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 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
479 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
480
481 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
482 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
483 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
484 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
485 .len = NL80211_MAX_SUPP_RATES },
486 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
487
488 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
489 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
490
491 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
492
493 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
494 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
495 validate_ie_attr,
496 IEEE80211_MAX_DATA_LEN),
497 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
498 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
499
500 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
501 .len = IEEE80211_MAX_SSID_LEN },
502 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
503 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
504 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
505 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
506 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
507 NL80211_MFP_NO,
508 NL80211_MFP_OPTIONAL),
509 [NL80211_ATTR_STA_FLAGS2] = {
510 .len = sizeof(struct nl80211_sta_flag_update),
511 },
512 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
513 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
514 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
515 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
516 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
517 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
518 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
519 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
520 [NL80211_ATTR_PID] = { .type = NLA_U32 },
521 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
522 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
523 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
524 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
525 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
526 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
527 .len = IEEE80211_MAX_DATA_LEN },
528 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
529 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
530 NL80211_PS_DISABLED,
531 NL80211_PS_ENABLED),
532 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
533 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
534 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
535 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
536 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
537 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
538 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
539 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
540 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
541 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
542 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
543 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
544 [NL80211_ATTR_STA_PLINK_STATE] =
545 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
546 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
547 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
548 [NL80211_ATTR_MESH_PEER_AID] =
549 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
550 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
551 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
552 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
553 [NL80211_ATTR_HIDDEN_SSID] =
554 NLA_POLICY_RANGE(NLA_U32,
555 NL80211_HIDDEN_SSID_NOT_IN_USE,
556 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
557 [NL80211_ATTR_IE_PROBE_RESP] =
558 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
559 IEEE80211_MAX_DATA_LEN),
560 [NL80211_ATTR_IE_ASSOC_RESP] =
561 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
562 IEEE80211_MAX_DATA_LEN),
563 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
564 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
565 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
566 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
567 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
568 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
569 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
570 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
571 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
572 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
573 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
574 .len = IEEE80211_MAX_DATA_LEN },
575 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
576 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
577 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
578 .len = NL80211_HT_CAPABILITY_LEN
579 },
580 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
581 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
582 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
583 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
584 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
585
586 /* need to include at least Auth Transaction and Status Code */
587 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
588
589 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
590 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
591 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
592 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
593 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
594 NLA_POLICY_RANGE(NLA_U32,
595 NL80211_MESH_POWER_UNKNOWN + 1,
596 NL80211_MESH_POWER_MAX),
597 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
598 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
599 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
600 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
601 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
602 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
603 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
604 .len = NL80211_VHT_CAPABILITY_LEN,
605 },
606 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
607 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
608 .len = IEEE80211_MAX_DATA_LEN },
609 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
610 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
611 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
612 [NL80211_ATTR_PEER_AID] =
613 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
614 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
615 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
616 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
617 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
618 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
619 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
620 /*
621 * The value of the Length field of the Supported Operating
622 * Classes element is between 2 and 253.
623 */
624 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
625 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
626 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
627 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
628 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
629 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
630 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
631 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
632 IEEE80211_QOS_MAP_LEN_MIN,
633 IEEE80211_QOS_MAP_LEN_MAX),
634 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
635 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
636 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
637 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
638 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
639 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
640 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
641 [NL80211_ATTR_USER_PRIO] =
642 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
643 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
644 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
645 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
646 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
647 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
648 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
649 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
650 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
651 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
652 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
653 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
654 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
655 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
656 .len = VHT_MUMIMO_GROUPS_DATA_LEN
657 },
658 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
659 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
660 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
661 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
662 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
663 .len = FILS_MAX_KEK_LEN },
664 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
665 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
666 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
667 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
668 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
669 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
670 },
671 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
672 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
673 .len = FILS_ERP_MAX_USERNAME_LEN },
674 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
675 .len = FILS_ERP_MAX_REALM_LEN },
676 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
677 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
678 .len = FILS_ERP_MAX_RRK_LEN },
679 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
680 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
681 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
682 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
683 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
684
685 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
686 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
687 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
688 [NL80211_ATTR_HE_CAPABILITY] =
689 NLA_POLICY_RANGE(NLA_BINARY,
690 NL80211_HE_MIN_CAPABILITY_LEN,
691 NL80211_HE_MAX_CAPABILITY_LEN),
692 [NL80211_ATTR_FTM_RESPONDER] =
693 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
694 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
695 [NL80211_ATTR_PEER_MEASUREMENTS] =
696 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
697 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
698 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
699 .len = SAE_PASSWORD_MAX_LEN },
700 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
701 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
702 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
703 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
704 [NL80211_ATTR_TID_CONFIG] =
705 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
706 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
707 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
708 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
709 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
710 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
711 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
712 [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
713 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
714 [NL80211_ATTR_FILS_DISCOVERY] =
715 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
716 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
717 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
718 [NL80211_ATTR_S1G_CAPABILITY] =
719 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
720 [NL80211_ATTR_S1G_CAPABILITY_MASK] =
721 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
722 };
723
724 /* policy for the key attributes */
725 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
726 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
727 [NL80211_KEY_IDX] = { .type = NLA_U8 },
728 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
729 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
730 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
731 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
732 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
733 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
734 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
735 };
736
737 /* policy for the key default flags */
738 static const struct nla_policy
739 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
740 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
741 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
742 };
743
744 #ifdef CONFIG_PM
745 /* policy for WoWLAN attributes */
746 static const struct nla_policy
747 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
748 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
749 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
750 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
751 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
752 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
753 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
754 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
755 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
756 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
757 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
758 };
759
760 static const struct nla_policy
761 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
762 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
763 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
764 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
765 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
766 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
767 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
768 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
769 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
770 },
771 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
772 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
773 },
774 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
775 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
776 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
777 };
778 #endif /* CONFIG_PM */
779
780 /* policy for coalesce rule attributes */
781 static const struct nla_policy
782 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
783 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
784 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
785 NLA_POLICY_RANGE(NLA_U32,
786 NL80211_COALESCE_CONDITION_MATCH,
787 NL80211_COALESCE_CONDITION_NO_MATCH),
788 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
789 };
790
791 /* policy for GTK rekey offload attributes */
792 static const struct nla_policy
793 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
794 [NL80211_REKEY_DATA_KEK] = {
795 .type = NLA_BINARY,
796 .len = NL80211_KEK_EXT_LEN
797 },
798 [NL80211_REKEY_DATA_KCK] = {
799 .type = NLA_BINARY,
800 .len = NL80211_KCK_EXT_LEN
801 },
802 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
803 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
804 };
805
806 static const struct nla_policy
807 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
808 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
809 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
810 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
811 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
812 };
813
814 static const struct nla_policy
815 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
816 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
817 .len = IEEE80211_MAX_SSID_LEN },
818 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
819 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
820 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
821 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
822 };
823
824 static const struct nla_policy
825 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
826 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
827 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
828 };
829
830 static const struct nla_policy
831 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
832 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
833 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
834 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
835 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
836 },
837 };
838
839 /* policy for NAN function attributes */
840 static const struct nla_policy
841 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
842 [NL80211_NAN_FUNC_TYPE] =
843 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
844 [NL80211_NAN_FUNC_SERVICE_ID] = {
845 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
846 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
847 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
848 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
849 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
850 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
851 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
852 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
853 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
854 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
855 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
856 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
857 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
858 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
859 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
860 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
861 };
862
863 /* policy for Service Response Filter attributes */
864 static const struct nla_policy
865 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
866 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
867 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
868 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
869 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
870 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
871 };
872
873 /* policy for packet pattern attributes */
874 static const struct nla_policy
875 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
876 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
877 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
878 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
879 };
880
nl80211_prepare_wdev_dump(struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)881 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
882 struct cfg80211_registered_device **rdev,
883 struct wireless_dev **wdev)
884 {
885 int err;
886
887 if (!cb->args[0]) {
888 struct nlattr **attrbuf;
889
890 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
891 GFP_KERNEL);
892 if (!attrbuf)
893 return -ENOMEM;
894
895 err = nlmsg_parse_deprecated(cb->nlh,
896 GENL_HDRLEN + nl80211_fam.hdrsize,
897 attrbuf, nl80211_fam.maxattr,
898 nl80211_policy, NULL);
899 if (err) {
900 kfree(attrbuf);
901 return err;
902 }
903
904 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
905 attrbuf);
906 kfree(attrbuf);
907 if (IS_ERR(*wdev))
908 return PTR_ERR(*wdev);
909 *rdev = wiphy_to_rdev((*wdev)->wiphy);
910 /* 0 is the first index - add 1 to parse only once */
911 cb->args[0] = (*rdev)->wiphy_idx + 1;
912 cb->args[1] = (*wdev)->identifier;
913 } else {
914 /* subtract the 1 again here */
915 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
916 struct wireless_dev *tmp;
917
918 if (!wiphy)
919 return -ENODEV;
920 *rdev = wiphy_to_rdev(wiphy);
921 *wdev = NULL;
922
923 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
924 if (tmp->identifier == cb->args[1]) {
925 *wdev = tmp;
926 break;
927 }
928 }
929
930 if (!*wdev)
931 return -ENODEV;
932 }
933
934 return 0;
935 }
936
937 /* message building helper */
nl80211hdr_put(struct sk_buff * skb,u32 portid,u32 seq,int flags,u8 cmd)938 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
939 int flags, u8 cmd)
940 {
941 /* since there is no private header just add the generic one */
942 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
943 }
944
nl80211_msg_put_wmm_rules(struct sk_buff * msg,const struct ieee80211_reg_rule * rule)945 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
946 const struct ieee80211_reg_rule *rule)
947 {
948 int j;
949 struct nlattr *nl_wmm_rules =
950 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
951
952 if (!nl_wmm_rules)
953 goto nla_put_failure;
954
955 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
956 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
957
958 if (!nl_wmm_rule)
959 goto nla_put_failure;
960
961 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
962 rule->wmm_rule.client[j].cw_min) ||
963 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
964 rule->wmm_rule.client[j].cw_max) ||
965 nla_put_u8(msg, NL80211_WMMR_AIFSN,
966 rule->wmm_rule.client[j].aifsn) ||
967 nla_put_u16(msg, NL80211_WMMR_TXOP,
968 rule->wmm_rule.client[j].cot))
969 goto nla_put_failure;
970
971 nla_nest_end(msg, nl_wmm_rule);
972 }
973 nla_nest_end(msg, nl_wmm_rules);
974
975 return 0;
976
977 nla_put_failure:
978 return -ENOBUFS;
979 }
980
nl80211_msg_put_channel(struct sk_buff * msg,struct wiphy * wiphy,struct ieee80211_channel * chan,bool large)981 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
982 struct ieee80211_channel *chan,
983 bool large)
984 {
985 /* Some channels must be completely excluded from the
986 * list to protect old user-space tools from breaking
987 */
988 if (!large && chan->flags &
989 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
990 return 0;
991 if (!large && chan->freq_offset)
992 return 0;
993
994 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
995 chan->center_freq))
996 goto nla_put_failure;
997
998 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
999 goto nla_put_failure;
1000
1001 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1002 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1003 goto nla_put_failure;
1004 if (chan->flags & IEEE80211_CHAN_NO_IR) {
1005 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1006 goto nla_put_failure;
1007 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1008 goto nla_put_failure;
1009 }
1010 if (chan->flags & IEEE80211_CHAN_RADAR) {
1011 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1012 goto nla_put_failure;
1013 if (large) {
1014 u32 time;
1015
1016 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1017
1018 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1019 chan->dfs_state))
1020 goto nla_put_failure;
1021 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1022 time))
1023 goto nla_put_failure;
1024 if (nla_put_u32(msg,
1025 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1026 chan->dfs_cac_ms))
1027 goto nla_put_failure;
1028 }
1029 }
1030
1031 if (large) {
1032 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1033 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1034 goto nla_put_failure;
1035 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1036 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1037 goto nla_put_failure;
1038 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1039 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1040 goto nla_put_failure;
1041 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1042 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1043 goto nla_put_failure;
1044 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1045 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1046 goto nla_put_failure;
1047 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1048 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1049 goto nla_put_failure;
1050 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1051 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1052 goto nla_put_failure;
1053 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1054 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1055 goto nla_put_failure;
1056 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1057 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1058 goto nla_put_failure;
1059 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1060 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1061 goto nla_put_failure;
1062 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1063 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1064 goto nla_put_failure;
1065 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1066 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1067 goto nla_put_failure;
1068 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1069 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1070 goto nla_put_failure;
1071 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1072 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1073 goto nla_put_failure;
1074 }
1075
1076 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1077 DBM_TO_MBM(chan->max_power)))
1078 goto nla_put_failure;
1079
1080 if (large) {
1081 const struct ieee80211_reg_rule *rule =
1082 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1083
1084 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1085 if (nl80211_msg_put_wmm_rules(msg, rule))
1086 goto nla_put_failure;
1087 }
1088 }
1089
1090 return 0;
1091
1092 nla_put_failure:
1093 return -ENOBUFS;
1094 }
1095
nl80211_put_txq_stats(struct sk_buff * msg,struct cfg80211_txq_stats * txqstats,int attrtype)1096 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1097 struct cfg80211_txq_stats *txqstats,
1098 int attrtype)
1099 {
1100 struct nlattr *txqattr;
1101
1102 #define PUT_TXQVAL_U32(attr, memb) do { \
1103 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1104 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1105 return false; \
1106 } while (0)
1107
1108 txqattr = nla_nest_start_noflag(msg, attrtype);
1109 if (!txqattr)
1110 return false;
1111
1112 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1113 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1114 PUT_TXQVAL_U32(FLOWS, flows);
1115 PUT_TXQVAL_U32(DROPS, drops);
1116 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1117 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1118 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1119 PUT_TXQVAL_U32(COLLISIONS, collisions);
1120 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1121 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1122 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1123 nla_nest_end(msg, txqattr);
1124
1125 #undef PUT_TXQVAL_U32
1126 return true;
1127 }
1128
1129 /* netlink command implementations */
1130
1131 struct key_parse {
1132 struct key_params p;
1133 int idx;
1134 int type;
1135 bool def, defmgmt, defbeacon;
1136 bool def_uni, def_multi;
1137 };
1138
nl80211_parse_key_new(struct genl_info * info,struct nlattr * key,struct key_parse * k)1139 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1140 struct key_parse *k)
1141 {
1142 struct nlattr *tb[NL80211_KEY_MAX + 1];
1143 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1144 nl80211_key_policy,
1145 info->extack);
1146 if (err)
1147 return err;
1148
1149 k->def = !!tb[NL80211_KEY_DEFAULT];
1150 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1151 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1152
1153 if (k->def) {
1154 k->def_uni = true;
1155 k->def_multi = true;
1156 }
1157 if (k->defmgmt || k->defbeacon)
1158 k->def_multi = true;
1159
1160 if (tb[NL80211_KEY_IDX])
1161 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1162
1163 if (tb[NL80211_KEY_DATA]) {
1164 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1165 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1166 }
1167
1168 if (tb[NL80211_KEY_SEQ]) {
1169 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1170 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1171 }
1172
1173 if (tb[NL80211_KEY_CIPHER])
1174 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1175
1176 if (tb[NL80211_KEY_TYPE])
1177 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1178
1179 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1180 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1181
1182 err = nla_parse_nested_deprecated(kdt,
1183 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1184 tb[NL80211_KEY_DEFAULT_TYPES],
1185 nl80211_key_default_policy,
1186 info->extack);
1187 if (err)
1188 return err;
1189
1190 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1191 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1192 }
1193
1194 if (tb[NL80211_KEY_MODE])
1195 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1196
1197 return 0;
1198 }
1199
nl80211_parse_key_old(struct genl_info * info,struct key_parse * k)1200 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1201 {
1202 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1203 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1204 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1205 }
1206
1207 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1208 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1209 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1210 }
1211
1212 if (info->attrs[NL80211_ATTR_KEY_IDX])
1213 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1214
1215 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1216 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1217
1218 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1219 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1220
1221 if (k->def) {
1222 k->def_uni = true;
1223 k->def_multi = true;
1224 }
1225 if (k->defmgmt)
1226 k->def_multi = true;
1227
1228 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1229 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1230
1231 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1232 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1233 int err = nla_parse_nested_deprecated(kdt,
1234 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1235 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1236 nl80211_key_default_policy,
1237 info->extack);
1238 if (err)
1239 return err;
1240
1241 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1242 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1243 }
1244
1245 return 0;
1246 }
1247
nl80211_parse_key(struct genl_info * info,struct key_parse * k)1248 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1249 {
1250 int err;
1251
1252 memset(k, 0, sizeof(*k));
1253 k->idx = -1;
1254 k->type = -1;
1255
1256 if (info->attrs[NL80211_ATTR_KEY])
1257 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1258 else
1259 err = nl80211_parse_key_old(info, k);
1260
1261 if (err)
1262 return err;
1263
1264 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1265 (k->defbeacon ? 1 : 0) > 1) {
1266 GENL_SET_ERR_MSG(info,
1267 "key with multiple default flags is invalid");
1268 return -EINVAL;
1269 }
1270
1271 if (k->defmgmt || k->defbeacon) {
1272 if (k->def_uni || !k->def_multi) {
1273 GENL_SET_ERR_MSG(info,
1274 "defmgmt/defbeacon key must be mcast");
1275 return -EINVAL;
1276 }
1277 }
1278
1279 if (k->idx != -1) {
1280 if (k->defmgmt) {
1281 if (k->idx < 4 || k->idx > 5) {
1282 GENL_SET_ERR_MSG(info,
1283 "defmgmt key idx not 4 or 5");
1284 return -EINVAL;
1285 }
1286 } else if (k->defbeacon) {
1287 if (k->idx < 6 || k->idx > 7) {
1288 GENL_SET_ERR_MSG(info,
1289 "defbeacon key idx not 6 or 7");
1290 return -EINVAL;
1291 }
1292 } else if (k->def) {
1293 if (k->idx < 0 || k->idx > 3) {
1294 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1295 return -EINVAL;
1296 }
1297 } else {
1298 if (k->idx < 0 || k->idx > 7) {
1299 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1300 return -EINVAL;
1301 }
1302 }
1303 }
1304
1305 return 0;
1306 }
1307
1308 static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device * rdev,struct genl_info * info,bool * no_ht)1309 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1310 struct genl_info *info, bool *no_ht)
1311 {
1312 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1313 struct key_parse parse;
1314 struct nlattr *key;
1315 struct cfg80211_cached_keys *result;
1316 int rem, err, def = 0;
1317 bool have_key = false;
1318
1319 nla_for_each_nested(key, keys, rem) {
1320 have_key = true;
1321 break;
1322 }
1323
1324 if (!have_key)
1325 return NULL;
1326
1327 result = kzalloc(sizeof(*result), GFP_KERNEL);
1328 if (!result)
1329 return ERR_PTR(-ENOMEM);
1330
1331 result->def = -1;
1332
1333 nla_for_each_nested(key, keys, rem) {
1334 memset(&parse, 0, sizeof(parse));
1335 parse.idx = -1;
1336
1337 err = nl80211_parse_key_new(info, key, &parse);
1338 if (err)
1339 goto error;
1340 err = -EINVAL;
1341 if (!parse.p.key)
1342 goto error;
1343 if (parse.idx < 0 || parse.idx > 3) {
1344 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1345 goto error;
1346 }
1347 if (parse.def) {
1348 if (def) {
1349 GENL_SET_ERR_MSG(info,
1350 "only one key can be default");
1351 goto error;
1352 }
1353 def = 1;
1354 result->def = parse.idx;
1355 if (!parse.def_uni || !parse.def_multi)
1356 goto error;
1357 } else if (parse.defmgmt)
1358 goto error;
1359 err = cfg80211_validate_key_settings(rdev, &parse.p,
1360 parse.idx, false, NULL);
1361 if (err)
1362 goto error;
1363 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1364 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1365 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1366 err = -EINVAL;
1367 goto error;
1368 }
1369 result->params[parse.idx].cipher = parse.p.cipher;
1370 result->params[parse.idx].key_len = parse.p.key_len;
1371 result->params[parse.idx].key = result->data[parse.idx];
1372 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1373
1374 /* must be WEP key if we got here */
1375 if (no_ht)
1376 *no_ht = true;
1377 }
1378
1379 if (result->def < 0) {
1380 err = -EINVAL;
1381 GENL_SET_ERR_MSG(info, "need a default/TX key");
1382 goto error;
1383 }
1384
1385 return result;
1386 error:
1387 kfree(result);
1388 return ERR_PTR(err);
1389 }
1390
nl80211_key_allowed(struct wireless_dev * wdev)1391 static int nl80211_key_allowed(struct wireless_dev *wdev)
1392 {
1393 ASSERT_WDEV_LOCK(wdev);
1394
1395 switch (wdev->iftype) {
1396 case NL80211_IFTYPE_AP:
1397 case NL80211_IFTYPE_AP_VLAN:
1398 case NL80211_IFTYPE_P2P_GO:
1399 case NL80211_IFTYPE_MESH_POINT:
1400 break;
1401 case NL80211_IFTYPE_ADHOC:
1402 case NL80211_IFTYPE_STATION:
1403 case NL80211_IFTYPE_P2P_CLIENT:
1404 if (!wdev->current_bss)
1405 return -ENOLINK;
1406 break;
1407 case NL80211_IFTYPE_UNSPECIFIED:
1408 case NL80211_IFTYPE_OCB:
1409 case NL80211_IFTYPE_MONITOR:
1410 case NL80211_IFTYPE_NAN:
1411 case NL80211_IFTYPE_P2P_DEVICE:
1412 case NL80211_IFTYPE_WDS:
1413 case NUM_NL80211_IFTYPES:
1414 return -EINVAL;
1415 }
1416
1417 return 0;
1418 }
1419
nl80211_get_valid_chan(struct wiphy * wiphy,u32 freq)1420 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1421 u32 freq)
1422 {
1423 struct ieee80211_channel *chan;
1424
1425 chan = ieee80211_get_channel_khz(wiphy, freq);
1426 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1427 return NULL;
1428 return chan;
1429 }
1430
nl80211_put_iftypes(struct sk_buff * msg,u32 attr,u16 ifmodes)1431 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1432 {
1433 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1434 int i;
1435
1436 if (!nl_modes)
1437 goto nla_put_failure;
1438
1439 i = 0;
1440 while (ifmodes) {
1441 if ((ifmodes & 1) && nla_put_flag(msg, i))
1442 goto nla_put_failure;
1443 ifmodes >>= 1;
1444 i++;
1445 }
1446
1447 nla_nest_end(msg, nl_modes);
1448 return 0;
1449
1450 nla_put_failure:
1451 return -ENOBUFS;
1452 }
1453
nl80211_put_iface_combinations(struct wiphy * wiphy,struct sk_buff * msg,bool large)1454 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1455 struct sk_buff *msg,
1456 bool large)
1457 {
1458 struct nlattr *nl_combis;
1459 int i, j;
1460
1461 nl_combis = nla_nest_start_noflag(msg,
1462 NL80211_ATTR_INTERFACE_COMBINATIONS);
1463 if (!nl_combis)
1464 goto nla_put_failure;
1465
1466 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1467 const struct ieee80211_iface_combination *c;
1468 struct nlattr *nl_combi, *nl_limits;
1469
1470 c = &wiphy->iface_combinations[i];
1471
1472 nl_combi = nla_nest_start_noflag(msg, i + 1);
1473 if (!nl_combi)
1474 goto nla_put_failure;
1475
1476 nl_limits = nla_nest_start_noflag(msg,
1477 NL80211_IFACE_COMB_LIMITS);
1478 if (!nl_limits)
1479 goto nla_put_failure;
1480
1481 for (j = 0; j < c->n_limits; j++) {
1482 struct nlattr *nl_limit;
1483
1484 nl_limit = nla_nest_start_noflag(msg, j + 1);
1485 if (!nl_limit)
1486 goto nla_put_failure;
1487 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1488 c->limits[j].max))
1489 goto nla_put_failure;
1490 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1491 c->limits[j].types))
1492 goto nla_put_failure;
1493 nla_nest_end(msg, nl_limit);
1494 }
1495
1496 nla_nest_end(msg, nl_limits);
1497
1498 if (c->beacon_int_infra_match &&
1499 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1500 goto nla_put_failure;
1501 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1502 c->num_different_channels) ||
1503 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1504 c->max_interfaces))
1505 goto nla_put_failure;
1506 if (large &&
1507 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1508 c->radar_detect_widths) ||
1509 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1510 c->radar_detect_regions)))
1511 goto nla_put_failure;
1512 if (c->beacon_int_min_gcd &&
1513 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1514 c->beacon_int_min_gcd))
1515 goto nla_put_failure;
1516
1517 nla_nest_end(msg, nl_combi);
1518 }
1519
1520 nla_nest_end(msg, nl_combis);
1521
1522 return 0;
1523 nla_put_failure:
1524 return -ENOBUFS;
1525 }
1526
1527 #ifdef CONFIG_PM
nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1528 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1529 struct sk_buff *msg)
1530 {
1531 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1532 struct nlattr *nl_tcp;
1533
1534 if (!tcp)
1535 return 0;
1536
1537 nl_tcp = nla_nest_start_noflag(msg,
1538 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1539 if (!nl_tcp)
1540 return -ENOBUFS;
1541
1542 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1543 tcp->data_payload_max))
1544 return -ENOBUFS;
1545
1546 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1547 tcp->data_payload_max))
1548 return -ENOBUFS;
1549
1550 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1551 return -ENOBUFS;
1552
1553 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1554 sizeof(*tcp->tok), tcp->tok))
1555 return -ENOBUFS;
1556
1557 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1558 tcp->data_interval_max))
1559 return -ENOBUFS;
1560
1561 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1562 tcp->wake_payload_max))
1563 return -ENOBUFS;
1564
1565 nla_nest_end(msg, nl_tcp);
1566 return 0;
1567 }
1568
nl80211_send_wowlan(struct sk_buff * msg,struct cfg80211_registered_device * rdev,bool large)1569 static int nl80211_send_wowlan(struct sk_buff *msg,
1570 struct cfg80211_registered_device *rdev,
1571 bool large)
1572 {
1573 struct nlattr *nl_wowlan;
1574
1575 if (!rdev->wiphy.wowlan)
1576 return 0;
1577
1578 nl_wowlan = nla_nest_start_noflag(msg,
1579 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1580 if (!nl_wowlan)
1581 return -ENOBUFS;
1582
1583 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1584 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1585 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1586 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1587 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1588 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1589 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1590 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1591 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1592 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1593 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1594 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1595 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1596 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1597 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1598 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1599 return -ENOBUFS;
1600
1601 if (rdev->wiphy.wowlan->n_patterns) {
1602 struct nl80211_pattern_support pat = {
1603 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1604 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1605 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1606 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1607 };
1608
1609 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1610 sizeof(pat), &pat))
1611 return -ENOBUFS;
1612 }
1613
1614 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1615 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1616 rdev->wiphy.wowlan->max_nd_match_sets))
1617 return -ENOBUFS;
1618
1619 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1620 return -ENOBUFS;
1621
1622 nla_nest_end(msg, nl_wowlan);
1623
1624 return 0;
1625 }
1626 #endif
1627
nl80211_send_coalesce(struct sk_buff * msg,struct cfg80211_registered_device * rdev)1628 static int nl80211_send_coalesce(struct sk_buff *msg,
1629 struct cfg80211_registered_device *rdev)
1630 {
1631 struct nl80211_coalesce_rule_support rule;
1632
1633 if (!rdev->wiphy.coalesce)
1634 return 0;
1635
1636 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1637 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1638 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1639 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1640 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1641 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1642
1643 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1644 return -ENOBUFS;
1645
1646 return 0;
1647 }
1648
1649 static int
nl80211_send_iftype_data(struct sk_buff * msg,const struct ieee80211_supported_band * sband,const struct ieee80211_sband_iftype_data * iftdata)1650 nl80211_send_iftype_data(struct sk_buff *msg,
1651 const struct ieee80211_supported_band *sband,
1652 const struct ieee80211_sband_iftype_data *iftdata)
1653 {
1654 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1655
1656 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1657 iftdata->types_mask))
1658 return -ENOBUFS;
1659
1660 if (he_cap->has_he) {
1661 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1662 sizeof(he_cap->he_cap_elem.mac_cap_info),
1663 he_cap->he_cap_elem.mac_cap_info) ||
1664 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1665 sizeof(he_cap->he_cap_elem.phy_cap_info),
1666 he_cap->he_cap_elem.phy_cap_info) ||
1667 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1668 sizeof(he_cap->he_mcs_nss_supp),
1669 &he_cap->he_mcs_nss_supp) ||
1670 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1671 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1672 return -ENOBUFS;
1673 }
1674
1675 if (sband->band == NL80211_BAND_6GHZ &&
1676 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1677 sizeof(iftdata->he_6ghz_capa),
1678 &iftdata->he_6ghz_capa))
1679 return -ENOBUFS;
1680
1681 return 0;
1682 }
1683
nl80211_send_band_rateinfo(struct sk_buff * msg,struct ieee80211_supported_band * sband,bool large)1684 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1685 struct ieee80211_supported_band *sband,
1686 bool large)
1687 {
1688 struct nlattr *nl_rates, *nl_rate;
1689 struct ieee80211_rate *rate;
1690 int i;
1691
1692 /* add HT info */
1693 if (sband->ht_cap.ht_supported &&
1694 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1695 sizeof(sband->ht_cap.mcs),
1696 &sband->ht_cap.mcs) ||
1697 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1698 sband->ht_cap.cap) ||
1699 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1700 sband->ht_cap.ampdu_factor) ||
1701 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1702 sband->ht_cap.ampdu_density)))
1703 return -ENOBUFS;
1704
1705 /* add VHT info */
1706 if (sband->vht_cap.vht_supported &&
1707 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1708 sizeof(sband->vht_cap.vht_mcs),
1709 &sband->vht_cap.vht_mcs) ||
1710 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1711 sband->vht_cap.cap)))
1712 return -ENOBUFS;
1713
1714 if (large && sband->n_iftype_data) {
1715 struct nlattr *nl_iftype_data =
1716 nla_nest_start_noflag(msg,
1717 NL80211_BAND_ATTR_IFTYPE_DATA);
1718 int err;
1719
1720 if (!nl_iftype_data)
1721 return -ENOBUFS;
1722
1723 for (i = 0; i < sband->n_iftype_data; i++) {
1724 struct nlattr *iftdata;
1725
1726 iftdata = nla_nest_start_noflag(msg, i + 1);
1727 if (!iftdata)
1728 return -ENOBUFS;
1729
1730 err = nl80211_send_iftype_data(msg, sband,
1731 &sband->iftype_data[i]);
1732 if (err)
1733 return err;
1734
1735 nla_nest_end(msg, iftdata);
1736 }
1737
1738 nla_nest_end(msg, nl_iftype_data);
1739 }
1740
1741 /* add EDMG info */
1742 if (large && sband->edmg_cap.channels &&
1743 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1744 sband->edmg_cap.channels) ||
1745 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1746 sband->edmg_cap.bw_config)))
1747
1748 return -ENOBUFS;
1749
1750 /* add bitrates */
1751 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1752 if (!nl_rates)
1753 return -ENOBUFS;
1754
1755 for (i = 0; i < sband->n_bitrates; i++) {
1756 nl_rate = nla_nest_start_noflag(msg, i);
1757 if (!nl_rate)
1758 return -ENOBUFS;
1759
1760 rate = &sband->bitrates[i];
1761 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1762 rate->bitrate))
1763 return -ENOBUFS;
1764 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1765 nla_put_flag(msg,
1766 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1767 return -ENOBUFS;
1768
1769 nla_nest_end(msg, nl_rate);
1770 }
1771
1772 nla_nest_end(msg, nl_rates);
1773
1774 return 0;
1775 }
1776
1777 static int
nl80211_send_mgmt_stypes(struct sk_buff * msg,const struct ieee80211_txrx_stypes * mgmt_stypes)1778 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1779 const struct ieee80211_txrx_stypes *mgmt_stypes)
1780 {
1781 u16 stypes;
1782 struct nlattr *nl_ftypes, *nl_ifs;
1783 enum nl80211_iftype ift;
1784 int i;
1785
1786 if (!mgmt_stypes)
1787 return 0;
1788
1789 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1790 if (!nl_ifs)
1791 return -ENOBUFS;
1792
1793 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1794 nl_ftypes = nla_nest_start_noflag(msg, ift);
1795 if (!nl_ftypes)
1796 return -ENOBUFS;
1797 i = 0;
1798 stypes = mgmt_stypes[ift].tx;
1799 while (stypes) {
1800 if ((stypes & 1) &&
1801 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1802 (i << 4) | IEEE80211_FTYPE_MGMT))
1803 return -ENOBUFS;
1804 stypes >>= 1;
1805 i++;
1806 }
1807 nla_nest_end(msg, nl_ftypes);
1808 }
1809
1810 nla_nest_end(msg, nl_ifs);
1811
1812 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1813 if (!nl_ifs)
1814 return -ENOBUFS;
1815
1816 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1817 nl_ftypes = nla_nest_start_noflag(msg, ift);
1818 if (!nl_ftypes)
1819 return -ENOBUFS;
1820 i = 0;
1821 stypes = mgmt_stypes[ift].rx;
1822 while (stypes) {
1823 if ((stypes & 1) &&
1824 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1825 (i << 4) | IEEE80211_FTYPE_MGMT))
1826 return -ENOBUFS;
1827 stypes >>= 1;
1828 i++;
1829 }
1830 nla_nest_end(msg, nl_ftypes);
1831 }
1832 nla_nest_end(msg, nl_ifs);
1833
1834 return 0;
1835 }
1836
1837 #define CMD(op, n) \
1838 do { \
1839 if (rdev->ops->op) { \
1840 i++; \
1841 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1842 goto nla_put_failure; \
1843 } \
1844 } while (0)
1845
nl80211_add_commands_unsplit(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1846 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1847 struct sk_buff *msg)
1848 {
1849 int i = 0;
1850
1851 /*
1852 * do *NOT* add anything into this function, new things need to be
1853 * advertised only to new versions of userspace that can deal with
1854 * the split (and they can't possibly care about new features...
1855 */
1856 CMD(add_virtual_intf, NEW_INTERFACE);
1857 CMD(change_virtual_intf, SET_INTERFACE);
1858 CMD(add_key, NEW_KEY);
1859 CMD(start_ap, START_AP);
1860 CMD(add_station, NEW_STATION);
1861 CMD(add_mpath, NEW_MPATH);
1862 CMD(update_mesh_config, SET_MESH_CONFIG);
1863 CMD(change_bss, SET_BSS);
1864 CMD(auth, AUTHENTICATE);
1865 CMD(assoc, ASSOCIATE);
1866 CMD(deauth, DEAUTHENTICATE);
1867 CMD(disassoc, DISASSOCIATE);
1868 CMD(join_ibss, JOIN_IBSS);
1869 CMD(join_mesh, JOIN_MESH);
1870 CMD(set_pmksa, SET_PMKSA);
1871 CMD(del_pmksa, DEL_PMKSA);
1872 CMD(flush_pmksa, FLUSH_PMKSA);
1873 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1874 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1875 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1876 CMD(mgmt_tx, FRAME);
1877 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1878 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1879 i++;
1880 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1881 goto nla_put_failure;
1882 }
1883 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1884 rdev->ops->join_mesh) {
1885 i++;
1886 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1887 goto nla_put_failure;
1888 }
1889 CMD(set_wds_peer, SET_WDS_PEER);
1890 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1891 CMD(tdls_mgmt, TDLS_MGMT);
1892 CMD(tdls_oper, TDLS_OPER);
1893 }
1894 if (rdev->wiphy.max_sched_scan_reqs)
1895 CMD(sched_scan_start, START_SCHED_SCAN);
1896 CMD(probe_client, PROBE_CLIENT);
1897 CMD(set_noack_map, SET_NOACK_MAP);
1898 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1899 i++;
1900 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1901 goto nla_put_failure;
1902 }
1903 CMD(start_p2p_device, START_P2P_DEVICE);
1904 CMD(set_mcast_rate, SET_MCAST_RATE);
1905 #ifdef CONFIG_NL80211_TESTMODE
1906 CMD(testmode_cmd, TESTMODE);
1907 #endif
1908
1909 if (rdev->ops->connect || rdev->ops->auth) {
1910 i++;
1911 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1912 goto nla_put_failure;
1913 }
1914
1915 if (rdev->ops->disconnect || rdev->ops->deauth) {
1916 i++;
1917 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1918 goto nla_put_failure;
1919 }
1920
1921 return i;
1922 nla_put_failure:
1923 return -ENOBUFS;
1924 }
1925
1926 static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities * cap,struct sk_buff * msg)1927 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1928 struct sk_buff *msg)
1929 {
1930 struct nlattr *ftm;
1931
1932 if (!cap->ftm.supported)
1933 return 0;
1934
1935 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1936 if (!ftm)
1937 return -ENOBUFS;
1938
1939 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1940 return -ENOBUFS;
1941 if (cap->ftm.non_asap &&
1942 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1943 return -ENOBUFS;
1944 if (cap->ftm.request_lci &&
1945 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1946 return -ENOBUFS;
1947 if (cap->ftm.request_civicloc &&
1948 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1949 return -ENOBUFS;
1950 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1951 cap->ftm.preambles))
1952 return -ENOBUFS;
1953 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1954 cap->ftm.bandwidths))
1955 return -ENOBUFS;
1956 if (cap->ftm.max_bursts_exponent >= 0 &&
1957 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1958 cap->ftm.max_bursts_exponent))
1959 return -ENOBUFS;
1960 if (cap->ftm.max_ftms_per_burst &&
1961 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1962 cap->ftm.max_ftms_per_burst))
1963 return -ENOBUFS;
1964 if (cap->ftm.trigger_based &&
1965 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1966 return -ENOBUFS;
1967 if (cap->ftm.non_trigger_based &&
1968 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1969 return -ENOBUFS;
1970
1971 nla_nest_end(msg, ftm);
1972 return 0;
1973 }
1974
nl80211_send_pmsr_capa(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1975 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1976 struct sk_buff *msg)
1977 {
1978 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1979 struct nlattr *pmsr, *caps;
1980
1981 if (!cap)
1982 return 0;
1983
1984 /*
1985 * we don't need to clean up anything here since the caller
1986 * will genlmsg_cancel() if we fail
1987 */
1988
1989 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1990 if (!pmsr)
1991 return -ENOBUFS;
1992
1993 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1994 return -ENOBUFS;
1995
1996 if (cap->report_ap_tsf &&
1997 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1998 return -ENOBUFS;
1999
2000 if (cap->randomize_mac_addr &&
2001 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2002 return -ENOBUFS;
2003
2004 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2005 if (!caps)
2006 return -ENOBUFS;
2007
2008 if (nl80211_send_pmsr_ftm_capa(cap, msg))
2009 return -ENOBUFS;
2010
2011 nla_nest_end(msg, caps);
2012 nla_nest_end(msg, pmsr);
2013
2014 return 0;
2015 }
2016
2017 static int
nl80211_put_iftype_akm_suites(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2018 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2019 struct sk_buff *msg)
2020 {
2021 int i;
2022 struct nlattr *nested, *nested_akms;
2023 const struct wiphy_iftype_akm_suites *iftype_akms;
2024
2025 if (!rdev->wiphy.num_iftype_akm_suites ||
2026 !rdev->wiphy.iftype_akm_suites)
2027 return 0;
2028
2029 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2030 if (!nested)
2031 return -ENOBUFS;
2032
2033 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2034 nested_akms = nla_nest_start(msg, i + 1);
2035 if (!nested_akms)
2036 return -ENOBUFS;
2037
2038 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2039
2040 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2041 iftype_akms->iftypes_mask))
2042 return -ENOBUFS;
2043
2044 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2045 sizeof(u32) * iftype_akms->n_akm_suites,
2046 iftype_akms->akm_suites)) {
2047 return -ENOBUFS;
2048 }
2049 nla_nest_end(msg, nested_akms);
2050 }
2051
2052 nla_nest_end(msg, nested);
2053
2054 return 0;
2055 }
2056
2057 static int
nl80211_put_tid_config_support(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2058 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2059 struct sk_buff *msg)
2060 {
2061 struct nlattr *supp;
2062
2063 if (!rdev->wiphy.tid_config_support.vif &&
2064 !rdev->wiphy.tid_config_support.peer)
2065 return 0;
2066
2067 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2068 if (!supp)
2069 return -ENOSPC;
2070
2071 if (rdev->wiphy.tid_config_support.vif &&
2072 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2073 rdev->wiphy.tid_config_support.vif,
2074 NL80211_TID_CONFIG_ATTR_PAD))
2075 goto fail;
2076
2077 if (rdev->wiphy.tid_config_support.peer &&
2078 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2079 rdev->wiphy.tid_config_support.peer,
2080 NL80211_TID_CONFIG_ATTR_PAD))
2081 goto fail;
2082
2083 /* for now we just use the same value ... makes more sense */
2084 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2085 rdev->wiphy.tid_config_support.max_retry))
2086 goto fail;
2087 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2088 rdev->wiphy.tid_config_support.max_retry))
2089 goto fail;
2090
2091 nla_nest_end(msg, supp);
2092
2093 return 0;
2094 fail:
2095 nla_nest_cancel(msg, supp);
2096 return -ENOBUFS;
2097 }
2098
2099 struct nl80211_dump_wiphy_state {
2100 s64 filter_wiphy;
2101 long start;
2102 long split_start, band_start, chan_start, capa_start;
2103 bool split;
2104 };
2105
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)2106 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2107 enum nl80211_commands cmd,
2108 struct sk_buff *msg, u32 portid, u32 seq,
2109 int flags, struct nl80211_dump_wiphy_state *state)
2110 {
2111 void *hdr;
2112 struct nlattr *nl_bands, *nl_band;
2113 struct nlattr *nl_freqs, *nl_freq;
2114 struct nlattr *nl_cmds;
2115 enum nl80211_band band;
2116 struct ieee80211_channel *chan;
2117 int i;
2118 const struct ieee80211_txrx_stypes *mgmt_stypes =
2119 rdev->wiphy.mgmt_stypes;
2120 u32 features;
2121
2122 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2123 if (!hdr)
2124 return -ENOBUFS;
2125
2126 if (WARN_ON(!state))
2127 return -EINVAL;
2128
2129 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2130 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2131 wiphy_name(&rdev->wiphy)) ||
2132 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2133 cfg80211_rdev_list_generation))
2134 goto nla_put_failure;
2135
2136 if (cmd != NL80211_CMD_NEW_WIPHY)
2137 goto finish;
2138
2139 switch (state->split_start) {
2140 case 0:
2141 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2142 rdev->wiphy.retry_short) ||
2143 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2144 rdev->wiphy.retry_long) ||
2145 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2146 rdev->wiphy.frag_threshold) ||
2147 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2148 rdev->wiphy.rts_threshold) ||
2149 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2150 rdev->wiphy.coverage_class) ||
2151 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2152 rdev->wiphy.max_scan_ssids) ||
2153 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2154 rdev->wiphy.max_sched_scan_ssids) ||
2155 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2156 rdev->wiphy.max_scan_ie_len) ||
2157 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2158 rdev->wiphy.max_sched_scan_ie_len) ||
2159 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2160 rdev->wiphy.max_match_sets))
2161 goto nla_put_failure;
2162
2163 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2164 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2165 goto nla_put_failure;
2166 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2167 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2168 goto nla_put_failure;
2169 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2170 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2171 goto nla_put_failure;
2172 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2173 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2174 goto nla_put_failure;
2175 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2176 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2177 goto nla_put_failure;
2178 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2179 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2180 goto nla_put_failure;
2181 state->split_start++;
2182 if (state->split)
2183 break;
2184 fallthrough;
2185 case 1:
2186 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2187 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2188 rdev->wiphy.cipher_suites))
2189 goto nla_put_failure;
2190
2191 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2192 rdev->wiphy.max_num_pmkids))
2193 goto nla_put_failure;
2194
2195 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2196 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2197 goto nla_put_failure;
2198
2199 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2200 rdev->wiphy.available_antennas_tx) ||
2201 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2202 rdev->wiphy.available_antennas_rx))
2203 goto nla_put_failure;
2204
2205 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2206 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2207 rdev->wiphy.probe_resp_offload))
2208 goto nla_put_failure;
2209
2210 if ((rdev->wiphy.available_antennas_tx ||
2211 rdev->wiphy.available_antennas_rx) &&
2212 rdev->ops->get_antenna) {
2213 u32 tx_ant = 0, rx_ant = 0;
2214 int res;
2215
2216 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2217 if (!res) {
2218 if (nla_put_u32(msg,
2219 NL80211_ATTR_WIPHY_ANTENNA_TX,
2220 tx_ant) ||
2221 nla_put_u32(msg,
2222 NL80211_ATTR_WIPHY_ANTENNA_RX,
2223 rx_ant))
2224 goto nla_put_failure;
2225 }
2226 }
2227
2228 state->split_start++;
2229 if (state->split)
2230 break;
2231 fallthrough;
2232 case 2:
2233 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2234 rdev->wiphy.interface_modes))
2235 goto nla_put_failure;
2236 state->split_start++;
2237 if (state->split)
2238 break;
2239 fallthrough;
2240 case 3:
2241 nl_bands = nla_nest_start_noflag(msg,
2242 NL80211_ATTR_WIPHY_BANDS);
2243 if (!nl_bands)
2244 goto nla_put_failure;
2245
2246 for (band = state->band_start;
2247 band < NUM_NL80211_BANDS; band++) {
2248 struct ieee80211_supported_band *sband;
2249
2250 /* omit higher bands for ancient software */
2251 if (band > NL80211_BAND_5GHZ && !state->split)
2252 break;
2253
2254 sband = rdev->wiphy.bands[band];
2255
2256 if (!sband)
2257 continue;
2258
2259 nl_band = nla_nest_start_noflag(msg, band);
2260 if (!nl_band)
2261 goto nla_put_failure;
2262
2263 switch (state->chan_start) {
2264 case 0:
2265 if (nl80211_send_band_rateinfo(msg, sband,
2266 state->split))
2267 goto nla_put_failure;
2268 state->chan_start++;
2269 if (state->split)
2270 break;
2271 fallthrough;
2272 default:
2273 /* add frequencies */
2274 nl_freqs = nla_nest_start_noflag(msg,
2275 NL80211_BAND_ATTR_FREQS);
2276 if (!nl_freqs)
2277 goto nla_put_failure;
2278
2279 for (i = state->chan_start - 1;
2280 i < sband->n_channels;
2281 i++) {
2282 nl_freq = nla_nest_start_noflag(msg,
2283 i);
2284 if (!nl_freq)
2285 goto nla_put_failure;
2286
2287 chan = &sband->channels[i];
2288
2289 if (nl80211_msg_put_channel(
2290 msg, &rdev->wiphy, chan,
2291 state->split))
2292 goto nla_put_failure;
2293
2294 nla_nest_end(msg, nl_freq);
2295 if (state->split)
2296 break;
2297 }
2298 if (i < sband->n_channels)
2299 state->chan_start = i + 2;
2300 else
2301 state->chan_start = 0;
2302 nla_nest_end(msg, nl_freqs);
2303 }
2304
2305 nla_nest_end(msg, nl_band);
2306
2307 if (state->split) {
2308 /* start again here */
2309 if (state->chan_start)
2310 band--;
2311 break;
2312 }
2313 }
2314 nla_nest_end(msg, nl_bands);
2315
2316 if (band < NUM_NL80211_BANDS)
2317 state->band_start = band + 1;
2318 else
2319 state->band_start = 0;
2320
2321 /* if bands & channels are done, continue outside */
2322 if (state->band_start == 0 && state->chan_start == 0)
2323 state->split_start++;
2324 if (state->split)
2325 break;
2326 fallthrough;
2327 case 4:
2328 nl_cmds = nla_nest_start_noflag(msg,
2329 NL80211_ATTR_SUPPORTED_COMMANDS);
2330 if (!nl_cmds)
2331 goto nla_put_failure;
2332
2333 i = nl80211_add_commands_unsplit(rdev, msg);
2334 if (i < 0)
2335 goto nla_put_failure;
2336 if (state->split) {
2337 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2338 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2339 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2340 CMD(channel_switch, CHANNEL_SWITCH);
2341 CMD(set_qos_map, SET_QOS_MAP);
2342 if (rdev->wiphy.features &
2343 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2344 CMD(add_tx_ts, ADD_TX_TS);
2345 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2346 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2347 CMD(update_ft_ies, UPDATE_FT_IES);
2348 }
2349 #undef CMD
2350
2351 nla_nest_end(msg, nl_cmds);
2352 state->split_start++;
2353 if (state->split)
2354 break;
2355 fallthrough;
2356 case 5:
2357 if (rdev->ops->remain_on_channel &&
2358 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2359 nla_put_u32(msg,
2360 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2361 rdev->wiphy.max_remain_on_channel_duration))
2362 goto nla_put_failure;
2363
2364 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2365 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2366 goto nla_put_failure;
2367
2368 state->split_start++;
2369 if (state->split)
2370 break;
2371 fallthrough;
2372 case 6:
2373 #ifdef CONFIG_PM
2374 if (nl80211_send_wowlan(msg, rdev, state->split))
2375 goto nla_put_failure;
2376 state->split_start++;
2377 if (state->split)
2378 break;
2379 #else
2380 state->split_start++;
2381 #endif
2382 fallthrough;
2383 case 7:
2384 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2385 rdev->wiphy.software_iftypes))
2386 goto nla_put_failure;
2387
2388 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2389 state->split))
2390 goto nla_put_failure;
2391
2392 state->split_start++;
2393 if (state->split)
2394 break;
2395 fallthrough;
2396 case 8:
2397 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2398 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2399 rdev->wiphy.ap_sme_capa))
2400 goto nla_put_failure;
2401
2402 features = rdev->wiphy.features;
2403 /*
2404 * We can only add the per-channel limit information if the
2405 * dump is split, otherwise it makes it too big. Therefore
2406 * only advertise it in that case.
2407 */
2408 if (state->split)
2409 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2410 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2411 goto nla_put_failure;
2412
2413 if (rdev->wiphy.ht_capa_mod_mask &&
2414 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2415 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2416 rdev->wiphy.ht_capa_mod_mask))
2417 goto nla_put_failure;
2418
2419 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2420 rdev->wiphy.max_acl_mac_addrs &&
2421 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2422 rdev->wiphy.max_acl_mac_addrs))
2423 goto nla_put_failure;
2424
2425 /*
2426 * Any information below this point is only available to
2427 * applications that can deal with it being split. This
2428 * helps ensure that newly added capabilities don't break
2429 * older tools by overrunning their buffers.
2430 *
2431 * We still increment split_start so that in the split
2432 * case we'll continue with more data in the next round,
2433 * but break unconditionally so unsplit data stops here.
2434 */
2435 if (state->split)
2436 state->split_start++;
2437 else
2438 state->split_start = 0;
2439 break;
2440 case 9:
2441 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2442 goto nla_put_failure;
2443
2444 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2445 rdev->wiphy.max_sched_scan_plans) ||
2446 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2447 rdev->wiphy.max_sched_scan_plan_interval) ||
2448 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2449 rdev->wiphy.max_sched_scan_plan_iterations))
2450 goto nla_put_failure;
2451
2452 if (rdev->wiphy.extended_capabilities &&
2453 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2454 rdev->wiphy.extended_capabilities_len,
2455 rdev->wiphy.extended_capabilities) ||
2456 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2457 rdev->wiphy.extended_capabilities_len,
2458 rdev->wiphy.extended_capabilities_mask)))
2459 goto nla_put_failure;
2460
2461 if (rdev->wiphy.vht_capa_mod_mask &&
2462 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2463 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2464 rdev->wiphy.vht_capa_mod_mask))
2465 goto nla_put_failure;
2466
2467 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2468 rdev->wiphy.perm_addr))
2469 goto nla_put_failure;
2470
2471 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2472 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2473 rdev->wiphy.addr_mask))
2474 goto nla_put_failure;
2475
2476 if (rdev->wiphy.n_addresses > 1) {
2477 void *attr;
2478
2479 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2480 if (!attr)
2481 goto nla_put_failure;
2482
2483 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2484 if (nla_put(msg, i + 1, ETH_ALEN,
2485 rdev->wiphy.addresses[i].addr))
2486 goto nla_put_failure;
2487
2488 nla_nest_end(msg, attr);
2489 }
2490
2491 state->split_start++;
2492 break;
2493 case 10:
2494 if (nl80211_send_coalesce(msg, rdev))
2495 goto nla_put_failure;
2496
2497 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2498 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2499 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2500 goto nla_put_failure;
2501
2502 if (rdev->wiphy.max_ap_assoc_sta &&
2503 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2504 rdev->wiphy.max_ap_assoc_sta))
2505 goto nla_put_failure;
2506
2507 state->split_start++;
2508 break;
2509 case 11:
2510 if (rdev->wiphy.n_vendor_commands) {
2511 const struct nl80211_vendor_cmd_info *info;
2512 struct nlattr *nested;
2513
2514 nested = nla_nest_start_noflag(msg,
2515 NL80211_ATTR_VENDOR_DATA);
2516 if (!nested)
2517 goto nla_put_failure;
2518
2519 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2520 info = &rdev->wiphy.vendor_commands[i].info;
2521 if (nla_put(msg, i + 1, sizeof(*info), info))
2522 goto nla_put_failure;
2523 }
2524 nla_nest_end(msg, nested);
2525 }
2526
2527 if (rdev->wiphy.n_vendor_events) {
2528 const struct nl80211_vendor_cmd_info *info;
2529 struct nlattr *nested;
2530
2531 nested = nla_nest_start_noflag(msg,
2532 NL80211_ATTR_VENDOR_EVENTS);
2533 if (!nested)
2534 goto nla_put_failure;
2535
2536 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2537 info = &rdev->wiphy.vendor_events[i];
2538 if (nla_put(msg, i + 1, sizeof(*info), info))
2539 goto nla_put_failure;
2540 }
2541 nla_nest_end(msg, nested);
2542 }
2543 state->split_start++;
2544 break;
2545 case 12:
2546 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2547 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2548 rdev->wiphy.max_num_csa_counters))
2549 goto nla_put_failure;
2550
2551 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2552 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2553 goto nla_put_failure;
2554
2555 if (rdev->wiphy.max_sched_scan_reqs &&
2556 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2557 rdev->wiphy.max_sched_scan_reqs))
2558 goto nla_put_failure;
2559
2560 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2561 sizeof(rdev->wiphy.ext_features),
2562 rdev->wiphy.ext_features))
2563 goto nla_put_failure;
2564
2565 if (rdev->wiphy.bss_select_support) {
2566 struct nlattr *nested;
2567 u32 bss_select_support = rdev->wiphy.bss_select_support;
2568
2569 nested = nla_nest_start_noflag(msg,
2570 NL80211_ATTR_BSS_SELECT);
2571 if (!nested)
2572 goto nla_put_failure;
2573
2574 i = 0;
2575 while (bss_select_support) {
2576 if ((bss_select_support & 1) &&
2577 nla_put_flag(msg, i))
2578 goto nla_put_failure;
2579 i++;
2580 bss_select_support >>= 1;
2581 }
2582 nla_nest_end(msg, nested);
2583 }
2584
2585 state->split_start++;
2586 break;
2587 case 13:
2588 if (rdev->wiphy.num_iftype_ext_capab &&
2589 rdev->wiphy.iftype_ext_capab) {
2590 struct nlattr *nested_ext_capab, *nested;
2591
2592 nested = nla_nest_start_noflag(msg,
2593 NL80211_ATTR_IFTYPE_EXT_CAPA);
2594 if (!nested)
2595 goto nla_put_failure;
2596
2597 for (i = state->capa_start;
2598 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2599 const struct wiphy_iftype_ext_capab *capab;
2600
2601 capab = &rdev->wiphy.iftype_ext_capab[i];
2602
2603 nested_ext_capab = nla_nest_start_noflag(msg,
2604 i);
2605 if (!nested_ext_capab ||
2606 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2607 capab->iftype) ||
2608 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2609 capab->extended_capabilities_len,
2610 capab->extended_capabilities) ||
2611 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2612 capab->extended_capabilities_len,
2613 capab->extended_capabilities_mask))
2614 goto nla_put_failure;
2615
2616 nla_nest_end(msg, nested_ext_capab);
2617 if (state->split)
2618 break;
2619 }
2620 nla_nest_end(msg, nested);
2621 if (i < rdev->wiphy.num_iftype_ext_capab) {
2622 state->capa_start = i + 1;
2623 break;
2624 }
2625 }
2626
2627 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2628 rdev->wiphy.nan_supported_bands))
2629 goto nla_put_failure;
2630
2631 if (wiphy_ext_feature_isset(&rdev->wiphy,
2632 NL80211_EXT_FEATURE_TXQS)) {
2633 struct cfg80211_txq_stats txqstats = {};
2634 int res;
2635
2636 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2637 if (!res &&
2638 !nl80211_put_txq_stats(msg, &txqstats,
2639 NL80211_ATTR_TXQ_STATS))
2640 goto nla_put_failure;
2641
2642 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2643 rdev->wiphy.txq_limit))
2644 goto nla_put_failure;
2645 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2646 rdev->wiphy.txq_memory_limit))
2647 goto nla_put_failure;
2648 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2649 rdev->wiphy.txq_quantum))
2650 goto nla_put_failure;
2651 }
2652
2653 state->split_start++;
2654 break;
2655 case 14:
2656 if (nl80211_send_pmsr_capa(rdev, msg))
2657 goto nla_put_failure;
2658
2659 state->split_start++;
2660 break;
2661 case 15:
2662 if (rdev->wiphy.akm_suites &&
2663 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2664 sizeof(u32) * rdev->wiphy.n_akm_suites,
2665 rdev->wiphy.akm_suites))
2666 goto nla_put_failure;
2667
2668 if (nl80211_put_iftype_akm_suites(rdev, msg))
2669 goto nla_put_failure;
2670
2671 if (nl80211_put_tid_config_support(rdev, msg))
2672 goto nla_put_failure;
2673
2674 /* done */
2675 state->split_start = 0;
2676 break;
2677 }
2678 finish:
2679 genlmsg_end(msg, hdr);
2680 return 0;
2681
2682 nla_put_failure:
2683 genlmsg_cancel(msg, hdr);
2684 return -EMSGSIZE;
2685 }
2686
nl80211_dump_wiphy_parse(struct sk_buff * skb,struct netlink_callback * cb,struct nl80211_dump_wiphy_state * state)2687 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2688 struct netlink_callback *cb,
2689 struct nl80211_dump_wiphy_state *state)
2690 {
2691 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2692 int ret;
2693
2694 if (!tb)
2695 return -ENOMEM;
2696
2697 ret = nlmsg_parse_deprecated(cb->nlh,
2698 GENL_HDRLEN + nl80211_fam.hdrsize,
2699 tb, nl80211_fam.maxattr,
2700 nl80211_policy, NULL);
2701 /* ignore parse errors for backward compatibility */
2702 if (ret) {
2703 ret = 0;
2704 goto out;
2705 }
2706
2707 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2708 if (tb[NL80211_ATTR_WIPHY])
2709 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2710 if (tb[NL80211_ATTR_WDEV])
2711 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2712 if (tb[NL80211_ATTR_IFINDEX]) {
2713 struct net_device *netdev;
2714 struct cfg80211_registered_device *rdev;
2715 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2716
2717 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2718 if (!netdev) {
2719 ret = -ENODEV;
2720 goto out;
2721 }
2722 if (netdev->ieee80211_ptr) {
2723 rdev = wiphy_to_rdev(
2724 netdev->ieee80211_ptr->wiphy);
2725 state->filter_wiphy = rdev->wiphy_idx;
2726 }
2727 }
2728
2729 ret = 0;
2730 out:
2731 kfree(tb);
2732 return ret;
2733 }
2734
nl80211_dump_wiphy(struct sk_buff * skb,struct netlink_callback * cb)2735 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2736 {
2737 int idx = 0, ret;
2738 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2739 struct cfg80211_registered_device *rdev;
2740
2741 rtnl_lock();
2742 if (!state) {
2743 state = kzalloc(sizeof(*state), GFP_KERNEL);
2744 if (!state) {
2745 rtnl_unlock();
2746 return -ENOMEM;
2747 }
2748 state->filter_wiphy = -1;
2749 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2750 if (ret) {
2751 kfree(state);
2752 rtnl_unlock();
2753 return ret;
2754 }
2755 cb->args[0] = (long)state;
2756 }
2757
2758 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2759 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2760 continue;
2761 if (++idx <= state->start)
2762 continue;
2763 if (state->filter_wiphy != -1 &&
2764 state->filter_wiphy != rdev->wiphy_idx)
2765 continue;
2766 /* attempt to fit multiple wiphy data chunks into the skb */
2767 do {
2768 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2769 skb,
2770 NETLINK_CB(cb->skb).portid,
2771 cb->nlh->nlmsg_seq,
2772 NLM_F_MULTI, state);
2773 if (ret < 0) {
2774 /*
2775 * If sending the wiphy data didn't fit (ENOBUFS
2776 * or EMSGSIZE returned), this SKB is still
2777 * empty (so it's not too big because another
2778 * wiphy dataset is already in the skb) and
2779 * we've not tried to adjust the dump allocation
2780 * yet ... then adjust the alloc size to be
2781 * bigger, and return 1 but with the empty skb.
2782 * This results in an empty message being RX'ed
2783 * in userspace, but that is ignored.
2784 *
2785 * We can then retry with the larger buffer.
2786 */
2787 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2788 !skb->len && !state->split &&
2789 cb->min_dump_alloc < 4096) {
2790 cb->min_dump_alloc = 4096;
2791 state->split_start = 0;
2792 rtnl_unlock();
2793 return 1;
2794 }
2795 idx--;
2796 break;
2797 }
2798 } while (state->split_start > 0);
2799 break;
2800 }
2801 rtnl_unlock();
2802
2803 state->start = idx;
2804
2805 return skb->len;
2806 }
2807
nl80211_dump_wiphy_done(struct netlink_callback * cb)2808 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2809 {
2810 kfree((void *)cb->args[0]);
2811 return 0;
2812 }
2813
nl80211_get_wiphy(struct sk_buff * skb,struct genl_info * info)2814 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2815 {
2816 struct sk_buff *msg;
2817 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2818 struct nl80211_dump_wiphy_state state = {};
2819
2820 msg = nlmsg_new(4096, GFP_KERNEL);
2821 if (!msg)
2822 return -ENOMEM;
2823
2824 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2825 info->snd_portid, info->snd_seq, 0,
2826 &state) < 0) {
2827 nlmsg_free(msg);
2828 return -ENOBUFS;
2829 }
2830
2831 return genlmsg_reply(msg, info);
2832 }
2833
2834 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2835 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2836 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2837 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2838 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2839 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2840 };
2841
parse_txq_params(struct nlattr * tb[],struct ieee80211_txq_params * txq_params)2842 static int parse_txq_params(struct nlattr *tb[],
2843 struct ieee80211_txq_params *txq_params)
2844 {
2845 u8 ac;
2846
2847 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2848 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2849 !tb[NL80211_TXQ_ATTR_AIFS])
2850 return -EINVAL;
2851
2852 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2853 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2854 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2855 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2856 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2857
2858 if (ac >= NL80211_NUM_ACS)
2859 return -EINVAL;
2860 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2861 return 0;
2862 }
2863
nl80211_can_set_dev_channel(struct wireless_dev * wdev)2864 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2865 {
2866 /*
2867 * You can only set the channel explicitly for WDS interfaces,
2868 * all others have their channel managed via their respective
2869 * "establish a connection" command (connect, join, ...)
2870 *
2871 * For AP/GO and mesh mode, the channel can be set with the
2872 * channel userspace API, but is only stored and passed to the
2873 * low-level driver when the AP starts or the mesh is joined.
2874 * This is for backward compatibility, userspace can also give
2875 * the channel in the start-ap or join-mesh commands instead.
2876 *
2877 * Monitors are special as they are normally slaved to
2878 * whatever else is going on, so they have their own special
2879 * operation to set the monitor channel if possible.
2880 */
2881 return !wdev ||
2882 wdev->iftype == NL80211_IFTYPE_AP ||
2883 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2884 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2885 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2886 }
2887
nl80211_parse_chandef(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_chan_def * chandef)2888 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2889 struct genl_info *info,
2890 struct cfg80211_chan_def *chandef)
2891 {
2892 struct netlink_ext_ack *extack = info->extack;
2893 struct nlattr **attrs = info->attrs;
2894 u32 control_freq;
2895
2896 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2897 return -EINVAL;
2898
2899 control_freq = MHZ_TO_KHZ(
2900 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2901 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2902 control_freq +=
2903 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2904
2905 memset(chandef, 0, sizeof(*chandef));
2906 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2907 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2908 chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2909 chandef->freq1_offset = control_freq % 1000;
2910 chandef->center_freq2 = 0;
2911
2912 /* Primary channel not allowed */
2913 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2914 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2915 "Channel is disabled");
2916 return -EINVAL;
2917 }
2918
2919 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2920 enum nl80211_channel_type chantype;
2921
2922 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2923
2924 switch (chantype) {
2925 case NL80211_CHAN_NO_HT:
2926 case NL80211_CHAN_HT20:
2927 case NL80211_CHAN_HT40PLUS:
2928 case NL80211_CHAN_HT40MINUS:
2929 cfg80211_chandef_create(chandef, chandef->chan,
2930 chantype);
2931 /* user input for center_freq is incorrect */
2932 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2933 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2934 NL_SET_ERR_MSG_ATTR(extack,
2935 attrs[NL80211_ATTR_CENTER_FREQ1],
2936 "bad center frequency 1");
2937 return -EINVAL;
2938 }
2939 /* center_freq2 must be zero */
2940 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2941 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2942 NL_SET_ERR_MSG_ATTR(extack,
2943 attrs[NL80211_ATTR_CENTER_FREQ2],
2944 "center frequency 2 can't be used");
2945 return -EINVAL;
2946 }
2947 break;
2948 default:
2949 NL_SET_ERR_MSG_ATTR(extack,
2950 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2951 "invalid channel type");
2952 return -EINVAL;
2953 }
2954 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2955 chandef->width =
2956 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2957 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2958 chandef->center_freq1 =
2959 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2960 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2961 chandef->freq1_offset = nla_get_u32(
2962 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2963 else
2964 chandef->freq1_offset = 0;
2965 }
2966 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2967 chandef->center_freq2 =
2968 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2969 }
2970
2971 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2972 chandef->edmg.channels =
2973 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2974
2975 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2976 chandef->edmg.bw_config =
2977 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2978 } else {
2979 chandef->edmg.bw_config = 0;
2980 chandef->edmg.channels = 0;
2981 }
2982
2983 if (!cfg80211_chandef_valid(chandef)) {
2984 NL_SET_ERR_MSG(extack, "invalid channel definition");
2985 return -EINVAL;
2986 }
2987
2988 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2989 IEEE80211_CHAN_DISABLED)) {
2990 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2991 return -EINVAL;
2992 }
2993
2994 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2995 chandef->width == NL80211_CHAN_WIDTH_10) &&
2996 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2997 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2998 return -EINVAL;
2999 }
3000
3001 return 0;
3002 }
3003
__nl80211_set_channel(struct cfg80211_registered_device * rdev,struct net_device * dev,struct genl_info * info)3004 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3005 struct net_device *dev,
3006 struct genl_info *info)
3007 {
3008 struct cfg80211_chan_def chandef;
3009 int result;
3010 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3011 struct wireless_dev *wdev = NULL;
3012
3013 if (dev)
3014 wdev = dev->ieee80211_ptr;
3015 if (!nl80211_can_set_dev_channel(wdev))
3016 return -EOPNOTSUPP;
3017 if (wdev)
3018 iftype = wdev->iftype;
3019
3020 result = nl80211_parse_chandef(rdev, info, &chandef);
3021 if (result)
3022 return result;
3023
3024 switch (iftype) {
3025 case NL80211_IFTYPE_AP:
3026 case NL80211_IFTYPE_P2P_GO:
3027 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3028 iftype)) {
3029 result = -EINVAL;
3030 break;
3031 }
3032 if (wdev->beacon_interval) {
3033 if (!dev || !rdev->ops->set_ap_chanwidth ||
3034 !(rdev->wiphy.features &
3035 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3036 result = -EBUSY;
3037 break;
3038 }
3039
3040 /* Only allow dynamic channel width changes */
3041 if (chandef.chan != wdev->preset_chandef.chan) {
3042 result = -EBUSY;
3043 break;
3044 }
3045 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3046 if (result)
3047 break;
3048 }
3049 wdev->preset_chandef = chandef;
3050 result = 0;
3051 break;
3052 case NL80211_IFTYPE_MESH_POINT:
3053 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3054 break;
3055 case NL80211_IFTYPE_MONITOR:
3056 result = cfg80211_set_monitor_channel(rdev, &chandef);
3057 break;
3058 default:
3059 result = -EINVAL;
3060 }
3061
3062 return result;
3063 }
3064
nl80211_set_channel(struct sk_buff * skb,struct genl_info * info)3065 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3066 {
3067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3068 struct net_device *netdev = info->user_ptr[1];
3069
3070 return __nl80211_set_channel(rdev, netdev, info);
3071 }
3072
nl80211_set_wds_peer(struct sk_buff * skb,struct genl_info * info)3073 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
3074 {
3075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3076 struct net_device *dev = info->user_ptr[1];
3077 struct wireless_dev *wdev = dev->ieee80211_ptr;
3078 const u8 *bssid;
3079
3080 if (!info->attrs[NL80211_ATTR_MAC])
3081 return -EINVAL;
3082
3083 if (netif_running(dev))
3084 return -EBUSY;
3085
3086 if (!rdev->ops->set_wds_peer)
3087 return -EOPNOTSUPP;
3088
3089 if (wdev->iftype != NL80211_IFTYPE_WDS)
3090 return -EOPNOTSUPP;
3091
3092 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3093 return rdev_set_wds_peer(rdev, dev, bssid);
3094 }
3095
nl80211_set_wiphy(struct sk_buff * skb,struct genl_info * info)3096 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3097 {
3098 struct cfg80211_registered_device *rdev;
3099 struct net_device *netdev = NULL;
3100 struct wireless_dev *wdev;
3101 int result = 0, rem_txq_params = 0;
3102 struct nlattr *nl_txq_params;
3103 u32 changed;
3104 u8 retry_short = 0, retry_long = 0;
3105 u32 frag_threshold = 0, rts_threshold = 0;
3106 u8 coverage_class = 0;
3107 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3108
3109 ASSERT_RTNL();
3110
3111 /*
3112 * Try to find the wiphy and netdev. Normally this
3113 * function shouldn't need the netdev, but this is
3114 * done for backward compatibility -- previously
3115 * setting the channel was done per wiphy, but now
3116 * it is per netdev. Previous userland like hostapd
3117 * also passed a netdev to set_wiphy, so that it is
3118 * possible to let that go to the right netdev!
3119 */
3120
3121 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3122 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3123
3124 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3125 if (netdev && netdev->ieee80211_ptr)
3126 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3127 else
3128 netdev = NULL;
3129 }
3130
3131 if (!netdev) {
3132 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3133 info->attrs);
3134 if (IS_ERR(rdev))
3135 return PTR_ERR(rdev);
3136 wdev = NULL;
3137 netdev = NULL;
3138 result = 0;
3139 } else
3140 wdev = netdev->ieee80211_ptr;
3141
3142 /*
3143 * end workaround code, by now the rdev is available
3144 * and locked, and wdev may or may not be NULL.
3145 */
3146
3147 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3148 result = cfg80211_dev_rename(
3149 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3150
3151 if (result)
3152 return result;
3153
3154 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3155 struct ieee80211_txq_params txq_params;
3156 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3157
3158 if (!rdev->ops->set_txq_params)
3159 return -EOPNOTSUPP;
3160
3161 if (!netdev)
3162 return -EINVAL;
3163
3164 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3165 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3166 return -EINVAL;
3167
3168 if (!netif_running(netdev))
3169 return -ENETDOWN;
3170
3171 nla_for_each_nested(nl_txq_params,
3172 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3173 rem_txq_params) {
3174 result = nla_parse_nested_deprecated(tb,
3175 NL80211_TXQ_ATTR_MAX,
3176 nl_txq_params,
3177 txq_params_policy,
3178 info->extack);
3179 if (result)
3180 return result;
3181 result = parse_txq_params(tb, &txq_params);
3182 if (result)
3183 return result;
3184
3185 result = rdev_set_txq_params(rdev, netdev,
3186 &txq_params);
3187 if (result)
3188 return result;
3189 }
3190 }
3191
3192 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3193 result = __nl80211_set_channel(
3194 rdev,
3195 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3196 info);
3197 if (result)
3198 return result;
3199 }
3200
3201 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3202 struct wireless_dev *txp_wdev = wdev;
3203 enum nl80211_tx_power_setting type;
3204 int idx, mbm = 0;
3205
3206 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3207 txp_wdev = NULL;
3208
3209 if (!rdev->ops->set_tx_power)
3210 return -EOPNOTSUPP;
3211
3212 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3213 type = nla_get_u32(info->attrs[idx]);
3214
3215 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3216 (type != NL80211_TX_POWER_AUTOMATIC))
3217 return -EINVAL;
3218
3219 if (type != NL80211_TX_POWER_AUTOMATIC) {
3220 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3221 mbm = nla_get_u32(info->attrs[idx]);
3222 }
3223
3224 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3225 if (result)
3226 return result;
3227 }
3228
3229 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3230 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3231 u32 tx_ant, rx_ant;
3232
3233 if ((!rdev->wiphy.available_antennas_tx &&
3234 !rdev->wiphy.available_antennas_rx) ||
3235 !rdev->ops->set_antenna)
3236 return -EOPNOTSUPP;
3237
3238 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3239 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3240
3241 /* reject antenna configurations which don't match the
3242 * available antenna masks, except for the "all" mask */
3243 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3244 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3245 return -EINVAL;
3246
3247 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3248 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3249
3250 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3251 if (result)
3252 return result;
3253 }
3254
3255 changed = 0;
3256
3257 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3258 retry_short = nla_get_u8(
3259 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3260
3261 changed |= WIPHY_PARAM_RETRY_SHORT;
3262 }
3263
3264 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3265 retry_long = nla_get_u8(
3266 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3267
3268 changed |= WIPHY_PARAM_RETRY_LONG;
3269 }
3270
3271 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3272 frag_threshold = nla_get_u32(
3273 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3274 if (frag_threshold < 256)
3275 return -EINVAL;
3276
3277 if (frag_threshold != (u32) -1) {
3278 /*
3279 * Fragments (apart from the last one) are required to
3280 * have even length. Make the fragmentation code
3281 * simpler by stripping LSB should someone try to use
3282 * odd threshold value.
3283 */
3284 frag_threshold &= ~0x1;
3285 }
3286 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3287 }
3288
3289 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3290 rts_threshold = nla_get_u32(
3291 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3292 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3293 }
3294
3295 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3296 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3297 return -EINVAL;
3298
3299 coverage_class = nla_get_u8(
3300 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3301 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3302 }
3303
3304 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3305 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3306 return -EOPNOTSUPP;
3307
3308 changed |= WIPHY_PARAM_DYN_ACK;
3309 }
3310
3311 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3312 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3313 NL80211_EXT_FEATURE_TXQS))
3314 return -EOPNOTSUPP;
3315 txq_limit = nla_get_u32(
3316 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3317 changed |= WIPHY_PARAM_TXQ_LIMIT;
3318 }
3319
3320 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3321 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3322 NL80211_EXT_FEATURE_TXQS))
3323 return -EOPNOTSUPP;
3324 txq_memory_limit = nla_get_u32(
3325 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3326 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3327 }
3328
3329 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3330 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3331 NL80211_EXT_FEATURE_TXQS))
3332 return -EOPNOTSUPP;
3333 txq_quantum = nla_get_u32(
3334 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3335 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3336 }
3337
3338 if (changed) {
3339 u8 old_retry_short, old_retry_long;
3340 u32 old_frag_threshold, old_rts_threshold;
3341 u8 old_coverage_class;
3342 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3343
3344 if (!rdev->ops->set_wiphy_params)
3345 return -EOPNOTSUPP;
3346
3347 old_retry_short = rdev->wiphy.retry_short;
3348 old_retry_long = rdev->wiphy.retry_long;
3349 old_frag_threshold = rdev->wiphy.frag_threshold;
3350 old_rts_threshold = rdev->wiphy.rts_threshold;
3351 old_coverage_class = rdev->wiphy.coverage_class;
3352 old_txq_limit = rdev->wiphy.txq_limit;
3353 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3354 old_txq_quantum = rdev->wiphy.txq_quantum;
3355
3356 if (changed & WIPHY_PARAM_RETRY_SHORT)
3357 rdev->wiphy.retry_short = retry_short;
3358 if (changed & WIPHY_PARAM_RETRY_LONG)
3359 rdev->wiphy.retry_long = retry_long;
3360 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3361 rdev->wiphy.frag_threshold = frag_threshold;
3362 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3363 rdev->wiphy.rts_threshold = rts_threshold;
3364 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3365 rdev->wiphy.coverage_class = coverage_class;
3366 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3367 rdev->wiphy.txq_limit = txq_limit;
3368 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3369 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3370 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3371 rdev->wiphy.txq_quantum = txq_quantum;
3372
3373 result = rdev_set_wiphy_params(rdev, changed);
3374 if (result) {
3375 rdev->wiphy.retry_short = old_retry_short;
3376 rdev->wiphy.retry_long = old_retry_long;
3377 rdev->wiphy.frag_threshold = old_frag_threshold;
3378 rdev->wiphy.rts_threshold = old_rts_threshold;
3379 rdev->wiphy.coverage_class = old_coverage_class;
3380 rdev->wiphy.txq_limit = old_txq_limit;
3381 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3382 rdev->wiphy.txq_quantum = old_txq_quantum;
3383 return result;
3384 }
3385 }
3386 return 0;
3387 }
3388
nl80211_send_chandef(struct sk_buff * msg,const struct cfg80211_chan_def * chandef)3389 static int nl80211_send_chandef(struct sk_buff *msg,
3390 const struct cfg80211_chan_def *chandef)
3391 {
3392 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3393 return -EINVAL;
3394
3395 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3396 chandef->chan->center_freq))
3397 return -ENOBUFS;
3398 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3399 chandef->chan->freq_offset))
3400 return -ENOBUFS;
3401 switch (chandef->width) {
3402 case NL80211_CHAN_WIDTH_20_NOHT:
3403 case NL80211_CHAN_WIDTH_20:
3404 case NL80211_CHAN_WIDTH_40:
3405 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3406 cfg80211_get_chandef_type(chandef)))
3407 return -ENOBUFS;
3408 break;
3409 default:
3410 break;
3411 }
3412 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3413 return -ENOBUFS;
3414 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3415 return -ENOBUFS;
3416 if (chandef->center_freq2 &&
3417 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3418 return -ENOBUFS;
3419 return 0;
3420 }
3421
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)3422 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3423 struct cfg80211_registered_device *rdev,
3424 struct wireless_dev *wdev,
3425 enum nl80211_commands cmd)
3426 {
3427 struct net_device *dev = wdev->netdev;
3428 void *hdr;
3429
3430 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3431 cmd != NL80211_CMD_DEL_INTERFACE &&
3432 cmd != NL80211_CMD_SET_INTERFACE);
3433
3434 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3435 if (!hdr)
3436 return -1;
3437
3438 if (dev &&
3439 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3440 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3441 goto nla_put_failure;
3442
3443 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3444 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3445 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3446 NL80211_ATTR_PAD) ||
3447 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3448 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3449 rdev->devlist_generation ^
3450 (cfg80211_rdev_list_generation << 2)) ||
3451 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3452 goto nla_put_failure;
3453
3454 if (rdev->ops->get_channel) {
3455 int ret;
3456 struct cfg80211_chan_def chandef = {};
3457
3458 ret = rdev_get_channel(rdev, wdev, &chandef);
3459 if (ret == 0) {
3460 if (nl80211_send_chandef(msg, &chandef))
3461 goto nla_put_failure;
3462 }
3463 }
3464
3465 if (rdev->ops->get_tx_power) {
3466 int dbm, ret;
3467
3468 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3469 if (ret == 0 &&
3470 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3471 DBM_TO_MBM(dbm)))
3472 goto nla_put_failure;
3473 }
3474
3475 wdev_lock(wdev);
3476 switch (wdev->iftype) {
3477 case NL80211_IFTYPE_AP:
3478 if (wdev->ssid_len &&
3479 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3480 goto nla_put_failure_locked;
3481 break;
3482 case NL80211_IFTYPE_STATION:
3483 case NL80211_IFTYPE_P2P_CLIENT:
3484 case NL80211_IFTYPE_ADHOC: {
3485 const u8 *ssid_ie;
3486 if (!wdev->current_bss)
3487 break;
3488 rcu_read_lock();
3489 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3490 WLAN_EID_SSID);
3491 if (ssid_ie &&
3492 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3493 goto nla_put_failure_rcu_locked;
3494 rcu_read_unlock();
3495 break;
3496 }
3497 default:
3498 /* nothing */
3499 break;
3500 }
3501 wdev_unlock(wdev);
3502
3503 if (rdev->ops->get_txq_stats) {
3504 struct cfg80211_txq_stats txqstats = {};
3505 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3506
3507 if (ret == 0 &&
3508 !nl80211_put_txq_stats(msg, &txqstats,
3509 NL80211_ATTR_TXQ_STATS))
3510 goto nla_put_failure;
3511 }
3512
3513 genlmsg_end(msg, hdr);
3514 return 0;
3515
3516 nla_put_failure_rcu_locked:
3517 rcu_read_unlock();
3518 nla_put_failure_locked:
3519 wdev_unlock(wdev);
3520 nla_put_failure:
3521 genlmsg_cancel(msg, hdr);
3522 return -EMSGSIZE;
3523 }
3524
nl80211_dump_interface(struct sk_buff * skb,struct netlink_callback * cb)3525 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3526 {
3527 int wp_idx = 0;
3528 int if_idx = 0;
3529 int wp_start = cb->args[0];
3530 int if_start = cb->args[1];
3531 int filter_wiphy = -1;
3532 struct cfg80211_registered_device *rdev;
3533 struct wireless_dev *wdev;
3534 int ret;
3535
3536 rtnl_lock();
3537 if (!cb->args[2]) {
3538 struct nl80211_dump_wiphy_state state = {
3539 .filter_wiphy = -1,
3540 };
3541
3542 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3543 if (ret)
3544 goto out_unlock;
3545
3546 filter_wiphy = state.filter_wiphy;
3547
3548 /*
3549 * if filtering, set cb->args[2] to +1 since 0 is the default
3550 * value needed to determine that parsing is necessary.
3551 */
3552 if (filter_wiphy >= 0)
3553 cb->args[2] = filter_wiphy + 1;
3554 else
3555 cb->args[2] = -1;
3556 } else if (cb->args[2] > 0) {
3557 filter_wiphy = cb->args[2] - 1;
3558 }
3559
3560 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3561 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3562 continue;
3563 if (wp_idx < wp_start) {
3564 wp_idx++;
3565 continue;
3566 }
3567
3568 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3569 continue;
3570
3571 if_idx = 0;
3572
3573 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3574 if (if_idx < if_start) {
3575 if_idx++;
3576 continue;
3577 }
3578 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3579 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3580 rdev, wdev,
3581 NL80211_CMD_NEW_INTERFACE) < 0) {
3582 goto out;
3583 }
3584 if_idx++;
3585 }
3586
3587 wp_idx++;
3588 }
3589 out:
3590 cb->args[0] = wp_idx;
3591 cb->args[1] = if_idx;
3592
3593 ret = skb->len;
3594 out_unlock:
3595 rtnl_unlock();
3596
3597 return ret;
3598 }
3599
nl80211_get_interface(struct sk_buff * skb,struct genl_info * info)3600 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3601 {
3602 struct sk_buff *msg;
3603 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3604 struct wireless_dev *wdev = info->user_ptr[1];
3605
3606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3607 if (!msg)
3608 return -ENOMEM;
3609
3610 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3611 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3612 nlmsg_free(msg);
3613 return -ENOBUFS;
3614 }
3615
3616 return genlmsg_reply(msg, info);
3617 }
3618
3619 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3620 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3621 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3622 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3623 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3624 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3625 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3626 };
3627
parse_monitor_flags(struct nlattr * nla,u32 * mntrflags)3628 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3629 {
3630 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3631 int flag;
3632
3633 *mntrflags = 0;
3634
3635 if (!nla)
3636 return -EINVAL;
3637
3638 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3639 return -EINVAL;
3640
3641 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3642 if (flags[flag])
3643 *mntrflags |= (1<<flag);
3644
3645 *mntrflags |= MONITOR_FLAG_CHANGED;
3646
3647 return 0;
3648 }
3649
nl80211_parse_mon_options(struct cfg80211_registered_device * rdev,enum nl80211_iftype type,struct genl_info * info,struct vif_params * params)3650 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3651 enum nl80211_iftype type,
3652 struct genl_info *info,
3653 struct vif_params *params)
3654 {
3655 bool change = false;
3656 int err;
3657
3658 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3659 if (type != NL80211_IFTYPE_MONITOR)
3660 return -EINVAL;
3661
3662 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3663 ¶ms->flags);
3664 if (err)
3665 return err;
3666
3667 change = true;
3668 }
3669
3670 if (params->flags & MONITOR_FLAG_ACTIVE &&
3671 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3672 return -EOPNOTSUPP;
3673
3674 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3675 const u8 *mumimo_groups;
3676 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3677
3678 if (type != NL80211_IFTYPE_MONITOR)
3679 return -EINVAL;
3680
3681 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3682 return -EOPNOTSUPP;
3683
3684 mumimo_groups =
3685 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3686
3687 /* bits 0 and 63 are reserved and must be zero */
3688 if ((mumimo_groups[0] & BIT(0)) ||
3689 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3690 return -EINVAL;
3691
3692 params->vht_mumimo_groups = mumimo_groups;
3693 change = true;
3694 }
3695
3696 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3697 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3698
3699 if (type != NL80211_IFTYPE_MONITOR)
3700 return -EINVAL;
3701
3702 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3703 return -EOPNOTSUPP;
3704
3705 params->vht_mumimo_follow_addr =
3706 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3707 change = true;
3708 }
3709
3710 return change ? 1 : 0;
3711 }
3712
nl80211_valid_4addr(struct cfg80211_registered_device * rdev,struct net_device * netdev,u8 use_4addr,enum nl80211_iftype iftype)3713 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3714 struct net_device *netdev, u8 use_4addr,
3715 enum nl80211_iftype iftype)
3716 {
3717 if (!use_4addr) {
3718 if (netdev && netif_is_bridge_port(netdev))
3719 return -EBUSY;
3720 return 0;
3721 }
3722
3723 switch (iftype) {
3724 case NL80211_IFTYPE_AP_VLAN:
3725 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3726 return 0;
3727 break;
3728 case NL80211_IFTYPE_STATION:
3729 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3730 return 0;
3731 break;
3732 default:
3733 break;
3734 }
3735
3736 return -EOPNOTSUPP;
3737 }
3738
nl80211_set_interface(struct sk_buff * skb,struct genl_info * info)3739 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3740 {
3741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3742 struct vif_params params;
3743 int err;
3744 enum nl80211_iftype otype, ntype;
3745 struct net_device *dev = info->user_ptr[1];
3746 bool change = false;
3747
3748 memset(¶ms, 0, sizeof(params));
3749
3750 otype = ntype = dev->ieee80211_ptr->iftype;
3751
3752 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3753 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3754 if (otype != ntype)
3755 change = true;
3756 }
3757
3758 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3759 struct wireless_dev *wdev = dev->ieee80211_ptr;
3760
3761 if (ntype != NL80211_IFTYPE_MESH_POINT)
3762 return -EINVAL;
3763 if (netif_running(dev))
3764 return -EBUSY;
3765
3766 wdev_lock(wdev);
3767 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3768 IEEE80211_MAX_MESH_ID_LEN);
3769 wdev->mesh_id_up_len =
3770 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3771 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3772 wdev->mesh_id_up_len);
3773 wdev_unlock(wdev);
3774 }
3775
3776 if (info->attrs[NL80211_ATTR_4ADDR]) {
3777 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3778 change = true;
3779 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3780 if (err)
3781 return err;
3782 } else {
3783 params.use_4addr = -1;
3784 }
3785
3786 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms);
3787 if (err < 0)
3788 return err;
3789 if (err > 0)
3790 change = true;
3791
3792 if (change)
3793 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms);
3794 else
3795 err = 0;
3796
3797 if (!err && params.use_4addr != -1)
3798 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3799
3800 if (change && !err) {
3801 struct wireless_dev *wdev = dev->ieee80211_ptr;
3802
3803 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3804 }
3805
3806 return err;
3807 }
3808
nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)3809 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3810 {
3811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3812 struct vif_params params;
3813 struct wireless_dev *wdev;
3814 struct sk_buff *msg;
3815 int err;
3816 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3817
3818 /* to avoid failing a new interface creation due to pending removal */
3819 cfg80211_destroy_ifaces(rdev);
3820
3821 memset(¶ms, 0, sizeof(params));
3822
3823 if (!info->attrs[NL80211_ATTR_IFNAME])
3824 return -EINVAL;
3825
3826 if (info->attrs[NL80211_ATTR_IFTYPE])
3827 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3828
3829 if (!rdev->ops->add_virtual_intf)
3830 return -EOPNOTSUPP;
3831
3832 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3833 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3834 info->attrs[NL80211_ATTR_MAC]) {
3835 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3836 ETH_ALEN);
3837 if (!is_valid_ether_addr(params.macaddr))
3838 return -EADDRNOTAVAIL;
3839 }
3840
3841 if (info->attrs[NL80211_ATTR_4ADDR]) {
3842 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3843 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3844 if (err)
3845 return err;
3846 }
3847
3848 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3849 return -EOPNOTSUPP;
3850
3851 err = nl80211_parse_mon_options(rdev, type, info, ¶ms);
3852 if (err < 0)
3853 return err;
3854
3855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3856 if (!msg)
3857 return -ENOMEM;
3858
3859 wdev = rdev_add_virtual_intf(rdev,
3860 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3861 NET_NAME_USER, type, ¶ms);
3862 if (WARN_ON(!wdev)) {
3863 nlmsg_free(msg);
3864 return -EPROTO;
3865 } else if (IS_ERR(wdev)) {
3866 nlmsg_free(msg);
3867 return PTR_ERR(wdev);
3868 }
3869
3870 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3871 wdev->owner_nlportid = info->snd_portid;
3872
3873 switch (type) {
3874 case NL80211_IFTYPE_MESH_POINT:
3875 if (!info->attrs[NL80211_ATTR_MESH_ID])
3876 break;
3877 wdev_lock(wdev);
3878 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3879 IEEE80211_MAX_MESH_ID_LEN);
3880 wdev->mesh_id_up_len =
3881 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3882 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3883 wdev->mesh_id_up_len);
3884 wdev_unlock(wdev);
3885 break;
3886 case NL80211_IFTYPE_NAN:
3887 case NL80211_IFTYPE_P2P_DEVICE:
3888 /*
3889 * P2P Device and NAN do not have a netdev, so don't go
3890 * through the netdev notifier and must be added here
3891 */
3892 cfg80211_init_wdev(wdev);
3893 cfg80211_register_wdev(rdev, wdev);
3894 break;
3895 default:
3896 break;
3897 }
3898
3899 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3900 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3901 nlmsg_free(msg);
3902 return -ENOBUFS;
3903 }
3904
3905 return genlmsg_reply(msg, info);
3906 }
3907
nl80211_del_interface(struct sk_buff * skb,struct genl_info * info)3908 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3909 {
3910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3911 struct wireless_dev *wdev = info->user_ptr[1];
3912
3913 if (!rdev->ops->del_virtual_intf)
3914 return -EOPNOTSUPP;
3915
3916 /*
3917 * If we remove a wireless device without a netdev then clear
3918 * user_ptr[1] so that nl80211_post_doit won't dereference it
3919 * to check if it needs to do dev_put(). Otherwise it crashes
3920 * since the wdev has been freed, unlike with a netdev where
3921 * we need the dev_put() for the netdev to really be freed.
3922 */
3923 if (!wdev->netdev)
3924 info->user_ptr[1] = NULL;
3925
3926 return rdev_del_virtual_intf(rdev, wdev);
3927 }
3928
nl80211_set_noack_map(struct sk_buff * skb,struct genl_info * info)3929 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3930 {
3931 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3932 struct net_device *dev = info->user_ptr[1];
3933 u16 noack_map;
3934
3935 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3936 return -EINVAL;
3937
3938 if (!rdev->ops->set_noack_map)
3939 return -EOPNOTSUPP;
3940
3941 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3942
3943 return rdev_set_noack_map(rdev, dev, noack_map);
3944 }
3945
3946 struct get_key_cookie {
3947 struct sk_buff *msg;
3948 int error;
3949 int idx;
3950 };
3951
get_key_callback(void * c,struct key_params * params)3952 static void get_key_callback(void *c, struct key_params *params)
3953 {
3954 struct nlattr *key;
3955 struct get_key_cookie *cookie = c;
3956
3957 if ((params->key &&
3958 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3959 params->key_len, params->key)) ||
3960 (params->seq &&
3961 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3962 params->seq_len, params->seq)) ||
3963 (params->cipher &&
3964 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3965 params->cipher)))
3966 goto nla_put_failure;
3967
3968 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3969 if (!key)
3970 goto nla_put_failure;
3971
3972 if ((params->key &&
3973 nla_put(cookie->msg, NL80211_KEY_DATA,
3974 params->key_len, params->key)) ||
3975 (params->seq &&
3976 nla_put(cookie->msg, NL80211_KEY_SEQ,
3977 params->seq_len, params->seq)) ||
3978 (params->cipher &&
3979 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3980 params->cipher)))
3981 goto nla_put_failure;
3982
3983 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3984 goto nla_put_failure;
3985
3986 nla_nest_end(cookie->msg, key);
3987
3988 return;
3989 nla_put_failure:
3990 cookie->error = 1;
3991 }
3992
nl80211_get_key(struct sk_buff * skb,struct genl_info * info)3993 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3994 {
3995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3996 int err;
3997 struct net_device *dev = info->user_ptr[1];
3998 u8 key_idx = 0;
3999 const u8 *mac_addr = NULL;
4000 bool pairwise;
4001 struct get_key_cookie cookie = {
4002 .error = 0,
4003 };
4004 void *hdr;
4005 struct sk_buff *msg;
4006 bool bigtk_support = false;
4007
4008 if (wiphy_ext_feature_isset(&rdev->wiphy,
4009 NL80211_EXT_FEATURE_BEACON_PROTECTION))
4010 bigtk_support = true;
4011
4012 if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4013 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4014 wiphy_ext_feature_isset(&rdev->wiphy,
4015 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4016 bigtk_support = true;
4017
4018 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4019 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4020
4021 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4022 GENL_SET_ERR_MSG(info, "BIGTK not supported");
4023 return -EINVAL;
4024 }
4025 }
4026
4027 if (info->attrs[NL80211_ATTR_MAC])
4028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4029
4030 pairwise = !!mac_addr;
4031 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4032 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4033
4034 if (kt != NL80211_KEYTYPE_GROUP &&
4035 kt != NL80211_KEYTYPE_PAIRWISE)
4036 return -EINVAL;
4037 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4038 }
4039
4040 if (!rdev->ops->get_key)
4041 return -EOPNOTSUPP;
4042
4043 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4044 return -ENOENT;
4045
4046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4047 if (!msg)
4048 return -ENOMEM;
4049
4050 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4051 NL80211_CMD_NEW_KEY);
4052 if (!hdr)
4053 goto nla_put_failure;
4054
4055 cookie.msg = msg;
4056 cookie.idx = key_idx;
4057
4058 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4059 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4060 goto nla_put_failure;
4061 if (mac_addr &&
4062 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4063 goto nla_put_failure;
4064
4065 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4066 get_key_callback);
4067
4068 if (err)
4069 goto free_msg;
4070
4071 if (cookie.error)
4072 goto nla_put_failure;
4073
4074 genlmsg_end(msg, hdr);
4075 return genlmsg_reply(msg, info);
4076
4077 nla_put_failure:
4078 err = -ENOBUFS;
4079 free_msg:
4080 nlmsg_free(msg);
4081 return err;
4082 }
4083
nl80211_set_key(struct sk_buff * skb,struct genl_info * info)4084 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4085 {
4086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4087 struct key_parse key;
4088 int err;
4089 struct net_device *dev = info->user_ptr[1];
4090
4091 err = nl80211_parse_key(info, &key);
4092 if (err)
4093 return err;
4094
4095 if (key.idx < 0)
4096 return -EINVAL;
4097
4098 /* Only support setting default key and
4099 * Extended Key ID action NL80211_KEY_SET_TX.
4100 */
4101 if (!key.def && !key.defmgmt && !key.defbeacon &&
4102 !(key.p.mode == NL80211_KEY_SET_TX))
4103 return -EINVAL;
4104
4105 wdev_lock(dev->ieee80211_ptr);
4106
4107 if (key.def) {
4108 if (!rdev->ops->set_default_key) {
4109 err = -EOPNOTSUPP;
4110 goto out;
4111 }
4112
4113 err = nl80211_key_allowed(dev->ieee80211_ptr);
4114 if (err)
4115 goto out;
4116
4117 err = rdev_set_default_key(rdev, dev, key.idx,
4118 key.def_uni, key.def_multi);
4119
4120 if (err)
4121 goto out;
4122
4123 #ifdef CONFIG_CFG80211_WEXT
4124 dev->ieee80211_ptr->wext.default_key = key.idx;
4125 #endif
4126 } else if (key.defmgmt) {
4127 if (key.def_uni || !key.def_multi) {
4128 err = -EINVAL;
4129 goto out;
4130 }
4131
4132 if (!rdev->ops->set_default_mgmt_key) {
4133 err = -EOPNOTSUPP;
4134 goto out;
4135 }
4136
4137 err = nl80211_key_allowed(dev->ieee80211_ptr);
4138 if (err)
4139 goto out;
4140
4141 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4142 if (err)
4143 goto out;
4144
4145 #ifdef CONFIG_CFG80211_WEXT
4146 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4147 #endif
4148 } else if (key.defbeacon) {
4149 if (key.def_uni || !key.def_multi) {
4150 err = -EINVAL;
4151 goto out;
4152 }
4153
4154 if (!rdev->ops->set_default_beacon_key) {
4155 err = -EOPNOTSUPP;
4156 goto out;
4157 }
4158
4159 err = nl80211_key_allowed(dev->ieee80211_ptr);
4160 if (err)
4161 goto out;
4162
4163 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4164 if (err)
4165 goto out;
4166 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4167 wiphy_ext_feature_isset(&rdev->wiphy,
4168 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4169 u8 *mac_addr = NULL;
4170
4171 if (info->attrs[NL80211_ATTR_MAC])
4172 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4173
4174 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4175 err = -EINVAL;
4176 goto out;
4177 }
4178
4179 err = rdev_add_key(rdev, dev, key.idx,
4180 NL80211_KEYTYPE_PAIRWISE,
4181 mac_addr, &key.p);
4182 } else {
4183 err = -EINVAL;
4184 }
4185 out:
4186 wdev_unlock(dev->ieee80211_ptr);
4187
4188 return err;
4189 }
4190
nl80211_new_key(struct sk_buff * skb,struct genl_info * info)4191 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4192 {
4193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4194 int err;
4195 struct net_device *dev = info->user_ptr[1];
4196 struct key_parse key;
4197 const u8 *mac_addr = NULL;
4198
4199 err = nl80211_parse_key(info, &key);
4200 if (err)
4201 return err;
4202
4203 if (!key.p.key) {
4204 GENL_SET_ERR_MSG(info, "no key");
4205 return -EINVAL;
4206 }
4207
4208 if (info->attrs[NL80211_ATTR_MAC])
4209 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4210
4211 if (key.type == -1) {
4212 if (mac_addr)
4213 key.type = NL80211_KEYTYPE_PAIRWISE;
4214 else
4215 key.type = NL80211_KEYTYPE_GROUP;
4216 }
4217
4218 /* for now */
4219 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4220 key.type != NL80211_KEYTYPE_GROUP) {
4221 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4222 return -EINVAL;
4223 }
4224
4225 if (key.type == NL80211_KEYTYPE_GROUP &&
4226 info->attrs[NL80211_ATTR_VLAN_ID])
4227 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4228
4229 if (!rdev->ops->add_key)
4230 return -EOPNOTSUPP;
4231
4232 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4233 key.type == NL80211_KEYTYPE_PAIRWISE,
4234 mac_addr)) {
4235 GENL_SET_ERR_MSG(info, "key setting validation failed");
4236 return -EINVAL;
4237 }
4238
4239 wdev_lock(dev->ieee80211_ptr);
4240 err = nl80211_key_allowed(dev->ieee80211_ptr);
4241 if (err)
4242 GENL_SET_ERR_MSG(info, "key not allowed");
4243 if (!err) {
4244 err = rdev_add_key(rdev, dev, key.idx,
4245 key.type == NL80211_KEYTYPE_PAIRWISE,
4246 mac_addr, &key.p);
4247 if (err)
4248 GENL_SET_ERR_MSG(info, "key addition failed");
4249 }
4250 wdev_unlock(dev->ieee80211_ptr);
4251
4252 return err;
4253 }
4254
nl80211_del_key(struct sk_buff * skb,struct genl_info * info)4255 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4256 {
4257 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4258 int err;
4259 struct net_device *dev = info->user_ptr[1];
4260 u8 *mac_addr = NULL;
4261 struct key_parse key;
4262
4263 err = nl80211_parse_key(info, &key);
4264 if (err)
4265 return err;
4266
4267 if (info->attrs[NL80211_ATTR_MAC])
4268 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4269
4270 if (key.type == -1) {
4271 if (mac_addr)
4272 key.type = NL80211_KEYTYPE_PAIRWISE;
4273 else
4274 key.type = NL80211_KEYTYPE_GROUP;
4275 }
4276
4277 /* for now */
4278 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4279 key.type != NL80211_KEYTYPE_GROUP)
4280 return -EINVAL;
4281
4282 if (!cfg80211_valid_key_idx(rdev, key.idx,
4283 key.type == NL80211_KEYTYPE_PAIRWISE))
4284 return -EINVAL;
4285
4286 if (!rdev->ops->del_key)
4287 return -EOPNOTSUPP;
4288
4289 wdev_lock(dev->ieee80211_ptr);
4290 err = nl80211_key_allowed(dev->ieee80211_ptr);
4291
4292 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4293 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4294 err = -ENOENT;
4295
4296 if (!err)
4297 err = rdev_del_key(rdev, dev, key.idx,
4298 key.type == NL80211_KEYTYPE_PAIRWISE,
4299 mac_addr);
4300
4301 #ifdef CONFIG_CFG80211_WEXT
4302 if (!err) {
4303 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4304 dev->ieee80211_ptr->wext.default_key = -1;
4305 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4306 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4307 }
4308 #endif
4309 wdev_unlock(dev->ieee80211_ptr);
4310
4311 return err;
4312 }
4313
4314 /* This function returns an error or the number of nested attributes */
validate_acl_mac_addrs(struct nlattr * nl_attr)4315 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4316 {
4317 struct nlattr *attr;
4318 int n_entries = 0, tmp;
4319
4320 nla_for_each_nested(attr, nl_attr, tmp) {
4321 if (nla_len(attr) != ETH_ALEN)
4322 return -EINVAL;
4323
4324 n_entries++;
4325 }
4326
4327 return n_entries;
4328 }
4329
4330 /*
4331 * This function parses ACL information and allocates memory for ACL data.
4332 * On successful return, the calling function is responsible to free the
4333 * ACL buffer returned by this function.
4334 */
parse_acl_data(struct wiphy * wiphy,struct genl_info * info)4335 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4336 struct genl_info *info)
4337 {
4338 enum nl80211_acl_policy acl_policy;
4339 struct nlattr *attr;
4340 struct cfg80211_acl_data *acl;
4341 int i = 0, n_entries, tmp;
4342
4343 if (!wiphy->max_acl_mac_addrs)
4344 return ERR_PTR(-EOPNOTSUPP);
4345
4346 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4347 return ERR_PTR(-EINVAL);
4348
4349 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4350 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4351 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4352 return ERR_PTR(-EINVAL);
4353
4354 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4355 return ERR_PTR(-EINVAL);
4356
4357 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4358 if (n_entries < 0)
4359 return ERR_PTR(n_entries);
4360
4361 if (n_entries > wiphy->max_acl_mac_addrs)
4362 return ERR_PTR(-ENOTSUPP);
4363
4364 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4365 if (!acl)
4366 return ERR_PTR(-ENOMEM);
4367
4368 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4369 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4370 i++;
4371 }
4372
4373 acl->n_acl_entries = n_entries;
4374 acl->acl_policy = acl_policy;
4375
4376 return acl;
4377 }
4378
nl80211_set_mac_acl(struct sk_buff * skb,struct genl_info * info)4379 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4380 {
4381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4382 struct net_device *dev = info->user_ptr[1];
4383 struct cfg80211_acl_data *acl;
4384 int err;
4385
4386 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4387 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4388 return -EOPNOTSUPP;
4389
4390 if (!dev->ieee80211_ptr->beacon_interval)
4391 return -EINVAL;
4392
4393 acl = parse_acl_data(&rdev->wiphy, info);
4394 if (IS_ERR(acl))
4395 return PTR_ERR(acl);
4396
4397 err = rdev_set_mac_acl(rdev, dev, acl);
4398
4399 kfree(acl);
4400
4401 return err;
4402 }
4403
rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len)4404 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4405 u8 *rates, u8 rates_len)
4406 {
4407 u8 i;
4408 u32 mask = 0;
4409
4410 for (i = 0; i < rates_len; i++) {
4411 int rate = (rates[i] & 0x7f) * 5;
4412 int ridx;
4413
4414 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4415 struct ieee80211_rate *srate =
4416 &sband->bitrates[ridx];
4417 if (rate == srate->bitrate) {
4418 mask |= 1 << ridx;
4419 break;
4420 }
4421 }
4422 if (ridx == sband->n_bitrates)
4423 return 0; /* rate not found */
4424 }
4425
4426 return mask;
4427 }
4428
ht_rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len,u8 mcs[IEEE80211_HT_MCS_MASK_LEN])4429 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4430 u8 *rates, u8 rates_len,
4431 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4432 {
4433 u8 i;
4434
4435 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4436
4437 for (i = 0; i < rates_len; i++) {
4438 int ridx, rbit;
4439
4440 ridx = rates[i] / 8;
4441 rbit = BIT(rates[i] % 8);
4442
4443 /* check validity */
4444 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4445 return false;
4446
4447 /* check availability */
4448 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4449 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4450 mcs[ridx] |= rbit;
4451 else
4452 return false;
4453 }
4454
4455 return true;
4456 }
4457
vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)4458 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4459 {
4460 u16 mcs_mask = 0;
4461
4462 switch (vht_mcs_map) {
4463 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4464 break;
4465 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4466 mcs_mask = 0x00FF;
4467 break;
4468 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4469 mcs_mask = 0x01FF;
4470 break;
4471 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4472 mcs_mask = 0x03FF;
4473 break;
4474 default:
4475 break;
4476 }
4477
4478 return mcs_mask;
4479 }
4480
vht_build_mcs_mask(u16 vht_mcs_map,u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])4481 static void vht_build_mcs_mask(u16 vht_mcs_map,
4482 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4483 {
4484 u8 nss;
4485
4486 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4487 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4488 vht_mcs_map >>= 2;
4489 }
4490 }
4491
vht_set_mcs_mask(struct ieee80211_supported_band * sband,struct nl80211_txrate_vht * txrate,u16 mcs[NL80211_VHT_NSS_MAX])4492 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4493 struct nl80211_txrate_vht *txrate,
4494 u16 mcs[NL80211_VHT_NSS_MAX])
4495 {
4496 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4497 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4498 u8 i;
4499
4500 if (!sband->vht_cap.vht_supported)
4501 return false;
4502
4503 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4504
4505 /* Build vht_mcs_mask from VHT capabilities */
4506 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4507
4508 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4509 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4510 mcs[i] = txrate->mcs[i];
4511 else
4512 return false;
4513 }
4514
4515 return true;
4516 }
4517
he_mcs_map_to_mcs_mask(u8 he_mcs_map)4518 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4519 {
4520 switch (he_mcs_map) {
4521 case IEEE80211_HE_MCS_NOT_SUPPORTED:
4522 return 0;
4523 case IEEE80211_HE_MCS_SUPPORT_0_7:
4524 return 0x00FF;
4525 case IEEE80211_HE_MCS_SUPPORT_0_9:
4526 return 0x03FF;
4527 case IEEE80211_HE_MCS_SUPPORT_0_11:
4528 return 0xFFF;
4529 default:
4530 break;
4531 }
4532 return 0;
4533 }
4534
he_build_mcs_mask(u16 he_mcs_map,u16 he_mcs_mask[NL80211_HE_NSS_MAX])4535 static void he_build_mcs_mask(u16 he_mcs_map,
4536 u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4537 {
4538 u8 nss;
4539
4540 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4541 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4542 he_mcs_map >>= 2;
4543 }
4544 }
4545
he_get_txmcsmap(struct genl_info * info,const struct ieee80211_sta_he_cap * he_cap)4546 static u16 he_get_txmcsmap(struct genl_info *info,
4547 const struct ieee80211_sta_he_cap *he_cap)
4548 {
4549 struct net_device *dev = info->user_ptr[1];
4550 struct wireless_dev *wdev = dev->ieee80211_ptr;
4551 __le16 tx_mcs;
4552
4553 switch (wdev->chandef.width) {
4554 case NL80211_CHAN_WIDTH_80P80:
4555 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4556 break;
4557 case NL80211_CHAN_WIDTH_160:
4558 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4559 break;
4560 default:
4561 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4562 break;
4563 }
4564 return le16_to_cpu(tx_mcs);
4565 }
4566
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])4567 static bool he_set_mcs_mask(struct genl_info *info,
4568 struct wireless_dev *wdev,
4569 struct ieee80211_supported_band *sband,
4570 struct nl80211_txrate_he *txrate,
4571 u16 mcs[NL80211_HE_NSS_MAX])
4572 {
4573 const struct ieee80211_sta_he_cap *he_cap;
4574 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4575 u16 tx_mcs_map = 0;
4576 u8 i;
4577
4578 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4579 if (!he_cap)
4580 return false;
4581
4582 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4583
4584 tx_mcs_map = he_get_txmcsmap(info, he_cap);
4585
4586 /* Build he_mcs_mask from HE capabilities */
4587 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4588
4589 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4590 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4591 mcs[i] = txrate->mcs[i];
4592 else
4593 return false;
4594 }
4595
4596 return true;
4597 }
4598
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)4599 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4600 struct nlattr *attrs[],
4601 enum nl80211_attrs attr,
4602 struct cfg80211_bitrate_mask *mask,
4603 struct net_device *dev)
4604 {
4605 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4606 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4607 struct wireless_dev *wdev = dev->ieee80211_ptr;
4608 int rem, i;
4609 struct nlattr *tx_rates;
4610 struct ieee80211_supported_band *sband;
4611 u16 vht_tx_mcs_map, he_tx_mcs_map;
4612
4613 memset(mask, 0, sizeof(*mask));
4614 /* Default to all rates enabled */
4615 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4616 const struct ieee80211_sta_he_cap *he_cap;
4617
4618 sband = rdev->wiphy.bands[i];
4619
4620 if (!sband)
4621 continue;
4622
4623 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4624 memcpy(mask->control[i].ht_mcs,
4625 sband->ht_cap.mcs.rx_mask,
4626 sizeof(mask->control[i].ht_mcs));
4627
4628 if (sband->vht_cap.vht_supported) {
4629 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4630 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4631 }
4632
4633 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4634 if (!he_cap)
4635 continue;
4636
4637 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4638 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4639
4640 mask->control[i].he_gi = 0xFF;
4641 mask->control[i].he_ltf = 0xFF;
4642 }
4643
4644 /* if no rates are given set it back to the defaults */
4645 if (!attrs[attr])
4646 goto out;
4647
4648 /* The nested attribute uses enum nl80211_band as the index. This maps
4649 * directly to the enum nl80211_band values used in cfg80211.
4650 */
4651 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4652 nla_for_each_nested(tx_rates, attrs[attr], rem) {
4653 enum nl80211_band band = nla_type(tx_rates);
4654 int err;
4655
4656 if (band < 0 || band >= NUM_NL80211_BANDS)
4657 return -EINVAL;
4658 sband = rdev->wiphy.bands[band];
4659 if (sband == NULL)
4660 return -EINVAL;
4661 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4662 tx_rates,
4663 nl80211_txattr_policy,
4664 info->extack);
4665 if (err)
4666 return err;
4667 if (tb[NL80211_TXRATE_LEGACY]) {
4668 mask->control[band].legacy = rateset_to_mask(
4669 sband,
4670 nla_data(tb[NL80211_TXRATE_LEGACY]),
4671 nla_len(tb[NL80211_TXRATE_LEGACY]));
4672 if ((mask->control[band].legacy == 0) &&
4673 nla_len(tb[NL80211_TXRATE_LEGACY]))
4674 return -EINVAL;
4675 }
4676 if (tb[NL80211_TXRATE_HT]) {
4677 if (!ht_rateset_to_mask(
4678 sband,
4679 nla_data(tb[NL80211_TXRATE_HT]),
4680 nla_len(tb[NL80211_TXRATE_HT]),
4681 mask->control[band].ht_mcs))
4682 return -EINVAL;
4683 }
4684 if (tb[NL80211_TXRATE_VHT]) {
4685 if (!vht_set_mcs_mask(
4686 sband,
4687 nla_data(tb[NL80211_TXRATE_VHT]),
4688 mask->control[band].vht_mcs))
4689 return -EINVAL;
4690 }
4691 if (tb[NL80211_TXRATE_GI]) {
4692 mask->control[band].gi =
4693 nla_get_u8(tb[NL80211_TXRATE_GI]);
4694 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4695 return -EINVAL;
4696 }
4697 if (tb[NL80211_TXRATE_HE] &&
4698 !he_set_mcs_mask(info, wdev, sband,
4699 nla_data(tb[NL80211_TXRATE_HE]),
4700 mask->control[band].he_mcs))
4701 return -EINVAL;
4702 if (tb[NL80211_TXRATE_HE_GI])
4703 mask->control[band].he_gi =
4704 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4705 if (tb[NL80211_TXRATE_HE_LTF])
4706 mask->control[band].he_ltf =
4707 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4708
4709 if (mask->control[band].legacy == 0) {
4710 /* don't allow empty legacy rates if HT, VHT or HE
4711 * are not even supported.
4712 */
4713 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4714 rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4715 ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4716 return -EINVAL;
4717
4718 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4719 if (mask->control[band].ht_mcs[i])
4720 goto out;
4721
4722 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4723 if (mask->control[band].vht_mcs[i])
4724 goto out;
4725
4726 for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4727 if (mask->control[band].he_mcs[i])
4728 goto out;
4729
4730 /* legacy and mcs rates may not be both empty */
4731 return -EINVAL;
4732 }
4733 }
4734
4735 out:
4736 return 0;
4737 }
4738
validate_beacon_tx_rate(struct cfg80211_registered_device * rdev,enum nl80211_band band,struct cfg80211_bitrate_mask * beacon_rate)4739 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4740 enum nl80211_band band,
4741 struct cfg80211_bitrate_mask *beacon_rate)
4742 {
4743 u32 count_ht, count_vht, i;
4744 u32 rate = beacon_rate->control[band].legacy;
4745
4746 /* Allow only one rate */
4747 if (hweight32(rate) > 1)
4748 return -EINVAL;
4749
4750 count_ht = 0;
4751 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4752 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4753 return -EINVAL;
4754 } else if (beacon_rate->control[band].ht_mcs[i]) {
4755 count_ht++;
4756 if (count_ht > 1)
4757 return -EINVAL;
4758 }
4759 if (count_ht && rate)
4760 return -EINVAL;
4761 }
4762
4763 count_vht = 0;
4764 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4765 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4766 return -EINVAL;
4767 } else if (beacon_rate->control[band].vht_mcs[i]) {
4768 count_vht++;
4769 if (count_vht > 1)
4770 return -EINVAL;
4771 }
4772 if (count_vht && rate)
4773 return -EINVAL;
4774 }
4775
4776 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4777 return -EINVAL;
4778
4779 if (rate &&
4780 !wiphy_ext_feature_isset(&rdev->wiphy,
4781 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4782 return -EINVAL;
4783 if (count_ht &&
4784 !wiphy_ext_feature_isset(&rdev->wiphy,
4785 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4786 return -EINVAL;
4787 if (count_vht &&
4788 !wiphy_ext_feature_isset(&rdev->wiphy,
4789 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4790 return -EINVAL;
4791
4792 return 0;
4793 }
4794
nl80211_parse_beacon(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct cfg80211_beacon_data * bcn)4795 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4796 struct nlattr *attrs[],
4797 struct cfg80211_beacon_data *bcn)
4798 {
4799 bool haveinfo = false;
4800 int err;
4801
4802 memset(bcn, 0, sizeof(*bcn));
4803
4804 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4805 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4806 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4807 if (!bcn->head_len)
4808 return -EINVAL;
4809 haveinfo = true;
4810 }
4811
4812 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4813 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4814 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4815 haveinfo = true;
4816 }
4817
4818 if (!haveinfo)
4819 return -EINVAL;
4820
4821 if (attrs[NL80211_ATTR_IE]) {
4822 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4823 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4824 }
4825
4826 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4827 bcn->proberesp_ies =
4828 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4829 bcn->proberesp_ies_len =
4830 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4831 }
4832
4833 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4834 bcn->assocresp_ies =
4835 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4836 bcn->assocresp_ies_len =
4837 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4838 }
4839
4840 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4841 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4842 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4843 }
4844
4845 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4846 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4847
4848 err = nla_parse_nested_deprecated(tb,
4849 NL80211_FTM_RESP_ATTR_MAX,
4850 attrs[NL80211_ATTR_FTM_RESPONDER],
4851 NULL, NULL);
4852 if (err)
4853 return err;
4854
4855 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4856 wiphy_ext_feature_isset(&rdev->wiphy,
4857 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4858 bcn->ftm_responder = 1;
4859 else
4860 return -EOPNOTSUPP;
4861
4862 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4863 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4864 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4865 }
4866
4867 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4868 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4869 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4870 }
4871 } else {
4872 bcn->ftm_responder = -1;
4873 }
4874
4875 return 0;
4876 }
4877
nl80211_parse_he_obss_pd(struct nlattr * attrs,struct ieee80211_he_obss_pd * he_obss_pd)4878 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4879 struct ieee80211_he_obss_pd *he_obss_pd)
4880 {
4881 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4882 int err;
4883
4884 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4885 he_obss_pd_policy, NULL);
4886 if (err)
4887 return err;
4888
4889 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4890 return -EINVAL;
4891
4892 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4893
4894 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4895 he_obss_pd->min_offset =
4896 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4897 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4898 he_obss_pd->max_offset =
4899 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4900 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4901 he_obss_pd->non_srg_max_offset =
4902 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4903
4904 if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4905 return -EINVAL;
4906
4907 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4908 memcpy(he_obss_pd->bss_color_bitmap,
4909 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4910 sizeof(he_obss_pd->bss_color_bitmap));
4911
4912 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4913 memcpy(he_obss_pd->partial_bssid_bitmap,
4914 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4915 sizeof(he_obss_pd->partial_bssid_bitmap));
4916
4917 he_obss_pd->enable = true;
4918
4919 return 0;
4920 }
4921
nl80211_parse_he_bss_color(struct nlattr * attrs,struct cfg80211_he_bss_color * he_bss_color)4922 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4923 struct cfg80211_he_bss_color *he_bss_color)
4924 {
4925 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4926 int err;
4927
4928 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4929 he_bss_color_policy, NULL);
4930 if (err)
4931 return err;
4932
4933 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4934 return -EINVAL;
4935
4936 he_bss_color->color =
4937 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4938 he_bss_color->enabled =
4939 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4940 he_bss_color->partial =
4941 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4942
4943 return 0;
4944 }
4945
nl80211_parse_fils_discovery(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)4946 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
4947 struct nlattr *attrs,
4948 struct cfg80211_ap_settings *params)
4949 {
4950 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
4951 int ret;
4952 struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery;
4953
4954 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4955 NL80211_EXT_FEATURE_FILS_DISCOVERY))
4956 return -EINVAL;
4957
4958 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
4959 NULL, NULL);
4960 if (ret)
4961 return ret;
4962
4963 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
4964 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
4965 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
4966 return -EINVAL;
4967
4968 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4969 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4970 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
4971 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
4972
4973 return 0;
4974 }
4975
4976 static int
nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)4977 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
4978 struct nlattr *attrs,
4979 struct cfg80211_ap_settings *params)
4980 {
4981 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
4982 int ret;
4983 struct cfg80211_unsol_bcast_probe_resp *presp =
4984 ¶ms->unsol_bcast_probe_resp;
4985
4986 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4987 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
4988 return -EINVAL;
4989
4990 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
4991 attrs, NULL, NULL);
4992 if (ret)
4993 return ret;
4994
4995 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
4996 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
4997 return -EINVAL;
4998
4999 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5000 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5001 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5002 return 0;
5003 }
5004
nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings * params,const u8 * rates)5005 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5006 const u8 *rates)
5007 {
5008 int i;
5009
5010 if (!rates)
5011 return;
5012
5013 for (i = 0; i < rates[1]; i++) {
5014 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5015 params->ht_required = true;
5016 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5017 params->vht_required = true;
5018 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5019 params->he_required = true;
5020 }
5021 }
5022
5023 /*
5024 * Since the nl80211 API didn't include, from the beginning, attributes about
5025 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5026 * benefit of drivers that rebuild IEs in the firmware.
5027 */
nl80211_calculate_ap_params(struct cfg80211_ap_settings * params)5028 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5029 {
5030 const struct cfg80211_beacon_data *bcn = ¶ms->beacon;
5031 size_t ies_len = bcn->tail_len;
5032 const u8 *ies = bcn->tail;
5033 const u8 *rates;
5034 const u8 *cap;
5035
5036 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5037 nl80211_check_ap_rate_selectors(params, rates);
5038
5039 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5040 nl80211_check_ap_rate_selectors(params, rates);
5041
5042 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5043 if (cap && cap[1] >= sizeof(*params->ht_cap))
5044 params->ht_cap = (void *)(cap + 2);
5045 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5046 if (cap && cap[1] >= sizeof(*params->vht_cap))
5047 params->vht_cap = (void *)(cap + 2);
5048 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5049 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5050 params->he_cap = (void *)(cap + 3);
5051 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5052 if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5053 params->he_oper = (void *)(cap + 3);
5054 }
5055
nl80211_get_ap_channel(struct cfg80211_registered_device * rdev,struct cfg80211_ap_settings * params)5056 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5057 struct cfg80211_ap_settings *params)
5058 {
5059 struct wireless_dev *wdev;
5060 bool ret = false;
5061
5062 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5063 if (wdev->iftype != NL80211_IFTYPE_AP &&
5064 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5065 continue;
5066
5067 if (!wdev->preset_chandef.chan)
5068 continue;
5069
5070 params->chandef = wdev->preset_chandef;
5071 ret = true;
5072 break;
5073 }
5074
5075 return ret;
5076 }
5077
nl80211_valid_auth_type(struct cfg80211_registered_device * rdev,enum nl80211_auth_type auth_type,enum nl80211_commands cmd)5078 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5079 enum nl80211_auth_type auth_type,
5080 enum nl80211_commands cmd)
5081 {
5082 if (auth_type > NL80211_AUTHTYPE_MAX)
5083 return false;
5084
5085 switch (cmd) {
5086 case NL80211_CMD_AUTHENTICATE:
5087 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5088 auth_type == NL80211_AUTHTYPE_SAE)
5089 return false;
5090 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5091 NL80211_EXT_FEATURE_FILS_STA) &&
5092 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5093 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5094 auth_type == NL80211_AUTHTYPE_FILS_PK))
5095 return false;
5096 return true;
5097 case NL80211_CMD_CONNECT:
5098 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5099 !wiphy_ext_feature_isset(&rdev->wiphy,
5100 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5101 auth_type == NL80211_AUTHTYPE_SAE)
5102 return false;
5103
5104 /* FILS with SK PFS or PK not supported yet */
5105 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5106 auth_type == NL80211_AUTHTYPE_FILS_PK)
5107 return false;
5108 if (!wiphy_ext_feature_isset(
5109 &rdev->wiphy,
5110 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5111 auth_type == NL80211_AUTHTYPE_FILS_SK)
5112 return false;
5113 return true;
5114 case NL80211_CMD_START_AP:
5115 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5116 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5117 auth_type == NL80211_AUTHTYPE_SAE)
5118 return false;
5119 /* FILS not supported yet */
5120 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5121 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5122 auth_type == NL80211_AUTHTYPE_FILS_PK)
5123 return false;
5124 return true;
5125 default:
5126 return false;
5127 }
5128 }
5129
nl80211_start_ap(struct sk_buff * skb,struct genl_info * info)5130 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5131 {
5132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5133 struct net_device *dev = info->user_ptr[1];
5134 struct wireless_dev *wdev = dev->ieee80211_ptr;
5135 struct cfg80211_ap_settings params;
5136 int err;
5137
5138 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5139 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5140 return -EOPNOTSUPP;
5141
5142 if (!rdev->ops->start_ap)
5143 return -EOPNOTSUPP;
5144
5145 if (wdev->beacon_interval)
5146 return -EALREADY;
5147
5148 memset(¶ms, 0, sizeof(params));
5149
5150 /* these are required for START_AP */
5151 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5152 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5153 !info->attrs[NL80211_ATTR_BEACON_HEAD])
5154 return -EINVAL;
5155
5156 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon);
5157 if (err)
5158 return err;
5159
5160 params.beacon_interval =
5161 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5162 params.dtim_period =
5163 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5164
5165 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5166 params.beacon_interval);
5167 if (err)
5168 return err;
5169
5170 /*
5171 * In theory, some of these attributes should be required here
5172 * but since they were not used when the command was originally
5173 * added, keep them optional for old user space programs to let
5174 * them continue to work with drivers that do not need the
5175 * additional information -- drivers must check!
5176 */
5177 if (info->attrs[NL80211_ATTR_SSID]) {
5178 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5179 params.ssid_len =
5180 nla_len(info->attrs[NL80211_ATTR_SSID]);
5181 if (params.ssid_len == 0)
5182 return -EINVAL;
5183 }
5184
5185 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5186 params.hidden_ssid = nla_get_u32(
5187 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5188
5189 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5190
5191 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5192 params.auth_type = nla_get_u32(
5193 info->attrs[NL80211_ATTR_AUTH_TYPE]);
5194 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5195 NL80211_CMD_START_AP))
5196 return -EINVAL;
5197 } else
5198 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5199
5200 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto,
5201 NL80211_MAX_NR_CIPHER_SUITES);
5202 if (err)
5203 return err;
5204
5205 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5206 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5207 return -EOPNOTSUPP;
5208 params.inactivity_timeout = nla_get_u16(
5209 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5210 }
5211
5212 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5213 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5214 return -EINVAL;
5215 params.p2p_ctwindow =
5216 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5217 if (params.p2p_ctwindow != 0 &&
5218 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5219 return -EINVAL;
5220 }
5221
5222 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5223 u8 tmp;
5224
5225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5226 return -EINVAL;
5227 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5228 params.p2p_opp_ps = tmp;
5229 if (params.p2p_opp_ps != 0 &&
5230 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5231 return -EINVAL;
5232 }
5233
5234 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5235 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
5236 if (err)
5237 return err;
5238 } else if (wdev->preset_chandef.chan) {
5239 params.chandef = wdev->preset_chandef;
5240 } else if (!nl80211_get_ap_channel(rdev, ¶ms))
5241 return -EINVAL;
5242
5243 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
5244 wdev->iftype))
5245 return -EINVAL;
5246
5247 if (info->attrs[NL80211_ATTR_TX_RATES]) {
5248 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5249 NL80211_ATTR_TX_RATES,
5250 ¶ms.beacon_rate,
5251 dev);
5252 if (err)
5253 return err;
5254
5255 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5256 ¶ms.beacon_rate);
5257 if (err)
5258 return err;
5259 }
5260
5261 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5262 params.smps_mode =
5263 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5264 switch (params.smps_mode) {
5265 case NL80211_SMPS_OFF:
5266 break;
5267 case NL80211_SMPS_STATIC:
5268 if (!(rdev->wiphy.features &
5269 NL80211_FEATURE_STATIC_SMPS))
5270 return -EINVAL;
5271 break;
5272 case NL80211_SMPS_DYNAMIC:
5273 if (!(rdev->wiphy.features &
5274 NL80211_FEATURE_DYNAMIC_SMPS))
5275 return -EINVAL;
5276 break;
5277 default:
5278 return -EINVAL;
5279 }
5280 } else {
5281 params.smps_mode = NL80211_SMPS_OFF;
5282 }
5283
5284 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5285 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5286 return -EOPNOTSUPP;
5287
5288 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5289 params.acl = parse_acl_data(&rdev->wiphy, info);
5290 if (IS_ERR(params.acl))
5291 return PTR_ERR(params.acl);
5292 }
5293
5294 params.twt_responder =
5295 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5296
5297 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5298 err = nl80211_parse_he_obss_pd(
5299 info->attrs[NL80211_ATTR_HE_OBSS_PD],
5300 ¶ms.he_obss_pd);
5301 if (err)
5302 goto out;
5303 }
5304
5305 if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5306 err = nl80211_parse_he_bss_color(
5307 info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5308 ¶ms.he_bss_color);
5309 if (err)
5310 goto out;
5311 }
5312
5313 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5314 err = nl80211_parse_fils_discovery(rdev,
5315 info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5316 ¶ms);
5317 if (err)
5318 goto out;
5319 }
5320
5321 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5322 err = nl80211_parse_unsol_bcast_probe_resp(
5323 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5324 ¶ms);
5325 if (err)
5326 goto out;
5327 }
5328
5329 nl80211_calculate_ap_params(¶ms);
5330
5331 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5332 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5333
5334 wdev_lock(wdev);
5335 err = rdev_start_ap(rdev, dev, ¶ms);
5336 if (!err) {
5337 wdev->preset_chandef = params.chandef;
5338 wdev->beacon_interval = params.beacon_interval;
5339 wdev->chandef = params.chandef;
5340 wdev->ssid_len = params.ssid_len;
5341 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5342
5343 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5344 wdev->conn_owner_nlportid = info->snd_portid;
5345 }
5346 wdev_unlock(wdev);
5347
5348 out:
5349 kfree(params.acl);
5350
5351 return err;
5352 }
5353
nl80211_set_beacon(struct sk_buff * skb,struct genl_info * info)5354 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5355 {
5356 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5357 struct net_device *dev = info->user_ptr[1];
5358 struct wireless_dev *wdev = dev->ieee80211_ptr;
5359 struct cfg80211_beacon_data params;
5360 int err;
5361
5362 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5363 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5364 return -EOPNOTSUPP;
5365
5366 if (!rdev->ops->change_beacon)
5367 return -EOPNOTSUPP;
5368
5369 if (!wdev->beacon_interval)
5370 return -EINVAL;
5371
5372 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms);
5373 if (err)
5374 return err;
5375
5376 wdev_lock(wdev);
5377 err = rdev_change_beacon(rdev, dev, ¶ms);
5378 wdev_unlock(wdev);
5379
5380 return err;
5381 }
5382
nl80211_stop_ap(struct sk_buff * skb,struct genl_info * info)5383 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5384 {
5385 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5386 struct net_device *dev = info->user_ptr[1];
5387
5388 return cfg80211_stop_ap(rdev, dev, false);
5389 }
5390
5391 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5392 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5393 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5394 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5395 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5396 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5397 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5398 };
5399
parse_station_flags(struct genl_info * info,enum nl80211_iftype iftype,struct station_parameters * params)5400 static int parse_station_flags(struct genl_info *info,
5401 enum nl80211_iftype iftype,
5402 struct station_parameters *params)
5403 {
5404 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5405 struct nlattr *nla;
5406 int flag;
5407
5408 /*
5409 * Try parsing the new attribute first so userspace
5410 * can specify both for older kernels.
5411 */
5412 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5413 if (nla) {
5414 struct nl80211_sta_flag_update *sta_flags;
5415
5416 sta_flags = nla_data(nla);
5417 params->sta_flags_mask = sta_flags->mask;
5418 params->sta_flags_set = sta_flags->set;
5419 params->sta_flags_set &= params->sta_flags_mask;
5420 if ((params->sta_flags_mask |
5421 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5422 return -EINVAL;
5423 return 0;
5424 }
5425
5426 /* if present, parse the old attribute */
5427
5428 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5429 if (!nla)
5430 return 0;
5431
5432 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5433 return -EINVAL;
5434
5435 /*
5436 * Only allow certain flags for interface types so that
5437 * other attributes are silently ignored. Remember that
5438 * this is backward compatibility code with old userspace
5439 * and shouldn't be hit in other cases anyway.
5440 */
5441 switch (iftype) {
5442 case NL80211_IFTYPE_AP:
5443 case NL80211_IFTYPE_AP_VLAN:
5444 case NL80211_IFTYPE_P2P_GO:
5445 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5446 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5447 BIT(NL80211_STA_FLAG_WME) |
5448 BIT(NL80211_STA_FLAG_MFP);
5449 break;
5450 case NL80211_IFTYPE_P2P_CLIENT:
5451 case NL80211_IFTYPE_STATION:
5452 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5453 BIT(NL80211_STA_FLAG_TDLS_PEER);
5454 break;
5455 case NL80211_IFTYPE_MESH_POINT:
5456 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5457 BIT(NL80211_STA_FLAG_MFP) |
5458 BIT(NL80211_STA_FLAG_AUTHORIZED);
5459 break;
5460 default:
5461 return -EINVAL;
5462 }
5463
5464 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5465 if (flags[flag]) {
5466 params->sta_flags_set |= (1<<flag);
5467
5468 /* no longer support new API additions in old API */
5469 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5470 return -EINVAL;
5471 }
5472 }
5473
5474 return 0;
5475 }
5476
nl80211_put_sta_rate(struct sk_buff * msg,struct rate_info * info,int attr)5477 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5478 {
5479 struct nlattr *rate;
5480 u32 bitrate;
5481 u16 bitrate_compat;
5482 enum nl80211_rate_info rate_flg;
5483
5484 rate = nla_nest_start_noflag(msg, attr);
5485 if (!rate)
5486 return false;
5487
5488 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5489 bitrate = cfg80211_calculate_bitrate(info);
5490 /* report 16-bit bitrate only if we can */
5491 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5492 if (bitrate > 0 &&
5493 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5494 return false;
5495 if (bitrate_compat > 0 &&
5496 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5497 return false;
5498
5499 switch (info->bw) {
5500 case RATE_INFO_BW_5:
5501 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5502 break;
5503 case RATE_INFO_BW_10:
5504 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5505 break;
5506 default:
5507 WARN_ON(1);
5508 fallthrough;
5509 case RATE_INFO_BW_20:
5510 rate_flg = 0;
5511 break;
5512 case RATE_INFO_BW_40:
5513 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5514 break;
5515 case RATE_INFO_BW_80:
5516 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5517 break;
5518 case RATE_INFO_BW_160:
5519 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5520 break;
5521 case RATE_INFO_BW_HE_RU:
5522 rate_flg = 0;
5523 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5524 }
5525
5526 if (rate_flg && nla_put_flag(msg, rate_flg))
5527 return false;
5528
5529 if (info->flags & RATE_INFO_FLAGS_MCS) {
5530 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5531 return false;
5532 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5533 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5534 return false;
5535 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5536 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5537 return false;
5538 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5539 return false;
5540 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5541 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5542 return false;
5543 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5544 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5545 return false;
5546 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5547 return false;
5548 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5549 return false;
5550 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5551 return false;
5552 if (info->bw == RATE_INFO_BW_HE_RU &&
5553 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5554 info->he_ru_alloc))
5555 return false;
5556 }
5557
5558 nla_nest_end(msg, rate);
5559 return true;
5560 }
5561
nl80211_put_signal(struct sk_buff * msg,u8 mask,s8 * signal,int id)5562 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5563 int id)
5564 {
5565 void *attr;
5566 int i = 0;
5567
5568 if (!mask)
5569 return true;
5570
5571 attr = nla_nest_start_noflag(msg, id);
5572 if (!attr)
5573 return false;
5574
5575 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5576 if (!(mask & BIT(i)))
5577 continue;
5578
5579 if (nla_put_u8(msg, i, signal[i]))
5580 return false;
5581 }
5582
5583 nla_nest_end(msg, attr);
5584
5585 return true;
5586 }
5587
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)5588 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5589 u32 seq, int flags,
5590 struct cfg80211_registered_device *rdev,
5591 struct net_device *dev,
5592 const u8 *mac_addr, struct station_info *sinfo)
5593 {
5594 void *hdr;
5595 struct nlattr *sinfoattr, *bss_param;
5596
5597 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5598 if (!hdr) {
5599 cfg80211_sinfo_release_content(sinfo);
5600 return -1;
5601 }
5602
5603 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5604 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5605 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5606 goto nla_put_failure;
5607
5608 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5609 if (!sinfoattr)
5610 goto nla_put_failure;
5611
5612 #define PUT_SINFO(attr, memb, type) do { \
5613 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
5614 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5615 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
5616 sinfo->memb)) \
5617 goto nla_put_failure; \
5618 } while (0)
5619 #define PUT_SINFO_U64(attr, memb) do { \
5620 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5621 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
5622 sinfo->memb, NL80211_STA_INFO_PAD)) \
5623 goto nla_put_failure; \
5624 } while (0)
5625
5626 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5627 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5628 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5629
5630 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5631 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5632 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5633 (u32)sinfo->rx_bytes))
5634 goto nla_put_failure;
5635
5636 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5637 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5638 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5639 (u32)sinfo->tx_bytes))
5640 goto nla_put_failure;
5641
5642 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5643 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5644 PUT_SINFO(LLID, llid, u16);
5645 PUT_SINFO(PLID, plid, u16);
5646 PUT_SINFO(PLINK_STATE, plink_state, u8);
5647 PUT_SINFO_U64(RX_DURATION, rx_duration);
5648 PUT_SINFO_U64(TX_DURATION, tx_duration);
5649
5650 if (wiphy_ext_feature_isset(&rdev->wiphy,
5651 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5652 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5653
5654 switch (rdev->wiphy.signal_type) {
5655 case CFG80211_SIGNAL_TYPE_MBM:
5656 PUT_SINFO(SIGNAL, signal, u8);
5657 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5658 break;
5659 default:
5660 break;
5661 }
5662 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5663 if (!nl80211_put_signal(msg, sinfo->chains,
5664 sinfo->chain_signal,
5665 NL80211_STA_INFO_CHAIN_SIGNAL))
5666 goto nla_put_failure;
5667 }
5668 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5669 if (!nl80211_put_signal(msg, sinfo->chains,
5670 sinfo->chain_signal_avg,
5671 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5672 goto nla_put_failure;
5673 }
5674 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5675 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5676 NL80211_STA_INFO_TX_BITRATE))
5677 goto nla_put_failure;
5678 }
5679 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5680 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5681 NL80211_STA_INFO_RX_BITRATE))
5682 goto nla_put_failure;
5683 }
5684
5685 PUT_SINFO(RX_PACKETS, rx_packets, u32);
5686 PUT_SINFO(TX_PACKETS, tx_packets, u32);
5687 PUT_SINFO(TX_RETRIES, tx_retries, u32);
5688 PUT_SINFO(TX_FAILED, tx_failed, u32);
5689 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5690 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5691 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5692 PUT_SINFO(LOCAL_PM, local_pm, u32);
5693 PUT_SINFO(PEER_PM, peer_pm, u32);
5694 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5695 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5696 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5697
5698 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5699 bss_param = nla_nest_start_noflag(msg,
5700 NL80211_STA_INFO_BSS_PARAM);
5701 if (!bss_param)
5702 goto nla_put_failure;
5703
5704 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5705 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5706 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5707 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5708 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5709 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5710 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5711 sinfo->bss_param.dtim_period) ||
5712 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5713 sinfo->bss_param.beacon_interval))
5714 goto nla_put_failure;
5715
5716 nla_nest_end(msg, bss_param);
5717 }
5718 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5719 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5720 sizeof(struct nl80211_sta_flag_update),
5721 &sinfo->sta_flags))
5722 goto nla_put_failure;
5723
5724 PUT_SINFO_U64(T_OFFSET, t_offset);
5725 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5726 PUT_SINFO_U64(BEACON_RX, rx_beacon);
5727 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5728 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5729 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5730 if (wiphy_ext_feature_isset(&rdev->wiphy,
5731 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5732 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5733 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5734 }
5735
5736 #undef PUT_SINFO
5737 #undef PUT_SINFO_U64
5738
5739 if (sinfo->pertid) {
5740 struct nlattr *tidsattr;
5741 int tid;
5742
5743 tidsattr = nla_nest_start_noflag(msg,
5744 NL80211_STA_INFO_TID_STATS);
5745 if (!tidsattr)
5746 goto nla_put_failure;
5747
5748 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5749 struct cfg80211_tid_stats *tidstats;
5750 struct nlattr *tidattr;
5751
5752 tidstats = &sinfo->pertid[tid];
5753
5754 if (!tidstats->filled)
5755 continue;
5756
5757 tidattr = nla_nest_start_noflag(msg, tid + 1);
5758 if (!tidattr)
5759 goto nla_put_failure;
5760
5761 #define PUT_TIDVAL_U64(attr, memb) do { \
5762 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
5763 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
5764 tidstats->memb, NL80211_TID_STATS_PAD)) \
5765 goto nla_put_failure; \
5766 } while (0)
5767
5768 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5769 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5770 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5771 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5772
5773 #undef PUT_TIDVAL_U64
5774 if ((tidstats->filled &
5775 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5776 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5777 NL80211_TID_STATS_TXQ_STATS))
5778 goto nla_put_failure;
5779
5780 nla_nest_end(msg, tidattr);
5781 }
5782
5783 nla_nest_end(msg, tidsattr);
5784 }
5785
5786 nla_nest_end(msg, sinfoattr);
5787
5788 if (sinfo->assoc_req_ies_len &&
5789 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5790 sinfo->assoc_req_ies))
5791 goto nla_put_failure;
5792
5793 cfg80211_sinfo_release_content(sinfo);
5794 genlmsg_end(msg, hdr);
5795 return 0;
5796
5797 nla_put_failure:
5798 cfg80211_sinfo_release_content(sinfo);
5799 genlmsg_cancel(msg, hdr);
5800 return -EMSGSIZE;
5801 }
5802
nl80211_dump_station(struct sk_buff * skb,struct netlink_callback * cb)5803 static int nl80211_dump_station(struct sk_buff *skb,
5804 struct netlink_callback *cb)
5805 {
5806 struct station_info sinfo;
5807 struct cfg80211_registered_device *rdev;
5808 struct wireless_dev *wdev;
5809 u8 mac_addr[ETH_ALEN];
5810 int sta_idx = cb->args[2];
5811 int err;
5812
5813 rtnl_lock();
5814 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5815 if (err)
5816 goto out_err;
5817
5818 if (!wdev->netdev) {
5819 err = -EINVAL;
5820 goto out_err;
5821 }
5822
5823 if (!rdev->ops->dump_station) {
5824 err = -EOPNOTSUPP;
5825 goto out_err;
5826 }
5827
5828 while (1) {
5829 memset(&sinfo, 0, sizeof(sinfo));
5830 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5831 mac_addr, &sinfo);
5832 if (err == -ENOENT)
5833 break;
5834 if (err)
5835 goto out_err;
5836
5837 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5838 NETLINK_CB(cb->skb).portid,
5839 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5840 rdev, wdev->netdev, mac_addr,
5841 &sinfo) < 0)
5842 goto out;
5843
5844 sta_idx++;
5845 }
5846
5847 out:
5848 cb->args[2] = sta_idx;
5849 err = skb->len;
5850 out_err:
5851 rtnl_unlock();
5852
5853 return err;
5854 }
5855
nl80211_get_station(struct sk_buff * skb,struct genl_info * info)5856 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5857 {
5858 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5859 struct net_device *dev = info->user_ptr[1];
5860 struct station_info sinfo;
5861 struct sk_buff *msg;
5862 u8 *mac_addr = NULL;
5863 int err;
5864
5865 memset(&sinfo, 0, sizeof(sinfo));
5866
5867 if (!info->attrs[NL80211_ATTR_MAC])
5868 return -EINVAL;
5869
5870 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5871
5872 if (!rdev->ops->get_station)
5873 return -EOPNOTSUPP;
5874
5875 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5876 if (err)
5877 return err;
5878
5879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5880 if (!msg) {
5881 cfg80211_sinfo_release_content(&sinfo);
5882 return -ENOMEM;
5883 }
5884
5885 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5886 info->snd_portid, info->snd_seq, 0,
5887 rdev, dev, mac_addr, &sinfo) < 0) {
5888 nlmsg_free(msg);
5889 return -ENOBUFS;
5890 }
5891
5892 return genlmsg_reply(msg, info);
5893 }
5894
cfg80211_check_station_change(struct wiphy * wiphy,struct station_parameters * params,enum cfg80211_station_type statype)5895 int cfg80211_check_station_change(struct wiphy *wiphy,
5896 struct station_parameters *params,
5897 enum cfg80211_station_type statype)
5898 {
5899 if (params->listen_interval != -1 &&
5900 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5901 return -EINVAL;
5902
5903 if (params->support_p2p_ps != -1 &&
5904 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5905 return -EINVAL;
5906
5907 if (params->aid &&
5908 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5909 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5910 return -EINVAL;
5911
5912 /* When you run into this, adjust the code below for the new flag */
5913 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5914
5915 switch (statype) {
5916 case CFG80211_STA_MESH_PEER_KERNEL:
5917 case CFG80211_STA_MESH_PEER_USER:
5918 /*
5919 * No ignoring the TDLS flag here -- the userspace mesh
5920 * code doesn't have the bug of including TDLS in the
5921 * mask everywhere.
5922 */
5923 if (params->sta_flags_mask &
5924 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5925 BIT(NL80211_STA_FLAG_MFP) |
5926 BIT(NL80211_STA_FLAG_AUTHORIZED)))
5927 return -EINVAL;
5928 break;
5929 case CFG80211_STA_TDLS_PEER_SETUP:
5930 case CFG80211_STA_TDLS_PEER_ACTIVE:
5931 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5932 return -EINVAL;
5933 /* ignore since it can't change */
5934 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5935 break;
5936 default:
5937 /* disallow mesh-specific things */
5938 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5939 return -EINVAL;
5940 if (params->local_pm)
5941 return -EINVAL;
5942 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5943 return -EINVAL;
5944 }
5945
5946 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5947 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5948 /* TDLS can't be set, ... */
5949 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5950 return -EINVAL;
5951 /*
5952 * ... but don't bother the driver with it. This works around
5953 * a hostapd/wpa_supplicant issue -- it always includes the
5954 * TLDS_PEER flag in the mask even for AP mode.
5955 */
5956 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5957 }
5958
5959 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5960 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5961 /* reject other things that can't change */
5962 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5963 return -EINVAL;
5964 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5965 return -EINVAL;
5966 if (params->supported_rates)
5967 return -EINVAL;
5968 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5969 params->he_capa)
5970 return -EINVAL;
5971 }
5972
5973 if (statype != CFG80211_STA_AP_CLIENT &&
5974 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5975 if (params->vlan)
5976 return -EINVAL;
5977 }
5978
5979 switch (statype) {
5980 case CFG80211_STA_AP_MLME_CLIENT:
5981 /* Use this only for authorizing/unauthorizing a station */
5982 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5983 return -EOPNOTSUPP;
5984 break;
5985 case CFG80211_STA_AP_CLIENT:
5986 case CFG80211_STA_AP_CLIENT_UNASSOC:
5987 /* accept only the listed bits */
5988 if (params->sta_flags_mask &
5989 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5990 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5991 BIT(NL80211_STA_FLAG_ASSOCIATED) |
5992 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5993 BIT(NL80211_STA_FLAG_WME) |
5994 BIT(NL80211_STA_FLAG_MFP)))
5995 return -EINVAL;
5996
5997 /* but authenticated/associated only if driver handles it */
5998 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5999 params->sta_flags_mask &
6000 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6001 BIT(NL80211_STA_FLAG_ASSOCIATED)))
6002 return -EINVAL;
6003 break;
6004 case CFG80211_STA_IBSS:
6005 case CFG80211_STA_AP_STA:
6006 /* reject any changes other than AUTHORIZED */
6007 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6008 return -EINVAL;
6009 break;
6010 case CFG80211_STA_TDLS_PEER_SETUP:
6011 /* reject any changes other than AUTHORIZED or WME */
6012 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6013 BIT(NL80211_STA_FLAG_WME)))
6014 return -EINVAL;
6015 /* force (at least) rates when authorizing */
6016 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6017 !params->supported_rates)
6018 return -EINVAL;
6019 break;
6020 case CFG80211_STA_TDLS_PEER_ACTIVE:
6021 /* reject any changes */
6022 return -EINVAL;
6023 case CFG80211_STA_MESH_PEER_KERNEL:
6024 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6025 return -EINVAL;
6026 break;
6027 case CFG80211_STA_MESH_PEER_USER:
6028 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6029 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6030 return -EINVAL;
6031 break;
6032 }
6033
6034 /*
6035 * Older kernel versions ignored this attribute entirely, so don't
6036 * reject attempts to update it but mark it as unused instead so the
6037 * driver won't look at the data.
6038 */
6039 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6040 statype != CFG80211_STA_TDLS_PEER_SETUP)
6041 params->opmode_notif_used = false;
6042
6043 return 0;
6044 }
6045 EXPORT_SYMBOL(cfg80211_check_station_change);
6046
6047 /*
6048 * Get vlan interface making sure it is running and on the right wiphy.
6049 */
get_vlan(struct genl_info * info,struct cfg80211_registered_device * rdev)6050 static struct net_device *get_vlan(struct genl_info *info,
6051 struct cfg80211_registered_device *rdev)
6052 {
6053 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6054 struct net_device *v;
6055 int ret;
6056
6057 if (!vlanattr)
6058 return NULL;
6059
6060 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6061 if (!v)
6062 return ERR_PTR(-ENODEV);
6063
6064 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6065 ret = -EINVAL;
6066 goto error;
6067 }
6068
6069 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6070 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6071 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6072 ret = -EINVAL;
6073 goto error;
6074 }
6075
6076 if (!netif_running(v)) {
6077 ret = -ENETDOWN;
6078 goto error;
6079 }
6080
6081 return v;
6082 error:
6083 dev_put(v);
6084 return ERR_PTR(ret);
6085 }
6086
6087 static const struct nla_policy
6088 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6089 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6090 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6091 };
6092
nl80211_parse_sta_wme(struct genl_info * info,struct station_parameters * params)6093 static int nl80211_parse_sta_wme(struct genl_info *info,
6094 struct station_parameters *params)
6095 {
6096 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6097 struct nlattr *nla;
6098 int err;
6099
6100 /* parse WME attributes if present */
6101 if (!info->attrs[NL80211_ATTR_STA_WME])
6102 return 0;
6103
6104 nla = info->attrs[NL80211_ATTR_STA_WME];
6105 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6106 nl80211_sta_wme_policy,
6107 info->extack);
6108 if (err)
6109 return err;
6110
6111 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6112 params->uapsd_queues = nla_get_u8(
6113 tb[NL80211_STA_WME_UAPSD_QUEUES]);
6114 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6115 return -EINVAL;
6116
6117 if (tb[NL80211_STA_WME_MAX_SP])
6118 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6119
6120 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6121 return -EINVAL;
6122
6123 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6124
6125 return 0;
6126 }
6127
nl80211_parse_sta_channel_info(struct genl_info * info,struct station_parameters * params)6128 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6129 struct station_parameters *params)
6130 {
6131 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6132 params->supported_channels =
6133 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6134 params->supported_channels_len =
6135 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6136 /*
6137 * Need to include at least one (first channel, number of
6138 * channels) tuple for each subband (checked in policy),
6139 * and must have proper tuples for the rest of the data as well.
6140 */
6141 if (params->supported_channels_len % 2)
6142 return -EINVAL;
6143 }
6144
6145 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6146 params->supported_oper_classes =
6147 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6148 params->supported_oper_classes_len =
6149 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6150 }
6151 return 0;
6152 }
6153
nl80211_set_station_tdls(struct genl_info * info,struct station_parameters * params)6154 static int nl80211_set_station_tdls(struct genl_info *info,
6155 struct station_parameters *params)
6156 {
6157 int err;
6158 /* Dummy STA entry gets updated once the peer capabilities are known */
6159 if (info->attrs[NL80211_ATTR_PEER_AID])
6160 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6161 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6162 params->ht_capa =
6163 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6164 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6165 params->vht_capa =
6166 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6167 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6168 params->he_capa =
6169 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6170 params->he_capa_len =
6171 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6172 }
6173
6174 err = nl80211_parse_sta_channel_info(info, params);
6175 if (err)
6176 return err;
6177
6178 return nl80211_parse_sta_wme(info, params);
6179 }
6180
nl80211_parse_sta_txpower_setting(struct genl_info * info,struct station_parameters * params)6181 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6182 struct station_parameters *params)
6183 {
6184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6185 int idx;
6186
6187 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6188 if (!rdev->ops->set_tx_power ||
6189 !wiphy_ext_feature_isset(&rdev->wiphy,
6190 NL80211_EXT_FEATURE_STA_TX_PWR))
6191 return -EOPNOTSUPP;
6192
6193 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6194 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6195
6196 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6197 idx = NL80211_ATTR_STA_TX_POWER;
6198
6199 if (info->attrs[idx])
6200 params->txpwr.power =
6201 nla_get_s16(info->attrs[idx]);
6202 else
6203 return -EINVAL;
6204 }
6205 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6206 }
6207
6208 return 0;
6209 }
6210
nl80211_set_station(struct sk_buff * skb,struct genl_info * info)6211 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6212 {
6213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6214 struct net_device *dev = info->user_ptr[1];
6215 struct station_parameters params;
6216 u8 *mac_addr;
6217 int err;
6218
6219 memset(¶ms, 0, sizeof(params));
6220
6221 if (!rdev->ops->change_station)
6222 return -EOPNOTSUPP;
6223
6224 /*
6225 * AID and listen_interval properties can be set only for unassociated
6226 * station. Include these parameters here and will check them in
6227 * cfg80211_check_station_change().
6228 */
6229 if (info->attrs[NL80211_ATTR_STA_AID])
6230 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6231
6232 if (info->attrs[NL80211_ATTR_VLAN_ID])
6233 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6234
6235 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6236 params.listen_interval =
6237 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6238 else
6239 params.listen_interval = -1;
6240
6241 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6242 params.support_p2p_ps =
6243 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6244 else
6245 params.support_p2p_ps = -1;
6246
6247 if (!info->attrs[NL80211_ATTR_MAC])
6248 return -EINVAL;
6249
6250 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6251
6252 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6253 params.supported_rates =
6254 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6255 params.supported_rates_len =
6256 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6257 }
6258
6259 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6260 params.capability =
6261 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6262 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6263 }
6264
6265 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6266 params.ext_capab =
6267 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6268 params.ext_capab_len =
6269 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6270 }
6271
6272 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
6273 return -EINVAL;
6274
6275 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6276 params.plink_action =
6277 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6278
6279 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6280 params.plink_state =
6281 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6282 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6283 params.peer_aid = nla_get_u16(
6284 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6285 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6286 }
6287
6288 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6289 params.local_pm = nla_get_u32(
6290 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6291
6292 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6293 params.opmode_notif_used = true;
6294 params.opmode_notif =
6295 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6296 }
6297
6298 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6299 params.he_6ghz_capa =
6300 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6301
6302 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6303 params.airtime_weight =
6304 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6305
6306 if (params.airtime_weight &&
6307 !wiphy_ext_feature_isset(&rdev->wiphy,
6308 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6309 return -EOPNOTSUPP;
6310
6311 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
6312 if (err)
6313 return err;
6314
6315 /* Include parameters for TDLS peer (will check later) */
6316 err = nl80211_set_station_tdls(info, ¶ms);
6317 if (err)
6318 return err;
6319
6320 params.vlan = get_vlan(info, rdev);
6321 if (IS_ERR(params.vlan))
6322 return PTR_ERR(params.vlan);
6323
6324 switch (dev->ieee80211_ptr->iftype) {
6325 case NL80211_IFTYPE_AP:
6326 case NL80211_IFTYPE_AP_VLAN:
6327 case NL80211_IFTYPE_P2P_GO:
6328 case NL80211_IFTYPE_P2P_CLIENT:
6329 case NL80211_IFTYPE_STATION:
6330 case NL80211_IFTYPE_ADHOC:
6331 case NL80211_IFTYPE_MESH_POINT:
6332 break;
6333 default:
6334 err = -EOPNOTSUPP;
6335 goto out_put_vlan;
6336 }
6337
6338 /* driver will call cfg80211_check_station_change() */
6339 err = rdev_change_station(rdev, dev, mac_addr, ¶ms);
6340
6341 out_put_vlan:
6342 if (params.vlan)
6343 dev_put(params.vlan);
6344
6345 return err;
6346 }
6347
nl80211_new_station(struct sk_buff * skb,struct genl_info * info)6348 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6349 {
6350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6351 int err;
6352 struct net_device *dev = info->user_ptr[1];
6353 struct station_parameters params;
6354 u8 *mac_addr = NULL;
6355 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6356 BIT(NL80211_STA_FLAG_ASSOCIATED);
6357
6358 memset(¶ms, 0, sizeof(params));
6359
6360 if (!rdev->ops->add_station)
6361 return -EOPNOTSUPP;
6362
6363 if (!info->attrs[NL80211_ATTR_MAC])
6364 return -EINVAL;
6365
6366 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6367 return -EINVAL;
6368
6369 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6370 return -EINVAL;
6371
6372 if (!info->attrs[NL80211_ATTR_STA_AID] &&
6373 !info->attrs[NL80211_ATTR_PEER_AID])
6374 return -EINVAL;
6375
6376 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6377 params.supported_rates =
6378 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6379 params.supported_rates_len =
6380 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6381 params.listen_interval =
6382 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6383
6384 if (info->attrs[NL80211_ATTR_VLAN_ID])
6385 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6386
6387 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6388 params.support_p2p_ps =
6389 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6390 } else {
6391 /*
6392 * if not specified, assume it's supported for P2P GO interface,
6393 * and is NOT supported for AP interface
6394 */
6395 params.support_p2p_ps =
6396 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6397 }
6398
6399 if (info->attrs[NL80211_ATTR_PEER_AID])
6400 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6401 else
6402 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6403
6404 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6405 params.capability =
6406 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6407 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6408 }
6409
6410 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6411 params.ext_capab =
6412 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6413 params.ext_capab_len =
6414 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6415 }
6416
6417 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6418 params.ht_capa =
6419 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6420
6421 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6422 params.vht_capa =
6423 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6424
6425 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6426 params.he_capa =
6427 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6428 params.he_capa_len =
6429 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6430 }
6431
6432 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6433 params.he_6ghz_capa =
6434 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6435
6436 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6437 params.opmode_notif_used = true;
6438 params.opmode_notif =
6439 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6440 }
6441
6442 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6443 params.plink_action =
6444 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6445
6446 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6447 params.airtime_weight =
6448 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6449
6450 if (params.airtime_weight &&
6451 !wiphy_ext_feature_isset(&rdev->wiphy,
6452 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6453 return -EOPNOTSUPP;
6454
6455 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
6456 if (err)
6457 return err;
6458
6459 err = nl80211_parse_sta_channel_info(info, ¶ms);
6460 if (err)
6461 return err;
6462
6463 err = nl80211_parse_sta_wme(info, ¶ms);
6464 if (err)
6465 return err;
6466
6467 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
6468 return -EINVAL;
6469
6470 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6471 * as userspace might just pass through the capabilities from the IEs
6472 * directly, rather than enforcing this restriction and returning an
6473 * error in this case.
6474 */
6475 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6476 params.ht_capa = NULL;
6477 params.vht_capa = NULL;
6478
6479 /* HE requires WME */
6480 if (params.he_capa_len || params.he_6ghz_capa)
6481 return -EINVAL;
6482 }
6483
6484 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6485 if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6486 return -EINVAL;
6487
6488 /* When you run into this, adjust the code below for the new flag */
6489 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6490
6491 switch (dev->ieee80211_ptr->iftype) {
6492 case NL80211_IFTYPE_AP:
6493 case NL80211_IFTYPE_AP_VLAN:
6494 case NL80211_IFTYPE_P2P_GO:
6495 /* ignore WME attributes if iface/sta is not capable */
6496 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6497 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6498 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6499
6500 /* TDLS peers cannot be added */
6501 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6502 info->attrs[NL80211_ATTR_PEER_AID])
6503 return -EINVAL;
6504 /* but don't bother the driver with it */
6505 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6506
6507 /* allow authenticated/associated only if driver handles it */
6508 if (!(rdev->wiphy.features &
6509 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6510 params.sta_flags_mask & auth_assoc)
6511 return -EINVAL;
6512
6513 /* Older userspace, or userspace wanting to be compatible with
6514 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6515 * and assoc flags in the mask, but assumes the station will be
6516 * added as associated anyway since this was the required driver
6517 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6518 * introduced.
6519 * In order to not bother drivers with this quirk in the API
6520 * set the flags in both the mask and set for new stations in
6521 * this case.
6522 */
6523 if (!(params.sta_flags_mask & auth_assoc)) {
6524 params.sta_flags_mask |= auth_assoc;
6525 params.sta_flags_set |= auth_assoc;
6526 }
6527
6528 /* must be last in here for error handling */
6529 params.vlan = get_vlan(info, rdev);
6530 if (IS_ERR(params.vlan))
6531 return PTR_ERR(params.vlan);
6532 break;
6533 case NL80211_IFTYPE_MESH_POINT:
6534 /* ignore uAPSD data */
6535 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6536
6537 /* associated is disallowed */
6538 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6539 return -EINVAL;
6540 /* TDLS peers cannot be added */
6541 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6542 info->attrs[NL80211_ATTR_PEER_AID])
6543 return -EINVAL;
6544 break;
6545 case NL80211_IFTYPE_STATION:
6546 case NL80211_IFTYPE_P2P_CLIENT:
6547 /* ignore uAPSD data */
6548 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6549
6550 /* these are disallowed */
6551 if (params.sta_flags_mask &
6552 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6553 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6554 return -EINVAL;
6555 /* Only TDLS peers can be added */
6556 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6557 return -EINVAL;
6558 /* Can only add if TDLS ... */
6559 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6560 return -EOPNOTSUPP;
6561 /* ... with external setup is supported */
6562 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6563 return -EOPNOTSUPP;
6564 /*
6565 * Older wpa_supplicant versions always mark the TDLS peer
6566 * as authorized, but it shouldn't yet be.
6567 */
6568 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6569 break;
6570 default:
6571 return -EOPNOTSUPP;
6572 }
6573
6574 /* be aware of params.vlan when changing code here */
6575
6576 err = rdev_add_station(rdev, dev, mac_addr, ¶ms);
6577
6578 if (params.vlan)
6579 dev_put(params.vlan);
6580 return err;
6581 }
6582
nl80211_del_station(struct sk_buff * skb,struct genl_info * info)6583 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6584 {
6585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6586 struct net_device *dev = info->user_ptr[1];
6587 struct station_del_parameters params;
6588
6589 memset(¶ms, 0, sizeof(params));
6590
6591 if (info->attrs[NL80211_ATTR_MAC])
6592 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6593
6594 switch (dev->ieee80211_ptr->iftype) {
6595 case NL80211_IFTYPE_AP:
6596 case NL80211_IFTYPE_AP_VLAN:
6597 case NL80211_IFTYPE_MESH_POINT:
6598 case NL80211_IFTYPE_P2P_GO:
6599 /* always accept these */
6600 break;
6601 case NL80211_IFTYPE_ADHOC:
6602 /* conditionally accept */
6603 if (wiphy_ext_feature_isset(&rdev->wiphy,
6604 NL80211_EXT_FEATURE_DEL_IBSS_STA))
6605 break;
6606 return -EINVAL;
6607 default:
6608 return -EINVAL;
6609 }
6610
6611 if (!rdev->ops->del_station)
6612 return -EOPNOTSUPP;
6613
6614 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6615 params.subtype =
6616 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6617 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6618 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6619 return -EINVAL;
6620 } else {
6621 /* Default to Deauthentication frame */
6622 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6623 }
6624
6625 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6626 params.reason_code =
6627 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6628 if (params.reason_code == 0)
6629 return -EINVAL; /* 0 is reserved */
6630 } else {
6631 /* Default to reason code 2 */
6632 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6633 }
6634
6635 return rdev_del_station(rdev, dev, ¶ms);
6636 }
6637
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)6638 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6639 int flags, struct net_device *dev,
6640 u8 *dst, u8 *next_hop,
6641 struct mpath_info *pinfo)
6642 {
6643 void *hdr;
6644 struct nlattr *pinfoattr;
6645
6646 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6647 if (!hdr)
6648 return -1;
6649
6650 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6651 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6652 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6653 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6654 goto nla_put_failure;
6655
6656 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6657 if (!pinfoattr)
6658 goto nla_put_failure;
6659 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6660 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6661 pinfo->frame_qlen))
6662 goto nla_put_failure;
6663 if (((pinfo->filled & MPATH_INFO_SN) &&
6664 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6665 ((pinfo->filled & MPATH_INFO_METRIC) &&
6666 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6667 pinfo->metric)) ||
6668 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6669 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6670 pinfo->exptime)) ||
6671 ((pinfo->filled & MPATH_INFO_FLAGS) &&
6672 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6673 pinfo->flags)) ||
6674 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6675 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6676 pinfo->discovery_timeout)) ||
6677 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6678 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6679 pinfo->discovery_retries)) ||
6680 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6681 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6682 pinfo->hop_count)) ||
6683 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6684 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6685 pinfo->path_change_count)))
6686 goto nla_put_failure;
6687
6688 nla_nest_end(msg, pinfoattr);
6689
6690 genlmsg_end(msg, hdr);
6691 return 0;
6692
6693 nla_put_failure:
6694 genlmsg_cancel(msg, hdr);
6695 return -EMSGSIZE;
6696 }
6697
nl80211_dump_mpath(struct sk_buff * skb,struct netlink_callback * cb)6698 static int nl80211_dump_mpath(struct sk_buff *skb,
6699 struct netlink_callback *cb)
6700 {
6701 struct mpath_info pinfo;
6702 struct cfg80211_registered_device *rdev;
6703 struct wireless_dev *wdev;
6704 u8 dst[ETH_ALEN];
6705 u8 next_hop[ETH_ALEN];
6706 int path_idx = cb->args[2];
6707 int err;
6708
6709 rtnl_lock();
6710 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6711 if (err)
6712 goto out_err;
6713
6714 if (!rdev->ops->dump_mpath) {
6715 err = -EOPNOTSUPP;
6716 goto out_err;
6717 }
6718
6719 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6720 err = -EOPNOTSUPP;
6721 goto out_err;
6722 }
6723
6724 while (1) {
6725 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6726 next_hop, &pinfo);
6727 if (err == -ENOENT)
6728 break;
6729 if (err)
6730 goto out_err;
6731
6732 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6733 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6734 wdev->netdev, dst, next_hop,
6735 &pinfo) < 0)
6736 goto out;
6737
6738 path_idx++;
6739 }
6740
6741 out:
6742 cb->args[2] = path_idx;
6743 err = skb->len;
6744 out_err:
6745 rtnl_unlock();
6746 return err;
6747 }
6748
nl80211_get_mpath(struct sk_buff * skb,struct genl_info * info)6749 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6750 {
6751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6752 int err;
6753 struct net_device *dev = info->user_ptr[1];
6754 struct mpath_info pinfo;
6755 struct sk_buff *msg;
6756 u8 *dst = NULL;
6757 u8 next_hop[ETH_ALEN];
6758
6759 memset(&pinfo, 0, sizeof(pinfo));
6760
6761 if (!info->attrs[NL80211_ATTR_MAC])
6762 return -EINVAL;
6763
6764 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6765
6766 if (!rdev->ops->get_mpath)
6767 return -EOPNOTSUPP;
6768
6769 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6770 return -EOPNOTSUPP;
6771
6772 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6773 if (err)
6774 return err;
6775
6776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6777 if (!msg)
6778 return -ENOMEM;
6779
6780 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6781 dev, dst, next_hop, &pinfo) < 0) {
6782 nlmsg_free(msg);
6783 return -ENOBUFS;
6784 }
6785
6786 return genlmsg_reply(msg, info);
6787 }
6788
nl80211_set_mpath(struct sk_buff * skb,struct genl_info * info)6789 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6790 {
6791 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6792 struct net_device *dev = info->user_ptr[1];
6793 u8 *dst = NULL;
6794 u8 *next_hop = NULL;
6795
6796 if (!info->attrs[NL80211_ATTR_MAC])
6797 return -EINVAL;
6798
6799 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6800 return -EINVAL;
6801
6802 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6803 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6804
6805 if (!rdev->ops->change_mpath)
6806 return -EOPNOTSUPP;
6807
6808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6809 return -EOPNOTSUPP;
6810
6811 return rdev_change_mpath(rdev, dev, dst, next_hop);
6812 }
6813
nl80211_new_mpath(struct sk_buff * skb,struct genl_info * info)6814 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6815 {
6816 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6817 struct net_device *dev = info->user_ptr[1];
6818 u8 *dst = NULL;
6819 u8 *next_hop = NULL;
6820
6821 if (!info->attrs[NL80211_ATTR_MAC])
6822 return -EINVAL;
6823
6824 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6825 return -EINVAL;
6826
6827 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6828 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6829
6830 if (!rdev->ops->add_mpath)
6831 return -EOPNOTSUPP;
6832
6833 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6834 return -EOPNOTSUPP;
6835
6836 return rdev_add_mpath(rdev, dev, dst, next_hop);
6837 }
6838
nl80211_del_mpath(struct sk_buff * skb,struct genl_info * info)6839 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6840 {
6841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6842 struct net_device *dev = info->user_ptr[1];
6843 u8 *dst = NULL;
6844
6845 if (info->attrs[NL80211_ATTR_MAC])
6846 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6847
6848 if (!rdev->ops->del_mpath)
6849 return -EOPNOTSUPP;
6850
6851 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6852 return -EOPNOTSUPP;
6853
6854 return rdev_del_mpath(rdev, dev, dst);
6855 }
6856
nl80211_get_mpp(struct sk_buff * skb,struct genl_info * info)6857 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6858 {
6859 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6860 int err;
6861 struct net_device *dev = info->user_ptr[1];
6862 struct mpath_info pinfo;
6863 struct sk_buff *msg;
6864 u8 *dst = NULL;
6865 u8 mpp[ETH_ALEN];
6866
6867 memset(&pinfo, 0, sizeof(pinfo));
6868
6869 if (!info->attrs[NL80211_ATTR_MAC])
6870 return -EINVAL;
6871
6872 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6873
6874 if (!rdev->ops->get_mpp)
6875 return -EOPNOTSUPP;
6876
6877 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6878 return -EOPNOTSUPP;
6879
6880 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6881 if (err)
6882 return err;
6883
6884 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6885 if (!msg)
6886 return -ENOMEM;
6887
6888 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6889 dev, dst, mpp, &pinfo) < 0) {
6890 nlmsg_free(msg);
6891 return -ENOBUFS;
6892 }
6893
6894 return genlmsg_reply(msg, info);
6895 }
6896
nl80211_dump_mpp(struct sk_buff * skb,struct netlink_callback * cb)6897 static int nl80211_dump_mpp(struct sk_buff *skb,
6898 struct netlink_callback *cb)
6899 {
6900 struct mpath_info pinfo;
6901 struct cfg80211_registered_device *rdev;
6902 struct wireless_dev *wdev;
6903 u8 dst[ETH_ALEN];
6904 u8 mpp[ETH_ALEN];
6905 int path_idx = cb->args[2];
6906 int err;
6907
6908 rtnl_lock();
6909 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6910 if (err)
6911 goto out_err;
6912
6913 if (!rdev->ops->dump_mpp) {
6914 err = -EOPNOTSUPP;
6915 goto out_err;
6916 }
6917
6918 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6919 err = -EOPNOTSUPP;
6920 goto out_err;
6921 }
6922
6923 while (1) {
6924 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6925 mpp, &pinfo);
6926 if (err == -ENOENT)
6927 break;
6928 if (err)
6929 goto out_err;
6930
6931 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6932 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6933 wdev->netdev, dst, mpp,
6934 &pinfo) < 0)
6935 goto out;
6936
6937 path_idx++;
6938 }
6939
6940 out:
6941 cb->args[2] = path_idx;
6942 err = skb->len;
6943 out_err:
6944 rtnl_unlock();
6945 return err;
6946 }
6947
nl80211_set_bss(struct sk_buff * skb,struct genl_info * info)6948 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6949 {
6950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6951 struct net_device *dev = info->user_ptr[1];
6952 struct wireless_dev *wdev = dev->ieee80211_ptr;
6953 struct bss_parameters params;
6954 int err;
6955
6956 memset(¶ms, 0, sizeof(params));
6957 /* default to not changing parameters */
6958 params.use_cts_prot = -1;
6959 params.use_short_preamble = -1;
6960 params.use_short_slot_time = -1;
6961 params.ap_isolate = -1;
6962 params.ht_opmode = -1;
6963 params.p2p_ctwindow = -1;
6964 params.p2p_opp_ps = -1;
6965
6966 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6967 params.use_cts_prot =
6968 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6969 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6970 params.use_short_preamble =
6971 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6972 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6973 params.use_short_slot_time =
6974 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6975 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6976 params.basic_rates =
6977 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6978 params.basic_rates_len =
6979 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6980 }
6981 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6982 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6983 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6984 params.ht_opmode =
6985 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6986
6987 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6988 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6989 return -EINVAL;
6990 params.p2p_ctwindow =
6991 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6992 if (params.p2p_ctwindow != 0 &&
6993 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6994 return -EINVAL;
6995 }
6996
6997 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6998 u8 tmp;
6999
7000 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7001 return -EINVAL;
7002 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7003 params.p2p_opp_ps = tmp;
7004 if (params.p2p_opp_ps &&
7005 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7006 return -EINVAL;
7007 }
7008
7009 if (!rdev->ops->change_bss)
7010 return -EOPNOTSUPP;
7011
7012 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7013 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7014 return -EOPNOTSUPP;
7015
7016 wdev_lock(wdev);
7017 err = rdev_change_bss(rdev, dev, ¶ms);
7018 wdev_unlock(wdev);
7019
7020 return err;
7021 }
7022
nl80211_req_set_reg(struct sk_buff * skb,struct genl_info * info)7023 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7024 {
7025 char *data = NULL;
7026 bool is_indoor;
7027 enum nl80211_user_reg_hint_type user_reg_hint_type;
7028 u32 owner_nlportid;
7029
7030 /*
7031 * You should only get this when cfg80211 hasn't yet initialized
7032 * completely when built-in to the kernel right between the time
7033 * window between nl80211_init() and regulatory_init(), if that is
7034 * even possible.
7035 */
7036 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7037 return -EINPROGRESS;
7038
7039 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7040 user_reg_hint_type =
7041 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7042 else
7043 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7044
7045 switch (user_reg_hint_type) {
7046 case NL80211_USER_REG_HINT_USER:
7047 case NL80211_USER_REG_HINT_CELL_BASE:
7048 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7049 return -EINVAL;
7050
7051 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7052 return regulatory_hint_user(data, user_reg_hint_type);
7053 case NL80211_USER_REG_HINT_INDOOR:
7054 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7055 owner_nlportid = info->snd_portid;
7056 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7057 } else {
7058 owner_nlportid = 0;
7059 is_indoor = true;
7060 }
7061
7062 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7063 default:
7064 return -EINVAL;
7065 }
7066 }
7067
nl80211_reload_regdb(struct sk_buff * skb,struct genl_info * info)7068 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7069 {
7070 return reg_reload_regdb();
7071 }
7072
nl80211_get_mesh_config(struct sk_buff * skb,struct genl_info * info)7073 static int nl80211_get_mesh_config(struct sk_buff *skb,
7074 struct genl_info *info)
7075 {
7076 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7077 struct net_device *dev = info->user_ptr[1];
7078 struct wireless_dev *wdev = dev->ieee80211_ptr;
7079 struct mesh_config cur_params;
7080 int err = 0;
7081 void *hdr;
7082 struct nlattr *pinfoattr;
7083 struct sk_buff *msg;
7084
7085 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7086 return -EOPNOTSUPP;
7087
7088 if (!rdev->ops->get_mesh_config)
7089 return -EOPNOTSUPP;
7090
7091 wdev_lock(wdev);
7092 /* If not connected, get default parameters */
7093 if (!wdev->mesh_id_len)
7094 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7095 else
7096 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7097 wdev_unlock(wdev);
7098
7099 if (err)
7100 return err;
7101
7102 /* Draw up a netlink message to send back */
7103 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7104 if (!msg)
7105 return -ENOMEM;
7106 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7107 NL80211_CMD_GET_MESH_CONFIG);
7108 if (!hdr)
7109 goto out;
7110 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7111 if (!pinfoattr)
7112 goto nla_put_failure;
7113 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7114 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7115 cur_params.dot11MeshRetryTimeout) ||
7116 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7117 cur_params.dot11MeshConfirmTimeout) ||
7118 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7119 cur_params.dot11MeshHoldingTimeout) ||
7120 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7121 cur_params.dot11MeshMaxPeerLinks) ||
7122 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7123 cur_params.dot11MeshMaxRetries) ||
7124 nla_put_u8(msg, NL80211_MESHCONF_TTL,
7125 cur_params.dot11MeshTTL) ||
7126 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7127 cur_params.element_ttl) ||
7128 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7129 cur_params.auto_open_plinks) ||
7130 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7131 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7132 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7133 cur_params.dot11MeshHWMPmaxPREQretries) ||
7134 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7135 cur_params.path_refresh_time) ||
7136 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7137 cur_params.min_discovery_timeout) ||
7138 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7139 cur_params.dot11MeshHWMPactivePathTimeout) ||
7140 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7141 cur_params.dot11MeshHWMPpreqMinInterval) ||
7142 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7143 cur_params.dot11MeshHWMPperrMinInterval) ||
7144 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7145 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7146 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7147 cur_params.dot11MeshHWMPRootMode) ||
7148 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7149 cur_params.dot11MeshHWMPRannInterval) ||
7150 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7151 cur_params.dot11MeshGateAnnouncementProtocol) ||
7152 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7153 cur_params.dot11MeshForwarding) ||
7154 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7155 cur_params.rssi_threshold) ||
7156 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7157 cur_params.ht_opmode) ||
7158 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7159 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7160 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7161 cur_params.dot11MeshHWMProotInterval) ||
7162 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7163 cur_params.dot11MeshHWMPconfirmationInterval) ||
7164 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7165 cur_params.power_mode) ||
7166 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7167 cur_params.dot11MeshAwakeWindowDuration) ||
7168 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7169 cur_params.plink_timeout) ||
7170 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7171 cur_params.dot11MeshConnectedToMeshGate) ||
7172 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7173 cur_params.dot11MeshNolearn) ||
7174 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7175 cur_params.dot11MeshConnectedToAuthServer))
7176 goto nla_put_failure;
7177 nla_nest_end(msg, pinfoattr);
7178 genlmsg_end(msg, hdr);
7179 return genlmsg_reply(msg, info);
7180
7181 nla_put_failure:
7182 out:
7183 nlmsg_free(msg);
7184 return -ENOBUFS;
7185 }
7186
7187 static const struct nla_policy
7188 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7189 [NL80211_MESHCONF_RETRY_TIMEOUT] =
7190 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7191 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7192 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7193 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7194 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7195 [NL80211_MESHCONF_MAX_PEER_LINKS] =
7196 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7197 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7198 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7199 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7200 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7201 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7202 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7203 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7204 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7205 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7206 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7207 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7208 NLA_POLICY_MIN(NLA_U16, 1),
7209 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7210 NLA_POLICY_MIN(NLA_U16, 1),
7211 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7212 NLA_POLICY_MIN(NLA_U16, 1),
7213 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7214 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7215 NLA_POLICY_MIN(NLA_U16, 1),
7216 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7217 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7218 [NL80211_MESHCONF_RSSI_THRESHOLD] =
7219 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7220 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7221 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7222 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7223 NLA_POLICY_MIN(NLA_U16, 1),
7224 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7225 NLA_POLICY_MIN(NLA_U16, 1),
7226 [NL80211_MESHCONF_POWER_MODE] =
7227 NLA_POLICY_RANGE(NLA_U32,
7228 NL80211_MESH_POWER_ACTIVE,
7229 NL80211_MESH_POWER_MAX),
7230 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7231 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7232 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7233 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7234 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7235 };
7236
7237 static const struct nla_policy
7238 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7239 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7240 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7241 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7242 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7243 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7244 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7245 [NL80211_MESH_SETUP_IE] =
7246 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7247 IEEE80211_MAX_DATA_LEN),
7248 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7249 };
7250
nl80211_parse_mesh_config(struct genl_info * info,struct mesh_config * cfg,u32 * mask_out)7251 static int nl80211_parse_mesh_config(struct genl_info *info,
7252 struct mesh_config *cfg,
7253 u32 *mask_out)
7254 {
7255 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7256 u32 mask = 0;
7257 u16 ht_opmode;
7258
7259 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
7260 do { \
7261 if (tb[attr]) { \
7262 cfg->param = fn(tb[attr]); \
7263 mask |= BIT((attr) - 1); \
7264 } \
7265 } while (0)
7266
7267 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7268 return -EINVAL;
7269 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7270 return -EINVAL;
7271
7272 /* This makes sure that there aren't more than 32 mesh config
7273 * parameters (otherwise our bitfield scheme would not work.) */
7274 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7275
7276 /* Fill in the params struct */
7277 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7278 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7279 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7280 NL80211_MESHCONF_CONFIRM_TIMEOUT,
7281 nla_get_u16);
7282 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7283 NL80211_MESHCONF_HOLDING_TIMEOUT,
7284 nla_get_u16);
7285 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7286 NL80211_MESHCONF_MAX_PEER_LINKS,
7287 nla_get_u16);
7288 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7289 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7290 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7291 NL80211_MESHCONF_TTL, nla_get_u8);
7292 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7293 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7294 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7295 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7296 nla_get_u8);
7297 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7298 mask,
7299 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7300 nla_get_u32);
7301 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7302 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7303 nla_get_u8);
7304 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7305 NL80211_MESHCONF_PATH_REFRESH_TIME,
7306 nla_get_u32);
7307 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7308 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7309 return -EINVAL;
7310 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7311 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7312 nla_get_u16);
7313 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7314 mask,
7315 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7316 nla_get_u32);
7317 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7318 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7319 cfg->dot11MeshHWMPactivePathTimeout > 65535))
7320 return -EINVAL;
7321 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7322 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7323 nla_get_u16);
7324 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7325 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7326 nla_get_u16);
7327 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7328 dot11MeshHWMPnetDiameterTraversalTime, mask,
7329 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7330 nla_get_u16);
7331 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7332 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7333 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7334 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7335 nla_get_u16);
7336 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7337 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7338 nla_get_u8);
7339 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7340 NL80211_MESHCONF_FORWARDING, nla_get_u8);
7341 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7342 NL80211_MESHCONF_RSSI_THRESHOLD,
7343 nla_get_s32);
7344 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7345 NL80211_MESHCONF_CONNECTED_TO_GATE,
7346 nla_get_u8);
7347 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7348 NL80211_MESHCONF_CONNECTED_TO_AS,
7349 nla_get_u8);
7350 /*
7351 * Check HT operation mode based on
7352 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7353 */
7354 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7355 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7356
7357 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7358 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7359 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7360 return -EINVAL;
7361
7362 /* NON_HT_STA bit is reserved, but some programs set it */
7363 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7364
7365 cfg->ht_opmode = ht_opmode;
7366 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7367 }
7368 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7369 dot11MeshHWMPactivePathToRootTimeout, mask,
7370 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7371 nla_get_u32);
7372 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7373 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7374 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7375 return -EINVAL;
7376 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7377 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7378 nla_get_u16);
7379 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7380 mask,
7381 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7382 nla_get_u16);
7383 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7384 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7385 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7386 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7387 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7388 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7389 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7390 NL80211_MESHCONF_NOLEARN, nla_get_u8);
7391 if (mask_out)
7392 *mask_out = mask;
7393
7394 return 0;
7395
7396 #undef FILL_IN_MESH_PARAM_IF_SET
7397 }
7398
nl80211_parse_mesh_setup(struct genl_info * info,struct mesh_setup * setup)7399 static int nl80211_parse_mesh_setup(struct genl_info *info,
7400 struct mesh_setup *setup)
7401 {
7402 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7403 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7404
7405 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7406 return -EINVAL;
7407 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7408 return -EINVAL;
7409
7410 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7411 setup->sync_method =
7412 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7413 IEEE80211_SYNC_METHOD_VENDOR :
7414 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7415
7416 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7417 setup->path_sel_proto =
7418 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7419 IEEE80211_PATH_PROTOCOL_VENDOR :
7420 IEEE80211_PATH_PROTOCOL_HWMP;
7421
7422 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7423 setup->path_metric =
7424 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7425 IEEE80211_PATH_METRIC_VENDOR :
7426 IEEE80211_PATH_METRIC_AIRTIME;
7427
7428 if (tb[NL80211_MESH_SETUP_IE]) {
7429 struct nlattr *ieattr =
7430 tb[NL80211_MESH_SETUP_IE];
7431 setup->ie = nla_data(ieattr);
7432 setup->ie_len = nla_len(ieattr);
7433 }
7434 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7435 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7436 return -EINVAL;
7437 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7438 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7439 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7440 if (setup->is_secure)
7441 setup->user_mpm = true;
7442
7443 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7444 if (!setup->user_mpm)
7445 return -EINVAL;
7446 setup->auth_id =
7447 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7448 }
7449
7450 return 0;
7451 }
7452
nl80211_update_mesh_config(struct sk_buff * skb,struct genl_info * info)7453 static int nl80211_update_mesh_config(struct sk_buff *skb,
7454 struct genl_info *info)
7455 {
7456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7457 struct net_device *dev = info->user_ptr[1];
7458 struct wireless_dev *wdev = dev->ieee80211_ptr;
7459 struct mesh_config cfg;
7460 u32 mask;
7461 int err;
7462
7463 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7464 return -EOPNOTSUPP;
7465
7466 if (!rdev->ops->update_mesh_config)
7467 return -EOPNOTSUPP;
7468
7469 err = nl80211_parse_mesh_config(info, &cfg, &mask);
7470 if (err)
7471 return err;
7472
7473 wdev_lock(wdev);
7474 if (!wdev->mesh_id_len)
7475 err = -ENOLINK;
7476
7477 if (!err)
7478 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7479
7480 wdev_unlock(wdev);
7481
7482 return err;
7483 }
7484
nl80211_put_regdom(const struct ieee80211_regdomain * regdom,struct sk_buff * msg)7485 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7486 struct sk_buff *msg)
7487 {
7488 struct nlattr *nl_reg_rules;
7489 unsigned int i;
7490
7491 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7492 (regdom->dfs_region &&
7493 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7494 goto nla_put_failure;
7495
7496 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7497 if (!nl_reg_rules)
7498 goto nla_put_failure;
7499
7500 for (i = 0; i < regdom->n_reg_rules; i++) {
7501 struct nlattr *nl_reg_rule;
7502 const struct ieee80211_reg_rule *reg_rule;
7503 const struct ieee80211_freq_range *freq_range;
7504 const struct ieee80211_power_rule *power_rule;
7505 unsigned int max_bandwidth_khz;
7506
7507 reg_rule = ®dom->reg_rules[i];
7508 freq_range = ®_rule->freq_range;
7509 power_rule = ®_rule->power_rule;
7510
7511 nl_reg_rule = nla_nest_start_noflag(msg, i);
7512 if (!nl_reg_rule)
7513 goto nla_put_failure;
7514
7515 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7516 if (!max_bandwidth_khz)
7517 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7518 reg_rule);
7519
7520 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7521 reg_rule->flags) ||
7522 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7523 freq_range->start_freq_khz) ||
7524 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7525 freq_range->end_freq_khz) ||
7526 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7527 max_bandwidth_khz) ||
7528 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7529 power_rule->max_antenna_gain) ||
7530 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7531 power_rule->max_eirp) ||
7532 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7533 reg_rule->dfs_cac_ms))
7534 goto nla_put_failure;
7535
7536 nla_nest_end(msg, nl_reg_rule);
7537 }
7538
7539 nla_nest_end(msg, nl_reg_rules);
7540 return 0;
7541
7542 nla_put_failure:
7543 return -EMSGSIZE;
7544 }
7545
nl80211_get_reg_do(struct sk_buff * skb,struct genl_info * info)7546 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7547 {
7548 const struct ieee80211_regdomain *regdom = NULL;
7549 struct cfg80211_registered_device *rdev;
7550 struct wiphy *wiphy = NULL;
7551 struct sk_buff *msg;
7552 void *hdr;
7553
7554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7555 if (!msg)
7556 return -ENOBUFS;
7557
7558 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7559 NL80211_CMD_GET_REG);
7560 if (!hdr)
7561 goto put_failure;
7562
7563 if (info->attrs[NL80211_ATTR_WIPHY]) {
7564 bool self_managed;
7565
7566 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7567 if (IS_ERR(rdev)) {
7568 nlmsg_free(msg);
7569 return PTR_ERR(rdev);
7570 }
7571
7572 wiphy = &rdev->wiphy;
7573 self_managed = wiphy->regulatory_flags &
7574 REGULATORY_WIPHY_SELF_MANAGED;
7575 regdom = get_wiphy_regdom(wiphy);
7576
7577 /* a self-managed-reg device must have a private regdom */
7578 if (WARN_ON(!regdom && self_managed)) {
7579 nlmsg_free(msg);
7580 return -EINVAL;
7581 }
7582
7583 if (regdom &&
7584 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7585 goto nla_put_failure;
7586 }
7587
7588 if (!wiphy && reg_last_request_cell_base() &&
7589 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7590 NL80211_USER_REG_HINT_CELL_BASE))
7591 goto nla_put_failure;
7592
7593 rcu_read_lock();
7594
7595 if (!regdom)
7596 regdom = rcu_dereference(cfg80211_regdomain);
7597
7598 if (nl80211_put_regdom(regdom, msg))
7599 goto nla_put_failure_rcu;
7600
7601 rcu_read_unlock();
7602
7603 genlmsg_end(msg, hdr);
7604 return genlmsg_reply(msg, info);
7605
7606 nla_put_failure_rcu:
7607 rcu_read_unlock();
7608 nla_put_failure:
7609 put_failure:
7610 nlmsg_free(msg);
7611 return -EMSGSIZE;
7612 }
7613
nl80211_send_regdom(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct wiphy * wiphy,const struct ieee80211_regdomain * regdom)7614 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7615 u32 seq, int flags, struct wiphy *wiphy,
7616 const struct ieee80211_regdomain *regdom)
7617 {
7618 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7619 NL80211_CMD_GET_REG);
7620
7621 if (!hdr)
7622 return -1;
7623
7624 genl_dump_check_consistent(cb, hdr);
7625
7626 if (nl80211_put_regdom(regdom, msg))
7627 goto nla_put_failure;
7628
7629 if (!wiphy && reg_last_request_cell_base() &&
7630 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7631 NL80211_USER_REG_HINT_CELL_BASE))
7632 goto nla_put_failure;
7633
7634 if (wiphy &&
7635 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7636 goto nla_put_failure;
7637
7638 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7639 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7640 goto nla_put_failure;
7641
7642 genlmsg_end(msg, hdr);
7643 return 0;
7644
7645 nla_put_failure:
7646 genlmsg_cancel(msg, hdr);
7647 return -EMSGSIZE;
7648 }
7649
nl80211_get_reg_dump(struct sk_buff * skb,struct netlink_callback * cb)7650 static int nl80211_get_reg_dump(struct sk_buff *skb,
7651 struct netlink_callback *cb)
7652 {
7653 const struct ieee80211_regdomain *regdom = NULL;
7654 struct cfg80211_registered_device *rdev;
7655 int err, reg_idx, start = cb->args[2];
7656
7657 rtnl_lock();
7658
7659 if (cfg80211_regdomain && start == 0) {
7660 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7661 NLM_F_MULTI, NULL,
7662 rtnl_dereference(cfg80211_regdomain));
7663 if (err < 0)
7664 goto out_err;
7665 }
7666
7667 /* the global regdom is idx 0 */
7668 reg_idx = 1;
7669 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7670 regdom = get_wiphy_regdom(&rdev->wiphy);
7671 if (!regdom)
7672 continue;
7673
7674 if (++reg_idx <= start)
7675 continue;
7676
7677 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7678 NLM_F_MULTI, &rdev->wiphy, regdom);
7679 if (err < 0) {
7680 reg_idx--;
7681 break;
7682 }
7683 }
7684
7685 cb->args[2] = reg_idx;
7686 err = skb->len;
7687 out_err:
7688 rtnl_unlock();
7689 return err;
7690 }
7691
7692 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7693 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7694 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
7695 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
7696 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
7697 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
7698 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
7699 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
7700 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
7701 };
7702
parse_reg_rule(struct nlattr * tb[],struct ieee80211_reg_rule * reg_rule)7703 static int parse_reg_rule(struct nlattr *tb[],
7704 struct ieee80211_reg_rule *reg_rule)
7705 {
7706 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
7707 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
7708
7709 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7710 return -EINVAL;
7711 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7712 return -EINVAL;
7713 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7714 return -EINVAL;
7715 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7716 return -EINVAL;
7717 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7718 return -EINVAL;
7719
7720 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7721
7722 freq_range->start_freq_khz =
7723 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7724 freq_range->end_freq_khz =
7725 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7726 freq_range->max_bandwidth_khz =
7727 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7728
7729 power_rule->max_eirp =
7730 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7731
7732 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7733 power_rule->max_antenna_gain =
7734 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7735
7736 if (tb[NL80211_ATTR_DFS_CAC_TIME])
7737 reg_rule->dfs_cac_ms =
7738 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7739
7740 return 0;
7741 }
7742
nl80211_set_reg(struct sk_buff * skb,struct genl_info * info)7743 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7744 {
7745 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7746 struct nlattr *nl_reg_rule;
7747 char *alpha2;
7748 int rem_reg_rules, r;
7749 u32 num_rules = 0, rule_idx = 0;
7750 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7751 struct ieee80211_regdomain *rd;
7752
7753 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7754 return -EINVAL;
7755
7756 if (!info->attrs[NL80211_ATTR_REG_RULES])
7757 return -EINVAL;
7758
7759 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7760
7761 if (info->attrs[NL80211_ATTR_DFS_REGION])
7762 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7763
7764 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7765 rem_reg_rules) {
7766 num_rules++;
7767 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7768 return -EINVAL;
7769 }
7770
7771 if (!reg_is_valid_request(alpha2))
7772 return -EINVAL;
7773
7774 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7775 if (!rd)
7776 return -ENOMEM;
7777
7778 rd->n_reg_rules = num_rules;
7779 rd->alpha2[0] = alpha2[0];
7780 rd->alpha2[1] = alpha2[1];
7781
7782 /*
7783 * Disable DFS master mode if the DFS region was
7784 * not supported or known on this kernel.
7785 */
7786 if (reg_supported_dfs_region(dfs_region))
7787 rd->dfs_region = dfs_region;
7788
7789 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7790 rem_reg_rules) {
7791 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7792 nl_reg_rule, reg_rule_policy,
7793 info->extack);
7794 if (r)
7795 goto bad_reg;
7796 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7797 if (r)
7798 goto bad_reg;
7799
7800 rule_idx++;
7801
7802 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7803 r = -EINVAL;
7804 goto bad_reg;
7805 }
7806 }
7807
7808 /* set_regdom takes ownership of rd */
7809 return set_regdom(rd, REGD_SOURCE_CRDA);
7810 bad_reg:
7811 kfree(rd);
7812 return r;
7813 }
7814 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7815
validate_scan_freqs(struct nlattr * freqs)7816 static int validate_scan_freqs(struct nlattr *freqs)
7817 {
7818 struct nlattr *attr1, *attr2;
7819 int n_channels = 0, tmp1, tmp2;
7820
7821 nla_for_each_nested(attr1, freqs, tmp1)
7822 if (nla_len(attr1) != sizeof(u32))
7823 return 0;
7824
7825 nla_for_each_nested(attr1, freqs, tmp1) {
7826 n_channels++;
7827 /*
7828 * Some hardware has a limited channel list for
7829 * scanning, and it is pretty much nonsensical
7830 * to scan for a channel twice, so disallow that
7831 * and don't require drivers to check that the
7832 * channel list they get isn't longer than what
7833 * they can scan, as long as they can scan all
7834 * the channels they registered at once.
7835 */
7836 nla_for_each_nested(attr2, freqs, tmp2)
7837 if (attr1 != attr2 &&
7838 nla_get_u32(attr1) == nla_get_u32(attr2))
7839 return 0;
7840 }
7841
7842 return n_channels;
7843 }
7844
is_band_valid(struct wiphy * wiphy,enum nl80211_band b)7845 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7846 {
7847 return b < NUM_NL80211_BANDS && wiphy->bands[b];
7848 }
7849
parse_bss_select(struct nlattr * nla,struct wiphy * wiphy,struct cfg80211_bss_selection * bss_select)7850 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7851 struct cfg80211_bss_selection *bss_select)
7852 {
7853 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7854 struct nlattr *nest;
7855 int err;
7856 bool found = false;
7857 int i;
7858
7859 /* only process one nested attribute */
7860 nest = nla_data(nla);
7861 if (!nla_ok(nest, nla_len(nest)))
7862 return -EINVAL;
7863
7864 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7865 nest, nl80211_bss_select_policy,
7866 NULL);
7867 if (err)
7868 return err;
7869
7870 /* only one attribute may be given */
7871 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7872 if (attr[i]) {
7873 if (found)
7874 return -EINVAL;
7875 found = true;
7876 }
7877 }
7878
7879 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7880
7881 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7882 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7883
7884 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7885 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7886 bss_select->param.band_pref =
7887 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7888 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7889 return -EINVAL;
7890 }
7891
7892 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7893 struct nl80211_bss_select_rssi_adjust *adj_param;
7894
7895 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7896 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7897 bss_select->param.adjust.band = adj_param->band;
7898 bss_select->param.adjust.delta = adj_param->delta;
7899 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7900 return -EINVAL;
7901 }
7902
7903 /* user-space did not provide behaviour attribute */
7904 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7905 return -EINVAL;
7906
7907 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7908 return -EINVAL;
7909
7910 return 0;
7911 }
7912
nl80211_parse_random_mac(struct nlattr ** attrs,u8 * mac_addr,u8 * mac_addr_mask)7913 int nl80211_parse_random_mac(struct nlattr **attrs,
7914 u8 *mac_addr, u8 *mac_addr_mask)
7915 {
7916 int i;
7917
7918 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7919 eth_zero_addr(mac_addr);
7920 eth_zero_addr(mac_addr_mask);
7921 mac_addr[0] = 0x2;
7922 mac_addr_mask[0] = 0x3;
7923
7924 return 0;
7925 }
7926
7927 /* need both or none */
7928 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7929 return -EINVAL;
7930
7931 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7932 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7933
7934 /* don't allow or configure an mcast address */
7935 if (!is_multicast_ether_addr(mac_addr_mask) ||
7936 is_multicast_ether_addr(mac_addr))
7937 return -EINVAL;
7938
7939 /*
7940 * allow users to pass a MAC address that has bits set outside
7941 * of the mask, but don't bother drivers with having to deal
7942 * with such bits
7943 */
7944 for (i = 0; i < ETH_ALEN; i++)
7945 mac_addr[i] &= mac_addr_mask[i];
7946
7947 return 0;
7948 }
7949
cfg80211_off_channel_oper_allowed(struct wireless_dev * wdev)7950 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7951 {
7952 ASSERT_WDEV_LOCK(wdev);
7953
7954 if (!cfg80211_beaconing_iface_active(wdev))
7955 return true;
7956
7957 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7958 return true;
7959
7960 return regulatory_pre_cac_allowed(wdev->wiphy);
7961 }
7962
nl80211_check_scan_feat(struct wiphy * wiphy,u32 flags,u32 flag,enum nl80211_ext_feature_index feat)7963 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7964 enum nl80211_ext_feature_index feat)
7965 {
7966 if (!(flags & flag))
7967 return true;
7968 if (wiphy_ext_feature_isset(wiphy, feat))
7969 return true;
7970 return false;
7971 }
7972
7973 static int
nl80211_check_scan_flags(struct wiphy * wiphy,struct wireless_dev * wdev,void * request,struct nlattr ** attrs,bool is_sched_scan)7974 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7975 void *request, struct nlattr **attrs,
7976 bool is_sched_scan)
7977 {
7978 u8 *mac_addr, *mac_addr_mask;
7979 u32 *flags;
7980 enum nl80211_feature_flags randomness_flag;
7981
7982 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7983 return 0;
7984
7985 if (is_sched_scan) {
7986 struct cfg80211_sched_scan_request *req = request;
7987
7988 randomness_flag = wdev ?
7989 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7990 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7991 flags = &req->flags;
7992 mac_addr = req->mac_addr;
7993 mac_addr_mask = req->mac_addr_mask;
7994 } else {
7995 struct cfg80211_scan_request *req = request;
7996
7997 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7998 flags = &req->flags;
7999 mac_addr = req->mac_addr;
8000 mac_addr_mask = req->mac_addr_mask;
8001 }
8002
8003 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8004
8005 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8006 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8007 !nl80211_check_scan_feat(wiphy, *flags,
8008 NL80211_SCAN_FLAG_LOW_SPAN,
8009 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8010 !nl80211_check_scan_feat(wiphy, *flags,
8011 NL80211_SCAN_FLAG_LOW_POWER,
8012 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8013 !nl80211_check_scan_feat(wiphy, *flags,
8014 NL80211_SCAN_FLAG_HIGH_ACCURACY,
8015 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8016 !nl80211_check_scan_feat(wiphy, *flags,
8017 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8018 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8019 !nl80211_check_scan_feat(wiphy, *flags,
8020 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8021 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8022 !nl80211_check_scan_feat(wiphy, *flags,
8023 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8024 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8025 !nl80211_check_scan_feat(wiphy, *flags,
8026 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8027 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8028 !nl80211_check_scan_feat(wiphy, *flags,
8029 NL80211_SCAN_FLAG_RANDOM_SN,
8030 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8031 !nl80211_check_scan_feat(wiphy, *flags,
8032 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8033 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8034 return -EOPNOTSUPP;
8035
8036 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8037 int err;
8038
8039 if (!(wiphy->features & randomness_flag) ||
8040 (wdev && wdev->current_bss))
8041 return -EOPNOTSUPP;
8042
8043 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8044 if (err)
8045 return err;
8046 }
8047
8048 return 0;
8049 }
8050
nl80211_trigger_scan(struct sk_buff * skb,struct genl_info * info)8051 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8052 {
8053 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8054 struct wireless_dev *wdev = info->user_ptr[1];
8055 struct cfg80211_scan_request *request;
8056 struct nlattr *scan_freqs = NULL;
8057 bool scan_freqs_khz = false;
8058 struct nlattr *attr;
8059 struct wiphy *wiphy;
8060 int err, tmp, n_ssids = 0, n_channels, i;
8061 size_t ie_len;
8062
8063 wiphy = &rdev->wiphy;
8064
8065 if (wdev->iftype == NL80211_IFTYPE_NAN)
8066 return -EOPNOTSUPP;
8067
8068 if (!rdev->ops->scan)
8069 return -EOPNOTSUPP;
8070
8071 if (rdev->scan_req || rdev->scan_msg)
8072 return -EBUSY;
8073
8074 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8075 if (!wiphy_ext_feature_isset(wiphy,
8076 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8077 return -EOPNOTSUPP;
8078 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8079 scan_freqs_khz = true;
8080 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8081 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8082
8083 if (scan_freqs) {
8084 n_channels = validate_scan_freqs(scan_freqs);
8085 if (!n_channels)
8086 return -EINVAL;
8087 } else {
8088 n_channels = ieee80211_get_num_supported_channels(wiphy);
8089 }
8090
8091 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8092 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8093 n_ssids++;
8094
8095 if (n_ssids > wiphy->max_scan_ssids)
8096 return -EINVAL;
8097
8098 if (info->attrs[NL80211_ATTR_IE])
8099 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8100 else
8101 ie_len = 0;
8102
8103 if (ie_len > wiphy->max_scan_ie_len)
8104 return -EINVAL;
8105
8106 request = kzalloc(sizeof(*request)
8107 + sizeof(*request->ssids) * n_ssids
8108 + sizeof(*request->channels) * n_channels
8109 + ie_len, GFP_KERNEL);
8110 if (!request)
8111 return -ENOMEM;
8112
8113 if (n_ssids)
8114 request->ssids = (void *)&request->channels[n_channels];
8115 request->n_ssids = n_ssids;
8116 if (ie_len) {
8117 if (n_ssids)
8118 request->ie = (void *)(request->ssids + n_ssids);
8119 else
8120 request->ie = (void *)(request->channels + n_channels);
8121 }
8122
8123 i = 0;
8124 if (scan_freqs) {
8125 /* user specified, bail out if channel not found */
8126 nla_for_each_nested(attr, scan_freqs, tmp) {
8127 struct ieee80211_channel *chan;
8128 int freq = nla_get_u32(attr);
8129
8130 if (!scan_freqs_khz)
8131 freq = MHZ_TO_KHZ(freq);
8132
8133 chan = ieee80211_get_channel_khz(wiphy, freq);
8134 if (!chan) {
8135 err = -EINVAL;
8136 goto out_free;
8137 }
8138
8139 /* ignore disabled channels */
8140 if (chan->flags & IEEE80211_CHAN_DISABLED)
8141 continue;
8142
8143 request->channels[i] = chan;
8144 i++;
8145 }
8146 } else {
8147 enum nl80211_band band;
8148
8149 /* all channels */
8150 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8151 int j;
8152
8153 if (!wiphy->bands[band])
8154 continue;
8155 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8156 struct ieee80211_channel *chan;
8157
8158 chan = &wiphy->bands[band]->channels[j];
8159
8160 if (chan->flags & IEEE80211_CHAN_DISABLED)
8161 continue;
8162
8163 request->channels[i] = chan;
8164 i++;
8165 }
8166 }
8167 }
8168
8169 if (!i) {
8170 err = -EINVAL;
8171 goto out_free;
8172 }
8173
8174 request->n_channels = i;
8175
8176 wdev_lock(wdev);
8177 if (!cfg80211_off_channel_oper_allowed(wdev)) {
8178 struct ieee80211_channel *chan;
8179
8180 if (request->n_channels != 1) {
8181 wdev_unlock(wdev);
8182 err = -EBUSY;
8183 goto out_free;
8184 }
8185
8186 chan = request->channels[0];
8187 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8188 wdev_unlock(wdev);
8189 err = -EBUSY;
8190 goto out_free;
8191 }
8192 }
8193 wdev_unlock(wdev);
8194
8195 i = 0;
8196 if (n_ssids) {
8197 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8198 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8199 err = -EINVAL;
8200 goto out_free;
8201 }
8202 request->ssids[i].ssid_len = nla_len(attr);
8203 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8204 i++;
8205 }
8206 }
8207
8208 if (info->attrs[NL80211_ATTR_IE]) {
8209 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8210 memcpy((void *)request->ie,
8211 nla_data(info->attrs[NL80211_ATTR_IE]),
8212 request->ie_len);
8213 }
8214
8215 for (i = 0; i < NUM_NL80211_BANDS; i++)
8216 if (wiphy->bands[i])
8217 request->rates[i] =
8218 (1 << wiphy->bands[i]->n_bitrates) - 1;
8219
8220 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8221 nla_for_each_nested(attr,
8222 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8223 tmp) {
8224 enum nl80211_band band = nla_type(attr);
8225
8226 if (band < 0 || band >= NUM_NL80211_BANDS) {
8227 err = -EINVAL;
8228 goto out_free;
8229 }
8230
8231 if (!wiphy->bands[band])
8232 continue;
8233
8234 err = ieee80211_get_ratemask(wiphy->bands[band],
8235 nla_data(attr),
8236 nla_len(attr),
8237 &request->rates[band]);
8238 if (err)
8239 goto out_free;
8240 }
8241 }
8242
8243 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8244 if (!wiphy_ext_feature_isset(wiphy,
8245 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
8246 err = -EOPNOTSUPP;
8247 goto out_free;
8248 }
8249
8250 request->duration =
8251 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8252 request->duration_mandatory =
8253 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8254 }
8255
8256 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8257 false);
8258 if (err)
8259 goto out_free;
8260
8261 request->no_cck =
8262 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8263
8264 /* Initial implementation used NL80211_ATTR_MAC to set the specific
8265 * BSSID to scan for. This was problematic because that same attribute
8266 * was already used for another purpose (local random MAC address). The
8267 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8268 * compatibility with older userspace components, also use the
8269 * NL80211_ATTR_MAC value here if it can be determined to be used for
8270 * the specific BSSID use case instead of the random MAC address
8271 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8272 */
8273 if (info->attrs[NL80211_ATTR_BSSID])
8274 memcpy(request->bssid,
8275 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8276 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8277 info->attrs[NL80211_ATTR_MAC])
8278 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8279 ETH_ALEN);
8280 else
8281 eth_broadcast_addr(request->bssid);
8282
8283 request->wdev = wdev;
8284 request->wiphy = &rdev->wiphy;
8285 request->scan_start = jiffies;
8286
8287 rdev->scan_req = request;
8288 err = cfg80211_scan(rdev);
8289
8290 if (err)
8291 goto out_free;
8292
8293 nl80211_send_scan_start(rdev, wdev);
8294 if (wdev->netdev)
8295 dev_hold(wdev->netdev);
8296
8297 return 0;
8298
8299 out_free:
8300 rdev->scan_req = NULL;
8301 kfree(request);
8302
8303 return err;
8304 }
8305
nl80211_abort_scan(struct sk_buff * skb,struct genl_info * info)8306 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8307 {
8308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8309 struct wireless_dev *wdev = info->user_ptr[1];
8310
8311 if (!rdev->ops->abort_scan)
8312 return -EOPNOTSUPP;
8313
8314 if (rdev->scan_msg)
8315 return 0;
8316
8317 if (!rdev->scan_req)
8318 return -ENOENT;
8319
8320 rdev_abort_scan(rdev, wdev);
8321 return 0;
8322 }
8323
8324 static int
nl80211_parse_sched_scan_plans(struct wiphy * wiphy,int n_plans,struct cfg80211_sched_scan_request * request,struct nlattr ** attrs)8325 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8326 struct cfg80211_sched_scan_request *request,
8327 struct nlattr **attrs)
8328 {
8329 int tmp, err, i = 0;
8330 struct nlattr *attr;
8331
8332 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8333 u32 interval;
8334
8335 /*
8336 * If scan plans are not specified,
8337 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8338 * case one scan plan will be set with the specified scan
8339 * interval and infinite number of iterations.
8340 */
8341 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8342 if (!interval)
8343 return -EINVAL;
8344
8345 request->scan_plans[0].interval =
8346 DIV_ROUND_UP(interval, MSEC_PER_SEC);
8347 if (!request->scan_plans[0].interval)
8348 return -EINVAL;
8349
8350 if (request->scan_plans[0].interval >
8351 wiphy->max_sched_scan_plan_interval)
8352 request->scan_plans[0].interval =
8353 wiphy->max_sched_scan_plan_interval;
8354
8355 return 0;
8356 }
8357
8358 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8359 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8360
8361 if (WARN_ON(i >= n_plans))
8362 return -EINVAL;
8363
8364 err = nla_parse_nested_deprecated(plan,
8365 NL80211_SCHED_SCAN_PLAN_MAX,
8366 attr, nl80211_plan_policy,
8367 NULL);
8368 if (err)
8369 return err;
8370
8371 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8372 return -EINVAL;
8373
8374 request->scan_plans[i].interval =
8375 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8376 if (!request->scan_plans[i].interval ||
8377 request->scan_plans[i].interval >
8378 wiphy->max_sched_scan_plan_interval)
8379 return -EINVAL;
8380
8381 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8382 request->scan_plans[i].iterations =
8383 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8384 if (!request->scan_plans[i].iterations ||
8385 (request->scan_plans[i].iterations >
8386 wiphy->max_sched_scan_plan_iterations))
8387 return -EINVAL;
8388 } else if (i < n_plans - 1) {
8389 /*
8390 * All scan plans but the last one must specify
8391 * a finite number of iterations
8392 */
8393 return -EINVAL;
8394 }
8395
8396 i++;
8397 }
8398
8399 /*
8400 * The last scan plan must not specify the number of
8401 * iterations, it is supposed to run infinitely
8402 */
8403 if (request->scan_plans[n_plans - 1].iterations)
8404 return -EINVAL;
8405
8406 return 0;
8407 }
8408
8409 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)8410 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8411 struct cfg80211_match_set *match_sets,
8412 struct nlattr *tb_band_rssi,
8413 s32 rssi_thold)
8414 {
8415 struct nlattr *attr;
8416 int i, tmp, ret = 0;
8417
8418 if (!wiphy_ext_feature_isset(wiphy,
8419 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8420 if (tb_band_rssi)
8421 ret = -EOPNOTSUPP;
8422 else
8423 for (i = 0; i < NUM_NL80211_BANDS; i++)
8424 match_sets->per_band_rssi_thold[i] =
8425 NL80211_SCAN_RSSI_THOLD_OFF;
8426 return ret;
8427 }
8428
8429 for (i = 0; i < NUM_NL80211_BANDS; i++)
8430 match_sets->per_band_rssi_thold[i] = rssi_thold;
8431
8432 nla_for_each_nested(attr, tb_band_rssi, tmp) {
8433 enum nl80211_band band = nla_type(attr);
8434
8435 if (band < 0 || band >= NUM_NL80211_BANDS)
8436 return -EINVAL;
8437
8438 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8439 }
8440
8441 return 0;
8442 }
8443
8444 static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy * wiphy,struct wireless_dev * wdev,struct nlattr ** attrs,int max_match_sets)8445 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8446 struct nlattr **attrs, int max_match_sets)
8447 {
8448 struct cfg80211_sched_scan_request *request;
8449 struct nlattr *attr;
8450 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8451 enum nl80211_band band;
8452 size_t ie_len;
8453 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8454 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8455
8456 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8457 n_channels = validate_scan_freqs(
8458 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8459 if (!n_channels)
8460 return ERR_PTR(-EINVAL);
8461 } else {
8462 n_channels = ieee80211_get_num_supported_channels(wiphy);
8463 }
8464
8465 if (attrs[NL80211_ATTR_SCAN_SSIDS])
8466 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8467 tmp)
8468 n_ssids++;
8469
8470 if (n_ssids > wiphy->max_sched_scan_ssids)
8471 return ERR_PTR(-EINVAL);
8472
8473 /*
8474 * First, count the number of 'real' matchsets. Due to an issue with
8475 * the old implementation, matchsets containing only the RSSI attribute
8476 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8477 * RSSI for all matchsets, rather than their own matchset for reporting
8478 * all APs with a strong RSSI. This is needed to be compatible with
8479 * older userspace that treated a matchset with only the RSSI as the
8480 * global RSSI for all other matchsets - if there are other matchsets.
8481 */
8482 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8483 nla_for_each_nested(attr,
8484 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8485 tmp) {
8486 struct nlattr *rssi;
8487
8488 err = nla_parse_nested_deprecated(tb,
8489 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8490 attr,
8491 nl80211_match_policy,
8492 NULL);
8493 if (err)
8494 return ERR_PTR(err);
8495
8496 /* SSID and BSSID are mutually exclusive */
8497 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8498 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8499 return ERR_PTR(-EINVAL);
8500
8501 /* add other standalone attributes here */
8502 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8503 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8504 n_match_sets++;
8505 continue;
8506 }
8507 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8508 if (rssi)
8509 default_match_rssi = nla_get_s32(rssi);
8510 }
8511 }
8512
8513 /* However, if there's no other matchset, add the RSSI one */
8514 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8515 n_match_sets = 1;
8516
8517 if (n_match_sets > max_match_sets)
8518 return ERR_PTR(-EINVAL);
8519
8520 if (attrs[NL80211_ATTR_IE])
8521 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8522 else
8523 ie_len = 0;
8524
8525 if (ie_len > wiphy->max_sched_scan_ie_len)
8526 return ERR_PTR(-EINVAL);
8527
8528 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8529 /*
8530 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8531 * each scan plan already specifies its own interval
8532 */
8533 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8534 return ERR_PTR(-EINVAL);
8535
8536 nla_for_each_nested(attr,
8537 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8538 n_plans++;
8539 } else {
8540 /*
8541 * The scan interval attribute is kept for backward
8542 * compatibility. If no scan plans are specified and sched scan
8543 * interval is specified, one scan plan will be set with this
8544 * scan interval and infinite number of iterations.
8545 */
8546 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8547 return ERR_PTR(-EINVAL);
8548
8549 n_plans = 1;
8550 }
8551
8552 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8553 return ERR_PTR(-EINVAL);
8554
8555 if (!wiphy_ext_feature_isset(
8556 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8557 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8558 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8559 return ERR_PTR(-EINVAL);
8560
8561 request = kzalloc(sizeof(*request)
8562 + sizeof(*request->ssids) * n_ssids
8563 + sizeof(*request->match_sets) * n_match_sets
8564 + sizeof(*request->scan_plans) * n_plans
8565 + sizeof(*request->channels) * n_channels
8566 + ie_len, GFP_KERNEL);
8567 if (!request)
8568 return ERR_PTR(-ENOMEM);
8569
8570 if (n_ssids)
8571 request->ssids = (void *)&request->channels[n_channels];
8572 request->n_ssids = n_ssids;
8573 if (ie_len) {
8574 if (n_ssids)
8575 request->ie = (void *)(request->ssids + n_ssids);
8576 else
8577 request->ie = (void *)(request->channels + n_channels);
8578 }
8579
8580 if (n_match_sets) {
8581 if (request->ie)
8582 request->match_sets = (void *)(request->ie + ie_len);
8583 else if (n_ssids)
8584 request->match_sets =
8585 (void *)(request->ssids + n_ssids);
8586 else
8587 request->match_sets =
8588 (void *)(request->channels + n_channels);
8589 }
8590 request->n_match_sets = n_match_sets;
8591
8592 if (n_match_sets)
8593 request->scan_plans = (void *)(request->match_sets +
8594 n_match_sets);
8595 else if (request->ie)
8596 request->scan_plans = (void *)(request->ie + ie_len);
8597 else if (n_ssids)
8598 request->scan_plans = (void *)(request->ssids + n_ssids);
8599 else
8600 request->scan_plans = (void *)(request->channels + n_channels);
8601
8602 request->n_scan_plans = n_plans;
8603
8604 i = 0;
8605 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8606 /* user specified, bail out if channel not found */
8607 nla_for_each_nested(attr,
8608 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8609 tmp) {
8610 struct ieee80211_channel *chan;
8611
8612 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8613
8614 if (!chan) {
8615 err = -EINVAL;
8616 goto out_free;
8617 }
8618
8619 /* ignore disabled channels */
8620 if (chan->flags & IEEE80211_CHAN_DISABLED)
8621 continue;
8622
8623 request->channels[i] = chan;
8624 i++;
8625 }
8626 } else {
8627 /* all channels */
8628 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8629 int j;
8630
8631 if (!wiphy->bands[band])
8632 continue;
8633 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8634 struct ieee80211_channel *chan;
8635
8636 chan = &wiphy->bands[band]->channels[j];
8637
8638 if (chan->flags & IEEE80211_CHAN_DISABLED)
8639 continue;
8640
8641 request->channels[i] = chan;
8642 i++;
8643 }
8644 }
8645 }
8646
8647 if (!i) {
8648 err = -EINVAL;
8649 goto out_free;
8650 }
8651
8652 request->n_channels = i;
8653
8654 i = 0;
8655 if (n_ssids) {
8656 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8657 tmp) {
8658 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8659 err = -EINVAL;
8660 goto out_free;
8661 }
8662 request->ssids[i].ssid_len = nla_len(attr);
8663 memcpy(request->ssids[i].ssid, nla_data(attr),
8664 nla_len(attr));
8665 i++;
8666 }
8667 }
8668
8669 i = 0;
8670 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8671 nla_for_each_nested(attr,
8672 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8673 tmp) {
8674 struct nlattr *ssid, *bssid, *rssi;
8675
8676 err = nla_parse_nested_deprecated(tb,
8677 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8678 attr,
8679 nl80211_match_policy,
8680 NULL);
8681 if (err)
8682 goto out_free;
8683 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8684 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8685
8686 if (!ssid && !bssid) {
8687 i++;
8688 continue;
8689 }
8690
8691 if (WARN_ON(i >= n_match_sets)) {
8692 /* this indicates a programming error,
8693 * the loop above should have verified
8694 * things properly
8695 */
8696 err = -EINVAL;
8697 goto out_free;
8698 }
8699
8700 if (ssid) {
8701 memcpy(request->match_sets[i].ssid.ssid,
8702 nla_data(ssid), nla_len(ssid));
8703 request->match_sets[i].ssid.ssid_len =
8704 nla_len(ssid);
8705 }
8706 if (bssid)
8707 memcpy(request->match_sets[i].bssid,
8708 nla_data(bssid), ETH_ALEN);
8709
8710 /* special attribute - old implementation w/a */
8711 request->match_sets[i].rssi_thold = default_match_rssi;
8712 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8713 if (rssi)
8714 request->match_sets[i].rssi_thold =
8715 nla_get_s32(rssi);
8716
8717 /* Parse per band RSSI attribute */
8718 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8719 &request->match_sets[i],
8720 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8721 request->match_sets[i].rssi_thold);
8722 if (err)
8723 goto out_free;
8724
8725 i++;
8726 }
8727
8728 /* there was no other matchset, so the RSSI one is alone */
8729 if (i == 0 && n_match_sets)
8730 request->match_sets[0].rssi_thold = default_match_rssi;
8731
8732 request->min_rssi_thold = INT_MAX;
8733 for (i = 0; i < n_match_sets; i++)
8734 request->min_rssi_thold =
8735 min(request->match_sets[i].rssi_thold,
8736 request->min_rssi_thold);
8737 } else {
8738 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8739 }
8740
8741 if (ie_len) {
8742 request->ie_len = ie_len;
8743 memcpy((void *)request->ie,
8744 nla_data(attrs[NL80211_ATTR_IE]),
8745 request->ie_len);
8746 }
8747
8748 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8749 if (err)
8750 goto out_free;
8751
8752 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8753 request->delay =
8754 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8755
8756 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8757 request->relative_rssi = nla_get_s8(
8758 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8759 request->relative_rssi_set = true;
8760 }
8761
8762 if (request->relative_rssi_set &&
8763 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8764 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8765
8766 rssi_adjust = nla_data(
8767 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8768 request->rssi_adjust.band = rssi_adjust->band;
8769 request->rssi_adjust.delta = rssi_adjust->delta;
8770 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8771 err = -EINVAL;
8772 goto out_free;
8773 }
8774 }
8775
8776 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8777 if (err)
8778 goto out_free;
8779
8780 request->scan_start = jiffies;
8781
8782 return request;
8783
8784 out_free:
8785 kfree(request);
8786 return ERR_PTR(err);
8787 }
8788
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)8789 static int nl80211_start_sched_scan(struct sk_buff *skb,
8790 struct genl_info *info)
8791 {
8792 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8793 struct net_device *dev = info->user_ptr[1];
8794 struct wireless_dev *wdev = dev->ieee80211_ptr;
8795 struct cfg80211_sched_scan_request *sched_scan_req;
8796 bool want_multi;
8797 int err;
8798
8799 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8800 return -EOPNOTSUPP;
8801
8802 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8803 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8804 if (err)
8805 return err;
8806
8807 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8808 info->attrs,
8809 rdev->wiphy.max_match_sets);
8810
8811 err = PTR_ERR_OR_ZERO(sched_scan_req);
8812 if (err)
8813 goto out_err;
8814
8815 /* leave request id zero for legacy request
8816 * or if driver does not support multi-scheduled scan
8817 */
8818 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8819 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8820
8821 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8822 if (err)
8823 goto out_free;
8824
8825 sched_scan_req->dev = dev;
8826 sched_scan_req->wiphy = &rdev->wiphy;
8827
8828 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8829 sched_scan_req->owner_nlportid = info->snd_portid;
8830
8831 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8832
8833 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8834 return 0;
8835
8836 out_free:
8837 kfree(sched_scan_req);
8838 out_err:
8839 return err;
8840 }
8841
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)8842 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8843 struct genl_info *info)
8844 {
8845 struct cfg80211_sched_scan_request *req;
8846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8847 u64 cookie;
8848
8849 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8850 return -EOPNOTSUPP;
8851
8852 if (info->attrs[NL80211_ATTR_COOKIE]) {
8853 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8854 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8855 }
8856
8857 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8858 struct cfg80211_sched_scan_request,
8859 list);
8860 if (!req || req->reqid ||
8861 (req->owner_nlportid &&
8862 req->owner_nlportid != info->snd_portid))
8863 return -ENOENT;
8864
8865 return cfg80211_stop_sched_scan_req(rdev, req, false);
8866 }
8867
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)8868 static int nl80211_start_radar_detection(struct sk_buff *skb,
8869 struct genl_info *info)
8870 {
8871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8872 struct net_device *dev = info->user_ptr[1];
8873 struct wireless_dev *wdev = dev->ieee80211_ptr;
8874 struct wiphy *wiphy = wdev->wiphy;
8875 struct cfg80211_chan_def chandef;
8876 enum nl80211_dfs_regions dfs_region;
8877 unsigned int cac_time_ms;
8878 int err;
8879
8880 dfs_region = reg_get_dfs_region(wiphy);
8881 if (dfs_region == NL80211_DFS_UNSET)
8882 return -EINVAL;
8883
8884 err = nl80211_parse_chandef(rdev, info, &chandef);
8885 if (err)
8886 return err;
8887
8888 if (netif_carrier_ok(dev))
8889 return -EBUSY;
8890
8891 if (wdev->cac_started)
8892 return -EBUSY;
8893
8894 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8895 if (err < 0)
8896 return err;
8897
8898 if (err == 0)
8899 return -EINVAL;
8900
8901 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8902 return -EINVAL;
8903
8904 /* CAC start is offloaded to HW and can't be started manually */
8905 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8906 return -EOPNOTSUPP;
8907
8908 if (!rdev->ops->start_radar_detection)
8909 return -EOPNOTSUPP;
8910
8911 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8912 if (WARN_ON(!cac_time_ms))
8913 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8914
8915 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8916 if (!err) {
8917 wdev->chandef = chandef;
8918 wdev->cac_started = true;
8919 wdev->cac_start_time = jiffies;
8920 wdev->cac_time_ms = cac_time_ms;
8921 }
8922 return err;
8923 }
8924
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)8925 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8926 struct genl_info *info)
8927 {
8928 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8929 struct net_device *dev = info->user_ptr[1];
8930 struct wireless_dev *wdev = dev->ieee80211_ptr;
8931 struct wiphy *wiphy = wdev->wiphy;
8932 struct cfg80211_chan_def chandef;
8933 enum nl80211_dfs_regions dfs_region;
8934 int err;
8935
8936 dfs_region = reg_get_dfs_region(wiphy);
8937 if (dfs_region == NL80211_DFS_UNSET) {
8938 GENL_SET_ERR_MSG(info,
8939 "DFS Region is not set. Unexpected Radar indication");
8940 return -EINVAL;
8941 }
8942
8943 err = nl80211_parse_chandef(rdev, info, &chandef);
8944 if (err) {
8945 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8946 return err;
8947 }
8948
8949 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8950 if (err < 0) {
8951 GENL_SET_ERR_MSG(info, "chandef is invalid");
8952 return err;
8953 }
8954
8955 if (err == 0) {
8956 GENL_SET_ERR_MSG(info,
8957 "Unexpected Radar indication for chandef/iftype");
8958 return -EINVAL;
8959 }
8960
8961 /* Do not process this notification if radar is already detected
8962 * by kernel on this channel, and return success.
8963 */
8964 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8965 return 0;
8966
8967 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8968
8969 cfg80211_sched_dfs_chan_update(rdev);
8970
8971 rdev->radar_chandef = chandef;
8972
8973 /* Propagate this notification to other radios as well */
8974 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8975
8976 return 0;
8977 }
8978
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)8979 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8980 {
8981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8982 struct net_device *dev = info->user_ptr[1];
8983 struct wireless_dev *wdev = dev->ieee80211_ptr;
8984 struct cfg80211_csa_settings params;
8985 /* csa_attrs is defined static to avoid waste of stack size - this
8986 * function is called under RTNL lock, so this should not be a problem.
8987 */
8988 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8989 int err;
8990 bool need_new_beacon = false;
8991 bool need_handle_dfs_flag = true;
8992 int len, i;
8993 u32 cs_count;
8994
8995 if (!rdev->ops->channel_switch ||
8996 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8997 return -EOPNOTSUPP;
8998
8999 switch (dev->ieee80211_ptr->iftype) {
9000 case NL80211_IFTYPE_AP:
9001 case NL80211_IFTYPE_P2P_GO:
9002 need_new_beacon = true;
9003 /* For all modes except AP the handle_dfs flag needs to be
9004 * supplied to tell the kernel that userspace will handle radar
9005 * events when they happen. Otherwise a switch to a channel
9006 * requiring DFS will be rejected.
9007 */
9008 need_handle_dfs_flag = false;
9009
9010 /* useless if AP is not running */
9011 if (!wdev->beacon_interval)
9012 return -ENOTCONN;
9013 break;
9014 case NL80211_IFTYPE_ADHOC:
9015 if (!wdev->ssid_len)
9016 return -ENOTCONN;
9017 break;
9018 case NL80211_IFTYPE_MESH_POINT:
9019 if (!wdev->mesh_id_len)
9020 return -ENOTCONN;
9021 break;
9022 default:
9023 return -EOPNOTSUPP;
9024 }
9025
9026 memset(¶ms, 0, sizeof(params));
9027 params.beacon_csa.ftm_responder = -1;
9028
9029 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9030 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9031 return -EINVAL;
9032
9033 /* only important for AP, IBSS and mesh create IEs internally */
9034 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9035 return -EINVAL;
9036
9037 /* Even though the attribute is u32, the specification says
9038 * u8, so let's make sure we don't overflow.
9039 */
9040 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9041 if (cs_count > 255)
9042 return -EINVAL;
9043
9044 params.count = cs_count;
9045
9046 if (!need_new_beacon)
9047 goto skip_beacons;
9048
9049 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after);
9050 if (err)
9051 return err;
9052
9053 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9054 info->attrs[NL80211_ATTR_CSA_IES],
9055 nl80211_policy, info->extack);
9056 if (err)
9057 return err;
9058
9059 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa);
9060 if (err)
9061 return err;
9062
9063 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9064 return -EINVAL;
9065
9066 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9067 if (!len || (len % sizeof(u16)))
9068 return -EINVAL;
9069
9070 params.n_counter_offsets_beacon = len / sizeof(u16);
9071 if (rdev->wiphy.max_num_csa_counters &&
9072 (params.n_counter_offsets_beacon >
9073 rdev->wiphy.max_num_csa_counters))
9074 return -EINVAL;
9075
9076 params.counter_offsets_beacon =
9077 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9078
9079 /* sanity checks - counters should fit and be the same */
9080 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9081 u16 offset = params.counter_offsets_beacon[i];
9082
9083 if (offset >= params.beacon_csa.tail_len)
9084 return -EINVAL;
9085
9086 if (params.beacon_csa.tail[offset] != params.count)
9087 return -EINVAL;
9088 }
9089
9090 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9091 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9092 if (!len || (len % sizeof(u16)))
9093 return -EINVAL;
9094
9095 params.n_counter_offsets_presp = len / sizeof(u16);
9096 if (rdev->wiphy.max_num_csa_counters &&
9097 (params.n_counter_offsets_presp >
9098 rdev->wiphy.max_num_csa_counters))
9099 return -EINVAL;
9100
9101 params.counter_offsets_presp =
9102 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9103
9104 /* sanity checks - counters should fit and be the same */
9105 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9106 u16 offset = params.counter_offsets_presp[i];
9107
9108 if (offset >= params.beacon_csa.probe_resp_len)
9109 return -EINVAL;
9110
9111 if (params.beacon_csa.probe_resp[offset] !=
9112 params.count)
9113 return -EINVAL;
9114 }
9115 }
9116
9117 skip_beacons:
9118 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
9119 if (err)
9120 return err;
9121
9122 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
9123 wdev->iftype))
9124 return -EINVAL;
9125
9126 err = cfg80211_chandef_dfs_required(wdev->wiphy,
9127 ¶ms.chandef,
9128 wdev->iftype);
9129 if (err < 0)
9130 return err;
9131
9132 if (err > 0) {
9133 params.radar_required = true;
9134 if (need_handle_dfs_flag &&
9135 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9136 return -EINVAL;
9137 }
9138 }
9139
9140 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9141 params.block_tx = true;
9142
9143 wdev_lock(wdev);
9144 err = rdev_channel_switch(rdev, dev, ¶ms);
9145 wdev_unlock(wdev);
9146
9147 return err;
9148 }
9149
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)9150 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9151 u32 seq, int flags,
9152 struct cfg80211_registered_device *rdev,
9153 struct wireless_dev *wdev,
9154 struct cfg80211_internal_bss *intbss)
9155 {
9156 struct cfg80211_bss *res = &intbss->pub;
9157 const struct cfg80211_bss_ies *ies;
9158 void *hdr;
9159 struct nlattr *bss;
9160
9161 ASSERT_WDEV_LOCK(wdev);
9162
9163 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9164 NL80211_CMD_NEW_SCAN_RESULTS);
9165 if (!hdr)
9166 return -1;
9167
9168 genl_dump_check_consistent(cb, hdr);
9169
9170 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9171 goto nla_put_failure;
9172 if (wdev->netdev &&
9173 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9174 goto nla_put_failure;
9175 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9176 NL80211_ATTR_PAD))
9177 goto nla_put_failure;
9178
9179 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9180 if (!bss)
9181 goto nla_put_failure;
9182 if ((!is_zero_ether_addr(res->bssid) &&
9183 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9184 goto nla_put_failure;
9185
9186 rcu_read_lock();
9187 /* indicate whether we have probe response data or not */
9188 if (rcu_access_pointer(res->proberesp_ies) &&
9189 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9190 goto fail_unlock_rcu;
9191
9192 /* this pointer prefers to be pointed to probe response data
9193 * but is always valid
9194 */
9195 ies = rcu_dereference(res->ies);
9196 if (ies) {
9197 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9198 NL80211_BSS_PAD))
9199 goto fail_unlock_rcu;
9200 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9201 ies->len, ies->data))
9202 goto fail_unlock_rcu;
9203 }
9204
9205 /* and this pointer is always (unless driver didn't know) beacon data */
9206 ies = rcu_dereference(res->beacon_ies);
9207 if (ies && ies->from_beacon) {
9208 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9209 NL80211_BSS_PAD))
9210 goto fail_unlock_rcu;
9211 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9212 ies->len, ies->data))
9213 goto fail_unlock_rcu;
9214 }
9215 rcu_read_unlock();
9216
9217 if (res->beacon_interval &&
9218 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9219 goto nla_put_failure;
9220 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9221 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9222 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9223 res->channel->freq_offset) ||
9224 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9225 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9226 jiffies_to_msecs(jiffies - intbss->ts)))
9227 goto nla_put_failure;
9228
9229 if (intbss->parent_tsf &&
9230 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9231 intbss->parent_tsf, NL80211_BSS_PAD) ||
9232 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9233 intbss->parent_bssid)))
9234 goto nla_put_failure;
9235
9236 if (intbss->ts_boottime &&
9237 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9238 intbss->ts_boottime, NL80211_BSS_PAD))
9239 goto nla_put_failure;
9240
9241 if (!nl80211_put_signal(msg, intbss->pub.chains,
9242 intbss->pub.chain_signal,
9243 NL80211_BSS_CHAIN_SIGNAL))
9244 goto nla_put_failure;
9245
9246 switch (rdev->wiphy.signal_type) {
9247 case CFG80211_SIGNAL_TYPE_MBM:
9248 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9249 goto nla_put_failure;
9250 break;
9251 case CFG80211_SIGNAL_TYPE_UNSPEC:
9252 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9253 goto nla_put_failure;
9254 break;
9255 default:
9256 break;
9257 }
9258
9259 switch (wdev->iftype) {
9260 case NL80211_IFTYPE_P2P_CLIENT:
9261 case NL80211_IFTYPE_STATION:
9262 if (intbss == wdev->current_bss &&
9263 nla_put_u32(msg, NL80211_BSS_STATUS,
9264 NL80211_BSS_STATUS_ASSOCIATED))
9265 goto nla_put_failure;
9266 break;
9267 case NL80211_IFTYPE_ADHOC:
9268 if (intbss == wdev->current_bss &&
9269 nla_put_u32(msg, NL80211_BSS_STATUS,
9270 NL80211_BSS_STATUS_IBSS_JOINED))
9271 goto nla_put_failure;
9272 break;
9273 default:
9274 break;
9275 }
9276
9277 nla_nest_end(msg, bss);
9278
9279 genlmsg_end(msg, hdr);
9280 return 0;
9281
9282 fail_unlock_rcu:
9283 rcu_read_unlock();
9284 nla_put_failure:
9285 genlmsg_cancel(msg, hdr);
9286 return -EMSGSIZE;
9287 }
9288
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)9289 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9290 {
9291 struct cfg80211_registered_device *rdev;
9292 struct cfg80211_internal_bss *scan;
9293 struct wireless_dev *wdev;
9294 int start = cb->args[2], idx = 0;
9295 int err;
9296
9297 rtnl_lock();
9298 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9299 if (err) {
9300 rtnl_unlock();
9301 return err;
9302 }
9303
9304 wdev_lock(wdev);
9305 spin_lock_bh(&rdev->bss_lock);
9306
9307 /*
9308 * dump_scan will be called multiple times to break up the scan results
9309 * into multiple messages. It is unlikely that any more bss-es will be
9310 * expired after the first call, so only call only call this on the
9311 * first dump_scan invocation.
9312 */
9313 if (start == 0)
9314 cfg80211_bss_expire(rdev);
9315
9316 cb->seq = rdev->bss_generation;
9317
9318 list_for_each_entry(scan, &rdev->bss_list, list) {
9319 if (++idx <= start)
9320 continue;
9321 if (nl80211_send_bss(skb, cb,
9322 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9323 rdev, wdev, scan) < 0) {
9324 idx--;
9325 break;
9326 }
9327 }
9328
9329 spin_unlock_bh(&rdev->bss_lock);
9330 wdev_unlock(wdev);
9331
9332 cb->args[2] = idx;
9333 rtnl_unlock();
9334
9335 return skb->len;
9336 }
9337
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)9338 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9339 int flags, struct net_device *dev,
9340 bool allow_radio_stats,
9341 struct survey_info *survey)
9342 {
9343 void *hdr;
9344 struct nlattr *infoattr;
9345
9346 /* skip radio stats if userspace didn't request them */
9347 if (!survey->channel && !allow_radio_stats)
9348 return 0;
9349
9350 hdr = nl80211hdr_put(msg, portid, seq, flags,
9351 NL80211_CMD_NEW_SURVEY_RESULTS);
9352 if (!hdr)
9353 return -ENOMEM;
9354
9355 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9356 goto nla_put_failure;
9357
9358 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9359 if (!infoattr)
9360 goto nla_put_failure;
9361
9362 if (survey->channel &&
9363 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9364 survey->channel->center_freq))
9365 goto nla_put_failure;
9366
9367 if (survey->channel && survey->channel->freq_offset &&
9368 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9369 survey->channel->freq_offset))
9370 goto nla_put_failure;
9371
9372 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9373 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9374 goto nla_put_failure;
9375 if ((survey->filled & SURVEY_INFO_IN_USE) &&
9376 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9377 goto nla_put_failure;
9378 if ((survey->filled & SURVEY_INFO_TIME) &&
9379 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9380 survey->time, NL80211_SURVEY_INFO_PAD))
9381 goto nla_put_failure;
9382 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9383 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9384 survey->time_busy, NL80211_SURVEY_INFO_PAD))
9385 goto nla_put_failure;
9386 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9387 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9388 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9389 goto nla_put_failure;
9390 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9391 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9392 survey->time_rx, NL80211_SURVEY_INFO_PAD))
9393 goto nla_put_failure;
9394 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9395 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9396 survey->time_tx, NL80211_SURVEY_INFO_PAD))
9397 goto nla_put_failure;
9398 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9399 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9400 survey->time_scan, NL80211_SURVEY_INFO_PAD))
9401 goto nla_put_failure;
9402 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9403 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9404 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9405 goto nla_put_failure;
9406
9407 nla_nest_end(msg, infoattr);
9408
9409 genlmsg_end(msg, hdr);
9410 return 0;
9411
9412 nla_put_failure:
9413 genlmsg_cancel(msg, hdr);
9414 return -EMSGSIZE;
9415 }
9416
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)9417 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9418 {
9419 struct nlattr **attrbuf;
9420 struct survey_info survey;
9421 struct cfg80211_registered_device *rdev;
9422 struct wireless_dev *wdev;
9423 int survey_idx = cb->args[2];
9424 int res;
9425 bool radio_stats;
9426
9427 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9428 if (!attrbuf)
9429 return -ENOMEM;
9430
9431 rtnl_lock();
9432 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9433 if (res)
9434 goto out_err;
9435
9436 /* prepare_wdev_dump parsed the attributes */
9437 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9438
9439 if (!wdev->netdev) {
9440 res = -EINVAL;
9441 goto out_err;
9442 }
9443
9444 if (!rdev->ops->dump_survey) {
9445 res = -EOPNOTSUPP;
9446 goto out_err;
9447 }
9448
9449 while (1) {
9450 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9451 if (res == -ENOENT)
9452 break;
9453 if (res)
9454 goto out_err;
9455
9456 /* don't send disabled channels, but do send non-channel data */
9457 if (survey.channel &&
9458 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9459 survey_idx++;
9460 continue;
9461 }
9462
9463 if (nl80211_send_survey(skb,
9464 NETLINK_CB(cb->skb).portid,
9465 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9466 wdev->netdev, radio_stats, &survey) < 0)
9467 goto out;
9468 survey_idx++;
9469 }
9470
9471 out:
9472 cb->args[2] = survey_idx;
9473 res = skb->len;
9474 out_err:
9475 kfree(attrbuf);
9476 rtnl_unlock();
9477 return res;
9478 }
9479
nl80211_valid_wpa_versions(u32 wpa_versions)9480 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9481 {
9482 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9483 NL80211_WPA_VERSION_2 |
9484 NL80211_WPA_VERSION_3));
9485 }
9486
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)9487 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9488 {
9489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9490 struct net_device *dev = info->user_ptr[1];
9491 struct ieee80211_channel *chan;
9492 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9493 int err, ssid_len, ie_len = 0, auth_data_len = 0;
9494 enum nl80211_auth_type auth_type;
9495 struct key_parse key;
9496 bool local_state_change;
9497 u32 freq;
9498
9499 if (!info->attrs[NL80211_ATTR_MAC])
9500 return -EINVAL;
9501
9502 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9503 return -EINVAL;
9504
9505 if (!info->attrs[NL80211_ATTR_SSID])
9506 return -EINVAL;
9507
9508 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9509 return -EINVAL;
9510
9511 err = nl80211_parse_key(info, &key);
9512 if (err)
9513 return err;
9514
9515 if (key.idx >= 0) {
9516 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9517 return -EINVAL;
9518 if (!key.p.key || !key.p.key_len)
9519 return -EINVAL;
9520 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9521 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9522 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9523 key.p.key_len != WLAN_KEY_LEN_WEP104))
9524 return -EINVAL;
9525 if (key.idx > 3)
9526 return -EINVAL;
9527 } else {
9528 key.p.key_len = 0;
9529 key.p.key = NULL;
9530 }
9531
9532 if (key.idx >= 0) {
9533 int i;
9534 bool ok = false;
9535
9536 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9537 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9538 ok = true;
9539 break;
9540 }
9541 }
9542 if (!ok)
9543 return -EINVAL;
9544 }
9545
9546 if (!rdev->ops->auth)
9547 return -EOPNOTSUPP;
9548
9549 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9550 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9551 return -EOPNOTSUPP;
9552
9553 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9554 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9555 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9556 freq +=
9557 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9558
9559 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9560 if (!chan)
9561 return -EINVAL;
9562
9563 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9564 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9565
9566 if (info->attrs[NL80211_ATTR_IE]) {
9567 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9568 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9569 }
9570
9571 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9572 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9573 return -EINVAL;
9574
9575 if ((auth_type == NL80211_AUTHTYPE_SAE ||
9576 auth_type == NL80211_AUTHTYPE_FILS_SK ||
9577 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9578 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9579 !info->attrs[NL80211_ATTR_AUTH_DATA])
9580 return -EINVAL;
9581
9582 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9583 if (auth_type != NL80211_AUTHTYPE_SAE &&
9584 auth_type != NL80211_AUTHTYPE_FILS_SK &&
9585 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9586 auth_type != NL80211_AUTHTYPE_FILS_PK)
9587 return -EINVAL;
9588 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9589 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9590 }
9591
9592 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9593
9594 /*
9595 * Since we no longer track auth state, ignore
9596 * requests to only change local state.
9597 */
9598 if (local_state_change)
9599 return 0;
9600
9601 wdev_lock(dev->ieee80211_ptr);
9602 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9603 ssid, ssid_len, ie, ie_len,
9604 key.p.key, key.p.key_len, key.idx,
9605 auth_data, auth_data_len);
9606 wdev_unlock(dev->ieee80211_ptr);
9607 return err;
9608 }
9609
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)9610 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9611 struct genl_info *info)
9612 {
9613 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9614 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9615 return -EINVAL;
9616 }
9617
9618 if (!rdev->ops->tx_control_port ||
9619 !wiphy_ext_feature_isset(&rdev->wiphy,
9620 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9621 return -EOPNOTSUPP;
9622
9623 return 0;
9624 }
9625
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)9626 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9627 struct genl_info *info,
9628 struct cfg80211_crypto_settings *settings,
9629 int cipher_limit)
9630 {
9631 memset(settings, 0, sizeof(*settings));
9632
9633 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9634
9635 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9636 u16 proto;
9637
9638 proto = nla_get_u16(
9639 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9640 settings->control_port_ethertype = cpu_to_be16(proto);
9641 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9642 proto != ETH_P_PAE)
9643 return -EINVAL;
9644 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9645 settings->control_port_no_encrypt = true;
9646 } else
9647 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9648
9649 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9650 int r = validate_pae_over_nl80211(rdev, info);
9651
9652 if (r < 0)
9653 return r;
9654
9655 settings->control_port_over_nl80211 = true;
9656
9657 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9658 settings->control_port_no_preauth = true;
9659 }
9660
9661 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9662 void *data;
9663 int len, i;
9664
9665 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9666 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9667 settings->n_ciphers_pairwise = len / sizeof(u32);
9668
9669 if (len % sizeof(u32))
9670 return -EINVAL;
9671
9672 if (settings->n_ciphers_pairwise > cipher_limit)
9673 return -EINVAL;
9674
9675 memcpy(settings->ciphers_pairwise, data, len);
9676
9677 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9678 if (!cfg80211_supported_cipher_suite(
9679 &rdev->wiphy,
9680 settings->ciphers_pairwise[i]))
9681 return -EINVAL;
9682 }
9683
9684 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9685 settings->cipher_group =
9686 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9687 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9688 settings->cipher_group))
9689 return -EINVAL;
9690 }
9691
9692 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9693 settings->wpa_versions =
9694 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9695 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9696 return -EINVAL;
9697 }
9698
9699 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9700 void *data;
9701 int len;
9702
9703 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9704 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9705 settings->n_akm_suites = len / sizeof(u32);
9706
9707 if (len % sizeof(u32))
9708 return -EINVAL;
9709
9710 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9711 return -EINVAL;
9712
9713 memcpy(settings->akm_suites, data, len);
9714 }
9715
9716 if (info->attrs[NL80211_ATTR_PMK]) {
9717 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9718 return -EINVAL;
9719 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9720 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9721 !wiphy_ext_feature_isset(&rdev->wiphy,
9722 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9723 return -EINVAL;
9724 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9725 }
9726
9727 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9728 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9729 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9730 !wiphy_ext_feature_isset(&rdev->wiphy,
9731 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9732 return -EINVAL;
9733 settings->sae_pwd =
9734 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9735 settings->sae_pwd_len =
9736 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9737 }
9738
9739 return 0;
9740 }
9741
nl80211_associate(struct sk_buff * skb,struct genl_info * info)9742 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9743 {
9744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9745 struct net_device *dev = info->user_ptr[1];
9746 struct ieee80211_channel *chan;
9747 struct cfg80211_assoc_request req = {};
9748 const u8 *bssid, *ssid;
9749 int err, ssid_len = 0;
9750 u32 freq;
9751
9752 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9753 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9754 return -EPERM;
9755
9756 if (!info->attrs[NL80211_ATTR_MAC] ||
9757 !info->attrs[NL80211_ATTR_SSID] ||
9758 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9759 return -EINVAL;
9760
9761 if (!rdev->ops->assoc)
9762 return -EOPNOTSUPP;
9763
9764 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9765 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9766 return -EOPNOTSUPP;
9767
9768 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9769
9770 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9771 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9772 freq +=
9773 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9774 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9775 if (!chan)
9776 return -EINVAL;
9777
9778 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9779 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9780
9781 if (info->attrs[NL80211_ATTR_IE]) {
9782 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9783 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9784 }
9785
9786 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9787 enum nl80211_mfp mfp =
9788 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9789 if (mfp == NL80211_MFP_REQUIRED)
9790 req.use_mfp = true;
9791 else if (mfp != NL80211_MFP_NO)
9792 return -EINVAL;
9793 }
9794
9795 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9796 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9797
9798 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9799 req.flags |= ASSOC_REQ_DISABLE_HT;
9800
9801 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9802 memcpy(&req.ht_capa_mask,
9803 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9804 sizeof(req.ht_capa_mask));
9805
9806 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9807 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9808 return -EINVAL;
9809 memcpy(&req.ht_capa,
9810 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9811 sizeof(req.ht_capa));
9812 }
9813
9814 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9815 req.flags |= ASSOC_REQ_DISABLE_VHT;
9816
9817 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9818 memcpy(&req.vht_capa_mask,
9819 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9820 sizeof(req.vht_capa_mask));
9821
9822 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9823 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9824 return -EINVAL;
9825 memcpy(&req.vht_capa,
9826 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9827 sizeof(req.vht_capa));
9828 }
9829
9830 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9831 if (!((rdev->wiphy.features &
9832 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9833 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9834 !wiphy_ext_feature_isset(&rdev->wiphy,
9835 NL80211_EXT_FEATURE_RRM))
9836 return -EINVAL;
9837 req.flags |= ASSOC_REQ_USE_RRM;
9838 }
9839
9840 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9841 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9842 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9843 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9844 return -EINVAL;
9845 req.fils_nonces =
9846 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9847 }
9848
9849 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9850 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9851 return -EINVAL;
9852 memcpy(&req.s1g_capa_mask,
9853 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9854 sizeof(req.s1g_capa_mask));
9855 }
9856
9857 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9858 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9859 return -EINVAL;
9860 memcpy(&req.s1g_capa,
9861 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9862 sizeof(req.s1g_capa));
9863 }
9864
9865 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9866 if (!err) {
9867 wdev_lock(dev->ieee80211_ptr);
9868
9869 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9870 ssid, ssid_len, &req);
9871
9872 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9873 dev->ieee80211_ptr->conn_owner_nlportid =
9874 info->snd_portid;
9875 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9876 bssid, ETH_ALEN);
9877 }
9878
9879 wdev_unlock(dev->ieee80211_ptr);
9880 }
9881
9882 return err;
9883 }
9884
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)9885 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9886 {
9887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9888 struct net_device *dev = info->user_ptr[1];
9889 const u8 *ie = NULL, *bssid;
9890 int ie_len = 0, err;
9891 u16 reason_code;
9892 bool local_state_change;
9893
9894 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9895 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9896 return -EPERM;
9897
9898 if (!info->attrs[NL80211_ATTR_MAC])
9899 return -EINVAL;
9900
9901 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9902 return -EINVAL;
9903
9904 if (!rdev->ops->deauth)
9905 return -EOPNOTSUPP;
9906
9907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9908 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9909 return -EOPNOTSUPP;
9910
9911 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9912
9913 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9914 if (reason_code == 0) {
9915 /* Reason Code 0 is reserved */
9916 return -EINVAL;
9917 }
9918
9919 if (info->attrs[NL80211_ATTR_IE]) {
9920 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9921 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9922 }
9923
9924 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9925
9926 wdev_lock(dev->ieee80211_ptr);
9927 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9928 local_state_change);
9929 wdev_unlock(dev->ieee80211_ptr);
9930 return err;
9931 }
9932
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)9933 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9934 {
9935 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9936 struct net_device *dev = info->user_ptr[1];
9937 const u8 *ie = NULL, *bssid;
9938 int ie_len = 0, err;
9939 u16 reason_code;
9940 bool local_state_change;
9941
9942 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9943 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9944 return -EPERM;
9945
9946 if (!info->attrs[NL80211_ATTR_MAC])
9947 return -EINVAL;
9948
9949 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9950 return -EINVAL;
9951
9952 if (!rdev->ops->disassoc)
9953 return -EOPNOTSUPP;
9954
9955 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9956 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9957 return -EOPNOTSUPP;
9958
9959 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9960
9961 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9962 if (reason_code == 0) {
9963 /* Reason Code 0 is reserved */
9964 return -EINVAL;
9965 }
9966
9967 if (info->attrs[NL80211_ATTR_IE]) {
9968 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9969 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9970 }
9971
9972 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9973
9974 wdev_lock(dev->ieee80211_ptr);
9975 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9976 local_state_change);
9977 wdev_unlock(dev->ieee80211_ptr);
9978 return err;
9979 }
9980
9981 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)9982 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9983 int mcast_rate[NUM_NL80211_BANDS],
9984 int rateval)
9985 {
9986 struct wiphy *wiphy = &rdev->wiphy;
9987 bool found = false;
9988 int band, i;
9989
9990 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9991 struct ieee80211_supported_band *sband;
9992
9993 sband = wiphy->bands[band];
9994 if (!sband)
9995 continue;
9996
9997 for (i = 0; i < sband->n_bitrates; i++) {
9998 if (sband->bitrates[i].bitrate == rateval) {
9999 mcast_rate[band] = i + 1;
10000 found = true;
10001 break;
10002 }
10003 }
10004 }
10005
10006 return found;
10007 }
10008
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)10009 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10010 {
10011 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10012 struct net_device *dev = info->user_ptr[1];
10013 struct cfg80211_ibss_params ibss;
10014 struct wiphy *wiphy;
10015 struct cfg80211_cached_keys *connkeys = NULL;
10016 int err;
10017
10018 memset(&ibss, 0, sizeof(ibss));
10019
10020 if (!info->attrs[NL80211_ATTR_SSID] ||
10021 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10022 return -EINVAL;
10023
10024 ibss.beacon_interval = 100;
10025
10026 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10027 ibss.beacon_interval =
10028 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10029
10030 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10031 ibss.beacon_interval);
10032 if (err)
10033 return err;
10034
10035 if (!rdev->ops->join_ibss)
10036 return -EOPNOTSUPP;
10037
10038 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10039 return -EOPNOTSUPP;
10040
10041 wiphy = &rdev->wiphy;
10042
10043 if (info->attrs[NL80211_ATTR_MAC]) {
10044 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10045
10046 if (!is_valid_ether_addr(ibss.bssid))
10047 return -EINVAL;
10048 }
10049 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10050 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10051
10052 if (info->attrs[NL80211_ATTR_IE]) {
10053 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10054 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10055 }
10056
10057 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10058 if (err)
10059 return err;
10060
10061 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10062 NL80211_IFTYPE_ADHOC))
10063 return -EINVAL;
10064
10065 switch (ibss.chandef.width) {
10066 case NL80211_CHAN_WIDTH_5:
10067 case NL80211_CHAN_WIDTH_10:
10068 case NL80211_CHAN_WIDTH_20_NOHT:
10069 break;
10070 case NL80211_CHAN_WIDTH_20:
10071 case NL80211_CHAN_WIDTH_40:
10072 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10073 return -EINVAL;
10074 break;
10075 case NL80211_CHAN_WIDTH_80:
10076 case NL80211_CHAN_WIDTH_80P80:
10077 case NL80211_CHAN_WIDTH_160:
10078 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10079 return -EINVAL;
10080 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10081 NL80211_EXT_FEATURE_VHT_IBSS))
10082 return -EINVAL;
10083 break;
10084 default:
10085 return -EINVAL;
10086 }
10087
10088 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10089 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10090
10091 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10092 u8 *rates =
10093 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10094 int n_rates =
10095 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10096 struct ieee80211_supported_band *sband =
10097 wiphy->bands[ibss.chandef.chan->band];
10098
10099 err = ieee80211_get_ratemask(sband, rates, n_rates,
10100 &ibss.basic_rates);
10101 if (err)
10102 return err;
10103 }
10104
10105 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10106 memcpy(&ibss.ht_capa_mask,
10107 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10108 sizeof(ibss.ht_capa_mask));
10109
10110 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10111 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10112 return -EINVAL;
10113 memcpy(&ibss.ht_capa,
10114 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10115 sizeof(ibss.ht_capa));
10116 }
10117
10118 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10119 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10120 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10121 return -EINVAL;
10122
10123 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10124 bool no_ht = false;
10125
10126 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10127 if (IS_ERR(connkeys))
10128 return PTR_ERR(connkeys);
10129
10130 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10131 no_ht) {
10132 kfree_sensitive(connkeys);
10133 return -EINVAL;
10134 }
10135 }
10136
10137 ibss.control_port =
10138 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10139
10140 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10141 int r = validate_pae_over_nl80211(rdev, info);
10142
10143 if (r < 0) {
10144 kfree_sensitive(connkeys);
10145 return r;
10146 }
10147
10148 ibss.control_port_over_nl80211 = true;
10149 }
10150
10151 ibss.userspace_handles_dfs =
10152 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10153
10154 wdev_lock(dev->ieee80211_ptr);
10155 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10156 if (err)
10157 kfree_sensitive(connkeys);
10158 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10159 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10160 wdev_unlock(dev->ieee80211_ptr);
10161
10162 return err;
10163 }
10164
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)10165 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10166 {
10167 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10168 struct net_device *dev = info->user_ptr[1];
10169
10170 if (!rdev->ops->leave_ibss)
10171 return -EOPNOTSUPP;
10172
10173 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10174 return -EOPNOTSUPP;
10175
10176 return cfg80211_leave_ibss(rdev, dev, false);
10177 }
10178
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)10179 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10180 {
10181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10182 struct net_device *dev = info->user_ptr[1];
10183 int mcast_rate[NUM_NL80211_BANDS];
10184 u32 nla_rate;
10185 int err;
10186
10187 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10188 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10190 return -EOPNOTSUPP;
10191
10192 if (!rdev->ops->set_mcast_rate)
10193 return -EOPNOTSUPP;
10194
10195 memset(mcast_rate, 0, sizeof(mcast_rate));
10196
10197 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10198 return -EINVAL;
10199
10200 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10201 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10202 return -EINVAL;
10203
10204 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10205
10206 return err;
10207 }
10208
10209 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)10210 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10211 struct wireless_dev *wdev, int approxlen,
10212 u32 portid, u32 seq, enum nl80211_commands cmd,
10213 enum nl80211_attrs attr,
10214 const struct nl80211_vendor_cmd_info *info,
10215 gfp_t gfp)
10216 {
10217 struct sk_buff *skb;
10218 void *hdr;
10219 struct nlattr *data;
10220
10221 skb = nlmsg_new(approxlen + 100, gfp);
10222 if (!skb)
10223 return NULL;
10224
10225 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10226 if (!hdr) {
10227 kfree_skb(skb);
10228 return NULL;
10229 }
10230
10231 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10232 goto nla_put_failure;
10233
10234 if (info) {
10235 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10236 info->vendor_id))
10237 goto nla_put_failure;
10238 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10239 info->subcmd))
10240 goto nla_put_failure;
10241 }
10242
10243 if (wdev) {
10244 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10245 wdev_id(wdev), NL80211_ATTR_PAD))
10246 goto nla_put_failure;
10247 if (wdev->netdev &&
10248 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10249 wdev->netdev->ifindex))
10250 goto nla_put_failure;
10251 }
10252
10253 data = nla_nest_start_noflag(skb, attr);
10254 if (!data)
10255 goto nla_put_failure;
10256
10257 ((void **)skb->cb)[0] = rdev;
10258 ((void **)skb->cb)[1] = hdr;
10259 ((void **)skb->cb)[2] = data;
10260
10261 return skb;
10262
10263 nla_put_failure:
10264 kfree_skb(skb);
10265 return NULL;
10266 }
10267
__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)10268 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10269 struct wireless_dev *wdev,
10270 enum nl80211_commands cmd,
10271 enum nl80211_attrs attr,
10272 unsigned int portid,
10273 int vendor_event_idx,
10274 int approxlen, gfp_t gfp)
10275 {
10276 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10277 const struct nl80211_vendor_cmd_info *info;
10278
10279 switch (cmd) {
10280 case NL80211_CMD_TESTMODE:
10281 if (WARN_ON(vendor_event_idx != -1))
10282 return NULL;
10283 info = NULL;
10284 break;
10285 case NL80211_CMD_VENDOR:
10286 if (WARN_ON(vendor_event_idx < 0 ||
10287 vendor_event_idx >= wiphy->n_vendor_events))
10288 return NULL;
10289 info = &wiphy->vendor_events[vendor_event_idx];
10290 break;
10291 default:
10292 WARN_ON(1);
10293 return NULL;
10294 }
10295
10296 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10297 cmd, attr, info, gfp);
10298 }
10299 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10300
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)10301 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10302 {
10303 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10304 void *hdr = ((void **)skb->cb)[1];
10305 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10306 struct nlattr *data = ((void **)skb->cb)[2];
10307 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10308
10309 /* clear CB data for netlink core to own from now on */
10310 memset(skb->cb, 0, sizeof(skb->cb));
10311
10312 nla_nest_end(skb, data);
10313 genlmsg_end(skb, hdr);
10314
10315 if (nlhdr->nlmsg_pid) {
10316 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10317 nlhdr->nlmsg_pid);
10318 } else {
10319 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10320 mcgrp = NL80211_MCGRP_VENDOR;
10321
10322 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10323 skb, 0, mcgrp, gfp);
10324 }
10325 }
10326 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10327
10328 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)10329 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10330 {
10331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10332 struct wireless_dev *wdev =
10333 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10334 int err;
10335
10336 if (!rdev->ops->testmode_cmd)
10337 return -EOPNOTSUPP;
10338
10339 if (IS_ERR(wdev)) {
10340 err = PTR_ERR(wdev);
10341 if (err != -EINVAL)
10342 return err;
10343 wdev = NULL;
10344 } else if (wdev->wiphy != &rdev->wiphy) {
10345 return -EINVAL;
10346 }
10347
10348 if (!info->attrs[NL80211_ATTR_TESTDATA])
10349 return -EINVAL;
10350
10351 rdev->cur_cmd_info = info;
10352 err = rdev_testmode_cmd(rdev, wdev,
10353 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10354 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10355 rdev->cur_cmd_info = NULL;
10356
10357 return err;
10358 }
10359
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)10360 static int nl80211_testmode_dump(struct sk_buff *skb,
10361 struct netlink_callback *cb)
10362 {
10363 struct cfg80211_registered_device *rdev;
10364 struct nlattr **attrbuf = NULL;
10365 int err;
10366 long phy_idx;
10367 void *data = NULL;
10368 int data_len = 0;
10369
10370 rtnl_lock();
10371
10372 if (cb->args[0]) {
10373 /*
10374 * 0 is a valid index, but not valid for args[0],
10375 * so we need to offset by 1.
10376 */
10377 phy_idx = cb->args[0] - 1;
10378
10379 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10380 if (!rdev) {
10381 err = -ENOENT;
10382 goto out_err;
10383 }
10384 } else {
10385 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10386 GFP_KERNEL);
10387 if (!attrbuf) {
10388 err = -ENOMEM;
10389 goto out_err;
10390 }
10391
10392 err = nlmsg_parse_deprecated(cb->nlh,
10393 GENL_HDRLEN + nl80211_fam.hdrsize,
10394 attrbuf, nl80211_fam.maxattr,
10395 nl80211_policy, NULL);
10396 if (err)
10397 goto out_err;
10398
10399 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10400 if (IS_ERR(rdev)) {
10401 err = PTR_ERR(rdev);
10402 goto out_err;
10403 }
10404 phy_idx = rdev->wiphy_idx;
10405
10406 if (attrbuf[NL80211_ATTR_TESTDATA])
10407 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10408 }
10409
10410 if (cb->args[1]) {
10411 data = nla_data((void *)cb->args[1]);
10412 data_len = nla_len((void *)cb->args[1]);
10413 }
10414
10415 if (!rdev->ops->testmode_dump) {
10416 err = -EOPNOTSUPP;
10417 goto out_err;
10418 }
10419
10420 while (1) {
10421 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10422 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10423 NL80211_CMD_TESTMODE);
10424 struct nlattr *tmdata;
10425
10426 if (!hdr)
10427 break;
10428
10429 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10430 genlmsg_cancel(skb, hdr);
10431 break;
10432 }
10433
10434 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10435 if (!tmdata) {
10436 genlmsg_cancel(skb, hdr);
10437 break;
10438 }
10439 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10440 nla_nest_end(skb, tmdata);
10441
10442 if (err == -ENOBUFS || err == -ENOENT) {
10443 genlmsg_cancel(skb, hdr);
10444 break;
10445 } else if (err) {
10446 genlmsg_cancel(skb, hdr);
10447 goto out_err;
10448 }
10449
10450 genlmsg_end(skb, hdr);
10451 }
10452
10453 err = skb->len;
10454 /* see above */
10455 cb->args[0] = phy_idx + 1;
10456 out_err:
10457 kfree(attrbuf);
10458 rtnl_unlock();
10459 return err;
10460 }
10461 #endif
10462
nl80211_connect(struct sk_buff * skb,struct genl_info * info)10463 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10464 {
10465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10466 struct net_device *dev = info->user_ptr[1];
10467 struct cfg80211_connect_params connect;
10468 struct wiphy *wiphy;
10469 struct cfg80211_cached_keys *connkeys = NULL;
10470 u32 freq = 0;
10471 int err;
10472
10473 memset(&connect, 0, sizeof(connect));
10474
10475 if (!info->attrs[NL80211_ATTR_SSID] ||
10476 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10477 return -EINVAL;
10478
10479 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10480 connect.auth_type =
10481 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10482 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10483 NL80211_CMD_CONNECT))
10484 return -EINVAL;
10485 } else
10486 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10487
10488 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10489
10490 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10491 !wiphy_ext_feature_isset(&rdev->wiphy,
10492 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10493 return -EINVAL;
10494 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10495
10496 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10497 NL80211_MAX_NR_CIPHER_SUITES);
10498 if (err)
10499 return err;
10500
10501 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10502 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10503 return -EOPNOTSUPP;
10504
10505 wiphy = &rdev->wiphy;
10506
10507 connect.bg_scan_period = -1;
10508 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10509 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10510 connect.bg_scan_period =
10511 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10512 }
10513
10514 if (info->attrs[NL80211_ATTR_MAC])
10515 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10516 else if (info->attrs[NL80211_ATTR_MAC_HINT])
10517 connect.bssid_hint =
10518 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10519 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10520 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10521
10522 if (info->attrs[NL80211_ATTR_IE]) {
10523 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10524 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10525 }
10526
10527 if (info->attrs[NL80211_ATTR_USE_MFP]) {
10528 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10529 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10530 !wiphy_ext_feature_isset(&rdev->wiphy,
10531 NL80211_EXT_FEATURE_MFP_OPTIONAL))
10532 return -EOPNOTSUPP;
10533 } else {
10534 connect.mfp = NL80211_MFP_NO;
10535 }
10536
10537 if (info->attrs[NL80211_ATTR_PREV_BSSID])
10538 connect.prev_bssid =
10539 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10540
10541 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10542 freq = MHZ_TO_KHZ(nla_get_u32(
10543 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10544 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10545 freq +=
10546 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10547
10548 if (freq) {
10549 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10550 if (!connect.channel)
10551 return -EINVAL;
10552 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10553 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10554 freq = MHZ_TO_KHZ(freq);
10555 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10556 if (!connect.channel_hint)
10557 return -EINVAL;
10558 }
10559
10560 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10561 connect.edmg.channels =
10562 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10563
10564 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10565 connect.edmg.bw_config =
10566 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10567 }
10568
10569 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10570 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10571 if (IS_ERR(connkeys))
10572 return PTR_ERR(connkeys);
10573 }
10574
10575 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10576 connect.flags |= ASSOC_REQ_DISABLE_HT;
10577
10578 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10579 memcpy(&connect.ht_capa_mask,
10580 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10581 sizeof(connect.ht_capa_mask));
10582
10583 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10584 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10585 kfree_sensitive(connkeys);
10586 return -EINVAL;
10587 }
10588 memcpy(&connect.ht_capa,
10589 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10590 sizeof(connect.ht_capa));
10591 }
10592
10593 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10594 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10595
10596 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10597 memcpy(&connect.vht_capa_mask,
10598 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10599 sizeof(connect.vht_capa_mask));
10600
10601 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10602 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10603 kfree_sensitive(connkeys);
10604 return -EINVAL;
10605 }
10606 memcpy(&connect.vht_capa,
10607 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10608 sizeof(connect.vht_capa));
10609 }
10610
10611 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10612 if (!((rdev->wiphy.features &
10613 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10614 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10615 !wiphy_ext_feature_isset(&rdev->wiphy,
10616 NL80211_EXT_FEATURE_RRM)) {
10617 kfree_sensitive(connkeys);
10618 return -EINVAL;
10619 }
10620 connect.flags |= ASSOC_REQ_USE_RRM;
10621 }
10622
10623 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10624 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10625 kfree_sensitive(connkeys);
10626 return -EOPNOTSUPP;
10627 }
10628
10629 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10630 /* bss selection makes no sense if bssid is set */
10631 if (connect.bssid) {
10632 kfree_sensitive(connkeys);
10633 return -EINVAL;
10634 }
10635
10636 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10637 wiphy, &connect.bss_select);
10638 if (err) {
10639 kfree_sensitive(connkeys);
10640 return err;
10641 }
10642 }
10643
10644 if (wiphy_ext_feature_isset(&rdev->wiphy,
10645 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10646 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10647 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10648 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10649 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10650 connect.fils_erp_username =
10651 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10652 connect.fils_erp_username_len =
10653 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10654 connect.fils_erp_realm =
10655 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10656 connect.fils_erp_realm_len =
10657 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10658 connect.fils_erp_next_seq_num =
10659 nla_get_u16(
10660 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10661 connect.fils_erp_rrk =
10662 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10663 connect.fils_erp_rrk_len =
10664 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10665 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10666 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10667 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10668 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10669 kfree_sensitive(connkeys);
10670 return -EINVAL;
10671 }
10672
10673 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10674 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10675 kfree_sensitive(connkeys);
10676 GENL_SET_ERR_MSG(info,
10677 "external auth requires connection ownership");
10678 return -EINVAL;
10679 }
10680 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10681 }
10682
10683 wdev_lock(dev->ieee80211_ptr);
10684
10685 err = cfg80211_connect(rdev, dev, &connect, connkeys,
10686 connect.prev_bssid);
10687 if (err)
10688 kfree_sensitive(connkeys);
10689
10690 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10691 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10692 if (connect.bssid)
10693 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10694 connect.bssid, ETH_ALEN);
10695 else
10696 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10697 }
10698
10699 wdev_unlock(dev->ieee80211_ptr);
10700
10701 return err;
10702 }
10703
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)10704 static int nl80211_update_connect_params(struct sk_buff *skb,
10705 struct genl_info *info)
10706 {
10707 struct cfg80211_connect_params connect = {};
10708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10709 struct net_device *dev = info->user_ptr[1];
10710 struct wireless_dev *wdev = dev->ieee80211_ptr;
10711 bool fils_sk_offload;
10712 u32 auth_type;
10713 u32 changed = 0;
10714 int ret;
10715
10716 if (!rdev->ops->update_connect_params)
10717 return -EOPNOTSUPP;
10718
10719 if (info->attrs[NL80211_ATTR_IE]) {
10720 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10721 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10722 changed |= UPDATE_ASSOC_IES;
10723 }
10724
10725 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10726 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10727
10728 /*
10729 * when driver supports fils-sk offload all attributes must be
10730 * provided. So the else covers "fils-sk-not-all" and
10731 * "no-fils-sk-any".
10732 */
10733 if (fils_sk_offload &&
10734 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10735 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10736 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10737 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10738 connect.fils_erp_username =
10739 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10740 connect.fils_erp_username_len =
10741 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10742 connect.fils_erp_realm =
10743 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10744 connect.fils_erp_realm_len =
10745 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10746 connect.fils_erp_next_seq_num =
10747 nla_get_u16(
10748 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10749 connect.fils_erp_rrk =
10750 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10751 connect.fils_erp_rrk_len =
10752 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10753 changed |= UPDATE_FILS_ERP_INFO;
10754 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10755 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10756 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10757 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10758 return -EINVAL;
10759 }
10760
10761 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10762 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10763 if (!nl80211_valid_auth_type(rdev, auth_type,
10764 NL80211_CMD_CONNECT))
10765 return -EINVAL;
10766
10767 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10768 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10769 return -EINVAL;
10770
10771 connect.auth_type = auth_type;
10772 changed |= UPDATE_AUTH_TYPE;
10773 }
10774
10775 wdev_lock(dev->ieee80211_ptr);
10776 if (!wdev->current_bss)
10777 ret = -ENOLINK;
10778 else
10779 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10780 wdev_unlock(dev->ieee80211_ptr);
10781
10782 return ret;
10783 }
10784
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)10785 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10786 {
10787 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10788 struct net_device *dev = info->user_ptr[1];
10789 u16 reason;
10790 int ret;
10791
10792 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10793 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10794 return -EPERM;
10795
10796 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10797 reason = WLAN_REASON_DEAUTH_LEAVING;
10798 else
10799 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10800
10801 if (reason == 0)
10802 return -EINVAL;
10803
10804 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10805 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10806 return -EOPNOTSUPP;
10807
10808 wdev_lock(dev->ieee80211_ptr);
10809 ret = cfg80211_disconnect(rdev, dev, reason, true);
10810 wdev_unlock(dev->ieee80211_ptr);
10811 return ret;
10812 }
10813
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)10814 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10815 {
10816 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10817 struct net *net;
10818 int err;
10819
10820 if (info->attrs[NL80211_ATTR_PID]) {
10821 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10822
10823 net = get_net_ns_by_pid(pid);
10824 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10825 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10826
10827 net = get_net_ns_by_fd(fd);
10828 } else {
10829 return -EINVAL;
10830 }
10831
10832 if (IS_ERR(net))
10833 return PTR_ERR(net);
10834
10835 err = 0;
10836
10837 /* check if anything to do */
10838 if (!net_eq(wiphy_net(&rdev->wiphy), net))
10839 err = cfg80211_switch_netns(rdev, net);
10840
10841 put_net(net);
10842 return err;
10843 }
10844
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)10845 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10846 {
10847 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10848 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10849 struct cfg80211_pmksa *pmksa) = NULL;
10850 struct net_device *dev = info->user_ptr[1];
10851 struct cfg80211_pmksa pmksa;
10852
10853 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10854
10855 if (!info->attrs[NL80211_ATTR_PMKID])
10856 return -EINVAL;
10857
10858 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10859
10860 if (info->attrs[NL80211_ATTR_MAC]) {
10861 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10862 } else if (info->attrs[NL80211_ATTR_SSID] &&
10863 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10864 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10865 info->attrs[NL80211_ATTR_PMK])) {
10866 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10867 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10868 pmksa.cache_id =
10869 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10870 } else {
10871 return -EINVAL;
10872 }
10873 if (info->attrs[NL80211_ATTR_PMK]) {
10874 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10875 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10876 }
10877
10878 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10879 pmksa.pmk_lifetime =
10880 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10881
10882 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10883 pmksa.pmk_reauth_threshold =
10884 nla_get_u8(
10885 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10886
10887 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10888 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10889 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10890 wiphy_ext_feature_isset(&rdev->wiphy,
10891 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10892 return -EOPNOTSUPP;
10893
10894 switch (info->genlhdr->cmd) {
10895 case NL80211_CMD_SET_PMKSA:
10896 rdev_ops = rdev->ops->set_pmksa;
10897 break;
10898 case NL80211_CMD_DEL_PMKSA:
10899 rdev_ops = rdev->ops->del_pmksa;
10900 break;
10901 default:
10902 WARN_ON(1);
10903 break;
10904 }
10905
10906 if (!rdev_ops)
10907 return -EOPNOTSUPP;
10908
10909 return rdev_ops(&rdev->wiphy, dev, &pmksa);
10910 }
10911
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)10912 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10913 {
10914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10915 struct net_device *dev = info->user_ptr[1];
10916
10917 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10918 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10919 return -EOPNOTSUPP;
10920
10921 if (!rdev->ops->flush_pmksa)
10922 return -EOPNOTSUPP;
10923
10924 return rdev_flush_pmksa(rdev, dev);
10925 }
10926
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)10927 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10928 {
10929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10930 struct net_device *dev = info->user_ptr[1];
10931 u8 action_code, dialog_token;
10932 u32 peer_capability = 0;
10933 u16 status_code;
10934 u8 *peer;
10935 bool initiator;
10936
10937 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10938 !rdev->ops->tdls_mgmt)
10939 return -EOPNOTSUPP;
10940
10941 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10942 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10943 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10944 !info->attrs[NL80211_ATTR_IE] ||
10945 !info->attrs[NL80211_ATTR_MAC])
10946 return -EINVAL;
10947
10948 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10949 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10950 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10951 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10952 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10953 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10954 peer_capability =
10955 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10956
10957 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10958 dialog_token, status_code, peer_capability,
10959 initiator,
10960 nla_data(info->attrs[NL80211_ATTR_IE]),
10961 nla_len(info->attrs[NL80211_ATTR_IE]));
10962 }
10963
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)10964 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10965 {
10966 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10967 struct net_device *dev = info->user_ptr[1];
10968 enum nl80211_tdls_operation operation;
10969 u8 *peer;
10970
10971 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10972 !rdev->ops->tdls_oper)
10973 return -EOPNOTSUPP;
10974
10975 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10976 !info->attrs[NL80211_ATTR_MAC])
10977 return -EINVAL;
10978
10979 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10980 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10981
10982 return rdev_tdls_oper(rdev, dev, peer, operation);
10983 }
10984
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)10985 static int nl80211_remain_on_channel(struct sk_buff *skb,
10986 struct genl_info *info)
10987 {
10988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10989 struct wireless_dev *wdev = info->user_ptr[1];
10990 struct cfg80211_chan_def chandef;
10991 const struct cfg80211_chan_def *compat_chandef;
10992 struct sk_buff *msg;
10993 void *hdr;
10994 u64 cookie;
10995 u32 duration;
10996 int err;
10997
10998 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10999 !info->attrs[NL80211_ATTR_DURATION])
11000 return -EINVAL;
11001
11002 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11003
11004 if (!rdev->ops->remain_on_channel ||
11005 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11006 return -EOPNOTSUPP;
11007
11008 /*
11009 * We should be on that channel for at least a minimum amount of
11010 * time (10ms) but no longer than the driver supports.
11011 */
11012 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11013 duration > rdev->wiphy.max_remain_on_channel_duration)
11014 return -EINVAL;
11015
11016 err = nl80211_parse_chandef(rdev, info, &chandef);
11017 if (err)
11018 return err;
11019
11020 wdev_lock(wdev);
11021 if (!cfg80211_off_channel_oper_allowed(wdev) &&
11022 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11023 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11024 &chandef);
11025 if (compat_chandef != &chandef) {
11026 wdev_unlock(wdev);
11027 return -EBUSY;
11028 }
11029 }
11030 wdev_unlock(wdev);
11031
11032 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11033 if (!msg)
11034 return -ENOMEM;
11035
11036 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11037 NL80211_CMD_REMAIN_ON_CHANNEL);
11038 if (!hdr) {
11039 err = -ENOBUFS;
11040 goto free_msg;
11041 }
11042
11043 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11044 duration, &cookie);
11045
11046 if (err)
11047 goto free_msg;
11048
11049 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11050 NL80211_ATTR_PAD))
11051 goto nla_put_failure;
11052
11053 genlmsg_end(msg, hdr);
11054
11055 return genlmsg_reply(msg, info);
11056
11057 nla_put_failure:
11058 err = -ENOBUFS;
11059 free_msg:
11060 nlmsg_free(msg);
11061 return err;
11062 }
11063
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)11064 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11065 struct genl_info *info)
11066 {
11067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11068 struct wireless_dev *wdev = info->user_ptr[1];
11069 u64 cookie;
11070
11071 if (!info->attrs[NL80211_ATTR_COOKIE])
11072 return -EINVAL;
11073
11074 if (!rdev->ops->cancel_remain_on_channel)
11075 return -EOPNOTSUPP;
11076
11077 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11078
11079 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11080 }
11081
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)11082 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11083 struct genl_info *info)
11084 {
11085 struct cfg80211_bitrate_mask mask;
11086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11087 struct net_device *dev = info->user_ptr[1];
11088 int err;
11089
11090 if (!rdev->ops->set_bitrate_mask)
11091 return -EOPNOTSUPP;
11092
11093 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11094 NL80211_ATTR_TX_RATES, &mask,
11095 dev);
11096 if (err)
11097 return err;
11098
11099 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11100 }
11101
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)11102 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11103 {
11104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11105 struct wireless_dev *wdev = info->user_ptr[1];
11106 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11107
11108 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11109 return -EINVAL;
11110
11111 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11112 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11113
11114 switch (wdev->iftype) {
11115 case NL80211_IFTYPE_STATION:
11116 case NL80211_IFTYPE_ADHOC:
11117 case NL80211_IFTYPE_P2P_CLIENT:
11118 case NL80211_IFTYPE_AP:
11119 case NL80211_IFTYPE_AP_VLAN:
11120 case NL80211_IFTYPE_MESH_POINT:
11121 case NL80211_IFTYPE_P2P_GO:
11122 case NL80211_IFTYPE_P2P_DEVICE:
11123 break;
11124 case NL80211_IFTYPE_NAN:
11125 default:
11126 return -EOPNOTSUPP;
11127 }
11128
11129 /* not much point in registering if we can't reply */
11130 if (!rdev->ops->mgmt_tx)
11131 return -EOPNOTSUPP;
11132
11133 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11134 !wiphy_ext_feature_isset(&rdev->wiphy,
11135 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11136 GENL_SET_ERR_MSG(info,
11137 "multicast RX registrations are not supported");
11138 return -EOPNOTSUPP;
11139 }
11140
11141 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11142 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11143 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11144 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11145 info->extack);
11146 }
11147
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)11148 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11149 {
11150 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11151 struct wireless_dev *wdev = info->user_ptr[1];
11152 struct cfg80211_chan_def chandef;
11153 int err;
11154 void *hdr = NULL;
11155 u64 cookie;
11156 struct sk_buff *msg = NULL;
11157 struct cfg80211_mgmt_tx_params params = {
11158 .dont_wait_for_ack =
11159 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11160 };
11161
11162 if (!info->attrs[NL80211_ATTR_FRAME])
11163 return -EINVAL;
11164
11165 if (!rdev->ops->mgmt_tx)
11166 return -EOPNOTSUPP;
11167
11168 switch (wdev->iftype) {
11169 case NL80211_IFTYPE_P2P_DEVICE:
11170 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11171 return -EINVAL;
11172 case NL80211_IFTYPE_STATION:
11173 case NL80211_IFTYPE_ADHOC:
11174 case NL80211_IFTYPE_P2P_CLIENT:
11175 case NL80211_IFTYPE_AP:
11176 case NL80211_IFTYPE_AP_VLAN:
11177 case NL80211_IFTYPE_MESH_POINT:
11178 case NL80211_IFTYPE_P2P_GO:
11179 break;
11180 case NL80211_IFTYPE_NAN:
11181 default:
11182 return -EOPNOTSUPP;
11183 }
11184
11185 if (info->attrs[NL80211_ATTR_DURATION]) {
11186 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11187 return -EINVAL;
11188 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11189
11190 /*
11191 * We should wait on the channel for at least a minimum amount
11192 * of time (10ms) but no longer than the driver supports.
11193 */
11194 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11195 params.wait > rdev->wiphy.max_remain_on_channel_duration)
11196 return -EINVAL;
11197 }
11198
11199 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11200
11201 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11202 return -EINVAL;
11203
11204 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11205
11206 /* get the channel if any has been specified, otherwise pass NULL to
11207 * the driver. The latter will use the current one
11208 */
11209 chandef.chan = NULL;
11210 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11211 err = nl80211_parse_chandef(rdev, info, &chandef);
11212 if (err)
11213 return err;
11214 }
11215
11216 if (!chandef.chan && params.offchan)
11217 return -EINVAL;
11218
11219 wdev_lock(wdev);
11220 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11221 wdev_unlock(wdev);
11222 return -EBUSY;
11223 }
11224 wdev_unlock(wdev);
11225
11226 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11227 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11228
11229 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11230 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11231 int i;
11232
11233 if (len % sizeof(u16))
11234 return -EINVAL;
11235
11236 params.n_csa_offsets = len / sizeof(u16);
11237 params.csa_offsets =
11238 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11239
11240 /* check that all the offsets fit the frame */
11241 for (i = 0; i < params.n_csa_offsets; i++) {
11242 if (params.csa_offsets[i] >= params.len)
11243 return -EINVAL;
11244 }
11245 }
11246
11247 if (!params.dont_wait_for_ack) {
11248 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11249 if (!msg)
11250 return -ENOMEM;
11251
11252 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11253 NL80211_CMD_FRAME);
11254 if (!hdr) {
11255 err = -ENOBUFS;
11256 goto free_msg;
11257 }
11258 }
11259
11260 params.chan = chandef.chan;
11261 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
11262 if (err)
11263 goto free_msg;
11264
11265 if (msg) {
11266 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11267 NL80211_ATTR_PAD))
11268 goto nla_put_failure;
11269
11270 genlmsg_end(msg, hdr);
11271 return genlmsg_reply(msg, info);
11272 }
11273
11274 return 0;
11275
11276 nla_put_failure:
11277 err = -ENOBUFS;
11278 free_msg:
11279 nlmsg_free(msg);
11280 return err;
11281 }
11282
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)11283 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11284 {
11285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11286 struct wireless_dev *wdev = info->user_ptr[1];
11287 u64 cookie;
11288
11289 if (!info->attrs[NL80211_ATTR_COOKIE])
11290 return -EINVAL;
11291
11292 if (!rdev->ops->mgmt_tx_cancel_wait)
11293 return -EOPNOTSUPP;
11294
11295 switch (wdev->iftype) {
11296 case NL80211_IFTYPE_STATION:
11297 case NL80211_IFTYPE_ADHOC:
11298 case NL80211_IFTYPE_P2P_CLIENT:
11299 case NL80211_IFTYPE_AP:
11300 case NL80211_IFTYPE_AP_VLAN:
11301 case NL80211_IFTYPE_P2P_GO:
11302 case NL80211_IFTYPE_P2P_DEVICE:
11303 break;
11304 case NL80211_IFTYPE_NAN:
11305 default:
11306 return -EOPNOTSUPP;
11307 }
11308
11309 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11310
11311 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11312 }
11313
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)11314 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11315 {
11316 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11317 struct wireless_dev *wdev;
11318 struct net_device *dev = info->user_ptr[1];
11319 u8 ps_state;
11320 bool state;
11321 int err;
11322
11323 if (!info->attrs[NL80211_ATTR_PS_STATE])
11324 return -EINVAL;
11325
11326 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11327
11328 wdev = dev->ieee80211_ptr;
11329
11330 if (!rdev->ops->set_power_mgmt)
11331 return -EOPNOTSUPP;
11332
11333 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11334
11335 if (state == wdev->ps)
11336 return 0;
11337
11338 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11339 if (!err)
11340 wdev->ps = state;
11341 return err;
11342 }
11343
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)11344 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11345 {
11346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11347 enum nl80211_ps_state ps_state;
11348 struct wireless_dev *wdev;
11349 struct net_device *dev = info->user_ptr[1];
11350 struct sk_buff *msg;
11351 void *hdr;
11352 int err;
11353
11354 wdev = dev->ieee80211_ptr;
11355
11356 if (!rdev->ops->set_power_mgmt)
11357 return -EOPNOTSUPP;
11358
11359 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11360 if (!msg)
11361 return -ENOMEM;
11362
11363 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11364 NL80211_CMD_GET_POWER_SAVE);
11365 if (!hdr) {
11366 err = -ENOBUFS;
11367 goto free_msg;
11368 }
11369
11370 if (wdev->ps)
11371 ps_state = NL80211_PS_ENABLED;
11372 else
11373 ps_state = NL80211_PS_DISABLED;
11374
11375 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11376 goto nla_put_failure;
11377
11378 genlmsg_end(msg, hdr);
11379 return genlmsg_reply(msg, info);
11380
11381 nla_put_failure:
11382 err = -ENOBUFS;
11383 free_msg:
11384 nlmsg_free(msg);
11385 return err;
11386 }
11387
11388 static const struct nla_policy
11389 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11390 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11391 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11392 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11393 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11394 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11395 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11396 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11397 };
11398
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)11399 static int nl80211_set_cqm_txe(struct genl_info *info,
11400 u32 rate, u32 pkts, u32 intvl)
11401 {
11402 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11403 struct net_device *dev = info->user_ptr[1];
11404 struct wireless_dev *wdev = dev->ieee80211_ptr;
11405
11406 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11407 return -EINVAL;
11408
11409 if (!rdev->ops->set_cqm_txe_config)
11410 return -EOPNOTSUPP;
11411
11412 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11413 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11414 return -EOPNOTSUPP;
11415
11416 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11417 }
11418
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev)11419 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11420 struct net_device *dev)
11421 {
11422 struct wireless_dev *wdev = dev->ieee80211_ptr;
11423 s32 last, low, high;
11424 u32 hyst;
11425 int i, n, low_index;
11426 int err;
11427
11428 /* RSSI reporting disabled? */
11429 if (!wdev->cqm_config)
11430 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11431
11432 /*
11433 * Obtain current RSSI value if possible, if not and no RSSI threshold
11434 * event has been received yet, we should receive an event after a
11435 * connection is established and enough beacons received to calculate
11436 * the average.
11437 */
11438 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11439 rdev->ops->get_station) {
11440 struct station_info sinfo = {};
11441 u8 *mac_addr;
11442
11443 mac_addr = wdev->current_bss->pub.bssid;
11444
11445 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11446 if (err)
11447 return err;
11448
11449 cfg80211_sinfo_release_content(&sinfo);
11450 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11451 wdev->cqm_config->last_rssi_event_value =
11452 (s8) sinfo.rx_beacon_signal_avg;
11453 }
11454
11455 last = wdev->cqm_config->last_rssi_event_value;
11456 hyst = wdev->cqm_config->rssi_hyst;
11457 n = wdev->cqm_config->n_rssi_thresholds;
11458
11459 for (i = 0; i < n; i++) {
11460 i = array_index_nospec(i, n);
11461 if (last < wdev->cqm_config->rssi_thresholds[i])
11462 break;
11463 }
11464
11465 low_index = i - 1;
11466 if (low_index >= 0) {
11467 low_index = array_index_nospec(low_index, n);
11468 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11469 } else {
11470 low = S32_MIN;
11471 }
11472 if (i < n) {
11473 i = array_index_nospec(i, n);
11474 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11475 } else {
11476 high = S32_MAX;
11477 }
11478
11479 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11480 }
11481
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)11482 static int nl80211_set_cqm_rssi(struct genl_info *info,
11483 const s32 *thresholds, int n_thresholds,
11484 u32 hysteresis)
11485 {
11486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11487 struct net_device *dev = info->user_ptr[1];
11488 struct wireless_dev *wdev = dev->ieee80211_ptr;
11489 int i, err;
11490 s32 prev = S32_MIN;
11491
11492 /* Check all values negative and sorted */
11493 for (i = 0; i < n_thresholds; i++) {
11494 if (thresholds[i] > 0 || thresholds[i] <= prev)
11495 return -EINVAL;
11496
11497 prev = thresholds[i];
11498 }
11499
11500 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11501 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11502 return -EOPNOTSUPP;
11503
11504 wdev_lock(wdev);
11505 cfg80211_cqm_config_free(wdev);
11506 wdev_unlock(wdev);
11507
11508 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11509 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11510 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11511
11512 return rdev_set_cqm_rssi_config(rdev, dev,
11513 thresholds[0], hysteresis);
11514 }
11515
11516 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11517 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11518 return -EOPNOTSUPP;
11519
11520 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11521 n_thresholds = 0;
11522
11523 wdev_lock(wdev);
11524 if (n_thresholds) {
11525 struct cfg80211_cqm_config *cqm_config;
11526
11527 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11528 n_thresholds * sizeof(s32), GFP_KERNEL);
11529 if (!cqm_config) {
11530 err = -ENOMEM;
11531 goto unlock;
11532 }
11533
11534 cqm_config->rssi_hyst = hysteresis;
11535 cqm_config->n_rssi_thresholds = n_thresholds;
11536 memcpy(cqm_config->rssi_thresholds, thresholds,
11537 n_thresholds * sizeof(s32));
11538
11539 wdev->cqm_config = cqm_config;
11540 }
11541
11542 err = cfg80211_cqm_rssi_update(rdev, dev);
11543
11544 unlock:
11545 wdev_unlock(wdev);
11546
11547 return err;
11548 }
11549
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)11550 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11551 {
11552 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11553 struct nlattr *cqm;
11554 int err;
11555
11556 cqm = info->attrs[NL80211_ATTR_CQM];
11557 if (!cqm)
11558 return -EINVAL;
11559
11560 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11561 nl80211_attr_cqm_policy,
11562 info->extack);
11563 if (err)
11564 return err;
11565
11566 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11567 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11568 const s32 *thresholds =
11569 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11570 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11571 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11572
11573 if (len % 4)
11574 return -EINVAL;
11575
11576 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11577 hysteresis);
11578 }
11579
11580 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11581 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11582 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11583 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11584 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11585 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11586
11587 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11588 }
11589
11590 return -EINVAL;
11591 }
11592
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)11593 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11594 {
11595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11596 struct net_device *dev = info->user_ptr[1];
11597 struct ocb_setup setup = {};
11598 int err;
11599
11600 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11601 if (err)
11602 return err;
11603
11604 return cfg80211_join_ocb(rdev, dev, &setup);
11605 }
11606
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)11607 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11608 {
11609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11610 struct net_device *dev = info->user_ptr[1];
11611
11612 return cfg80211_leave_ocb(rdev, dev);
11613 }
11614
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)11615 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11616 {
11617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11618 struct net_device *dev = info->user_ptr[1];
11619 struct mesh_config cfg;
11620 struct mesh_setup setup;
11621 int err;
11622
11623 /* start with default */
11624 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11625 memcpy(&setup, &default_mesh_setup, sizeof(setup));
11626
11627 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11628 /* and parse parameters if given */
11629 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11630 if (err)
11631 return err;
11632 }
11633
11634 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11635 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11636 return -EINVAL;
11637
11638 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11639 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11640
11641 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11642 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11643 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11644 return -EINVAL;
11645
11646 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11647 setup.beacon_interval =
11648 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11649
11650 err = cfg80211_validate_beacon_int(rdev,
11651 NL80211_IFTYPE_MESH_POINT,
11652 setup.beacon_interval);
11653 if (err)
11654 return err;
11655 }
11656
11657 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11658 setup.dtim_period =
11659 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11660 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11661 return -EINVAL;
11662 }
11663
11664 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11665 /* parse additional setup parameters if given */
11666 err = nl80211_parse_mesh_setup(info, &setup);
11667 if (err)
11668 return err;
11669 }
11670
11671 if (setup.user_mpm)
11672 cfg.auto_open_plinks = false;
11673
11674 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11675 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11676 if (err)
11677 return err;
11678 } else {
11679 /* __cfg80211_join_mesh() will sort it out */
11680 setup.chandef.chan = NULL;
11681 }
11682
11683 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11684 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11685 int n_rates =
11686 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11687 struct ieee80211_supported_band *sband;
11688
11689 if (!setup.chandef.chan)
11690 return -EINVAL;
11691
11692 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11693
11694 err = ieee80211_get_ratemask(sband, rates, n_rates,
11695 &setup.basic_rates);
11696 if (err)
11697 return err;
11698 }
11699
11700 if (info->attrs[NL80211_ATTR_TX_RATES]) {
11701 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11702 NL80211_ATTR_TX_RATES,
11703 &setup.beacon_rate,
11704 dev);
11705 if (err)
11706 return err;
11707
11708 if (!setup.chandef.chan)
11709 return -EINVAL;
11710
11711 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11712 &setup.beacon_rate);
11713 if (err)
11714 return err;
11715 }
11716
11717 setup.userspace_handles_dfs =
11718 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11719
11720 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11721 int r = validate_pae_over_nl80211(rdev, info);
11722
11723 if (r < 0)
11724 return r;
11725
11726 setup.control_port_over_nl80211 = true;
11727 }
11728
11729 wdev_lock(dev->ieee80211_ptr);
11730 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11731 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11732 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11733 wdev_unlock(dev->ieee80211_ptr);
11734
11735 return err;
11736 }
11737
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)11738 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11739 {
11740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11741 struct net_device *dev = info->user_ptr[1];
11742
11743 return cfg80211_leave_mesh(rdev, dev);
11744 }
11745
11746 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)11747 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11748 struct cfg80211_registered_device *rdev)
11749 {
11750 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11751 struct nlattr *nl_pats, *nl_pat;
11752 int i, pat_len;
11753
11754 if (!wowlan->n_patterns)
11755 return 0;
11756
11757 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11758 if (!nl_pats)
11759 return -ENOBUFS;
11760
11761 for (i = 0; i < wowlan->n_patterns; i++) {
11762 nl_pat = nla_nest_start_noflag(msg, i + 1);
11763 if (!nl_pat)
11764 return -ENOBUFS;
11765 pat_len = wowlan->patterns[i].pattern_len;
11766 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11767 wowlan->patterns[i].mask) ||
11768 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11769 wowlan->patterns[i].pattern) ||
11770 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11771 wowlan->patterns[i].pkt_offset))
11772 return -ENOBUFS;
11773 nla_nest_end(msg, nl_pat);
11774 }
11775 nla_nest_end(msg, nl_pats);
11776
11777 return 0;
11778 }
11779
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)11780 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11781 struct cfg80211_wowlan_tcp *tcp)
11782 {
11783 struct nlattr *nl_tcp;
11784
11785 if (!tcp)
11786 return 0;
11787
11788 nl_tcp = nla_nest_start_noflag(msg,
11789 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11790 if (!nl_tcp)
11791 return -ENOBUFS;
11792
11793 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11794 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11795 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11796 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11797 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11798 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11799 tcp->payload_len, tcp->payload) ||
11800 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11801 tcp->data_interval) ||
11802 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11803 tcp->wake_len, tcp->wake_data) ||
11804 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11805 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11806 return -ENOBUFS;
11807
11808 if (tcp->payload_seq.len &&
11809 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11810 sizeof(tcp->payload_seq), &tcp->payload_seq))
11811 return -ENOBUFS;
11812
11813 if (tcp->payload_tok.len &&
11814 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11815 sizeof(tcp->payload_tok) + tcp->tokens_size,
11816 &tcp->payload_tok))
11817 return -ENOBUFS;
11818
11819 nla_nest_end(msg, nl_tcp);
11820
11821 return 0;
11822 }
11823
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)11824 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11825 struct cfg80211_sched_scan_request *req)
11826 {
11827 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11828 int i;
11829
11830 if (!req)
11831 return 0;
11832
11833 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11834 if (!nd)
11835 return -ENOBUFS;
11836
11837 if (req->n_scan_plans == 1 &&
11838 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11839 req->scan_plans[0].interval * 1000))
11840 return -ENOBUFS;
11841
11842 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11843 return -ENOBUFS;
11844
11845 if (req->relative_rssi_set) {
11846 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11847
11848 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11849 req->relative_rssi))
11850 return -ENOBUFS;
11851
11852 rssi_adjust.band = req->rssi_adjust.band;
11853 rssi_adjust.delta = req->rssi_adjust.delta;
11854 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11855 sizeof(rssi_adjust), &rssi_adjust))
11856 return -ENOBUFS;
11857 }
11858
11859 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11860 if (!freqs)
11861 return -ENOBUFS;
11862
11863 for (i = 0; i < req->n_channels; i++) {
11864 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11865 return -ENOBUFS;
11866 }
11867
11868 nla_nest_end(msg, freqs);
11869
11870 if (req->n_match_sets) {
11871 matches = nla_nest_start_noflag(msg,
11872 NL80211_ATTR_SCHED_SCAN_MATCH);
11873 if (!matches)
11874 return -ENOBUFS;
11875
11876 for (i = 0; i < req->n_match_sets; i++) {
11877 match = nla_nest_start_noflag(msg, i);
11878 if (!match)
11879 return -ENOBUFS;
11880
11881 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11882 req->match_sets[i].ssid.ssid_len,
11883 req->match_sets[i].ssid.ssid))
11884 return -ENOBUFS;
11885 nla_nest_end(msg, match);
11886 }
11887 nla_nest_end(msg, matches);
11888 }
11889
11890 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11891 if (!scan_plans)
11892 return -ENOBUFS;
11893
11894 for (i = 0; i < req->n_scan_plans; i++) {
11895 scan_plan = nla_nest_start_noflag(msg, i + 1);
11896 if (!scan_plan)
11897 return -ENOBUFS;
11898
11899 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11900 req->scan_plans[i].interval) ||
11901 (req->scan_plans[i].iterations &&
11902 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11903 req->scan_plans[i].iterations)))
11904 return -ENOBUFS;
11905 nla_nest_end(msg, scan_plan);
11906 }
11907 nla_nest_end(msg, scan_plans);
11908
11909 nla_nest_end(msg, nd);
11910
11911 return 0;
11912 }
11913
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)11914 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11915 {
11916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11917 struct sk_buff *msg;
11918 void *hdr;
11919 u32 size = NLMSG_DEFAULT_SIZE;
11920
11921 if (!rdev->wiphy.wowlan)
11922 return -EOPNOTSUPP;
11923
11924 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11925 /* adjust size to have room for all the data */
11926 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11927 rdev->wiphy.wowlan_config->tcp->payload_len +
11928 rdev->wiphy.wowlan_config->tcp->wake_len +
11929 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11930 }
11931
11932 msg = nlmsg_new(size, GFP_KERNEL);
11933 if (!msg)
11934 return -ENOMEM;
11935
11936 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11937 NL80211_CMD_GET_WOWLAN);
11938 if (!hdr)
11939 goto nla_put_failure;
11940
11941 if (rdev->wiphy.wowlan_config) {
11942 struct nlattr *nl_wowlan;
11943
11944 nl_wowlan = nla_nest_start_noflag(msg,
11945 NL80211_ATTR_WOWLAN_TRIGGERS);
11946 if (!nl_wowlan)
11947 goto nla_put_failure;
11948
11949 if ((rdev->wiphy.wowlan_config->any &&
11950 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11951 (rdev->wiphy.wowlan_config->disconnect &&
11952 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11953 (rdev->wiphy.wowlan_config->magic_pkt &&
11954 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11955 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11956 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11957 (rdev->wiphy.wowlan_config->eap_identity_req &&
11958 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11959 (rdev->wiphy.wowlan_config->four_way_handshake &&
11960 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11961 (rdev->wiphy.wowlan_config->rfkill_release &&
11962 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11963 goto nla_put_failure;
11964
11965 if (nl80211_send_wowlan_patterns(msg, rdev))
11966 goto nla_put_failure;
11967
11968 if (nl80211_send_wowlan_tcp(msg,
11969 rdev->wiphy.wowlan_config->tcp))
11970 goto nla_put_failure;
11971
11972 if (nl80211_send_wowlan_nd(
11973 msg,
11974 rdev->wiphy.wowlan_config->nd_config))
11975 goto nla_put_failure;
11976
11977 nla_nest_end(msg, nl_wowlan);
11978 }
11979
11980 genlmsg_end(msg, hdr);
11981 return genlmsg_reply(msg, info);
11982
11983 nla_put_failure:
11984 nlmsg_free(msg);
11985 return -ENOBUFS;
11986 }
11987
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)11988 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11989 struct nlattr *attr,
11990 struct cfg80211_wowlan *trig)
11991 {
11992 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11993 struct cfg80211_wowlan_tcp *cfg;
11994 struct nl80211_wowlan_tcp_data_token *tok = NULL;
11995 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11996 u32 size;
11997 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11998 int err, port;
11999
12000 if (!rdev->wiphy.wowlan->tcp)
12001 return -EINVAL;
12002
12003 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12004 nl80211_wowlan_tcp_policy, NULL);
12005 if (err)
12006 return err;
12007
12008 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12009 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12010 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12011 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12012 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12013 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12014 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12015 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12016 return -EINVAL;
12017
12018 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12019 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12020 return -EINVAL;
12021
12022 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12023 rdev->wiphy.wowlan->tcp->data_interval_max ||
12024 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12025 return -EINVAL;
12026
12027 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12028 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12029 return -EINVAL;
12030
12031 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12032 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12033 return -EINVAL;
12034
12035 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12036 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12037
12038 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12039 tokens_size = tokln - sizeof(*tok);
12040
12041 if (!tok->len || tokens_size % tok->len)
12042 return -EINVAL;
12043 if (!rdev->wiphy.wowlan->tcp->tok)
12044 return -EINVAL;
12045 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12046 return -EINVAL;
12047 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12048 return -EINVAL;
12049 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12050 return -EINVAL;
12051 if (tok->offset + tok->len > data_size)
12052 return -EINVAL;
12053 }
12054
12055 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12056 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12057 if (!rdev->wiphy.wowlan->tcp->seq)
12058 return -EINVAL;
12059 if (seq->len == 0 || seq->len > 4)
12060 return -EINVAL;
12061 if (seq->len + seq->offset > data_size)
12062 return -EINVAL;
12063 }
12064
12065 size = sizeof(*cfg);
12066 size += data_size;
12067 size += wake_size + wake_mask_size;
12068 size += tokens_size;
12069
12070 cfg = kzalloc(size, GFP_KERNEL);
12071 if (!cfg)
12072 return -ENOMEM;
12073 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12074 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12075 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12076 ETH_ALEN);
12077 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12078 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12079 else
12080 port = 0;
12081 #ifdef CONFIG_INET
12082 /* allocate a socket and port for it and use it */
12083 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12084 IPPROTO_TCP, &cfg->sock, 1);
12085 if (err) {
12086 kfree(cfg);
12087 return err;
12088 }
12089 if (inet_csk_get_port(cfg->sock->sk, port)) {
12090 sock_release(cfg->sock);
12091 kfree(cfg);
12092 return -EADDRINUSE;
12093 }
12094 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12095 #else
12096 if (!port) {
12097 kfree(cfg);
12098 return -EINVAL;
12099 }
12100 cfg->src_port = port;
12101 #endif
12102
12103 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12104 cfg->payload_len = data_size;
12105 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12106 memcpy((void *)cfg->payload,
12107 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12108 data_size);
12109 if (seq)
12110 cfg->payload_seq = *seq;
12111 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12112 cfg->wake_len = wake_size;
12113 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12114 memcpy((void *)cfg->wake_data,
12115 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12116 wake_size);
12117 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12118 data_size + wake_size;
12119 memcpy((void *)cfg->wake_mask,
12120 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12121 wake_mask_size);
12122 if (tok) {
12123 cfg->tokens_size = tokens_size;
12124 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12125 }
12126
12127 trig->tcp = cfg;
12128
12129 return 0;
12130 }
12131
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)12132 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12133 const struct wiphy_wowlan_support *wowlan,
12134 struct nlattr *attr,
12135 struct cfg80211_wowlan *trig)
12136 {
12137 struct nlattr **tb;
12138 int err;
12139
12140 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12141 if (!tb)
12142 return -ENOMEM;
12143
12144 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12145 err = -EOPNOTSUPP;
12146 goto out;
12147 }
12148
12149 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12150 nl80211_policy, NULL);
12151 if (err)
12152 goto out;
12153
12154 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12155 wowlan->max_nd_match_sets);
12156 err = PTR_ERR_OR_ZERO(trig->nd_config);
12157 if (err)
12158 trig->nd_config = NULL;
12159
12160 out:
12161 kfree(tb);
12162 return err;
12163 }
12164
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)12165 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12166 {
12167 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12168 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12169 struct cfg80211_wowlan new_triggers = {};
12170 struct cfg80211_wowlan *ntrig;
12171 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12172 int err, i;
12173 bool prev_enabled = rdev->wiphy.wowlan_config;
12174 bool regular = false;
12175
12176 if (!wowlan)
12177 return -EOPNOTSUPP;
12178
12179 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12180 cfg80211_rdev_free_wowlan(rdev);
12181 rdev->wiphy.wowlan_config = NULL;
12182 goto set_wakeup;
12183 }
12184
12185 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12186 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12187 nl80211_wowlan_policy, info->extack);
12188 if (err)
12189 return err;
12190
12191 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12192 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12193 return -EINVAL;
12194 new_triggers.any = true;
12195 }
12196
12197 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12198 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12199 return -EINVAL;
12200 new_triggers.disconnect = true;
12201 regular = true;
12202 }
12203
12204 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12205 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12206 return -EINVAL;
12207 new_triggers.magic_pkt = true;
12208 regular = true;
12209 }
12210
12211 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12212 return -EINVAL;
12213
12214 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12215 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12216 return -EINVAL;
12217 new_triggers.gtk_rekey_failure = true;
12218 regular = true;
12219 }
12220
12221 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12222 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12223 return -EINVAL;
12224 new_triggers.eap_identity_req = true;
12225 regular = true;
12226 }
12227
12228 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12229 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12230 return -EINVAL;
12231 new_triggers.four_way_handshake = true;
12232 regular = true;
12233 }
12234
12235 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12236 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12237 return -EINVAL;
12238 new_triggers.rfkill_release = true;
12239 regular = true;
12240 }
12241
12242 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12243 struct nlattr *pat;
12244 int n_patterns = 0;
12245 int rem, pat_len, mask_len, pkt_offset;
12246 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12247
12248 regular = true;
12249
12250 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12251 rem)
12252 n_patterns++;
12253 if (n_patterns > wowlan->n_patterns)
12254 return -EINVAL;
12255
12256 new_triggers.patterns = kcalloc(n_patterns,
12257 sizeof(new_triggers.patterns[0]),
12258 GFP_KERNEL);
12259 if (!new_triggers.patterns)
12260 return -ENOMEM;
12261
12262 new_triggers.n_patterns = n_patterns;
12263 i = 0;
12264
12265 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12266 rem) {
12267 u8 *mask_pat;
12268
12269 err = nla_parse_nested_deprecated(pat_tb,
12270 MAX_NL80211_PKTPAT,
12271 pat,
12272 nl80211_packet_pattern_policy,
12273 info->extack);
12274 if (err)
12275 goto error;
12276
12277 err = -EINVAL;
12278 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12279 !pat_tb[NL80211_PKTPAT_PATTERN])
12280 goto error;
12281 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12282 mask_len = DIV_ROUND_UP(pat_len, 8);
12283 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12284 goto error;
12285 if (pat_len > wowlan->pattern_max_len ||
12286 pat_len < wowlan->pattern_min_len)
12287 goto error;
12288
12289 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12290 pkt_offset = 0;
12291 else
12292 pkt_offset = nla_get_u32(
12293 pat_tb[NL80211_PKTPAT_OFFSET]);
12294 if (pkt_offset > wowlan->max_pkt_offset)
12295 goto error;
12296 new_triggers.patterns[i].pkt_offset = pkt_offset;
12297
12298 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12299 if (!mask_pat) {
12300 err = -ENOMEM;
12301 goto error;
12302 }
12303 new_triggers.patterns[i].mask = mask_pat;
12304 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12305 mask_len);
12306 mask_pat += mask_len;
12307 new_triggers.patterns[i].pattern = mask_pat;
12308 new_triggers.patterns[i].pattern_len = pat_len;
12309 memcpy(mask_pat,
12310 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12311 pat_len);
12312 i++;
12313 }
12314 }
12315
12316 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12317 regular = true;
12318 err = nl80211_parse_wowlan_tcp(
12319 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12320 &new_triggers);
12321 if (err)
12322 goto error;
12323 }
12324
12325 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12326 regular = true;
12327 err = nl80211_parse_wowlan_nd(
12328 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12329 &new_triggers);
12330 if (err)
12331 goto error;
12332 }
12333
12334 /* The 'any' trigger means the device continues operating more or less
12335 * as in its normal operation mode and wakes up the host on most of the
12336 * normal interrupts (like packet RX, ...)
12337 * It therefore makes little sense to combine with the more constrained
12338 * wakeup trigger modes.
12339 */
12340 if (new_triggers.any && regular) {
12341 err = -EINVAL;
12342 goto error;
12343 }
12344
12345 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12346 if (!ntrig) {
12347 err = -ENOMEM;
12348 goto error;
12349 }
12350 cfg80211_rdev_free_wowlan(rdev);
12351 rdev->wiphy.wowlan_config = ntrig;
12352
12353 set_wakeup:
12354 if (rdev->ops->set_wakeup &&
12355 prev_enabled != !!rdev->wiphy.wowlan_config)
12356 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12357
12358 return 0;
12359 error:
12360 for (i = 0; i < new_triggers.n_patterns; i++)
12361 kfree(new_triggers.patterns[i].mask);
12362 kfree(new_triggers.patterns);
12363 if (new_triggers.tcp && new_triggers.tcp->sock)
12364 sock_release(new_triggers.tcp->sock);
12365 kfree(new_triggers.tcp);
12366 kfree(new_triggers.nd_config);
12367 return err;
12368 }
12369 #endif
12370
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)12371 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12372 struct cfg80211_registered_device *rdev)
12373 {
12374 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12375 int i, j, pat_len;
12376 struct cfg80211_coalesce_rules *rule;
12377
12378 if (!rdev->coalesce->n_rules)
12379 return 0;
12380
12381 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12382 if (!nl_rules)
12383 return -ENOBUFS;
12384
12385 for (i = 0; i < rdev->coalesce->n_rules; i++) {
12386 nl_rule = nla_nest_start_noflag(msg, i + 1);
12387 if (!nl_rule)
12388 return -ENOBUFS;
12389
12390 rule = &rdev->coalesce->rules[i];
12391 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12392 rule->delay))
12393 return -ENOBUFS;
12394
12395 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12396 rule->condition))
12397 return -ENOBUFS;
12398
12399 nl_pats = nla_nest_start_noflag(msg,
12400 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12401 if (!nl_pats)
12402 return -ENOBUFS;
12403
12404 for (j = 0; j < rule->n_patterns; j++) {
12405 nl_pat = nla_nest_start_noflag(msg, j + 1);
12406 if (!nl_pat)
12407 return -ENOBUFS;
12408 pat_len = rule->patterns[j].pattern_len;
12409 if (nla_put(msg, NL80211_PKTPAT_MASK,
12410 DIV_ROUND_UP(pat_len, 8),
12411 rule->patterns[j].mask) ||
12412 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12413 rule->patterns[j].pattern) ||
12414 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12415 rule->patterns[j].pkt_offset))
12416 return -ENOBUFS;
12417 nla_nest_end(msg, nl_pat);
12418 }
12419 nla_nest_end(msg, nl_pats);
12420 nla_nest_end(msg, nl_rule);
12421 }
12422 nla_nest_end(msg, nl_rules);
12423
12424 return 0;
12425 }
12426
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)12427 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12428 {
12429 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12430 struct sk_buff *msg;
12431 void *hdr;
12432
12433 if (!rdev->wiphy.coalesce)
12434 return -EOPNOTSUPP;
12435
12436 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12437 if (!msg)
12438 return -ENOMEM;
12439
12440 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12441 NL80211_CMD_GET_COALESCE);
12442 if (!hdr)
12443 goto nla_put_failure;
12444
12445 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12446 goto nla_put_failure;
12447
12448 genlmsg_end(msg, hdr);
12449 return genlmsg_reply(msg, info);
12450
12451 nla_put_failure:
12452 nlmsg_free(msg);
12453 return -ENOBUFS;
12454 }
12455
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)12456 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12457 {
12458 struct cfg80211_coalesce *coalesce = rdev->coalesce;
12459 int i, j;
12460 struct cfg80211_coalesce_rules *rule;
12461
12462 if (!coalesce)
12463 return;
12464
12465 for (i = 0; i < coalesce->n_rules; i++) {
12466 rule = &coalesce->rules[i];
12467 for (j = 0; j < rule->n_patterns; j++)
12468 kfree(rule->patterns[j].mask);
12469 kfree(rule->patterns);
12470 }
12471 kfree(coalesce->rules);
12472 kfree(coalesce);
12473 rdev->coalesce = NULL;
12474 }
12475
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)12476 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12477 struct nlattr *rule,
12478 struct cfg80211_coalesce_rules *new_rule)
12479 {
12480 int err, i;
12481 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12482 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12483 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12484 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12485
12486 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12487 rule, nl80211_coalesce_policy, NULL);
12488 if (err)
12489 return err;
12490
12491 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12492 new_rule->delay =
12493 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12494 if (new_rule->delay > coalesce->max_delay)
12495 return -EINVAL;
12496
12497 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12498 new_rule->condition =
12499 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12500
12501 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12502 return -EINVAL;
12503
12504 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12505 rem)
12506 n_patterns++;
12507 if (n_patterns > coalesce->n_patterns)
12508 return -EINVAL;
12509
12510 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12511 GFP_KERNEL);
12512 if (!new_rule->patterns)
12513 return -ENOMEM;
12514
12515 new_rule->n_patterns = n_patterns;
12516 i = 0;
12517
12518 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12519 rem) {
12520 u8 *mask_pat;
12521
12522 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12523 pat,
12524 nl80211_packet_pattern_policy,
12525 NULL);
12526 if (err)
12527 return err;
12528
12529 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12530 !pat_tb[NL80211_PKTPAT_PATTERN])
12531 return -EINVAL;
12532 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12533 mask_len = DIV_ROUND_UP(pat_len, 8);
12534 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12535 return -EINVAL;
12536 if (pat_len > coalesce->pattern_max_len ||
12537 pat_len < coalesce->pattern_min_len)
12538 return -EINVAL;
12539
12540 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12541 pkt_offset = 0;
12542 else
12543 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12544 if (pkt_offset > coalesce->max_pkt_offset)
12545 return -EINVAL;
12546 new_rule->patterns[i].pkt_offset = pkt_offset;
12547
12548 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12549 if (!mask_pat)
12550 return -ENOMEM;
12551
12552 new_rule->patterns[i].mask = mask_pat;
12553 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12554 mask_len);
12555
12556 mask_pat += mask_len;
12557 new_rule->patterns[i].pattern = mask_pat;
12558 new_rule->patterns[i].pattern_len = pat_len;
12559 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12560 pat_len);
12561 i++;
12562 }
12563
12564 return 0;
12565 }
12566
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)12567 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12568 {
12569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12570 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12571 struct cfg80211_coalesce new_coalesce = {};
12572 struct cfg80211_coalesce *n_coalesce;
12573 int err, rem_rule, n_rules = 0, i, j;
12574 struct nlattr *rule;
12575 struct cfg80211_coalesce_rules *tmp_rule;
12576
12577 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12578 return -EOPNOTSUPP;
12579
12580 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12581 cfg80211_rdev_free_coalesce(rdev);
12582 rdev_set_coalesce(rdev, NULL);
12583 return 0;
12584 }
12585
12586 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12587 rem_rule)
12588 n_rules++;
12589 if (n_rules > coalesce->n_rules)
12590 return -EINVAL;
12591
12592 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12593 GFP_KERNEL);
12594 if (!new_coalesce.rules)
12595 return -ENOMEM;
12596
12597 new_coalesce.n_rules = n_rules;
12598 i = 0;
12599
12600 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12601 rem_rule) {
12602 err = nl80211_parse_coalesce_rule(rdev, rule,
12603 &new_coalesce.rules[i]);
12604 if (err)
12605 goto error;
12606
12607 i++;
12608 }
12609
12610 err = rdev_set_coalesce(rdev, &new_coalesce);
12611 if (err)
12612 goto error;
12613
12614 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12615 if (!n_coalesce) {
12616 err = -ENOMEM;
12617 goto error;
12618 }
12619 cfg80211_rdev_free_coalesce(rdev);
12620 rdev->coalesce = n_coalesce;
12621
12622 return 0;
12623 error:
12624 for (i = 0; i < new_coalesce.n_rules; i++) {
12625 tmp_rule = &new_coalesce.rules[i];
12626 for (j = 0; j < tmp_rule->n_patterns; j++)
12627 kfree(tmp_rule->patterns[j].mask);
12628 kfree(tmp_rule->patterns);
12629 }
12630 kfree(new_coalesce.rules);
12631
12632 return err;
12633 }
12634
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)12635 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12636 {
12637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12638 struct net_device *dev = info->user_ptr[1];
12639 struct wireless_dev *wdev = dev->ieee80211_ptr;
12640 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12641 struct cfg80211_gtk_rekey_data rekey_data = {};
12642 int err;
12643
12644 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12645 return -EINVAL;
12646
12647 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12648 info->attrs[NL80211_ATTR_REKEY_DATA],
12649 nl80211_rekey_policy, info->extack);
12650 if (err)
12651 return err;
12652
12653 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12654 !tb[NL80211_REKEY_DATA_KCK])
12655 return -EINVAL;
12656 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12657 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12658 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12659 return -ERANGE;
12660 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12661 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12662 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12663 return -ERANGE;
12664
12665 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12666 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12667 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12668 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12669 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12670 if (tb[NL80211_REKEY_DATA_AKM])
12671 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12672
12673 wdev_lock(wdev);
12674 if (!wdev->current_bss) {
12675 err = -ENOTCONN;
12676 goto out;
12677 }
12678
12679 if (!rdev->ops->set_rekey_data) {
12680 err = -EOPNOTSUPP;
12681 goto out;
12682 }
12683
12684 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12685 out:
12686 wdev_unlock(wdev);
12687 return err;
12688 }
12689
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)12690 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12691 struct genl_info *info)
12692 {
12693 struct net_device *dev = info->user_ptr[1];
12694 struct wireless_dev *wdev = dev->ieee80211_ptr;
12695
12696 if (wdev->iftype != NL80211_IFTYPE_AP &&
12697 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12698 return -EINVAL;
12699
12700 if (wdev->ap_unexpected_nlportid)
12701 return -EBUSY;
12702
12703 wdev->ap_unexpected_nlportid = info->snd_portid;
12704 return 0;
12705 }
12706
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)12707 static int nl80211_probe_client(struct sk_buff *skb,
12708 struct genl_info *info)
12709 {
12710 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12711 struct net_device *dev = info->user_ptr[1];
12712 struct wireless_dev *wdev = dev->ieee80211_ptr;
12713 struct sk_buff *msg;
12714 void *hdr;
12715 const u8 *addr;
12716 u64 cookie;
12717 int err;
12718
12719 if (wdev->iftype != NL80211_IFTYPE_AP &&
12720 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12721 return -EOPNOTSUPP;
12722
12723 if (!info->attrs[NL80211_ATTR_MAC])
12724 return -EINVAL;
12725
12726 if (!rdev->ops->probe_client)
12727 return -EOPNOTSUPP;
12728
12729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12730 if (!msg)
12731 return -ENOMEM;
12732
12733 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12734 NL80211_CMD_PROBE_CLIENT);
12735 if (!hdr) {
12736 err = -ENOBUFS;
12737 goto free_msg;
12738 }
12739
12740 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12741
12742 err = rdev_probe_client(rdev, dev, addr, &cookie);
12743 if (err)
12744 goto free_msg;
12745
12746 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12747 NL80211_ATTR_PAD))
12748 goto nla_put_failure;
12749
12750 genlmsg_end(msg, hdr);
12751
12752 return genlmsg_reply(msg, info);
12753
12754 nla_put_failure:
12755 err = -ENOBUFS;
12756 free_msg:
12757 nlmsg_free(msg);
12758 return err;
12759 }
12760
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)12761 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12762 {
12763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12764 struct cfg80211_beacon_registration *reg, *nreg;
12765 int rv;
12766
12767 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12768 return -EOPNOTSUPP;
12769
12770 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12771 if (!nreg)
12772 return -ENOMEM;
12773
12774 /* First, check if already registered. */
12775 spin_lock_bh(&rdev->beacon_registrations_lock);
12776 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12777 if (reg->nlportid == info->snd_portid) {
12778 rv = -EALREADY;
12779 goto out_err;
12780 }
12781 }
12782 /* Add it to the list */
12783 nreg->nlportid = info->snd_portid;
12784 list_add(&nreg->list, &rdev->beacon_registrations);
12785
12786 spin_unlock_bh(&rdev->beacon_registrations_lock);
12787
12788 return 0;
12789 out_err:
12790 spin_unlock_bh(&rdev->beacon_registrations_lock);
12791 kfree(nreg);
12792 return rv;
12793 }
12794
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)12795 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12796 {
12797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12798 struct wireless_dev *wdev = info->user_ptr[1];
12799 int err;
12800
12801 if (!rdev->ops->start_p2p_device)
12802 return -EOPNOTSUPP;
12803
12804 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12805 return -EOPNOTSUPP;
12806
12807 if (wdev_running(wdev))
12808 return 0;
12809
12810 if (rfkill_blocked(rdev->rfkill))
12811 return -ERFKILL;
12812
12813 err = rdev_start_p2p_device(rdev, wdev);
12814 if (err)
12815 return err;
12816
12817 wdev->is_running = true;
12818 rdev->opencount++;
12819
12820 return 0;
12821 }
12822
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)12823 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12824 {
12825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12826 struct wireless_dev *wdev = info->user_ptr[1];
12827
12828 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12829 return -EOPNOTSUPP;
12830
12831 if (!rdev->ops->stop_p2p_device)
12832 return -EOPNOTSUPP;
12833
12834 cfg80211_stop_p2p_device(rdev, wdev);
12835
12836 return 0;
12837 }
12838
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)12839 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12840 {
12841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12842 struct wireless_dev *wdev = info->user_ptr[1];
12843 struct cfg80211_nan_conf conf = {};
12844 int err;
12845
12846 if (wdev->iftype != NL80211_IFTYPE_NAN)
12847 return -EOPNOTSUPP;
12848
12849 if (wdev_running(wdev))
12850 return -EEXIST;
12851
12852 if (rfkill_blocked(rdev->rfkill))
12853 return -ERFKILL;
12854
12855 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12856 return -EINVAL;
12857
12858 conf.master_pref =
12859 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12860
12861 if (info->attrs[NL80211_ATTR_BANDS]) {
12862 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12863
12864 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12865 return -EOPNOTSUPP;
12866
12867 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12868 return -EINVAL;
12869
12870 conf.bands = bands;
12871 }
12872
12873 err = rdev_start_nan(rdev, wdev, &conf);
12874 if (err)
12875 return err;
12876
12877 wdev->is_running = true;
12878 rdev->opencount++;
12879
12880 return 0;
12881 }
12882
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)12883 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12884 {
12885 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12886 struct wireless_dev *wdev = info->user_ptr[1];
12887
12888 if (wdev->iftype != NL80211_IFTYPE_NAN)
12889 return -EOPNOTSUPP;
12890
12891 cfg80211_stop_nan(rdev, wdev);
12892
12893 return 0;
12894 }
12895
validate_nan_filter(struct nlattr * filter_attr)12896 static int validate_nan_filter(struct nlattr *filter_attr)
12897 {
12898 struct nlattr *attr;
12899 int len = 0, n_entries = 0, rem;
12900
12901 nla_for_each_nested(attr, filter_attr, rem) {
12902 len += nla_len(attr);
12903 n_entries++;
12904 }
12905
12906 if (len >= U8_MAX)
12907 return -EINVAL;
12908
12909 return n_entries;
12910 }
12911
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)12912 static int handle_nan_filter(struct nlattr *attr_filter,
12913 struct cfg80211_nan_func *func,
12914 bool tx)
12915 {
12916 struct nlattr *attr;
12917 int n_entries, rem, i;
12918 struct cfg80211_nan_func_filter *filter;
12919
12920 n_entries = validate_nan_filter(attr_filter);
12921 if (n_entries < 0)
12922 return n_entries;
12923
12924 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12925
12926 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12927 if (!filter)
12928 return -ENOMEM;
12929
12930 i = 0;
12931 nla_for_each_nested(attr, attr_filter, rem) {
12932 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12933 filter[i].len = nla_len(attr);
12934 i++;
12935 }
12936 if (tx) {
12937 func->num_tx_filters = n_entries;
12938 func->tx_filters = filter;
12939 } else {
12940 func->num_rx_filters = n_entries;
12941 func->rx_filters = filter;
12942 }
12943
12944 return 0;
12945 }
12946
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)12947 static int nl80211_nan_add_func(struct sk_buff *skb,
12948 struct genl_info *info)
12949 {
12950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12951 struct wireless_dev *wdev = info->user_ptr[1];
12952 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12953 struct cfg80211_nan_func *func;
12954 struct sk_buff *msg = NULL;
12955 void *hdr = NULL;
12956 int err = 0;
12957
12958 if (wdev->iftype != NL80211_IFTYPE_NAN)
12959 return -EOPNOTSUPP;
12960
12961 if (!wdev_running(wdev))
12962 return -ENOTCONN;
12963
12964 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12965 return -EINVAL;
12966
12967 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12968 info->attrs[NL80211_ATTR_NAN_FUNC],
12969 nl80211_nan_func_policy,
12970 info->extack);
12971 if (err)
12972 return err;
12973
12974 func = kzalloc(sizeof(*func), GFP_KERNEL);
12975 if (!func)
12976 return -ENOMEM;
12977
12978 func->cookie = cfg80211_assign_cookie(rdev);
12979
12980 if (!tb[NL80211_NAN_FUNC_TYPE]) {
12981 err = -EINVAL;
12982 goto out;
12983 }
12984
12985
12986 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12987
12988 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12989 err = -EINVAL;
12990 goto out;
12991 }
12992
12993 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12994 sizeof(func->service_id));
12995
12996 func->close_range =
12997 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12998
12999 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13000 func->serv_spec_info_len =
13001 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13002 func->serv_spec_info =
13003 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13004 func->serv_spec_info_len,
13005 GFP_KERNEL);
13006 if (!func->serv_spec_info) {
13007 err = -ENOMEM;
13008 goto out;
13009 }
13010 }
13011
13012 if (tb[NL80211_NAN_FUNC_TTL])
13013 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13014
13015 switch (func->type) {
13016 case NL80211_NAN_FUNC_PUBLISH:
13017 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13018 err = -EINVAL;
13019 goto out;
13020 }
13021
13022 func->publish_type =
13023 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13024 func->publish_bcast =
13025 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13026
13027 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13028 func->publish_bcast) {
13029 err = -EINVAL;
13030 goto out;
13031 }
13032 break;
13033 case NL80211_NAN_FUNC_SUBSCRIBE:
13034 func->subscribe_active =
13035 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13036 break;
13037 case NL80211_NAN_FUNC_FOLLOW_UP:
13038 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13039 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13040 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13041 err = -EINVAL;
13042 goto out;
13043 }
13044
13045 func->followup_id =
13046 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13047 func->followup_reqid =
13048 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13049 memcpy(func->followup_dest.addr,
13050 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13051 sizeof(func->followup_dest.addr));
13052 if (func->ttl) {
13053 err = -EINVAL;
13054 goto out;
13055 }
13056 break;
13057 default:
13058 err = -EINVAL;
13059 goto out;
13060 }
13061
13062 if (tb[NL80211_NAN_FUNC_SRF]) {
13063 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13064
13065 err = nla_parse_nested_deprecated(srf_tb,
13066 NL80211_NAN_SRF_ATTR_MAX,
13067 tb[NL80211_NAN_FUNC_SRF],
13068 nl80211_nan_srf_policy,
13069 info->extack);
13070 if (err)
13071 goto out;
13072
13073 func->srf_include =
13074 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13075
13076 if (srf_tb[NL80211_NAN_SRF_BF]) {
13077 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13078 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13079 err = -EINVAL;
13080 goto out;
13081 }
13082
13083 func->srf_bf_len =
13084 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13085 func->srf_bf =
13086 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13087 func->srf_bf_len, GFP_KERNEL);
13088 if (!func->srf_bf) {
13089 err = -ENOMEM;
13090 goto out;
13091 }
13092
13093 func->srf_bf_idx =
13094 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13095 } else {
13096 struct nlattr *attr, *mac_attr =
13097 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13098 int n_entries, rem, i = 0;
13099
13100 if (!mac_attr) {
13101 err = -EINVAL;
13102 goto out;
13103 }
13104
13105 n_entries = validate_acl_mac_addrs(mac_attr);
13106 if (n_entries <= 0) {
13107 err = -EINVAL;
13108 goto out;
13109 }
13110
13111 func->srf_num_macs = n_entries;
13112 func->srf_macs =
13113 kcalloc(n_entries, sizeof(*func->srf_macs),
13114 GFP_KERNEL);
13115 if (!func->srf_macs) {
13116 err = -ENOMEM;
13117 goto out;
13118 }
13119
13120 nla_for_each_nested(attr, mac_attr, rem)
13121 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13122 sizeof(*func->srf_macs));
13123 }
13124 }
13125
13126 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13127 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13128 func, true);
13129 if (err)
13130 goto out;
13131 }
13132
13133 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13134 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13135 func, false);
13136 if (err)
13137 goto out;
13138 }
13139
13140 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13141 if (!msg) {
13142 err = -ENOMEM;
13143 goto out;
13144 }
13145
13146 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13147 NL80211_CMD_ADD_NAN_FUNCTION);
13148 /* This can't really happen - we just allocated 4KB */
13149 if (WARN_ON(!hdr)) {
13150 err = -ENOMEM;
13151 goto out;
13152 }
13153
13154 err = rdev_add_nan_func(rdev, wdev, func);
13155 out:
13156 if (err < 0) {
13157 cfg80211_free_nan_func(func);
13158 nlmsg_free(msg);
13159 return err;
13160 }
13161
13162 /* propagate the instance id and cookie to userspace */
13163 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13164 NL80211_ATTR_PAD))
13165 goto nla_put_failure;
13166
13167 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13168 if (!func_attr)
13169 goto nla_put_failure;
13170
13171 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13172 func->instance_id))
13173 goto nla_put_failure;
13174
13175 nla_nest_end(msg, func_attr);
13176
13177 genlmsg_end(msg, hdr);
13178 return genlmsg_reply(msg, info);
13179
13180 nla_put_failure:
13181 nlmsg_free(msg);
13182 return -ENOBUFS;
13183 }
13184
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)13185 static int nl80211_nan_del_func(struct sk_buff *skb,
13186 struct genl_info *info)
13187 {
13188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13189 struct wireless_dev *wdev = info->user_ptr[1];
13190 u64 cookie;
13191
13192 if (wdev->iftype != NL80211_IFTYPE_NAN)
13193 return -EOPNOTSUPP;
13194
13195 if (!wdev_running(wdev))
13196 return -ENOTCONN;
13197
13198 if (!info->attrs[NL80211_ATTR_COOKIE])
13199 return -EINVAL;
13200
13201 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13202
13203 rdev_del_nan_func(rdev, wdev, cookie);
13204
13205 return 0;
13206 }
13207
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)13208 static int nl80211_nan_change_config(struct sk_buff *skb,
13209 struct genl_info *info)
13210 {
13211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13212 struct wireless_dev *wdev = info->user_ptr[1];
13213 struct cfg80211_nan_conf conf = {};
13214 u32 changed = 0;
13215
13216 if (wdev->iftype != NL80211_IFTYPE_NAN)
13217 return -EOPNOTSUPP;
13218
13219 if (!wdev_running(wdev))
13220 return -ENOTCONN;
13221
13222 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13223 conf.master_pref =
13224 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13225 if (conf.master_pref <= 1 || conf.master_pref == 255)
13226 return -EINVAL;
13227
13228 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13229 }
13230
13231 if (info->attrs[NL80211_ATTR_BANDS]) {
13232 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13233
13234 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13235 return -EOPNOTSUPP;
13236
13237 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13238 return -EINVAL;
13239
13240 conf.bands = bands;
13241 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13242 }
13243
13244 if (!changed)
13245 return -EINVAL;
13246
13247 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13248 }
13249
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)13250 void cfg80211_nan_match(struct wireless_dev *wdev,
13251 struct cfg80211_nan_match_params *match, gfp_t gfp)
13252 {
13253 struct wiphy *wiphy = wdev->wiphy;
13254 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13255 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13256 struct sk_buff *msg;
13257 void *hdr;
13258
13259 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13260 return;
13261
13262 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13263 if (!msg)
13264 return;
13265
13266 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13267 if (!hdr) {
13268 nlmsg_free(msg);
13269 return;
13270 }
13271
13272 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13273 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13274 wdev->netdev->ifindex)) ||
13275 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13276 NL80211_ATTR_PAD))
13277 goto nla_put_failure;
13278
13279 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13280 NL80211_ATTR_PAD) ||
13281 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13282 goto nla_put_failure;
13283
13284 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13285 if (!match_attr)
13286 goto nla_put_failure;
13287
13288 local_func_attr = nla_nest_start_noflag(msg,
13289 NL80211_NAN_MATCH_FUNC_LOCAL);
13290 if (!local_func_attr)
13291 goto nla_put_failure;
13292
13293 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13294 goto nla_put_failure;
13295
13296 nla_nest_end(msg, local_func_attr);
13297
13298 peer_func_attr = nla_nest_start_noflag(msg,
13299 NL80211_NAN_MATCH_FUNC_PEER);
13300 if (!peer_func_attr)
13301 goto nla_put_failure;
13302
13303 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13304 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13305 goto nla_put_failure;
13306
13307 if (match->info && match->info_len &&
13308 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13309 match->info))
13310 goto nla_put_failure;
13311
13312 nla_nest_end(msg, peer_func_attr);
13313 nla_nest_end(msg, match_attr);
13314 genlmsg_end(msg, hdr);
13315
13316 if (!wdev->owner_nlportid)
13317 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13318 msg, 0, NL80211_MCGRP_NAN, gfp);
13319 else
13320 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13321 wdev->owner_nlportid);
13322
13323 return;
13324
13325 nla_put_failure:
13326 nlmsg_free(msg);
13327 }
13328 EXPORT_SYMBOL(cfg80211_nan_match);
13329
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)13330 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13331 u8 inst_id,
13332 enum nl80211_nan_func_term_reason reason,
13333 u64 cookie, gfp_t gfp)
13334 {
13335 struct wiphy *wiphy = wdev->wiphy;
13336 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13337 struct sk_buff *msg;
13338 struct nlattr *func_attr;
13339 void *hdr;
13340
13341 if (WARN_ON(!inst_id))
13342 return;
13343
13344 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13345 if (!msg)
13346 return;
13347
13348 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13349 if (!hdr) {
13350 nlmsg_free(msg);
13351 return;
13352 }
13353
13354 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13355 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13356 wdev->netdev->ifindex)) ||
13357 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13358 NL80211_ATTR_PAD))
13359 goto nla_put_failure;
13360
13361 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13362 NL80211_ATTR_PAD))
13363 goto nla_put_failure;
13364
13365 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13366 if (!func_attr)
13367 goto nla_put_failure;
13368
13369 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13370 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13371 goto nla_put_failure;
13372
13373 nla_nest_end(msg, func_attr);
13374 genlmsg_end(msg, hdr);
13375
13376 if (!wdev->owner_nlportid)
13377 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13378 msg, 0, NL80211_MCGRP_NAN, gfp);
13379 else
13380 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13381 wdev->owner_nlportid);
13382
13383 return;
13384
13385 nla_put_failure:
13386 nlmsg_free(msg);
13387 }
13388 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13389
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)13390 static int nl80211_get_protocol_features(struct sk_buff *skb,
13391 struct genl_info *info)
13392 {
13393 void *hdr;
13394 struct sk_buff *msg;
13395
13396 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13397 if (!msg)
13398 return -ENOMEM;
13399
13400 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13401 NL80211_CMD_GET_PROTOCOL_FEATURES);
13402 if (!hdr)
13403 goto nla_put_failure;
13404
13405 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13406 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13407 goto nla_put_failure;
13408
13409 genlmsg_end(msg, hdr);
13410 return genlmsg_reply(msg, info);
13411
13412 nla_put_failure:
13413 kfree_skb(msg);
13414 return -ENOBUFS;
13415 }
13416
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)13417 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13418 {
13419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13420 struct cfg80211_update_ft_ies_params ft_params;
13421 struct net_device *dev = info->user_ptr[1];
13422
13423 if (!rdev->ops->update_ft_ies)
13424 return -EOPNOTSUPP;
13425
13426 if (!info->attrs[NL80211_ATTR_MDID] ||
13427 !info->attrs[NL80211_ATTR_IE])
13428 return -EINVAL;
13429
13430 memset(&ft_params, 0, sizeof(ft_params));
13431 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13432 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13433 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13434
13435 return rdev_update_ft_ies(rdev, dev, &ft_params);
13436 }
13437
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)13438 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13439 struct genl_info *info)
13440 {
13441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13442 struct wireless_dev *wdev = info->user_ptr[1];
13443 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13444 u16 duration;
13445 int ret;
13446
13447 if (!rdev->ops->crit_proto_start)
13448 return -EOPNOTSUPP;
13449
13450 if (WARN_ON(!rdev->ops->crit_proto_stop))
13451 return -EINVAL;
13452
13453 if (rdev->crit_proto_nlportid)
13454 return -EBUSY;
13455
13456 /* determine protocol if provided */
13457 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13458 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13459
13460 if (proto >= NUM_NL80211_CRIT_PROTO)
13461 return -EINVAL;
13462
13463 /* timeout must be provided */
13464 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13465 return -EINVAL;
13466
13467 duration =
13468 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13469
13470 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13471 if (!ret)
13472 rdev->crit_proto_nlportid = info->snd_portid;
13473
13474 return ret;
13475 }
13476
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)13477 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13478 struct genl_info *info)
13479 {
13480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13481 struct wireless_dev *wdev = info->user_ptr[1];
13482
13483 if (!rdev->ops->crit_proto_stop)
13484 return -EOPNOTSUPP;
13485
13486 if (rdev->crit_proto_nlportid) {
13487 rdev->crit_proto_nlportid = 0;
13488 rdev_crit_proto_stop(rdev, wdev);
13489 }
13490 return 0;
13491 }
13492
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)13493 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13494 struct nlattr *attr,
13495 struct netlink_ext_ack *extack)
13496 {
13497 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13498 if (attr->nla_type & NLA_F_NESTED) {
13499 NL_SET_ERR_MSG_ATTR(extack, attr,
13500 "unexpected nested data");
13501 return -EINVAL;
13502 }
13503
13504 return 0;
13505 }
13506
13507 if (!(attr->nla_type & NLA_F_NESTED)) {
13508 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13509 return -EINVAL;
13510 }
13511
13512 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13513 }
13514
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)13515 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13516 {
13517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13518 struct wireless_dev *wdev =
13519 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13520 int i, err;
13521 u32 vid, subcmd;
13522
13523 if (!rdev->wiphy.vendor_commands)
13524 return -EOPNOTSUPP;
13525
13526 if (IS_ERR(wdev)) {
13527 err = PTR_ERR(wdev);
13528 if (err != -EINVAL)
13529 return err;
13530 wdev = NULL;
13531 } else if (wdev->wiphy != &rdev->wiphy) {
13532 return -EINVAL;
13533 }
13534
13535 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13536 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13537 return -EINVAL;
13538
13539 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13540 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13541 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13542 const struct wiphy_vendor_command *vcmd;
13543 void *data = NULL;
13544 int len = 0;
13545
13546 vcmd = &rdev->wiphy.vendor_commands[i];
13547
13548 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13549 continue;
13550
13551 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13552 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13553 if (!wdev)
13554 return -EINVAL;
13555 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13556 !wdev->netdev)
13557 return -EINVAL;
13558
13559 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13560 if (!wdev_running(wdev))
13561 return -ENETDOWN;
13562 }
13563 } else {
13564 wdev = NULL;
13565 }
13566
13567 if (!vcmd->doit)
13568 return -EOPNOTSUPP;
13569
13570 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13571 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13572 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13573
13574 err = nl80211_vendor_check_policy(vcmd,
13575 info->attrs[NL80211_ATTR_VENDOR_DATA],
13576 info->extack);
13577 if (err)
13578 return err;
13579 }
13580
13581 rdev->cur_cmd_info = info;
13582 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13583 rdev->cur_cmd_info = NULL;
13584 return err;
13585 }
13586
13587 return -EOPNOTSUPP;
13588 }
13589
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)13590 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13591 struct netlink_callback *cb,
13592 struct cfg80211_registered_device **rdev,
13593 struct wireless_dev **wdev)
13594 {
13595 struct nlattr **attrbuf;
13596 u32 vid, subcmd;
13597 unsigned int i;
13598 int vcmd_idx = -1;
13599 int err;
13600 void *data = NULL;
13601 unsigned int data_len = 0;
13602
13603 if (cb->args[0]) {
13604 /* subtract the 1 again here */
13605 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13606 struct wireless_dev *tmp;
13607
13608 if (!wiphy)
13609 return -ENODEV;
13610 *rdev = wiphy_to_rdev(wiphy);
13611 *wdev = NULL;
13612
13613 if (cb->args[1]) {
13614 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13615 if (tmp->identifier == cb->args[1] - 1) {
13616 *wdev = tmp;
13617 break;
13618 }
13619 }
13620 }
13621
13622 /* keep rtnl locked in successful case */
13623 return 0;
13624 }
13625
13626 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13627 if (!attrbuf)
13628 return -ENOMEM;
13629
13630 err = nlmsg_parse_deprecated(cb->nlh,
13631 GENL_HDRLEN + nl80211_fam.hdrsize,
13632 attrbuf, nl80211_fam.maxattr,
13633 nl80211_policy, NULL);
13634 if (err)
13635 goto out;
13636
13637 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13638 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13639 err = -EINVAL;
13640 goto out;
13641 }
13642
13643 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13644 if (IS_ERR(*wdev))
13645 *wdev = NULL;
13646
13647 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13648 if (IS_ERR(*rdev)) {
13649 err = PTR_ERR(*rdev);
13650 goto out;
13651 }
13652
13653 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13654 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13655
13656 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13657 const struct wiphy_vendor_command *vcmd;
13658
13659 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13660
13661 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13662 continue;
13663
13664 if (!vcmd->dumpit) {
13665 err = -EOPNOTSUPP;
13666 goto out;
13667 }
13668
13669 vcmd_idx = i;
13670 break;
13671 }
13672
13673 if (vcmd_idx < 0) {
13674 err = -EOPNOTSUPP;
13675 goto out;
13676 }
13677
13678 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13679 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13680 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13681
13682 err = nl80211_vendor_check_policy(
13683 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13684 attrbuf[NL80211_ATTR_VENDOR_DATA],
13685 cb->extack);
13686 if (err)
13687 goto out;
13688 }
13689
13690 /* 0 is the first index - add 1 to parse only once */
13691 cb->args[0] = (*rdev)->wiphy_idx + 1;
13692 /* add 1 to know if it was NULL */
13693 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13694 cb->args[2] = vcmd_idx;
13695 cb->args[3] = (unsigned long)data;
13696 cb->args[4] = data_len;
13697
13698 /* keep rtnl locked in successful case */
13699 err = 0;
13700 out:
13701 kfree(attrbuf);
13702 return err;
13703 }
13704
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)13705 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13706 struct netlink_callback *cb)
13707 {
13708 struct cfg80211_registered_device *rdev;
13709 struct wireless_dev *wdev;
13710 unsigned int vcmd_idx;
13711 const struct wiphy_vendor_command *vcmd;
13712 void *data;
13713 int data_len;
13714 int err;
13715 struct nlattr *vendor_data;
13716
13717 rtnl_lock();
13718 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13719 if (err)
13720 goto out;
13721
13722 vcmd_idx = cb->args[2];
13723 data = (void *)cb->args[3];
13724 data_len = cb->args[4];
13725 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13726
13727 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13728 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13729 if (!wdev) {
13730 err = -EINVAL;
13731 goto out;
13732 }
13733 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13734 !wdev->netdev) {
13735 err = -EINVAL;
13736 goto out;
13737 }
13738
13739 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13740 if (!wdev_running(wdev)) {
13741 err = -ENETDOWN;
13742 goto out;
13743 }
13744 }
13745 }
13746
13747 while (1) {
13748 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13749 cb->nlh->nlmsg_seq, NLM_F_MULTI,
13750 NL80211_CMD_VENDOR);
13751 if (!hdr)
13752 break;
13753
13754 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13755 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13756 wdev_id(wdev),
13757 NL80211_ATTR_PAD))) {
13758 genlmsg_cancel(skb, hdr);
13759 break;
13760 }
13761
13762 vendor_data = nla_nest_start_noflag(skb,
13763 NL80211_ATTR_VENDOR_DATA);
13764 if (!vendor_data) {
13765 genlmsg_cancel(skb, hdr);
13766 break;
13767 }
13768
13769 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13770 (unsigned long *)&cb->args[5]);
13771 nla_nest_end(skb, vendor_data);
13772
13773 if (err == -ENOBUFS || err == -ENOENT) {
13774 genlmsg_cancel(skb, hdr);
13775 break;
13776 } else if (err <= 0) {
13777 genlmsg_cancel(skb, hdr);
13778 goto out;
13779 }
13780
13781 genlmsg_end(skb, hdr);
13782 }
13783
13784 err = skb->len;
13785 out:
13786 rtnl_unlock();
13787 return err;
13788 }
13789
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)13790 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13791 enum nl80211_commands cmd,
13792 enum nl80211_attrs attr,
13793 int approxlen)
13794 {
13795 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13796
13797 if (WARN_ON(!rdev->cur_cmd_info))
13798 return NULL;
13799
13800 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13801 rdev->cur_cmd_info->snd_portid,
13802 rdev->cur_cmd_info->snd_seq,
13803 cmd, attr, NULL, GFP_KERNEL);
13804 }
13805 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13806
cfg80211_vendor_cmd_reply(struct sk_buff * skb)13807 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13808 {
13809 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13810 void *hdr = ((void **)skb->cb)[1];
13811 struct nlattr *data = ((void **)skb->cb)[2];
13812
13813 /* clear CB data for netlink core to own from now on */
13814 memset(skb->cb, 0, sizeof(skb->cb));
13815
13816 if (WARN_ON(!rdev->cur_cmd_info)) {
13817 kfree_skb(skb);
13818 return -EINVAL;
13819 }
13820
13821 nla_nest_end(skb, data);
13822 genlmsg_end(skb, hdr);
13823 return genlmsg_reply(skb, rdev->cur_cmd_info);
13824 }
13825 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13826
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)13827 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13828 {
13829 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13830
13831 if (WARN_ON(!rdev->cur_cmd_info))
13832 return 0;
13833
13834 return rdev->cur_cmd_info->snd_portid;
13835 }
13836 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13837
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)13838 static int nl80211_set_qos_map(struct sk_buff *skb,
13839 struct genl_info *info)
13840 {
13841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13842 struct cfg80211_qos_map *qos_map = NULL;
13843 struct net_device *dev = info->user_ptr[1];
13844 u8 *pos, len, num_des, des_len, des;
13845 int ret;
13846
13847 if (!rdev->ops->set_qos_map)
13848 return -EOPNOTSUPP;
13849
13850 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13851 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13852 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13853
13854 if (len % 2)
13855 return -EINVAL;
13856
13857 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13858 if (!qos_map)
13859 return -ENOMEM;
13860
13861 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13862 if (num_des) {
13863 des_len = num_des *
13864 sizeof(struct cfg80211_dscp_exception);
13865 memcpy(qos_map->dscp_exception, pos, des_len);
13866 qos_map->num_des = num_des;
13867 for (des = 0; des < num_des; des++) {
13868 if (qos_map->dscp_exception[des].up > 7) {
13869 kfree(qos_map);
13870 return -EINVAL;
13871 }
13872 }
13873 pos += des_len;
13874 }
13875 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13876 }
13877
13878 wdev_lock(dev->ieee80211_ptr);
13879 ret = nl80211_key_allowed(dev->ieee80211_ptr);
13880 if (!ret)
13881 ret = rdev_set_qos_map(rdev, dev, qos_map);
13882 wdev_unlock(dev->ieee80211_ptr);
13883
13884 kfree(qos_map);
13885 return ret;
13886 }
13887
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)13888 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13889 {
13890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13891 struct net_device *dev = info->user_ptr[1];
13892 struct wireless_dev *wdev = dev->ieee80211_ptr;
13893 const u8 *peer;
13894 u8 tsid, up;
13895 u16 admitted_time = 0;
13896 int err;
13897
13898 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13899 return -EOPNOTSUPP;
13900
13901 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13902 !info->attrs[NL80211_ATTR_USER_PRIO])
13903 return -EINVAL;
13904
13905 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13906 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13907
13908 /* WMM uses TIDs 0-7 even for TSPEC */
13909 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13910 /* TODO: handle 802.11 TSPEC/admission control
13911 * need more attributes for that (e.g. BA session requirement);
13912 * change the WMM adminssion test above to allow both then
13913 */
13914 return -EINVAL;
13915 }
13916
13917 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13918
13919 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13920 admitted_time =
13921 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13922 if (!admitted_time)
13923 return -EINVAL;
13924 }
13925
13926 wdev_lock(wdev);
13927 switch (wdev->iftype) {
13928 case NL80211_IFTYPE_STATION:
13929 case NL80211_IFTYPE_P2P_CLIENT:
13930 if (wdev->current_bss)
13931 break;
13932 err = -ENOTCONN;
13933 goto out;
13934 default:
13935 err = -EOPNOTSUPP;
13936 goto out;
13937 }
13938
13939 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13940
13941 out:
13942 wdev_unlock(wdev);
13943 return err;
13944 }
13945
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)13946 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13947 {
13948 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13949 struct net_device *dev = info->user_ptr[1];
13950 struct wireless_dev *wdev = dev->ieee80211_ptr;
13951 const u8 *peer;
13952 u8 tsid;
13953 int err;
13954
13955 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13956 return -EINVAL;
13957
13958 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13959 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13960
13961 wdev_lock(wdev);
13962 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13963 wdev_unlock(wdev);
13964
13965 return err;
13966 }
13967
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)13968 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13969 struct genl_info *info)
13970 {
13971 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13972 struct net_device *dev = info->user_ptr[1];
13973 struct wireless_dev *wdev = dev->ieee80211_ptr;
13974 struct cfg80211_chan_def chandef = {};
13975 const u8 *addr;
13976 u8 oper_class;
13977 int err;
13978
13979 if (!rdev->ops->tdls_channel_switch ||
13980 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13981 return -EOPNOTSUPP;
13982
13983 switch (dev->ieee80211_ptr->iftype) {
13984 case NL80211_IFTYPE_STATION:
13985 case NL80211_IFTYPE_P2P_CLIENT:
13986 break;
13987 default:
13988 return -EOPNOTSUPP;
13989 }
13990
13991 if (!info->attrs[NL80211_ATTR_MAC] ||
13992 !info->attrs[NL80211_ATTR_OPER_CLASS])
13993 return -EINVAL;
13994
13995 err = nl80211_parse_chandef(rdev, info, &chandef);
13996 if (err)
13997 return err;
13998
13999 /*
14000 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14001 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14002 * specification is not defined for them.
14003 */
14004 if (chandef.chan->band == NL80211_BAND_2GHZ &&
14005 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14006 chandef.width != NL80211_CHAN_WIDTH_20)
14007 return -EINVAL;
14008
14009 /* we will be active on the TDLS link */
14010 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14011 wdev->iftype))
14012 return -EINVAL;
14013
14014 /* don't allow switching to DFS channels */
14015 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14016 return -EINVAL;
14017
14018 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14019 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14020
14021 wdev_lock(wdev);
14022 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14023 wdev_unlock(wdev);
14024
14025 return err;
14026 }
14027
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)14028 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14029 struct genl_info *info)
14030 {
14031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14032 struct net_device *dev = info->user_ptr[1];
14033 struct wireless_dev *wdev = dev->ieee80211_ptr;
14034 const u8 *addr;
14035
14036 if (!rdev->ops->tdls_channel_switch ||
14037 !rdev->ops->tdls_cancel_channel_switch ||
14038 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14039 return -EOPNOTSUPP;
14040
14041 switch (dev->ieee80211_ptr->iftype) {
14042 case NL80211_IFTYPE_STATION:
14043 case NL80211_IFTYPE_P2P_CLIENT:
14044 break;
14045 default:
14046 return -EOPNOTSUPP;
14047 }
14048
14049 if (!info->attrs[NL80211_ATTR_MAC])
14050 return -EINVAL;
14051
14052 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14053
14054 wdev_lock(wdev);
14055 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14056 wdev_unlock(wdev);
14057
14058 return 0;
14059 }
14060
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)14061 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14062 struct genl_info *info)
14063 {
14064 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14065 struct net_device *dev = info->user_ptr[1];
14066 struct wireless_dev *wdev = dev->ieee80211_ptr;
14067 const struct nlattr *nla;
14068 bool enabled;
14069
14070 if (!rdev->ops->set_multicast_to_unicast)
14071 return -EOPNOTSUPP;
14072
14073 if (wdev->iftype != NL80211_IFTYPE_AP &&
14074 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14075 return -EOPNOTSUPP;
14076
14077 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14078 enabled = nla_get_flag(nla);
14079
14080 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14081 }
14082
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)14083 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14084 {
14085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14086 struct net_device *dev = info->user_ptr[1];
14087 struct wireless_dev *wdev = dev->ieee80211_ptr;
14088 struct cfg80211_pmk_conf pmk_conf = {};
14089 int ret;
14090
14091 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14092 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14093 return -EOPNOTSUPP;
14094
14095 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14096 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14097 return -EOPNOTSUPP;
14098
14099 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14100 return -EINVAL;
14101
14102 wdev_lock(wdev);
14103 if (!wdev->current_bss) {
14104 ret = -ENOTCONN;
14105 goto out;
14106 }
14107
14108 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14109 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14110 ret = -EINVAL;
14111 goto out;
14112 }
14113
14114 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14115 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14116 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14117 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14118 ret = -EINVAL;
14119 goto out;
14120 }
14121
14122 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14123 pmk_conf.pmk_r0_name =
14124 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14125
14126 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14127 out:
14128 wdev_unlock(wdev);
14129 return ret;
14130 }
14131
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)14132 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14133 {
14134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14135 struct net_device *dev = info->user_ptr[1];
14136 struct wireless_dev *wdev = dev->ieee80211_ptr;
14137 const u8 *aa;
14138 int ret;
14139
14140 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14141 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14142 return -EOPNOTSUPP;
14143
14144 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14145 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14146 return -EOPNOTSUPP;
14147
14148 if (!info->attrs[NL80211_ATTR_MAC])
14149 return -EINVAL;
14150
14151 wdev_lock(wdev);
14152 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14153 ret = rdev_del_pmk(rdev, dev, aa);
14154 wdev_unlock(wdev);
14155
14156 return ret;
14157 }
14158
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)14159 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14160 {
14161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14162 struct net_device *dev = info->user_ptr[1];
14163 struct cfg80211_external_auth_params params;
14164
14165 if (!rdev->ops->external_auth)
14166 return -EOPNOTSUPP;
14167
14168 if (!info->attrs[NL80211_ATTR_SSID] &&
14169 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14170 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14171 return -EINVAL;
14172
14173 if (!info->attrs[NL80211_ATTR_BSSID])
14174 return -EINVAL;
14175
14176 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14177 return -EINVAL;
14178
14179 memset(¶ms, 0, sizeof(params));
14180
14181 if (info->attrs[NL80211_ATTR_SSID]) {
14182 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14183 if (params.ssid.ssid_len == 0)
14184 return -EINVAL;
14185 memcpy(params.ssid.ssid,
14186 nla_data(info->attrs[NL80211_ATTR_SSID]),
14187 params.ssid.ssid_len);
14188 }
14189
14190 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14191 ETH_ALEN);
14192
14193 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14194
14195 if (info->attrs[NL80211_ATTR_PMKID])
14196 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14197
14198 return rdev_external_auth(rdev, dev, ¶ms);
14199 }
14200
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)14201 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14202 {
14203 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14205 struct net_device *dev = info->user_ptr[1];
14206 struct wireless_dev *wdev = dev->ieee80211_ptr;
14207 const u8 *buf;
14208 size_t len;
14209 u8 *dest;
14210 u16 proto;
14211 bool noencrypt;
14212 u64 cookie = 0;
14213 int err;
14214
14215 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14216 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14217 return -EOPNOTSUPP;
14218
14219 if (!rdev->ops->tx_control_port)
14220 return -EOPNOTSUPP;
14221
14222 if (!info->attrs[NL80211_ATTR_FRAME] ||
14223 !info->attrs[NL80211_ATTR_MAC] ||
14224 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14225 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14226 return -EINVAL;
14227 }
14228
14229 wdev_lock(wdev);
14230
14231 switch (wdev->iftype) {
14232 case NL80211_IFTYPE_AP:
14233 case NL80211_IFTYPE_P2P_GO:
14234 case NL80211_IFTYPE_MESH_POINT:
14235 break;
14236 case NL80211_IFTYPE_ADHOC:
14237 case NL80211_IFTYPE_STATION:
14238 case NL80211_IFTYPE_P2P_CLIENT:
14239 if (wdev->current_bss)
14240 break;
14241 err = -ENOTCONN;
14242 goto out;
14243 default:
14244 err = -EOPNOTSUPP;
14245 goto out;
14246 }
14247
14248 wdev_unlock(wdev);
14249
14250 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14251 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14252 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14253 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14254 noencrypt =
14255 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14256
14257 err = rdev_tx_control_port(rdev, dev, buf, len,
14258 dest, cpu_to_be16(proto), noencrypt,
14259 dont_wait_for_ack ? NULL : &cookie);
14260 if (!err && !dont_wait_for_ack)
14261 nl_set_extack_cookie_u64(info->extack, cookie);
14262 return err;
14263 out:
14264 wdev_unlock(wdev);
14265 return err;
14266 }
14267
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)14268 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14269 struct genl_info *info)
14270 {
14271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14272 struct net_device *dev = info->user_ptr[1];
14273 struct wireless_dev *wdev = dev->ieee80211_ptr;
14274 struct cfg80211_ftm_responder_stats ftm_stats = {};
14275 struct sk_buff *msg;
14276 void *hdr;
14277 struct nlattr *ftm_stats_attr;
14278 int err;
14279
14280 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14281 return -EOPNOTSUPP;
14282
14283 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14284 if (err)
14285 return err;
14286
14287 if (!ftm_stats.filled)
14288 return -ENODATA;
14289
14290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14291 if (!msg)
14292 return -ENOMEM;
14293
14294 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14295 NL80211_CMD_GET_FTM_RESPONDER_STATS);
14296 if (!hdr)
14297 goto nla_put_failure;
14298
14299 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14300 goto nla_put_failure;
14301
14302 ftm_stats_attr = nla_nest_start_noflag(msg,
14303 NL80211_ATTR_FTM_RESPONDER_STATS);
14304 if (!ftm_stats_attr)
14305 goto nla_put_failure;
14306
14307 #define SET_FTM(field, name, type) \
14308 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14309 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
14310 ftm_stats.field)) \
14311 goto nla_put_failure; } while (0)
14312 #define SET_FTM_U64(field, name) \
14313 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14314 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
14315 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
14316 goto nla_put_failure; } while (0)
14317
14318 SET_FTM(success_num, SUCCESS_NUM, u32);
14319 SET_FTM(partial_num, PARTIAL_NUM, u32);
14320 SET_FTM(failed_num, FAILED_NUM, u32);
14321 SET_FTM(asap_num, ASAP_NUM, u32);
14322 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14323 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14324 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14325 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14326 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14327 #undef SET_FTM
14328
14329 nla_nest_end(msg, ftm_stats_attr);
14330
14331 genlmsg_end(msg, hdr);
14332 return genlmsg_reply(msg, info);
14333
14334 nla_put_failure:
14335 nlmsg_free(msg);
14336 return -ENOBUFS;
14337 }
14338
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)14339 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14340 {
14341 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14342 struct cfg80211_update_owe_info owe_info;
14343 struct net_device *dev = info->user_ptr[1];
14344
14345 if (!rdev->ops->update_owe_info)
14346 return -EOPNOTSUPP;
14347
14348 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14349 !info->attrs[NL80211_ATTR_MAC])
14350 return -EINVAL;
14351
14352 memset(&owe_info, 0, sizeof(owe_info));
14353 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14354 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14355
14356 if (info->attrs[NL80211_ATTR_IE]) {
14357 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14358 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14359 }
14360
14361 return rdev_update_owe_info(rdev, dev, &owe_info);
14362 }
14363
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)14364 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14365 {
14366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14367 struct net_device *dev = info->user_ptr[1];
14368 struct wireless_dev *wdev = dev->ieee80211_ptr;
14369 struct station_info sinfo = {};
14370 const u8 *buf;
14371 size_t len;
14372 u8 *dest;
14373 int err;
14374
14375 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14376 return -EOPNOTSUPP;
14377
14378 if (!info->attrs[NL80211_ATTR_MAC] ||
14379 !info->attrs[NL80211_ATTR_FRAME]) {
14380 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14381 return -EINVAL;
14382 }
14383
14384 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14385 return -EOPNOTSUPP;
14386
14387 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14388 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14389 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14390
14391 if (len < sizeof(struct ethhdr))
14392 return -EINVAL;
14393
14394 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14395 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14396 return -EINVAL;
14397
14398 err = rdev_get_station(rdev, dev, dest, &sinfo);
14399 if (err)
14400 return err;
14401
14402 cfg80211_sinfo_release_content(&sinfo);
14403
14404 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14405 }
14406
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)14407 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14408 struct nlattr *attrs[], struct net_device *dev,
14409 struct cfg80211_tid_cfg *tid_conf,
14410 struct genl_info *info, const u8 *peer)
14411 {
14412 struct netlink_ext_ack *extack = info->extack;
14413 u64 mask;
14414 int err;
14415
14416 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14417 return -EINVAL;
14418
14419 tid_conf->config_override =
14420 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14421 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14422
14423 if (tid_conf->config_override) {
14424 if (rdev->ops->reset_tid_config) {
14425 err = rdev_reset_tid_config(rdev, dev, peer,
14426 tid_conf->tids);
14427 if (err)
14428 return err;
14429 } else {
14430 return -EINVAL;
14431 }
14432 }
14433
14434 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14435 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14436 tid_conf->noack =
14437 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14438 }
14439
14440 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14441 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14442 tid_conf->retry_short =
14443 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14444
14445 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14446 return -EINVAL;
14447 }
14448
14449 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14450 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14451 tid_conf->retry_long =
14452 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14453
14454 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14455 return -EINVAL;
14456 }
14457
14458 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14459 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14460 tid_conf->ampdu =
14461 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14462 }
14463
14464 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14465 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14466 tid_conf->rtscts =
14467 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14468 }
14469
14470 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14471 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14472 tid_conf->amsdu =
14473 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14474 }
14475
14476 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14477 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14478
14479 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14480
14481 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14482 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14483 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14484 &tid_conf->txrate_mask, dev);
14485 if (err)
14486 return err;
14487
14488 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14489 }
14490 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14491 }
14492
14493 if (peer)
14494 mask = rdev->wiphy.tid_config_support.peer;
14495 else
14496 mask = rdev->wiphy.tid_config_support.vif;
14497
14498 if (tid_conf->mask & ~mask) {
14499 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14500 return -ENOTSUPP;
14501 }
14502
14503 return 0;
14504 }
14505
nl80211_set_tid_config(struct sk_buff * skb,struct genl_info * info)14506 static int nl80211_set_tid_config(struct sk_buff *skb,
14507 struct genl_info *info)
14508 {
14509 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14510 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14511 struct net_device *dev = info->user_ptr[1];
14512 struct cfg80211_tid_config *tid_config;
14513 struct nlattr *tid;
14514 int conf_idx = 0, rem_conf;
14515 int ret = -EINVAL;
14516 u32 num_conf = 0;
14517
14518 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14519 return -EINVAL;
14520
14521 if (!rdev->ops->set_tid_config)
14522 return -EOPNOTSUPP;
14523
14524 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14525 rem_conf)
14526 num_conf++;
14527
14528 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14529 GFP_KERNEL);
14530 if (!tid_config)
14531 return -ENOMEM;
14532
14533 tid_config->n_tid_conf = num_conf;
14534
14535 if (info->attrs[NL80211_ATTR_MAC])
14536 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14537
14538 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14539 rem_conf) {
14540 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14541 tid, NULL, NULL);
14542
14543 if (ret)
14544 goto bad_tid_conf;
14545
14546 ret = parse_tid_conf(rdev, attrs, dev,
14547 &tid_config->tid_conf[conf_idx],
14548 info, tid_config->peer);
14549 if (ret)
14550 goto bad_tid_conf;
14551
14552 conf_idx++;
14553 }
14554
14555 ret = rdev_set_tid_config(rdev, dev, tid_config);
14556
14557 bad_tid_conf:
14558 kfree(tid_config);
14559 return ret;
14560 }
14561
14562 #define NL80211_FLAG_NEED_WIPHY 0x01
14563 #define NL80211_FLAG_NEED_NETDEV 0x02
14564 #define NL80211_FLAG_NEED_RTNL 0x04
14565 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
14566 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
14567 NL80211_FLAG_CHECK_NETDEV_UP)
14568 #define NL80211_FLAG_NEED_WDEV 0x10
14569 /* If a netdev is associated, it must be UP, P2P must be started */
14570 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
14571 NL80211_FLAG_CHECK_NETDEV_UP)
14572 #define NL80211_FLAG_CLEAR_SKB 0x20
14573
nl80211_pre_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)14574 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14575 struct genl_info *info)
14576 {
14577 struct cfg80211_registered_device *rdev;
14578 struct wireless_dev *wdev;
14579 struct net_device *dev;
14580 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14581
14582 if (rtnl)
14583 rtnl_lock();
14584
14585 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14586 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14587 if (IS_ERR(rdev)) {
14588 if (rtnl)
14589 rtnl_unlock();
14590 return PTR_ERR(rdev);
14591 }
14592 info->user_ptr[0] = rdev;
14593 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14594 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14595 ASSERT_RTNL();
14596
14597 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14598 info->attrs);
14599 if (IS_ERR(wdev)) {
14600 if (rtnl)
14601 rtnl_unlock();
14602 return PTR_ERR(wdev);
14603 }
14604
14605 dev = wdev->netdev;
14606 rdev = wiphy_to_rdev(wdev->wiphy);
14607
14608 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14609 if (!dev) {
14610 if (rtnl)
14611 rtnl_unlock();
14612 return -EINVAL;
14613 }
14614
14615 info->user_ptr[1] = dev;
14616 } else {
14617 info->user_ptr[1] = wdev;
14618 }
14619
14620 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14621 !wdev_running(wdev)) {
14622 if (rtnl)
14623 rtnl_unlock();
14624 return -ENETDOWN;
14625 }
14626
14627 if (dev)
14628 dev_hold(dev);
14629
14630 info->user_ptr[0] = rdev;
14631 }
14632
14633 return 0;
14634 }
14635
nl80211_post_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)14636 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14637 struct genl_info *info)
14638 {
14639 if (info->user_ptr[1]) {
14640 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14641 struct wireless_dev *wdev = info->user_ptr[1];
14642
14643 if (wdev->netdev)
14644 dev_put(wdev->netdev);
14645 } else {
14646 dev_put(info->user_ptr[1]);
14647 }
14648 }
14649
14650 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14651 rtnl_unlock();
14652
14653 /* If needed, clear the netlink message payload from the SKB
14654 * as it might contain key data that shouldn't stick around on
14655 * the heap after the SKB is freed. The netlink message header
14656 * is still needed for further processing, so leave it intact.
14657 */
14658 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14659 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14660
14661 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14662 }
14663 }
14664
14665 static const struct genl_ops nl80211_ops[] = {
14666 {
14667 .cmd = NL80211_CMD_GET_WIPHY,
14668 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14669 .doit = nl80211_get_wiphy,
14670 .dumpit = nl80211_dump_wiphy,
14671 .done = nl80211_dump_wiphy_done,
14672 /* can be retrieved by unprivileged users */
14673 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14674 NL80211_FLAG_NEED_RTNL,
14675 },
14676 };
14677
14678 static const struct genl_small_ops nl80211_small_ops[] = {
14679 {
14680 .cmd = NL80211_CMD_SET_WIPHY,
14681 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682 .doit = nl80211_set_wiphy,
14683 .flags = GENL_UNS_ADMIN_PERM,
14684 .internal_flags = NL80211_FLAG_NEED_RTNL,
14685 },
14686 {
14687 .cmd = NL80211_CMD_GET_INTERFACE,
14688 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14689 .doit = nl80211_get_interface,
14690 .dumpit = nl80211_dump_interface,
14691 /* can be retrieved by unprivileged users */
14692 .internal_flags = NL80211_FLAG_NEED_WDEV |
14693 NL80211_FLAG_NEED_RTNL,
14694 },
14695 {
14696 .cmd = NL80211_CMD_SET_INTERFACE,
14697 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14698 .doit = nl80211_set_interface,
14699 .flags = GENL_UNS_ADMIN_PERM,
14700 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14701 NL80211_FLAG_NEED_RTNL,
14702 },
14703 {
14704 .cmd = NL80211_CMD_NEW_INTERFACE,
14705 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14706 .doit = nl80211_new_interface,
14707 .flags = GENL_UNS_ADMIN_PERM,
14708 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14709 NL80211_FLAG_NEED_RTNL,
14710 },
14711 {
14712 .cmd = NL80211_CMD_DEL_INTERFACE,
14713 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14714 .doit = nl80211_del_interface,
14715 .flags = GENL_UNS_ADMIN_PERM,
14716 .internal_flags = NL80211_FLAG_NEED_WDEV |
14717 NL80211_FLAG_NEED_RTNL,
14718 },
14719 {
14720 .cmd = NL80211_CMD_GET_KEY,
14721 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14722 .doit = nl80211_get_key,
14723 .flags = GENL_UNS_ADMIN_PERM,
14724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14725 NL80211_FLAG_NEED_RTNL,
14726 },
14727 {
14728 .cmd = NL80211_CMD_SET_KEY,
14729 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14730 .doit = nl80211_set_key,
14731 .flags = GENL_UNS_ADMIN_PERM,
14732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14733 NL80211_FLAG_NEED_RTNL |
14734 NL80211_FLAG_CLEAR_SKB,
14735 },
14736 {
14737 .cmd = NL80211_CMD_NEW_KEY,
14738 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14739 .doit = nl80211_new_key,
14740 .flags = GENL_UNS_ADMIN_PERM,
14741 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14742 NL80211_FLAG_NEED_RTNL |
14743 NL80211_FLAG_CLEAR_SKB,
14744 },
14745 {
14746 .cmd = NL80211_CMD_DEL_KEY,
14747 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14748 .doit = nl80211_del_key,
14749 .flags = GENL_UNS_ADMIN_PERM,
14750 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14751 NL80211_FLAG_NEED_RTNL,
14752 },
14753 {
14754 .cmd = NL80211_CMD_SET_BEACON,
14755 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14756 .flags = GENL_UNS_ADMIN_PERM,
14757 .doit = nl80211_set_beacon,
14758 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14759 NL80211_FLAG_NEED_RTNL,
14760 },
14761 {
14762 .cmd = NL80211_CMD_START_AP,
14763 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14764 .flags = GENL_UNS_ADMIN_PERM,
14765 .doit = nl80211_start_ap,
14766 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14767 NL80211_FLAG_NEED_RTNL,
14768 },
14769 {
14770 .cmd = NL80211_CMD_STOP_AP,
14771 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14772 .flags = GENL_UNS_ADMIN_PERM,
14773 .doit = nl80211_stop_ap,
14774 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14775 NL80211_FLAG_NEED_RTNL,
14776 },
14777 {
14778 .cmd = NL80211_CMD_GET_STATION,
14779 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14780 .doit = nl80211_get_station,
14781 .dumpit = nl80211_dump_station,
14782 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14783 NL80211_FLAG_NEED_RTNL,
14784 },
14785 {
14786 .cmd = NL80211_CMD_SET_STATION,
14787 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14788 .doit = nl80211_set_station,
14789 .flags = GENL_UNS_ADMIN_PERM,
14790 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14791 NL80211_FLAG_NEED_RTNL,
14792 },
14793 {
14794 .cmd = NL80211_CMD_NEW_STATION,
14795 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14796 .doit = nl80211_new_station,
14797 .flags = GENL_UNS_ADMIN_PERM,
14798 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14799 NL80211_FLAG_NEED_RTNL,
14800 },
14801 {
14802 .cmd = NL80211_CMD_DEL_STATION,
14803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14804 .doit = nl80211_del_station,
14805 .flags = GENL_UNS_ADMIN_PERM,
14806 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14807 NL80211_FLAG_NEED_RTNL,
14808 },
14809 {
14810 .cmd = NL80211_CMD_GET_MPATH,
14811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14812 .doit = nl80211_get_mpath,
14813 .dumpit = nl80211_dump_mpath,
14814 .flags = GENL_UNS_ADMIN_PERM,
14815 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14816 NL80211_FLAG_NEED_RTNL,
14817 },
14818 {
14819 .cmd = NL80211_CMD_GET_MPP,
14820 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14821 .doit = nl80211_get_mpp,
14822 .dumpit = nl80211_dump_mpp,
14823 .flags = GENL_UNS_ADMIN_PERM,
14824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14825 NL80211_FLAG_NEED_RTNL,
14826 },
14827 {
14828 .cmd = NL80211_CMD_SET_MPATH,
14829 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14830 .doit = nl80211_set_mpath,
14831 .flags = GENL_UNS_ADMIN_PERM,
14832 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14833 NL80211_FLAG_NEED_RTNL,
14834 },
14835 {
14836 .cmd = NL80211_CMD_NEW_MPATH,
14837 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14838 .doit = nl80211_new_mpath,
14839 .flags = GENL_UNS_ADMIN_PERM,
14840 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14841 NL80211_FLAG_NEED_RTNL,
14842 },
14843 {
14844 .cmd = NL80211_CMD_DEL_MPATH,
14845 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14846 .doit = nl80211_del_mpath,
14847 .flags = GENL_UNS_ADMIN_PERM,
14848 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14849 NL80211_FLAG_NEED_RTNL,
14850 },
14851 {
14852 .cmd = NL80211_CMD_SET_BSS,
14853 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14854 .doit = nl80211_set_bss,
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_GET_REG,
14861 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14862 .doit = nl80211_get_reg_do,
14863 .dumpit = nl80211_get_reg_dump,
14864 .internal_flags = NL80211_FLAG_NEED_RTNL,
14865 /* can be retrieved by unprivileged users */
14866 },
14867 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14868 {
14869 .cmd = NL80211_CMD_SET_REG,
14870 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14871 .doit = nl80211_set_reg,
14872 .flags = GENL_ADMIN_PERM,
14873 .internal_flags = NL80211_FLAG_NEED_RTNL,
14874 },
14875 #endif
14876 {
14877 .cmd = NL80211_CMD_REQ_SET_REG,
14878 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14879 .doit = nl80211_req_set_reg,
14880 .flags = GENL_ADMIN_PERM,
14881 },
14882 {
14883 .cmd = NL80211_CMD_RELOAD_REGDB,
14884 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14885 .doit = nl80211_reload_regdb,
14886 .flags = GENL_ADMIN_PERM,
14887 },
14888 {
14889 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14890 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14891 .doit = nl80211_get_mesh_config,
14892 /* can be retrieved by unprivileged users */
14893 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14894 NL80211_FLAG_NEED_RTNL,
14895 },
14896 {
14897 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14898 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14899 .doit = nl80211_update_mesh_config,
14900 .flags = GENL_UNS_ADMIN_PERM,
14901 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14902 NL80211_FLAG_NEED_RTNL,
14903 },
14904 {
14905 .cmd = NL80211_CMD_TRIGGER_SCAN,
14906 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14907 .doit = nl80211_trigger_scan,
14908 .flags = GENL_UNS_ADMIN_PERM,
14909 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14910 NL80211_FLAG_NEED_RTNL,
14911 },
14912 {
14913 .cmd = NL80211_CMD_ABORT_SCAN,
14914 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14915 .doit = nl80211_abort_scan,
14916 .flags = GENL_UNS_ADMIN_PERM,
14917 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14918 NL80211_FLAG_NEED_RTNL,
14919 },
14920 {
14921 .cmd = NL80211_CMD_GET_SCAN,
14922 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14923 .dumpit = nl80211_dump_scan,
14924 },
14925 {
14926 .cmd = NL80211_CMD_START_SCHED_SCAN,
14927 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14928 .doit = nl80211_start_sched_scan,
14929 .flags = GENL_UNS_ADMIN_PERM,
14930 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14931 NL80211_FLAG_NEED_RTNL,
14932 },
14933 {
14934 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14935 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14936 .doit = nl80211_stop_sched_scan,
14937 .flags = GENL_UNS_ADMIN_PERM,
14938 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14939 NL80211_FLAG_NEED_RTNL,
14940 },
14941 {
14942 .cmd = NL80211_CMD_AUTHENTICATE,
14943 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14944 .doit = nl80211_authenticate,
14945 .flags = GENL_UNS_ADMIN_PERM,
14946 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14947 NL80211_FLAG_NEED_RTNL |
14948 NL80211_FLAG_CLEAR_SKB,
14949 },
14950 {
14951 .cmd = NL80211_CMD_ASSOCIATE,
14952 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14953 .doit = nl80211_associate,
14954 .flags = GENL_UNS_ADMIN_PERM,
14955 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14956 NL80211_FLAG_NEED_RTNL |
14957 NL80211_FLAG_CLEAR_SKB,
14958 },
14959 {
14960 .cmd = NL80211_CMD_DEAUTHENTICATE,
14961 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14962 .doit = nl80211_deauthenticate,
14963 .flags = GENL_UNS_ADMIN_PERM,
14964 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14965 NL80211_FLAG_NEED_RTNL,
14966 },
14967 {
14968 .cmd = NL80211_CMD_DISASSOCIATE,
14969 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14970 .doit = nl80211_disassociate,
14971 .flags = GENL_UNS_ADMIN_PERM,
14972 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14973 NL80211_FLAG_NEED_RTNL,
14974 },
14975 {
14976 .cmd = NL80211_CMD_JOIN_IBSS,
14977 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14978 .doit = nl80211_join_ibss,
14979 .flags = GENL_UNS_ADMIN_PERM,
14980 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14981 NL80211_FLAG_NEED_RTNL,
14982 },
14983 {
14984 .cmd = NL80211_CMD_LEAVE_IBSS,
14985 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14986 .doit = nl80211_leave_ibss,
14987 .flags = GENL_UNS_ADMIN_PERM,
14988 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14989 NL80211_FLAG_NEED_RTNL,
14990 },
14991 #ifdef CONFIG_NL80211_TESTMODE
14992 {
14993 .cmd = NL80211_CMD_TESTMODE,
14994 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14995 .doit = nl80211_testmode_do,
14996 .dumpit = nl80211_testmode_dump,
14997 .flags = GENL_UNS_ADMIN_PERM,
14998 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14999 NL80211_FLAG_NEED_RTNL,
15000 },
15001 #endif
15002 {
15003 .cmd = NL80211_CMD_CONNECT,
15004 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15005 .doit = nl80211_connect,
15006 .flags = GENL_UNS_ADMIN_PERM,
15007 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15008 NL80211_FLAG_NEED_RTNL |
15009 NL80211_FLAG_CLEAR_SKB,
15010 },
15011 {
15012 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15013 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15014 .doit = nl80211_update_connect_params,
15015 .flags = GENL_ADMIN_PERM,
15016 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15017 NL80211_FLAG_NEED_RTNL |
15018 NL80211_FLAG_CLEAR_SKB,
15019 },
15020 {
15021 .cmd = NL80211_CMD_DISCONNECT,
15022 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15023 .doit = nl80211_disconnect,
15024 .flags = GENL_UNS_ADMIN_PERM,
15025 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15026 NL80211_FLAG_NEED_RTNL,
15027 },
15028 {
15029 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15030 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15031 .doit = nl80211_wiphy_netns,
15032 .flags = GENL_UNS_ADMIN_PERM,
15033 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15034 NL80211_FLAG_NEED_RTNL,
15035 },
15036 {
15037 .cmd = NL80211_CMD_GET_SURVEY,
15038 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15039 .dumpit = nl80211_dump_survey,
15040 },
15041 {
15042 .cmd = NL80211_CMD_SET_PMKSA,
15043 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15044 .doit = nl80211_setdel_pmksa,
15045 .flags = GENL_UNS_ADMIN_PERM,
15046 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15047 NL80211_FLAG_NEED_RTNL |
15048 NL80211_FLAG_CLEAR_SKB,
15049 },
15050 {
15051 .cmd = NL80211_CMD_DEL_PMKSA,
15052 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15053 .doit = nl80211_setdel_pmksa,
15054 .flags = GENL_UNS_ADMIN_PERM,
15055 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15056 NL80211_FLAG_NEED_RTNL,
15057 },
15058 {
15059 .cmd = NL80211_CMD_FLUSH_PMKSA,
15060 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15061 .doit = nl80211_flush_pmksa,
15062 .flags = GENL_UNS_ADMIN_PERM,
15063 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15064 NL80211_FLAG_NEED_RTNL,
15065 },
15066 {
15067 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15068 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15069 .doit = nl80211_remain_on_channel,
15070 .flags = GENL_UNS_ADMIN_PERM,
15071 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15072 NL80211_FLAG_NEED_RTNL,
15073 },
15074 {
15075 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15076 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15077 .doit = nl80211_cancel_remain_on_channel,
15078 .flags = GENL_UNS_ADMIN_PERM,
15079 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15080 NL80211_FLAG_NEED_RTNL,
15081 },
15082 {
15083 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15084 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15085 .doit = nl80211_set_tx_bitrate_mask,
15086 .flags = GENL_UNS_ADMIN_PERM,
15087 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15088 NL80211_FLAG_NEED_RTNL,
15089 },
15090 {
15091 .cmd = NL80211_CMD_REGISTER_FRAME,
15092 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15093 .doit = nl80211_register_mgmt,
15094 .flags = GENL_UNS_ADMIN_PERM,
15095 .internal_flags = NL80211_FLAG_NEED_WDEV |
15096 NL80211_FLAG_NEED_RTNL,
15097 },
15098 {
15099 .cmd = NL80211_CMD_FRAME,
15100 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15101 .doit = nl80211_tx_mgmt,
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_FRAME_WAIT_CANCEL,
15108 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109 .doit = nl80211_tx_mgmt_cancel_wait,
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_POWER_SAVE,
15116 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15117 .doit = nl80211_set_power_save,
15118 .flags = GENL_UNS_ADMIN_PERM,
15119 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15120 NL80211_FLAG_NEED_RTNL,
15121 },
15122 {
15123 .cmd = NL80211_CMD_GET_POWER_SAVE,
15124 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15125 .doit = nl80211_get_power_save,
15126 /* can be retrieved by unprivileged users */
15127 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15128 NL80211_FLAG_NEED_RTNL,
15129 },
15130 {
15131 .cmd = NL80211_CMD_SET_CQM,
15132 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15133 .doit = nl80211_set_cqm,
15134 .flags = GENL_UNS_ADMIN_PERM,
15135 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15136 NL80211_FLAG_NEED_RTNL,
15137 },
15138 {
15139 .cmd = NL80211_CMD_SET_CHANNEL,
15140 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15141 .doit = nl80211_set_channel,
15142 .flags = GENL_UNS_ADMIN_PERM,
15143 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15144 NL80211_FLAG_NEED_RTNL,
15145 },
15146 {
15147 .cmd = NL80211_CMD_SET_WDS_PEER,
15148 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15149 .doit = nl80211_set_wds_peer,
15150 .flags = GENL_UNS_ADMIN_PERM,
15151 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15152 NL80211_FLAG_NEED_RTNL,
15153 },
15154 {
15155 .cmd = NL80211_CMD_JOIN_MESH,
15156 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15157 .doit = nl80211_join_mesh,
15158 .flags = GENL_UNS_ADMIN_PERM,
15159 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15160 NL80211_FLAG_NEED_RTNL,
15161 },
15162 {
15163 .cmd = NL80211_CMD_LEAVE_MESH,
15164 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15165 .doit = nl80211_leave_mesh,
15166 .flags = GENL_UNS_ADMIN_PERM,
15167 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15168 NL80211_FLAG_NEED_RTNL,
15169 },
15170 {
15171 .cmd = NL80211_CMD_JOIN_OCB,
15172 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15173 .doit = nl80211_join_ocb,
15174 .flags = GENL_UNS_ADMIN_PERM,
15175 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15176 NL80211_FLAG_NEED_RTNL,
15177 },
15178 {
15179 .cmd = NL80211_CMD_LEAVE_OCB,
15180 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15181 .doit = nl80211_leave_ocb,
15182 .flags = GENL_UNS_ADMIN_PERM,
15183 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15184 NL80211_FLAG_NEED_RTNL,
15185 },
15186 #ifdef CONFIG_PM
15187 {
15188 .cmd = NL80211_CMD_GET_WOWLAN,
15189 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15190 .doit = nl80211_get_wowlan,
15191 /* can be retrieved by unprivileged users */
15192 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15193 NL80211_FLAG_NEED_RTNL,
15194 },
15195 {
15196 .cmd = NL80211_CMD_SET_WOWLAN,
15197 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15198 .doit = nl80211_set_wowlan,
15199 .flags = GENL_UNS_ADMIN_PERM,
15200 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15201 NL80211_FLAG_NEED_RTNL,
15202 },
15203 #endif
15204 {
15205 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15206 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15207 .doit = nl80211_set_rekey_data,
15208 .flags = GENL_UNS_ADMIN_PERM,
15209 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15210 NL80211_FLAG_NEED_RTNL |
15211 NL80211_FLAG_CLEAR_SKB,
15212 },
15213 {
15214 .cmd = NL80211_CMD_TDLS_MGMT,
15215 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15216 .doit = nl80211_tdls_mgmt,
15217 .flags = GENL_UNS_ADMIN_PERM,
15218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15219 NL80211_FLAG_NEED_RTNL,
15220 },
15221 {
15222 .cmd = NL80211_CMD_TDLS_OPER,
15223 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15224 .doit = nl80211_tdls_oper,
15225 .flags = GENL_UNS_ADMIN_PERM,
15226 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15227 NL80211_FLAG_NEED_RTNL,
15228 },
15229 {
15230 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15231 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15232 .doit = nl80211_register_unexpected_frame,
15233 .flags = GENL_UNS_ADMIN_PERM,
15234 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15235 NL80211_FLAG_NEED_RTNL,
15236 },
15237 {
15238 .cmd = NL80211_CMD_PROBE_CLIENT,
15239 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15240 .doit = nl80211_probe_client,
15241 .flags = GENL_UNS_ADMIN_PERM,
15242 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15243 NL80211_FLAG_NEED_RTNL,
15244 },
15245 {
15246 .cmd = NL80211_CMD_REGISTER_BEACONS,
15247 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15248 .doit = nl80211_register_beacons,
15249 .flags = GENL_UNS_ADMIN_PERM,
15250 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15251 NL80211_FLAG_NEED_RTNL,
15252 },
15253 {
15254 .cmd = NL80211_CMD_SET_NOACK_MAP,
15255 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15256 .doit = nl80211_set_noack_map,
15257 .flags = GENL_UNS_ADMIN_PERM,
15258 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15259 NL80211_FLAG_NEED_RTNL,
15260 },
15261 {
15262 .cmd = NL80211_CMD_START_P2P_DEVICE,
15263 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15264 .doit = nl80211_start_p2p_device,
15265 .flags = GENL_UNS_ADMIN_PERM,
15266 .internal_flags = NL80211_FLAG_NEED_WDEV |
15267 NL80211_FLAG_NEED_RTNL,
15268 },
15269 {
15270 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15272 .doit = nl80211_stop_p2p_device,
15273 .flags = GENL_UNS_ADMIN_PERM,
15274 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15275 NL80211_FLAG_NEED_RTNL,
15276 },
15277 {
15278 .cmd = NL80211_CMD_START_NAN,
15279 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15280 .doit = nl80211_start_nan,
15281 .flags = GENL_ADMIN_PERM,
15282 .internal_flags = NL80211_FLAG_NEED_WDEV |
15283 NL80211_FLAG_NEED_RTNL,
15284 },
15285 {
15286 .cmd = NL80211_CMD_STOP_NAN,
15287 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15288 .doit = nl80211_stop_nan,
15289 .flags = GENL_ADMIN_PERM,
15290 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15291 NL80211_FLAG_NEED_RTNL,
15292 },
15293 {
15294 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15295 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15296 .doit = nl80211_nan_add_func,
15297 .flags = GENL_ADMIN_PERM,
15298 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15299 NL80211_FLAG_NEED_RTNL,
15300 },
15301 {
15302 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15303 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15304 .doit = nl80211_nan_del_func,
15305 .flags = GENL_ADMIN_PERM,
15306 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15307 NL80211_FLAG_NEED_RTNL,
15308 },
15309 {
15310 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15311 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15312 .doit = nl80211_nan_change_config,
15313 .flags = GENL_ADMIN_PERM,
15314 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15315 NL80211_FLAG_NEED_RTNL,
15316 },
15317 {
15318 .cmd = NL80211_CMD_SET_MCAST_RATE,
15319 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15320 .doit = nl80211_set_mcast_rate,
15321 .flags = GENL_UNS_ADMIN_PERM,
15322 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15323 NL80211_FLAG_NEED_RTNL,
15324 },
15325 {
15326 .cmd = NL80211_CMD_SET_MAC_ACL,
15327 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15328 .doit = nl80211_set_mac_acl,
15329 .flags = GENL_UNS_ADMIN_PERM,
15330 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15331 NL80211_FLAG_NEED_RTNL,
15332 },
15333 {
15334 .cmd = NL80211_CMD_RADAR_DETECT,
15335 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15336 .doit = nl80211_start_radar_detection,
15337 .flags = GENL_UNS_ADMIN_PERM,
15338 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15339 NL80211_FLAG_NEED_RTNL,
15340 },
15341 {
15342 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15343 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15344 .doit = nl80211_get_protocol_features,
15345 },
15346 {
15347 .cmd = NL80211_CMD_UPDATE_FT_IES,
15348 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15349 .doit = nl80211_update_ft_ies,
15350 .flags = GENL_UNS_ADMIN_PERM,
15351 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15352 NL80211_FLAG_NEED_RTNL,
15353 },
15354 {
15355 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15356 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15357 .doit = nl80211_crit_protocol_start,
15358 .flags = GENL_UNS_ADMIN_PERM,
15359 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15360 NL80211_FLAG_NEED_RTNL,
15361 },
15362 {
15363 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15364 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15365 .doit = nl80211_crit_protocol_stop,
15366 .flags = GENL_UNS_ADMIN_PERM,
15367 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15368 NL80211_FLAG_NEED_RTNL,
15369 },
15370 {
15371 .cmd = NL80211_CMD_GET_COALESCE,
15372 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15373 .doit = nl80211_get_coalesce,
15374 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15375 NL80211_FLAG_NEED_RTNL,
15376 },
15377 {
15378 .cmd = NL80211_CMD_SET_COALESCE,
15379 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15380 .doit = nl80211_set_coalesce,
15381 .flags = GENL_UNS_ADMIN_PERM,
15382 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15383 NL80211_FLAG_NEED_RTNL,
15384 },
15385 {
15386 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15387 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15388 .doit = nl80211_channel_switch,
15389 .flags = GENL_UNS_ADMIN_PERM,
15390 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15391 NL80211_FLAG_NEED_RTNL,
15392 },
15393 {
15394 .cmd = NL80211_CMD_VENDOR,
15395 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15396 .doit = nl80211_vendor_cmd,
15397 .dumpit = nl80211_vendor_cmd_dump,
15398 .flags = GENL_UNS_ADMIN_PERM,
15399 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15400 NL80211_FLAG_NEED_RTNL |
15401 NL80211_FLAG_CLEAR_SKB,
15402 },
15403 {
15404 .cmd = NL80211_CMD_SET_QOS_MAP,
15405 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15406 .doit = nl80211_set_qos_map,
15407 .flags = GENL_UNS_ADMIN_PERM,
15408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15409 NL80211_FLAG_NEED_RTNL,
15410 },
15411 {
15412 .cmd = NL80211_CMD_ADD_TX_TS,
15413 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15414 .doit = nl80211_add_tx_ts,
15415 .flags = GENL_UNS_ADMIN_PERM,
15416 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15417 NL80211_FLAG_NEED_RTNL,
15418 },
15419 {
15420 .cmd = NL80211_CMD_DEL_TX_TS,
15421 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15422 .doit = nl80211_del_tx_ts,
15423 .flags = GENL_UNS_ADMIN_PERM,
15424 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15425 NL80211_FLAG_NEED_RTNL,
15426 },
15427 {
15428 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15429 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15430 .doit = nl80211_tdls_channel_switch,
15431 .flags = GENL_UNS_ADMIN_PERM,
15432 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15433 NL80211_FLAG_NEED_RTNL,
15434 },
15435 {
15436 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15437 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15438 .doit = nl80211_tdls_cancel_channel_switch,
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_SET_MULTICAST_TO_UNICAST,
15445 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15446 .doit = nl80211_set_multicast_to_unicast,
15447 .flags = GENL_UNS_ADMIN_PERM,
15448 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15449 NL80211_FLAG_NEED_RTNL,
15450 },
15451 {
15452 .cmd = NL80211_CMD_SET_PMK,
15453 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15454 .doit = nl80211_set_pmk,
15455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15456 NL80211_FLAG_NEED_RTNL |
15457 NL80211_FLAG_CLEAR_SKB,
15458 },
15459 {
15460 .cmd = NL80211_CMD_DEL_PMK,
15461 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15462 .doit = nl80211_del_pmk,
15463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15464 NL80211_FLAG_NEED_RTNL,
15465 },
15466 {
15467 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15468 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15469 .doit = nl80211_external_auth,
15470 .flags = GENL_ADMIN_PERM,
15471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15472 NL80211_FLAG_NEED_RTNL,
15473 },
15474 {
15475 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15476 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15477 .doit = nl80211_tx_control_port,
15478 .flags = GENL_UNS_ADMIN_PERM,
15479 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15480 NL80211_FLAG_NEED_RTNL,
15481 },
15482 {
15483 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15484 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15485 .doit = nl80211_get_ftm_responder_stats,
15486 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15487 NL80211_FLAG_NEED_RTNL,
15488 },
15489 {
15490 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15491 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15492 .doit = nl80211_pmsr_start,
15493 .flags = GENL_UNS_ADMIN_PERM,
15494 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15495 NL80211_FLAG_NEED_RTNL,
15496 },
15497 {
15498 .cmd = NL80211_CMD_NOTIFY_RADAR,
15499 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15500 .doit = nl80211_notify_radar_detection,
15501 .flags = GENL_UNS_ADMIN_PERM,
15502 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15503 NL80211_FLAG_NEED_RTNL,
15504 },
15505 {
15506 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15507 .doit = nl80211_update_owe_info,
15508 .flags = GENL_ADMIN_PERM,
15509 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15510 NL80211_FLAG_NEED_RTNL,
15511 },
15512 {
15513 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15514 .doit = nl80211_probe_mesh_link,
15515 .flags = GENL_UNS_ADMIN_PERM,
15516 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15517 NL80211_FLAG_NEED_RTNL,
15518 },
15519 {
15520 .cmd = NL80211_CMD_SET_TID_CONFIG,
15521 .doit = nl80211_set_tid_config,
15522 .flags = GENL_UNS_ADMIN_PERM,
15523 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15524 NL80211_FLAG_NEED_RTNL,
15525 },
15526 };
15527
15528 static struct genl_family nl80211_fam __ro_after_init = {
15529 .name = NL80211_GENL_NAME, /* have users key off the name instead */
15530 .hdrsize = 0, /* no private header */
15531 .version = 1, /* no particular meaning now */
15532 .maxattr = NL80211_ATTR_MAX,
15533 .policy = nl80211_policy,
15534 .netnsok = true,
15535 .pre_doit = nl80211_pre_doit,
15536 .post_doit = nl80211_post_doit,
15537 .module = THIS_MODULE,
15538 .ops = nl80211_ops,
15539 .n_ops = ARRAY_SIZE(nl80211_ops),
15540 .small_ops = nl80211_small_ops,
15541 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15542 .mcgrps = nl80211_mcgrps,
15543 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15544 .parallel_ops = true,
15545 };
15546
15547 /* notification functions */
15548
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)15549 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15550 enum nl80211_commands cmd)
15551 {
15552 struct sk_buff *msg;
15553 struct nl80211_dump_wiphy_state state = {};
15554
15555 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15556 cmd != NL80211_CMD_DEL_WIPHY);
15557
15558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15559 if (!msg)
15560 return;
15561
15562 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15563 nlmsg_free(msg);
15564 return;
15565 }
15566
15567 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15568 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15569 }
15570
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)15571 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15572 struct wireless_dev *wdev,
15573 enum nl80211_commands cmd)
15574 {
15575 struct sk_buff *msg;
15576
15577 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15578 if (!msg)
15579 return;
15580
15581 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15582 nlmsg_free(msg);
15583 return;
15584 }
15585
15586 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15587 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15588 }
15589
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)15590 static int nl80211_add_scan_req(struct sk_buff *msg,
15591 struct cfg80211_registered_device *rdev)
15592 {
15593 struct cfg80211_scan_request *req = rdev->scan_req;
15594 struct nlattr *nest;
15595 int i;
15596 struct cfg80211_scan_info *info;
15597
15598 if (WARN_ON(!req))
15599 return 0;
15600
15601 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15602 if (!nest)
15603 goto nla_put_failure;
15604 for (i = 0; i < req->n_ssids; i++) {
15605 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15606 goto nla_put_failure;
15607 }
15608 nla_nest_end(msg, nest);
15609
15610 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15611 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15612 if (!nest)
15613 goto nla_put_failure;
15614 for (i = 0; i < req->n_channels; i++) {
15615 if (nla_put_u32(msg, i,
15616 ieee80211_channel_to_khz(req->channels[i])))
15617 goto nla_put_failure;
15618 }
15619 nla_nest_end(msg, nest);
15620 } else {
15621 nest = nla_nest_start_noflag(msg,
15622 NL80211_ATTR_SCAN_FREQUENCIES);
15623 if (!nest)
15624 goto nla_put_failure;
15625 for (i = 0; i < req->n_channels; i++) {
15626 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15627 goto nla_put_failure;
15628 }
15629 nla_nest_end(msg, nest);
15630 }
15631
15632 if (req->ie &&
15633 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15634 goto nla_put_failure;
15635
15636 if (req->flags &&
15637 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15638 goto nla_put_failure;
15639
15640 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15641 &rdev->scan_req->info;
15642 if (info->scan_start_tsf &&
15643 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15644 info->scan_start_tsf, NL80211_BSS_PAD) ||
15645 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15646 info->tsf_bssid)))
15647 goto nla_put_failure;
15648
15649 return 0;
15650 nla_put_failure:
15651 return -ENOBUFS;
15652 }
15653
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)15654 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15655 struct cfg80211_registered_device *rdev,
15656 struct wireless_dev *wdev,
15657 u32 portid, u32 seq, int flags,
15658 u32 cmd)
15659 {
15660 void *hdr;
15661
15662 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15663 if (!hdr)
15664 return -1;
15665
15666 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15667 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15668 wdev->netdev->ifindex)) ||
15669 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15670 NL80211_ATTR_PAD))
15671 goto nla_put_failure;
15672
15673 /* ignore errors and send incomplete event anyway */
15674 nl80211_add_scan_req(msg, rdev);
15675
15676 genlmsg_end(msg, hdr);
15677 return 0;
15678
15679 nla_put_failure:
15680 genlmsg_cancel(msg, hdr);
15681 return -EMSGSIZE;
15682 }
15683
15684 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)15685 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15686 struct cfg80211_sched_scan_request *req, u32 cmd)
15687 {
15688 void *hdr;
15689
15690 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15691 if (!hdr)
15692 return -1;
15693
15694 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15695 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15696 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15697 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15698 NL80211_ATTR_PAD))
15699 goto nla_put_failure;
15700
15701 genlmsg_end(msg, hdr);
15702 return 0;
15703
15704 nla_put_failure:
15705 genlmsg_cancel(msg, hdr);
15706 return -EMSGSIZE;
15707 }
15708
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)15709 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15710 struct wireless_dev *wdev)
15711 {
15712 struct sk_buff *msg;
15713
15714 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15715 if (!msg)
15716 return;
15717
15718 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15719 NL80211_CMD_TRIGGER_SCAN) < 0) {
15720 nlmsg_free(msg);
15721 return;
15722 }
15723
15724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15725 NL80211_MCGRP_SCAN, GFP_KERNEL);
15726 }
15727
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)15728 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15729 struct wireless_dev *wdev, bool aborted)
15730 {
15731 struct sk_buff *msg;
15732
15733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15734 if (!msg)
15735 return NULL;
15736
15737 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15738 aborted ? NL80211_CMD_SCAN_ABORTED :
15739 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15740 nlmsg_free(msg);
15741 return NULL;
15742 }
15743
15744 return msg;
15745 }
15746
15747 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)15748 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15749 struct sk_buff *msg)
15750 {
15751 if (!msg)
15752 return;
15753
15754 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15755 NL80211_MCGRP_SCAN, GFP_KERNEL);
15756 }
15757
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)15758 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15759 {
15760 struct sk_buff *msg;
15761
15762 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15763 if (!msg)
15764 return;
15765
15766 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15767 nlmsg_free(msg);
15768 return;
15769 }
15770
15771 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15772 NL80211_MCGRP_SCAN, GFP_KERNEL);
15773 }
15774
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)15775 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15776 struct regulatory_request *request)
15777 {
15778 /* Userspace can always count this one always being set */
15779 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15780 goto nla_put_failure;
15781
15782 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15783 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15784 NL80211_REGDOM_TYPE_WORLD))
15785 goto nla_put_failure;
15786 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15787 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15788 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15789 goto nla_put_failure;
15790 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15791 request->intersect) {
15792 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15793 NL80211_REGDOM_TYPE_INTERSECTION))
15794 goto nla_put_failure;
15795 } else {
15796 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15797 NL80211_REGDOM_TYPE_COUNTRY) ||
15798 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15799 request->alpha2))
15800 goto nla_put_failure;
15801 }
15802
15803 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15804 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15805
15806 if (wiphy &&
15807 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15808 goto nla_put_failure;
15809
15810 if (wiphy &&
15811 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15812 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15813 goto nla_put_failure;
15814 }
15815
15816 return true;
15817
15818 nla_put_failure:
15819 return false;
15820 }
15821
15822 /*
15823 * This can happen on global regulatory changes or device specific settings
15824 * based on custom regulatory domains.
15825 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)15826 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15827 struct regulatory_request *request)
15828 {
15829 struct sk_buff *msg;
15830 void *hdr;
15831
15832 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15833 if (!msg)
15834 return;
15835
15836 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15837 if (!hdr)
15838 goto nla_put_failure;
15839
15840 if (!nl80211_reg_change_event_fill(msg, request))
15841 goto nla_put_failure;
15842
15843 genlmsg_end(msg, hdr);
15844
15845 rcu_read_lock();
15846 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15847 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15848 rcu_read_unlock();
15849
15850 return;
15851
15852 nla_put_failure:
15853 nlmsg_free(msg);
15854 }
15855
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)15856 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15857 struct net_device *netdev,
15858 const u8 *buf, size_t len,
15859 enum nl80211_commands cmd, gfp_t gfp,
15860 int uapsd_queues, const u8 *req_ies,
15861 size_t req_ies_len)
15862 {
15863 struct sk_buff *msg;
15864 void *hdr;
15865
15866 msg = nlmsg_new(100 + len + req_ies_len, gfp);
15867 if (!msg)
15868 return;
15869
15870 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15871 if (!hdr) {
15872 nlmsg_free(msg);
15873 return;
15874 }
15875
15876 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15877 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15878 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15879 (req_ies &&
15880 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15881 goto nla_put_failure;
15882
15883 if (uapsd_queues >= 0) {
15884 struct nlattr *nla_wmm =
15885 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15886 if (!nla_wmm)
15887 goto nla_put_failure;
15888
15889 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15890 uapsd_queues))
15891 goto nla_put_failure;
15892
15893 nla_nest_end(msg, nla_wmm);
15894 }
15895
15896 genlmsg_end(msg, hdr);
15897
15898 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15899 NL80211_MCGRP_MLME, gfp);
15900 return;
15901
15902 nla_put_failure:
15903 nlmsg_free(msg);
15904 }
15905
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15906 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15907 struct net_device *netdev, const u8 *buf,
15908 size_t len, gfp_t gfp)
15909 {
15910 nl80211_send_mlme_event(rdev, netdev, buf, len,
15911 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15912 }
15913
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)15914 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15915 struct net_device *netdev, const u8 *buf,
15916 size_t len, gfp_t gfp, int uapsd_queues,
15917 const u8 *req_ies, size_t req_ies_len)
15918 {
15919 nl80211_send_mlme_event(rdev, netdev, buf, len,
15920 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15921 req_ies, req_ies_len);
15922 }
15923
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15924 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15925 struct net_device *netdev, const u8 *buf,
15926 size_t len, gfp_t gfp)
15927 {
15928 nl80211_send_mlme_event(rdev, netdev, buf, len,
15929 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15930 }
15931
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15932 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15933 struct net_device *netdev, const u8 *buf,
15934 size_t len, gfp_t gfp)
15935 {
15936 nl80211_send_mlme_event(rdev, netdev, buf, len,
15937 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15938 }
15939
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)15940 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15941 size_t len)
15942 {
15943 struct wireless_dev *wdev = dev->ieee80211_ptr;
15944 struct wiphy *wiphy = wdev->wiphy;
15945 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15946 const struct ieee80211_mgmt *mgmt = (void *)buf;
15947 u32 cmd;
15948
15949 if (WARN_ON(len < 2))
15950 return;
15951
15952 if (ieee80211_is_deauth(mgmt->frame_control)) {
15953 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15954 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15955 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15956 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15957 if (wdev->unprot_beacon_reported &&
15958 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15959 return;
15960 cmd = NL80211_CMD_UNPROT_BEACON;
15961 wdev->unprot_beacon_reported = jiffies;
15962 } else {
15963 return;
15964 }
15965
15966 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15967 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15968 NULL, 0);
15969 }
15970 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15971
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)15972 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15973 struct net_device *netdev, int cmd,
15974 const u8 *addr, gfp_t gfp)
15975 {
15976 struct sk_buff *msg;
15977 void *hdr;
15978
15979 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15980 if (!msg)
15981 return;
15982
15983 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15984 if (!hdr) {
15985 nlmsg_free(msg);
15986 return;
15987 }
15988
15989 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15990 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15991 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15992 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15993 goto nla_put_failure;
15994
15995 genlmsg_end(msg, hdr);
15996
15997 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15998 NL80211_MCGRP_MLME, gfp);
15999 return;
16000
16001 nla_put_failure:
16002 nlmsg_free(msg);
16003 }
16004
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)16005 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16006 struct net_device *netdev, const u8 *addr,
16007 gfp_t gfp)
16008 {
16009 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16010 addr, gfp);
16011 }
16012
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)16013 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16014 struct net_device *netdev, const u8 *addr,
16015 gfp_t gfp)
16016 {
16017 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16018 addr, gfp);
16019 }
16020
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)16021 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16022 struct net_device *netdev,
16023 struct cfg80211_connect_resp_params *cr,
16024 gfp_t gfp)
16025 {
16026 struct sk_buff *msg;
16027 void *hdr;
16028
16029 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16030 cr->fils.kek_len + cr->fils.pmk_len +
16031 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16032 if (!msg)
16033 return;
16034
16035 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16036 if (!hdr) {
16037 nlmsg_free(msg);
16038 return;
16039 }
16040
16041 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16042 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16043 (cr->bssid &&
16044 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16045 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16046 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16047 cr->status) ||
16048 (cr->status < 0 &&
16049 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16050 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16051 cr->timeout_reason))) ||
16052 (cr->req_ie &&
16053 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16054 (cr->resp_ie &&
16055 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16056 cr->resp_ie)) ||
16057 (cr->fils.update_erp_next_seq_num &&
16058 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16059 cr->fils.erp_next_seq_num)) ||
16060 (cr->status == WLAN_STATUS_SUCCESS &&
16061 ((cr->fils.kek &&
16062 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16063 cr->fils.kek)) ||
16064 (cr->fils.pmk &&
16065 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16066 (cr->fils.pmkid &&
16067 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16068 goto nla_put_failure;
16069
16070 genlmsg_end(msg, hdr);
16071
16072 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16073 NL80211_MCGRP_MLME, gfp);
16074 return;
16075
16076 nla_put_failure:
16077 nlmsg_free(msg);
16078 }
16079
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)16080 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16081 struct net_device *netdev,
16082 struct cfg80211_roam_info *info, gfp_t gfp)
16083 {
16084 struct sk_buff *msg;
16085 void *hdr;
16086 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16087
16088 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16089 info->fils.kek_len + info->fils.pmk_len +
16090 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16091 if (!msg)
16092 return;
16093
16094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16095 if (!hdr) {
16096 nlmsg_free(msg);
16097 return;
16098 }
16099
16100 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16101 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16102 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16103 (info->req_ie &&
16104 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16105 info->req_ie)) ||
16106 (info->resp_ie &&
16107 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16108 info->resp_ie)) ||
16109 (info->fils.update_erp_next_seq_num &&
16110 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16111 info->fils.erp_next_seq_num)) ||
16112 (info->fils.kek &&
16113 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16114 info->fils.kek)) ||
16115 (info->fils.pmk &&
16116 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16117 (info->fils.pmkid &&
16118 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16119 goto nla_put_failure;
16120
16121 genlmsg_end(msg, hdr);
16122
16123 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16124 NL80211_MCGRP_MLME, gfp);
16125 return;
16126
16127 nla_put_failure:
16128 nlmsg_free(msg);
16129 }
16130
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid)16131 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16132 struct net_device *netdev, const u8 *bssid)
16133 {
16134 struct sk_buff *msg;
16135 void *hdr;
16136
16137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16138 if (!msg)
16139 return;
16140
16141 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16142 if (!hdr) {
16143 nlmsg_free(msg);
16144 return;
16145 }
16146
16147 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16148 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16149 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16150 goto nla_put_failure;
16151
16152 genlmsg_end(msg, hdr);
16153
16154 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16155 NL80211_MCGRP_MLME, GFP_KERNEL);
16156 return;
16157
16158 nla_put_failure:
16159 nlmsg_free(msg);
16160 }
16161
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)16162 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16163 struct net_device *netdev, u16 reason,
16164 const u8 *ie, size_t ie_len, bool from_ap)
16165 {
16166 struct sk_buff *msg;
16167 void *hdr;
16168
16169 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16170 if (!msg)
16171 return;
16172
16173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
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 (reason &&
16182 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16183 (from_ap &&
16184 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16185 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16186 goto nla_put_failure;
16187
16188 genlmsg_end(msg, hdr);
16189
16190 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16191 NL80211_MCGRP_MLME, GFP_KERNEL);
16192 return;
16193
16194 nla_put_failure:
16195 nlmsg_free(msg);
16196 }
16197
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)16198 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16199 struct net_device *netdev, const u8 *bssid,
16200 gfp_t gfp)
16201 {
16202 struct sk_buff *msg;
16203 void *hdr;
16204
16205 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16206 if (!msg)
16207 return;
16208
16209 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16210 if (!hdr) {
16211 nlmsg_free(msg);
16212 return;
16213 }
16214
16215 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16216 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16217 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
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);
16224 return;
16225
16226 nla_put_failure:
16227 nlmsg_free(msg);
16228 }
16229
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)16230 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16231 const u8 *ie, u8 ie_len,
16232 int sig_dbm, gfp_t gfp)
16233 {
16234 struct wireless_dev *wdev = dev->ieee80211_ptr;
16235 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16236 struct sk_buff *msg;
16237 void *hdr;
16238
16239 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16240 return;
16241
16242 trace_cfg80211_notify_new_peer_candidate(dev, addr);
16243
16244 msg = nlmsg_new(100 + ie_len, gfp);
16245 if (!msg)
16246 return;
16247
16248 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16249 if (!hdr) {
16250 nlmsg_free(msg);
16251 return;
16252 }
16253
16254 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16255 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16256 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16257 (ie_len && ie &&
16258 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16259 (sig_dbm &&
16260 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16261 goto nla_put_failure;
16262
16263 genlmsg_end(msg, hdr);
16264
16265 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16266 NL80211_MCGRP_MLME, gfp);
16267 return;
16268
16269 nla_put_failure:
16270 nlmsg_free(msg);
16271 }
16272 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16273
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)16274 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16275 struct net_device *netdev, const u8 *addr,
16276 enum nl80211_key_type key_type, int key_id,
16277 const u8 *tsc, gfp_t gfp)
16278 {
16279 struct sk_buff *msg;
16280 void *hdr;
16281
16282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16283 if (!msg)
16284 return;
16285
16286 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16287 if (!hdr) {
16288 nlmsg_free(msg);
16289 return;
16290 }
16291
16292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16294 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16295 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16296 (key_id != -1 &&
16297 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16298 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16299 goto nla_put_failure;
16300
16301 genlmsg_end(msg, hdr);
16302
16303 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16304 NL80211_MCGRP_MLME, gfp);
16305 return;
16306
16307 nla_put_failure:
16308 nlmsg_free(msg);
16309 }
16310
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)16311 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16312 struct ieee80211_channel *channel_before,
16313 struct ieee80211_channel *channel_after)
16314 {
16315 struct sk_buff *msg;
16316 void *hdr;
16317 struct nlattr *nl_freq;
16318
16319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16320 if (!msg)
16321 return;
16322
16323 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16324 if (!hdr) {
16325 nlmsg_free(msg);
16326 return;
16327 }
16328
16329 /*
16330 * Since we are applying the beacon hint to a wiphy we know its
16331 * wiphy_idx is valid
16332 */
16333 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16334 goto nla_put_failure;
16335
16336 /* Before */
16337 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16338 if (!nl_freq)
16339 goto nla_put_failure;
16340
16341 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16342 goto nla_put_failure;
16343 nla_nest_end(msg, nl_freq);
16344
16345 /* After */
16346 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16347 if (!nl_freq)
16348 goto nla_put_failure;
16349
16350 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16351 goto nla_put_failure;
16352 nla_nest_end(msg, nl_freq);
16353
16354 genlmsg_end(msg, hdr);
16355
16356 rcu_read_lock();
16357 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16358 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16359 rcu_read_unlock();
16360
16361 return;
16362
16363 nla_put_failure:
16364 nlmsg_free(msg);
16365 }
16366
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)16367 static void nl80211_send_remain_on_chan_event(
16368 int cmd, struct cfg80211_registered_device *rdev,
16369 struct wireless_dev *wdev, u64 cookie,
16370 struct ieee80211_channel *chan,
16371 unsigned int duration, gfp_t gfp)
16372 {
16373 struct sk_buff *msg;
16374 void *hdr;
16375
16376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16377 if (!msg)
16378 return;
16379
16380 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16381 if (!hdr) {
16382 nlmsg_free(msg);
16383 return;
16384 }
16385
16386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16387 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16388 wdev->netdev->ifindex)) ||
16389 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16390 NL80211_ATTR_PAD) ||
16391 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16392 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16393 NL80211_CHAN_NO_HT) ||
16394 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16395 NL80211_ATTR_PAD))
16396 goto nla_put_failure;
16397
16398 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16399 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16400 goto nla_put_failure;
16401
16402 genlmsg_end(msg, hdr);
16403
16404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16405 NL80211_MCGRP_MLME, gfp);
16406 return;
16407
16408 nla_put_failure:
16409 nlmsg_free(msg);
16410 }
16411
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)16412 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16413 struct ieee80211_channel *chan,
16414 unsigned int duration, gfp_t gfp)
16415 {
16416 struct wiphy *wiphy = wdev->wiphy;
16417 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16418
16419 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16420 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16421 rdev, wdev, cookie, chan,
16422 duration, gfp);
16423 }
16424 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16425
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)16426 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16427 struct ieee80211_channel *chan,
16428 gfp_t gfp)
16429 {
16430 struct wiphy *wiphy = wdev->wiphy;
16431 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16432
16433 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16434 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16435 rdev, wdev, cookie, chan, 0, gfp);
16436 }
16437 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16438
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)16439 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16440 struct ieee80211_channel *chan,
16441 gfp_t gfp)
16442 {
16443 struct wiphy *wiphy = wdev->wiphy;
16444 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16445
16446 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16447 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16448 rdev, wdev, cookie, chan, 0, gfp);
16449 }
16450 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16451
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)16452 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16453 struct station_info *sinfo, gfp_t gfp)
16454 {
16455 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16457 struct sk_buff *msg;
16458
16459 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16460
16461 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16462 if (!msg)
16463 return;
16464
16465 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16466 rdev, dev, mac_addr, sinfo) < 0) {
16467 nlmsg_free(msg);
16468 return;
16469 }
16470
16471 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16472 NL80211_MCGRP_MLME, gfp);
16473 }
16474 EXPORT_SYMBOL(cfg80211_new_sta);
16475
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)16476 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16477 struct station_info *sinfo, gfp_t gfp)
16478 {
16479 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16480 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16481 struct sk_buff *msg;
16482 struct station_info empty_sinfo = {};
16483
16484 if (!sinfo)
16485 sinfo = &empty_sinfo;
16486
16487 trace_cfg80211_del_sta(dev, mac_addr);
16488
16489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16490 if (!msg) {
16491 cfg80211_sinfo_release_content(sinfo);
16492 return;
16493 }
16494
16495 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16496 rdev, dev, mac_addr, sinfo) < 0) {
16497 nlmsg_free(msg);
16498 return;
16499 }
16500
16501 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16502 NL80211_MCGRP_MLME, gfp);
16503 }
16504 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16505
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)16506 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16507 enum nl80211_connect_failed_reason reason,
16508 gfp_t gfp)
16509 {
16510 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16511 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16512 struct sk_buff *msg;
16513 void *hdr;
16514
16515 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16516 if (!msg)
16517 return;
16518
16519 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16520 if (!hdr) {
16521 nlmsg_free(msg);
16522 return;
16523 }
16524
16525 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16526 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16527 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16528 goto nla_put_failure;
16529
16530 genlmsg_end(msg, hdr);
16531
16532 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16533 NL80211_MCGRP_MLME, gfp);
16534 return;
16535
16536 nla_put_failure:
16537 nlmsg_free(msg);
16538 }
16539 EXPORT_SYMBOL(cfg80211_conn_failed);
16540
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)16541 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16542 const u8 *addr, gfp_t gfp)
16543 {
16544 struct wireless_dev *wdev = dev->ieee80211_ptr;
16545 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16546 struct sk_buff *msg;
16547 void *hdr;
16548 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16549
16550 if (!nlportid)
16551 return false;
16552
16553 msg = nlmsg_new(100, gfp);
16554 if (!msg)
16555 return true;
16556
16557 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16558 if (!hdr) {
16559 nlmsg_free(msg);
16560 return true;
16561 }
16562
16563 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16564 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16565 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16566 goto nla_put_failure;
16567
16568 genlmsg_end(msg, hdr);
16569 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16570 return true;
16571
16572 nla_put_failure:
16573 nlmsg_free(msg);
16574 return true;
16575 }
16576
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)16577 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16578 const u8 *addr, gfp_t gfp)
16579 {
16580 struct wireless_dev *wdev = dev->ieee80211_ptr;
16581 bool ret;
16582
16583 trace_cfg80211_rx_spurious_frame(dev, addr);
16584
16585 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16586 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16587 trace_cfg80211_return_bool(false);
16588 return false;
16589 }
16590 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16591 addr, gfp);
16592 trace_cfg80211_return_bool(ret);
16593 return ret;
16594 }
16595 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16596
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)16597 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16598 const u8 *addr, gfp_t gfp)
16599 {
16600 struct wireless_dev *wdev = dev->ieee80211_ptr;
16601 bool ret;
16602
16603 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16604
16605 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16606 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16607 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16608 trace_cfg80211_return_bool(false);
16609 return false;
16610 }
16611 ret = __nl80211_unexpected_frame(dev,
16612 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16613 addr, gfp);
16614 trace_cfg80211_return_bool(ret);
16615 return ret;
16616 }
16617 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16618
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)16619 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16620 struct wireless_dev *wdev, u32 nlportid,
16621 int freq, int sig_dbm,
16622 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16623 {
16624 struct net_device *netdev = wdev->netdev;
16625 struct sk_buff *msg;
16626 void *hdr;
16627
16628 msg = nlmsg_new(100 + len, gfp);
16629 if (!msg)
16630 return -ENOMEM;
16631
16632 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16633 if (!hdr) {
16634 nlmsg_free(msg);
16635 return -ENOMEM;
16636 }
16637
16638 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16639 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16640 netdev->ifindex)) ||
16641 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16642 NL80211_ATTR_PAD) ||
16643 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16644 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16645 (sig_dbm &&
16646 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16647 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16648 (flags &&
16649 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16650 goto nla_put_failure;
16651
16652 genlmsg_end(msg, hdr);
16653
16654 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16655
16656 nla_put_failure:
16657 nlmsg_free(msg);
16658 return -ENOBUFS;
16659 }
16660
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)16661 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16662 const u8 *buf, size_t len, bool ack,
16663 gfp_t gfp, enum nl80211_commands command)
16664 {
16665 struct wiphy *wiphy = wdev->wiphy;
16666 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16667 struct net_device *netdev = wdev->netdev;
16668 struct sk_buff *msg;
16669 void *hdr;
16670
16671 if (command == NL80211_CMD_FRAME_TX_STATUS)
16672 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16673 else
16674 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16675
16676 msg = nlmsg_new(100 + len, gfp);
16677 if (!msg)
16678 return;
16679
16680 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16681 if (!hdr) {
16682 nlmsg_free(msg);
16683 return;
16684 }
16685
16686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16687 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16688 netdev->ifindex)) ||
16689 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16690 NL80211_ATTR_PAD) ||
16691 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16692 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16693 NL80211_ATTR_PAD) ||
16694 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16695 goto nla_put_failure;
16696
16697 genlmsg_end(msg, hdr);
16698
16699 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16700 NL80211_MCGRP_MLME, gfp);
16701 return;
16702
16703 nla_put_failure:
16704 nlmsg_free(msg);
16705 }
16706
cfg80211_control_port_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)16707 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16708 const u8 *buf, size_t len, bool ack,
16709 gfp_t gfp)
16710 {
16711 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16712 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16713 }
16714 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16715
cfg80211_mgmt_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)16716 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16717 const u8 *buf, size_t len, bool ack, gfp_t gfp)
16718 {
16719 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16720 NL80211_CMD_FRAME_TX_STATUS);
16721 }
16722 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16723
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,gfp_t gfp)16724 static int __nl80211_rx_control_port(struct net_device *dev,
16725 struct sk_buff *skb,
16726 bool unencrypted, gfp_t gfp)
16727 {
16728 struct wireless_dev *wdev = dev->ieee80211_ptr;
16729 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16730 struct ethhdr *ehdr = eth_hdr(skb);
16731 const u8 *addr = ehdr->h_source;
16732 u16 proto = be16_to_cpu(skb->protocol);
16733 struct sk_buff *msg;
16734 void *hdr;
16735 struct nlattr *frame;
16736
16737 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16738
16739 if (!nlportid)
16740 return -ENOENT;
16741
16742 msg = nlmsg_new(100 + skb->len, gfp);
16743 if (!msg)
16744 return -ENOMEM;
16745
16746 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16747 if (!hdr) {
16748 nlmsg_free(msg);
16749 return -ENOBUFS;
16750 }
16751
16752 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16753 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16754 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16755 NL80211_ATTR_PAD) ||
16756 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16757 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16758 (unencrypted && nla_put_flag(msg,
16759 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16760 goto nla_put_failure;
16761
16762 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16763 if (!frame)
16764 goto nla_put_failure;
16765
16766 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16767 genlmsg_end(msg, hdr);
16768
16769 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16770
16771 nla_put_failure:
16772 nlmsg_free(msg);
16773 return -ENOBUFS;
16774 }
16775
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted)16776 bool cfg80211_rx_control_port(struct net_device *dev,
16777 struct sk_buff *skb, bool unencrypted)
16778 {
16779 int ret;
16780
16781 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16782 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16783 trace_cfg80211_return_bool(ret == 0);
16784 return ret == 0;
16785 }
16786 EXPORT_SYMBOL(cfg80211_rx_control_port);
16787
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)16788 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16789 const char *mac, gfp_t gfp)
16790 {
16791 struct wireless_dev *wdev = dev->ieee80211_ptr;
16792 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16793 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16794 void **cb;
16795
16796 if (!msg)
16797 return NULL;
16798
16799 cb = (void **)msg->cb;
16800
16801 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16802 if (!cb[0]) {
16803 nlmsg_free(msg);
16804 return NULL;
16805 }
16806
16807 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16808 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16809 goto nla_put_failure;
16810
16811 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16812 goto nla_put_failure;
16813
16814 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16815 if (!cb[1])
16816 goto nla_put_failure;
16817
16818 cb[2] = rdev;
16819
16820 return msg;
16821 nla_put_failure:
16822 nlmsg_free(msg);
16823 return NULL;
16824 }
16825
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)16826 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16827 {
16828 void **cb = (void **)msg->cb;
16829 struct cfg80211_registered_device *rdev = cb[2];
16830
16831 nla_nest_end(msg, cb[1]);
16832 genlmsg_end(msg, cb[0]);
16833
16834 memset(msg->cb, 0, sizeof(msg->cb));
16835
16836 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16837 NL80211_MCGRP_MLME, gfp);
16838 }
16839
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)16840 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16841 enum nl80211_cqm_rssi_threshold_event rssi_event,
16842 s32 rssi_level, gfp_t gfp)
16843 {
16844 struct sk_buff *msg;
16845 struct wireless_dev *wdev = dev->ieee80211_ptr;
16846 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16847
16848 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16849
16850 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16851 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16852 return;
16853
16854 if (wdev->cqm_config) {
16855 wdev->cqm_config->last_rssi_event_value = rssi_level;
16856
16857 cfg80211_cqm_rssi_update(rdev, dev);
16858
16859 if (rssi_level == 0)
16860 rssi_level = wdev->cqm_config->last_rssi_event_value;
16861 }
16862
16863 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16864 if (!msg)
16865 return;
16866
16867 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16868 rssi_event))
16869 goto nla_put_failure;
16870
16871 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16872 rssi_level))
16873 goto nla_put_failure;
16874
16875 cfg80211_send_cqm(msg, gfp);
16876
16877 return;
16878
16879 nla_put_failure:
16880 nlmsg_free(msg);
16881 }
16882 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16883
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)16884 void cfg80211_cqm_txe_notify(struct net_device *dev,
16885 const u8 *peer, u32 num_packets,
16886 u32 rate, u32 intvl, gfp_t gfp)
16887 {
16888 struct sk_buff *msg;
16889
16890 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16891 if (!msg)
16892 return;
16893
16894 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16895 goto nla_put_failure;
16896
16897 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16898 goto nla_put_failure;
16899
16900 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16901 goto nla_put_failure;
16902
16903 cfg80211_send_cqm(msg, gfp);
16904 return;
16905
16906 nla_put_failure:
16907 nlmsg_free(msg);
16908 }
16909 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16910
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)16911 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16912 const u8 *peer, u32 num_packets, gfp_t gfp)
16913 {
16914 struct sk_buff *msg;
16915
16916 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16917
16918 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16919 if (!msg)
16920 return;
16921
16922 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16923 goto nla_put_failure;
16924
16925 cfg80211_send_cqm(msg, gfp);
16926 return;
16927
16928 nla_put_failure:
16929 nlmsg_free(msg);
16930 }
16931 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16932
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)16933 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16934 {
16935 struct sk_buff *msg;
16936
16937 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16938 if (!msg)
16939 return;
16940
16941 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16942 goto nla_put_failure;
16943
16944 cfg80211_send_cqm(msg, gfp);
16945 return;
16946
16947 nla_put_failure:
16948 nlmsg_free(msg);
16949 }
16950 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16951
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)16952 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16953 struct net_device *netdev, const u8 *bssid,
16954 const u8 *replay_ctr, gfp_t gfp)
16955 {
16956 struct sk_buff *msg;
16957 struct nlattr *rekey_attr;
16958 void *hdr;
16959
16960 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16961 if (!msg)
16962 return;
16963
16964 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16965 if (!hdr) {
16966 nlmsg_free(msg);
16967 return;
16968 }
16969
16970 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16971 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16972 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16973 goto nla_put_failure;
16974
16975 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16976 if (!rekey_attr)
16977 goto nla_put_failure;
16978
16979 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16980 NL80211_REPLAY_CTR_LEN, replay_ctr))
16981 goto nla_put_failure;
16982
16983 nla_nest_end(msg, rekey_attr);
16984
16985 genlmsg_end(msg, hdr);
16986
16987 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16988 NL80211_MCGRP_MLME, gfp);
16989 return;
16990
16991 nla_put_failure:
16992 nlmsg_free(msg);
16993 }
16994
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)16995 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16996 const u8 *replay_ctr, gfp_t gfp)
16997 {
16998 struct wireless_dev *wdev = dev->ieee80211_ptr;
16999 struct wiphy *wiphy = wdev->wiphy;
17000 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17001
17002 trace_cfg80211_gtk_rekey_notify(dev, bssid);
17003 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17004 }
17005 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17006
17007 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)17008 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17009 struct net_device *netdev, int index,
17010 const u8 *bssid, bool preauth, gfp_t gfp)
17011 {
17012 struct sk_buff *msg;
17013 struct nlattr *attr;
17014 void *hdr;
17015
17016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17017 if (!msg)
17018 return;
17019
17020 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17021 if (!hdr) {
17022 nlmsg_free(msg);
17023 return;
17024 }
17025
17026 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17027 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17028 goto nla_put_failure;
17029
17030 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17031 if (!attr)
17032 goto nla_put_failure;
17033
17034 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17035 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17036 (preauth &&
17037 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17038 goto nla_put_failure;
17039
17040 nla_nest_end(msg, attr);
17041
17042 genlmsg_end(msg, hdr);
17043
17044 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17045 NL80211_MCGRP_MLME, gfp);
17046 return;
17047
17048 nla_put_failure:
17049 nlmsg_free(msg);
17050 }
17051
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)17052 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17053 const u8 *bssid, bool preauth, gfp_t gfp)
17054 {
17055 struct wireless_dev *wdev = dev->ieee80211_ptr;
17056 struct wiphy *wiphy = wdev->wiphy;
17057 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17058
17059 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17060 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17061 }
17062 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17063
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)17064 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17065 struct net_device *netdev,
17066 struct cfg80211_chan_def *chandef,
17067 gfp_t gfp,
17068 enum nl80211_commands notif,
17069 u8 count)
17070 {
17071 struct sk_buff *msg;
17072 void *hdr;
17073
17074 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17075 if (!msg)
17076 return;
17077
17078 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17079 if (!hdr) {
17080 nlmsg_free(msg);
17081 return;
17082 }
17083
17084 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17085 goto nla_put_failure;
17086
17087 if (nl80211_send_chandef(msg, chandef))
17088 goto nla_put_failure;
17089
17090 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
17091 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
17092 goto nla_put_failure;
17093
17094 genlmsg_end(msg, hdr);
17095
17096 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17097 NL80211_MCGRP_MLME, gfp);
17098 return;
17099
17100 nla_put_failure:
17101 nlmsg_free(msg);
17102 }
17103
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef)17104 void cfg80211_ch_switch_notify(struct net_device *dev,
17105 struct cfg80211_chan_def *chandef)
17106 {
17107 struct wireless_dev *wdev = dev->ieee80211_ptr;
17108 struct wiphy *wiphy = wdev->wiphy;
17109 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17110
17111 ASSERT_WDEV_LOCK(wdev);
17112
17113 trace_cfg80211_ch_switch_notify(dev, chandef);
17114
17115 wdev->chandef = *chandef;
17116 wdev->preset_chandef = *chandef;
17117
17118 if (wdev->iftype == NL80211_IFTYPE_STATION &&
17119 !WARN_ON(!wdev->current_bss))
17120 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17121
17122 cfg80211_sched_dfs_chan_update(rdev);
17123
17124 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17125 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
17126 }
17127 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17128
cfg80211_ch_switch_started_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,u8 count)17129 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17130 struct cfg80211_chan_def *chandef,
17131 u8 count)
17132 {
17133 struct wireless_dev *wdev = dev->ieee80211_ptr;
17134 struct wiphy *wiphy = wdev->wiphy;
17135 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17136
17137 trace_cfg80211_ch_switch_started_notify(dev, chandef);
17138
17139 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17140 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
17141 }
17142 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17143
17144 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)17145 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17146 const struct cfg80211_chan_def *chandef,
17147 enum nl80211_radar_event event,
17148 struct net_device *netdev, gfp_t gfp)
17149 {
17150 struct sk_buff *msg;
17151 void *hdr;
17152
17153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17154 if (!msg)
17155 return;
17156
17157 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17158 if (!hdr) {
17159 nlmsg_free(msg);
17160 return;
17161 }
17162
17163 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17164 goto nla_put_failure;
17165
17166 /* NOP and radar events don't need a netdev parameter */
17167 if (netdev) {
17168 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17169
17170 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17171 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17172 NL80211_ATTR_PAD))
17173 goto nla_put_failure;
17174 }
17175
17176 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17177 goto nla_put_failure;
17178
17179 if (nl80211_send_chandef(msg, chandef))
17180 goto nla_put_failure;
17181
17182 genlmsg_end(msg, hdr);
17183
17184 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17185 NL80211_MCGRP_MLME, gfp);
17186 return;
17187
17188 nla_put_failure:
17189 nlmsg_free(msg);
17190 }
17191
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)17192 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17193 struct sta_opmode_info *sta_opmode,
17194 gfp_t gfp)
17195 {
17196 struct sk_buff *msg;
17197 struct wireless_dev *wdev = dev->ieee80211_ptr;
17198 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17199 void *hdr;
17200
17201 if (WARN_ON(!mac))
17202 return;
17203
17204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17205 if (!msg)
17206 return;
17207
17208 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17209 if (!hdr) {
17210 nlmsg_free(msg);
17211 return;
17212 }
17213
17214 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17215 goto nla_put_failure;
17216
17217 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17218 goto nla_put_failure;
17219
17220 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17221 goto nla_put_failure;
17222
17223 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17224 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17225 goto nla_put_failure;
17226
17227 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17228 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17229 goto nla_put_failure;
17230
17231 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17232 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17233 goto nla_put_failure;
17234
17235 genlmsg_end(msg, hdr);
17236
17237 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17238 NL80211_MCGRP_MLME, gfp);
17239
17240 return;
17241
17242 nla_put_failure:
17243 nlmsg_free(msg);
17244 }
17245 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17246
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)17247 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17248 u64 cookie, bool acked, s32 ack_signal,
17249 bool is_valid_ack_signal, gfp_t gfp)
17250 {
17251 struct wireless_dev *wdev = dev->ieee80211_ptr;
17252 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17253 struct sk_buff *msg;
17254 void *hdr;
17255
17256 trace_cfg80211_probe_status(dev, addr, cookie, acked);
17257
17258 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17259
17260 if (!msg)
17261 return;
17262
17263 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17264 if (!hdr) {
17265 nlmsg_free(msg);
17266 return;
17267 }
17268
17269 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17270 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17271 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17272 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17273 NL80211_ATTR_PAD) ||
17274 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17275 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17276 ack_signal)))
17277 goto nla_put_failure;
17278
17279 genlmsg_end(msg, hdr);
17280
17281 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17282 NL80211_MCGRP_MLME, gfp);
17283 return;
17284
17285 nla_put_failure:
17286 nlmsg_free(msg);
17287 }
17288 EXPORT_SYMBOL(cfg80211_probe_status);
17289
cfg80211_report_obss_beacon_khz(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)17290 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17291 size_t len, int freq, int sig_dbm)
17292 {
17293 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17294 struct sk_buff *msg;
17295 void *hdr;
17296 struct cfg80211_beacon_registration *reg;
17297
17298 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17299
17300 spin_lock_bh(&rdev->beacon_registrations_lock);
17301 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17302 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17303 if (!msg) {
17304 spin_unlock_bh(&rdev->beacon_registrations_lock);
17305 return;
17306 }
17307
17308 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17309 if (!hdr)
17310 goto nla_put_failure;
17311
17312 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17313 (freq &&
17314 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17315 KHZ_TO_MHZ(freq)) ||
17316 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17317 freq % 1000))) ||
17318 (sig_dbm &&
17319 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17320 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17321 goto nla_put_failure;
17322
17323 genlmsg_end(msg, hdr);
17324
17325 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17326 }
17327 spin_unlock_bh(&rdev->beacon_registrations_lock);
17328 return;
17329
17330 nla_put_failure:
17331 spin_unlock_bh(&rdev->beacon_registrations_lock);
17332 nlmsg_free(msg);
17333 }
17334 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17335
17336 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)17337 static int cfg80211_net_detect_results(struct sk_buff *msg,
17338 struct cfg80211_wowlan_wakeup *wakeup)
17339 {
17340 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17341 struct nlattr *nl_results, *nl_match, *nl_freqs;
17342 int i, j;
17343
17344 nl_results = nla_nest_start_noflag(msg,
17345 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17346 if (!nl_results)
17347 return -EMSGSIZE;
17348
17349 for (i = 0; i < nd->n_matches; i++) {
17350 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17351
17352 nl_match = nla_nest_start_noflag(msg, i);
17353 if (!nl_match)
17354 break;
17355
17356 /* The SSID attribute is optional in nl80211, but for
17357 * simplicity reasons it's always present in the
17358 * cfg80211 structure. If a driver can't pass the
17359 * SSID, that needs to be changed. A zero length SSID
17360 * is still a valid SSID (wildcard), so it cannot be
17361 * used for this purpose.
17362 */
17363 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17364 match->ssid.ssid)) {
17365 nla_nest_cancel(msg, nl_match);
17366 goto out;
17367 }
17368
17369 if (match->n_channels) {
17370 nl_freqs = nla_nest_start_noflag(msg,
17371 NL80211_ATTR_SCAN_FREQUENCIES);
17372 if (!nl_freqs) {
17373 nla_nest_cancel(msg, nl_match);
17374 goto out;
17375 }
17376
17377 for (j = 0; j < match->n_channels; j++) {
17378 if (nla_put_u32(msg, j, match->channels[j])) {
17379 nla_nest_cancel(msg, nl_freqs);
17380 nla_nest_cancel(msg, nl_match);
17381 goto out;
17382 }
17383 }
17384
17385 nla_nest_end(msg, nl_freqs);
17386 }
17387
17388 nla_nest_end(msg, nl_match);
17389 }
17390
17391 out:
17392 nla_nest_end(msg, nl_results);
17393 return 0;
17394 }
17395
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)17396 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17397 struct cfg80211_wowlan_wakeup *wakeup,
17398 gfp_t gfp)
17399 {
17400 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17401 struct sk_buff *msg;
17402 void *hdr;
17403 int size = 200;
17404
17405 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17406
17407 if (wakeup)
17408 size += wakeup->packet_present_len;
17409
17410 msg = nlmsg_new(size, gfp);
17411 if (!msg)
17412 return;
17413
17414 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17415 if (!hdr)
17416 goto free_msg;
17417
17418 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17419 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17420 NL80211_ATTR_PAD))
17421 goto free_msg;
17422
17423 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17424 wdev->netdev->ifindex))
17425 goto free_msg;
17426
17427 if (wakeup) {
17428 struct nlattr *reasons;
17429
17430 reasons = nla_nest_start_noflag(msg,
17431 NL80211_ATTR_WOWLAN_TRIGGERS);
17432 if (!reasons)
17433 goto free_msg;
17434
17435 if (wakeup->disconnect &&
17436 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17437 goto free_msg;
17438 if (wakeup->magic_pkt &&
17439 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17440 goto free_msg;
17441 if (wakeup->gtk_rekey_failure &&
17442 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17443 goto free_msg;
17444 if (wakeup->eap_identity_req &&
17445 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17446 goto free_msg;
17447 if (wakeup->four_way_handshake &&
17448 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17449 goto free_msg;
17450 if (wakeup->rfkill_release &&
17451 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17452 goto free_msg;
17453
17454 if (wakeup->pattern_idx >= 0 &&
17455 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17456 wakeup->pattern_idx))
17457 goto free_msg;
17458
17459 if (wakeup->tcp_match &&
17460 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17461 goto free_msg;
17462
17463 if (wakeup->tcp_connlost &&
17464 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17465 goto free_msg;
17466
17467 if (wakeup->tcp_nomoretokens &&
17468 nla_put_flag(msg,
17469 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17470 goto free_msg;
17471
17472 if (wakeup->packet) {
17473 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17474 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17475
17476 if (!wakeup->packet_80211) {
17477 pkt_attr =
17478 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17479 len_attr =
17480 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17481 }
17482
17483 if (wakeup->packet_len &&
17484 nla_put_u32(msg, len_attr, wakeup->packet_len))
17485 goto free_msg;
17486
17487 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17488 wakeup->packet))
17489 goto free_msg;
17490 }
17491
17492 if (wakeup->net_detect &&
17493 cfg80211_net_detect_results(msg, wakeup))
17494 goto free_msg;
17495
17496 nla_nest_end(msg, reasons);
17497 }
17498
17499 genlmsg_end(msg, hdr);
17500
17501 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17502 NL80211_MCGRP_MLME, gfp);
17503 return;
17504
17505 free_msg:
17506 nlmsg_free(msg);
17507 }
17508 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17509 #endif
17510
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)17511 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17512 enum nl80211_tdls_operation oper,
17513 u16 reason_code, gfp_t gfp)
17514 {
17515 struct wireless_dev *wdev = dev->ieee80211_ptr;
17516 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17517 struct sk_buff *msg;
17518 void *hdr;
17519
17520 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17521 reason_code);
17522
17523 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17524 if (!msg)
17525 return;
17526
17527 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17528 if (!hdr) {
17529 nlmsg_free(msg);
17530 return;
17531 }
17532
17533 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17534 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17535 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17536 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17537 (reason_code > 0 &&
17538 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17539 goto nla_put_failure;
17540
17541 genlmsg_end(msg, hdr);
17542
17543 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17544 NL80211_MCGRP_MLME, gfp);
17545 return;
17546
17547 nla_put_failure:
17548 nlmsg_free(msg);
17549 }
17550 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17551
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)17552 static int nl80211_netlink_notify(struct notifier_block * nb,
17553 unsigned long state,
17554 void *_notify)
17555 {
17556 struct netlink_notify *notify = _notify;
17557 struct cfg80211_registered_device *rdev;
17558 struct wireless_dev *wdev;
17559 struct cfg80211_beacon_registration *reg, *tmp;
17560
17561 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17562 return NOTIFY_DONE;
17563
17564 rcu_read_lock();
17565
17566 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17567 struct cfg80211_sched_scan_request *sched_scan_req;
17568
17569 list_for_each_entry_rcu(sched_scan_req,
17570 &rdev->sched_scan_req_list,
17571 list) {
17572 if (sched_scan_req->owner_nlportid == notify->portid) {
17573 sched_scan_req->nl_owner_dead = true;
17574 schedule_work(&rdev->sched_scan_stop_wk);
17575 }
17576 }
17577
17578 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17579 cfg80211_mlme_unregister_socket(wdev, notify->portid);
17580
17581 if (wdev->owner_nlportid == notify->portid) {
17582 wdev->nl_owner_dead = true;
17583 schedule_work(&rdev->destroy_work);
17584 } else if (wdev->conn_owner_nlportid == notify->portid) {
17585 schedule_work(&wdev->disconnect_wk);
17586 }
17587
17588 cfg80211_release_pmsr(wdev, notify->portid);
17589 }
17590
17591 spin_lock_bh(&rdev->beacon_registrations_lock);
17592 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17593 list) {
17594 if (reg->nlportid == notify->portid) {
17595 list_del(®->list);
17596 kfree(reg);
17597 break;
17598 }
17599 }
17600 spin_unlock_bh(&rdev->beacon_registrations_lock);
17601 }
17602
17603 rcu_read_unlock();
17604
17605 /*
17606 * It is possible that the user space process that is controlling the
17607 * indoor setting disappeared, so notify the regulatory core.
17608 */
17609 regulatory_netlink_notify(notify->portid);
17610 return NOTIFY_OK;
17611 }
17612
17613 static struct notifier_block nl80211_netlink_notifier = {
17614 .notifier_call = nl80211_netlink_notify,
17615 };
17616
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)17617 void cfg80211_ft_event(struct net_device *netdev,
17618 struct cfg80211_ft_event_params *ft_event)
17619 {
17620 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17621 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17622 struct sk_buff *msg;
17623 void *hdr;
17624
17625 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17626
17627 if (!ft_event->target_ap)
17628 return;
17629
17630 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17631 GFP_KERNEL);
17632 if (!msg)
17633 return;
17634
17635 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17636 if (!hdr)
17637 goto out;
17638
17639 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17640 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17641 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17642 goto out;
17643
17644 if (ft_event->ies &&
17645 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17646 goto out;
17647 if (ft_event->ric_ies &&
17648 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17649 ft_event->ric_ies))
17650 goto out;
17651
17652 genlmsg_end(msg, hdr);
17653
17654 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17655 NL80211_MCGRP_MLME, GFP_KERNEL);
17656 return;
17657 out:
17658 nlmsg_free(msg);
17659 }
17660 EXPORT_SYMBOL(cfg80211_ft_event);
17661
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)17662 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17663 {
17664 struct cfg80211_registered_device *rdev;
17665 struct sk_buff *msg;
17666 void *hdr;
17667 u32 nlportid;
17668
17669 rdev = wiphy_to_rdev(wdev->wiphy);
17670 if (!rdev->crit_proto_nlportid)
17671 return;
17672
17673 nlportid = rdev->crit_proto_nlportid;
17674 rdev->crit_proto_nlportid = 0;
17675
17676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17677 if (!msg)
17678 return;
17679
17680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17681 if (!hdr)
17682 goto nla_put_failure;
17683
17684 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17685 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17686 NL80211_ATTR_PAD))
17687 goto nla_put_failure;
17688
17689 genlmsg_end(msg, hdr);
17690
17691 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17692 return;
17693
17694 nla_put_failure:
17695 nlmsg_free(msg);
17696 }
17697 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17698
nl80211_send_ap_stopped(struct wireless_dev * wdev)17699 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17700 {
17701 struct wiphy *wiphy = wdev->wiphy;
17702 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17703 struct sk_buff *msg;
17704 void *hdr;
17705
17706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17707 if (!msg)
17708 return;
17709
17710 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17711 if (!hdr)
17712 goto out;
17713
17714 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17715 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17716 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17717 NL80211_ATTR_PAD))
17718 goto out;
17719
17720 genlmsg_end(msg, hdr);
17721
17722 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17723 NL80211_MCGRP_MLME, GFP_KERNEL);
17724 return;
17725 out:
17726 nlmsg_free(msg);
17727 }
17728
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)17729 int cfg80211_external_auth_request(struct net_device *dev,
17730 struct cfg80211_external_auth_params *params,
17731 gfp_t gfp)
17732 {
17733 struct wireless_dev *wdev = dev->ieee80211_ptr;
17734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17735 struct sk_buff *msg;
17736 void *hdr;
17737
17738 if (!wdev->conn_owner_nlportid)
17739 return -EINVAL;
17740
17741 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17742 if (!msg)
17743 return -ENOMEM;
17744
17745 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17746 if (!hdr)
17747 goto nla_put_failure;
17748
17749 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17750 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17751 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17752 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17753 params->action) ||
17754 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17755 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17756 params->ssid.ssid))
17757 goto nla_put_failure;
17758
17759 genlmsg_end(msg, hdr);
17760 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17761 wdev->conn_owner_nlportid);
17762 return 0;
17763
17764 nla_put_failure:
17765 nlmsg_free(msg);
17766 return -ENOBUFS;
17767 }
17768 EXPORT_SYMBOL(cfg80211_external_auth_request);
17769
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)17770 void cfg80211_update_owe_info_event(struct net_device *netdev,
17771 struct cfg80211_update_owe_info *owe_info,
17772 gfp_t gfp)
17773 {
17774 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17775 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17776 struct sk_buff *msg;
17777 void *hdr;
17778
17779 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17780
17781 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17782 if (!msg)
17783 return;
17784
17785 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17786 if (!hdr)
17787 goto nla_put_failure;
17788
17789 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17790 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17791 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17792 goto nla_put_failure;
17793
17794 if (!owe_info->ie_len ||
17795 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17796 goto nla_put_failure;
17797
17798 genlmsg_end(msg, hdr);
17799
17800 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17801 NL80211_MCGRP_MLME, gfp);
17802 return;
17803
17804 nla_put_failure:
17805 genlmsg_cancel(msg, hdr);
17806 nlmsg_free(msg);
17807 }
17808 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17809
17810 /* initialisation/exit functions */
17811
nl80211_init(void)17812 int __init nl80211_init(void)
17813 {
17814 int err;
17815
17816 err = genl_register_family(&nl80211_fam);
17817 if (err)
17818 return err;
17819
17820 err = netlink_register_notifier(&nl80211_netlink_notifier);
17821 if (err)
17822 goto err_out;
17823
17824 return 0;
17825 err_out:
17826 genl_unregister_family(&nl80211_fam);
17827 return err;
17828 }
17829
nl80211_exit(void)17830 void nl80211_exit(void)
17831 {
17832 netlink_unregister_notifier(&nl80211_netlink_notifier);
17833 genl_unregister_family(&nl80211_fam);
17834 }
17835