nl80211_parse_mon_options(struct cfg80211_registered_device * rdev,enum nl80211_iftype type,struct genl_info * info,struct vif_params * params)3661 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3662 enum nl80211_iftype type,
3663 struct genl_info *info,
3664 struct vif_params *params)
3665 {
3666 bool change = false;
3667 int err;
3668
3669 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3670 if (type != NL80211_IFTYPE_MONITOR)
3671 return -EINVAL;
3672
3673 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3674 ¶ms->flags);
3675 if (err)
3676 return err;
3677
3678 change = true;
3679 }
3680
3681 if (params->flags & MONITOR_FLAG_ACTIVE &&
3682 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3683 return -EOPNOTSUPP;
3684
3685 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3686 const u8 *mumimo_groups;
3687 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3688
3689 if (type != NL80211_IFTYPE_MONITOR)
3690 return -EINVAL;
3691
3692 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3693 return -EOPNOTSUPP;
3694
3695 mumimo_groups =
3696 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3697
3698 /* bits 0 and 63 are reserved and must be zero */
3699 if ((mumimo_groups[0] & BIT(0)) ||
3700 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3701 return -EINVAL;
3702
3703 params->vht_mumimo_groups = mumimo_groups;
3704 change = true;
3705 }
3706
3707 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3708 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3709
3710 if (type != NL80211_IFTYPE_MONITOR)
3711 return -EINVAL;
3712
3713 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3714 return -EOPNOTSUPP;
3715
3716 params->vht_mumimo_follow_addr =
3717 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3718 change = true;
3719 }
3720
3721 return change ? 1 : 0;
3722 }
3723
nl80211_valid_4addr(struct cfg80211_registered_device * rdev,struct net_device * netdev,u8 use_4addr,enum nl80211_iftype iftype)3724 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3725 struct net_device *netdev, u8 use_4addr,
3726 enum nl80211_iftype iftype)
3727 {
3728 if (!use_4addr) {
3729 if (netdev && netif_is_bridge_port(netdev))
3730 return -EBUSY;
3731 return 0;
3732 }
3733
3734 switch (iftype) {
3735 case NL80211_IFTYPE_AP_VLAN:
3736 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3737 return 0;
3738 break;
3739 case NL80211_IFTYPE_STATION:
3740 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3741 return 0;
3742 break;
3743 default:
3744 break;
3745 }
3746
3747 return -EOPNOTSUPP;
3748 }
3749
nl80211_set_interface(struct sk_buff * skb,struct genl_info * info)3750 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3751 {
3752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3753 struct vif_params params;
3754 int err;
3755 enum nl80211_iftype otype, ntype;
3756 struct net_device *dev = info->user_ptr[1];
3757 bool change = false;
3758
3759 memset(¶ms, 0, sizeof(params));
3760
3761 otype = ntype = dev->ieee80211_ptr->iftype;
3762
3763 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3764 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3765 if (otype != ntype)
3766 change = true;
3767 }
3768
3769 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3770 struct wireless_dev *wdev = dev->ieee80211_ptr;
3771
3772 if (ntype != NL80211_IFTYPE_MESH_POINT)
3773 return -EINVAL;
3774 if (otype != NL80211_IFTYPE_MESH_POINT)
3775 return -EINVAL;
3776 if (netif_running(dev))
3777 return -EBUSY;
3778
3779 wdev_lock(wdev);
3780 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3781 IEEE80211_MAX_MESH_ID_LEN);
3782 wdev->mesh_id_up_len =
3783 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3784 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3785 wdev->mesh_id_up_len);
3786 wdev_unlock(wdev);
3787 }
3788
3789 if (info->attrs[NL80211_ATTR_4ADDR]) {
3790 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3791 change = true;
3792 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3793 if (err)
3794 return err;
3795 } else {
3796 params.use_4addr = -1;
3797 }
3798
3799 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms);
3800 if (err < 0)
3801 return err;
3802 if (err > 0)
3803 change = true;
3804
3805 if (change)
3806 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms);
3807 else
3808 err = 0;
3809
3810 if (!err && params.use_4addr != -1)
3811 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3812
3813 if (change && !err) {
3814 struct wireless_dev *wdev = dev->ieee80211_ptr;
3815
3816 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3817 }
3818
3819 return err;
3820 }
3821
nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)3822 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3823 {
3824 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3825 struct vif_params params;
3826 struct wireless_dev *wdev;
3827 struct sk_buff *msg;
3828 int err;
3829 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3830
3831 /* to avoid failing a new interface creation due to pending removal */
3832 cfg80211_destroy_ifaces(rdev);
3833
3834 memset(¶ms, 0, sizeof(params));
3835
3836 if (!info->attrs[NL80211_ATTR_IFNAME])
3837 return -EINVAL;
3838
3839 if (info->attrs[NL80211_ATTR_IFTYPE])
3840 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3841
3842 if (!rdev->ops->add_virtual_intf)
3843 return -EOPNOTSUPP;
3844
3845 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3846 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3847 info->attrs[NL80211_ATTR_MAC]) {
3848 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3849 ETH_ALEN);
3850 if (!is_valid_ether_addr(params.macaddr))
3851 return -EADDRNOTAVAIL;
3852 }
3853
3854 if (info->attrs[NL80211_ATTR_4ADDR]) {
3855 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3856 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3857 if (err)
3858 return err;
3859 }
3860
3861 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3862 return -EOPNOTSUPP;
3863
3864 err = nl80211_parse_mon_options(rdev, type, info, ¶ms);
3865 if (err < 0)
3866 return err;
3867
3868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3869 if (!msg)
3870 return -ENOMEM;
3871
3872 wdev = rdev_add_virtual_intf(rdev,
3873 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3874 NET_NAME_USER, type, ¶ms);
3875 if (WARN_ON(!wdev)) {
3876 nlmsg_free(msg);
3877 return -EPROTO;
3878 } else if (IS_ERR(wdev)) {
3879 nlmsg_free(msg);
3880 return PTR_ERR(wdev);
3881 }
3882
3883 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3884 wdev->owner_nlportid = info->snd_portid;
3885
3886 switch (type) {
3887 case NL80211_IFTYPE_MESH_POINT:
3888 if (!info->attrs[NL80211_ATTR_MESH_ID])
3889 break;
3890 wdev_lock(wdev);
3891 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3892 IEEE80211_MAX_MESH_ID_LEN);
3893 wdev->mesh_id_up_len =
3894 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3895 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3896 wdev->mesh_id_up_len);
3897 wdev_unlock(wdev);
3898 break;
3899 case NL80211_IFTYPE_NAN:
3900 case NL80211_IFTYPE_P2P_DEVICE:
3901 /*
3902 * P2P Device and NAN do not have a netdev, so don't go
3903 * through the netdev notifier and must be added here
3904 */
3905 cfg80211_init_wdev(wdev);
3906 cfg80211_register_wdev(rdev, wdev);
3907 break;
3908 default:
3909 break;
3910 }
3911
3912 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3913 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3914 nlmsg_free(msg);
3915 return -ENOBUFS;
3916 }
3917
3918 return genlmsg_reply(msg, info);
3919 }
3920
nl80211_del_interface(struct sk_buff * skb,struct genl_info * info)3921 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3922 {
3923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3924 struct wireless_dev *wdev = info->user_ptr[1];
3925
3926 if (!rdev->ops->del_virtual_intf)
3927 return -EOPNOTSUPP;
3928
3929 /*
3930 * If we remove a wireless device without a netdev then clear
3931 * user_ptr[1] so that nl80211_post_doit won't dereference it
3932 * to check if it needs to do dev_put(). Otherwise it crashes
3933 * since the wdev has been freed, unlike with a netdev where
3934 * we need the dev_put() for the netdev to really be freed.
3935 */
3936 if (!wdev->netdev)
3937 info->user_ptr[1] = NULL;
3938
3939 return rdev_del_virtual_intf(rdev, wdev);
3940 }
3941
nl80211_set_noack_map(struct sk_buff * skb,struct genl_info * info)3942 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3943 {
3944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3945 struct net_device *dev = info->user_ptr[1];
3946 u16 noack_map;
3947
3948 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3949 return -EINVAL;
3950
3951 if (!rdev->ops->set_noack_map)
3952 return -EOPNOTSUPP;
3953
3954 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3955
3956 return rdev_set_noack_map(rdev, dev, noack_map);
3957 }
3958
3959 struct get_key_cookie {
3960 struct sk_buff *msg;
3961 int error;
3962 int idx;
3963 };
3964
get_key_callback(void * c,struct key_params * params)3965 static void get_key_callback(void *c, struct key_params *params)
3966 {
3967 struct nlattr *key;
3968 struct get_key_cookie *cookie = c;
3969
3970 if ((params->key &&
3971 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3972 params->key_len, params->key)) ||
3973 (params->seq &&
3974 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3975 params->seq_len, params->seq)) ||
3976 (params->cipher &&
3977 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3978 params->cipher)))
3979 goto nla_put_failure;
3980
3981 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3982 if (!key)
3983 goto nla_put_failure;
3984
3985 if ((params->key &&
3986 nla_put(cookie->msg, NL80211_KEY_DATA,
3987 params->key_len, params->key)) ||
3988 (params->seq &&
3989 nla_put(cookie->msg, NL80211_KEY_SEQ,
3990 params->seq_len, params->seq)) ||
3991 (params->cipher &&
3992 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3993 params->cipher)))
3994 goto nla_put_failure;
3995
3996 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3997 goto nla_put_failure;
3998
3999 nla_nest_end(cookie->msg, key);
4000
4001 return;
4002 nla_put_failure:
4003 cookie->error = 1;
4004 }
4005
nl80211_get_key(struct sk_buff * skb,struct genl_info * info)4006 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4007 {
4008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4009 int err;
4010 struct net_device *dev = info->user_ptr[1];
4011 u8 key_idx = 0;
4012 const u8 *mac_addr = NULL;
4013 bool pairwise;
4014 struct get_key_cookie cookie = {
4015 .error = 0,
4016 };
4017 void *hdr;
4018 struct sk_buff *msg;
4019 bool bigtk_support = false;
4020
4021 if (wiphy_ext_feature_isset(&rdev->wiphy,
4022 NL80211_EXT_FEATURE_BEACON_PROTECTION))
4023 bigtk_support = true;
4024
4025 if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4026 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4027 wiphy_ext_feature_isset(&rdev->wiphy,
4028 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4029 bigtk_support = true;
4030
4031 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4032 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4033
4034 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4035 GENL_SET_ERR_MSG(info, "BIGTK not supported");
4036 return -EINVAL;
4037 }
4038 }
4039
4040 if (info->attrs[NL80211_ATTR_MAC])
4041 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4042
4043 pairwise = !!mac_addr;
4044 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4045 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4046
4047 if (kt != NL80211_KEYTYPE_GROUP &&
4048 kt != NL80211_KEYTYPE_PAIRWISE)
4049 return -EINVAL;
4050 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4051 }
4052
4053 if (!rdev->ops->get_key)
4054 return -EOPNOTSUPP;
4055
4056 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4057 return -ENOENT;
4058
4059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4060 if (!msg)
4061 return -ENOMEM;
4062
4063 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4064 NL80211_CMD_NEW_KEY);
4065 if (!hdr)
4066 goto nla_put_failure;
4067
4068 cookie.msg = msg;
4069 cookie.idx = key_idx;
4070
4071 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4072 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4073 goto nla_put_failure;
4074 if (mac_addr &&
4075 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4076 goto nla_put_failure;
4077
4078 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4079 get_key_callback);
4080
4081 if (err)
4082 goto free_msg;
4083
4084 if (cookie.error)
4085 goto nla_put_failure;
4086
4087 genlmsg_end(msg, hdr);
4088 return genlmsg_reply(msg, info);
4089
4090 nla_put_failure:
4091 err = -ENOBUFS;
4092 free_msg:
4093 nlmsg_free(msg);
4094 return err;
4095 }
4096
nl80211_set_key(struct sk_buff * skb,struct genl_info * info)4097 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4098 {
4099 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4100 struct key_parse key;
4101 int err;
4102 struct net_device *dev = info->user_ptr[1];
4103
4104 err = nl80211_parse_key(info, &key);
4105 if (err)
4106 return err;
4107
4108 if (key.idx < 0)
4109 return -EINVAL;
4110
4111 /* Only support setting default key and
4112 * Extended Key ID action NL80211_KEY_SET_TX.
4113 */
4114 if (!key.def && !key.defmgmt && !key.defbeacon &&
4115 !(key.p.mode == NL80211_KEY_SET_TX))
4116 return -EINVAL;
4117
4118 wdev_lock(dev->ieee80211_ptr);
4119
4120 if (key.def) {
4121 if (!rdev->ops->set_default_key) {
4122 err = -EOPNOTSUPP;
4123 goto out;
4124 }
4125
4126 err = nl80211_key_allowed(dev->ieee80211_ptr);
4127 if (err)
4128 goto out;
4129
4130 err = rdev_set_default_key(rdev, dev, key.idx,
4131 key.def_uni, key.def_multi);
4132
4133 if (err)
4134 goto out;
4135
4136 #ifdef CONFIG_CFG80211_WEXT
4137 dev->ieee80211_ptr->wext.default_key = key.idx;
4138 #endif
4139 } else if (key.defmgmt) {
4140 if (key.def_uni || !key.def_multi) {
4141 err = -EINVAL;
4142 goto out;
4143 }
4144
4145 if (!rdev->ops->set_default_mgmt_key) {
4146 err = -EOPNOTSUPP;
4147 goto out;
4148 }
4149
4150 err = nl80211_key_allowed(dev->ieee80211_ptr);
4151 if (err)
4152 goto out;
4153
4154 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4155 if (err)
4156 goto out;
4157
4158 #ifdef CONFIG_CFG80211_WEXT
4159 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4160 #endif
4161 } else if (key.defbeacon) {
4162 if (key.def_uni || !key.def_multi) {
4163 err = -EINVAL;
4164 goto out;
4165 }
4166
4167 if (!rdev->ops->set_default_beacon_key) {
4168 err = -EOPNOTSUPP;
4169 goto out;
4170 }
4171
4172 err = nl80211_key_allowed(dev->ieee80211_ptr);
4173 if (err)
4174 goto out;
4175
4176 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4177 if (err)
4178 goto out;
4179 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4180 wiphy_ext_feature_isset(&rdev->wiphy,
4181 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4182 u8 *mac_addr = NULL;
4183
4184 if (info->attrs[NL80211_ATTR_MAC])
4185 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4186
4187 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4188 err = -EINVAL;
4189 goto out;
4190 }
4191
4192 err = rdev_add_key(rdev, dev, key.idx,
4193 NL80211_KEYTYPE_PAIRWISE,
4194 mac_addr, &key.p);
4195 } else {
4196 err = -EINVAL;
4197 }
4198 out:
4199 wdev_unlock(dev->ieee80211_ptr);
4200
4201 return err;
4202 }
4203
nl80211_new_key(struct sk_buff * skb,struct genl_info * info)4204 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4205 {
4206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4207 int err;
4208 struct net_device *dev = info->user_ptr[1];
4209 struct key_parse key;
4210 const u8 *mac_addr = NULL;
4211
4212 err = nl80211_parse_key(info, &key);
4213 if (err)
4214 return err;
4215
4216 if (!key.p.key) {
4217 GENL_SET_ERR_MSG(info, "no key");
4218 return -EINVAL;
4219 }
4220
4221 if (info->attrs[NL80211_ATTR_MAC])
4222 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4223
4224 if (key.type == -1) {
4225 if (mac_addr)
4226 key.type = NL80211_KEYTYPE_PAIRWISE;
4227 else
4228 key.type = NL80211_KEYTYPE_GROUP;
4229 }
4230
4231 /* for now */
4232 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4233 key.type != NL80211_KEYTYPE_GROUP) {
4234 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4235 return -EINVAL;
4236 }
4237
4238 if (key.type == NL80211_KEYTYPE_GROUP &&
4239 info->attrs[NL80211_ATTR_VLAN_ID])
4240 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4241
4242 if (!rdev->ops->add_key)
4243 return -EOPNOTSUPP;
4244
4245 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4246 key.type == NL80211_KEYTYPE_PAIRWISE,
4247 mac_addr)) {
4248 GENL_SET_ERR_MSG(info, "key setting validation failed");
4249 return -EINVAL;
4250 }
4251
4252 wdev_lock(dev->ieee80211_ptr);
4253 err = nl80211_key_allowed(dev->ieee80211_ptr);
4254 if (err)
4255 GENL_SET_ERR_MSG(info, "key not allowed");
4256 if (!err) {
4257 err = rdev_add_key(rdev, dev, key.idx,
4258 key.type == NL80211_KEYTYPE_PAIRWISE,
4259 mac_addr, &key.p);
4260 if (err)
4261 GENL_SET_ERR_MSG(info, "key addition failed");
4262 }
4263 wdev_unlock(dev->ieee80211_ptr);
4264
4265 return err;
4266 }
4267
nl80211_del_key(struct sk_buff * skb,struct genl_info * info)4268 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4269 {
4270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4271 int err;
4272 struct net_device *dev = info->user_ptr[1];
4273 u8 *mac_addr = NULL;
4274 struct key_parse key;
4275
4276 err = nl80211_parse_key(info, &key);
4277 if (err)
4278 return err;
4279
4280 if (info->attrs[NL80211_ATTR_MAC])
4281 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4282
4283 if (key.type == -1) {
4284 if (mac_addr)
4285 key.type = NL80211_KEYTYPE_PAIRWISE;
4286 else
4287 key.type = NL80211_KEYTYPE_GROUP;
4288 }
4289
4290 /* for now */
4291 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4292 key.type != NL80211_KEYTYPE_GROUP)
4293 return -EINVAL;
4294
4295 if (!cfg80211_valid_key_idx(rdev, key.idx,
4296 key.type == NL80211_KEYTYPE_PAIRWISE))
4297 return -EINVAL;
4298
4299 if (!rdev->ops->del_key)
4300 return -EOPNOTSUPP;
4301
4302 wdev_lock(dev->ieee80211_ptr);
4303 err = nl80211_key_allowed(dev->ieee80211_ptr);
4304
4305 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4306 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4307 err = -ENOENT;
4308
4309 if (!err)
4310 err = rdev_del_key(rdev, dev, key.idx,
4311 key.type == NL80211_KEYTYPE_PAIRWISE,
4312 mac_addr);
4313
4314 #ifdef CONFIG_CFG80211_WEXT
4315 if (!err) {
4316 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4317 dev->ieee80211_ptr->wext.default_key = -1;
4318 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4319 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4320 }
4321 #endif
4322 wdev_unlock(dev->ieee80211_ptr);
4323
4324 return err;
4325 }
4326
4327 /* This function returns an error or the number of nested attributes */
validate_acl_mac_addrs(struct nlattr * nl_attr)4328 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4329 {
4330 struct nlattr *attr;
4331 int n_entries = 0, tmp;
4332
4333 nla_for_each_nested(attr, nl_attr, tmp) {
4334 if (nla_len(attr) != ETH_ALEN)
4335 return -EINVAL;
4336
4337 n_entries++;
4338 }
4339
4340 return n_entries;
4341 }
4342
4343 /*
4344 * This function parses ACL information and allocates memory for ACL data.
4345 * On successful return, the calling function is responsible to free the
4346 * ACL buffer returned by this function.
4347 */
parse_acl_data(struct wiphy * wiphy,struct genl_info * info)4348 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4349 struct genl_info *info)
4350 {
4351 enum nl80211_acl_policy acl_policy;
4352 struct nlattr *attr;
4353 struct cfg80211_acl_data *acl;
4354 int i = 0, n_entries, tmp;
4355
4356 if (!wiphy->max_acl_mac_addrs)
4357 return ERR_PTR(-EOPNOTSUPP);
4358
4359 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4360 return ERR_PTR(-EINVAL);
4361
4362 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4363 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4364 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4365 return ERR_PTR(-EINVAL);
4366
4367 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4368 return ERR_PTR(-EINVAL);
4369
4370 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4371 if (n_entries < 0)
4372 return ERR_PTR(n_entries);
4373
4374 if (n_entries > wiphy->max_acl_mac_addrs)
4375 return ERR_PTR(-ENOTSUPP);
4376
4377 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4378 if (!acl)
4379 return ERR_PTR(-ENOMEM);
4380
4381 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4382 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4383 i++;
4384 }
4385
4386 acl->n_acl_entries = n_entries;
4387 acl->acl_policy = acl_policy;
4388
4389 return acl;
4390 }
4391
nl80211_set_mac_acl(struct sk_buff * skb,struct genl_info * info)4392 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4393 {
4394 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4395 struct net_device *dev = info->user_ptr[1];
4396 struct cfg80211_acl_data *acl;
4397 int err;
4398
4399 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4400 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4401 return -EOPNOTSUPP;
4402
4403 if (!dev->ieee80211_ptr->beacon_interval)
4404 return -EINVAL;
4405
4406 acl = parse_acl_data(&rdev->wiphy, info);
4407 if (IS_ERR(acl))
4408 return PTR_ERR(acl);
4409
4410 err = rdev_set_mac_acl(rdev, dev, acl);
4411
4412 kfree(acl);
4413
4414 return err;
4415 }
4416
rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len)4417 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4418 u8 *rates, u8 rates_len)
4419 {
4420 u8 i;
4421 u32 mask = 0;
4422
4423 for (i = 0; i < rates_len; i++) {
4424 int rate = (rates[i] & 0x7f) * 5;
4425 int ridx;
4426
4427 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4428 struct ieee80211_rate *srate =
4429 &sband->bitrates[ridx];
4430 if (rate == srate->bitrate) {
4431 mask |= 1 << ridx;
4432 break;
4433 }
4434 }
4435 if (ridx == sband->n_bitrates)
4436 return 0; /* rate not found */
4437 }
4438
4439 return mask;
4440 }
4441
ht_rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len,u8 mcs[IEEE80211_HT_MCS_MASK_LEN])4442 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4443 u8 *rates, u8 rates_len,
4444 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4445 {
4446 u8 i;
4447
4448 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4449
4450 for (i = 0; i < rates_len; i++) {
4451 int ridx, rbit;
4452
4453 ridx = rates[i] / 8;
4454 rbit = BIT(rates[i] % 8);
4455
4456 /* check validity */
4457 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4458 return false;
4459
4460 /* check availability */
4461 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4462 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4463 mcs[ridx] |= rbit;
4464 else
4465 return false;
4466 }
4467
4468 return true;
4469 }
4470
vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)4471 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4472 {
4473 u16 mcs_mask = 0;
4474
4475 switch (vht_mcs_map) {
4476 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4477 break;
4478 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4479 mcs_mask = 0x00FF;
4480 break;
4481 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4482 mcs_mask = 0x01FF;
4483 break;
4484 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4485 mcs_mask = 0x03FF;
4486 break;
4487 default:
4488 break;
4489 }
4490
4491 return mcs_mask;
4492 }
4493
vht_build_mcs_mask(u16 vht_mcs_map,u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])4494 static void vht_build_mcs_mask(u16 vht_mcs_map,
4495 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4496 {
4497 u8 nss;
4498
4499 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4500 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4501 vht_mcs_map >>= 2;
4502 }
4503 }
4504
vht_set_mcs_mask(struct ieee80211_supported_band * sband,struct nl80211_txrate_vht * txrate,u16 mcs[NL80211_VHT_NSS_MAX])4505 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4506 struct nl80211_txrate_vht *txrate,
4507 u16 mcs[NL80211_VHT_NSS_MAX])
4508 {
4509 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4510 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4511 u8 i;
4512
4513 if (!sband->vht_cap.vht_supported)
4514 return false;
4515
4516 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4517
4518 /* Build vht_mcs_mask from VHT capabilities */
4519 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4520
4521 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4522 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4523 mcs[i] = txrate->mcs[i];
4524 else
4525 return false;
4526 }
4527
4528 return true;
4529 }
4530
he_mcs_map_to_mcs_mask(u8 he_mcs_map)4531 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4532 {
4533 switch (he_mcs_map) {
4534 case IEEE80211_HE_MCS_NOT_SUPPORTED:
4535 return 0;
4536 case IEEE80211_HE_MCS_SUPPORT_0_7:
4537 return 0x00FF;
4538 case IEEE80211_HE_MCS_SUPPORT_0_9:
4539 return 0x03FF;
4540 case IEEE80211_HE_MCS_SUPPORT_0_11:
4541 return 0xFFF;
4542 default:
4543 break;
4544 }
4545 return 0;
4546 }
4547
he_build_mcs_mask(u16 he_mcs_map,u16 he_mcs_mask[NL80211_HE_NSS_MAX])4548 static void he_build_mcs_mask(u16 he_mcs_map,
4549 u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4550 {
4551 u8 nss;
4552
4553 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4554 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4555 he_mcs_map >>= 2;
4556 }
4557 }
4558
he_get_txmcsmap(struct genl_info * info,const struct ieee80211_sta_he_cap * he_cap)4559 static u16 he_get_txmcsmap(struct genl_info *info,
4560 const struct ieee80211_sta_he_cap *he_cap)
4561 {
4562 struct net_device *dev = info->user_ptr[1];
4563 struct wireless_dev *wdev = dev->ieee80211_ptr;
4564 __le16 tx_mcs;
4565
4566 switch (wdev->chandef.width) {
4567 case NL80211_CHAN_WIDTH_80P80:
4568 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4569 break;
4570 case NL80211_CHAN_WIDTH_160:
4571 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4572 break;
4573 default:
4574 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4575 break;
4576 }
4577 return le16_to_cpu(tx_mcs);
4578 }
4579
he_set_mcs_mask(struct genl_info * info,struct wireless_dev * wdev,struct ieee80211_supported_band * sband,struct nl80211_txrate_he * txrate,u16 mcs[NL80211_HE_NSS_MAX])4580 static bool he_set_mcs_mask(struct genl_info *info,
4581 struct wireless_dev *wdev,
4582 struct ieee80211_supported_band *sband,
4583 struct nl80211_txrate_he *txrate,
4584 u16 mcs[NL80211_HE_NSS_MAX])
4585 {
4586 const struct ieee80211_sta_he_cap *he_cap;
4587 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4588 u16 tx_mcs_map = 0;
4589 u8 i;
4590
4591 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4592 if (!he_cap)
4593 return false;
4594
4595 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4596
4597 tx_mcs_map = he_get_txmcsmap(info, he_cap);
4598
4599 /* Build he_mcs_mask from HE capabilities */
4600 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4601
4602 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4603 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4604 mcs[i] = txrate->mcs[i];
4605 else
4606 return false;
4607 }
4608
4609 return true;
4610 }
4611
nl80211_parse_tx_bitrate_mask(struct genl_info * info,struct nlattr * attrs[],enum nl80211_attrs attr,struct cfg80211_bitrate_mask * mask,struct net_device * dev)4612 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4613 struct nlattr *attrs[],
4614 enum nl80211_attrs attr,
4615 struct cfg80211_bitrate_mask *mask,
4616 struct net_device *dev)
4617 {
4618 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4620 struct wireless_dev *wdev = dev->ieee80211_ptr;
4621 int rem, i;
4622 struct nlattr *tx_rates;
4623 struct ieee80211_supported_band *sband;
4624 u16 vht_tx_mcs_map, he_tx_mcs_map;
4625
4626 memset(mask, 0, sizeof(*mask));
4627 /* Default to all rates enabled */
4628 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4629 const struct ieee80211_sta_he_cap *he_cap;
4630
4631 sband = rdev->wiphy.bands[i];
4632
4633 if (!sband)
4634 continue;
4635
4636 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4637 memcpy(mask->control[i].ht_mcs,
4638 sband->ht_cap.mcs.rx_mask,
4639 sizeof(mask->control[i].ht_mcs));
4640
4641 if (sband->vht_cap.vht_supported) {
4642 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4643 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4644 }
4645
4646 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4647 if (!he_cap)
4648 continue;
4649
4650 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4651 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4652
4653 mask->control[i].he_gi = 0xFF;
4654 mask->control[i].he_ltf = 0xFF;
4655 }
4656
4657 /* if no rates are given set it back to the defaults */
4658 if (!attrs[attr])
4659 goto out;
4660
4661 /* The nested attribute uses enum nl80211_band as the index. This maps
4662 * directly to the enum nl80211_band values used in cfg80211.
4663 */
4664 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4665 nla_for_each_nested(tx_rates, attrs[attr], rem) {
4666 enum nl80211_band band = nla_type(tx_rates);
4667 int err;
4668
4669 if (band < 0 || band >= NUM_NL80211_BANDS)
4670 return -EINVAL;
4671 sband = rdev->wiphy.bands[band];
4672 if (sband == NULL)
4673 return -EINVAL;
4674 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4675 tx_rates,
4676 nl80211_txattr_policy,
4677 info->extack);
4678 if (err)
4679 return err;
4680 if (tb[NL80211_TXRATE_LEGACY]) {
4681 mask->control[band].legacy = rateset_to_mask(
4682 sband,
4683 nla_data(tb[NL80211_TXRATE_LEGACY]),
4684 nla_len(tb[NL80211_TXRATE_LEGACY]));
4685 if ((mask->control[band].legacy == 0) &&
4686 nla_len(tb[NL80211_TXRATE_LEGACY]))
4687 return -EINVAL;
4688 }
4689 if (tb[NL80211_TXRATE_HT]) {
4690 if (!ht_rateset_to_mask(
4691 sband,
4692 nla_data(tb[NL80211_TXRATE_HT]),
4693 nla_len(tb[NL80211_TXRATE_HT]),
4694 mask->control[band].ht_mcs))
4695 return -EINVAL;
4696 }
4697 if (tb[NL80211_TXRATE_VHT]) {
4698 if (!vht_set_mcs_mask(
4699 sband,
4700 nla_data(tb[NL80211_TXRATE_VHT]),
4701 mask->control[band].vht_mcs))
4702 return -EINVAL;
4703 }
4704 if (tb[NL80211_TXRATE_GI]) {
4705 mask->control[band].gi =
4706 nla_get_u8(tb[NL80211_TXRATE_GI]);
4707 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4708 return -EINVAL;
4709 }
4710 if (tb[NL80211_TXRATE_HE] &&
4711 !he_set_mcs_mask(info, wdev, sband,
4712 nla_data(tb[NL80211_TXRATE_HE]),
4713 mask->control[band].he_mcs))
4714 return -EINVAL;
4715 if (tb[NL80211_TXRATE_HE_GI])
4716 mask->control[band].he_gi =
4717 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4718 if (tb[NL80211_TXRATE_HE_LTF])
4719 mask->control[band].he_ltf =
4720 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4721
4722 if (mask->control[band].legacy == 0) {
4723 /* don't allow empty legacy rates if HT, VHT or HE
4724 * are not even supported.
4725 */
4726 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4727 rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4728 ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4729 return -EINVAL;
4730
4731 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4732 if (mask->control[band].ht_mcs[i])
4733 goto out;
4734
4735 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4736 if (mask->control[band].vht_mcs[i])
4737 goto out;
4738
4739 for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4740 if (mask->control[band].he_mcs[i])
4741 goto out;
4742
4743 /* legacy and mcs rates may not be both empty */
4744 return -EINVAL;
4745 }
4746 }
4747
4748 out:
4749 return 0;
4750 }
4751
validate_beacon_tx_rate(struct cfg80211_registered_device * rdev,enum nl80211_band band,struct cfg80211_bitrate_mask * beacon_rate)4752 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4753 enum nl80211_band band,
4754 struct cfg80211_bitrate_mask *beacon_rate)
4755 {
4756 u32 count_ht, count_vht, i;
4757 u32 rate = beacon_rate->control[band].legacy;
4758
4759 /* Allow only one rate */
4760 if (hweight32(rate) > 1)
4761 return -EINVAL;
4762
4763 count_ht = 0;
4764 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4765 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4766 return -EINVAL;
4767 } else if (beacon_rate->control[band].ht_mcs[i]) {
4768 count_ht++;
4769 if (count_ht > 1)
4770 return -EINVAL;
4771 }
4772 if (count_ht && rate)
4773 return -EINVAL;
4774 }
4775
4776 count_vht = 0;
4777 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4778 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4779 return -EINVAL;
4780 } else if (beacon_rate->control[band].vht_mcs[i]) {
4781 count_vht++;
4782 if (count_vht > 1)
4783 return -EINVAL;
4784 }
4785 if (count_vht && rate)
4786 return -EINVAL;
4787 }
4788
4789 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4790 return -EINVAL;
4791
4792 if (rate &&
4793 !wiphy_ext_feature_isset(&rdev->wiphy,
4794 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4795 return -EINVAL;
4796 if (count_ht &&
4797 !wiphy_ext_feature_isset(&rdev->wiphy,
4798 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4799 return -EINVAL;
4800 if (count_vht &&
4801 !wiphy_ext_feature_isset(&rdev->wiphy,
4802 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4803 return -EINVAL;
4804
4805 return 0;
4806 }
4807
nl80211_parse_beacon(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct cfg80211_beacon_data * bcn)4808 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4809 struct nlattr *attrs[],
4810 struct cfg80211_beacon_data *bcn)
4811 {
4812 bool haveinfo = false;
4813 int err;
4814
4815 memset(bcn, 0, sizeof(*bcn));
4816
4817 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4818 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4819 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4820 if (!bcn->head_len)
4821 return -EINVAL;
4822 haveinfo = true;
4823 }
4824
4825 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4826 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4827 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4828 haveinfo = true;
4829 }
4830
4831 if (!haveinfo)
4832 return -EINVAL;
4833
4834 if (attrs[NL80211_ATTR_IE]) {
4835 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4836 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4837 }
4838
4839 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4840 bcn->proberesp_ies =
4841 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4842 bcn->proberesp_ies_len =
4843 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4844 }
4845
4846 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4847 bcn->assocresp_ies =
4848 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4849 bcn->assocresp_ies_len =
4850 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4851 }
4852
4853 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4854 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4855 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4856 }
4857
4858 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4859 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4860
4861 err = nla_parse_nested_deprecated(tb,
4862 NL80211_FTM_RESP_ATTR_MAX,
4863 attrs[NL80211_ATTR_FTM_RESPONDER],
4864 NULL, NULL);
4865 if (err)
4866 return err;
4867
4868 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4869 wiphy_ext_feature_isset(&rdev->wiphy,
4870 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4871 bcn->ftm_responder = 1;
4872 else
4873 return -EOPNOTSUPP;
4874
4875 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4876 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4877 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4878 }
4879
4880 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4881 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4882 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4883 }
4884 } else {
4885 bcn->ftm_responder = -1;
4886 }
4887
4888 return 0;
4889 }
4890
nl80211_parse_he_obss_pd(struct nlattr * attrs,struct ieee80211_he_obss_pd * he_obss_pd)4891 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4892 struct ieee80211_he_obss_pd *he_obss_pd)
4893 {
4894 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4895 int err;
4896
4897 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4898 he_obss_pd_policy, NULL);
4899 if (err)
4900 return err;
4901
4902 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4903 return -EINVAL;
4904
4905 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4906
4907 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4908 he_obss_pd->min_offset =
4909 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4910 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4911 he_obss_pd->max_offset =
4912 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4913 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4914 he_obss_pd->non_srg_max_offset =
4915 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4916
4917 if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4918 return -EINVAL;
4919
4920 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4921 memcpy(he_obss_pd->bss_color_bitmap,
4922 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4923 sizeof(he_obss_pd->bss_color_bitmap));
4924
4925 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4926 memcpy(he_obss_pd->partial_bssid_bitmap,
4927 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4928 sizeof(he_obss_pd->partial_bssid_bitmap));
4929
4930 he_obss_pd->enable = true;
4931
4932 return 0;
4933 }
4934
nl80211_parse_he_bss_color(struct nlattr * attrs,struct cfg80211_he_bss_color * he_bss_color)4935 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4936 struct cfg80211_he_bss_color *he_bss_color)
4937 {
4938 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4939 int err;
4940
4941 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4942 he_bss_color_policy, NULL);
4943 if (err)
4944 return err;
4945
4946 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4947 return -EINVAL;
4948
4949 he_bss_color->color =
4950 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4951 he_bss_color->enabled =
4952 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4953 he_bss_color->partial =
4954 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4955
4956 return 0;
4957 }
4958
nl80211_parse_fils_discovery(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)4959 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
4960 struct nlattr *attrs,
4961 struct cfg80211_ap_settings *params)
4962 {
4963 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
4964 int ret;
4965 struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery;
4966
4967 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4968 NL80211_EXT_FEATURE_FILS_DISCOVERY))
4969 return -EINVAL;
4970
4971 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
4972 NULL, NULL);
4973 if (ret)
4974 return ret;
4975
4976 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
4977 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
4978 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
4979 return -EINVAL;
4980
4981 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4982 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4983 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
4984 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
4985
4986 return 0;
4987 }
4988
4989 static int
nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)4990 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
4991 struct nlattr *attrs,
4992 struct cfg80211_ap_settings *params)
4993 {
4994 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
4995 int ret;
4996 struct cfg80211_unsol_bcast_probe_resp *presp =
4997 ¶ms->unsol_bcast_probe_resp;
4998
4999 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5000 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5001 return -EINVAL;
5002
5003 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5004 attrs, NULL, NULL);
5005 if (ret)
5006 return ret;
5007
5008 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5009 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5010 return -EINVAL;
5011
5012 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5013 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5014 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5015 return 0;
5016 }
5017
nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings * params,const u8 * rates)5018 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5019 const u8 *rates)
5020 {
5021 int i;
5022
5023 if (!rates)
5024 return;
5025
5026 for (i = 0; i < rates[1]; i++) {
5027 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5028 params->ht_required = true;
5029 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5030 params->vht_required = true;
5031 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5032 params->he_required = true;
5033 }
5034 }
5035
5036 /*
5037 * Since the nl80211 API didn't include, from the beginning, attributes about
5038 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5039 * benefit of drivers that rebuild IEs in the firmware.
5040 */
nl80211_calculate_ap_params(struct cfg80211_ap_settings * params)5041 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5042 {
5043 const struct cfg80211_beacon_data *bcn = ¶ms->beacon;
5044 size_t ies_len = bcn->tail_len;
5045 const u8 *ies = bcn->tail;
5046 const u8 *rates;
5047 const u8 *cap;
5048
5049 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5050 nl80211_check_ap_rate_selectors(params, rates);
5051
5052 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5053 nl80211_check_ap_rate_selectors(params, rates);
5054
5055 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5056 if (cap && cap[1] >= sizeof(*params->ht_cap))
5057 params->ht_cap = (void *)(cap + 2);
5058 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5059 if (cap && cap[1] >= sizeof(*params->vht_cap))
5060 params->vht_cap = (void *)(cap + 2);
5061 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5062 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5063 params->he_cap = (void *)(cap + 3);
5064 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5065 if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5066 params->he_oper = (void *)(cap + 3);
5067 }
5068
nl80211_get_ap_channel(struct cfg80211_registered_device * rdev,struct cfg80211_ap_settings * params)5069 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5070 struct cfg80211_ap_settings *params)
5071 {
5072 struct wireless_dev *wdev;
5073 bool ret = false;
5074
5075 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5076 if (wdev->iftype != NL80211_IFTYPE_AP &&
5077 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5078 continue;
5079
5080 if (!wdev->preset_chandef.chan)
5081 continue;
5082
5083 params->chandef = wdev->preset_chandef;
5084 ret = true;
5085 break;
5086 }
5087
5088 return ret;
5089 }
5090
nl80211_valid_auth_type(struct cfg80211_registered_device * rdev,enum nl80211_auth_type auth_type,enum nl80211_commands cmd)5091 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5092 enum nl80211_auth_type auth_type,
5093 enum nl80211_commands cmd)
5094 {
5095 if (auth_type > NL80211_AUTHTYPE_MAX)
5096 return false;
5097
5098 switch (cmd) {
5099 case NL80211_CMD_AUTHENTICATE:
5100 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5101 auth_type == NL80211_AUTHTYPE_SAE)
5102 return false;
5103 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5104 NL80211_EXT_FEATURE_FILS_STA) &&
5105 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5106 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5107 auth_type == NL80211_AUTHTYPE_FILS_PK))
5108 return false;
5109 return true;
5110 case NL80211_CMD_CONNECT:
5111 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5112 !wiphy_ext_feature_isset(&rdev->wiphy,
5113 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5114 auth_type == NL80211_AUTHTYPE_SAE)
5115 return false;
5116
5117 /* FILS with SK PFS or PK not supported yet */
5118 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5119 auth_type == NL80211_AUTHTYPE_FILS_PK)
5120 return false;
5121 if (!wiphy_ext_feature_isset(
5122 &rdev->wiphy,
5123 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5124 auth_type == NL80211_AUTHTYPE_FILS_SK)
5125 return false;
5126 return true;
5127 case NL80211_CMD_START_AP:
5128 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5129 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5130 auth_type == NL80211_AUTHTYPE_SAE)
5131 return false;
5132 /* FILS not supported yet */
5133 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5134 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5135 auth_type == NL80211_AUTHTYPE_FILS_PK)
5136 return false;
5137 return true;
5138 default:
5139 return false;
5140 }
5141 }
5142
nl80211_start_ap(struct sk_buff * skb,struct genl_info * info)5143 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5144 {
5145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5146 struct net_device *dev = info->user_ptr[1];
5147 struct wireless_dev *wdev = dev->ieee80211_ptr;
5148 struct cfg80211_ap_settings params;
5149 int err;
5150
5151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5153 return -EOPNOTSUPP;
5154
5155 if (!rdev->ops->start_ap)
5156 return -EOPNOTSUPP;
5157
5158 if (wdev->beacon_interval)
5159 return -EALREADY;
5160
5161 memset(¶ms, 0, sizeof(params));
5162
5163 /* these are required for START_AP */
5164 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5165 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5166 !info->attrs[NL80211_ATTR_BEACON_HEAD])
5167 return -EINVAL;
5168
5169 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon);
5170 if (err)
5171 return err;
5172
5173 params.beacon_interval =
5174 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5175 params.dtim_period =
5176 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5177
5178 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5179 params.beacon_interval);
5180 if (err)
5181 return err;
5182
5183 /*
5184 * In theory, some of these attributes should be required here
5185 * but since they were not used when the command was originally
5186 * added, keep them optional for old user space programs to let
5187 * them continue to work with drivers that do not need the
5188 * additional information -- drivers must check!
5189 */
5190 if (info->attrs[NL80211_ATTR_SSID]) {
5191 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5192 params.ssid_len =
5193 nla_len(info->attrs[NL80211_ATTR_SSID]);
5194 if (params.ssid_len == 0)
5195 return -EINVAL;
5196 }
5197
5198 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5199 params.hidden_ssid = nla_get_u32(
5200 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5201
5202 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5203
5204 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5205 params.auth_type = nla_get_u32(
5206 info->attrs[NL80211_ATTR_AUTH_TYPE]);
5207 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5208 NL80211_CMD_START_AP))
5209 return -EINVAL;
5210 } else
5211 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5212
5213 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto,
5214 NL80211_MAX_NR_CIPHER_SUITES);
5215 if (err)
5216 return err;
5217
5218 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5219 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5220 return -EOPNOTSUPP;
5221 params.inactivity_timeout = nla_get_u16(
5222 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5223 }
5224
5225 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5226 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5227 return -EINVAL;
5228 params.p2p_ctwindow =
5229 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5230 if (params.p2p_ctwindow != 0 &&
5231 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5232 return -EINVAL;
5233 }
5234
5235 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5236 u8 tmp;
5237
5238 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5239 return -EINVAL;
5240 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5241 params.p2p_opp_ps = tmp;
5242 if (params.p2p_opp_ps != 0 &&
5243 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5244 return -EINVAL;
5245 }
5246
5247 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5248 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
5249 if (err)
5250 return err;
5251 } else if (wdev->preset_chandef.chan) {
5252 params.chandef = wdev->preset_chandef;
5253 } else if (!nl80211_get_ap_channel(rdev, ¶ms))
5254 return -EINVAL;
5255
5256 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
5257 wdev->iftype))
5258 return -EINVAL;
5259
5260 if (info->attrs[NL80211_ATTR_TX_RATES]) {
5261 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5262 NL80211_ATTR_TX_RATES,
5263 ¶ms.beacon_rate,
5264 dev);
5265 if (err)
5266 return err;
5267
5268 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5269 ¶ms.beacon_rate);
5270 if (err)
5271 return err;
5272 }
5273
5274 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5275 params.smps_mode =
5276 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5277 switch (params.smps_mode) {
5278 case NL80211_SMPS_OFF:
5279 break;
5280 case NL80211_SMPS_STATIC:
5281 if (!(rdev->wiphy.features &
5282 NL80211_FEATURE_STATIC_SMPS))
5283 return -EINVAL;
5284 break;
5285 case NL80211_SMPS_DYNAMIC:
5286 if (!(rdev->wiphy.features &
5287 NL80211_FEATURE_DYNAMIC_SMPS))
5288 return -EINVAL;
5289 break;
5290 default:
5291 return -EINVAL;
5292 }
5293 } else {
5294 params.smps_mode = NL80211_SMPS_OFF;
5295 }
5296
5297 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5298 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5299 return -EOPNOTSUPP;
5300
5301 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5302 params.acl = parse_acl_data(&rdev->wiphy, info);
5303 if (IS_ERR(params.acl))
5304 return PTR_ERR(params.acl);
5305 }
5306
5307 params.twt_responder =
5308 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5309
5310 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5311 err = nl80211_parse_he_obss_pd(
5312 info->attrs[NL80211_ATTR_HE_OBSS_PD],
5313 ¶ms.he_obss_pd);
5314 if (err)
5315 goto out;
5316 }
5317
5318 if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5319 err = nl80211_parse_he_bss_color(
5320 info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5321 ¶ms.he_bss_color);
5322 if (err)
5323 goto out;
5324 }
5325
5326 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5327 err = nl80211_parse_fils_discovery(rdev,
5328 info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5329 ¶ms);
5330 if (err)
5331 goto out;
5332 }
5333
5334 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5335 err = nl80211_parse_unsol_bcast_probe_resp(
5336 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5337 ¶ms);
5338 if (err)
5339 goto out;
5340 }
5341
5342 nl80211_calculate_ap_params(¶ms);
5343
5344 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5345 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5346
5347 wdev_lock(wdev);
5348 err = rdev_start_ap(rdev, dev, ¶ms);
5349 if (!err) {
5350 wdev->preset_chandef = params.chandef;
5351 wdev->beacon_interval = params.beacon_interval;
5352 wdev->chandef = params.chandef;
5353 wdev->ssid_len = params.ssid_len;
5354 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5355
5356 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5357 wdev->conn_owner_nlportid = info->snd_portid;
5358 }
5359 wdev_unlock(wdev);
5360
5361 out:
5362 kfree(params.acl);
5363
5364 return err;
5365 }
5366
nl80211_set_beacon(struct sk_buff * skb,struct genl_info * info)5367 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5368 {
5369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5370 struct net_device *dev = info->user_ptr[1];
5371 struct wireless_dev *wdev = dev->ieee80211_ptr;
5372 struct cfg80211_beacon_data params;
5373 int err;
5374
5375 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5376 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5377 return -EOPNOTSUPP;
5378
5379 if (!rdev->ops->change_beacon)
5380 return -EOPNOTSUPP;
5381
5382 if (!wdev->beacon_interval)
5383 return -EINVAL;
5384
5385 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms);
5386 if (err)
5387 return err;
5388
5389 wdev_lock(wdev);
5390 err = rdev_change_beacon(rdev, dev, ¶ms);
5391 wdev_unlock(wdev);
5392
5393 return err;
5394 }
5395
nl80211_stop_ap(struct sk_buff * skb,struct genl_info * info)5396 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5397 {
5398 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5399 struct net_device *dev = info->user_ptr[1];
5400
5401 return cfg80211_stop_ap(rdev, dev, false);
5402 }
5403
5404 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5405 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5406 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5407 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5408 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5409 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5410 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5411 };
5412
parse_station_flags(struct genl_info * info,enum nl80211_iftype iftype,struct station_parameters * params)5413 static int parse_station_flags(struct genl_info *info,
5414 enum nl80211_iftype iftype,
5415 struct station_parameters *params)
5416 {
5417 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5418 struct nlattr *nla;
5419 int flag;
5420
5421 /*
5422 * Try parsing the new attribute first so userspace
5423 * can specify both for older kernels.
5424 */
5425 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5426 if (nla) {
5427 struct nl80211_sta_flag_update *sta_flags;
5428
5429 sta_flags = nla_data(nla);
5430 params->sta_flags_mask = sta_flags->mask;
5431 params->sta_flags_set = sta_flags->set;
5432 params->sta_flags_set &= params->sta_flags_mask;
5433 if ((params->sta_flags_mask |
5434 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5435 return -EINVAL;
5436 return 0;
5437 }
5438
5439 /* if present, parse the old attribute */
5440
5441 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5442 if (!nla)
5443 return 0;
5444
5445 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5446 return -EINVAL;
5447
5448 /*
5449 * Only allow certain flags for interface types so that
5450 * other attributes are silently ignored. Remember that
5451 * this is backward compatibility code with old userspace
5452 * and shouldn't be hit in other cases anyway.
5453 */
5454 switch (iftype) {
5455 case NL80211_IFTYPE_AP:
5456 case NL80211_IFTYPE_AP_VLAN:
5457 case NL80211_IFTYPE_P2P_GO:
5458 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5459 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5460 BIT(NL80211_STA_FLAG_WME) |
5461 BIT(NL80211_STA_FLAG_MFP);
5462 break;
5463 case NL80211_IFTYPE_P2P_CLIENT:
5464 case NL80211_IFTYPE_STATION:
5465 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5466 BIT(NL80211_STA_FLAG_TDLS_PEER);
5467 break;
5468 case NL80211_IFTYPE_MESH_POINT:
5469 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5470 BIT(NL80211_STA_FLAG_MFP) |
5471 BIT(NL80211_STA_FLAG_AUTHORIZED);
5472 break;
5473 default:
5474 return -EINVAL;
5475 }
5476
5477 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5478 if (flags[flag]) {
5479 params->sta_flags_set |= (1<<flag);
5480
5481 /* no longer support new API additions in old API */
5482 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5483 return -EINVAL;
5484 }
5485 }
5486
5487 return 0;
5488 }
5489
nl80211_put_sta_rate(struct sk_buff * msg,struct rate_info * info,int attr)5490 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5491 {
5492 struct nlattr *rate;
5493 u32 bitrate;
5494 u16 bitrate_compat;
5495 enum nl80211_rate_info rate_flg;
5496
5497 rate = nla_nest_start_noflag(msg, attr);
5498 if (!rate)
5499 return false;
5500
5501 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5502 bitrate = cfg80211_calculate_bitrate(info);
5503 /* report 16-bit bitrate only if we can */
5504 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5505 if (bitrate > 0 &&
5506 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5507 return false;
5508 if (bitrate_compat > 0 &&
5509 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5510 return false;
5511
5512 switch (info->bw) {
5513 case RATE_INFO_BW_5:
5514 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5515 break;
5516 case RATE_INFO_BW_10:
5517 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5518 break;
5519 default:
5520 WARN_ON(1);
5521 fallthrough;
5522 case RATE_INFO_BW_20:
5523 rate_flg = 0;
5524 break;
5525 case RATE_INFO_BW_40:
5526 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5527 break;
5528 case RATE_INFO_BW_80:
5529 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5530 break;
5531 case RATE_INFO_BW_160:
5532 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5533 break;
5534 case RATE_INFO_BW_HE_RU:
5535 rate_flg = 0;
5536 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5537 }
5538
5539 if (rate_flg && nla_put_flag(msg, rate_flg))
5540 return false;
5541
5542 if (info->flags & RATE_INFO_FLAGS_MCS) {
5543 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5544 return false;
5545 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5546 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5547 return false;
5548 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5549 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5550 return false;
5551 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5552 return false;
5553 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5554 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5555 return false;
5556 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5557 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5558 return false;
5559 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5560 return false;
5561 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5562 return false;
5563 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5564 return false;
5565 if (info->bw == RATE_INFO_BW_HE_RU &&
5566 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5567 info->he_ru_alloc))
5568 return false;
5569 }
5570
5571 nla_nest_end(msg, rate);
5572 return true;
5573 }
5574
nl80211_put_signal(struct sk_buff * msg,u8 mask,s8 * signal,int id)5575 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5576 int id)
5577 {
5578 void *attr;
5579 int i = 0;
5580
5581 if (!mask)
5582 return true;
5583
5584 attr = nla_nest_start_noflag(msg, id);
5585 if (!attr)
5586 return false;
5587
5588 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5589 if (!(mask & BIT(i)))
5590 continue;
5591
5592 if (nla_put_u8(msg, i, signal[i]))
5593 return false;
5594 }
5595
5596 nla_nest_end(msg, attr);
5597
5598 return true;
5599 }
5600
nl80211_send_station(struct sk_buff * msg,u32 cmd,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo)5601 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5602 u32 seq, int flags,
5603 struct cfg80211_registered_device *rdev,
5604 struct net_device *dev,
5605 const u8 *mac_addr, struct station_info *sinfo)
5606 {
5607 void *hdr;
5608 struct nlattr *sinfoattr, *bss_param;
5609
5610 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5611 if (!hdr) {
5612 cfg80211_sinfo_release_content(sinfo);
5613 return -1;
5614 }
5615
5616 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5617 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5618 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5619 goto nla_put_failure;
5620
5621 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5622 if (!sinfoattr)
5623 goto nla_put_failure;
5624
5625 #define PUT_SINFO(attr, memb, type) do { \
5626 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
5627 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5628 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
5629 sinfo->memb)) \
5630 goto nla_put_failure; \
5631 } while (0)
5632 #define PUT_SINFO_U64(attr, memb) do { \
5633 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5634 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
5635 sinfo->memb, NL80211_STA_INFO_PAD)) \
5636 goto nla_put_failure; \
5637 } while (0)
5638
5639 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5640 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5641 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5642
5643 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5644 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5645 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5646 (u32)sinfo->rx_bytes))
5647 goto nla_put_failure;
5648
5649 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5650 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5651 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5652 (u32)sinfo->tx_bytes))
5653 goto nla_put_failure;
5654
5655 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5656 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5657 PUT_SINFO(LLID, llid, u16);
5658 PUT_SINFO(PLID, plid, u16);
5659 PUT_SINFO(PLINK_STATE, plink_state, u8);
5660 PUT_SINFO_U64(RX_DURATION, rx_duration);
5661 PUT_SINFO_U64(TX_DURATION, tx_duration);
5662
5663 if (wiphy_ext_feature_isset(&rdev->wiphy,
5664 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5665 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5666
5667 switch (rdev->wiphy.signal_type) {
5668 case CFG80211_SIGNAL_TYPE_MBM:
5669 PUT_SINFO(SIGNAL, signal, u8);
5670 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5671 break;
5672 default:
5673 break;
5674 }
5675 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5676 if (!nl80211_put_signal(msg, sinfo->chains,
5677 sinfo->chain_signal,
5678 NL80211_STA_INFO_CHAIN_SIGNAL))
5679 goto nla_put_failure;
5680 }
5681 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5682 if (!nl80211_put_signal(msg, sinfo->chains,
5683 sinfo->chain_signal_avg,
5684 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5685 goto nla_put_failure;
5686 }
5687 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5688 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5689 NL80211_STA_INFO_TX_BITRATE))
5690 goto nla_put_failure;
5691 }
5692 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5693 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5694 NL80211_STA_INFO_RX_BITRATE))
5695 goto nla_put_failure;
5696 }
5697
5698 PUT_SINFO(RX_PACKETS, rx_packets, u32);
5699 PUT_SINFO(TX_PACKETS, tx_packets, u32);
5700 PUT_SINFO(TX_RETRIES, tx_retries, u32);
5701 PUT_SINFO(TX_FAILED, tx_failed, u32);
5702 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5703 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5704 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5705 PUT_SINFO(LOCAL_PM, local_pm, u32);
5706 PUT_SINFO(PEER_PM, peer_pm, u32);
5707 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5708 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5709 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5710
5711 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5712 bss_param = nla_nest_start_noflag(msg,
5713 NL80211_STA_INFO_BSS_PARAM);
5714 if (!bss_param)
5715 goto nla_put_failure;
5716
5717 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5718 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5719 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5720 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5721 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5722 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5723 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5724 sinfo->bss_param.dtim_period) ||
5725 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5726 sinfo->bss_param.beacon_interval))
5727 goto nla_put_failure;
5728
5729 nla_nest_end(msg, bss_param);
5730 }
5731 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5732 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5733 sizeof(struct nl80211_sta_flag_update),
5734 &sinfo->sta_flags))
5735 goto nla_put_failure;
5736
5737 PUT_SINFO_U64(T_OFFSET, t_offset);
5738 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5739 PUT_SINFO_U64(BEACON_RX, rx_beacon);
5740 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5741 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5742 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5743 if (wiphy_ext_feature_isset(&rdev->wiphy,
5744 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5745 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5746 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5747 }
5748
5749 #undef PUT_SINFO
5750 #undef PUT_SINFO_U64
5751
5752 if (sinfo->pertid) {
5753 struct nlattr *tidsattr;
5754 int tid;
5755
5756 tidsattr = nla_nest_start_noflag(msg,
5757 NL80211_STA_INFO_TID_STATS);
5758 if (!tidsattr)
5759 goto nla_put_failure;
5760
5761 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5762 struct cfg80211_tid_stats *tidstats;
5763 struct nlattr *tidattr;
5764
5765 tidstats = &sinfo->pertid[tid];
5766
5767 if (!tidstats->filled)
5768 continue;
5769
5770 tidattr = nla_nest_start_noflag(msg, tid + 1);
5771 if (!tidattr)
5772 goto nla_put_failure;
5773
5774 #define PUT_TIDVAL_U64(attr, memb) do { \
5775 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
5776 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
5777 tidstats->memb, NL80211_TID_STATS_PAD)) \
5778 goto nla_put_failure; \
5779 } while (0)
5780
5781 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5782 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5783 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5784 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5785
5786 #undef PUT_TIDVAL_U64
5787 if ((tidstats->filled &
5788 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5789 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5790 NL80211_TID_STATS_TXQ_STATS))
5791 goto nla_put_failure;
5792
5793 nla_nest_end(msg, tidattr);
5794 }
5795
5796 nla_nest_end(msg, tidsattr);
5797 }
5798
5799 nla_nest_end(msg, sinfoattr);
5800
5801 if (sinfo->assoc_req_ies_len &&
5802 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5803 sinfo->assoc_req_ies))
5804 goto nla_put_failure;
5805
5806 cfg80211_sinfo_release_content(sinfo);
5807 genlmsg_end(msg, hdr);
5808 return 0;
5809
5810 nla_put_failure:
5811 cfg80211_sinfo_release_content(sinfo);
5812 genlmsg_cancel(msg, hdr);
5813 return -EMSGSIZE;
5814 }
5815
nl80211_dump_station(struct sk_buff * skb,struct netlink_callback * cb)5816 static int nl80211_dump_station(struct sk_buff *skb,
5817 struct netlink_callback *cb)
5818 {
5819 struct station_info sinfo;
5820 struct cfg80211_registered_device *rdev;
5821 struct wireless_dev *wdev;
5822 u8 mac_addr[ETH_ALEN];
5823 int sta_idx = cb->args[2];
5824 int err;
5825
5826 rtnl_lock();
5827 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5828 if (err)
5829 goto out_err;
5830
5831 if (!wdev->netdev) {
5832 err = -EINVAL;
5833 goto out_err;
5834 }
5835
5836 if (!rdev->ops->dump_station) {
5837 err = -EOPNOTSUPP;
5838 goto out_err;
5839 }
5840
5841 while (1) {
5842 memset(&sinfo, 0, sizeof(sinfo));
5843 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5844 mac_addr, &sinfo);
5845 if (err == -ENOENT)
5846 break;
5847 if (err)
5848 goto out_err;
5849
5850 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5851 NETLINK_CB(cb->skb).portid,
5852 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5853 rdev, wdev->netdev, mac_addr,
5854 &sinfo) < 0)
5855 goto out;
5856
5857 sta_idx++;
5858 }
5859
5860 out:
5861 cb->args[2] = sta_idx;
5862 err = skb->len;
5863 out_err:
5864 rtnl_unlock();
5865
5866 return err;
5867 }
5868
nl80211_get_station(struct sk_buff * skb,struct genl_info * info)5869 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5870 {
5871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5872 struct net_device *dev = info->user_ptr[1];
5873 struct station_info sinfo;
5874 struct sk_buff *msg;
5875 u8 *mac_addr = NULL;
5876 int err;
5877
5878 memset(&sinfo, 0, sizeof(sinfo));
5879
5880 if (!info->attrs[NL80211_ATTR_MAC])
5881 return -EINVAL;
5882
5883 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5884
5885 if (!rdev->ops->get_station)
5886 return -EOPNOTSUPP;
5887
5888 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5889 if (err)
5890 return err;
5891
5892 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5893 if (!msg) {
5894 cfg80211_sinfo_release_content(&sinfo);
5895 return -ENOMEM;
5896 }
5897
5898 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5899 info->snd_portid, info->snd_seq, 0,
5900 rdev, dev, mac_addr, &sinfo) < 0) {
5901 nlmsg_free(msg);
5902 return -ENOBUFS;
5903 }
5904
5905 return genlmsg_reply(msg, info);
5906 }
5907
cfg80211_check_station_change(struct wiphy * wiphy,struct station_parameters * params,enum cfg80211_station_type statype)5908 int cfg80211_check_station_change(struct wiphy *wiphy,
5909 struct station_parameters *params,
5910 enum cfg80211_station_type statype)
5911 {
5912 if (params->listen_interval != -1 &&
5913 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5914 return -EINVAL;
5915
5916 if (params->support_p2p_ps != -1 &&
5917 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5918 return -EINVAL;
5919
5920 if (params->aid &&
5921 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5922 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5923 return -EINVAL;
5924
5925 /* When you run into this, adjust the code below for the new flag */
5926 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5927
5928 switch (statype) {
5929 case CFG80211_STA_MESH_PEER_KERNEL:
5930 case CFG80211_STA_MESH_PEER_USER:
5931 /*
5932 * No ignoring the TDLS flag here -- the userspace mesh
5933 * code doesn't have the bug of including TDLS in the
5934 * mask everywhere.
5935 */
5936 if (params->sta_flags_mask &
5937 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5938 BIT(NL80211_STA_FLAG_MFP) |
5939 BIT(NL80211_STA_FLAG_AUTHORIZED)))
5940 return -EINVAL;
5941 break;
5942 case CFG80211_STA_TDLS_PEER_SETUP:
5943 case CFG80211_STA_TDLS_PEER_ACTIVE:
5944 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5945 return -EINVAL;
5946 /* ignore since it can't change */
5947 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5948 break;
5949 default:
5950 /* disallow mesh-specific things */
5951 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5952 return -EINVAL;
5953 if (params->local_pm)
5954 return -EINVAL;
5955 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5956 return -EINVAL;
5957 }
5958
5959 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5960 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5961 /* TDLS can't be set, ... */
5962 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5963 return -EINVAL;
5964 /*
5965 * ... but don't bother the driver with it. This works around
5966 * a hostapd/wpa_supplicant issue -- it always includes the
5967 * TLDS_PEER flag in the mask even for AP mode.
5968 */
5969 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5970 }
5971
5972 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5973 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5974 /* reject other things that can't change */
5975 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5976 return -EINVAL;
5977 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5978 return -EINVAL;
5979 if (params->supported_rates)
5980 return -EINVAL;
5981 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5982 params->he_capa)
5983 return -EINVAL;
5984 }
5985
5986 if (statype != CFG80211_STA_AP_CLIENT &&
5987 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5988 if (params->vlan)
5989 return -EINVAL;
5990 }
5991
5992 switch (statype) {
5993 case CFG80211_STA_AP_MLME_CLIENT:
5994 /* Use this only for authorizing/unauthorizing a station */
5995 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5996 return -EOPNOTSUPP;
5997 break;
5998 case CFG80211_STA_AP_CLIENT:
5999 case CFG80211_STA_AP_CLIENT_UNASSOC:
6000 /* accept only the listed bits */
6001 if (params->sta_flags_mask &
6002 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6003 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6004 BIT(NL80211_STA_FLAG_ASSOCIATED) |
6005 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6006 BIT(NL80211_STA_FLAG_WME) |
6007 BIT(NL80211_STA_FLAG_MFP)))
6008 return -EINVAL;
6009
6010 /* but authenticated/associated only if driver handles it */
6011 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6012 params->sta_flags_mask &
6013 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6014 BIT(NL80211_STA_FLAG_ASSOCIATED)))
6015 return -EINVAL;
6016 break;
6017 case CFG80211_STA_IBSS:
6018 case CFG80211_STA_AP_STA:
6019 /* reject any changes other than AUTHORIZED */
6020 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6021 return -EINVAL;
6022 break;
6023 case CFG80211_STA_TDLS_PEER_SETUP:
6024 /* reject any changes other than AUTHORIZED or WME */
6025 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6026 BIT(NL80211_STA_FLAG_WME)))
6027 return -EINVAL;
6028 /* force (at least) rates when authorizing */
6029 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6030 !params->supported_rates)
6031 return -EINVAL;
6032 break;
6033 case CFG80211_STA_TDLS_PEER_ACTIVE:
6034 /* reject any changes */
6035 return -EINVAL;
6036 case CFG80211_STA_MESH_PEER_KERNEL:
6037 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6038 return -EINVAL;
6039 break;
6040 case CFG80211_STA_MESH_PEER_USER:
6041 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6042 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6043 return -EINVAL;
6044 break;
6045 }
6046
6047 /*
6048 * Older kernel versions ignored this attribute entirely, so don't
6049 * reject attempts to update it but mark it as unused instead so the
6050 * driver won't look at the data.
6051 */
6052 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6053 statype != CFG80211_STA_TDLS_PEER_SETUP)
6054 params->opmode_notif_used = false;
6055
6056 return 0;
6057 }
6058 EXPORT_SYMBOL(cfg80211_check_station_change);
6059
6060 /*
6061 * Get vlan interface making sure it is running and on the right wiphy.
6062 */
get_vlan(struct genl_info * info,struct cfg80211_registered_device * rdev)6063 static struct net_device *get_vlan(struct genl_info *info,
6064 struct cfg80211_registered_device *rdev)
6065 {
6066 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6067 struct net_device *v;
6068 int ret;
6069
6070 if (!vlanattr)
6071 return NULL;
6072
6073 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6074 if (!v)
6075 return ERR_PTR(-ENODEV);
6076
6077 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6078 ret = -EINVAL;
6079 goto error;
6080 }
6081
6082 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6083 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6084 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6085 ret = -EINVAL;
6086 goto error;
6087 }
6088
6089 if (!netif_running(v)) {
6090 ret = -ENETDOWN;
6091 goto error;
6092 }
6093
6094 return v;
6095 error:
6096 dev_put(v);
6097 return ERR_PTR(ret);
6098 }
6099
6100 static const struct nla_policy
6101 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6102 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6103 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6104 };
6105
nl80211_parse_sta_wme(struct genl_info * info,struct station_parameters * params)6106 static int nl80211_parse_sta_wme(struct genl_info *info,
6107 struct station_parameters *params)
6108 {
6109 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6110 struct nlattr *nla;
6111 int err;
6112
6113 /* parse WME attributes if present */
6114 if (!info->attrs[NL80211_ATTR_STA_WME])
6115 return 0;
6116
6117 nla = info->attrs[NL80211_ATTR_STA_WME];
6118 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6119 nl80211_sta_wme_policy,
6120 info->extack);
6121 if (err)
6122 return err;
6123
6124 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6125 params->uapsd_queues = nla_get_u8(
6126 tb[NL80211_STA_WME_UAPSD_QUEUES]);
6127 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6128 return -EINVAL;
6129
6130 if (tb[NL80211_STA_WME_MAX_SP])
6131 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6132
6133 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6134 return -EINVAL;
6135
6136 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6137
6138 return 0;
6139 }
6140
nl80211_parse_sta_channel_info(struct genl_info * info,struct station_parameters * params)6141 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6142 struct station_parameters *params)
6143 {
6144 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6145 params->supported_channels =
6146 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6147 params->supported_channels_len =
6148 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6149 /*
6150 * Need to include at least one (first channel, number of
6151 * channels) tuple for each subband (checked in policy),
6152 * and must have proper tuples for the rest of the data as well.
6153 */
6154 if (params->supported_channels_len % 2)
6155 return -EINVAL;
6156 }
6157
6158 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6159 params->supported_oper_classes =
6160 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6161 params->supported_oper_classes_len =
6162 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6163 }
6164 return 0;
6165 }
6166
nl80211_set_station_tdls(struct genl_info * info,struct station_parameters * params)6167 static int nl80211_set_station_tdls(struct genl_info *info,
6168 struct station_parameters *params)
6169 {
6170 int err;
6171 /* Dummy STA entry gets updated once the peer capabilities are known */
6172 if (info->attrs[NL80211_ATTR_PEER_AID])
6173 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6174 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6175 params->ht_capa =
6176 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6177 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6178 params->vht_capa =
6179 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6180 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6181 params->he_capa =
6182 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6183 params->he_capa_len =
6184 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6185 }
6186
6187 err = nl80211_parse_sta_channel_info(info, params);
6188 if (err)
6189 return err;
6190
6191 return nl80211_parse_sta_wme(info, params);
6192 }
6193
nl80211_parse_sta_txpower_setting(struct genl_info * info,struct station_parameters * params)6194 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6195 struct station_parameters *params)
6196 {
6197 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6198 int idx;
6199
6200 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6201 if (!rdev->ops->set_tx_power ||
6202 !wiphy_ext_feature_isset(&rdev->wiphy,
6203 NL80211_EXT_FEATURE_STA_TX_PWR))
6204 return -EOPNOTSUPP;
6205
6206 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6207 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6208
6209 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6210 idx = NL80211_ATTR_STA_TX_POWER;
6211
6212 if (info->attrs[idx])
6213 params->txpwr.power =
6214 nla_get_s16(info->attrs[idx]);
6215 else
6216 return -EINVAL;
6217 }
6218 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6219 }
6220
6221 return 0;
6222 }
6223
nl80211_set_station(struct sk_buff * skb,struct genl_info * info)6224 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6225 {
6226 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6227 struct net_device *dev = info->user_ptr[1];
6228 struct station_parameters params;
6229 u8 *mac_addr;
6230 int err;
6231
6232 memset(¶ms, 0, sizeof(params));
6233
6234 if (!rdev->ops->change_station)
6235 return -EOPNOTSUPP;
6236
6237 /*
6238 * AID and listen_interval properties can be set only for unassociated
6239 * station. Include these parameters here and will check them in
6240 * cfg80211_check_station_change().
6241 */
6242 if (info->attrs[NL80211_ATTR_STA_AID])
6243 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6244
6245 if (info->attrs[NL80211_ATTR_VLAN_ID])
6246 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6247
6248 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6249 params.listen_interval =
6250 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6251 else
6252 params.listen_interval = -1;
6253
6254 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6255 params.support_p2p_ps =
6256 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6257 else
6258 params.support_p2p_ps = -1;
6259
6260 if (!info->attrs[NL80211_ATTR_MAC])
6261 return -EINVAL;
6262
6263 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6264
6265 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6266 params.supported_rates =
6267 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6268 params.supported_rates_len =
6269 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6270 }
6271
6272 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6273 params.capability =
6274 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6275 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6276 }
6277
6278 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6279 params.ext_capab =
6280 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6281 params.ext_capab_len =
6282 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6283 }
6284
6285 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
6286 return -EINVAL;
6287
6288 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6289 params.plink_action =
6290 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6291
6292 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6293 params.plink_state =
6294 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6295 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6296 params.peer_aid = nla_get_u16(
6297 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6298 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6299 }
6300
6301 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6302 params.local_pm = nla_get_u32(
6303 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6304
6305 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6306 params.opmode_notif_used = true;
6307 params.opmode_notif =
6308 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6309 }
6310
6311 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6312 params.he_6ghz_capa =
6313 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6314
6315 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6316 params.airtime_weight =
6317 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6318
6319 if (params.airtime_weight &&
6320 !wiphy_ext_feature_isset(&rdev->wiphy,
6321 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6322 return -EOPNOTSUPP;
6323
6324 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
6325 if (err)
6326 return err;
6327
6328 /* Include parameters for TDLS peer (will check later) */
6329 err = nl80211_set_station_tdls(info, ¶ms);
6330 if (err)
6331 return err;
6332
6333 params.vlan = get_vlan(info, rdev);
6334 if (IS_ERR(params.vlan))
6335 return PTR_ERR(params.vlan);
6336
6337 switch (dev->ieee80211_ptr->iftype) {
6338 case NL80211_IFTYPE_AP:
6339 case NL80211_IFTYPE_AP_VLAN:
6340 case NL80211_IFTYPE_P2P_GO:
6341 case NL80211_IFTYPE_P2P_CLIENT:
6342 case NL80211_IFTYPE_STATION:
6343 case NL80211_IFTYPE_ADHOC:
6344 case NL80211_IFTYPE_MESH_POINT:
6345 break;
6346 default:
6347 err = -EOPNOTSUPP;
6348 goto out_put_vlan;
6349 }
6350
6351 /* driver will call cfg80211_check_station_change() */
6352 err = rdev_change_station(rdev, dev, mac_addr, ¶ms);
6353
6354 out_put_vlan:
6355 if (params.vlan)
6356 dev_put(params.vlan);
6357
6358 return err;
6359 }
6360
nl80211_new_station(struct sk_buff * skb,struct genl_info * info)6361 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6362 {
6363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6364 int err;
6365 struct net_device *dev = info->user_ptr[1];
6366 struct station_parameters params;
6367 u8 *mac_addr = NULL;
6368 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6369 BIT(NL80211_STA_FLAG_ASSOCIATED);
6370
6371 memset(¶ms, 0, sizeof(params));
6372
6373 if (!rdev->ops->add_station)
6374 return -EOPNOTSUPP;
6375
6376 if (!info->attrs[NL80211_ATTR_MAC])
6377 return -EINVAL;
6378
6379 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6380 return -EINVAL;
6381
6382 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6383 return -EINVAL;
6384
6385 if (!info->attrs[NL80211_ATTR_STA_AID] &&
6386 !info->attrs[NL80211_ATTR_PEER_AID])
6387 return -EINVAL;
6388
6389 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6390 params.supported_rates =
6391 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6392 params.supported_rates_len =
6393 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6394 params.listen_interval =
6395 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6396
6397 if (info->attrs[NL80211_ATTR_VLAN_ID])
6398 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6399
6400 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6401 params.support_p2p_ps =
6402 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6403 } else {
6404 /*
6405 * if not specified, assume it's supported for P2P GO interface,
6406 * and is NOT supported for AP interface
6407 */
6408 params.support_p2p_ps =
6409 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6410 }
6411
6412 if (info->attrs[NL80211_ATTR_PEER_AID])
6413 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6414 else
6415 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6416
6417 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6418 params.capability =
6419 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6420 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6421 }
6422
6423 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6424 params.ext_capab =
6425 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6426 params.ext_capab_len =
6427 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6428 }
6429
6430 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6431 params.ht_capa =
6432 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6433
6434 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6435 params.vht_capa =
6436 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6437
6438 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6439 params.he_capa =
6440 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6441 params.he_capa_len =
6442 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6443 }
6444
6445 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6446 params.he_6ghz_capa =
6447 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6448
6449 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6450 params.opmode_notif_used = true;
6451 params.opmode_notif =
6452 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6453 }
6454
6455 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6456 params.plink_action =
6457 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6458
6459 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6460 params.airtime_weight =
6461 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6462
6463 if (params.airtime_weight &&
6464 !wiphy_ext_feature_isset(&rdev->wiphy,
6465 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6466 return -EOPNOTSUPP;
6467
6468 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
6469 if (err)
6470 return err;
6471
6472 err = nl80211_parse_sta_channel_info(info, ¶ms);
6473 if (err)
6474 return err;
6475
6476 err = nl80211_parse_sta_wme(info, ¶ms);
6477 if (err)
6478 return err;
6479
6480 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
6481 return -EINVAL;
6482
6483 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6484 * as userspace might just pass through the capabilities from the IEs
6485 * directly, rather than enforcing this restriction and returning an
6486 * error in this case.
6487 */
6488 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6489 params.ht_capa = NULL;
6490 params.vht_capa = NULL;
6491
6492 /* HE requires WME */
6493 if (params.he_capa_len || params.he_6ghz_capa)
6494 return -EINVAL;
6495 }
6496
6497 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6498 if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6499 return -EINVAL;
6500
6501 /* When you run into this, adjust the code below for the new flag */
6502 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6503
6504 switch (dev->ieee80211_ptr->iftype) {
6505 case NL80211_IFTYPE_AP:
6506 case NL80211_IFTYPE_AP_VLAN:
6507 case NL80211_IFTYPE_P2P_GO:
6508 /* ignore WME attributes if iface/sta is not capable */
6509 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6510 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6511 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6512
6513 /* TDLS peers cannot be added */
6514 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6515 info->attrs[NL80211_ATTR_PEER_AID])
6516 return -EINVAL;
6517 /* but don't bother the driver with it */
6518 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6519
6520 /* allow authenticated/associated only if driver handles it */
6521 if (!(rdev->wiphy.features &
6522 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6523 params.sta_flags_mask & auth_assoc)
6524 return -EINVAL;
6525
6526 /* Older userspace, or userspace wanting to be compatible with
6527 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6528 * and assoc flags in the mask, but assumes the station will be
6529 * added as associated anyway since this was the required driver
6530 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6531 * introduced.
6532 * In order to not bother drivers with this quirk in the API
6533 * set the flags in both the mask and set for new stations in
6534 * this case.
6535 */
6536 if (!(params.sta_flags_mask & auth_assoc)) {
6537 params.sta_flags_mask |= auth_assoc;
6538 params.sta_flags_set |= auth_assoc;
6539 }
6540
6541 /* must be last in here for error handling */
6542 params.vlan = get_vlan(info, rdev);
6543 if (IS_ERR(params.vlan))
6544 return PTR_ERR(params.vlan);
6545 break;
6546 case NL80211_IFTYPE_MESH_POINT:
6547 /* ignore uAPSD data */
6548 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6549
6550 /* associated is disallowed */
6551 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6552 return -EINVAL;
6553 /* TDLS peers cannot be added */
6554 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6555 info->attrs[NL80211_ATTR_PEER_AID])
6556 return -EINVAL;
6557 break;
6558 case NL80211_IFTYPE_STATION:
6559 case NL80211_IFTYPE_P2P_CLIENT:
6560 /* ignore uAPSD data */
6561 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6562
6563 /* these are disallowed */
6564 if (params.sta_flags_mask &
6565 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6566 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6567 return -EINVAL;
6568 /* Only TDLS peers can be added */
6569 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6570 return -EINVAL;
6571 /* Can only add if TDLS ... */
6572 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6573 return -EOPNOTSUPP;
6574 /* ... with external setup is supported */
6575 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6576 return -EOPNOTSUPP;
6577 /*
6578 * Older wpa_supplicant versions always mark the TDLS peer
6579 * as authorized, but it shouldn't yet be.
6580 */
6581 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6582 break;
6583 default:
6584 return -EOPNOTSUPP;
6585 }
6586
6587 /* be aware of params.vlan when changing code here */
6588
6589 err = rdev_add_station(rdev, dev, mac_addr, ¶ms);
6590
6591 if (params.vlan)
6592 dev_put(params.vlan);
6593 return err;
6594 }
6595
nl80211_del_station(struct sk_buff * skb,struct genl_info * info)6596 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6597 {
6598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6599 struct net_device *dev = info->user_ptr[1];
6600 struct station_del_parameters params;
6601
6602 memset(¶ms, 0, sizeof(params));
6603
6604 if (info->attrs[NL80211_ATTR_MAC])
6605 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6606
6607 switch (dev->ieee80211_ptr->iftype) {
6608 case NL80211_IFTYPE_AP:
6609 case NL80211_IFTYPE_AP_VLAN:
6610 case NL80211_IFTYPE_MESH_POINT:
6611 case NL80211_IFTYPE_P2P_GO:
6612 /* always accept these */
6613 break;
6614 case NL80211_IFTYPE_ADHOC:
6615 /* conditionally accept */
6616 if (wiphy_ext_feature_isset(&rdev->wiphy,
6617 NL80211_EXT_FEATURE_DEL_IBSS_STA))
6618 break;
6619 return -EINVAL;
6620 default:
6621 return -EINVAL;
6622 }
6623
6624 if (!rdev->ops->del_station)
6625 return -EOPNOTSUPP;
6626
6627 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6628 params.subtype =
6629 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6630 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6631 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6632 return -EINVAL;
6633 } else {
6634 /* Default to Deauthentication frame */
6635 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6636 }
6637
6638 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6639 params.reason_code =
6640 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6641 if (params.reason_code == 0)
6642 return -EINVAL; /* 0 is reserved */
6643 } else {
6644 /* Default to reason code 2 */
6645 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6646 }
6647
6648 return rdev_del_station(rdev, dev, ¶ms);
6649 }
6650
nl80211_send_mpath(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)6651 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6652 int flags, struct net_device *dev,
6653 u8 *dst, u8 *next_hop,
6654 struct mpath_info *pinfo)
6655 {
6656 void *hdr;
6657 struct nlattr *pinfoattr;
6658
6659 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6660 if (!hdr)
6661 return -1;
6662
6663 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6664 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6665 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6666 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6667 goto nla_put_failure;
6668
6669 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6670 if (!pinfoattr)
6671 goto nla_put_failure;
6672 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6673 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6674 pinfo->frame_qlen))
6675 goto nla_put_failure;
6676 if (((pinfo->filled & MPATH_INFO_SN) &&
6677 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6678 ((pinfo->filled & MPATH_INFO_METRIC) &&
6679 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6680 pinfo->metric)) ||
6681 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6682 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6683 pinfo->exptime)) ||
6684 ((pinfo->filled & MPATH_INFO_FLAGS) &&
6685 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6686 pinfo->flags)) ||
6687 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6688 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6689 pinfo->discovery_timeout)) ||
6690 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6691 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6692 pinfo->discovery_retries)) ||
6693 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6694 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6695 pinfo->hop_count)) ||
6696 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6697 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6698 pinfo->path_change_count)))
6699 goto nla_put_failure;
6700
6701 nla_nest_end(msg, pinfoattr);
6702
6703 genlmsg_end(msg, hdr);
6704 return 0;
6705
6706 nla_put_failure:
6707 genlmsg_cancel(msg, hdr);
6708 return -EMSGSIZE;
6709 }
6710
nl80211_dump_mpath(struct sk_buff * skb,struct netlink_callback * cb)6711 static int nl80211_dump_mpath(struct sk_buff *skb,
6712 struct netlink_callback *cb)
6713 {
6714 struct mpath_info pinfo;
6715 struct cfg80211_registered_device *rdev;
6716 struct wireless_dev *wdev;
6717 u8 dst[ETH_ALEN];
6718 u8 next_hop[ETH_ALEN];
6719 int path_idx = cb->args[2];
6720 int err;
6721
6722 rtnl_lock();
6723 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6724 if (err)
6725 goto out_err;
6726
6727 if (!rdev->ops->dump_mpath) {
6728 err = -EOPNOTSUPP;
6729 goto out_err;
6730 }
6731
6732 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6733 err = -EOPNOTSUPP;
6734 goto out_err;
6735 }
6736
6737 while (1) {
6738 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6739 next_hop, &pinfo);
6740 if (err == -ENOENT)
6741 break;
6742 if (err)
6743 goto out_err;
6744
6745 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6746 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6747 wdev->netdev, dst, next_hop,
6748 &pinfo) < 0)
6749 goto out;
6750
6751 path_idx++;
6752 }
6753
6754 out:
6755 cb->args[2] = path_idx;
6756 err = skb->len;
6757 out_err:
6758 rtnl_unlock();
6759 return err;
6760 }
6761
nl80211_get_mpath(struct sk_buff * skb,struct genl_info * info)6762 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6763 {
6764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6765 int err;
6766 struct net_device *dev = info->user_ptr[1];
6767 struct mpath_info pinfo;
6768 struct sk_buff *msg;
6769 u8 *dst = NULL;
6770 u8 next_hop[ETH_ALEN];
6771
6772 memset(&pinfo, 0, sizeof(pinfo));
6773
6774 if (!info->attrs[NL80211_ATTR_MAC])
6775 return -EINVAL;
6776
6777 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6778
6779 if (!rdev->ops->get_mpath)
6780 return -EOPNOTSUPP;
6781
6782 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6783 return -EOPNOTSUPP;
6784
6785 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6786 if (err)
6787 return err;
6788
6789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6790 if (!msg)
6791 return -ENOMEM;
6792
6793 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6794 dev, dst, next_hop, &pinfo) < 0) {
6795 nlmsg_free(msg);
6796 return -ENOBUFS;
6797 }
6798
6799 return genlmsg_reply(msg, info);
6800 }
6801
nl80211_set_mpath(struct sk_buff * skb,struct genl_info * info)6802 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6803 {
6804 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6805 struct net_device *dev = info->user_ptr[1];
6806 u8 *dst = NULL;
6807 u8 *next_hop = NULL;
6808
6809 if (!info->attrs[NL80211_ATTR_MAC])
6810 return -EINVAL;
6811
6812 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6813 return -EINVAL;
6814
6815 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6816 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6817
6818 if (!rdev->ops->change_mpath)
6819 return -EOPNOTSUPP;
6820
6821 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6822 return -EOPNOTSUPP;
6823
6824 return rdev_change_mpath(rdev, dev, dst, next_hop);
6825 }
6826
nl80211_new_mpath(struct sk_buff * skb,struct genl_info * info)6827 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6828 {
6829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6830 struct net_device *dev = info->user_ptr[1];
6831 u8 *dst = NULL;
6832 u8 *next_hop = NULL;
6833
6834 if (!info->attrs[NL80211_ATTR_MAC])
6835 return -EINVAL;
6836
6837 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6838 return -EINVAL;
6839
6840 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6841 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6842
6843 if (!rdev->ops->add_mpath)
6844 return -EOPNOTSUPP;
6845
6846 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6847 return -EOPNOTSUPP;
6848
6849 return rdev_add_mpath(rdev, dev, dst, next_hop);
6850 }
6851
nl80211_del_mpath(struct sk_buff * skb,struct genl_info * info)6852 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6853 {
6854 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6855 struct net_device *dev = info->user_ptr[1];
6856 u8 *dst = NULL;
6857
6858 if (info->attrs[NL80211_ATTR_MAC])
6859 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6860
6861 if (!rdev->ops->del_mpath)
6862 return -EOPNOTSUPP;
6863
6864 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6865 return -EOPNOTSUPP;
6866
6867 return rdev_del_mpath(rdev, dev, dst);
6868 }
6869
nl80211_get_mpp(struct sk_buff * skb,struct genl_info * info)6870 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6871 {
6872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6873 int err;
6874 struct net_device *dev = info->user_ptr[1];
6875 struct mpath_info pinfo;
6876 struct sk_buff *msg;
6877 u8 *dst = NULL;
6878 u8 mpp[ETH_ALEN];
6879
6880 memset(&pinfo, 0, sizeof(pinfo));
6881
6882 if (!info->attrs[NL80211_ATTR_MAC])
6883 return -EINVAL;
6884
6885 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6886
6887 if (!rdev->ops->get_mpp)
6888 return -EOPNOTSUPP;
6889
6890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6891 return -EOPNOTSUPP;
6892
6893 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6894 if (err)
6895 return err;
6896
6897 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6898 if (!msg)
6899 return -ENOMEM;
6900
6901 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6902 dev, dst, mpp, &pinfo) < 0) {
6903 nlmsg_free(msg);
6904 return -ENOBUFS;
6905 }
6906
6907 return genlmsg_reply(msg, info);
6908 }
6909
nl80211_dump_mpp(struct sk_buff * skb,struct netlink_callback * cb)6910 static int nl80211_dump_mpp(struct sk_buff *skb,
6911 struct netlink_callback *cb)
6912 {
6913 struct mpath_info pinfo;
6914 struct cfg80211_registered_device *rdev;
6915 struct wireless_dev *wdev;
6916 u8 dst[ETH_ALEN];
6917 u8 mpp[ETH_ALEN];
6918 int path_idx = cb->args[2];
6919 int err;
6920
6921 rtnl_lock();
6922 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6923 if (err)
6924 goto out_err;
6925
6926 if (!rdev->ops->dump_mpp) {
6927 err = -EOPNOTSUPP;
6928 goto out_err;
6929 }
6930
6931 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6932 err = -EOPNOTSUPP;
6933 goto out_err;
6934 }
6935
6936 while (1) {
6937 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6938 mpp, &pinfo);
6939 if (err == -ENOENT)
6940 break;
6941 if (err)
6942 goto out_err;
6943
6944 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6945 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6946 wdev->netdev, dst, mpp,
6947 &pinfo) < 0)
6948 goto out;
6949
6950 path_idx++;
6951 }
6952
6953 out:
6954 cb->args[2] = path_idx;
6955 err = skb->len;
6956 out_err:
6957 rtnl_unlock();
6958 return err;
6959 }
6960
nl80211_set_bss(struct sk_buff * skb,struct genl_info * info)6961 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6962 {
6963 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6964 struct net_device *dev = info->user_ptr[1];
6965 struct wireless_dev *wdev = dev->ieee80211_ptr;
6966 struct bss_parameters params;
6967 int err;
6968
6969 memset(¶ms, 0, sizeof(params));
6970 /* default to not changing parameters */
6971 params.use_cts_prot = -1;
6972 params.use_short_preamble = -1;
6973 params.use_short_slot_time = -1;
6974 params.ap_isolate = -1;
6975 params.ht_opmode = -1;
6976 params.p2p_ctwindow = -1;
6977 params.p2p_opp_ps = -1;
6978
6979 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6980 params.use_cts_prot =
6981 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6982 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6983 params.use_short_preamble =
6984 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6985 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6986 params.use_short_slot_time =
6987 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6988 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6989 params.basic_rates =
6990 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6991 params.basic_rates_len =
6992 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6993 }
6994 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6995 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6996 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6997 params.ht_opmode =
6998 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6999
7000 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7001 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7002 return -EINVAL;
7003 params.p2p_ctwindow =
7004 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7005 if (params.p2p_ctwindow != 0 &&
7006 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7007 return -EINVAL;
7008 }
7009
7010 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7011 u8 tmp;
7012
7013 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7014 return -EINVAL;
7015 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7016 params.p2p_opp_ps = tmp;
7017 if (params.p2p_opp_ps &&
7018 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7019 return -EINVAL;
7020 }
7021
7022 if (!rdev->ops->change_bss)
7023 return -EOPNOTSUPP;
7024
7025 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7026 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7027 return -EOPNOTSUPP;
7028
7029 wdev_lock(wdev);
7030 err = rdev_change_bss(rdev, dev, ¶ms);
7031 wdev_unlock(wdev);
7032
7033 return err;
7034 }
7035
nl80211_req_set_reg(struct sk_buff * skb,struct genl_info * info)7036 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7037 {
7038 char *data = NULL;
7039 bool is_indoor;
7040 enum nl80211_user_reg_hint_type user_reg_hint_type;
7041 u32 owner_nlportid;
7042
7043 /*
7044 * You should only get this when cfg80211 hasn't yet initialized
7045 * completely when built-in to the kernel right between the time
7046 * window between nl80211_init() and regulatory_init(), if that is
7047 * even possible.
7048 */
7049 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7050 return -EINPROGRESS;
7051
7052 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7053 user_reg_hint_type =
7054 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7055 else
7056 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7057
7058 switch (user_reg_hint_type) {
7059 case NL80211_USER_REG_HINT_USER:
7060 case NL80211_USER_REG_HINT_CELL_BASE:
7061 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7062 return -EINVAL;
7063
7064 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7065 return regulatory_hint_user(data, user_reg_hint_type);
7066 case NL80211_USER_REG_HINT_INDOOR:
7067 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7068 owner_nlportid = info->snd_portid;
7069 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7070 } else {
7071 owner_nlportid = 0;
7072 is_indoor = true;
7073 }
7074
7075 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7076 default:
7077 return -EINVAL;
7078 }
7079 }
7080
nl80211_reload_regdb(struct sk_buff * skb,struct genl_info * info)7081 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7082 {
7083 return reg_reload_regdb();
7084 }
7085
nl80211_get_mesh_config(struct sk_buff * skb,struct genl_info * info)7086 static int nl80211_get_mesh_config(struct sk_buff *skb,
7087 struct genl_info *info)
7088 {
7089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7090 struct net_device *dev = info->user_ptr[1];
7091 struct wireless_dev *wdev = dev->ieee80211_ptr;
7092 struct mesh_config cur_params;
7093 int err = 0;
7094 void *hdr;
7095 struct nlattr *pinfoattr;
7096 struct sk_buff *msg;
7097
7098 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7099 return -EOPNOTSUPP;
7100
7101 if (!rdev->ops->get_mesh_config)
7102 return -EOPNOTSUPP;
7103
7104 wdev_lock(wdev);
7105 /* If not connected, get default parameters */
7106 if (!wdev->mesh_id_len)
7107 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7108 else
7109 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7110 wdev_unlock(wdev);
7111
7112 if (err)
7113 return err;
7114
7115 /* Draw up a netlink message to send back */
7116 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7117 if (!msg)
7118 return -ENOMEM;
7119 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7120 NL80211_CMD_GET_MESH_CONFIG);
7121 if (!hdr)
7122 goto out;
7123 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7124 if (!pinfoattr)
7125 goto nla_put_failure;
7126 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7127 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7128 cur_params.dot11MeshRetryTimeout) ||
7129 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7130 cur_params.dot11MeshConfirmTimeout) ||
7131 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7132 cur_params.dot11MeshHoldingTimeout) ||
7133 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7134 cur_params.dot11MeshMaxPeerLinks) ||
7135 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7136 cur_params.dot11MeshMaxRetries) ||
7137 nla_put_u8(msg, NL80211_MESHCONF_TTL,
7138 cur_params.dot11MeshTTL) ||
7139 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7140 cur_params.element_ttl) ||
7141 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7142 cur_params.auto_open_plinks) ||
7143 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7144 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7145 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7146 cur_params.dot11MeshHWMPmaxPREQretries) ||
7147 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7148 cur_params.path_refresh_time) ||
7149 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7150 cur_params.min_discovery_timeout) ||
7151 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7152 cur_params.dot11MeshHWMPactivePathTimeout) ||
7153 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7154 cur_params.dot11MeshHWMPpreqMinInterval) ||
7155 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7156 cur_params.dot11MeshHWMPperrMinInterval) ||
7157 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7158 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7159 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7160 cur_params.dot11MeshHWMPRootMode) ||
7161 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7162 cur_params.dot11MeshHWMPRannInterval) ||
7163 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7164 cur_params.dot11MeshGateAnnouncementProtocol) ||
7165 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7166 cur_params.dot11MeshForwarding) ||
7167 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7168 cur_params.rssi_threshold) ||
7169 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7170 cur_params.ht_opmode) ||
7171 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7172 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7173 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7174 cur_params.dot11MeshHWMProotInterval) ||
7175 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7176 cur_params.dot11MeshHWMPconfirmationInterval) ||
7177 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7178 cur_params.power_mode) ||
7179 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7180 cur_params.dot11MeshAwakeWindowDuration) ||
7181 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7182 cur_params.plink_timeout) ||
7183 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7184 cur_params.dot11MeshConnectedToMeshGate) ||
7185 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7186 cur_params.dot11MeshNolearn) ||
7187 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7188 cur_params.dot11MeshConnectedToAuthServer))
7189 goto nla_put_failure;
7190 nla_nest_end(msg, pinfoattr);
7191 genlmsg_end(msg, hdr);
7192 return genlmsg_reply(msg, info);
7193
7194 nla_put_failure:
7195 out:
7196 nlmsg_free(msg);
7197 return -ENOBUFS;
7198 }
7199
7200 static const struct nla_policy
7201 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7202 [NL80211_MESHCONF_RETRY_TIMEOUT] =
7203 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7204 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7205 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7206 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7207 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7208 [NL80211_MESHCONF_MAX_PEER_LINKS] =
7209 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7210 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7211 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7212 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7213 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7214 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7215 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7216 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7217 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7218 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7219 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7220 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7221 NLA_POLICY_MIN(NLA_U16, 1),
7222 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7223 NLA_POLICY_MIN(NLA_U16, 1),
7224 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7225 NLA_POLICY_MIN(NLA_U16, 1),
7226 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7227 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7228 NLA_POLICY_MIN(NLA_U16, 1),
7229 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7230 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7231 [NL80211_MESHCONF_RSSI_THRESHOLD] =
7232 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7233 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7234 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7235 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7236 NLA_POLICY_MIN(NLA_U16, 1),
7237 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7238 NLA_POLICY_MIN(NLA_U16, 1),
7239 [NL80211_MESHCONF_POWER_MODE] =
7240 NLA_POLICY_RANGE(NLA_U32,
7241 NL80211_MESH_POWER_ACTIVE,
7242 NL80211_MESH_POWER_MAX),
7243 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7244 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7245 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7246 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7247 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7248 };
7249
7250 static const struct nla_policy
7251 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7252 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7253 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7254 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7255 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7256 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7257 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7258 [NL80211_MESH_SETUP_IE] =
7259 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7260 IEEE80211_MAX_DATA_LEN),
7261 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7262 };
7263
nl80211_parse_mesh_config(struct genl_info * info,struct mesh_config * cfg,u32 * mask_out)7264 static int nl80211_parse_mesh_config(struct genl_info *info,
7265 struct mesh_config *cfg,
7266 u32 *mask_out)
7267 {
7268 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7269 u32 mask = 0;
7270 u16 ht_opmode;
7271
7272 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
7273 do { \
7274 if (tb[attr]) { \
7275 cfg->param = fn(tb[attr]); \
7276 mask |= BIT((attr) - 1); \
7277 } \
7278 } while (0)
7279
7280 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7281 return -EINVAL;
7282 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7283 return -EINVAL;
7284
7285 /* This makes sure that there aren't more than 32 mesh config
7286 * parameters (otherwise our bitfield scheme would not work.) */
7287 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7288
7289 /* Fill in the params struct */
7290 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7291 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7292 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7293 NL80211_MESHCONF_CONFIRM_TIMEOUT,
7294 nla_get_u16);
7295 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7296 NL80211_MESHCONF_HOLDING_TIMEOUT,
7297 nla_get_u16);
7298 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7299 NL80211_MESHCONF_MAX_PEER_LINKS,
7300 nla_get_u16);
7301 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7302 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7303 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7304 NL80211_MESHCONF_TTL, nla_get_u8);
7305 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7306 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7307 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7308 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7309 nla_get_u8);
7310 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7311 mask,
7312 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7313 nla_get_u32);
7314 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7315 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7316 nla_get_u8);
7317 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7318 NL80211_MESHCONF_PATH_REFRESH_TIME,
7319 nla_get_u32);
7320 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7321 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7322 return -EINVAL;
7323 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7324 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7325 nla_get_u16);
7326 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7327 mask,
7328 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7329 nla_get_u32);
7330 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7331 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7332 cfg->dot11MeshHWMPactivePathTimeout > 65535))
7333 return -EINVAL;
7334 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7335 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7336 nla_get_u16);
7337 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7338 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7339 nla_get_u16);
7340 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7341 dot11MeshHWMPnetDiameterTraversalTime, mask,
7342 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7343 nla_get_u16);
7344 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7345 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7346 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7347 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7348 nla_get_u16);
7349 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7350 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7351 nla_get_u8);
7352 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7353 NL80211_MESHCONF_FORWARDING, nla_get_u8);
7354 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7355 NL80211_MESHCONF_RSSI_THRESHOLD,
7356 nla_get_s32);
7357 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7358 NL80211_MESHCONF_CONNECTED_TO_GATE,
7359 nla_get_u8);
7360 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7361 NL80211_MESHCONF_CONNECTED_TO_AS,
7362 nla_get_u8);
7363 /*
7364 * Check HT operation mode based on
7365 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7366 */
7367 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7368 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7369
7370 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7371 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7372 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7373 return -EINVAL;
7374
7375 /* NON_HT_STA bit is reserved, but some programs set it */
7376 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7377
7378 cfg->ht_opmode = ht_opmode;
7379 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7380 }
7381 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7382 dot11MeshHWMPactivePathToRootTimeout, mask,
7383 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7384 nla_get_u32);
7385 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7386 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7387 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7388 return -EINVAL;
7389 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7390 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7391 nla_get_u16);
7392 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7393 mask,
7394 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7395 nla_get_u16);
7396 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7397 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7398 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7399 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7400 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7401 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7402 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7403 NL80211_MESHCONF_NOLEARN, nla_get_u8);
7404 if (mask_out)
7405 *mask_out = mask;
7406
7407 return 0;
7408
7409 #undef FILL_IN_MESH_PARAM_IF_SET
7410 }
7411
nl80211_parse_mesh_setup(struct genl_info * info,struct mesh_setup * setup)7412 static int nl80211_parse_mesh_setup(struct genl_info *info,
7413 struct mesh_setup *setup)
7414 {
7415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7416 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7417
7418 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7419 return -EINVAL;
7420 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7421 return -EINVAL;
7422
7423 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7424 setup->sync_method =
7425 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7426 IEEE80211_SYNC_METHOD_VENDOR :
7427 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7428
7429 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7430 setup->path_sel_proto =
7431 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7432 IEEE80211_PATH_PROTOCOL_VENDOR :
7433 IEEE80211_PATH_PROTOCOL_HWMP;
7434
7435 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7436 setup->path_metric =
7437 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7438 IEEE80211_PATH_METRIC_VENDOR :
7439 IEEE80211_PATH_METRIC_AIRTIME;
7440
7441 if (tb[NL80211_MESH_SETUP_IE]) {
7442 struct nlattr *ieattr =
7443 tb[NL80211_MESH_SETUP_IE];
7444 setup->ie = nla_data(ieattr);
7445 setup->ie_len = nla_len(ieattr);
7446 }
7447 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7448 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7449 return -EINVAL;
7450 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7451 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7452 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7453 if (setup->is_secure)
7454 setup->user_mpm = true;
7455
7456 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7457 if (!setup->user_mpm)
7458 return -EINVAL;
7459 setup->auth_id =
7460 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7461 }
7462
7463 return 0;
7464 }
7465
nl80211_update_mesh_config(struct sk_buff * skb,struct genl_info * info)7466 static int nl80211_update_mesh_config(struct sk_buff *skb,
7467 struct genl_info *info)
7468 {
7469 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7470 struct net_device *dev = info->user_ptr[1];
7471 struct wireless_dev *wdev = dev->ieee80211_ptr;
7472 struct mesh_config cfg = {};
7473 u32 mask;
7474 int err;
7475
7476 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7477 return -EOPNOTSUPP;
7478
7479 if (!rdev->ops->update_mesh_config)
7480 return -EOPNOTSUPP;
7481
7482 err = nl80211_parse_mesh_config(info, &cfg, &mask);
7483 if (err)
7484 return err;
7485
7486 wdev_lock(wdev);
7487 if (!wdev->mesh_id_len)
7488 err = -ENOLINK;
7489
7490 if (!err)
7491 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7492
7493 wdev_unlock(wdev);
7494
7495 return err;
7496 }
7497
nl80211_put_regdom(const struct ieee80211_regdomain * regdom,struct sk_buff * msg)7498 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7499 struct sk_buff *msg)
7500 {
7501 struct nlattr *nl_reg_rules;
7502 unsigned int i;
7503
7504 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7505 (regdom->dfs_region &&
7506 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7507 goto nla_put_failure;
7508
7509 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7510 if (!nl_reg_rules)
7511 goto nla_put_failure;
7512
7513 for (i = 0; i < regdom->n_reg_rules; i++) {
7514 struct nlattr *nl_reg_rule;
7515 const struct ieee80211_reg_rule *reg_rule;
7516 const struct ieee80211_freq_range *freq_range;
7517 const struct ieee80211_power_rule *power_rule;
7518 unsigned int max_bandwidth_khz;
7519
7520 reg_rule = ®dom->reg_rules[i];
7521 freq_range = ®_rule->freq_range;
7522 power_rule = ®_rule->power_rule;
7523
7524 nl_reg_rule = nla_nest_start_noflag(msg, i);
7525 if (!nl_reg_rule)
7526 goto nla_put_failure;
7527
7528 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7529 if (!max_bandwidth_khz)
7530 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7531 reg_rule);
7532
7533 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7534 reg_rule->flags) ||
7535 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7536 freq_range->start_freq_khz) ||
7537 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7538 freq_range->end_freq_khz) ||
7539 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7540 max_bandwidth_khz) ||
7541 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7542 power_rule->max_antenna_gain) ||
7543 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7544 power_rule->max_eirp) ||
7545 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7546 reg_rule->dfs_cac_ms))
7547 goto nla_put_failure;
7548
7549 nla_nest_end(msg, nl_reg_rule);
7550 }
7551
7552 nla_nest_end(msg, nl_reg_rules);
7553 return 0;
7554
7555 nla_put_failure:
7556 return -EMSGSIZE;
7557 }
7558
nl80211_get_reg_do(struct sk_buff * skb,struct genl_info * info)7559 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7560 {
7561 const struct ieee80211_regdomain *regdom = NULL;
7562 struct cfg80211_registered_device *rdev;
7563 struct wiphy *wiphy = NULL;
7564 struct sk_buff *msg;
7565 void *hdr;
7566
7567 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7568 if (!msg)
7569 return -ENOBUFS;
7570
7571 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7572 NL80211_CMD_GET_REG);
7573 if (!hdr)
7574 goto put_failure;
7575
7576 if (info->attrs[NL80211_ATTR_WIPHY]) {
7577 bool self_managed;
7578
7579 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7580 if (IS_ERR(rdev)) {
7581 nlmsg_free(msg);
7582 return PTR_ERR(rdev);
7583 }
7584
7585 wiphy = &rdev->wiphy;
7586 self_managed = wiphy->regulatory_flags &
7587 REGULATORY_WIPHY_SELF_MANAGED;
7588 regdom = get_wiphy_regdom(wiphy);
7589
7590 /* a self-managed-reg device must have a private regdom */
7591 if (WARN_ON(!regdom && self_managed)) {
7592 nlmsg_free(msg);
7593 return -EINVAL;
7594 }
7595
7596 if (regdom &&
7597 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7598 goto nla_put_failure;
7599 }
7600
7601 if (!wiphy && reg_last_request_cell_base() &&
7602 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7603 NL80211_USER_REG_HINT_CELL_BASE))
7604 goto nla_put_failure;
7605
7606 rcu_read_lock();
7607
7608 if (!regdom)
7609 regdom = rcu_dereference(cfg80211_regdomain);
7610
7611 if (nl80211_put_regdom(regdom, msg))
7612 goto nla_put_failure_rcu;
7613
7614 rcu_read_unlock();
7615
7616 genlmsg_end(msg, hdr);
7617 return genlmsg_reply(msg, info);
7618
7619 nla_put_failure_rcu:
7620 rcu_read_unlock();
7621 nla_put_failure:
7622 put_failure:
7623 nlmsg_free(msg);
7624 return -EMSGSIZE;
7625 }
7626
nl80211_send_regdom(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct wiphy * wiphy,const struct ieee80211_regdomain * regdom)7627 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7628 u32 seq, int flags, struct wiphy *wiphy,
7629 const struct ieee80211_regdomain *regdom)
7630 {
7631 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7632 NL80211_CMD_GET_REG);
7633
7634 if (!hdr)
7635 return -1;
7636
7637 genl_dump_check_consistent(cb, hdr);
7638
7639 if (nl80211_put_regdom(regdom, msg))
7640 goto nla_put_failure;
7641
7642 if (!wiphy && reg_last_request_cell_base() &&
7643 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7644 NL80211_USER_REG_HINT_CELL_BASE))
7645 goto nla_put_failure;
7646
7647 if (wiphy &&
7648 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7649 goto nla_put_failure;
7650
7651 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7652 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7653 goto nla_put_failure;
7654
7655 genlmsg_end(msg, hdr);
7656 return 0;
7657
7658 nla_put_failure:
7659 genlmsg_cancel(msg, hdr);
7660 return -EMSGSIZE;
7661 }
7662
nl80211_get_reg_dump(struct sk_buff * skb,struct netlink_callback * cb)7663 static int nl80211_get_reg_dump(struct sk_buff *skb,
7664 struct netlink_callback *cb)
7665 {
7666 const struct ieee80211_regdomain *regdom = NULL;
7667 struct cfg80211_registered_device *rdev;
7668 int err, reg_idx, start = cb->args[2];
7669
7670 rtnl_lock();
7671
7672 if (cfg80211_regdomain && start == 0) {
7673 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7674 NLM_F_MULTI, NULL,
7675 rtnl_dereference(cfg80211_regdomain));
7676 if (err < 0)
7677 goto out_err;
7678 }
7679
7680 /* the global regdom is idx 0 */
7681 reg_idx = 1;
7682 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7683 regdom = get_wiphy_regdom(&rdev->wiphy);
7684 if (!regdom)
7685 continue;
7686
7687 if (++reg_idx <= start)
7688 continue;
7689
7690 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7691 NLM_F_MULTI, &rdev->wiphy, regdom);
7692 if (err < 0) {
7693 reg_idx--;
7694 break;
7695 }
7696 }
7697
7698 cb->args[2] = reg_idx;
7699 err = skb->len;
7700 out_err:
7701 rtnl_unlock();
7702 return err;
7703 }
7704
7705 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7706 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7707 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
7708 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
7709 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
7710 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
7711 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
7712 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
7713 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
7714 };
7715
parse_reg_rule(struct nlattr * tb[],struct ieee80211_reg_rule * reg_rule)7716 static int parse_reg_rule(struct nlattr *tb[],
7717 struct ieee80211_reg_rule *reg_rule)
7718 {
7719 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
7720 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
7721
7722 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7723 return -EINVAL;
7724 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7725 return -EINVAL;
7726 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7727 return -EINVAL;
7728 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7729 return -EINVAL;
7730 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7731 return -EINVAL;
7732
7733 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7734
7735 freq_range->start_freq_khz =
7736 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7737 freq_range->end_freq_khz =
7738 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7739 freq_range->max_bandwidth_khz =
7740 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7741
7742 power_rule->max_eirp =
7743 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7744
7745 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7746 power_rule->max_antenna_gain =
7747 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7748
7749 if (tb[NL80211_ATTR_DFS_CAC_TIME])
7750 reg_rule->dfs_cac_ms =
7751 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7752
7753 return 0;
7754 }
7755
nl80211_set_reg(struct sk_buff * skb,struct genl_info * info)7756 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7757 {
7758 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7759 struct nlattr *nl_reg_rule;
7760 char *alpha2;
7761 int rem_reg_rules, r;
7762 u32 num_rules = 0, rule_idx = 0;
7763 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7764 struct ieee80211_regdomain *rd;
7765
7766 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7767 return -EINVAL;
7768
7769 if (!info->attrs[NL80211_ATTR_REG_RULES])
7770 return -EINVAL;
7771
7772 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7773
7774 if (info->attrs[NL80211_ATTR_DFS_REGION])
7775 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7776
7777 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7778 rem_reg_rules) {
7779 num_rules++;
7780 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7781 return -EINVAL;
7782 }
7783
7784 if (!reg_is_valid_request(alpha2))
7785 return -EINVAL;
7786
7787 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7788 if (!rd)
7789 return -ENOMEM;
7790
7791 rd->n_reg_rules = num_rules;
7792 rd->alpha2[0] = alpha2[0];
7793 rd->alpha2[1] = alpha2[1];
7794
7795 /*
7796 * Disable DFS master mode if the DFS region was
7797 * not supported or known on this kernel.
7798 */
7799 if (reg_supported_dfs_region(dfs_region))
7800 rd->dfs_region = dfs_region;
7801
7802 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7803 rem_reg_rules) {
7804 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7805 nl_reg_rule, reg_rule_policy,
7806 info->extack);
7807 if (r)
7808 goto bad_reg;
7809 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7810 if (r)
7811 goto bad_reg;
7812
7813 rule_idx++;
7814
7815 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7816 r = -EINVAL;
7817 goto bad_reg;
7818 }
7819 }
7820
7821 /* set_regdom takes ownership of rd */
7822 return set_regdom(rd, REGD_SOURCE_CRDA);
7823 bad_reg:
7824 kfree(rd);
7825 return r;
7826 }
7827 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7828
validate_scan_freqs(struct nlattr * freqs)7829 static int validate_scan_freqs(struct nlattr *freqs)
7830 {
7831 struct nlattr *attr1, *attr2;
7832 int n_channels = 0, tmp1, tmp2;
7833
7834 nla_for_each_nested(attr1, freqs, tmp1)
7835 if (nla_len(attr1) != sizeof(u32))
7836 return 0;
7837
7838 nla_for_each_nested(attr1, freqs, tmp1) {
7839 n_channels++;
7840 /*
7841 * Some hardware has a limited channel list for
7842 * scanning, and it is pretty much nonsensical
7843 * to scan for a channel twice, so disallow that
7844 * and don't require drivers to check that the
7845 * channel list they get isn't longer than what
7846 * they can scan, as long as they can scan all
7847 * the channels they registered at once.
7848 */
7849 nla_for_each_nested(attr2, freqs, tmp2)
7850 if (attr1 != attr2 &&
7851 nla_get_u32(attr1) == nla_get_u32(attr2))
7852 return 0;
7853 }
7854
7855 return n_channels;
7856 }
7857
is_band_valid(struct wiphy * wiphy,enum nl80211_band b)7858 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7859 {
7860 return b < NUM_NL80211_BANDS && wiphy->bands[b];
7861 }
7862
parse_bss_select(struct nlattr * nla,struct wiphy * wiphy,struct cfg80211_bss_selection * bss_select)7863 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7864 struct cfg80211_bss_selection *bss_select)
7865 {
7866 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7867 struct nlattr *nest;
7868 int err;
7869 bool found = false;
7870 int i;
7871
7872 /* only process one nested attribute */
7873 nest = nla_data(nla);
7874 if (!nla_ok(nest, nla_len(nest)))
7875 return -EINVAL;
7876
7877 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7878 nest, nl80211_bss_select_policy,
7879 NULL);
7880 if (err)
7881 return err;
7882
7883 /* only one attribute may be given */
7884 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7885 if (attr[i]) {
7886 if (found)
7887 return -EINVAL;
7888 found = true;
7889 }
7890 }
7891
7892 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7893
7894 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7895 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7896
7897 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7898 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7899 bss_select->param.band_pref =
7900 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7901 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7902 return -EINVAL;
7903 }
7904
7905 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7906 struct nl80211_bss_select_rssi_adjust *adj_param;
7907
7908 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7909 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7910 bss_select->param.adjust.band = adj_param->band;
7911 bss_select->param.adjust.delta = adj_param->delta;
7912 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7913 return -EINVAL;
7914 }
7915
7916 /* user-space did not provide behaviour attribute */
7917 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7918 return -EINVAL;
7919
7920 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7921 return -EINVAL;
7922
7923 return 0;
7924 }
7925
nl80211_parse_random_mac(struct nlattr ** attrs,u8 * mac_addr,u8 * mac_addr_mask)7926 int nl80211_parse_random_mac(struct nlattr **attrs,
7927 u8 *mac_addr, u8 *mac_addr_mask)
7928 {
7929 int i;
7930
7931 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7932 eth_zero_addr(mac_addr);
7933 eth_zero_addr(mac_addr_mask);
7934 mac_addr[0] = 0x2;
7935 mac_addr_mask[0] = 0x3;
7936
7937 return 0;
7938 }
7939
7940 /* need both or none */
7941 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7942 return -EINVAL;
7943
7944 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7945 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7946
7947 /* don't allow or configure an mcast address */
7948 if (!is_multicast_ether_addr(mac_addr_mask) ||
7949 is_multicast_ether_addr(mac_addr))
7950 return -EINVAL;
7951
7952 /*
7953 * allow users to pass a MAC address that has bits set outside
7954 * of the mask, but don't bother drivers with having to deal
7955 * with such bits
7956 */
7957 for (i = 0; i < ETH_ALEN; i++)
7958 mac_addr[i] &= mac_addr_mask[i];
7959
7960 return 0;
7961 }
7962
cfg80211_off_channel_oper_allowed(struct wireless_dev * wdev)7963 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7964 {
7965 ASSERT_WDEV_LOCK(wdev);
7966
7967 if (!cfg80211_beaconing_iface_active(wdev))
7968 return true;
7969
7970 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7971 return true;
7972
7973 return regulatory_pre_cac_allowed(wdev->wiphy);
7974 }
7975
nl80211_check_scan_feat(struct wiphy * wiphy,u32 flags,u32 flag,enum nl80211_ext_feature_index feat)7976 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7977 enum nl80211_ext_feature_index feat)
7978 {
7979 if (!(flags & flag))
7980 return true;
7981 if (wiphy_ext_feature_isset(wiphy, feat))
7982 return true;
7983 return false;
7984 }
7985
7986 static int
nl80211_check_scan_flags(struct wiphy * wiphy,struct wireless_dev * wdev,void * request,struct nlattr ** attrs,bool is_sched_scan)7987 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7988 void *request, struct nlattr **attrs,
7989 bool is_sched_scan)
7990 {
7991 u8 *mac_addr, *mac_addr_mask;
7992 u32 *flags;
7993 enum nl80211_feature_flags randomness_flag;
7994
7995 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7996 return 0;
7997
7998 if (is_sched_scan) {
7999 struct cfg80211_sched_scan_request *req = request;
8000
8001 randomness_flag = wdev ?
8002 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8003 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8004 flags = &req->flags;
8005 mac_addr = req->mac_addr;
8006 mac_addr_mask = req->mac_addr_mask;
8007 } else {
8008 struct cfg80211_scan_request *req = request;
8009
8010 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8011 flags = &req->flags;
8012 mac_addr = req->mac_addr;
8013 mac_addr_mask = req->mac_addr_mask;
8014 }
8015
8016 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8017
8018 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8019 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8020 !nl80211_check_scan_feat(wiphy, *flags,
8021 NL80211_SCAN_FLAG_LOW_SPAN,
8022 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8023 !nl80211_check_scan_feat(wiphy, *flags,
8024 NL80211_SCAN_FLAG_LOW_POWER,
8025 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8026 !nl80211_check_scan_feat(wiphy, *flags,
8027 NL80211_SCAN_FLAG_HIGH_ACCURACY,
8028 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8029 !nl80211_check_scan_feat(wiphy, *flags,
8030 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8031 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8032 !nl80211_check_scan_feat(wiphy, *flags,
8033 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8034 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8035 !nl80211_check_scan_feat(wiphy, *flags,
8036 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8037 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8038 !nl80211_check_scan_feat(wiphy, *flags,
8039 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8040 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8041 !nl80211_check_scan_feat(wiphy, *flags,
8042 NL80211_SCAN_FLAG_RANDOM_SN,
8043 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8044 !nl80211_check_scan_feat(wiphy, *flags,
8045 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8046 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8047 return -EOPNOTSUPP;
8048
8049 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8050 int err;
8051
8052 if (!(wiphy->features & randomness_flag) ||
8053 (wdev && wdev->current_bss))
8054 return -EOPNOTSUPP;
8055
8056 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8057 if (err)
8058 return err;
8059 }
8060
8061 return 0;
8062 }
8063
nl80211_trigger_scan(struct sk_buff * skb,struct genl_info * info)8064 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8065 {
8066 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8067 struct wireless_dev *wdev = info->user_ptr[1];
8068 struct cfg80211_scan_request *request;
8069 struct nlattr *scan_freqs = NULL;
8070 bool scan_freqs_khz = false;
8071 struct nlattr *attr;
8072 struct wiphy *wiphy;
8073 int err, tmp, n_ssids = 0, n_channels, i;
8074 size_t ie_len;
8075
8076 wiphy = &rdev->wiphy;
8077
8078 if (wdev->iftype == NL80211_IFTYPE_NAN)
8079 return -EOPNOTSUPP;
8080
8081 if (!rdev->ops->scan)
8082 return -EOPNOTSUPP;
8083
8084 if (rdev->scan_req || rdev->scan_msg)
8085 return -EBUSY;
8086
8087 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8088 if (!wiphy_ext_feature_isset(wiphy,
8089 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8090 return -EOPNOTSUPP;
8091 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8092 scan_freqs_khz = true;
8093 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8094 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8095
8096 if (scan_freqs) {
8097 n_channels = validate_scan_freqs(scan_freqs);
8098 if (!n_channels)
8099 return -EINVAL;
8100 } else {
8101 n_channels = ieee80211_get_num_supported_channels(wiphy);
8102 }
8103
8104 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8105 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8106 n_ssids++;
8107
8108 if (n_ssids > wiphy->max_scan_ssids)
8109 return -EINVAL;
8110
8111 if (info->attrs[NL80211_ATTR_IE])
8112 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8113 else
8114 ie_len = 0;
8115
8116 if (ie_len > wiphy->max_scan_ie_len)
8117 return -EINVAL;
8118
8119 request = kzalloc(sizeof(*request)
8120 + sizeof(*request->ssids) * n_ssids
8121 + sizeof(*request->channels) * n_channels
8122 + ie_len, GFP_KERNEL);
8123 if (!request)
8124 return -ENOMEM;
8125
8126 if (n_ssids)
8127 request->ssids = (void *)&request->channels[n_channels];
8128 request->n_ssids = n_ssids;
8129 if (ie_len) {
8130 if (n_ssids)
8131 request->ie = (void *)(request->ssids + n_ssids);
8132 else
8133 request->ie = (void *)(request->channels + n_channels);
8134 }
8135
8136 i = 0;
8137 if (scan_freqs) {
8138 /* user specified, bail out if channel not found */
8139 nla_for_each_nested(attr, scan_freqs, tmp) {
8140 struct ieee80211_channel *chan;
8141 int freq = nla_get_u32(attr);
8142
8143 if (!scan_freqs_khz)
8144 freq = MHZ_TO_KHZ(freq);
8145
8146 chan = ieee80211_get_channel_khz(wiphy, freq);
8147 if (!chan) {
8148 err = -EINVAL;
8149 goto out_free;
8150 }
8151
8152 /* ignore disabled channels */
8153 if (chan->flags & IEEE80211_CHAN_DISABLED)
8154 continue;
8155
8156 request->channels[i] = chan;
8157 i++;
8158 }
8159 } else {
8160 enum nl80211_band band;
8161
8162 /* all channels */
8163 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8164 int j;
8165
8166 if (!wiphy->bands[band])
8167 continue;
8168 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8169 struct ieee80211_channel *chan;
8170
8171 chan = &wiphy->bands[band]->channels[j];
8172
8173 if (chan->flags & IEEE80211_CHAN_DISABLED)
8174 continue;
8175
8176 request->channels[i] = chan;
8177 i++;
8178 }
8179 }
8180 }
8181
8182 if (!i) {
8183 err = -EINVAL;
8184 goto out_free;
8185 }
8186
8187 request->n_channels = i;
8188
8189 wdev_lock(wdev);
8190 if (!cfg80211_off_channel_oper_allowed(wdev)) {
8191 struct ieee80211_channel *chan;
8192
8193 if (request->n_channels != 1) {
8194 wdev_unlock(wdev);
8195 err = -EBUSY;
8196 goto out_free;
8197 }
8198
8199 chan = request->channels[0];
8200 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8201 wdev_unlock(wdev);
8202 err = -EBUSY;
8203 goto out_free;
8204 }
8205 }
8206 wdev_unlock(wdev);
8207
8208 i = 0;
8209 if (n_ssids) {
8210 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8211 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8212 err = -EINVAL;
8213 goto out_free;
8214 }
8215 request->ssids[i].ssid_len = nla_len(attr);
8216 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8217 i++;
8218 }
8219 }
8220
8221 if (info->attrs[NL80211_ATTR_IE]) {
8222 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8223 memcpy((void *)request->ie,
8224 nla_data(info->attrs[NL80211_ATTR_IE]),
8225 request->ie_len);
8226 }
8227
8228 for (i = 0; i < NUM_NL80211_BANDS; i++)
8229 if (wiphy->bands[i])
8230 request->rates[i] =
8231 (1 << wiphy->bands[i]->n_bitrates) - 1;
8232
8233 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8234 nla_for_each_nested(attr,
8235 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8236 tmp) {
8237 enum nl80211_band band = nla_type(attr);
8238
8239 if (band < 0 || band >= NUM_NL80211_BANDS) {
8240 err = -EINVAL;
8241 goto out_free;
8242 }
8243
8244 if (!wiphy->bands[band])
8245 continue;
8246
8247 err = ieee80211_get_ratemask(wiphy->bands[band],
8248 nla_data(attr),
8249 nla_len(attr),
8250 &request->rates[band]);
8251 if (err)
8252 goto out_free;
8253 }
8254 }
8255
8256 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8257 if (!wiphy_ext_feature_isset(wiphy,
8258 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
8259 err = -EOPNOTSUPP;
8260 goto out_free;
8261 }
8262
8263 request->duration =
8264 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8265 request->duration_mandatory =
8266 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8267 }
8268
8269 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8270 false);
8271 if (err)
8272 goto out_free;
8273
8274 request->no_cck =
8275 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8276
8277 /* Initial implementation used NL80211_ATTR_MAC to set the specific
8278 * BSSID to scan for. This was problematic because that same attribute
8279 * was already used for another purpose (local random MAC address). The
8280 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8281 * compatibility with older userspace components, also use the
8282 * NL80211_ATTR_MAC value here if it can be determined to be used for
8283 * the specific BSSID use case instead of the random MAC address
8284 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8285 */
8286 if (info->attrs[NL80211_ATTR_BSSID])
8287 memcpy(request->bssid,
8288 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8289 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8290 info->attrs[NL80211_ATTR_MAC])
8291 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8292 ETH_ALEN);
8293 else
8294 eth_broadcast_addr(request->bssid);
8295
8296 request->wdev = wdev;
8297 request->wiphy = &rdev->wiphy;
8298 request->scan_start = jiffies;
8299
8300 rdev->scan_req = request;
8301 err = cfg80211_scan(rdev);
8302
8303 if (err)
8304 goto out_free;
8305
8306 nl80211_send_scan_start(rdev, wdev);
8307 if (wdev->netdev)
8308 dev_hold(wdev->netdev);
8309
8310 return 0;
8311
8312 out_free:
8313 rdev->scan_req = NULL;
8314 kfree(request);
8315
8316 return err;
8317 }
8318
nl80211_abort_scan(struct sk_buff * skb,struct genl_info * info)8319 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8320 {
8321 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8322 struct wireless_dev *wdev = info->user_ptr[1];
8323
8324 if (!rdev->ops->abort_scan)
8325 return -EOPNOTSUPP;
8326
8327 if (rdev->scan_msg)
8328 return 0;
8329
8330 if (!rdev->scan_req)
8331 return -ENOENT;
8332
8333 rdev_abort_scan(rdev, wdev);
8334 return 0;
8335 }
8336
8337 static int
nl80211_parse_sched_scan_plans(struct wiphy * wiphy,int n_plans,struct cfg80211_sched_scan_request * request,struct nlattr ** attrs)8338 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8339 struct cfg80211_sched_scan_request *request,
8340 struct nlattr **attrs)
8341 {
8342 int tmp, err, i = 0;
8343 struct nlattr *attr;
8344
8345 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8346 u32 interval;
8347
8348 /*
8349 * If scan plans are not specified,
8350 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8351 * case one scan plan will be set with the specified scan
8352 * interval and infinite number of iterations.
8353 */
8354 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8355 if (!interval)
8356 return -EINVAL;
8357
8358 request->scan_plans[0].interval =
8359 DIV_ROUND_UP(interval, MSEC_PER_SEC);
8360 if (!request->scan_plans[0].interval)
8361 return -EINVAL;
8362
8363 if (request->scan_plans[0].interval >
8364 wiphy->max_sched_scan_plan_interval)
8365 request->scan_plans[0].interval =
8366 wiphy->max_sched_scan_plan_interval;
8367
8368 return 0;
8369 }
8370
8371 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8372 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8373
8374 if (WARN_ON(i >= n_plans))
8375 return -EINVAL;
8376
8377 err = nla_parse_nested_deprecated(plan,
8378 NL80211_SCHED_SCAN_PLAN_MAX,
8379 attr, nl80211_plan_policy,
8380 NULL);
8381 if (err)
8382 return err;
8383
8384 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8385 return -EINVAL;
8386
8387 request->scan_plans[i].interval =
8388 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8389 if (!request->scan_plans[i].interval ||
8390 request->scan_plans[i].interval >
8391 wiphy->max_sched_scan_plan_interval)
8392 return -EINVAL;
8393
8394 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8395 request->scan_plans[i].iterations =
8396 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8397 if (!request->scan_plans[i].iterations ||
8398 (request->scan_plans[i].iterations >
8399 wiphy->max_sched_scan_plan_iterations))
8400 return -EINVAL;
8401 } else if (i < n_plans - 1) {
8402 /*
8403 * All scan plans but the last one must specify
8404 * a finite number of iterations
8405 */
8406 return -EINVAL;
8407 }
8408
8409 i++;
8410 }
8411
8412 /*
8413 * The last scan plan must not specify the number of
8414 * iterations, it is supposed to run infinitely
8415 */
8416 if (request->scan_plans[n_plans - 1].iterations)
8417 return -EINVAL;
8418
8419 return 0;
8420 }
8421
8422 static int
nl80211_parse_sched_scan_per_band_rssi(struct wiphy * wiphy,struct cfg80211_match_set * match_sets,struct nlattr * tb_band_rssi,s32 rssi_thold)8423 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8424 struct cfg80211_match_set *match_sets,
8425 struct nlattr *tb_band_rssi,
8426 s32 rssi_thold)
8427 {
8428 struct nlattr *attr;
8429 int i, tmp, ret = 0;
8430
8431 if (!wiphy_ext_feature_isset(wiphy,
8432 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8433 if (tb_band_rssi)
8434 ret = -EOPNOTSUPP;
8435 else
8436 for (i = 0; i < NUM_NL80211_BANDS; i++)
8437 match_sets->per_band_rssi_thold[i] =
8438 NL80211_SCAN_RSSI_THOLD_OFF;
8439 return ret;
8440 }
8441
8442 for (i = 0; i < NUM_NL80211_BANDS; i++)
8443 match_sets->per_band_rssi_thold[i] = rssi_thold;
8444
8445 nla_for_each_nested(attr, tb_band_rssi, tmp) {
8446 enum nl80211_band band = nla_type(attr);
8447
8448 if (band < 0 || band >= NUM_NL80211_BANDS)
8449 return -EINVAL;
8450
8451 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8452 }
8453
8454 return 0;
8455 }
8456
8457 static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy * wiphy,struct wireless_dev * wdev,struct nlattr ** attrs,int max_match_sets)8458 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8459 struct nlattr **attrs, int max_match_sets)
8460 {
8461 struct cfg80211_sched_scan_request *request;
8462 struct nlattr *attr;
8463 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8464 enum nl80211_band band;
8465 size_t ie_len;
8466 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8467 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8468
8469 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8470 n_channels = validate_scan_freqs(
8471 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8472 if (!n_channels)
8473 return ERR_PTR(-EINVAL);
8474 } else {
8475 n_channels = ieee80211_get_num_supported_channels(wiphy);
8476 }
8477
8478 if (attrs[NL80211_ATTR_SCAN_SSIDS])
8479 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8480 tmp)
8481 n_ssids++;
8482
8483 if (n_ssids > wiphy->max_sched_scan_ssids)
8484 return ERR_PTR(-EINVAL);
8485
8486 /*
8487 * First, count the number of 'real' matchsets. Due to an issue with
8488 * the old implementation, matchsets containing only the RSSI attribute
8489 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8490 * RSSI for all matchsets, rather than their own matchset for reporting
8491 * all APs with a strong RSSI. This is needed to be compatible with
8492 * older userspace that treated a matchset with only the RSSI as the
8493 * global RSSI for all other matchsets - if there are other matchsets.
8494 */
8495 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8496 nla_for_each_nested(attr,
8497 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8498 tmp) {
8499 struct nlattr *rssi;
8500
8501 err = nla_parse_nested_deprecated(tb,
8502 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8503 attr,
8504 nl80211_match_policy,
8505 NULL);
8506 if (err)
8507 return ERR_PTR(err);
8508
8509 /* SSID and BSSID are mutually exclusive */
8510 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8511 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8512 return ERR_PTR(-EINVAL);
8513
8514 /* add other standalone attributes here */
8515 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8516 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8517 n_match_sets++;
8518 continue;
8519 }
8520 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8521 if (rssi)
8522 default_match_rssi = nla_get_s32(rssi);
8523 }
8524 }
8525
8526 /* However, if there's no other matchset, add the RSSI one */
8527 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8528 n_match_sets = 1;
8529
8530 if (n_match_sets > max_match_sets)
8531 return ERR_PTR(-EINVAL);
8532
8533 if (attrs[NL80211_ATTR_IE])
8534 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8535 else
8536 ie_len = 0;
8537
8538 if (ie_len > wiphy->max_sched_scan_ie_len)
8539 return ERR_PTR(-EINVAL);
8540
8541 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8542 /*
8543 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8544 * each scan plan already specifies its own interval
8545 */
8546 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8547 return ERR_PTR(-EINVAL);
8548
8549 nla_for_each_nested(attr,
8550 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8551 n_plans++;
8552 } else {
8553 /*
8554 * The scan interval attribute is kept for backward
8555 * compatibility. If no scan plans are specified and sched scan
8556 * interval is specified, one scan plan will be set with this
8557 * scan interval and infinite number of iterations.
8558 */
8559 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8560 return ERR_PTR(-EINVAL);
8561
8562 n_plans = 1;
8563 }
8564
8565 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8566 return ERR_PTR(-EINVAL);
8567
8568 if (!wiphy_ext_feature_isset(
8569 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8570 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8571 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8572 return ERR_PTR(-EINVAL);
8573
8574 request = kzalloc(sizeof(*request)
8575 + sizeof(*request->ssids) * n_ssids
8576 + sizeof(*request->match_sets) * n_match_sets
8577 + sizeof(*request->scan_plans) * n_plans
8578 + sizeof(*request->channels) * n_channels
8579 + ie_len, GFP_KERNEL);
8580 if (!request)
8581 return ERR_PTR(-ENOMEM);
8582
8583 if (n_ssids)
8584 request->ssids = (void *)&request->channels[n_channels];
8585 request->n_ssids = n_ssids;
8586 if (ie_len) {
8587 if (n_ssids)
8588 request->ie = (void *)(request->ssids + n_ssids);
8589 else
8590 request->ie = (void *)(request->channels + n_channels);
8591 }
8592
8593 if (n_match_sets) {
8594 if (request->ie)
8595 request->match_sets = (void *)(request->ie + ie_len);
8596 else if (n_ssids)
8597 request->match_sets =
8598 (void *)(request->ssids + n_ssids);
8599 else
8600 request->match_sets =
8601 (void *)(request->channels + n_channels);
8602 }
8603 request->n_match_sets = n_match_sets;
8604
8605 if (n_match_sets)
8606 request->scan_plans = (void *)(request->match_sets +
8607 n_match_sets);
8608 else if (request->ie)
8609 request->scan_plans = (void *)(request->ie + ie_len);
8610 else if (n_ssids)
8611 request->scan_plans = (void *)(request->ssids + n_ssids);
8612 else
8613 request->scan_plans = (void *)(request->channels + n_channels);
8614
8615 request->n_scan_plans = n_plans;
8616
8617 i = 0;
8618 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8619 /* user specified, bail out if channel not found */
8620 nla_for_each_nested(attr,
8621 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8622 tmp) {
8623 struct ieee80211_channel *chan;
8624
8625 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8626
8627 if (!chan) {
8628 err = -EINVAL;
8629 goto out_free;
8630 }
8631
8632 /* ignore disabled channels */
8633 if (chan->flags & IEEE80211_CHAN_DISABLED)
8634 continue;
8635
8636 request->channels[i] = chan;
8637 i++;
8638 }
8639 } else {
8640 /* all channels */
8641 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8642 int j;
8643
8644 if (!wiphy->bands[band])
8645 continue;
8646 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8647 struct ieee80211_channel *chan;
8648
8649 chan = &wiphy->bands[band]->channels[j];
8650
8651 if (chan->flags & IEEE80211_CHAN_DISABLED)
8652 continue;
8653
8654 request->channels[i] = chan;
8655 i++;
8656 }
8657 }
8658 }
8659
8660 if (!i) {
8661 err = -EINVAL;
8662 goto out_free;
8663 }
8664
8665 request->n_channels = i;
8666
8667 i = 0;
8668 if (n_ssids) {
8669 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8670 tmp) {
8671 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8672 err = -EINVAL;
8673 goto out_free;
8674 }
8675 request->ssids[i].ssid_len = nla_len(attr);
8676 memcpy(request->ssids[i].ssid, nla_data(attr),
8677 nla_len(attr));
8678 i++;
8679 }
8680 }
8681
8682 i = 0;
8683 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8684 nla_for_each_nested(attr,
8685 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8686 tmp) {
8687 struct nlattr *ssid, *bssid, *rssi;
8688
8689 err = nla_parse_nested_deprecated(tb,
8690 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8691 attr,
8692 nl80211_match_policy,
8693 NULL);
8694 if (err)
8695 goto out_free;
8696 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8697 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8698
8699 if (!ssid && !bssid) {
8700 i++;
8701 continue;
8702 }
8703
8704 if (WARN_ON(i >= n_match_sets)) {
8705 /* this indicates a programming error,
8706 * the loop above should have verified
8707 * things properly
8708 */
8709 err = -EINVAL;
8710 goto out_free;
8711 }
8712
8713 if (ssid) {
8714 memcpy(request->match_sets[i].ssid.ssid,
8715 nla_data(ssid), nla_len(ssid));
8716 request->match_sets[i].ssid.ssid_len =
8717 nla_len(ssid);
8718 }
8719 if (bssid)
8720 memcpy(request->match_sets[i].bssid,
8721 nla_data(bssid), ETH_ALEN);
8722
8723 /* special attribute - old implementation w/a */
8724 request->match_sets[i].rssi_thold = default_match_rssi;
8725 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8726 if (rssi)
8727 request->match_sets[i].rssi_thold =
8728 nla_get_s32(rssi);
8729
8730 /* Parse per band RSSI attribute */
8731 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8732 &request->match_sets[i],
8733 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8734 request->match_sets[i].rssi_thold);
8735 if (err)
8736 goto out_free;
8737
8738 i++;
8739 }
8740
8741 /* there was no other matchset, so the RSSI one is alone */
8742 if (i == 0 && n_match_sets)
8743 request->match_sets[0].rssi_thold = default_match_rssi;
8744
8745 request->min_rssi_thold = INT_MAX;
8746 for (i = 0; i < n_match_sets; i++)
8747 request->min_rssi_thold =
8748 min(request->match_sets[i].rssi_thold,
8749 request->min_rssi_thold);
8750 } else {
8751 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8752 }
8753
8754 if (ie_len) {
8755 request->ie_len = ie_len;
8756 memcpy((void *)request->ie,
8757 nla_data(attrs[NL80211_ATTR_IE]),
8758 request->ie_len);
8759 }
8760
8761 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8762 if (err)
8763 goto out_free;
8764
8765 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8766 request->delay =
8767 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8768
8769 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8770 request->relative_rssi = nla_get_s8(
8771 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8772 request->relative_rssi_set = true;
8773 }
8774
8775 if (request->relative_rssi_set &&
8776 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8777 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8778
8779 rssi_adjust = nla_data(
8780 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8781 request->rssi_adjust.band = rssi_adjust->band;
8782 request->rssi_adjust.delta = rssi_adjust->delta;
8783 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8784 err = -EINVAL;
8785 goto out_free;
8786 }
8787 }
8788
8789 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8790 if (err)
8791 goto out_free;
8792
8793 request->scan_start = jiffies;
8794
8795 return request;
8796
8797 out_free:
8798 kfree(request);
8799 return ERR_PTR(err);
8800 }
8801
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)8802 static int nl80211_start_sched_scan(struct sk_buff *skb,
8803 struct genl_info *info)
8804 {
8805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8806 struct net_device *dev = info->user_ptr[1];
8807 struct wireless_dev *wdev = dev->ieee80211_ptr;
8808 struct cfg80211_sched_scan_request *sched_scan_req;
8809 bool want_multi;
8810 int err;
8811
8812 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8813 return -EOPNOTSUPP;
8814
8815 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8816 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8817 if (err)
8818 return err;
8819
8820 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8821 info->attrs,
8822 rdev->wiphy.max_match_sets);
8823
8824 err = PTR_ERR_OR_ZERO(sched_scan_req);
8825 if (err)
8826 goto out_err;
8827
8828 /* leave request id zero for legacy request
8829 * or if driver does not support multi-scheduled scan
8830 */
8831 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8832 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8833
8834 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8835 if (err)
8836 goto out_free;
8837
8838 sched_scan_req->dev = dev;
8839 sched_scan_req->wiphy = &rdev->wiphy;
8840
8841 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8842 sched_scan_req->owner_nlportid = info->snd_portid;
8843
8844 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8845
8846 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8847 return 0;
8848
8849 out_free:
8850 kfree(sched_scan_req);
8851 out_err:
8852 return err;
8853 }
8854
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)8855 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8856 struct genl_info *info)
8857 {
8858 struct cfg80211_sched_scan_request *req;
8859 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8860 u64 cookie;
8861
8862 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8863 return -EOPNOTSUPP;
8864
8865 if (info->attrs[NL80211_ATTR_COOKIE]) {
8866 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8867 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8868 }
8869
8870 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8871 struct cfg80211_sched_scan_request,
8872 list);
8873 if (!req || req->reqid ||
8874 (req->owner_nlportid &&
8875 req->owner_nlportid != info->snd_portid))
8876 return -ENOENT;
8877
8878 return cfg80211_stop_sched_scan_req(rdev, req, false);
8879 }
8880
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)8881 static int nl80211_start_radar_detection(struct sk_buff *skb,
8882 struct genl_info *info)
8883 {
8884 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8885 struct net_device *dev = info->user_ptr[1];
8886 struct wireless_dev *wdev = dev->ieee80211_ptr;
8887 struct wiphy *wiphy = wdev->wiphy;
8888 struct cfg80211_chan_def chandef;
8889 enum nl80211_dfs_regions dfs_region;
8890 unsigned int cac_time_ms;
8891 int err;
8892
8893 dfs_region = reg_get_dfs_region(wiphy);
8894 if (dfs_region == NL80211_DFS_UNSET)
8895 return -EINVAL;
8896
8897 err = nl80211_parse_chandef(rdev, info, &chandef);
8898 if (err)
8899 return err;
8900
8901 if (netif_carrier_ok(dev))
8902 return -EBUSY;
8903
8904 if (wdev->cac_started)
8905 return -EBUSY;
8906
8907 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8908 if (err < 0)
8909 return err;
8910
8911 if (err == 0)
8912 return -EINVAL;
8913
8914 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8915 return -EINVAL;
8916
8917 /* CAC start is offloaded to HW and can't be started manually */
8918 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8919 return -EOPNOTSUPP;
8920
8921 if (!rdev->ops->start_radar_detection)
8922 return -EOPNOTSUPP;
8923
8924 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8925 if (WARN_ON(!cac_time_ms))
8926 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8927
8928 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8929 if (!err) {
8930 wdev->chandef = chandef;
8931 wdev->cac_started = true;
8932 wdev->cac_start_time = jiffies;
8933 wdev->cac_time_ms = cac_time_ms;
8934 }
8935 return err;
8936 }
8937
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)8938 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8939 struct genl_info *info)
8940 {
8941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8942 struct net_device *dev = info->user_ptr[1];
8943 struct wireless_dev *wdev = dev->ieee80211_ptr;
8944 struct wiphy *wiphy = wdev->wiphy;
8945 struct cfg80211_chan_def chandef;
8946 enum nl80211_dfs_regions dfs_region;
8947 int err;
8948
8949 dfs_region = reg_get_dfs_region(wiphy);
8950 if (dfs_region == NL80211_DFS_UNSET) {
8951 GENL_SET_ERR_MSG(info,
8952 "DFS Region is not set. Unexpected Radar indication");
8953 return -EINVAL;
8954 }
8955
8956 err = nl80211_parse_chandef(rdev, info, &chandef);
8957 if (err) {
8958 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8959 return err;
8960 }
8961
8962 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8963 if (err < 0) {
8964 GENL_SET_ERR_MSG(info, "chandef is invalid");
8965 return err;
8966 }
8967
8968 if (err == 0) {
8969 GENL_SET_ERR_MSG(info,
8970 "Unexpected Radar indication for chandef/iftype");
8971 return -EINVAL;
8972 }
8973
8974 /* Do not process this notification if radar is already detected
8975 * by kernel on this channel, and return success.
8976 */
8977 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8978 return 0;
8979
8980 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8981
8982 cfg80211_sched_dfs_chan_update(rdev);
8983
8984 rdev->radar_chandef = chandef;
8985
8986 /* Propagate this notification to other radios as well */
8987 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8988
8989 return 0;
8990 }
8991
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)8992 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8993 {
8994 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8995 struct net_device *dev = info->user_ptr[1];
8996 struct wireless_dev *wdev = dev->ieee80211_ptr;
8997 struct cfg80211_csa_settings params;
8998 /* csa_attrs is defined static to avoid waste of stack size - this
8999 * function is called under RTNL lock, so this should not be a problem.
9000 */
9001 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
9002 int err;
9003 bool need_new_beacon = false;
9004 bool need_handle_dfs_flag = true;
9005 int len, i;
9006 u32 cs_count;
9007
9008 if (!rdev->ops->channel_switch ||
9009 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9010 return -EOPNOTSUPP;
9011
9012 switch (dev->ieee80211_ptr->iftype) {
9013 case NL80211_IFTYPE_AP:
9014 case NL80211_IFTYPE_P2P_GO:
9015 need_new_beacon = true;
9016 /* For all modes except AP the handle_dfs flag needs to be
9017 * supplied to tell the kernel that userspace will handle radar
9018 * events when they happen. Otherwise a switch to a channel
9019 * requiring DFS will be rejected.
9020 */
9021 need_handle_dfs_flag = false;
9022
9023 /* useless if AP is not running */
9024 if (!wdev->beacon_interval)
9025 return -ENOTCONN;
9026 break;
9027 case NL80211_IFTYPE_ADHOC:
9028 if (!wdev->ssid_len)
9029 return -ENOTCONN;
9030 break;
9031 case NL80211_IFTYPE_MESH_POINT:
9032 if (!wdev->mesh_id_len)
9033 return -ENOTCONN;
9034 break;
9035 default:
9036 return -EOPNOTSUPP;
9037 }
9038
9039 memset(¶ms, 0, sizeof(params));
9040 params.beacon_csa.ftm_responder = -1;
9041
9042 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9043 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9044 return -EINVAL;
9045
9046 /* only important for AP, IBSS and mesh create IEs internally */
9047 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9048 return -EINVAL;
9049
9050 /* Even though the attribute is u32, the specification says
9051 * u8, so let's make sure we don't overflow.
9052 */
9053 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9054 if (cs_count > 255)
9055 return -EINVAL;
9056
9057 params.count = cs_count;
9058
9059 if (!need_new_beacon)
9060 goto skip_beacons;
9061
9062 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after);
9063 if (err)
9064 return err;
9065
9066 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9067 info->attrs[NL80211_ATTR_CSA_IES],
9068 nl80211_policy, info->extack);
9069 if (err)
9070 return err;
9071
9072 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa);
9073 if (err)
9074 return err;
9075
9076 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9077 return -EINVAL;
9078
9079 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9080 if (!len || (len % sizeof(u16)))
9081 return -EINVAL;
9082
9083 params.n_counter_offsets_beacon = len / sizeof(u16);
9084 if (rdev->wiphy.max_num_csa_counters &&
9085 (params.n_counter_offsets_beacon >
9086 rdev->wiphy.max_num_csa_counters))
9087 return -EINVAL;
9088
9089 params.counter_offsets_beacon =
9090 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9091
9092 /* sanity checks - counters should fit and be the same */
9093 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9094 u16 offset = params.counter_offsets_beacon[i];
9095
9096 if (offset >= params.beacon_csa.tail_len)
9097 return -EINVAL;
9098
9099 if (params.beacon_csa.tail[offset] != params.count)
9100 return -EINVAL;
9101 }
9102
9103 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9104 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9105 if (!len || (len % sizeof(u16)))
9106 return -EINVAL;
9107
9108 params.n_counter_offsets_presp = len / sizeof(u16);
9109 if (rdev->wiphy.max_num_csa_counters &&
9110 (params.n_counter_offsets_presp >
9111 rdev->wiphy.max_num_csa_counters))
9112 return -EINVAL;
9113
9114 params.counter_offsets_presp =
9115 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9116
9117 /* sanity checks - counters should fit and be the same */
9118 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9119 u16 offset = params.counter_offsets_presp[i];
9120
9121 if (offset >= params.beacon_csa.probe_resp_len)
9122 return -EINVAL;
9123
9124 if (params.beacon_csa.probe_resp[offset] !=
9125 params.count)
9126 return -EINVAL;
9127 }
9128 }
9129
9130 skip_beacons:
9131 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
9132 if (err)
9133 return err;
9134
9135 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
9136 wdev->iftype))
9137 return -EINVAL;
9138
9139 err = cfg80211_chandef_dfs_required(wdev->wiphy,
9140 ¶ms.chandef,
9141 wdev->iftype);
9142 if (err < 0)
9143 return err;
9144
9145 if (err > 0) {
9146 params.radar_required = true;
9147 if (need_handle_dfs_flag &&
9148 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9149 return -EINVAL;
9150 }
9151 }
9152
9153 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9154 params.block_tx = true;
9155
9156 wdev_lock(wdev);
9157 err = rdev_channel_switch(rdev, dev, ¶ms);
9158 wdev_unlock(wdev);
9159
9160 return err;
9161 }
9162
nl80211_send_bss(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,struct cfg80211_internal_bss * intbss)9163 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9164 u32 seq, int flags,
9165 struct cfg80211_registered_device *rdev,
9166 struct wireless_dev *wdev,
9167 struct cfg80211_internal_bss *intbss)
9168 {
9169 struct cfg80211_bss *res = &intbss->pub;
9170 const struct cfg80211_bss_ies *ies;
9171 void *hdr;
9172 struct nlattr *bss;
9173
9174 ASSERT_WDEV_LOCK(wdev);
9175
9176 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9177 NL80211_CMD_NEW_SCAN_RESULTS);
9178 if (!hdr)
9179 return -1;
9180
9181 genl_dump_check_consistent(cb, hdr);
9182
9183 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9184 goto nla_put_failure;
9185 if (wdev->netdev &&
9186 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9187 goto nla_put_failure;
9188 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9189 NL80211_ATTR_PAD))
9190 goto nla_put_failure;
9191
9192 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9193 if (!bss)
9194 goto nla_put_failure;
9195 if ((!is_zero_ether_addr(res->bssid) &&
9196 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9197 goto nla_put_failure;
9198
9199 rcu_read_lock();
9200 /* indicate whether we have probe response data or not */
9201 if (rcu_access_pointer(res->proberesp_ies) &&
9202 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9203 goto fail_unlock_rcu;
9204
9205 /* this pointer prefers to be pointed to probe response data
9206 * but is always valid
9207 */
9208 ies = rcu_dereference(res->ies);
9209 if (ies) {
9210 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9211 NL80211_BSS_PAD))
9212 goto fail_unlock_rcu;
9213 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9214 ies->len, ies->data))
9215 goto fail_unlock_rcu;
9216 }
9217
9218 /* and this pointer is always (unless driver didn't know) beacon data */
9219 ies = rcu_dereference(res->beacon_ies);
9220 if (ies && ies->from_beacon) {
9221 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9222 NL80211_BSS_PAD))
9223 goto fail_unlock_rcu;
9224 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9225 ies->len, ies->data))
9226 goto fail_unlock_rcu;
9227 }
9228 rcu_read_unlock();
9229
9230 if (res->beacon_interval &&
9231 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9232 goto nla_put_failure;
9233 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9234 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9235 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9236 res->channel->freq_offset) ||
9237 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9238 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9239 jiffies_to_msecs(jiffies - intbss->ts)))
9240 goto nla_put_failure;
9241
9242 if (intbss->parent_tsf &&
9243 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9244 intbss->parent_tsf, NL80211_BSS_PAD) ||
9245 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9246 intbss->parent_bssid)))
9247 goto nla_put_failure;
9248
9249 if (intbss->ts_boottime &&
9250 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9251 intbss->ts_boottime, NL80211_BSS_PAD))
9252 goto nla_put_failure;
9253
9254 if (!nl80211_put_signal(msg, intbss->pub.chains,
9255 intbss->pub.chain_signal,
9256 NL80211_BSS_CHAIN_SIGNAL))
9257 goto nla_put_failure;
9258
9259 switch (rdev->wiphy.signal_type) {
9260 case CFG80211_SIGNAL_TYPE_MBM:
9261 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9262 goto nla_put_failure;
9263 break;
9264 case CFG80211_SIGNAL_TYPE_UNSPEC:
9265 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9266 goto nla_put_failure;
9267 break;
9268 default:
9269 break;
9270 }
9271
9272 switch (wdev->iftype) {
9273 case NL80211_IFTYPE_P2P_CLIENT:
9274 case NL80211_IFTYPE_STATION:
9275 if (intbss == wdev->current_bss &&
9276 nla_put_u32(msg, NL80211_BSS_STATUS,
9277 NL80211_BSS_STATUS_ASSOCIATED))
9278 goto nla_put_failure;
9279 break;
9280 case NL80211_IFTYPE_ADHOC:
9281 if (intbss == wdev->current_bss &&
9282 nla_put_u32(msg, NL80211_BSS_STATUS,
9283 NL80211_BSS_STATUS_IBSS_JOINED))
9284 goto nla_put_failure;
9285 break;
9286 default:
9287 break;
9288 }
9289
9290 nla_nest_end(msg, bss);
9291
9292 genlmsg_end(msg, hdr);
9293 return 0;
9294
9295 fail_unlock_rcu:
9296 rcu_read_unlock();
9297 nla_put_failure:
9298 genlmsg_cancel(msg, hdr);
9299 return -EMSGSIZE;
9300 }
9301
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)9302 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9303 {
9304 struct cfg80211_registered_device *rdev;
9305 struct cfg80211_internal_bss *scan;
9306 struct wireless_dev *wdev;
9307 int start = cb->args[2], idx = 0;
9308 int err;
9309
9310 rtnl_lock();
9311 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9312 if (err) {
9313 rtnl_unlock();
9314 return err;
9315 }
9316
9317 wdev_lock(wdev);
9318 spin_lock_bh(&rdev->bss_lock);
9319
9320 /*
9321 * dump_scan will be called multiple times to break up the scan results
9322 * into multiple messages. It is unlikely that any more bss-es will be
9323 * expired after the first call, so only call only call this on the
9324 * first dump_scan invocation.
9325 */
9326 if (start == 0)
9327 cfg80211_bss_expire(rdev);
9328
9329 cb->seq = rdev->bss_generation;
9330
9331 list_for_each_entry(scan, &rdev->bss_list, list) {
9332 if (++idx <= start)
9333 continue;
9334 if (nl80211_send_bss(skb, cb,
9335 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9336 rdev, wdev, scan) < 0) {
9337 idx--;
9338 break;
9339 }
9340 }
9341
9342 spin_unlock_bh(&rdev->bss_lock);
9343 wdev_unlock(wdev);
9344
9345 cb->args[2] = idx;
9346 rtnl_unlock();
9347
9348 return skb->len;
9349 }
9350
nl80211_send_survey(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,bool allow_radio_stats,struct survey_info * survey)9351 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9352 int flags, struct net_device *dev,
9353 bool allow_radio_stats,
9354 struct survey_info *survey)
9355 {
9356 void *hdr;
9357 struct nlattr *infoattr;
9358
9359 /* skip radio stats if userspace didn't request them */
9360 if (!survey->channel && !allow_radio_stats)
9361 return 0;
9362
9363 hdr = nl80211hdr_put(msg, portid, seq, flags,
9364 NL80211_CMD_NEW_SURVEY_RESULTS);
9365 if (!hdr)
9366 return -ENOMEM;
9367
9368 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9369 goto nla_put_failure;
9370
9371 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9372 if (!infoattr)
9373 goto nla_put_failure;
9374
9375 if (survey->channel &&
9376 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9377 survey->channel->center_freq))
9378 goto nla_put_failure;
9379
9380 if (survey->channel && survey->channel->freq_offset &&
9381 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9382 survey->channel->freq_offset))
9383 goto nla_put_failure;
9384
9385 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9386 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9387 goto nla_put_failure;
9388 if ((survey->filled & SURVEY_INFO_IN_USE) &&
9389 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9390 goto nla_put_failure;
9391 if ((survey->filled & SURVEY_INFO_TIME) &&
9392 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9393 survey->time, NL80211_SURVEY_INFO_PAD))
9394 goto nla_put_failure;
9395 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9396 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9397 survey->time_busy, NL80211_SURVEY_INFO_PAD))
9398 goto nla_put_failure;
9399 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9400 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9401 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9402 goto nla_put_failure;
9403 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9404 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9405 survey->time_rx, NL80211_SURVEY_INFO_PAD))
9406 goto nla_put_failure;
9407 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9408 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9409 survey->time_tx, NL80211_SURVEY_INFO_PAD))
9410 goto nla_put_failure;
9411 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9412 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9413 survey->time_scan, NL80211_SURVEY_INFO_PAD))
9414 goto nla_put_failure;
9415 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9416 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9417 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9418 goto nla_put_failure;
9419
9420 nla_nest_end(msg, infoattr);
9421
9422 genlmsg_end(msg, hdr);
9423 return 0;
9424
9425 nla_put_failure:
9426 genlmsg_cancel(msg, hdr);
9427 return -EMSGSIZE;
9428 }
9429
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)9430 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9431 {
9432 struct nlattr **attrbuf;
9433 struct survey_info survey;
9434 struct cfg80211_registered_device *rdev;
9435 struct wireless_dev *wdev;
9436 int survey_idx = cb->args[2];
9437 int res;
9438 bool radio_stats;
9439
9440 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9441 if (!attrbuf)
9442 return -ENOMEM;
9443
9444 rtnl_lock();
9445 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9446 if (res)
9447 goto out_err;
9448
9449 /* prepare_wdev_dump parsed the attributes */
9450 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9451
9452 if (!wdev->netdev) {
9453 res = -EINVAL;
9454 goto out_err;
9455 }
9456
9457 if (!rdev->ops->dump_survey) {
9458 res = -EOPNOTSUPP;
9459 goto out_err;
9460 }
9461
9462 while (1) {
9463 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9464 if (res == -ENOENT)
9465 break;
9466 if (res)
9467 goto out_err;
9468
9469 /* don't send disabled channels, but do send non-channel data */
9470 if (survey.channel &&
9471 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9472 survey_idx++;
9473 continue;
9474 }
9475
9476 if (nl80211_send_survey(skb,
9477 NETLINK_CB(cb->skb).portid,
9478 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9479 wdev->netdev, radio_stats, &survey) < 0)
9480 goto out;
9481 survey_idx++;
9482 }
9483
9484 out:
9485 cb->args[2] = survey_idx;
9486 res = skb->len;
9487 out_err:
9488 kfree(attrbuf);
9489 rtnl_unlock();
9490 return res;
9491 }
9492
nl80211_valid_wpa_versions(u32 wpa_versions)9493 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9494 {
9495 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9496 NL80211_WPA_VERSION_2 |
9497 NL80211_WPA_VERSION_3));
9498 }
9499
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)9500 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9501 {
9502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9503 struct net_device *dev = info->user_ptr[1];
9504 struct ieee80211_channel *chan;
9505 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9506 int err, ssid_len, ie_len = 0, auth_data_len = 0;
9507 enum nl80211_auth_type auth_type;
9508 struct key_parse key;
9509 bool local_state_change;
9510 u32 freq;
9511
9512 if (!info->attrs[NL80211_ATTR_MAC])
9513 return -EINVAL;
9514
9515 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9516 return -EINVAL;
9517
9518 if (!info->attrs[NL80211_ATTR_SSID])
9519 return -EINVAL;
9520
9521 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9522 return -EINVAL;
9523
9524 err = nl80211_parse_key(info, &key);
9525 if (err)
9526 return err;
9527
9528 if (key.idx >= 0) {
9529 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9530 return -EINVAL;
9531 if (!key.p.key || !key.p.key_len)
9532 return -EINVAL;
9533 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9534 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9535 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9536 key.p.key_len != WLAN_KEY_LEN_WEP104))
9537 return -EINVAL;
9538 if (key.idx > 3)
9539 return -EINVAL;
9540 } else {
9541 key.p.key_len = 0;
9542 key.p.key = NULL;
9543 }
9544
9545 if (key.idx >= 0) {
9546 int i;
9547 bool ok = false;
9548
9549 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9550 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9551 ok = true;
9552 break;
9553 }
9554 }
9555 if (!ok)
9556 return -EINVAL;
9557 }
9558
9559 if (!rdev->ops->auth)
9560 return -EOPNOTSUPP;
9561
9562 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9563 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9564 return -EOPNOTSUPP;
9565
9566 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9567 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9568 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9569 freq +=
9570 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9571
9572 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9573 if (!chan)
9574 return -EINVAL;
9575
9576 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9577 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9578
9579 if (info->attrs[NL80211_ATTR_IE]) {
9580 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9581 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9582 }
9583
9584 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9585 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9586 return -EINVAL;
9587
9588 if ((auth_type == NL80211_AUTHTYPE_SAE ||
9589 auth_type == NL80211_AUTHTYPE_FILS_SK ||
9590 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9591 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9592 !info->attrs[NL80211_ATTR_AUTH_DATA])
9593 return -EINVAL;
9594
9595 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9596 if (auth_type != NL80211_AUTHTYPE_SAE &&
9597 auth_type != NL80211_AUTHTYPE_FILS_SK &&
9598 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9599 auth_type != NL80211_AUTHTYPE_FILS_PK)
9600 return -EINVAL;
9601 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9602 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9603 }
9604
9605 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9606
9607 /*
9608 * Since we no longer track auth state, ignore
9609 * requests to only change local state.
9610 */
9611 if (local_state_change)
9612 return 0;
9613
9614 wdev_lock(dev->ieee80211_ptr);
9615 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9616 ssid, ssid_len, ie, ie_len,
9617 key.p.key, key.p.key_len, key.idx,
9618 auth_data, auth_data_len);
9619 wdev_unlock(dev->ieee80211_ptr);
9620 return err;
9621 }
9622
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)9623 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9624 struct genl_info *info)
9625 {
9626 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9627 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9628 return -EINVAL;
9629 }
9630
9631 if (!rdev->ops->tx_control_port ||
9632 !wiphy_ext_feature_isset(&rdev->wiphy,
9633 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9634 return -EOPNOTSUPP;
9635
9636 return 0;
9637 }
9638
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)9639 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9640 struct genl_info *info,
9641 struct cfg80211_crypto_settings *settings,
9642 int cipher_limit)
9643 {
9644 memset(settings, 0, sizeof(*settings));
9645
9646 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9647
9648 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9649 u16 proto;
9650
9651 proto = nla_get_u16(
9652 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9653 settings->control_port_ethertype = cpu_to_be16(proto);
9654 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9655 proto != ETH_P_PAE)
9656 return -EINVAL;
9657 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9658 settings->control_port_no_encrypt = true;
9659 } else
9660 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9661
9662 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9663 int r = validate_pae_over_nl80211(rdev, info);
9664
9665 if (r < 0)
9666 return r;
9667
9668 settings->control_port_over_nl80211 = true;
9669
9670 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9671 settings->control_port_no_preauth = true;
9672 }
9673
9674 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9675 void *data;
9676 int len, i;
9677
9678 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9679 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9680 settings->n_ciphers_pairwise = len / sizeof(u32);
9681
9682 if (len % sizeof(u32))
9683 return -EINVAL;
9684
9685 if (settings->n_ciphers_pairwise > cipher_limit)
9686 return -EINVAL;
9687
9688 memcpy(settings->ciphers_pairwise, data, len);
9689
9690 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9691 if (!cfg80211_supported_cipher_suite(
9692 &rdev->wiphy,
9693 settings->ciphers_pairwise[i]))
9694 return -EINVAL;
9695 }
9696
9697 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9698 settings->cipher_group =
9699 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9700 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9701 settings->cipher_group))
9702 return -EINVAL;
9703 }
9704
9705 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9706 settings->wpa_versions =
9707 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9708 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9709 return -EINVAL;
9710 }
9711
9712 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9713 void *data;
9714 int len;
9715
9716 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9717 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9718 settings->n_akm_suites = len / sizeof(u32);
9719
9720 if (len % sizeof(u32))
9721 return -EINVAL;
9722
9723 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9724 return -EINVAL;
9725
9726 memcpy(settings->akm_suites, data, len);
9727 }
9728
9729 if (info->attrs[NL80211_ATTR_PMK]) {
9730 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9731 return -EINVAL;
9732 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9733 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9734 !wiphy_ext_feature_isset(&rdev->wiphy,
9735 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9736 return -EINVAL;
9737 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9738 }
9739
9740 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9741 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9742 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9743 !wiphy_ext_feature_isset(&rdev->wiphy,
9744 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9745 return -EINVAL;
9746 settings->sae_pwd =
9747 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9748 settings->sae_pwd_len =
9749 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9750 }
9751
9752 return 0;
9753 }
9754
nl80211_associate(struct sk_buff * skb,struct genl_info * info)9755 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9756 {
9757 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9758 struct net_device *dev = info->user_ptr[1];
9759 struct ieee80211_channel *chan;
9760 struct cfg80211_assoc_request req = {};
9761 const u8 *bssid, *ssid;
9762 int err, ssid_len = 0;
9763 u32 freq;
9764
9765 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9766 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9767 return -EPERM;
9768
9769 if (!info->attrs[NL80211_ATTR_MAC] ||
9770 !info->attrs[NL80211_ATTR_SSID] ||
9771 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9772 return -EINVAL;
9773
9774 if (!rdev->ops->assoc)
9775 return -EOPNOTSUPP;
9776
9777 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9778 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9779 return -EOPNOTSUPP;
9780
9781 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9782
9783 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9784 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9785 freq +=
9786 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9787 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9788 if (!chan)
9789 return -EINVAL;
9790
9791 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9792 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9793
9794 if (info->attrs[NL80211_ATTR_IE]) {
9795 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9796 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9797 }
9798
9799 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9800 enum nl80211_mfp mfp =
9801 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9802 if (mfp == NL80211_MFP_REQUIRED)
9803 req.use_mfp = true;
9804 else if (mfp != NL80211_MFP_NO)
9805 return -EINVAL;
9806 }
9807
9808 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9809 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9810
9811 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9812 req.flags |= ASSOC_REQ_DISABLE_HT;
9813
9814 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9815 memcpy(&req.ht_capa_mask,
9816 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9817 sizeof(req.ht_capa_mask));
9818
9819 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9820 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9821 return -EINVAL;
9822 memcpy(&req.ht_capa,
9823 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9824 sizeof(req.ht_capa));
9825 }
9826
9827 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9828 req.flags |= ASSOC_REQ_DISABLE_VHT;
9829
9830 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9831 memcpy(&req.vht_capa_mask,
9832 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9833 sizeof(req.vht_capa_mask));
9834
9835 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9836 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9837 return -EINVAL;
9838 memcpy(&req.vht_capa,
9839 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9840 sizeof(req.vht_capa));
9841 }
9842
9843 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9844 if (!((rdev->wiphy.features &
9845 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9846 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9847 !wiphy_ext_feature_isset(&rdev->wiphy,
9848 NL80211_EXT_FEATURE_RRM))
9849 return -EINVAL;
9850 req.flags |= ASSOC_REQ_USE_RRM;
9851 }
9852
9853 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9854 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9855 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9856 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9857 return -EINVAL;
9858 req.fils_nonces =
9859 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9860 }
9861
9862 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9863 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9864 return -EINVAL;
9865 memcpy(&req.s1g_capa_mask,
9866 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9867 sizeof(req.s1g_capa_mask));
9868 }
9869
9870 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9871 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9872 return -EINVAL;
9873 memcpy(&req.s1g_capa,
9874 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9875 sizeof(req.s1g_capa));
9876 }
9877
9878 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9879 if (!err) {
9880 wdev_lock(dev->ieee80211_ptr);
9881
9882 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9883 ssid, ssid_len, &req);
9884
9885 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9886 dev->ieee80211_ptr->conn_owner_nlportid =
9887 info->snd_portid;
9888 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9889 bssid, ETH_ALEN);
9890 }
9891
9892 wdev_unlock(dev->ieee80211_ptr);
9893 }
9894
9895 return err;
9896 }
9897
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)9898 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9899 {
9900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9901 struct net_device *dev = info->user_ptr[1];
9902 const u8 *ie = NULL, *bssid;
9903 int ie_len = 0, err;
9904 u16 reason_code;
9905 bool local_state_change;
9906
9907 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9908 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9909 return -EPERM;
9910
9911 if (!info->attrs[NL80211_ATTR_MAC])
9912 return -EINVAL;
9913
9914 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9915 return -EINVAL;
9916
9917 if (!rdev->ops->deauth)
9918 return -EOPNOTSUPP;
9919
9920 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9921 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9922 return -EOPNOTSUPP;
9923
9924 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9925
9926 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9927 if (reason_code == 0) {
9928 /* Reason Code 0 is reserved */
9929 return -EINVAL;
9930 }
9931
9932 if (info->attrs[NL80211_ATTR_IE]) {
9933 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9934 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9935 }
9936
9937 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9938
9939 wdev_lock(dev->ieee80211_ptr);
9940 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9941 local_state_change);
9942 wdev_unlock(dev->ieee80211_ptr);
9943 return err;
9944 }
9945
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)9946 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9947 {
9948 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9949 struct net_device *dev = info->user_ptr[1];
9950 const u8 *ie = NULL, *bssid;
9951 int ie_len = 0, err;
9952 u16 reason_code;
9953 bool local_state_change;
9954
9955 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9956 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9957 return -EPERM;
9958
9959 if (!info->attrs[NL80211_ATTR_MAC])
9960 return -EINVAL;
9961
9962 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9963 return -EINVAL;
9964
9965 if (!rdev->ops->disassoc)
9966 return -EOPNOTSUPP;
9967
9968 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9969 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9970 return -EOPNOTSUPP;
9971
9972 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9973
9974 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9975 if (reason_code == 0) {
9976 /* Reason Code 0 is reserved */
9977 return -EINVAL;
9978 }
9979
9980 if (info->attrs[NL80211_ATTR_IE]) {
9981 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9982 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9983 }
9984
9985 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9986
9987 wdev_lock(dev->ieee80211_ptr);
9988 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9989 local_state_change);
9990 wdev_unlock(dev->ieee80211_ptr);
9991 return err;
9992 }
9993
9994 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)9995 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9996 int mcast_rate[NUM_NL80211_BANDS],
9997 int rateval)
9998 {
9999 struct wiphy *wiphy = &rdev->wiphy;
10000 bool found = false;
10001 int band, i;
10002
10003 for (band = 0; band < NUM_NL80211_BANDS; band++) {
10004 struct ieee80211_supported_band *sband;
10005
10006 sband = wiphy->bands[band];
10007 if (!sband)
10008 continue;
10009
10010 for (i = 0; i < sband->n_bitrates; i++) {
10011 if (sband->bitrates[i].bitrate == rateval) {
10012 mcast_rate[band] = i + 1;
10013 found = true;
10014 break;
10015 }
10016 }
10017 }
10018
10019 return found;
10020 }
10021
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)10022 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10023 {
10024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10025 struct net_device *dev = info->user_ptr[1];
10026 struct cfg80211_ibss_params ibss;
10027 struct wiphy *wiphy;
10028 struct cfg80211_cached_keys *connkeys = NULL;
10029 int err;
10030
10031 memset(&ibss, 0, sizeof(ibss));
10032
10033 if (!info->attrs[NL80211_ATTR_SSID] ||
10034 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10035 return -EINVAL;
10036
10037 ibss.beacon_interval = 100;
10038
10039 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10040 ibss.beacon_interval =
10041 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10042
10043 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10044 ibss.beacon_interval);
10045 if (err)
10046 return err;
10047
10048 if (!rdev->ops->join_ibss)
10049 return -EOPNOTSUPP;
10050
10051 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10052 return -EOPNOTSUPP;
10053
10054 wiphy = &rdev->wiphy;
10055
10056 if (info->attrs[NL80211_ATTR_MAC]) {
10057 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10058
10059 if (!is_valid_ether_addr(ibss.bssid))
10060 return -EINVAL;
10061 }
10062 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10063 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10064
10065 if (info->attrs[NL80211_ATTR_IE]) {
10066 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10067 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10068 }
10069
10070 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10071 if (err)
10072 return err;
10073
10074 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10075 NL80211_IFTYPE_ADHOC))
10076 return -EINVAL;
10077
10078 switch (ibss.chandef.width) {
10079 case NL80211_CHAN_WIDTH_5:
10080 case NL80211_CHAN_WIDTH_10:
10081 case NL80211_CHAN_WIDTH_20_NOHT:
10082 break;
10083 case NL80211_CHAN_WIDTH_20:
10084 case NL80211_CHAN_WIDTH_40:
10085 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10086 return -EINVAL;
10087 break;
10088 case NL80211_CHAN_WIDTH_80:
10089 case NL80211_CHAN_WIDTH_80P80:
10090 case NL80211_CHAN_WIDTH_160:
10091 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10092 return -EINVAL;
10093 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10094 NL80211_EXT_FEATURE_VHT_IBSS))
10095 return -EINVAL;
10096 break;
10097 default:
10098 return -EINVAL;
10099 }
10100
10101 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10102 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10103
10104 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10105 u8 *rates =
10106 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10107 int n_rates =
10108 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10109 struct ieee80211_supported_band *sband =
10110 wiphy->bands[ibss.chandef.chan->band];
10111
10112 err = ieee80211_get_ratemask(sband, rates, n_rates,
10113 &ibss.basic_rates);
10114 if (err)
10115 return err;
10116 }
10117
10118 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10119 memcpy(&ibss.ht_capa_mask,
10120 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10121 sizeof(ibss.ht_capa_mask));
10122
10123 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10124 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10125 return -EINVAL;
10126 memcpy(&ibss.ht_capa,
10127 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10128 sizeof(ibss.ht_capa));
10129 }
10130
10131 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10132 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10133 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10134 return -EINVAL;
10135
10136 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10137 bool no_ht = false;
10138
10139 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10140 if (IS_ERR(connkeys))
10141 return PTR_ERR(connkeys);
10142
10143 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10144 no_ht) {
10145 kfree_sensitive(connkeys);
10146 return -EINVAL;
10147 }
10148 }
10149
10150 ibss.control_port =
10151 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10152
10153 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10154 int r = validate_pae_over_nl80211(rdev, info);
10155
10156 if (r < 0) {
10157 kfree_sensitive(connkeys);
10158 return r;
10159 }
10160
10161 ibss.control_port_over_nl80211 = true;
10162 }
10163
10164 ibss.userspace_handles_dfs =
10165 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10166
10167 wdev_lock(dev->ieee80211_ptr);
10168 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10169 if (err)
10170 kfree_sensitive(connkeys);
10171 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10172 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10173 wdev_unlock(dev->ieee80211_ptr);
10174
10175 return err;
10176 }
10177
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)10178 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10179 {
10180 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10181 struct net_device *dev = info->user_ptr[1];
10182
10183 if (!rdev->ops->leave_ibss)
10184 return -EOPNOTSUPP;
10185
10186 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10187 return -EOPNOTSUPP;
10188
10189 return cfg80211_leave_ibss(rdev, dev, false);
10190 }
10191
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)10192 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10193 {
10194 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10195 struct net_device *dev = info->user_ptr[1];
10196 int mcast_rate[NUM_NL80211_BANDS];
10197 u32 nla_rate;
10198 int err;
10199
10200 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10201 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10202 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10203 return -EOPNOTSUPP;
10204
10205 if (!rdev->ops->set_mcast_rate)
10206 return -EOPNOTSUPP;
10207
10208 memset(mcast_rate, 0, sizeof(mcast_rate));
10209
10210 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10211 return -EINVAL;
10212
10213 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10214 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10215 return -EINVAL;
10216
10217 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10218
10219 return err;
10220 }
10221
10222 static struct sk_buff *
__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,int approxlen,u32 portid,u32 seq,enum nl80211_commands cmd,enum nl80211_attrs attr,const struct nl80211_vendor_cmd_info * info,gfp_t gfp)10223 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10224 struct wireless_dev *wdev, int approxlen,
10225 u32 portid, u32 seq, enum nl80211_commands cmd,
10226 enum nl80211_attrs attr,
10227 const struct nl80211_vendor_cmd_info *info,
10228 gfp_t gfp)
10229 {
10230 struct sk_buff *skb;
10231 void *hdr;
10232 struct nlattr *data;
10233
10234 skb = nlmsg_new(approxlen + 100, gfp);
10235 if (!skb)
10236 return NULL;
10237
10238 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10239 if (!hdr) {
10240 kfree_skb(skb);
10241 return NULL;
10242 }
10243
10244 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10245 goto nla_put_failure;
10246
10247 if (info) {
10248 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10249 info->vendor_id))
10250 goto nla_put_failure;
10251 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10252 info->subcmd))
10253 goto nla_put_failure;
10254 }
10255
10256 if (wdev) {
10257 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10258 wdev_id(wdev), NL80211_ATTR_PAD))
10259 goto nla_put_failure;
10260 if (wdev->netdev &&
10261 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10262 wdev->netdev->ifindex))
10263 goto nla_put_failure;
10264 }
10265
10266 data = nla_nest_start_noflag(skb, attr);
10267 if (!data)
10268 goto nla_put_failure;
10269
10270 ((void **)skb->cb)[0] = rdev;
10271 ((void **)skb->cb)[1] = hdr;
10272 ((void **)skb->cb)[2] = data;
10273
10274 return skb;
10275
10276 nla_put_failure:
10277 kfree_skb(skb);
10278 return NULL;
10279 }
10280
__cfg80211_alloc_event_skb(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_commands cmd,enum nl80211_attrs attr,unsigned int portid,int vendor_event_idx,int approxlen,gfp_t gfp)10281 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10282 struct wireless_dev *wdev,
10283 enum nl80211_commands cmd,
10284 enum nl80211_attrs attr,
10285 unsigned int portid,
10286 int vendor_event_idx,
10287 int approxlen, gfp_t gfp)
10288 {
10289 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10290 const struct nl80211_vendor_cmd_info *info;
10291
10292 switch (cmd) {
10293 case NL80211_CMD_TESTMODE:
10294 if (WARN_ON(vendor_event_idx != -1))
10295 return NULL;
10296 info = NULL;
10297 break;
10298 case NL80211_CMD_VENDOR:
10299 if (WARN_ON(vendor_event_idx < 0 ||
10300 vendor_event_idx >= wiphy->n_vendor_events))
10301 return NULL;
10302 info = &wiphy->vendor_events[vendor_event_idx];
10303 break;
10304 default:
10305 WARN_ON(1);
10306 return NULL;
10307 }
10308
10309 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10310 cmd, attr, info, gfp);
10311 }
10312 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10313
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)10314 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10315 {
10316 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10317 void *hdr = ((void **)skb->cb)[1];
10318 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10319 struct nlattr *data = ((void **)skb->cb)[2];
10320 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10321
10322 /* clear CB data for netlink core to own from now on */
10323 memset(skb->cb, 0, sizeof(skb->cb));
10324
10325 nla_nest_end(skb, data);
10326 genlmsg_end(skb, hdr);
10327
10328 if (nlhdr->nlmsg_pid) {
10329 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10330 nlhdr->nlmsg_pid);
10331 } else {
10332 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10333 mcgrp = NL80211_MCGRP_VENDOR;
10334
10335 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10336 skb, 0, mcgrp, gfp);
10337 }
10338 }
10339 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10340
10341 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)10342 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10343 {
10344 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10345 struct wireless_dev *wdev =
10346 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10347 int err;
10348
10349 if (!rdev->ops->testmode_cmd)
10350 return -EOPNOTSUPP;
10351
10352 if (IS_ERR(wdev)) {
10353 err = PTR_ERR(wdev);
10354 if (err != -EINVAL)
10355 return err;
10356 wdev = NULL;
10357 } else if (wdev->wiphy != &rdev->wiphy) {
10358 return -EINVAL;
10359 }
10360
10361 if (!info->attrs[NL80211_ATTR_TESTDATA])
10362 return -EINVAL;
10363
10364 rdev->cur_cmd_info = info;
10365 err = rdev_testmode_cmd(rdev, wdev,
10366 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10367 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10368 rdev->cur_cmd_info = NULL;
10369
10370 return err;
10371 }
10372
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)10373 static int nl80211_testmode_dump(struct sk_buff *skb,
10374 struct netlink_callback *cb)
10375 {
10376 struct cfg80211_registered_device *rdev;
10377 struct nlattr **attrbuf = NULL;
10378 int err;
10379 long phy_idx;
10380 void *data = NULL;
10381 int data_len = 0;
10382
10383 rtnl_lock();
10384
10385 if (cb->args[0]) {
10386 /*
10387 * 0 is a valid index, but not valid for args[0],
10388 * so we need to offset by 1.
10389 */
10390 phy_idx = cb->args[0] - 1;
10391
10392 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10393 if (!rdev) {
10394 err = -ENOENT;
10395 goto out_err;
10396 }
10397 } else {
10398 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10399 GFP_KERNEL);
10400 if (!attrbuf) {
10401 err = -ENOMEM;
10402 goto out_err;
10403 }
10404
10405 err = nlmsg_parse_deprecated(cb->nlh,
10406 GENL_HDRLEN + nl80211_fam.hdrsize,
10407 attrbuf, nl80211_fam.maxattr,
10408 nl80211_policy, NULL);
10409 if (err)
10410 goto out_err;
10411
10412 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10413 if (IS_ERR(rdev)) {
10414 err = PTR_ERR(rdev);
10415 goto out_err;
10416 }
10417 phy_idx = rdev->wiphy_idx;
10418
10419 if (attrbuf[NL80211_ATTR_TESTDATA])
10420 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10421 }
10422
10423 if (cb->args[1]) {
10424 data = nla_data((void *)cb->args[1]);
10425 data_len = nla_len((void *)cb->args[1]);
10426 }
10427
10428 if (!rdev->ops->testmode_dump) {
10429 err = -EOPNOTSUPP;
10430 goto out_err;
10431 }
10432
10433 while (1) {
10434 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10435 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10436 NL80211_CMD_TESTMODE);
10437 struct nlattr *tmdata;
10438
10439 if (!hdr)
10440 break;
10441
10442 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10443 genlmsg_cancel(skb, hdr);
10444 break;
10445 }
10446
10447 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10448 if (!tmdata) {
10449 genlmsg_cancel(skb, hdr);
10450 break;
10451 }
10452 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10453 nla_nest_end(skb, tmdata);
10454
10455 if (err == -ENOBUFS || err == -ENOENT) {
10456 genlmsg_cancel(skb, hdr);
10457 break;
10458 } else if (err) {
10459 genlmsg_cancel(skb, hdr);
10460 goto out_err;
10461 }
10462
10463 genlmsg_end(skb, hdr);
10464 }
10465
10466 err = skb->len;
10467 /* see above */
10468 cb->args[0] = phy_idx + 1;
10469 out_err:
10470 kfree(attrbuf);
10471 rtnl_unlock();
10472 return err;
10473 }
10474 #endif
10475
nl80211_connect(struct sk_buff * skb,struct genl_info * info)10476 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10477 {
10478 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10479 struct net_device *dev = info->user_ptr[1];
10480 struct cfg80211_connect_params connect;
10481 struct wiphy *wiphy;
10482 struct cfg80211_cached_keys *connkeys = NULL;
10483 u32 freq = 0;
10484 int err;
10485
10486 memset(&connect, 0, sizeof(connect));
10487
10488 if (!info->attrs[NL80211_ATTR_SSID] ||
10489 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10490 return -EINVAL;
10491
10492 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10493 connect.auth_type =
10494 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10495 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10496 NL80211_CMD_CONNECT))
10497 return -EINVAL;
10498 } else
10499 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10500
10501 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10502
10503 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10504 !wiphy_ext_feature_isset(&rdev->wiphy,
10505 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10506 return -EINVAL;
10507 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10508
10509 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10510 NL80211_MAX_NR_CIPHER_SUITES);
10511 if (err)
10512 return err;
10513
10514 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10515 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10516 return -EOPNOTSUPP;
10517
10518 wiphy = &rdev->wiphy;
10519
10520 connect.bg_scan_period = -1;
10521 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10522 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10523 connect.bg_scan_period =
10524 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10525 }
10526
10527 if (info->attrs[NL80211_ATTR_MAC])
10528 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10529 else if (info->attrs[NL80211_ATTR_MAC_HINT])
10530 connect.bssid_hint =
10531 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10532 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10533 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10534
10535 if (info->attrs[NL80211_ATTR_IE]) {
10536 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10537 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10538 }
10539
10540 if (info->attrs[NL80211_ATTR_USE_MFP]) {
10541 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10542 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10543 !wiphy_ext_feature_isset(&rdev->wiphy,
10544 NL80211_EXT_FEATURE_MFP_OPTIONAL))
10545 return -EOPNOTSUPP;
10546 } else {
10547 connect.mfp = NL80211_MFP_NO;
10548 }
10549
10550 if (info->attrs[NL80211_ATTR_PREV_BSSID])
10551 connect.prev_bssid =
10552 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10553
10554 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10555 freq = MHZ_TO_KHZ(nla_get_u32(
10556 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10557 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10558 freq +=
10559 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10560
10561 if (freq) {
10562 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10563 if (!connect.channel)
10564 return -EINVAL;
10565 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10566 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10567 freq = MHZ_TO_KHZ(freq);
10568 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10569 if (!connect.channel_hint)
10570 return -EINVAL;
10571 }
10572
10573 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10574 connect.edmg.channels =
10575 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10576
10577 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10578 connect.edmg.bw_config =
10579 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10580 }
10581
10582 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10583 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10584 if (IS_ERR(connkeys))
10585 return PTR_ERR(connkeys);
10586 }
10587
10588 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10589 connect.flags |= ASSOC_REQ_DISABLE_HT;
10590
10591 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10592 memcpy(&connect.ht_capa_mask,
10593 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10594 sizeof(connect.ht_capa_mask));
10595
10596 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10597 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10598 kfree_sensitive(connkeys);
10599 return -EINVAL;
10600 }
10601 memcpy(&connect.ht_capa,
10602 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10603 sizeof(connect.ht_capa));
10604 }
10605
10606 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10607 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10608
10609 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10610 memcpy(&connect.vht_capa_mask,
10611 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10612 sizeof(connect.vht_capa_mask));
10613
10614 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10615 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10616 kfree_sensitive(connkeys);
10617 return -EINVAL;
10618 }
10619 memcpy(&connect.vht_capa,
10620 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10621 sizeof(connect.vht_capa));
10622 }
10623
10624 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10625 if (!((rdev->wiphy.features &
10626 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10627 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10628 !wiphy_ext_feature_isset(&rdev->wiphy,
10629 NL80211_EXT_FEATURE_RRM)) {
10630 kfree_sensitive(connkeys);
10631 return -EINVAL;
10632 }
10633 connect.flags |= ASSOC_REQ_USE_RRM;
10634 }
10635
10636 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10637 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10638 kfree_sensitive(connkeys);
10639 return -EOPNOTSUPP;
10640 }
10641
10642 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10643 /* bss selection makes no sense if bssid is set */
10644 if (connect.bssid) {
10645 kfree_sensitive(connkeys);
10646 return -EINVAL;
10647 }
10648
10649 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10650 wiphy, &connect.bss_select);
10651 if (err) {
10652 kfree_sensitive(connkeys);
10653 return err;
10654 }
10655 }
10656
10657 if (wiphy_ext_feature_isset(&rdev->wiphy,
10658 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10659 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10660 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10661 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10662 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10663 connect.fils_erp_username =
10664 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10665 connect.fils_erp_username_len =
10666 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10667 connect.fils_erp_realm =
10668 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10669 connect.fils_erp_realm_len =
10670 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10671 connect.fils_erp_next_seq_num =
10672 nla_get_u16(
10673 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10674 connect.fils_erp_rrk =
10675 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10676 connect.fils_erp_rrk_len =
10677 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10678 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10679 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10680 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10681 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10682 kfree_sensitive(connkeys);
10683 return -EINVAL;
10684 }
10685
10686 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10687 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10688 kfree_sensitive(connkeys);
10689 GENL_SET_ERR_MSG(info,
10690 "external auth requires connection ownership");
10691 return -EINVAL;
10692 }
10693 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10694 }
10695
10696 wdev_lock(dev->ieee80211_ptr);
10697
10698 err = cfg80211_connect(rdev, dev, &connect, connkeys,
10699 connect.prev_bssid);
10700 if (err)
10701 kfree_sensitive(connkeys);
10702
10703 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10704 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10705 if (connect.bssid)
10706 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10707 connect.bssid, ETH_ALEN);
10708 else
10709 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10710 }
10711
10712 wdev_unlock(dev->ieee80211_ptr);
10713
10714 return err;
10715 }
10716
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)10717 static int nl80211_update_connect_params(struct sk_buff *skb,
10718 struct genl_info *info)
10719 {
10720 struct cfg80211_connect_params connect = {};
10721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10722 struct net_device *dev = info->user_ptr[1];
10723 struct wireless_dev *wdev = dev->ieee80211_ptr;
10724 bool fils_sk_offload;
10725 u32 auth_type;
10726 u32 changed = 0;
10727 int ret;
10728
10729 if (!rdev->ops->update_connect_params)
10730 return -EOPNOTSUPP;
10731
10732 if (info->attrs[NL80211_ATTR_IE]) {
10733 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10734 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10735 changed |= UPDATE_ASSOC_IES;
10736 }
10737
10738 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10739 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10740
10741 /*
10742 * when driver supports fils-sk offload all attributes must be
10743 * provided. So the else covers "fils-sk-not-all" and
10744 * "no-fils-sk-any".
10745 */
10746 if (fils_sk_offload &&
10747 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10748 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10749 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10750 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10751 connect.fils_erp_username =
10752 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10753 connect.fils_erp_username_len =
10754 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10755 connect.fils_erp_realm =
10756 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10757 connect.fils_erp_realm_len =
10758 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10759 connect.fils_erp_next_seq_num =
10760 nla_get_u16(
10761 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10762 connect.fils_erp_rrk =
10763 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10764 connect.fils_erp_rrk_len =
10765 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10766 changed |= UPDATE_FILS_ERP_INFO;
10767 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10768 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10769 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10770 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10771 return -EINVAL;
10772 }
10773
10774 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10775 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10776 if (!nl80211_valid_auth_type(rdev, auth_type,
10777 NL80211_CMD_CONNECT))
10778 return -EINVAL;
10779
10780 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10781 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10782 return -EINVAL;
10783
10784 connect.auth_type = auth_type;
10785 changed |= UPDATE_AUTH_TYPE;
10786 }
10787
10788 wdev_lock(dev->ieee80211_ptr);
10789 if (!wdev->current_bss)
10790 ret = -ENOLINK;
10791 else
10792 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10793 wdev_unlock(dev->ieee80211_ptr);
10794
10795 return ret;
10796 }
10797
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)10798 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10799 {
10800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10801 struct net_device *dev = info->user_ptr[1];
10802 u16 reason;
10803 int ret;
10804
10805 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10806 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10807 return -EPERM;
10808
10809 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10810 reason = WLAN_REASON_DEAUTH_LEAVING;
10811 else
10812 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10813
10814 if (reason == 0)
10815 return -EINVAL;
10816
10817 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10818 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10819 return -EOPNOTSUPP;
10820
10821 wdev_lock(dev->ieee80211_ptr);
10822 ret = cfg80211_disconnect(rdev, dev, reason, true);
10823 wdev_unlock(dev->ieee80211_ptr);
10824 return ret;
10825 }
10826
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)10827 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10828 {
10829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10830 struct net *net;
10831 int err;
10832
10833 if (info->attrs[NL80211_ATTR_PID]) {
10834 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10835
10836 net = get_net_ns_by_pid(pid);
10837 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10838 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10839
10840 net = get_net_ns_by_fd(fd);
10841 } else {
10842 return -EINVAL;
10843 }
10844
10845 if (IS_ERR(net))
10846 return PTR_ERR(net);
10847
10848 err = 0;
10849
10850 /* check if anything to do */
10851 if (!net_eq(wiphy_net(&rdev->wiphy), net))
10852 err = cfg80211_switch_netns(rdev, net);
10853
10854 put_net(net);
10855 return err;
10856 }
10857
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)10858 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10859 {
10860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10861 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10862 struct cfg80211_pmksa *pmksa) = NULL;
10863 struct net_device *dev = info->user_ptr[1];
10864 struct cfg80211_pmksa pmksa;
10865
10866 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10867
10868 if (!info->attrs[NL80211_ATTR_PMKID])
10869 return -EINVAL;
10870
10871 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10872
10873 if (info->attrs[NL80211_ATTR_MAC]) {
10874 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10875 } else if (info->attrs[NL80211_ATTR_SSID] &&
10876 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10877 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10878 info->attrs[NL80211_ATTR_PMK])) {
10879 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10880 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10881 pmksa.cache_id =
10882 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10883 } else {
10884 return -EINVAL;
10885 }
10886 if (info->attrs[NL80211_ATTR_PMK]) {
10887 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10888 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10889 }
10890
10891 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10892 pmksa.pmk_lifetime =
10893 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10894
10895 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10896 pmksa.pmk_reauth_threshold =
10897 nla_get_u8(
10898 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10899
10900 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10901 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10902 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10903 wiphy_ext_feature_isset(&rdev->wiphy,
10904 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10905 return -EOPNOTSUPP;
10906
10907 switch (info->genlhdr->cmd) {
10908 case NL80211_CMD_SET_PMKSA:
10909 rdev_ops = rdev->ops->set_pmksa;
10910 break;
10911 case NL80211_CMD_DEL_PMKSA:
10912 rdev_ops = rdev->ops->del_pmksa;
10913 break;
10914 default:
10915 WARN_ON(1);
10916 break;
10917 }
10918
10919 if (!rdev_ops)
10920 return -EOPNOTSUPP;
10921
10922 return rdev_ops(&rdev->wiphy, dev, &pmksa);
10923 }
10924
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)10925 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10926 {
10927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10928 struct net_device *dev = info->user_ptr[1];
10929
10930 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10931 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10932 return -EOPNOTSUPP;
10933
10934 if (!rdev->ops->flush_pmksa)
10935 return -EOPNOTSUPP;
10936
10937 return rdev_flush_pmksa(rdev, dev);
10938 }
10939
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)10940 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10941 {
10942 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10943 struct net_device *dev = info->user_ptr[1];
10944 u8 action_code, dialog_token;
10945 u32 peer_capability = 0;
10946 u16 status_code;
10947 u8 *peer;
10948 bool initiator;
10949
10950 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10951 !rdev->ops->tdls_mgmt)
10952 return -EOPNOTSUPP;
10953
10954 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10955 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10956 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10957 !info->attrs[NL80211_ATTR_IE] ||
10958 !info->attrs[NL80211_ATTR_MAC])
10959 return -EINVAL;
10960
10961 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10962 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10963 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10964 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10965 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10966 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10967 peer_capability =
10968 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10969
10970 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10971 dialog_token, status_code, peer_capability,
10972 initiator,
10973 nla_data(info->attrs[NL80211_ATTR_IE]),
10974 nla_len(info->attrs[NL80211_ATTR_IE]));
10975 }
10976
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)10977 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10978 {
10979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10980 struct net_device *dev = info->user_ptr[1];
10981 enum nl80211_tdls_operation operation;
10982 u8 *peer;
10983
10984 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10985 !rdev->ops->tdls_oper)
10986 return -EOPNOTSUPP;
10987
10988 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10989 !info->attrs[NL80211_ATTR_MAC])
10990 return -EINVAL;
10991
10992 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10993 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10994
10995 return rdev_tdls_oper(rdev, dev, peer, operation);
10996 }
10997
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)10998 static int nl80211_remain_on_channel(struct sk_buff *skb,
10999 struct genl_info *info)
11000 {
11001 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11002 struct wireless_dev *wdev = info->user_ptr[1];
11003 struct cfg80211_chan_def chandef;
11004 const struct cfg80211_chan_def *compat_chandef;
11005 struct sk_buff *msg;
11006 void *hdr;
11007 u64 cookie;
11008 u32 duration;
11009 int err;
11010
11011 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11012 !info->attrs[NL80211_ATTR_DURATION])
11013 return -EINVAL;
11014
11015 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11016
11017 if (!rdev->ops->remain_on_channel ||
11018 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11019 return -EOPNOTSUPP;
11020
11021 /*
11022 * We should be on that channel for at least a minimum amount of
11023 * time (10ms) but no longer than the driver supports.
11024 */
11025 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11026 duration > rdev->wiphy.max_remain_on_channel_duration)
11027 return -EINVAL;
11028
11029 err = nl80211_parse_chandef(rdev, info, &chandef);
11030 if (err)
11031 return err;
11032
11033 wdev_lock(wdev);
11034 if (!cfg80211_off_channel_oper_allowed(wdev) &&
11035 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11036 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11037 &chandef);
11038 if (compat_chandef != &chandef) {
11039 wdev_unlock(wdev);
11040 return -EBUSY;
11041 }
11042 }
11043 wdev_unlock(wdev);
11044
11045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11046 if (!msg)
11047 return -ENOMEM;
11048
11049 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11050 NL80211_CMD_REMAIN_ON_CHANNEL);
11051 if (!hdr) {
11052 err = -ENOBUFS;
11053 goto free_msg;
11054 }
11055
11056 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11057 duration, &cookie);
11058
11059 if (err)
11060 goto free_msg;
11061
11062 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11063 NL80211_ATTR_PAD))
11064 goto nla_put_failure;
11065
11066 genlmsg_end(msg, hdr);
11067
11068 return genlmsg_reply(msg, info);
11069
11070 nla_put_failure:
11071 err = -ENOBUFS;
11072 free_msg:
11073 nlmsg_free(msg);
11074 return err;
11075 }
11076
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)11077 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11078 struct genl_info *info)
11079 {
11080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11081 struct wireless_dev *wdev = info->user_ptr[1];
11082 u64 cookie;
11083
11084 if (!info->attrs[NL80211_ATTR_COOKIE])
11085 return -EINVAL;
11086
11087 if (!rdev->ops->cancel_remain_on_channel)
11088 return -EOPNOTSUPP;
11089
11090 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11091
11092 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11093 }
11094
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)11095 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11096 struct genl_info *info)
11097 {
11098 struct cfg80211_bitrate_mask mask;
11099 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11100 struct net_device *dev = info->user_ptr[1];
11101 struct wireless_dev *wdev = dev->ieee80211_ptr;
11102 int err;
11103
11104 if (!rdev->ops->set_bitrate_mask)
11105 return -EOPNOTSUPP;
11106
11107 wdev_lock(wdev);
11108 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11109 NL80211_ATTR_TX_RATES, &mask,
11110 dev);
11111 if (err)
11112 goto out;
11113
11114 err = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11115 out:
11116 wdev_unlock(wdev);
11117 return err;
11118 }
11119
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)11120 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11121 {
11122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11123 struct wireless_dev *wdev = info->user_ptr[1];
11124 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11125
11126 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11127 return -EINVAL;
11128
11129 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11130 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11131
11132 switch (wdev->iftype) {
11133 case NL80211_IFTYPE_STATION:
11134 case NL80211_IFTYPE_ADHOC:
11135 case NL80211_IFTYPE_P2P_CLIENT:
11136 case NL80211_IFTYPE_AP:
11137 case NL80211_IFTYPE_AP_VLAN:
11138 case NL80211_IFTYPE_MESH_POINT:
11139 case NL80211_IFTYPE_P2P_GO:
11140 case NL80211_IFTYPE_P2P_DEVICE:
11141 break;
11142 case NL80211_IFTYPE_NAN:
11143 default:
11144 return -EOPNOTSUPP;
11145 }
11146
11147 /* not much point in registering if we can't reply */
11148 if (!rdev->ops->mgmt_tx)
11149 return -EOPNOTSUPP;
11150
11151 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11152 !wiphy_ext_feature_isset(&rdev->wiphy,
11153 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11154 GENL_SET_ERR_MSG(info,
11155 "multicast RX registrations are not supported");
11156 return -EOPNOTSUPP;
11157 }
11158
11159 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11160 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11161 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11162 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11163 info->extack);
11164 }
11165
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)11166 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11167 {
11168 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11169 struct wireless_dev *wdev = info->user_ptr[1];
11170 struct cfg80211_chan_def chandef;
11171 int err;
11172 void *hdr = NULL;
11173 u64 cookie;
11174 struct sk_buff *msg = NULL;
11175 struct cfg80211_mgmt_tx_params params = {
11176 .dont_wait_for_ack =
11177 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11178 };
11179
11180 if (!info->attrs[NL80211_ATTR_FRAME])
11181 return -EINVAL;
11182
11183 if (!rdev->ops->mgmt_tx)
11184 return -EOPNOTSUPP;
11185
11186 switch (wdev->iftype) {
11187 case NL80211_IFTYPE_P2P_DEVICE:
11188 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11189 return -EINVAL;
11190 case NL80211_IFTYPE_STATION:
11191 case NL80211_IFTYPE_ADHOC:
11192 case NL80211_IFTYPE_P2P_CLIENT:
11193 case NL80211_IFTYPE_AP:
11194 case NL80211_IFTYPE_AP_VLAN:
11195 case NL80211_IFTYPE_MESH_POINT:
11196 case NL80211_IFTYPE_P2P_GO:
11197 break;
11198 case NL80211_IFTYPE_NAN:
11199 default:
11200 return -EOPNOTSUPP;
11201 }
11202
11203 if (info->attrs[NL80211_ATTR_DURATION]) {
11204 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11205 return -EINVAL;
11206 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11207
11208 /*
11209 * We should wait on the channel for at least a minimum amount
11210 * of time (10ms) but no longer than the driver supports.
11211 */
11212 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11213 params.wait > rdev->wiphy.max_remain_on_channel_duration)
11214 return -EINVAL;
11215 }
11216
11217 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11218
11219 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11220 return -EINVAL;
11221
11222 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11223
11224 /* get the channel if any has been specified, otherwise pass NULL to
11225 * the driver. The latter will use the current one
11226 */
11227 chandef.chan = NULL;
11228 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11229 err = nl80211_parse_chandef(rdev, info, &chandef);
11230 if (err)
11231 return err;
11232 }
11233
11234 if (!chandef.chan && params.offchan)
11235 return -EINVAL;
11236
11237 wdev_lock(wdev);
11238 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11239 wdev_unlock(wdev);
11240 return -EBUSY;
11241 }
11242 wdev_unlock(wdev);
11243
11244 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11245 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11246
11247 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11248 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11249 int i;
11250
11251 if (len % sizeof(u16))
11252 return -EINVAL;
11253
11254 params.n_csa_offsets = len / sizeof(u16);
11255 params.csa_offsets =
11256 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11257
11258 /* check that all the offsets fit the frame */
11259 for (i = 0; i < params.n_csa_offsets; i++) {
11260 if (params.csa_offsets[i] >= params.len)
11261 return -EINVAL;
11262 }
11263 }
11264
11265 if (!params.dont_wait_for_ack) {
11266 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11267 if (!msg)
11268 return -ENOMEM;
11269
11270 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11271 NL80211_CMD_FRAME);
11272 if (!hdr) {
11273 err = -ENOBUFS;
11274 goto free_msg;
11275 }
11276 }
11277
11278 params.chan = chandef.chan;
11279 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
11280 if (err)
11281 goto free_msg;
11282
11283 if (msg) {
11284 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11285 NL80211_ATTR_PAD))
11286 goto nla_put_failure;
11287
11288 genlmsg_end(msg, hdr);
11289 return genlmsg_reply(msg, info);
11290 }
11291
11292 return 0;
11293
11294 nla_put_failure:
11295 err = -ENOBUFS;
11296 free_msg:
11297 nlmsg_free(msg);
11298 return err;
11299 }
11300
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)11301 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11302 {
11303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11304 struct wireless_dev *wdev = info->user_ptr[1];
11305 u64 cookie;
11306
11307 if (!info->attrs[NL80211_ATTR_COOKIE])
11308 return -EINVAL;
11309
11310 if (!rdev->ops->mgmt_tx_cancel_wait)
11311 return -EOPNOTSUPP;
11312
11313 switch (wdev->iftype) {
11314 case NL80211_IFTYPE_STATION:
11315 case NL80211_IFTYPE_ADHOC:
11316 case NL80211_IFTYPE_P2P_CLIENT:
11317 case NL80211_IFTYPE_AP:
11318 case NL80211_IFTYPE_AP_VLAN:
11319 case NL80211_IFTYPE_P2P_GO:
11320 case NL80211_IFTYPE_P2P_DEVICE:
11321 break;
11322 case NL80211_IFTYPE_NAN:
11323 default:
11324 return -EOPNOTSUPP;
11325 }
11326
11327 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11328
11329 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11330 }
11331
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)11332 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11333 {
11334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11335 struct wireless_dev *wdev;
11336 struct net_device *dev = info->user_ptr[1];
11337 u8 ps_state;
11338 bool state;
11339 int err;
11340
11341 if (!info->attrs[NL80211_ATTR_PS_STATE])
11342 return -EINVAL;
11343
11344 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11345
11346 wdev = dev->ieee80211_ptr;
11347
11348 if (!rdev->ops->set_power_mgmt)
11349 return -EOPNOTSUPP;
11350
11351 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11352
11353 if (state == wdev->ps)
11354 return 0;
11355
11356 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11357 if (!err)
11358 wdev->ps = state;
11359 return err;
11360 }
11361
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)11362 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11363 {
11364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11365 enum nl80211_ps_state ps_state;
11366 struct wireless_dev *wdev;
11367 struct net_device *dev = info->user_ptr[1];
11368 struct sk_buff *msg;
11369 void *hdr;
11370 int err;
11371
11372 wdev = dev->ieee80211_ptr;
11373
11374 if (!rdev->ops->set_power_mgmt)
11375 return -EOPNOTSUPP;
11376
11377 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11378 if (!msg)
11379 return -ENOMEM;
11380
11381 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11382 NL80211_CMD_GET_POWER_SAVE);
11383 if (!hdr) {
11384 err = -ENOBUFS;
11385 goto free_msg;
11386 }
11387
11388 if (wdev->ps)
11389 ps_state = NL80211_PS_ENABLED;
11390 else
11391 ps_state = NL80211_PS_DISABLED;
11392
11393 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11394 goto nla_put_failure;
11395
11396 genlmsg_end(msg, hdr);
11397 return genlmsg_reply(msg, info);
11398
11399 nla_put_failure:
11400 err = -ENOBUFS;
11401 free_msg:
11402 nlmsg_free(msg);
11403 return err;
11404 }
11405
11406 static const struct nla_policy
11407 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11408 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11409 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11410 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11411 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11412 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11413 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11414 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11415 };
11416
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)11417 static int nl80211_set_cqm_txe(struct genl_info *info,
11418 u32 rate, u32 pkts, u32 intvl)
11419 {
11420 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11421 struct net_device *dev = info->user_ptr[1];
11422 struct wireless_dev *wdev = dev->ieee80211_ptr;
11423
11424 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11425 return -EINVAL;
11426
11427 if (!rdev->ops->set_cqm_txe_config)
11428 return -EOPNOTSUPP;
11429
11430 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11431 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11432 return -EOPNOTSUPP;
11433
11434 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11435 }
11436
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev)11437 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11438 struct net_device *dev)
11439 {
11440 struct wireless_dev *wdev = dev->ieee80211_ptr;
11441 s32 last, low, high;
11442 u32 hyst;
11443 int i, n, low_index;
11444 int err;
11445
11446 /* RSSI reporting disabled? */
11447 if (!wdev->cqm_config)
11448 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11449
11450 /*
11451 * Obtain current RSSI value if possible, if not and no RSSI threshold
11452 * event has been received yet, we should receive an event after a
11453 * connection is established and enough beacons received to calculate
11454 * the average.
11455 */
11456 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11457 rdev->ops->get_station) {
11458 struct station_info sinfo = {};
11459 u8 *mac_addr;
11460
11461 mac_addr = wdev->current_bss->pub.bssid;
11462
11463 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11464 if (err)
11465 return err;
11466
11467 cfg80211_sinfo_release_content(&sinfo);
11468 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11469 wdev->cqm_config->last_rssi_event_value =
11470 (s8) sinfo.rx_beacon_signal_avg;
11471 }
11472
11473 last = wdev->cqm_config->last_rssi_event_value;
11474 hyst = wdev->cqm_config->rssi_hyst;
11475 n = wdev->cqm_config->n_rssi_thresholds;
11476
11477 for (i = 0; i < n; i++) {
11478 i = array_index_nospec(i, n);
11479 if (last < wdev->cqm_config->rssi_thresholds[i])
11480 break;
11481 }
11482
11483 low_index = i - 1;
11484 if (low_index >= 0) {
11485 low_index = array_index_nospec(low_index, n);
11486 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11487 } else {
11488 low = S32_MIN;
11489 }
11490 if (i < n) {
11491 i = array_index_nospec(i, n);
11492 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11493 } else {
11494 high = S32_MAX;
11495 }
11496
11497 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11498 }
11499
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)11500 static int nl80211_set_cqm_rssi(struct genl_info *info,
11501 const s32 *thresholds, int n_thresholds,
11502 u32 hysteresis)
11503 {
11504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11505 struct net_device *dev = info->user_ptr[1];
11506 struct wireless_dev *wdev = dev->ieee80211_ptr;
11507 int i, err;
11508 s32 prev = S32_MIN;
11509
11510 /* Check all values negative and sorted */
11511 for (i = 0; i < n_thresholds; i++) {
11512 if (thresholds[i] > 0 || thresholds[i] <= prev)
11513 return -EINVAL;
11514
11515 prev = thresholds[i];
11516 }
11517
11518 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11519 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11520 return -EOPNOTSUPP;
11521
11522 wdev_lock(wdev);
11523 cfg80211_cqm_config_free(wdev);
11524 wdev_unlock(wdev);
11525
11526 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11527 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11528 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11529
11530 return rdev_set_cqm_rssi_config(rdev, dev,
11531 thresholds[0], hysteresis);
11532 }
11533
11534 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11535 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11536 return -EOPNOTSUPP;
11537
11538 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11539 n_thresholds = 0;
11540
11541 wdev_lock(wdev);
11542 if (n_thresholds) {
11543 struct cfg80211_cqm_config *cqm_config;
11544
11545 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11546 n_thresholds * sizeof(s32), GFP_KERNEL);
11547 if (!cqm_config) {
11548 err = -ENOMEM;
11549 goto unlock;
11550 }
11551
11552 cqm_config->rssi_hyst = hysteresis;
11553 cqm_config->n_rssi_thresholds = n_thresholds;
11554 memcpy(cqm_config->rssi_thresholds, thresholds,
11555 n_thresholds * sizeof(s32));
11556
11557 wdev->cqm_config = cqm_config;
11558 }
11559
11560 err = cfg80211_cqm_rssi_update(rdev, dev);
11561
11562 unlock:
11563 wdev_unlock(wdev);
11564
11565 return err;
11566 }
11567
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)11568 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11569 {
11570 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11571 struct nlattr *cqm;
11572 int err;
11573
11574 cqm = info->attrs[NL80211_ATTR_CQM];
11575 if (!cqm)
11576 return -EINVAL;
11577
11578 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11579 nl80211_attr_cqm_policy,
11580 info->extack);
11581 if (err)
11582 return err;
11583
11584 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11585 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11586 const s32 *thresholds =
11587 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11588 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11589 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11590
11591 if (len % 4)
11592 return -EINVAL;
11593
11594 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11595 hysteresis);
11596 }
11597
11598 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11599 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11600 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11601 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11602 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11603 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11604
11605 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11606 }
11607
11608 return -EINVAL;
11609 }
11610
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)11611 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11612 {
11613 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11614 struct net_device *dev = info->user_ptr[1];
11615 struct ocb_setup setup = {};
11616 int err;
11617
11618 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11619 if (err)
11620 return err;
11621
11622 return cfg80211_join_ocb(rdev, dev, &setup);
11623 }
11624
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)11625 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11626 {
11627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11628 struct net_device *dev = info->user_ptr[1];
11629
11630 return cfg80211_leave_ocb(rdev, dev);
11631 }
11632
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)11633 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11634 {
11635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11636 struct net_device *dev = info->user_ptr[1];
11637 struct mesh_config cfg;
11638 struct mesh_setup setup;
11639 int err;
11640
11641 /* start with default */
11642 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11643 memcpy(&setup, &default_mesh_setup, sizeof(setup));
11644
11645 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11646 /* and parse parameters if given */
11647 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11648 if (err)
11649 return err;
11650 }
11651
11652 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11653 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11654 return -EINVAL;
11655
11656 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11657 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11658
11659 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11660 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11661 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11662 return -EINVAL;
11663
11664 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11665 setup.beacon_interval =
11666 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11667
11668 err = cfg80211_validate_beacon_int(rdev,
11669 NL80211_IFTYPE_MESH_POINT,
11670 setup.beacon_interval);
11671 if (err)
11672 return err;
11673 }
11674
11675 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11676 setup.dtim_period =
11677 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11678 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11679 return -EINVAL;
11680 }
11681
11682 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11683 /* parse additional setup parameters if given */
11684 err = nl80211_parse_mesh_setup(info, &setup);
11685 if (err)
11686 return err;
11687 }
11688
11689 if (setup.user_mpm)
11690 cfg.auto_open_plinks = false;
11691
11692 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11693 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11694 if (err)
11695 return err;
11696 } else {
11697 /* __cfg80211_join_mesh() will sort it out */
11698 setup.chandef.chan = NULL;
11699 }
11700
11701 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11702 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11703 int n_rates =
11704 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11705 struct ieee80211_supported_band *sband;
11706
11707 if (!setup.chandef.chan)
11708 return -EINVAL;
11709
11710 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11711
11712 err = ieee80211_get_ratemask(sband, rates, n_rates,
11713 &setup.basic_rates);
11714 if (err)
11715 return err;
11716 }
11717
11718 if (info->attrs[NL80211_ATTR_TX_RATES]) {
11719 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11720 NL80211_ATTR_TX_RATES,
11721 &setup.beacon_rate,
11722 dev);
11723 if (err)
11724 return err;
11725
11726 if (!setup.chandef.chan)
11727 return -EINVAL;
11728
11729 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11730 &setup.beacon_rate);
11731 if (err)
11732 return err;
11733 }
11734
11735 setup.userspace_handles_dfs =
11736 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11737
11738 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11739 int r = validate_pae_over_nl80211(rdev, info);
11740
11741 if (r < 0)
11742 return r;
11743
11744 setup.control_port_over_nl80211 = true;
11745 }
11746
11747 wdev_lock(dev->ieee80211_ptr);
11748 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11749 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11750 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11751 wdev_unlock(dev->ieee80211_ptr);
11752
11753 return err;
11754 }
11755
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)11756 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11757 {
11758 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11759 struct net_device *dev = info->user_ptr[1];
11760
11761 return cfg80211_leave_mesh(rdev, dev);
11762 }
11763
11764 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)11765 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11766 struct cfg80211_registered_device *rdev)
11767 {
11768 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11769 struct nlattr *nl_pats, *nl_pat;
11770 int i, pat_len;
11771
11772 if (!wowlan->n_patterns)
11773 return 0;
11774
11775 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11776 if (!nl_pats)
11777 return -ENOBUFS;
11778
11779 for (i = 0; i < wowlan->n_patterns; i++) {
11780 nl_pat = nla_nest_start_noflag(msg, i + 1);
11781 if (!nl_pat)
11782 return -ENOBUFS;
11783 pat_len = wowlan->patterns[i].pattern_len;
11784 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11785 wowlan->patterns[i].mask) ||
11786 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11787 wowlan->patterns[i].pattern) ||
11788 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11789 wowlan->patterns[i].pkt_offset))
11790 return -ENOBUFS;
11791 nla_nest_end(msg, nl_pat);
11792 }
11793 nla_nest_end(msg, nl_pats);
11794
11795 return 0;
11796 }
11797
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)11798 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11799 struct cfg80211_wowlan_tcp *tcp)
11800 {
11801 struct nlattr *nl_tcp;
11802
11803 if (!tcp)
11804 return 0;
11805
11806 nl_tcp = nla_nest_start_noflag(msg,
11807 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11808 if (!nl_tcp)
11809 return -ENOBUFS;
11810
11811 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11812 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11813 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11814 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11815 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11816 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11817 tcp->payload_len, tcp->payload) ||
11818 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11819 tcp->data_interval) ||
11820 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11821 tcp->wake_len, tcp->wake_data) ||
11822 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11823 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11824 return -ENOBUFS;
11825
11826 if (tcp->payload_seq.len &&
11827 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11828 sizeof(tcp->payload_seq), &tcp->payload_seq))
11829 return -ENOBUFS;
11830
11831 if (tcp->payload_tok.len &&
11832 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11833 sizeof(tcp->payload_tok) + tcp->tokens_size,
11834 &tcp->payload_tok))
11835 return -ENOBUFS;
11836
11837 nla_nest_end(msg, nl_tcp);
11838
11839 return 0;
11840 }
11841
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)11842 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11843 struct cfg80211_sched_scan_request *req)
11844 {
11845 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11846 int i;
11847
11848 if (!req)
11849 return 0;
11850
11851 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11852 if (!nd)
11853 return -ENOBUFS;
11854
11855 if (req->n_scan_plans == 1 &&
11856 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11857 req->scan_plans[0].interval * 1000))
11858 return -ENOBUFS;
11859
11860 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11861 return -ENOBUFS;
11862
11863 if (req->relative_rssi_set) {
11864 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11865
11866 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11867 req->relative_rssi))
11868 return -ENOBUFS;
11869
11870 rssi_adjust.band = req->rssi_adjust.band;
11871 rssi_adjust.delta = req->rssi_adjust.delta;
11872 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11873 sizeof(rssi_adjust), &rssi_adjust))
11874 return -ENOBUFS;
11875 }
11876
11877 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11878 if (!freqs)
11879 return -ENOBUFS;
11880
11881 for (i = 0; i < req->n_channels; i++) {
11882 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11883 return -ENOBUFS;
11884 }
11885
11886 nla_nest_end(msg, freqs);
11887
11888 if (req->n_match_sets) {
11889 matches = nla_nest_start_noflag(msg,
11890 NL80211_ATTR_SCHED_SCAN_MATCH);
11891 if (!matches)
11892 return -ENOBUFS;
11893
11894 for (i = 0; i < req->n_match_sets; i++) {
11895 match = nla_nest_start_noflag(msg, i);
11896 if (!match)
11897 return -ENOBUFS;
11898
11899 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11900 req->match_sets[i].ssid.ssid_len,
11901 req->match_sets[i].ssid.ssid))
11902 return -ENOBUFS;
11903 nla_nest_end(msg, match);
11904 }
11905 nla_nest_end(msg, matches);
11906 }
11907
11908 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11909 if (!scan_plans)
11910 return -ENOBUFS;
11911
11912 for (i = 0; i < req->n_scan_plans; i++) {
11913 scan_plan = nla_nest_start_noflag(msg, i + 1);
11914 if (!scan_plan)
11915 return -ENOBUFS;
11916
11917 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11918 req->scan_plans[i].interval) ||
11919 (req->scan_plans[i].iterations &&
11920 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11921 req->scan_plans[i].iterations)))
11922 return -ENOBUFS;
11923 nla_nest_end(msg, scan_plan);
11924 }
11925 nla_nest_end(msg, scan_plans);
11926
11927 nla_nest_end(msg, nd);
11928
11929 return 0;
11930 }
11931
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)11932 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11933 {
11934 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11935 struct sk_buff *msg;
11936 void *hdr;
11937 u32 size = NLMSG_DEFAULT_SIZE;
11938
11939 if (!rdev->wiphy.wowlan)
11940 return -EOPNOTSUPP;
11941
11942 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11943 /* adjust size to have room for all the data */
11944 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11945 rdev->wiphy.wowlan_config->tcp->payload_len +
11946 rdev->wiphy.wowlan_config->tcp->wake_len +
11947 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11948 }
11949
11950 msg = nlmsg_new(size, GFP_KERNEL);
11951 if (!msg)
11952 return -ENOMEM;
11953
11954 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11955 NL80211_CMD_GET_WOWLAN);
11956 if (!hdr)
11957 goto nla_put_failure;
11958
11959 if (rdev->wiphy.wowlan_config) {
11960 struct nlattr *nl_wowlan;
11961
11962 nl_wowlan = nla_nest_start_noflag(msg,
11963 NL80211_ATTR_WOWLAN_TRIGGERS);
11964 if (!nl_wowlan)
11965 goto nla_put_failure;
11966
11967 if ((rdev->wiphy.wowlan_config->any &&
11968 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11969 (rdev->wiphy.wowlan_config->disconnect &&
11970 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11971 (rdev->wiphy.wowlan_config->magic_pkt &&
11972 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11973 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11974 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11975 (rdev->wiphy.wowlan_config->eap_identity_req &&
11976 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11977 (rdev->wiphy.wowlan_config->four_way_handshake &&
11978 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11979 (rdev->wiphy.wowlan_config->rfkill_release &&
11980 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11981 goto nla_put_failure;
11982
11983 if (nl80211_send_wowlan_patterns(msg, rdev))
11984 goto nla_put_failure;
11985
11986 if (nl80211_send_wowlan_tcp(msg,
11987 rdev->wiphy.wowlan_config->tcp))
11988 goto nla_put_failure;
11989
11990 if (nl80211_send_wowlan_nd(
11991 msg,
11992 rdev->wiphy.wowlan_config->nd_config))
11993 goto nla_put_failure;
11994
11995 nla_nest_end(msg, nl_wowlan);
11996 }
11997
11998 genlmsg_end(msg, hdr);
11999 return genlmsg_reply(msg, info);
12000
12001 nla_put_failure:
12002 nlmsg_free(msg);
12003 return -ENOBUFS;
12004 }
12005
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)12006 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12007 struct nlattr *attr,
12008 struct cfg80211_wowlan *trig)
12009 {
12010 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12011 struct cfg80211_wowlan_tcp *cfg;
12012 struct nl80211_wowlan_tcp_data_token *tok = NULL;
12013 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12014 u32 size;
12015 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12016 int err, port;
12017
12018 if (!rdev->wiphy.wowlan->tcp)
12019 return -EINVAL;
12020
12021 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12022 nl80211_wowlan_tcp_policy, NULL);
12023 if (err)
12024 return err;
12025
12026 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12027 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12028 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12029 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12030 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12031 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12032 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12033 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12034 return -EINVAL;
12035
12036 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12037 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12038 return -EINVAL;
12039
12040 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12041 rdev->wiphy.wowlan->tcp->data_interval_max ||
12042 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12043 return -EINVAL;
12044
12045 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12046 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12047 return -EINVAL;
12048
12049 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12050 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12051 return -EINVAL;
12052
12053 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12054 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12055
12056 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12057 tokens_size = tokln - sizeof(*tok);
12058
12059 if (!tok->len || tokens_size % tok->len)
12060 return -EINVAL;
12061 if (!rdev->wiphy.wowlan->tcp->tok)
12062 return -EINVAL;
12063 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12064 return -EINVAL;
12065 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12066 return -EINVAL;
12067 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12068 return -EINVAL;
12069 if (tok->offset + tok->len > data_size)
12070 return -EINVAL;
12071 }
12072
12073 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12074 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12075 if (!rdev->wiphy.wowlan->tcp->seq)
12076 return -EINVAL;
12077 if (seq->len == 0 || seq->len > 4)
12078 return -EINVAL;
12079 if (seq->len + seq->offset > data_size)
12080 return -EINVAL;
12081 }
12082
12083 size = sizeof(*cfg);
12084 size += data_size;
12085 size += wake_size + wake_mask_size;
12086 size += tokens_size;
12087
12088 cfg = kzalloc(size, GFP_KERNEL);
12089 if (!cfg)
12090 return -ENOMEM;
12091 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12092 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12093 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12094 ETH_ALEN);
12095 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12096 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12097 else
12098 port = 0;
12099 #ifdef CONFIG_INET
12100 /* allocate a socket and port for it and use it */
12101 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12102 IPPROTO_TCP, &cfg->sock, 1);
12103 if (err) {
12104 kfree(cfg);
12105 return err;
12106 }
12107 if (inet_csk_get_port(cfg->sock->sk, port)) {
12108 sock_release(cfg->sock);
12109 kfree(cfg);
12110 return -EADDRINUSE;
12111 }
12112 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12113 #else
12114 if (!port) {
12115 kfree(cfg);
12116 return -EINVAL;
12117 }
12118 cfg->src_port = port;
12119 #endif
12120
12121 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12122 cfg->payload_len = data_size;
12123 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12124 memcpy((void *)cfg->payload,
12125 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12126 data_size);
12127 if (seq)
12128 cfg->payload_seq = *seq;
12129 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12130 cfg->wake_len = wake_size;
12131 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12132 memcpy((void *)cfg->wake_data,
12133 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12134 wake_size);
12135 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12136 data_size + wake_size;
12137 memcpy((void *)cfg->wake_mask,
12138 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12139 wake_mask_size);
12140 if (tok) {
12141 cfg->tokens_size = tokens_size;
12142 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12143 }
12144
12145 trig->tcp = cfg;
12146
12147 return 0;
12148 }
12149
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)12150 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12151 const struct wiphy_wowlan_support *wowlan,
12152 struct nlattr *attr,
12153 struct cfg80211_wowlan *trig)
12154 {
12155 struct nlattr **tb;
12156 int err;
12157
12158 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12159 if (!tb)
12160 return -ENOMEM;
12161
12162 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12163 err = -EOPNOTSUPP;
12164 goto out;
12165 }
12166
12167 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12168 nl80211_policy, NULL);
12169 if (err)
12170 goto out;
12171
12172 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12173 wowlan->max_nd_match_sets);
12174 err = PTR_ERR_OR_ZERO(trig->nd_config);
12175 if (err)
12176 trig->nd_config = NULL;
12177
12178 out:
12179 kfree(tb);
12180 return err;
12181 }
12182
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)12183 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12184 {
12185 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12186 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12187 struct cfg80211_wowlan new_triggers = {};
12188 struct cfg80211_wowlan *ntrig;
12189 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12190 int err, i;
12191 bool prev_enabled = rdev->wiphy.wowlan_config;
12192 bool regular = false;
12193
12194 if (!wowlan)
12195 return -EOPNOTSUPP;
12196
12197 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12198 cfg80211_rdev_free_wowlan(rdev);
12199 rdev->wiphy.wowlan_config = NULL;
12200 goto set_wakeup;
12201 }
12202
12203 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12204 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12205 nl80211_wowlan_policy, info->extack);
12206 if (err)
12207 return err;
12208
12209 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12210 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12211 return -EINVAL;
12212 new_triggers.any = true;
12213 }
12214
12215 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12216 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12217 return -EINVAL;
12218 new_triggers.disconnect = true;
12219 regular = true;
12220 }
12221
12222 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12223 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12224 return -EINVAL;
12225 new_triggers.magic_pkt = true;
12226 regular = true;
12227 }
12228
12229 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12230 return -EINVAL;
12231
12232 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12233 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12234 return -EINVAL;
12235 new_triggers.gtk_rekey_failure = true;
12236 regular = true;
12237 }
12238
12239 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12240 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12241 return -EINVAL;
12242 new_triggers.eap_identity_req = true;
12243 regular = true;
12244 }
12245
12246 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12247 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12248 return -EINVAL;
12249 new_triggers.four_way_handshake = true;
12250 regular = true;
12251 }
12252
12253 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12254 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12255 return -EINVAL;
12256 new_triggers.rfkill_release = true;
12257 regular = true;
12258 }
12259
12260 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12261 struct nlattr *pat;
12262 int n_patterns = 0;
12263 int rem, pat_len, mask_len, pkt_offset;
12264 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12265
12266 regular = true;
12267
12268 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12269 rem)
12270 n_patterns++;
12271 if (n_patterns > wowlan->n_patterns)
12272 return -EINVAL;
12273
12274 new_triggers.patterns = kcalloc(n_patterns,
12275 sizeof(new_triggers.patterns[0]),
12276 GFP_KERNEL);
12277 if (!new_triggers.patterns)
12278 return -ENOMEM;
12279
12280 new_triggers.n_patterns = n_patterns;
12281 i = 0;
12282
12283 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12284 rem) {
12285 u8 *mask_pat;
12286
12287 err = nla_parse_nested_deprecated(pat_tb,
12288 MAX_NL80211_PKTPAT,
12289 pat,
12290 nl80211_packet_pattern_policy,
12291 info->extack);
12292 if (err)
12293 goto error;
12294
12295 err = -EINVAL;
12296 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12297 !pat_tb[NL80211_PKTPAT_PATTERN])
12298 goto error;
12299 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12300 mask_len = DIV_ROUND_UP(pat_len, 8);
12301 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12302 goto error;
12303 if (pat_len > wowlan->pattern_max_len ||
12304 pat_len < wowlan->pattern_min_len)
12305 goto error;
12306
12307 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12308 pkt_offset = 0;
12309 else
12310 pkt_offset = nla_get_u32(
12311 pat_tb[NL80211_PKTPAT_OFFSET]);
12312 if (pkt_offset > wowlan->max_pkt_offset)
12313 goto error;
12314 new_triggers.patterns[i].pkt_offset = pkt_offset;
12315
12316 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12317 if (!mask_pat) {
12318 err = -ENOMEM;
12319 goto error;
12320 }
12321 new_triggers.patterns[i].mask = mask_pat;
12322 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12323 mask_len);
12324 mask_pat += mask_len;
12325 new_triggers.patterns[i].pattern = mask_pat;
12326 new_triggers.patterns[i].pattern_len = pat_len;
12327 memcpy(mask_pat,
12328 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12329 pat_len);
12330 i++;
12331 }
12332 }
12333
12334 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12335 regular = true;
12336 err = nl80211_parse_wowlan_tcp(
12337 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12338 &new_triggers);
12339 if (err)
12340 goto error;
12341 }
12342
12343 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12344 regular = true;
12345 err = nl80211_parse_wowlan_nd(
12346 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12347 &new_triggers);
12348 if (err)
12349 goto error;
12350 }
12351
12352 /* The 'any' trigger means the device continues operating more or less
12353 * as in its normal operation mode and wakes up the host on most of the
12354 * normal interrupts (like packet RX, ...)
12355 * It therefore makes little sense to combine with the more constrained
12356 * wakeup trigger modes.
12357 */
12358 if (new_triggers.any && regular) {
12359 err = -EINVAL;
12360 goto error;
12361 }
12362
12363 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12364 if (!ntrig) {
12365 err = -ENOMEM;
12366 goto error;
12367 }
12368 cfg80211_rdev_free_wowlan(rdev);
12369 rdev->wiphy.wowlan_config = ntrig;
12370
12371 set_wakeup:
12372 if (rdev->ops->set_wakeup &&
12373 prev_enabled != !!rdev->wiphy.wowlan_config)
12374 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12375
12376 return 0;
12377 error:
12378 for (i = 0; i < new_triggers.n_patterns; i++)
12379 kfree(new_triggers.patterns[i].mask);
12380 kfree(new_triggers.patterns);
12381 if (new_triggers.tcp && new_triggers.tcp->sock)
12382 sock_release(new_triggers.tcp->sock);
12383 kfree(new_triggers.tcp);
12384 kfree(new_triggers.nd_config);
12385 return err;
12386 }
12387 #endif
12388
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)12389 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12390 struct cfg80211_registered_device *rdev)
12391 {
12392 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12393 int i, j, pat_len;
12394 struct cfg80211_coalesce_rules *rule;
12395
12396 if (!rdev->coalesce->n_rules)
12397 return 0;
12398
12399 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12400 if (!nl_rules)
12401 return -ENOBUFS;
12402
12403 for (i = 0; i < rdev->coalesce->n_rules; i++) {
12404 nl_rule = nla_nest_start_noflag(msg, i + 1);
12405 if (!nl_rule)
12406 return -ENOBUFS;
12407
12408 rule = &rdev->coalesce->rules[i];
12409 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12410 rule->delay))
12411 return -ENOBUFS;
12412
12413 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12414 rule->condition))
12415 return -ENOBUFS;
12416
12417 nl_pats = nla_nest_start_noflag(msg,
12418 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12419 if (!nl_pats)
12420 return -ENOBUFS;
12421
12422 for (j = 0; j < rule->n_patterns; j++) {
12423 nl_pat = nla_nest_start_noflag(msg, j + 1);
12424 if (!nl_pat)
12425 return -ENOBUFS;
12426 pat_len = rule->patterns[j].pattern_len;
12427 if (nla_put(msg, NL80211_PKTPAT_MASK,
12428 DIV_ROUND_UP(pat_len, 8),
12429 rule->patterns[j].mask) ||
12430 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12431 rule->patterns[j].pattern) ||
12432 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12433 rule->patterns[j].pkt_offset))
12434 return -ENOBUFS;
12435 nla_nest_end(msg, nl_pat);
12436 }
12437 nla_nest_end(msg, nl_pats);
12438 nla_nest_end(msg, nl_rule);
12439 }
12440 nla_nest_end(msg, nl_rules);
12441
12442 return 0;
12443 }
12444
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)12445 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12446 {
12447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12448 struct sk_buff *msg;
12449 void *hdr;
12450
12451 if (!rdev->wiphy.coalesce)
12452 return -EOPNOTSUPP;
12453
12454 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12455 if (!msg)
12456 return -ENOMEM;
12457
12458 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12459 NL80211_CMD_GET_COALESCE);
12460 if (!hdr)
12461 goto nla_put_failure;
12462
12463 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12464 goto nla_put_failure;
12465
12466 genlmsg_end(msg, hdr);
12467 return genlmsg_reply(msg, info);
12468
12469 nla_put_failure:
12470 nlmsg_free(msg);
12471 return -ENOBUFS;
12472 }
12473
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)12474 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12475 {
12476 struct cfg80211_coalesce *coalesce = rdev->coalesce;
12477 int i, j;
12478 struct cfg80211_coalesce_rules *rule;
12479
12480 if (!coalesce)
12481 return;
12482
12483 for (i = 0; i < coalesce->n_rules; i++) {
12484 rule = &coalesce->rules[i];
12485 for (j = 0; j < rule->n_patterns; j++)
12486 kfree(rule->patterns[j].mask);
12487 kfree(rule->patterns);
12488 }
12489 kfree(coalesce->rules);
12490 kfree(coalesce);
12491 rdev->coalesce = NULL;
12492 }
12493
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)12494 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12495 struct nlattr *rule,
12496 struct cfg80211_coalesce_rules *new_rule)
12497 {
12498 int err, i;
12499 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12500 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12501 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12502 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12503
12504 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12505 rule, nl80211_coalesce_policy, NULL);
12506 if (err)
12507 return err;
12508
12509 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12510 new_rule->delay =
12511 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12512 if (new_rule->delay > coalesce->max_delay)
12513 return -EINVAL;
12514
12515 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12516 new_rule->condition =
12517 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12518
12519 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12520 return -EINVAL;
12521
12522 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12523 rem)
12524 n_patterns++;
12525 if (n_patterns > coalesce->n_patterns)
12526 return -EINVAL;
12527
12528 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12529 GFP_KERNEL);
12530 if (!new_rule->patterns)
12531 return -ENOMEM;
12532
12533 new_rule->n_patterns = n_patterns;
12534 i = 0;
12535
12536 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12537 rem) {
12538 u8 *mask_pat;
12539
12540 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12541 pat,
12542 nl80211_packet_pattern_policy,
12543 NULL);
12544 if (err)
12545 return err;
12546
12547 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12548 !pat_tb[NL80211_PKTPAT_PATTERN])
12549 return -EINVAL;
12550 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12551 mask_len = DIV_ROUND_UP(pat_len, 8);
12552 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12553 return -EINVAL;
12554 if (pat_len > coalesce->pattern_max_len ||
12555 pat_len < coalesce->pattern_min_len)
12556 return -EINVAL;
12557
12558 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12559 pkt_offset = 0;
12560 else
12561 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12562 if (pkt_offset > coalesce->max_pkt_offset)
12563 return -EINVAL;
12564 new_rule->patterns[i].pkt_offset = pkt_offset;
12565
12566 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12567 if (!mask_pat)
12568 return -ENOMEM;
12569
12570 new_rule->patterns[i].mask = mask_pat;
12571 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12572 mask_len);
12573
12574 mask_pat += mask_len;
12575 new_rule->patterns[i].pattern = mask_pat;
12576 new_rule->patterns[i].pattern_len = pat_len;
12577 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12578 pat_len);
12579 i++;
12580 }
12581
12582 return 0;
12583 }
12584
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)12585 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12586 {
12587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12588 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12589 struct cfg80211_coalesce new_coalesce = {};
12590 struct cfg80211_coalesce *n_coalesce;
12591 int err, rem_rule, n_rules = 0, i, j;
12592 struct nlattr *rule;
12593 struct cfg80211_coalesce_rules *tmp_rule;
12594
12595 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12596 return -EOPNOTSUPP;
12597
12598 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12599 cfg80211_rdev_free_coalesce(rdev);
12600 rdev_set_coalesce(rdev, NULL);
12601 return 0;
12602 }
12603
12604 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12605 rem_rule)
12606 n_rules++;
12607 if (n_rules > coalesce->n_rules)
12608 return -EINVAL;
12609
12610 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12611 GFP_KERNEL);
12612 if (!new_coalesce.rules)
12613 return -ENOMEM;
12614
12615 new_coalesce.n_rules = n_rules;
12616 i = 0;
12617
12618 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12619 rem_rule) {
12620 err = nl80211_parse_coalesce_rule(rdev, rule,
12621 &new_coalesce.rules[i]);
12622 if (err)
12623 goto error;
12624
12625 i++;
12626 }
12627
12628 err = rdev_set_coalesce(rdev, &new_coalesce);
12629 if (err)
12630 goto error;
12631
12632 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12633 if (!n_coalesce) {
12634 err = -ENOMEM;
12635 goto error;
12636 }
12637 cfg80211_rdev_free_coalesce(rdev);
12638 rdev->coalesce = n_coalesce;
12639
12640 return 0;
12641 error:
12642 for (i = 0; i < new_coalesce.n_rules; i++) {
12643 tmp_rule = &new_coalesce.rules[i];
12644 if (!tmp_rule)
12645 continue;
12646 for (j = 0; j < tmp_rule->n_patterns; j++)
12647 kfree(tmp_rule->patterns[j].mask);
12648 kfree(tmp_rule->patterns);
12649 }
12650 kfree(new_coalesce.rules);
12651
12652 return err;
12653 }
12654
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)12655 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12656 {
12657 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12658 struct net_device *dev = info->user_ptr[1];
12659 struct wireless_dev *wdev = dev->ieee80211_ptr;
12660 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12661 struct cfg80211_gtk_rekey_data rekey_data = {};
12662 int err;
12663
12664 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12665 return -EINVAL;
12666
12667 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12668 info->attrs[NL80211_ATTR_REKEY_DATA],
12669 nl80211_rekey_policy, info->extack);
12670 if (err)
12671 return err;
12672
12673 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12674 !tb[NL80211_REKEY_DATA_KCK])
12675 return -EINVAL;
12676 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12677 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12678 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12679 return -ERANGE;
12680 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12681 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12682 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN))
12683 return -ERANGE;
12684
12685 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12686 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12687 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12688 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12689 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12690 if (tb[NL80211_REKEY_DATA_AKM])
12691 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12692
12693 wdev_lock(wdev);
12694 if (!wdev->current_bss) {
12695 err = -ENOTCONN;
12696 goto out;
12697 }
12698
12699 if (!rdev->ops->set_rekey_data) {
12700 err = -EOPNOTSUPP;
12701 goto out;
12702 }
12703
12704 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12705 out:
12706 wdev_unlock(wdev);
12707 return err;
12708 }
12709
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)12710 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12711 struct genl_info *info)
12712 {
12713 struct net_device *dev = info->user_ptr[1];
12714 struct wireless_dev *wdev = dev->ieee80211_ptr;
12715
12716 if (wdev->iftype != NL80211_IFTYPE_AP &&
12717 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12718 return -EINVAL;
12719
12720 if (wdev->ap_unexpected_nlportid)
12721 return -EBUSY;
12722
12723 wdev->ap_unexpected_nlportid = info->snd_portid;
12724 return 0;
12725 }
12726
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)12727 static int nl80211_probe_client(struct sk_buff *skb,
12728 struct genl_info *info)
12729 {
12730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12731 struct net_device *dev = info->user_ptr[1];
12732 struct wireless_dev *wdev = dev->ieee80211_ptr;
12733 struct sk_buff *msg;
12734 void *hdr;
12735 const u8 *addr;
12736 u64 cookie;
12737 int err;
12738
12739 if (wdev->iftype != NL80211_IFTYPE_AP &&
12740 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12741 return -EOPNOTSUPP;
12742
12743 if (!info->attrs[NL80211_ATTR_MAC])
12744 return -EINVAL;
12745
12746 if (!rdev->ops->probe_client)
12747 return -EOPNOTSUPP;
12748
12749 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12750 if (!msg)
12751 return -ENOMEM;
12752
12753 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12754 NL80211_CMD_PROBE_CLIENT);
12755 if (!hdr) {
12756 err = -ENOBUFS;
12757 goto free_msg;
12758 }
12759
12760 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12761
12762 err = rdev_probe_client(rdev, dev, addr, &cookie);
12763 if (err)
12764 goto free_msg;
12765
12766 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12767 NL80211_ATTR_PAD))
12768 goto nla_put_failure;
12769
12770 genlmsg_end(msg, hdr);
12771
12772 return genlmsg_reply(msg, info);
12773
12774 nla_put_failure:
12775 err = -ENOBUFS;
12776 free_msg:
12777 nlmsg_free(msg);
12778 return err;
12779 }
12780
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)12781 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12782 {
12783 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12784 struct cfg80211_beacon_registration *reg, *nreg;
12785 int rv;
12786
12787 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12788 return -EOPNOTSUPP;
12789
12790 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12791 if (!nreg)
12792 return -ENOMEM;
12793
12794 /* First, check if already registered. */
12795 spin_lock_bh(&rdev->beacon_registrations_lock);
12796 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12797 if (reg->nlportid == info->snd_portid) {
12798 rv = -EALREADY;
12799 goto out_err;
12800 }
12801 }
12802 /* Add it to the list */
12803 nreg->nlportid = info->snd_portid;
12804 list_add(&nreg->list, &rdev->beacon_registrations);
12805
12806 spin_unlock_bh(&rdev->beacon_registrations_lock);
12807
12808 return 0;
12809 out_err:
12810 spin_unlock_bh(&rdev->beacon_registrations_lock);
12811 kfree(nreg);
12812 return rv;
12813 }
12814
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)12815 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12816 {
12817 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12818 struct wireless_dev *wdev = info->user_ptr[1];
12819 int err;
12820
12821 if (!rdev->ops->start_p2p_device)
12822 return -EOPNOTSUPP;
12823
12824 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12825 return -EOPNOTSUPP;
12826
12827 if (wdev_running(wdev))
12828 return 0;
12829
12830 if (rfkill_blocked(rdev->rfkill))
12831 return -ERFKILL;
12832
12833 err = rdev_start_p2p_device(rdev, wdev);
12834 if (err)
12835 return err;
12836
12837 wdev->is_running = true;
12838 rdev->opencount++;
12839
12840 return 0;
12841 }
12842
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)12843 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12844 {
12845 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12846 struct wireless_dev *wdev = info->user_ptr[1];
12847
12848 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12849 return -EOPNOTSUPP;
12850
12851 if (!rdev->ops->stop_p2p_device)
12852 return -EOPNOTSUPP;
12853
12854 cfg80211_stop_p2p_device(rdev, wdev);
12855
12856 return 0;
12857 }
12858
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)12859 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12860 {
12861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12862 struct wireless_dev *wdev = info->user_ptr[1];
12863 struct cfg80211_nan_conf conf = {};
12864 int err;
12865
12866 if (wdev->iftype != NL80211_IFTYPE_NAN)
12867 return -EOPNOTSUPP;
12868
12869 if (wdev_running(wdev))
12870 return -EEXIST;
12871
12872 if (rfkill_blocked(rdev->rfkill))
12873 return -ERFKILL;
12874
12875 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12876 return -EINVAL;
12877
12878 conf.master_pref =
12879 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12880
12881 if (info->attrs[NL80211_ATTR_BANDS]) {
12882 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12883
12884 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12885 return -EOPNOTSUPP;
12886
12887 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12888 return -EINVAL;
12889
12890 conf.bands = bands;
12891 }
12892
12893 err = rdev_start_nan(rdev, wdev, &conf);
12894 if (err)
12895 return err;
12896
12897 wdev->is_running = true;
12898 rdev->opencount++;
12899
12900 return 0;
12901 }
12902
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)12903 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12904 {
12905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12906 struct wireless_dev *wdev = info->user_ptr[1];
12907
12908 if (wdev->iftype != NL80211_IFTYPE_NAN)
12909 return -EOPNOTSUPP;
12910
12911 cfg80211_stop_nan(rdev, wdev);
12912
12913 return 0;
12914 }
12915
validate_nan_filter(struct nlattr * filter_attr)12916 static int validate_nan_filter(struct nlattr *filter_attr)
12917 {
12918 struct nlattr *attr;
12919 int len = 0, n_entries = 0, rem;
12920
12921 nla_for_each_nested(attr, filter_attr, rem) {
12922 len += nla_len(attr);
12923 n_entries++;
12924 }
12925
12926 if (len >= U8_MAX)
12927 return -EINVAL;
12928
12929 return n_entries;
12930 }
12931
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)12932 static int handle_nan_filter(struct nlattr *attr_filter,
12933 struct cfg80211_nan_func *func,
12934 bool tx)
12935 {
12936 struct nlattr *attr;
12937 int n_entries, rem, i;
12938 struct cfg80211_nan_func_filter *filter;
12939
12940 n_entries = validate_nan_filter(attr_filter);
12941 if (n_entries < 0)
12942 return n_entries;
12943
12944 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12945
12946 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12947 if (!filter)
12948 return -ENOMEM;
12949
12950 i = 0;
12951 nla_for_each_nested(attr, attr_filter, rem) {
12952 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12953 if (!filter[i].filter)
12954 goto err;
12955
12956 filter[i].len = nla_len(attr);
12957 i++;
12958 }
12959 if (tx) {
12960 func->num_tx_filters = n_entries;
12961 func->tx_filters = filter;
12962 } else {
12963 func->num_rx_filters = n_entries;
12964 func->rx_filters = filter;
12965 }
12966
12967 return 0;
12968
12969 err:
12970 i = 0;
12971 nla_for_each_nested(attr, attr_filter, rem) {
12972 kfree(filter[i].filter);
12973 i++;
12974 }
12975 kfree(filter);
12976 return -ENOMEM;
12977 }
12978
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)12979 static int nl80211_nan_add_func(struct sk_buff *skb,
12980 struct genl_info *info)
12981 {
12982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12983 struct wireless_dev *wdev = info->user_ptr[1];
12984 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12985 struct cfg80211_nan_func *func;
12986 struct sk_buff *msg = NULL;
12987 void *hdr = NULL;
12988 int err = 0;
12989
12990 if (wdev->iftype != NL80211_IFTYPE_NAN)
12991 return -EOPNOTSUPP;
12992
12993 if (!wdev_running(wdev))
12994 return -ENOTCONN;
12995
12996 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12997 return -EINVAL;
12998
12999 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13000 info->attrs[NL80211_ATTR_NAN_FUNC],
13001 nl80211_nan_func_policy,
13002 info->extack);
13003 if (err)
13004 return err;
13005
13006 func = kzalloc(sizeof(*func), GFP_KERNEL);
13007 if (!func)
13008 return -ENOMEM;
13009
13010 func->cookie = cfg80211_assign_cookie(rdev);
13011
13012 if (!tb[NL80211_NAN_FUNC_TYPE]) {
13013 err = -EINVAL;
13014 goto out;
13015 }
13016
13017
13018 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13019
13020 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13021 err = -EINVAL;
13022 goto out;
13023 }
13024
13025 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13026 sizeof(func->service_id));
13027
13028 func->close_range =
13029 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13030
13031 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13032 func->serv_spec_info_len =
13033 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13034 func->serv_spec_info =
13035 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13036 func->serv_spec_info_len,
13037 GFP_KERNEL);
13038 if (!func->serv_spec_info) {
13039 err = -ENOMEM;
13040 goto out;
13041 }
13042 }
13043
13044 if (tb[NL80211_NAN_FUNC_TTL])
13045 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13046
13047 switch (func->type) {
13048 case NL80211_NAN_FUNC_PUBLISH:
13049 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13050 err = -EINVAL;
13051 goto out;
13052 }
13053
13054 func->publish_type =
13055 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13056 func->publish_bcast =
13057 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13058
13059 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13060 func->publish_bcast) {
13061 err = -EINVAL;
13062 goto out;
13063 }
13064 break;
13065 case NL80211_NAN_FUNC_SUBSCRIBE:
13066 func->subscribe_active =
13067 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13068 break;
13069 case NL80211_NAN_FUNC_FOLLOW_UP:
13070 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13071 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13072 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13073 err = -EINVAL;
13074 goto out;
13075 }
13076
13077 func->followup_id =
13078 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13079 func->followup_reqid =
13080 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13081 memcpy(func->followup_dest.addr,
13082 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13083 sizeof(func->followup_dest.addr));
13084 if (func->ttl) {
13085 err = -EINVAL;
13086 goto out;
13087 }
13088 break;
13089 default:
13090 err = -EINVAL;
13091 goto out;
13092 }
13093
13094 if (tb[NL80211_NAN_FUNC_SRF]) {
13095 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13096
13097 err = nla_parse_nested_deprecated(srf_tb,
13098 NL80211_NAN_SRF_ATTR_MAX,
13099 tb[NL80211_NAN_FUNC_SRF],
13100 nl80211_nan_srf_policy,
13101 info->extack);
13102 if (err)
13103 goto out;
13104
13105 func->srf_include =
13106 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13107
13108 if (srf_tb[NL80211_NAN_SRF_BF]) {
13109 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13110 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13111 err = -EINVAL;
13112 goto out;
13113 }
13114
13115 func->srf_bf_len =
13116 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13117 func->srf_bf =
13118 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13119 func->srf_bf_len, GFP_KERNEL);
13120 if (!func->srf_bf) {
13121 err = -ENOMEM;
13122 goto out;
13123 }
13124
13125 func->srf_bf_idx =
13126 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13127 } else {
13128 struct nlattr *attr, *mac_attr =
13129 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13130 int n_entries, rem, i = 0;
13131
13132 if (!mac_attr) {
13133 err = -EINVAL;
13134 goto out;
13135 }
13136
13137 n_entries = validate_acl_mac_addrs(mac_attr);
13138 if (n_entries <= 0) {
13139 err = -EINVAL;
13140 goto out;
13141 }
13142
13143 func->srf_num_macs = n_entries;
13144 func->srf_macs =
13145 kcalloc(n_entries, sizeof(*func->srf_macs),
13146 GFP_KERNEL);
13147 if (!func->srf_macs) {
13148 err = -ENOMEM;
13149 goto out;
13150 }
13151
13152 nla_for_each_nested(attr, mac_attr, rem)
13153 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13154 sizeof(*func->srf_macs));
13155 }
13156 }
13157
13158 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13159 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13160 func, true);
13161 if (err)
13162 goto out;
13163 }
13164
13165 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13166 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13167 func, false);
13168 if (err)
13169 goto out;
13170 }
13171
13172 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13173 if (!msg) {
13174 err = -ENOMEM;
13175 goto out;
13176 }
13177
13178 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13179 NL80211_CMD_ADD_NAN_FUNCTION);
13180 /* This can't really happen - we just allocated 4KB */
13181 if (WARN_ON(!hdr)) {
13182 err = -ENOMEM;
13183 goto out;
13184 }
13185
13186 err = rdev_add_nan_func(rdev, wdev, func);
13187 out:
13188 if (err < 0) {
13189 cfg80211_free_nan_func(func);
13190 nlmsg_free(msg);
13191 return err;
13192 }
13193
13194 /* propagate the instance id and cookie to userspace */
13195 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13196 NL80211_ATTR_PAD))
13197 goto nla_put_failure;
13198
13199 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13200 if (!func_attr)
13201 goto nla_put_failure;
13202
13203 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13204 func->instance_id))
13205 goto nla_put_failure;
13206
13207 nla_nest_end(msg, func_attr);
13208
13209 genlmsg_end(msg, hdr);
13210 return genlmsg_reply(msg, info);
13211
13212 nla_put_failure:
13213 nlmsg_free(msg);
13214 return -ENOBUFS;
13215 }
13216
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)13217 static int nl80211_nan_del_func(struct sk_buff *skb,
13218 struct genl_info *info)
13219 {
13220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13221 struct wireless_dev *wdev = info->user_ptr[1];
13222 u64 cookie;
13223
13224 if (wdev->iftype != NL80211_IFTYPE_NAN)
13225 return -EOPNOTSUPP;
13226
13227 if (!wdev_running(wdev))
13228 return -ENOTCONN;
13229
13230 if (!info->attrs[NL80211_ATTR_COOKIE])
13231 return -EINVAL;
13232
13233 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13234
13235 rdev_del_nan_func(rdev, wdev, cookie);
13236
13237 return 0;
13238 }
13239
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)13240 static int nl80211_nan_change_config(struct sk_buff *skb,
13241 struct genl_info *info)
13242 {
13243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13244 struct wireless_dev *wdev = info->user_ptr[1];
13245 struct cfg80211_nan_conf conf = {};
13246 u32 changed = 0;
13247
13248 if (wdev->iftype != NL80211_IFTYPE_NAN)
13249 return -EOPNOTSUPP;
13250
13251 if (!wdev_running(wdev))
13252 return -ENOTCONN;
13253
13254 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13255 conf.master_pref =
13256 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13257 if (conf.master_pref <= 1 || conf.master_pref == 255)
13258 return -EINVAL;
13259
13260 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13261 }
13262
13263 if (info->attrs[NL80211_ATTR_BANDS]) {
13264 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13265
13266 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13267 return -EOPNOTSUPP;
13268
13269 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13270 return -EINVAL;
13271
13272 conf.bands = bands;
13273 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13274 }
13275
13276 if (!changed)
13277 return -EINVAL;
13278
13279 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13280 }
13281
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)13282 void cfg80211_nan_match(struct wireless_dev *wdev,
13283 struct cfg80211_nan_match_params *match, gfp_t gfp)
13284 {
13285 struct wiphy *wiphy = wdev->wiphy;
13286 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13287 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13288 struct sk_buff *msg;
13289 void *hdr;
13290
13291 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13292 return;
13293
13294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13295 if (!msg)
13296 return;
13297
13298 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13299 if (!hdr) {
13300 nlmsg_free(msg);
13301 return;
13302 }
13303
13304 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13305 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13306 wdev->netdev->ifindex)) ||
13307 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13308 NL80211_ATTR_PAD))
13309 goto nla_put_failure;
13310
13311 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13312 NL80211_ATTR_PAD) ||
13313 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13314 goto nla_put_failure;
13315
13316 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13317 if (!match_attr)
13318 goto nla_put_failure;
13319
13320 local_func_attr = nla_nest_start_noflag(msg,
13321 NL80211_NAN_MATCH_FUNC_LOCAL);
13322 if (!local_func_attr)
13323 goto nla_put_failure;
13324
13325 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13326 goto nla_put_failure;
13327
13328 nla_nest_end(msg, local_func_attr);
13329
13330 peer_func_attr = nla_nest_start_noflag(msg,
13331 NL80211_NAN_MATCH_FUNC_PEER);
13332 if (!peer_func_attr)
13333 goto nla_put_failure;
13334
13335 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13336 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13337 goto nla_put_failure;
13338
13339 if (match->info && match->info_len &&
13340 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13341 match->info))
13342 goto nla_put_failure;
13343
13344 nla_nest_end(msg, peer_func_attr);
13345 nla_nest_end(msg, match_attr);
13346 genlmsg_end(msg, hdr);
13347
13348 if (!wdev->owner_nlportid)
13349 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13350 msg, 0, NL80211_MCGRP_NAN, gfp);
13351 else
13352 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13353 wdev->owner_nlportid);
13354
13355 return;
13356
13357 nla_put_failure:
13358 nlmsg_free(msg);
13359 }
13360 EXPORT_SYMBOL(cfg80211_nan_match);
13361
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)13362 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13363 u8 inst_id,
13364 enum nl80211_nan_func_term_reason reason,
13365 u64 cookie, gfp_t gfp)
13366 {
13367 struct wiphy *wiphy = wdev->wiphy;
13368 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13369 struct sk_buff *msg;
13370 struct nlattr *func_attr;
13371 void *hdr;
13372
13373 if (WARN_ON(!inst_id))
13374 return;
13375
13376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13377 if (!msg)
13378 return;
13379
13380 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13381 if (!hdr) {
13382 nlmsg_free(msg);
13383 return;
13384 }
13385
13386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13387 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13388 wdev->netdev->ifindex)) ||
13389 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13390 NL80211_ATTR_PAD))
13391 goto nla_put_failure;
13392
13393 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13394 NL80211_ATTR_PAD))
13395 goto nla_put_failure;
13396
13397 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13398 if (!func_attr)
13399 goto nla_put_failure;
13400
13401 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13402 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13403 goto nla_put_failure;
13404
13405 nla_nest_end(msg, func_attr);
13406 genlmsg_end(msg, hdr);
13407
13408 if (!wdev->owner_nlportid)
13409 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13410 msg, 0, NL80211_MCGRP_NAN, gfp);
13411 else
13412 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13413 wdev->owner_nlportid);
13414
13415 return;
13416
13417 nla_put_failure:
13418 nlmsg_free(msg);
13419 }
13420 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13421
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)13422 static int nl80211_get_protocol_features(struct sk_buff *skb,
13423 struct genl_info *info)
13424 {
13425 void *hdr;
13426 struct sk_buff *msg;
13427
13428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13429 if (!msg)
13430 return -ENOMEM;
13431
13432 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13433 NL80211_CMD_GET_PROTOCOL_FEATURES);
13434 if (!hdr)
13435 goto nla_put_failure;
13436
13437 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13438 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13439 goto nla_put_failure;
13440
13441 genlmsg_end(msg, hdr);
13442 return genlmsg_reply(msg, info);
13443
13444 nla_put_failure:
13445 kfree_skb(msg);
13446 return -ENOBUFS;
13447 }
13448
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)13449 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13450 {
13451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13452 struct cfg80211_update_ft_ies_params ft_params;
13453 struct net_device *dev = info->user_ptr[1];
13454
13455 if (!rdev->ops->update_ft_ies)
13456 return -EOPNOTSUPP;
13457
13458 if (!info->attrs[NL80211_ATTR_MDID] ||
13459 !info->attrs[NL80211_ATTR_IE])
13460 return -EINVAL;
13461
13462 memset(&ft_params, 0, sizeof(ft_params));
13463 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13464 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13465 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13466
13467 return rdev_update_ft_ies(rdev, dev, &ft_params);
13468 }
13469
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)13470 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13471 struct genl_info *info)
13472 {
13473 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13474 struct wireless_dev *wdev = info->user_ptr[1];
13475 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13476 u16 duration;
13477 int ret;
13478
13479 if (!rdev->ops->crit_proto_start)
13480 return -EOPNOTSUPP;
13481
13482 if (WARN_ON(!rdev->ops->crit_proto_stop))
13483 return -EINVAL;
13484
13485 if (rdev->crit_proto_nlportid)
13486 return -EBUSY;
13487
13488 /* determine protocol if provided */
13489 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13490 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13491
13492 if (proto >= NUM_NL80211_CRIT_PROTO)
13493 return -EINVAL;
13494
13495 /* timeout must be provided */
13496 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13497 return -EINVAL;
13498
13499 duration =
13500 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13501
13502 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13503 if (!ret)
13504 rdev->crit_proto_nlportid = info->snd_portid;
13505
13506 return ret;
13507 }
13508
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)13509 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13510 struct genl_info *info)
13511 {
13512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13513 struct wireless_dev *wdev = info->user_ptr[1];
13514
13515 if (!rdev->ops->crit_proto_stop)
13516 return -EOPNOTSUPP;
13517
13518 if (rdev->crit_proto_nlportid) {
13519 rdev->crit_proto_nlportid = 0;
13520 rdev_crit_proto_stop(rdev, wdev);
13521 }
13522 return 0;
13523 }
13524
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)13525 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13526 struct nlattr *attr,
13527 struct netlink_ext_ack *extack)
13528 {
13529 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13530 if (attr->nla_type & NLA_F_NESTED) {
13531 NL_SET_ERR_MSG_ATTR(extack, attr,
13532 "unexpected nested data");
13533 return -EINVAL;
13534 }
13535
13536 return 0;
13537 }
13538
13539 if (!(attr->nla_type & NLA_F_NESTED)) {
13540 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13541 return -EINVAL;
13542 }
13543
13544 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13545 }
13546
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)13547 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13548 {
13549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13550 struct wireless_dev *wdev =
13551 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13552 int i, err;
13553 u32 vid, subcmd;
13554
13555 if (!rdev->wiphy.vendor_commands)
13556 return -EOPNOTSUPP;
13557
13558 if (IS_ERR(wdev)) {
13559 err = PTR_ERR(wdev);
13560 if (err != -EINVAL)
13561 return err;
13562 wdev = NULL;
13563 } else if (wdev->wiphy != &rdev->wiphy) {
13564 return -EINVAL;
13565 }
13566
13567 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13568 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13569 return -EINVAL;
13570
13571 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13572 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13573 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13574 const struct wiphy_vendor_command *vcmd;
13575 void *data = NULL;
13576 int len = 0;
13577
13578 vcmd = &rdev->wiphy.vendor_commands[i];
13579
13580 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13581 continue;
13582
13583 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13584 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13585 if (!wdev)
13586 return -EINVAL;
13587 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13588 !wdev->netdev)
13589 return -EINVAL;
13590
13591 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13592 if (!wdev_running(wdev))
13593 return -ENETDOWN;
13594 }
13595 } else {
13596 wdev = NULL;
13597 }
13598
13599 if (!vcmd->doit)
13600 return -EOPNOTSUPP;
13601
13602 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13603 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13604 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13605
13606 err = nl80211_vendor_check_policy(vcmd,
13607 info->attrs[NL80211_ATTR_VENDOR_DATA],
13608 info->extack);
13609 if (err)
13610 return err;
13611 }
13612
13613 rdev->cur_cmd_info = info;
13614 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13615 rdev->cur_cmd_info = NULL;
13616 return err;
13617 }
13618
13619 return -EOPNOTSUPP;
13620 }
13621
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)13622 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13623 struct netlink_callback *cb,
13624 struct cfg80211_registered_device **rdev,
13625 struct wireless_dev **wdev)
13626 {
13627 struct nlattr **attrbuf;
13628 u32 vid, subcmd;
13629 unsigned int i;
13630 int vcmd_idx = -1;
13631 int err;
13632 void *data = NULL;
13633 unsigned int data_len = 0;
13634
13635 if (cb->args[0]) {
13636 /* subtract the 1 again here */
13637 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13638 struct wireless_dev *tmp;
13639
13640 if (!wiphy)
13641 return -ENODEV;
13642 *rdev = wiphy_to_rdev(wiphy);
13643 *wdev = NULL;
13644
13645 if (cb->args[1]) {
13646 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13647 if (tmp->identifier == cb->args[1] - 1) {
13648 *wdev = tmp;
13649 break;
13650 }
13651 }
13652 }
13653
13654 /* keep rtnl locked in successful case */
13655 return 0;
13656 }
13657
13658 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13659 if (!attrbuf)
13660 return -ENOMEM;
13661
13662 err = nlmsg_parse_deprecated(cb->nlh,
13663 GENL_HDRLEN + nl80211_fam.hdrsize,
13664 attrbuf, nl80211_fam.maxattr,
13665 nl80211_policy, NULL);
13666 if (err)
13667 goto out;
13668
13669 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13670 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13671 err = -EINVAL;
13672 goto out;
13673 }
13674
13675 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13676 if (IS_ERR(*wdev))
13677 *wdev = NULL;
13678
13679 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13680 if (IS_ERR(*rdev)) {
13681 err = PTR_ERR(*rdev);
13682 goto out;
13683 }
13684
13685 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13686 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13687
13688 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13689 const struct wiphy_vendor_command *vcmd;
13690
13691 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13692
13693 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13694 continue;
13695
13696 if (!vcmd->dumpit) {
13697 err = -EOPNOTSUPP;
13698 goto out;
13699 }
13700
13701 vcmd_idx = i;
13702 break;
13703 }
13704
13705 if (vcmd_idx < 0) {
13706 err = -EOPNOTSUPP;
13707 goto out;
13708 }
13709
13710 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13711 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13712 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13713
13714 err = nl80211_vendor_check_policy(
13715 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13716 attrbuf[NL80211_ATTR_VENDOR_DATA],
13717 cb->extack);
13718 if (err)
13719 goto out;
13720 }
13721
13722 /* 0 is the first index - add 1 to parse only once */
13723 cb->args[0] = (*rdev)->wiphy_idx + 1;
13724 /* add 1 to know if it was NULL */
13725 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13726 cb->args[2] = vcmd_idx;
13727 cb->args[3] = (unsigned long)data;
13728 cb->args[4] = data_len;
13729
13730 /* keep rtnl locked in successful case */
13731 err = 0;
13732 out:
13733 kfree(attrbuf);
13734 return err;
13735 }
13736
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)13737 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13738 struct netlink_callback *cb)
13739 {
13740 struct cfg80211_registered_device *rdev;
13741 struct wireless_dev *wdev;
13742 unsigned int vcmd_idx;
13743 const struct wiphy_vendor_command *vcmd;
13744 void *data;
13745 int data_len;
13746 int err;
13747 struct nlattr *vendor_data;
13748
13749 rtnl_lock();
13750 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13751 if (err)
13752 goto out;
13753
13754 vcmd_idx = cb->args[2];
13755 data = (void *)cb->args[3];
13756 data_len = cb->args[4];
13757 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13758
13759 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13760 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13761 if (!wdev) {
13762 err = -EINVAL;
13763 goto out;
13764 }
13765 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13766 !wdev->netdev) {
13767 err = -EINVAL;
13768 goto out;
13769 }
13770
13771 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13772 if (!wdev_running(wdev)) {
13773 err = -ENETDOWN;
13774 goto out;
13775 }
13776 }
13777 }
13778
13779 while (1) {
13780 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13781 cb->nlh->nlmsg_seq, NLM_F_MULTI,
13782 NL80211_CMD_VENDOR);
13783 if (!hdr)
13784 break;
13785
13786 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13787 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13788 wdev_id(wdev),
13789 NL80211_ATTR_PAD))) {
13790 genlmsg_cancel(skb, hdr);
13791 break;
13792 }
13793
13794 vendor_data = nla_nest_start_noflag(skb,
13795 NL80211_ATTR_VENDOR_DATA);
13796 if (!vendor_data) {
13797 genlmsg_cancel(skb, hdr);
13798 break;
13799 }
13800
13801 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13802 (unsigned long *)&cb->args[5]);
13803 nla_nest_end(skb, vendor_data);
13804
13805 if (err == -ENOBUFS || err == -ENOENT) {
13806 genlmsg_cancel(skb, hdr);
13807 break;
13808 } else if (err <= 0) {
13809 genlmsg_cancel(skb, hdr);
13810 goto out;
13811 }
13812
13813 genlmsg_end(skb, hdr);
13814 }
13815
13816 err = skb->len;
13817 out:
13818 rtnl_unlock();
13819 return err;
13820 }
13821
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)13822 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13823 enum nl80211_commands cmd,
13824 enum nl80211_attrs attr,
13825 int approxlen)
13826 {
13827 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13828
13829 if (WARN_ON(!rdev->cur_cmd_info))
13830 return NULL;
13831
13832 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13833 rdev->cur_cmd_info->snd_portid,
13834 rdev->cur_cmd_info->snd_seq,
13835 cmd, attr, NULL, GFP_KERNEL);
13836 }
13837 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13838
cfg80211_vendor_cmd_reply(struct sk_buff * skb)13839 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13840 {
13841 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13842 void *hdr = ((void **)skb->cb)[1];
13843 struct nlattr *data = ((void **)skb->cb)[2];
13844
13845 /* clear CB data for netlink core to own from now on */
13846 memset(skb->cb, 0, sizeof(skb->cb));
13847
13848 if (WARN_ON(!rdev->cur_cmd_info)) {
13849 kfree_skb(skb);
13850 return -EINVAL;
13851 }
13852
13853 nla_nest_end(skb, data);
13854 genlmsg_end(skb, hdr);
13855 return genlmsg_reply(skb, rdev->cur_cmd_info);
13856 }
13857 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13858
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)13859 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13860 {
13861 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13862
13863 if (WARN_ON(!rdev->cur_cmd_info))
13864 return 0;
13865
13866 return rdev->cur_cmd_info->snd_portid;
13867 }
13868 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13869
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)13870 static int nl80211_set_qos_map(struct sk_buff *skb,
13871 struct genl_info *info)
13872 {
13873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13874 struct cfg80211_qos_map *qos_map = NULL;
13875 struct net_device *dev = info->user_ptr[1];
13876 u8 *pos, len, num_des, des_len, des;
13877 int ret;
13878
13879 if (!rdev->ops->set_qos_map)
13880 return -EOPNOTSUPP;
13881
13882 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13883 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13884 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13885
13886 if (len % 2)
13887 return -EINVAL;
13888
13889 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13890 if (!qos_map)
13891 return -ENOMEM;
13892
13893 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13894 if (num_des) {
13895 des_len = num_des *
13896 sizeof(struct cfg80211_dscp_exception);
13897 memcpy(qos_map->dscp_exception, pos, des_len);
13898 qos_map->num_des = num_des;
13899 for (des = 0; des < num_des; des++) {
13900 if (qos_map->dscp_exception[des].up > 7) {
13901 kfree(qos_map);
13902 return -EINVAL;
13903 }
13904 }
13905 pos += des_len;
13906 }
13907 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13908 }
13909
13910 wdev_lock(dev->ieee80211_ptr);
13911 ret = nl80211_key_allowed(dev->ieee80211_ptr);
13912 if (!ret)
13913 ret = rdev_set_qos_map(rdev, dev, qos_map);
13914 wdev_unlock(dev->ieee80211_ptr);
13915
13916 kfree(qos_map);
13917 return ret;
13918 }
13919
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)13920 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13921 {
13922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13923 struct net_device *dev = info->user_ptr[1];
13924 struct wireless_dev *wdev = dev->ieee80211_ptr;
13925 const u8 *peer;
13926 u8 tsid, up;
13927 u16 admitted_time = 0;
13928 int err;
13929
13930 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13931 return -EOPNOTSUPP;
13932
13933 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13934 !info->attrs[NL80211_ATTR_USER_PRIO])
13935 return -EINVAL;
13936
13937 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13938 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13939
13940 /* WMM uses TIDs 0-7 even for TSPEC */
13941 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13942 /* TODO: handle 802.11 TSPEC/admission control
13943 * need more attributes for that (e.g. BA session requirement);
13944 * change the WMM adminssion test above to allow both then
13945 */
13946 return -EINVAL;
13947 }
13948
13949 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13950
13951 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13952 admitted_time =
13953 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13954 if (!admitted_time)
13955 return -EINVAL;
13956 }
13957
13958 wdev_lock(wdev);
13959 switch (wdev->iftype) {
13960 case NL80211_IFTYPE_STATION:
13961 case NL80211_IFTYPE_P2P_CLIENT:
13962 if (wdev->current_bss)
13963 break;
13964 err = -ENOTCONN;
13965 goto out;
13966 default:
13967 err = -EOPNOTSUPP;
13968 goto out;
13969 }
13970
13971 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13972
13973 out:
13974 wdev_unlock(wdev);
13975 return err;
13976 }
13977
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)13978 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13979 {
13980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13981 struct net_device *dev = info->user_ptr[1];
13982 struct wireless_dev *wdev = dev->ieee80211_ptr;
13983 const u8 *peer;
13984 u8 tsid;
13985 int err;
13986
13987 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13988 return -EINVAL;
13989
13990 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13991 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13992
13993 wdev_lock(wdev);
13994 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13995 wdev_unlock(wdev);
13996
13997 return err;
13998 }
13999
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)14000 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14001 struct genl_info *info)
14002 {
14003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14004 struct net_device *dev = info->user_ptr[1];
14005 struct wireless_dev *wdev = dev->ieee80211_ptr;
14006 struct cfg80211_chan_def chandef = {};
14007 const u8 *addr;
14008 u8 oper_class;
14009 int err;
14010
14011 if (!rdev->ops->tdls_channel_switch ||
14012 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14013 return -EOPNOTSUPP;
14014
14015 switch (dev->ieee80211_ptr->iftype) {
14016 case NL80211_IFTYPE_STATION:
14017 case NL80211_IFTYPE_P2P_CLIENT:
14018 break;
14019 default:
14020 return -EOPNOTSUPP;
14021 }
14022
14023 if (!info->attrs[NL80211_ATTR_MAC] ||
14024 !info->attrs[NL80211_ATTR_OPER_CLASS])
14025 return -EINVAL;
14026
14027 err = nl80211_parse_chandef(rdev, info, &chandef);
14028 if (err)
14029 return err;
14030
14031 /*
14032 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14033 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14034 * specification is not defined for them.
14035 */
14036 if (chandef.chan->band == NL80211_BAND_2GHZ &&
14037 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14038 chandef.width != NL80211_CHAN_WIDTH_20)
14039 return -EINVAL;
14040
14041 /* we will be active on the TDLS link */
14042 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14043 wdev->iftype))
14044 return -EINVAL;
14045
14046 /* don't allow switching to DFS channels */
14047 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14048 return -EINVAL;
14049
14050 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14051 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14052
14053 wdev_lock(wdev);
14054 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14055 wdev_unlock(wdev);
14056
14057 return err;
14058 }
14059
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)14060 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14061 struct genl_info *info)
14062 {
14063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14064 struct net_device *dev = info->user_ptr[1];
14065 struct wireless_dev *wdev = dev->ieee80211_ptr;
14066 const u8 *addr;
14067
14068 if (!rdev->ops->tdls_channel_switch ||
14069 !rdev->ops->tdls_cancel_channel_switch ||
14070 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14071 return -EOPNOTSUPP;
14072
14073 switch (dev->ieee80211_ptr->iftype) {
14074 case NL80211_IFTYPE_STATION:
14075 case NL80211_IFTYPE_P2P_CLIENT:
14076 break;
14077 default:
14078 return -EOPNOTSUPP;
14079 }
14080
14081 if (!info->attrs[NL80211_ATTR_MAC])
14082 return -EINVAL;
14083
14084 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14085
14086 wdev_lock(wdev);
14087 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14088 wdev_unlock(wdev);
14089
14090 return 0;
14091 }
14092
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)14093 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14094 struct genl_info *info)
14095 {
14096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14097 struct net_device *dev = info->user_ptr[1];
14098 struct wireless_dev *wdev = dev->ieee80211_ptr;
14099 const struct nlattr *nla;
14100 bool enabled;
14101
14102 if (!rdev->ops->set_multicast_to_unicast)
14103 return -EOPNOTSUPP;
14104
14105 if (wdev->iftype != NL80211_IFTYPE_AP &&
14106 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14107 return -EOPNOTSUPP;
14108
14109 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14110 enabled = nla_get_flag(nla);
14111
14112 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14113 }
14114
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)14115 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14116 {
14117 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14118 struct net_device *dev = info->user_ptr[1];
14119 struct wireless_dev *wdev = dev->ieee80211_ptr;
14120 struct cfg80211_pmk_conf pmk_conf = {};
14121 int ret;
14122
14123 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14124 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14125 return -EOPNOTSUPP;
14126
14127 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14128 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14129 return -EOPNOTSUPP;
14130
14131 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14132 return -EINVAL;
14133
14134 wdev_lock(wdev);
14135 if (!wdev->current_bss) {
14136 ret = -ENOTCONN;
14137 goto out;
14138 }
14139
14140 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14141 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14142 ret = -EINVAL;
14143 goto out;
14144 }
14145
14146 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14147 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14148 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14149 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14150 ret = -EINVAL;
14151 goto out;
14152 }
14153
14154 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14155 pmk_conf.pmk_r0_name =
14156 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14157
14158 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14159 out:
14160 wdev_unlock(wdev);
14161 return ret;
14162 }
14163
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)14164 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14165 {
14166 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14167 struct net_device *dev = info->user_ptr[1];
14168 struct wireless_dev *wdev = dev->ieee80211_ptr;
14169 const u8 *aa;
14170 int ret;
14171
14172 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14173 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14174 return -EOPNOTSUPP;
14175
14176 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14177 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14178 return -EOPNOTSUPP;
14179
14180 if (!info->attrs[NL80211_ATTR_MAC])
14181 return -EINVAL;
14182
14183 wdev_lock(wdev);
14184 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14185 ret = rdev_del_pmk(rdev, dev, aa);
14186 wdev_unlock(wdev);
14187
14188 return ret;
14189 }
14190
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)14191 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14192 {
14193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14194 struct net_device *dev = info->user_ptr[1];
14195 struct cfg80211_external_auth_params params;
14196
14197 if (!rdev->ops->external_auth)
14198 return -EOPNOTSUPP;
14199
14200 if (!info->attrs[NL80211_ATTR_SSID] &&
14201 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14202 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14203 return -EINVAL;
14204
14205 if (!info->attrs[NL80211_ATTR_BSSID])
14206 return -EINVAL;
14207
14208 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14209 return -EINVAL;
14210
14211 memset(¶ms, 0, sizeof(params));
14212
14213 if (info->attrs[NL80211_ATTR_SSID]) {
14214 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14215 if (params.ssid.ssid_len == 0)
14216 return -EINVAL;
14217 memcpy(params.ssid.ssid,
14218 nla_data(info->attrs[NL80211_ATTR_SSID]),
14219 params.ssid.ssid_len);
14220 }
14221
14222 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14223 ETH_ALEN);
14224
14225 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14226
14227 if (info->attrs[NL80211_ATTR_PMKID])
14228 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14229
14230 return rdev_external_auth(rdev, dev, ¶ms);
14231 }
14232
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)14233 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14234 {
14235 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14237 struct net_device *dev = info->user_ptr[1];
14238 struct wireless_dev *wdev = dev->ieee80211_ptr;
14239 const u8 *buf;
14240 size_t len;
14241 u8 *dest;
14242 u16 proto;
14243 bool noencrypt;
14244 u64 cookie = 0;
14245 int err;
14246
14247 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14248 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14249 return -EOPNOTSUPP;
14250
14251 if (!rdev->ops->tx_control_port)
14252 return -EOPNOTSUPP;
14253
14254 if (!info->attrs[NL80211_ATTR_FRAME] ||
14255 !info->attrs[NL80211_ATTR_MAC] ||
14256 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14257 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14258 return -EINVAL;
14259 }
14260
14261 wdev_lock(wdev);
14262
14263 switch (wdev->iftype) {
14264 case NL80211_IFTYPE_AP:
14265 case NL80211_IFTYPE_P2P_GO:
14266 case NL80211_IFTYPE_MESH_POINT:
14267 break;
14268 case NL80211_IFTYPE_ADHOC:
14269 case NL80211_IFTYPE_STATION:
14270 case NL80211_IFTYPE_P2P_CLIENT:
14271 if (wdev->current_bss)
14272 break;
14273 err = -ENOTCONN;
14274 goto out;
14275 default:
14276 err = -EOPNOTSUPP;
14277 goto out;
14278 }
14279
14280 wdev_unlock(wdev);
14281
14282 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14283 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14284 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14285 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14286 noencrypt =
14287 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14288
14289 err = rdev_tx_control_port(rdev, dev, buf, len,
14290 dest, cpu_to_be16(proto), noencrypt,
14291 dont_wait_for_ack ? NULL : &cookie);
14292 if (!err && !dont_wait_for_ack)
14293 nl_set_extack_cookie_u64(info->extack, cookie);
14294 return err;
14295 out:
14296 wdev_unlock(wdev);
14297 return err;
14298 }
14299
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)14300 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14301 struct genl_info *info)
14302 {
14303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14304 struct net_device *dev = info->user_ptr[1];
14305 struct wireless_dev *wdev = dev->ieee80211_ptr;
14306 struct cfg80211_ftm_responder_stats ftm_stats = {};
14307 struct sk_buff *msg;
14308 void *hdr;
14309 struct nlattr *ftm_stats_attr;
14310 int err;
14311
14312 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14313 return -EOPNOTSUPP;
14314
14315 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14316 if (err)
14317 return err;
14318
14319 if (!ftm_stats.filled)
14320 return -ENODATA;
14321
14322 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14323 if (!msg)
14324 return -ENOMEM;
14325
14326 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14327 NL80211_CMD_GET_FTM_RESPONDER_STATS);
14328 if (!hdr)
14329 goto nla_put_failure;
14330
14331 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14332 goto nla_put_failure;
14333
14334 ftm_stats_attr = nla_nest_start_noflag(msg,
14335 NL80211_ATTR_FTM_RESPONDER_STATS);
14336 if (!ftm_stats_attr)
14337 goto nla_put_failure;
14338
14339 #define SET_FTM(field, name, type) \
14340 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14341 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
14342 ftm_stats.field)) \
14343 goto nla_put_failure; } while (0)
14344 #define SET_FTM_U64(field, name) \
14345 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14346 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
14347 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
14348 goto nla_put_failure; } while (0)
14349
14350 SET_FTM(success_num, SUCCESS_NUM, u32);
14351 SET_FTM(partial_num, PARTIAL_NUM, u32);
14352 SET_FTM(failed_num, FAILED_NUM, u32);
14353 SET_FTM(asap_num, ASAP_NUM, u32);
14354 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14355 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14356 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14357 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14358 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14359 #undef SET_FTM
14360
14361 nla_nest_end(msg, ftm_stats_attr);
14362
14363 genlmsg_end(msg, hdr);
14364 return genlmsg_reply(msg, info);
14365
14366 nla_put_failure:
14367 nlmsg_free(msg);
14368 return -ENOBUFS;
14369 }
14370
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)14371 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14372 {
14373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14374 struct cfg80211_update_owe_info owe_info;
14375 struct net_device *dev = info->user_ptr[1];
14376
14377 if (!rdev->ops->update_owe_info)
14378 return -EOPNOTSUPP;
14379
14380 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14381 !info->attrs[NL80211_ATTR_MAC])
14382 return -EINVAL;
14383
14384 memset(&owe_info, 0, sizeof(owe_info));
14385 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14386 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14387
14388 if (info->attrs[NL80211_ATTR_IE]) {
14389 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14390 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14391 }
14392
14393 return rdev_update_owe_info(rdev, dev, &owe_info);
14394 }
14395
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)14396 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14397 {
14398 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14399 struct net_device *dev = info->user_ptr[1];
14400 struct wireless_dev *wdev = dev->ieee80211_ptr;
14401 struct station_info sinfo = {};
14402 const u8 *buf;
14403 size_t len;
14404 u8 *dest;
14405 int err;
14406
14407 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14408 return -EOPNOTSUPP;
14409
14410 if (!info->attrs[NL80211_ATTR_MAC] ||
14411 !info->attrs[NL80211_ATTR_FRAME]) {
14412 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14413 return -EINVAL;
14414 }
14415
14416 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14417 return -EOPNOTSUPP;
14418
14419 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14420 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14421 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14422
14423 if (len < sizeof(struct ethhdr))
14424 return -EINVAL;
14425
14426 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14427 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14428 return -EINVAL;
14429
14430 err = rdev_get_station(rdev, dev, dest, &sinfo);
14431 if (err)
14432 return err;
14433
14434 cfg80211_sinfo_release_content(&sinfo);
14435
14436 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14437 }
14438
parse_tid_conf(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct net_device * dev,struct cfg80211_tid_cfg * tid_conf,struct genl_info * info,const u8 * peer)14439 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14440 struct nlattr *attrs[], struct net_device *dev,
14441 struct cfg80211_tid_cfg *tid_conf,
14442 struct genl_info *info, const u8 *peer)
14443 {
14444 struct netlink_ext_ack *extack = info->extack;
14445 u64 mask;
14446 int err;
14447
14448 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14449 return -EINVAL;
14450
14451 tid_conf->config_override =
14452 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14453 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14454
14455 if (tid_conf->config_override) {
14456 if (rdev->ops->reset_tid_config) {
14457 err = rdev_reset_tid_config(rdev, dev, peer,
14458 tid_conf->tids);
14459 if (err)
14460 return err;
14461 } else {
14462 return -EINVAL;
14463 }
14464 }
14465
14466 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14467 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14468 tid_conf->noack =
14469 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14470 }
14471
14472 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14473 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14474 tid_conf->retry_short =
14475 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14476
14477 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14478 return -EINVAL;
14479 }
14480
14481 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14482 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14483 tid_conf->retry_long =
14484 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14485
14486 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14487 return -EINVAL;
14488 }
14489
14490 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14491 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14492 tid_conf->ampdu =
14493 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14494 }
14495
14496 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14497 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14498 tid_conf->rtscts =
14499 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14500 }
14501
14502 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14503 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14504 tid_conf->amsdu =
14505 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14506 }
14507
14508 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14509 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14510
14511 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14512
14513 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14514 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14515 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14516 &tid_conf->txrate_mask, dev);
14517 if (err)
14518 return err;
14519
14520 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14521 }
14522 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14523 }
14524
14525 if (peer)
14526 mask = rdev->wiphy.tid_config_support.peer;
14527 else
14528 mask = rdev->wiphy.tid_config_support.vif;
14529
14530 if (tid_conf->mask & ~mask) {
14531 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14532 return -ENOTSUPP;
14533 }
14534
14535 return 0;
14536 }
14537
nl80211_set_tid_config(struct sk_buff * skb,struct genl_info * info)14538 static int nl80211_set_tid_config(struct sk_buff *skb,
14539 struct genl_info *info)
14540 {
14541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14542 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14543 struct net_device *dev = info->user_ptr[1];
14544 struct cfg80211_tid_config *tid_config;
14545 struct nlattr *tid;
14546 int conf_idx = 0, rem_conf;
14547 int ret = -EINVAL;
14548 u32 num_conf = 0;
14549
14550 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14551 return -EINVAL;
14552
14553 if (!rdev->ops->set_tid_config)
14554 return -EOPNOTSUPP;
14555
14556 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14557 rem_conf)
14558 num_conf++;
14559
14560 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14561 GFP_KERNEL);
14562 if (!tid_config)
14563 return -ENOMEM;
14564
14565 tid_config->n_tid_conf = num_conf;
14566
14567 if (info->attrs[NL80211_ATTR_MAC])
14568 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14569
14570 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14571 rem_conf) {
14572 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14573 tid, NULL, NULL);
14574
14575 if (ret)
14576 goto bad_tid_conf;
14577
14578 ret = parse_tid_conf(rdev, attrs, dev,
14579 &tid_config->tid_conf[conf_idx],
14580 info, tid_config->peer);
14581 if (ret)
14582 goto bad_tid_conf;
14583
14584 conf_idx++;
14585 }
14586
14587 ret = rdev_set_tid_config(rdev, dev, tid_config);
14588
14589 bad_tid_conf:
14590 kfree(tid_config);
14591 return ret;
14592 }
14593
14594 #define NL80211_FLAG_NEED_WIPHY 0x01
14595 #define NL80211_FLAG_NEED_NETDEV 0x02
14596 #define NL80211_FLAG_NEED_RTNL 0x04
14597 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
14598 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
14599 NL80211_FLAG_CHECK_NETDEV_UP)
14600 #define NL80211_FLAG_NEED_WDEV 0x10
14601 /* If a netdev is associated, it must be UP, P2P must be started */
14602 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
14603 NL80211_FLAG_CHECK_NETDEV_UP)
14604 #define NL80211_FLAG_CLEAR_SKB 0x20
14605
nl80211_pre_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)14606 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14607 struct genl_info *info)
14608 {
14609 struct cfg80211_registered_device *rdev;
14610 struct wireless_dev *wdev;
14611 struct net_device *dev;
14612 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14613
14614 if (rtnl)
14615 rtnl_lock();
14616
14617 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14618 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14619 if (IS_ERR(rdev)) {
14620 if (rtnl)
14621 rtnl_unlock();
14622 return PTR_ERR(rdev);
14623 }
14624 info->user_ptr[0] = rdev;
14625 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14626 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14627 ASSERT_RTNL();
14628
14629 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14630 info->attrs);
14631 if (IS_ERR(wdev)) {
14632 if (rtnl)
14633 rtnl_unlock();
14634 return PTR_ERR(wdev);
14635 }
14636
14637 dev = wdev->netdev;
14638 rdev = wiphy_to_rdev(wdev->wiphy);
14639
14640 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14641 if (!dev) {
14642 if (rtnl)
14643 rtnl_unlock();
14644 return -EINVAL;
14645 }
14646
14647 info->user_ptr[1] = dev;
14648 } else {
14649 info->user_ptr[1] = wdev;
14650 }
14651
14652 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14653 !wdev_running(wdev)) {
14654 if (rtnl)
14655 rtnl_unlock();
14656 return -ENETDOWN;
14657 }
14658
14659 if (dev)
14660 dev_hold(dev);
14661
14662 info->user_ptr[0] = rdev;
14663 }
14664
14665 return 0;
14666 }
14667
nl80211_post_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)14668 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14669 struct genl_info *info)
14670 {
14671 if (info->user_ptr[1]) {
14672 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14673 struct wireless_dev *wdev = info->user_ptr[1];
14674
14675 if (wdev->netdev)
14676 dev_put(wdev->netdev);
14677 } else {
14678 dev_put(info->user_ptr[1]);
14679 }
14680 }
14681
14682 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14683 rtnl_unlock();
14684
14685 /* If needed, clear the netlink message payload from the SKB
14686 * as it might contain key data that shouldn't stick around on
14687 * the heap after the SKB is freed. The netlink message header
14688 * is still needed for further processing, so leave it intact.
14689 */
14690 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14691 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14692
14693 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14694 }
14695 }
14696
14697 static const struct genl_ops nl80211_ops[] = {
14698 {
14699 .cmd = NL80211_CMD_GET_WIPHY,
14700 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14701 .doit = nl80211_get_wiphy,
14702 .dumpit = nl80211_dump_wiphy,
14703 .done = nl80211_dump_wiphy_done,
14704 /* can be retrieved by unprivileged users */
14705 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14706 NL80211_FLAG_NEED_RTNL,
14707 },
14708 };
14709
14710 static const struct genl_small_ops nl80211_small_ops[] = {
14711 {
14712 .cmd = NL80211_CMD_SET_WIPHY,
14713 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14714 .doit = nl80211_set_wiphy,
14715 .flags = GENL_UNS_ADMIN_PERM,
14716 .internal_flags = NL80211_FLAG_NEED_RTNL,
14717 },
14718 {
14719 .cmd = NL80211_CMD_GET_INTERFACE,
14720 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14721 .doit = nl80211_get_interface,
14722 .dumpit = nl80211_dump_interface,
14723 /* can be retrieved by unprivileged users */
14724 .internal_flags = NL80211_FLAG_NEED_WDEV |
14725 NL80211_FLAG_NEED_RTNL,
14726 },
14727 {
14728 .cmd = NL80211_CMD_SET_INTERFACE,
14729 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14730 .doit = nl80211_set_interface,
14731 .flags = GENL_UNS_ADMIN_PERM,
14732 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14733 NL80211_FLAG_NEED_RTNL,
14734 },
14735 {
14736 .cmd = NL80211_CMD_NEW_INTERFACE,
14737 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14738 .doit = nl80211_new_interface,
14739 .flags = GENL_UNS_ADMIN_PERM,
14740 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14741 NL80211_FLAG_NEED_RTNL,
14742 },
14743 {
14744 .cmd = NL80211_CMD_DEL_INTERFACE,
14745 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14746 .doit = nl80211_del_interface,
14747 .flags = GENL_UNS_ADMIN_PERM,
14748 .internal_flags = NL80211_FLAG_NEED_WDEV |
14749 NL80211_FLAG_NEED_RTNL,
14750 },
14751 {
14752 .cmd = NL80211_CMD_GET_KEY,
14753 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14754 .doit = nl80211_get_key,
14755 .flags = GENL_UNS_ADMIN_PERM,
14756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14757 NL80211_FLAG_NEED_RTNL,
14758 },
14759 {
14760 .cmd = NL80211_CMD_SET_KEY,
14761 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14762 .doit = nl80211_set_key,
14763 .flags = GENL_UNS_ADMIN_PERM,
14764 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14765 NL80211_FLAG_NEED_RTNL |
14766 NL80211_FLAG_CLEAR_SKB,
14767 },
14768 {
14769 .cmd = NL80211_CMD_NEW_KEY,
14770 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14771 .doit = nl80211_new_key,
14772 .flags = GENL_UNS_ADMIN_PERM,
14773 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14774 NL80211_FLAG_NEED_RTNL |
14775 NL80211_FLAG_CLEAR_SKB,
14776 },
14777 {
14778 .cmd = NL80211_CMD_DEL_KEY,
14779 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14780 .doit = nl80211_del_key,
14781 .flags = GENL_UNS_ADMIN_PERM,
14782 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14783 NL80211_FLAG_NEED_RTNL,
14784 },
14785 {
14786 .cmd = NL80211_CMD_SET_BEACON,
14787 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14788 .flags = GENL_UNS_ADMIN_PERM,
14789 .doit = nl80211_set_beacon,
14790 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14791 NL80211_FLAG_NEED_RTNL,
14792 },
14793 {
14794 .cmd = NL80211_CMD_START_AP,
14795 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14796 .flags = GENL_UNS_ADMIN_PERM,
14797 .doit = nl80211_start_ap,
14798 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14799 NL80211_FLAG_NEED_RTNL,
14800 },
14801 {
14802 .cmd = NL80211_CMD_STOP_AP,
14803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14804 .flags = GENL_UNS_ADMIN_PERM,
14805 .doit = nl80211_stop_ap,
14806 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14807 NL80211_FLAG_NEED_RTNL,
14808 },
14809 {
14810 .cmd = NL80211_CMD_GET_STATION,
14811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14812 .doit = nl80211_get_station,
14813 .dumpit = nl80211_dump_station,
14814 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14815 NL80211_FLAG_NEED_RTNL,
14816 },
14817 {
14818 .cmd = NL80211_CMD_SET_STATION,
14819 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14820 .doit = nl80211_set_station,
14821 .flags = GENL_UNS_ADMIN_PERM,
14822 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14823 NL80211_FLAG_NEED_RTNL,
14824 },
14825 {
14826 .cmd = NL80211_CMD_NEW_STATION,
14827 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14828 .doit = nl80211_new_station,
14829 .flags = GENL_UNS_ADMIN_PERM,
14830 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14831 NL80211_FLAG_NEED_RTNL,
14832 },
14833 {
14834 .cmd = NL80211_CMD_DEL_STATION,
14835 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14836 .doit = nl80211_del_station,
14837 .flags = GENL_UNS_ADMIN_PERM,
14838 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14839 NL80211_FLAG_NEED_RTNL,
14840 },
14841 {
14842 .cmd = NL80211_CMD_GET_MPATH,
14843 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14844 .doit = nl80211_get_mpath,
14845 .dumpit = nl80211_dump_mpath,
14846 .flags = GENL_UNS_ADMIN_PERM,
14847 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14848 NL80211_FLAG_NEED_RTNL,
14849 },
14850 {
14851 .cmd = NL80211_CMD_GET_MPP,
14852 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14853 .doit = nl80211_get_mpp,
14854 .dumpit = nl80211_dump_mpp,
14855 .flags = GENL_UNS_ADMIN_PERM,
14856 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14857 NL80211_FLAG_NEED_RTNL,
14858 },
14859 {
14860 .cmd = NL80211_CMD_SET_MPATH,
14861 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14862 .doit = nl80211_set_mpath,
14863 .flags = GENL_UNS_ADMIN_PERM,
14864 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14865 NL80211_FLAG_NEED_RTNL,
14866 },
14867 {
14868 .cmd = NL80211_CMD_NEW_MPATH,
14869 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14870 .doit = nl80211_new_mpath,
14871 .flags = GENL_UNS_ADMIN_PERM,
14872 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14873 NL80211_FLAG_NEED_RTNL,
14874 },
14875 {
14876 .cmd = NL80211_CMD_DEL_MPATH,
14877 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14878 .doit = nl80211_del_mpath,
14879 .flags = GENL_UNS_ADMIN_PERM,
14880 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14881 NL80211_FLAG_NEED_RTNL,
14882 },
14883 {
14884 .cmd = NL80211_CMD_SET_BSS,
14885 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14886 .doit = nl80211_set_bss,
14887 .flags = GENL_UNS_ADMIN_PERM,
14888 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14889 NL80211_FLAG_NEED_RTNL,
14890 },
14891 {
14892 .cmd = NL80211_CMD_GET_REG,
14893 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14894 .doit = nl80211_get_reg_do,
14895 .dumpit = nl80211_get_reg_dump,
14896 .internal_flags = NL80211_FLAG_NEED_RTNL,
14897 /* can be retrieved by unprivileged users */
14898 },
14899 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14900 {
14901 .cmd = NL80211_CMD_SET_REG,
14902 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14903 .doit = nl80211_set_reg,
14904 .flags = GENL_ADMIN_PERM,
14905 .internal_flags = NL80211_FLAG_NEED_RTNL,
14906 },
14907 #endif
14908 {
14909 .cmd = NL80211_CMD_REQ_SET_REG,
14910 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14911 .doit = nl80211_req_set_reg,
14912 .flags = GENL_ADMIN_PERM,
14913 },
14914 {
14915 .cmd = NL80211_CMD_RELOAD_REGDB,
14916 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14917 .doit = nl80211_reload_regdb,
14918 .flags = GENL_ADMIN_PERM,
14919 },
14920 {
14921 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14922 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14923 .doit = nl80211_get_mesh_config,
14924 /* can be retrieved by unprivileged users */
14925 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14926 NL80211_FLAG_NEED_RTNL,
14927 },
14928 {
14929 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14930 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14931 .doit = nl80211_update_mesh_config,
14932 .flags = GENL_UNS_ADMIN_PERM,
14933 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14934 NL80211_FLAG_NEED_RTNL,
14935 },
14936 {
14937 .cmd = NL80211_CMD_TRIGGER_SCAN,
14938 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14939 .doit = nl80211_trigger_scan,
14940 .flags = GENL_UNS_ADMIN_PERM,
14941 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14942 NL80211_FLAG_NEED_RTNL,
14943 },
14944 {
14945 .cmd = NL80211_CMD_ABORT_SCAN,
14946 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14947 .doit = nl80211_abort_scan,
14948 .flags = GENL_UNS_ADMIN_PERM,
14949 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14950 NL80211_FLAG_NEED_RTNL,
14951 },
14952 {
14953 .cmd = NL80211_CMD_GET_SCAN,
14954 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14955 .dumpit = nl80211_dump_scan,
14956 },
14957 {
14958 .cmd = NL80211_CMD_START_SCHED_SCAN,
14959 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14960 .doit = nl80211_start_sched_scan,
14961 .flags = GENL_UNS_ADMIN_PERM,
14962 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14963 NL80211_FLAG_NEED_RTNL,
14964 },
14965 {
14966 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14967 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14968 .doit = nl80211_stop_sched_scan,
14969 .flags = GENL_UNS_ADMIN_PERM,
14970 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14971 NL80211_FLAG_NEED_RTNL,
14972 },
14973 {
14974 .cmd = NL80211_CMD_AUTHENTICATE,
14975 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14976 .doit = nl80211_authenticate,
14977 .flags = GENL_UNS_ADMIN_PERM,
14978 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14979 NL80211_FLAG_NEED_RTNL |
14980 NL80211_FLAG_CLEAR_SKB,
14981 },
14982 {
14983 .cmd = NL80211_CMD_ASSOCIATE,
14984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14985 .doit = nl80211_associate,
14986 .flags = GENL_UNS_ADMIN_PERM,
14987 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14988 NL80211_FLAG_NEED_RTNL |
14989 NL80211_FLAG_CLEAR_SKB,
14990 },
14991 {
14992 .cmd = NL80211_CMD_DEAUTHENTICATE,
14993 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14994 .doit = nl80211_deauthenticate,
14995 .flags = GENL_UNS_ADMIN_PERM,
14996 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14997 NL80211_FLAG_NEED_RTNL,
14998 },
14999 {
15000 .cmd = NL80211_CMD_DISASSOCIATE,
15001 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15002 .doit = nl80211_disassociate,
15003 .flags = GENL_UNS_ADMIN_PERM,
15004 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15005 NL80211_FLAG_NEED_RTNL,
15006 },
15007 {
15008 .cmd = NL80211_CMD_JOIN_IBSS,
15009 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15010 .doit = nl80211_join_ibss,
15011 .flags = GENL_UNS_ADMIN_PERM,
15012 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15013 NL80211_FLAG_NEED_RTNL,
15014 },
15015 {
15016 .cmd = NL80211_CMD_LEAVE_IBSS,
15017 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15018 .doit = nl80211_leave_ibss,
15019 .flags = GENL_UNS_ADMIN_PERM,
15020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15021 NL80211_FLAG_NEED_RTNL,
15022 },
15023 #ifdef CONFIG_NL80211_TESTMODE
15024 {
15025 .cmd = NL80211_CMD_TESTMODE,
15026 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15027 .doit = nl80211_testmode_do,
15028 .dumpit = nl80211_testmode_dump,
15029 .flags = GENL_UNS_ADMIN_PERM,
15030 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15031 NL80211_FLAG_NEED_RTNL,
15032 },
15033 #endif
15034 {
15035 .cmd = NL80211_CMD_CONNECT,
15036 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15037 .doit = nl80211_connect,
15038 .flags = GENL_UNS_ADMIN_PERM,
15039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15040 NL80211_FLAG_NEED_RTNL |
15041 NL80211_FLAG_CLEAR_SKB,
15042 },
15043 {
15044 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15045 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15046 .doit = nl80211_update_connect_params,
15047 .flags = GENL_ADMIN_PERM,
15048 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15049 NL80211_FLAG_NEED_RTNL |
15050 NL80211_FLAG_CLEAR_SKB,
15051 },
15052 {
15053 .cmd = NL80211_CMD_DISCONNECT,
15054 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15055 .doit = nl80211_disconnect,
15056 .flags = GENL_UNS_ADMIN_PERM,
15057 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15058 NL80211_FLAG_NEED_RTNL,
15059 },
15060 {
15061 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15062 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15063 .doit = nl80211_wiphy_netns,
15064 .flags = GENL_UNS_ADMIN_PERM,
15065 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15066 NL80211_FLAG_NEED_RTNL,
15067 },
15068 {
15069 .cmd = NL80211_CMD_GET_SURVEY,
15070 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15071 .dumpit = nl80211_dump_survey,
15072 },
15073 {
15074 .cmd = NL80211_CMD_SET_PMKSA,
15075 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15076 .doit = nl80211_setdel_pmksa,
15077 .flags = GENL_UNS_ADMIN_PERM,
15078 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15079 NL80211_FLAG_NEED_RTNL |
15080 NL80211_FLAG_CLEAR_SKB,
15081 },
15082 {
15083 .cmd = NL80211_CMD_DEL_PMKSA,
15084 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15085 .doit = nl80211_setdel_pmksa,
15086 .flags = GENL_UNS_ADMIN_PERM,
15087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15088 NL80211_FLAG_NEED_RTNL,
15089 },
15090 {
15091 .cmd = NL80211_CMD_FLUSH_PMKSA,
15092 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15093 .doit = nl80211_flush_pmksa,
15094 .flags = GENL_UNS_ADMIN_PERM,
15095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15096 NL80211_FLAG_NEED_RTNL,
15097 },
15098 {
15099 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15100 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15101 .doit = nl80211_remain_on_channel,
15102 .flags = GENL_UNS_ADMIN_PERM,
15103 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15104 NL80211_FLAG_NEED_RTNL,
15105 },
15106 {
15107 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15108 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109 .doit = nl80211_cancel_remain_on_channel,
15110 .flags = GENL_UNS_ADMIN_PERM,
15111 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15112 NL80211_FLAG_NEED_RTNL,
15113 },
15114 {
15115 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15116 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15117 .doit = nl80211_set_tx_bitrate_mask,
15118 .flags = GENL_UNS_ADMIN_PERM,
15119 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15120 NL80211_FLAG_NEED_RTNL,
15121 },
15122 {
15123 .cmd = NL80211_CMD_REGISTER_FRAME,
15124 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15125 .doit = nl80211_register_mgmt,
15126 .flags = GENL_UNS_ADMIN_PERM,
15127 .internal_flags = NL80211_FLAG_NEED_WDEV |
15128 NL80211_FLAG_NEED_RTNL,
15129 },
15130 {
15131 .cmd = NL80211_CMD_FRAME,
15132 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15133 .doit = nl80211_tx_mgmt,
15134 .flags = GENL_UNS_ADMIN_PERM,
15135 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15136 NL80211_FLAG_NEED_RTNL,
15137 },
15138 {
15139 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15140 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15141 .doit = nl80211_tx_mgmt_cancel_wait,
15142 .flags = GENL_UNS_ADMIN_PERM,
15143 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15144 NL80211_FLAG_NEED_RTNL,
15145 },
15146 {
15147 .cmd = NL80211_CMD_SET_POWER_SAVE,
15148 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15149 .doit = nl80211_set_power_save,
15150 .flags = GENL_UNS_ADMIN_PERM,
15151 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15152 NL80211_FLAG_NEED_RTNL,
15153 },
15154 {
15155 .cmd = NL80211_CMD_GET_POWER_SAVE,
15156 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15157 .doit = nl80211_get_power_save,
15158 /* can be retrieved by unprivileged users */
15159 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15160 NL80211_FLAG_NEED_RTNL,
15161 },
15162 {
15163 .cmd = NL80211_CMD_SET_CQM,
15164 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15165 .doit = nl80211_set_cqm,
15166 .flags = GENL_UNS_ADMIN_PERM,
15167 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15168 NL80211_FLAG_NEED_RTNL,
15169 },
15170 {
15171 .cmd = NL80211_CMD_SET_CHANNEL,
15172 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15173 .doit = nl80211_set_channel,
15174 .flags = GENL_UNS_ADMIN_PERM,
15175 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15176 NL80211_FLAG_NEED_RTNL,
15177 },
15178 {
15179 .cmd = NL80211_CMD_SET_WDS_PEER,
15180 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15181 .doit = nl80211_set_wds_peer,
15182 .flags = GENL_UNS_ADMIN_PERM,
15183 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15184 NL80211_FLAG_NEED_RTNL,
15185 },
15186 {
15187 .cmd = NL80211_CMD_JOIN_MESH,
15188 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15189 .doit = nl80211_join_mesh,
15190 .flags = GENL_UNS_ADMIN_PERM,
15191 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15192 NL80211_FLAG_NEED_RTNL,
15193 },
15194 {
15195 .cmd = NL80211_CMD_LEAVE_MESH,
15196 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15197 .doit = nl80211_leave_mesh,
15198 .flags = GENL_UNS_ADMIN_PERM,
15199 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15200 NL80211_FLAG_NEED_RTNL,
15201 },
15202 {
15203 .cmd = NL80211_CMD_JOIN_OCB,
15204 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15205 .doit = nl80211_join_ocb,
15206 .flags = GENL_UNS_ADMIN_PERM,
15207 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15208 NL80211_FLAG_NEED_RTNL,
15209 },
15210 {
15211 .cmd = NL80211_CMD_LEAVE_OCB,
15212 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15213 .doit = nl80211_leave_ocb,
15214 .flags = GENL_UNS_ADMIN_PERM,
15215 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15216 NL80211_FLAG_NEED_RTNL,
15217 },
15218 #ifdef CONFIG_PM
15219 {
15220 .cmd = NL80211_CMD_GET_WOWLAN,
15221 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15222 .doit = nl80211_get_wowlan,
15223 /* can be retrieved by unprivileged users */
15224 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15225 NL80211_FLAG_NEED_RTNL,
15226 },
15227 {
15228 .cmd = NL80211_CMD_SET_WOWLAN,
15229 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15230 .doit = nl80211_set_wowlan,
15231 .flags = GENL_UNS_ADMIN_PERM,
15232 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15233 NL80211_FLAG_NEED_RTNL,
15234 },
15235 #endif
15236 {
15237 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15238 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15239 .doit = nl80211_set_rekey_data,
15240 .flags = GENL_UNS_ADMIN_PERM,
15241 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15242 NL80211_FLAG_NEED_RTNL |
15243 NL80211_FLAG_CLEAR_SKB,
15244 },
15245 {
15246 .cmd = NL80211_CMD_TDLS_MGMT,
15247 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15248 .doit = nl80211_tdls_mgmt,
15249 .flags = GENL_UNS_ADMIN_PERM,
15250 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15251 NL80211_FLAG_NEED_RTNL,
15252 },
15253 {
15254 .cmd = NL80211_CMD_TDLS_OPER,
15255 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15256 .doit = nl80211_tdls_oper,
15257 .flags = GENL_UNS_ADMIN_PERM,
15258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15259 NL80211_FLAG_NEED_RTNL,
15260 },
15261 {
15262 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15263 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15264 .doit = nl80211_register_unexpected_frame,
15265 .flags = GENL_UNS_ADMIN_PERM,
15266 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15267 NL80211_FLAG_NEED_RTNL,
15268 },
15269 {
15270 .cmd = NL80211_CMD_PROBE_CLIENT,
15271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15272 .doit = nl80211_probe_client,
15273 .flags = GENL_UNS_ADMIN_PERM,
15274 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15275 NL80211_FLAG_NEED_RTNL,
15276 },
15277 {
15278 .cmd = NL80211_CMD_REGISTER_BEACONS,
15279 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15280 .doit = nl80211_register_beacons,
15281 .flags = GENL_UNS_ADMIN_PERM,
15282 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15283 NL80211_FLAG_NEED_RTNL,
15284 },
15285 {
15286 .cmd = NL80211_CMD_SET_NOACK_MAP,
15287 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15288 .doit = nl80211_set_noack_map,
15289 .flags = GENL_UNS_ADMIN_PERM,
15290 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15291 NL80211_FLAG_NEED_RTNL,
15292 },
15293 {
15294 .cmd = NL80211_CMD_START_P2P_DEVICE,
15295 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15296 .doit = nl80211_start_p2p_device,
15297 .flags = GENL_UNS_ADMIN_PERM,
15298 .internal_flags = NL80211_FLAG_NEED_WDEV |
15299 NL80211_FLAG_NEED_RTNL,
15300 },
15301 {
15302 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15303 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15304 .doit = nl80211_stop_p2p_device,
15305 .flags = GENL_UNS_ADMIN_PERM,
15306 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15307 NL80211_FLAG_NEED_RTNL,
15308 },
15309 {
15310 .cmd = NL80211_CMD_START_NAN,
15311 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15312 .doit = nl80211_start_nan,
15313 .flags = GENL_ADMIN_PERM,
15314 .internal_flags = NL80211_FLAG_NEED_WDEV |
15315 NL80211_FLAG_NEED_RTNL,
15316 },
15317 {
15318 .cmd = NL80211_CMD_STOP_NAN,
15319 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15320 .doit = nl80211_stop_nan,
15321 .flags = GENL_ADMIN_PERM,
15322 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15323 NL80211_FLAG_NEED_RTNL,
15324 },
15325 {
15326 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15327 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15328 .doit = nl80211_nan_add_func,
15329 .flags = GENL_ADMIN_PERM,
15330 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15331 NL80211_FLAG_NEED_RTNL,
15332 },
15333 {
15334 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15335 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15336 .doit = nl80211_nan_del_func,
15337 .flags = GENL_ADMIN_PERM,
15338 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15339 NL80211_FLAG_NEED_RTNL,
15340 },
15341 {
15342 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15343 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15344 .doit = nl80211_nan_change_config,
15345 .flags = GENL_ADMIN_PERM,
15346 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15347 NL80211_FLAG_NEED_RTNL,
15348 },
15349 {
15350 .cmd = NL80211_CMD_SET_MCAST_RATE,
15351 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15352 .doit = nl80211_set_mcast_rate,
15353 .flags = GENL_UNS_ADMIN_PERM,
15354 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15355 NL80211_FLAG_NEED_RTNL,
15356 },
15357 {
15358 .cmd = NL80211_CMD_SET_MAC_ACL,
15359 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15360 .doit = nl80211_set_mac_acl,
15361 .flags = GENL_UNS_ADMIN_PERM,
15362 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15363 NL80211_FLAG_NEED_RTNL,
15364 },
15365 {
15366 .cmd = NL80211_CMD_RADAR_DETECT,
15367 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15368 .doit = nl80211_start_radar_detection,
15369 .flags = GENL_UNS_ADMIN_PERM,
15370 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15371 NL80211_FLAG_NEED_RTNL,
15372 },
15373 {
15374 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15375 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15376 .doit = nl80211_get_protocol_features,
15377 },
15378 {
15379 .cmd = NL80211_CMD_UPDATE_FT_IES,
15380 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15381 .doit = nl80211_update_ft_ies,
15382 .flags = GENL_UNS_ADMIN_PERM,
15383 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15384 NL80211_FLAG_NEED_RTNL,
15385 },
15386 {
15387 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15388 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15389 .doit = nl80211_crit_protocol_start,
15390 .flags = GENL_UNS_ADMIN_PERM,
15391 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15392 NL80211_FLAG_NEED_RTNL,
15393 },
15394 {
15395 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15396 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15397 .doit = nl80211_crit_protocol_stop,
15398 .flags = GENL_UNS_ADMIN_PERM,
15399 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15400 NL80211_FLAG_NEED_RTNL,
15401 },
15402 {
15403 .cmd = NL80211_CMD_GET_COALESCE,
15404 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15405 .doit = nl80211_get_coalesce,
15406 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15407 NL80211_FLAG_NEED_RTNL,
15408 },
15409 {
15410 .cmd = NL80211_CMD_SET_COALESCE,
15411 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15412 .doit = nl80211_set_coalesce,
15413 .flags = GENL_UNS_ADMIN_PERM,
15414 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15415 NL80211_FLAG_NEED_RTNL,
15416 },
15417 {
15418 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15419 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15420 .doit = nl80211_channel_switch,
15421 .flags = GENL_UNS_ADMIN_PERM,
15422 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15423 NL80211_FLAG_NEED_RTNL,
15424 },
15425 {
15426 .cmd = NL80211_CMD_VENDOR,
15427 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15428 .doit = nl80211_vendor_cmd,
15429 .dumpit = nl80211_vendor_cmd_dump,
15430 .flags = GENL_UNS_ADMIN_PERM,
15431 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15432 NL80211_FLAG_NEED_RTNL |
15433 NL80211_FLAG_CLEAR_SKB,
15434 },
15435 {
15436 .cmd = NL80211_CMD_SET_QOS_MAP,
15437 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15438 .doit = nl80211_set_qos_map,
15439 .flags = GENL_UNS_ADMIN_PERM,
15440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15441 NL80211_FLAG_NEED_RTNL,
15442 },
15443 {
15444 .cmd = NL80211_CMD_ADD_TX_TS,
15445 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15446 .doit = nl80211_add_tx_ts,
15447 .flags = GENL_UNS_ADMIN_PERM,
15448 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15449 NL80211_FLAG_NEED_RTNL,
15450 },
15451 {
15452 .cmd = NL80211_CMD_DEL_TX_TS,
15453 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15454 .doit = nl80211_del_tx_ts,
15455 .flags = GENL_UNS_ADMIN_PERM,
15456 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15457 NL80211_FLAG_NEED_RTNL,
15458 },
15459 {
15460 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15461 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15462 .doit = nl80211_tdls_channel_switch,
15463 .flags = GENL_UNS_ADMIN_PERM,
15464 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15465 NL80211_FLAG_NEED_RTNL,
15466 },
15467 {
15468 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15469 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15470 .doit = nl80211_tdls_cancel_channel_switch,
15471 .flags = GENL_UNS_ADMIN_PERM,
15472 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15473 NL80211_FLAG_NEED_RTNL,
15474 },
15475 {
15476 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15477 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15478 .doit = nl80211_set_multicast_to_unicast,
15479 .flags = GENL_UNS_ADMIN_PERM,
15480 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15481 NL80211_FLAG_NEED_RTNL,
15482 },
15483 {
15484 .cmd = NL80211_CMD_SET_PMK,
15485 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15486 .doit = nl80211_set_pmk,
15487 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15488 NL80211_FLAG_NEED_RTNL |
15489 NL80211_FLAG_CLEAR_SKB,
15490 },
15491 {
15492 .cmd = NL80211_CMD_DEL_PMK,
15493 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15494 .doit = nl80211_del_pmk,
15495 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15496 NL80211_FLAG_NEED_RTNL,
15497 },
15498 {
15499 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15500 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15501 .doit = nl80211_external_auth,
15502 .flags = GENL_ADMIN_PERM,
15503 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15504 NL80211_FLAG_NEED_RTNL,
15505 },
15506 {
15507 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15508 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15509 .doit = nl80211_tx_control_port,
15510 .flags = GENL_UNS_ADMIN_PERM,
15511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15512 NL80211_FLAG_NEED_RTNL,
15513 },
15514 {
15515 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15516 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15517 .doit = nl80211_get_ftm_responder_stats,
15518 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15519 NL80211_FLAG_NEED_RTNL,
15520 },
15521 {
15522 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15523 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15524 .doit = nl80211_pmsr_start,
15525 .flags = GENL_UNS_ADMIN_PERM,
15526 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15527 NL80211_FLAG_NEED_RTNL,
15528 },
15529 {
15530 .cmd = NL80211_CMD_NOTIFY_RADAR,
15531 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15532 .doit = nl80211_notify_radar_detection,
15533 .flags = GENL_UNS_ADMIN_PERM,
15534 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15535 NL80211_FLAG_NEED_RTNL,
15536 },
15537 {
15538 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15539 .doit = nl80211_update_owe_info,
15540 .flags = GENL_ADMIN_PERM,
15541 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15542 NL80211_FLAG_NEED_RTNL,
15543 },
15544 {
15545 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15546 .doit = nl80211_probe_mesh_link,
15547 .flags = GENL_UNS_ADMIN_PERM,
15548 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15549 NL80211_FLAG_NEED_RTNL,
15550 },
15551 {
15552 .cmd = NL80211_CMD_SET_TID_CONFIG,
15553 .doit = nl80211_set_tid_config,
15554 .flags = GENL_UNS_ADMIN_PERM,
15555 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15556 NL80211_FLAG_NEED_RTNL,
15557 },
15558 };
15559
15560 static struct genl_family nl80211_fam __ro_after_init = {
15561 .name = NL80211_GENL_NAME, /* have users key off the name instead */
15562 .hdrsize = 0, /* no private header */
15563 .version = 1, /* no particular meaning now */
15564 .maxattr = NL80211_ATTR_MAX,
15565 .policy = nl80211_policy,
15566 .netnsok = true,
15567 .pre_doit = nl80211_pre_doit,
15568 .post_doit = nl80211_post_doit,
15569 .module = THIS_MODULE,
15570 .ops = nl80211_ops,
15571 .n_ops = ARRAY_SIZE(nl80211_ops),
15572 .small_ops = nl80211_small_ops,
15573 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15574 .mcgrps = nl80211_mcgrps,
15575 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15576 .parallel_ops = true,
15577 };
15578
15579 /* notification functions */
15580
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)15581 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15582 enum nl80211_commands cmd)
15583 {
15584 struct sk_buff *msg;
15585 struct nl80211_dump_wiphy_state state = {};
15586
15587 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15588 cmd != NL80211_CMD_DEL_WIPHY);
15589
15590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15591 if (!msg)
15592 return;
15593
15594 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15595 nlmsg_free(msg);
15596 return;
15597 }
15598
15599 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15600 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15601 }
15602
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)15603 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15604 struct wireless_dev *wdev,
15605 enum nl80211_commands cmd)
15606 {
15607 struct sk_buff *msg;
15608
15609 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15610 if (!msg)
15611 return;
15612
15613 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15614 nlmsg_free(msg);
15615 return;
15616 }
15617
15618 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15619 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15620 }
15621
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)15622 static int nl80211_add_scan_req(struct sk_buff *msg,
15623 struct cfg80211_registered_device *rdev)
15624 {
15625 struct cfg80211_scan_request *req = rdev->scan_req;
15626 struct nlattr *nest;
15627 int i;
15628 struct cfg80211_scan_info *info;
15629
15630 if (WARN_ON(!req))
15631 return 0;
15632
15633 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15634 if (!nest)
15635 goto nla_put_failure;
15636 for (i = 0; i < req->n_ssids; i++) {
15637 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15638 goto nla_put_failure;
15639 }
15640 nla_nest_end(msg, nest);
15641
15642 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15643 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15644 if (!nest)
15645 goto nla_put_failure;
15646 for (i = 0; i < req->n_channels; i++) {
15647 if (nla_put_u32(msg, i,
15648 ieee80211_channel_to_khz(req->channels[i])))
15649 goto nla_put_failure;
15650 }
15651 nla_nest_end(msg, nest);
15652 } else {
15653 nest = nla_nest_start_noflag(msg,
15654 NL80211_ATTR_SCAN_FREQUENCIES);
15655 if (!nest)
15656 goto nla_put_failure;
15657 for (i = 0; i < req->n_channels; i++) {
15658 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15659 goto nla_put_failure;
15660 }
15661 nla_nest_end(msg, nest);
15662 }
15663
15664 if (req->ie &&
15665 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15666 goto nla_put_failure;
15667
15668 if (req->flags &&
15669 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15670 goto nla_put_failure;
15671
15672 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15673 &rdev->scan_req->info;
15674 if (info->scan_start_tsf &&
15675 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15676 info->scan_start_tsf, NL80211_BSS_PAD) ||
15677 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15678 info->tsf_bssid)))
15679 goto nla_put_failure;
15680
15681 return 0;
15682 nla_put_failure:
15683 return -ENOBUFS;
15684 }
15685
nl80211_prep_scan_msg(struct sk_buff * msg,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 portid,u32 seq,int flags,u32 cmd)15686 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15687 struct cfg80211_registered_device *rdev,
15688 struct wireless_dev *wdev,
15689 u32 portid, u32 seq, int flags,
15690 u32 cmd)
15691 {
15692 void *hdr;
15693
15694 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15695 if (!hdr)
15696 return -1;
15697
15698 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15699 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15700 wdev->netdev->ifindex)) ||
15701 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15702 NL80211_ATTR_PAD))
15703 goto nla_put_failure;
15704
15705 /* ignore errors and send incomplete event anyway */
15706 nl80211_add_scan_req(msg, rdev);
15707
15708 genlmsg_end(msg, hdr);
15709 return 0;
15710
15711 nla_put_failure:
15712 genlmsg_cancel(msg, hdr);
15713 return -EMSGSIZE;
15714 }
15715
15716 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)15717 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15718 struct cfg80211_sched_scan_request *req, u32 cmd)
15719 {
15720 void *hdr;
15721
15722 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15723 if (!hdr)
15724 return -1;
15725
15726 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15727 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15728 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15729 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15730 NL80211_ATTR_PAD))
15731 goto nla_put_failure;
15732
15733 genlmsg_end(msg, hdr);
15734 return 0;
15735
15736 nla_put_failure:
15737 genlmsg_cancel(msg, hdr);
15738 return -EMSGSIZE;
15739 }
15740
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)15741 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15742 struct wireless_dev *wdev)
15743 {
15744 struct sk_buff *msg;
15745
15746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15747 if (!msg)
15748 return;
15749
15750 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15751 NL80211_CMD_TRIGGER_SCAN) < 0) {
15752 nlmsg_free(msg);
15753 return;
15754 }
15755
15756 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15757 NL80211_MCGRP_SCAN, GFP_KERNEL);
15758 }
15759
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)15760 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15761 struct wireless_dev *wdev, bool aborted)
15762 {
15763 struct sk_buff *msg;
15764
15765 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15766 if (!msg)
15767 return NULL;
15768
15769 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15770 aborted ? NL80211_CMD_SCAN_ABORTED :
15771 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15772 nlmsg_free(msg);
15773 return NULL;
15774 }
15775
15776 return msg;
15777 }
15778
15779 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)15780 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15781 struct sk_buff *msg)
15782 {
15783 if (!msg)
15784 return;
15785
15786 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15787 NL80211_MCGRP_SCAN, GFP_KERNEL);
15788 }
15789
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)15790 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15791 {
15792 struct sk_buff *msg;
15793
15794 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15795 if (!msg)
15796 return;
15797
15798 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15799 nlmsg_free(msg);
15800 return;
15801 }
15802
15803 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15804 NL80211_MCGRP_SCAN, GFP_KERNEL);
15805 }
15806
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)15807 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15808 struct regulatory_request *request)
15809 {
15810 /* Userspace can always count this one always being set */
15811 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15812 goto nla_put_failure;
15813
15814 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15815 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15816 NL80211_REGDOM_TYPE_WORLD))
15817 goto nla_put_failure;
15818 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15819 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15820 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15821 goto nla_put_failure;
15822 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15823 request->intersect) {
15824 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15825 NL80211_REGDOM_TYPE_INTERSECTION))
15826 goto nla_put_failure;
15827 } else {
15828 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15829 NL80211_REGDOM_TYPE_COUNTRY) ||
15830 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15831 request->alpha2))
15832 goto nla_put_failure;
15833 }
15834
15835 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15836 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15837
15838 if (wiphy &&
15839 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15840 goto nla_put_failure;
15841
15842 if (wiphy &&
15843 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15844 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15845 goto nla_put_failure;
15846 }
15847
15848 return true;
15849
15850 nla_put_failure:
15851 return false;
15852 }
15853
15854 /*
15855 * This can happen on global regulatory changes or device specific settings
15856 * based on custom regulatory domains.
15857 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)15858 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15859 struct regulatory_request *request)
15860 {
15861 struct sk_buff *msg;
15862 void *hdr;
15863
15864 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15865 if (!msg)
15866 return;
15867
15868 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15869 if (!hdr)
15870 goto nla_put_failure;
15871
15872 if (!nl80211_reg_change_event_fill(msg, request))
15873 goto nla_put_failure;
15874
15875 genlmsg_end(msg, hdr);
15876
15877 rcu_read_lock();
15878 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15879 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15880 rcu_read_unlock();
15881
15882 return;
15883
15884 nla_put_failure:
15885 nlmsg_free(msg);
15886 }
15887
nl80211_send_mlme_event(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,enum nl80211_commands cmd,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len)15888 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15889 struct net_device *netdev,
15890 const u8 *buf, size_t len,
15891 enum nl80211_commands cmd, gfp_t gfp,
15892 int uapsd_queues, const u8 *req_ies,
15893 size_t req_ies_len)
15894 {
15895 struct sk_buff *msg;
15896 void *hdr;
15897
15898 msg = nlmsg_new(100 + len + req_ies_len, gfp);
15899 if (!msg)
15900 return;
15901
15902 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15903 if (!hdr) {
15904 nlmsg_free(msg);
15905 return;
15906 }
15907
15908 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15909 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15910 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15911 (req_ies &&
15912 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15913 goto nla_put_failure;
15914
15915 if (uapsd_queues >= 0) {
15916 struct nlattr *nla_wmm =
15917 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15918 if (!nla_wmm)
15919 goto nla_put_failure;
15920
15921 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15922 uapsd_queues))
15923 goto nla_put_failure;
15924
15925 nla_nest_end(msg, nla_wmm);
15926 }
15927
15928 genlmsg_end(msg, hdr);
15929
15930 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15931 NL80211_MCGRP_MLME, gfp);
15932 return;
15933
15934 nla_put_failure:
15935 nlmsg_free(msg);
15936 }
15937
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15938 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15939 struct net_device *netdev, const u8 *buf,
15940 size_t len, gfp_t gfp)
15941 {
15942 nl80211_send_mlme_event(rdev, netdev, buf, len,
15943 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15944 }
15945
nl80211_send_rx_assoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len)15946 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15947 struct net_device *netdev, const u8 *buf,
15948 size_t len, gfp_t gfp, int uapsd_queues,
15949 const u8 *req_ies, size_t req_ies_len)
15950 {
15951 nl80211_send_mlme_event(rdev, netdev, buf, len,
15952 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15953 req_ies, req_ies_len);
15954 }
15955
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15956 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15957 struct net_device *netdev, const u8 *buf,
15958 size_t len, gfp_t gfp)
15959 {
15960 nl80211_send_mlme_event(rdev, netdev, buf, len,
15961 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15962 }
15963
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15964 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15965 struct net_device *netdev, const u8 *buf,
15966 size_t len, gfp_t gfp)
15967 {
15968 nl80211_send_mlme_event(rdev, netdev, buf, len,
15969 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15970 }
15971
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)15972 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15973 size_t len)
15974 {
15975 struct wireless_dev *wdev = dev->ieee80211_ptr;
15976 struct wiphy *wiphy = wdev->wiphy;
15977 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15978 const struct ieee80211_mgmt *mgmt = (void *)buf;
15979 u32 cmd;
15980
15981 if (WARN_ON(len < 2))
15982 return;
15983
15984 if (ieee80211_is_deauth(mgmt->frame_control)) {
15985 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15986 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15987 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15988 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15989 if (wdev->unprot_beacon_reported &&
15990 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15991 return;
15992 cmd = NL80211_CMD_UNPROT_BEACON;
15993 wdev->unprot_beacon_reported = jiffies;
15994 } else {
15995 return;
15996 }
15997
15998 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15999 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16000 NULL, 0);
16001 }
16002 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16003
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)16004 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16005 struct net_device *netdev, int cmd,
16006 const u8 *addr, gfp_t gfp)
16007 {
16008 struct sk_buff *msg;
16009 void *hdr;
16010
16011 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16012 if (!msg)
16013 return;
16014
16015 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16016 if (!hdr) {
16017 nlmsg_free(msg);
16018 return;
16019 }
16020
16021 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16022 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16023 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16024 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16025 goto nla_put_failure;
16026
16027 genlmsg_end(msg, hdr);
16028
16029 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16030 NL80211_MCGRP_MLME, gfp);
16031 return;
16032
16033 nla_put_failure:
16034 nlmsg_free(msg);
16035 }
16036
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)16037 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16038 struct net_device *netdev, const u8 *addr,
16039 gfp_t gfp)
16040 {
16041 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16042 addr, gfp);
16043 }
16044
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)16045 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16046 struct net_device *netdev, const u8 *addr,
16047 gfp_t gfp)
16048 {
16049 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16050 addr, gfp);
16051 }
16052
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)16053 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16054 struct net_device *netdev,
16055 struct cfg80211_connect_resp_params *cr,
16056 gfp_t gfp)
16057 {
16058 struct sk_buff *msg;
16059 void *hdr;
16060
16061 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16062 cr->fils.kek_len + cr->fils.pmk_len +
16063 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16064 if (!msg)
16065 return;
16066
16067 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16068 if (!hdr) {
16069 nlmsg_free(msg);
16070 return;
16071 }
16072
16073 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16074 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16075 (cr->bssid &&
16076 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16077 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16078 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16079 cr->status) ||
16080 (cr->status < 0 &&
16081 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16082 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16083 cr->timeout_reason))) ||
16084 (cr->req_ie &&
16085 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16086 (cr->resp_ie &&
16087 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16088 cr->resp_ie)) ||
16089 (cr->fils.update_erp_next_seq_num &&
16090 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16091 cr->fils.erp_next_seq_num)) ||
16092 (cr->status == WLAN_STATUS_SUCCESS &&
16093 ((cr->fils.kek &&
16094 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16095 cr->fils.kek)) ||
16096 (cr->fils.pmk &&
16097 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16098 (cr->fils.pmkid &&
16099 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16100 goto nla_put_failure;
16101
16102 genlmsg_end(msg, hdr);
16103
16104 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16105 NL80211_MCGRP_MLME, gfp);
16106 return;
16107
16108 nla_put_failure:
16109 nlmsg_free(msg);
16110 }
16111
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)16112 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16113 struct net_device *netdev,
16114 struct cfg80211_roam_info *info, gfp_t gfp)
16115 {
16116 struct sk_buff *msg;
16117 void *hdr;
16118 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16119
16120 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16121 info->fils.kek_len + info->fils.pmk_len +
16122 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16123 if (!msg)
16124 return;
16125
16126 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16127 if (!hdr) {
16128 nlmsg_free(msg);
16129 return;
16130 }
16131
16132 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16133 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16134 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16135 (info->req_ie &&
16136 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16137 info->req_ie)) ||
16138 (info->resp_ie &&
16139 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16140 info->resp_ie)) ||
16141 (info->fils.update_erp_next_seq_num &&
16142 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16143 info->fils.erp_next_seq_num)) ||
16144 (info->fils.kek &&
16145 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16146 info->fils.kek)) ||
16147 (info->fils.pmk &&
16148 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16149 (info->fils.pmkid &&
16150 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16151 goto nla_put_failure;
16152
16153 genlmsg_end(msg, hdr);
16154
16155 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16156 NL80211_MCGRP_MLME, gfp);
16157 return;
16158
16159 nla_put_failure:
16160 nlmsg_free(msg);
16161 }
16162
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid)16163 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16164 struct net_device *netdev, const u8 *bssid)
16165 {
16166 struct sk_buff *msg;
16167 void *hdr;
16168
16169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16170 if (!msg)
16171 return;
16172
16173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16174 if (!hdr) {
16175 nlmsg_free(msg);
16176 return;
16177 }
16178
16179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16180 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16181 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16182 goto nla_put_failure;
16183
16184 genlmsg_end(msg, hdr);
16185
16186 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16187 NL80211_MCGRP_MLME, GFP_KERNEL);
16188 return;
16189
16190 nla_put_failure:
16191 nlmsg_free(msg);
16192 }
16193
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)16194 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16195 struct net_device *netdev, u16 reason,
16196 const u8 *ie, size_t ie_len, bool from_ap)
16197 {
16198 struct sk_buff *msg;
16199 void *hdr;
16200
16201 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16202 if (!msg)
16203 return;
16204
16205 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16206 if (!hdr) {
16207 nlmsg_free(msg);
16208 return;
16209 }
16210
16211 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16212 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16213 (reason &&
16214 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16215 (from_ap &&
16216 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16217 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16218 goto nla_put_failure;
16219
16220 genlmsg_end(msg, hdr);
16221
16222 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16223 NL80211_MCGRP_MLME, GFP_KERNEL);
16224 return;
16225
16226 nla_put_failure:
16227 nlmsg_free(msg);
16228 }
16229
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)16230 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16231 struct net_device *netdev, const u8 *bssid,
16232 gfp_t gfp)
16233 {
16234 struct sk_buff *msg;
16235 void *hdr;
16236
16237 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16238 if (!msg)
16239 return;
16240
16241 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16242 if (!hdr) {
16243 nlmsg_free(msg);
16244 return;
16245 }
16246
16247 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16248 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16249 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16250 goto nla_put_failure;
16251
16252 genlmsg_end(msg, hdr);
16253
16254 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16255 NL80211_MCGRP_MLME, gfp);
16256 return;
16257
16258 nla_put_failure:
16259 nlmsg_free(msg);
16260 }
16261
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)16262 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16263 const u8 *ie, u8 ie_len,
16264 int sig_dbm, gfp_t gfp)
16265 {
16266 struct wireless_dev *wdev = dev->ieee80211_ptr;
16267 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16268 struct sk_buff *msg;
16269 void *hdr;
16270
16271 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16272 return;
16273
16274 trace_cfg80211_notify_new_peer_candidate(dev, addr);
16275
16276 msg = nlmsg_new(100 + ie_len, gfp);
16277 if (!msg)
16278 return;
16279
16280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16281 if (!hdr) {
16282 nlmsg_free(msg);
16283 return;
16284 }
16285
16286 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16287 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16288 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16289 (ie_len && ie &&
16290 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16291 (sig_dbm &&
16292 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16293 goto nla_put_failure;
16294
16295 genlmsg_end(msg, hdr);
16296
16297 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16298 NL80211_MCGRP_MLME, gfp);
16299 return;
16300
16301 nla_put_failure:
16302 nlmsg_free(msg);
16303 }
16304 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16305
nl80211_michael_mic_failure(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,enum nl80211_key_type key_type,int key_id,const u8 * tsc,gfp_t gfp)16306 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16307 struct net_device *netdev, const u8 *addr,
16308 enum nl80211_key_type key_type, int key_id,
16309 const u8 *tsc, gfp_t gfp)
16310 {
16311 struct sk_buff *msg;
16312 void *hdr;
16313
16314 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16315 if (!msg)
16316 return;
16317
16318 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16319 if (!hdr) {
16320 nlmsg_free(msg);
16321 return;
16322 }
16323
16324 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16325 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16326 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16327 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16328 (key_id != -1 &&
16329 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16330 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16331 goto nla_put_failure;
16332
16333 genlmsg_end(msg, hdr);
16334
16335 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16336 NL80211_MCGRP_MLME, gfp);
16337 return;
16338
16339 nla_put_failure:
16340 nlmsg_free(msg);
16341 }
16342
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)16343 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16344 struct ieee80211_channel *channel_before,
16345 struct ieee80211_channel *channel_after)
16346 {
16347 struct sk_buff *msg;
16348 void *hdr;
16349 struct nlattr *nl_freq;
16350
16351 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16352 if (!msg)
16353 return;
16354
16355 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16356 if (!hdr) {
16357 nlmsg_free(msg);
16358 return;
16359 }
16360
16361 /*
16362 * Since we are applying the beacon hint to a wiphy we know its
16363 * wiphy_idx is valid
16364 */
16365 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16366 goto nla_put_failure;
16367
16368 /* Before */
16369 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16370 if (!nl_freq)
16371 goto nla_put_failure;
16372
16373 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16374 goto nla_put_failure;
16375 nla_nest_end(msg, nl_freq);
16376
16377 /* After */
16378 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16379 if (!nl_freq)
16380 goto nla_put_failure;
16381
16382 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16383 goto nla_put_failure;
16384 nla_nest_end(msg, nl_freq);
16385
16386 genlmsg_end(msg, hdr);
16387
16388 rcu_read_lock();
16389 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16390 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16391 rcu_read_unlock();
16392
16393 return;
16394
16395 nla_put_failure:
16396 nlmsg_free(msg);
16397 }
16398
nl80211_send_remain_on_chan_event(int cmd,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)16399 static void nl80211_send_remain_on_chan_event(
16400 int cmd, struct cfg80211_registered_device *rdev,
16401 struct wireless_dev *wdev, u64 cookie,
16402 struct ieee80211_channel *chan,
16403 unsigned int duration, gfp_t gfp)
16404 {
16405 struct sk_buff *msg;
16406 void *hdr;
16407
16408 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16409 if (!msg)
16410 return;
16411
16412 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16413 if (!hdr) {
16414 nlmsg_free(msg);
16415 return;
16416 }
16417
16418 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16419 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16420 wdev->netdev->ifindex)) ||
16421 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16422 NL80211_ATTR_PAD) ||
16423 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16424 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16425 NL80211_CHAN_NO_HT) ||
16426 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16427 NL80211_ATTR_PAD))
16428 goto nla_put_failure;
16429
16430 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16431 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16432 goto nla_put_failure;
16433
16434 genlmsg_end(msg, hdr);
16435
16436 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16437 NL80211_MCGRP_MLME, gfp);
16438 return;
16439
16440 nla_put_failure:
16441 nlmsg_free(msg);
16442 }
16443
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)16444 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16445 struct ieee80211_channel *chan,
16446 unsigned int duration, gfp_t gfp)
16447 {
16448 struct wiphy *wiphy = wdev->wiphy;
16449 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16450
16451 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16452 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16453 rdev, wdev, cookie, chan,
16454 duration, gfp);
16455 }
16456 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16457
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)16458 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16459 struct ieee80211_channel *chan,
16460 gfp_t gfp)
16461 {
16462 struct wiphy *wiphy = wdev->wiphy;
16463 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16464
16465 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16466 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16467 rdev, wdev, cookie, chan, 0, gfp);
16468 }
16469 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16470
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)16471 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16472 struct ieee80211_channel *chan,
16473 gfp_t gfp)
16474 {
16475 struct wiphy *wiphy = wdev->wiphy;
16476 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16477
16478 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16479 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16480 rdev, wdev, cookie, chan, 0, gfp);
16481 }
16482 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16483
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)16484 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16485 struct station_info *sinfo, gfp_t gfp)
16486 {
16487 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16488 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16489 struct sk_buff *msg;
16490
16491 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16492
16493 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16494 if (!msg)
16495 return;
16496
16497 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16498 rdev, dev, mac_addr, sinfo) < 0) {
16499 nlmsg_free(msg);
16500 return;
16501 }
16502
16503 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16504 NL80211_MCGRP_MLME, gfp);
16505 }
16506 EXPORT_SYMBOL(cfg80211_new_sta);
16507
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)16508 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16509 struct station_info *sinfo, gfp_t gfp)
16510 {
16511 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16512 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16513 struct sk_buff *msg;
16514 struct station_info empty_sinfo = {};
16515
16516 if (!sinfo)
16517 sinfo = &empty_sinfo;
16518
16519 trace_cfg80211_del_sta(dev, mac_addr);
16520
16521 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16522 if (!msg) {
16523 cfg80211_sinfo_release_content(sinfo);
16524 return;
16525 }
16526
16527 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16528 rdev, dev, mac_addr, sinfo) < 0) {
16529 nlmsg_free(msg);
16530 return;
16531 }
16532
16533 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16534 NL80211_MCGRP_MLME, gfp);
16535 }
16536 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16537
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)16538 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16539 enum nl80211_connect_failed_reason reason,
16540 gfp_t gfp)
16541 {
16542 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16543 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16544 struct sk_buff *msg;
16545 void *hdr;
16546
16547 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16548 if (!msg)
16549 return;
16550
16551 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16552 if (!hdr) {
16553 nlmsg_free(msg);
16554 return;
16555 }
16556
16557 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16558 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16559 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16560 goto nla_put_failure;
16561
16562 genlmsg_end(msg, hdr);
16563
16564 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16565 NL80211_MCGRP_MLME, gfp);
16566 return;
16567
16568 nla_put_failure:
16569 nlmsg_free(msg);
16570 }
16571 EXPORT_SYMBOL(cfg80211_conn_failed);
16572
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)16573 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16574 const u8 *addr, gfp_t gfp)
16575 {
16576 struct wireless_dev *wdev = dev->ieee80211_ptr;
16577 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16578 struct sk_buff *msg;
16579 void *hdr;
16580 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16581
16582 if (!nlportid)
16583 return false;
16584
16585 msg = nlmsg_new(100, gfp);
16586 if (!msg)
16587 return true;
16588
16589 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16590 if (!hdr) {
16591 nlmsg_free(msg);
16592 return true;
16593 }
16594
16595 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16596 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16597 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16598 goto nla_put_failure;
16599
16600 genlmsg_end(msg, hdr);
16601 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16602 return true;
16603
16604 nla_put_failure:
16605 nlmsg_free(msg);
16606 return true;
16607 }
16608
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)16609 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16610 const u8 *addr, gfp_t gfp)
16611 {
16612 struct wireless_dev *wdev = dev->ieee80211_ptr;
16613 bool ret;
16614
16615 trace_cfg80211_rx_spurious_frame(dev, addr);
16616
16617 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16618 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16619 trace_cfg80211_return_bool(false);
16620 return false;
16621 }
16622 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16623 addr, gfp);
16624 trace_cfg80211_return_bool(ret);
16625 return ret;
16626 }
16627 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16628
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)16629 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16630 const u8 *addr, gfp_t gfp)
16631 {
16632 struct wireless_dev *wdev = dev->ieee80211_ptr;
16633 bool ret;
16634
16635 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16636
16637 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16638 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16639 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16640 trace_cfg80211_return_bool(false);
16641 return false;
16642 }
16643 ret = __nl80211_unexpected_frame(dev,
16644 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16645 addr, gfp);
16646 trace_cfg80211_return_bool(ret);
16647 return ret;
16648 }
16649 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16650
nl80211_send_mgmt(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 nlportid,int freq,int sig_dbm,const u8 * buf,size_t len,u32 flags,gfp_t gfp)16651 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16652 struct wireless_dev *wdev, u32 nlportid,
16653 int freq, int sig_dbm,
16654 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16655 {
16656 struct net_device *netdev = wdev->netdev;
16657 struct sk_buff *msg;
16658 void *hdr;
16659
16660 msg = nlmsg_new(100 + len, gfp);
16661 if (!msg)
16662 return -ENOMEM;
16663
16664 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16665 if (!hdr) {
16666 nlmsg_free(msg);
16667 return -ENOMEM;
16668 }
16669
16670 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16671 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16672 netdev->ifindex)) ||
16673 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16674 NL80211_ATTR_PAD) ||
16675 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16676 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16677 (sig_dbm &&
16678 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16679 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16680 (flags &&
16681 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16682 goto nla_put_failure;
16683
16684 genlmsg_end(msg, hdr);
16685
16686 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16687
16688 nla_put_failure:
16689 nlmsg_free(msg);
16690 return -ENOBUFS;
16691 }
16692
nl80211_frame_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp,enum nl80211_commands command)16693 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16694 const u8 *buf, size_t len, bool ack,
16695 gfp_t gfp, enum nl80211_commands command)
16696 {
16697 struct wiphy *wiphy = wdev->wiphy;
16698 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16699 struct net_device *netdev = wdev->netdev;
16700 struct sk_buff *msg;
16701 void *hdr;
16702
16703 if (command == NL80211_CMD_FRAME_TX_STATUS)
16704 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16705 else
16706 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16707
16708 msg = nlmsg_new(100 + len, gfp);
16709 if (!msg)
16710 return;
16711
16712 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16713 if (!hdr) {
16714 nlmsg_free(msg);
16715 return;
16716 }
16717
16718 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16719 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16720 netdev->ifindex)) ||
16721 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16722 NL80211_ATTR_PAD) ||
16723 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16724 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16725 NL80211_ATTR_PAD) ||
16726 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16727 goto nla_put_failure;
16728
16729 genlmsg_end(msg, hdr);
16730
16731 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16732 NL80211_MCGRP_MLME, gfp);
16733 return;
16734
16735 nla_put_failure:
16736 nlmsg_free(msg);
16737 }
16738
cfg80211_control_port_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)16739 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16740 const u8 *buf, size_t len, bool ack,
16741 gfp_t gfp)
16742 {
16743 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16744 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16745 }
16746 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16747
cfg80211_mgmt_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)16748 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16749 const u8 *buf, size_t len, bool ack, gfp_t gfp)
16750 {
16751 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16752 NL80211_CMD_FRAME_TX_STATUS);
16753 }
16754 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16755
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,gfp_t gfp)16756 static int __nl80211_rx_control_port(struct net_device *dev,
16757 struct sk_buff *skb,
16758 bool unencrypted, gfp_t gfp)
16759 {
16760 struct wireless_dev *wdev = dev->ieee80211_ptr;
16761 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16762 struct ethhdr *ehdr = eth_hdr(skb);
16763 const u8 *addr = ehdr->h_source;
16764 u16 proto = be16_to_cpu(skb->protocol);
16765 struct sk_buff *msg;
16766 void *hdr;
16767 struct nlattr *frame;
16768
16769 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16770
16771 if (!nlportid)
16772 return -ENOENT;
16773
16774 msg = nlmsg_new(100 + skb->len, gfp);
16775 if (!msg)
16776 return -ENOMEM;
16777
16778 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16779 if (!hdr) {
16780 nlmsg_free(msg);
16781 return -ENOBUFS;
16782 }
16783
16784 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16785 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16786 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16787 NL80211_ATTR_PAD) ||
16788 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16789 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16790 (unencrypted && nla_put_flag(msg,
16791 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16792 goto nla_put_failure;
16793
16794 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16795 if (!frame)
16796 goto nla_put_failure;
16797
16798 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16799 genlmsg_end(msg, hdr);
16800
16801 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16802
16803 nla_put_failure:
16804 nlmsg_free(msg);
16805 return -ENOBUFS;
16806 }
16807
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted)16808 bool cfg80211_rx_control_port(struct net_device *dev,
16809 struct sk_buff *skb, bool unencrypted)
16810 {
16811 int ret;
16812
16813 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16814 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16815 trace_cfg80211_return_bool(ret == 0);
16816 return ret == 0;
16817 }
16818 EXPORT_SYMBOL(cfg80211_rx_control_port);
16819
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)16820 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16821 const char *mac, gfp_t gfp)
16822 {
16823 struct wireless_dev *wdev = dev->ieee80211_ptr;
16824 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16825 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16826 void **cb;
16827
16828 if (!msg)
16829 return NULL;
16830
16831 cb = (void **)msg->cb;
16832
16833 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16834 if (!cb[0]) {
16835 nlmsg_free(msg);
16836 return NULL;
16837 }
16838
16839 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16840 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16841 goto nla_put_failure;
16842
16843 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16844 goto nla_put_failure;
16845
16846 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16847 if (!cb[1])
16848 goto nla_put_failure;
16849
16850 cb[2] = rdev;
16851
16852 return msg;
16853 nla_put_failure:
16854 nlmsg_free(msg);
16855 return NULL;
16856 }
16857
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)16858 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16859 {
16860 void **cb = (void **)msg->cb;
16861 struct cfg80211_registered_device *rdev = cb[2];
16862
16863 nla_nest_end(msg, cb[1]);
16864 genlmsg_end(msg, cb[0]);
16865
16866 memset(msg->cb, 0, sizeof(msg->cb));
16867
16868 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16869 NL80211_MCGRP_MLME, gfp);
16870 }
16871
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)16872 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16873 enum nl80211_cqm_rssi_threshold_event rssi_event,
16874 s32 rssi_level, gfp_t gfp)
16875 {
16876 struct sk_buff *msg;
16877 struct wireless_dev *wdev = dev->ieee80211_ptr;
16878 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16879
16880 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16881
16882 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16883 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16884 return;
16885
16886 if (wdev->cqm_config) {
16887 wdev->cqm_config->last_rssi_event_value = rssi_level;
16888
16889 cfg80211_cqm_rssi_update(rdev, dev);
16890
16891 if (rssi_level == 0)
16892 rssi_level = wdev->cqm_config->last_rssi_event_value;
16893 }
16894
16895 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16896 if (!msg)
16897 return;
16898
16899 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16900 rssi_event))
16901 goto nla_put_failure;
16902
16903 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16904 rssi_level))
16905 goto nla_put_failure;
16906
16907 cfg80211_send_cqm(msg, gfp);
16908
16909 return;
16910
16911 nla_put_failure:
16912 nlmsg_free(msg);
16913 }
16914 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16915
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)16916 void cfg80211_cqm_txe_notify(struct net_device *dev,
16917 const u8 *peer, u32 num_packets,
16918 u32 rate, u32 intvl, gfp_t gfp)
16919 {
16920 struct sk_buff *msg;
16921
16922 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16923 if (!msg)
16924 return;
16925
16926 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16927 goto nla_put_failure;
16928
16929 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16930 goto nla_put_failure;
16931
16932 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16933 goto nla_put_failure;
16934
16935 cfg80211_send_cqm(msg, gfp);
16936 return;
16937
16938 nla_put_failure:
16939 nlmsg_free(msg);
16940 }
16941 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16942
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)16943 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16944 const u8 *peer, u32 num_packets, gfp_t gfp)
16945 {
16946 struct sk_buff *msg;
16947
16948 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16949
16950 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16951 if (!msg)
16952 return;
16953
16954 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16955 goto nla_put_failure;
16956
16957 cfg80211_send_cqm(msg, gfp);
16958 return;
16959
16960 nla_put_failure:
16961 nlmsg_free(msg);
16962 }
16963 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16964
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)16965 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16966 {
16967 struct sk_buff *msg;
16968
16969 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16970 if (!msg)
16971 return;
16972
16973 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16974 goto nla_put_failure;
16975
16976 cfg80211_send_cqm(msg, gfp);
16977 return;
16978
16979 nla_put_failure:
16980 nlmsg_free(msg);
16981 }
16982 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16983
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)16984 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16985 struct net_device *netdev, const u8 *bssid,
16986 const u8 *replay_ctr, gfp_t gfp)
16987 {
16988 struct sk_buff *msg;
16989 struct nlattr *rekey_attr;
16990 void *hdr;
16991
16992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16993 if (!msg)
16994 return;
16995
16996 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16997 if (!hdr) {
16998 nlmsg_free(msg);
16999 return;
17000 }
17001
17002 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17003 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17004 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17005 goto nla_put_failure;
17006
17007 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17008 if (!rekey_attr)
17009 goto nla_put_failure;
17010
17011 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17012 NL80211_REPLAY_CTR_LEN, replay_ctr))
17013 goto nla_put_failure;
17014
17015 nla_nest_end(msg, rekey_attr);
17016
17017 genlmsg_end(msg, hdr);
17018
17019 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17020 NL80211_MCGRP_MLME, gfp);
17021 return;
17022
17023 nla_put_failure:
17024 nlmsg_free(msg);
17025 }
17026
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)17027 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17028 const u8 *replay_ctr, gfp_t gfp)
17029 {
17030 struct wireless_dev *wdev = dev->ieee80211_ptr;
17031 struct wiphy *wiphy = wdev->wiphy;
17032 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17033
17034 trace_cfg80211_gtk_rekey_notify(dev, bssid);
17035 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17036 }
17037 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17038
17039 static void
nl80211_pmksa_candidate_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,int index,const u8 * bssid,bool preauth,gfp_t gfp)17040 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17041 struct net_device *netdev, int index,
17042 const u8 *bssid, bool preauth, gfp_t gfp)
17043 {
17044 struct sk_buff *msg;
17045 struct nlattr *attr;
17046 void *hdr;
17047
17048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17049 if (!msg)
17050 return;
17051
17052 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17053 if (!hdr) {
17054 nlmsg_free(msg);
17055 return;
17056 }
17057
17058 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17059 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17060 goto nla_put_failure;
17061
17062 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17063 if (!attr)
17064 goto nla_put_failure;
17065
17066 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17067 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17068 (preauth &&
17069 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17070 goto nla_put_failure;
17071
17072 nla_nest_end(msg, attr);
17073
17074 genlmsg_end(msg, hdr);
17075
17076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17077 NL80211_MCGRP_MLME, gfp);
17078 return;
17079
17080 nla_put_failure:
17081 nlmsg_free(msg);
17082 }
17083
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)17084 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17085 const u8 *bssid, bool preauth, gfp_t gfp)
17086 {
17087 struct wireless_dev *wdev = dev->ieee80211_ptr;
17088 struct wiphy *wiphy = wdev->wiphy;
17089 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17090
17091 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17092 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17093 }
17094 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17095
nl80211_ch_switch_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_chan_def * chandef,gfp_t gfp,enum nl80211_commands notif,u8 count)17096 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17097 struct net_device *netdev,
17098 struct cfg80211_chan_def *chandef,
17099 gfp_t gfp,
17100 enum nl80211_commands notif,
17101 u8 count)
17102 {
17103 struct sk_buff *msg;
17104 void *hdr;
17105
17106 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17107 if (!msg)
17108 return;
17109
17110 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17111 if (!hdr) {
17112 nlmsg_free(msg);
17113 return;
17114 }
17115
17116 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17117 goto nla_put_failure;
17118
17119 if (nl80211_send_chandef(msg, chandef))
17120 goto nla_put_failure;
17121
17122 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
17123 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
17124 goto nla_put_failure;
17125
17126 genlmsg_end(msg, hdr);
17127
17128 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17129 NL80211_MCGRP_MLME, gfp);
17130 return;
17131
17132 nla_put_failure:
17133 nlmsg_free(msg);
17134 }
17135
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef)17136 void cfg80211_ch_switch_notify(struct net_device *dev,
17137 struct cfg80211_chan_def *chandef)
17138 {
17139 struct wireless_dev *wdev = dev->ieee80211_ptr;
17140 struct wiphy *wiphy = wdev->wiphy;
17141 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17142
17143 ASSERT_WDEV_LOCK(wdev);
17144
17145 trace_cfg80211_ch_switch_notify(dev, chandef);
17146
17147 wdev->chandef = *chandef;
17148 wdev->preset_chandef = *chandef;
17149
17150 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
17151 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
17152 !WARN_ON(!wdev->current_bss))
17153 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17154
17155 cfg80211_sched_dfs_chan_update(rdev);
17156
17157 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17158 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
17159 }
17160 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17161
cfg80211_ch_switch_started_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,u8 count)17162 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17163 struct cfg80211_chan_def *chandef,
17164 u8 count)
17165 {
17166 struct wireless_dev *wdev = dev->ieee80211_ptr;
17167 struct wiphy *wiphy = wdev->wiphy;
17168 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17169
17170 trace_cfg80211_ch_switch_started_notify(dev, chandef);
17171
17172 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17173 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
17174 }
17175 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17176
17177 void
nl80211_radar_notify(struct cfg80211_registered_device * rdev,const struct cfg80211_chan_def * chandef,enum nl80211_radar_event event,struct net_device * netdev,gfp_t gfp)17178 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17179 const struct cfg80211_chan_def *chandef,
17180 enum nl80211_radar_event event,
17181 struct net_device *netdev, gfp_t gfp)
17182 {
17183 struct sk_buff *msg;
17184 void *hdr;
17185
17186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17187 if (!msg)
17188 return;
17189
17190 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17191 if (!hdr) {
17192 nlmsg_free(msg);
17193 return;
17194 }
17195
17196 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17197 goto nla_put_failure;
17198
17199 /* NOP and radar events don't need a netdev parameter */
17200 if (netdev) {
17201 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17202
17203 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17204 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17205 NL80211_ATTR_PAD))
17206 goto nla_put_failure;
17207 }
17208
17209 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17210 goto nla_put_failure;
17211
17212 if (nl80211_send_chandef(msg, chandef))
17213 goto nla_put_failure;
17214
17215 genlmsg_end(msg, hdr);
17216
17217 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17218 NL80211_MCGRP_MLME, gfp);
17219 return;
17220
17221 nla_put_failure:
17222 nlmsg_free(msg);
17223 }
17224
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)17225 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17226 struct sta_opmode_info *sta_opmode,
17227 gfp_t gfp)
17228 {
17229 struct sk_buff *msg;
17230 struct wireless_dev *wdev = dev->ieee80211_ptr;
17231 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17232 void *hdr;
17233
17234 if (WARN_ON(!mac))
17235 return;
17236
17237 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17238 if (!msg)
17239 return;
17240
17241 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17242 if (!hdr) {
17243 nlmsg_free(msg);
17244 return;
17245 }
17246
17247 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17248 goto nla_put_failure;
17249
17250 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17251 goto nla_put_failure;
17252
17253 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17254 goto nla_put_failure;
17255
17256 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17257 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17258 goto nla_put_failure;
17259
17260 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17261 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17262 goto nla_put_failure;
17263
17264 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17265 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17266 goto nla_put_failure;
17267
17268 genlmsg_end(msg, hdr);
17269
17270 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17271 NL80211_MCGRP_MLME, gfp);
17272
17273 return;
17274
17275 nla_put_failure:
17276 nlmsg_free(msg);
17277 }
17278 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17279
cfg80211_probe_status(struct net_device * dev,const u8 * addr,u64 cookie,bool acked,s32 ack_signal,bool is_valid_ack_signal,gfp_t gfp)17280 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17281 u64 cookie, bool acked, s32 ack_signal,
17282 bool is_valid_ack_signal, gfp_t gfp)
17283 {
17284 struct wireless_dev *wdev = dev->ieee80211_ptr;
17285 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17286 struct sk_buff *msg;
17287 void *hdr;
17288
17289 trace_cfg80211_probe_status(dev, addr, cookie, acked);
17290
17291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17292
17293 if (!msg)
17294 return;
17295
17296 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17297 if (!hdr) {
17298 nlmsg_free(msg);
17299 return;
17300 }
17301
17302 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17303 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17304 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17305 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17306 NL80211_ATTR_PAD) ||
17307 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17308 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17309 ack_signal)))
17310 goto nla_put_failure;
17311
17312 genlmsg_end(msg, hdr);
17313
17314 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17315 NL80211_MCGRP_MLME, gfp);
17316 return;
17317
17318 nla_put_failure:
17319 nlmsg_free(msg);
17320 }
17321 EXPORT_SYMBOL(cfg80211_probe_status);
17322
cfg80211_report_obss_beacon_khz(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)17323 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17324 size_t len, int freq, int sig_dbm)
17325 {
17326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17327 struct sk_buff *msg;
17328 void *hdr;
17329 struct cfg80211_beacon_registration *reg;
17330
17331 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17332
17333 spin_lock_bh(&rdev->beacon_registrations_lock);
17334 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17335 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17336 if (!msg) {
17337 spin_unlock_bh(&rdev->beacon_registrations_lock);
17338 return;
17339 }
17340
17341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17342 if (!hdr)
17343 goto nla_put_failure;
17344
17345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17346 (freq &&
17347 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17348 KHZ_TO_MHZ(freq)) ||
17349 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17350 freq % 1000))) ||
17351 (sig_dbm &&
17352 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17353 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17354 goto nla_put_failure;
17355
17356 genlmsg_end(msg, hdr);
17357
17358 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17359 }
17360 spin_unlock_bh(&rdev->beacon_registrations_lock);
17361 return;
17362
17363 nla_put_failure:
17364 spin_unlock_bh(&rdev->beacon_registrations_lock);
17365 nlmsg_free(msg);
17366 }
17367 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17368
17369 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)17370 static int cfg80211_net_detect_results(struct sk_buff *msg,
17371 struct cfg80211_wowlan_wakeup *wakeup)
17372 {
17373 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17374 struct nlattr *nl_results, *nl_match, *nl_freqs;
17375 int i, j;
17376
17377 nl_results = nla_nest_start_noflag(msg,
17378 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17379 if (!nl_results)
17380 return -EMSGSIZE;
17381
17382 for (i = 0; i < nd->n_matches; i++) {
17383 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17384
17385 nl_match = nla_nest_start_noflag(msg, i);
17386 if (!nl_match)
17387 break;
17388
17389 /* The SSID attribute is optional in nl80211, but for
17390 * simplicity reasons it's always present in the
17391 * cfg80211 structure. If a driver can't pass the
17392 * SSID, that needs to be changed. A zero length SSID
17393 * is still a valid SSID (wildcard), so it cannot be
17394 * used for this purpose.
17395 */
17396 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17397 match->ssid.ssid)) {
17398 nla_nest_cancel(msg, nl_match);
17399 goto out;
17400 }
17401
17402 if (match->n_channels) {
17403 nl_freqs = nla_nest_start_noflag(msg,
17404 NL80211_ATTR_SCAN_FREQUENCIES);
17405 if (!nl_freqs) {
17406 nla_nest_cancel(msg, nl_match);
17407 goto out;
17408 }
17409
17410 for (j = 0; j < match->n_channels; j++) {
17411 if (nla_put_u32(msg, j, match->channels[j])) {
17412 nla_nest_cancel(msg, nl_freqs);
17413 nla_nest_cancel(msg, nl_match);
17414 goto out;
17415 }
17416 }
17417
17418 nla_nest_end(msg, nl_freqs);
17419 }
17420
17421 nla_nest_end(msg, nl_match);
17422 }
17423
17424 out:
17425 nla_nest_end(msg, nl_results);
17426 return 0;
17427 }
17428
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)17429 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17430 struct cfg80211_wowlan_wakeup *wakeup,
17431 gfp_t gfp)
17432 {
17433 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17434 struct sk_buff *msg;
17435 void *hdr;
17436 int size = 200;
17437
17438 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17439
17440 if (wakeup)
17441 size += wakeup->packet_present_len;
17442
17443 msg = nlmsg_new(size, gfp);
17444 if (!msg)
17445 return;
17446
17447 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17448 if (!hdr)
17449 goto free_msg;
17450
17451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17452 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17453 NL80211_ATTR_PAD))
17454 goto free_msg;
17455
17456 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17457 wdev->netdev->ifindex))
17458 goto free_msg;
17459
17460 if (wakeup) {
17461 struct nlattr *reasons;
17462
17463 reasons = nla_nest_start_noflag(msg,
17464 NL80211_ATTR_WOWLAN_TRIGGERS);
17465 if (!reasons)
17466 goto free_msg;
17467
17468 if (wakeup->disconnect &&
17469 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17470 goto free_msg;
17471 if (wakeup->magic_pkt &&
17472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17473 goto free_msg;
17474 if (wakeup->gtk_rekey_failure &&
17475 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17476 goto free_msg;
17477 if (wakeup->eap_identity_req &&
17478 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17479 goto free_msg;
17480 if (wakeup->four_way_handshake &&
17481 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17482 goto free_msg;
17483 if (wakeup->rfkill_release &&
17484 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17485 goto free_msg;
17486
17487 if (wakeup->pattern_idx >= 0 &&
17488 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17489 wakeup->pattern_idx))
17490 goto free_msg;
17491
17492 if (wakeup->tcp_match &&
17493 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17494 goto free_msg;
17495
17496 if (wakeup->tcp_connlost &&
17497 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17498 goto free_msg;
17499
17500 if (wakeup->tcp_nomoretokens &&
17501 nla_put_flag(msg,
17502 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17503 goto free_msg;
17504
17505 if (wakeup->packet) {
17506 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17507 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17508
17509 if (!wakeup->packet_80211) {
17510 pkt_attr =
17511 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17512 len_attr =
17513 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17514 }
17515
17516 if (wakeup->packet_len &&
17517 nla_put_u32(msg, len_attr, wakeup->packet_len))
17518 goto free_msg;
17519
17520 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17521 wakeup->packet))
17522 goto free_msg;
17523 }
17524
17525 if (wakeup->net_detect &&
17526 cfg80211_net_detect_results(msg, wakeup))
17527 goto free_msg;
17528
17529 nla_nest_end(msg, reasons);
17530 }
17531
17532 genlmsg_end(msg, hdr);
17533
17534 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17535 NL80211_MCGRP_MLME, gfp);
17536 return;
17537
17538 free_msg:
17539 nlmsg_free(msg);
17540 }
17541 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17542 #endif
17543
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)17544 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17545 enum nl80211_tdls_operation oper,
17546 u16 reason_code, gfp_t gfp)
17547 {
17548 struct wireless_dev *wdev = dev->ieee80211_ptr;
17549 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17550 struct sk_buff *msg;
17551 void *hdr;
17552
17553 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17554 reason_code);
17555
17556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17557 if (!msg)
17558 return;
17559
17560 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17561 if (!hdr) {
17562 nlmsg_free(msg);
17563 return;
17564 }
17565
17566 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17567 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17568 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17569 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17570 (reason_code > 0 &&
17571 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17572 goto nla_put_failure;
17573
17574 genlmsg_end(msg, hdr);
17575
17576 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17577 NL80211_MCGRP_MLME, gfp);
17578 return;
17579
17580 nla_put_failure:
17581 nlmsg_free(msg);
17582 }
17583 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17584
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)17585 static int nl80211_netlink_notify(struct notifier_block * nb,
17586 unsigned long state,
17587 void *_notify)
17588 {
17589 struct netlink_notify *notify = _notify;
17590 struct cfg80211_registered_device *rdev;
17591 struct wireless_dev *wdev;
17592 struct cfg80211_beacon_registration *reg, *tmp;
17593
17594 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17595 return NOTIFY_DONE;
17596
17597 rcu_read_lock();
17598
17599 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17600 struct cfg80211_sched_scan_request *sched_scan_req;
17601
17602 list_for_each_entry_rcu(sched_scan_req,
17603 &rdev->sched_scan_req_list,
17604 list) {
17605 if (sched_scan_req->owner_nlportid == notify->portid) {
17606 sched_scan_req->nl_owner_dead = true;
17607 schedule_work(&rdev->sched_scan_stop_wk);
17608 }
17609 }
17610
17611 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17612 cfg80211_mlme_unregister_socket(wdev, notify->portid);
17613
17614 if (wdev->owner_nlportid == notify->portid) {
17615 wdev->nl_owner_dead = true;
17616 schedule_work(&rdev->destroy_work);
17617 } else if (wdev->conn_owner_nlportid == notify->portid) {
17618 schedule_work(&wdev->disconnect_wk);
17619 }
17620
17621 cfg80211_release_pmsr(wdev, notify->portid);
17622 }
17623
17624 spin_lock_bh(&rdev->beacon_registrations_lock);
17625 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17626 list) {
17627 if (reg->nlportid == notify->portid) {
17628 list_del(®->list);
17629 kfree(reg);
17630 break;
17631 }
17632 }
17633 spin_unlock_bh(&rdev->beacon_registrations_lock);
17634 }
17635
17636 rcu_read_unlock();
17637
17638 /*
17639 * It is possible that the user space process that is controlling the
17640 * indoor setting disappeared, so notify the regulatory core.
17641 */
17642 regulatory_netlink_notify(notify->portid);
17643 return NOTIFY_OK;
17644 }
17645
17646 static struct notifier_block nl80211_netlink_notifier = {
17647 .notifier_call = nl80211_netlink_notify,
17648 };
17649
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)17650 void cfg80211_ft_event(struct net_device *netdev,
17651 struct cfg80211_ft_event_params *ft_event)
17652 {
17653 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17654 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17655 struct sk_buff *msg;
17656 void *hdr;
17657
17658 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17659
17660 if (!ft_event->target_ap)
17661 return;
17662
17663 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17664 GFP_KERNEL);
17665 if (!msg)
17666 return;
17667
17668 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17669 if (!hdr)
17670 goto out;
17671
17672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17674 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17675 goto out;
17676
17677 if (ft_event->ies &&
17678 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17679 goto out;
17680 if (ft_event->ric_ies &&
17681 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17682 ft_event->ric_ies))
17683 goto out;
17684
17685 genlmsg_end(msg, hdr);
17686
17687 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17688 NL80211_MCGRP_MLME, GFP_KERNEL);
17689 return;
17690 out:
17691 nlmsg_free(msg);
17692 }
17693 EXPORT_SYMBOL(cfg80211_ft_event);
17694
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)17695 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17696 {
17697 struct cfg80211_registered_device *rdev;
17698 struct sk_buff *msg;
17699 void *hdr;
17700 u32 nlportid;
17701
17702 rdev = wiphy_to_rdev(wdev->wiphy);
17703 if (!rdev->crit_proto_nlportid)
17704 return;
17705
17706 nlportid = rdev->crit_proto_nlportid;
17707 rdev->crit_proto_nlportid = 0;
17708
17709 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17710 if (!msg)
17711 return;
17712
17713 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17714 if (!hdr)
17715 goto nla_put_failure;
17716
17717 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17718 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17719 NL80211_ATTR_PAD))
17720 goto nla_put_failure;
17721
17722 genlmsg_end(msg, hdr);
17723
17724 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17725 return;
17726
17727 nla_put_failure:
17728 nlmsg_free(msg);
17729 }
17730 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17731
nl80211_send_ap_stopped(struct wireless_dev * wdev)17732 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17733 {
17734 struct wiphy *wiphy = wdev->wiphy;
17735 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17736 struct sk_buff *msg;
17737 void *hdr;
17738
17739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17740 if (!msg)
17741 return;
17742
17743 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17744 if (!hdr)
17745 goto out;
17746
17747 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17748 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17749 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17750 NL80211_ATTR_PAD))
17751 goto out;
17752
17753 genlmsg_end(msg, hdr);
17754
17755 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17756 NL80211_MCGRP_MLME, GFP_KERNEL);
17757 return;
17758 out:
17759 nlmsg_free(msg);
17760 }
17761
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)17762 int cfg80211_external_auth_request(struct net_device *dev,
17763 struct cfg80211_external_auth_params *params,
17764 gfp_t gfp)
17765 {
17766 struct wireless_dev *wdev = dev->ieee80211_ptr;
17767 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17768 struct sk_buff *msg;
17769 void *hdr;
17770
17771 if (!wdev->conn_owner_nlportid)
17772 return -EINVAL;
17773
17774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17775 if (!msg)
17776 return -ENOMEM;
17777
17778 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17779 if (!hdr)
17780 goto nla_put_failure;
17781
17782 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17783 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17784 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17785 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17786 params->action) ||
17787 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17788 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17789 params->ssid.ssid))
17790 goto nla_put_failure;
17791
17792 genlmsg_end(msg, hdr);
17793 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17794 wdev->conn_owner_nlportid);
17795 return 0;
17796
17797 nla_put_failure:
17798 nlmsg_free(msg);
17799 return -ENOBUFS;
17800 }
17801 EXPORT_SYMBOL(cfg80211_external_auth_request);
17802
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)17803 void cfg80211_update_owe_info_event(struct net_device *netdev,
17804 struct cfg80211_update_owe_info *owe_info,
17805 gfp_t gfp)
17806 {
17807 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17808 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17809 struct sk_buff *msg;
17810 void *hdr;
17811
17812 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17813
17814 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17815 if (!msg)
17816 return;
17817
17818 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17819 if (!hdr)
17820 goto nla_put_failure;
17821
17822 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17823 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17824 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17825 goto nla_put_failure;
17826
17827 if (!owe_info->ie_len ||
17828 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17829 goto nla_put_failure;
17830
17831 genlmsg_end(msg, hdr);
17832
17833 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17834 NL80211_MCGRP_MLME, gfp);
17835 return;
17836
17837 nla_put_failure:
17838 genlmsg_cancel(msg, hdr);
17839 nlmsg_free(msg);
17840 }
17841 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17842
17843 /* initialisation/exit functions */
17844
nl80211_init(void)17845 int __init nl80211_init(void)
17846 {
17847 int err;
17848
17849 err = genl_register_family(&nl80211_fam);
17850 if (err)
17851 return err;
17852
17853 err = netlink_register_notifier(&nl80211_netlink_notifier);
17854 if (err)
17855 goto err_out;
17856
17857 return 0;
17858 err_out:
17859 genl_unregister_family(&nl80211_fam);
17860 return err;
17861 }
17862
nl80211_exit(void)17863 void nl80211_exit(void)
17864 {
17865 netlink_unregister_notifier(&nl80211_netlink_notifier);
17866 genl_unregister_family(&nl80211_fam);
17867 }
17868