1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * mac80211 configuration hooks for cfg80211
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2015 Intel Mobile Communications GmbH
7 * Copyright (C) 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2022 Intel Corporation
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/fips.h>
18 #include <linux/if_ether.h>
19 #include <net/cfg80211.h>
20 #include "ieee80211_i.h"
21 #include "driver-ops.h"
22 #include "rate.h"
23 #include "mesh.h"
24 #include "wme.h"
25
26 static struct ieee80211_link_data *
ieee80211_link_or_deflink(struct ieee80211_sub_if_data * sdata,int link_id,bool require_valid)27 ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id,
28 bool require_valid)
29 {
30 struct ieee80211_link_data *link;
31
32 if (link_id < 0) {
33 /*
34 * For keys, if sdata is not an MLD, we might not use
35 * the return value at all (if it's not a pairwise key),
36 * so in that case (require_valid==false) don't error.
37 */
38 if (require_valid && sdata->vif.valid_links)
39 return ERR_PTR(-EINVAL);
40
41 return &sdata->deflink;
42 }
43
44 link = sdata_dereference(sdata->link[link_id], sdata);
45 if (!link)
46 return ERR_PTR(-ENOLINK);
47 return link;
48 }
49
ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data * sdata,struct vif_params * params)50 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
51 struct vif_params *params)
52 {
53 bool mu_mimo_groups = false;
54 bool mu_mimo_follow = false;
55
56 if (params->vht_mumimo_groups) {
57 u64 membership;
58
59 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
60
61 memcpy(sdata->vif.bss_conf.mu_group.membership,
62 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
63 memcpy(sdata->vif.bss_conf.mu_group.position,
64 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
65 WLAN_USER_POSITION_LEN);
66 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
67 BSS_CHANGED_MU_GROUPS);
68 /* don't care about endianness - just check for 0 */
69 memcpy(&membership, params->vht_mumimo_groups,
70 WLAN_MEMBERSHIP_LEN);
71 mu_mimo_groups = membership != 0;
72 }
73
74 if (params->vht_mumimo_follow_addr) {
75 mu_mimo_follow =
76 is_valid_ether_addr(params->vht_mumimo_follow_addr);
77 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
78 params->vht_mumimo_follow_addr);
79 }
80
81 sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
82 }
83
ieee80211_set_mon_options(struct ieee80211_sub_if_data * sdata,struct vif_params * params)84 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
85 struct vif_params *params)
86 {
87 struct ieee80211_local *local = sdata->local;
88 struct ieee80211_sub_if_data *monitor_sdata;
89
90 /* check flags first */
91 if (params->flags && ieee80211_sdata_running(sdata)) {
92 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
93
94 /*
95 * Prohibit MONITOR_FLAG_COOK_FRAMES and
96 * MONITOR_FLAG_ACTIVE to be changed while the
97 * interface is up.
98 * Else we would need to add a lot of cruft
99 * to update everything:
100 * cooked_mntrs, monitor and all fif_* counters
101 * reconfigure hardware
102 */
103 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
104 return -EBUSY;
105 }
106
107 /* also validate MU-MIMO change */
108 monitor_sdata = wiphy_dereference(local->hw.wiphy,
109 local->monitor_sdata);
110
111 if (!monitor_sdata &&
112 (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
113 return -EOPNOTSUPP;
114
115 /* apply all changes now - no failures allowed */
116
117 if (monitor_sdata)
118 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
119
120 if (params->flags) {
121 if (ieee80211_sdata_running(sdata)) {
122 ieee80211_adjust_monitor_flags(sdata, -1);
123 sdata->u.mntr.flags = params->flags;
124 ieee80211_adjust_monitor_flags(sdata, 1);
125
126 ieee80211_configure_filter(local);
127 } else {
128 /*
129 * Because the interface is down, ieee80211_do_stop
130 * and ieee80211_do_open take care of "everything"
131 * mentioned in the comment above.
132 */
133 sdata->u.mntr.flags = params->flags;
134 }
135 }
136
137 return 0;
138 }
139
ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data * sdata,struct cfg80211_mbssid_config params,struct ieee80211_bss_conf * link_conf)140 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
141 struct cfg80211_mbssid_config params,
142 struct ieee80211_bss_conf *link_conf)
143 {
144 struct ieee80211_sub_if_data *tx_sdata;
145
146 sdata->vif.mbssid_tx_vif = NULL;
147 link_conf->bssid_index = 0;
148 link_conf->nontransmitted = false;
149 link_conf->ema_ap = false;
150 link_conf->bssid_indicator = 0;
151
152 if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
153 return -EINVAL;
154
155 tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
156 if (!tx_sdata)
157 return -EINVAL;
158
159 if (tx_sdata == sdata) {
160 sdata->vif.mbssid_tx_vif = &sdata->vif;
161 } else {
162 sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
163 link_conf->nontransmitted = true;
164 link_conf->bssid_index = params.index;
165 }
166 if (params.ema)
167 link_conf->ema_ap = true;
168
169 return 0;
170 }
171
ieee80211_add_iface(struct wiphy * wiphy,const char * name,unsigned char name_assign_type,enum nl80211_iftype type,struct vif_params * params)172 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
173 const char *name,
174 unsigned char name_assign_type,
175 enum nl80211_iftype type,
176 struct vif_params *params)
177 {
178 struct ieee80211_local *local = wiphy_priv(wiphy);
179 struct wireless_dev *wdev;
180 struct ieee80211_sub_if_data *sdata;
181 int err;
182
183 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
184 if (err)
185 return ERR_PTR(err);
186
187 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
188
189 if (type == NL80211_IFTYPE_MONITOR) {
190 err = ieee80211_set_mon_options(sdata, params);
191 if (err) {
192 ieee80211_if_remove(sdata);
193 return NULL;
194 }
195 }
196
197 return wdev;
198 }
199
ieee80211_del_iface(struct wiphy * wiphy,struct wireless_dev * wdev)200 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
201 {
202 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
203
204 return 0;
205 }
206
ieee80211_change_iface(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)207 static int ieee80211_change_iface(struct wiphy *wiphy,
208 struct net_device *dev,
209 enum nl80211_iftype type,
210 struct vif_params *params)
211 {
212 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
213 struct ieee80211_local *local = sdata->local;
214 struct sta_info *sta;
215 int ret;
216
217 ret = ieee80211_if_change_type(sdata, type);
218 if (ret)
219 return ret;
220
221 if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
222 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
223 ieee80211_check_fast_rx_iface(sdata);
224 } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
225 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
226
227 if (params->use_4addr == ifmgd->use_4addr)
228 return 0;
229
230 /* FIXME: no support for 4-addr MLO yet */
231 if (sdata->vif.valid_links)
232 return -EOPNOTSUPP;
233
234 sdata->u.mgd.use_4addr = params->use_4addr;
235 if (!ifmgd->associated)
236 return 0;
237
238 mutex_lock(&local->sta_mtx);
239 sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
240 if (sta)
241 drv_sta_set_4addr(local, sdata, &sta->sta,
242 params->use_4addr);
243 mutex_unlock(&local->sta_mtx);
244
245 if (params->use_4addr)
246 ieee80211_send_4addr_nullfunc(local, sdata);
247 }
248
249 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
250 ret = ieee80211_set_mon_options(sdata, params);
251 if (ret)
252 return ret;
253 }
254
255 return 0;
256 }
257
ieee80211_start_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)258 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
259 struct wireless_dev *wdev)
260 {
261 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
262 int ret;
263
264 mutex_lock(&sdata->local->chanctx_mtx);
265 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
266 mutex_unlock(&sdata->local->chanctx_mtx);
267 if (ret < 0)
268 return ret;
269
270 return ieee80211_do_open(wdev, true);
271 }
272
ieee80211_stop_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)273 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
274 struct wireless_dev *wdev)
275 {
276 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
277 }
278
ieee80211_start_nan(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf)279 static int ieee80211_start_nan(struct wiphy *wiphy,
280 struct wireless_dev *wdev,
281 struct cfg80211_nan_conf *conf)
282 {
283 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
284 int ret;
285
286 mutex_lock(&sdata->local->chanctx_mtx);
287 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
288 mutex_unlock(&sdata->local->chanctx_mtx);
289 if (ret < 0)
290 return ret;
291
292 ret = ieee80211_do_open(wdev, true);
293 if (ret)
294 return ret;
295
296 ret = drv_start_nan(sdata->local, sdata, conf);
297 if (ret)
298 ieee80211_sdata_stop(sdata);
299
300 sdata->u.nan.conf = *conf;
301
302 return ret;
303 }
304
ieee80211_stop_nan(struct wiphy * wiphy,struct wireless_dev * wdev)305 static void ieee80211_stop_nan(struct wiphy *wiphy,
306 struct wireless_dev *wdev)
307 {
308 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
309
310 drv_stop_nan(sdata->local, sdata);
311 ieee80211_sdata_stop(sdata);
312 }
313
ieee80211_nan_change_conf(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf,u32 changes)314 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
315 struct wireless_dev *wdev,
316 struct cfg80211_nan_conf *conf,
317 u32 changes)
318 {
319 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
320 struct cfg80211_nan_conf new_conf;
321 int ret = 0;
322
323 if (sdata->vif.type != NL80211_IFTYPE_NAN)
324 return -EOPNOTSUPP;
325
326 if (!ieee80211_sdata_running(sdata))
327 return -ENETDOWN;
328
329 new_conf = sdata->u.nan.conf;
330
331 if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
332 new_conf.master_pref = conf->master_pref;
333
334 if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
335 new_conf.bands = conf->bands;
336
337 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
338 if (!ret)
339 sdata->u.nan.conf = new_conf;
340
341 return ret;
342 }
343
ieee80211_add_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_func * nan_func)344 static int ieee80211_add_nan_func(struct wiphy *wiphy,
345 struct wireless_dev *wdev,
346 struct cfg80211_nan_func *nan_func)
347 {
348 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
349 int ret;
350
351 if (sdata->vif.type != NL80211_IFTYPE_NAN)
352 return -EOPNOTSUPP;
353
354 if (!ieee80211_sdata_running(sdata))
355 return -ENETDOWN;
356
357 spin_lock_bh(&sdata->u.nan.func_lock);
358
359 ret = idr_alloc(&sdata->u.nan.function_inst_ids,
360 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
361 GFP_ATOMIC);
362 spin_unlock_bh(&sdata->u.nan.func_lock);
363
364 if (ret < 0)
365 return ret;
366
367 nan_func->instance_id = ret;
368
369 WARN_ON(nan_func->instance_id == 0);
370
371 ret = drv_add_nan_func(sdata->local, sdata, nan_func);
372 if (ret) {
373 spin_lock_bh(&sdata->u.nan.func_lock);
374 idr_remove(&sdata->u.nan.function_inst_ids,
375 nan_func->instance_id);
376 spin_unlock_bh(&sdata->u.nan.func_lock);
377 }
378
379 return ret;
380 }
381
382 static struct cfg80211_nan_func *
ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data * sdata,u64 cookie)383 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
384 u64 cookie)
385 {
386 struct cfg80211_nan_func *func;
387 int id;
388
389 lockdep_assert_held(&sdata->u.nan.func_lock);
390
391 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
392 if (func->cookie == cookie)
393 return func;
394 }
395
396 return NULL;
397 }
398
ieee80211_del_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,u64 cookie)399 static void ieee80211_del_nan_func(struct wiphy *wiphy,
400 struct wireless_dev *wdev, u64 cookie)
401 {
402 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
403 struct cfg80211_nan_func *func;
404 u8 instance_id = 0;
405
406 if (sdata->vif.type != NL80211_IFTYPE_NAN ||
407 !ieee80211_sdata_running(sdata))
408 return;
409
410 spin_lock_bh(&sdata->u.nan.func_lock);
411
412 func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
413 if (func)
414 instance_id = func->instance_id;
415
416 spin_unlock_bh(&sdata->u.nan.func_lock);
417
418 if (instance_id)
419 drv_del_nan_func(sdata->local, sdata, instance_id);
420 }
421
ieee80211_set_noack_map(struct wiphy * wiphy,struct net_device * dev,u16 noack_map)422 static int ieee80211_set_noack_map(struct wiphy *wiphy,
423 struct net_device *dev,
424 u16 noack_map)
425 {
426 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
427
428 sdata->noack_map = noack_map;
429
430 ieee80211_check_fast_xmit_iface(sdata);
431
432 return 0;
433 }
434
ieee80211_set_tx(struct ieee80211_sub_if_data * sdata,const u8 * mac_addr,u8 key_idx)435 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
436 const u8 *mac_addr, u8 key_idx)
437 {
438 struct ieee80211_local *local = sdata->local;
439 struct ieee80211_key *key;
440 struct sta_info *sta;
441 int ret = -EINVAL;
442
443 if (!wiphy_ext_feature_isset(local->hw.wiphy,
444 NL80211_EXT_FEATURE_EXT_KEY_ID))
445 return -EINVAL;
446
447 sta = sta_info_get_bss(sdata, mac_addr);
448
449 if (!sta)
450 return -EINVAL;
451
452 if (sta->ptk_idx == key_idx)
453 return 0;
454
455 mutex_lock(&local->key_mtx);
456 key = key_mtx_dereference(local, sta->ptk[key_idx]);
457
458 if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
459 ret = ieee80211_set_tx_key(key);
460
461 mutex_unlock(&local->key_mtx);
462 return ret;
463 }
464
ieee80211_add_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr,struct key_params * params)465 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
466 int link_id, u8 key_idx, bool pairwise,
467 const u8 *mac_addr, struct key_params *params)
468 {
469 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
470 struct ieee80211_link_data *link =
471 ieee80211_link_or_deflink(sdata, link_id, false);
472 struct ieee80211_local *local = sdata->local;
473 struct sta_info *sta = NULL;
474 struct ieee80211_key *key;
475 int err;
476
477 if (!ieee80211_sdata_running(sdata))
478 return -ENETDOWN;
479
480 if (IS_ERR(link))
481 return PTR_ERR(link);
482
483 if (pairwise && params->mode == NL80211_KEY_SET_TX)
484 return ieee80211_set_tx(sdata, mac_addr, key_idx);
485
486 /* reject WEP and TKIP keys if WEP failed to initialize */
487 switch (params->cipher) {
488 case WLAN_CIPHER_SUITE_WEP40:
489 case WLAN_CIPHER_SUITE_TKIP:
490 case WLAN_CIPHER_SUITE_WEP104:
491 if (link_id >= 0)
492 return -EINVAL;
493 if (WARN_ON_ONCE(fips_enabled))
494 return -EINVAL;
495 break;
496 default:
497 break;
498 }
499
500 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
501 params->key, params->seq_len, params->seq);
502 if (IS_ERR(key))
503 return PTR_ERR(key);
504
505 key->conf.link_id = link_id;
506
507 if (pairwise)
508 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
509
510 if (params->mode == NL80211_KEY_NO_TX)
511 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
512
513 mutex_lock(&local->sta_mtx);
514
515 if (mac_addr) {
516 sta = sta_info_get_bss(sdata, mac_addr);
517 /*
518 * The ASSOC test makes sure the driver is ready to
519 * receive the key. When wpa_supplicant has roamed
520 * using FT, it attempts to set the key before
521 * association has completed, this rejects that attempt
522 * so it will set the key again after association.
523 *
524 * TODO: accept the key if we have a station entry and
525 * add it to the device after the station.
526 */
527 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
528 ieee80211_key_free_unused(key);
529 err = -ENOENT;
530 goto out_unlock;
531 }
532 }
533
534 switch (sdata->vif.type) {
535 case NL80211_IFTYPE_STATION:
536 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
537 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
538 break;
539 case NL80211_IFTYPE_AP:
540 case NL80211_IFTYPE_AP_VLAN:
541 /* Keys without a station are used for TX only */
542 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
543 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
544 break;
545 case NL80211_IFTYPE_ADHOC:
546 /* no MFP (yet) */
547 break;
548 case NL80211_IFTYPE_MESH_POINT:
549 #ifdef CONFIG_MAC80211_MESH
550 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
551 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
552 break;
553 #endif
554 case NL80211_IFTYPE_WDS:
555 case NL80211_IFTYPE_MONITOR:
556 case NL80211_IFTYPE_P2P_DEVICE:
557 case NL80211_IFTYPE_NAN:
558 case NL80211_IFTYPE_UNSPECIFIED:
559 case NUM_NL80211_IFTYPES:
560 case NL80211_IFTYPE_P2P_CLIENT:
561 case NL80211_IFTYPE_P2P_GO:
562 case NL80211_IFTYPE_OCB:
563 /* shouldn't happen */
564 WARN_ON_ONCE(1);
565 break;
566 }
567
568 err = ieee80211_key_link(key, link, sta);
569
570 out_unlock:
571 mutex_unlock(&local->sta_mtx);
572
573 return err;
574 }
575
576 static struct ieee80211_key *
ieee80211_lookup_key(struct ieee80211_sub_if_data * sdata,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr)577 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
578 u8 key_idx, bool pairwise, const u8 *mac_addr)
579 {
580 struct ieee80211_local *local __maybe_unused = sdata->local;
581 struct ieee80211_link_data *link = &sdata->deflink;
582 struct ieee80211_key *key;
583
584 if (link_id >= 0) {
585 link = rcu_dereference_check(sdata->link[link_id],
586 lockdep_is_held(&sdata->wdev.mtx));
587 if (!link)
588 return NULL;
589 }
590
591 if (mac_addr) {
592 struct sta_info *sta;
593 struct link_sta_info *link_sta;
594
595 sta = sta_info_get_bss(sdata, mac_addr);
596 if (!sta)
597 return NULL;
598
599 if (link_id >= 0) {
600 link_sta = rcu_dereference_check(sta->link[link_id],
601 lockdep_is_held(&local->sta_mtx));
602 if (!link_sta)
603 return NULL;
604 } else {
605 link_sta = &sta->deflink;
606 }
607
608 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
609 return rcu_dereference_check_key_mtx(local,
610 sta->ptk[key_idx]);
611
612 if (!pairwise &&
613 key_idx < NUM_DEFAULT_KEYS +
614 NUM_DEFAULT_MGMT_KEYS +
615 NUM_DEFAULT_BEACON_KEYS)
616 return rcu_dereference_check_key_mtx(local,
617 link_sta->gtk[key_idx]);
618
619 return NULL;
620 }
621
622 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
623 return rcu_dereference_check_key_mtx(local,
624 sdata->keys[key_idx]);
625
626 key = rcu_dereference_check_key_mtx(local, link->gtk[key_idx]);
627 if (key)
628 return key;
629
630 /* or maybe it was a WEP key */
631 if (key_idx < NUM_DEFAULT_KEYS)
632 return rcu_dereference_check_key_mtx(local, sdata->keys[key_idx]);
633
634 return NULL;
635 }
636
ieee80211_del_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr)637 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
638 int link_id, u8 key_idx, bool pairwise,
639 const u8 *mac_addr)
640 {
641 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
642 struct ieee80211_local *local = sdata->local;
643 struct ieee80211_key *key;
644 int ret;
645
646 mutex_lock(&local->sta_mtx);
647 mutex_lock(&local->key_mtx);
648
649 key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
650 if (!key) {
651 ret = -ENOENT;
652 goto out_unlock;
653 }
654
655 ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
656
657 ret = 0;
658 out_unlock:
659 mutex_unlock(&local->key_mtx);
660 mutex_unlock(&local->sta_mtx);
661
662 return ret;
663 }
664
ieee80211_get_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr,void * cookie,void (* callback)(void * cookie,struct key_params * params))665 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
666 int link_id, u8 key_idx, bool pairwise,
667 const u8 *mac_addr, void *cookie,
668 void (*callback)(void *cookie,
669 struct key_params *params))
670 {
671 struct ieee80211_sub_if_data *sdata;
672 u8 seq[6] = {0};
673 struct key_params params;
674 struct ieee80211_key *key;
675 u64 pn64;
676 u32 iv32;
677 u16 iv16;
678 int err = -ENOENT;
679 struct ieee80211_key_seq kseq = {};
680
681 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
682
683 rcu_read_lock();
684
685 key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
686 if (!key)
687 goto out;
688
689 memset(¶ms, 0, sizeof(params));
690
691 params.cipher = key->conf.cipher;
692
693 switch (key->conf.cipher) {
694 case WLAN_CIPHER_SUITE_TKIP:
695 pn64 = atomic64_read(&key->conf.tx_pn);
696 iv32 = TKIP_PN_TO_IV32(pn64);
697 iv16 = TKIP_PN_TO_IV16(pn64);
698
699 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
700 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
701 drv_get_key_seq(sdata->local, key, &kseq);
702 iv32 = kseq.tkip.iv32;
703 iv16 = kseq.tkip.iv16;
704 }
705
706 seq[0] = iv16 & 0xff;
707 seq[1] = (iv16 >> 8) & 0xff;
708 seq[2] = iv32 & 0xff;
709 seq[3] = (iv32 >> 8) & 0xff;
710 seq[4] = (iv32 >> 16) & 0xff;
711 seq[5] = (iv32 >> 24) & 0xff;
712 params.seq = seq;
713 params.seq_len = 6;
714 break;
715 case WLAN_CIPHER_SUITE_CCMP:
716 case WLAN_CIPHER_SUITE_CCMP_256:
717 case WLAN_CIPHER_SUITE_AES_CMAC:
718 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
719 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
720 offsetof(typeof(kseq), aes_cmac));
721 fallthrough;
722 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
723 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
724 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
725 offsetof(typeof(kseq), aes_gmac));
726 fallthrough;
727 case WLAN_CIPHER_SUITE_GCMP:
728 case WLAN_CIPHER_SUITE_GCMP_256:
729 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
730 offsetof(typeof(kseq), gcmp));
731
732 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
733 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
734 drv_get_key_seq(sdata->local, key, &kseq);
735 memcpy(seq, kseq.ccmp.pn, 6);
736 } else {
737 pn64 = atomic64_read(&key->conf.tx_pn);
738 seq[0] = pn64;
739 seq[1] = pn64 >> 8;
740 seq[2] = pn64 >> 16;
741 seq[3] = pn64 >> 24;
742 seq[4] = pn64 >> 32;
743 seq[5] = pn64 >> 40;
744 }
745 params.seq = seq;
746 params.seq_len = 6;
747 break;
748 default:
749 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
750 break;
751 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
752 break;
753 drv_get_key_seq(sdata->local, key, &kseq);
754 params.seq = kseq.hw.seq;
755 params.seq_len = kseq.hw.seq_len;
756 break;
757 }
758
759 params.key = key->conf.key;
760 params.key_len = key->conf.keylen;
761
762 callback(cookie, ¶ms);
763 err = 0;
764
765 out:
766 rcu_read_unlock();
767 return err;
768 }
769
ieee80211_config_default_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool uni,bool multi)770 static int ieee80211_config_default_key(struct wiphy *wiphy,
771 struct net_device *dev,
772 int link_id, u8 key_idx, bool uni,
773 bool multi)
774 {
775 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
776 struct ieee80211_link_data *link =
777 ieee80211_link_or_deflink(sdata, link_id, false);
778
779 if (IS_ERR(link))
780 return PTR_ERR(link);
781
782 ieee80211_set_default_key(link, key_idx, uni, multi);
783
784 return 0;
785 }
786
ieee80211_config_default_mgmt_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx)787 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
788 struct net_device *dev,
789 int link_id, u8 key_idx)
790 {
791 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
792 struct ieee80211_link_data *link =
793 ieee80211_link_or_deflink(sdata, link_id, true);
794
795 if (IS_ERR(link))
796 return PTR_ERR(link);
797
798 ieee80211_set_default_mgmt_key(link, key_idx);
799
800 return 0;
801 }
802
ieee80211_config_default_beacon_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx)803 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
804 struct net_device *dev,
805 int link_id, u8 key_idx)
806 {
807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
808 struct ieee80211_link_data *link =
809 ieee80211_link_or_deflink(sdata, link_id, true);
810
811 if (IS_ERR(link))
812 return PTR_ERR(link);
813
814 ieee80211_set_default_beacon_key(link, key_idx);
815
816 return 0;
817 }
818
sta_set_rate_info_tx(struct sta_info * sta,const struct ieee80211_tx_rate * rate,struct rate_info * rinfo)819 void sta_set_rate_info_tx(struct sta_info *sta,
820 const struct ieee80211_tx_rate *rate,
821 struct rate_info *rinfo)
822 {
823 rinfo->flags = 0;
824 if (rate->flags & IEEE80211_TX_RC_MCS) {
825 rinfo->flags |= RATE_INFO_FLAGS_MCS;
826 rinfo->mcs = rate->idx;
827 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
828 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
829 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
830 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
831 } else {
832 struct ieee80211_supported_band *sband;
833 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
834 u16 brate;
835
836 sband = ieee80211_get_sband(sta->sdata);
837 WARN_ON_ONCE(sband && !sband->bitrates);
838 if (sband && sband->bitrates) {
839 brate = sband->bitrates[rate->idx].bitrate;
840 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
841 }
842 }
843 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
844 rinfo->bw = RATE_INFO_BW_40;
845 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
846 rinfo->bw = RATE_INFO_BW_80;
847 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
848 rinfo->bw = RATE_INFO_BW_160;
849 else
850 rinfo->bw = RATE_INFO_BW_20;
851 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
852 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
853 }
854
ieee80211_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)855 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
856 int idx, u8 *mac, struct station_info *sinfo)
857 {
858 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
859 struct ieee80211_local *local = sdata->local;
860 struct sta_info *sta;
861 int ret = -ENOENT;
862
863 mutex_lock(&local->sta_mtx);
864
865 sta = sta_info_get_by_idx(sdata, idx);
866 if (sta) {
867 ret = 0;
868 memcpy(mac, sta->sta.addr, ETH_ALEN);
869 sta_set_sinfo(sta, sinfo, true);
870 }
871
872 mutex_unlock(&local->sta_mtx);
873
874 return ret;
875 }
876
ieee80211_dump_survey(struct wiphy * wiphy,struct net_device * dev,int idx,struct survey_info * survey)877 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
878 int idx, struct survey_info *survey)
879 {
880 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
881
882 return drv_get_survey(local, idx, survey);
883 }
884
ieee80211_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)885 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
886 const u8 *mac, struct station_info *sinfo)
887 {
888 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
889 struct ieee80211_local *local = sdata->local;
890 struct sta_info *sta;
891 int ret = -ENOENT;
892
893 mutex_lock(&local->sta_mtx);
894
895 sta = sta_info_get_bss(sdata, mac);
896 if (sta) {
897 ret = 0;
898 sta_set_sinfo(sta, sinfo, true);
899 }
900
901 mutex_unlock(&local->sta_mtx);
902
903 return ret;
904 }
905
ieee80211_set_monitor_channel(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)906 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
907 struct cfg80211_chan_def *chandef)
908 {
909 struct ieee80211_local *local = wiphy_priv(wiphy);
910 struct ieee80211_sub_if_data *sdata;
911 int ret = 0;
912
913 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
914 return 0;
915
916 mutex_lock(&local->mtx);
917 if (local->use_chanctx) {
918 sdata = wiphy_dereference(local->hw.wiphy,
919 local->monitor_sdata);
920 if (sdata) {
921 ieee80211_link_release_channel(&sdata->deflink);
922 ret = ieee80211_link_use_channel(&sdata->deflink,
923 chandef,
924 IEEE80211_CHANCTX_EXCLUSIVE);
925 }
926 } else if (local->open_count == local->monitors) {
927 local->_oper_chandef = *chandef;
928 ieee80211_hw_config(local, 0);
929 }
930
931 if (ret == 0)
932 local->monitor_chandef = *chandef;
933 mutex_unlock(&local->mtx);
934
935 return ret;
936 }
937
938 static int
ieee80211_set_probe_resp(struct ieee80211_sub_if_data * sdata,const u8 * resp,size_t resp_len,const struct ieee80211_csa_settings * csa,const struct ieee80211_color_change_settings * cca,struct ieee80211_link_data * link)939 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
940 const u8 *resp, size_t resp_len,
941 const struct ieee80211_csa_settings *csa,
942 const struct ieee80211_color_change_settings *cca,
943 struct ieee80211_link_data *link)
944 {
945 struct probe_resp *new, *old;
946
947 if (!resp || !resp_len)
948 return 1;
949
950 old = sdata_dereference(link->u.ap.probe_resp, sdata);
951
952 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
953 if (!new)
954 return -ENOMEM;
955
956 new->len = resp_len;
957 memcpy(new->data, resp, resp_len);
958
959 if (csa)
960 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
961 csa->n_counter_offsets_presp *
962 sizeof(new->cntdwn_counter_offsets[0]));
963 else if (cca)
964 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
965
966 rcu_assign_pointer(link->u.ap.probe_resp, new);
967 if (old)
968 kfree_rcu(old, rcu_head);
969
970 return 0;
971 }
972
ieee80211_set_fils_discovery(struct ieee80211_sub_if_data * sdata,struct cfg80211_fils_discovery * params,struct ieee80211_link_data * link,struct ieee80211_bss_conf * link_conf)973 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
974 struct cfg80211_fils_discovery *params,
975 struct ieee80211_link_data *link,
976 struct ieee80211_bss_conf *link_conf)
977 {
978 struct fils_discovery_data *new, *old = NULL;
979 struct ieee80211_fils_discovery *fd;
980
981 if (!params->tmpl || !params->tmpl_len)
982 return -EINVAL;
983
984 fd = &link_conf->fils_discovery;
985 fd->min_interval = params->min_interval;
986 fd->max_interval = params->max_interval;
987
988 old = sdata_dereference(link->u.ap.fils_discovery, sdata);
989 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
990 if (!new)
991 return -ENOMEM;
992 new->len = params->tmpl_len;
993 memcpy(new->data, params->tmpl, params->tmpl_len);
994 rcu_assign_pointer(link->u.ap.fils_discovery, new);
995
996 if (old)
997 kfree_rcu(old, rcu_head);
998
999 return 0;
1000 }
1001
1002 static int
ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data * sdata,struct cfg80211_unsol_bcast_probe_resp * params,struct ieee80211_link_data * link,struct ieee80211_bss_conf * link_conf)1003 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
1004 struct cfg80211_unsol_bcast_probe_resp *params,
1005 struct ieee80211_link_data *link,
1006 struct ieee80211_bss_conf *link_conf)
1007 {
1008 struct unsol_bcast_probe_resp_data *new, *old = NULL;
1009
1010 if (!params->tmpl || !params->tmpl_len)
1011 return -EINVAL;
1012
1013 old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1014 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1015 if (!new)
1016 return -ENOMEM;
1017 new->len = params->tmpl_len;
1018 memcpy(new->data, params->tmpl, params->tmpl_len);
1019 rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1020
1021 if (old)
1022 kfree_rcu(old, rcu_head);
1023
1024 link_conf->unsol_bcast_probe_resp_interval = params->interval;
1025
1026 return 0;
1027 }
1028
ieee80211_set_ftm_responder_params(struct ieee80211_sub_if_data * sdata,const u8 * lci,size_t lci_len,const u8 * civicloc,size_t civicloc_len,struct ieee80211_bss_conf * link_conf)1029 static int ieee80211_set_ftm_responder_params(
1030 struct ieee80211_sub_if_data *sdata,
1031 const u8 *lci, size_t lci_len,
1032 const u8 *civicloc, size_t civicloc_len,
1033 struct ieee80211_bss_conf *link_conf)
1034 {
1035 struct ieee80211_ftm_responder_params *new, *old;
1036 u8 *pos;
1037 int len;
1038
1039 if (!lci_len && !civicloc_len)
1040 return 0;
1041
1042 old = link_conf->ftmr_params;
1043 len = lci_len + civicloc_len;
1044
1045 new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1046 if (!new)
1047 return -ENOMEM;
1048
1049 pos = (u8 *)(new + 1);
1050 if (lci_len) {
1051 new->lci_len = lci_len;
1052 new->lci = pos;
1053 memcpy(pos, lci, lci_len);
1054 pos += lci_len;
1055 }
1056
1057 if (civicloc_len) {
1058 new->civicloc_len = civicloc_len;
1059 new->civicloc = pos;
1060 memcpy(pos, civicloc, civicloc_len);
1061 pos += civicloc_len;
1062 }
1063
1064 link_conf->ftmr_params = new;
1065 kfree(old);
1066
1067 return 0;
1068 }
1069
1070 static int
ieee80211_copy_mbssid_beacon(u8 * pos,struct cfg80211_mbssid_elems * dst,struct cfg80211_mbssid_elems * src)1071 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1072 struct cfg80211_mbssid_elems *src)
1073 {
1074 int i, offset = 0;
1075
1076 for (i = 0; i < src->cnt; i++) {
1077 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1078 dst->elem[i].len = src->elem[i].len;
1079 dst->elem[i].data = pos + offset;
1080 offset += dst->elem[i].len;
1081 }
1082 dst->cnt = src->cnt;
1083
1084 return offset;
1085 }
1086
ieee80211_assign_beacon(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,struct cfg80211_beacon_data * params,const struct ieee80211_csa_settings * csa,const struct ieee80211_color_change_settings * cca)1087 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1088 struct ieee80211_link_data *link,
1089 struct cfg80211_beacon_data *params,
1090 const struct ieee80211_csa_settings *csa,
1091 const struct ieee80211_color_change_settings *cca)
1092 {
1093 struct cfg80211_mbssid_elems *mbssid = NULL;
1094 struct beacon_data *new, *old;
1095 int new_head_len, new_tail_len;
1096 int size, err;
1097 u32 changed = BSS_CHANGED_BEACON;
1098 struct ieee80211_bss_conf *link_conf = link->conf;
1099
1100 old = sdata_dereference(link->u.ap.beacon, sdata);
1101
1102 /* Need to have a beacon head if we don't have one yet */
1103 if (!params->head && !old)
1104 return -EINVAL;
1105
1106 /* new or old head? */
1107 if (params->head)
1108 new_head_len = params->head_len;
1109 else
1110 new_head_len = old->head_len;
1111
1112 /* new or old tail? */
1113 if (params->tail || !old)
1114 /* params->tail_len will be zero for !params->tail */
1115 new_tail_len = params->tail_len;
1116 else
1117 new_tail_len = old->tail_len;
1118
1119 size = sizeof(*new) + new_head_len + new_tail_len;
1120
1121 /* new or old multiple BSSID elements? */
1122 if (params->mbssid_ies) {
1123 mbssid = params->mbssid_ies;
1124 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1125 size += ieee80211_get_mbssid_beacon_len(mbssid);
1126 } else if (old && old->mbssid_ies) {
1127 mbssid = old->mbssid_ies;
1128 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1129 size += ieee80211_get_mbssid_beacon_len(mbssid);
1130 }
1131
1132 new = kzalloc(size, GFP_KERNEL);
1133 if (!new)
1134 return -ENOMEM;
1135
1136 /* start filling the new info now */
1137
1138 /*
1139 * pointers go into the block we allocated,
1140 * memory is | beacon_data | head | tail | mbssid_ies
1141 */
1142 new->head = ((u8 *) new) + sizeof(*new);
1143 new->tail = new->head + new_head_len;
1144 new->head_len = new_head_len;
1145 new->tail_len = new_tail_len;
1146 /* copy in optional mbssid_ies */
1147 if (mbssid) {
1148 u8 *pos = new->tail + new->tail_len;
1149
1150 new->mbssid_ies = (void *)pos;
1151 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1152 ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies, mbssid);
1153 /* update bssid_indicator */
1154 link_conf->bssid_indicator =
1155 ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
1156 }
1157
1158 if (csa) {
1159 new->cntdwn_current_counter = csa->count;
1160 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1161 csa->n_counter_offsets_beacon *
1162 sizeof(new->cntdwn_counter_offsets[0]));
1163 } else if (cca) {
1164 new->cntdwn_current_counter = cca->count;
1165 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1166 }
1167
1168 /* copy in head */
1169 if (params->head)
1170 memcpy(new->head, params->head, new_head_len);
1171 else
1172 memcpy(new->head, old->head, new_head_len);
1173
1174 /* copy in optional tail */
1175 if (params->tail)
1176 memcpy(new->tail, params->tail, new_tail_len);
1177 else
1178 if (old)
1179 memcpy(new->tail, old->tail, new_tail_len);
1180
1181 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1182 params->probe_resp_len, csa, cca, link);
1183 if (err < 0) {
1184 kfree(new);
1185 return err;
1186 }
1187 if (err == 0)
1188 changed |= BSS_CHANGED_AP_PROBE_RESP;
1189
1190 if (params->ftm_responder != -1) {
1191 link_conf->ftm_responder = params->ftm_responder;
1192 err = ieee80211_set_ftm_responder_params(sdata,
1193 params->lci,
1194 params->lci_len,
1195 params->civicloc,
1196 params->civicloc_len,
1197 link_conf);
1198
1199 if (err < 0) {
1200 kfree(new);
1201 return err;
1202 }
1203
1204 changed |= BSS_CHANGED_FTM_RESPONDER;
1205 }
1206
1207 rcu_assign_pointer(link->u.ap.beacon, new);
1208 sdata->u.ap.active = true;
1209
1210 if (old)
1211 kfree_rcu(old, rcu_head);
1212
1213 return changed;
1214 }
1215
ieee80211_start_ap(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ap_settings * params)1216 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1217 struct cfg80211_ap_settings *params)
1218 {
1219 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1220 struct ieee80211_local *local = sdata->local;
1221 struct beacon_data *old;
1222 struct ieee80211_sub_if_data *vlan;
1223 u32 changed = BSS_CHANGED_BEACON_INT |
1224 BSS_CHANGED_BEACON_ENABLED |
1225 BSS_CHANGED_BEACON |
1226 BSS_CHANGED_P2P_PS |
1227 BSS_CHANGED_TXPOWER |
1228 BSS_CHANGED_TWT;
1229 int i, err;
1230 int prev_beacon_int;
1231 unsigned int link_id = params->beacon.link_id;
1232 struct ieee80211_link_data *link;
1233 struct ieee80211_bss_conf *link_conf;
1234
1235 link = sdata_dereference(sdata->link[link_id], sdata);
1236 if (!link)
1237 return -ENOLINK;
1238
1239 link_conf = link->conf;
1240
1241 old = sdata_dereference(link->u.ap.beacon, sdata);
1242 if (old)
1243 return -EALREADY;
1244
1245 if (params->smps_mode != NL80211_SMPS_OFF)
1246 return -ENOTSUPP;
1247
1248 link->smps_mode = IEEE80211_SMPS_OFF;
1249
1250 link->needed_rx_chains = sdata->local->rx_chains;
1251
1252 prev_beacon_int = link_conf->beacon_int;
1253 link_conf->beacon_int = params->beacon_interval;
1254
1255 if (params->he_cap && params->he_oper) {
1256 link_conf->he_support = true;
1257 link_conf->htc_trig_based_pkt_ext =
1258 le32_get_bits(params->he_oper->he_oper_params,
1259 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1260 link_conf->frame_time_rts_th =
1261 le32_get_bits(params->he_oper->he_oper_params,
1262 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1263 changed |= BSS_CHANGED_HE_OBSS_PD;
1264
1265 if (params->beacon.he_bss_color.enabled)
1266 changed |= BSS_CHANGED_HE_BSS_COLOR;
1267 }
1268
1269 if (sdata->vif.type == NL80211_IFTYPE_AP &&
1270 params->mbssid_config.tx_wdev) {
1271 err = ieee80211_set_ap_mbssid_options(sdata,
1272 params->mbssid_config,
1273 link_conf);
1274 if (err)
1275 return err;
1276 }
1277
1278 mutex_lock(&local->mtx);
1279 err = ieee80211_link_use_channel(link, ¶ms->chandef,
1280 IEEE80211_CHANCTX_SHARED);
1281 if (!err)
1282 ieee80211_link_copy_chanctx_to_vlans(link, false);
1283 mutex_unlock(&local->mtx);
1284 if (err) {
1285 link_conf->beacon_int = prev_beacon_int;
1286 return err;
1287 }
1288
1289 /*
1290 * Apply control port protocol, this allows us to
1291 * not encrypt dynamic WEP control frames.
1292 */
1293 sdata->control_port_protocol = params->crypto.control_port_ethertype;
1294 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1295 sdata->control_port_over_nl80211 =
1296 params->crypto.control_port_over_nl80211;
1297 sdata->control_port_no_preauth =
1298 params->crypto.control_port_no_preauth;
1299
1300 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1301 vlan->control_port_protocol =
1302 params->crypto.control_port_ethertype;
1303 vlan->control_port_no_encrypt =
1304 params->crypto.control_port_no_encrypt;
1305 vlan->control_port_over_nl80211 =
1306 params->crypto.control_port_over_nl80211;
1307 vlan->control_port_no_preauth =
1308 params->crypto.control_port_no_preauth;
1309 }
1310
1311 link_conf->dtim_period = params->dtim_period;
1312 link_conf->enable_beacon = true;
1313 link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1314 link_conf->twt_responder = params->twt_responder;
1315 link_conf->he_obss_pd = params->he_obss_pd;
1316 link_conf->he_bss_color = params->beacon.he_bss_color;
1317 sdata->vif.cfg.s1g = params->chandef.chan->band ==
1318 NL80211_BAND_S1GHZ;
1319
1320 sdata->vif.cfg.ssid_len = params->ssid_len;
1321 if (params->ssid_len)
1322 memcpy(sdata->vif.cfg.ssid, params->ssid,
1323 params->ssid_len);
1324 link_conf->hidden_ssid =
1325 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1326
1327 memset(&link_conf->p2p_noa_attr, 0,
1328 sizeof(link_conf->p2p_noa_attr));
1329 link_conf->p2p_noa_attr.oppps_ctwindow =
1330 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1331 if (params->p2p_opp_ps)
1332 link_conf->p2p_noa_attr.oppps_ctwindow |=
1333 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1334
1335 sdata->beacon_rate_set = false;
1336 if (wiphy_ext_feature_isset(local->hw.wiphy,
1337 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1338 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1339 sdata->beacon_rateidx_mask[i] =
1340 params->beacon_rate.control[i].legacy;
1341 if (sdata->beacon_rateidx_mask[i])
1342 sdata->beacon_rate_set = true;
1343 }
1344 }
1345
1346 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1347 link_conf->beacon_tx_rate = params->beacon_rate;
1348
1349 err = ieee80211_assign_beacon(sdata, link, ¶ms->beacon, NULL, NULL);
1350 if (err < 0)
1351 goto error;
1352 changed |= err;
1353
1354 if (params->fils_discovery.max_interval) {
1355 err = ieee80211_set_fils_discovery(sdata,
1356 ¶ms->fils_discovery,
1357 link, link_conf);
1358 if (err < 0)
1359 goto error;
1360 changed |= BSS_CHANGED_FILS_DISCOVERY;
1361 }
1362
1363 if (params->unsol_bcast_probe_resp.interval) {
1364 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1365 ¶ms->unsol_bcast_probe_resp,
1366 link, link_conf);
1367 if (err < 0)
1368 goto error;
1369 changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1370 }
1371
1372 err = drv_start_ap(sdata->local, sdata, link_conf);
1373 if (err) {
1374 old = sdata_dereference(link->u.ap.beacon, sdata);
1375
1376 if (old)
1377 kfree_rcu(old, rcu_head);
1378 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1379 sdata->u.ap.active = false;
1380 goto error;
1381 }
1382
1383 ieee80211_recalc_dtim(local, sdata);
1384 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1385 ieee80211_link_info_change_notify(sdata, link, changed);
1386
1387 netif_carrier_on(dev);
1388 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1389 netif_carrier_on(vlan->dev);
1390
1391 return 0;
1392
1393 error:
1394 mutex_lock(&local->mtx);
1395 ieee80211_link_release_channel(link);
1396 mutex_unlock(&local->mtx);
1397
1398 return err;
1399 }
1400
ieee80211_change_beacon(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_beacon_data * params)1401 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1402 struct cfg80211_beacon_data *params)
1403 {
1404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1405 struct ieee80211_link_data *link;
1406 struct beacon_data *old;
1407 int err;
1408 struct ieee80211_bss_conf *link_conf;
1409
1410 sdata_assert_lock(sdata);
1411
1412 link = sdata_dereference(sdata->link[params->link_id], sdata);
1413 if (!link)
1414 return -ENOLINK;
1415
1416 link_conf = link->conf;
1417
1418 /* don't allow changing the beacon while a countdown is in place - offset
1419 * of channel switch counter may change
1420 */
1421 if (link_conf->csa_active || link_conf->color_change_active)
1422 return -EBUSY;
1423
1424 old = sdata_dereference(link->u.ap.beacon, sdata);
1425 if (!old)
1426 return -ENOENT;
1427
1428 err = ieee80211_assign_beacon(sdata, link, params, NULL, NULL);
1429 if (err < 0)
1430 return err;
1431
1432 if (params->he_bss_color_valid &&
1433 params->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1434 link_conf->he_bss_color.enabled = params->he_bss_color.enabled;
1435 err |= BSS_CHANGED_HE_BSS_COLOR;
1436 }
1437
1438 ieee80211_link_info_change_notify(sdata, link, err);
1439 return 0;
1440 }
1441
ieee80211_free_next_beacon(struct ieee80211_link_data * link)1442 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1443 {
1444 if (!link->u.ap.next_beacon)
1445 return;
1446
1447 kfree(link->u.ap.next_beacon->mbssid_ies);
1448 kfree(link->u.ap.next_beacon);
1449 link->u.ap.next_beacon = NULL;
1450 }
1451
ieee80211_stop_ap(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id)1452 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1453 unsigned int link_id)
1454 {
1455 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1456 struct ieee80211_sub_if_data *vlan;
1457 struct ieee80211_local *local = sdata->local;
1458 struct beacon_data *old_beacon;
1459 struct probe_resp *old_probe_resp;
1460 struct fils_discovery_data *old_fils_discovery;
1461 struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1462 struct cfg80211_chan_def chandef;
1463 struct ieee80211_link_data *link =
1464 sdata_dereference(sdata->link[link_id], sdata);
1465 struct ieee80211_bss_conf *link_conf = link->conf;
1466
1467 sdata_assert_lock(sdata);
1468
1469 old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1470 if (!old_beacon)
1471 return -ENOENT;
1472 old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1473 sdata);
1474 old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1475 sdata);
1476 old_unsol_bcast_probe_resp =
1477 sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1478 sdata);
1479
1480 /* abort any running channel switch */
1481 mutex_lock(&local->mtx);
1482 link_conf->csa_active = false;
1483 if (link->csa_block_tx) {
1484 ieee80211_wake_vif_queues(local, sdata,
1485 IEEE80211_QUEUE_STOP_REASON_CSA);
1486 link->csa_block_tx = false;
1487 }
1488
1489 mutex_unlock(&local->mtx);
1490
1491 ieee80211_free_next_beacon(link);
1492
1493 /* turn off carrier for this interface and dependent VLANs */
1494 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1495 netif_carrier_off(vlan->dev);
1496 netif_carrier_off(dev);
1497
1498 /* remove beacon and probe response */
1499 sdata->u.ap.active = false;
1500 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1501 RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1502 RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1503 RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1504 kfree_rcu(old_beacon, rcu_head);
1505 if (old_probe_resp)
1506 kfree_rcu(old_probe_resp, rcu_head);
1507 if (old_fils_discovery)
1508 kfree_rcu(old_fils_discovery, rcu_head);
1509 if (old_unsol_bcast_probe_resp)
1510 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1511
1512 kfree(link_conf->ftmr_params);
1513 link_conf->ftmr_params = NULL;
1514
1515 sdata->vif.mbssid_tx_vif = NULL;
1516 link_conf->bssid_index = 0;
1517 link_conf->nontransmitted = false;
1518 link_conf->ema_ap = false;
1519 link_conf->bssid_indicator = 0;
1520
1521 __sta_info_flush(sdata, true);
1522 ieee80211_free_keys(sdata, true);
1523
1524 link_conf->enable_beacon = false;
1525 sdata->beacon_rate_set = false;
1526 sdata->vif.cfg.ssid_len = 0;
1527 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1528 ieee80211_link_info_change_notify(sdata, link,
1529 BSS_CHANGED_BEACON_ENABLED);
1530
1531 if (sdata->wdev.cac_started) {
1532 chandef = link_conf->chandef;
1533 cancel_delayed_work_sync(&link->dfs_cac_timer_work);
1534 cfg80211_cac_event(sdata->dev, &chandef,
1535 NL80211_RADAR_CAC_ABORTED,
1536 GFP_KERNEL);
1537 }
1538
1539 drv_stop_ap(sdata->local, sdata, link_conf);
1540
1541 /* free all potentially still buffered bcast frames */
1542 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1543 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1544
1545 mutex_lock(&local->mtx);
1546 ieee80211_link_copy_chanctx_to_vlans(link, true);
1547 ieee80211_link_release_channel(link);
1548 mutex_unlock(&local->mtx);
1549
1550 return 0;
1551 }
1552
sta_apply_auth_flags(struct ieee80211_local * local,struct sta_info * sta,u32 mask,u32 set)1553 static int sta_apply_auth_flags(struct ieee80211_local *local,
1554 struct sta_info *sta,
1555 u32 mask, u32 set)
1556 {
1557 int ret;
1558
1559 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1560 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1561 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1562 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1563 if (ret)
1564 return ret;
1565 }
1566
1567 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1568 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1569 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1570 /*
1571 * When peer becomes associated, init rate control as
1572 * well. Some drivers require rate control initialized
1573 * before drv_sta_state() is called.
1574 */
1575 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1576 rate_control_rate_init(sta);
1577
1578 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1579 if (ret)
1580 return ret;
1581 }
1582
1583 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1584 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1585 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1586 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1587 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1588 else
1589 ret = 0;
1590 if (ret)
1591 return ret;
1592 }
1593
1594 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1595 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1596 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1597 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1598 if (ret)
1599 return ret;
1600 }
1601
1602 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1603 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1604 test_sta_flag(sta, WLAN_STA_AUTH)) {
1605 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1606 if (ret)
1607 return ret;
1608 }
1609
1610 return 0;
1611 }
1612
sta_apply_mesh_params(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1613 static void sta_apply_mesh_params(struct ieee80211_local *local,
1614 struct sta_info *sta,
1615 struct station_parameters *params)
1616 {
1617 #ifdef CONFIG_MAC80211_MESH
1618 struct ieee80211_sub_if_data *sdata = sta->sdata;
1619 u32 changed = 0;
1620
1621 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1622 switch (params->plink_state) {
1623 case NL80211_PLINK_ESTAB:
1624 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1625 changed = mesh_plink_inc_estab_count(sdata);
1626 sta->mesh->plink_state = params->plink_state;
1627 sta->mesh->aid = params->peer_aid;
1628
1629 ieee80211_mps_sta_status_update(sta);
1630 changed |= ieee80211_mps_set_sta_local_pm(sta,
1631 sdata->u.mesh.mshcfg.power_mode);
1632
1633 ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1634 /* init at low value */
1635 ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1636
1637 break;
1638 case NL80211_PLINK_LISTEN:
1639 case NL80211_PLINK_BLOCKED:
1640 case NL80211_PLINK_OPN_SNT:
1641 case NL80211_PLINK_OPN_RCVD:
1642 case NL80211_PLINK_CNF_RCVD:
1643 case NL80211_PLINK_HOLDING:
1644 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1645 changed = mesh_plink_dec_estab_count(sdata);
1646 sta->mesh->plink_state = params->plink_state;
1647
1648 ieee80211_mps_sta_status_update(sta);
1649 changed |= ieee80211_mps_set_sta_local_pm(sta,
1650 NL80211_MESH_POWER_UNKNOWN);
1651 break;
1652 default:
1653 /* nothing */
1654 break;
1655 }
1656 }
1657
1658 switch (params->plink_action) {
1659 case NL80211_PLINK_ACTION_NO_ACTION:
1660 /* nothing */
1661 break;
1662 case NL80211_PLINK_ACTION_OPEN:
1663 changed |= mesh_plink_open(sta);
1664 break;
1665 case NL80211_PLINK_ACTION_BLOCK:
1666 changed |= mesh_plink_block(sta);
1667 break;
1668 }
1669
1670 if (params->local_pm)
1671 changed |= ieee80211_mps_set_sta_local_pm(sta,
1672 params->local_pm);
1673
1674 ieee80211_mbss_info_change_notify(sdata, changed);
1675 #endif
1676 }
1677
sta_link_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,bool new_link,struct link_station_parameters * params)1678 static int sta_link_apply_parameters(struct ieee80211_local *local,
1679 struct sta_info *sta, bool new_link,
1680 struct link_station_parameters *params)
1681 {
1682 int ret = 0;
1683 struct ieee80211_supported_band *sband;
1684 struct ieee80211_sub_if_data *sdata = sta->sdata;
1685 u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1686 struct ieee80211_link_data *link =
1687 sdata_dereference(sdata->link[link_id], sdata);
1688 struct link_sta_info *link_sta =
1689 rcu_dereference_protected(sta->link[link_id],
1690 lockdep_is_held(&local->sta_mtx));
1691
1692 /*
1693 * If there are no changes, then accept a link that doesn't exist,
1694 * unless it's a new link.
1695 */
1696 if (params->link_id < 0 && !new_link &&
1697 !params->link_mac && !params->txpwr_set &&
1698 !params->supported_rates_len &&
1699 !params->ht_capa && !params->vht_capa &&
1700 !params->he_capa && !params->eht_capa &&
1701 !params->opmode_notif_used)
1702 return 0;
1703
1704 if (!link || !link_sta)
1705 return -EINVAL;
1706
1707 sband = ieee80211_get_link_sband(link);
1708 if (!sband)
1709 return -EINVAL;
1710
1711 if (params->link_mac) {
1712 if (new_link) {
1713 memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1714 memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1715 } else if (!ether_addr_equal(link_sta->addr,
1716 params->link_mac)) {
1717 return -EINVAL;
1718 }
1719 } else if (new_link) {
1720 return -EINVAL;
1721 }
1722
1723 if (params->txpwr_set) {
1724 link_sta->pub->txpwr.type = params->txpwr.type;
1725 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1726 link_sta->pub->txpwr.power = params->txpwr.power;
1727 ret = drv_sta_set_txpwr(local, sdata, sta);
1728 if (ret)
1729 return ret;
1730 }
1731
1732 if (params->supported_rates &&
1733 params->supported_rates_len) {
1734 ieee80211_parse_bitrates(link->conf->chandef.width,
1735 sband, params->supported_rates,
1736 params->supported_rates_len,
1737 &link_sta->pub->supp_rates[sband->band]);
1738 }
1739
1740 if (params->ht_capa)
1741 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1742 params->ht_capa, link_sta);
1743
1744 /* VHT can override some HT caps such as the A-MSDU max length */
1745 if (params->vht_capa)
1746 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1747 params->vht_capa, link_sta);
1748
1749 if (params->he_capa)
1750 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1751 (void *)params->he_capa,
1752 params->he_capa_len,
1753 (void *)params->he_6ghz_capa,
1754 link_sta);
1755
1756 if (params->eht_capa)
1757 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
1758 (u8 *)params->he_capa,
1759 params->he_capa_len,
1760 params->eht_capa,
1761 params->eht_capa_len,
1762 link_sta);
1763
1764 if (params->opmode_notif_used) {
1765 /* returned value is only needed for rc update, but the
1766 * rc isn't initialized here yet, so ignore it
1767 */
1768 __ieee80211_vht_handle_opmode(sdata, link_sta,
1769 params->opmode_notif,
1770 sband->band);
1771 }
1772
1773 return ret;
1774 }
1775
sta_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1776 static int sta_apply_parameters(struct ieee80211_local *local,
1777 struct sta_info *sta,
1778 struct station_parameters *params)
1779 {
1780 struct ieee80211_sub_if_data *sdata = sta->sdata;
1781 u32 mask, set;
1782 int ret = 0;
1783
1784 mask = params->sta_flags_mask;
1785 set = params->sta_flags_set;
1786
1787 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1788 /*
1789 * In mesh mode, ASSOCIATED isn't part of the nl80211
1790 * API but must follow AUTHENTICATED for driver state.
1791 */
1792 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1793 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1794 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1795 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1796 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1797 /*
1798 * TDLS -- everything follows authorized, but
1799 * only becoming authorized is possible, not
1800 * going back
1801 */
1802 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1803 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1804 BIT(NL80211_STA_FLAG_ASSOCIATED);
1805 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1806 BIT(NL80211_STA_FLAG_ASSOCIATED);
1807 }
1808 }
1809
1810 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1811 local->hw.queues >= IEEE80211_NUM_ACS)
1812 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1813
1814 /* auth flags will be set later for TDLS,
1815 * and for unassociated stations that move to associated */
1816 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1817 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1818 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1819 ret = sta_apply_auth_flags(local, sta, mask, set);
1820 if (ret)
1821 return ret;
1822 }
1823
1824 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1825 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1826 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1827 else
1828 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1829 }
1830
1831 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1832 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1833 if (set & BIT(NL80211_STA_FLAG_MFP))
1834 set_sta_flag(sta, WLAN_STA_MFP);
1835 else
1836 clear_sta_flag(sta, WLAN_STA_MFP);
1837 }
1838
1839 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1840 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1841 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1842 else
1843 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1844 }
1845
1846 /* mark TDLS channel switch support, if the AP allows it */
1847 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1848 !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
1849 params->ext_capab_len >= 4 &&
1850 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1851 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1852
1853 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1854 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1855 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1856 params->ext_capab_len >= 8 &&
1857 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1858 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1859
1860 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1861 sta->sta.uapsd_queues = params->uapsd_queues;
1862 sta->sta.max_sp = params->max_sp;
1863 }
1864
1865 ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
1866 params->ext_capab_len);
1867
1868 /*
1869 * cfg80211 validates this (1-2007) and allows setting the AID
1870 * only when creating a new station entry
1871 */
1872 if (params->aid)
1873 sta->sta.aid = params->aid;
1874
1875 /*
1876 * Some of the following updates would be racy if called on an
1877 * existing station, via ieee80211_change_station(). However,
1878 * all such changes are rejected by cfg80211 except for updates
1879 * changing the supported rates on an existing but not yet used
1880 * TDLS peer.
1881 */
1882
1883 if (params->listen_interval >= 0)
1884 sta->listen_interval = params->listen_interval;
1885
1886 ret = sta_link_apply_parameters(local, sta, false,
1887 ¶ms->link_sta_params);
1888 if (ret)
1889 return ret;
1890
1891 if (params->support_p2p_ps >= 0)
1892 sta->sta.support_p2p_ps = params->support_p2p_ps;
1893
1894 if (ieee80211_vif_is_mesh(&sdata->vif))
1895 sta_apply_mesh_params(local, sta, params);
1896
1897 if (params->airtime_weight)
1898 sta->airtime_weight = params->airtime_weight;
1899
1900 /* set the STA state after all sta info from usermode has been set */
1901 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1902 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1903 ret = sta_apply_auth_flags(local, sta, mask, set);
1904 if (ret)
1905 return ret;
1906 }
1907
1908 /* Mark the STA as MLO if MLD MAC address is available */
1909 if (params->link_sta_params.mld_mac)
1910 sta->sta.mlo = true;
1911
1912 return 0;
1913 }
1914
ieee80211_add_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)1915 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1916 const u8 *mac,
1917 struct station_parameters *params)
1918 {
1919 struct ieee80211_local *local = wiphy_priv(wiphy);
1920 struct sta_info *sta;
1921 struct ieee80211_sub_if_data *sdata;
1922 int err;
1923
1924 if (params->vlan) {
1925 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1926
1927 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1928 sdata->vif.type != NL80211_IFTYPE_AP)
1929 return -EINVAL;
1930 } else
1931 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1932
1933 if (ether_addr_equal(mac, sdata->vif.addr))
1934 return -EINVAL;
1935
1936 if (!is_valid_ether_addr(mac))
1937 return -EINVAL;
1938
1939 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1940 sdata->vif.type == NL80211_IFTYPE_STATION &&
1941 !sdata->u.mgd.associated)
1942 return -EINVAL;
1943
1944 /*
1945 * If we have a link ID, it can be a non-MLO station on an AP MLD,
1946 * but we need to have a link_mac in that case as well, so use the
1947 * STA's MAC address in that case.
1948 */
1949 if (params->link_sta_params.link_id >= 0)
1950 sta = sta_info_alloc_with_link(sdata, mac,
1951 params->link_sta_params.link_id,
1952 params->link_sta_params.link_mac ?: mac,
1953 GFP_KERNEL);
1954 else
1955 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1956
1957 if (!sta)
1958 return -ENOMEM;
1959
1960 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1961 sta->sta.tdls = true;
1962
1963 /* Though the mutex is not needed here (since the station is not
1964 * visible yet), sta_apply_parameters (and inner functions) require
1965 * the mutex due to other paths.
1966 */
1967 mutex_lock(&local->sta_mtx);
1968 err = sta_apply_parameters(local, sta, params);
1969 mutex_unlock(&local->sta_mtx);
1970 if (err) {
1971 sta_info_free(local, sta);
1972 return err;
1973 }
1974
1975 /*
1976 * for TDLS and for unassociated station, rate control should be
1977 * initialized only when rates are known and station is marked
1978 * authorized/associated
1979 */
1980 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1981 test_sta_flag(sta, WLAN_STA_ASSOC))
1982 rate_control_rate_init(sta);
1983
1984 return sta_info_insert(sta);
1985 }
1986
ieee80211_del_station(struct wiphy * wiphy,struct net_device * dev,struct station_del_parameters * params)1987 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1988 struct station_del_parameters *params)
1989 {
1990 struct ieee80211_sub_if_data *sdata;
1991
1992 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1993
1994 if (params->mac)
1995 return sta_info_destroy_addr_bss(sdata, params->mac);
1996
1997 sta_info_flush(sdata);
1998 return 0;
1999 }
2000
ieee80211_change_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)2001 static int ieee80211_change_station(struct wiphy *wiphy,
2002 struct net_device *dev, const u8 *mac,
2003 struct station_parameters *params)
2004 {
2005 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2006 struct ieee80211_local *local = wiphy_priv(wiphy);
2007 struct sta_info *sta;
2008 struct ieee80211_sub_if_data *vlansdata;
2009 enum cfg80211_station_type statype;
2010 int err;
2011
2012 mutex_lock(&local->sta_mtx);
2013
2014 sta = sta_info_get_bss(sdata, mac);
2015 if (!sta) {
2016 err = -ENOENT;
2017 goto out_err;
2018 }
2019
2020 switch (sdata->vif.type) {
2021 case NL80211_IFTYPE_MESH_POINT:
2022 if (sdata->u.mesh.user_mpm)
2023 statype = CFG80211_STA_MESH_PEER_USER;
2024 else
2025 statype = CFG80211_STA_MESH_PEER_KERNEL;
2026 break;
2027 case NL80211_IFTYPE_ADHOC:
2028 statype = CFG80211_STA_IBSS;
2029 break;
2030 case NL80211_IFTYPE_STATION:
2031 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2032 statype = CFG80211_STA_AP_STA;
2033 break;
2034 }
2035 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2036 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2037 else
2038 statype = CFG80211_STA_TDLS_PEER_SETUP;
2039 break;
2040 case NL80211_IFTYPE_AP:
2041 case NL80211_IFTYPE_AP_VLAN:
2042 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2043 statype = CFG80211_STA_AP_CLIENT;
2044 else
2045 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2046 break;
2047 default:
2048 err = -EOPNOTSUPP;
2049 goto out_err;
2050 }
2051
2052 err = cfg80211_check_station_change(wiphy, params, statype);
2053 if (err)
2054 goto out_err;
2055
2056 if (params->vlan && params->vlan != sta->sdata->dev) {
2057 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2058
2059 if (params->vlan->ieee80211_ptr->use_4addr) {
2060 if (vlansdata->u.vlan.sta) {
2061 err = -EBUSY;
2062 goto out_err;
2063 }
2064
2065 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2066 __ieee80211_check_fast_rx_iface(vlansdata);
2067 drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2068 }
2069
2070 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2071 sta->sdata->u.vlan.sta) {
2072 ieee80211_clear_fast_rx(sta);
2073 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2074 }
2075
2076 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2077 ieee80211_vif_dec_num_mcast(sta->sdata);
2078
2079 sta->sdata = vlansdata;
2080 ieee80211_check_fast_xmit(sta);
2081
2082 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2083 ieee80211_vif_inc_num_mcast(sta->sdata);
2084 cfg80211_send_layer2_update(sta->sdata->dev,
2085 sta->sta.addr);
2086 }
2087 }
2088
2089 /* we use sta_info_get_bss() so this might be different */
2090 if (sdata != sta->sdata) {
2091 mutex_lock_nested(&sta->sdata->wdev.mtx, 1);
2092 err = sta_apply_parameters(local, sta, params);
2093 mutex_unlock(&sta->sdata->wdev.mtx);
2094 } else {
2095 err = sta_apply_parameters(local, sta, params);
2096 }
2097 if (err)
2098 goto out_err;
2099
2100 mutex_unlock(&local->sta_mtx);
2101
2102 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2103 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2104 ieee80211_recalc_ps(local);
2105 ieee80211_recalc_ps_vif(sdata);
2106 }
2107
2108 return 0;
2109 out_err:
2110 mutex_unlock(&local->sta_mtx);
2111 return err;
2112 }
2113
2114 #ifdef CONFIG_MAC80211_MESH
ieee80211_add_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)2115 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2116 const u8 *dst, const u8 *next_hop)
2117 {
2118 struct ieee80211_sub_if_data *sdata;
2119 struct mesh_path *mpath;
2120 struct sta_info *sta;
2121
2122 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2123
2124 rcu_read_lock();
2125 sta = sta_info_get(sdata, next_hop);
2126 if (!sta) {
2127 rcu_read_unlock();
2128 return -ENOENT;
2129 }
2130
2131 mpath = mesh_path_add(sdata, dst);
2132 if (IS_ERR(mpath)) {
2133 rcu_read_unlock();
2134 return PTR_ERR(mpath);
2135 }
2136
2137 mesh_path_fix_nexthop(mpath, sta);
2138
2139 rcu_read_unlock();
2140 return 0;
2141 }
2142
ieee80211_del_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst)2143 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2144 const u8 *dst)
2145 {
2146 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2147
2148 if (dst)
2149 return mesh_path_del(sdata, dst);
2150
2151 mesh_path_flush_by_iface(sdata);
2152 return 0;
2153 }
2154
ieee80211_change_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)2155 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2156 const u8 *dst, const u8 *next_hop)
2157 {
2158 struct ieee80211_sub_if_data *sdata;
2159 struct mesh_path *mpath;
2160 struct sta_info *sta;
2161
2162 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2163
2164 rcu_read_lock();
2165
2166 sta = sta_info_get(sdata, next_hop);
2167 if (!sta) {
2168 rcu_read_unlock();
2169 return -ENOENT;
2170 }
2171
2172 mpath = mesh_path_lookup(sdata, dst);
2173 if (!mpath) {
2174 rcu_read_unlock();
2175 return -ENOENT;
2176 }
2177
2178 mesh_path_fix_nexthop(mpath, sta);
2179
2180 rcu_read_unlock();
2181 return 0;
2182 }
2183
mpath_set_pinfo(struct mesh_path * mpath,u8 * next_hop,struct mpath_info * pinfo)2184 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2185 struct mpath_info *pinfo)
2186 {
2187 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2188
2189 if (next_hop_sta)
2190 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2191 else
2192 eth_zero_addr(next_hop);
2193
2194 memset(pinfo, 0, sizeof(*pinfo));
2195
2196 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2197
2198 pinfo->filled = MPATH_INFO_FRAME_QLEN |
2199 MPATH_INFO_SN |
2200 MPATH_INFO_METRIC |
2201 MPATH_INFO_EXPTIME |
2202 MPATH_INFO_DISCOVERY_TIMEOUT |
2203 MPATH_INFO_DISCOVERY_RETRIES |
2204 MPATH_INFO_FLAGS |
2205 MPATH_INFO_HOP_COUNT |
2206 MPATH_INFO_PATH_CHANGE;
2207
2208 pinfo->frame_qlen = mpath->frame_queue.qlen;
2209 pinfo->sn = mpath->sn;
2210 pinfo->metric = mpath->metric;
2211 if (time_before(jiffies, mpath->exp_time))
2212 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2213 pinfo->discovery_timeout =
2214 jiffies_to_msecs(mpath->discovery_timeout);
2215 pinfo->discovery_retries = mpath->discovery_retries;
2216 if (mpath->flags & MESH_PATH_ACTIVE)
2217 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2218 if (mpath->flags & MESH_PATH_RESOLVING)
2219 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2220 if (mpath->flags & MESH_PATH_SN_VALID)
2221 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2222 if (mpath->flags & MESH_PATH_FIXED)
2223 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2224 if (mpath->flags & MESH_PATH_RESOLVED)
2225 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2226 pinfo->hop_count = mpath->hop_count;
2227 pinfo->path_change_count = mpath->path_change_count;
2228 }
2229
ieee80211_get_mpath(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)2230 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2231 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2232
2233 {
2234 struct ieee80211_sub_if_data *sdata;
2235 struct mesh_path *mpath;
2236
2237 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2238
2239 rcu_read_lock();
2240 mpath = mesh_path_lookup(sdata, dst);
2241 if (!mpath) {
2242 rcu_read_unlock();
2243 return -ENOENT;
2244 }
2245 memcpy(dst, mpath->dst, ETH_ALEN);
2246 mpath_set_pinfo(mpath, next_hop, pinfo);
2247 rcu_read_unlock();
2248 return 0;
2249 }
2250
ieee80211_dump_mpath(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)2251 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2252 int idx, u8 *dst, u8 *next_hop,
2253 struct mpath_info *pinfo)
2254 {
2255 struct ieee80211_sub_if_data *sdata;
2256 struct mesh_path *mpath;
2257
2258 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2259
2260 rcu_read_lock();
2261 mpath = mesh_path_lookup_by_idx(sdata, idx);
2262 if (!mpath) {
2263 rcu_read_unlock();
2264 return -ENOENT;
2265 }
2266 memcpy(dst, mpath->dst, ETH_ALEN);
2267 mpath_set_pinfo(mpath, next_hop, pinfo);
2268 rcu_read_unlock();
2269 return 0;
2270 }
2271
mpp_set_pinfo(struct mesh_path * mpath,u8 * mpp,struct mpath_info * pinfo)2272 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2273 struct mpath_info *pinfo)
2274 {
2275 memset(pinfo, 0, sizeof(*pinfo));
2276 memcpy(mpp, mpath->mpp, ETH_ALEN);
2277
2278 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2279 }
2280
ieee80211_get_mpp(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * mpp,struct mpath_info * pinfo)2281 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2282 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2283
2284 {
2285 struct ieee80211_sub_if_data *sdata;
2286 struct mesh_path *mpath;
2287
2288 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2289
2290 rcu_read_lock();
2291 mpath = mpp_path_lookup(sdata, dst);
2292 if (!mpath) {
2293 rcu_read_unlock();
2294 return -ENOENT;
2295 }
2296 memcpy(dst, mpath->dst, ETH_ALEN);
2297 mpp_set_pinfo(mpath, mpp, pinfo);
2298 rcu_read_unlock();
2299 return 0;
2300 }
2301
ieee80211_dump_mpp(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * mpp,struct mpath_info * pinfo)2302 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2303 int idx, u8 *dst, u8 *mpp,
2304 struct mpath_info *pinfo)
2305 {
2306 struct ieee80211_sub_if_data *sdata;
2307 struct mesh_path *mpath;
2308
2309 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2310
2311 rcu_read_lock();
2312 mpath = mpp_path_lookup_by_idx(sdata, idx);
2313 if (!mpath) {
2314 rcu_read_unlock();
2315 return -ENOENT;
2316 }
2317 memcpy(dst, mpath->dst, ETH_ALEN);
2318 mpp_set_pinfo(mpath, mpp, pinfo);
2319 rcu_read_unlock();
2320 return 0;
2321 }
2322
ieee80211_get_mesh_config(struct wiphy * wiphy,struct net_device * dev,struct mesh_config * conf)2323 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2324 struct net_device *dev,
2325 struct mesh_config *conf)
2326 {
2327 struct ieee80211_sub_if_data *sdata;
2328 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2329
2330 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2331 return 0;
2332 }
2333
_chg_mesh_attr(enum nl80211_meshconf_params parm,u32 mask)2334 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2335 {
2336 return (mask >> (parm-1)) & 0x1;
2337 }
2338
copy_mesh_setup(struct ieee80211_if_mesh * ifmsh,const struct mesh_setup * setup)2339 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2340 const struct mesh_setup *setup)
2341 {
2342 u8 *new_ie;
2343 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2344 struct ieee80211_sub_if_data, u.mesh);
2345 int i;
2346
2347 /* allocate information elements */
2348 new_ie = NULL;
2349
2350 if (setup->ie_len) {
2351 new_ie = kmemdup(setup->ie, setup->ie_len,
2352 GFP_KERNEL);
2353 if (!new_ie)
2354 return -ENOMEM;
2355 }
2356 ifmsh->ie_len = setup->ie_len;
2357 ifmsh->ie = new_ie;
2358
2359 /* now copy the rest of the setup parameters */
2360 ifmsh->mesh_id_len = setup->mesh_id_len;
2361 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2362 ifmsh->mesh_sp_id = setup->sync_method;
2363 ifmsh->mesh_pp_id = setup->path_sel_proto;
2364 ifmsh->mesh_pm_id = setup->path_metric;
2365 ifmsh->user_mpm = setup->user_mpm;
2366 ifmsh->mesh_auth_id = setup->auth_id;
2367 ifmsh->security = IEEE80211_MESH_SEC_NONE;
2368 ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2369 if (setup->is_authenticated)
2370 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2371 if (setup->is_secure)
2372 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2373
2374 /* mcast rate setting in Mesh Node */
2375 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2376 sizeof(setup->mcast_rate));
2377 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2378
2379 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2380 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2381
2382 sdata->beacon_rate_set = false;
2383 if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2384 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2385 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2386 sdata->beacon_rateidx_mask[i] =
2387 setup->beacon_rate.control[i].legacy;
2388 if (sdata->beacon_rateidx_mask[i])
2389 sdata->beacon_rate_set = true;
2390 }
2391 }
2392
2393 return 0;
2394 }
2395
ieee80211_update_mesh_config(struct wiphy * wiphy,struct net_device * dev,u32 mask,const struct mesh_config * nconf)2396 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2397 struct net_device *dev, u32 mask,
2398 const struct mesh_config *nconf)
2399 {
2400 struct mesh_config *conf;
2401 struct ieee80211_sub_if_data *sdata;
2402 struct ieee80211_if_mesh *ifmsh;
2403
2404 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2405 ifmsh = &sdata->u.mesh;
2406
2407 /* Set the config options which we are interested in setting */
2408 conf = &(sdata->u.mesh.mshcfg);
2409 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2410 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2411 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2412 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2413 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2414 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2415 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2416 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2417 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2418 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2419 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2420 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2421 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2422 conf->element_ttl = nconf->element_ttl;
2423 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2424 if (ifmsh->user_mpm)
2425 return -EBUSY;
2426 conf->auto_open_plinks = nconf->auto_open_plinks;
2427 }
2428 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2429 conf->dot11MeshNbrOffsetMaxNeighbor =
2430 nconf->dot11MeshNbrOffsetMaxNeighbor;
2431 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2432 conf->dot11MeshHWMPmaxPREQretries =
2433 nconf->dot11MeshHWMPmaxPREQretries;
2434 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2435 conf->path_refresh_time = nconf->path_refresh_time;
2436 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2437 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2438 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2439 conf->dot11MeshHWMPactivePathTimeout =
2440 nconf->dot11MeshHWMPactivePathTimeout;
2441 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2442 conf->dot11MeshHWMPpreqMinInterval =
2443 nconf->dot11MeshHWMPpreqMinInterval;
2444 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2445 conf->dot11MeshHWMPperrMinInterval =
2446 nconf->dot11MeshHWMPperrMinInterval;
2447 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2448 mask))
2449 conf->dot11MeshHWMPnetDiameterTraversalTime =
2450 nconf->dot11MeshHWMPnetDiameterTraversalTime;
2451 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2452 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2453 ieee80211_mesh_root_setup(ifmsh);
2454 }
2455 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2456 /* our current gate announcement implementation rides on root
2457 * announcements, so require this ifmsh to also be a root node
2458 * */
2459 if (nconf->dot11MeshGateAnnouncementProtocol &&
2460 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2461 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2462 ieee80211_mesh_root_setup(ifmsh);
2463 }
2464 conf->dot11MeshGateAnnouncementProtocol =
2465 nconf->dot11MeshGateAnnouncementProtocol;
2466 }
2467 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2468 conf->dot11MeshHWMPRannInterval =
2469 nconf->dot11MeshHWMPRannInterval;
2470 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2471 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2472 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2473 /* our RSSI threshold implementation is supported only for
2474 * devices that report signal in dBm.
2475 */
2476 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2477 return -ENOTSUPP;
2478 conf->rssi_threshold = nconf->rssi_threshold;
2479 }
2480 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2481 conf->ht_opmode = nconf->ht_opmode;
2482 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2483 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2484 BSS_CHANGED_HT);
2485 }
2486 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2487 conf->dot11MeshHWMPactivePathToRootTimeout =
2488 nconf->dot11MeshHWMPactivePathToRootTimeout;
2489 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2490 conf->dot11MeshHWMProotInterval =
2491 nconf->dot11MeshHWMProotInterval;
2492 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2493 conf->dot11MeshHWMPconfirmationInterval =
2494 nconf->dot11MeshHWMPconfirmationInterval;
2495 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2496 conf->power_mode = nconf->power_mode;
2497 ieee80211_mps_local_status_update(sdata);
2498 }
2499 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2500 conf->dot11MeshAwakeWindowDuration =
2501 nconf->dot11MeshAwakeWindowDuration;
2502 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2503 conf->plink_timeout = nconf->plink_timeout;
2504 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2505 conf->dot11MeshConnectedToMeshGate =
2506 nconf->dot11MeshConnectedToMeshGate;
2507 if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2508 conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2509 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2510 conf->dot11MeshConnectedToAuthServer =
2511 nconf->dot11MeshConnectedToAuthServer;
2512 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2513 return 0;
2514 }
2515
ieee80211_join_mesh(struct wiphy * wiphy,struct net_device * dev,const struct mesh_config * conf,const struct mesh_setup * setup)2516 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2517 const struct mesh_config *conf,
2518 const struct mesh_setup *setup)
2519 {
2520 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2521 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2522 int err;
2523
2524 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2525 err = copy_mesh_setup(ifmsh, setup);
2526 if (err)
2527 return err;
2528
2529 sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2530
2531 /* can mesh use other SMPS modes? */
2532 sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2533 sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2534
2535 mutex_lock(&sdata->local->mtx);
2536 err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef,
2537 IEEE80211_CHANCTX_SHARED);
2538 mutex_unlock(&sdata->local->mtx);
2539 if (err)
2540 return err;
2541
2542 return ieee80211_start_mesh(sdata);
2543 }
2544
ieee80211_leave_mesh(struct wiphy * wiphy,struct net_device * dev)2545 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2546 {
2547 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2548
2549 ieee80211_stop_mesh(sdata);
2550 mutex_lock(&sdata->local->mtx);
2551 ieee80211_link_release_channel(&sdata->deflink);
2552 kfree(sdata->u.mesh.ie);
2553 mutex_unlock(&sdata->local->mtx);
2554
2555 return 0;
2556 }
2557 #endif
2558
ieee80211_change_bss(struct wiphy * wiphy,struct net_device * dev,struct bss_parameters * params)2559 static int ieee80211_change_bss(struct wiphy *wiphy,
2560 struct net_device *dev,
2561 struct bss_parameters *params)
2562 {
2563 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2564 struct ieee80211_supported_band *sband;
2565 u32 changed = 0;
2566
2567 if (!sdata_dereference(sdata->deflink.u.ap.beacon, sdata))
2568 return -ENOENT;
2569
2570 sband = ieee80211_get_sband(sdata);
2571 if (!sband)
2572 return -EINVAL;
2573
2574 if (params->use_cts_prot >= 0) {
2575 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2576 changed |= BSS_CHANGED_ERP_CTS_PROT;
2577 }
2578 if (params->use_short_preamble >= 0) {
2579 sdata->vif.bss_conf.use_short_preamble =
2580 params->use_short_preamble;
2581 changed |= BSS_CHANGED_ERP_PREAMBLE;
2582 }
2583
2584 if (!sdata->vif.bss_conf.use_short_slot &&
2585 (sband->band == NL80211_BAND_5GHZ ||
2586 sband->band == NL80211_BAND_6GHZ)) {
2587 sdata->vif.bss_conf.use_short_slot = true;
2588 changed |= BSS_CHANGED_ERP_SLOT;
2589 }
2590
2591 if (params->use_short_slot_time >= 0) {
2592 sdata->vif.bss_conf.use_short_slot =
2593 params->use_short_slot_time;
2594 changed |= BSS_CHANGED_ERP_SLOT;
2595 }
2596
2597 if (params->basic_rates) {
2598 ieee80211_parse_bitrates(sdata->vif.bss_conf.chandef.width,
2599 wiphy->bands[sband->band],
2600 params->basic_rates,
2601 params->basic_rates_len,
2602 &sdata->vif.bss_conf.basic_rates);
2603 changed |= BSS_CHANGED_BASIC_RATES;
2604 ieee80211_check_rate_mask(&sdata->deflink);
2605 }
2606
2607 if (params->ap_isolate >= 0) {
2608 if (params->ap_isolate)
2609 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2610 else
2611 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2612 ieee80211_check_fast_rx_iface(sdata);
2613 }
2614
2615 if (params->ht_opmode >= 0) {
2616 sdata->vif.bss_conf.ht_operation_mode =
2617 (u16) params->ht_opmode;
2618 changed |= BSS_CHANGED_HT;
2619 }
2620
2621 if (params->p2p_ctwindow >= 0) {
2622 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2623 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2624 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2625 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2626 changed |= BSS_CHANGED_P2P_PS;
2627 }
2628
2629 if (params->p2p_opp_ps > 0) {
2630 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2631 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2632 changed |= BSS_CHANGED_P2P_PS;
2633 } else if (params->p2p_opp_ps == 0) {
2634 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2635 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2636 changed |= BSS_CHANGED_P2P_PS;
2637 }
2638
2639 ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
2640
2641 return 0;
2642 }
2643
ieee80211_set_txq_params(struct wiphy * wiphy,struct net_device * dev,struct ieee80211_txq_params * params)2644 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2645 struct net_device *dev,
2646 struct ieee80211_txq_params *params)
2647 {
2648 struct ieee80211_local *local = wiphy_priv(wiphy);
2649 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2650 struct ieee80211_link_data *link =
2651 ieee80211_link_or_deflink(sdata, params->link_id, true);
2652 struct ieee80211_tx_queue_params p;
2653
2654 if (!local->ops->conf_tx)
2655 return -EOPNOTSUPP;
2656
2657 if (local->hw.queues < IEEE80211_NUM_ACS)
2658 return -EOPNOTSUPP;
2659
2660 if (IS_ERR(link))
2661 return PTR_ERR(link);
2662
2663 memset(&p, 0, sizeof(p));
2664 p.aifs = params->aifs;
2665 p.cw_max = params->cwmax;
2666 p.cw_min = params->cwmin;
2667 p.txop = params->txop;
2668
2669 /*
2670 * Setting tx queue params disables u-apsd because it's only
2671 * called in master mode.
2672 */
2673 p.uapsd = false;
2674
2675 ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2676
2677 link->tx_conf[params->ac] = p;
2678 if (drv_conf_tx(local, link, params->ac, &p)) {
2679 wiphy_debug(local->hw.wiphy,
2680 "failed to set TX queue parameters for AC %d\n",
2681 params->ac);
2682 return -EINVAL;
2683 }
2684
2685 ieee80211_link_info_change_notify(sdata, link,
2686 BSS_CHANGED_QOS);
2687
2688 return 0;
2689 }
2690
2691 #ifdef CONFIG_PM
ieee80211_suspend(struct wiphy * wiphy,struct cfg80211_wowlan * wowlan)2692 static int ieee80211_suspend(struct wiphy *wiphy,
2693 struct cfg80211_wowlan *wowlan)
2694 {
2695 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2696 }
2697
ieee80211_resume(struct wiphy * wiphy)2698 static int ieee80211_resume(struct wiphy *wiphy)
2699 {
2700 return __ieee80211_resume(wiphy_priv(wiphy));
2701 }
2702 #else
2703 #define ieee80211_suspend NULL
2704 #define ieee80211_resume NULL
2705 #endif
2706
ieee80211_scan(struct wiphy * wiphy,struct cfg80211_scan_request * req)2707 static int ieee80211_scan(struct wiphy *wiphy,
2708 struct cfg80211_scan_request *req)
2709 {
2710 struct ieee80211_sub_if_data *sdata;
2711
2712 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2713
2714 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2715 case NL80211_IFTYPE_STATION:
2716 case NL80211_IFTYPE_ADHOC:
2717 case NL80211_IFTYPE_MESH_POINT:
2718 case NL80211_IFTYPE_P2P_CLIENT:
2719 case NL80211_IFTYPE_P2P_DEVICE:
2720 break;
2721 case NL80211_IFTYPE_P2P_GO:
2722 if (sdata->local->ops->hw_scan)
2723 break;
2724 /*
2725 * FIXME: implement NoA while scanning in software,
2726 * for now fall through to allow scanning only when
2727 * beaconing hasn't been configured yet
2728 */
2729 fallthrough;
2730 case NL80211_IFTYPE_AP:
2731 /*
2732 * If the scan has been forced (and the driver supports
2733 * forcing), don't care about being beaconing already.
2734 * This will create problems to the attached stations (e.g. all
2735 * the frames sent while scanning on other channel will be
2736 * lost)
2737 */
2738 if (sdata->deflink.u.ap.beacon &&
2739 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2740 !(req->flags & NL80211_SCAN_FLAG_AP)))
2741 return -EOPNOTSUPP;
2742 break;
2743 case NL80211_IFTYPE_NAN:
2744 default:
2745 return -EOPNOTSUPP;
2746 }
2747
2748 return ieee80211_request_scan(sdata, req);
2749 }
2750
ieee80211_abort_scan(struct wiphy * wiphy,struct wireless_dev * wdev)2751 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2752 {
2753 ieee80211_scan_cancel(wiphy_priv(wiphy));
2754 }
2755
2756 static int
ieee80211_sched_scan_start(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_sched_scan_request * req)2757 ieee80211_sched_scan_start(struct wiphy *wiphy,
2758 struct net_device *dev,
2759 struct cfg80211_sched_scan_request *req)
2760 {
2761 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2762
2763 if (!sdata->local->ops->sched_scan_start)
2764 return -EOPNOTSUPP;
2765
2766 return ieee80211_request_sched_scan_start(sdata, req);
2767 }
2768
2769 static int
ieee80211_sched_scan_stop(struct wiphy * wiphy,struct net_device * dev,u64 reqid)2770 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2771 u64 reqid)
2772 {
2773 struct ieee80211_local *local = wiphy_priv(wiphy);
2774
2775 if (!local->ops->sched_scan_stop)
2776 return -EOPNOTSUPP;
2777
2778 return ieee80211_request_sched_scan_stop(local);
2779 }
2780
ieee80211_auth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_auth_request * req)2781 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2782 struct cfg80211_auth_request *req)
2783 {
2784 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2785 }
2786
ieee80211_assoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_assoc_request * req)2787 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2788 struct cfg80211_assoc_request *req)
2789 {
2790 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2791 }
2792
ieee80211_deauth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_deauth_request * req)2793 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2794 struct cfg80211_deauth_request *req)
2795 {
2796 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2797 }
2798
ieee80211_disassoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_disassoc_request * req)2799 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2800 struct cfg80211_disassoc_request *req)
2801 {
2802 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2803 }
2804
ieee80211_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2805 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2806 struct cfg80211_ibss_params *params)
2807 {
2808 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2809 }
2810
ieee80211_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2811 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2812 {
2813 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2814 }
2815
ieee80211_join_ocb(struct wiphy * wiphy,struct net_device * dev,struct ocb_setup * setup)2816 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2817 struct ocb_setup *setup)
2818 {
2819 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2820 }
2821
ieee80211_leave_ocb(struct wiphy * wiphy,struct net_device * dev)2822 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2823 {
2824 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2825 }
2826
ieee80211_set_mcast_rate(struct wiphy * wiphy,struct net_device * dev,int rate[NUM_NL80211_BANDS])2827 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2828 int rate[NUM_NL80211_BANDS])
2829 {
2830 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2831
2832 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2833 sizeof(int) * NUM_NL80211_BANDS);
2834
2835 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2836 BSS_CHANGED_MCAST_RATE);
2837
2838 return 0;
2839 }
2840
ieee80211_set_wiphy_params(struct wiphy * wiphy,u32 changed)2841 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2842 {
2843 struct ieee80211_local *local = wiphy_priv(wiphy);
2844 int err;
2845
2846 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2847 ieee80211_check_fast_xmit_all(local);
2848
2849 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2850
2851 if (err) {
2852 ieee80211_check_fast_xmit_all(local);
2853 return err;
2854 }
2855 }
2856
2857 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2858 (changed & WIPHY_PARAM_DYN_ACK)) {
2859 s16 coverage_class;
2860
2861 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2862 wiphy->coverage_class : -1;
2863 err = drv_set_coverage_class(local, coverage_class);
2864
2865 if (err)
2866 return err;
2867 }
2868
2869 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2870 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2871
2872 if (err)
2873 return err;
2874 }
2875
2876 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2877 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2878 return -EINVAL;
2879 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2880 }
2881 if (changed & WIPHY_PARAM_RETRY_LONG) {
2882 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2883 return -EINVAL;
2884 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2885 }
2886 if (changed &
2887 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2888 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2889
2890 if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2891 WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2892 WIPHY_PARAM_TXQ_QUANTUM))
2893 ieee80211_txq_set_params(local);
2894
2895 return 0;
2896 }
2897
ieee80211_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)2898 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2899 struct wireless_dev *wdev,
2900 enum nl80211_tx_power_setting type, int mbm)
2901 {
2902 struct ieee80211_local *local = wiphy_priv(wiphy);
2903 struct ieee80211_sub_if_data *sdata;
2904 enum nl80211_tx_power_setting txp_type = type;
2905 bool update_txp_type = false;
2906 bool has_monitor = false;
2907
2908 if (wdev) {
2909 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2910
2911 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2912 sdata = wiphy_dereference(local->hw.wiphy,
2913 local->monitor_sdata);
2914 if (!sdata)
2915 return -EOPNOTSUPP;
2916 }
2917
2918 switch (type) {
2919 case NL80211_TX_POWER_AUTOMATIC:
2920 sdata->deflink.user_power_level =
2921 IEEE80211_UNSET_POWER_LEVEL;
2922 txp_type = NL80211_TX_POWER_LIMITED;
2923 break;
2924 case NL80211_TX_POWER_LIMITED:
2925 case NL80211_TX_POWER_FIXED:
2926 if (mbm < 0 || (mbm % 100))
2927 return -EOPNOTSUPP;
2928 sdata->deflink.user_power_level = MBM_TO_DBM(mbm);
2929 break;
2930 }
2931
2932 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2933 update_txp_type = true;
2934 sdata->vif.bss_conf.txpower_type = txp_type;
2935 }
2936
2937 ieee80211_recalc_txpower(sdata, update_txp_type);
2938
2939 return 0;
2940 }
2941
2942 switch (type) {
2943 case NL80211_TX_POWER_AUTOMATIC:
2944 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2945 txp_type = NL80211_TX_POWER_LIMITED;
2946 break;
2947 case NL80211_TX_POWER_LIMITED:
2948 case NL80211_TX_POWER_FIXED:
2949 if (mbm < 0 || (mbm % 100))
2950 return -EOPNOTSUPP;
2951 local->user_power_level = MBM_TO_DBM(mbm);
2952 break;
2953 }
2954
2955 mutex_lock(&local->iflist_mtx);
2956 list_for_each_entry(sdata, &local->interfaces, list) {
2957 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2958 has_monitor = true;
2959 continue;
2960 }
2961 sdata->deflink.user_power_level = local->user_power_level;
2962 if (txp_type != sdata->vif.bss_conf.txpower_type)
2963 update_txp_type = true;
2964 sdata->vif.bss_conf.txpower_type = txp_type;
2965 }
2966 list_for_each_entry(sdata, &local->interfaces, list) {
2967 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2968 continue;
2969 ieee80211_recalc_txpower(sdata, update_txp_type);
2970 }
2971 mutex_unlock(&local->iflist_mtx);
2972
2973 if (has_monitor) {
2974 sdata = wiphy_dereference(local->hw.wiphy,
2975 local->monitor_sdata);
2976 if (sdata) {
2977 sdata->deflink.user_power_level = local->user_power_level;
2978 if (txp_type != sdata->vif.bss_conf.txpower_type)
2979 update_txp_type = true;
2980 sdata->vif.bss_conf.txpower_type = txp_type;
2981
2982 ieee80211_recalc_txpower(sdata, update_txp_type);
2983 }
2984 }
2985
2986 return 0;
2987 }
2988
ieee80211_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)2989 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2990 struct wireless_dev *wdev,
2991 int *dbm)
2992 {
2993 struct ieee80211_local *local = wiphy_priv(wiphy);
2994 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2995
2996 if (local->ops->get_txpower)
2997 return drv_get_txpower(local, sdata, dbm);
2998
2999 if (!local->use_chanctx)
3000 *dbm = local->hw.conf.power_level;
3001 else
3002 *dbm = sdata->vif.bss_conf.txpower;
3003
3004 return 0;
3005 }
3006
ieee80211_rfkill_poll(struct wiphy * wiphy)3007 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
3008 {
3009 struct ieee80211_local *local = wiphy_priv(wiphy);
3010
3011 drv_rfkill_poll(local);
3012 }
3013
3014 #ifdef CONFIG_NL80211_TESTMODE
ieee80211_testmode_cmd(struct wiphy * wiphy,struct wireless_dev * wdev,void * data,int len)3015 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3016 struct wireless_dev *wdev,
3017 void *data, int len)
3018 {
3019 struct ieee80211_local *local = wiphy_priv(wiphy);
3020 struct ieee80211_vif *vif = NULL;
3021
3022 if (!local->ops->testmode_cmd)
3023 return -EOPNOTSUPP;
3024
3025 if (wdev) {
3026 struct ieee80211_sub_if_data *sdata;
3027
3028 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3029 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3030 vif = &sdata->vif;
3031 }
3032
3033 return local->ops->testmode_cmd(&local->hw, vif, data, len);
3034 }
3035
ieee80211_testmode_dump(struct wiphy * wiphy,struct sk_buff * skb,struct netlink_callback * cb,void * data,int len)3036 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3037 struct sk_buff *skb,
3038 struct netlink_callback *cb,
3039 void *data, int len)
3040 {
3041 struct ieee80211_local *local = wiphy_priv(wiphy);
3042
3043 if (!local->ops->testmode_dump)
3044 return -EOPNOTSUPP;
3045
3046 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3047 }
3048 #endif
3049
__ieee80211_request_smps_mgd(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,enum ieee80211_smps_mode smps_mode)3050 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3051 struct ieee80211_link_data *link,
3052 enum ieee80211_smps_mode smps_mode)
3053 {
3054 const u8 *ap;
3055 enum ieee80211_smps_mode old_req;
3056 int err;
3057 struct sta_info *sta;
3058 bool tdls_peer_found = false;
3059
3060 lockdep_assert_held(&sdata->wdev.mtx);
3061
3062 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3063 return -EINVAL;
3064
3065 old_req = link->u.mgd.req_smps;
3066 link->u.mgd.req_smps = smps_mode;
3067
3068 if (old_req == smps_mode &&
3069 smps_mode != IEEE80211_SMPS_AUTOMATIC)
3070 return 0;
3071
3072 /*
3073 * If not associated, or current association is not an HT
3074 * association, there's no need to do anything, just store
3075 * the new value until we associate.
3076 */
3077 if (!sdata->u.mgd.associated ||
3078 link->conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
3079 return 0;
3080
3081 ap = link->u.mgd.bssid;
3082
3083 rcu_read_lock();
3084 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3085 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3086 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3087 continue;
3088
3089 tdls_peer_found = true;
3090 break;
3091 }
3092 rcu_read_unlock();
3093
3094 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3095 if (tdls_peer_found || !sdata->u.mgd.powersave)
3096 smps_mode = IEEE80211_SMPS_OFF;
3097 else
3098 smps_mode = IEEE80211_SMPS_DYNAMIC;
3099 }
3100
3101 /* send SM PS frame to AP */
3102 err = ieee80211_send_smps_action(sdata, smps_mode,
3103 ap, ap);
3104 if (err)
3105 link->u.mgd.req_smps = old_req;
3106 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3107 ieee80211_teardown_tdls_peers(sdata);
3108
3109 return err;
3110 }
3111
ieee80211_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)3112 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3113 bool enabled, int timeout)
3114 {
3115 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3116 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3117 unsigned int link_id;
3118
3119 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3120 return -EOPNOTSUPP;
3121
3122 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3123 return -EOPNOTSUPP;
3124
3125 if (enabled == sdata->u.mgd.powersave &&
3126 timeout == local->dynamic_ps_forced_timeout)
3127 return 0;
3128
3129 sdata->u.mgd.powersave = enabled;
3130 local->dynamic_ps_forced_timeout = timeout;
3131
3132 /* no change, but if automatic follow powersave */
3133 sdata_lock(sdata);
3134 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3135 struct ieee80211_link_data *link;
3136
3137 link = sdata_dereference(sdata->link[link_id], sdata);
3138
3139 if (!link)
3140 continue;
3141 __ieee80211_request_smps_mgd(sdata, link,
3142 link->u.mgd.req_smps);
3143 }
3144 sdata_unlock(sdata);
3145
3146 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3147 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
3148
3149 ieee80211_recalc_ps(local);
3150 ieee80211_recalc_ps_vif(sdata);
3151 ieee80211_check_fast_rx_iface(sdata);
3152
3153 return 0;
3154 }
3155
ieee80211_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)3156 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3157 struct net_device *dev,
3158 s32 rssi_thold, u32 rssi_hyst)
3159 {
3160 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3161 struct ieee80211_vif *vif = &sdata->vif;
3162 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3163
3164 if (rssi_thold == bss_conf->cqm_rssi_thold &&
3165 rssi_hyst == bss_conf->cqm_rssi_hyst)
3166 return 0;
3167
3168 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3169 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3170 return -EOPNOTSUPP;
3171
3172 bss_conf->cqm_rssi_thold = rssi_thold;
3173 bss_conf->cqm_rssi_hyst = rssi_hyst;
3174 bss_conf->cqm_rssi_low = 0;
3175 bss_conf->cqm_rssi_high = 0;
3176 sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3177
3178 /* tell the driver upon association, unless already associated */
3179 if (sdata->u.mgd.associated &&
3180 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3181 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3182 BSS_CHANGED_CQM);
3183
3184 return 0;
3185 }
3186
ieee80211_set_cqm_rssi_range_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_low,s32 rssi_high)3187 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3188 struct net_device *dev,
3189 s32 rssi_low, s32 rssi_high)
3190 {
3191 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3192 struct ieee80211_vif *vif = &sdata->vif;
3193 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3194
3195 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
3196 return -EOPNOTSUPP;
3197
3198 bss_conf->cqm_rssi_low = rssi_low;
3199 bss_conf->cqm_rssi_high = rssi_high;
3200 bss_conf->cqm_rssi_thold = 0;
3201 bss_conf->cqm_rssi_hyst = 0;
3202 sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3203
3204 /* tell the driver upon association, unless already associated */
3205 if (sdata->u.mgd.associated &&
3206 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3207 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3208 BSS_CHANGED_CQM);
3209
3210 return 0;
3211 }
3212
ieee80211_set_bitrate_mask(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id,const u8 * addr,const struct cfg80211_bitrate_mask * mask)3213 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3214 struct net_device *dev,
3215 unsigned int link_id,
3216 const u8 *addr,
3217 const struct cfg80211_bitrate_mask *mask)
3218 {
3219 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3220 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3221 int i, ret;
3222
3223 if (!ieee80211_sdata_running(sdata))
3224 return -ENETDOWN;
3225
3226 /*
3227 * If active validate the setting and reject it if it doesn't leave
3228 * at least one basic rate usable, since we really have to be able
3229 * to send something, and if we're an AP we have to be able to do
3230 * so at a basic rate so that all clients can receive it.
3231 */
3232 if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3233 sdata->vif.bss_conf.chandef.chan) {
3234 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3235 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
3236
3237 if (!(mask->control[band].legacy & basic_rates))
3238 return -EINVAL;
3239 }
3240
3241 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3242 ret = drv_set_bitrate_mask(local, sdata, mask);
3243 if (ret)
3244 return ret;
3245 }
3246
3247 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3248 struct ieee80211_supported_band *sband = wiphy->bands[i];
3249 int j;
3250
3251 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3252 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3253 sizeof(mask->control[i].ht_mcs));
3254 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3255 mask->control[i].vht_mcs,
3256 sizeof(mask->control[i].vht_mcs));
3257
3258 sdata->rc_has_mcs_mask[i] = false;
3259 sdata->rc_has_vht_mcs_mask[i] = false;
3260 if (!sband)
3261 continue;
3262
3263 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3264 if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3265 sdata->rc_has_mcs_mask[i] = true;
3266 break;
3267 }
3268 }
3269
3270 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3271 if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3272 sdata->rc_has_vht_mcs_mask[i] = true;
3273 break;
3274 }
3275 }
3276 }
3277
3278 return 0;
3279 }
3280
ieee80211_start_radar_detection(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_chan_def * chandef,u32 cac_time_ms)3281 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3282 struct net_device *dev,
3283 struct cfg80211_chan_def *chandef,
3284 u32 cac_time_ms)
3285 {
3286 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3287 struct ieee80211_local *local = sdata->local;
3288 int err;
3289
3290 mutex_lock(&local->mtx);
3291 if (!list_empty(&local->roc_list) || local->scanning) {
3292 err = -EBUSY;
3293 goto out_unlock;
3294 }
3295
3296 /* whatever, but channel contexts should not complain about that one */
3297 sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
3298 sdata->deflink.needed_rx_chains = local->rx_chains;
3299
3300 err = ieee80211_link_use_channel(&sdata->deflink, chandef,
3301 IEEE80211_CHANCTX_SHARED);
3302 if (err)
3303 goto out_unlock;
3304
3305 ieee80211_queue_delayed_work(&sdata->local->hw,
3306 &sdata->deflink.dfs_cac_timer_work,
3307 msecs_to_jiffies(cac_time_ms));
3308
3309 out_unlock:
3310 mutex_unlock(&local->mtx);
3311 return err;
3312 }
3313
ieee80211_end_cac(struct wiphy * wiphy,struct net_device * dev)3314 static void ieee80211_end_cac(struct wiphy *wiphy,
3315 struct net_device *dev)
3316 {
3317 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3318 struct ieee80211_local *local = sdata->local;
3319
3320 mutex_lock(&local->mtx);
3321 list_for_each_entry(sdata, &local->interfaces, list) {
3322 /* it might be waiting for the local->mtx, but then
3323 * by the time it gets it, sdata->wdev.cac_started
3324 * will no longer be true
3325 */
3326 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
3327
3328 if (sdata->wdev.cac_started) {
3329 ieee80211_link_release_channel(&sdata->deflink);
3330 sdata->wdev.cac_started = false;
3331 }
3332 }
3333 mutex_unlock(&local->mtx);
3334 }
3335
3336 static struct cfg80211_beacon_data *
cfg80211_beacon_dup(struct cfg80211_beacon_data * beacon)3337 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3338 {
3339 struct cfg80211_beacon_data *new_beacon;
3340 u8 *pos;
3341 int len;
3342
3343 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3344 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3345 beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len +
3346 ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies);
3347
3348 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3349 if (!new_beacon)
3350 return NULL;
3351
3352 if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3353 new_beacon->mbssid_ies =
3354 kzalloc(struct_size(new_beacon->mbssid_ies,
3355 elem, beacon->mbssid_ies->cnt),
3356 GFP_KERNEL);
3357 if (!new_beacon->mbssid_ies) {
3358 kfree(new_beacon);
3359 return NULL;
3360 }
3361 }
3362
3363 pos = (u8 *)(new_beacon + 1);
3364 if (beacon->head_len) {
3365 new_beacon->head_len = beacon->head_len;
3366 new_beacon->head = pos;
3367 memcpy(pos, beacon->head, beacon->head_len);
3368 pos += beacon->head_len;
3369 }
3370 if (beacon->tail_len) {
3371 new_beacon->tail_len = beacon->tail_len;
3372 new_beacon->tail = pos;
3373 memcpy(pos, beacon->tail, beacon->tail_len);
3374 pos += beacon->tail_len;
3375 }
3376 if (beacon->beacon_ies_len) {
3377 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3378 new_beacon->beacon_ies = pos;
3379 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3380 pos += beacon->beacon_ies_len;
3381 }
3382 if (beacon->proberesp_ies_len) {
3383 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3384 new_beacon->proberesp_ies = pos;
3385 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3386 pos += beacon->proberesp_ies_len;
3387 }
3388 if (beacon->assocresp_ies_len) {
3389 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3390 new_beacon->assocresp_ies = pos;
3391 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3392 pos += beacon->assocresp_ies_len;
3393 }
3394 if (beacon->probe_resp_len) {
3395 new_beacon->probe_resp_len = beacon->probe_resp_len;
3396 new_beacon->probe_resp = pos;
3397 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3398 pos += beacon->probe_resp_len;
3399 }
3400 if (beacon->mbssid_ies && beacon->mbssid_ies->cnt)
3401 pos += ieee80211_copy_mbssid_beacon(pos,
3402 new_beacon->mbssid_ies,
3403 beacon->mbssid_ies);
3404
3405 /* might copy -1, meaning no changes requested */
3406 new_beacon->ftm_responder = beacon->ftm_responder;
3407 if (beacon->lci) {
3408 new_beacon->lci_len = beacon->lci_len;
3409 new_beacon->lci = pos;
3410 memcpy(pos, beacon->lci, beacon->lci_len);
3411 pos += beacon->lci_len;
3412 }
3413 if (beacon->civicloc) {
3414 new_beacon->civicloc_len = beacon->civicloc_len;
3415 new_beacon->civicloc = pos;
3416 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3417 pos += beacon->civicloc_len;
3418 }
3419
3420 return new_beacon;
3421 }
3422
ieee80211_csa_finish(struct ieee80211_vif * vif)3423 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3424 {
3425 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3426 struct ieee80211_local *local = sdata->local;
3427
3428 rcu_read_lock();
3429
3430 if (vif->mbssid_tx_vif == vif) {
3431 /* Trigger ieee80211_csa_finish() on the non-transmitting
3432 * interfaces when channel switch is received on
3433 * transmitting interface
3434 */
3435 struct ieee80211_sub_if_data *iter;
3436
3437 list_for_each_entry_rcu(iter, &local->interfaces, list) {
3438 if (!ieee80211_sdata_running(iter))
3439 continue;
3440
3441 if (iter == sdata || iter->vif.mbssid_tx_vif != vif)
3442 continue;
3443
3444 ieee80211_queue_work(&iter->local->hw,
3445 &iter->deflink.csa_finalize_work);
3446 }
3447 }
3448 ieee80211_queue_work(&local->hw, &sdata->deflink.csa_finalize_work);
3449
3450 rcu_read_unlock();
3451 }
3452 EXPORT_SYMBOL(ieee80211_csa_finish);
3453
ieee80211_channel_switch_disconnect(struct ieee80211_vif * vif,bool block_tx)3454 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
3455 {
3456 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3457 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3458 struct ieee80211_local *local = sdata->local;
3459
3460 sdata->deflink.csa_block_tx = block_tx;
3461 sdata_info(sdata, "channel switch failed, disconnecting\n");
3462 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
3463 }
3464 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3465
ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data * sdata,u32 * changed)3466 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3467 u32 *changed)
3468 {
3469 int err;
3470
3471 switch (sdata->vif.type) {
3472 case NL80211_IFTYPE_AP:
3473 if (!sdata->deflink.u.ap.next_beacon)
3474 return -EINVAL;
3475
3476 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3477 sdata->deflink.u.ap.next_beacon,
3478 NULL, NULL);
3479 ieee80211_free_next_beacon(&sdata->deflink);
3480
3481 if (err < 0)
3482 return err;
3483 *changed |= err;
3484 break;
3485 case NL80211_IFTYPE_ADHOC:
3486 err = ieee80211_ibss_finish_csa(sdata);
3487 if (err < 0)
3488 return err;
3489 *changed |= err;
3490 break;
3491 #ifdef CONFIG_MAC80211_MESH
3492 case NL80211_IFTYPE_MESH_POINT:
3493 err = ieee80211_mesh_finish_csa(sdata);
3494 if (err < 0)
3495 return err;
3496 *changed |= err;
3497 break;
3498 #endif
3499 default:
3500 WARN_ON(1);
3501 return -EINVAL;
3502 }
3503
3504 return 0;
3505 }
3506
__ieee80211_csa_finalize(struct ieee80211_sub_if_data * sdata)3507 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3508 {
3509 struct ieee80211_local *local = sdata->local;
3510 u32 changed = 0;
3511 int err;
3512
3513 sdata_assert_lock(sdata);
3514 lockdep_assert_held(&local->mtx);
3515 lockdep_assert_held(&local->chanctx_mtx);
3516
3517 /*
3518 * using reservation isn't immediate as it may be deferred until later
3519 * with multi-vif. once reservation is complete it will re-schedule the
3520 * work with no reserved_chanctx so verify chandef to check if it
3521 * completed successfully
3522 */
3523
3524 if (sdata->deflink.reserved_chanctx) {
3525 /*
3526 * with multi-vif csa driver may call ieee80211_csa_finish()
3527 * many times while waiting for other interfaces to use their
3528 * reservations
3529 */
3530 if (sdata->deflink.reserved_ready)
3531 return 0;
3532
3533 return ieee80211_link_use_reserved_context(&sdata->deflink);
3534 }
3535
3536 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3537 &sdata->deflink.csa_chandef))
3538 return -EINVAL;
3539
3540 sdata->vif.bss_conf.csa_active = false;
3541
3542 err = ieee80211_set_after_csa_beacon(sdata, &changed);
3543 if (err)
3544 return err;
3545
3546 ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
3547
3548 if (sdata->deflink.csa_block_tx) {
3549 ieee80211_wake_vif_queues(local, sdata,
3550 IEEE80211_QUEUE_STOP_REASON_CSA);
3551 sdata->deflink.csa_block_tx = false;
3552 }
3553
3554 err = drv_post_channel_switch(sdata);
3555 if (err)
3556 return err;
3557
3558 cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0);
3559
3560 return 0;
3561 }
3562
ieee80211_csa_finalize(struct ieee80211_sub_if_data * sdata)3563 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3564 {
3565 if (__ieee80211_csa_finalize(sdata)) {
3566 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3567 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3568 GFP_KERNEL);
3569 }
3570 }
3571
ieee80211_csa_finalize_work(struct work_struct * work)3572 void ieee80211_csa_finalize_work(struct work_struct *work)
3573 {
3574 struct ieee80211_sub_if_data *sdata =
3575 container_of(work, struct ieee80211_sub_if_data,
3576 deflink.csa_finalize_work);
3577 struct ieee80211_local *local = sdata->local;
3578
3579 sdata_lock(sdata);
3580 mutex_lock(&local->mtx);
3581 mutex_lock(&local->chanctx_mtx);
3582
3583 /* AP might have been stopped while waiting for the lock. */
3584 if (!sdata->vif.bss_conf.csa_active)
3585 goto unlock;
3586
3587 if (!ieee80211_sdata_running(sdata))
3588 goto unlock;
3589
3590 ieee80211_csa_finalize(sdata);
3591
3592 unlock:
3593 mutex_unlock(&local->chanctx_mtx);
3594 mutex_unlock(&local->mtx);
3595 sdata_unlock(sdata);
3596 }
3597
ieee80211_set_csa_beacon(struct ieee80211_sub_if_data * sdata,struct cfg80211_csa_settings * params,u32 * changed)3598 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3599 struct cfg80211_csa_settings *params,
3600 u32 *changed)
3601 {
3602 struct ieee80211_csa_settings csa = {};
3603 int err;
3604
3605 switch (sdata->vif.type) {
3606 case NL80211_IFTYPE_AP:
3607 sdata->deflink.u.ap.next_beacon =
3608 cfg80211_beacon_dup(¶ms->beacon_after);
3609 if (!sdata->deflink.u.ap.next_beacon)
3610 return -ENOMEM;
3611
3612 /*
3613 * With a count of 0, we don't have to wait for any
3614 * TBTT before switching, so complete the CSA
3615 * immediately. In theory, with a count == 1 we
3616 * should delay the switch until just before the next
3617 * TBTT, but that would complicate things so we switch
3618 * immediately too. If we would delay the switch
3619 * until the next TBTT, we would have to set the probe
3620 * response here.
3621 *
3622 * TODO: A channel switch with count <= 1 without
3623 * sending a CSA action frame is kind of useless,
3624 * because the clients won't know we're changing
3625 * channels. The action frame must be implemented
3626 * either here or in the userspace.
3627 */
3628 if (params->count <= 1)
3629 break;
3630
3631 if ((params->n_counter_offsets_beacon >
3632 IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
3633 (params->n_counter_offsets_presp >
3634 IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
3635 ieee80211_free_next_beacon(&sdata->deflink);
3636 return -EINVAL;
3637 }
3638
3639 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3640 csa.counter_offsets_presp = params->counter_offsets_presp;
3641 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3642 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3643 csa.count = params->count;
3644
3645 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3646 ¶ms->beacon_csa, &csa,
3647 NULL);
3648 if (err < 0) {
3649 ieee80211_free_next_beacon(&sdata->deflink);
3650 return err;
3651 }
3652 *changed |= err;
3653
3654 break;
3655 case NL80211_IFTYPE_ADHOC:
3656 if (!sdata->vif.cfg.ibss_joined)
3657 return -EINVAL;
3658
3659 if (params->chandef.width != sdata->u.ibss.chandef.width)
3660 return -EINVAL;
3661
3662 switch (params->chandef.width) {
3663 case NL80211_CHAN_WIDTH_40:
3664 if (cfg80211_get_chandef_type(¶ms->chandef) !=
3665 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3666 return -EINVAL;
3667 break;
3668 case NL80211_CHAN_WIDTH_5:
3669 case NL80211_CHAN_WIDTH_10:
3670 case NL80211_CHAN_WIDTH_20_NOHT:
3671 case NL80211_CHAN_WIDTH_20:
3672 break;
3673 default:
3674 return -EINVAL;
3675 }
3676
3677 /* changes into another band are not supported */
3678 if (sdata->u.ibss.chandef.chan->band !=
3679 params->chandef.chan->band)
3680 return -EINVAL;
3681
3682 /* see comments in the NL80211_IFTYPE_AP block */
3683 if (params->count > 1) {
3684 err = ieee80211_ibss_csa_beacon(sdata, params);
3685 if (err < 0)
3686 return err;
3687 *changed |= err;
3688 }
3689
3690 ieee80211_send_action_csa(sdata, params);
3691
3692 break;
3693 #ifdef CONFIG_MAC80211_MESH
3694 case NL80211_IFTYPE_MESH_POINT: {
3695 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3696
3697 /* changes into another band are not supported */
3698 if (sdata->vif.bss_conf.chandef.chan->band !=
3699 params->chandef.chan->band)
3700 return -EINVAL;
3701
3702 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3703 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3704 if (!ifmsh->pre_value)
3705 ifmsh->pre_value = 1;
3706 else
3707 ifmsh->pre_value++;
3708 }
3709
3710 /* see comments in the NL80211_IFTYPE_AP block */
3711 if (params->count > 1) {
3712 err = ieee80211_mesh_csa_beacon(sdata, params);
3713 if (err < 0) {
3714 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3715 return err;
3716 }
3717 *changed |= err;
3718 }
3719
3720 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3721 ieee80211_send_action_csa(sdata, params);
3722
3723 break;
3724 }
3725 #endif
3726 default:
3727 return -EOPNOTSUPP;
3728 }
3729
3730 return 0;
3731 }
3732
ieee80211_color_change_abort(struct ieee80211_sub_if_data * sdata)3733 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data *sdata)
3734 {
3735 sdata->vif.bss_conf.color_change_active = false;
3736
3737 ieee80211_free_next_beacon(&sdata->deflink);
3738
3739 cfg80211_color_change_aborted_notify(sdata->dev);
3740 }
3741
3742 static int
__ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)3743 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3744 struct cfg80211_csa_settings *params)
3745 {
3746 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3747 struct ieee80211_local *local = sdata->local;
3748 struct ieee80211_channel_switch ch_switch;
3749 struct ieee80211_chanctx_conf *conf;
3750 struct ieee80211_chanctx *chanctx;
3751 u32 changed = 0;
3752 int err;
3753
3754 sdata_assert_lock(sdata);
3755 lockdep_assert_held(&local->mtx);
3756
3757 if (!list_empty(&local->roc_list) || local->scanning)
3758 return -EBUSY;
3759
3760 if (sdata->wdev.cac_started)
3761 return -EBUSY;
3762
3763 if (cfg80211_chandef_identical(¶ms->chandef,
3764 &sdata->vif.bss_conf.chandef))
3765 return -EINVAL;
3766
3767 /* don't allow another channel switch if one is already active. */
3768 if (sdata->vif.bss_conf.csa_active)
3769 return -EBUSY;
3770
3771 mutex_lock(&local->chanctx_mtx);
3772 conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf,
3773 lockdep_is_held(&local->chanctx_mtx));
3774 if (!conf) {
3775 err = -EBUSY;
3776 goto out;
3777 }
3778
3779 if (params->chandef.chan->freq_offset) {
3780 /* this may work, but is untested */
3781 err = -EOPNOTSUPP;
3782 goto out;
3783 }
3784
3785 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3786
3787 ch_switch.timestamp = 0;
3788 ch_switch.device_timestamp = 0;
3789 ch_switch.block_tx = params->block_tx;
3790 ch_switch.chandef = params->chandef;
3791 ch_switch.count = params->count;
3792
3793 err = drv_pre_channel_switch(sdata, &ch_switch);
3794 if (err)
3795 goto out;
3796
3797 err = ieee80211_link_reserve_chanctx(&sdata->deflink, ¶ms->chandef,
3798 chanctx->mode,
3799 params->radar_required);
3800 if (err)
3801 goto out;
3802
3803 /* if reservation is invalid then this will fail */
3804 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3805 if (err) {
3806 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3807 goto out;
3808 }
3809
3810 /* if there is a color change in progress, abort it */
3811 if (sdata->vif.bss_conf.color_change_active)
3812 ieee80211_color_change_abort(sdata);
3813
3814 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3815 if (err) {
3816 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3817 goto out;
3818 }
3819
3820 sdata->deflink.csa_chandef = params->chandef;
3821 sdata->deflink.csa_block_tx = params->block_tx;
3822 sdata->vif.bss_conf.csa_active = true;
3823
3824 if (sdata->deflink.csa_block_tx)
3825 ieee80211_stop_vif_queues(local, sdata,
3826 IEEE80211_QUEUE_STOP_REASON_CSA);
3827
3828 cfg80211_ch_switch_started_notify(sdata->dev,
3829 &sdata->deflink.csa_chandef, 0,
3830 params->count, params->block_tx);
3831
3832 if (changed) {
3833 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3834 changed);
3835 drv_channel_switch_beacon(sdata, ¶ms->chandef);
3836 } else {
3837 /* if the beacon didn't change, we can finalize immediately */
3838 ieee80211_csa_finalize(sdata);
3839 }
3840
3841 out:
3842 mutex_unlock(&local->chanctx_mtx);
3843 return err;
3844 }
3845
ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)3846 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3847 struct cfg80211_csa_settings *params)
3848 {
3849 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3850 struct ieee80211_local *local = sdata->local;
3851 int err;
3852
3853 mutex_lock(&local->mtx);
3854 err = __ieee80211_channel_switch(wiphy, dev, params);
3855 mutex_unlock(&local->mtx);
3856
3857 return err;
3858 }
3859
ieee80211_mgmt_tx_cookie(struct ieee80211_local * local)3860 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3861 {
3862 lockdep_assert_held(&local->mtx);
3863
3864 local->roc_cookie_counter++;
3865
3866 /* wow, you wrapped 64 bits ... more likely a bug */
3867 if (WARN_ON(local->roc_cookie_counter == 0))
3868 local->roc_cookie_counter++;
3869
3870 return local->roc_cookie_counter;
3871 }
3872
ieee80211_attach_ack_skb(struct ieee80211_local * local,struct sk_buff * skb,u64 * cookie,gfp_t gfp)3873 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3874 u64 *cookie, gfp_t gfp)
3875 {
3876 unsigned long spin_flags;
3877 struct sk_buff *ack_skb;
3878 int id;
3879
3880 ack_skb = skb_copy(skb, gfp);
3881 if (!ack_skb)
3882 return -ENOMEM;
3883
3884 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3885 id = idr_alloc(&local->ack_status_frames, ack_skb,
3886 1, 0x2000, GFP_ATOMIC);
3887 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3888
3889 if (id < 0) {
3890 kfree_skb(ack_skb);
3891 return -ENOMEM;
3892 }
3893
3894 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3895
3896 *cookie = ieee80211_mgmt_tx_cookie(local);
3897 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3898
3899 return 0;
3900 }
3901
3902 static void
ieee80211_update_mgmt_frame_registrations(struct wiphy * wiphy,struct wireless_dev * wdev,struct mgmt_frame_regs * upd)3903 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
3904 struct wireless_dev *wdev,
3905 struct mgmt_frame_regs *upd)
3906 {
3907 struct ieee80211_local *local = wiphy_priv(wiphy);
3908 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3909 u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
3910 u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
3911 bool global_change, intf_change;
3912
3913 global_change =
3914 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
3915 (local->rx_mcast_action_reg !=
3916 !!(upd->global_mcast_stypes & action_mask));
3917 local->probe_req_reg = upd->global_stypes & preq_mask;
3918 local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
3919
3920 intf_change = (sdata->vif.probe_req_reg !=
3921 !!(upd->interface_stypes & preq_mask)) ||
3922 (sdata->vif.rx_mcast_action_reg !=
3923 !!(upd->interface_mcast_stypes & action_mask));
3924 sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
3925 sdata->vif.rx_mcast_action_reg =
3926 upd->interface_mcast_stypes & action_mask;
3927
3928 if (!local->open_count)
3929 return;
3930
3931 if (intf_change && ieee80211_sdata_running(sdata))
3932 drv_config_iface_filter(local, sdata,
3933 sdata->vif.probe_req_reg ?
3934 FIF_PROBE_REQ : 0,
3935 FIF_PROBE_REQ);
3936
3937 if (global_change)
3938 ieee80211_configure_filter(local);
3939 }
3940
ieee80211_set_antenna(struct wiphy * wiphy,u32 tx_ant,u32 rx_ant)3941 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3942 {
3943 struct ieee80211_local *local = wiphy_priv(wiphy);
3944
3945 if (local->started)
3946 return -EOPNOTSUPP;
3947
3948 return drv_set_antenna(local, tx_ant, rx_ant);
3949 }
3950
ieee80211_get_antenna(struct wiphy * wiphy,u32 * tx_ant,u32 * rx_ant)3951 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3952 {
3953 struct ieee80211_local *local = wiphy_priv(wiphy);
3954
3955 return drv_get_antenna(local, tx_ant, rx_ant);
3956 }
3957
ieee80211_set_rekey_data(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_gtk_rekey_data * data)3958 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3959 struct net_device *dev,
3960 struct cfg80211_gtk_rekey_data *data)
3961 {
3962 struct ieee80211_local *local = wiphy_priv(wiphy);
3963 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3964
3965 if (!local->ops->set_rekey_data)
3966 return -EOPNOTSUPP;
3967
3968 drv_set_rekey_data(local, sdata, data);
3969
3970 return 0;
3971 }
3972
ieee80211_probe_client(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u64 * cookie)3973 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3974 const u8 *peer, u64 *cookie)
3975 {
3976 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3977 struct ieee80211_local *local = sdata->local;
3978 struct ieee80211_qos_hdr *nullfunc;
3979 struct sk_buff *skb;
3980 int size = sizeof(*nullfunc);
3981 __le16 fc;
3982 bool qos;
3983 struct ieee80211_tx_info *info;
3984 struct sta_info *sta;
3985 struct ieee80211_chanctx_conf *chanctx_conf;
3986 enum nl80211_band band;
3987 int ret;
3988
3989 /* the lock is needed to assign the cookie later */
3990 mutex_lock(&local->mtx);
3991
3992 rcu_read_lock();
3993 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
3994 if (WARN_ON(!chanctx_conf)) {
3995 ret = -EINVAL;
3996 goto unlock;
3997 }
3998 band = chanctx_conf->def.chan->band;
3999 sta = sta_info_get_bss(sdata, peer);
4000 if (sta) {
4001 qos = sta->sta.wme;
4002 } else {
4003 ret = -ENOLINK;
4004 goto unlock;
4005 }
4006
4007 if (qos) {
4008 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4009 IEEE80211_STYPE_QOS_NULLFUNC |
4010 IEEE80211_FCTL_FROMDS);
4011 } else {
4012 size -= 2;
4013 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4014 IEEE80211_STYPE_NULLFUNC |
4015 IEEE80211_FCTL_FROMDS);
4016 }
4017
4018 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4019 if (!skb) {
4020 ret = -ENOMEM;
4021 goto unlock;
4022 }
4023
4024 skb->dev = dev;
4025
4026 skb_reserve(skb, local->hw.extra_tx_headroom);
4027
4028 nullfunc = skb_put(skb, size);
4029 nullfunc->frame_control = fc;
4030 nullfunc->duration_id = 0;
4031 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4032 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4033 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4034 nullfunc->seq_ctrl = 0;
4035
4036 info = IEEE80211_SKB_CB(skb);
4037
4038 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4039 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4040 info->band = band;
4041
4042 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4043 skb->priority = 7;
4044 if (qos)
4045 nullfunc->qos_ctrl = cpu_to_le16(7);
4046
4047 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4048 if (ret) {
4049 kfree_skb(skb);
4050 goto unlock;
4051 }
4052
4053 local_bh_disable();
4054 ieee80211_xmit(sdata, sta, skb);
4055 local_bh_enable();
4056
4057 ret = 0;
4058 unlock:
4059 rcu_read_unlock();
4060 mutex_unlock(&local->mtx);
4061
4062 return ret;
4063 }
4064
ieee80211_cfg_get_channel(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id,struct cfg80211_chan_def * chandef)4065 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4066 struct wireless_dev *wdev,
4067 unsigned int link_id,
4068 struct cfg80211_chan_def *chandef)
4069 {
4070 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4071 struct ieee80211_local *local = wiphy_priv(wiphy);
4072 struct ieee80211_chanctx_conf *chanctx_conf;
4073 struct ieee80211_link_data *link;
4074 int ret = -ENODATA;
4075
4076 rcu_read_lock();
4077 link = rcu_dereference(sdata->link[link_id]);
4078 if (!link) {
4079 ret = -ENOLINK;
4080 goto out;
4081 }
4082
4083 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4084 if (chanctx_conf) {
4085 *chandef = link->conf->chandef;
4086 ret = 0;
4087 } else if (local->open_count > 0 &&
4088 local->open_count == local->monitors &&
4089 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4090 if (local->use_chanctx)
4091 *chandef = local->monitor_chandef;
4092 else
4093 *chandef = local->_oper_chandef;
4094 ret = 0;
4095 }
4096 out:
4097 rcu_read_unlock();
4098
4099 return ret;
4100 }
4101
4102 #ifdef CONFIG_PM
ieee80211_set_wakeup(struct wiphy * wiphy,bool enabled)4103 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4104 {
4105 drv_set_wakeup(wiphy_priv(wiphy), enabled);
4106 }
4107 #endif
4108
ieee80211_set_qos_map(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_qos_map * qos_map)4109 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4110 struct net_device *dev,
4111 struct cfg80211_qos_map *qos_map)
4112 {
4113 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4114 struct mac80211_qos_map *new_qos_map, *old_qos_map;
4115
4116 if (qos_map) {
4117 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4118 if (!new_qos_map)
4119 return -ENOMEM;
4120 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4121 } else {
4122 /* A NULL qos_map was passed to disable QoS mapping */
4123 new_qos_map = NULL;
4124 }
4125
4126 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4127 rcu_assign_pointer(sdata->qos_map, new_qos_map);
4128 if (old_qos_map)
4129 kfree_rcu(old_qos_map, rcu_head);
4130
4131 return 0;
4132 }
4133
ieee80211_set_ap_chanwidth(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id,struct cfg80211_chan_def * chandef)4134 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4135 struct net_device *dev,
4136 unsigned int link_id,
4137 struct cfg80211_chan_def *chandef)
4138 {
4139 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4140 struct ieee80211_link_data *link;
4141 int ret;
4142 u32 changed = 0;
4143
4144 link = sdata_dereference(sdata->link[link_id], sdata);
4145
4146 ret = ieee80211_link_change_bandwidth(link, chandef, &changed);
4147 if (ret == 0)
4148 ieee80211_link_info_change_notify(sdata, link, changed);
4149
4150 return ret;
4151 }
4152
ieee80211_add_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer,u8 up,u16 admitted_time)4153 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4154 u8 tsid, const u8 *peer, u8 up,
4155 u16 admitted_time)
4156 {
4157 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4158 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4159 int ac = ieee802_1d_to_ac[up];
4160
4161 if (sdata->vif.type != NL80211_IFTYPE_STATION)
4162 return -EOPNOTSUPP;
4163
4164 if (!(sdata->wmm_acm & BIT(up)))
4165 return -EINVAL;
4166
4167 if (ifmgd->tx_tspec[ac].admitted_time)
4168 return -EBUSY;
4169
4170 if (admitted_time) {
4171 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4172 ifmgd->tx_tspec[ac].tsid = tsid;
4173 ifmgd->tx_tspec[ac].up = up;
4174 }
4175
4176 return 0;
4177 }
4178
ieee80211_del_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer)4179 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4180 u8 tsid, const u8 *peer)
4181 {
4182 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4183 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4184 struct ieee80211_local *local = wiphy_priv(wiphy);
4185 int ac;
4186
4187 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4188 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4189
4190 /* skip unused entries */
4191 if (!tx_tspec->admitted_time)
4192 continue;
4193
4194 if (tx_tspec->tsid != tsid)
4195 continue;
4196
4197 /* due to this new packets will be reassigned to non-ACM ACs */
4198 tx_tspec->up = -1;
4199
4200 /* Make sure that all packets have been sent to avoid to
4201 * restore the QoS params on packets that are still on the
4202 * queues.
4203 */
4204 synchronize_net();
4205 ieee80211_flush_queues(local, sdata, false);
4206
4207 /* restore the normal QoS parameters
4208 * (unconditionally to avoid races)
4209 */
4210 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4211 tx_tspec->downgraded = false;
4212 ieee80211_sta_handle_tspec_ac_params(sdata);
4213
4214 /* finally clear all the data */
4215 memset(tx_tspec, 0, sizeof(*tx_tspec));
4216
4217 return 0;
4218 }
4219
4220 return -ENOENT;
4221 }
4222
ieee80211_nan_func_terminated(struct ieee80211_vif * vif,u8 inst_id,enum nl80211_nan_func_term_reason reason,gfp_t gfp)4223 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4224 u8 inst_id,
4225 enum nl80211_nan_func_term_reason reason,
4226 gfp_t gfp)
4227 {
4228 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4229 struct cfg80211_nan_func *func;
4230 u64 cookie;
4231
4232 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4233 return;
4234
4235 spin_lock_bh(&sdata->u.nan.func_lock);
4236
4237 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4238 if (WARN_ON(!func)) {
4239 spin_unlock_bh(&sdata->u.nan.func_lock);
4240 return;
4241 }
4242
4243 cookie = func->cookie;
4244 idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4245
4246 spin_unlock_bh(&sdata->u.nan.func_lock);
4247
4248 cfg80211_free_nan_func(func);
4249
4250 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4251 reason, cookie, gfp);
4252 }
4253 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4254
ieee80211_nan_func_match(struct ieee80211_vif * vif,struct cfg80211_nan_match_params * match,gfp_t gfp)4255 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4256 struct cfg80211_nan_match_params *match,
4257 gfp_t gfp)
4258 {
4259 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4260 struct cfg80211_nan_func *func;
4261
4262 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4263 return;
4264
4265 spin_lock_bh(&sdata->u.nan.func_lock);
4266
4267 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id);
4268 if (WARN_ON(!func)) {
4269 spin_unlock_bh(&sdata->u.nan.func_lock);
4270 return;
4271 }
4272 match->cookie = func->cookie;
4273
4274 spin_unlock_bh(&sdata->u.nan.func_lock);
4275
4276 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4277 }
4278 EXPORT_SYMBOL(ieee80211_nan_func_match);
4279
ieee80211_set_multicast_to_unicast(struct wiphy * wiphy,struct net_device * dev,const bool enabled)4280 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4281 struct net_device *dev,
4282 const bool enabled)
4283 {
4284 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4285
4286 sdata->u.ap.multicast_to_unicast = enabled;
4287
4288 return 0;
4289 }
4290
ieee80211_fill_txq_stats(struct cfg80211_txq_stats * txqstats,struct txq_info * txqi)4291 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4292 struct txq_info *txqi)
4293 {
4294 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4295 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4296 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4297 }
4298
4299 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4300 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4301 txqstats->backlog_packets = txqi->tin.backlog_packets;
4302 }
4303
4304 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4305 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4306 txqstats->flows = txqi->tin.flows;
4307 }
4308
4309 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4310 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4311 txqstats->drops = txqi->cstats.drop_count;
4312 }
4313
4314 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4315 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4316 txqstats->ecn_marks = txqi->cstats.ecn_mark;
4317 }
4318
4319 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4320 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4321 txqstats->overlimit = txqi->tin.overlimit;
4322 }
4323
4324 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4325 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4326 txqstats->collisions = txqi->tin.collisions;
4327 }
4328
4329 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4330 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4331 txqstats->tx_bytes = txqi->tin.tx_bytes;
4332 }
4333
4334 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4335 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4336 txqstats->tx_packets = txqi->tin.tx_packets;
4337 }
4338 }
4339
ieee80211_get_txq_stats(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_txq_stats * txqstats)4340 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4341 struct wireless_dev *wdev,
4342 struct cfg80211_txq_stats *txqstats)
4343 {
4344 struct ieee80211_local *local = wiphy_priv(wiphy);
4345 struct ieee80211_sub_if_data *sdata;
4346 int ret = 0;
4347
4348 if (!local->ops->wake_tx_queue)
4349 return 1;
4350
4351 spin_lock_bh(&local->fq.lock);
4352 rcu_read_lock();
4353
4354 if (wdev) {
4355 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4356 if (!sdata->vif.txq) {
4357 ret = 1;
4358 goto out;
4359 }
4360 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4361 } else {
4362 /* phy stats */
4363 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4364 BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4365 BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4366 BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4367 BIT(NL80211_TXQ_STATS_COLLISIONS) |
4368 BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4369 txqstats->backlog_packets = local->fq.backlog;
4370 txqstats->backlog_bytes = local->fq.memory_usage;
4371 txqstats->overlimit = local->fq.overlimit;
4372 txqstats->overmemory = local->fq.overmemory;
4373 txqstats->collisions = local->fq.collisions;
4374 txqstats->max_flows = local->fq.flows_cnt;
4375 }
4376
4377 out:
4378 rcu_read_unlock();
4379 spin_unlock_bh(&local->fq.lock);
4380
4381 return ret;
4382 }
4383
4384 static int
ieee80211_get_ftm_responder_stats(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ftm_responder_stats * ftm_stats)4385 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4386 struct net_device *dev,
4387 struct cfg80211_ftm_responder_stats *ftm_stats)
4388 {
4389 struct ieee80211_local *local = wiphy_priv(wiphy);
4390 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4391
4392 return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4393 }
4394
4395 static int
ieee80211_start_pmsr(struct wiphy * wiphy,struct wireless_dev * dev,struct cfg80211_pmsr_request * request)4396 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4397 struct cfg80211_pmsr_request *request)
4398 {
4399 struct ieee80211_local *local = wiphy_priv(wiphy);
4400 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4401
4402 return drv_start_pmsr(local, sdata, request);
4403 }
4404
4405 static void
ieee80211_abort_pmsr(struct wiphy * wiphy,struct wireless_dev * dev,struct cfg80211_pmsr_request * request)4406 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4407 struct cfg80211_pmsr_request *request)
4408 {
4409 struct ieee80211_local *local = wiphy_priv(wiphy);
4410 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4411
4412 return drv_abort_pmsr(local, sdata, request);
4413 }
4414
ieee80211_set_tid_config(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_tid_config * tid_conf)4415 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4416 struct net_device *dev,
4417 struct cfg80211_tid_config *tid_conf)
4418 {
4419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4420 struct sta_info *sta;
4421 int ret;
4422
4423 if (!sdata->local->ops->set_tid_config)
4424 return -EOPNOTSUPP;
4425
4426 if (!tid_conf->peer)
4427 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4428
4429 mutex_lock(&sdata->local->sta_mtx);
4430 sta = sta_info_get_bss(sdata, tid_conf->peer);
4431 if (!sta) {
4432 mutex_unlock(&sdata->local->sta_mtx);
4433 return -ENOENT;
4434 }
4435
4436 ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4437 mutex_unlock(&sdata->local->sta_mtx);
4438
4439 return ret;
4440 }
4441
ieee80211_reset_tid_config(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u8 tids)4442 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4443 struct net_device *dev,
4444 const u8 *peer, u8 tids)
4445 {
4446 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4447 struct sta_info *sta;
4448 int ret;
4449
4450 if (!sdata->local->ops->reset_tid_config)
4451 return -EOPNOTSUPP;
4452
4453 if (!peer)
4454 return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4455
4456 mutex_lock(&sdata->local->sta_mtx);
4457 sta = sta_info_get_bss(sdata, peer);
4458 if (!sta) {
4459 mutex_unlock(&sdata->local->sta_mtx);
4460 return -ENOENT;
4461 }
4462
4463 ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4464 mutex_unlock(&sdata->local->sta_mtx);
4465
4466 return ret;
4467 }
4468
ieee80211_set_sar_specs(struct wiphy * wiphy,struct cfg80211_sar_specs * sar)4469 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4470 struct cfg80211_sar_specs *sar)
4471 {
4472 struct ieee80211_local *local = wiphy_priv(wiphy);
4473
4474 if (!local->ops->set_sar_specs)
4475 return -EOPNOTSUPP;
4476
4477 return local->ops->set_sar_specs(&local->hw, sar);
4478 }
4479
4480 static int
ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data * sdata,u32 * changed)4481 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4482 u32 *changed)
4483 {
4484 switch (sdata->vif.type) {
4485 case NL80211_IFTYPE_AP: {
4486 int ret;
4487
4488 if (!sdata->deflink.u.ap.next_beacon)
4489 return -EINVAL;
4490
4491 ret = ieee80211_assign_beacon(sdata, &sdata->deflink,
4492 sdata->deflink.u.ap.next_beacon,
4493 NULL, NULL);
4494 ieee80211_free_next_beacon(&sdata->deflink);
4495
4496 if (ret < 0)
4497 return ret;
4498
4499 *changed |= ret;
4500 break;
4501 }
4502 default:
4503 WARN_ON_ONCE(1);
4504 return -EINVAL;
4505 }
4506
4507 return 0;
4508 }
4509
4510 static int
ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data * sdata,struct cfg80211_color_change_settings * params,u32 * changed)4511 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4512 struct cfg80211_color_change_settings *params,
4513 u32 *changed)
4514 {
4515 struct ieee80211_color_change_settings color_change = {};
4516 int err;
4517
4518 switch (sdata->vif.type) {
4519 case NL80211_IFTYPE_AP:
4520 sdata->deflink.u.ap.next_beacon =
4521 cfg80211_beacon_dup(¶ms->beacon_next);
4522 if (!sdata->deflink.u.ap.next_beacon)
4523 return -ENOMEM;
4524
4525 if (params->count <= 1)
4526 break;
4527
4528 color_change.counter_offset_beacon =
4529 params->counter_offset_beacon;
4530 color_change.counter_offset_presp =
4531 params->counter_offset_presp;
4532 color_change.count = params->count;
4533
4534 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
4535 ¶ms->beacon_color_change,
4536 NULL, &color_change);
4537 if (err < 0) {
4538 ieee80211_free_next_beacon(&sdata->deflink);
4539 return err;
4540 }
4541 *changed |= err;
4542 break;
4543 default:
4544 return -EOPNOTSUPP;
4545 }
4546
4547 return 0;
4548 }
4549
4550 static void
ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data * sdata,u8 color,int enable,u32 changed)4551 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata,
4552 u8 color, int enable, u32 changed)
4553 {
4554 sdata->vif.bss_conf.he_bss_color.color = color;
4555 sdata->vif.bss_conf.he_bss_color.enabled = enable;
4556 changed |= BSS_CHANGED_HE_BSS_COLOR;
4557
4558 ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
4559
4560 if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) {
4561 struct ieee80211_sub_if_data *child;
4562
4563 mutex_lock(&sdata->local->iflist_mtx);
4564 list_for_each_entry(child, &sdata->local->interfaces, list) {
4565 if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) {
4566 child->vif.bss_conf.he_bss_color.color = color;
4567 child->vif.bss_conf.he_bss_color.enabled = enable;
4568 ieee80211_link_info_change_notify(child,
4569 &child->deflink,
4570 BSS_CHANGED_HE_BSS_COLOR);
4571 }
4572 }
4573 mutex_unlock(&sdata->local->iflist_mtx);
4574 }
4575 }
4576
ieee80211_color_change_finalize(struct ieee80211_sub_if_data * sdata)4577 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata)
4578 {
4579 struct ieee80211_local *local = sdata->local;
4580 u32 changed = 0;
4581 int err;
4582
4583 sdata_assert_lock(sdata);
4584 lockdep_assert_held(&local->mtx);
4585
4586 sdata->vif.bss_conf.color_change_active = false;
4587
4588 err = ieee80211_set_after_color_change_beacon(sdata, &changed);
4589 if (err) {
4590 cfg80211_color_change_aborted_notify(sdata->dev);
4591 return err;
4592 }
4593
4594 ieee80211_color_change_bss_config_notify(sdata,
4595 sdata->vif.bss_conf.color_change_color,
4596 1, changed);
4597 cfg80211_color_change_notify(sdata->dev);
4598
4599 return 0;
4600 }
4601
ieee80211_color_change_finalize_work(struct work_struct * work)4602 void ieee80211_color_change_finalize_work(struct work_struct *work)
4603 {
4604 struct ieee80211_sub_if_data *sdata =
4605 container_of(work, struct ieee80211_sub_if_data,
4606 deflink.color_change_finalize_work);
4607 struct ieee80211_local *local = sdata->local;
4608
4609 sdata_lock(sdata);
4610 mutex_lock(&local->mtx);
4611
4612 /* AP might have been stopped while waiting for the lock. */
4613 if (!sdata->vif.bss_conf.color_change_active)
4614 goto unlock;
4615
4616 if (!ieee80211_sdata_running(sdata))
4617 goto unlock;
4618
4619 ieee80211_color_change_finalize(sdata);
4620
4621 unlock:
4622 mutex_unlock(&local->mtx);
4623 sdata_unlock(sdata);
4624 }
4625
ieee80211_color_change_finish(struct ieee80211_vif * vif)4626 void ieee80211_color_change_finish(struct ieee80211_vif *vif)
4627 {
4628 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4629
4630 ieee80211_queue_work(&sdata->local->hw,
4631 &sdata->deflink.color_change_finalize_work);
4632 }
4633 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
4634
4635 void
ieeee80211_obss_color_collision_notify(struct ieee80211_vif * vif,u64 color_bitmap,gfp_t gfp)4636 ieeee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
4637 u64 color_bitmap, gfp_t gfp)
4638 {
4639 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4640
4641 if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active)
4642 return;
4643
4644 cfg80211_obss_color_collision_notify(sdata->dev, color_bitmap, gfp);
4645 }
4646 EXPORT_SYMBOL_GPL(ieeee80211_obss_color_collision_notify);
4647
4648 static int
ieee80211_color_change(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_color_change_settings * params)4649 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
4650 struct cfg80211_color_change_settings *params)
4651 {
4652 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4653 struct ieee80211_local *local = sdata->local;
4654 u32 changed = 0;
4655 int err;
4656
4657 sdata_assert_lock(sdata);
4658
4659 if (sdata->vif.bss_conf.nontransmitted)
4660 return -EINVAL;
4661
4662 mutex_lock(&local->mtx);
4663
4664 /* don't allow another color change if one is already active or if csa
4665 * is active
4666 */
4667 if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) {
4668 err = -EBUSY;
4669 goto out;
4670 }
4671
4672 err = ieee80211_set_color_change_beacon(sdata, params, &changed);
4673 if (err)
4674 goto out;
4675
4676 sdata->vif.bss_conf.color_change_active = true;
4677 sdata->vif.bss_conf.color_change_color = params->color;
4678
4679 cfg80211_color_change_started_notify(sdata->dev, params->count);
4680
4681 if (changed)
4682 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed);
4683 else
4684 /* if the beacon didn't change, we can finalize immediately */
4685 ieee80211_color_change_finalize(sdata);
4686
4687 out:
4688 mutex_unlock(&local->mtx);
4689
4690 return err;
4691 }
4692
4693 static int
ieee80211_set_radar_background(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)4694 ieee80211_set_radar_background(struct wiphy *wiphy,
4695 struct cfg80211_chan_def *chandef)
4696 {
4697 struct ieee80211_local *local = wiphy_priv(wiphy);
4698
4699 if (!local->ops->set_radar_background)
4700 return -EOPNOTSUPP;
4701
4702 return local->ops->set_radar_background(&local->hw, chandef);
4703 }
4704
ieee80211_add_intf_link(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id)4705 static int ieee80211_add_intf_link(struct wiphy *wiphy,
4706 struct wireless_dev *wdev,
4707 unsigned int link_id)
4708 {
4709 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4710
4711 if (wdev->use_4addr)
4712 return -EOPNOTSUPP;
4713
4714 return ieee80211_vif_set_links(sdata, wdev->valid_links);
4715 }
4716
ieee80211_del_intf_link(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id)4717 static void ieee80211_del_intf_link(struct wiphy *wiphy,
4718 struct wireless_dev *wdev,
4719 unsigned int link_id)
4720 {
4721 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4722
4723 ieee80211_vif_set_links(sdata, wdev->valid_links);
4724 }
4725
sta_add_link_station(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct link_station_parameters * params)4726 static int sta_add_link_station(struct ieee80211_local *local,
4727 struct ieee80211_sub_if_data *sdata,
4728 struct link_station_parameters *params)
4729 {
4730 struct sta_info *sta;
4731 int ret;
4732
4733 sta = sta_info_get_bss(sdata, params->mld_mac);
4734 if (!sta)
4735 return -ENOENT;
4736
4737 if (!sta->sta.valid_links)
4738 return -EINVAL;
4739
4740 if (sta->sta.valid_links & BIT(params->link_id))
4741 return -EALREADY;
4742
4743 ret = ieee80211_sta_allocate_link(sta, params->link_id);
4744 if (ret)
4745 return ret;
4746
4747 ret = sta_link_apply_parameters(local, sta, true, params);
4748 if (ret) {
4749 ieee80211_sta_free_link(sta, params->link_id);
4750 return ret;
4751 }
4752
4753 /* ieee80211_sta_activate_link frees the link upon failure */
4754 return ieee80211_sta_activate_link(sta, params->link_id);
4755 }
4756
4757 static int
ieee80211_add_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_parameters * params)4758 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
4759 struct link_station_parameters *params)
4760 {
4761 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4762 struct ieee80211_local *local = wiphy_priv(wiphy);
4763 int ret;
4764
4765 mutex_lock(&sdata->local->sta_mtx);
4766 ret = sta_add_link_station(local, sdata, params);
4767 mutex_unlock(&sdata->local->sta_mtx);
4768
4769 return ret;
4770 }
4771
sta_mod_link_station(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct link_station_parameters * params)4772 static int sta_mod_link_station(struct ieee80211_local *local,
4773 struct ieee80211_sub_if_data *sdata,
4774 struct link_station_parameters *params)
4775 {
4776 struct sta_info *sta;
4777
4778 sta = sta_info_get_bss(sdata, params->mld_mac);
4779 if (!sta)
4780 return -ENOENT;
4781
4782 if (!(sta->sta.valid_links & BIT(params->link_id)))
4783 return -EINVAL;
4784
4785 return sta_link_apply_parameters(local, sta, false, params);
4786 }
4787
4788 static int
ieee80211_mod_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_parameters * params)4789 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
4790 struct link_station_parameters *params)
4791 {
4792 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4793 struct ieee80211_local *local = wiphy_priv(wiphy);
4794 int ret;
4795
4796 mutex_lock(&sdata->local->sta_mtx);
4797 ret = sta_mod_link_station(local, sdata, params);
4798 mutex_unlock(&sdata->local->sta_mtx);
4799
4800 return ret;
4801 }
4802
sta_del_link_station(struct ieee80211_sub_if_data * sdata,struct link_station_del_parameters * params)4803 static int sta_del_link_station(struct ieee80211_sub_if_data *sdata,
4804 struct link_station_del_parameters *params)
4805 {
4806 struct sta_info *sta;
4807
4808 sta = sta_info_get_bss(sdata, params->mld_mac);
4809 if (!sta)
4810 return -ENOENT;
4811
4812 if (!(sta->sta.valid_links & BIT(params->link_id)))
4813 return -EINVAL;
4814
4815 /* must not create a STA without links */
4816 if (sta->sta.valid_links == BIT(params->link_id))
4817 return -EINVAL;
4818
4819 ieee80211_sta_remove_link(sta, params->link_id);
4820
4821 return 0;
4822 }
4823
4824 static int
ieee80211_del_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_del_parameters * params)4825 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
4826 struct link_station_del_parameters *params)
4827 {
4828 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4829 int ret;
4830
4831 mutex_lock(&sdata->local->sta_mtx);
4832 ret = sta_del_link_station(sdata, params);
4833 mutex_unlock(&sdata->local->sta_mtx);
4834
4835 return ret;
4836 }
4837
4838 const struct cfg80211_ops mac80211_config_ops = {
4839 .add_virtual_intf = ieee80211_add_iface,
4840 .del_virtual_intf = ieee80211_del_iface,
4841 .change_virtual_intf = ieee80211_change_iface,
4842 .start_p2p_device = ieee80211_start_p2p_device,
4843 .stop_p2p_device = ieee80211_stop_p2p_device,
4844 .add_key = ieee80211_add_key,
4845 .del_key = ieee80211_del_key,
4846 .get_key = ieee80211_get_key,
4847 .set_default_key = ieee80211_config_default_key,
4848 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
4849 .set_default_beacon_key = ieee80211_config_default_beacon_key,
4850 .start_ap = ieee80211_start_ap,
4851 .change_beacon = ieee80211_change_beacon,
4852 .stop_ap = ieee80211_stop_ap,
4853 .add_station = ieee80211_add_station,
4854 .del_station = ieee80211_del_station,
4855 .change_station = ieee80211_change_station,
4856 .get_station = ieee80211_get_station,
4857 .dump_station = ieee80211_dump_station,
4858 .dump_survey = ieee80211_dump_survey,
4859 #ifdef CONFIG_MAC80211_MESH
4860 .add_mpath = ieee80211_add_mpath,
4861 .del_mpath = ieee80211_del_mpath,
4862 .change_mpath = ieee80211_change_mpath,
4863 .get_mpath = ieee80211_get_mpath,
4864 .dump_mpath = ieee80211_dump_mpath,
4865 .get_mpp = ieee80211_get_mpp,
4866 .dump_mpp = ieee80211_dump_mpp,
4867 .update_mesh_config = ieee80211_update_mesh_config,
4868 .get_mesh_config = ieee80211_get_mesh_config,
4869 .join_mesh = ieee80211_join_mesh,
4870 .leave_mesh = ieee80211_leave_mesh,
4871 #endif
4872 .join_ocb = ieee80211_join_ocb,
4873 .leave_ocb = ieee80211_leave_ocb,
4874 .change_bss = ieee80211_change_bss,
4875 .set_txq_params = ieee80211_set_txq_params,
4876 .set_monitor_channel = ieee80211_set_monitor_channel,
4877 .suspend = ieee80211_suspend,
4878 .resume = ieee80211_resume,
4879 .scan = ieee80211_scan,
4880 .abort_scan = ieee80211_abort_scan,
4881 .sched_scan_start = ieee80211_sched_scan_start,
4882 .sched_scan_stop = ieee80211_sched_scan_stop,
4883 .auth = ieee80211_auth,
4884 .assoc = ieee80211_assoc,
4885 .deauth = ieee80211_deauth,
4886 .disassoc = ieee80211_disassoc,
4887 .join_ibss = ieee80211_join_ibss,
4888 .leave_ibss = ieee80211_leave_ibss,
4889 .set_mcast_rate = ieee80211_set_mcast_rate,
4890 .set_wiphy_params = ieee80211_set_wiphy_params,
4891 .set_tx_power = ieee80211_set_tx_power,
4892 .get_tx_power = ieee80211_get_tx_power,
4893 .rfkill_poll = ieee80211_rfkill_poll,
4894 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
4895 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
4896 .set_power_mgmt = ieee80211_set_power_mgmt,
4897 .set_bitrate_mask = ieee80211_set_bitrate_mask,
4898 .remain_on_channel = ieee80211_remain_on_channel,
4899 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
4900 .mgmt_tx = ieee80211_mgmt_tx,
4901 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
4902 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
4903 .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
4904 .update_mgmt_frame_registrations =
4905 ieee80211_update_mgmt_frame_registrations,
4906 .set_antenna = ieee80211_set_antenna,
4907 .get_antenna = ieee80211_get_antenna,
4908 .set_rekey_data = ieee80211_set_rekey_data,
4909 .tdls_oper = ieee80211_tdls_oper,
4910 .tdls_mgmt = ieee80211_tdls_mgmt,
4911 .tdls_channel_switch = ieee80211_tdls_channel_switch,
4912 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
4913 .probe_client = ieee80211_probe_client,
4914 .set_noack_map = ieee80211_set_noack_map,
4915 #ifdef CONFIG_PM
4916 .set_wakeup = ieee80211_set_wakeup,
4917 #endif
4918 .get_channel = ieee80211_cfg_get_channel,
4919 .start_radar_detection = ieee80211_start_radar_detection,
4920 .end_cac = ieee80211_end_cac,
4921 .channel_switch = ieee80211_channel_switch,
4922 .set_qos_map = ieee80211_set_qos_map,
4923 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
4924 .add_tx_ts = ieee80211_add_tx_ts,
4925 .del_tx_ts = ieee80211_del_tx_ts,
4926 .start_nan = ieee80211_start_nan,
4927 .stop_nan = ieee80211_stop_nan,
4928 .nan_change_conf = ieee80211_nan_change_conf,
4929 .add_nan_func = ieee80211_add_nan_func,
4930 .del_nan_func = ieee80211_del_nan_func,
4931 .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
4932 .tx_control_port = ieee80211_tx_control_port,
4933 .get_txq_stats = ieee80211_get_txq_stats,
4934 .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
4935 .start_pmsr = ieee80211_start_pmsr,
4936 .abort_pmsr = ieee80211_abort_pmsr,
4937 .probe_mesh_link = ieee80211_probe_mesh_link,
4938 .set_tid_config = ieee80211_set_tid_config,
4939 .reset_tid_config = ieee80211_reset_tid_config,
4940 .set_sar_specs = ieee80211_set_sar_specs,
4941 .color_change = ieee80211_color_change,
4942 .set_radar_background = ieee80211_set_radar_background,
4943 .add_intf_link = ieee80211_add_intf_link,
4944 .del_intf_link = ieee80211_del_intf_link,
4945 .add_link_station = ieee80211_add_link_station,
4946 .mod_link_station = ieee80211_mod_link_station,
4947 .del_link_station = ieee80211_del_link_station,
4948 };
4949