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(&params, 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, &params);
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, &params->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, &params->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 						   &params->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 							   &params->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 					&params->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(&params->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 					      &params->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(&params->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(&params->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, &params->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, &params->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(&params->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 					      &params->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