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Merge tag 'mac80211-for-davem-2016-03-02' of git://git.kernel.org/pub/scm/linux/kerne...
[deliverable/linux.git] / 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 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "rate.h"
21 #include "mesh.h"
22 #include "wme.h"
23
24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
25 const char *name,
26 unsigned char name_assign_type,
27 enum nl80211_iftype type,
28 u32 *flags,
29 struct vif_params *params)
30 {
31 struct ieee80211_local *local = wiphy_priv(wiphy);
32 struct wireless_dev *wdev;
33 struct ieee80211_sub_if_data *sdata;
34 int err;
35
36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
37 if (err)
38 return ERR_PTR(err);
39
40 if (type == NL80211_IFTYPE_MONITOR && flags) {
41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 sdata->u.mntr_flags = *flags;
43 }
44
45 return wdev;
46 }
47
48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49 {
50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51
52 return 0;
53 }
54
55 static int ieee80211_change_iface(struct wiphy *wiphy,
56 struct net_device *dev,
57 enum nl80211_iftype type, u32 *flags,
58 struct vif_params *params)
59 {
60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61 int ret;
62
63 ret = ieee80211_if_change_type(sdata, type);
64 if (ret)
65 return ret;
66
67 if (type == NL80211_IFTYPE_AP_VLAN &&
68 params && params->use_4addr == 0)
69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 else if (type == NL80211_IFTYPE_STATION &&
71 params && params->use_4addr >= 0)
72 sdata->u.mgd.use_4addr = params->use_4addr;
73
74 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
75 struct ieee80211_local *local = sdata->local;
76
77 if (ieee80211_sdata_running(sdata)) {
78 u32 mask = MONITOR_FLAG_COOK_FRAMES |
79 MONITOR_FLAG_ACTIVE;
80
81 /*
82 * Prohibit MONITOR_FLAG_COOK_FRAMES and
83 * MONITOR_FLAG_ACTIVE to be changed while the
84 * interface is up.
85 * Else we would need to add a lot of cruft
86 * to update everything:
87 * cooked_mntrs, monitor and all fif_* counters
88 * reconfigure hardware
89 */
90 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
91 return -EBUSY;
92
93 ieee80211_adjust_monitor_flags(sdata, -1);
94 sdata->u.mntr_flags = *flags;
95 ieee80211_adjust_monitor_flags(sdata, 1);
96
97 ieee80211_configure_filter(local);
98 } else {
99 /*
100 * Because the interface is down, ieee80211_do_stop
101 * and ieee80211_do_open take care of "everything"
102 * mentioned in the comment above.
103 */
104 sdata->u.mntr_flags = *flags;
105 }
106 }
107
108 return 0;
109 }
110
111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
112 struct wireless_dev *wdev)
113 {
114 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
115 int ret;
116
117 mutex_lock(&sdata->local->chanctx_mtx);
118 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
119 mutex_unlock(&sdata->local->chanctx_mtx);
120 if (ret < 0)
121 return ret;
122
123 return ieee80211_do_open(wdev, true);
124 }
125
126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
127 struct wireless_dev *wdev)
128 {
129 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
130 }
131
132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
133 struct net_device *dev,
134 u16 noack_map)
135 {
136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
137
138 sdata->noack_map = noack_map;
139
140 ieee80211_check_fast_xmit_iface(sdata);
141
142 return 0;
143 }
144
145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
146 u8 key_idx, bool pairwise, const u8 *mac_addr,
147 struct key_params *params)
148 {
149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
150 struct ieee80211_local *local = sdata->local;
151 struct sta_info *sta = NULL;
152 const struct ieee80211_cipher_scheme *cs = NULL;
153 struct ieee80211_key *key;
154 int err;
155
156 if (!ieee80211_sdata_running(sdata))
157 return -ENETDOWN;
158
159 /* reject WEP and TKIP keys if WEP failed to initialize */
160 switch (params->cipher) {
161 case WLAN_CIPHER_SUITE_WEP40:
162 case WLAN_CIPHER_SUITE_TKIP:
163 case WLAN_CIPHER_SUITE_WEP104:
164 if (IS_ERR(local->wep_tx_tfm))
165 return -EINVAL;
166 break;
167 case WLAN_CIPHER_SUITE_CCMP:
168 case WLAN_CIPHER_SUITE_CCMP_256:
169 case WLAN_CIPHER_SUITE_AES_CMAC:
170 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
171 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
173 case WLAN_CIPHER_SUITE_GCMP:
174 case WLAN_CIPHER_SUITE_GCMP_256:
175 break;
176 default:
177 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
178 break;
179 }
180
181 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
182 params->key, params->seq_len, params->seq,
183 cs);
184 if (IS_ERR(key))
185 return PTR_ERR(key);
186
187 if (pairwise)
188 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
189
190 mutex_lock(&local->sta_mtx);
191
192 if (mac_addr) {
193 if (ieee80211_vif_is_mesh(&sdata->vif))
194 sta = sta_info_get(sdata, mac_addr);
195 else
196 sta = sta_info_get_bss(sdata, mac_addr);
197 /*
198 * The ASSOC test makes sure the driver is ready to
199 * receive the key. When wpa_supplicant has roamed
200 * using FT, it attempts to set the key before
201 * association has completed, this rejects that attempt
202 * so it will set the key again after association.
203 *
204 * TODO: accept the key if we have a station entry and
205 * add it to the device after the station.
206 */
207 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
208 ieee80211_key_free_unused(key);
209 err = -ENOENT;
210 goto out_unlock;
211 }
212 }
213
214 switch (sdata->vif.type) {
215 case NL80211_IFTYPE_STATION:
216 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
217 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
218 break;
219 case NL80211_IFTYPE_AP:
220 case NL80211_IFTYPE_AP_VLAN:
221 /* Keys without a station are used for TX only */
222 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
223 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
224 break;
225 case NL80211_IFTYPE_ADHOC:
226 /* no MFP (yet) */
227 break;
228 case NL80211_IFTYPE_MESH_POINT:
229 #ifdef CONFIG_MAC80211_MESH
230 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
231 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
232 break;
233 #endif
234 case NL80211_IFTYPE_WDS:
235 case NL80211_IFTYPE_MONITOR:
236 case NL80211_IFTYPE_P2P_DEVICE:
237 case NL80211_IFTYPE_UNSPECIFIED:
238 case NUM_NL80211_IFTYPES:
239 case NL80211_IFTYPE_P2P_CLIENT:
240 case NL80211_IFTYPE_P2P_GO:
241 case NL80211_IFTYPE_OCB:
242 /* shouldn't happen */
243 WARN_ON_ONCE(1);
244 break;
245 }
246
247 if (sta)
248 sta->cipher_scheme = cs;
249
250 err = ieee80211_key_link(key, sdata, sta);
251
252 out_unlock:
253 mutex_unlock(&local->sta_mtx);
254
255 return err;
256 }
257
258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
259 u8 key_idx, bool pairwise, const u8 *mac_addr)
260 {
261 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
262 struct ieee80211_local *local = sdata->local;
263 struct sta_info *sta;
264 struct ieee80211_key *key = NULL;
265 int ret;
266
267 mutex_lock(&local->sta_mtx);
268 mutex_lock(&local->key_mtx);
269
270 if (mac_addr) {
271 ret = -ENOENT;
272
273 sta = sta_info_get_bss(sdata, mac_addr);
274 if (!sta)
275 goto out_unlock;
276
277 if (pairwise)
278 key = key_mtx_dereference(local, sta->ptk[key_idx]);
279 else
280 key = key_mtx_dereference(local, sta->gtk[key_idx]);
281 } else
282 key = key_mtx_dereference(local, sdata->keys[key_idx]);
283
284 if (!key) {
285 ret = -ENOENT;
286 goto out_unlock;
287 }
288
289 ieee80211_key_free(key, true);
290
291 ret = 0;
292 out_unlock:
293 mutex_unlock(&local->key_mtx);
294 mutex_unlock(&local->sta_mtx);
295
296 return ret;
297 }
298
299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
300 u8 key_idx, bool pairwise, const u8 *mac_addr,
301 void *cookie,
302 void (*callback)(void *cookie,
303 struct key_params *params))
304 {
305 struct ieee80211_sub_if_data *sdata;
306 struct sta_info *sta = NULL;
307 u8 seq[6] = {0};
308 struct key_params params;
309 struct ieee80211_key *key = NULL;
310 u64 pn64;
311 u32 iv32;
312 u16 iv16;
313 int err = -ENOENT;
314 struct ieee80211_key_seq kseq = {};
315
316 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
317
318 rcu_read_lock();
319
320 if (mac_addr) {
321 sta = sta_info_get_bss(sdata, mac_addr);
322 if (!sta)
323 goto out;
324
325 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
326 key = rcu_dereference(sta->ptk[key_idx]);
327 else if (!pairwise &&
328 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
329 key = rcu_dereference(sta->gtk[key_idx]);
330 } else
331 key = rcu_dereference(sdata->keys[key_idx]);
332
333 if (!key)
334 goto out;
335
336 memset(&params, 0, sizeof(params));
337
338 params.cipher = key->conf.cipher;
339
340 switch (key->conf.cipher) {
341 case WLAN_CIPHER_SUITE_TKIP:
342 iv32 = key->u.tkip.tx.iv32;
343 iv16 = key->u.tkip.tx.iv16;
344
345 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
346 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
347 drv_get_key_seq(sdata->local, key, &kseq);
348 iv32 = kseq.tkip.iv32;
349 iv16 = kseq.tkip.iv16;
350 }
351
352 seq[0] = iv16 & 0xff;
353 seq[1] = (iv16 >> 8) & 0xff;
354 seq[2] = iv32 & 0xff;
355 seq[3] = (iv32 >> 8) & 0xff;
356 seq[4] = (iv32 >> 16) & 0xff;
357 seq[5] = (iv32 >> 24) & 0xff;
358 params.seq = seq;
359 params.seq_len = 6;
360 break;
361 case WLAN_CIPHER_SUITE_CCMP:
362 case WLAN_CIPHER_SUITE_CCMP_256:
363 case WLAN_CIPHER_SUITE_AES_CMAC:
364 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
365 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
366 offsetof(typeof(kseq), aes_cmac));
367 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
368 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
369 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
370 offsetof(typeof(kseq), aes_gmac));
371 case WLAN_CIPHER_SUITE_GCMP:
372 case WLAN_CIPHER_SUITE_GCMP_256:
373 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
374 offsetof(typeof(kseq), gcmp));
375
376 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
377 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
378 drv_get_key_seq(sdata->local, key, &kseq);
379 memcpy(seq, kseq.ccmp.pn, 6);
380 } else {
381 pn64 = atomic64_read(&key->conf.tx_pn);
382 seq[0] = pn64;
383 seq[1] = pn64 >> 8;
384 seq[2] = pn64 >> 16;
385 seq[3] = pn64 >> 24;
386 seq[4] = pn64 >> 32;
387 seq[5] = pn64 >> 40;
388 }
389 params.seq = seq;
390 params.seq_len = 6;
391 break;
392 default:
393 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
394 break;
395 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
396 break;
397 drv_get_key_seq(sdata->local, key, &kseq);
398 params.seq = kseq.hw.seq;
399 params.seq_len = kseq.hw.seq_len;
400 break;
401 }
402
403 params.key = key->conf.key;
404 params.key_len = key->conf.keylen;
405
406 callback(cookie, &params);
407 err = 0;
408
409 out:
410 rcu_read_unlock();
411 return err;
412 }
413
414 static int ieee80211_config_default_key(struct wiphy *wiphy,
415 struct net_device *dev,
416 u8 key_idx, bool uni,
417 bool multi)
418 {
419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
420
421 ieee80211_set_default_key(sdata, key_idx, uni, multi);
422
423 return 0;
424 }
425
426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
427 struct net_device *dev,
428 u8 key_idx)
429 {
430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
431
432 ieee80211_set_default_mgmt_key(sdata, key_idx);
433
434 return 0;
435 }
436
437 void sta_set_rate_info_tx(struct sta_info *sta,
438 const struct ieee80211_tx_rate *rate,
439 struct rate_info *rinfo)
440 {
441 rinfo->flags = 0;
442 if (rate->flags & IEEE80211_TX_RC_MCS) {
443 rinfo->flags |= RATE_INFO_FLAGS_MCS;
444 rinfo->mcs = rate->idx;
445 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
446 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
447 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
448 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
449 } else {
450 struct ieee80211_supported_band *sband;
451 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
452 u16 brate;
453
454 sband = sta->local->hw.wiphy->bands[
455 ieee80211_get_sdata_band(sta->sdata)];
456 brate = sband->bitrates[rate->idx].bitrate;
457 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
458 }
459 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
460 rinfo->bw = RATE_INFO_BW_40;
461 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
462 rinfo->bw = RATE_INFO_BW_80;
463 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
464 rinfo->bw = RATE_INFO_BW_160;
465 else
466 rinfo->bw = RATE_INFO_BW_20;
467 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
468 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
469 }
470
471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
472 int idx, u8 *mac, struct station_info *sinfo)
473 {
474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
475 struct ieee80211_local *local = sdata->local;
476 struct sta_info *sta;
477 int ret = -ENOENT;
478
479 mutex_lock(&local->sta_mtx);
480
481 sta = sta_info_get_by_idx(sdata, idx);
482 if (sta) {
483 ret = 0;
484 memcpy(mac, sta->sta.addr, ETH_ALEN);
485 sta_set_sinfo(sta, sinfo);
486 }
487
488 mutex_unlock(&local->sta_mtx);
489
490 return ret;
491 }
492
493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
494 int idx, struct survey_info *survey)
495 {
496 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
497
498 return drv_get_survey(local, idx, survey);
499 }
500
501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
502 const u8 *mac, struct station_info *sinfo)
503 {
504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
505 struct ieee80211_local *local = sdata->local;
506 struct sta_info *sta;
507 int ret = -ENOENT;
508
509 mutex_lock(&local->sta_mtx);
510
511 sta = sta_info_get_bss(sdata, mac);
512 if (sta) {
513 ret = 0;
514 sta_set_sinfo(sta, sinfo);
515 }
516
517 mutex_unlock(&local->sta_mtx);
518
519 return ret;
520 }
521
522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
523 struct cfg80211_chan_def *chandef)
524 {
525 struct ieee80211_local *local = wiphy_priv(wiphy);
526 struct ieee80211_sub_if_data *sdata;
527 int ret = 0;
528
529 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
530 return 0;
531
532 mutex_lock(&local->mtx);
533 mutex_lock(&local->iflist_mtx);
534 if (local->use_chanctx) {
535 sdata = rcu_dereference_protected(
536 local->monitor_sdata,
537 lockdep_is_held(&local->iflist_mtx));
538 if (sdata) {
539 ieee80211_vif_release_channel(sdata);
540 ret = ieee80211_vif_use_channel(sdata, chandef,
541 IEEE80211_CHANCTX_EXCLUSIVE);
542 }
543 } else if (local->open_count == local->monitors) {
544 local->_oper_chandef = *chandef;
545 ieee80211_hw_config(local, 0);
546 }
547
548 if (ret == 0)
549 local->monitor_chandef = *chandef;
550 mutex_unlock(&local->iflist_mtx);
551 mutex_unlock(&local->mtx);
552
553 return ret;
554 }
555
556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
557 const u8 *resp, size_t resp_len,
558 const struct ieee80211_csa_settings *csa)
559 {
560 struct probe_resp *new, *old;
561
562 if (!resp || !resp_len)
563 return 1;
564
565 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
566
567 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
568 if (!new)
569 return -ENOMEM;
570
571 new->len = resp_len;
572 memcpy(new->data, resp, resp_len);
573
574 if (csa)
575 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
576 csa->n_counter_offsets_presp *
577 sizeof(new->csa_counter_offsets[0]));
578
579 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
580 if (old)
581 kfree_rcu(old, rcu_head);
582
583 return 0;
584 }
585
586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
587 struct cfg80211_beacon_data *params,
588 const struct ieee80211_csa_settings *csa)
589 {
590 struct beacon_data *new, *old;
591 int new_head_len, new_tail_len;
592 int size, err;
593 u32 changed = BSS_CHANGED_BEACON;
594
595 old = sdata_dereference(sdata->u.ap.beacon, sdata);
596
597
598 /* Need to have a beacon head if we don't have one yet */
599 if (!params->head && !old)
600 return -EINVAL;
601
602 /* new or old head? */
603 if (params->head)
604 new_head_len = params->head_len;
605 else
606 new_head_len = old->head_len;
607
608 /* new or old tail? */
609 if (params->tail || !old)
610 /* params->tail_len will be zero for !params->tail */
611 new_tail_len = params->tail_len;
612 else
613 new_tail_len = old->tail_len;
614
615 size = sizeof(*new) + new_head_len + new_tail_len;
616
617 new = kzalloc(size, GFP_KERNEL);
618 if (!new)
619 return -ENOMEM;
620
621 /* start filling the new info now */
622
623 /*
624 * pointers go into the block we allocated,
625 * memory is | beacon_data | head | tail |
626 */
627 new->head = ((u8 *) new) + sizeof(*new);
628 new->tail = new->head + new_head_len;
629 new->head_len = new_head_len;
630 new->tail_len = new_tail_len;
631
632 if (csa) {
633 new->csa_current_counter = csa->count;
634 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
635 csa->n_counter_offsets_beacon *
636 sizeof(new->csa_counter_offsets[0]));
637 }
638
639 /* copy in head */
640 if (params->head)
641 memcpy(new->head, params->head, new_head_len);
642 else
643 memcpy(new->head, old->head, new_head_len);
644
645 /* copy in optional tail */
646 if (params->tail)
647 memcpy(new->tail, params->tail, new_tail_len);
648 else
649 if (old)
650 memcpy(new->tail, old->tail, new_tail_len);
651
652 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
653 params->probe_resp_len, csa);
654 if (err < 0)
655 return err;
656 if (err == 0)
657 changed |= BSS_CHANGED_AP_PROBE_RESP;
658
659 rcu_assign_pointer(sdata->u.ap.beacon, new);
660
661 if (old)
662 kfree_rcu(old, rcu_head);
663
664 return changed;
665 }
666
667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
668 struct cfg80211_ap_settings *params)
669 {
670 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
671 struct ieee80211_local *local = sdata->local;
672 struct beacon_data *old;
673 struct ieee80211_sub_if_data *vlan;
674 u32 changed = BSS_CHANGED_BEACON_INT |
675 BSS_CHANGED_BEACON_ENABLED |
676 BSS_CHANGED_BEACON |
677 BSS_CHANGED_SSID |
678 BSS_CHANGED_P2P_PS |
679 BSS_CHANGED_TXPOWER;
680 int err;
681
682 old = sdata_dereference(sdata->u.ap.beacon, sdata);
683 if (old)
684 return -EALREADY;
685
686 switch (params->smps_mode) {
687 case NL80211_SMPS_OFF:
688 sdata->smps_mode = IEEE80211_SMPS_OFF;
689 break;
690 case NL80211_SMPS_STATIC:
691 sdata->smps_mode = IEEE80211_SMPS_STATIC;
692 break;
693 case NL80211_SMPS_DYNAMIC:
694 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
695 break;
696 default:
697 return -EINVAL;
698 }
699 sdata->needed_rx_chains = sdata->local->rx_chains;
700
701 mutex_lock(&local->mtx);
702 err = ieee80211_vif_use_channel(sdata, &params->chandef,
703 IEEE80211_CHANCTX_SHARED);
704 if (!err)
705 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
706 mutex_unlock(&local->mtx);
707 if (err)
708 return err;
709
710 /*
711 * Apply control port protocol, this allows us to
712 * not encrypt dynamic WEP control frames.
713 */
714 sdata->control_port_protocol = params->crypto.control_port_ethertype;
715 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
716 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
717 &params->crypto,
718 sdata->vif.type);
719
720 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
721 vlan->control_port_protocol =
722 params->crypto.control_port_ethertype;
723 vlan->control_port_no_encrypt =
724 params->crypto.control_port_no_encrypt;
725 vlan->encrypt_headroom =
726 ieee80211_cs_headroom(sdata->local,
727 &params->crypto,
728 vlan->vif.type);
729 }
730
731 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
732 sdata->vif.bss_conf.dtim_period = params->dtim_period;
733 sdata->vif.bss_conf.enable_beacon = true;
734
735 sdata->vif.bss_conf.ssid_len = params->ssid_len;
736 if (params->ssid_len)
737 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
738 params->ssid_len);
739 sdata->vif.bss_conf.hidden_ssid =
740 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
741
742 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
743 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
744 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
745 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
746 if (params->p2p_opp_ps)
747 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
748 IEEE80211_P2P_OPPPS_ENABLE_BIT;
749
750 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
751 if (err < 0) {
752 ieee80211_vif_release_channel(sdata);
753 return err;
754 }
755 changed |= err;
756
757 err = drv_start_ap(sdata->local, sdata);
758 if (err) {
759 old = sdata_dereference(sdata->u.ap.beacon, sdata);
760
761 if (old)
762 kfree_rcu(old, rcu_head);
763 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
764 ieee80211_vif_release_channel(sdata);
765 return err;
766 }
767
768 ieee80211_recalc_dtim(local, sdata);
769 ieee80211_bss_info_change_notify(sdata, changed);
770
771 netif_carrier_on(dev);
772 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
773 netif_carrier_on(vlan->dev);
774
775 return 0;
776 }
777
778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
779 struct cfg80211_beacon_data *params)
780 {
781 struct ieee80211_sub_if_data *sdata;
782 struct beacon_data *old;
783 int err;
784
785 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786 sdata_assert_lock(sdata);
787
788 /* don't allow changing the beacon while CSA is in place - offset
789 * of channel switch counter may change
790 */
791 if (sdata->vif.csa_active)
792 return -EBUSY;
793
794 old = sdata_dereference(sdata->u.ap.beacon, sdata);
795 if (!old)
796 return -ENOENT;
797
798 err = ieee80211_assign_beacon(sdata, params, NULL);
799 if (err < 0)
800 return err;
801 ieee80211_bss_info_change_notify(sdata, err);
802 return 0;
803 }
804
805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
806 {
807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
808 struct ieee80211_sub_if_data *vlan;
809 struct ieee80211_local *local = sdata->local;
810 struct beacon_data *old_beacon;
811 struct probe_resp *old_probe_resp;
812 struct cfg80211_chan_def chandef;
813
814 sdata_assert_lock(sdata);
815
816 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
817 if (!old_beacon)
818 return -ENOENT;
819 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
820
821 /* abort any running channel switch */
822 mutex_lock(&local->mtx);
823 sdata->vif.csa_active = false;
824 if (sdata->csa_block_tx) {
825 ieee80211_wake_vif_queues(local, sdata,
826 IEEE80211_QUEUE_STOP_REASON_CSA);
827 sdata->csa_block_tx = false;
828 }
829
830 mutex_unlock(&local->mtx);
831
832 kfree(sdata->u.ap.next_beacon);
833 sdata->u.ap.next_beacon = NULL;
834
835 /* turn off carrier for this interface and dependent VLANs */
836 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
837 netif_carrier_off(vlan->dev);
838 netif_carrier_off(dev);
839
840 /* remove beacon and probe response */
841 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
842 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
843 kfree_rcu(old_beacon, rcu_head);
844 if (old_probe_resp)
845 kfree_rcu(old_probe_resp, rcu_head);
846 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
847
848 __sta_info_flush(sdata, true);
849 ieee80211_free_keys(sdata, true);
850
851 sdata->vif.bss_conf.enable_beacon = false;
852 sdata->vif.bss_conf.ssid_len = 0;
853 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
855
856 if (sdata->wdev.cac_started) {
857 chandef = sdata->vif.bss_conf.chandef;
858 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
859 cfg80211_cac_event(sdata->dev, &chandef,
860 NL80211_RADAR_CAC_ABORTED,
861 GFP_KERNEL);
862 }
863
864 drv_stop_ap(sdata->local, sdata);
865
866 /* free all potentially still buffered bcast frames */
867 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
868 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
869
870 mutex_lock(&local->mtx);
871 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
872 ieee80211_vif_release_channel(sdata);
873 mutex_unlock(&local->mtx);
874
875 return 0;
876 }
877
878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
879 struct iapp_layer2_update {
880 u8 da[ETH_ALEN]; /* broadcast */
881 u8 sa[ETH_ALEN]; /* STA addr */
882 __be16 len; /* 6 */
883 u8 dsap; /* 0 */
884 u8 ssap; /* 0 */
885 u8 control;
886 u8 xid_info[3];
887 } __packed;
888
889 static void ieee80211_send_layer2_update(struct sta_info *sta)
890 {
891 struct iapp_layer2_update *msg;
892 struct sk_buff *skb;
893
894 /* Send Level 2 Update Frame to update forwarding tables in layer 2
895 * bridge devices */
896
897 skb = dev_alloc_skb(sizeof(*msg));
898 if (!skb)
899 return;
900 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
901
902 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
903 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
904
905 eth_broadcast_addr(msg->da);
906 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
907 msg->len = htons(6);
908 msg->dsap = 0;
909 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
910 msg->control = 0xaf; /* XID response lsb.1111F101.
911 * F=0 (no poll command; unsolicited frame) */
912 msg->xid_info[0] = 0x81; /* XID format identifier */
913 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
914 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
915
916 skb->dev = sta->sdata->dev;
917 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
918 memset(skb->cb, 0, sizeof(skb->cb));
919 netif_rx_ni(skb);
920 }
921
922 static int sta_apply_auth_flags(struct ieee80211_local *local,
923 struct sta_info *sta,
924 u32 mask, u32 set)
925 {
926 int ret;
927
928 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
929 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
930 !test_sta_flag(sta, WLAN_STA_AUTH)) {
931 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
932 if (ret)
933 return ret;
934 }
935
936 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
937 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
938 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
939 /*
940 * When peer becomes associated, init rate control as
941 * well. Some drivers require rate control initialized
942 * before drv_sta_state() is called.
943 */
944 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
945 rate_control_rate_init(sta);
946
947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
948 if (ret)
949 return ret;
950 }
951
952 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
953 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
954 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
955 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
956 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
957 else
958 ret = 0;
959 if (ret)
960 return ret;
961 }
962
963 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
964 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
965 test_sta_flag(sta, WLAN_STA_ASSOC)) {
966 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
967 if (ret)
968 return ret;
969 }
970
971 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
972 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
973 test_sta_flag(sta, WLAN_STA_AUTH)) {
974 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
975 if (ret)
976 return ret;
977 }
978
979 return 0;
980 }
981
982 static void sta_apply_mesh_params(struct ieee80211_local *local,
983 struct sta_info *sta,
984 struct station_parameters *params)
985 {
986 #ifdef CONFIG_MAC80211_MESH
987 struct ieee80211_sub_if_data *sdata = sta->sdata;
988 u32 changed = 0;
989
990 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
991 switch (params->plink_state) {
992 case NL80211_PLINK_ESTAB:
993 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
994 changed = mesh_plink_inc_estab_count(sdata);
995 sta->mesh->plink_state = params->plink_state;
996
997 ieee80211_mps_sta_status_update(sta);
998 changed |= ieee80211_mps_set_sta_local_pm(sta,
999 sdata->u.mesh.mshcfg.power_mode);
1000 break;
1001 case NL80211_PLINK_LISTEN:
1002 case NL80211_PLINK_BLOCKED:
1003 case NL80211_PLINK_OPN_SNT:
1004 case NL80211_PLINK_OPN_RCVD:
1005 case NL80211_PLINK_CNF_RCVD:
1006 case NL80211_PLINK_HOLDING:
1007 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1008 changed = mesh_plink_dec_estab_count(sdata);
1009 sta->mesh->plink_state = params->plink_state;
1010
1011 ieee80211_mps_sta_status_update(sta);
1012 changed |= ieee80211_mps_set_sta_local_pm(sta,
1013 NL80211_MESH_POWER_UNKNOWN);
1014 break;
1015 default:
1016 /* nothing */
1017 break;
1018 }
1019 }
1020
1021 switch (params->plink_action) {
1022 case NL80211_PLINK_ACTION_NO_ACTION:
1023 /* nothing */
1024 break;
1025 case NL80211_PLINK_ACTION_OPEN:
1026 changed |= mesh_plink_open(sta);
1027 break;
1028 case NL80211_PLINK_ACTION_BLOCK:
1029 changed |= mesh_plink_block(sta);
1030 break;
1031 }
1032
1033 if (params->local_pm)
1034 changed |= ieee80211_mps_set_sta_local_pm(sta,
1035 params->local_pm);
1036
1037 ieee80211_mbss_info_change_notify(sdata, changed);
1038 #endif
1039 }
1040
1041 static int sta_apply_parameters(struct ieee80211_local *local,
1042 struct sta_info *sta,
1043 struct station_parameters *params)
1044 {
1045 int ret = 0;
1046 struct ieee80211_supported_band *sband;
1047 struct ieee80211_sub_if_data *sdata = sta->sdata;
1048 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1049 u32 mask, set;
1050
1051 sband = local->hw.wiphy->bands[band];
1052
1053 mask = params->sta_flags_mask;
1054 set = params->sta_flags_set;
1055
1056 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1057 /*
1058 * In mesh mode, ASSOCIATED isn't part of the nl80211
1059 * API but must follow AUTHENTICATED for driver state.
1060 */
1061 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1062 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1063 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1064 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1065 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066 /*
1067 * TDLS -- everything follows authorized, but
1068 * only becoming authorized is possible, not
1069 * going back
1070 */
1071 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1072 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1073 BIT(NL80211_STA_FLAG_ASSOCIATED);
1074 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1075 BIT(NL80211_STA_FLAG_ASSOCIATED);
1076 }
1077 }
1078
1079 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1080 local->hw.queues >= IEEE80211_NUM_ACS)
1081 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1082
1083 /* auth flags will be set later for TDLS,
1084 * and for unassociated stations that move to assocaited */
1085 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1087 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1088 ret = sta_apply_auth_flags(local, sta, mask, set);
1089 if (ret)
1090 return ret;
1091 }
1092
1093 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1094 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1095 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1096 else
1097 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1098 }
1099
1100 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1101 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1102 if (set & BIT(NL80211_STA_FLAG_MFP))
1103 set_sta_flag(sta, WLAN_STA_MFP);
1104 else
1105 clear_sta_flag(sta, WLAN_STA_MFP);
1106 }
1107
1108 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1109 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1110 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1111 else
1112 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1113 }
1114
1115 /* mark TDLS channel switch support, if the AP allows it */
1116 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1117 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1118 params->ext_capab_len >= 4 &&
1119 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1120 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1121
1122 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1123 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1124 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1125 params->ext_capab_len >= 8 &&
1126 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1127 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1128
1129 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1130 sta->sta.uapsd_queues = params->uapsd_queues;
1131 sta->sta.max_sp = params->max_sp;
1132 }
1133
1134 /*
1135 * cfg80211 validates this (1-2007) and allows setting the AID
1136 * only when creating a new station entry
1137 */
1138 if (params->aid)
1139 sta->sta.aid = params->aid;
1140
1141 /*
1142 * Some of the following updates would be racy if called on an
1143 * existing station, via ieee80211_change_station(). However,
1144 * all such changes are rejected by cfg80211 except for updates
1145 * changing the supported rates on an existing but not yet used
1146 * TDLS peer.
1147 */
1148
1149 if (params->listen_interval >= 0)
1150 sta->listen_interval = params->listen_interval;
1151
1152 if (params->supported_rates) {
1153 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1154 sband, params->supported_rates,
1155 params->supported_rates_len,
1156 &sta->sta.supp_rates[band]);
1157 }
1158
1159 if (params->ht_capa)
1160 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1161 params->ht_capa, sta);
1162
1163 if (params->vht_capa)
1164 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1165 params->vht_capa, sta);
1166
1167 if (params->opmode_notif_used) {
1168 /* returned value is only needed for rc update, but the
1169 * rc isn't initialized here yet, so ignore it
1170 */
1171 __ieee80211_vht_handle_opmode(sdata, sta,
1172 params->opmode_notif, band);
1173 }
1174
1175 if (ieee80211_vif_is_mesh(&sdata->vif))
1176 sta_apply_mesh_params(local, sta, params);
1177
1178 /* set the STA state after all sta info from usermode has been set */
1179 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1180 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1181 ret = sta_apply_auth_flags(local, sta, mask, set);
1182 if (ret)
1183 return ret;
1184 }
1185
1186 return 0;
1187 }
1188
1189 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1190 const u8 *mac,
1191 struct station_parameters *params)
1192 {
1193 struct ieee80211_local *local = wiphy_priv(wiphy);
1194 struct sta_info *sta;
1195 struct ieee80211_sub_if_data *sdata;
1196 int err;
1197 int layer2_update;
1198
1199 if (params->vlan) {
1200 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1201
1202 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1203 sdata->vif.type != NL80211_IFTYPE_AP)
1204 return -EINVAL;
1205 } else
1206 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207
1208 if (ether_addr_equal(mac, sdata->vif.addr))
1209 return -EINVAL;
1210
1211 if (is_multicast_ether_addr(mac))
1212 return -EINVAL;
1213
1214 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1215 if (!sta)
1216 return -ENOMEM;
1217
1218 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1219 sta->sta.tdls = true;
1220
1221 err = sta_apply_parameters(local, sta, params);
1222 if (err) {
1223 sta_info_free(local, sta);
1224 return err;
1225 }
1226
1227 /*
1228 * for TDLS and for unassociated station, rate control should be
1229 * initialized only when rates are known and station is marked
1230 * authorized/associated
1231 */
1232 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1233 test_sta_flag(sta, WLAN_STA_ASSOC))
1234 rate_control_rate_init(sta);
1235
1236 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1237 sdata->vif.type == NL80211_IFTYPE_AP;
1238
1239 err = sta_info_insert_rcu(sta);
1240 if (err) {
1241 rcu_read_unlock();
1242 return err;
1243 }
1244
1245 if (layer2_update)
1246 ieee80211_send_layer2_update(sta);
1247
1248 rcu_read_unlock();
1249
1250 return 0;
1251 }
1252
1253 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1254 struct station_del_parameters *params)
1255 {
1256 struct ieee80211_sub_if_data *sdata;
1257
1258 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1259
1260 if (params->mac)
1261 return sta_info_destroy_addr_bss(sdata, params->mac);
1262
1263 sta_info_flush(sdata);
1264 return 0;
1265 }
1266
1267 static int ieee80211_change_station(struct wiphy *wiphy,
1268 struct net_device *dev, const u8 *mac,
1269 struct station_parameters *params)
1270 {
1271 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1272 struct ieee80211_local *local = wiphy_priv(wiphy);
1273 struct sta_info *sta;
1274 struct ieee80211_sub_if_data *vlansdata;
1275 enum cfg80211_station_type statype;
1276 int err;
1277
1278 mutex_lock(&local->sta_mtx);
1279
1280 sta = sta_info_get_bss(sdata, mac);
1281 if (!sta) {
1282 err = -ENOENT;
1283 goto out_err;
1284 }
1285
1286 switch (sdata->vif.type) {
1287 case NL80211_IFTYPE_MESH_POINT:
1288 if (sdata->u.mesh.user_mpm)
1289 statype = CFG80211_STA_MESH_PEER_USER;
1290 else
1291 statype = CFG80211_STA_MESH_PEER_KERNEL;
1292 break;
1293 case NL80211_IFTYPE_ADHOC:
1294 statype = CFG80211_STA_IBSS;
1295 break;
1296 case NL80211_IFTYPE_STATION:
1297 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1298 statype = CFG80211_STA_AP_STA;
1299 break;
1300 }
1301 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1302 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1303 else
1304 statype = CFG80211_STA_TDLS_PEER_SETUP;
1305 break;
1306 case NL80211_IFTYPE_AP:
1307 case NL80211_IFTYPE_AP_VLAN:
1308 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1309 statype = CFG80211_STA_AP_CLIENT;
1310 else
1311 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1312 break;
1313 default:
1314 err = -EOPNOTSUPP;
1315 goto out_err;
1316 }
1317
1318 err = cfg80211_check_station_change(wiphy, params, statype);
1319 if (err)
1320 goto out_err;
1321
1322 if (params->vlan && params->vlan != sta->sdata->dev) {
1323 bool prev_4addr = false;
1324 bool new_4addr = false;
1325
1326 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1327
1328 if (params->vlan->ieee80211_ptr->use_4addr) {
1329 if (vlansdata->u.vlan.sta) {
1330 err = -EBUSY;
1331 goto out_err;
1332 }
1333
1334 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1335 new_4addr = true;
1336 }
1337
1338 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1339 sta->sdata->u.vlan.sta) {
1340 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1341 prev_4addr = true;
1342 }
1343
1344 sta->sdata = vlansdata;
1345 ieee80211_check_fast_xmit(sta);
1346
1347 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1348 prev_4addr != new_4addr) {
1349 if (new_4addr)
1350 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1351 else
1352 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1353 }
1354
1355 ieee80211_send_layer2_update(sta);
1356 }
1357
1358 err = sta_apply_parameters(local, sta, params);
1359 if (err)
1360 goto out_err;
1361
1362 mutex_unlock(&local->sta_mtx);
1363
1364 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1365 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1366 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1367 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1368 sta_info_tx_streams(sta) != 1) {
1369 ht_dbg(sta->sdata,
1370 "%pM just authorized and MIMO capable - update SMPS\n",
1371 sta->sta.addr);
1372 ieee80211_send_smps_action(sta->sdata,
1373 sta->sdata->bss->req_smps,
1374 sta->sta.addr,
1375 sta->sdata->vif.bss_conf.bssid);
1376 }
1377
1378 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1379 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1380 ieee80211_recalc_ps(local);
1381 ieee80211_recalc_ps_vif(sdata);
1382 }
1383
1384 return 0;
1385 out_err:
1386 mutex_unlock(&local->sta_mtx);
1387 return err;
1388 }
1389
1390 #ifdef CONFIG_MAC80211_MESH
1391 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1392 const u8 *dst, const u8 *next_hop)
1393 {
1394 struct ieee80211_sub_if_data *sdata;
1395 struct mesh_path *mpath;
1396 struct sta_info *sta;
1397
1398 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1399
1400 rcu_read_lock();
1401 sta = sta_info_get(sdata, next_hop);
1402 if (!sta) {
1403 rcu_read_unlock();
1404 return -ENOENT;
1405 }
1406
1407 mpath = mesh_path_add(sdata, dst);
1408 if (IS_ERR(mpath)) {
1409 rcu_read_unlock();
1410 return PTR_ERR(mpath);
1411 }
1412
1413 mesh_path_fix_nexthop(mpath, sta);
1414
1415 rcu_read_unlock();
1416 return 0;
1417 }
1418
1419 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1420 const u8 *dst)
1421 {
1422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1423
1424 if (dst)
1425 return mesh_path_del(sdata, dst);
1426
1427 mesh_path_flush_by_iface(sdata);
1428 return 0;
1429 }
1430
1431 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1432 const u8 *dst, const u8 *next_hop)
1433 {
1434 struct ieee80211_sub_if_data *sdata;
1435 struct mesh_path *mpath;
1436 struct sta_info *sta;
1437
1438 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1439
1440 rcu_read_lock();
1441
1442 sta = sta_info_get(sdata, next_hop);
1443 if (!sta) {
1444 rcu_read_unlock();
1445 return -ENOENT;
1446 }
1447
1448 mpath = mesh_path_lookup(sdata, dst);
1449 if (!mpath) {
1450 rcu_read_unlock();
1451 return -ENOENT;
1452 }
1453
1454 mesh_path_fix_nexthop(mpath, sta);
1455
1456 rcu_read_unlock();
1457 return 0;
1458 }
1459
1460 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1461 struct mpath_info *pinfo)
1462 {
1463 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1464
1465 if (next_hop_sta)
1466 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1467 else
1468 eth_zero_addr(next_hop);
1469
1470 memset(pinfo, 0, sizeof(*pinfo));
1471
1472 pinfo->generation = mesh_paths_generation;
1473
1474 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1475 MPATH_INFO_SN |
1476 MPATH_INFO_METRIC |
1477 MPATH_INFO_EXPTIME |
1478 MPATH_INFO_DISCOVERY_TIMEOUT |
1479 MPATH_INFO_DISCOVERY_RETRIES |
1480 MPATH_INFO_FLAGS;
1481
1482 pinfo->frame_qlen = mpath->frame_queue.qlen;
1483 pinfo->sn = mpath->sn;
1484 pinfo->metric = mpath->metric;
1485 if (time_before(jiffies, mpath->exp_time))
1486 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1487 pinfo->discovery_timeout =
1488 jiffies_to_msecs(mpath->discovery_timeout);
1489 pinfo->discovery_retries = mpath->discovery_retries;
1490 if (mpath->flags & MESH_PATH_ACTIVE)
1491 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1492 if (mpath->flags & MESH_PATH_RESOLVING)
1493 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1494 if (mpath->flags & MESH_PATH_SN_VALID)
1495 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1496 if (mpath->flags & MESH_PATH_FIXED)
1497 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1498 if (mpath->flags & MESH_PATH_RESOLVED)
1499 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1500 }
1501
1502 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1503 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1504
1505 {
1506 struct ieee80211_sub_if_data *sdata;
1507 struct mesh_path *mpath;
1508
1509 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1510
1511 rcu_read_lock();
1512 mpath = mesh_path_lookup(sdata, dst);
1513 if (!mpath) {
1514 rcu_read_unlock();
1515 return -ENOENT;
1516 }
1517 memcpy(dst, mpath->dst, ETH_ALEN);
1518 mpath_set_pinfo(mpath, next_hop, pinfo);
1519 rcu_read_unlock();
1520 return 0;
1521 }
1522
1523 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1524 int idx, u8 *dst, u8 *next_hop,
1525 struct mpath_info *pinfo)
1526 {
1527 struct ieee80211_sub_if_data *sdata;
1528 struct mesh_path *mpath;
1529
1530 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1531
1532 rcu_read_lock();
1533 mpath = mesh_path_lookup_by_idx(sdata, idx);
1534 if (!mpath) {
1535 rcu_read_unlock();
1536 return -ENOENT;
1537 }
1538 memcpy(dst, mpath->dst, ETH_ALEN);
1539 mpath_set_pinfo(mpath, next_hop, pinfo);
1540 rcu_read_unlock();
1541 return 0;
1542 }
1543
1544 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1545 struct mpath_info *pinfo)
1546 {
1547 memset(pinfo, 0, sizeof(*pinfo));
1548 memcpy(mpp, mpath->mpp, ETH_ALEN);
1549
1550 pinfo->generation = mpp_paths_generation;
1551 }
1552
1553 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1554 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1555
1556 {
1557 struct ieee80211_sub_if_data *sdata;
1558 struct mesh_path *mpath;
1559
1560 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1561
1562 rcu_read_lock();
1563 mpath = mpp_path_lookup(sdata, dst);
1564 if (!mpath) {
1565 rcu_read_unlock();
1566 return -ENOENT;
1567 }
1568 memcpy(dst, mpath->dst, ETH_ALEN);
1569 mpp_set_pinfo(mpath, mpp, pinfo);
1570 rcu_read_unlock();
1571 return 0;
1572 }
1573
1574 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1575 int idx, u8 *dst, u8 *mpp,
1576 struct mpath_info *pinfo)
1577 {
1578 struct ieee80211_sub_if_data *sdata;
1579 struct mesh_path *mpath;
1580
1581 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1582
1583 rcu_read_lock();
1584 mpath = mpp_path_lookup_by_idx(sdata, idx);
1585 if (!mpath) {
1586 rcu_read_unlock();
1587 return -ENOENT;
1588 }
1589 memcpy(dst, mpath->dst, ETH_ALEN);
1590 mpp_set_pinfo(mpath, mpp, pinfo);
1591 rcu_read_unlock();
1592 return 0;
1593 }
1594
1595 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1596 struct net_device *dev,
1597 struct mesh_config *conf)
1598 {
1599 struct ieee80211_sub_if_data *sdata;
1600 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1601
1602 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1603 return 0;
1604 }
1605
1606 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1607 {
1608 return (mask >> (parm-1)) & 0x1;
1609 }
1610
1611 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1612 const struct mesh_setup *setup)
1613 {
1614 u8 *new_ie;
1615 const u8 *old_ie;
1616 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1617 struct ieee80211_sub_if_data, u.mesh);
1618
1619 /* allocate information elements */
1620 new_ie = NULL;
1621 old_ie = ifmsh->ie;
1622
1623 if (setup->ie_len) {
1624 new_ie = kmemdup(setup->ie, setup->ie_len,
1625 GFP_KERNEL);
1626 if (!new_ie)
1627 return -ENOMEM;
1628 }
1629 ifmsh->ie_len = setup->ie_len;
1630 ifmsh->ie = new_ie;
1631 kfree(old_ie);
1632
1633 /* now copy the rest of the setup parameters */
1634 ifmsh->mesh_id_len = setup->mesh_id_len;
1635 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1636 ifmsh->mesh_sp_id = setup->sync_method;
1637 ifmsh->mesh_pp_id = setup->path_sel_proto;
1638 ifmsh->mesh_pm_id = setup->path_metric;
1639 ifmsh->user_mpm = setup->user_mpm;
1640 ifmsh->mesh_auth_id = setup->auth_id;
1641 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1642 if (setup->is_authenticated)
1643 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1644 if (setup->is_secure)
1645 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1646
1647 /* mcast rate setting in Mesh Node */
1648 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1649 sizeof(setup->mcast_rate));
1650 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1651
1652 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1653 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1654
1655 return 0;
1656 }
1657
1658 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1659 struct net_device *dev, u32 mask,
1660 const struct mesh_config *nconf)
1661 {
1662 struct mesh_config *conf;
1663 struct ieee80211_sub_if_data *sdata;
1664 struct ieee80211_if_mesh *ifmsh;
1665
1666 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1667 ifmsh = &sdata->u.mesh;
1668
1669 /* Set the config options which we are interested in setting */
1670 conf = &(sdata->u.mesh.mshcfg);
1671 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1672 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1673 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1674 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1675 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1676 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1677 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1678 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1679 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1680 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1681 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1682 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1683 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1684 conf->element_ttl = nconf->element_ttl;
1685 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1686 if (ifmsh->user_mpm)
1687 return -EBUSY;
1688 conf->auto_open_plinks = nconf->auto_open_plinks;
1689 }
1690 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1691 conf->dot11MeshNbrOffsetMaxNeighbor =
1692 nconf->dot11MeshNbrOffsetMaxNeighbor;
1693 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1694 conf->dot11MeshHWMPmaxPREQretries =
1695 nconf->dot11MeshHWMPmaxPREQretries;
1696 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1697 conf->path_refresh_time = nconf->path_refresh_time;
1698 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1699 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1700 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1701 conf->dot11MeshHWMPactivePathTimeout =
1702 nconf->dot11MeshHWMPactivePathTimeout;
1703 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1704 conf->dot11MeshHWMPpreqMinInterval =
1705 nconf->dot11MeshHWMPpreqMinInterval;
1706 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1707 conf->dot11MeshHWMPperrMinInterval =
1708 nconf->dot11MeshHWMPperrMinInterval;
1709 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1710 mask))
1711 conf->dot11MeshHWMPnetDiameterTraversalTime =
1712 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1714 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1715 ieee80211_mesh_root_setup(ifmsh);
1716 }
1717 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1718 /* our current gate announcement implementation rides on root
1719 * announcements, so require this ifmsh to also be a root node
1720 * */
1721 if (nconf->dot11MeshGateAnnouncementProtocol &&
1722 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1723 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1724 ieee80211_mesh_root_setup(ifmsh);
1725 }
1726 conf->dot11MeshGateAnnouncementProtocol =
1727 nconf->dot11MeshGateAnnouncementProtocol;
1728 }
1729 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1730 conf->dot11MeshHWMPRannInterval =
1731 nconf->dot11MeshHWMPRannInterval;
1732 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1733 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1734 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1735 /* our RSSI threshold implementation is supported only for
1736 * devices that report signal in dBm.
1737 */
1738 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1739 return -ENOTSUPP;
1740 conf->rssi_threshold = nconf->rssi_threshold;
1741 }
1742 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1743 conf->ht_opmode = nconf->ht_opmode;
1744 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1745 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1746 }
1747 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1748 conf->dot11MeshHWMPactivePathToRootTimeout =
1749 nconf->dot11MeshHWMPactivePathToRootTimeout;
1750 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1751 conf->dot11MeshHWMProotInterval =
1752 nconf->dot11MeshHWMProotInterval;
1753 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1754 conf->dot11MeshHWMPconfirmationInterval =
1755 nconf->dot11MeshHWMPconfirmationInterval;
1756 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1757 conf->power_mode = nconf->power_mode;
1758 ieee80211_mps_local_status_update(sdata);
1759 }
1760 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1761 conf->dot11MeshAwakeWindowDuration =
1762 nconf->dot11MeshAwakeWindowDuration;
1763 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1764 conf->plink_timeout = nconf->plink_timeout;
1765 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1766 return 0;
1767 }
1768
1769 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1770 const struct mesh_config *conf,
1771 const struct mesh_setup *setup)
1772 {
1773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1774 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1775 int err;
1776
1777 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1778 err = copy_mesh_setup(ifmsh, setup);
1779 if (err)
1780 return err;
1781
1782 /* can mesh use other SMPS modes? */
1783 sdata->smps_mode = IEEE80211_SMPS_OFF;
1784 sdata->needed_rx_chains = sdata->local->rx_chains;
1785
1786 mutex_lock(&sdata->local->mtx);
1787 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1788 IEEE80211_CHANCTX_SHARED);
1789 mutex_unlock(&sdata->local->mtx);
1790 if (err)
1791 return err;
1792
1793 return ieee80211_start_mesh(sdata);
1794 }
1795
1796 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1797 {
1798 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1799
1800 ieee80211_stop_mesh(sdata);
1801 mutex_lock(&sdata->local->mtx);
1802 ieee80211_vif_release_channel(sdata);
1803 mutex_unlock(&sdata->local->mtx);
1804
1805 return 0;
1806 }
1807 #endif
1808
1809 static int ieee80211_change_bss(struct wiphy *wiphy,
1810 struct net_device *dev,
1811 struct bss_parameters *params)
1812 {
1813 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1814 enum ieee80211_band band;
1815 u32 changed = 0;
1816
1817 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1818 return -ENOENT;
1819
1820 band = ieee80211_get_sdata_band(sdata);
1821
1822 if (params->use_cts_prot >= 0) {
1823 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1824 changed |= BSS_CHANGED_ERP_CTS_PROT;
1825 }
1826 if (params->use_short_preamble >= 0) {
1827 sdata->vif.bss_conf.use_short_preamble =
1828 params->use_short_preamble;
1829 changed |= BSS_CHANGED_ERP_PREAMBLE;
1830 }
1831
1832 if (!sdata->vif.bss_conf.use_short_slot &&
1833 band == IEEE80211_BAND_5GHZ) {
1834 sdata->vif.bss_conf.use_short_slot = true;
1835 changed |= BSS_CHANGED_ERP_SLOT;
1836 }
1837
1838 if (params->use_short_slot_time >= 0) {
1839 sdata->vif.bss_conf.use_short_slot =
1840 params->use_short_slot_time;
1841 changed |= BSS_CHANGED_ERP_SLOT;
1842 }
1843
1844 if (params->basic_rates) {
1845 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1846 wiphy->bands[band],
1847 params->basic_rates,
1848 params->basic_rates_len,
1849 &sdata->vif.bss_conf.basic_rates);
1850 changed |= BSS_CHANGED_BASIC_RATES;
1851 }
1852
1853 if (params->ap_isolate >= 0) {
1854 if (params->ap_isolate)
1855 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1856 else
1857 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1858 }
1859
1860 if (params->ht_opmode >= 0) {
1861 sdata->vif.bss_conf.ht_operation_mode =
1862 (u16) params->ht_opmode;
1863 changed |= BSS_CHANGED_HT;
1864 }
1865
1866 if (params->p2p_ctwindow >= 0) {
1867 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1868 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1869 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1870 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1871 changed |= BSS_CHANGED_P2P_PS;
1872 }
1873
1874 if (params->p2p_opp_ps > 0) {
1875 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1876 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1877 changed |= BSS_CHANGED_P2P_PS;
1878 } else if (params->p2p_opp_ps == 0) {
1879 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1880 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1881 changed |= BSS_CHANGED_P2P_PS;
1882 }
1883
1884 ieee80211_bss_info_change_notify(sdata, changed);
1885
1886 return 0;
1887 }
1888
1889 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1890 struct net_device *dev,
1891 struct ieee80211_txq_params *params)
1892 {
1893 struct ieee80211_local *local = wiphy_priv(wiphy);
1894 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1895 struct ieee80211_tx_queue_params p;
1896
1897 if (!local->ops->conf_tx)
1898 return -EOPNOTSUPP;
1899
1900 if (local->hw.queues < IEEE80211_NUM_ACS)
1901 return -EOPNOTSUPP;
1902
1903 memset(&p, 0, sizeof(p));
1904 p.aifs = params->aifs;
1905 p.cw_max = params->cwmax;
1906 p.cw_min = params->cwmin;
1907 p.txop = params->txop;
1908
1909 /*
1910 * Setting tx queue params disables u-apsd because it's only
1911 * called in master mode.
1912 */
1913 p.uapsd = false;
1914
1915 sdata->tx_conf[params->ac] = p;
1916 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1917 wiphy_debug(local->hw.wiphy,
1918 "failed to set TX queue parameters for AC %d\n",
1919 params->ac);
1920 return -EINVAL;
1921 }
1922
1923 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1924
1925 return 0;
1926 }
1927
1928 #ifdef CONFIG_PM
1929 static int ieee80211_suspend(struct wiphy *wiphy,
1930 struct cfg80211_wowlan *wowlan)
1931 {
1932 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1933 }
1934
1935 static int ieee80211_resume(struct wiphy *wiphy)
1936 {
1937 return __ieee80211_resume(wiphy_priv(wiphy));
1938 }
1939 #else
1940 #define ieee80211_suspend NULL
1941 #define ieee80211_resume NULL
1942 #endif
1943
1944 static int ieee80211_scan(struct wiphy *wiphy,
1945 struct cfg80211_scan_request *req)
1946 {
1947 struct ieee80211_sub_if_data *sdata;
1948
1949 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1950
1951 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1952 case NL80211_IFTYPE_STATION:
1953 case NL80211_IFTYPE_ADHOC:
1954 case NL80211_IFTYPE_MESH_POINT:
1955 case NL80211_IFTYPE_P2P_CLIENT:
1956 case NL80211_IFTYPE_P2P_DEVICE:
1957 break;
1958 case NL80211_IFTYPE_P2P_GO:
1959 if (sdata->local->ops->hw_scan)
1960 break;
1961 /*
1962 * FIXME: implement NoA while scanning in software,
1963 * for now fall through to allow scanning only when
1964 * beaconing hasn't been configured yet
1965 */
1966 case NL80211_IFTYPE_AP:
1967 /*
1968 * If the scan has been forced (and the driver supports
1969 * forcing), don't care about being beaconing already.
1970 * This will create problems to the attached stations (e.g. all
1971 * the frames sent while scanning on other channel will be
1972 * lost)
1973 */
1974 if (sdata->u.ap.beacon &&
1975 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1976 !(req->flags & NL80211_SCAN_FLAG_AP)))
1977 return -EOPNOTSUPP;
1978 break;
1979 default:
1980 return -EOPNOTSUPP;
1981 }
1982
1983 return ieee80211_request_scan(sdata, req);
1984 }
1985
1986 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
1987 {
1988 ieee80211_scan_cancel(wiphy_priv(wiphy));
1989 }
1990
1991 static int
1992 ieee80211_sched_scan_start(struct wiphy *wiphy,
1993 struct net_device *dev,
1994 struct cfg80211_sched_scan_request *req)
1995 {
1996 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1997
1998 if (!sdata->local->ops->sched_scan_start)
1999 return -EOPNOTSUPP;
2000
2001 return ieee80211_request_sched_scan_start(sdata, req);
2002 }
2003
2004 static int
2005 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2006 {
2007 struct ieee80211_local *local = wiphy_priv(wiphy);
2008
2009 if (!local->ops->sched_scan_stop)
2010 return -EOPNOTSUPP;
2011
2012 return ieee80211_request_sched_scan_stop(local);
2013 }
2014
2015 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2016 struct cfg80211_auth_request *req)
2017 {
2018 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2019 }
2020
2021 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2022 struct cfg80211_assoc_request *req)
2023 {
2024 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2025 }
2026
2027 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2028 struct cfg80211_deauth_request *req)
2029 {
2030 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2031 }
2032
2033 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2034 struct cfg80211_disassoc_request *req)
2035 {
2036 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2037 }
2038
2039 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2040 struct cfg80211_ibss_params *params)
2041 {
2042 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2043 }
2044
2045 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2046 {
2047 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2048 }
2049
2050 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2051 struct ocb_setup *setup)
2052 {
2053 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2054 }
2055
2056 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2057 {
2058 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2059 }
2060
2061 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2062 int rate[IEEE80211_NUM_BANDS])
2063 {
2064 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2065
2066 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2067 sizeof(int) * IEEE80211_NUM_BANDS);
2068
2069 return 0;
2070 }
2071
2072 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2073 {
2074 struct ieee80211_local *local = wiphy_priv(wiphy);
2075 int err;
2076
2077 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2078 ieee80211_check_fast_xmit_all(local);
2079
2080 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2081
2082 if (err) {
2083 ieee80211_check_fast_xmit_all(local);
2084 return err;
2085 }
2086 }
2087
2088 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2089 (changed & WIPHY_PARAM_DYN_ACK)) {
2090 s16 coverage_class;
2091
2092 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2093 wiphy->coverage_class : -1;
2094 err = drv_set_coverage_class(local, coverage_class);
2095
2096 if (err)
2097 return err;
2098 }
2099
2100 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2101 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2102
2103 if (err)
2104 return err;
2105 }
2106
2107 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2108 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2109 return -EINVAL;
2110 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2111 }
2112 if (changed & WIPHY_PARAM_RETRY_LONG) {
2113 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2114 return -EINVAL;
2115 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2116 }
2117 if (changed &
2118 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2119 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2120
2121 return 0;
2122 }
2123
2124 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2125 struct wireless_dev *wdev,
2126 enum nl80211_tx_power_setting type, int mbm)
2127 {
2128 struct ieee80211_local *local = wiphy_priv(wiphy);
2129 struct ieee80211_sub_if_data *sdata;
2130 enum nl80211_tx_power_setting txp_type = type;
2131 bool update_txp_type = false;
2132
2133 if (wdev) {
2134 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2135
2136 switch (type) {
2137 case NL80211_TX_POWER_AUTOMATIC:
2138 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2139 txp_type = NL80211_TX_POWER_LIMITED;
2140 break;
2141 case NL80211_TX_POWER_LIMITED:
2142 case NL80211_TX_POWER_FIXED:
2143 if (mbm < 0 || (mbm % 100))
2144 return -EOPNOTSUPP;
2145 sdata->user_power_level = MBM_TO_DBM(mbm);
2146 break;
2147 }
2148
2149 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2150 update_txp_type = true;
2151 sdata->vif.bss_conf.txpower_type = txp_type;
2152 }
2153
2154 ieee80211_recalc_txpower(sdata, update_txp_type);
2155
2156 return 0;
2157 }
2158
2159 switch (type) {
2160 case NL80211_TX_POWER_AUTOMATIC:
2161 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2162 txp_type = NL80211_TX_POWER_LIMITED;
2163 break;
2164 case NL80211_TX_POWER_LIMITED:
2165 case NL80211_TX_POWER_FIXED:
2166 if (mbm < 0 || (mbm % 100))
2167 return -EOPNOTSUPP;
2168 local->user_power_level = MBM_TO_DBM(mbm);
2169 break;
2170 }
2171
2172 mutex_lock(&local->iflist_mtx);
2173 list_for_each_entry(sdata, &local->interfaces, list) {
2174 sdata->user_power_level = local->user_power_level;
2175 if (txp_type != sdata->vif.bss_conf.txpower_type)
2176 update_txp_type = true;
2177 sdata->vif.bss_conf.txpower_type = txp_type;
2178 }
2179 list_for_each_entry(sdata, &local->interfaces, list)
2180 ieee80211_recalc_txpower(sdata, update_txp_type);
2181 mutex_unlock(&local->iflist_mtx);
2182
2183 return 0;
2184 }
2185
2186 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2187 struct wireless_dev *wdev,
2188 int *dbm)
2189 {
2190 struct ieee80211_local *local = wiphy_priv(wiphy);
2191 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2192
2193 if (local->ops->get_txpower)
2194 return drv_get_txpower(local, sdata, dbm);
2195
2196 if (!local->use_chanctx)
2197 *dbm = local->hw.conf.power_level;
2198 else
2199 *dbm = sdata->vif.bss_conf.txpower;
2200
2201 return 0;
2202 }
2203
2204 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2205 const u8 *addr)
2206 {
2207 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2208
2209 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2210
2211 return 0;
2212 }
2213
2214 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2215 {
2216 struct ieee80211_local *local = wiphy_priv(wiphy);
2217
2218 drv_rfkill_poll(local);
2219 }
2220
2221 #ifdef CONFIG_NL80211_TESTMODE
2222 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2223 struct wireless_dev *wdev,
2224 void *data, int len)
2225 {
2226 struct ieee80211_local *local = wiphy_priv(wiphy);
2227 struct ieee80211_vif *vif = NULL;
2228
2229 if (!local->ops->testmode_cmd)
2230 return -EOPNOTSUPP;
2231
2232 if (wdev) {
2233 struct ieee80211_sub_if_data *sdata;
2234
2235 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2236 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2237 vif = &sdata->vif;
2238 }
2239
2240 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2241 }
2242
2243 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2244 struct sk_buff *skb,
2245 struct netlink_callback *cb,
2246 void *data, int len)
2247 {
2248 struct ieee80211_local *local = wiphy_priv(wiphy);
2249
2250 if (!local->ops->testmode_dump)
2251 return -EOPNOTSUPP;
2252
2253 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2254 }
2255 #endif
2256
2257 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2258 enum ieee80211_smps_mode smps_mode)
2259 {
2260 struct sta_info *sta;
2261 enum ieee80211_smps_mode old_req;
2262
2263 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2264 return -EINVAL;
2265
2266 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2267 return 0;
2268
2269 old_req = sdata->u.ap.req_smps;
2270 sdata->u.ap.req_smps = smps_mode;
2271
2272 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2273 if (old_req == smps_mode ||
2274 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2275 return 0;
2276
2277 /* If no associated stations, there's no need to do anything */
2278 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2279 sdata->smps_mode = smps_mode;
2280 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2281 return 0;
2282 }
2283
2284 ht_dbg(sdata,
2285 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2286 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2287
2288 mutex_lock(&sdata->local->sta_mtx);
2289 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2290 /*
2291 * Only stations associated to our AP and
2292 * associated VLANs
2293 */
2294 if (sta->sdata->bss != &sdata->u.ap)
2295 continue;
2296
2297 /* This station doesn't support MIMO - skip it */
2298 if (sta_info_tx_streams(sta) == 1)
2299 continue;
2300
2301 /*
2302 * Don't wake up a STA just to send the action frame
2303 * unless we are getting more restrictive.
2304 */
2305 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2306 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2307 smps_mode)) {
2308 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2309 sta->sta.addr);
2310 continue;
2311 }
2312
2313 /*
2314 * If the STA is not authorized, wait until it gets
2315 * authorized and the action frame will be sent then.
2316 */
2317 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2318 continue;
2319
2320 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2321 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2322 sdata->vif.bss_conf.bssid);
2323 }
2324 mutex_unlock(&sdata->local->sta_mtx);
2325
2326 sdata->smps_mode = smps_mode;
2327 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2328
2329 return 0;
2330 }
2331
2332 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2333 enum ieee80211_smps_mode smps_mode)
2334 {
2335 const u8 *ap;
2336 enum ieee80211_smps_mode old_req;
2337 int err;
2338 struct sta_info *sta;
2339 bool tdls_peer_found = false;
2340
2341 lockdep_assert_held(&sdata->wdev.mtx);
2342
2343 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2344 return -EINVAL;
2345
2346 old_req = sdata->u.mgd.req_smps;
2347 sdata->u.mgd.req_smps = smps_mode;
2348
2349 if (old_req == smps_mode &&
2350 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2351 return 0;
2352
2353 /*
2354 * If not associated, or current association is not an HT
2355 * association, there's no need to do anything, just store
2356 * the new value until we associate.
2357 */
2358 if (!sdata->u.mgd.associated ||
2359 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2360 return 0;
2361
2362 ap = sdata->u.mgd.associated->bssid;
2363
2364 rcu_read_lock();
2365 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2366 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2367 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2368 continue;
2369
2370 tdls_peer_found = true;
2371 break;
2372 }
2373 rcu_read_unlock();
2374
2375 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2376 if (tdls_peer_found || !sdata->u.mgd.powersave)
2377 smps_mode = IEEE80211_SMPS_OFF;
2378 else
2379 smps_mode = IEEE80211_SMPS_DYNAMIC;
2380 }
2381
2382 /* send SM PS frame to AP */
2383 err = ieee80211_send_smps_action(sdata, smps_mode,
2384 ap, ap);
2385 if (err)
2386 sdata->u.mgd.req_smps = old_req;
2387 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2388 ieee80211_teardown_tdls_peers(sdata);
2389
2390 return err;
2391 }
2392
2393 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2394 bool enabled, int timeout)
2395 {
2396 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2397 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2398
2399 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2400 return -EOPNOTSUPP;
2401
2402 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2403 return -EOPNOTSUPP;
2404
2405 if (enabled == sdata->u.mgd.powersave &&
2406 timeout == local->dynamic_ps_forced_timeout)
2407 return 0;
2408
2409 sdata->u.mgd.powersave = enabled;
2410 local->dynamic_ps_forced_timeout = timeout;
2411
2412 /* no change, but if automatic follow powersave */
2413 sdata_lock(sdata);
2414 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2415 sdata_unlock(sdata);
2416
2417 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2418 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2419
2420 ieee80211_recalc_ps(local);
2421 ieee80211_recalc_ps_vif(sdata);
2422
2423 return 0;
2424 }
2425
2426 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2427 struct net_device *dev,
2428 s32 rssi_thold, u32 rssi_hyst)
2429 {
2430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2431 struct ieee80211_vif *vif = &sdata->vif;
2432 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2433
2434 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2435 rssi_hyst == bss_conf->cqm_rssi_hyst)
2436 return 0;
2437
2438 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2439 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2440 return -EOPNOTSUPP;
2441
2442 bss_conf->cqm_rssi_thold = rssi_thold;
2443 bss_conf->cqm_rssi_hyst = rssi_hyst;
2444 sdata->u.mgd.last_cqm_event_signal = 0;
2445
2446 /* tell the driver upon association, unless already associated */
2447 if (sdata->u.mgd.associated &&
2448 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2449 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2450
2451 return 0;
2452 }
2453
2454 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2455 struct net_device *dev,
2456 const u8 *addr,
2457 const struct cfg80211_bitrate_mask *mask)
2458 {
2459 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2460 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2461 int i, ret;
2462
2463 if (!ieee80211_sdata_running(sdata))
2464 return -ENETDOWN;
2465
2466 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2467 ret = drv_set_bitrate_mask(local, sdata, mask);
2468 if (ret)
2469 return ret;
2470 }
2471
2472 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2473 struct ieee80211_supported_band *sband = wiphy->bands[i];
2474 int j;
2475
2476 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2477 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2478 sizeof(mask->control[i].ht_mcs));
2479 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2480 mask->control[i].vht_mcs,
2481 sizeof(mask->control[i].vht_mcs));
2482
2483 sdata->rc_has_mcs_mask[i] = false;
2484 sdata->rc_has_vht_mcs_mask[i] = false;
2485 if (!sband)
2486 continue;
2487
2488 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2489 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2490 sdata->rc_has_mcs_mask[i] = true;
2491 break;
2492 }
2493 }
2494
2495 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2496 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2497 sdata->rc_has_vht_mcs_mask[i] = true;
2498 break;
2499 }
2500 }
2501 }
2502
2503 return 0;
2504 }
2505
2506 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2507 struct net_device *dev,
2508 struct cfg80211_chan_def *chandef,
2509 u32 cac_time_ms)
2510 {
2511 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2512 struct ieee80211_local *local = sdata->local;
2513 int err;
2514
2515 mutex_lock(&local->mtx);
2516 if (!list_empty(&local->roc_list) || local->scanning) {
2517 err = -EBUSY;
2518 goto out_unlock;
2519 }
2520
2521 /* whatever, but channel contexts should not complain about that one */
2522 sdata->smps_mode = IEEE80211_SMPS_OFF;
2523 sdata->needed_rx_chains = local->rx_chains;
2524
2525 err = ieee80211_vif_use_channel(sdata, chandef,
2526 IEEE80211_CHANCTX_SHARED);
2527 if (err)
2528 goto out_unlock;
2529
2530 ieee80211_queue_delayed_work(&sdata->local->hw,
2531 &sdata->dfs_cac_timer_work,
2532 msecs_to_jiffies(cac_time_ms));
2533
2534 out_unlock:
2535 mutex_unlock(&local->mtx);
2536 return err;
2537 }
2538
2539 static struct cfg80211_beacon_data *
2540 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2541 {
2542 struct cfg80211_beacon_data *new_beacon;
2543 u8 *pos;
2544 int len;
2545
2546 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2547 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2548 beacon->probe_resp_len;
2549
2550 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2551 if (!new_beacon)
2552 return NULL;
2553
2554 pos = (u8 *)(new_beacon + 1);
2555 if (beacon->head_len) {
2556 new_beacon->head_len = beacon->head_len;
2557 new_beacon->head = pos;
2558 memcpy(pos, beacon->head, beacon->head_len);
2559 pos += beacon->head_len;
2560 }
2561 if (beacon->tail_len) {
2562 new_beacon->tail_len = beacon->tail_len;
2563 new_beacon->tail = pos;
2564 memcpy(pos, beacon->tail, beacon->tail_len);
2565 pos += beacon->tail_len;
2566 }
2567 if (beacon->beacon_ies_len) {
2568 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2569 new_beacon->beacon_ies = pos;
2570 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2571 pos += beacon->beacon_ies_len;
2572 }
2573 if (beacon->proberesp_ies_len) {
2574 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2575 new_beacon->proberesp_ies = pos;
2576 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2577 pos += beacon->proberesp_ies_len;
2578 }
2579 if (beacon->assocresp_ies_len) {
2580 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2581 new_beacon->assocresp_ies = pos;
2582 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2583 pos += beacon->assocresp_ies_len;
2584 }
2585 if (beacon->probe_resp_len) {
2586 new_beacon->probe_resp_len = beacon->probe_resp_len;
2587 beacon->probe_resp = pos;
2588 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2589 pos += beacon->probe_resp_len;
2590 }
2591
2592 return new_beacon;
2593 }
2594
2595 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2596 {
2597 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2598
2599 ieee80211_queue_work(&sdata->local->hw,
2600 &sdata->csa_finalize_work);
2601 }
2602 EXPORT_SYMBOL(ieee80211_csa_finish);
2603
2604 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2605 u32 *changed)
2606 {
2607 int err;
2608
2609 switch (sdata->vif.type) {
2610 case NL80211_IFTYPE_AP:
2611 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2612 NULL);
2613 kfree(sdata->u.ap.next_beacon);
2614 sdata->u.ap.next_beacon = NULL;
2615
2616 if (err < 0)
2617 return err;
2618 *changed |= err;
2619 break;
2620 case NL80211_IFTYPE_ADHOC:
2621 err = ieee80211_ibss_finish_csa(sdata);
2622 if (err < 0)
2623 return err;
2624 *changed |= err;
2625 break;
2626 #ifdef CONFIG_MAC80211_MESH
2627 case NL80211_IFTYPE_MESH_POINT:
2628 err = ieee80211_mesh_finish_csa(sdata);
2629 if (err < 0)
2630 return err;
2631 *changed |= err;
2632 break;
2633 #endif
2634 default:
2635 WARN_ON(1);
2636 return -EINVAL;
2637 }
2638
2639 return 0;
2640 }
2641
2642 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2643 {
2644 struct ieee80211_local *local = sdata->local;
2645 u32 changed = 0;
2646 int err;
2647
2648 sdata_assert_lock(sdata);
2649 lockdep_assert_held(&local->mtx);
2650 lockdep_assert_held(&local->chanctx_mtx);
2651
2652 /*
2653 * using reservation isn't immediate as it may be deferred until later
2654 * with multi-vif. once reservation is complete it will re-schedule the
2655 * work with no reserved_chanctx so verify chandef to check if it
2656 * completed successfully
2657 */
2658
2659 if (sdata->reserved_chanctx) {
2660 /*
2661 * with multi-vif csa driver may call ieee80211_csa_finish()
2662 * many times while waiting for other interfaces to use their
2663 * reservations
2664 */
2665 if (sdata->reserved_ready)
2666 return 0;
2667
2668 return ieee80211_vif_use_reserved_context(sdata);
2669 }
2670
2671 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2672 &sdata->csa_chandef))
2673 return -EINVAL;
2674
2675 sdata->vif.csa_active = false;
2676
2677 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2678 if (err)
2679 return err;
2680
2681 ieee80211_bss_info_change_notify(sdata, changed);
2682
2683 if (sdata->csa_block_tx) {
2684 ieee80211_wake_vif_queues(local, sdata,
2685 IEEE80211_QUEUE_STOP_REASON_CSA);
2686 sdata->csa_block_tx = false;
2687 }
2688
2689 err = drv_post_channel_switch(sdata);
2690 if (err)
2691 return err;
2692
2693 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2694
2695 return 0;
2696 }
2697
2698 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2699 {
2700 if (__ieee80211_csa_finalize(sdata)) {
2701 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2702 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2703 GFP_KERNEL);
2704 }
2705 }
2706
2707 void ieee80211_csa_finalize_work(struct work_struct *work)
2708 {
2709 struct ieee80211_sub_if_data *sdata =
2710 container_of(work, struct ieee80211_sub_if_data,
2711 csa_finalize_work);
2712 struct ieee80211_local *local = sdata->local;
2713
2714 sdata_lock(sdata);
2715 mutex_lock(&local->mtx);
2716 mutex_lock(&local->chanctx_mtx);
2717
2718 /* AP might have been stopped while waiting for the lock. */
2719 if (!sdata->vif.csa_active)
2720 goto unlock;
2721
2722 if (!ieee80211_sdata_running(sdata))
2723 goto unlock;
2724
2725 ieee80211_csa_finalize(sdata);
2726
2727 unlock:
2728 mutex_unlock(&local->chanctx_mtx);
2729 mutex_unlock(&local->mtx);
2730 sdata_unlock(sdata);
2731 }
2732
2733 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2734 struct cfg80211_csa_settings *params,
2735 u32 *changed)
2736 {
2737 struct ieee80211_csa_settings csa = {};
2738 int err;
2739
2740 switch (sdata->vif.type) {
2741 case NL80211_IFTYPE_AP:
2742 sdata->u.ap.next_beacon =
2743 cfg80211_beacon_dup(&params->beacon_after);
2744 if (!sdata->u.ap.next_beacon)
2745 return -ENOMEM;
2746
2747 /*
2748 * With a count of 0, we don't have to wait for any
2749 * TBTT before switching, so complete the CSA
2750 * immediately. In theory, with a count == 1 we
2751 * should delay the switch until just before the next
2752 * TBTT, but that would complicate things so we switch
2753 * immediately too. If we would delay the switch
2754 * until the next TBTT, we would have to set the probe
2755 * response here.
2756 *
2757 * TODO: A channel switch with count <= 1 without
2758 * sending a CSA action frame is kind of useless,
2759 * because the clients won't know we're changing
2760 * channels. The action frame must be implemented
2761 * either here or in the userspace.
2762 */
2763 if (params->count <= 1)
2764 break;
2765
2766 if ((params->n_counter_offsets_beacon >
2767 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2768 (params->n_counter_offsets_presp >
2769 IEEE80211_MAX_CSA_COUNTERS_NUM))
2770 return -EINVAL;
2771
2772 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2773 csa.counter_offsets_presp = params->counter_offsets_presp;
2774 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2775 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2776 csa.count = params->count;
2777
2778 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2779 if (err < 0) {
2780 kfree(sdata->u.ap.next_beacon);
2781 return err;
2782 }
2783 *changed |= err;
2784
2785 break;
2786 case NL80211_IFTYPE_ADHOC:
2787 if (!sdata->vif.bss_conf.ibss_joined)
2788 return -EINVAL;
2789
2790 if (params->chandef.width != sdata->u.ibss.chandef.width)
2791 return -EINVAL;
2792
2793 switch (params->chandef.width) {
2794 case NL80211_CHAN_WIDTH_40:
2795 if (cfg80211_get_chandef_type(&params->chandef) !=
2796 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2797 return -EINVAL;
2798 case NL80211_CHAN_WIDTH_5:
2799 case NL80211_CHAN_WIDTH_10:
2800 case NL80211_CHAN_WIDTH_20_NOHT:
2801 case NL80211_CHAN_WIDTH_20:
2802 break;
2803 default:
2804 return -EINVAL;
2805 }
2806
2807 /* changes into another band are not supported */
2808 if (sdata->u.ibss.chandef.chan->band !=
2809 params->chandef.chan->band)
2810 return -EINVAL;
2811
2812 /* see comments in the NL80211_IFTYPE_AP block */
2813 if (params->count > 1) {
2814 err = ieee80211_ibss_csa_beacon(sdata, params);
2815 if (err < 0)
2816 return err;
2817 *changed |= err;
2818 }
2819
2820 ieee80211_send_action_csa(sdata, params);
2821
2822 break;
2823 #ifdef CONFIG_MAC80211_MESH
2824 case NL80211_IFTYPE_MESH_POINT: {
2825 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2826
2827 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
2828 return -EINVAL;
2829
2830 /* changes into another band are not supported */
2831 if (sdata->vif.bss_conf.chandef.chan->band !=
2832 params->chandef.chan->band)
2833 return -EINVAL;
2834
2835 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
2836 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
2837 if (!ifmsh->pre_value)
2838 ifmsh->pre_value = 1;
2839 else
2840 ifmsh->pre_value++;
2841 }
2842
2843 /* see comments in the NL80211_IFTYPE_AP block */
2844 if (params->count > 1) {
2845 err = ieee80211_mesh_csa_beacon(sdata, params);
2846 if (err < 0) {
2847 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
2848 return err;
2849 }
2850 *changed |= err;
2851 }
2852
2853 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
2854 ieee80211_send_action_csa(sdata, params);
2855
2856 break;
2857 }
2858 #endif
2859 default:
2860 return -EOPNOTSUPP;
2861 }
2862
2863 return 0;
2864 }
2865
2866 static int
2867 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2868 struct cfg80211_csa_settings *params)
2869 {
2870 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2871 struct ieee80211_local *local = sdata->local;
2872 struct ieee80211_channel_switch ch_switch;
2873 struct ieee80211_chanctx_conf *conf;
2874 struct ieee80211_chanctx *chanctx;
2875 u32 changed = 0;
2876 int err;
2877
2878 sdata_assert_lock(sdata);
2879 lockdep_assert_held(&local->mtx);
2880
2881 if (!list_empty(&local->roc_list) || local->scanning)
2882 return -EBUSY;
2883
2884 if (sdata->wdev.cac_started)
2885 return -EBUSY;
2886
2887 if (cfg80211_chandef_identical(&params->chandef,
2888 &sdata->vif.bss_conf.chandef))
2889 return -EINVAL;
2890
2891 /* don't allow another channel switch if one is already active. */
2892 if (sdata->vif.csa_active)
2893 return -EBUSY;
2894
2895 mutex_lock(&local->chanctx_mtx);
2896 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2897 lockdep_is_held(&local->chanctx_mtx));
2898 if (!conf) {
2899 err = -EBUSY;
2900 goto out;
2901 }
2902
2903 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
2904 if (!chanctx) {
2905 err = -EBUSY;
2906 goto out;
2907 }
2908
2909 ch_switch.timestamp = 0;
2910 ch_switch.device_timestamp = 0;
2911 ch_switch.block_tx = params->block_tx;
2912 ch_switch.chandef = params->chandef;
2913 ch_switch.count = params->count;
2914
2915 err = drv_pre_channel_switch(sdata, &ch_switch);
2916 if (err)
2917 goto out;
2918
2919 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
2920 chanctx->mode,
2921 params->radar_required);
2922 if (err)
2923 goto out;
2924
2925 /* if reservation is invalid then this will fail */
2926 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
2927 if (err) {
2928 ieee80211_vif_unreserve_chanctx(sdata);
2929 goto out;
2930 }
2931
2932 err = ieee80211_set_csa_beacon(sdata, params, &changed);
2933 if (err) {
2934 ieee80211_vif_unreserve_chanctx(sdata);
2935 goto out;
2936 }
2937
2938 sdata->csa_chandef = params->chandef;
2939 sdata->csa_block_tx = params->block_tx;
2940 sdata->vif.csa_active = true;
2941
2942 if (sdata->csa_block_tx)
2943 ieee80211_stop_vif_queues(local, sdata,
2944 IEEE80211_QUEUE_STOP_REASON_CSA);
2945
2946 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
2947 params->count);
2948
2949 if (changed) {
2950 ieee80211_bss_info_change_notify(sdata, changed);
2951 drv_channel_switch_beacon(sdata, &params->chandef);
2952 } else {
2953 /* if the beacon didn't change, we can finalize immediately */
2954 ieee80211_csa_finalize(sdata);
2955 }
2956
2957 out:
2958 mutex_unlock(&local->chanctx_mtx);
2959 return err;
2960 }
2961
2962 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2963 struct cfg80211_csa_settings *params)
2964 {
2965 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2966 struct ieee80211_local *local = sdata->local;
2967 int err;
2968
2969 mutex_lock(&local->mtx);
2970 err = __ieee80211_channel_switch(wiphy, dev, params);
2971 mutex_unlock(&local->mtx);
2972
2973 return err;
2974 }
2975
2976 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2977 {
2978 lockdep_assert_held(&local->mtx);
2979
2980 local->roc_cookie_counter++;
2981
2982 /* wow, you wrapped 64 bits ... more likely a bug */
2983 if (WARN_ON(local->roc_cookie_counter == 0))
2984 local->roc_cookie_counter++;
2985
2986 return local->roc_cookie_counter;
2987 }
2988
2989 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
2990 u64 *cookie, gfp_t gfp)
2991 {
2992 unsigned long spin_flags;
2993 struct sk_buff *ack_skb;
2994 int id;
2995
2996 ack_skb = skb_copy(skb, gfp);
2997 if (!ack_skb)
2998 return -ENOMEM;
2999
3000 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3001 id = idr_alloc(&local->ack_status_frames, ack_skb,
3002 1, 0x10000, GFP_ATOMIC);
3003 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3004
3005 if (id < 0) {
3006 kfree_skb(ack_skb);
3007 return -ENOMEM;
3008 }
3009
3010 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3011
3012 *cookie = ieee80211_mgmt_tx_cookie(local);
3013 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3014
3015 return 0;
3016 }
3017
3018 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3019 struct wireless_dev *wdev,
3020 u16 frame_type, bool reg)
3021 {
3022 struct ieee80211_local *local = wiphy_priv(wiphy);
3023 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3024
3025 switch (frame_type) {
3026 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3027 if (reg) {
3028 local->probe_req_reg++;
3029 sdata->vif.probe_req_reg++;
3030 } else {
3031 if (local->probe_req_reg)
3032 local->probe_req_reg--;
3033
3034 if (sdata->vif.probe_req_reg)
3035 sdata->vif.probe_req_reg--;
3036 }
3037
3038 if (!local->open_count)
3039 break;
3040
3041 if (sdata->vif.probe_req_reg == 1)
3042 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3043 FIF_PROBE_REQ);
3044 else if (sdata->vif.probe_req_reg == 0)
3045 drv_config_iface_filter(local, sdata, 0,
3046 FIF_PROBE_REQ);
3047
3048 ieee80211_configure_filter(local);
3049 break;
3050 default:
3051 break;
3052 }
3053 }
3054
3055 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3056 {
3057 struct ieee80211_local *local = wiphy_priv(wiphy);
3058
3059 if (local->started)
3060 return -EOPNOTSUPP;
3061
3062 return drv_set_antenna(local, tx_ant, rx_ant);
3063 }
3064
3065 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3066 {
3067 struct ieee80211_local *local = wiphy_priv(wiphy);
3068
3069 return drv_get_antenna(local, tx_ant, rx_ant);
3070 }
3071
3072 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3073 struct net_device *dev,
3074 struct cfg80211_gtk_rekey_data *data)
3075 {
3076 struct ieee80211_local *local = wiphy_priv(wiphy);
3077 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3078
3079 if (!local->ops->set_rekey_data)
3080 return -EOPNOTSUPP;
3081
3082 drv_set_rekey_data(local, sdata, data);
3083
3084 return 0;
3085 }
3086
3087 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3088 const u8 *peer, u64 *cookie)
3089 {
3090 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3091 struct ieee80211_local *local = sdata->local;
3092 struct ieee80211_qos_hdr *nullfunc;
3093 struct sk_buff *skb;
3094 int size = sizeof(*nullfunc);
3095 __le16 fc;
3096 bool qos;
3097 struct ieee80211_tx_info *info;
3098 struct sta_info *sta;
3099 struct ieee80211_chanctx_conf *chanctx_conf;
3100 enum ieee80211_band band;
3101 int ret;
3102
3103 /* the lock is needed to assign the cookie later */
3104 mutex_lock(&local->mtx);
3105
3106 rcu_read_lock();
3107 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3108 if (WARN_ON(!chanctx_conf)) {
3109 ret = -EINVAL;
3110 goto unlock;
3111 }
3112 band = chanctx_conf->def.chan->band;
3113 sta = sta_info_get_bss(sdata, peer);
3114 if (sta) {
3115 qos = sta->sta.wme;
3116 } else {
3117 ret = -ENOLINK;
3118 goto unlock;
3119 }
3120
3121 if (qos) {
3122 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3123 IEEE80211_STYPE_QOS_NULLFUNC |
3124 IEEE80211_FCTL_FROMDS);
3125 } else {
3126 size -= 2;
3127 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3128 IEEE80211_STYPE_NULLFUNC |
3129 IEEE80211_FCTL_FROMDS);
3130 }
3131
3132 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3133 if (!skb) {
3134 ret = -ENOMEM;
3135 goto unlock;
3136 }
3137
3138 skb->dev = dev;
3139
3140 skb_reserve(skb, local->hw.extra_tx_headroom);
3141
3142 nullfunc = (void *) skb_put(skb, size);
3143 nullfunc->frame_control = fc;
3144 nullfunc->duration_id = 0;
3145 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3146 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3147 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3148 nullfunc->seq_ctrl = 0;
3149
3150 info = IEEE80211_SKB_CB(skb);
3151
3152 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3153 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3154 info->band = band;
3155
3156 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3157 skb->priority = 7;
3158 if (qos)
3159 nullfunc->qos_ctrl = cpu_to_le16(7);
3160
3161 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3162 if (ret) {
3163 kfree_skb(skb);
3164 goto unlock;
3165 }
3166
3167 local_bh_disable();
3168 ieee80211_xmit(sdata, sta, skb);
3169 local_bh_enable();
3170
3171 ret = 0;
3172 unlock:
3173 rcu_read_unlock();
3174 mutex_unlock(&local->mtx);
3175
3176 return ret;
3177 }
3178
3179 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3180 struct wireless_dev *wdev,
3181 struct cfg80211_chan_def *chandef)
3182 {
3183 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3184 struct ieee80211_local *local = wiphy_priv(wiphy);
3185 struct ieee80211_chanctx_conf *chanctx_conf;
3186 int ret = -ENODATA;
3187
3188 rcu_read_lock();
3189 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3190 if (chanctx_conf) {
3191 *chandef = sdata->vif.bss_conf.chandef;
3192 ret = 0;
3193 } else if (local->open_count > 0 &&
3194 local->open_count == local->monitors &&
3195 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3196 if (local->use_chanctx)
3197 *chandef = local->monitor_chandef;
3198 else
3199 *chandef = local->_oper_chandef;
3200 ret = 0;
3201 }
3202 rcu_read_unlock();
3203
3204 return ret;
3205 }
3206
3207 #ifdef CONFIG_PM
3208 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3209 {
3210 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3211 }
3212 #endif
3213
3214 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3215 struct net_device *dev,
3216 struct cfg80211_qos_map *qos_map)
3217 {
3218 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3219 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3220
3221 if (qos_map) {
3222 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3223 if (!new_qos_map)
3224 return -ENOMEM;
3225 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3226 } else {
3227 /* A NULL qos_map was passed to disable QoS mapping */
3228 new_qos_map = NULL;
3229 }
3230
3231 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3232 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3233 if (old_qos_map)
3234 kfree_rcu(old_qos_map, rcu_head);
3235
3236 return 0;
3237 }
3238
3239 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3240 struct net_device *dev,
3241 struct cfg80211_chan_def *chandef)
3242 {
3243 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3244 int ret;
3245 u32 changed = 0;
3246
3247 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3248 if (ret == 0)
3249 ieee80211_bss_info_change_notify(sdata, changed);
3250
3251 return ret;
3252 }
3253
3254 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3255 u8 tsid, const u8 *peer, u8 up,
3256 u16 admitted_time)
3257 {
3258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3259 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3260 int ac = ieee802_1d_to_ac[up];
3261
3262 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3263 return -EOPNOTSUPP;
3264
3265 if (!(sdata->wmm_acm & BIT(up)))
3266 return -EINVAL;
3267
3268 if (ifmgd->tx_tspec[ac].admitted_time)
3269 return -EBUSY;
3270
3271 if (admitted_time) {
3272 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3273 ifmgd->tx_tspec[ac].tsid = tsid;
3274 ifmgd->tx_tspec[ac].up = up;
3275 }
3276
3277 return 0;
3278 }
3279
3280 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3281 u8 tsid, const u8 *peer)
3282 {
3283 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3284 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3285 struct ieee80211_local *local = wiphy_priv(wiphy);
3286 int ac;
3287
3288 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3289 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3290
3291 /* skip unused entries */
3292 if (!tx_tspec->admitted_time)
3293 continue;
3294
3295 if (tx_tspec->tsid != tsid)
3296 continue;
3297
3298 /* due to this new packets will be reassigned to non-ACM ACs */
3299 tx_tspec->up = -1;
3300
3301 /* Make sure that all packets have been sent to avoid to
3302 * restore the QoS params on packets that are still on the
3303 * queues.
3304 */
3305 synchronize_net();
3306 ieee80211_flush_queues(local, sdata, false);
3307
3308 /* restore the normal QoS parameters
3309 * (unconditionally to avoid races)
3310 */
3311 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3312 tx_tspec->downgraded = false;
3313 ieee80211_sta_handle_tspec_ac_params(sdata);
3314
3315 /* finally clear all the data */
3316 memset(tx_tspec, 0, sizeof(*tx_tspec));
3317
3318 return 0;
3319 }
3320
3321 return -ENOENT;
3322 }
3323
3324 const struct cfg80211_ops mac80211_config_ops = {
3325 .add_virtual_intf = ieee80211_add_iface,
3326 .del_virtual_intf = ieee80211_del_iface,
3327 .change_virtual_intf = ieee80211_change_iface,
3328 .start_p2p_device = ieee80211_start_p2p_device,
3329 .stop_p2p_device = ieee80211_stop_p2p_device,
3330 .add_key = ieee80211_add_key,
3331 .del_key = ieee80211_del_key,
3332 .get_key = ieee80211_get_key,
3333 .set_default_key = ieee80211_config_default_key,
3334 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3335 .start_ap = ieee80211_start_ap,
3336 .change_beacon = ieee80211_change_beacon,
3337 .stop_ap = ieee80211_stop_ap,
3338 .add_station = ieee80211_add_station,
3339 .del_station = ieee80211_del_station,
3340 .change_station = ieee80211_change_station,
3341 .get_station = ieee80211_get_station,
3342 .dump_station = ieee80211_dump_station,
3343 .dump_survey = ieee80211_dump_survey,
3344 #ifdef CONFIG_MAC80211_MESH
3345 .add_mpath = ieee80211_add_mpath,
3346 .del_mpath = ieee80211_del_mpath,
3347 .change_mpath = ieee80211_change_mpath,
3348 .get_mpath = ieee80211_get_mpath,
3349 .dump_mpath = ieee80211_dump_mpath,
3350 .get_mpp = ieee80211_get_mpp,
3351 .dump_mpp = ieee80211_dump_mpp,
3352 .update_mesh_config = ieee80211_update_mesh_config,
3353 .get_mesh_config = ieee80211_get_mesh_config,
3354 .join_mesh = ieee80211_join_mesh,
3355 .leave_mesh = ieee80211_leave_mesh,
3356 #endif
3357 .join_ocb = ieee80211_join_ocb,
3358 .leave_ocb = ieee80211_leave_ocb,
3359 .change_bss = ieee80211_change_bss,
3360 .set_txq_params = ieee80211_set_txq_params,
3361 .set_monitor_channel = ieee80211_set_monitor_channel,
3362 .suspend = ieee80211_suspend,
3363 .resume = ieee80211_resume,
3364 .scan = ieee80211_scan,
3365 .abort_scan = ieee80211_abort_scan,
3366 .sched_scan_start = ieee80211_sched_scan_start,
3367 .sched_scan_stop = ieee80211_sched_scan_stop,
3368 .auth = ieee80211_auth,
3369 .assoc = ieee80211_assoc,
3370 .deauth = ieee80211_deauth,
3371 .disassoc = ieee80211_disassoc,
3372 .join_ibss = ieee80211_join_ibss,
3373 .leave_ibss = ieee80211_leave_ibss,
3374 .set_mcast_rate = ieee80211_set_mcast_rate,
3375 .set_wiphy_params = ieee80211_set_wiphy_params,
3376 .set_tx_power = ieee80211_set_tx_power,
3377 .get_tx_power = ieee80211_get_tx_power,
3378 .set_wds_peer = ieee80211_set_wds_peer,
3379 .rfkill_poll = ieee80211_rfkill_poll,
3380 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3381 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3382 .set_power_mgmt = ieee80211_set_power_mgmt,
3383 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3384 .remain_on_channel = ieee80211_remain_on_channel,
3385 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3386 .mgmt_tx = ieee80211_mgmt_tx,
3387 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3388 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3389 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3390 .set_antenna = ieee80211_set_antenna,
3391 .get_antenna = ieee80211_get_antenna,
3392 .set_rekey_data = ieee80211_set_rekey_data,
3393 .tdls_oper = ieee80211_tdls_oper,
3394 .tdls_mgmt = ieee80211_tdls_mgmt,
3395 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3396 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3397 .probe_client = ieee80211_probe_client,
3398 .set_noack_map = ieee80211_set_noack_map,
3399 #ifdef CONFIG_PM
3400 .set_wakeup = ieee80211_set_wakeup,
3401 #endif
3402 .get_channel = ieee80211_cfg_get_channel,
3403 .start_radar_detection = ieee80211_start_radar_detection,
3404 .channel_switch = ieee80211_channel_switch,
3405 .set_qos_map = ieee80211_set_qos_map,
3406 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3407 .add_tx_ts = ieee80211_add_tx_ts,
3408 .del_tx_ts = ieee80211_del_tx_ts,
3409 };
Linux kernel - Deliverables
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