1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2015 Intel Mobile Communications GmbH
6 * Copyright (C) 2015-2016 Intel Deutschland GmbH
7 *
8 * This file is GPLv2 as found in COPYING.
9 */
10
11 #include <linux/ieee80211.h>
12 #include <linux/nl80211.h>
13 #include <linux/rtnetlink.h>
14 #include <linux/slab.h>
15 #include <net/net_namespace.h>
16 #include <linux/rcupdate.h>
17 #include <linux/if_ether.h>
18 #include <net/cfg80211.h>
19 #include "ieee80211_i.h"
20 #include "driver-ops.h"
21 #include "rate.h"
22 #include "mesh.h"
23 #include "wme.h"
24
ieee80211_add_iface(struct wiphy * wiphy,const char * name,unsigned char name_assign_type,enum nl80211_iftype type,u32 * flags,struct vif_params * params)25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
26 const char *name,
27 unsigned char name_assign_type,
28 enum nl80211_iftype type,
29 u32 *flags,
30 struct vif_params *params)
31 {
32 struct ieee80211_local *local = wiphy_priv(wiphy);
33 struct wireless_dev *wdev;
34 struct ieee80211_sub_if_data *sdata;
35 int err;
36
37 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
38 if (err)
39 return ERR_PTR(err);
40
41 if (type == NL80211_IFTYPE_MONITOR && flags) {
42 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
43 sdata->u.mntr.flags = *flags;
44 }
45
46 return wdev;
47 }
48
ieee80211_del_iface(struct wiphy * wiphy,struct wireless_dev * wdev)49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
50 {
51 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
52
53 return 0;
54 }
55
ieee80211_change_iface(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)56 static int ieee80211_change_iface(struct wiphy *wiphy,
57 struct net_device *dev,
58 enum nl80211_iftype type, u32 *flags,
59 struct vif_params *params)
60 {
61 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
62 int ret;
63
64 ret = ieee80211_if_change_type(sdata, type);
65 if (ret)
66 return ret;
67
68 if (type == NL80211_IFTYPE_AP_VLAN &&
69 params && params->use_4addr == 0) {
70 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
71 ieee80211_check_fast_rx_iface(sdata);
72 } else if (type == NL80211_IFTYPE_STATION &&
73 params && params->use_4addr >= 0) {
74 sdata->u.mgd.use_4addr = params->use_4addr;
75 }
76
77 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
78 struct ieee80211_local *local = sdata->local;
79 struct ieee80211_sub_if_data *monitor_sdata;
80 u32 mu_mntr_cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
81
82 monitor_sdata = rtnl_dereference(local->monitor_sdata);
83 if (monitor_sdata &&
84 wiphy_ext_feature_isset(wiphy, mu_mntr_cap_flag)) {
85 memcpy(monitor_sdata->vif.bss_conf.mu_group.membership,
86 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
87 memcpy(monitor_sdata->vif.bss_conf.mu_group.position,
88 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
89 WLAN_USER_POSITION_LEN);
90 monitor_sdata->vif.mu_mimo_owner = true;
91 ieee80211_bss_info_change_notify(monitor_sdata,
92 BSS_CHANGED_MU_GROUPS);
93
94 ether_addr_copy(monitor_sdata->u.mntr.mu_follow_addr,
95 params->macaddr);
96 }
97
98 if (!flags)
99 return 0;
100
101 if (ieee80211_sdata_running(sdata)) {
102 u32 mask = MONITOR_FLAG_COOK_FRAMES |
103 MONITOR_FLAG_ACTIVE;
104
105 /*
106 * Prohibit MONITOR_FLAG_COOK_FRAMES and
107 * MONITOR_FLAG_ACTIVE to be changed while the
108 * interface is up.
109 * Else we would need to add a lot of cruft
110 * to update everything:
111 * cooked_mntrs, monitor and all fif_* counters
112 * reconfigure hardware
113 */
114 if ((*flags & mask) != (sdata->u.mntr.flags & mask))
115 return -EBUSY;
116
117 ieee80211_adjust_monitor_flags(sdata, -1);
118 sdata->u.mntr.flags = *flags;
119 ieee80211_adjust_monitor_flags(sdata, 1);
120
121 ieee80211_configure_filter(local);
122 } else {
123 /*
124 * Because the interface is down, ieee80211_do_stop
125 * and ieee80211_do_open take care of "everything"
126 * mentioned in the comment above.
127 */
128 sdata->u.mntr.flags = *flags;
129 }
130 }
131
132 return 0;
133 }
134
ieee80211_start_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)135 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
136 struct wireless_dev *wdev)
137 {
138 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
139 int ret;
140
141 mutex_lock(&sdata->local->chanctx_mtx);
142 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
143 mutex_unlock(&sdata->local->chanctx_mtx);
144 if (ret < 0)
145 return ret;
146
147 return ieee80211_do_open(wdev, true);
148 }
149
ieee80211_stop_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)150 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
151 struct wireless_dev *wdev)
152 {
153 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
154 }
155
ieee80211_start_nan(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf)156 static int ieee80211_start_nan(struct wiphy *wiphy,
157 struct wireless_dev *wdev,
158 struct cfg80211_nan_conf *conf)
159 {
160 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
161 int ret;
162
163 mutex_lock(&sdata->local->chanctx_mtx);
164 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
165 mutex_unlock(&sdata->local->chanctx_mtx);
166 if (ret < 0)
167 return ret;
168
169 ret = ieee80211_do_open(wdev, true);
170 if (ret)
171 return ret;
172
173 ret = drv_start_nan(sdata->local, sdata, conf);
174 if (ret)
175 ieee80211_sdata_stop(sdata);
176
177 sdata->u.nan.conf = *conf;
178
179 return ret;
180 }
181
ieee80211_stop_nan(struct wiphy * wiphy,struct wireless_dev * wdev)182 static void ieee80211_stop_nan(struct wiphy *wiphy,
183 struct wireless_dev *wdev)
184 {
185 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
186
187 drv_stop_nan(sdata->local, sdata);
188 ieee80211_sdata_stop(sdata);
189 }
190
ieee80211_nan_change_conf(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf,u32 changes)191 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
192 struct wireless_dev *wdev,
193 struct cfg80211_nan_conf *conf,
194 u32 changes)
195 {
196 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
197 struct cfg80211_nan_conf new_conf;
198 int ret = 0;
199
200 if (sdata->vif.type != NL80211_IFTYPE_NAN)
201 return -EOPNOTSUPP;
202
203 if (!ieee80211_sdata_running(sdata))
204 return -ENETDOWN;
205
206 new_conf = sdata->u.nan.conf;
207
208 if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
209 new_conf.master_pref = conf->master_pref;
210
211 if (changes & CFG80211_NAN_CONF_CHANGED_DUAL)
212 new_conf.dual = conf->dual;
213
214 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
215 if (!ret)
216 sdata->u.nan.conf = new_conf;
217
218 return ret;
219 }
220
ieee80211_add_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_func * nan_func)221 static int ieee80211_add_nan_func(struct wiphy *wiphy,
222 struct wireless_dev *wdev,
223 struct cfg80211_nan_func *nan_func)
224 {
225 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
226 int ret;
227
228 if (sdata->vif.type != NL80211_IFTYPE_NAN)
229 return -EOPNOTSUPP;
230
231 if (!ieee80211_sdata_running(sdata))
232 return -ENETDOWN;
233
234 spin_lock_bh(&sdata->u.nan.func_lock);
235
236 ret = idr_alloc(&sdata->u.nan.function_inst_ids,
237 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
238 GFP_ATOMIC);
239 spin_unlock_bh(&sdata->u.nan.func_lock);
240
241 if (ret < 0)
242 return ret;
243
244 nan_func->instance_id = ret;
245
246 WARN_ON(nan_func->instance_id == 0);
247
248 ret = drv_add_nan_func(sdata->local, sdata, nan_func);
249 if (ret) {
250 spin_lock_bh(&sdata->u.nan.func_lock);
251 idr_remove(&sdata->u.nan.function_inst_ids,
252 nan_func->instance_id);
253 spin_unlock_bh(&sdata->u.nan.func_lock);
254 }
255
256 return ret;
257 }
258
259 static struct cfg80211_nan_func *
ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data * sdata,u64 cookie)260 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
261 u64 cookie)
262 {
263 struct cfg80211_nan_func *func;
264 int id;
265
266 lockdep_assert_held(&sdata->u.nan.func_lock);
267
268 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
269 if (func->cookie == cookie)
270 return func;
271 }
272
273 return NULL;
274 }
275
ieee80211_del_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,u64 cookie)276 static void ieee80211_del_nan_func(struct wiphy *wiphy,
277 struct wireless_dev *wdev, u64 cookie)
278 {
279 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
280 struct cfg80211_nan_func *func;
281 u8 instance_id = 0;
282
283 if (sdata->vif.type != NL80211_IFTYPE_NAN ||
284 !ieee80211_sdata_running(sdata))
285 return;
286
287 spin_lock_bh(&sdata->u.nan.func_lock);
288
289 func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
290 if (func)
291 instance_id = func->instance_id;
292
293 spin_unlock_bh(&sdata->u.nan.func_lock);
294
295 if (instance_id)
296 drv_del_nan_func(sdata->local, sdata, instance_id);
297 }
298
ieee80211_set_noack_map(struct wiphy * wiphy,struct net_device * dev,u16 noack_map)299 static int ieee80211_set_noack_map(struct wiphy *wiphy,
300 struct net_device *dev,
301 u16 noack_map)
302 {
303 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
304
305 sdata->noack_map = noack_map;
306
307 ieee80211_check_fast_xmit_iface(sdata);
308
309 return 0;
310 }
311
ieee80211_add_key(struct wiphy * wiphy,struct net_device * dev,u8 key_idx,bool pairwise,const u8 * mac_addr,struct key_params * params)312 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
313 u8 key_idx, bool pairwise, const u8 *mac_addr,
314 struct key_params *params)
315 {
316 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
317 struct ieee80211_local *local = sdata->local;
318 struct sta_info *sta = NULL;
319 const struct ieee80211_cipher_scheme *cs = NULL;
320 struct ieee80211_key *key;
321 int err;
322
323 if (!ieee80211_sdata_running(sdata))
324 return -ENETDOWN;
325
326 /* reject WEP and TKIP keys if WEP failed to initialize */
327 switch (params->cipher) {
328 case WLAN_CIPHER_SUITE_WEP40:
329 case WLAN_CIPHER_SUITE_TKIP:
330 case WLAN_CIPHER_SUITE_WEP104:
331 if (IS_ERR(local->wep_tx_tfm))
332 return -EINVAL;
333 break;
334 case WLAN_CIPHER_SUITE_CCMP:
335 case WLAN_CIPHER_SUITE_CCMP_256:
336 case WLAN_CIPHER_SUITE_AES_CMAC:
337 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
338 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
339 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
340 case WLAN_CIPHER_SUITE_GCMP:
341 case WLAN_CIPHER_SUITE_GCMP_256:
342 break;
343 default:
344 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
345 break;
346 }
347
348 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
349 params->key, params->seq_len, params->seq,
350 cs);
351 if (IS_ERR(key))
352 return PTR_ERR(key);
353
354 if (pairwise)
355 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
356
357 mutex_lock(&local->sta_mtx);
358
359 if (mac_addr) {
360 if (ieee80211_vif_is_mesh(&sdata->vif))
361 sta = sta_info_get(sdata, mac_addr);
362 else
363 sta = sta_info_get_bss(sdata, mac_addr);
364 /*
365 * The ASSOC test makes sure the driver is ready to
366 * receive the key. When wpa_supplicant has roamed
367 * using FT, it attempts to set the key before
368 * association has completed, this rejects that attempt
369 * so it will set the key again after association.
370 *
371 * TODO: accept the key if we have a station entry and
372 * add it to the device after the station.
373 */
374 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
375 ieee80211_key_free_unused(key);
376 err = -ENOENT;
377 goto out_unlock;
378 }
379 }
380
381 switch (sdata->vif.type) {
382 case NL80211_IFTYPE_STATION:
383 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
384 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
385 break;
386 case NL80211_IFTYPE_AP:
387 case NL80211_IFTYPE_AP_VLAN:
388 /* Keys without a station are used for TX only */
389 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
390 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
391 break;
392 case NL80211_IFTYPE_ADHOC:
393 /* no MFP (yet) */
394 break;
395 case NL80211_IFTYPE_MESH_POINT:
396 #ifdef CONFIG_MAC80211_MESH
397 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
398 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
399 break;
400 #endif
401 case NL80211_IFTYPE_WDS:
402 case NL80211_IFTYPE_MONITOR:
403 case NL80211_IFTYPE_P2P_DEVICE:
404 case NL80211_IFTYPE_NAN:
405 case NL80211_IFTYPE_UNSPECIFIED:
406 case NUM_NL80211_IFTYPES:
407 case NL80211_IFTYPE_P2P_CLIENT:
408 case NL80211_IFTYPE_P2P_GO:
409 case NL80211_IFTYPE_OCB:
410 /* shouldn't happen */
411 WARN_ON_ONCE(1);
412 break;
413 }
414
415 if (sta)
416 sta->cipher_scheme = cs;
417
418 err = ieee80211_key_link(key, sdata, sta);
419
420 out_unlock:
421 mutex_unlock(&local->sta_mtx);
422
423 return err;
424 }
425
ieee80211_del_key(struct wiphy * wiphy,struct net_device * dev,u8 key_idx,bool pairwise,const u8 * mac_addr)426 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
427 u8 key_idx, bool pairwise, const u8 *mac_addr)
428 {
429 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
430 struct ieee80211_local *local = sdata->local;
431 struct sta_info *sta;
432 struct ieee80211_key *key = NULL;
433 int ret;
434
435 mutex_lock(&local->sta_mtx);
436 mutex_lock(&local->key_mtx);
437
438 if (mac_addr) {
439 ret = -ENOENT;
440
441 sta = sta_info_get_bss(sdata, mac_addr);
442 if (!sta)
443 goto out_unlock;
444
445 if (pairwise)
446 key = key_mtx_dereference(local, sta->ptk[key_idx]);
447 else
448 key = key_mtx_dereference(local, sta->gtk[key_idx]);
449 } else
450 key = key_mtx_dereference(local, sdata->keys[key_idx]);
451
452 if (!key) {
453 ret = -ENOENT;
454 goto out_unlock;
455 }
456
457 ieee80211_key_free(key, true);
458
459 ret = 0;
460 out_unlock:
461 mutex_unlock(&local->key_mtx);
462 mutex_unlock(&local->sta_mtx);
463
464 return ret;
465 }
466
ieee80211_get_key(struct wiphy * wiphy,struct net_device * dev,u8 key_idx,bool pairwise,const u8 * mac_addr,void * cookie,void (* callback)(void * cookie,struct key_params * params))467 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
468 u8 key_idx, bool pairwise, const u8 *mac_addr,
469 void *cookie,
470 void (*callback)(void *cookie,
471 struct key_params *params))
472 {
473 struct ieee80211_sub_if_data *sdata;
474 struct sta_info *sta = NULL;
475 u8 seq[6] = {0};
476 struct key_params params;
477 struct ieee80211_key *key = NULL;
478 u64 pn64;
479 u32 iv32;
480 u16 iv16;
481 int err = -ENOENT;
482 struct ieee80211_key_seq kseq = {};
483
484 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
485
486 rcu_read_lock();
487
488 if (mac_addr) {
489 sta = sta_info_get_bss(sdata, mac_addr);
490 if (!sta)
491 goto out;
492
493 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
494 key = rcu_dereference(sta->ptk[key_idx]);
495 else if (!pairwise &&
496 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
497 key = rcu_dereference(sta->gtk[key_idx]);
498 } else
499 key = rcu_dereference(sdata->keys[key_idx]);
500
501 if (!key)
502 goto out;
503
504 memset(¶ms, 0, sizeof(params));
505
506 params.cipher = key->conf.cipher;
507
508 switch (key->conf.cipher) {
509 case WLAN_CIPHER_SUITE_TKIP:
510 pn64 = atomic64_read(&key->conf.tx_pn);
511 iv32 = TKIP_PN_TO_IV32(pn64);
512 iv16 = TKIP_PN_TO_IV16(pn64);
513
514 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
515 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
516 drv_get_key_seq(sdata->local, key, &kseq);
517 iv32 = kseq.tkip.iv32;
518 iv16 = kseq.tkip.iv16;
519 }
520
521 seq[0] = iv16 & 0xff;
522 seq[1] = (iv16 >> 8) & 0xff;
523 seq[2] = iv32 & 0xff;
524 seq[3] = (iv32 >> 8) & 0xff;
525 seq[4] = (iv32 >> 16) & 0xff;
526 seq[5] = (iv32 >> 24) & 0xff;
527 params.seq = seq;
528 params.seq_len = 6;
529 break;
530 case WLAN_CIPHER_SUITE_CCMP:
531 case WLAN_CIPHER_SUITE_CCMP_256:
532 case WLAN_CIPHER_SUITE_AES_CMAC:
533 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
534 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
535 offsetof(typeof(kseq), aes_cmac));
536 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
537 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
538 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
539 offsetof(typeof(kseq), aes_gmac));
540 case WLAN_CIPHER_SUITE_GCMP:
541 case WLAN_CIPHER_SUITE_GCMP_256:
542 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
543 offsetof(typeof(kseq), gcmp));
544
545 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
546 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
547 drv_get_key_seq(sdata->local, key, &kseq);
548 memcpy(seq, kseq.ccmp.pn, 6);
549 } else {
550 pn64 = atomic64_read(&key->conf.tx_pn);
551 seq[0] = pn64;
552 seq[1] = pn64 >> 8;
553 seq[2] = pn64 >> 16;
554 seq[3] = pn64 >> 24;
555 seq[4] = pn64 >> 32;
556 seq[5] = pn64 >> 40;
557 }
558 params.seq = seq;
559 params.seq_len = 6;
560 break;
561 default:
562 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
563 break;
564 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
565 break;
566 drv_get_key_seq(sdata->local, key, &kseq);
567 params.seq = kseq.hw.seq;
568 params.seq_len = kseq.hw.seq_len;
569 break;
570 }
571
572 params.key = key->conf.key;
573 params.key_len = key->conf.keylen;
574
575 callback(cookie, ¶ms);
576 err = 0;
577
578 out:
579 rcu_read_unlock();
580 return err;
581 }
582
ieee80211_config_default_key(struct wiphy * wiphy,struct net_device * dev,u8 key_idx,bool uni,bool multi)583 static int ieee80211_config_default_key(struct wiphy *wiphy,
584 struct net_device *dev,
585 u8 key_idx, bool uni,
586 bool multi)
587 {
588 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
589
590 ieee80211_set_default_key(sdata, key_idx, uni, multi);
591
592 return 0;
593 }
594
ieee80211_config_default_mgmt_key(struct wiphy * wiphy,struct net_device * dev,u8 key_idx)595 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
596 struct net_device *dev,
597 u8 key_idx)
598 {
599 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
600
601 ieee80211_set_default_mgmt_key(sdata, key_idx);
602
603 return 0;
604 }
605
sta_set_rate_info_tx(struct sta_info * sta,const struct ieee80211_tx_rate * rate,struct rate_info * rinfo)606 void sta_set_rate_info_tx(struct sta_info *sta,
607 const struct ieee80211_tx_rate *rate,
608 struct rate_info *rinfo)
609 {
610 rinfo->flags = 0;
611 if (rate->flags & IEEE80211_TX_RC_MCS) {
612 rinfo->flags |= RATE_INFO_FLAGS_MCS;
613 rinfo->mcs = rate->idx;
614 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
615 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
616 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
617 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
618 } else {
619 struct ieee80211_supported_band *sband;
620 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
621 u16 brate;
622
623 sband = ieee80211_get_sband(sta->sdata);
624 if (sband) {
625 brate = sband->bitrates[rate->idx].bitrate;
626 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
627 }
628 }
629 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
630 rinfo->bw = RATE_INFO_BW_40;
631 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
632 rinfo->bw = RATE_INFO_BW_80;
633 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
634 rinfo->bw = RATE_INFO_BW_160;
635 else
636 rinfo->bw = RATE_INFO_BW_20;
637 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
638 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
639 }
640
ieee80211_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)641 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
642 int idx, u8 *mac, struct station_info *sinfo)
643 {
644 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
645 struct ieee80211_local *local = sdata->local;
646 struct sta_info *sta;
647 int ret = -ENOENT;
648
649 mutex_lock(&local->sta_mtx);
650
651 sta = sta_info_get_by_idx(sdata, idx);
652 if (sta) {
653 ret = 0;
654 memcpy(mac, sta->sta.addr, ETH_ALEN);
655 sta_set_sinfo(sta, sinfo);
656 }
657
658 mutex_unlock(&local->sta_mtx);
659
660 return ret;
661 }
662
ieee80211_dump_survey(struct wiphy * wiphy,struct net_device * dev,int idx,struct survey_info * survey)663 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
664 int idx, struct survey_info *survey)
665 {
666 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
667
668 return drv_get_survey(local, idx, survey);
669 }
670
ieee80211_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)671 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
672 const u8 *mac, struct station_info *sinfo)
673 {
674 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
675 struct ieee80211_local *local = sdata->local;
676 struct sta_info *sta;
677 int ret = -ENOENT;
678
679 mutex_lock(&local->sta_mtx);
680
681 sta = sta_info_get_bss(sdata, mac);
682 if (sta) {
683 ret = 0;
684 sta_set_sinfo(sta, sinfo);
685 }
686
687 mutex_unlock(&local->sta_mtx);
688
689 return ret;
690 }
691
ieee80211_set_monitor_channel(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)692 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
693 struct cfg80211_chan_def *chandef)
694 {
695 struct ieee80211_local *local = wiphy_priv(wiphy);
696 struct ieee80211_sub_if_data *sdata;
697 int ret = 0;
698
699 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
700 return 0;
701
702 mutex_lock(&local->mtx);
703 mutex_lock(&local->iflist_mtx);
704 if (local->use_chanctx) {
705 sdata = rcu_dereference_protected(
706 local->monitor_sdata,
707 lockdep_is_held(&local->iflist_mtx));
708 if (sdata) {
709 ieee80211_vif_release_channel(sdata);
710 ret = ieee80211_vif_use_channel(sdata, chandef,
711 IEEE80211_CHANCTX_EXCLUSIVE);
712 }
713 } else if (local->open_count == local->monitors) {
714 local->_oper_chandef = *chandef;
715 ieee80211_hw_config(local, 0);
716 }
717
718 if (ret == 0)
719 local->monitor_chandef = *chandef;
720 mutex_unlock(&local->iflist_mtx);
721 mutex_unlock(&local->mtx);
722
723 return ret;
724 }
725
ieee80211_set_probe_resp(struct ieee80211_sub_if_data * sdata,const u8 * resp,size_t resp_len,const struct ieee80211_csa_settings * csa)726 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
727 const u8 *resp, size_t resp_len,
728 const struct ieee80211_csa_settings *csa)
729 {
730 struct probe_resp *new, *old;
731
732 if (!resp || !resp_len)
733 return 1;
734
735 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
736
737 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
738 if (!new)
739 return -ENOMEM;
740
741 new->len = resp_len;
742 memcpy(new->data, resp, resp_len);
743
744 if (csa)
745 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
746 csa->n_counter_offsets_presp *
747 sizeof(new->csa_counter_offsets[0]));
748
749 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
750 if (old)
751 kfree_rcu(old, rcu_head);
752
753 return 0;
754 }
755
ieee80211_assign_beacon(struct ieee80211_sub_if_data * sdata,struct cfg80211_beacon_data * params,const struct ieee80211_csa_settings * csa)756 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
757 struct cfg80211_beacon_data *params,
758 const struct ieee80211_csa_settings *csa)
759 {
760 struct beacon_data *new, *old;
761 int new_head_len, new_tail_len;
762 int size, err;
763 u32 changed = BSS_CHANGED_BEACON;
764
765 old = sdata_dereference(sdata->u.ap.beacon, sdata);
766
767
768 /* Need to have a beacon head if we don't have one yet */
769 if (!params->head && !old)
770 return -EINVAL;
771
772 /* new or old head? */
773 if (params->head)
774 new_head_len = params->head_len;
775 else
776 new_head_len = old->head_len;
777
778 /* new or old tail? */
779 if (params->tail || !old)
780 /* params->tail_len will be zero for !params->tail */
781 new_tail_len = params->tail_len;
782 else
783 new_tail_len = old->tail_len;
784
785 size = sizeof(*new) + new_head_len + new_tail_len;
786
787 new = kzalloc(size, GFP_KERNEL);
788 if (!new)
789 return -ENOMEM;
790
791 /* start filling the new info now */
792
793 /*
794 * pointers go into the block we allocated,
795 * memory is | beacon_data | head | tail |
796 */
797 new->head = ((u8 *) new) + sizeof(*new);
798 new->tail = new->head + new_head_len;
799 new->head_len = new_head_len;
800 new->tail_len = new_tail_len;
801
802 if (csa) {
803 new->csa_current_counter = csa->count;
804 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
805 csa->n_counter_offsets_beacon *
806 sizeof(new->csa_counter_offsets[0]));
807 }
808
809 /* copy in head */
810 if (params->head)
811 memcpy(new->head, params->head, new_head_len);
812 else
813 memcpy(new->head, old->head, new_head_len);
814
815 /* copy in optional tail */
816 if (params->tail)
817 memcpy(new->tail, params->tail, new_tail_len);
818 else
819 if (old)
820 memcpy(new->tail, old->tail, new_tail_len);
821
822 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
823 params->probe_resp_len, csa);
824 if (err < 0)
825 return err;
826 if (err == 0)
827 changed |= BSS_CHANGED_AP_PROBE_RESP;
828
829 rcu_assign_pointer(sdata->u.ap.beacon, new);
830
831 if (old)
832 kfree_rcu(old, rcu_head);
833
834 return changed;
835 }
836
ieee80211_start_ap(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ap_settings * params)837 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
838 struct cfg80211_ap_settings *params)
839 {
840 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
841 struct ieee80211_local *local = sdata->local;
842 struct beacon_data *old;
843 struct ieee80211_sub_if_data *vlan;
844 u32 changed = BSS_CHANGED_BEACON_INT |
845 BSS_CHANGED_BEACON_ENABLED |
846 BSS_CHANGED_BEACON |
847 BSS_CHANGED_SSID |
848 BSS_CHANGED_P2P_PS |
849 BSS_CHANGED_TXPOWER;
850 int err;
851
852 old = sdata_dereference(sdata->u.ap.beacon, sdata);
853 if (old)
854 return -EALREADY;
855
856 switch (params->smps_mode) {
857 case NL80211_SMPS_OFF:
858 sdata->smps_mode = IEEE80211_SMPS_OFF;
859 break;
860 case NL80211_SMPS_STATIC:
861 sdata->smps_mode = IEEE80211_SMPS_STATIC;
862 break;
863 case NL80211_SMPS_DYNAMIC:
864 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
865 break;
866 default:
867 return -EINVAL;
868 }
869 sdata->u.ap.req_smps = sdata->smps_mode;
870
871 sdata->needed_rx_chains = sdata->local->rx_chains;
872
873 mutex_lock(&local->mtx);
874 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef,
875 IEEE80211_CHANCTX_SHARED);
876 if (!err)
877 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
878 mutex_unlock(&local->mtx);
879 if (err)
880 return err;
881
882 /*
883 * Apply control port protocol, this allows us to
884 * not encrypt dynamic WEP control frames.
885 */
886 sdata->control_port_protocol = params->crypto.control_port_ethertype;
887 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
888 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
889 ¶ms->crypto,
890 sdata->vif.type);
891
892 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
893 vlan->control_port_protocol =
894 params->crypto.control_port_ethertype;
895 vlan->control_port_no_encrypt =
896 params->crypto.control_port_no_encrypt;
897 vlan->encrypt_headroom =
898 ieee80211_cs_headroom(sdata->local,
899 ¶ms->crypto,
900 vlan->vif.type);
901 }
902
903 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
904 sdata->vif.bss_conf.dtim_period = params->dtim_period;
905 sdata->vif.bss_conf.enable_beacon = true;
906 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
907
908 sdata->vif.bss_conf.ssid_len = params->ssid_len;
909 if (params->ssid_len)
910 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
911 params->ssid_len);
912 sdata->vif.bss_conf.hidden_ssid =
913 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
914
915 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
916 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
917 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
918 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
919 if (params->p2p_opp_ps)
920 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
921 IEEE80211_P2P_OPPPS_ENABLE_BIT;
922
923 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL);
924 if (err < 0) {
925 ieee80211_vif_release_channel(sdata);
926 return err;
927 }
928 changed |= err;
929
930 err = drv_start_ap(sdata->local, sdata);
931 if (err) {
932 old = sdata_dereference(sdata->u.ap.beacon, sdata);
933
934 if (old)
935 kfree_rcu(old, rcu_head);
936 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
937 ieee80211_vif_release_channel(sdata);
938 return err;
939 }
940
941 ieee80211_recalc_dtim(local, sdata);
942 ieee80211_bss_info_change_notify(sdata, changed);
943
944 netif_carrier_on(dev);
945 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
946 netif_carrier_on(vlan->dev);
947
948 return 0;
949 }
950
ieee80211_change_beacon(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_beacon_data * params)951 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
952 struct cfg80211_beacon_data *params)
953 {
954 struct ieee80211_sub_if_data *sdata;
955 struct beacon_data *old;
956 int err;
957
958 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
959 sdata_assert_lock(sdata);
960
961 /* don't allow changing the beacon while CSA is in place - offset
962 * of channel switch counter may change
963 */
964 if (sdata->vif.csa_active)
965 return -EBUSY;
966
967 old = sdata_dereference(sdata->u.ap.beacon, sdata);
968 if (!old)
969 return -ENOENT;
970
971 err = ieee80211_assign_beacon(sdata, params, NULL);
972 if (err < 0)
973 return err;
974 ieee80211_bss_info_change_notify(sdata, err);
975 return 0;
976 }
977
ieee80211_stop_ap(struct wiphy * wiphy,struct net_device * dev)978 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
979 {
980 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
981 struct ieee80211_sub_if_data *vlan;
982 struct ieee80211_local *local = sdata->local;
983 struct beacon_data *old_beacon;
984 struct probe_resp *old_probe_resp;
985 struct cfg80211_chan_def chandef;
986
987 sdata_assert_lock(sdata);
988
989 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
990 if (!old_beacon)
991 return -ENOENT;
992 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
993
994 /* abort any running channel switch */
995 mutex_lock(&local->mtx);
996 sdata->vif.csa_active = false;
997 if (sdata->csa_block_tx) {
998 ieee80211_wake_vif_queues(local, sdata,
999 IEEE80211_QUEUE_STOP_REASON_CSA);
1000 sdata->csa_block_tx = false;
1001 }
1002
1003 mutex_unlock(&local->mtx);
1004
1005 kfree(sdata->u.ap.next_beacon);
1006 sdata->u.ap.next_beacon = NULL;
1007
1008 /* turn off carrier for this interface and dependent VLANs */
1009 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1010 netif_carrier_off(vlan->dev);
1011 netif_carrier_off(dev);
1012
1013 /* remove beacon and probe response */
1014 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1015 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1016 kfree_rcu(old_beacon, rcu_head);
1017 if (old_probe_resp)
1018 kfree_rcu(old_probe_resp, rcu_head);
1019 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1020
1021 __sta_info_flush(sdata, true);
1022 ieee80211_free_keys(sdata, true);
1023
1024 sdata->vif.bss_conf.enable_beacon = false;
1025 sdata->vif.bss_conf.ssid_len = 0;
1026 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1027 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1028
1029 if (sdata->wdev.cac_started) {
1030 chandef = sdata->vif.bss_conf.chandef;
1031 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1032 cfg80211_cac_event(sdata->dev, &chandef,
1033 NL80211_RADAR_CAC_ABORTED,
1034 GFP_KERNEL);
1035 }
1036
1037 drv_stop_ap(sdata->local, sdata);
1038
1039 /* free all potentially still buffered bcast frames */
1040 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1041 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1042
1043 mutex_lock(&local->mtx);
1044 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1045 ieee80211_vif_release_channel(sdata);
1046 mutex_unlock(&local->mtx);
1047
1048 return 0;
1049 }
1050
1051 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1052 struct iapp_layer2_update {
1053 u8 da[ETH_ALEN]; /* broadcast */
1054 u8 sa[ETH_ALEN]; /* STA addr */
1055 __be16 len; /* 6 */
1056 u8 dsap; /* 0 */
1057 u8 ssap; /* 0 */
1058 u8 control;
1059 u8 xid_info[3];
1060 } __packed;
1061
ieee80211_send_layer2_update(struct sta_info * sta)1062 static void ieee80211_send_layer2_update(struct sta_info *sta)
1063 {
1064 struct iapp_layer2_update *msg;
1065 struct sk_buff *skb;
1066
1067 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1068 * bridge devices */
1069
1070 skb = dev_alloc_skb(sizeof(*msg));
1071 if (!skb)
1072 return;
1073 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1074
1075 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1076 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1077
1078 eth_broadcast_addr(msg->da);
1079 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1080 msg->len = htons(6);
1081 msg->dsap = 0;
1082 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1083 msg->control = 0xaf; /* XID response lsb.1111F101.
1084 * F=0 (no poll command; unsolicited frame) */
1085 msg->xid_info[0] = 0x81; /* XID format identifier */
1086 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1087 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1088
1089 skb->dev = sta->sdata->dev;
1090 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1091 memset(skb->cb, 0, sizeof(skb->cb));
1092 netif_rx_ni(skb);
1093 }
1094
sta_apply_auth_flags(struct ieee80211_local * local,struct sta_info * sta,u32 mask,u32 set)1095 static int sta_apply_auth_flags(struct ieee80211_local *local,
1096 struct sta_info *sta,
1097 u32 mask, u32 set)
1098 {
1099 int ret;
1100
1101 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1102 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1103 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1104 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1105 if (ret)
1106 return ret;
1107 }
1108
1109 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1110 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1111 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1112 /*
1113 * When peer becomes associated, init rate control as
1114 * well. Some drivers require rate control initialized
1115 * before drv_sta_state() is called.
1116 */
1117 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1118 rate_control_rate_init(sta);
1119
1120 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1121 if (ret)
1122 return ret;
1123 }
1124
1125 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1126 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1127 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1128 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1129 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1130 else
1131 ret = 0;
1132 if (ret)
1133 return ret;
1134 }
1135
1136 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1137 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1138 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1139 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1140 if (ret)
1141 return ret;
1142 }
1143
1144 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1145 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1146 test_sta_flag(sta, WLAN_STA_AUTH)) {
1147 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1148 if (ret)
1149 return ret;
1150 }
1151
1152 return 0;
1153 }
1154
sta_apply_mesh_params(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1155 static void sta_apply_mesh_params(struct ieee80211_local *local,
1156 struct sta_info *sta,
1157 struct station_parameters *params)
1158 {
1159 #ifdef CONFIG_MAC80211_MESH
1160 struct ieee80211_sub_if_data *sdata = sta->sdata;
1161 u32 changed = 0;
1162
1163 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1164 switch (params->plink_state) {
1165 case NL80211_PLINK_ESTAB:
1166 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1167 changed = mesh_plink_inc_estab_count(sdata);
1168 sta->mesh->plink_state = params->plink_state;
1169 sta->mesh->aid = params->peer_aid;
1170
1171 ieee80211_mps_sta_status_update(sta);
1172 changed |= ieee80211_mps_set_sta_local_pm(sta,
1173 sdata->u.mesh.mshcfg.power_mode);
1174 break;
1175 case NL80211_PLINK_LISTEN:
1176 case NL80211_PLINK_BLOCKED:
1177 case NL80211_PLINK_OPN_SNT:
1178 case NL80211_PLINK_OPN_RCVD:
1179 case NL80211_PLINK_CNF_RCVD:
1180 case NL80211_PLINK_HOLDING:
1181 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1182 changed = mesh_plink_dec_estab_count(sdata);
1183 sta->mesh->plink_state = params->plink_state;
1184
1185 ieee80211_mps_sta_status_update(sta);
1186 changed |= ieee80211_mps_set_sta_local_pm(sta,
1187 NL80211_MESH_POWER_UNKNOWN);
1188 break;
1189 default:
1190 /* nothing */
1191 break;
1192 }
1193 }
1194
1195 switch (params->plink_action) {
1196 case NL80211_PLINK_ACTION_NO_ACTION:
1197 /* nothing */
1198 break;
1199 case NL80211_PLINK_ACTION_OPEN:
1200 changed |= mesh_plink_open(sta);
1201 break;
1202 case NL80211_PLINK_ACTION_BLOCK:
1203 changed |= mesh_plink_block(sta);
1204 break;
1205 }
1206
1207 if (params->local_pm)
1208 changed |= ieee80211_mps_set_sta_local_pm(sta,
1209 params->local_pm);
1210
1211 ieee80211_mbss_info_change_notify(sdata, changed);
1212 #endif
1213 }
1214
sta_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1215 static int sta_apply_parameters(struct ieee80211_local *local,
1216 struct sta_info *sta,
1217 struct station_parameters *params)
1218 {
1219 int ret = 0;
1220 struct ieee80211_supported_band *sband;
1221 struct ieee80211_sub_if_data *sdata = sta->sdata;
1222 u32 mask, set;
1223
1224 sband = ieee80211_get_sband(sdata);
1225 if (!sband)
1226 return -EINVAL;
1227
1228 mask = params->sta_flags_mask;
1229 set = params->sta_flags_set;
1230
1231 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1232 /*
1233 * In mesh mode, ASSOCIATED isn't part of the nl80211
1234 * API but must follow AUTHENTICATED for driver state.
1235 */
1236 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1237 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1238 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1239 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1240 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1241 /*
1242 * TDLS -- everything follows authorized, but
1243 * only becoming authorized is possible, not
1244 * going back
1245 */
1246 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1247 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1248 BIT(NL80211_STA_FLAG_ASSOCIATED);
1249 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1250 BIT(NL80211_STA_FLAG_ASSOCIATED);
1251 }
1252 }
1253
1254 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1255 local->hw.queues >= IEEE80211_NUM_ACS)
1256 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1257
1258 /* auth flags will be set later for TDLS,
1259 * and for unassociated stations that move to assocaited */
1260 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1261 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1262 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1263 ret = sta_apply_auth_flags(local, sta, mask, set);
1264 if (ret)
1265 return ret;
1266 }
1267
1268 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1269 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1270 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1271 else
1272 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1273 }
1274
1275 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1276 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1277 if (set & BIT(NL80211_STA_FLAG_MFP))
1278 set_sta_flag(sta, WLAN_STA_MFP);
1279 else
1280 clear_sta_flag(sta, WLAN_STA_MFP);
1281 }
1282
1283 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1284 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1285 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1286 else
1287 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1288 }
1289
1290 /* mark TDLS channel switch support, if the AP allows it */
1291 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1292 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1293 params->ext_capab_len >= 4 &&
1294 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1295 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1296
1297 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1298 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1299 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1300 params->ext_capab_len >= 8 &&
1301 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1302 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1303
1304 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1305 sta->sta.uapsd_queues = params->uapsd_queues;
1306 sta->sta.max_sp = params->max_sp;
1307 }
1308
1309 /* The sender might not have sent the last bit, consider it to be 0 */
1310 if (params->ext_capab_len >= 8) {
1311 u8 val = (params->ext_capab[7] &
1312 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1313
1314 /* we did get all the bits, take the MSB as well */
1315 if (params->ext_capab_len >= 9) {
1316 u8 val_msb = params->ext_capab[8] &
1317 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1318 val_msb <<= 1;
1319 val |= val_msb;
1320 }
1321
1322 switch (val) {
1323 case 1:
1324 sta->sta.max_amsdu_subframes = 32;
1325 break;
1326 case 2:
1327 sta->sta.max_amsdu_subframes = 16;
1328 break;
1329 case 3:
1330 sta->sta.max_amsdu_subframes = 8;
1331 break;
1332 default:
1333 sta->sta.max_amsdu_subframes = 0;
1334 }
1335 }
1336
1337 /*
1338 * cfg80211 validates this (1-2007) and allows setting the AID
1339 * only when creating a new station entry
1340 */
1341 if (params->aid)
1342 sta->sta.aid = params->aid;
1343
1344 /*
1345 * Some of the following updates would be racy if called on an
1346 * existing station, via ieee80211_change_station(). However,
1347 * all such changes are rejected by cfg80211 except for updates
1348 * changing the supported rates on an existing but not yet used
1349 * TDLS peer.
1350 */
1351
1352 if (params->listen_interval >= 0)
1353 sta->listen_interval = params->listen_interval;
1354
1355 if (params->supported_rates) {
1356 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1357 sband, params->supported_rates,
1358 params->supported_rates_len,
1359 &sta->sta.supp_rates[sband->band]);
1360 }
1361
1362 if (params->ht_capa)
1363 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1364 params->ht_capa, sta);
1365
1366 /* VHT can override some HT caps such as the A-MSDU max length */
1367 if (params->vht_capa)
1368 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1369 params->vht_capa, sta);
1370
1371 if (params->opmode_notif_used) {
1372 /* returned value is only needed for rc update, but the
1373 * rc isn't initialized here yet, so ignore it
1374 */
1375 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1376 sband->band);
1377 }
1378
1379 if (params->support_p2p_ps >= 0)
1380 sta->sta.support_p2p_ps = params->support_p2p_ps;
1381
1382 if (ieee80211_vif_is_mesh(&sdata->vif))
1383 sta_apply_mesh_params(local, sta, params);
1384
1385 /* set the STA state after all sta info from usermode has been set */
1386 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1387 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1388 ret = sta_apply_auth_flags(local, sta, mask, set);
1389 if (ret)
1390 return ret;
1391 }
1392
1393 return 0;
1394 }
1395
ieee80211_add_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)1396 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1397 const u8 *mac,
1398 struct station_parameters *params)
1399 {
1400 struct ieee80211_local *local = wiphy_priv(wiphy);
1401 struct sta_info *sta;
1402 struct ieee80211_sub_if_data *sdata;
1403 int err;
1404 int layer2_update;
1405
1406 if (params->vlan) {
1407 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1408
1409 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1410 sdata->vif.type != NL80211_IFTYPE_AP)
1411 return -EINVAL;
1412 } else
1413 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1414
1415 if (ether_addr_equal(mac, sdata->vif.addr))
1416 return -EINVAL;
1417
1418 if (is_multicast_ether_addr(mac))
1419 return -EINVAL;
1420
1421 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1422 if (!sta)
1423 return -ENOMEM;
1424
1425 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1426 sta->sta.tdls = true;
1427
1428 err = sta_apply_parameters(local, sta, params);
1429 if (err) {
1430 sta_info_free(local, sta);
1431 return err;
1432 }
1433
1434 /*
1435 * for TDLS and for unassociated station, rate control should be
1436 * initialized only when rates are known and station is marked
1437 * authorized/associated
1438 */
1439 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1440 test_sta_flag(sta, WLAN_STA_ASSOC))
1441 rate_control_rate_init(sta);
1442
1443 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1444 sdata->vif.type == NL80211_IFTYPE_AP;
1445
1446 err = sta_info_insert_rcu(sta);
1447 if (err) {
1448 rcu_read_unlock();
1449 return err;
1450 }
1451
1452 if (layer2_update)
1453 ieee80211_send_layer2_update(sta);
1454
1455 rcu_read_unlock();
1456
1457 return 0;
1458 }
1459
ieee80211_del_station(struct wiphy * wiphy,struct net_device * dev,struct station_del_parameters * params)1460 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1461 struct station_del_parameters *params)
1462 {
1463 struct ieee80211_sub_if_data *sdata;
1464
1465 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1466
1467 if (params->mac)
1468 return sta_info_destroy_addr_bss(sdata, params->mac);
1469
1470 sta_info_flush(sdata);
1471 return 0;
1472 }
1473
ieee80211_change_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)1474 static int ieee80211_change_station(struct wiphy *wiphy,
1475 struct net_device *dev, const u8 *mac,
1476 struct station_parameters *params)
1477 {
1478 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1479 struct ieee80211_local *local = wiphy_priv(wiphy);
1480 struct sta_info *sta;
1481 struct ieee80211_sub_if_data *vlansdata;
1482 enum cfg80211_station_type statype;
1483 int err;
1484
1485 mutex_lock(&local->sta_mtx);
1486
1487 sta = sta_info_get_bss(sdata, mac);
1488 if (!sta) {
1489 err = -ENOENT;
1490 goto out_err;
1491 }
1492
1493 switch (sdata->vif.type) {
1494 case NL80211_IFTYPE_MESH_POINT:
1495 if (sdata->u.mesh.user_mpm)
1496 statype = CFG80211_STA_MESH_PEER_USER;
1497 else
1498 statype = CFG80211_STA_MESH_PEER_KERNEL;
1499 break;
1500 case NL80211_IFTYPE_ADHOC:
1501 statype = CFG80211_STA_IBSS;
1502 break;
1503 case NL80211_IFTYPE_STATION:
1504 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1505 statype = CFG80211_STA_AP_STA;
1506 break;
1507 }
1508 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1509 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1510 else
1511 statype = CFG80211_STA_TDLS_PEER_SETUP;
1512 break;
1513 case NL80211_IFTYPE_AP:
1514 case NL80211_IFTYPE_AP_VLAN:
1515 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1516 statype = CFG80211_STA_AP_CLIENT;
1517 else
1518 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1519 break;
1520 default:
1521 err = -EOPNOTSUPP;
1522 goto out_err;
1523 }
1524
1525 err = cfg80211_check_station_change(wiphy, params, statype);
1526 if (err)
1527 goto out_err;
1528
1529 if (params->vlan && params->vlan != sta->sdata->dev) {
1530 bool prev_4addr = false;
1531 bool new_4addr = false;
1532
1533 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1534
1535 if (params->vlan->ieee80211_ptr->use_4addr) {
1536 if (vlansdata->u.vlan.sta) {
1537 err = -EBUSY;
1538 goto out_err;
1539 }
1540
1541 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1542 new_4addr = true;
1543 __ieee80211_check_fast_rx_iface(vlansdata);
1544 }
1545
1546 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1547 sta->sdata->u.vlan.sta) {
1548 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1549 prev_4addr = true;
1550 }
1551
1552 sta->sdata = vlansdata;
1553 ieee80211_check_fast_xmit(sta);
1554
1555 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1556 prev_4addr != new_4addr) {
1557 if (new_4addr)
1558 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1559 else
1560 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1561 }
1562
1563 ieee80211_send_layer2_update(sta);
1564 }
1565
1566 err = sta_apply_parameters(local, sta, params);
1567 if (err)
1568 goto out_err;
1569
1570 mutex_unlock(&local->sta_mtx);
1571
1572 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1573 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1574 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1575 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1576 sta_info_tx_streams(sta) != 1) {
1577 ht_dbg(sta->sdata,
1578 "%pM just authorized and MIMO capable - update SMPS\n",
1579 sta->sta.addr);
1580 ieee80211_send_smps_action(sta->sdata,
1581 sta->sdata->bss->req_smps,
1582 sta->sta.addr,
1583 sta->sdata->vif.bss_conf.bssid);
1584 }
1585
1586 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1587 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1588 ieee80211_recalc_ps(local);
1589 ieee80211_recalc_ps_vif(sdata);
1590 }
1591
1592 return 0;
1593 out_err:
1594 mutex_unlock(&local->sta_mtx);
1595 return err;
1596 }
1597
1598 #ifdef CONFIG_MAC80211_MESH
ieee80211_add_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)1599 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1600 const u8 *dst, const u8 *next_hop)
1601 {
1602 struct ieee80211_sub_if_data *sdata;
1603 struct mesh_path *mpath;
1604 struct sta_info *sta;
1605
1606 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1607
1608 rcu_read_lock();
1609 sta = sta_info_get(sdata, next_hop);
1610 if (!sta) {
1611 rcu_read_unlock();
1612 return -ENOENT;
1613 }
1614
1615 mpath = mesh_path_add(sdata, dst);
1616 if (IS_ERR(mpath)) {
1617 rcu_read_unlock();
1618 return PTR_ERR(mpath);
1619 }
1620
1621 mesh_path_fix_nexthop(mpath, sta);
1622
1623 rcu_read_unlock();
1624 return 0;
1625 }
1626
ieee80211_del_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst)1627 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1628 const u8 *dst)
1629 {
1630 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1631
1632 if (dst)
1633 return mesh_path_del(sdata, dst);
1634
1635 mesh_path_flush_by_iface(sdata);
1636 return 0;
1637 }
1638
ieee80211_change_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)1639 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1640 const u8 *dst, const u8 *next_hop)
1641 {
1642 struct ieee80211_sub_if_data *sdata;
1643 struct mesh_path *mpath;
1644 struct sta_info *sta;
1645
1646 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1647
1648 rcu_read_lock();
1649
1650 sta = sta_info_get(sdata, next_hop);
1651 if (!sta) {
1652 rcu_read_unlock();
1653 return -ENOENT;
1654 }
1655
1656 mpath = mesh_path_lookup(sdata, dst);
1657 if (!mpath) {
1658 rcu_read_unlock();
1659 return -ENOENT;
1660 }
1661
1662 mesh_path_fix_nexthop(mpath, sta);
1663
1664 rcu_read_unlock();
1665 return 0;
1666 }
1667
mpath_set_pinfo(struct mesh_path * mpath,u8 * next_hop,struct mpath_info * pinfo)1668 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1669 struct mpath_info *pinfo)
1670 {
1671 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1672
1673 if (next_hop_sta)
1674 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1675 else
1676 eth_zero_addr(next_hop);
1677
1678 memset(pinfo, 0, sizeof(*pinfo));
1679
1680 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1681
1682 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1683 MPATH_INFO_SN |
1684 MPATH_INFO_METRIC |
1685 MPATH_INFO_EXPTIME |
1686 MPATH_INFO_DISCOVERY_TIMEOUT |
1687 MPATH_INFO_DISCOVERY_RETRIES |
1688 MPATH_INFO_FLAGS;
1689
1690 pinfo->frame_qlen = mpath->frame_queue.qlen;
1691 pinfo->sn = mpath->sn;
1692 pinfo->metric = mpath->metric;
1693 if (time_before(jiffies, mpath->exp_time))
1694 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1695 pinfo->discovery_timeout =
1696 jiffies_to_msecs(mpath->discovery_timeout);
1697 pinfo->discovery_retries = mpath->discovery_retries;
1698 if (mpath->flags & MESH_PATH_ACTIVE)
1699 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1700 if (mpath->flags & MESH_PATH_RESOLVING)
1701 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1702 if (mpath->flags & MESH_PATH_SN_VALID)
1703 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1704 if (mpath->flags & MESH_PATH_FIXED)
1705 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1706 if (mpath->flags & MESH_PATH_RESOLVED)
1707 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1708 }
1709
ieee80211_get_mpath(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)1710 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1711 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1712
1713 {
1714 struct ieee80211_sub_if_data *sdata;
1715 struct mesh_path *mpath;
1716
1717 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1718
1719 rcu_read_lock();
1720 mpath = mesh_path_lookup(sdata, dst);
1721 if (!mpath) {
1722 rcu_read_unlock();
1723 return -ENOENT;
1724 }
1725 memcpy(dst, mpath->dst, ETH_ALEN);
1726 mpath_set_pinfo(mpath, next_hop, pinfo);
1727 rcu_read_unlock();
1728 return 0;
1729 }
1730
ieee80211_dump_mpath(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)1731 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1732 int idx, u8 *dst, u8 *next_hop,
1733 struct mpath_info *pinfo)
1734 {
1735 struct ieee80211_sub_if_data *sdata;
1736 struct mesh_path *mpath;
1737
1738 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1739
1740 rcu_read_lock();
1741 mpath = mesh_path_lookup_by_idx(sdata, idx);
1742 if (!mpath) {
1743 rcu_read_unlock();
1744 return -ENOENT;
1745 }
1746 memcpy(dst, mpath->dst, ETH_ALEN);
1747 mpath_set_pinfo(mpath, next_hop, pinfo);
1748 rcu_read_unlock();
1749 return 0;
1750 }
1751
mpp_set_pinfo(struct mesh_path * mpath,u8 * mpp,struct mpath_info * pinfo)1752 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1753 struct mpath_info *pinfo)
1754 {
1755 memset(pinfo, 0, sizeof(*pinfo));
1756 memcpy(mpp, mpath->mpp, ETH_ALEN);
1757
1758 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1759 }
1760
ieee80211_get_mpp(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * mpp,struct mpath_info * pinfo)1761 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1762 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1763
1764 {
1765 struct ieee80211_sub_if_data *sdata;
1766 struct mesh_path *mpath;
1767
1768 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1769
1770 rcu_read_lock();
1771 mpath = mpp_path_lookup(sdata, dst);
1772 if (!mpath) {
1773 rcu_read_unlock();
1774 return -ENOENT;
1775 }
1776 memcpy(dst, mpath->dst, ETH_ALEN);
1777 mpp_set_pinfo(mpath, mpp, pinfo);
1778 rcu_read_unlock();
1779 return 0;
1780 }
1781
ieee80211_dump_mpp(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * mpp,struct mpath_info * pinfo)1782 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1783 int idx, u8 *dst, u8 *mpp,
1784 struct mpath_info *pinfo)
1785 {
1786 struct ieee80211_sub_if_data *sdata;
1787 struct mesh_path *mpath;
1788
1789 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1790
1791 rcu_read_lock();
1792 mpath = mpp_path_lookup_by_idx(sdata, idx);
1793 if (!mpath) {
1794 rcu_read_unlock();
1795 return -ENOENT;
1796 }
1797 memcpy(dst, mpath->dst, ETH_ALEN);
1798 mpp_set_pinfo(mpath, mpp, pinfo);
1799 rcu_read_unlock();
1800 return 0;
1801 }
1802
ieee80211_get_mesh_config(struct wiphy * wiphy,struct net_device * dev,struct mesh_config * conf)1803 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1804 struct net_device *dev,
1805 struct mesh_config *conf)
1806 {
1807 struct ieee80211_sub_if_data *sdata;
1808 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1809
1810 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1811 return 0;
1812 }
1813
_chg_mesh_attr(enum nl80211_meshconf_params parm,u32 mask)1814 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1815 {
1816 return (mask >> (parm-1)) & 0x1;
1817 }
1818
copy_mesh_setup(struct ieee80211_if_mesh * ifmsh,const struct mesh_setup * setup)1819 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1820 const struct mesh_setup *setup)
1821 {
1822 u8 *new_ie;
1823 const u8 *old_ie;
1824 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1825 struct ieee80211_sub_if_data, u.mesh);
1826
1827 /* allocate information elements */
1828 new_ie = NULL;
1829 old_ie = ifmsh->ie;
1830
1831 if (setup->ie_len) {
1832 new_ie = kmemdup(setup->ie, setup->ie_len,
1833 GFP_KERNEL);
1834 if (!new_ie)
1835 return -ENOMEM;
1836 }
1837 ifmsh->ie_len = setup->ie_len;
1838 ifmsh->ie = new_ie;
1839 kfree(old_ie);
1840
1841 /* now copy the rest of the setup parameters */
1842 ifmsh->mesh_id_len = setup->mesh_id_len;
1843 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1844 ifmsh->mesh_sp_id = setup->sync_method;
1845 ifmsh->mesh_pp_id = setup->path_sel_proto;
1846 ifmsh->mesh_pm_id = setup->path_metric;
1847 ifmsh->user_mpm = setup->user_mpm;
1848 ifmsh->mesh_auth_id = setup->auth_id;
1849 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1850 if (setup->is_authenticated)
1851 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1852 if (setup->is_secure)
1853 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1854
1855 /* mcast rate setting in Mesh Node */
1856 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1857 sizeof(setup->mcast_rate));
1858 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1859
1860 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1861 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1862
1863 return 0;
1864 }
1865
ieee80211_update_mesh_config(struct wiphy * wiphy,struct net_device * dev,u32 mask,const struct mesh_config * nconf)1866 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1867 struct net_device *dev, u32 mask,
1868 const struct mesh_config *nconf)
1869 {
1870 struct mesh_config *conf;
1871 struct ieee80211_sub_if_data *sdata;
1872 struct ieee80211_if_mesh *ifmsh;
1873
1874 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1875 ifmsh = &sdata->u.mesh;
1876
1877 /* Set the config options which we are interested in setting */
1878 conf = &(sdata->u.mesh.mshcfg);
1879 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1880 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1881 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1882 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1883 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1884 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1885 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1886 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1887 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1888 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1889 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1890 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1891 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1892 conf->element_ttl = nconf->element_ttl;
1893 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1894 if (ifmsh->user_mpm)
1895 return -EBUSY;
1896 conf->auto_open_plinks = nconf->auto_open_plinks;
1897 }
1898 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1899 conf->dot11MeshNbrOffsetMaxNeighbor =
1900 nconf->dot11MeshNbrOffsetMaxNeighbor;
1901 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1902 conf->dot11MeshHWMPmaxPREQretries =
1903 nconf->dot11MeshHWMPmaxPREQretries;
1904 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1905 conf->path_refresh_time = nconf->path_refresh_time;
1906 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1907 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1908 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1909 conf->dot11MeshHWMPactivePathTimeout =
1910 nconf->dot11MeshHWMPactivePathTimeout;
1911 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1912 conf->dot11MeshHWMPpreqMinInterval =
1913 nconf->dot11MeshHWMPpreqMinInterval;
1914 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1915 conf->dot11MeshHWMPperrMinInterval =
1916 nconf->dot11MeshHWMPperrMinInterval;
1917 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1918 mask))
1919 conf->dot11MeshHWMPnetDiameterTraversalTime =
1920 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1921 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1922 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1923 ieee80211_mesh_root_setup(ifmsh);
1924 }
1925 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1926 /* our current gate announcement implementation rides on root
1927 * announcements, so require this ifmsh to also be a root node
1928 * */
1929 if (nconf->dot11MeshGateAnnouncementProtocol &&
1930 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1931 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1932 ieee80211_mesh_root_setup(ifmsh);
1933 }
1934 conf->dot11MeshGateAnnouncementProtocol =
1935 nconf->dot11MeshGateAnnouncementProtocol;
1936 }
1937 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1938 conf->dot11MeshHWMPRannInterval =
1939 nconf->dot11MeshHWMPRannInterval;
1940 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1941 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1942 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1943 /* our RSSI threshold implementation is supported only for
1944 * devices that report signal in dBm.
1945 */
1946 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1947 return -ENOTSUPP;
1948 conf->rssi_threshold = nconf->rssi_threshold;
1949 }
1950 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1951 conf->ht_opmode = nconf->ht_opmode;
1952 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1953 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1954 }
1955 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1956 conf->dot11MeshHWMPactivePathToRootTimeout =
1957 nconf->dot11MeshHWMPactivePathToRootTimeout;
1958 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1959 conf->dot11MeshHWMProotInterval =
1960 nconf->dot11MeshHWMProotInterval;
1961 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1962 conf->dot11MeshHWMPconfirmationInterval =
1963 nconf->dot11MeshHWMPconfirmationInterval;
1964 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1965 conf->power_mode = nconf->power_mode;
1966 ieee80211_mps_local_status_update(sdata);
1967 }
1968 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1969 conf->dot11MeshAwakeWindowDuration =
1970 nconf->dot11MeshAwakeWindowDuration;
1971 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1972 conf->plink_timeout = nconf->plink_timeout;
1973 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1974 return 0;
1975 }
1976
ieee80211_join_mesh(struct wiphy * wiphy,struct net_device * dev,const struct mesh_config * conf,const struct mesh_setup * setup)1977 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1978 const struct mesh_config *conf,
1979 const struct mesh_setup *setup)
1980 {
1981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1983 int err;
1984
1985 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1986 err = copy_mesh_setup(ifmsh, setup);
1987 if (err)
1988 return err;
1989
1990 /* can mesh use other SMPS modes? */
1991 sdata->smps_mode = IEEE80211_SMPS_OFF;
1992 sdata->needed_rx_chains = sdata->local->rx_chains;
1993
1994 mutex_lock(&sdata->local->mtx);
1995 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1996 IEEE80211_CHANCTX_SHARED);
1997 mutex_unlock(&sdata->local->mtx);
1998 if (err)
1999 return err;
2000
2001 return ieee80211_start_mesh(sdata);
2002 }
2003
ieee80211_leave_mesh(struct wiphy * wiphy,struct net_device * dev)2004 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2005 {
2006 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2007
2008 ieee80211_stop_mesh(sdata);
2009 mutex_lock(&sdata->local->mtx);
2010 ieee80211_vif_release_channel(sdata);
2011 mutex_unlock(&sdata->local->mtx);
2012
2013 return 0;
2014 }
2015 #endif
2016
ieee80211_change_bss(struct wiphy * wiphy,struct net_device * dev,struct bss_parameters * params)2017 static int ieee80211_change_bss(struct wiphy *wiphy,
2018 struct net_device *dev,
2019 struct bss_parameters *params)
2020 {
2021 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2022 struct ieee80211_supported_band *sband;
2023 u32 changed = 0;
2024
2025 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2026 return -ENOENT;
2027
2028 sband = ieee80211_get_sband(sdata);
2029 if (!sband)
2030 return -EINVAL;
2031
2032 if (params->use_cts_prot >= 0) {
2033 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2034 changed |= BSS_CHANGED_ERP_CTS_PROT;
2035 }
2036 if (params->use_short_preamble >= 0) {
2037 sdata->vif.bss_conf.use_short_preamble =
2038 params->use_short_preamble;
2039 changed |= BSS_CHANGED_ERP_PREAMBLE;
2040 }
2041
2042 if (!sdata->vif.bss_conf.use_short_slot &&
2043 sband->band == NL80211_BAND_5GHZ) {
2044 sdata->vif.bss_conf.use_short_slot = true;
2045 changed |= BSS_CHANGED_ERP_SLOT;
2046 }
2047
2048 if (params->use_short_slot_time >= 0) {
2049 sdata->vif.bss_conf.use_short_slot =
2050 params->use_short_slot_time;
2051 changed |= BSS_CHANGED_ERP_SLOT;
2052 }
2053
2054 if (params->basic_rates) {
2055 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2056 wiphy->bands[sband->band],
2057 params->basic_rates,
2058 params->basic_rates_len,
2059 &sdata->vif.bss_conf.basic_rates);
2060 changed |= BSS_CHANGED_BASIC_RATES;
2061 }
2062
2063 if (params->ap_isolate >= 0) {
2064 if (params->ap_isolate)
2065 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2066 else
2067 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2068 ieee80211_check_fast_rx_iface(sdata);
2069 }
2070
2071 if (params->ht_opmode >= 0) {
2072 sdata->vif.bss_conf.ht_operation_mode =
2073 (u16) params->ht_opmode;
2074 changed |= BSS_CHANGED_HT;
2075 }
2076
2077 if (params->p2p_ctwindow >= 0) {
2078 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2079 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2080 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2081 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2082 changed |= BSS_CHANGED_P2P_PS;
2083 }
2084
2085 if (params->p2p_opp_ps > 0) {
2086 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2087 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2088 changed |= BSS_CHANGED_P2P_PS;
2089 } else if (params->p2p_opp_ps == 0) {
2090 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2091 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2092 changed |= BSS_CHANGED_P2P_PS;
2093 }
2094
2095 ieee80211_bss_info_change_notify(sdata, changed);
2096
2097 return 0;
2098 }
2099
ieee80211_set_txq_params(struct wiphy * wiphy,struct net_device * dev,struct ieee80211_txq_params * params)2100 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2101 struct net_device *dev,
2102 struct ieee80211_txq_params *params)
2103 {
2104 struct ieee80211_local *local = wiphy_priv(wiphy);
2105 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2106 struct ieee80211_tx_queue_params p;
2107
2108 if (!local->ops->conf_tx)
2109 return -EOPNOTSUPP;
2110
2111 if (local->hw.queues < IEEE80211_NUM_ACS)
2112 return -EOPNOTSUPP;
2113
2114 memset(&p, 0, sizeof(p));
2115 p.aifs = params->aifs;
2116 p.cw_max = params->cwmax;
2117 p.cw_min = params->cwmin;
2118 p.txop = params->txop;
2119
2120 /*
2121 * Setting tx queue params disables u-apsd because it's only
2122 * called in master mode.
2123 */
2124 p.uapsd = false;
2125
2126 sdata->tx_conf[params->ac] = p;
2127 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2128 wiphy_debug(local->hw.wiphy,
2129 "failed to set TX queue parameters for AC %d\n",
2130 params->ac);
2131 return -EINVAL;
2132 }
2133
2134 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2135
2136 return 0;
2137 }
2138
2139 #ifdef CONFIG_PM
ieee80211_suspend(struct wiphy * wiphy,struct cfg80211_wowlan * wowlan)2140 static int ieee80211_suspend(struct wiphy *wiphy,
2141 struct cfg80211_wowlan *wowlan)
2142 {
2143 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2144 }
2145
ieee80211_resume(struct wiphy * wiphy)2146 static int ieee80211_resume(struct wiphy *wiphy)
2147 {
2148 return __ieee80211_resume(wiphy_priv(wiphy));
2149 }
2150 #else
2151 #define ieee80211_suspend NULL
2152 #define ieee80211_resume NULL
2153 #endif
2154
ieee80211_scan(struct wiphy * wiphy,struct cfg80211_scan_request * req)2155 static int ieee80211_scan(struct wiphy *wiphy,
2156 struct cfg80211_scan_request *req)
2157 {
2158 struct ieee80211_sub_if_data *sdata;
2159
2160 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2161
2162 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2163 case NL80211_IFTYPE_STATION:
2164 case NL80211_IFTYPE_ADHOC:
2165 case NL80211_IFTYPE_MESH_POINT:
2166 case NL80211_IFTYPE_P2P_CLIENT:
2167 case NL80211_IFTYPE_P2P_DEVICE:
2168 break;
2169 case NL80211_IFTYPE_P2P_GO:
2170 if (sdata->local->ops->hw_scan)
2171 break;
2172 /*
2173 * FIXME: implement NoA while scanning in software,
2174 * for now fall through to allow scanning only when
2175 * beaconing hasn't been configured yet
2176 */
2177 case NL80211_IFTYPE_AP:
2178 /*
2179 * If the scan has been forced (and the driver supports
2180 * forcing), don't care about being beaconing already.
2181 * This will create problems to the attached stations (e.g. all
2182 * the frames sent while scanning on other channel will be
2183 * lost)
2184 */
2185 if (sdata->u.ap.beacon &&
2186 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2187 !(req->flags & NL80211_SCAN_FLAG_AP)))
2188 return -EOPNOTSUPP;
2189 break;
2190 case NL80211_IFTYPE_NAN:
2191 default:
2192 return -EOPNOTSUPP;
2193 }
2194
2195 return ieee80211_request_scan(sdata, req);
2196 }
2197
ieee80211_abort_scan(struct wiphy * wiphy,struct wireless_dev * wdev)2198 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2199 {
2200 ieee80211_scan_cancel(wiphy_priv(wiphy));
2201 }
2202
2203 static int
ieee80211_sched_scan_start(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_sched_scan_request * req)2204 ieee80211_sched_scan_start(struct wiphy *wiphy,
2205 struct net_device *dev,
2206 struct cfg80211_sched_scan_request *req)
2207 {
2208 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2209
2210 if (!sdata->local->ops->sched_scan_start)
2211 return -EOPNOTSUPP;
2212
2213 return ieee80211_request_sched_scan_start(sdata, req);
2214 }
2215
2216 static int
ieee80211_sched_scan_stop(struct wiphy * wiphy,struct net_device * dev)2217 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2218 {
2219 struct ieee80211_local *local = wiphy_priv(wiphy);
2220
2221 if (!local->ops->sched_scan_stop)
2222 return -EOPNOTSUPP;
2223
2224 return ieee80211_request_sched_scan_stop(local);
2225 }
2226
ieee80211_auth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_auth_request * req)2227 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2228 struct cfg80211_auth_request *req)
2229 {
2230 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2231 }
2232
ieee80211_assoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_assoc_request * req)2233 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2234 struct cfg80211_assoc_request *req)
2235 {
2236 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2237 }
2238
ieee80211_deauth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_deauth_request * req)2239 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2240 struct cfg80211_deauth_request *req)
2241 {
2242 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2243 }
2244
ieee80211_disassoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_disassoc_request * req)2245 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2246 struct cfg80211_disassoc_request *req)
2247 {
2248 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2249 }
2250
ieee80211_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2251 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2252 struct cfg80211_ibss_params *params)
2253 {
2254 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2255 }
2256
ieee80211_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2257 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2258 {
2259 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2260 }
2261
ieee80211_join_ocb(struct wiphy * wiphy,struct net_device * dev,struct ocb_setup * setup)2262 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2263 struct ocb_setup *setup)
2264 {
2265 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2266 }
2267
ieee80211_leave_ocb(struct wiphy * wiphy,struct net_device * dev)2268 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2269 {
2270 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2271 }
2272
ieee80211_set_mcast_rate(struct wiphy * wiphy,struct net_device * dev,int rate[NUM_NL80211_BANDS])2273 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2274 int rate[NUM_NL80211_BANDS])
2275 {
2276 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2277
2278 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2279 sizeof(int) * NUM_NL80211_BANDS);
2280
2281 return 0;
2282 }
2283
ieee80211_set_wiphy_params(struct wiphy * wiphy,u32 changed)2284 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2285 {
2286 struct ieee80211_local *local = wiphy_priv(wiphy);
2287 int err;
2288
2289 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2290 ieee80211_check_fast_xmit_all(local);
2291
2292 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2293
2294 if (err) {
2295 ieee80211_check_fast_xmit_all(local);
2296 return err;
2297 }
2298 }
2299
2300 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2301 (changed & WIPHY_PARAM_DYN_ACK)) {
2302 s16 coverage_class;
2303
2304 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2305 wiphy->coverage_class : -1;
2306 err = drv_set_coverage_class(local, coverage_class);
2307
2308 if (err)
2309 return err;
2310 }
2311
2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2313 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2314
2315 if (err)
2316 return err;
2317 }
2318
2319 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2320 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2321 return -EINVAL;
2322 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2323 }
2324 if (changed & WIPHY_PARAM_RETRY_LONG) {
2325 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2326 return -EINVAL;
2327 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2328 }
2329 if (changed &
2330 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2331 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2332
2333 return 0;
2334 }
2335
ieee80211_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)2336 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2337 struct wireless_dev *wdev,
2338 enum nl80211_tx_power_setting type, int mbm)
2339 {
2340 struct ieee80211_local *local = wiphy_priv(wiphy);
2341 struct ieee80211_sub_if_data *sdata;
2342 enum nl80211_tx_power_setting txp_type = type;
2343 bool update_txp_type = false;
2344 bool has_monitor = false;
2345
2346 if (wdev) {
2347 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2348
2349 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2350 sdata = rtnl_dereference(local->monitor_sdata);
2351 if (!sdata)
2352 return -EOPNOTSUPP;
2353 }
2354
2355 switch (type) {
2356 case NL80211_TX_POWER_AUTOMATIC:
2357 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2358 txp_type = NL80211_TX_POWER_LIMITED;
2359 break;
2360 case NL80211_TX_POWER_LIMITED:
2361 case NL80211_TX_POWER_FIXED:
2362 if (mbm < 0 || (mbm % 100))
2363 return -EOPNOTSUPP;
2364 sdata->user_power_level = MBM_TO_DBM(mbm);
2365 break;
2366 }
2367
2368 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2369 update_txp_type = true;
2370 sdata->vif.bss_conf.txpower_type = txp_type;
2371 }
2372
2373 ieee80211_recalc_txpower(sdata, update_txp_type);
2374
2375 return 0;
2376 }
2377
2378 switch (type) {
2379 case NL80211_TX_POWER_AUTOMATIC:
2380 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2381 txp_type = NL80211_TX_POWER_LIMITED;
2382 break;
2383 case NL80211_TX_POWER_LIMITED:
2384 case NL80211_TX_POWER_FIXED:
2385 if (mbm < 0 || (mbm % 100))
2386 return -EOPNOTSUPP;
2387 local->user_power_level = MBM_TO_DBM(mbm);
2388 break;
2389 }
2390
2391 mutex_lock(&local->iflist_mtx);
2392 list_for_each_entry(sdata, &local->interfaces, list) {
2393 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2394 has_monitor = true;
2395 continue;
2396 }
2397 sdata->user_power_level = local->user_power_level;
2398 if (txp_type != sdata->vif.bss_conf.txpower_type)
2399 update_txp_type = true;
2400 sdata->vif.bss_conf.txpower_type = txp_type;
2401 }
2402 list_for_each_entry(sdata, &local->interfaces, list) {
2403 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2404 continue;
2405 ieee80211_recalc_txpower(sdata, update_txp_type);
2406 }
2407 mutex_unlock(&local->iflist_mtx);
2408
2409 if (has_monitor) {
2410 sdata = rtnl_dereference(local->monitor_sdata);
2411 if (sdata) {
2412 sdata->user_power_level = local->user_power_level;
2413 if (txp_type != sdata->vif.bss_conf.txpower_type)
2414 update_txp_type = true;
2415 sdata->vif.bss_conf.txpower_type = txp_type;
2416
2417 ieee80211_recalc_txpower(sdata, update_txp_type);
2418 }
2419 }
2420
2421 return 0;
2422 }
2423
ieee80211_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)2424 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2425 struct wireless_dev *wdev,
2426 int *dbm)
2427 {
2428 struct ieee80211_local *local = wiphy_priv(wiphy);
2429 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2430
2431 if (local->ops->get_txpower)
2432 return drv_get_txpower(local, sdata, dbm);
2433
2434 if (!local->use_chanctx)
2435 *dbm = local->hw.conf.power_level;
2436 else
2437 *dbm = sdata->vif.bss_conf.txpower;
2438
2439 return 0;
2440 }
2441
ieee80211_set_wds_peer(struct wiphy * wiphy,struct net_device * dev,const u8 * addr)2442 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2443 const u8 *addr)
2444 {
2445 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2446
2447 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2448
2449 return 0;
2450 }
2451
ieee80211_rfkill_poll(struct wiphy * wiphy)2452 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2453 {
2454 struct ieee80211_local *local = wiphy_priv(wiphy);
2455
2456 drv_rfkill_poll(local);
2457 }
2458
2459 #ifdef CONFIG_NL80211_TESTMODE
ieee80211_testmode_cmd(struct wiphy * wiphy,struct wireless_dev * wdev,void * data,int len)2460 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2461 struct wireless_dev *wdev,
2462 void *data, int len)
2463 {
2464 struct ieee80211_local *local = wiphy_priv(wiphy);
2465 struct ieee80211_vif *vif = NULL;
2466
2467 if (!local->ops->testmode_cmd)
2468 return -EOPNOTSUPP;
2469
2470 if (wdev) {
2471 struct ieee80211_sub_if_data *sdata;
2472
2473 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2474 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2475 vif = &sdata->vif;
2476 }
2477
2478 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2479 }
2480
ieee80211_testmode_dump(struct wiphy * wiphy,struct sk_buff * skb,struct netlink_callback * cb,void * data,int len)2481 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2482 struct sk_buff *skb,
2483 struct netlink_callback *cb,
2484 void *data, int len)
2485 {
2486 struct ieee80211_local *local = wiphy_priv(wiphy);
2487
2488 if (!local->ops->testmode_dump)
2489 return -EOPNOTSUPP;
2490
2491 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2492 }
2493 #endif
2494
__ieee80211_request_smps_ap(struct ieee80211_sub_if_data * sdata,enum ieee80211_smps_mode smps_mode)2495 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2496 enum ieee80211_smps_mode smps_mode)
2497 {
2498 struct sta_info *sta;
2499 enum ieee80211_smps_mode old_req;
2500
2501 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2502 return -EINVAL;
2503
2504 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2505 return 0;
2506
2507 old_req = sdata->u.ap.req_smps;
2508 sdata->u.ap.req_smps = smps_mode;
2509
2510 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2511 if (old_req == smps_mode ||
2512 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2513 return 0;
2514
2515 /* If no associated stations, there's no need to do anything */
2516 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2517 sdata->smps_mode = smps_mode;
2518 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2519 return 0;
2520 }
2521
2522 ht_dbg(sdata,
2523 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2524 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2525
2526 mutex_lock(&sdata->local->sta_mtx);
2527 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2528 /*
2529 * Only stations associated to our AP and
2530 * associated VLANs
2531 */
2532 if (sta->sdata->bss != &sdata->u.ap)
2533 continue;
2534
2535 /* This station doesn't support MIMO - skip it */
2536 if (sta_info_tx_streams(sta) == 1)
2537 continue;
2538
2539 /*
2540 * Don't wake up a STA just to send the action frame
2541 * unless we are getting more restrictive.
2542 */
2543 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2544 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2545 smps_mode)) {
2546 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2547 sta->sta.addr);
2548 continue;
2549 }
2550
2551 /*
2552 * If the STA is not authorized, wait until it gets
2553 * authorized and the action frame will be sent then.
2554 */
2555 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2556 continue;
2557
2558 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2559 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2560 sdata->vif.bss_conf.bssid);
2561 }
2562 mutex_unlock(&sdata->local->sta_mtx);
2563
2564 sdata->smps_mode = smps_mode;
2565 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2566
2567 return 0;
2568 }
2569
__ieee80211_request_smps_mgd(struct ieee80211_sub_if_data * sdata,enum ieee80211_smps_mode smps_mode)2570 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2571 enum ieee80211_smps_mode smps_mode)
2572 {
2573 const u8 *ap;
2574 enum ieee80211_smps_mode old_req;
2575 int err;
2576 struct sta_info *sta;
2577 bool tdls_peer_found = false;
2578
2579 lockdep_assert_held(&sdata->wdev.mtx);
2580
2581 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2582 return -EINVAL;
2583
2584 old_req = sdata->u.mgd.req_smps;
2585 sdata->u.mgd.req_smps = smps_mode;
2586
2587 if (old_req == smps_mode &&
2588 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2589 return 0;
2590
2591 /*
2592 * If not associated, or current association is not an HT
2593 * association, there's no need to do anything, just store
2594 * the new value until we associate.
2595 */
2596 if (!sdata->u.mgd.associated ||
2597 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2598 return 0;
2599
2600 ap = sdata->u.mgd.associated->bssid;
2601
2602 rcu_read_lock();
2603 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2604 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2605 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2606 continue;
2607
2608 tdls_peer_found = true;
2609 break;
2610 }
2611 rcu_read_unlock();
2612
2613 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2614 if (tdls_peer_found || !sdata->u.mgd.powersave)
2615 smps_mode = IEEE80211_SMPS_OFF;
2616 else
2617 smps_mode = IEEE80211_SMPS_DYNAMIC;
2618 }
2619
2620 /* send SM PS frame to AP */
2621 err = ieee80211_send_smps_action(sdata, smps_mode,
2622 ap, ap);
2623 if (err)
2624 sdata->u.mgd.req_smps = old_req;
2625 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2626 ieee80211_teardown_tdls_peers(sdata);
2627
2628 return err;
2629 }
2630
ieee80211_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2631 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2632 bool enabled, int timeout)
2633 {
2634 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2635 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2636
2637 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2638 return -EOPNOTSUPP;
2639
2640 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2641 return -EOPNOTSUPP;
2642
2643 if (enabled == sdata->u.mgd.powersave &&
2644 timeout == local->dynamic_ps_forced_timeout)
2645 return 0;
2646
2647 sdata->u.mgd.powersave = enabled;
2648 local->dynamic_ps_forced_timeout = timeout;
2649
2650 /* no change, but if automatic follow powersave */
2651 sdata_lock(sdata);
2652 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2653 sdata_unlock(sdata);
2654
2655 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2656 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2657
2658 ieee80211_recalc_ps(local);
2659 ieee80211_recalc_ps_vif(sdata);
2660
2661 return 0;
2662 }
2663
ieee80211_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)2664 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2665 struct net_device *dev,
2666 s32 rssi_thold, u32 rssi_hyst)
2667 {
2668 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2669 struct ieee80211_vif *vif = &sdata->vif;
2670 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2671
2672 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2673 rssi_hyst == bss_conf->cqm_rssi_hyst)
2674 return 0;
2675
2676 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2677 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2678 return -EOPNOTSUPP;
2679
2680 bss_conf->cqm_rssi_thold = rssi_thold;
2681 bss_conf->cqm_rssi_hyst = rssi_hyst;
2682 sdata->u.mgd.last_cqm_event_signal = 0;
2683
2684 /* tell the driver upon association, unless already associated */
2685 if (sdata->u.mgd.associated &&
2686 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2687 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2688
2689 return 0;
2690 }
2691
ieee80211_set_bitrate_mask(struct wiphy * wiphy,struct net_device * dev,const u8 * addr,const struct cfg80211_bitrate_mask * mask)2692 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2693 struct net_device *dev,
2694 const u8 *addr,
2695 const struct cfg80211_bitrate_mask *mask)
2696 {
2697 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2698 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2699 int i, ret;
2700
2701 if (!ieee80211_sdata_running(sdata))
2702 return -ENETDOWN;
2703
2704 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2705 ret = drv_set_bitrate_mask(local, sdata, mask);
2706 if (ret)
2707 return ret;
2708 }
2709
2710 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2711 struct ieee80211_supported_band *sband = wiphy->bands[i];
2712 int j;
2713
2714 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2715 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2716 sizeof(mask->control[i].ht_mcs));
2717 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2718 mask->control[i].vht_mcs,
2719 sizeof(mask->control[i].vht_mcs));
2720
2721 sdata->rc_has_mcs_mask[i] = false;
2722 sdata->rc_has_vht_mcs_mask[i] = false;
2723 if (!sband)
2724 continue;
2725
2726 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2727 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2728 sdata->rc_has_mcs_mask[i] = true;
2729 break;
2730 }
2731 }
2732
2733 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2734 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2735 sdata->rc_has_vht_mcs_mask[i] = true;
2736 break;
2737 }
2738 }
2739 }
2740
2741 return 0;
2742 }
2743
ieee80211_start_radar_detection(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_chan_def * chandef,u32 cac_time_ms)2744 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2745 struct net_device *dev,
2746 struct cfg80211_chan_def *chandef,
2747 u32 cac_time_ms)
2748 {
2749 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2750 struct ieee80211_local *local = sdata->local;
2751 int err;
2752
2753 mutex_lock(&local->mtx);
2754 if (!list_empty(&local->roc_list) || local->scanning) {
2755 err = -EBUSY;
2756 goto out_unlock;
2757 }
2758
2759 /* whatever, but channel contexts should not complain about that one */
2760 sdata->smps_mode = IEEE80211_SMPS_OFF;
2761 sdata->needed_rx_chains = local->rx_chains;
2762
2763 err = ieee80211_vif_use_channel(sdata, chandef,
2764 IEEE80211_CHANCTX_SHARED);
2765 if (err)
2766 goto out_unlock;
2767
2768 ieee80211_queue_delayed_work(&sdata->local->hw,
2769 &sdata->dfs_cac_timer_work,
2770 msecs_to_jiffies(cac_time_ms));
2771
2772 out_unlock:
2773 mutex_unlock(&local->mtx);
2774 return err;
2775 }
2776
2777 static struct cfg80211_beacon_data *
cfg80211_beacon_dup(struct cfg80211_beacon_data * beacon)2778 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2779 {
2780 struct cfg80211_beacon_data *new_beacon;
2781 u8 *pos;
2782 int len;
2783
2784 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2785 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2786 beacon->probe_resp_len;
2787
2788 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2789 if (!new_beacon)
2790 return NULL;
2791
2792 pos = (u8 *)(new_beacon + 1);
2793 if (beacon->head_len) {
2794 new_beacon->head_len = beacon->head_len;
2795 new_beacon->head = pos;
2796 memcpy(pos, beacon->head, beacon->head_len);
2797 pos += beacon->head_len;
2798 }
2799 if (beacon->tail_len) {
2800 new_beacon->tail_len = beacon->tail_len;
2801 new_beacon->tail = pos;
2802 memcpy(pos, beacon->tail, beacon->tail_len);
2803 pos += beacon->tail_len;
2804 }
2805 if (beacon->beacon_ies_len) {
2806 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2807 new_beacon->beacon_ies = pos;
2808 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2809 pos += beacon->beacon_ies_len;
2810 }
2811 if (beacon->proberesp_ies_len) {
2812 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2813 new_beacon->proberesp_ies = pos;
2814 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2815 pos += beacon->proberesp_ies_len;
2816 }
2817 if (beacon->assocresp_ies_len) {
2818 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2819 new_beacon->assocresp_ies = pos;
2820 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2821 pos += beacon->assocresp_ies_len;
2822 }
2823 if (beacon->probe_resp_len) {
2824 new_beacon->probe_resp_len = beacon->probe_resp_len;
2825 new_beacon->probe_resp = pos;
2826 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2827 pos += beacon->probe_resp_len;
2828 }
2829
2830 return new_beacon;
2831 }
2832
ieee80211_csa_finish(struct ieee80211_vif * vif)2833 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2834 {
2835 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2836
2837 ieee80211_queue_work(&sdata->local->hw,
2838 &sdata->csa_finalize_work);
2839 }
2840 EXPORT_SYMBOL(ieee80211_csa_finish);
2841
ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data * sdata,u32 * changed)2842 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2843 u32 *changed)
2844 {
2845 int err;
2846
2847 switch (sdata->vif.type) {
2848 case NL80211_IFTYPE_AP:
2849 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2850 NULL);
2851 kfree(sdata->u.ap.next_beacon);
2852 sdata->u.ap.next_beacon = NULL;
2853
2854 if (err < 0)
2855 return err;
2856 *changed |= err;
2857 break;
2858 case NL80211_IFTYPE_ADHOC:
2859 err = ieee80211_ibss_finish_csa(sdata);
2860 if (err < 0)
2861 return err;
2862 *changed |= err;
2863 break;
2864 #ifdef CONFIG_MAC80211_MESH
2865 case NL80211_IFTYPE_MESH_POINT:
2866 err = ieee80211_mesh_finish_csa(sdata);
2867 if (err < 0)
2868 return err;
2869 *changed |= err;
2870 break;
2871 #endif
2872 default:
2873 WARN_ON(1);
2874 return -EINVAL;
2875 }
2876
2877 return 0;
2878 }
2879
__ieee80211_csa_finalize(struct ieee80211_sub_if_data * sdata)2880 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2881 {
2882 struct ieee80211_local *local = sdata->local;
2883 u32 changed = 0;
2884 int err;
2885
2886 sdata_assert_lock(sdata);
2887 lockdep_assert_held(&local->mtx);
2888 lockdep_assert_held(&local->chanctx_mtx);
2889
2890 /*
2891 * using reservation isn't immediate as it may be deferred until later
2892 * with multi-vif. once reservation is complete it will re-schedule the
2893 * work with no reserved_chanctx so verify chandef to check if it
2894 * completed successfully
2895 */
2896
2897 if (sdata->reserved_chanctx) {
2898 /*
2899 * with multi-vif csa driver may call ieee80211_csa_finish()
2900 * many times while waiting for other interfaces to use their
2901 * reservations
2902 */
2903 if (sdata->reserved_ready)
2904 return 0;
2905
2906 return ieee80211_vif_use_reserved_context(sdata);
2907 }
2908
2909 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2910 &sdata->csa_chandef))
2911 return -EINVAL;
2912
2913 sdata->vif.csa_active = false;
2914
2915 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2916 if (err)
2917 return err;
2918
2919 ieee80211_bss_info_change_notify(sdata, changed);
2920
2921 if (sdata->csa_block_tx) {
2922 ieee80211_wake_vif_queues(local, sdata,
2923 IEEE80211_QUEUE_STOP_REASON_CSA);
2924 sdata->csa_block_tx = false;
2925 }
2926
2927 err = drv_post_channel_switch(sdata);
2928 if (err)
2929 return err;
2930
2931 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2932
2933 return 0;
2934 }
2935
ieee80211_csa_finalize(struct ieee80211_sub_if_data * sdata)2936 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2937 {
2938 if (__ieee80211_csa_finalize(sdata)) {
2939 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2940 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2941 GFP_KERNEL);
2942 }
2943 }
2944
ieee80211_csa_finalize_work(struct work_struct * work)2945 void ieee80211_csa_finalize_work(struct work_struct *work)
2946 {
2947 struct ieee80211_sub_if_data *sdata =
2948 container_of(work, struct ieee80211_sub_if_data,
2949 csa_finalize_work);
2950 struct ieee80211_local *local = sdata->local;
2951
2952 sdata_lock(sdata);
2953 mutex_lock(&local->mtx);
2954 mutex_lock(&local->chanctx_mtx);
2955
2956 /* AP might have been stopped while waiting for the lock. */
2957 if (!sdata->vif.csa_active)
2958 goto unlock;
2959
2960 if (!ieee80211_sdata_running(sdata))
2961 goto unlock;
2962
2963 ieee80211_csa_finalize(sdata);
2964
2965 unlock:
2966 mutex_unlock(&local->chanctx_mtx);
2967 mutex_unlock(&local->mtx);
2968 sdata_unlock(sdata);
2969 }
2970
ieee80211_set_csa_beacon(struct ieee80211_sub_if_data * sdata,struct cfg80211_csa_settings * params,u32 * changed)2971 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2972 struct cfg80211_csa_settings *params,
2973 u32 *changed)
2974 {
2975 struct ieee80211_csa_settings csa = {};
2976 int err;
2977
2978 switch (sdata->vif.type) {
2979 case NL80211_IFTYPE_AP:
2980 sdata->u.ap.next_beacon =
2981 cfg80211_beacon_dup(¶ms->beacon_after);
2982 if (!sdata->u.ap.next_beacon)
2983 return -ENOMEM;
2984
2985 /*
2986 * With a count of 0, we don't have to wait for any
2987 * TBTT before switching, so complete the CSA
2988 * immediately. In theory, with a count == 1 we
2989 * should delay the switch until just before the next
2990 * TBTT, but that would complicate things so we switch
2991 * immediately too. If we would delay the switch
2992 * until the next TBTT, we would have to set the probe
2993 * response here.
2994 *
2995 * TODO: A channel switch with count <= 1 without
2996 * sending a CSA action frame is kind of useless,
2997 * because the clients won't know we're changing
2998 * channels. The action frame must be implemented
2999 * either here or in the userspace.
3000 */
3001 if (params->count <= 1)
3002 break;
3003
3004 if ((params->n_counter_offsets_beacon >
3005 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3006 (params->n_counter_offsets_presp >
3007 IEEE80211_MAX_CSA_COUNTERS_NUM))
3008 return -EINVAL;
3009
3010 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3011 csa.counter_offsets_presp = params->counter_offsets_presp;
3012 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3013 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3014 csa.count = params->count;
3015
3016 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa);
3017 if (err < 0) {
3018 kfree(sdata->u.ap.next_beacon);
3019 return err;
3020 }
3021 *changed |= err;
3022
3023 break;
3024 case NL80211_IFTYPE_ADHOC:
3025 if (!sdata->vif.bss_conf.ibss_joined)
3026 return -EINVAL;
3027
3028 if (params->chandef.width != sdata->u.ibss.chandef.width)
3029 return -EINVAL;
3030
3031 switch (params->chandef.width) {
3032 case NL80211_CHAN_WIDTH_40:
3033 if (cfg80211_get_chandef_type(¶ms->chandef) !=
3034 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3035 return -EINVAL;
3036 case NL80211_CHAN_WIDTH_5:
3037 case NL80211_CHAN_WIDTH_10:
3038 case NL80211_CHAN_WIDTH_20_NOHT:
3039 case NL80211_CHAN_WIDTH_20:
3040 break;
3041 default:
3042 return -EINVAL;
3043 }
3044
3045 /* changes into another band are not supported */
3046 if (sdata->u.ibss.chandef.chan->band !=
3047 params->chandef.chan->band)
3048 return -EINVAL;
3049
3050 /* see comments in the NL80211_IFTYPE_AP block */
3051 if (params->count > 1) {
3052 err = ieee80211_ibss_csa_beacon(sdata, params);
3053 if (err < 0)
3054 return err;
3055 *changed |= err;
3056 }
3057
3058 ieee80211_send_action_csa(sdata, params);
3059
3060 break;
3061 #ifdef CONFIG_MAC80211_MESH
3062 case NL80211_IFTYPE_MESH_POINT: {
3063 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3064
3065 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3066 return -EINVAL;
3067
3068 /* changes into another band are not supported */
3069 if (sdata->vif.bss_conf.chandef.chan->band !=
3070 params->chandef.chan->band)
3071 return -EINVAL;
3072
3073 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3074 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3075 if (!ifmsh->pre_value)
3076 ifmsh->pre_value = 1;
3077 else
3078 ifmsh->pre_value++;
3079 }
3080
3081 /* see comments in the NL80211_IFTYPE_AP block */
3082 if (params->count > 1) {
3083 err = ieee80211_mesh_csa_beacon(sdata, params);
3084 if (err < 0) {
3085 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3086 return err;
3087 }
3088 *changed |= err;
3089 }
3090
3091 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3092 ieee80211_send_action_csa(sdata, params);
3093
3094 break;
3095 }
3096 #endif
3097 default:
3098 return -EOPNOTSUPP;
3099 }
3100
3101 return 0;
3102 }
3103
3104 static int
__ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)3105 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3106 struct cfg80211_csa_settings *params)
3107 {
3108 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3109 struct ieee80211_local *local = sdata->local;
3110 struct ieee80211_channel_switch ch_switch;
3111 struct ieee80211_chanctx_conf *conf;
3112 struct ieee80211_chanctx *chanctx;
3113 u32 changed = 0;
3114 int err;
3115
3116 sdata_assert_lock(sdata);
3117 lockdep_assert_held(&local->mtx);
3118
3119 if (!list_empty(&local->roc_list) || local->scanning)
3120 return -EBUSY;
3121
3122 if (sdata->wdev.cac_started)
3123 return -EBUSY;
3124
3125 if (cfg80211_chandef_identical(¶ms->chandef,
3126 &sdata->vif.bss_conf.chandef))
3127 return -EINVAL;
3128
3129 /* don't allow another channel switch if one is already active. */
3130 if (sdata->vif.csa_active)
3131 return -EBUSY;
3132
3133 mutex_lock(&local->chanctx_mtx);
3134 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3135 lockdep_is_held(&local->chanctx_mtx));
3136 if (!conf) {
3137 err = -EBUSY;
3138 goto out;
3139 }
3140
3141 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3142
3143 ch_switch.timestamp = 0;
3144 ch_switch.device_timestamp = 0;
3145 ch_switch.block_tx = params->block_tx;
3146 ch_switch.chandef = params->chandef;
3147 ch_switch.count = params->count;
3148
3149 err = drv_pre_channel_switch(sdata, &ch_switch);
3150 if (err)
3151 goto out;
3152
3153 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef,
3154 chanctx->mode,
3155 params->radar_required);
3156 if (err)
3157 goto out;
3158
3159 /* if reservation is invalid then this will fail */
3160 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3161 if (err) {
3162 ieee80211_vif_unreserve_chanctx(sdata);
3163 goto out;
3164 }
3165
3166 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3167 if (err) {
3168 ieee80211_vif_unreserve_chanctx(sdata);
3169 goto out;
3170 }
3171
3172 sdata->csa_chandef = params->chandef;
3173 sdata->csa_block_tx = params->block_tx;
3174 sdata->vif.csa_active = true;
3175
3176 if (sdata->csa_block_tx)
3177 ieee80211_stop_vif_queues(local, sdata,
3178 IEEE80211_QUEUE_STOP_REASON_CSA);
3179
3180 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3181 params->count);
3182
3183 if (changed) {
3184 ieee80211_bss_info_change_notify(sdata, changed);
3185 drv_channel_switch_beacon(sdata, ¶ms->chandef);
3186 } else {
3187 /* if the beacon didn't change, we can finalize immediately */
3188 ieee80211_csa_finalize(sdata);
3189 }
3190
3191 out:
3192 mutex_unlock(&local->chanctx_mtx);
3193 return err;
3194 }
3195
ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)3196 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3197 struct cfg80211_csa_settings *params)
3198 {
3199 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3200 struct ieee80211_local *local = sdata->local;
3201 int err;
3202
3203 mutex_lock(&local->mtx);
3204 err = __ieee80211_channel_switch(wiphy, dev, params);
3205 mutex_unlock(&local->mtx);
3206
3207 return err;
3208 }
3209
ieee80211_mgmt_tx_cookie(struct ieee80211_local * local)3210 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3211 {
3212 lockdep_assert_held(&local->mtx);
3213
3214 local->roc_cookie_counter++;
3215
3216 /* wow, you wrapped 64 bits ... more likely a bug */
3217 if (WARN_ON(local->roc_cookie_counter == 0))
3218 local->roc_cookie_counter++;
3219
3220 return local->roc_cookie_counter;
3221 }
3222
ieee80211_attach_ack_skb(struct ieee80211_local * local,struct sk_buff * skb,u64 * cookie,gfp_t gfp)3223 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3224 u64 *cookie, gfp_t gfp)
3225 {
3226 unsigned long spin_flags;
3227 struct sk_buff *ack_skb;
3228 int id;
3229
3230 ack_skb = skb_copy(skb, gfp);
3231 if (!ack_skb)
3232 return -ENOMEM;
3233
3234 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3235 id = idr_alloc(&local->ack_status_frames, ack_skb,
3236 1, 0x10000, GFP_ATOMIC);
3237 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3238
3239 if (id < 0) {
3240 kfree_skb(ack_skb);
3241 return -ENOMEM;
3242 }
3243
3244 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3245
3246 *cookie = ieee80211_mgmt_tx_cookie(local);
3247 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3248
3249 return 0;
3250 }
3251
ieee80211_mgmt_frame_register(struct wiphy * wiphy,struct wireless_dev * wdev,u16 frame_type,bool reg)3252 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3253 struct wireless_dev *wdev,
3254 u16 frame_type, bool reg)
3255 {
3256 struct ieee80211_local *local = wiphy_priv(wiphy);
3257 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3258
3259 switch (frame_type) {
3260 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3261 if (reg) {
3262 local->probe_req_reg++;
3263 sdata->vif.probe_req_reg++;
3264 } else {
3265 if (local->probe_req_reg)
3266 local->probe_req_reg--;
3267
3268 if (sdata->vif.probe_req_reg)
3269 sdata->vif.probe_req_reg--;
3270 }
3271
3272 if (!local->open_count)
3273 break;
3274
3275 if (sdata->vif.probe_req_reg == 1)
3276 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3277 FIF_PROBE_REQ);
3278 else if (sdata->vif.probe_req_reg == 0)
3279 drv_config_iface_filter(local, sdata, 0,
3280 FIF_PROBE_REQ);
3281
3282 ieee80211_configure_filter(local);
3283 break;
3284 default:
3285 break;
3286 }
3287 }
3288
ieee80211_set_antenna(struct wiphy * wiphy,u32 tx_ant,u32 rx_ant)3289 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3290 {
3291 struct ieee80211_local *local = wiphy_priv(wiphy);
3292
3293 if (local->started)
3294 return -EOPNOTSUPP;
3295
3296 return drv_set_antenna(local, tx_ant, rx_ant);
3297 }
3298
ieee80211_get_antenna(struct wiphy * wiphy,u32 * tx_ant,u32 * rx_ant)3299 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3300 {
3301 struct ieee80211_local *local = wiphy_priv(wiphy);
3302
3303 return drv_get_antenna(local, tx_ant, rx_ant);
3304 }
3305
ieee80211_set_rekey_data(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_gtk_rekey_data * data)3306 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3307 struct net_device *dev,
3308 struct cfg80211_gtk_rekey_data *data)
3309 {
3310 struct ieee80211_local *local = wiphy_priv(wiphy);
3311 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3312
3313 if (!local->ops->set_rekey_data)
3314 return -EOPNOTSUPP;
3315
3316 drv_set_rekey_data(local, sdata, data);
3317
3318 return 0;
3319 }
3320
ieee80211_probe_client(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u64 * cookie)3321 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3322 const u8 *peer, u64 *cookie)
3323 {
3324 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3325 struct ieee80211_local *local = sdata->local;
3326 struct ieee80211_qos_hdr *nullfunc;
3327 struct sk_buff *skb;
3328 int size = sizeof(*nullfunc);
3329 __le16 fc;
3330 bool qos;
3331 struct ieee80211_tx_info *info;
3332 struct sta_info *sta;
3333 struct ieee80211_chanctx_conf *chanctx_conf;
3334 enum nl80211_band band;
3335 int ret;
3336
3337 /* the lock is needed to assign the cookie later */
3338 mutex_lock(&local->mtx);
3339
3340 rcu_read_lock();
3341 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3342 if (WARN_ON(!chanctx_conf)) {
3343 ret = -EINVAL;
3344 goto unlock;
3345 }
3346 band = chanctx_conf->def.chan->band;
3347 sta = sta_info_get_bss(sdata, peer);
3348 if (sta) {
3349 qos = sta->sta.wme;
3350 } else {
3351 ret = -ENOLINK;
3352 goto unlock;
3353 }
3354
3355 if (qos) {
3356 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3357 IEEE80211_STYPE_QOS_NULLFUNC |
3358 IEEE80211_FCTL_FROMDS);
3359 } else {
3360 size -= 2;
3361 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3362 IEEE80211_STYPE_NULLFUNC |
3363 IEEE80211_FCTL_FROMDS);
3364 }
3365
3366 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3367 if (!skb) {
3368 ret = -ENOMEM;
3369 goto unlock;
3370 }
3371
3372 skb->dev = dev;
3373
3374 skb_reserve(skb, local->hw.extra_tx_headroom);
3375
3376 nullfunc = (void *) skb_put(skb, size);
3377 nullfunc->frame_control = fc;
3378 nullfunc->duration_id = 0;
3379 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3380 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3381 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3382 nullfunc->seq_ctrl = 0;
3383
3384 info = IEEE80211_SKB_CB(skb);
3385
3386 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3387 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3388 info->band = band;
3389
3390 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3391 skb->priority = 7;
3392 if (qos)
3393 nullfunc->qos_ctrl = cpu_to_le16(7);
3394
3395 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3396 if (ret) {
3397 kfree_skb(skb);
3398 goto unlock;
3399 }
3400
3401 local_bh_disable();
3402 ieee80211_xmit(sdata, sta, skb);
3403 local_bh_enable();
3404
3405 ret = 0;
3406 unlock:
3407 rcu_read_unlock();
3408 mutex_unlock(&local->mtx);
3409
3410 return ret;
3411 }
3412
ieee80211_cfg_get_channel(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_chan_def * chandef)3413 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3414 struct wireless_dev *wdev,
3415 struct cfg80211_chan_def *chandef)
3416 {
3417 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3418 struct ieee80211_local *local = wiphy_priv(wiphy);
3419 struct ieee80211_chanctx_conf *chanctx_conf;
3420 int ret = -ENODATA;
3421
3422 rcu_read_lock();
3423 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3424 if (chanctx_conf) {
3425 *chandef = sdata->vif.bss_conf.chandef;
3426 ret = 0;
3427 } else if (local->open_count > 0 &&
3428 local->open_count == local->monitors &&
3429 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3430 if (local->use_chanctx)
3431 *chandef = local->monitor_chandef;
3432 else
3433 *chandef = local->_oper_chandef;
3434 ret = 0;
3435 }
3436 rcu_read_unlock();
3437
3438 return ret;
3439 }
3440
3441 #ifdef CONFIG_PM
ieee80211_set_wakeup(struct wiphy * wiphy,bool enabled)3442 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3443 {
3444 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3445 }
3446 #endif
3447
ieee80211_set_qos_map(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_qos_map * qos_map)3448 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3449 struct net_device *dev,
3450 struct cfg80211_qos_map *qos_map)
3451 {
3452 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3453 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3454
3455 if (qos_map) {
3456 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3457 if (!new_qos_map)
3458 return -ENOMEM;
3459 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3460 } else {
3461 /* A NULL qos_map was passed to disable QoS mapping */
3462 new_qos_map = NULL;
3463 }
3464
3465 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3466 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3467 if (old_qos_map)
3468 kfree_rcu(old_qos_map, rcu_head);
3469
3470 return 0;
3471 }
3472
ieee80211_set_ap_chanwidth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_chan_def * chandef)3473 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3474 struct net_device *dev,
3475 struct cfg80211_chan_def *chandef)
3476 {
3477 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3478 int ret;
3479 u32 changed = 0;
3480
3481 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3482 if (ret == 0)
3483 ieee80211_bss_info_change_notify(sdata, changed);
3484
3485 return ret;
3486 }
3487
ieee80211_add_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer,u8 up,u16 admitted_time)3488 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3489 u8 tsid, const u8 *peer, u8 up,
3490 u16 admitted_time)
3491 {
3492 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3493 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3494 int ac = ieee802_1d_to_ac[up];
3495
3496 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3497 return -EOPNOTSUPP;
3498
3499 if (!(sdata->wmm_acm & BIT(up)))
3500 return -EINVAL;
3501
3502 if (ifmgd->tx_tspec[ac].admitted_time)
3503 return -EBUSY;
3504
3505 if (admitted_time) {
3506 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3507 ifmgd->tx_tspec[ac].tsid = tsid;
3508 ifmgd->tx_tspec[ac].up = up;
3509 }
3510
3511 return 0;
3512 }
3513
ieee80211_del_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer)3514 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3515 u8 tsid, const u8 *peer)
3516 {
3517 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3518 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3519 struct ieee80211_local *local = wiphy_priv(wiphy);
3520 int ac;
3521
3522 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3523 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3524
3525 /* skip unused entries */
3526 if (!tx_tspec->admitted_time)
3527 continue;
3528
3529 if (tx_tspec->tsid != tsid)
3530 continue;
3531
3532 /* due to this new packets will be reassigned to non-ACM ACs */
3533 tx_tspec->up = -1;
3534
3535 /* Make sure that all packets have been sent to avoid to
3536 * restore the QoS params on packets that are still on the
3537 * queues.
3538 */
3539 synchronize_net();
3540 ieee80211_flush_queues(local, sdata, false);
3541
3542 /* restore the normal QoS parameters
3543 * (unconditionally to avoid races)
3544 */
3545 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3546 tx_tspec->downgraded = false;
3547 ieee80211_sta_handle_tspec_ac_params(sdata);
3548
3549 /* finally clear all the data */
3550 memset(tx_tspec, 0, sizeof(*tx_tspec));
3551
3552 return 0;
3553 }
3554
3555 return -ENOENT;
3556 }
3557
ieee80211_nan_func_terminated(struct ieee80211_vif * vif,u8 inst_id,enum nl80211_nan_func_term_reason reason,gfp_t gfp)3558 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3559 u8 inst_id,
3560 enum nl80211_nan_func_term_reason reason,
3561 gfp_t gfp)
3562 {
3563 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3564 struct cfg80211_nan_func *func;
3565 u64 cookie;
3566
3567 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3568 return;
3569
3570 spin_lock_bh(&sdata->u.nan.func_lock);
3571
3572 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3573 if (WARN_ON(!func)) {
3574 spin_unlock_bh(&sdata->u.nan.func_lock);
3575 return;
3576 }
3577
3578 cookie = func->cookie;
3579 idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3580
3581 spin_unlock_bh(&sdata->u.nan.func_lock);
3582
3583 cfg80211_free_nan_func(func);
3584
3585 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3586 reason, cookie, gfp);
3587 }
3588 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3589
ieee80211_nan_func_match(struct ieee80211_vif * vif,struct cfg80211_nan_match_params * match,gfp_t gfp)3590 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3591 struct cfg80211_nan_match_params *match,
3592 gfp_t gfp)
3593 {
3594 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3595 struct cfg80211_nan_func *func;
3596
3597 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3598 return;
3599
3600 spin_lock_bh(&sdata->u.nan.func_lock);
3601
3602 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id);
3603 if (WARN_ON(!func)) {
3604 spin_unlock_bh(&sdata->u.nan.func_lock);
3605 return;
3606 }
3607 match->cookie = func->cookie;
3608
3609 spin_unlock_bh(&sdata->u.nan.func_lock);
3610
3611 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3612 }
3613 EXPORT_SYMBOL(ieee80211_nan_func_match);
3614
3615 const struct cfg80211_ops mac80211_config_ops = {
3616 .add_virtual_intf = ieee80211_add_iface,
3617 .del_virtual_intf = ieee80211_del_iface,
3618 .change_virtual_intf = ieee80211_change_iface,
3619 .start_p2p_device = ieee80211_start_p2p_device,
3620 .stop_p2p_device = ieee80211_stop_p2p_device,
3621 .add_key = ieee80211_add_key,
3622 .del_key = ieee80211_del_key,
3623 .get_key = ieee80211_get_key,
3624 .set_default_key = ieee80211_config_default_key,
3625 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3626 .start_ap = ieee80211_start_ap,
3627 .change_beacon = ieee80211_change_beacon,
3628 .stop_ap = ieee80211_stop_ap,
3629 .add_station = ieee80211_add_station,
3630 .del_station = ieee80211_del_station,
3631 .change_station = ieee80211_change_station,
3632 .get_station = ieee80211_get_station,
3633 .dump_station = ieee80211_dump_station,
3634 .dump_survey = ieee80211_dump_survey,
3635 #ifdef CONFIG_MAC80211_MESH
3636 .add_mpath = ieee80211_add_mpath,
3637 .del_mpath = ieee80211_del_mpath,
3638 .change_mpath = ieee80211_change_mpath,
3639 .get_mpath = ieee80211_get_mpath,
3640 .dump_mpath = ieee80211_dump_mpath,
3641 .get_mpp = ieee80211_get_mpp,
3642 .dump_mpp = ieee80211_dump_mpp,
3643 .update_mesh_config = ieee80211_update_mesh_config,
3644 .get_mesh_config = ieee80211_get_mesh_config,
3645 .join_mesh = ieee80211_join_mesh,
3646 .leave_mesh = ieee80211_leave_mesh,
3647 #endif
3648 .join_ocb = ieee80211_join_ocb,
3649 .leave_ocb = ieee80211_leave_ocb,
3650 .change_bss = ieee80211_change_bss,
3651 .set_txq_params = ieee80211_set_txq_params,
3652 .set_monitor_channel = ieee80211_set_monitor_channel,
3653 .suspend = ieee80211_suspend,
3654 .resume = ieee80211_resume,
3655 .scan = ieee80211_scan,
3656 .abort_scan = ieee80211_abort_scan,
3657 .sched_scan_start = ieee80211_sched_scan_start,
3658 .sched_scan_stop = ieee80211_sched_scan_stop,
3659 .auth = ieee80211_auth,
3660 .assoc = ieee80211_assoc,
3661 .deauth = ieee80211_deauth,
3662 .disassoc = ieee80211_disassoc,
3663 .join_ibss = ieee80211_join_ibss,
3664 .leave_ibss = ieee80211_leave_ibss,
3665 .set_mcast_rate = ieee80211_set_mcast_rate,
3666 .set_wiphy_params = ieee80211_set_wiphy_params,
3667 .set_tx_power = ieee80211_set_tx_power,
3668 .get_tx_power = ieee80211_get_tx_power,
3669 .set_wds_peer = ieee80211_set_wds_peer,
3670 .rfkill_poll = ieee80211_rfkill_poll,
3671 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3672 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3673 .set_power_mgmt = ieee80211_set_power_mgmt,
3674 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3675 .remain_on_channel = ieee80211_remain_on_channel,
3676 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3677 .mgmt_tx = ieee80211_mgmt_tx,
3678 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3679 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3680 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3681 .set_antenna = ieee80211_set_antenna,
3682 .get_antenna = ieee80211_get_antenna,
3683 .set_rekey_data = ieee80211_set_rekey_data,
3684 .tdls_oper = ieee80211_tdls_oper,
3685 .tdls_mgmt = ieee80211_tdls_mgmt,
3686 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3687 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3688 .probe_client = ieee80211_probe_client,
3689 .set_noack_map = ieee80211_set_noack_map,
3690 #ifdef CONFIG_PM
3691 .set_wakeup = ieee80211_set_wakeup,
3692 #endif
3693 .get_channel = ieee80211_cfg_get_channel,
3694 .start_radar_detection = ieee80211_start_radar_detection,
3695 .channel_switch = ieee80211_channel_switch,
3696 .set_qos_map = ieee80211_set_qos_map,
3697 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3698 .add_tx_ts = ieee80211_add_tx_ts,
3699 .del_tx_ts = ieee80211_del_tx_ts,
3700 .start_nan = ieee80211_start_nan,
3701 .stop_nan = ieee80211_stop_nan,
3702 .nan_change_conf = ieee80211_nan_change_conf,
3703 .add_nan_func = ieee80211_add_nan_func,
3704 .del_nan_func = ieee80211_del_nan_func,
3705 };
3706