Merge remote-tracking branch 'apparmor/apparmor-next'
[linux] / net / mac80211 / cfg.c
1 /*
2  * mac80211 configuration hooks for cfg80211
3  *
4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
5  * Copyright 2013-2015  Intel Mobile Communications GmbH
6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
7  * Copyright (C) 2018 Intel Corporation
8  *
9  * This file is GPLv2 as found in COPYING.
10  */
11
12 #include <linux/ieee80211.h>
13 #include <linux/nl80211.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/slab.h>
16 #include <net/net_namespace.h>
17 #include <linux/rcupdate.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 void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
27                                          struct vif_params *params)
28 {
29         bool mu_mimo_groups = false;
30         bool mu_mimo_follow = false;
31
32         if (params->vht_mumimo_groups) {
33                 u64 membership;
34
35                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
36
37                 memcpy(sdata->vif.bss_conf.mu_group.membership,
38                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
39                 memcpy(sdata->vif.bss_conf.mu_group.position,
40                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
41                        WLAN_USER_POSITION_LEN);
42                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
43                 /* don't care about endianness - just check for 0 */
44                 memcpy(&membership, params->vht_mumimo_groups,
45                        WLAN_MEMBERSHIP_LEN);
46                 mu_mimo_groups = membership != 0;
47         }
48
49         if (params->vht_mumimo_follow_addr) {
50                 mu_mimo_follow =
51                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
52                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
53                                 params->vht_mumimo_follow_addr);
54         }
55
56         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
57 }
58
59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
60                                      struct vif_params *params)
61 {
62         struct ieee80211_local *local = sdata->local;
63         struct ieee80211_sub_if_data *monitor_sdata;
64
65         /* check flags first */
66         if (params->flags && ieee80211_sdata_running(sdata)) {
67                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
68
69                 /*
70                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
71                  * MONITOR_FLAG_ACTIVE to be changed while the
72                  * interface is up.
73                  * Else we would need to add a lot of cruft
74                  * to update everything:
75                  *      cooked_mntrs, monitor and all fif_* counters
76                  *      reconfigure hardware
77                  */
78                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
79                         return -EBUSY;
80         }
81
82         /* also validate MU-MIMO change */
83         monitor_sdata = rtnl_dereference(local->monitor_sdata);
84
85         if (!monitor_sdata &&
86             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
87                 return -EOPNOTSUPP;
88
89         /* apply all changes now - no failures allowed */
90
91         if (monitor_sdata)
92                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
93
94         if (params->flags) {
95                 if (ieee80211_sdata_running(sdata)) {
96                         ieee80211_adjust_monitor_flags(sdata, -1);
97                         sdata->u.mntr.flags = params->flags;
98                         ieee80211_adjust_monitor_flags(sdata, 1);
99
100                         ieee80211_configure_filter(local);
101                 } else {
102                         /*
103                          * Because the interface is down, ieee80211_do_stop
104                          * and ieee80211_do_open take care of "everything"
105                          * mentioned in the comment above.
106                          */
107                         sdata->u.mntr.flags = params->flags;
108                 }
109         }
110
111         return 0;
112 }
113
114 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
115                                                 const char *name,
116                                                 unsigned char name_assign_type,
117                                                 enum nl80211_iftype type,
118                                                 struct vif_params *params)
119 {
120         struct ieee80211_local *local = wiphy_priv(wiphy);
121         struct wireless_dev *wdev;
122         struct ieee80211_sub_if_data *sdata;
123         int err;
124
125         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
126         if (err)
127                 return ERR_PTR(err);
128
129         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
130
131         if (type == NL80211_IFTYPE_MONITOR) {
132                 err = ieee80211_set_mon_options(sdata, params);
133                 if (err) {
134                         ieee80211_if_remove(sdata);
135                         return NULL;
136                 }
137         }
138
139         return wdev;
140 }
141
142 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
143 {
144         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
145
146         return 0;
147 }
148
149 static int ieee80211_change_iface(struct wiphy *wiphy,
150                                   struct net_device *dev,
151                                   enum nl80211_iftype type,
152                                   struct vif_params *params)
153 {
154         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
155         int ret;
156
157         ret = ieee80211_if_change_type(sdata, type);
158         if (ret)
159                 return ret;
160
161         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
163                 ieee80211_check_fast_rx_iface(sdata);
164         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
165                 sdata->u.mgd.use_4addr = params->use_4addr;
166         }
167
168         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
169                 ret = ieee80211_set_mon_options(sdata, params);
170                 if (ret)
171                         return ret;
172         }
173
174         return 0;
175 }
176
177 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
178                                       struct wireless_dev *wdev)
179 {
180         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
181         int ret;
182
183         mutex_lock(&sdata->local->chanctx_mtx);
184         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
185         mutex_unlock(&sdata->local->chanctx_mtx);
186         if (ret < 0)
187                 return ret;
188
189         return ieee80211_do_open(wdev, true);
190 }
191
192 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
193                                       struct wireless_dev *wdev)
194 {
195         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
196 }
197
198 static int ieee80211_start_nan(struct wiphy *wiphy,
199                                struct wireless_dev *wdev,
200                                struct cfg80211_nan_conf *conf)
201 {
202         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
203         int ret;
204
205         mutex_lock(&sdata->local->chanctx_mtx);
206         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
207         mutex_unlock(&sdata->local->chanctx_mtx);
208         if (ret < 0)
209                 return ret;
210
211         ret = ieee80211_do_open(wdev, true);
212         if (ret)
213                 return ret;
214
215         ret = drv_start_nan(sdata->local, sdata, conf);
216         if (ret)
217                 ieee80211_sdata_stop(sdata);
218
219         sdata->u.nan.conf = *conf;
220
221         return ret;
222 }
223
224 static void ieee80211_stop_nan(struct wiphy *wiphy,
225                                struct wireless_dev *wdev)
226 {
227         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
228
229         drv_stop_nan(sdata->local, sdata);
230         ieee80211_sdata_stop(sdata);
231 }
232
233 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
234                                      struct wireless_dev *wdev,
235                                      struct cfg80211_nan_conf *conf,
236                                      u32 changes)
237 {
238         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
239         struct cfg80211_nan_conf new_conf;
240         int ret = 0;
241
242         if (sdata->vif.type != NL80211_IFTYPE_NAN)
243                 return -EOPNOTSUPP;
244
245         if (!ieee80211_sdata_running(sdata))
246                 return -ENETDOWN;
247
248         new_conf = sdata->u.nan.conf;
249
250         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
251                 new_conf.master_pref = conf->master_pref;
252
253         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
254                 new_conf.bands = conf->bands;
255
256         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
257         if (!ret)
258                 sdata->u.nan.conf = new_conf;
259
260         return ret;
261 }
262
263 static int ieee80211_add_nan_func(struct wiphy *wiphy,
264                                   struct wireless_dev *wdev,
265                                   struct cfg80211_nan_func *nan_func)
266 {
267         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
268         int ret;
269
270         if (sdata->vif.type != NL80211_IFTYPE_NAN)
271                 return -EOPNOTSUPP;
272
273         if (!ieee80211_sdata_running(sdata))
274                 return -ENETDOWN;
275
276         spin_lock_bh(&sdata->u.nan.func_lock);
277
278         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
279                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
280                         GFP_ATOMIC);
281         spin_unlock_bh(&sdata->u.nan.func_lock);
282
283         if (ret < 0)
284                 return ret;
285
286         nan_func->instance_id = ret;
287
288         WARN_ON(nan_func->instance_id == 0);
289
290         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
291         if (ret) {
292                 spin_lock_bh(&sdata->u.nan.func_lock);
293                 idr_remove(&sdata->u.nan.function_inst_ids,
294                            nan_func->instance_id);
295                 spin_unlock_bh(&sdata->u.nan.func_lock);
296         }
297
298         return ret;
299 }
300
301 static struct cfg80211_nan_func *
302 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
303                                   u64 cookie)
304 {
305         struct cfg80211_nan_func *func;
306         int id;
307
308         lockdep_assert_held(&sdata->u.nan.func_lock);
309
310         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
311                 if (func->cookie == cookie)
312                         return func;
313         }
314
315         return NULL;
316 }
317
318 static void ieee80211_del_nan_func(struct wiphy *wiphy,
319                                   struct wireless_dev *wdev, u64 cookie)
320 {
321         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
322         struct cfg80211_nan_func *func;
323         u8 instance_id = 0;
324
325         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
326             !ieee80211_sdata_running(sdata))
327                 return;
328
329         spin_lock_bh(&sdata->u.nan.func_lock);
330
331         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
332         if (func)
333                 instance_id = func->instance_id;
334
335         spin_unlock_bh(&sdata->u.nan.func_lock);
336
337         if (instance_id)
338                 drv_del_nan_func(sdata->local, sdata, instance_id);
339 }
340
341 static int ieee80211_set_noack_map(struct wiphy *wiphy,
342                                   struct net_device *dev,
343                                   u16 noack_map)
344 {
345         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
346
347         sdata->noack_map = noack_map;
348
349         ieee80211_check_fast_xmit_iface(sdata);
350
351         return 0;
352 }
353
354 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
355                              u8 key_idx, bool pairwise, const u8 *mac_addr,
356                              struct key_params *params)
357 {
358         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
359         struct ieee80211_local *local = sdata->local;
360         struct sta_info *sta = NULL;
361         const struct ieee80211_cipher_scheme *cs = NULL;
362         struct ieee80211_key *key;
363         int err;
364
365         if (!ieee80211_sdata_running(sdata))
366                 return -ENETDOWN;
367
368         /* reject WEP and TKIP keys if WEP failed to initialize */
369         switch (params->cipher) {
370         case WLAN_CIPHER_SUITE_WEP40:
371         case WLAN_CIPHER_SUITE_TKIP:
372         case WLAN_CIPHER_SUITE_WEP104:
373                 if (IS_ERR(local->wep_tx_tfm))
374                         return -EINVAL;
375                 break;
376         case WLAN_CIPHER_SUITE_CCMP:
377         case WLAN_CIPHER_SUITE_CCMP_256:
378         case WLAN_CIPHER_SUITE_AES_CMAC:
379         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
380         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
381         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
382         case WLAN_CIPHER_SUITE_GCMP:
383         case WLAN_CIPHER_SUITE_GCMP_256:
384                 break;
385         default:
386                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
387                 break;
388         }
389
390         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
391                                   params->key, params->seq_len, params->seq,
392                                   cs);
393         if (IS_ERR(key))
394                 return PTR_ERR(key);
395
396         if (pairwise)
397                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
398
399         mutex_lock(&local->sta_mtx);
400
401         if (mac_addr) {
402                 sta = sta_info_get_bss(sdata, mac_addr);
403                 /*
404                  * The ASSOC test makes sure the driver is ready to
405                  * receive the key. When wpa_supplicant has roamed
406                  * using FT, it attempts to set the key before
407                  * association has completed, this rejects that attempt
408                  * so it will set the key again after association.
409                  *
410                  * TODO: accept the key if we have a station entry and
411                  *       add it to the device after the station.
412                  */
413                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
414                         ieee80211_key_free_unused(key);
415                         err = -ENOENT;
416                         goto out_unlock;
417                 }
418         }
419
420         switch (sdata->vif.type) {
421         case NL80211_IFTYPE_STATION:
422                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
423                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
424                 break;
425         case NL80211_IFTYPE_AP:
426         case NL80211_IFTYPE_AP_VLAN:
427                 /* Keys without a station are used for TX only */
428                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
429                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
430                 break;
431         case NL80211_IFTYPE_ADHOC:
432                 /* no MFP (yet) */
433                 break;
434         case NL80211_IFTYPE_MESH_POINT:
435 #ifdef CONFIG_MAC80211_MESH
436                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
437                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
438                 break;
439 #endif
440         case NL80211_IFTYPE_WDS:
441         case NL80211_IFTYPE_MONITOR:
442         case NL80211_IFTYPE_P2P_DEVICE:
443         case NL80211_IFTYPE_NAN:
444         case NL80211_IFTYPE_UNSPECIFIED:
445         case NUM_NL80211_IFTYPES:
446         case NL80211_IFTYPE_P2P_CLIENT:
447         case NL80211_IFTYPE_P2P_GO:
448         case NL80211_IFTYPE_OCB:
449                 /* shouldn't happen */
450                 WARN_ON_ONCE(1);
451                 break;
452         }
453
454         if (sta)
455                 sta->cipher_scheme = cs;
456
457         err = ieee80211_key_link(key, sdata, sta);
458
459  out_unlock:
460         mutex_unlock(&local->sta_mtx);
461
462         return err;
463 }
464
465 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
466                              u8 key_idx, bool pairwise, const u8 *mac_addr)
467 {
468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
469         struct ieee80211_local *local = sdata->local;
470         struct sta_info *sta;
471         struct ieee80211_key *key = NULL;
472         int ret;
473
474         mutex_lock(&local->sta_mtx);
475         mutex_lock(&local->key_mtx);
476
477         if (mac_addr) {
478                 ret = -ENOENT;
479
480                 sta = sta_info_get_bss(sdata, mac_addr);
481                 if (!sta)
482                         goto out_unlock;
483
484                 if (pairwise)
485                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
486                 else
487                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
488         } else
489                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
490
491         if (!key) {
492                 ret = -ENOENT;
493                 goto out_unlock;
494         }
495
496         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
497
498         ret = 0;
499  out_unlock:
500         mutex_unlock(&local->key_mtx);
501         mutex_unlock(&local->sta_mtx);
502
503         return ret;
504 }
505
506 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
507                              u8 key_idx, bool pairwise, const u8 *mac_addr,
508                              void *cookie,
509                              void (*callback)(void *cookie,
510                                               struct key_params *params))
511 {
512         struct ieee80211_sub_if_data *sdata;
513         struct sta_info *sta = NULL;
514         u8 seq[6] = {0};
515         struct key_params params;
516         struct ieee80211_key *key = NULL;
517         u64 pn64;
518         u32 iv32;
519         u16 iv16;
520         int err = -ENOENT;
521         struct ieee80211_key_seq kseq = {};
522
523         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
524
525         rcu_read_lock();
526
527         if (mac_addr) {
528                 sta = sta_info_get_bss(sdata, mac_addr);
529                 if (!sta)
530                         goto out;
531
532                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
533                         key = rcu_dereference(sta->ptk[key_idx]);
534                 else if (!pairwise &&
535                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
536                         key = rcu_dereference(sta->gtk[key_idx]);
537         } else
538                 key = rcu_dereference(sdata->keys[key_idx]);
539
540         if (!key)
541                 goto out;
542
543         memset(&params, 0, sizeof(params));
544
545         params.cipher = key->conf.cipher;
546
547         switch (key->conf.cipher) {
548         case WLAN_CIPHER_SUITE_TKIP:
549                 pn64 = atomic64_read(&key->conf.tx_pn);
550                 iv32 = TKIP_PN_TO_IV32(pn64);
551                 iv16 = TKIP_PN_TO_IV16(pn64);
552
553                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
554                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
555                         drv_get_key_seq(sdata->local, key, &kseq);
556                         iv32 = kseq.tkip.iv32;
557                         iv16 = kseq.tkip.iv16;
558                 }
559
560                 seq[0] = iv16 & 0xff;
561                 seq[1] = (iv16 >> 8) & 0xff;
562                 seq[2] = iv32 & 0xff;
563                 seq[3] = (iv32 >> 8) & 0xff;
564                 seq[4] = (iv32 >> 16) & 0xff;
565                 seq[5] = (iv32 >> 24) & 0xff;
566                 params.seq = seq;
567                 params.seq_len = 6;
568                 break;
569         case WLAN_CIPHER_SUITE_CCMP:
570         case WLAN_CIPHER_SUITE_CCMP_256:
571         case WLAN_CIPHER_SUITE_AES_CMAC:
572         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
573                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
574                              offsetof(typeof(kseq), aes_cmac));
575                 /* fall through */
576         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
577         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
578                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
579                              offsetof(typeof(kseq), aes_gmac));
580                 /* fall through */
581         case WLAN_CIPHER_SUITE_GCMP:
582         case WLAN_CIPHER_SUITE_GCMP_256:
583                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
584                              offsetof(typeof(kseq), gcmp));
585
586                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
587                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
588                         drv_get_key_seq(sdata->local, key, &kseq);
589                         memcpy(seq, kseq.ccmp.pn, 6);
590                 } else {
591                         pn64 = atomic64_read(&key->conf.tx_pn);
592                         seq[0] = pn64;
593                         seq[1] = pn64 >> 8;
594                         seq[2] = pn64 >> 16;
595                         seq[3] = pn64 >> 24;
596                         seq[4] = pn64 >> 32;
597                         seq[5] = pn64 >> 40;
598                 }
599                 params.seq = seq;
600                 params.seq_len = 6;
601                 break;
602         default:
603                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
604                         break;
605                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
606                         break;
607                 drv_get_key_seq(sdata->local, key, &kseq);
608                 params.seq = kseq.hw.seq;
609                 params.seq_len = kseq.hw.seq_len;
610                 break;
611         }
612
613         params.key = key->conf.key;
614         params.key_len = key->conf.keylen;
615
616         callback(cookie, &params);
617         err = 0;
618
619  out:
620         rcu_read_unlock();
621         return err;
622 }
623
624 static int ieee80211_config_default_key(struct wiphy *wiphy,
625                                         struct net_device *dev,
626                                         u8 key_idx, bool uni,
627                                         bool multi)
628 {
629         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
630
631         ieee80211_set_default_key(sdata, key_idx, uni, multi);
632
633         return 0;
634 }
635
636 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
637                                              struct net_device *dev,
638                                              u8 key_idx)
639 {
640         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
641
642         ieee80211_set_default_mgmt_key(sdata, key_idx);
643
644         return 0;
645 }
646
647 void sta_set_rate_info_tx(struct sta_info *sta,
648                           const struct ieee80211_tx_rate *rate,
649                           struct rate_info *rinfo)
650 {
651         rinfo->flags = 0;
652         if (rate->flags & IEEE80211_TX_RC_MCS) {
653                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
654                 rinfo->mcs = rate->idx;
655         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
656                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
657                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
658                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
659         } else {
660                 struct ieee80211_supported_band *sband;
661                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
662                 u16 brate;
663
664                 sband = ieee80211_get_sband(sta->sdata);
665                 if (sband) {
666                         brate = sband->bitrates[rate->idx].bitrate;
667                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
668                 }
669         }
670         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
671                 rinfo->bw = RATE_INFO_BW_40;
672         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
673                 rinfo->bw = RATE_INFO_BW_80;
674         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
675                 rinfo->bw = RATE_INFO_BW_160;
676         else
677                 rinfo->bw = RATE_INFO_BW_20;
678         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
679                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
680 }
681
682 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
683                                   int idx, u8 *mac, struct station_info *sinfo)
684 {
685         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
686         struct ieee80211_local *local = sdata->local;
687         struct sta_info *sta;
688         int ret = -ENOENT;
689
690         mutex_lock(&local->sta_mtx);
691
692         sta = sta_info_get_by_idx(sdata, idx);
693         if (sta) {
694                 ret = 0;
695                 memcpy(mac, sta->sta.addr, ETH_ALEN);
696                 sta_set_sinfo(sta, sinfo, true);
697         }
698
699         mutex_unlock(&local->sta_mtx);
700
701         return ret;
702 }
703
704 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
705                                  int idx, struct survey_info *survey)
706 {
707         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
708
709         return drv_get_survey(local, idx, survey);
710 }
711
712 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
713                                  const u8 *mac, struct station_info *sinfo)
714 {
715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
716         struct ieee80211_local *local = sdata->local;
717         struct sta_info *sta;
718         int ret = -ENOENT;
719
720         mutex_lock(&local->sta_mtx);
721
722         sta = sta_info_get_bss(sdata, mac);
723         if (sta) {
724                 ret = 0;
725                 sta_set_sinfo(sta, sinfo, true);
726         }
727
728         mutex_unlock(&local->sta_mtx);
729
730         return ret;
731 }
732
733 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
734                                          struct cfg80211_chan_def *chandef)
735 {
736         struct ieee80211_local *local = wiphy_priv(wiphy);
737         struct ieee80211_sub_if_data *sdata;
738         int ret = 0;
739
740         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
741                 return 0;
742
743         mutex_lock(&local->mtx);
744         if (local->use_chanctx) {
745                 sdata = rtnl_dereference(local->monitor_sdata);
746                 if (sdata) {
747                         ieee80211_vif_release_channel(sdata);
748                         ret = ieee80211_vif_use_channel(sdata, chandef,
749                                         IEEE80211_CHANCTX_EXCLUSIVE);
750                 }
751         } else if (local->open_count == local->monitors) {
752                 local->_oper_chandef = *chandef;
753                 ieee80211_hw_config(local, 0);
754         }
755
756         if (ret == 0)
757                 local->monitor_chandef = *chandef;
758         mutex_unlock(&local->mtx);
759
760         return ret;
761 }
762
763 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
764                                     const u8 *resp, size_t resp_len,
765                                     const struct ieee80211_csa_settings *csa)
766 {
767         struct probe_resp *new, *old;
768
769         if (!resp || !resp_len)
770                 return 1;
771
772         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
773
774         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
775         if (!new)
776                 return -ENOMEM;
777
778         new->len = resp_len;
779         memcpy(new->data, resp, resp_len);
780
781         if (csa)
782                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
783                        csa->n_counter_offsets_presp *
784                        sizeof(new->csa_counter_offsets[0]));
785
786         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
787         if (old)
788                 kfree_rcu(old, rcu_head);
789
790         return 0;
791 }
792
793 static int ieee80211_set_ftm_responder_params(
794                                 struct ieee80211_sub_if_data *sdata,
795                                 const u8 *lci, size_t lci_len,
796                                 const u8 *civicloc, size_t civicloc_len)
797 {
798         struct ieee80211_ftm_responder_params *new, *old;
799         struct ieee80211_bss_conf *bss_conf;
800         u8 *pos;
801         int len;
802
803         if (!lci_len && !civicloc_len)
804                 return 0;
805
806         bss_conf = &sdata->vif.bss_conf;
807         old = bss_conf->ftmr_params;
808         len = lci_len + civicloc_len;
809
810         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
811         if (!new)
812                 return -ENOMEM;
813
814         pos = (u8 *)(new + 1);
815         if (lci_len) {
816                 new->lci_len = lci_len;
817                 new->lci = pos;
818                 memcpy(pos, lci, lci_len);
819                 pos += lci_len;
820         }
821
822         if (civicloc_len) {
823                 new->civicloc_len = civicloc_len;
824                 new->civicloc = pos;
825                 memcpy(pos, civicloc, civicloc_len);
826                 pos += civicloc_len;
827         }
828
829         bss_conf->ftmr_params = new;
830         kfree(old);
831
832         return 0;
833 }
834
835 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
836                                    struct cfg80211_beacon_data *params,
837                                    const struct ieee80211_csa_settings *csa)
838 {
839         struct beacon_data *new, *old;
840         int new_head_len, new_tail_len;
841         int size, err;
842         u32 changed = BSS_CHANGED_BEACON;
843
844         old = sdata_dereference(sdata->u.ap.beacon, sdata);
845
846
847         /* Need to have a beacon head if we don't have one yet */
848         if (!params->head && !old)
849                 return -EINVAL;
850
851         /* new or old head? */
852         if (params->head)
853                 new_head_len = params->head_len;
854         else
855                 new_head_len = old->head_len;
856
857         /* new or old tail? */
858         if (params->tail || !old)
859                 /* params->tail_len will be zero for !params->tail */
860                 new_tail_len = params->tail_len;
861         else
862                 new_tail_len = old->tail_len;
863
864         size = sizeof(*new) + new_head_len + new_tail_len;
865
866         new = kzalloc(size, GFP_KERNEL);
867         if (!new)
868                 return -ENOMEM;
869
870         /* start filling the new info now */
871
872         /*
873          * pointers go into the block we allocated,
874          * memory is | beacon_data | head | tail |
875          */
876         new->head = ((u8 *) new) + sizeof(*new);
877         new->tail = new->head + new_head_len;
878         new->head_len = new_head_len;
879         new->tail_len = new_tail_len;
880
881         if (csa) {
882                 new->csa_current_counter = csa->count;
883                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
884                        csa->n_counter_offsets_beacon *
885                        sizeof(new->csa_counter_offsets[0]));
886         }
887
888         /* copy in head */
889         if (params->head)
890                 memcpy(new->head, params->head, new_head_len);
891         else
892                 memcpy(new->head, old->head, new_head_len);
893
894         /* copy in optional tail */
895         if (params->tail)
896                 memcpy(new->tail, params->tail, new_tail_len);
897         else
898                 if (old)
899                         memcpy(new->tail, old->tail, new_tail_len);
900
901         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
902                                        params->probe_resp_len, csa);
903         if (err < 0)
904                 return err;
905         if (err == 0)
906                 changed |= BSS_CHANGED_AP_PROBE_RESP;
907
908         if (params->ftm_responder != -1) {
909                 sdata->vif.bss_conf.ftm_responder = params->ftm_responder;
910                 err = ieee80211_set_ftm_responder_params(sdata,
911                                                          params->lci,
912                                                          params->lci_len,
913                                                          params->civicloc,
914                                                          params->civicloc_len);
915
916                 if (err < 0)
917                         return err;
918
919                 changed |= BSS_CHANGED_FTM_RESPONDER;
920         }
921
922         rcu_assign_pointer(sdata->u.ap.beacon, new);
923
924         if (old)
925                 kfree_rcu(old, rcu_head);
926
927         return changed;
928 }
929
930 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
931                               struct cfg80211_ap_settings *params)
932 {
933         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
934         struct ieee80211_local *local = sdata->local;
935         struct beacon_data *old;
936         struct ieee80211_sub_if_data *vlan;
937         u32 changed = BSS_CHANGED_BEACON_INT |
938                       BSS_CHANGED_BEACON_ENABLED |
939                       BSS_CHANGED_BEACON |
940                       BSS_CHANGED_SSID |
941                       BSS_CHANGED_P2P_PS |
942                       BSS_CHANGED_TXPOWER;
943         int err;
944
945         old = sdata_dereference(sdata->u.ap.beacon, sdata);
946         if (old)
947                 return -EALREADY;
948
949         switch (params->smps_mode) {
950         case NL80211_SMPS_OFF:
951                 sdata->smps_mode = IEEE80211_SMPS_OFF;
952                 break;
953         case NL80211_SMPS_STATIC:
954                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
955                 break;
956         case NL80211_SMPS_DYNAMIC:
957                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
958                 break;
959         default:
960                 return -EINVAL;
961         }
962         sdata->u.ap.req_smps = sdata->smps_mode;
963
964         sdata->needed_rx_chains = sdata->local->rx_chains;
965
966         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
967
968         if (params->he_cap)
969                 sdata->vif.bss_conf.he_support = true;
970
971         mutex_lock(&local->mtx);
972         err = ieee80211_vif_use_channel(sdata, &params->chandef,
973                                         IEEE80211_CHANCTX_SHARED);
974         if (!err)
975                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
976         mutex_unlock(&local->mtx);
977         if (err)
978                 return err;
979
980         /*
981          * Apply control port protocol, this allows us to
982          * not encrypt dynamic WEP control frames.
983          */
984         sdata->control_port_protocol = params->crypto.control_port_ethertype;
985         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
986         sdata->control_port_over_nl80211 =
987                                 params->crypto.control_port_over_nl80211;
988         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
989                                                         &params->crypto,
990                                                         sdata->vif.type);
991
992         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
993                 vlan->control_port_protocol =
994                         params->crypto.control_port_ethertype;
995                 vlan->control_port_no_encrypt =
996                         params->crypto.control_port_no_encrypt;
997                 vlan->control_port_over_nl80211 =
998                         params->crypto.control_port_over_nl80211;
999                 vlan->encrypt_headroom =
1000                         ieee80211_cs_headroom(sdata->local,
1001                                               &params->crypto,
1002                                               vlan->vif.type);
1003         }
1004
1005         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1006         sdata->vif.bss_conf.enable_beacon = true;
1007         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
1008
1009         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1010         if (params->ssid_len)
1011                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1012                        params->ssid_len);
1013         sdata->vif.bss_conf.hidden_ssid =
1014                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1015
1016         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1017                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1018         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1019                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1020         if (params->p2p_opp_ps)
1021                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1022                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1023
1024         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
1025         if (err < 0) {
1026                 ieee80211_vif_release_channel(sdata);
1027                 return err;
1028         }
1029         changed |= err;
1030
1031         err = drv_start_ap(sdata->local, sdata);
1032         if (err) {
1033                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1034
1035                 if (old)
1036                         kfree_rcu(old, rcu_head);
1037                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1038                 ieee80211_vif_release_channel(sdata);
1039                 return err;
1040         }
1041
1042         ieee80211_recalc_dtim(local, sdata);
1043         ieee80211_bss_info_change_notify(sdata, changed);
1044
1045         netif_carrier_on(dev);
1046         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1047                 netif_carrier_on(vlan->dev);
1048
1049         return 0;
1050 }
1051
1052 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1053                                    struct cfg80211_beacon_data *params)
1054 {
1055         struct ieee80211_sub_if_data *sdata;
1056         struct beacon_data *old;
1057         int err;
1058
1059         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1060         sdata_assert_lock(sdata);
1061
1062         /* don't allow changing the beacon while CSA is in place - offset
1063          * of channel switch counter may change
1064          */
1065         if (sdata->vif.csa_active)
1066                 return -EBUSY;
1067
1068         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1069         if (!old)
1070                 return -ENOENT;
1071
1072         err = ieee80211_assign_beacon(sdata, params, NULL);
1073         if (err < 0)
1074                 return err;
1075         ieee80211_bss_info_change_notify(sdata, err);
1076         return 0;
1077 }
1078
1079 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1080 {
1081         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1082         struct ieee80211_sub_if_data *vlan;
1083         struct ieee80211_local *local = sdata->local;
1084         struct beacon_data *old_beacon;
1085         struct probe_resp *old_probe_resp;
1086         struct cfg80211_chan_def chandef;
1087
1088         sdata_assert_lock(sdata);
1089
1090         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1091         if (!old_beacon)
1092                 return -ENOENT;
1093         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1094
1095         /* abort any running channel switch */
1096         mutex_lock(&local->mtx);
1097         sdata->vif.csa_active = false;
1098         if (sdata->csa_block_tx) {
1099                 ieee80211_wake_vif_queues(local, sdata,
1100                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1101                 sdata->csa_block_tx = false;
1102         }
1103
1104         mutex_unlock(&local->mtx);
1105
1106         kfree(sdata->u.ap.next_beacon);
1107         sdata->u.ap.next_beacon = NULL;
1108
1109         /* turn off carrier for this interface and dependent VLANs */
1110         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1111                 netif_carrier_off(vlan->dev);
1112         netif_carrier_off(dev);
1113
1114         /* remove beacon and probe response */
1115         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1116         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1117         kfree_rcu(old_beacon, rcu_head);
1118         if (old_probe_resp)
1119                 kfree_rcu(old_probe_resp, rcu_head);
1120         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1121
1122         kfree(sdata->vif.bss_conf.ftmr_params);
1123         sdata->vif.bss_conf.ftmr_params = NULL;
1124
1125         __sta_info_flush(sdata, true);
1126         ieee80211_free_keys(sdata, true);
1127
1128         sdata->vif.bss_conf.enable_beacon = false;
1129         sdata->vif.bss_conf.ssid_len = 0;
1130         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1131         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1132
1133         if (sdata->wdev.cac_started) {
1134                 chandef = sdata->vif.bss_conf.chandef;
1135                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1136                 cfg80211_cac_event(sdata->dev, &chandef,
1137                                    NL80211_RADAR_CAC_ABORTED,
1138                                    GFP_KERNEL);
1139         }
1140
1141         drv_stop_ap(sdata->local, sdata);
1142
1143         /* free all potentially still buffered bcast frames */
1144         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1145         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1146
1147         mutex_lock(&local->mtx);
1148         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1149         ieee80211_vif_release_channel(sdata);
1150         mutex_unlock(&local->mtx);
1151
1152         return 0;
1153 }
1154
1155 static int sta_apply_auth_flags(struct ieee80211_local *local,
1156                                 struct sta_info *sta,
1157                                 u32 mask, u32 set)
1158 {
1159         int ret;
1160
1161         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1162             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1163             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1164                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1165                 if (ret)
1166                         return ret;
1167         }
1168
1169         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1170             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1171             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1172                 /*
1173                  * When peer becomes associated, init rate control as
1174                  * well. Some drivers require rate control initialized
1175                  * before drv_sta_state() is called.
1176                  */
1177                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1178                         rate_control_rate_init(sta);
1179
1180                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1181                 if (ret)
1182                         return ret;
1183         }
1184
1185         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1186                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1187                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1188                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1189                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1190                 else
1191                         ret = 0;
1192                 if (ret)
1193                         return ret;
1194         }
1195
1196         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1197             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1198             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1199                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1200                 if (ret)
1201                         return ret;
1202         }
1203
1204         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1205             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1206             test_sta_flag(sta, WLAN_STA_AUTH)) {
1207                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1208                 if (ret)
1209                         return ret;
1210         }
1211
1212         return 0;
1213 }
1214
1215 static void sta_apply_mesh_params(struct ieee80211_local *local,
1216                                   struct sta_info *sta,
1217                                   struct station_parameters *params)
1218 {
1219 #ifdef CONFIG_MAC80211_MESH
1220         struct ieee80211_sub_if_data *sdata = sta->sdata;
1221         u32 changed = 0;
1222
1223         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1224                 switch (params->plink_state) {
1225                 case NL80211_PLINK_ESTAB:
1226                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1227                                 changed = mesh_plink_inc_estab_count(sdata);
1228                         sta->mesh->plink_state = params->plink_state;
1229                         sta->mesh->aid = params->peer_aid;
1230
1231                         ieee80211_mps_sta_status_update(sta);
1232                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1233                                       sdata->u.mesh.mshcfg.power_mode);
1234
1235                         ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1236                         /* init at low value */
1237                         ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1238
1239                         break;
1240                 case NL80211_PLINK_LISTEN:
1241                 case NL80211_PLINK_BLOCKED:
1242                 case NL80211_PLINK_OPN_SNT:
1243                 case NL80211_PLINK_OPN_RCVD:
1244                 case NL80211_PLINK_CNF_RCVD:
1245                 case NL80211_PLINK_HOLDING:
1246                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1247                                 changed = mesh_plink_dec_estab_count(sdata);
1248                         sta->mesh->plink_state = params->plink_state;
1249
1250                         ieee80211_mps_sta_status_update(sta);
1251                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1252                                         NL80211_MESH_POWER_UNKNOWN);
1253                         break;
1254                 default:
1255                         /*  nothing  */
1256                         break;
1257                 }
1258         }
1259
1260         switch (params->plink_action) {
1261         case NL80211_PLINK_ACTION_NO_ACTION:
1262                 /* nothing */
1263                 break;
1264         case NL80211_PLINK_ACTION_OPEN:
1265                 changed |= mesh_plink_open(sta);
1266                 break;
1267         case NL80211_PLINK_ACTION_BLOCK:
1268                 changed |= mesh_plink_block(sta);
1269                 break;
1270         }
1271
1272         if (params->local_pm)
1273                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1274                                                           params->local_pm);
1275
1276         ieee80211_mbss_info_change_notify(sdata, changed);
1277 #endif
1278 }
1279
1280 static int sta_apply_parameters(struct ieee80211_local *local,
1281                                 struct sta_info *sta,
1282                                 struct station_parameters *params)
1283 {
1284         int ret = 0;
1285         struct ieee80211_supported_band *sband;
1286         struct ieee80211_sub_if_data *sdata = sta->sdata;
1287         u32 mask, set;
1288
1289         sband = ieee80211_get_sband(sdata);
1290         if (!sband)
1291                 return -EINVAL;
1292
1293         mask = params->sta_flags_mask;
1294         set = params->sta_flags_set;
1295
1296         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1297                 /*
1298                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1299                  * API but must follow AUTHENTICATED for driver state.
1300                  */
1301                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1302                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1303                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1304                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1305         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1306                 /*
1307                  * TDLS -- everything follows authorized, but
1308                  * only becoming authorized is possible, not
1309                  * going back
1310                  */
1311                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1312                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1313                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1314                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1315                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1316                 }
1317         }
1318
1319         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1320             local->hw.queues >= IEEE80211_NUM_ACS)
1321                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1322
1323         /* auth flags will be set later for TDLS,
1324          * and for unassociated stations that move to assocaited */
1325         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1326             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1327               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1328                 ret = sta_apply_auth_flags(local, sta, mask, set);
1329                 if (ret)
1330                         return ret;
1331         }
1332
1333         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1334                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1335                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1336                 else
1337                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1338         }
1339
1340         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1341                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1342                 if (set & BIT(NL80211_STA_FLAG_MFP))
1343                         set_sta_flag(sta, WLAN_STA_MFP);
1344                 else
1345                         clear_sta_flag(sta, WLAN_STA_MFP);
1346         }
1347
1348         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1349                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1350                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1351                 else
1352                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1353         }
1354
1355         /* mark TDLS channel switch support, if the AP allows it */
1356         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1357             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1358             params->ext_capab_len >= 4 &&
1359             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1360                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1361
1362         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1363             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1364             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1365             params->ext_capab_len >= 8 &&
1366             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1367                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1368
1369         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1370                 sta->sta.uapsd_queues = params->uapsd_queues;
1371                 sta->sta.max_sp = params->max_sp;
1372         }
1373
1374         /* The sender might not have sent the last bit, consider it to be 0 */
1375         if (params->ext_capab_len >= 8) {
1376                 u8 val = (params->ext_capab[7] &
1377                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1378
1379                 /* we did get all the bits, take the MSB as well */
1380                 if (params->ext_capab_len >= 9) {
1381                         u8 val_msb = params->ext_capab[8] &
1382                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1383                         val_msb <<= 1;
1384                         val |= val_msb;
1385                 }
1386
1387                 switch (val) {
1388                 case 1:
1389                         sta->sta.max_amsdu_subframes = 32;
1390                         break;
1391                 case 2:
1392                         sta->sta.max_amsdu_subframes = 16;
1393                         break;
1394                 case 3:
1395                         sta->sta.max_amsdu_subframes = 8;
1396                         break;
1397                 default:
1398                         sta->sta.max_amsdu_subframes = 0;
1399                 }
1400         }
1401
1402         /*
1403          * cfg80211 validates this (1-2007) and allows setting the AID
1404          * only when creating a new station entry
1405          */
1406         if (params->aid)
1407                 sta->sta.aid = params->aid;
1408
1409         /*
1410          * Some of the following updates would be racy if called on an
1411          * existing station, via ieee80211_change_station(). However,
1412          * all such changes are rejected by cfg80211 except for updates
1413          * changing the supported rates on an existing but not yet used
1414          * TDLS peer.
1415          */
1416
1417         if (params->listen_interval >= 0)
1418                 sta->listen_interval = params->listen_interval;
1419
1420         if (params->supported_rates) {
1421                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1422                                          sband, params->supported_rates,
1423                                          params->supported_rates_len,
1424                                          &sta->sta.supp_rates[sband->band]);
1425         }
1426
1427         if (params->ht_capa)
1428                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1429                                                   params->ht_capa, sta);
1430
1431         /* VHT can override some HT caps such as the A-MSDU max length */
1432         if (params->vht_capa)
1433                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1434                                                     params->vht_capa, sta);
1435
1436         if (params->he_capa)
1437                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1438                                                   (void *)params->he_capa,
1439                                                   params->he_capa_len, sta);
1440
1441         if (params->opmode_notif_used) {
1442                 /* returned value is only needed for rc update, but the
1443                  * rc isn't initialized here yet, so ignore it
1444                  */
1445                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1446                                               sband->band);
1447         }
1448
1449         if (params->support_p2p_ps >= 0)
1450                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1451
1452         if (ieee80211_vif_is_mesh(&sdata->vif))
1453                 sta_apply_mesh_params(local, sta, params);
1454
1455         if (params->airtime_weight)
1456                 sta->airtime_weight = params->airtime_weight;
1457
1458         /* set the STA state after all sta info from usermode has been set */
1459         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1460             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1461                 ret = sta_apply_auth_flags(local, sta, mask, set);
1462                 if (ret)
1463                         return ret;
1464         }
1465
1466         return 0;
1467 }
1468
1469 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1470                                  const u8 *mac,
1471                                  struct station_parameters *params)
1472 {
1473         struct ieee80211_local *local = wiphy_priv(wiphy);
1474         struct sta_info *sta;
1475         struct ieee80211_sub_if_data *sdata;
1476         int err;
1477         int layer2_update;
1478
1479         if (params->vlan) {
1480                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1481
1482                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1483                     sdata->vif.type != NL80211_IFTYPE_AP)
1484                         return -EINVAL;
1485         } else
1486                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1487
1488         if (ether_addr_equal(mac, sdata->vif.addr))
1489                 return -EINVAL;
1490
1491         if (is_multicast_ether_addr(mac))
1492                 return -EINVAL;
1493
1494         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1495         if (!sta)
1496                 return -ENOMEM;
1497
1498         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1499                 sta->sta.tdls = true;
1500
1501         if (sta->sta.tdls && sdata->vif.type == NL80211_IFTYPE_STATION &&
1502             !sdata->u.mgd.associated)
1503                 return -EINVAL;
1504
1505         err = sta_apply_parameters(local, sta, params);
1506         if (err) {
1507                 sta_info_free(local, sta);
1508                 return err;
1509         }
1510
1511         /*
1512          * for TDLS and for unassociated station, rate control should be
1513          * initialized only when rates are known and station is marked
1514          * authorized/associated
1515          */
1516         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1517             test_sta_flag(sta, WLAN_STA_ASSOC))
1518                 rate_control_rate_init(sta);
1519
1520         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1521                 sdata->vif.type == NL80211_IFTYPE_AP;
1522
1523         err = sta_info_insert_rcu(sta);
1524         if (err) {
1525                 rcu_read_unlock();
1526                 return err;
1527         }
1528
1529         if (layer2_update)
1530                 cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr);
1531
1532         rcu_read_unlock();
1533
1534         return 0;
1535 }
1536
1537 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1538                                  struct station_del_parameters *params)
1539 {
1540         struct ieee80211_sub_if_data *sdata;
1541
1542         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1543
1544         if (params->mac)
1545                 return sta_info_destroy_addr_bss(sdata, params->mac);
1546
1547         sta_info_flush(sdata);
1548         return 0;
1549 }
1550
1551 static int ieee80211_change_station(struct wiphy *wiphy,
1552                                     struct net_device *dev, const u8 *mac,
1553                                     struct station_parameters *params)
1554 {
1555         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1556         struct ieee80211_local *local = wiphy_priv(wiphy);
1557         struct sta_info *sta;
1558         struct ieee80211_sub_if_data *vlansdata;
1559         enum cfg80211_station_type statype;
1560         int err;
1561
1562         mutex_lock(&local->sta_mtx);
1563
1564         sta = sta_info_get_bss(sdata, mac);
1565         if (!sta) {
1566                 err = -ENOENT;
1567                 goto out_err;
1568         }
1569
1570         switch (sdata->vif.type) {
1571         case NL80211_IFTYPE_MESH_POINT:
1572                 if (sdata->u.mesh.user_mpm)
1573                         statype = CFG80211_STA_MESH_PEER_USER;
1574                 else
1575                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1576                 break;
1577         case NL80211_IFTYPE_ADHOC:
1578                 statype = CFG80211_STA_IBSS;
1579                 break;
1580         case NL80211_IFTYPE_STATION:
1581                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1582                         statype = CFG80211_STA_AP_STA;
1583                         break;
1584                 }
1585                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1586                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1587                 else
1588                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1589                 break;
1590         case NL80211_IFTYPE_AP:
1591         case NL80211_IFTYPE_AP_VLAN:
1592                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1593                         statype = CFG80211_STA_AP_CLIENT;
1594                 else
1595                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1596                 break;
1597         default:
1598                 err = -EOPNOTSUPP;
1599                 goto out_err;
1600         }
1601
1602         err = cfg80211_check_station_change(wiphy, params, statype);
1603         if (err)
1604                 goto out_err;
1605
1606         if (params->vlan && params->vlan != sta->sdata->dev) {
1607                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1608
1609                 if (params->vlan->ieee80211_ptr->use_4addr) {
1610                         if (vlansdata->u.vlan.sta) {
1611                                 err = -EBUSY;
1612                                 goto out_err;
1613                         }
1614
1615                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1616                         __ieee80211_check_fast_rx_iface(vlansdata);
1617                 }
1618
1619                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1620                     sta->sdata->u.vlan.sta)
1621                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1622
1623                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1624                         ieee80211_vif_dec_num_mcast(sta->sdata);
1625
1626                 sta->sdata = vlansdata;
1627                 ieee80211_check_fast_xmit(sta);
1628
1629                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1630                         ieee80211_vif_inc_num_mcast(sta->sdata);
1631
1632                 cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr);
1633         }
1634
1635         err = sta_apply_parameters(local, sta, params);
1636         if (err)
1637                 goto out_err;
1638
1639         mutex_unlock(&local->sta_mtx);
1640
1641         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1642              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1643             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1644             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1645             sta_info_tx_streams(sta) != 1) {
1646                 ht_dbg(sta->sdata,
1647                        "%pM just authorized and MIMO capable - update SMPS\n",
1648                        sta->sta.addr);
1649                 ieee80211_send_smps_action(sta->sdata,
1650                         sta->sdata->bss->req_smps,
1651                         sta->sta.addr,
1652                         sta->sdata->vif.bss_conf.bssid);
1653         }
1654
1655         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1656             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1657                 ieee80211_recalc_ps(local);
1658                 ieee80211_recalc_ps_vif(sdata);
1659         }
1660
1661         return 0;
1662 out_err:
1663         mutex_unlock(&local->sta_mtx);
1664         return err;
1665 }
1666
1667 #ifdef CONFIG_MAC80211_MESH
1668 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1669                                const u8 *dst, const u8 *next_hop)
1670 {
1671         struct ieee80211_sub_if_data *sdata;
1672         struct mesh_path *mpath;
1673         struct sta_info *sta;
1674
1675         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1676
1677         rcu_read_lock();
1678         sta = sta_info_get(sdata, next_hop);
1679         if (!sta) {
1680                 rcu_read_unlock();
1681                 return -ENOENT;
1682         }
1683
1684         mpath = mesh_path_add(sdata, dst);
1685         if (IS_ERR(mpath)) {
1686                 rcu_read_unlock();
1687                 return PTR_ERR(mpath);
1688         }
1689
1690         mesh_path_fix_nexthop(mpath, sta);
1691
1692         rcu_read_unlock();
1693         return 0;
1694 }
1695
1696 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1697                                const u8 *dst)
1698 {
1699         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1700
1701         if (dst)
1702                 return mesh_path_del(sdata, dst);
1703
1704         mesh_path_flush_by_iface(sdata);
1705         return 0;
1706 }
1707
1708 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1709                                   const u8 *dst, const u8 *next_hop)
1710 {
1711         struct ieee80211_sub_if_data *sdata;
1712         struct mesh_path *mpath;
1713         struct sta_info *sta;
1714
1715         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1716
1717         rcu_read_lock();
1718
1719         sta = sta_info_get(sdata, next_hop);
1720         if (!sta) {
1721                 rcu_read_unlock();
1722                 return -ENOENT;
1723         }
1724
1725         mpath = mesh_path_lookup(sdata, dst);
1726         if (!mpath) {
1727                 rcu_read_unlock();
1728                 return -ENOENT;
1729         }
1730
1731         mesh_path_fix_nexthop(mpath, sta);
1732
1733         rcu_read_unlock();
1734         return 0;
1735 }
1736
1737 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1738                             struct mpath_info *pinfo)
1739 {
1740         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1741
1742         if (next_hop_sta)
1743                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1744         else
1745                 eth_zero_addr(next_hop);
1746
1747         memset(pinfo, 0, sizeof(*pinfo));
1748
1749         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1750
1751         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1752                         MPATH_INFO_SN |
1753                         MPATH_INFO_METRIC |
1754                         MPATH_INFO_EXPTIME |
1755                         MPATH_INFO_DISCOVERY_TIMEOUT |
1756                         MPATH_INFO_DISCOVERY_RETRIES |
1757                         MPATH_INFO_FLAGS |
1758                         MPATH_INFO_HOP_COUNT |
1759                         MPATH_INFO_PATH_CHANGE;
1760
1761         pinfo->frame_qlen = mpath->frame_queue.qlen;
1762         pinfo->sn = mpath->sn;
1763         pinfo->metric = mpath->metric;
1764         if (time_before(jiffies, mpath->exp_time))
1765                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1766         pinfo->discovery_timeout =
1767                         jiffies_to_msecs(mpath->discovery_timeout);
1768         pinfo->discovery_retries = mpath->discovery_retries;
1769         if (mpath->flags & MESH_PATH_ACTIVE)
1770                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1771         if (mpath->flags & MESH_PATH_RESOLVING)
1772                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1773         if (mpath->flags & MESH_PATH_SN_VALID)
1774                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1775         if (mpath->flags & MESH_PATH_FIXED)
1776                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1777         if (mpath->flags & MESH_PATH_RESOLVED)
1778                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1779         pinfo->hop_count = mpath->hop_count;
1780         pinfo->path_change_count = mpath->path_change_count;
1781 }
1782
1783 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1784                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1785
1786 {
1787         struct ieee80211_sub_if_data *sdata;
1788         struct mesh_path *mpath;
1789
1790         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1791
1792         rcu_read_lock();
1793         mpath = mesh_path_lookup(sdata, dst);
1794         if (!mpath) {
1795                 rcu_read_unlock();
1796                 return -ENOENT;
1797         }
1798         memcpy(dst, mpath->dst, ETH_ALEN);
1799         mpath_set_pinfo(mpath, next_hop, pinfo);
1800         rcu_read_unlock();
1801         return 0;
1802 }
1803
1804 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1805                                 int idx, u8 *dst, u8 *next_hop,
1806                                 struct mpath_info *pinfo)
1807 {
1808         struct ieee80211_sub_if_data *sdata;
1809         struct mesh_path *mpath;
1810
1811         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1812
1813         rcu_read_lock();
1814         mpath = mesh_path_lookup_by_idx(sdata, idx);
1815         if (!mpath) {
1816                 rcu_read_unlock();
1817                 return -ENOENT;
1818         }
1819         memcpy(dst, mpath->dst, ETH_ALEN);
1820         mpath_set_pinfo(mpath, next_hop, pinfo);
1821         rcu_read_unlock();
1822         return 0;
1823 }
1824
1825 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1826                           struct mpath_info *pinfo)
1827 {
1828         memset(pinfo, 0, sizeof(*pinfo));
1829         memcpy(mpp, mpath->mpp, ETH_ALEN);
1830
1831         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1832 }
1833
1834 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1835                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1836
1837 {
1838         struct ieee80211_sub_if_data *sdata;
1839         struct mesh_path *mpath;
1840
1841         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842
1843         rcu_read_lock();
1844         mpath = mpp_path_lookup(sdata, dst);
1845         if (!mpath) {
1846                 rcu_read_unlock();
1847                 return -ENOENT;
1848         }
1849         memcpy(dst, mpath->dst, ETH_ALEN);
1850         mpp_set_pinfo(mpath, mpp, pinfo);
1851         rcu_read_unlock();
1852         return 0;
1853 }
1854
1855 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1856                               int idx, u8 *dst, u8 *mpp,
1857                               struct mpath_info *pinfo)
1858 {
1859         struct ieee80211_sub_if_data *sdata;
1860         struct mesh_path *mpath;
1861
1862         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1863
1864         rcu_read_lock();
1865         mpath = mpp_path_lookup_by_idx(sdata, idx);
1866         if (!mpath) {
1867                 rcu_read_unlock();
1868                 return -ENOENT;
1869         }
1870         memcpy(dst, mpath->dst, ETH_ALEN);
1871         mpp_set_pinfo(mpath, mpp, pinfo);
1872         rcu_read_unlock();
1873         return 0;
1874 }
1875
1876 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1877                                 struct net_device *dev,
1878                                 struct mesh_config *conf)
1879 {
1880         struct ieee80211_sub_if_data *sdata;
1881         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1882
1883         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1884         return 0;
1885 }
1886
1887 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1888 {
1889         return (mask >> (parm-1)) & 0x1;
1890 }
1891
1892 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1893                 const struct mesh_setup *setup)
1894 {
1895         u8 *new_ie;
1896         const u8 *old_ie;
1897         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1898                                         struct ieee80211_sub_if_data, u.mesh);
1899
1900         /* allocate information elements */
1901         new_ie = NULL;
1902         old_ie = ifmsh->ie;
1903
1904         if (setup->ie_len) {
1905                 new_ie = kmemdup(setup->ie, setup->ie_len,
1906                                 GFP_KERNEL);
1907                 if (!new_ie)
1908                         return -ENOMEM;
1909         }
1910         ifmsh->ie_len = setup->ie_len;
1911         ifmsh->ie = new_ie;
1912         kfree(old_ie);
1913
1914         /* now copy the rest of the setup parameters */
1915         ifmsh->mesh_id_len = setup->mesh_id_len;
1916         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1917         ifmsh->mesh_sp_id = setup->sync_method;
1918         ifmsh->mesh_pp_id = setup->path_sel_proto;
1919         ifmsh->mesh_pm_id = setup->path_metric;
1920         ifmsh->user_mpm = setup->user_mpm;
1921         ifmsh->mesh_auth_id = setup->auth_id;
1922         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1923         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1924         if (setup->is_authenticated)
1925                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1926         if (setup->is_secure)
1927                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1928
1929         /* mcast rate setting in Mesh Node */
1930         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1931                                                 sizeof(setup->mcast_rate));
1932         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1933
1934         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1935         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1936
1937         return 0;
1938 }
1939
1940 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1941                                         struct net_device *dev, u32 mask,
1942                                         const struct mesh_config *nconf)
1943 {
1944         struct mesh_config *conf;
1945         struct ieee80211_sub_if_data *sdata;
1946         struct ieee80211_if_mesh *ifmsh;
1947
1948         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1949         ifmsh = &sdata->u.mesh;
1950
1951         /* Set the config options which we are interested in setting */
1952         conf = &(sdata->u.mesh.mshcfg);
1953         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1954                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1955         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1956                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1957         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1958                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1959         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1960                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1961         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1962                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1963         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1964                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1965         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1966                 conf->element_ttl = nconf->element_ttl;
1967         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1968                 if (ifmsh->user_mpm)
1969                         return -EBUSY;
1970                 conf->auto_open_plinks = nconf->auto_open_plinks;
1971         }
1972         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1973                 conf->dot11MeshNbrOffsetMaxNeighbor =
1974                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1975         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1976                 conf->dot11MeshHWMPmaxPREQretries =
1977                         nconf->dot11MeshHWMPmaxPREQretries;
1978         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1979                 conf->path_refresh_time = nconf->path_refresh_time;
1980         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1981                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1982         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1983                 conf->dot11MeshHWMPactivePathTimeout =
1984                         nconf->dot11MeshHWMPactivePathTimeout;
1985         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1986                 conf->dot11MeshHWMPpreqMinInterval =
1987                         nconf->dot11MeshHWMPpreqMinInterval;
1988         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1989                 conf->dot11MeshHWMPperrMinInterval =
1990                         nconf->dot11MeshHWMPperrMinInterval;
1991         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1992                            mask))
1993                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1994                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1995         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1996                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1997                 ieee80211_mesh_root_setup(ifmsh);
1998         }
1999         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2000                 /* our current gate announcement implementation rides on root
2001                  * announcements, so require this ifmsh to also be a root node
2002                  * */
2003                 if (nconf->dot11MeshGateAnnouncementProtocol &&
2004                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2005                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2006                         ieee80211_mesh_root_setup(ifmsh);
2007                 }
2008                 conf->dot11MeshGateAnnouncementProtocol =
2009                         nconf->dot11MeshGateAnnouncementProtocol;
2010         }
2011         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2012                 conf->dot11MeshHWMPRannInterval =
2013                         nconf->dot11MeshHWMPRannInterval;
2014         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2015                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2016         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2017                 /* our RSSI threshold implementation is supported only for
2018                  * devices that report signal in dBm.
2019                  */
2020                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2021                         return -ENOTSUPP;
2022                 conf->rssi_threshold = nconf->rssi_threshold;
2023         }
2024         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2025                 conf->ht_opmode = nconf->ht_opmode;
2026                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2027                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
2028         }
2029         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2030                 conf->dot11MeshHWMPactivePathToRootTimeout =
2031                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2032         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2033                 conf->dot11MeshHWMProotInterval =
2034                         nconf->dot11MeshHWMProotInterval;
2035         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2036                 conf->dot11MeshHWMPconfirmationInterval =
2037                         nconf->dot11MeshHWMPconfirmationInterval;
2038         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2039                 conf->power_mode = nconf->power_mode;
2040                 ieee80211_mps_local_status_update(sdata);
2041         }
2042         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2043                 conf->dot11MeshAwakeWindowDuration =
2044                         nconf->dot11MeshAwakeWindowDuration;
2045         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2046                 conf->plink_timeout = nconf->plink_timeout;
2047         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2048                 conf->dot11MeshConnectedToMeshGate =
2049                         nconf->dot11MeshConnectedToMeshGate;
2050         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2051         return 0;
2052 }
2053
2054 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2055                                const struct mesh_config *conf,
2056                                const struct mesh_setup *setup)
2057 {
2058         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2059         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2060         int err;
2061
2062         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2063         err = copy_mesh_setup(ifmsh, setup);
2064         if (err)
2065                 return err;
2066
2067         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2068
2069         /* can mesh use other SMPS modes? */
2070         sdata->smps_mode = IEEE80211_SMPS_OFF;
2071         sdata->needed_rx_chains = sdata->local->rx_chains;
2072
2073         mutex_lock(&sdata->local->mtx);
2074         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2075                                         IEEE80211_CHANCTX_SHARED);
2076         mutex_unlock(&sdata->local->mtx);
2077         if (err)
2078                 return err;
2079
2080         return ieee80211_start_mesh(sdata);
2081 }
2082
2083 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2084 {
2085         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2086
2087         ieee80211_stop_mesh(sdata);
2088         mutex_lock(&sdata->local->mtx);
2089         ieee80211_vif_release_channel(sdata);
2090         mutex_unlock(&sdata->local->mtx);
2091
2092         return 0;
2093 }
2094 #endif
2095
2096 static int ieee80211_change_bss(struct wiphy *wiphy,
2097                                 struct net_device *dev,
2098                                 struct bss_parameters *params)
2099 {
2100         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2101         struct ieee80211_supported_band *sband;
2102         u32 changed = 0;
2103
2104         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2105                 return -ENOENT;
2106
2107         sband = ieee80211_get_sband(sdata);
2108         if (!sband)
2109                 return -EINVAL;
2110
2111         if (params->use_cts_prot >= 0) {
2112                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2113                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2114         }
2115         if (params->use_short_preamble >= 0) {
2116                 sdata->vif.bss_conf.use_short_preamble =
2117                         params->use_short_preamble;
2118                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2119         }
2120
2121         if (!sdata->vif.bss_conf.use_short_slot &&
2122             sband->band == NL80211_BAND_5GHZ) {
2123                 sdata->vif.bss_conf.use_short_slot = true;
2124                 changed |= BSS_CHANGED_ERP_SLOT;
2125         }
2126
2127         if (params->use_short_slot_time >= 0) {
2128                 sdata->vif.bss_conf.use_short_slot =
2129                         params->use_short_slot_time;
2130                 changed |= BSS_CHANGED_ERP_SLOT;
2131         }
2132
2133         if (params->basic_rates) {
2134                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2135                                          wiphy->bands[sband->band],
2136                                          params->basic_rates,
2137                                          params->basic_rates_len,
2138                                          &sdata->vif.bss_conf.basic_rates);
2139                 changed |= BSS_CHANGED_BASIC_RATES;
2140                 ieee80211_check_rate_mask(sdata);
2141         }
2142
2143         if (params->ap_isolate >= 0) {
2144                 if (params->ap_isolate)
2145                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2146                 else
2147                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2148                 ieee80211_check_fast_rx_iface(sdata);
2149         }
2150
2151         if (params->ht_opmode >= 0) {
2152                 sdata->vif.bss_conf.ht_operation_mode =
2153                         (u16) params->ht_opmode;
2154                 changed |= BSS_CHANGED_HT;
2155         }
2156
2157         if (params->p2p_ctwindow >= 0) {
2158                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2159                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2160                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2161                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2162                 changed |= BSS_CHANGED_P2P_PS;
2163         }
2164
2165         if (params->p2p_opp_ps > 0) {
2166                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2167                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2168                 changed |= BSS_CHANGED_P2P_PS;
2169         } else if (params->p2p_opp_ps == 0) {
2170                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2171                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2172                 changed |= BSS_CHANGED_P2P_PS;
2173         }
2174
2175         ieee80211_bss_info_change_notify(sdata, changed);
2176
2177         return 0;
2178 }
2179
2180 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2181                                     struct net_device *dev,
2182                                     struct ieee80211_txq_params *params)
2183 {
2184         struct ieee80211_local *local = wiphy_priv(wiphy);
2185         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2186         struct ieee80211_tx_queue_params p;
2187
2188         if (!local->ops->conf_tx)
2189                 return -EOPNOTSUPP;
2190
2191         if (local->hw.queues < IEEE80211_NUM_ACS)
2192                 return -EOPNOTSUPP;
2193
2194         memset(&p, 0, sizeof(p));
2195         p.aifs = params->aifs;
2196         p.cw_max = params->cwmax;
2197         p.cw_min = params->cwmin;
2198         p.txop = params->txop;
2199
2200         /*
2201          * Setting tx queue params disables u-apsd because it's only
2202          * called in master mode.
2203          */
2204         p.uapsd = false;
2205
2206         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2207
2208         sdata->tx_conf[params->ac] = p;
2209         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2210                 wiphy_debug(local->hw.wiphy,
2211                             "failed to set TX queue parameters for AC %d\n",
2212                             params->ac);
2213                 return -EINVAL;
2214         }
2215
2216         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2217
2218         return 0;
2219 }
2220
2221 #ifdef CONFIG_PM
2222 static int ieee80211_suspend(struct wiphy *wiphy,
2223                              struct cfg80211_wowlan *wowlan)
2224 {
2225         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2226 }
2227
2228 static int ieee80211_resume(struct wiphy *wiphy)
2229 {
2230         return __ieee80211_resume(wiphy_priv(wiphy));
2231 }
2232 #else
2233 #define ieee80211_suspend NULL
2234 #define ieee80211_resume NULL
2235 #endif
2236
2237 static int ieee80211_scan(struct wiphy *wiphy,
2238                           struct cfg80211_scan_request *req)
2239 {
2240         struct ieee80211_sub_if_data *sdata;
2241
2242         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2243
2244         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2245         case NL80211_IFTYPE_STATION:
2246         case NL80211_IFTYPE_ADHOC:
2247         case NL80211_IFTYPE_MESH_POINT:
2248         case NL80211_IFTYPE_P2P_CLIENT:
2249         case NL80211_IFTYPE_P2P_DEVICE:
2250                 break;
2251         case NL80211_IFTYPE_P2P_GO:
2252                 if (sdata->local->ops->hw_scan)
2253                         break;
2254                 /*
2255                  * FIXME: implement NoA while scanning in software,
2256                  * for now fall through to allow scanning only when
2257                  * beaconing hasn't been configured yet
2258                  */
2259                 /* fall through */
2260         case NL80211_IFTYPE_AP:
2261                 /*
2262                  * If the scan has been forced (and the driver supports
2263                  * forcing), don't care about being beaconing already.
2264                  * This will create problems to the attached stations (e.g. all
2265                  * the  frames sent while scanning on other channel will be
2266                  * lost)
2267                  */
2268                 if (sdata->u.ap.beacon &&
2269                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2270                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2271                         return -EOPNOTSUPP;
2272                 break;
2273         case NL80211_IFTYPE_NAN:
2274         default:
2275                 return -EOPNOTSUPP;
2276         }
2277
2278         return ieee80211_request_scan(sdata, req);
2279 }
2280
2281 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2282 {
2283         ieee80211_scan_cancel(wiphy_priv(wiphy));
2284 }
2285
2286 static int
2287 ieee80211_sched_scan_start(struct wiphy *wiphy,
2288                            struct net_device *dev,
2289                            struct cfg80211_sched_scan_request *req)
2290 {
2291         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2292
2293         if (!sdata->local->ops->sched_scan_start)
2294                 return -EOPNOTSUPP;
2295
2296         return ieee80211_request_sched_scan_start(sdata, req);
2297 }
2298
2299 static int
2300 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2301                           u64 reqid)
2302 {
2303         struct ieee80211_local *local = wiphy_priv(wiphy);
2304
2305         if (!local->ops->sched_scan_stop)
2306                 return -EOPNOTSUPP;
2307
2308         return ieee80211_request_sched_scan_stop(local);
2309 }
2310
2311 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2312                           struct cfg80211_auth_request *req)
2313 {
2314         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2315 }
2316
2317 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2318                            struct cfg80211_assoc_request *req)
2319 {
2320         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2321 }
2322
2323 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2324                             struct cfg80211_deauth_request *req)
2325 {
2326         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2327 }
2328
2329 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2330                               struct cfg80211_disassoc_request *req)
2331 {
2332         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2333 }
2334
2335 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2336                                struct cfg80211_ibss_params *params)
2337 {
2338         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2339 }
2340
2341 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2342 {
2343         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2344 }
2345
2346 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2347                               struct ocb_setup *setup)
2348 {
2349         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2350 }
2351
2352 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2353 {
2354         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2355 }
2356
2357 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2358                                     int rate[NUM_NL80211_BANDS])
2359 {
2360         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2361
2362         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2363                sizeof(int) * NUM_NL80211_BANDS);
2364
2365         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
2366
2367         return 0;
2368 }
2369
2370 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2371 {
2372         struct ieee80211_local *local = wiphy_priv(wiphy);
2373         int err;
2374
2375         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2376                 ieee80211_check_fast_xmit_all(local);
2377
2378                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2379
2380                 if (err) {
2381                         ieee80211_check_fast_xmit_all(local);
2382                         return err;
2383                 }
2384         }
2385
2386         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2387             (changed & WIPHY_PARAM_DYN_ACK)) {
2388                 s16 coverage_class;
2389
2390                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2391                                         wiphy->coverage_class : -1;
2392                 err = drv_set_coverage_class(local, coverage_class);
2393
2394                 if (err)
2395                         return err;
2396         }
2397
2398         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2399                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2400
2401                 if (err)
2402                         return err;
2403         }
2404
2405         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2406                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2407                         return -EINVAL;
2408                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2409         }
2410         if (changed & WIPHY_PARAM_RETRY_LONG) {
2411                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2412                         return -EINVAL;
2413                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2414         }
2415         if (changed &
2416             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2417                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2418
2419         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2420                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2421                        WIPHY_PARAM_TXQ_QUANTUM))
2422                 ieee80211_txq_set_params(local);
2423
2424         return 0;
2425 }
2426
2427 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2428                                   struct wireless_dev *wdev,
2429                                   enum nl80211_tx_power_setting type, int mbm)
2430 {
2431         struct ieee80211_local *local = wiphy_priv(wiphy);
2432         struct ieee80211_sub_if_data *sdata;
2433         enum nl80211_tx_power_setting txp_type = type;
2434         bool update_txp_type = false;
2435         bool has_monitor = false;
2436
2437         if (wdev) {
2438                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2439
2440                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2441                         sdata = rtnl_dereference(local->monitor_sdata);
2442                         if (!sdata)
2443                                 return -EOPNOTSUPP;
2444                 }
2445
2446                 switch (type) {
2447                 case NL80211_TX_POWER_AUTOMATIC:
2448                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2449                         txp_type = NL80211_TX_POWER_LIMITED;
2450                         break;
2451                 case NL80211_TX_POWER_LIMITED:
2452                 case NL80211_TX_POWER_FIXED:
2453                         if (mbm < 0 || (mbm % 100))
2454                                 return -EOPNOTSUPP;
2455                         sdata->user_power_level = MBM_TO_DBM(mbm);
2456                         break;
2457                 }
2458
2459                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2460                         update_txp_type = true;
2461                         sdata->vif.bss_conf.txpower_type = txp_type;
2462                 }
2463
2464                 ieee80211_recalc_txpower(sdata, update_txp_type);
2465
2466                 return 0;
2467         }
2468
2469         switch (type) {
2470         case NL80211_TX_POWER_AUTOMATIC:
2471                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2472                 txp_type = NL80211_TX_POWER_LIMITED;
2473                 break;
2474         case NL80211_TX_POWER_LIMITED:
2475         case NL80211_TX_POWER_FIXED:
2476                 if (mbm < 0 || (mbm % 100))
2477                         return -EOPNOTSUPP;
2478                 local->user_power_level = MBM_TO_DBM(mbm);
2479                 break;
2480         }
2481
2482         mutex_lock(&local->iflist_mtx);
2483         list_for_each_entry(sdata, &local->interfaces, list) {
2484                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2485                         has_monitor = true;
2486                         continue;
2487                 }
2488                 sdata->user_power_level = local->user_power_level;
2489                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2490                         update_txp_type = true;
2491                 sdata->vif.bss_conf.txpower_type = txp_type;
2492         }
2493         list_for_each_entry(sdata, &local->interfaces, list) {
2494                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2495                         continue;
2496                 ieee80211_recalc_txpower(sdata, update_txp_type);
2497         }
2498         mutex_unlock(&local->iflist_mtx);
2499
2500         if (has_monitor) {
2501                 sdata = rtnl_dereference(local->monitor_sdata);
2502                 if (sdata) {
2503                         sdata->user_power_level = local->user_power_level;
2504                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2505                                 update_txp_type = true;
2506                         sdata->vif.bss_conf.txpower_type = txp_type;
2507
2508                         ieee80211_recalc_txpower(sdata, update_txp_type);
2509                 }
2510         }
2511
2512         return 0;
2513 }
2514
2515 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2516                                   struct wireless_dev *wdev,
2517                                   int *dbm)
2518 {
2519         struct ieee80211_local *local = wiphy_priv(wiphy);
2520         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2521
2522         if (local->ops->get_txpower)
2523                 return drv_get_txpower(local, sdata, dbm);
2524
2525         if (!local->use_chanctx)
2526                 *dbm = local->hw.conf.power_level;
2527         else
2528                 *dbm = sdata->vif.bss_conf.txpower;
2529
2530         return 0;
2531 }
2532
2533 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2534                                   const u8 *addr)
2535 {
2536         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2537
2538         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2539
2540         return 0;
2541 }
2542
2543 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2544 {
2545         struct ieee80211_local *local = wiphy_priv(wiphy);
2546
2547         drv_rfkill_poll(local);
2548 }
2549
2550 #ifdef CONFIG_NL80211_TESTMODE
2551 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2552                                   struct wireless_dev *wdev,
2553                                   void *data, int len)
2554 {
2555         struct ieee80211_local *local = wiphy_priv(wiphy);
2556         struct ieee80211_vif *vif = NULL;
2557
2558         if (!local->ops->testmode_cmd)
2559                 return -EOPNOTSUPP;
2560
2561         if (wdev) {
2562                 struct ieee80211_sub_if_data *sdata;
2563
2564                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2565                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2566                         vif = &sdata->vif;
2567         }
2568
2569         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2570 }
2571
2572 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2573                                    struct sk_buff *skb,
2574                                    struct netlink_callback *cb,
2575                                    void *data, int len)
2576 {
2577         struct ieee80211_local *local = wiphy_priv(wiphy);
2578
2579         if (!local->ops->testmode_dump)
2580                 return -EOPNOTSUPP;
2581
2582         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2583 }
2584 #endif
2585
2586 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2587                                 enum ieee80211_smps_mode smps_mode)
2588 {
2589         struct sta_info *sta;
2590         enum ieee80211_smps_mode old_req;
2591
2592         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2593                 return -EINVAL;
2594
2595         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2596                 return 0;
2597
2598         old_req = sdata->u.ap.req_smps;
2599         sdata->u.ap.req_smps = smps_mode;
2600
2601         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2602         if (old_req == smps_mode ||
2603             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2604                 return 0;
2605
2606         ht_dbg(sdata,
2607                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2608                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2609
2610         mutex_lock(&sdata->local->sta_mtx);
2611         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2612                 /*
2613                  * Only stations associated to our AP and
2614                  * associated VLANs
2615                  */
2616                 if (sta->sdata->bss != &sdata->u.ap)
2617                         continue;
2618
2619                 /* This station doesn't support MIMO - skip it */
2620                 if (sta_info_tx_streams(sta) == 1)
2621                         continue;
2622
2623                 /*
2624                  * Don't wake up a STA just to send the action frame
2625                  * unless we are getting more restrictive.
2626                  */
2627                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2628                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2629                                                    smps_mode)) {
2630                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2631                                sta->sta.addr);
2632                         continue;
2633                 }
2634
2635                 /*
2636                  * If the STA is not authorized, wait until it gets
2637                  * authorized and the action frame will be sent then.
2638                  */
2639                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2640                         continue;
2641
2642                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2643                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2644                                            sdata->vif.bss_conf.bssid);
2645         }
2646         mutex_unlock(&sdata->local->sta_mtx);
2647
2648         sdata->smps_mode = smps_mode;
2649         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2650
2651         return 0;
2652 }
2653
2654 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2655                                  enum ieee80211_smps_mode smps_mode)
2656 {
2657         const u8 *ap;
2658         enum ieee80211_smps_mode old_req;
2659         int err;
2660         struct sta_info *sta;
2661         bool tdls_peer_found = false;
2662
2663         lockdep_assert_held(&sdata->wdev.mtx);
2664
2665         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2666                 return -EINVAL;
2667
2668         old_req = sdata->u.mgd.req_smps;
2669         sdata->u.mgd.req_smps = smps_mode;
2670
2671         if (old_req == smps_mode &&
2672             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2673                 return 0;
2674
2675         /*
2676          * If not associated, or current association is not an HT
2677          * association, there's no need to do anything, just store
2678          * the new value until we associate.
2679          */
2680         if (!sdata->u.mgd.associated ||
2681             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2682                 return 0;
2683
2684         ap = sdata->u.mgd.associated->bssid;
2685
2686         rcu_read_lock();
2687         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2688                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2689                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2690                         continue;
2691
2692                 tdls_peer_found = true;
2693                 break;
2694         }
2695         rcu_read_unlock();
2696
2697         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2698                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2699                         smps_mode = IEEE80211_SMPS_OFF;
2700                 else
2701                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2702         }
2703
2704         /* send SM PS frame to AP */
2705         err = ieee80211_send_smps_action(sdata, smps_mode,
2706                                          ap, ap);
2707         if (err)
2708                 sdata->u.mgd.req_smps = old_req;
2709         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2710                 ieee80211_teardown_tdls_peers(sdata);
2711
2712         return err;
2713 }
2714
2715 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2716                                     bool enabled, int timeout)
2717 {
2718         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2719         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2720
2721         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2722                 return -EOPNOTSUPP;
2723
2724         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2725                 return -EOPNOTSUPP;
2726
2727         if (enabled == sdata->u.mgd.powersave &&
2728             timeout == local->dynamic_ps_forced_timeout)
2729                 return 0;
2730
2731         sdata->u.mgd.powersave = enabled;
2732         local->dynamic_ps_forced_timeout = timeout;
2733
2734         /* no change, but if automatic follow powersave */
2735         sdata_lock(sdata);
2736         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2737         sdata_unlock(sdata);
2738
2739         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2740                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2741
2742         ieee80211_recalc_ps(local);
2743         ieee80211_recalc_ps_vif(sdata);
2744         ieee80211_check_fast_rx_iface(sdata);
2745
2746         return 0;
2747 }
2748
2749 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2750                                          struct net_device *dev,
2751                                          s32 rssi_thold, u32 rssi_hyst)
2752 {
2753         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2754         struct ieee80211_vif *vif = &sdata->vif;
2755         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2756
2757         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2758             rssi_hyst == bss_conf->cqm_rssi_hyst)
2759                 return 0;
2760
2761         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2762             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2763                 return -EOPNOTSUPP;
2764
2765         bss_conf->cqm_rssi_thold = rssi_thold;
2766         bss_conf->cqm_rssi_hyst = rssi_hyst;
2767         bss_conf->cqm_rssi_low = 0;
2768         bss_conf->cqm_rssi_high = 0;
2769         sdata->u.mgd.last_cqm_event_signal = 0;
2770
2771         /* tell the driver upon association, unless already associated */
2772         if (sdata->u.mgd.associated &&
2773             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2774                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2775
2776         return 0;
2777 }
2778
2779 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2780                                                struct net_device *dev,
2781                                                s32 rssi_low, s32 rssi_high)
2782 {
2783         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2784         struct ieee80211_vif *vif = &sdata->vif;
2785         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2786
2787         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2788                 return -EOPNOTSUPP;
2789
2790         bss_conf->cqm_rssi_low = rssi_low;
2791         bss_conf->cqm_rssi_high = rssi_high;
2792         bss_conf->cqm_rssi_thold = 0;
2793         bss_conf->cqm_rssi_hyst = 0;
2794         sdata->u.mgd.last_cqm_event_signal = 0;
2795
2796         /* tell the driver upon association, unless already associated */
2797         if (sdata->u.mgd.associated &&
2798             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2799                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2800
2801         return 0;
2802 }
2803
2804 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2805                                       struct net_device *dev,
2806                                       const u8 *addr,
2807                                       const struct cfg80211_bitrate_mask *mask)
2808 {
2809         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2810         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2811         int i, ret;
2812
2813         if (!ieee80211_sdata_running(sdata))
2814                 return -ENETDOWN;
2815
2816         /*
2817          * If active validate the setting and reject it if it doesn't leave
2818          * at least one basic rate usable, since we really have to be able
2819          * to send something, and if we're an AP we have to be able to do
2820          * so at a basic rate so that all clients can receive it.
2821          */
2822         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2823             sdata->vif.bss_conf.chandef.chan) {
2824                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2825                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2826
2827                 if (!(mask->control[band].legacy & basic_rates))
2828                         return -EINVAL;
2829         }
2830
2831         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2832                 ret = drv_set_bitrate_mask(local, sdata, mask);
2833                 if (ret)
2834                         return ret;
2835         }
2836
2837         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2838                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2839                 int j;
2840
2841                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2842                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2843                        sizeof(mask->control[i].ht_mcs));
2844                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2845                        mask->control[i].vht_mcs,
2846                        sizeof(mask->control[i].vht_mcs));
2847
2848                 sdata->rc_has_mcs_mask[i] = false;
2849                 sdata->rc_has_vht_mcs_mask[i] = false;
2850                 if (!sband)
2851                         continue;
2852
2853                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2854                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2855                                 sdata->rc_has_mcs_mask[i] = true;
2856                                 break;
2857                         }
2858                 }
2859
2860                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2861                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2862                                 sdata->rc_has_vht_mcs_mask[i] = true;
2863                                 break;
2864                         }
2865                 }
2866         }
2867
2868         return 0;
2869 }
2870
2871 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2872                                            struct net_device *dev,
2873                                            struct cfg80211_chan_def *chandef,
2874                                            u32 cac_time_ms)
2875 {
2876         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2877         struct ieee80211_local *local = sdata->local;
2878         int err;
2879
2880         mutex_lock(&local->mtx);
2881         if (!list_empty(&local->roc_list) || local->scanning) {
2882                 err = -EBUSY;
2883                 goto out_unlock;
2884         }
2885
2886         /* whatever, but channel contexts should not complain about that one */
2887         sdata->smps_mode = IEEE80211_SMPS_OFF;
2888         sdata->needed_rx_chains = local->rx_chains;
2889
2890         err = ieee80211_vif_use_channel(sdata, chandef,
2891                                         IEEE80211_CHANCTX_SHARED);
2892         if (err)
2893                 goto out_unlock;
2894
2895         ieee80211_queue_delayed_work(&sdata->local->hw,
2896                                      &sdata->dfs_cac_timer_work,
2897                                      msecs_to_jiffies(cac_time_ms));
2898
2899  out_unlock:
2900         mutex_unlock(&local->mtx);
2901         return err;
2902 }
2903
2904 static struct cfg80211_beacon_data *
2905 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2906 {
2907         struct cfg80211_beacon_data *new_beacon;
2908         u8 *pos;
2909         int len;
2910
2911         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2912               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2913               beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
2914
2915         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2916         if (!new_beacon)
2917                 return NULL;
2918
2919         pos = (u8 *)(new_beacon + 1);
2920         if (beacon->head_len) {
2921                 new_beacon->head_len = beacon->head_len;
2922                 new_beacon->head = pos;
2923                 memcpy(pos, beacon->head, beacon->head_len);
2924                 pos += beacon->head_len;
2925         }
2926         if (beacon->tail_len) {
2927                 new_beacon->tail_len = beacon->tail_len;
2928                 new_beacon->tail = pos;
2929                 memcpy(pos, beacon->tail, beacon->tail_len);
2930                 pos += beacon->tail_len;
2931         }
2932         if (beacon->beacon_ies_len) {
2933                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2934                 new_beacon->beacon_ies = pos;
2935                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2936                 pos += beacon->beacon_ies_len;
2937         }
2938         if (beacon->proberesp_ies_len) {
2939                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2940                 new_beacon->proberesp_ies = pos;
2941                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2942                 pos += beacon->proberesp_ies_len;
2943         }
2944         if (beacon->assocresp_ies_len) {
2945                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2946                 new_beacon->assocresp_ies = pos;
2947                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2948                 pos += beacon->assocresp_ies_len;
2949         }
2950         if (beacon->probe_resp_len) {
2951                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2952                 new_beacon->probe_resp = pos;
2953                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2954                 pos += beacon->probe_resp_len;
2955         }
2956
2957         /* might copy -1, meaning no changes requested */
2958         new_beacon->ftm_responder = beacon->ftm_responder;
2959         if (beacon->lci) {
2960                 new_beacon->lci_len = beacon->lci_len;
2961                 new_beacon->lci = pos;
2962                 memcpy(pos, beacon->lci, beacon->lci_len);
2963                 pos += beacon->lci_len;
2964         }
2965         if (beacon->civicloc) {
2966                 new_beacon->civicloc_len = beacon->civicloc_len;
2967                 new_beacon->civicloc = pos;
2968                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
2969                 pos += beacon->civicloc_len;
2970         }
2971
2972         return new_beacon;
2973 }
2974
2975 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2976 {
2977         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2978
2979         ieee80211_queue_work(&sdata->local->hw,
2980                              &sdata->csa_finalize_work);
2981 }
2982 EXPORT_SYMBOL(ieee80211_csa_finish);
2983
2984 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2985                                           u32 *changed)
2986 {
2987         int err;
2988
2989         switch (sdata->vif.type) {
2990         case NL80211_IFTYPE_AP:
2991                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2992                                               NULL);
2993                 kfree(sdata->u.ap.next_beacon);
2994                 sdata->u.ap.next_beacon = NULL;
2995
2996                 if (err < 0)
2997                         return err;
2998                 *changed |= err;
2999                 break;
3000         case NL80211_IFTYPE_ADHOC:
3001                 err = ieee80211_ibss_finish_csa(sdata);
3002                 if (err < 0)
3003                         return err;
3004                 *changed |= err;
3005                 break;
3006 #ifdef CONFIG_MAC80211_MESH
3007         case NL80211_IFTYPE_MESH_POINT:
3008                 err = ieee80211_mesh_finish_csa(sdata);
3009                 if (err < 0)
3010                         return err;
3011                 *changed |= err;
3012                 break;
3013 #endif
3014         default:
3015                 WARN_ON(1);
3016                 return -EINVAL;
3017         }
3018
3019         return 0;
3020 }
3021
3022 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3023 {
3024         struct ieee80211_local *local = sdata->local;
3025         u32 changed = 0;
3026         int err;
3027
3028         sdata_assert_lock(sdata);
3029         lockdep_assert_held(&local->mtx);
3030         lockdep_assert_held(&local->chanctx_mtx);
3031
3032         /*
3033          * using reservation isn't immediate as it may be deferred until later
3034          * with multi-vif. once reservation is complete it will re-schedule the
3035          * work with no reserved_chanctx so verify chandef to check if it
3036          * completed successfully
3037          */
3038
3039         if (sdata->reserved_chanctx) {
3040                 /*
3041                  * with multi-vif csa driver may call ieee80211_csa_finish()
3042                  * many times while waiting for other interfaces to use their
3043                  * reservations
3044                  */
3045                 if (sdata->reserved_ready)
3046                         return 0;
3047
3048                 return ieee80211_vif_use_reserved_context(sdata);
3049         }
3050
3051         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3052                                         &sdata->csa_chandef))
3053                 return -EINVAL;
3054
3055         sdata->vif.csa_active = false;
3056
3057         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3058         if (err)
3059                 return err;
3060
3061         ieee80211_bss_info_change_notify(sdata, changed);
3062
3063         if (sdata->csa_block_tx) {
3064                 ieee80211_wake_vif_queues(local, sdata,
3065                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3066                 sdata->csa_block_tx = false;
3067         }
3068
3069         err = drv_post_channel_switch(sdata);
3070         if (err)
3071                 return err;
3072
3073         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3074
3075         return 0;
3076 }
3077
3078 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3079 {
3080         if (__ieee80211_csa_finalize(sdata)) {
3081                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3082                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3083                                     GFP_KERNEL);
3084         }
3085 }
3086
3087 void ieee80211_csa_finalize_work(struct work_struct *work)
3088 {
3089         struct ieee80211_sub_if_data *sdata =
3090                 container_of(work, struct ieee80211_sub_if_data,
3091                              csa_finalize_work);
3092         struct ieee80211_local *local = sdata->local;
3093
3094         sdata_lock(sdata);
3095         mutex_lock(&local->mtx);
3096         mutex_lock(&local->chanctx_mtx);
3097
3098         /* AP might have been stopped while waiting for the lock. */
3099         if (!sdata->vif.csa_active)
3100                 goto unlock;
3101
3102         if (!ieee80211_sdata_running(sdata))
3103                 goto unlock;
3104
3105         ieee80211_csa_finalize(sdata);
3106
3107 unlock:
3108         mutex_unlock(&local->chanctx_mtx);
3109         mutex_unlock(&local->mtx);
3110         sdata_unlock(sdata);
3111 }
3112
3113 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3114                                     struct cfg80211_csa_settings *params,
3115                                     u32 *changed)
3116 {
3117         struct ieee80211_csa_settings csa = {};
3118         int err;
3119
3120         switch (sdata->vif.type) {
3121         case NL80211_IFTYPE_AP:
3122                 sdata->u.ap.next_beacon =
3123                         cfg80211_beacon_dup(&params->beacon_after);
3124                 if (!sdata->u.ap.next_beacon)
3125                         return -ENOMEM;
3126
3127                 /*
3128                  * With a count of 0, we don't have to wait for any
3129                  * TBTT before switching, so complete the CSA
3130                  * immediately.  In theory, with a count == 1 we
3131                  * should delay the switch until just before the next
3132                  * TBTT, but that would complicate things so we switch
3133                  * immediately too.  If we would delay the switch
3134                  * until the next TBTT, we would have to set the probe
3135                  * response here.
3136                  *
3137                  * TODO: A channel switch with count <= 1 without
3138                  * sending a CSA action frame is kind of useless,
3139                  * because the clients won't know we're changing
3140                  * channels.  The action frame must be implemented
3141                  * either here or in the userspace.
3142                  */
3143                 if (params->count <= 1)
3144                         break;
3145
3146                 if ((params->n_counter_offsets_beacon >
3147                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3148                     (params->n_counter_offsets_presp >
3149                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3150                         return -EINVAL;
3151
3152                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3153                 csa.counter_offsets_presp = params->counter_offsets_presp;
3154                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3155                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3156                 csa.count = params->count;
3157
3158                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3159                 if (err < 0) {
3160                         kfree(sdata->u.ap.next_beacon);
3161                         return err;
3162                 }
3163                 *changed |= err;
3164
3165                 break;
3166         case NL80211_IFTYPE_ADHOC:
3167                 if (!sdata->vif.bss_conf.ibss_joined)
3168                         return -EINVAL;
3169
3170                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3171                         return -EINVAL;
3172
3173                 switch (params->chandef.width) {
3174                 case NL80211_CHAN_WIDTH_40:
3175                         if (cfg80211_get_chandef_type(&params->chandef) !=
3176                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3177                                 return -EINVAL;
3178                 case NL80211_CHAN_WIDTH_5:
3179                 case NL80211_CHAN_WIDTH_10:
3180                 case NL80211_CHAN_WIDTH_20_NOHT:
3181                 case NL80211_CHAN_WIDTH_20:
3182                         break;
3183                 default:
3184                         return -EINVAL;
3185                 }
3186
3187                 /* changes into another band are not supported */
3188                 if (sdata->u.ibss.chandef.chan->band !=
3189                     params->chandef.chan->band)
3190                         return -EINVAL;
3191
3192                 /* see comments in the NL80211_IFTYPE_AP block */
3193                 if (params->count > 1) {
3194                         err = ieee80211_ibss_csa_beacon(sdata, params);
3195                         if (err < 0)
3196                                 return err;
3197                         *changed |= err;
3198                 }
3199
3200                 ieee80211_send_action_csa(sdata, params);
3201
3202                 break;
3203 #ifdef CONFIG_MAC80211_MESH
3204         case NL80211_IFTYPE_MESH_POINT: {
3205                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3206
3207                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3208                         return -EINVAL;
3209
3210                 /* changes into another band are not supported */
3211                 if (sdata->vif.bss_conf.chandef.chan->band !=
3212                     params->chandef.chan->band)
3213                         return -EINVAL;
3214
3215                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3216                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3217                         if (!ifmsh->pre_value)
3218                                 ifmsh->pre_value = 1;
3219                         else
3220                                 ifmsh->pre_value++;
3221                 }
3222
3223                 /* see comments in the NL80211_IFTYPE_AP block */
3224                 if (params->count > 1) {
3225                         err = ieee80211_mesh_csa_beacon(sdata, params);
3226                         if (err < 0) {
3227                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3228                                 return err;
3229                         }
3230                         *changed |= err;
3231                 }
3232
3233                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3234                         ieee80211_send_action_csa(sdata, params);
3235
3236                 break;
3237                 }
3238 #endif
3239         default:
3240                 return -EOPNOTSUPP;
3241         }
3242
3243         return 0;
3244 }
3245
3246 static int
3247 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3248                            struct cfg80211_csa_settings *params)
3249 {
3250         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3251         struct ieee80211_local *local = sdata->local;
3252         struct ieee80211_channel_switch ch_switch;
3253         struct ieee80211_chanctx_conf *conf;
3254         struct ieee80211_chanctx *chanctx;
3255         u32 changed = 0;
3256         int err;
3257
3258         sdata_assert_lock(sdata);
3259         lockdep_assert_held(&local->mtx);
3260
3261         if (!list_empty(&local->roc_list) || local->scanning)
3262                 return -EBUSY;
3263
3264         if (sdata->wdev.cac_started)
3265                 return -EBUSY;
3266
3267         if (cfg80211_chandef_identical(&params->chandef,
3268                                        &sdata->vif.bss_conf.chandef))
3269                 return -EINVAL;
3270
3271         /* don't allow another channel switch if one is already active. */
3272         if (sdata->vif.csa_active)
3273                 return -EBUSY;
3274
3275         mutex_lock(&local->chanctx_mtx);
3276         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3277                                          lockdep_is_held(&local->chanctx_mtx));
3278         if (!conf) {
3279                 err = -EBUSY;
3280                 goto out;
3281         }
3282
3283         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3284
3285         ch_switch.timestamp = 0;
3286         ch_switch.device_timestamp = 0;
3287         ch_switch.block_tx = params->block_tx;
3288         ch_switch.chandef = params->chandef;
3289         ch_switch.count = params->count;
3290
3291         err = drv_pre_channel_switch(sdata, &ch_switch);
3292         if (err)
3293                 goto out;
3294
3295         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3296                                             chanctx->mode,
3297                                             params->radar_required);
3298         if (err)
3299                 goto out;
3300
3301         /* if reservation is invalid then this will fail */
3302         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3303         if (err) {
3304                 ieee80211_vif_unreserve_chanctx(sdata);
3305                 goto out;
3306         }
3307
3308         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3309         if (err) {
3310                 ieee80211_vif_unreserve_chanctx(sdata);
3311                 goto out;
3312         }
3313
3314         sdata->csa_chandef = params->chandef;
3315         sdata->csa_block_tx = params->block_tx;
3316         sdata->vif.csa_active = true;
3317
3318         if (sdata->csa_block_tx)
3319                 ieee80211_stop_vif_queues(local, sdata,
3320                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3321
3322         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3323                                           params->count);
3324
3325         if (changed) {
3326                 ieee80211_bss_info_change_notify(sdata, changed);
3327                 drv_channel_switch_beacon(sdata, &params->chandef);
3328         } else {
3329                 /* if the beacon didn't change, we can finalize immediately */
3330                 ieee80211_csa_finalize(sdata);
3331         }
3332
3333 out:
3334         mutex_unlock(&local->chanctx_mtx);
3335         return err;
3336 }
3337
3338 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3339                              struct cfg80211_csa_settings *params)
3340 {
3341         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3342         struct ieee80211_local *local = sdata->local;
3343         int err;
3344
3345         mutex_lock(&local->mtx);
3346         err = __ieee80211_channel_switch(wiphy, dev, params);
3347         mutex_unlock(&local->mtx);
3348
3349         return err;
3350 }
3351
3352 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3353 {
3354         lockdep_assert_held(&local->mtx);
3355
3356         local->roc_cookie_counter++;
3357
3358         /* wow, you wrapped 64 bits ... more likely a bug */
3359         if (WARN_ON(local->roc_cookie_counter == 0))
3360                 local->roc_cookie_counter++;
3361
3362         return local->roc_cookie_counter;
3363 }
3364
3365 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3366                              u64 *cookie, gfp_t gfp)
3367 {
3368         unsigned long spin_flags;
3369         struct sk_buff *ack_skb;
3370         int id;
3371
3372         ack_skb = skb_copy(skb, gfp);
3373         if (!ack_skb)
3374                 return -ENOMEM;
3375
3376         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3377         id = idr_alloc(&local->ack_status_frames, ack_skb,
3378                        1, 0x10000, GFP_ATOMIC);
3379         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3380
3381         if (id < 0) {
3382                 kfree_skb(ack_skb);
3383                 return -ENOMEM;
3384         }
3385
3386         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3387
3388         *cookie = ieee80211_mgmt_tx_cookie(local);
3389         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3390
3391         return 0;
3392 }
3393
3394 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3395                                           struct wireless_dev *wdev,
3396                                           u16 frame_type, bool reg)
3397 {
3398         struct ieee80211_local *local = wiphy_priv(wiphy);
3399         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3400
3401         switch (frame_type) {
3402         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3403                 if (reg) {
3404                         local->probe_req_reg++;
3405                         sdata->vif.probe_req_reg++;
3406                 } else {
3407                         if (local->probe_req_reg)
3408                                 local->probe_req_reg--;
3409
3410                         if (sdata->vif.probe_req_reg)
3411                                 sdata->vif.probe_req_reg--;
3412                 }
3413
3414                 if (!local->open_count)
3415                         break;
3416
3417                 if (sdata->vif.probe_req_reg == 1)
3418                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3419                                                 FIF_PROBE_REQ);
3420                 else if (sdata->vif.probe_req_reg == 0)
3421                         drv_config_iface_filter(local, sdata, 0,
3422                                                 FIF_PROBE_REQ);
3423
3424                 ieee80211_configure_filter(local);
3425                 break;
3426         default:
3427                 break;
3428         }
3429 }
3430
3431 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3432 {
3433         struct ieee80211_local *local = wiphy_priv(wiphy);
3434
3435         if (local->started)
3436                 return -EOPNOTSUPP;
3437
3438         return drv_set_antenna(local, tx_ant, rx_ant);
3439 }
3440
3441 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3442 {
3443         struct ieee80211_local *local = wiphy_priv(wiphy);
3444
3445         return drv_get_antenna(local, tx_ant, rx_ant);
3446 }
3447
3448 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3449                                     struct net_device *dev,
3450                                     struct cfg80211_gtk_rekey_data *data)
3451 {
3452         struct ieee80211_local *local = wiphy_priv(wiphy);
3453         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3454
3455         if (!local->ops->set_rekey_data)
3456                 return -EOPNOTSUPP;
3457
3458         drv_set_rekey_data(local, sdata, data);
3459
3460         return 0;
3461 }
3462
3463 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3464                                   const u8 *peer, u64 *cookie)
3465 {
3466         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3467         struct ieee80211_local *local = sdata->local;
3468         struct ieee80211_qos_hdr *nullfunc;
3469         struct sk_buff *skb;
3470         int size = sizeof(*nullfunc);
3471         __le16 fc;
3472         bool qos;
3473         struct ieee80211_tx_info *info;
3474         struct sta_info *sta;
3475         struct ieee80211_chanctx_conf *chanctx_conf;
3476         enum nl80211_band band;
3477         int ret;
3478
3479         /* the lock is needed to assign the cookie later */
3480         mutex_lock(&local->mtx);
3481
3482         rcu_read_lock();
3483         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3484         if (WARN_ON(!chanctx_conf)) {
3485                 ret = -EINVAL;
3486                 goto unlock;
3487         }
3488         band = chanctx_conf->def.chan->band;
3489         sta = sta_info_get_bss(sdata, peer);
3490         if (sta) {
3491                 qos = sta->sta.wme;
3492         } else {
3493                 ret = -ENOLINK;
3494                 goto unlock;
3495         }
3496
3497         if (qos) {
3498                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3499                                  IEEE80211_STYPE_QOS_NULLFUNC |
3500                                  IEEE80211_FCTL_FROMDS);
3501         } else {
3502                 size -= 2;
3503                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3504                                  IEEE80211_STYPE_NULLFUNC |
3505                                  IEEE80211_FCTL_FROMDS);
3506         }
3507
3508         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3509         if (!skb) {
3510                 ret = -ENOMEM;
3511                 goto unlock;
3512         }
3513
3514         skb->dev = dev;
3515
3516         skb_reserve(skb, local->hw.extra_tx_headroom);
3517
3518         nullfunc = skb_put(skb, size);
3519         nullfunc->frame_control = fc;
3520         nullfunc->duration_id = 0;
3521         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3522         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3523         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3524         nullfunc->seq_ctrl = 0;
3525
3526         info = IEEE80211_SKB_CB(skb);
3527
3528         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3529                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3530         info->band = band;
3531
3532         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3533         skb->priority = 7;
3534         if (qos)
3535                 nullfunc->qos_ctrl = cpu_to_le16(7);
3536
3537         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3538         if (ret) {
3539                 kfree_skb(skb);
3540                 goto unlock;
3541         }
3542
3543         local_bh_disable();
3544         ieee80211_xmit(sdata, sta, skb, 0);
3545         local_bh_enable();
3546
3547         ret = 0;
3548 unlock:
3549         rcu_read_unlock();
3550         mutex_unlock(&local->mtx);
3551
3552         return ret;
3553 }
3554
3555 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3556                                      struct wireless_dev *wdev,
3557                                      struct cfg80211_chan_def *chandef)
3558 {
3559         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3560         struct ieee80211_local *local = wiphy_priv(wiphy);
3561         struct ieee80211_chanctx_conf *chanctx_conf;
3562         int ret = -ENODATA;
3563
3564         rcu_read_lock();
3565         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3566         if (chanctx_conf) {
3567                 *chandef = sdata->vif.bss_conf.chandef;
3568                 ret = 0;
3569         } else if (local->open_count > 0 &&
3570                    local->open_count == local->monitors &&
3571                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3572                 if (local->use_chanctx)
3573                         *chandef = local->monitor_chandef;
3574                 else
3575                         *chandef = local->_oper_chandef;
3576                 ret = 0;
3577         }
3578         rcu_read_unlock();
3579
3580         return ret;
3581 }
3582
3583 #ifdef CONFIG_PM
3584 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3585 {
3586         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3587 }
3588 #endif
3589
3590 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3591                                  struct net_device *dev,
3592                                  struct cfg80211_qos_map *qos_map)
3593 {
3594         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3595         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3596
3597         if (qos_map) {
3598                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3599                 if (!new_qos_map)
3600                         return -ENOMEM;
3601                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3602         } else {
3603                 /* A NULL qos_map was passed to disable QoS mapping */
3604                 new_qos_map = NULL;
3605         }
3606
3607         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3608         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3609         if (old_qos_map)
3610                 kfree_rcu(old_qos_map, rcu_head);
3611
3612         return 0;
3613 }
3614
3615 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3616                                       struct net_device *dev,
3617                                       struct cfg80211_chan_def *chandef)
3618 {
3619         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3620         int ret;
3621         u32 changed = 0;
3622
3623         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3624         if (ret == 0)
3625                 ieee80211_bss_info_change_notify(sdata, changed);
3626
3627         return ret;
3628 }
3629
3630 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3631                                u8 tsid, const u8 *peer, u8 up,
3632                                u16 admitted_time)
3633 {
3634         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3635         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3636         int ac = ieee802_1d_to_ac[up];
3637
3638         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3639                 return -EOPNOTSUPP;
3640
3641         if (!(sdata->wmm_acm & BIT(up)))
3642                 return -EINVAL;
3643
3644         if (ifmgd->tx_tspec[ac].admitted_time)
3645                 return -EBUSY;
3646
3647         if (admitted_time) {
3648                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3649                 ifmgd->tx_tspec[ac].tsid = tsid;
3650                 ifmgd->tx_tspec[ac].up = up;
3651         }
3652
3653         return 0;
3654 }
3655
3656 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3657                                u8 tsid, const u8 *peer)
3658 {
3659         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3660         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3661         struct ieee80211_local *local = wiphy_priv(wiphy);
3662         int ac;
3663
3664         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3665                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3666
3667                 /* skip unused entries */
3668                 if (!tx_tspec->admitted_time)
3669                         continue;
3670
3671                 if (tx_tspec->tsid != tsid)
3672                         continue;
3673
3674                 /* due to this new packets will be reassigned to non-ACM ACs */
3675                 tx_tspec->up = -1;
3676
3677                 /* Make sure that all packets have been sent to avoid to
3678                  * restore the QoS params on packets that are still on the
3679                  * queues.
3680                  */
3681                 synchronize_net();
3682                 ieee80211_flush_queues(local, sdata, false);
3683
3684                 /* restore the normal QoS parameters
3685                  * (unconditionally to avoid races)
3686                  */
3687                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3688                 tx_tspec->downgraded = false;
3689                 ieee80211_sta_handle_tspec_ac_params(sdata);
3690
3691                 /* finally clear all the data */
3692                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3693
3694                 return 0;
3695         }
3696
3697         return -ENOENT;
3698 }
3699
3700 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3701                                    u8 inst_id,
3702                                    enum nl80211_nan_func_term_reason reason,
3703                                    gfp_t gfp)
3704 {
3705         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3706         struct cfg80211_nan_func *func;
3707         u64 cookie;
3708
3709         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3710                 return;
3711
3712         spin_lock_bh(&sdata->u.nan.func_lock);
3713
3714         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3715         if (WARN_ON(!func)) {
3716                 spin_unlock_bh(&sdata->u.nan.func_lock);
3717                 return;
3718         }
3719
3720         cookie = func->cookie;
3721         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3722
3723         spin_unlock_bh(&sdata->u.nan.func_lock);
3724
3725         cfg80211_free_nan_func(func);
3726
3727         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3728                                      reason, cookie, gfp);
3729 }
3730 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3731
3732 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3733                               struct cfg80211_nan_match_params *match,
3734                               gfp_t gfp)
3735 {
3736         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3737         struct cfg80211_nan_func *func;
3738
3739         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3740                 return;
3741
3742         spin_lock_bh(&sdata->u.nan.func_lock);
3743
3744         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3745         if (WARN_ON(!func)) {
3746                 spin_unlock_bh(&sdata->u.nan.func_lock);
3747                 return;
3748         }
3749         match->cookie = func->cookie;
3750
3751         spin_unlock_bh(&sdata->u.nan.func_lock);
3752
3753         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3754 }
3755 EXPORT_SYMBOL(ieee80211_nan_func_match);
3756
3757 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3758                                               struct net_device *dev,
3759                                               const bool enabled)
3760 {
3761         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3762
3763         sdata->u.ap.multicast_to_unicast = enabled;
3764
3765         return 0;
3766 }
3767
3768 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
3769                               struct txq_info *txqi)
3770 {
3771         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
3772                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
3773                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
3774         }
3775
3776         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
3777                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
3778                 txqstats->backlog_packets = txqi->tin.backlog_packets;
3779         }
3780
3781         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
3782                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
3783                 txqstats->flows = txqi->tin.flows;
3784         }
3785
3786         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
3787                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
3788                 txqstats->drops = txqi->cstats.drop_count;
3789         }
3790
3791         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
3792                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
3793                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
3794         }
3795
3796         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
3797                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
3798                 txqstats->overlimit = txqi->tin.overlimit;
3799         }
3800
3801         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
3802                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
3803                 txqstats->collisions = txqi->tin.collisions;
3804         }
3805
3806         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
3807                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
3808                 txqstats->tx_bytes = txqi->tin.tx_bytes;
3809         }
3810
3811         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
3812                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
3813                 txqstats->tx_packets = txqi->tin.tx_packets;
3814         }
3815 }
3816
3817 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
3818                                    struct wireless_dev *wdev,
3819                                    struct cfg80211_txq_stats *txqstats)
3820 {
3821         struct ieee80211_local *local = wiphy_priv(wiphy);
3822         struct ieee80211_sub_if_data *sdata;
3823         int ret = 0;
3824
3825         if (!local->ops->wake_tx_queue)
3826                 return 1;
3827
3828         spin_lock_bh(&local->fq.lock);
3829         rcu_read_lock();
3830
3831         if (wdev) {
3832                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3833                 if (!sdata->vif.txq) {
3834                         ret = 1;
3835                         goto out;
3836                 }
3837                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
3838         } else {
3839                 /* phy stats */
3840                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
3841                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
3842                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
3843                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
3844                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
3845                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
3846                 txqstats->backlog_packets = local->fq.backlog;
3847                 txqstats->backlog_bytes = local->fq.memory_usage;
3848                 txqstats->overlimit = local->fq.overlimit;
3849                 txqstats->overmemory = local->fq.overmemory;
3850                 txqstats->collisions = local->fq.collisions;
3851                 txqstats->max_flows = local->fq.flows_cnt;
3852         }
3853
3854 out:
3855         rcu_read_unlock();
3856         spin_unlock_bh(&local->fq.lock);
3857
3858         return ret;
3859 }
3860
3861 static int
3862 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
3863                                   struct net_device *dev,
3864                                   struct cfg80211_ftm_responder_stats *ftm_stats)
3865 {
3866         struct ieee80211_local *local = wiphy_priv(wiphy);
3867         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3868
3869         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
3870 }
3871
3872 static int
3873 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
3874                      struct cfg80211_pmsr_request *request)
3875 {
3876         struct ieee80211_local *local = wiphy_priv(wiphy);
3877         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
3878
3879         return drv_start_pmsr(local, sdata, request);
3880 }
3881
3882 static void
3883 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
3884                      struct cfg80211_pmsr_request *request)
3885 {
3886         struct ieee80211_local *local = wiphy_priv(wiphy);
3887         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
3888
3889         return drv_abort_pmsr(local, sdata, request);
3890 }
3891
3892 const struct cfg80211_ops mac80211_config_ops = {
3893         .add_virtual_intf = ieee80211_add_iface,
3894         .del_virtual_intf = ieee80211_del_iface,
3895         .change_virtual_intf = ieee80211_change_iface,
3896         .start_p2p_device = ieee80211_start_p2p_device,
3897         .stop_p2p_device = ieee80211_stop_p2p_device,
3898         .add_key = ieee80211_add_key,
3899         .del_key = ieee80211_del_key,
3900         .get_key = ieee80211_get_key,
3901         .set_default_key = ieee80211_config_default_key,
3902         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3903         .start_ap = ieee80211_start_ap,
3904         .change_beacon = ieee80211_change_beacon,
3905         .stop_ap = ieee80211_stop_ap,
3906         .add_station = ieee80211_add_station,
3907         .del_station = ieee80211_del_station,
3908         .change_station = ieee80211_change_station,
3909         .get_station = ieee80211_get_station,
3910         .dump_station = ieee80211_dump_station,
3911         .dump_survey = ieee80211_dump_survey,
3912 #ifdef CONFIG_MAC80211_MESH
3913         .add_mpath = ieee80211_add_mpath,
3914         .del_mpath = ieee80211_del_mpath,
3915         .change_mpath = ieee80211_change_mpath,
3916         .get_mpath = ieee80211_get_mpath,
3917         .dump_mpath = ieee80211_dump_mpath,
3918         .get_mpp = ieee80211_get_mpp,
3919         .dump_mpp = ieee80211_dump_mpp,
3920         .update_mesh_config = ieee80211_update_mesh_config,
3921         .get_mesh_config = ieee80211_get_mesh_config,
3922         .join_mesh = ieee80211_join_mesh,
3923         .leave_mesh = ieee80211_leave_mesh,
3924 #endif
3925         .join_ocb = ieee80211_join_ocb,
3926         .leave_ocb = ieee80211_leave_ocb,
3927         .change_bss = ieee80211_change_bss,
3928         .set_txq_params = ieee80211_set_txq_params,
3929         .set_monitor_channel = ieee80211_set_monitor_channel,
3930         .suspend = ieee80211_suspend,
3931         .resume = ieee80211_resume,
3932         .scan = ieee80211_scan,
3933         .abort_scan = ieee80211_abort_scan,
3934         .sched_scan_start = ieee80211_sched_scan_start,
3935         .sched_scan_stop = ieee80211_sched_scan_stop,
3936         .auth = ieee80211_auth,
3937         .assoc = ieee80211_assoc,
3938         .deauth = ieee80211_deauth,
3939         .disassoc = ieee80211_disassoc,
3940         .join_ibss = ieee80211_join_ibss,
3941         .leave_ibss = ieee80211_leave_ibss,
3942         .set_mcast_rate = ieee80211_set_mcast_rate,
3943         .set_wiphy_params = ieee80211_set_wiphy_params,
3944         .set_tx_power = ieee80211_set_tx_power,
3945         .get_tx_power = ieee80211_get_tx_power,
3946         .set_wds_peer = ieee80211_set_wds_peer,
3947         .rfkill_poll = ieee80211_rfkill_poll,
3948         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3949         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3950         .set_power_mgmt = ieee80211_set_power_mgmt,
3951         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3952         .remain_on_channel = ieee80211_remain_on_channel,
3953         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3954         .mgmt_tx = ieee80211_mgmt_tx,
3955         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3956         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3957         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3958         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3959         .set_antenna = ieee80211_set_antenna,
3960         .get_antenna = ieee80211_get_antenna,
3961         .set_rekey_data = ieee80211_set_rekey_data,
3962         .tdls_oper = ieee80211_tdls_oper,
3963         .tdls_mgmt = ieee80211_tdls_mgmt,
3964         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3965         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3966         .probe_client = ieee80211_probe_client,
3967         .set_noack_map = ieee80211_set_noack_map,
3968 #ifdef CONFIG_PM
3969         .set_wakeup = ieee80211_set_wakeup,
3970 #endif
3971         .get_channel = ieee80211_cfg_get_channel,
3972         .start_radar_detection = ieee80211_start_radar_detection,
3973         .channel_switch = ieee80211_channel_switch,
3974         .set_qos_map = ieee80211_set_qos_map,
3975         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3976         .add_tx_ts = ieee80211_add_tx_ts,
3977         .del_tx_ts = ieee80211_del_tx_ts,
3978         .start_nan = ieee80211_start_nan,
3979         .stop_nan = ieee80211_stop_nan,
3980         .nan_change_conf = ieee80211_nan_change_conf,
3981         .add_nan_func = ieee80211_add_nan_func,
3982         .del_nan_func = ieee80211_del_nan_func,
3983         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3984         .tx_control_port = ieee80211_tx_control_port,
3985         .get_txq_stats = ieee80211_get_txq_stats,
3986         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
3987         .start_pmsr = ieee80211_start_pmsr,
3988         .abort_pmsr = ieee80211_abort_pmsr,
3989 };