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Merge tag 'mac80211-next-for-davem-2015-10-05' of git://git.kernel.org/pub/scm/linux...
[mirror_ubuntu-zesty-kernel.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 "cfg.h"
21 #include "rate.h"
22 #include "mesh.h"
23 #include "wme.h"
24
25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
26 const char *name,
27 unsigned char name_assign_type,
28 enum nl80211_iftype type,
29 u32 *flags,
30 struct vif_params *params)
31 {
32 struct ieee80211_local *local = wiphy_priv(wiphy);
33 struct wireless_dev *wdev;
34 struct ieee80211_sub_if_data *sdata;
35 int err;
36
37 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
38 if (err)
39 return ERR_PTR(err);
40
41 if (type == NL80211_IFTYPE_MONITOR && flags) {
42 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
43 sdata->u.mntr_flags = *flags;
44 }
45
46 return wdev;
47 }
48
49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
50 {
51 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
52
53 return 0;
54 }
55
56 static int ieee80211_change_iface(struct wiphy *wiphy,
57 struct net_device *dev,
58 enum nl80211_iftype type, u32 *flags,
59 struct vif_params *params)
60 {
61 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
62 int ret;
63
64 ret = ieee80211_if_change_type(sdata, type);
65 if (ret)
66 return ret;
67
68 if (type == NL80211_IFTYPE_AP_VLAN &&
69 params && params->use_4addr == 0)
70 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
71 else if (type == NL80211_IFTYPE_STATION &&
72 params && params->use_4addr >= 0)
73 sdata->u.mgd.use_4addr = params->use_4addr;
74
75 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
76 struct ieee80211_local *local = sdata->local;
77
78 if (ieee80211_sdata_running(sdata)) {
79 u32 mask = MONITOR_FLAG_COOK_FRAMES |
80 MONITOR_FLAG_ACTIVE;
81
82 /*
83 * Prohibit MONITOR_FLAG_COOK_FRAMES and
84 * MONITOR_FLAG_ACTIVE to be changed while the
85 * interface is up.
86 * Else we would need to add a lot of cruft
87 * to update everything:
88 * cooked_mntrs, monitor and all fif_* counters
89 * reconfigure hardware
90 */
91 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
92 return -EBUSY;
93
94 ieee80211_adjust_monitor_flags(sdata, -1);
95 sdata->u.mntr_flags = *flags;
96 ieee80211_adjust_monitor_flags(sdata, 1);
97
98 ieee80211_configure_filter(local);
99 } else {
100 /*
101 * Because the interface is down, ieee80211_do_stop
102 * and ieee80211_do_open take care of "everything"
103 * mentioned in the comment above.
104 */
105 sdata->u.mntr_flags = *flags;
106 }
107 }
108
109 return 0;
110 }
111
112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
116 int ret;
117
118 mutex_lock(&sdata->local->chanctx_mtx);
119 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
120 mutex_unlock(&sdata->local->chanctx_mtx);
121 if (ret < 0)
122 return ret;
123
124 return ieee80211_do_open(wdev, true);
125 }
126
127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
128 struct wireless_dev *wdev)
129 {
130 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
131 }
132
133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
134 struct net_device *dev,
135 u16 noack_map)
136 {
137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
138
139 sdata->noack_map = noack_map;
140
141 ieee80211_check_fast_xmit_iface(sdata);
142
143 return 0;
144 }
145
146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
147 u8 key_idx, bool pairwise, const u8 *mac_addr,
148 struct key_params *params)
149 {
150 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
151 struct ieee80211_local *local = sdata->local;
152 struct sta_info *sta = NULL;
153 const struct ieee80211_cipher_scheme *cs = NULL;
154 struct ieee80211_key *key;
155 int err;
156
157 if (!ieee80211_sdata_running(sdata))
158 return -ENETDOWN;
159
160 /* reject WEP and TKIP keys if WEP failed to initialize */
161 switch (params->cipher) {
162 case WLAN_CIPHER_SUITE_WEP40:
163 case WLAN_CIPHER_SUITE_TKIP:
164 case WLAN_CIPHER_SUITE_WEP104:
165 if (IS_ERR(local->wep_tx_tfm))
166 return -EINVAL;
167 break;
168 case WLAN_CIPHER_SUITE_CCMP:
169 case WLAN_CIPHER_SUITE_CCMP_256:
170 case WLAN_CIPHER_SUITE_AES_CMAC:
171 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
174 case WLAN_CIPHER_SUITE_GCMP:
175 case WLAN_CIPHER_SUITE_GCMP_256:
176 break;
177 default:
178 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
179 break;
180 }
181
182 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
183 params->key, params->seq_len, params->seq,
184 cs);
185 if (IS_ERR(key))
186 return PTR_ERR(key);
187
188 if (pairwise)
189 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
190
191 mutex_lock(&local->sta_mtx);
192
193 if (mac_addr) {
194 if (ieee80211_vif_is_mesh(&sdata->vif))
195 sta = sta_info_get(sdata, mac_addr);
196 else
197 sta = sta_info_get_bss(sdata, mac_addr);
198 /*
199 * The ASSOC test makes sure the driver is ready to
200 * receive the key. When wpa_supplicant has roamed
201 * using FT, it attempts to set the key before
202 * association has completed, this rejects that attempt
203 * so it will set the key again after association.
204 *
205 * TODO: accept the key if we have a station entry and
206 * add it to the device after the station.
207 */
208 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
209 ieee80211_key_free_unused(key);
210 err = -ENOENT;
211 goto out_unlock;
212 }
213 }
214
215 switch (sdata->vif.type) {
216 case NL80211_IFTYPE_STATION:
217 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
218 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
219 break;
220 case NL80211_IFTYPE_AP:
221 case NL80211_IFTYPE_AP_VLAN:
222 /* Keys without a station are used for TX only */
223 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
224 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
225 break;
226 case NL80211_IFTYPE_ADHOC:
227 /* no MFP (yet) */
228 break;
229 case NL80211_IFTYPE_MESH_POINT:
230 #ifdef CONFIG_MAC80211_MESH
231 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
232 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
233 break;
234 #endif
235 case NL80211_IFTYPE_WDS:
236 case NL80211_IFTYPE_MONITOR:
237 case NL80211_IFTYPE_P2P_DEVICE:
238 case NL80211_IFTYPE_UNSPECIFIED:
239 case NUM_NL80211_IFTYPES:
240 case NL80211_IFTYPE_P2P_CLIENT:
241 case NL80211_IFTYPE_P2P_GO:
242 case NL80211_IFTYPE_OCB:
243 /* shouldn't happen */
244 WARN_ON_ONCE(1);
245 break;
246 }
247
248 if (sta)
249 sta->cipher_scheme = cs;
250
251 err = ieee80211_key_link(key, sdata, sta);
252
253 out_unlock:
254 mutex_unlock(&local->sta_mtx);
255
256 return err;
257 }
258
259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
260 u8 key_idx, bool pairwise, const u8 *mac_addr)
261 {
262 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
263 struct ieee80211_local *local = sdata->local;
264 struct sta_info *sta;
265 struct ieee80211_key *key = NULL;
266 int ret;
267
268 mutex_lock(&local->sta_mtx);
269 mutex_lock(&local->key_mtx);
270
271 if (mac_addr) {
272 ret = -ENOENT;
273
274 sta = sta_info_get_bss(sdata, mac_addr);
275 if (!sta)
276 goto out_unlock;
277
278 if (pairwise)
279 key = key_mtx_dereference(local, sta->ptk[key_idx]);
280 else
281 key = key_mtx_dereference(local, sta->gtk[key_idx]);
282 } else
283 key = key_mtx_dereference(local, sdata->keys[key_idx]);
284
285 if (!key) {
286 ret = -ENOENT;
287 goto out_unlock;
288 }
289
290 ieee80211_key_free(key, true);
291
292 ret = 0;
293 out_unlock:
294 mutex_unlock(&local->key_mtx);
295 mutex_unlock(&local->sta_mtx);
296
297 return ret;
298 }
299
300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
301 u8 key_idx, bool pairwise, const u8 *mac_addr,
302 void *cookie,
303 void (*callback)(void *cookie,
304 struct key_params *params))
305 {
306 struct ieee80211_sub_if_data *sdata;
307 struct sta_info *sta = NULL;
308 u8 seq[6] = {0};
309 struct key_params params;
310 struct ieee80211_key *key = NULL;
311 u64 pn64;
312 u32 iv32;
313 u16 iv16;
314 int err = -ENOENT;
315 struct ieee80211_key_seq kseq = {};
316
317 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
318
319 rcu_read_lock();
320
321 if (mac_addr) {
322 sta = sta_info_get_bss(sdata, mac_addr);
323 if (!sta)
324 goto out;
325
326 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
327 key = rcu_dereference(sta->ptk[key_idx]);
328 else if (!pairwise &&
329 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
330 key = rcu_dereference(sta->gtk[key_idx]);
331 } else
332 key = rcu_dereference(sdata->keys[key_idx]);
333
334 if (!key)
335 goto out;
336
337 memset(&params, 0, sizeof(params));
338
339 params.cipher = key->conf.cipher;
340
341 switch (key->conf.cipher) {
342 case WLAN_CIPHER_SUITE_TKIP:
343 iv32 = key->u.tkip.tx.iv32;
344 iv16 = key->u.tkip.tx.iv16;
345
346 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
347 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
348 drv_get_key_seq(sdata->local, key, &kseq);
349 iv32 = kseq.tkip.iv32;
350 iv16 = kseq.tkip.iv16;
351 }
352
353 seq[0] = iv16 & 0xff;
354 seq[1] = (iv16 >> 8) & 0xff;
355 seq[2] = iv32 & 0xff;
356 seq[3] = (iv32 >> 8) & 0xff;
357 seq[4] = (iv32 >> 16) & 0xff;
358 seq[5] = (iv32 >> 24) & 0xff;
359 params.seq = seq;
360 params.seq_len = 6;
361 break;
362 case WLAN_CIPHER_SUITE_CCMP:
363 case WLAN_CIPHER_SUITE_CCMP_256:
364 case WLAN_CIPHER_SUITE_AES_CMAC:
365 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
366 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
367 offsetof(typeof(kseq), aes_cmac));
368 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
369 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
370 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
371 offsetof(typeof(kseq), aes_gmac));
372 case WLAN_CIPHER_SUITE_GCMP:
373 case WLAN_CIPHER_SUITE_GCMP_256:
374 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
375 offsetof(typeof(kseq), gcmp));
376
377 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
378 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
379 drv_get_key_seq(sdata->local, key, &kseq);
380 memcpy(seq, kseq.ccmp.pn, 6);
381 } else {
382 pn64 = atomic64_read(&key->conf.tx_pn);
383 seq[0] = pn64;
384 seq[1] = pn64 >> 8;
385 seq[2] = pn64 >> 16;
386 seq[3] = pn64 >> 24;
387 seq[4] = pn64 >> 32;
388 seq[5] = pn64 >> 40;
389 }
390 params.seq = seq;
391 params.seq_len = 6;
392 break;
393 default:
394 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
395 break;
396 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
397 break;
398 drv_get_key_seq(sdata->local, key, &kseq);
399 params.seq = kseq.hw.seq;
400 params.seq_len = kseq.hw.seq_len;
401 break;
402 }
403
404 params.key = key->conf.key;
405 params.key_len = key->conf.keylen;
406
407 callback(cookie, &params);
408 err = 0;
409
410 out:
411 rcu_read_unlock();
412 return err;
413 }
414
415 static int ieee80211_config_default_key(struct wiphy *wiphy,
416 struct net_device *dev,
417 u8 key_idx, bool uni,
418 bool multi)
419 {
420 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
421
422 ieee80211_set_default_key(sdata, key_idx, uni, multi);
423
424 return 0;
425 }
426
427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
428 struct net_device *dev,
429 u8 key_idx)
430 {
431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
432
433 ieee80211_set_default_mgmt_key(sdata, key_idx);
434
435 return 0;
436 }
437
438 void sta_set_rate_info_tx(struct sta_info *sta,
439 const struct ieee80211_tx_rate *rate,
440 struct rate_info *rinfo)
441 {
442 rinfo->flags = 0;
443 if (rate->flags & IEEE80211_TX_RC_MCS) {
444 rinfo->flags |= RATE_INFO_FLAGS_MCS;
445 rinfo->mcs = rate->idx;
446 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
447 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
448 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
449 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
450 } else {
451 struct ieee80211_supported_band *sband;
452 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
453 u16 brate;
454
455 sband = sta->local->hw.wiphy->bands[
456 ieee80211_get_sdata_band(sta->sdata)];
457 brate = sband->bitrates[rate->idx].bitrate;
458 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
459 }
460 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
461 rinfo->bw = RATE_INFO_BW_40;
462 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
463 rinfo->bw = RATE_INFO_BW_80;
464 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
465 rinfo->bw = RATE_INFO_BW_160;
466 else
467 rinfo->bw = RATE_INFO_BW_20;
468 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
469 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
470 }
471
472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
473 {
474 rinfo->flags = 0;
475
476 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
477 rinfo->flags |= RATE_INFO_FLAGS_MCS;
478 rinfo->mcs = sta->last_rx_rate_idx;
479 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
480 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
481 rinfo->nss = sta->last_rx_rate_vht_nss;
482 rinfo->mcs = sta->last_rx_rate_idx;
483 } else {
484 struct ieee80211_supported_band *sband;
485 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
486 u16 brate;
487
488 sband = sta->local->hw.wiphy->bands[
489 ieee80211_get_sdata_band(sta->sdata)];
490 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
491 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
492 }
493
494 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
495 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
496
497 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
498 rinfo->bw = RATE_INFO_BW_5;
499 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
500 rinfo->bw = RATE_INFO_BW_10;
501 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
502 rinfo->bw = RATE_INFO_BW_40;
503 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
504 rinfo->bw = RATE_INFO_BW_80;
505 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
506 rinfo->bw = RATE_INFO_BW_160;
507 else
508 rinfo->bw = RATE_INFO_BW_20;
509 }
510
511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
512 int idx, u8 *mac, struct station_info *sinfo)
513 {
514 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
515 struct ieee80211_local *local = sdata->local;
516 struct sta_info *sta;
517 int ret = -ENOENT;
518
519 mutex_lock(&local->sta_mtx);
520
521 sta = sta_info_get_by_idx(sdata, idx);
522 if (sta) {
523 ret = 0;
524 memcpy(mac, sta->sta.addr, ETH_ALEN);
525 sta_set_sinfo(sta, sinfo);
526 }
527
528 mutex_unlock(&local->sta_mtx);
529
530 return ret;
531 }
532
533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
534 int idx, struct survey_info *survey)
535 {
536 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
537
538 return drv_get_survey(local, idx, survey);
539 }
540
541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
542 const u8 *mac, struct station_info *sinfo)
543 {
544 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
545 struct ieee80211_local *local = sdata->local;
546 struct sta_info *sta;
547 int ret = -ENOENT;
548
549 mutex_lock(&local->sta_mtx);
550
551 sta = sta_info_get_bss(sdata, mac);
552 if (sta) {
553 ret = 0;
554 sta_set_sinfo(sta, sinfo);
555 }
556
557 mutex_unlock(&local->sta_mtx);
558
559 return ret;
560 }
561
562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
563 struct cfg80211_chan_def *chandef)
564 {
565 struct ieee80211_local *local = wiphy_priv(wiphy);
566 struct ieee80211_sub_if_data *sdata;
567 int ret = 0;
568
569 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
570 return 0;
571
572 mutex_lock(&local->mtx);
573 mutex_lock(&local->iflist_mtx);
574 if (local->use_chanctx) {
575 sdata = rcu_dereference_protected(
576 local->monitor_sdata,
577 lockdep_is_held(&local->iflist_mtx));
578 if (sdata) {
579 ieee80211_vif_release_channel(sdata);
580 ret = ieee80211_vif_use_channel(sdata, chandef,
581 IEEE80211_CHANCTX_EXCLUSIVE);
582 }
583 } else if (local->open_count == local->monitors) {
584 local->_oper_chandef = *chandef;
585 ieee80211_hw_config(local, 0);
586 }
587
588 if (ret == 0)
589 local->monitor_chandef = *chandef;
590 mutex_unlock(&local->iflist_mtx);
591 mutex_unlock(&local->mtx);
592
593 return ret;
594 }
595
596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
597 const u8 *resp, size_t resp_len,
598 const struct ieee80211_csa_settings *csa)
599 {
600 struct probe_resp *new, *old;
601
602 if (!resp || !resp_len)
603 return 1;
604
605 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
606
607 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
608 if (!new)
609 return -ENOMEM;
610
611 new->len = resp_len;
612 memcpy(new->data, resp, resp_len);
613
614 if (csa)
615 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
616 csa->n_counter_offsets_presp *
617 sizeof(new->csa_counter_offsets[0]));
618
619 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
620 if (old)
621 kfree_rcu(old, rcu_head);
622
623 return 0;
624 }
625
626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
627 struct cfg80211_beacon_data *params,
628 const struct ieee80211_csa_settings *csa)
629 {
630 struct beacon_data *new, *old;
631 int new_head_len, new_tail_len;
632 int size, err;
633 u32 changed = BSS_CHANGED_BEACON;
634
635 old = sdata_dereference(sdata->u.ap.beacon, sdata);
636
637
638 /* Need to have a beacon head if we don't have one yet */
639 if (!params->head && !old)
640 return -EINVAL;
641
642 /* new or old head? */
643 if (params->head)
644 new_head_len = params->head_len;
645 else
646 new_head_len = old->head_len;
647
648 /* new or old tail? */
649 if (params->tail || !old)
650 /* params->tail_len will be zero for !params->tail */
651 new_tail_len = params->tail_len;
652 else
653 new_tail_len = old->tail_len;
654
655 size = sizeof(*new) + new_head_len + new_tail_len;
656
657 new = kzalloc(size, GFP_KERNEL);
658 if (!new)
659 return -ENOMEM;
660
661 /* start filling the new info now */
662
663 /*
664 * pointers go into the block we allocated,
665 * memory is | beacon_data | head | tail |
666 */
667 new->head = ((u8 *) new) + sizeof(*new);
668 new->tail = new->head + new_head_len;
669 new->head_len = new_head_len;
670 new->tail_len = new_tail_len;
671
672 if (csa) {
673 new->csa_current_counter = csa->count;
674 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
675 csa->n_counter_offsets_beacon *
676 sizeof(new->csa_counter_offsets[0]));
677 }
678
679 /* copy in head */
680 if (params->head)
681 memcpy(new->head, params->head, new_head_len);
682 else
683 memcpy(new->head, old->head, new_head_len);
684
685 /* copy in optional tail */
686 if (params->tail)
687 memcpy(new->tail, params->tail, new_tail_len);
688 else
689 if (old)
690 memcpy(new->tail, old->tail, new_tail_len);
691
692 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
693 params->probe_resp_len, csa);
694 if (err < 0)
695 return err;
696 if (err == 0)
697 changed |= BSS_CHANGED_AP_PROBE_RESP;
698
699 rcu_assign_pointer(sdata->u.ap.beacon, new);
700
701 if (old)
702 kfree_rcu(old, rcu_head);
703
704 return changed;
705 }
706
707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
708 struct cfg80211_ap_settings *params)
709 {
710 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
711 struct ieee80211_local *local = sdata->local;
712 struct beacon_data *old;
713 struct ieee80211_sub_if_data *vlan;
714 u32 changed = BSS_CHANGED_BEACON_INT |
715 BSS_CHANGED_BEACON_ENABLED |
716 BSS_CHANGED_BEACON |
717 BSS_CHANGED_SSID |
718 BSS_CHANGED_P2P_PS |
719 BSS_CHANGED_TXPOWER;
720 int err;
721
722 old = sdata_dereference(sdata->u.ap.beacon, sdata);
723 if (old)
724 return -EALREADY;
725
726 switch (params->smps_mode) {
727 case NL80211_SMPS_OFF:
728 sdata->smps_mode = IEEE80211_SMPS_OFF;
729 break;
730 case NL80211_SMPS_STATIC:
731 sdata->smps_mode = IEEE80211_SMPS_STATIC;
732 break;
733 case NL80211_SMPS_DYNAMIC:
734 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
735 break;
736 default:
737 return -EINVAL;
738 }
739 sdata->needed_rx_chains = sdata->local->rx_chains;
740
741 mutex_lock(&local->mtx);
742 err = ieee80211_vif_use_channel(sdata, &params->chandef,
743 IEEE80211_CHANCTX_SHARED);
744 if (!err)
745 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
746 mutex_unlock(&local->mtx);
747 if (err)
748 return err;
749
750 /*
751 * Apply control port protocol, this allows us to
752 * not encrypt dynamic WEP control frames.
753 */
754 sdata->control_port_protocol = params->crypto.control_port_ethertype;
755 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
756 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
757 &params->crypto,
758 sdata->vif.type);
759
760 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
761 vlan->control_port_protocol =
762 params->crypto.control_port_ethertype;
763 vlan->control_port_no_encrypt =
764 params->crypto.control_port_no_encrypt;
765 vlan->encrypt_headroom =
766 ieee80211_cs_headroom(sdata->local,
767 &params->crypto,
768 vlan->vif.type);
769 }
770
771 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
772 sdata->vif.bss_conf.dtim_period = params->dtim_period;
773 sdata->vif.bss_conf.enable_beacon = true;
774
775 sdata->vif.bss_conf.ssid_len = params->ssid_len;
776 if (params->ssid_len)
777 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
778 params->ssid_len);
779 sdata->vif.bss_conf.hidden_ssid =
780 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
781
782 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
783 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
784 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
785 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
786 if (params->p2p_opp_ps)
787 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
788 IEEE80211_P2P_OPPPS_ENABLE_BIT;
789
790 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
791 if (err < 0) {
792 ieee80211_vif_release_channel(sdata);
793 return err;
794 }
795 changed |= err;
796
797 err = drv_start_ap(sdata->local, sdata);
798 if (err) {
799 old = sdata_dereference(sdata->u.ap.beacon, sdata);
800
801 if (old)
802 kfree_rcu(old, rcu_head);
803 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
804 ieee80211_vif_release_channel(sdata);
805 return err;
806 }
807
808 ieee80211_recalc_dtim(local, sdata);
809 ieee80211_bss_info_change_notify(sdata, changed);
810
811 netif_carrier_on(dev);
812 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
813 netif_carrier_on(vlan->dev);
814
815 return 0;
816 }
817
818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
819 struct cfg80211_beacon_data *params)
820 {
821 struct ieee80211_sub_if_data *sdata;
822 struct beacon_data *old;
823 int err;
824
825 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
826 sdata_assert_lock(sdata);
827
828 /* don't allow changing the beacon while CSA is in place - offset
829 * of channel switch counter may change
830 */
831 if (sdata->vif.csa_active)
832 return -EBUSY;
833
834 old = sdata_dereference(sdata->u.ap.beacon, sdata);
835 if (!old)
836 return -ENOENT;
837
838 err = ieee80211_assign_beacon(sdata, params, NULL);
839 if (err < 0)
840 return err;
841 ieee80211_bss_info_change_notify(sdata, err);
842 return 0;
843 }
844
845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
846 {
847 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
848 struct ieee80211_sub_if_data *vlan;
849 struct ieee80211_local *local = sdata->local;
850 struct beacon_data *old_beacon;
851 struct probe_resp *old_probe_resp;
852 struct cfg80211_chan_def chandef;
853
854 sdata_assert_lock(sdata);
855
856 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
857 if (!old_beacon)
858 return -ENOENT;
859 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
860
861 /* abort any running channel switch */
862 mutex_lock(&local->mtx);
863 sdata->vif.csa_active = false;
864 if (sdata->csa_block_tx) {
865 ieee80211_wake_vif_queues(local, sdata,
866 IEEE80211_QUEUE_STOP_REASON_CSA);
867 sdata->csa_block_tx = false;
868 }
869
870 mutex_unlock(&local->mtx);
871
872 kfree(sdata->u.ap.next_beacon);
873 sdata->u.ap.next_beacon = NULL;
874
875 /* turn off carrier for this interface and dependent VLANs */
876 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
877 netif_carrier_off(vlan->dev);
878 netif_carrier_off(dev);
879
880 /* remove beacon and probe response */
881 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
882 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
883 kfree_rcu(old_beacon, rcu_head);
884 if (old_probe_resp)
885 kfree_rcu(old_probe_resp, rcu_head);
886 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
887
888 __sta_info_flush(sdata, true);
889 ieee80211_free_keys(sdata, true);
890
891 sdata->vif.bss_conf.enable_beacon = false;
892 sdata->vif.bss_conf.ssid_len = 0;
893 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
894 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
895
896 if (sdata->wdev.cac_started) {
897 chandef = sdata->vif.bss_conf.chandef;
898 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
899 cfg80211_cac_event(sdata->dev, &chandef,
900 NL80211_RADAR_CAC_ABORTED,
901 GFP_KERNEL);
902 }
903
904 drv_stop_ap(sdata->local, sdata);
905
906 /* free all potentially still buffered bcast frames */
907 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
908 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
909
910 mutex_lock(&local->mtx);
911 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
912 ieee80211_vif_release_channel(sdata);
913 mutex_unlock(&local->mtx);
914
915 return 0;
916 }
917
918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
919 struct iapp_layer2_update {
920 u8 da[ETH_ALEN]; /* broadcast */
921 u8 sa[ETH_ALEN]; /* STA addr */
922 __be16 len; /* 6 */
923 u8 dsap; /* 0 */
924 u8 ssap; /* 0 */
925 u8 control;
926 u8 xid_info[3];
927 } __packed;
928
929 static void ieee80211_send_layer2_update(struct sta_info *sta)
930 {
931 struct iapp_layer2_update *msg;
932 struct sk_buff *skb;
933
934 /* Send Level 2 Update Frame to update forwarding tables in layer 2
935 * bridge devices */
936
937 skb = dev_alloc_skb(sizeof(*msg));
938 if (!skb)
939 return;
940 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
941
942 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
943 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
944
945 eth_broadcast_addr(msg->da);
946 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
947 msg->len = htons(6);
948 msg->dsap = 0;
949 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
950 msg->control = 0xaf; /* XID response lsb.1111F101.
951 * F=0 (no poll command; unsolicited frame) */
952 msg->xid_info[0] = 0x81; /* XID format identifier */
953 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
954 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
955
956 skb->dev = sta->sdata->dev;
957 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
958 memset(skb->cb, 0, sizeof(skb->cb));
959 netif_rx_ni(skb);
960 }
961
962 static int sta_apply_auth_flags(struct ieee80211_local *local,
963 struct sta_info *sta,
964 u32 mask, u32 set)
965 {
966 int ret;
967
968 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
969 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
970 !test_sta_flag(sta, WLAN_STA_AUTH)) {
971 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
972 if (ret)
973 return ret;
974 }
975
976 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
977 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
978 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
979 /*
980 * When peer becomes associated, init rate control as
981 * well. Some drivers require rate control initialized
982 * before drv_sta_state() is called.
983 */
984 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
985 rate_control_rate_init(sta);
986
987 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
988 if (ret)
989 return ret;
990 }
991
992 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
993 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
994 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
995 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
996 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
997 else
998 ret = 0;
999 if (ret)
1000 return ret;
1001 }
1002
1003 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1004 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1005 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1006 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1007 if (ret)
1008 return ret;
1009 }
1010
1011 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1012 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1013 test_sta_flag(sta, WLAN_STA_AUTH)) {
1014 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1015 if (ret)
1016 return ret;
1017 }
1018
1019 return 0;
1020 }
1021
1022 static void sta_apply_mesh_params(struct ieee80211_local *local,
1023 struct sta_info *sta,
1024 struct station_parameters *params)
1025 {
1026 #ifdef CONFIG_MAC80211_MESH
1027 struct ieee80211_sub_if_data *sdata = sta->sdata;
1028 u32 changed = 0;
1029
1030 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1031 switch (params->plink_state) {
1032 case NL80211_PLINK_ESTAB:
1033 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1034 changed = mesh_plink_inc_estab_count(sdata);
1035 sta->mesh->plink_state = params->plink_state;
1036
1037 ieee80211_mps_sta_status_update(sta);
1038 changed |= ieee80211_mps_set_sta_local_pm(sta,
1039 sdata->u.mesh.mshcfg.power_mode);
1040 break;
1041 case NL80211_PLINK_LISTEN:
1042 case NL80211_PLINK_BLOCKED:
1043 case NL80211_PLINK_OPN_SNT:
1044 case NL80211_PLINK_OPN_RCVD:
1045 case NL80211_PLINK_CNF_RCVD:
1046 case NL80211_PLINK_HOLDING:
1047 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1048 changed = mesh_plink_dec_estab_count(sdata);
1049 sta->mesh->plink_state = params->plink_state;
1050
1051 ieee80211_mps_sta_status_update(sta);
1052 changed |= ieee80211_mps_set_sta_local_pm(sta,
1053 NL80211_MESH_POWER_UNKNOWN);
1054 break;
1055 default:
1056 /* nothing */
1057 break;
1058 }
1059 }
1060
1061 switch (params->plink_action) {
1062 case NL80211_PLINK_ACTION_NO_ACTION:
1063 /* nothing */
1064 break;
1065 case NL80211_PLINK_ACTION_OPEN:
1066 changed |= mesh_plink_open(sta);
1067 break;
1068 case NL80211_PLINK_ACTION_BLOCK:
1069 changed |= mesh_plink_block(sta);
1070 break;
1071 }
1072
1073 if (params->local_pm)
1074 changed |= ieee80211_mps_set_sta_local_pm(sta,
1075 params->local_pm);
1076
1077 ieee80211_mbss_info_change_notify(sdata, changed);
1078 #endif
1079 }
1080
1081 static int sta_apply_parameters(struct ieee80211_local *local,
1082 struct sta_info *sta,
1083 struct station_parameters *params)
1084 {
1085 int ret = 0;
1086 struct ieee80211_supported_band *sband;
1087 struct ieee80211_sub_if_data *sdata = sta->sdata;
1088 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1089 u32 mask, set;
1090
1091 sband = local->hw.wiphy->bands[band];
1092
1093 mask = params->sta_flags_mask;
1094 set = params->sta_flags_set;
1095
1096 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1097 /*
1098 * In mesh mode, ASSOCIATED isn't part of the nl80211
1099 * API but must follow AUTHENTICATED for driver state.
1100 */
1101 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1102 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1103 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1104 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1105 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1106 /*
1107 * TDLS -- everything follows authorized, but
1108 * only becoming authorized is possible, not
1109 * going back
1110 */
1111 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1112 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1113 BIT(NL80211_STA_FLAG_ASSOCIATED);
1114 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1115 BIT(NL80211_STA_FLAG_ASSOCIATED);
1116 }
1117 }
1118
1119 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1120 local->hw.queues >= IEEE80211_NUM_ACS)
1121 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1122
1123 /* auth flags will be set later for TDLS,
1124 * and for unassociated stations that move to assocaited */
1125 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1126 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1127 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1128 ret = sta_apply_auth_flags(local, sta, mask, set);
1129 if (ret)
1130 return ret;
1131 }
1132
1133 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1134 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1135 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1136 else
1137 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1138 }
1139
1140 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1141 if (set & BIT(NL80211_STA_FLAG_MFP))
1142 set_sta_flag(sta, WLAN_STA_MFP);
1143 else
1144 clear_sta_flag(sta, WLAN_STA_MFP);
1145 }
1146
1147 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1148 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1149 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1150 else
1151 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1152 }
1153
1154 /* mark TDLS channel switch support, if the AP allows it */
1155 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1156 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1157 params->ext_capab_len >= 4 &&
1158 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1159 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1160
1161 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1162 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1163 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1164 params->ext_capab_len >= 8 &&
1165 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1166 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1167
1168 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1169 sta->sta.uapsd_queues = params->uapsd_queues;
1170 sta->sta.max_sp = params->max_sp;
1171 }
1172
1173 /*
1174 * cfg80211 validates this (1-2007) and allows setting the AID
1175 * only when creating a new station entry
1176 */
1177 if (params->aid)
1178 sta->sta.aid = params->aid;
1179
1180 /*
1181 * Some of the following updates would be racy if called on an
1182 * existing station, via ieee80211_change_station(). However,
1183 * all such changes are rejected by cfg80211 except for updates
1184 * changing the supported rates on an existing but not yet used
1185 * TDLS peer.
1186 */
1187
1188 if (params->listen_interval >= 0)
1189 sta->listen_interval = params->listen_interval;
1190
1191 if (params->supported_rates) {
1192 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1193 sband, params->supported_rates,
1194 params->supported_rates_len,
1195 &sta->sta.supp_rates[band]);
1196 }
1197
1198 if (params->ht_capa)
1199 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1200 params->ht_capa, sta);
1201
1202 if (params->vht_capa)
1203 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1204 params->vht_capa, sta);
1205
1206 if (params->opmode_notif_used) {
1207 /* returned value is only needed for rc update, but the
1208 * rc isn't initialized here yet, so ignore it
1209 */
1210 __ieee80211_vht_handle_opmode(sdata, sta,
1211 params->opmode_notif,
1212 band, false);
1213 }
1214
1215 if (ieee80211_vif_is_mesh(&sdata->vif))
1216 sta_apply_mesh_params(local, sta, params);
1217
1218 /* set the STA state after all sta info from usermode has been set */
1219 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1220 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1221 ret = sta_apply_auth_flags(local, sta, mask, set);
1222 if (ret)
1223 return ret;
1224 }
1225
1226 return 0;
1227 }
1228
1229 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1230 const u8 *mac,
1231 struct station_parameters *params)
1232 {
1233 struct ieee80211_local *local = wiphy_priv(wiphy);
1234 struct sta_info *sta;
1235 struct ieee80211_sub_if_data *sdata;
1236 int err;
1237 int layer2_update;
1238
1239 if (params->vlan) {
1240 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1241
1242 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1243 sdata->vif.type != NL80211_IFTYPE_AP)
1244 return -EINVAL;
1245 } else
1246 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1247
1248 if (ether_addr_equal(mac, sdata->vif.addr))
1249 return -EINVAL;
1250
1251 if (is_multicast_ether_addr(mac))
1252 return -EINVAL;
1253
1254 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1255 if (!sta)
1256 return -ENOMEM;
1257
1258 /*
1259 * defaults -- if userspace wants something else we'll
1260 * change it accordingly in sta_apply_parameters()
1261 */
1262 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1263 !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1264 BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1265 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1266 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1267 }
1268 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1269 sta->sta.tdls = true;
1270
1271 err = sta_apply_parameters(local, sta, params);
1272 if (err) {
1273 sta_info_free(local, sta);
1274 return err;
1275 }
1276
1277 /*
1278 * for TDLS and for unassociated station, rate control should be
1279 * initialized only when rates are known and station is marked
1280 * authorized/associated
1281 */
1282 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1283 test_sta_flag(sta, WLAN_STA_ASSOC))
1284 rate_control_rate_init(sta);
1285
1286 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1287 sdata->vif.type == NL80211_IFTYPE_AP;
1288
1289 err = sta_info_insert_rcu(sta);
1290 if (err) {
1291 rcu_read_unlock();
1292 return err;
1293 }
1294
1295 if (layer2_update)
1296 ieee80211_send_layer2_update(sta);
1297
1298 rcu_read_unlock();
1299
1300 return 0;
1301 }
1302
1303 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1304 struct station_del_parameters *params)
1305 {
1306 struct ieee80211_sub_if_data *sdata;
1307
1308 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1309
1310 if (params->mac)
1311 return sta_info_destroy_addr_bss(sdata, params->mac);
1312
1313 sta_info_flush(sdata);
1314 return 0;
1315 }
1316
1317 static int ieee80211_change_station(struct wiphy *wiphy,
1318 struct net_device *dev, const u8 *mac,
1319 struct station_parameters *params)
1320 {
1321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1322 struct ieee80211_local *local = wiphy_priv(wiphy);
1323 struct sta_info *sta;
1324 struct ieee80211_sub_if_data *vlansdata;
1325 enum cfg80211_station_type statype;
1326 int err;
1327
1328 mutex_lock(&local->sta_mtx);
1329
1330 sta = sta_info_get_bss(sdata, mac);
1331 if (!sta) {
1332 err = -ENOENT;
1333 goto out_err;
1334 }
1335
1336 switch (sdata->vif.type) {
1337 case NL80211_IFTYPE_MESH_POINT:
1338 if (sdata->u.mesh.user_mpm)
1339 statype = CFG80211_STA_MESH_PEER_USER;
1340 else
1341 statype = CFG80211_STA_MESH_PEER_KERNEL;
1342 break;
1343 case NL80211_IFTYPE_ADHOC:
1344 statype = CFG80211_STA_IBSS;
1345 break;
1346 case NL80211_IFTYPE_STATION:
1347 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1348 statype = CFG80211_STA_AP_STA;
1349 break;
1350 }
1351 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1352 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1353 else
1354 statype = CFG80211_STA_TDLS_PEER_SETUP;
1355 break;
1356 case NL80211_IFTYPE_AP:
1357 case NL80211_IFTYPE_AP_VLAN:
1358 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1359 statype = CFG80211_STA_AP_CLIENT;
1360 else
1361 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1362 break;
1363 default:
1364 err = -EOPNOTSUPP;
1365 goto out_err;
1366 }
1367
1368 err = cfg80211_check_station_change(wiphy, params, statype);
1369 if (err)
1370 goto out_err;
1371
1372 if (params->vlan && params->vlan != sta->sdata->dev) {
1373 bool prev_4addr = false;
1374 bool new_4addr = false;
1375
1376 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1377
1378 if (params->vlan->ieee80211_ptr->use_4addr) {
1379 if (vlansdata->u.vlan.sta) {
1380 err = -EBUSY;
1381 goto out_err;
1382 }
1383
1384 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1385 new_4addr = true;
1386 }
1387
1388 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1389 sta->sdata->u.vlan.sta) {
1390 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1391 prev_4addr = true;
1392 }
1393
1394 sta->sdata = vlansdata;
1395 ieee80211_check_fast_xmit(sta);
1396
1397 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1398 prev_4addr != new_4addr) {
1399 if (new_4addr)
1400 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1401 else
1402 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1403 }
1404
1405 ieee80211_send_layer2_update(sta);
1406 }
1407
1408 err = sta_apply_parameters(local, sta, params);
1409 if (err)
1410 goto out_err;
1411
1412 mutex_unlock(&local->sta_mtx);
1413
1414 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1415 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1416 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1417 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1418 sta_info_tx_streams(sta) != 1) {
1419 ht_dbg(sta->sdata,
1420 "%pM just authorized and MIMO capable - update SMPS\n",
1421 sta->sta.addr);
1422 ieee80211_send_smps_action(sta->sdata,
1423 sta->sdata->bss->req_smps,
1424 sta->sta.addr,
1425 sta->sdata->vif.bss_conf.bssid);
1426 }
1427
1428 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1429 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1430 ieee80211_recalc_ps(local, -1);
1431 ieee80211_recalc_ps_vif(sdata);
1432 }
1433
1434 return 0;
1435 out_err:
1436 mutex_unlock(&local->sta_mtx);
1437 return err;
1438 }
1439
1440 #ifdef CONFIG_MAC80211_MESH
1441 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1442 const u8 *dst, const u8 *next_hop)
1443 {
1444 struct ieee80211_sub_if_data *sdata;
1445 struct mesh_path *mpath;
1446 struct sta_info *sta;
1447
1448 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1449
1450 rcu_read_lock();
1451 sta = sta_info_get(sdata, next_hop);
1452 if (!sta) {
1453 rcu_read_unlock();
1454 return -ENOENT;
1455 }
1456
1457 mpath = mesh_path_add(sdata, dst);
1458 if (IS_ERR(mpath)) {
1459 rcu_read_unlock();
1460 return PTR_ERR(mpath);
1461 }
1462
1463 mesh_path_fix_nexthop(mpath, sta);
1464
1465 rcu_read_unlock();
1466 return 0;
1467 }
1468
1469 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1470 const u8 *dst)
1471 {
1472 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1473
1474 if (dst)
1475 return mesh_path_del(sdata, dst);
1476
1477 mesh_path_flush_by_iface(sdata);
1478 return 0;
1479 }
1480
1481 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1482 const u8 *dst, const u8 *next_hop)
1483 {
1484 struct ieee80211_sub_if_data *sdata;
1485 struct mesh_path *mpath;
1486 struct sta_info *sta;
1487
1488 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1489
1490 rcu_read_lock();
1491
1492 sta = sta_info_get(sdata, next_hop);
1493 if (!sta) {
1494 rcu_read_unlock();
1495 return -ENOENT;
1496 }
1497
1498 mpath = mesh_path_lookup(sdata, dst);
1499 if (!mpath) {
1500 rcu_read_unlock();
1501 return -ENOENT;
1502 }
1503
1504 mesh_path_fix_nexthop(mpath, sta);
1505
1506 rcu_read_unlock();
1507 return 0;
1508 }
1509
1510 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1511 struct mpath_info *pinfo)
1512 {
1513 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1514
1515 if (next_hop_sta)
1516 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1517 else
1518 eth_zero_addr(next_hop);
1519
1520 memset(pinfo, 0, sizeof(*pinfo));
1521
1522 pinfo->generation = mesh_paths_generation;
1523
1524 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1525 MPATH_INFO_SN |
1526 MPATH_INFO_METRIC |
1527 MPATH_INFO_EXPTIME |
1528 MPATH_INFO_DISCOVERY_TIMEOUT |
1529 MPATH_INFO_DISCOVERY_RETRIES |
1530 MPATH_INFO_FLAGS;
1531
1532 pinfo->frame_qlen = mpath->frame_queue.qlen;
1533 pinfo->sn = mpath->sn;
1534 pinfo->metric = mpath->metric;
1535 if (time_before(jiffies, mpath->exp_time))
1536 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1537 pinfo->discovery_timeout =
1538 jiffies_to_msecs(mpath->discovery_timeout);
1539 pinfo->discovery_retries = mpath->discovery_retries;
1540 if (mpath->flags & MESH_PATH_ACTIVE)
1541 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1542 if (mpath->flags & MESH_PATH_RESOLVING)
1543 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1544 if (mpath->flags & MESH_PATH_SN_VALID)
1545 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1546 if (mpath->flags & MESH_PATH_FIXED)
1547 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1548 if (mpath->flags & MESH_PATH_RESOLVED)
1549 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1550 }
1551
1552 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1553 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1554
1555 {
1556 struct ieee80211_sub_if_data *sdata;
1557 struct mesh_path *mpath;
1558
1559 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1560
1561 rcu_read_lock();
1562 mpath = mesh_path_lookup(sdata, dst);
1563 if (!mpath) {
1564 rcu_read_unlock();
1565 return -ENOENT;
1566 }
1567 memcpy(dst, mpath->dst, ETH_ALEN);
1568 mpath_set_pinfo(mpath, next_hop, pinfo);
1569 rcu_read_unlock();
1570 return 0;
1571 }
1572
1573 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1574 int idx, u8 *dst, u8 *next_hop,
1575 struct mpath_info *pinfo)
1576 {
1577 struct ieee80211_sub_if_data *sdata;
1578 struct mesh_path *mpath;
1579
1580 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1581
1582 rcu_read_lock();
1583 mpath = mesh_path_lookup_by_idx(sdata, idx);
1584 if (!mpath) {
1585 rcu_read_unlock();
1586 return -ENOENT;
1587 }
1588 memcpy(dst, mpath->dst, ETH_ALEN);
1589 mpath_set_pinfo(mpath, next_hop, pinfo);
1590 rcu_read_unlock();
1591 return 0;
1592 }
1593
1594 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1595 struct mpath_info *pinfo)
1596 {
1597 memset(pinfo, 0, sizeof(*pinfo));
1598 memcpy(mpp, mpath->mpp, ETH_ALEN);
1599
1600 pinfo->generation = mpp_paths_generation;
1601 }
1602
1603 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1604 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1605
1606 {
1607 struct ieee80211_sub_if_data *sdata;
1608 struct mesh_path *mpath;
1609
1610 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1611
1612 rcu_read_lock();
1613 mpath = mpp_path_lookup(sdata, dst);
1614 if (!mpath) {
1615 rcu_read_unlock();
1616 return -ENOENT;
1617 }
1618 memcpy(dst, mpath->dst, ETH_ALEN);
1619 mpp_set_pinfo(mpath, mpp, pinfo);
1620 rcu_read_unlock();
1621 return 0;
1622 }
1623
1624 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1625 int idx, u8 *dst, u8 *mpp,
1626 struct mpath_info *pinfo)
1627 {
1628 struct ieee80211_sub_if_data *sdata;
1629 struct mesh_path *mpath;
1630
1631 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1632
1633 rcu_read_lock();
1634 mpath = mpp_path_lookup_by_idx(sdata, idx);
1635 if (!mpath) {
1636 rcu_read_unlock();
1637 return -ENOENT;
1638 }
1639 memcpy(dst, mpath->dst, ETH_ALEN);
1640 mpp_set_pinfo(mpath, mpp, pinfo);
1641 rcu_read_unlock();
1642 return 0;
1643 }
1644
1645 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1646 struct net_device *dev,
1647 struct mesh_config *conf)
1648 {
1649 struct ieee80211_sub_if_data *sdata;
1650 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1651
1652 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1653 return 0;
1654 }
1655
1656 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1657 {
1658 return (mask >> (parm-1)) & 0x1;
1659 }
1660
1661 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1662 const struct mesh_setup *setup)
1663 {
1664 u8 *new_ie;
1665 const u8 *old_ie;
1666 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1667 struct ieee80211_sub_if_data, u.mesh);
1668
1669 /* allocate information elements */
1670 new_ie = NULL;
1671 old_ie = ifmsh->ie;
1672
1673 if (setup->ie_len) {
1674 new_ie = kmemdup(setup->ie, setup->ie_len,
1675 GFP_KERNEL);
1676 if (!new_ie)
1677 return -ENOMEM;
1678 }
1679 ifmsh->ie_len = setup->ie_len;
1680 ifmsh->ie = new_ie;
1681 kfree(old_ie);
1682
1683 /* now copy the rest of the setup parameters */
1684 ifmsh->mesh_id_len = setup->mesh_id_len;
1685 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1686 ifmsh->mesh_sp_id = setup->sync_method;
1687 ifmsh->mesh_pp_id = setup->path_sel_proto;
1688 ifmsh->mesh_pm_id = setup->path_metric;
1689 ifmsh->user_mpm = setup->user_mpm;
1690 ifmsh->mesh_auth_id = setup->auth_id;
1691 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1692 if (setup->is_authenticated)
1693 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1694 if (setup->is_secure)
1695 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1696
1697 /* mcast rate setting in Mesh Node */
1698 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1699 sizeof(setup->mcast_rate));
1700 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1701
1702 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1703 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1704
1705 return 0;
1706 }
1707
1708 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1709 struct net_device *dev, u32 mask,
1710 const struct mesh_config *nconf)
1711 {
1712 struct mesh_config *conf;
1713 struct ieee80211_sub_if_data *sdata;
1714 struct ieee80211_if_mesh *ifmsh;
1715
1716 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1717 ifmsh = &sdata->u.mesh;
1718
1719 /* Set the config options which we are interested in setting */
1720 conf = &(sdata->u.mesh.mshcfg);
1721 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1722 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1724 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1725 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1726 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1727 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1728 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1729 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1730 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1731 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1732 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1733 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1734 conf->element_ttl = nconf->element_ttl;
1735 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1736 if (ifmsh->user_mpm)
1737 return -EBUSY;
1738 conf->auto_open_plinks = nconf->auto_open_plinks;
1739 }
1740 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1741 conf->dot11MeshNbrOffsetMaxNeighbor =
1742 nconf->dot11MeshNbrOffsetMaxNeighbor;
1743 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1744 conf->dot11MeshHWMPmaxPREQretries =
1745 nconf->dot11MeshHWMPmaxPREQretries;
1746 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1747 conf->path_refresh_time = nconf->path_refresh_time;
1748 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1749 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1750 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1751 conf->dot11MeshHWMPactivePathTimeout =
1752 nconf->dot11MeshHWMPactivePathTimeout;
1753 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1754 conf->dot11MeshHWMPpreqMinInterval =
1755 nconf->dot11MeshHWMPpreqMinInterval;
1756 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1757 conf->dot11MeshHWMPperrMinInterval =
1758 nconf->dot11MeshHWMPperrMinInterval;
1759 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1760 mask))
1761 conf->dot11MeshHWMPnetDiameterTraversalTime =
1762 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1763 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1764 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1765 ieee80211_mesh_root_setup(ifmsh);
1766 }
1767 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1768 /* our current gate announcement implementation rides on root
1769 * announcements, so require this ifmsh to also be a root node
1770 * */
1771 if (nconf->dot11MeshGateAnnouncementProtocol &&
1772 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1773 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1774 ieee80211_mesh_root_setup(ifmsh);
1775 }
1776 conf->dot11MeshGateAnnouncementProtocol =
1777 nconf->dot11MeshGateAnnouncementProtocol;
1778 }
1779 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1780 conf->dot11MeshHWMPRannInterval =
1781 nconf->dot11MeshHWMPRannInterval;
1782 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1783 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1784 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1785 /* our RSSI threshold implementation is supported only for
1786 * devices that report signal in dBm.
1787 */
1788 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1789 return -ENOTSUPP;
1790 conf->rssi_threshold = nconf->rssi_threshold;
1791 }
1792 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1793 conf->ht_opmode = nconf->ht_opmode;
1794 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1795 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1796 }
1797 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1798 conf->dot11MeshHWMPactivePathToRootTimeout =
1799 nconf->dot11MeshHWMPactivePathToRootTimeout;
1800 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1801 conf->dot11MeshHWMProotInterval =
1802 nconf->dot11MeshHWMProotInterval;
1803 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1804 conf->dot11MeshHWMPconfirmationInterval =
1805 nconf->dot11MeshHWMPconfirmationInterval;
1806 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1807 conf->power_mode = nconf->power_mode;
1808 ieee80211_mps_local_status_update(sdata);
1809 }
1810 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1811 conf->dot11MeshAwakeWindowDuration =
1812 nconf->dot11MeshAwakeWindowDuration;
1813 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1814 conf->plink_timeout = nconf->plink_timeout;
1815 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1816 return 0;
1817 }
1818
1819 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1820 const struct mesh_config *conf,
1821 const struct mesh_setup *setup)
1822 {
1823 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1824 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1825 int err;
1826
1827 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1828 err = copy_mesh_setup(ifmsh, setup);
1829 if (err)
1830 return err;
1831
1832 /* can mesh use other SMPS modes? */
1833 sdata->smps_mode = IEEE80211_SMPS_OFF;
1834 sdata->needed_rx_chains = sdata->local->rx_chains;
1835
1836 mutex_lock(&sdata->local->mtx);
1837 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1838 IEEE80211_CHANCTX_SHARED);
1839 mutex_unlock(&sdata->local->mtx);
1840 if (err)
1841 return err;
1842
1843 return ieee80211_start_mesh(sdata);
1844 }
1845
1846 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1847 {
1848 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1849
1850 ieee80211_stop_mesh(sdata);
1851 mutex_lock(&sdata->local->mtx);
1852 ieee80211_vif_release_channel(sdata);
1853 mutex_unlock(&sdata->local->mtx);
1854
1855 return 0;
1856 }
1857 #endif
1858
1859 static int ieee80211_change_bss(struct wiphy *wiphy,
1860 struct net_device *dev,
1861 struct bss_parameters *params)
1862 {
1863 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1864 enum ieee80211_band band;
1865 u32 changed = 0;
1866
1867 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1868 return -ENOENT;
1869
1870 band = ieee80211_get_sdata_band(sdata);
1871
1872 if (params->use_cts_prot >= 0) {
1873 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1874 changed |= BSS_CHANGED_ERP_CTS_PROT;
1875 }
1876 if (params->use_short_preamble >= 0) {
1877 sdata->vif.bss_conf.use_short_preamble =
1878 params->use_short_preamble;
1879 changed |= BSS_CHANGED_ERP_PREAMBLE;
1880 }
1881
1882 if (!sdata->vif.bss_conf.use_short_slot &&
1883 band == IEEE80211_BAND_5GHZ) {
1884 sdata->vif.bss_conf.use_short_slot = true;
1885 changed |= BSS_CHANGED_ERP_SLOT;
1886 }
1887
1888 if (params->use_short_slot_time >= 0) {
1889 sdata->vif.bss_conf.use_short_slot =
1890 params->use_short_slot_time;
1891 changed |= BSS_CHANGED_ERP_SLOT;
1892 }
1893
1894 if (params->basic_rates) {
1895 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1896 wiphy->bands[band],
1897 params->basic_rates,
1898 params->basic_rates_len,
1899 &sdata->vif.bss_conf.basic_rates);
1900 changed |= BSS_CHANGED_BASIC_RATES;
1901 }
1902
1903 if (params->ap_isolate >= 0) {
1904 if (params->ap_isolate)
1905 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1906 else
1907 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1908 }
1909
1910 if (params->ht_opmode >= 0) {
1911 sdata->vif.bss_conf.ht_operation_mode =
1912 (u16) params->ht_opmode;
1913 changed |= BSS_CHANGED_HT;
1914 }
1915
1916 if (params->p2p_ctwindow >= 0) {
1917 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1918 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1919 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1920 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1921 changed |= BSS_CHANGED_P2P_PS;
1922 }
1923
1924 if (params->p2p_opp_ps > 0) {
1925 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1926 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1927 changed |= BSS_CHANGED_P2P_PS;
1928 } else if (params->p2p_opp_ps == 0) {
1929 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1930 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1931 changed |= BSS_CHANGED_P2P_PS;
1932 }
1933
1934 ieee80211_bss_info_change_notify(sdata, changed);
1935
1936 return 0;
1937 }
1938
1939 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1940 struct net_device *dev,
1941 struct ieee80211_txq_params *params)
1942 {
1943 struct ieee80211_local *local = wiphy_priv(wiphy);
1944 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1945 struct ieee80211_tx_queue_params p;
1946
1947 if (!local->ops->conf_tx)
1948 return -EOPNOTSUPP;
1949
1950 if (local->hw.queues < IEEE80211_NUM_ACS)
1951 return -EOPNOTSUPP;
1952
1953 memset(&p, 0, sizeof(p));
1954 p.aifs = params->aifs;
1955 p.cw_max = params->cwmax;
1956 p.cw_min = params->cwmin;
1957 p.txop = params->txop;
1958
1959 /*
1960 * Setting tx queue params disables u-apsd because it's only
1961 * called in master mode.
1962 */
1963 p.uapsd = false;
1964
1965 sdata->tx_conf[params->ac] = p;
1966 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1967 wiphy_debug(local->hw.wiphy,
1968 "failed to set TX queue parameters for AC %d\n",
1969 params->ac);
1970 return -EINVAL;
1971 }
1972
1973 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1974
1975 return 0;
1976 }
1977
1978 #ifdef CONFIG_PM
1979 static int ieee80211_suspend(struct wiphy *wiphy,
1980 struct cfg80211_wowlan *wowlan)
1981 {
1982 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1983 }
1984
1985 static int ieee80211_resume(struct wiphy *wiphy)
1986 {
1987 return __ieee80211_resume(wiphy_priv(wiphy));
1988 }
1989 #else
1990 #define ieee80211_suspend NULL
1991 #define ieee80211_resume NULL
1992 #endif
1993
1994 static int ieee80211_scan(struct wiphy *wiphy,
1995 struct cfg80211_scan_request *req)
1996 {
1997 struct ieee80211_sub_if_data *sdata;
1998
1999 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2000
2001 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2002 case NL80211_IFTYPE_STATION:
2003 case NL80211_IFTYPE_ADHOC:
2004 case NL80211_IFTYPE_MESH_POINT:
2005 case NL80211_IFTYPE_P2P_CLIENT:
2006 case NL80211_IFTYPE_P2P_DEVICE:
2007 break;
2008 case NL80211_IFTYPE_P2P_GO:
2009 if (sdata->local->ops->hw_scan)
2010 break;
2011 /*
2012 * FIXME: implement NoA while scanning in software,
2013 * for now fall through to allow scanning only when
2014 * beaconing hasn't been configured yet
2015 */
2016 case NL80211_IFTYPE_AP:
2017 /*
2018 * If the scan has been forced (and the driver supports
2019 * forcing), don't care about being beaconing already.
2020 * This will create problems to the attached stations (e.g. all
2021 * the frames sent while scanning on other channel will be
2022 * lost)
2023 */
2024 if (sdata->u.ap.beacon &&
2025 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2026 !(req->flags & NL80211_SCAN_FLAG_AP)))
2027 return -EOPNOTSUPP;
2028 break;
2029 default:
2030 return -EOPNOTSUPP;
2031 }
2032
2033 return ieee80211_request_scan(sdata, req);
2034 }
2035
2036 static int
2037 ieee80211_sched_scan_start(struct wiphy *wiphy,
2038 struct net_device *dev,
2039 struct cfg80211_sched_scan_request *req)
2040 {
2041 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2042
2043 if (!sdata->local->ops->sched_scan_start)
2044 return -EOPNOTSUPP;
2045
2046 return ieee80211_request_sched_scan_start(sdata, req);
2047 }
2048
2049 static int
2050 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2051 {
2052 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2053
2054 if (!sdata->local->ops->sched_scan_stop)
2055 return -EOPNOTSUPP;
2056
2057 return ieee80211_request_sched_scan_stop(sdata);
2058 }
2059
2060 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2061 struct cfg80211_auth_request *req)
2062 {
2063 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2067 struct cfg80211_assoc_request *req)
2068 {
2069 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2073 struct cfg80211_deauth_request *req)
2074 {
2075 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2076 }
2077
2078 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2079 struct cfg80211_disassoc_request *req)
2080 {
2081 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2082 }
2083
2084 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2085 struct cfg80211_ibss_params *params)
2086 {
2087 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2088 }
2089
2090 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2091 {
2092 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2093 }
2094
2095 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2096 struct ocb_setup *setup)
2097 {
2098 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2099 }
2100
2101 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2102 {
2103 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2104 }
2105
2106 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2107 int rate[IEEE80211_NUM_BANDS])
2108 {
2109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2110
2111 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2112 sizeof(int) * IEEE80211_NUM_BANDS);
2113
2114 return 0;
2115 }
2116
2117 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2118 {
2119 struct ieee80211_local *local = wiphy_priv(wiphy);
2120 int err;
2121
2122 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2123 ieee80211_check_fast_xmit_all(local);
2124
2125 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2126
2127 if (err) {
2128 ieee80211_check_fast_xmit_all(local);
2129 return err;
2130 }
2131 }
2132
2133 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2134 (changed & WIPHY_PARAM_DYN_ACK)) {
2135 s16 coverage_class;
2136
2137 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2138 wiphy->coverage_class : -1;
2139 err = drv_set_coverage_class(local, coverage_class);
2140
2141 if (err)
2142 return err;
2143 }
2144
2145 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2146 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2147
2148 if (err)
2149 return err;
2150 }
2151
2152 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2153 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2154 return -EINVAL;
2155 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2156 }
2157 if (changed & WIPHY_PARAM_RETRY_LONG) {
2158 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2159 return -EINVAL;
2160 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2161 }
2162 if (changed &
2163 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2164 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2165
2166 return 0;
2167 }
2168
2169 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2170 struct wireless_dev *wdev,
2171 enum nl80211_tx_power_setting type, int mbm)
2172 {
2173 struct ieee80211_local *local = wiphy_priv(wiphy);
2174 struct ieee80211_sub_if_data *sdata;
2175 enum nl80211_tx_power_setting txp_type = type;
2176 bool update_txp_type = false;
2177
2178 if (wdev) {
2179 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2180
2181 switch (type) {
2182 case NL80211_TX_POWER_AUTOMATIC:
2183 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2184 txp_type = NL80211_TX_POWER_LIMITED;
2185 break;
2186 case NL80211_TX_POWER_LIMITED:
2187 case NL80211_TX_POWER_FIXED:
2188 if (mbm < 0 || (mbm % 100))
2189 return -EOPNOTSUPP;
2190 sdata->user_power_level = MBM_TO_DBM(mbm);
2191 break;
2192 }
2193
2194 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2195 update_txp_type = true;
2196 sdata->vif.bss_conf.txpower_type = txp_type;
2197 }
2198
2199 ieee80211_recalc_txpower(sdata, update_txp_type);
2200
2201 return 0;
2202 }
2203
2204 switch (type) {
2205 case NL80211_TX_POWER_AUTOMATIC:
2206 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2207 txp_type = NL80211_TX_POWER_LIMITED;
2208 break;
2209 case NL80211_TX_POWER_LIMITED:
2210 case NL80211_TX_POWER_FIXED:
2211 if (mbm < 0 || (mbm % 100))
2212 return -EOPNOTSUPP;
2213 local->user_power_level = MBM_TO_DBM(mbm);
2214 break;
2215 }
2216
2217 mutex_lock(&local->iflist_mtx);
2218 list_for_each_entry(sdata, &local->interfaces, list) {
2219 sdata->user_power_level = local->user_power_level;
2220 if (txp_type != sdata->vif.bss_conf.txpower_type)
2221 update_txp_type = true;
2222 sdata->vif.bss_conf.txpower_type = txp_type;
2223 }
2224 list_for_each_entry(sdata, &local->interfaces, list)
2225 ieee80211_recalc_txpower(sdata, update_txp_type);
2226 mutex_unlock(&local->iflist_mtx);
2227
2228 return 0;
2229 }
2230
2231 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2232 struct wireless_dev *wdev,
2233 int *dbm)
2234 {
2235 struct ieee80211_local *local = wiphy_priv(wiphy);
2236 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2237
2238 if (local->ops->get_txpower)
2239 return drv_get_txpower(local, sdata, dbm);
2240
2241 if (!local->use_chanctx)
2242 *dbm = local->hw.conf.power_level;
2243 else
2244 *dbm = sdata->vif.bss_conf.txpower;
2245
2246 return 0;
2247 }
2248
2249 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2250 const u8 *addr)
2251 {
2252 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2253
2254 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2255
2256 return 0;
2257 }
2258
2259 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2260 {
2261 struct ieee80211_local *local = wiphy_priv(wiphy);
2262
2263 drv_rfkill_poll(local);
2264 }
2265
2266 #ifdef CONFIG_NL80211_TESTMODE
2267 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2268 struct wireless_dev *wdev,
2269 void *data, int len)
2270 {
2271 struct ieee80211_local *local = wiphy_priv(wiphy);
2272 struct ieee80211_vif *vif = NULL;
2273
2274 if (!local->ops->testmode_cmd)
2275 return -EOPNOTSUPP;
2276
2277 if (wdev) {
2278 struct ieee80211_sub_if_data *sdata;
2279
2280 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2281 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2282 vif = &sdata->vif;
2283 }
2284
2285 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2286 }
2287
2288 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2289 struct sk_buff *skb,
2290 struct netlink_callback *cb,
2291 void *data, int len)
2292 {
2293 struct ieee80211_local *local = wiphy_priv(wiphy);
2294
2295 if (!local->ops->testmode_dump)
2296 return -EOPNOTSUPP;
2297
2298 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2299 }
2300 #endif
2301
2302 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2303 enum ieee80211_smps_mode smps_mode)
2304 {
2305 struct sta_info *sta;
2306 enum ieee80211_smps_mode old_req;
2307
2308 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2309 return -EINVAL;
2310
2311 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2312 return 0;
2313
2314 old_req = sdata->u.ap.req_smps;
2315 sdata->u.ap.req_smps = smps_mode;
2316
2317 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2318 if (old_req == smps_mode ||
2319 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2320 return 0;
2321
2322 /* If no associated stations, there's no need to do anything */
2323 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2324 sdata->smps_mode = smps_mode;
2325 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2326 return 0;
2327 }
2328
2329 ht_dbg(sdata,
2330 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2331 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2332
2333 mutex_lock(&sdata->local->sta_mtx);
2334 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2335 /*
2336 * Only stations associated to our AP and
2337 * associated VLANs
2338 */
2339 if (sta->sdata->bss != &sdata->u.ap)
2340 continue;
2341
2342 /* This station doesn't support MIMO - skip it */
2343 if (sta_info_tx_streams(sta) == 1)
2344 continue;
2345
2346 /*
2347 * Don't wake up a STA just to send the action frame
2348 * unless we are getting more restrictive.
2349 */
2350 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2351 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2352 smps_mode)) {
2353 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2354 sta->sta.addr);
2355 continue;
2356 }
2357
2358 /*
2359 * If the STA is not authorized, wait until it gets
2360 * authorized and the action frame will be sent then.
2361 */
2362 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2363 continue;
2364
2365 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2366 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2367 sdata->vif.bss_conf.bssid);
2368 }
2369 mutex_unlock(&sdata->local->sta_mtx);
2370
2371 sdata->smps_mode = smps_mode;
2372 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2373
2374 return 0;
2375 }
2376
2377 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2378 enum ieee80211_smps_mode smps_mode)
2379 {
2380 const u8 *ap;
2381 enum ieee80211_smps_mode old_req;
2382 int err;
2383 struct sta_info *sta;
2384 bool tdls_peer_found = false;
2385
2386 lockdep_assert_held(&sdata->wdev.mtx);
2387
2388 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2389 return -EINVAL;
2390
2391 old_req = sdata->u.mgd.req_smps;
2392 sdata->u.mgd.req_smps = smps_mode;
2393
2394 if (old_req == smps_mode &&
2395 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2396 return 0;
2397
2398 /*
2399 * If not associated, or current association is not an HT
2400 * association, there's no need to do anything, just store
2401 * the new value until we associate.
2402 */
2403 if (!sdata->u.mgd.associated ||
2404 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2405 return 0;
2406
2407 ap = sdata->u.mgd.associated->bssid;
2408
2409 rcu_read_lock();
2410 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2411 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2412 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2413 continue;
2414
2415 tdls_peer_found = true;
2416 break;
2417 }
2418 rcu_read_unlock();
2419
2420 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2421 if (tdls_peer_found || !sdata->u.mgd.powersave)
2422 smps_mode = IEEE80211_SMPS_OFF;
2423 else
2424 smps_mode = IEEE80211_SMPS_DYNAMIC;
2425 }
2426
2427 /* send SM PS frame to AP */
2428 err = ieee80211_send_smps_action(sdata, smps_mode,
2429 ap, ap);
2430 if (err)
2431 sdata->u.mgd.req_smps = old_req;
2432 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2433 ieee80211_teardown_tdls_peers(sdata);
2434
2435 return err;
2436 }
2437
2438 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2439 bool enabled, int timeout)
2440 {
2441 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2442 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2443
2444 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2445 return -EOPNOTSUPP;
2446
2447 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2448 return -EOPNOTSUPP;
2449
2450 if (enabled == sdata->u.mgd.powersave &&
2451 timeout == local->dynamic_ps_forced_timeout)
2452 return 0;
2453
2454 sdata->u.mgd.powersave = enabled;
2455 local->dynamic_ps_forced_timeout = timeout;
2456
2457 /* no change, but if automatic follow powersave */
2458 sdata_lock(sdata);
2459 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2460 sdata_unlock(sdata);
2461
2462 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2463 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2464
2465 ieee80211_recalc_ps(local, -1);
2466 ieee80211_recalc_ps_vif(sdata);
2467
2468 return 0;
2469 }
2470
2471 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2472 struct net_device *dev,
2473 s32 rssi_thold, u32 rssi_hyst)
2474 {
2475 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2476 struct ieee80211_vif *vif = &sdata->vif;
2477 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2478
2479 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2480 rssi_hyst == bss_conf->cqm_rssi_hyst)
2481 return 0;
2482
2483 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2484 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2485 return -EOPNOTSUPP;
2486
2487 bss_conf->cqm_rssi_thold = rssi_thold;
2488 bss_conf->cqm_rssi_hyst = rssi_hyst;
2489 sdata->u.mgd.last_cqm_event_signal = 0;
2490
2491 /* tell the driver upon association, unless already associated */
2492 if (sdata->u.mgd.associated &&
2493 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2494 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2495
2496 return 0;
2497 }
2498
2499 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2500 struct net_device *dev,
2501 const u8 *addr,
2502 const struct cfg80211_bitrate_mask *mask)
2503 {
2504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2505 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2506 int i, ret;
2507
2508 if (!ieee80211_sdata_running(sdata))
2509 return -ENETDOWN;
2510
2511 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2512 ret = drv_set_bitrate_mask(local, sdata, mask);
2513 if (ret)
2514 return ret;
2515 }
2516
2517 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2518 struct ieee80211_supported_band *sband = wiphy->bands[i];
2519 int j;
2520
2521 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2522 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2523 sizeof(mask->control[i].ht_mcs));
2524 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2525 mask->control[i].vht_mcs,
2526 sizeof(mask->control[i].vht_mcs));
2527
2528 sdata->rc_has_mcs_mask[i] = false;
2529 sdata->rc_has_vht_mcs_mask[i] = false;
2530 if (!sband)
2531 continue;
2532
2533 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2534 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2535 sdata->rc_has_mcs_mask[i] = true;
2536 break;
2537 }
2538 }
2539
2540 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2541 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2542 sdata->rc_has_vht_mcs_mask[i] = true;
2543 break;
2544 }
2545 }
2546 }
2547
2548 return 0;
2549 }
2550
2551 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2552 struct ieee80211_roc_work *new_roc,
2553 struct ieee80211_roc_work *cur_roc)
2554 {
2555 unsigned long now = jiffies;
2556 unsigned long remaining = cur_roc->hw_start_time +
2557 msecs_to_jiffies(cur_roc->duration) -
2558 now;
2559
2560 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2561 return false;
2562
2563 /* if it doesn't fit entirely, schedule a new one */
2564 if (new_roc->duration > jiffies_to_msecs(remaining))
2565 return false;
2566
2567 ieee80211_handle_roc_started(new_roc);
2568
2569 /* add to dependents so we send the expired event properly */
2570 list_add_tail(&new_roc->list, &cur_roc->dependents);
2571 return true;
2572 }
2573
2574 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2575 {
2576 lockdep_assert_held(&local->mtx);
2577
2578 local->roc_cookie_counter++;
2579
2580 /* wow, you wrapped 64 bits ... more likely a bug */
2581 if (WARN_ON(local->roc_cookie_counter == 0))
2582 local->roc_cookie_counter++;
2583
2584 return local->roc_cookie_counter;
2585 }
2586
2587 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2588 struct ieee80211_sub_if_data *sdata,
2589 struct ieee80211_channel *channel,
2590 unsigned int duration, u64 *cookie,
2591 struct sk_buff *txskb,
2592 enum ieee80211_roc_type type)
2593 {
2594 struct ieee80211_roc_work *roc, *tmp;
2595 bool queued = false;
2596 int ret;
2597
2598 lockdep_assert_held(&local->mtx);
2599
2600 if (local->use_chanctx && !local->ops->remain_on_channel)
2601 return -EOPNOTSUPP;
2602
2603 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2604 if (!roc)
2605 return -ENOMEM;
2606
2607 /*
2608 * If the duration is zero, then the driver
2609 * wouldn't actually do anything. Set it to
2610 * 10 for now.
2611 *
2612 * TODO: cancel the off-channel operation
2613 * when we get the SKB's TX status and
2614 * the wait time was zero before.
2615 */
2616 if (!duration)
2617 duration = 10;
2618
2619 roc->chan = channel;
2620 roc->duration = duration;
2621 roc->req_duration = duration;
2622 roc->frame = txskb;
2623 roc->type = type;
2624 roc->sdata = sdata;
2625 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2626 INIT_LIST_HEAD(&roc->dependents);
2627
2628 /*
2629 * cookie is either the roc cookie (for normal roc)
2630 * or the SKB (for mgmt TX)
2631 */
2632 if (!txskb) {
2633 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2634 *cookie = roc->cookie;
2635 } else {
2636 roc->mgmt_tx_cookie = *cookie;
2637 }
2638
2639 /* if there's one pending or we're scanning, queue this one */
2640 if (!list_empty(&local->roc_list) ||
2641 local->scanning || ieee80211_is_radar_required(local))
2642 goto out_check_combine;
2643
2644 /* if not HW assist, just queue & schedule work */
2645 if (!local->ops->remain_on_channel) {
2646 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2647 goto out_queue;
2648 }
2649
2650 /* otherwise actually kick it off here (for error handling) */
2651
2652 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2653 if (ret) {
2654 kfree(roc);
2655 return ret;
2656 }
2657
2658 roc->started = true;
2659 goto out_queue;
2660
2661 out_check_combine:
2662 list_for_each_entry(tmp, &local->roc_list, list) {
2663 if (tmp->chan != channel || tmp->sdata != sdata)
2664 continue;
2665
2666 /*
2667 * Extend this ROC if possible:
2668 *
2669 * If it hasn't started yet, just increase the duration
2670 * and add the new one to the list of dependents.
2671 * If the type of the new ROC has higher priority, modify the
2672 * type of the previous one to match that of the new one.
2673 */
2674 if (!tmp->started) {
2675 list_add_tail(&roc->list, &tmp->dependents);
2676 tmp->duration = max(tmp->duration, roc->duration);
2677 tmp->type = max(tmp->type, roc->type);
2678 queued = true;
2679 break;
2680 }
2681
2682 /* If it has already started, it's more difficult ... */
2683 if (local->ops->remain_on_channel) {
2684 /*
2685 * In the offloaded ROC case, if it hasn't begun, add
2686 * this new one to the dependent list to be handled
2687 * when the master one begins. If it has begun,
2688 * check if it fits entirely within the existing one,
2689 * in which case it will just be dependent as well.
2690 * Otherwise, schedule it by itself.
2691 */
2692 if (!tmp->hw_begun) {
2693 list_add_tail(&roc->list, &tmp->dependents);
2694 queued = true;
2695 break;
2696 }
2697
2698 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2699 queued = true;
2700 } else if (del_timer_sync(&tmp->work.timer)) {
2701 unsigned long new_end;
2702
2703 /*
2704 * In the software ROC case, cancel the timer, if
2705 * that fails then the finish work is already
2706 * queued/pending and thus we queue the new ROC
2707 * normally, if that succeeds then we can extend
2708 * the timer duration and TX the frame (if any.)
2709 */
2710
2711 list_add_tail(&roc->list, &tmp->dependents);
2712 queued = true;
2713
2714 new_end = jiffies + msecs_to_jiffies(roc->duration);
2715
2716 /* ok, it was started & we canceled timer */
2717 if (time_after(new_end, tmp->work.timer.expires))
2718 mod_timer(&tmp->work.timer, new_end);
2719 else
2720 add_timer(&tmp->work.timer);
2721
2722 ieee80211_handle_roc_started(roc);
2723 }
2724 break;
2725 }
2726
2727 out_queue:
2728 if (!queued)
2729 list_add_tail(&roc->list, &local->roc_list);
2730
2731 return 0;
2732 }
2733
2734 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2735 struct wireless_dev *wdev,
2736 struct ieee80211_channel *chan,
2737 unsigned int duration,
2738 u64 *cookie)
2739 {
2740 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2741 struct ieee80211_local *local = sdata->local;
2742 int ret;
2743
2744 mutex_lock(&local->mtx);
2745 ret = ieee80211_start_roc_work(local, sdata, chan,
2746 duration, cookie, NULL,
2747 IEEE80211_ROC_TYPE_NORMAL);
2748 mutex_unlock(&local->mtx);
2749
2750 return ret;
2751 }
2752
2753 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2754 u64 cookie, bool mgmt_tx)
2755 {
2756 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2757 int ret;
2758
2759 mutex_lock(&local->mtx);
2760 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2761 struct ieee80211_roc_work *dep, *tmp2;
2762
2763 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2764 if (!mgmt_tx && dep->cookie != cookie)
2765 continue;
2766 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2767 continue;
2768 /* found dependent item -- just remove it */
2769 list_del(&dep->list);
2770 mutex_unlock(&local->mtx);
2771
2772 ieee80211_roc_notify_destroy(dep, true);
2773 return 0;
2774 }
2775
2776 if (!mgmt_tx && roc->cookie != cookie)
2777 continue;
2778 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2779 continue;
2780
2781 found = roc;
2782 break;
2783 }
2784
2785 if (!found) {
2786 mutex_unlock(&local->mtx);
2787 return -ENOENT;
2788 }
2789
2790 /*
2791 * We found the item to cancel, so do that. Note that it
2792 * may have dependents, which we also cancel (and send
2793 * the expired signal for.) Not doing so would be quite
2794 * tricky here, but we may need to fix it later.
2795 */
2796
2797 if (local->ops->remain_on_channel) {
2798 if (found->started) {
2799 ret = drv_cancel_remain_on_channel(local);
2800 if (WARN_ON_ONCE(ret)) {
2801 mutex_unlock(&local->mtx);
2802 return ret;
2803 }
2804 }
2805
2806 list_del(&found->list);
2807
2808 if (found->started)
2809 ieee80211_start_next_roc(local);
2810 mutex_unlock(&local->mtx);
2811
2812 ieee80211_roc_notify_destroy(found, true);
2813 } else {
2814 /* work may be pending so use it all the time */
2815 found->abort = true;
2816 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2817
2818 mutex_unlock(&local->mtx);
2819
2820 /* work will clean up etc */
2821 flush_delayed_work(&found->work);
2822 WARN_ON(!found->to_be_freed);
2823 kfree(found);
2824 }
2825
2826 return 0;
2827 }
2828
2829 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2830 struct wireless_dev *wdev,
2831 u64 cookie)
2832 {
2833 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2834 struct ieee80211_local *local = sdata->local;
2835
2836 return ieee80211_cancel_roc(local, cookie, false);
2837 }
2838
2839 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2840 struct net_device *dev,
2841 struct cfg80211_chan_def *chandef,
2842 u32 cac_time_ms)
2843 {
2844 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2845 struct ieee80211_local *local = sdata->local;
2846 int err;
2847
2848 mutex_lock(&local->mtx);
2849 if (!list_empty(&local->roc_list) || local->scanning) {
2850 err = -EBUSY;
2851 goto out_unlock;
2852 }
2853
2854 /* whatever, but channel contexts should not complain about that one */
2855 sdata->smps_mode = IEEE80211_SMPS_OFF;
2856 sdata->needed_rx_chains = local->rx_chains;
2857
2858 err = ieee80211_vif_use_channel(sdata, chandef,
2859 IEEE80211_CHANCTX_SHARED);
2860 if (err)
2861 goto out_unlock;
2862
2863 ieee80211_queue_delayed_work(&sdata->local->hw,
2864 &sdata->dfs_cac_timer_work,
2865 msecs_to_jiffies(cac_time_ms));
2866
2867 out_unlock:
2868 mutex_unlock(&local->mtx);
2869 return err;
2870 }
2871
2872 static struct cfg80211_beacon_data *
2873 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2874 {
2875 struct cfg80211_beacon_data *new_beacon;
2876 u8 *pos;
2877 int len;
2878
2879 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2880 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2881 beacon->probe_resp_len;
2882
2883 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2884 if (!new_beacon)
2885 return NULL;
2886
2887 pos = (u8 *)(new_beacon + 1);
2888 if (beacon->head_len) {
2889 new_beacon->head_len = beacon->head_len;
2890 new_beacon->head = pos;
2891 memcpy(pos, beacon->head, beacon->head_len);
2892 pos += beacon->head_len;
2893 }
2894 if (beacon->tail_len) {
2895 new_beacon->tail_len = beacon->tail_len;
2896 new_beacon->tail = pos;
2897 memcpy(pos, beacon->tail, beacon->tail_len);
2898 pos += beacon->tail_len;
2899 }
2900 if (beacon->beacon_ies_len) {
2901 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2902 new_beacon->beacon_ies = pos;
2903 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2904 pos += beacon->beacon_ies_len;
2905 }
2906 if (beacon->proberesp_ies_len) {
2907 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2908 new_beacon->proberesp_ies = pos;
2909 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2910 pos += beacon->proberesp_ies_len;
2911 }
2912 if (beacon->assocresp_ies_len) {
2913 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2914 new_beacon->assocresp_ies = pos;
2915 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2916 pos += beacon->assocresp_ies_len;
2917 }
2918 if (beacon->probe_resp_len) {
2919 new_beacon->probe_resp_len = beacon->probe_resp_len;
2920 beacon->probe_resp = pos;
2921 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2922 pos += beacon->probe_resp_len;
2923 }
2924
2925 return new_beacon;
2926 }
2927
2928 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2929 {
2930 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2931
2932 ieee80211_queue_work(&sdata->local->hw,
2933 &sdata->csa_finalize_work);
2934 }
2935 EXPORT_SYMBOL(ieee80211_csa_finish);
2936
2937 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2938 u32 *changed)
2939 {
2940 int err;
2941
2942 switch (sdata->vif.type) {
2943 case NL80211_IFTYPE_AP:
2944 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2945 NULL);
2946 kfree(sdata->u.ap.next_beacon);
2947 sdata->u.ap.next_beacon = NULL;
2948
2949 if (err < 0)
2950 return err;
2951 *changed |= err;
2952 break;
2953 case NL80211_IFTYPE_ADHOC:
2954 err = ieee80211_ibss_finish_csa(sdata);
2955 if (err < 0)
2956 return err;
2957 *changed |= err;
2958 break;
2959 #ifdef CONFIG_MAC80211_MESH
2960 case NL80211_IFTYPE_MESH_POINT:
2961 err = ieee80211_mesh_finish_csa(sdata);
2962 if (err < 0)
2963 return err;
2964 *changed |= err;
2965 break;
2966 #endif
2967 default:
2968 WARN_ON(1);
2969 return -EINVAL;
2970 }
2971
2972 return 0;
2973 }
2974
2975 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2976 {
2977 struct ieee80211_local *local = sdata->local;
2978 u32 changed = 0;
2979 int err;
2980
2981 sdata_assert_lock(sdata);
2982 lockdep_assert_held(&local->mtx);
2983 lockdep_assert_held(&local->chanctx_mtx);
2984
2985 /*
2986 * using reservation isn't immediate as it may be deferred until later
2987 * with multi-vif. once reservation is complete it will re-schedule the
2988 * work with no reserved_chanctx so verify chandef to check if it
2989 * completed successfully
2990 */
2991
2992 if (sdata->reserved_chanctx) {
2993 /*
2994 * with multi-vif csa driver may call ieee80211_csa_finish()
2995 * many times while waiting for other interfaces to use their
2996 * reservations
2997 */
2998 if (sdata->reserved_ready)
2999 return 0;
3000
3001 return ieee80211_vif_use_reserved_context(sdata);
3002 }
3003
3004 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3005 &sdata->csa_chandef))
3006 return -EINVAL;
3007
3008 sdata->vif.csa_active = false;
3009
3010 err = ieee80211_set_after_csa_beacon(sdata, &changed);
3011 if (err)
3012 return err;
3013
3014 ieee80211_bss_info_change_notify(sdata, changed);
3015
3016 if (sdata->csa_block_tx) {
3017 ieee80211_wake_vif_queues(local, sdata,
3018 IEEE80211_QUEUE_STOP_REASON_CSA);
3019 sdata->csa_block_tx = false;
3020 }
3021
3022 err = drv_post_channel_switch(sdata);
3023 if (err)
3024 return err;
3025
3026 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3027
3028 return 0;
3029 }
3030
3031 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3032 {
3033 if (__ieee80211_csa_finalize(sdata)) {
3034 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3035 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3036 GFP_KERNEL);
3037 }
3038 }
3039
3040 void ieee80211_csa_finalize_work(struct work_struct *work)
3041 {
3042 struct ieee80211_sub_if_data *sdata =
3043 container_of(work, struct ieee80211_sub_if_data,
3044 csa_finalize_work);
3045 struct ieee80211_local *local = sdata->local;
3046
3047 sdata_lock(sdata);
3048 mutex_lock(&local->mtx);
3049 mutex_lock(&local->chanctx_mtx);
3050
3051 /* AP might have been stopped while waiting for the lock. */
3052 if (!sdata->vif.csa_active)
3053 goto unlock;
3054
3055 if (!ieee80211_sdata_running(sdata))
3056 goto unlock;
3057
3058 ieee80211_csa_finalize(sdata);
3059
3060 unlock:
3061 mutex_unlock(&local->chanctx_mtx);
3062 mutex_unlock(&local->mtx);
3063 sdata_unlock(sdata);
3064 }
3065
3066 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3067 struct cfg80211_csa_settings *params,
3068 u32 *changed)
3069 {
3070 struct ieee80211_csa_settings csa = {};
3071 int err;
3072
3073 switch (sdata->vif.type) {
3074 case NL80211_IFTYPE_AP:
3075 sdata->u.ap.next_beacon =
3076 cfg80211_beacon_dup(&params->beacon_after);
3077 if (!sdata->u.ap.next_beacon)
3078 return -ENOMEM;
3079
3080 /*
3081 * With a count of 0, we don't have to wait for any
3082 * TBTT before switching, so complete the CSA
3083 * immediately. In theory, with a count == 1 we
3084 * should delay the switch until just before the next
3085 * TBTT, but that would complicate things so we switch
3086 * immediately too. If we would delay the switch
3087 * until the next TBTT, we would have to set the probe
3088 * response here.
3089 *
3090 * TODO: A channel switch with count <= 1 without
3091 * sending a CSA action frame is kind of useless,
3092 * because the clients won't know we're changing
3093 * channels. The action frame must be implemented
3094 * either here or in the userspace.
3095 */
3096 if (params->count <= 1)
3097 break;
3098
3099 if ((params->n_counter_offsets_beacon >
3100 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3101 (params->n_counter_offsets_presp >
3102 IEEE80211_MAX_CSA_COUNTERS_NUM))
3103 return -EINVAL;
3104
3105 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3106 csa.counter_offsets_presp = params->counter_offsets_presp;
3107 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3108 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3109 csa.count = params->count;
3110
3111 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3112 if (err < 0) {
3113 kfree(sdata->u.ap.next_beacon);
3114 return err;
3115 }
3116 *changed |= err;
3117
3118 break;
3119 case NL80211_IFTYPE_ADHOC:
3120 if (!sdata->vif.bss_conf.ibss_joined)
3121 return -EINVAL;
3122
3123 if (params->chandef.width != sdata->u.ibss.chandef.width)
3124 return -EINVAL;
3125
3126 switch (params->chandef.width) {
3127 case NL80211_CHAN_WIDTH_40:
3128 if (cfg80211_get_chandef_type(&params->chandef) !=
3129 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3130 return -EINVAL;
3131 case NL80211_CHAN_WIDTH_5:
3132 case NL80211_CHAN_WIDTH_10:
3133 case NL80211_CHAN_WIDTH_20_NOHT:
3134 case NL80211_CHAN_WIDTH_20:
3135 break;
3136 default:
3137 return -EINVAL;
3138 }
3139
3140 /* changes into another band are not supported */
3141 if (sdata->u.ibss.chandef.chan->band !=
3142 params->chandef.chan->band)
3143 return -EINVAL;
3144
3145 /* see comments in the NL80211_IFTYPE_AP block */
3146 if (params->count > 1) {
3147 err = ieee80211_ibss_csa_beacon(sdata, params);
3148 if (err < 0)
3149 return err;
3150 *changed |= err;
3151 }
3152
3153 ieee80211_send_action_csa(sdata, params);
3154
3155 break;
3156 #ifdef CONFIG_MAC80211_MESH
3157 case NL80211_IFTYPE_MESH_POINT: {
3158 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3159
3160 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3161 return -EINVAL;
3162
3163 /* changes into another band are not supported */
3164 if (sdata->vif.bss_conf.chandef.chan->band !=
3165 params->chandef.chan->band)
3166 return -EINVAL;
3167
3168 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3169 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3170 if (!ifmsh->pre_value)
3171 ifmsh->pre_value = 1;
3172 else
3173 ifmsh->pre_value++;
3174 }
3175
3176 /* see comments in the NL80211_IFTYPE_AP block */
3177 if (params->count > 1) {
3178 err = ieee80211_mesh_csa_beacon(sdata, params);
3179 if (err < 0) {
3180 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3181 return err;
3182 }
3183 *changed |= err;
3184 }
3185
3186 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3187 ieee80211_send_action_csa(sdata, params);
3188
3189 break;
3190 }
3191 #endif
3192 default:
3193 return -EOPNOTSUPP;
3194 }
3195
3196 return 0;
3197 }
3198
3199 static int
3200 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3201 struct cfg80211_csa_settings *params)
3202 {
3203 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3204 struct ieee80211_local *local = sdata->local;
3205 struct ieee80211_channel_switch ch_switch;
3206 struct ieee80211_chanctx_conf *conf;
3207 struct ieee80211_chanctx *chanctx;
3208 u32 changed = 0;
3209 int err;
3210
3211 sdata_assert_lock(sdata);
3212 lockdep_assert_held(&local->mtx);
3213
3214 if (!list_empty(&local->roc_list) || local->scanning)
3215 return -EBUSY;
3216
3217 if (sdata->wdev.cac_started)
3218 return -EBUSY;
3219
3220 if (cfg80211_chandef_identical(&params->chandef,
3221 &sdata->vif.bss_conf.chandef))
3222 return -EINVAL;
3223
3224 /* don't allow another channel switch if one is already active. */
3225 if (sdata->vif.csa_active)
3226 return -EBUSY;
3227
3228 mutex_lock(&local->chanctx_mtx);
3229 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3230 lockdep_is_held(&local->chanctx_mtx));
3231 if (!conf) {
3232 err = -EBUSY;
3233 goto out;
3234 }
3235
3236 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3237 if (!chanctx) {
3238 err = -EBUSY;
3239 goto out;
3240 }
3241
3242 ch_switch.timestamp = 0;
3243 ch_switch.device_timestamp = 0;
3244 ch_switch.block_tx = params->block_tx;
3245 ch_switch.chandef = params->chandef;
3246 ch_switch.count = params->count;
3247
3248 err = drv_pre_channel_switch(sdata, &ch_switch);
3249 if (err)
3250 goto out;
3251
3252 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3253 chanctx->mode,
3254 params->radar_required);
3255 if (err)
3256 goto out;
3257
3258 /* if reservation is invalid then this will fail */
3259 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3260 if (err) {
3261 ieee80211_vif_unreserve_chanctx(sdata);
3262 goto out;
3263 }
3264
3265 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3266 if (err) {
3267 ieee80211_vif_unreserve_chanctx(sdata);
3268 goto out;
3269 }
3270
3271 sdata->csa_chandef = params->chandef;
3272 sdata->csa_block_tx = params->block_tx;
3273 sdata->vif.csa_active = true;
3274
3275 if (sdata->csa_block_tx)
3276 ieee80211_stop_vif_queues(local, sdata,
3277 IEEE80211_QUEUE_STOP_REASON_CSA);
3278
3279 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3280 params->count);
3281
3282 if (changed) {
3283 ieee80211_bss_info_change_notify(sdata, changed);
3284 drv_channel_switch_beacon(sdata, &params->chandef);
3285 } else {
3286 /* if the beacon didn't change, we can finalize immediately */
3287 ieee80211_csa_finalize(sdata);
3288 }
3289
3290 out:
3291 mutex_unlock(&local->chanctx_mtx);
3292 return err;
3293 }
3294
3295 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3296 struct cfg80211_csa_settings *params)
3297 {
3298 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3299 struct ieee80211_local *local = sdata->local;
3300 int err;
3301
3302 mutex_lock(&local->mtx);
3303 err = __ieee80211_channel_switch(wiphy, dev, params);
3304 mutex_unlock(&local->mtx);
3305
3306 return err;
3307 }
3308
3309 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3310 struct sk_buff *skb, u64 *cookie,
3311 gfp_t gfp)
3312 {
3313 unsigned long spin_flags;
3314 struct sk_buff *ack_skb;
3315 int id;
3316
3317 ack_skb = skb_copy(skb, gfp);
3318 if (!ack_skb)
3319 return ERR_PTR(-ENOMEM);
3320
3321 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3322 id = idr_alloc(&local->ack_status_frames, ack_skb,
3323 1, 0x10000, GFP_ATOMIC);
3324 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3325
3326 if (id < 0) {
3327 kfree_skb(ack_skb);
3328 return ERR_PTR(-ENOMEM);
3329 }
3330
3331 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3332
3333 *cookie = ieee80211_mgmt_tx_cookie(local);
3334 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3335
3336 return ack_skb;
3337 }
3338
3339 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3340 struct cfg80211_mgmt_tx_params *params,
3341 u64 *cookie)
3342 {
3343 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3344 struct ieee80211_local *local = sdata->local;
3345 struct sk_buff *skb, *ack_skb;
3346 struct sta_info *sta;
3347 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3348 bool need_offchan = false;
3349 u32 flags;
3350 int ret;
3351 u8 *data;
3352
3353 if (params->dont_wait_for_ack)
3354 flags = IEEE80211_TX_CTL_NO_ACK;
3355 else
3356 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3357 IEEE80211_TX_CTL_REQ_TX_STATUS;
3358
3359 if (params->no_cck)
3360 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3361
3362 switch (sdata->vif.type) {
3363 case NL80211_IFTYPE_ADHOC:
3364 if (!sdata->vif.bss_conf.ibss_joined)
3365 need_offchan = true;
3366 /* fall through */
3367 #ifdef CONFIG_MAC80211_MESH
3368 case NL80211_IFTYPE_MESH_POINT:
3369 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3370 !sdata->u.mesh.mesh_id_len)
3371 need_offchan = true;
3372 /* fall through */
3373 #endif
3374 case NL80211_IFTYPE_AP:
3375 case NL80211_IFTYPE_AP_VLAN:
3376 case NL80211_IFTYPE_P2P_GO:
3377 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3378 !ieee80211_vif_is_mesh(&sdata->vif) &&
3379 !rcu_access_pointer(sdata->bss->beacon))
3380 need_offchan = true;
3381 if (!ieee80211_is_action(mgmt->frame_control) ||
3382 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3383 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3384 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3385 break;
3386 rcu_read_lock();
3387 sta = sta_info_get(sdata, mgmt->da);
3388 rcu_read_unlock();
3389 if (!sta)
3390 return -ENOLINK;
3391 break;
3392 case NL80211_IFTYPE_STATION:
3393 case NL80211_IFTYPE_P2P_CLIENT:
3394 sdata_lock(sdata);
3395 if (!sdata->u.mgd.associated ||
3396 (params->offchan && params->wait &&
3397 local->ops->remain_on_channel &&
3398 memcmp(sdata->u.mgd.associated->bssid,
3399 mgmt->bssid, ETH_ALEN)))
3400 need_offchan = true;
3401 sdata_unlock(sdata);
3402 break;
3403 case NL80211_IFTYPE_P2P_DEVICE:
3404 need_offchan = true;
3405 break;
3406 default:
3407 return -EOPNOTSUPP;
3408 }
3409
3410 /* configurations requiring offchan cannot work if no channel has been
3411 * specified
3412 */
3413 if (need_offchan && !params->chan)
3414 return -EINVAL;
3415
3416 mutex_lock(&local->mtx);
3417
3418 /* Check if the operating channel is the requested channel */
3419 if (!need_offchan) {
3420 struct ieee80211_chanctx_conf *chanctx_conf;
3421
3422 rcu_read_lock();
3423 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3424
3425 if (chanctx_conf) {
3426 need_offchan = params->chan &&
3427 (params->chan !=
3428 chanctx_conf->def.chan);
3429 } else if (!params->chan) {
3430 ret = -EINVAL;
3431 rcu_read_unlock();
3432 goto out_unlock;
3433 } else {
3434 need_offchan = true;
3435 }
3436 rcu_read_unlock();
3437 }
3438
3439 if (need_offchan && !params->offchan) {
3440 ret = -EBUSY;
3441 goto out_unlock;
3442 }
3443
3444 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3445 if (!skb) {
3446 ret = -ENOMEM;
3447 goto out_unlock;
3448 }
3449 skb_reserve(skb, local->hw.extra_tx_headroom);
3450
3451 data = skb_put(skb, params->len);
3452 memcpy(data, params->buf, params->len);
3453
3454 /* Update CSA counters */
3455 if (sdata->vif.csa_active &&
3456 (sdata->vif.type == NL80211_IFTYPE_AP ||
3457 sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3458 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3459 params->n_csa_offsets) {
3460 int i;
3461 struct beacon_data *beacon = NULL;
3462
3463 rcu_read_lock();
3464
3465 if (sdata->vif.type == NL80211_IFTYPE_AP)
3466 beacon = rcu_dereference(sdata->u.ap.beacon);
3467 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3468 beacon = rcu_dereference(sdata->u.ibss.presp);
3469 else if (ieee80211_vif_is_mesh(&sdata->vif))
3470 beacon = rcu_dereference(sdata->u.mesh.beacon);
3471
3472 if (beacon)
3473 for (i = 0; i < params->n_csa_offsets; i++)
3474 data[params->csa_offsets[i]] =
3475 beacon->csa_current_counter;
3476
3477 rcu_read_unlock();
3478 }
3479
3480 IEEE80211_SKB_CB(skb)->flags = flags;
3481
3482 skb->dev = sdata->dev;
3483
3484 if (!params->dont_wait_for_ack) {
3485 /* make a copy to preserve the frame contents
3486 * in case of encryption.
3487 */
3488 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3489 GFP_KERNEL);
3490 if (IS_ERR(ack_skb)) {
3491 ret = PTR_ERR(ack_skb);
3492 kfree_skb(skb);
3493 goto out_unlock;
3494 }
3495 } else {
3496 /* for cookie below */
3497 ack_skb = skb;
3498 }
3499
3500 if (!need_offchan) {
3501 ieee80211_tx_skb(sdata, skb);
3502 ret = 0;
3503 goto out_unlock;
3504 }
3505
3506 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3507 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3508 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3509 IEEE80211_SKB_CB(skb)->hw_queue =
3510 local->hw.offchannel_tx_hw_queue;
3511
3512 /* This will handle all kinds of coalescing and immediate TX */
3513 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3514 params->wait, cookie, skb,
3515 IEEE80211_ROC_TYPE_MGMT_TX);
3516 if (ret)
3517 kfree_skb(skb);
3518 out_unlock:
3519 mutex_unlock(&local->mtx);
3520 return ret;
3521 }
3522
3523 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3524 struct wireless_dev *wdev,
3525 u64 cookie)
3526 {
3527 struct ieee80211_local *local = wiphy_priv(wiphy);
3528
3529 return ieee80211_cancel_roc(local, cookie, true);
3530 }
3531
3532 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3533 struct wireless_dev *wdev,
3534 u16 frame_type, bool reg)
3535 {
3536 struct ieee80211_local *local = wiphy_priv(wiphy);
3537 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3538
3539 switch (frame_type) {
3540 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3541 if (reg) {
3542 local->probe_req_reg++;
3543 sdata->vif.probe_req_reg++;
3544 } else {
3545 if (local->probe_req_reg)
3546 local->probe_req_reg--;
3547
3548 if (sdata->vif.probe_req_reg)
3549 sdata->vif.probe_req_reg--;
3550 }
3551
3552 if (!local->open_count)
3553 break;
3554
3555 if (sdata->vif.probe_req_reg == 1)
3556 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3557 FIF_PROBE_REQ);
3558 else if (sdata->vif.probe_req_reg == 0)
3559 drv_config_iface_filter(local, sdata, 0,
3560 FIF_PROBE_REQ);
3561
3562 ieee80211_configure_filter(local);
3563 break;
3564 default:
3565 break;
3566 }
3567 }
3568
3569 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3570 {
3571 struct ieee80211_local *local = wiphy_priv(wiphy);
3572
3573 if (local->started)
3574 return -EOPNOTSUPP;
3575
3576 return drv_set_antenna(local, tx_ant, rx_ant);
3577 }
3578
3579 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3580 {
3581 struct ieee80211_local *local = wiphy_priv(wiphy);
3582
3583 return drv_get_antenna(local, tx_ant, rx_ant);
3584 }
3585
3586 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3587 struct net_device *dev,
3588 struct cfg80211_gtk_rekey_data *data)
3589 {
3590 struct ieee80211_local *local = wiphy_priv(wiphy);
3591 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3592
3593 if (!local->ops->set_rekey_data)
3594 return -EOPNOTSUPP;
3595
3596 drv_set_rekey_data(local, sdata, data);
3597
3598 return 0;
3599 }
3600
3601 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3602 const u8 *peer, u64 *cookie)
3603 {
3604 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3605 struct ieee80211_local *local = sdata->local;
3606 struct ieee80211_qos_hdr *nullfunc;
3607 struct sk_buff *skb, *ack_skb;
3608 int size = sizeof(*nullfunc);
3609 __le16 fc;
3610 bool qos;
3611 struct ieee80211_tx_info *info;
3612 struct sta_info *sta;
3613 struct ieee80211_chanctx_conf *chanctx_conf;
3614 enum ieee80211_band band;
3615 int ret;
3616
3617 /* the lock is needed to assign the cookie later */
3618 mutex_lock(&local->mtx);
3619
3620 rcu_read_lock();
3621 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3622 if (WARN_ON(!chanctx_conf)) {
3623 ret = -EINVAL;
3624 goto unlock;
3625 }
3626 band = chanctx_conf->def.chan->band;
3627 sta = sta_info_get_bss(sdata, peer);
3628 if (sta) {
3629 qos = sta->sta.wme;
3630 } else {
3631 ret = -ENOLINK;
3632 goto unlock;
3633 }
3634
3635 if (qos) {
3636 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3637 IEEE80211_STYPE_QOS_NULLFUNC |
3638 IEEE80211_FCTL_FROMDS);
3639 } else {
3640 size -= 2;
3641 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3642 IEEE80211_STYPE_NULLFUNC |
3643 IEEE80211_FCTL_FROMDS);
3644 }
3645
3646 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3647 if (!skb) {
3648 ret = -ENOMEM;
3649 goto unlock;
3650 }
3651
3652 skb->dev = dev;
3653
3654 skb_reserve(skb, local->hw.extra_tx_headroom);
3655
3656 nullfunc = (void *) skb_put(skb, size);
3657 nullfunc->frame_control = fc;
3658 nullfunc->duration_id = 0;
3659 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3660 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3661 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3662 nullfunc->seq_ctrl = 0;
3663
3664 info = IEEE80211_SKB_CB(skb);
3665
3666 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3667 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3668 info->band = band;
3669
3670 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3671 skb->priority = 7;
3672 if (qos)
3673 nullfunc->qos_ctrl = cpu_to_le16(7);
3674
3675 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3676 if (IS_ERR(ack_skb)) {
3677 kfree_skb(skb);
3678 ret = PTR_ERR(ack_skb);
3679 goto unlock;
3680 }
3681
3682 local_bh_disable();
3683 ieee80211_xmit(sdata, sta, skb);
3684 local_bh_enable();
3685
3686 ret = 0;
3687 unlock:
3688 rcu_read_unlock();
3689 mutex_unlock(&local->mtx);
3690
3691 return ret;
3692 }
3693
3694 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3695 struct wireless_dev *wdev,
3696 struct cfg80211_chan_def *chandef)
3697 {
3698 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3699 struct ieee80211_local *local = wiphy_priv(wiphy);
3700 struct ieee80211_chanctx_conf *chanctx_conf;
3701 int ret = -ENODATA;
3702
3703 rcu_read_lock();
3704 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3705 if (chanctx_conf) {
3706 *chandef = sdata->vif.bss_conf.chandef;
3707 ret = 0;
3708 } else if (local->open_count > 0 &&
3709 local->open_count == local->monitors &&
3710 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3711 if (local->use_chanctx)
3712 *chandef = local->monitor_chandef;
3713 else
3714 *chandef = local->_oper_chandef;
3715 ret = 0;
3716 }
3717 rcu_read_unlock();
3718
3719 return ret;
3720 }
3721
3722 #ifdef CONFIG_PM
3723 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3724 {
3725 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3726 }
3727 #endif
3728
3729 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3730 struct net_device *dev,
3731 struct cfg80211_qos_map *qos_map)
3732 {
3733 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3734 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3735
3736 if (qos_map) {
3737 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3738 if (!new_qos_map)
3739 return -ENOMEM;
3740 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3741 } else {
3742 /* A NULL qos_map was passed to disable QoS mapping */
3743 new_qos_map = NULL;
3744 }
3745
3746 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3747 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3748 if (old_qos_map)
3749 kfree_rcu(old_qos_map, rcu_head);
3750
3751 return 0;
3752 }
3753
3754 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3755 struct net_device *dev,
3756 struct cfg80211_chan_def *chandef)
3757 {
3758 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3759 int ret;
3760 u32 changed = 0;
3761
3762 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3763 if (ret == 0)
3764 ieee80211_bss_info_change_notify(sdata, changed);
3765
3766 return ret;
3767 }
3768
3769 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3770 u8 tsid, const u8 *peer, u8 up,
3771 u16 admitted_time)
3772 {
3773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3774 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3775 int ac = ieee802_1d_to_ac[up];
3776
3777 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3778 return -EOPNOTSUPP;
3779
3780 if (!(sdata->wmm_acm & BIT(up)))
3781 return -EINVAL;
3782
3783 if (ifmgd->tx_tspec[ac].admitted_time)
3784 return -EBUSY;
3785
3786 if (admitted_time) {
3787 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3788 ifmgd->tx_tspec[ac].tsid = tsid;
3789 ifmgd->tx_tspec[ac].up = up;
3790 }
3791
3792 return 0;
3793 }
3794
3795 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3796 u8 tsid, const u8 *peer)
3797 {
3798 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3799 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3800 struct ieee80211_local *local = wiphy_priv(wiphy);
3801 int ac;
3802
3803 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3804 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3805
3806 /* skip unused entries */
3807 if (!tx_tspec->admitted_time)
3808 continue;
3809
3810 if (tx_tspec->tsid != tsid)
3811 continue;
3812
3813 /* due to this new packets will be reassigned to non-ACM ACs */
3814 tx_tspec->up = -1;
3815
3816 /* Make sure that all packets have been sent to avoid to
3817 * restore the QoS params on packets that are still on the
3818 * queues.
3819 */
3820 synchronize_net();
3821 ieee80211_flush_queues(local, sdata, false);
3822
3823 /* restore the normal QoS parameters
3824 * (unconditionally to avoid races)
3825 */
3826 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3827 tx_tspec->downgraded = false;
3828 ieee80211_sta_handle_tspec_ac_params(sdata);
3829
3830 /* finally clear all the data */
3831 memset(tx_tspec, 0, sizeof(*tx_tspec));
3832
3833 return 0;
3834 }
3835
3836 return -ENOENT;
3837 }
3838
3839 const struct cfg80211_ops mac80211_config_ops = {
3840 .add_virtual_intf = ieee80211_add_iface,
3841 .del_virtual_intf = ieee80211_del_iface,
3842 .change_virtual_intf = ieee80211_change_iface,
3843 .start_p2p_device = ieee80211_start_p2p_device,
3844 .stop_p2p_device = ieee80211_stop_p2p_device,
3845 .add_key = ieee80211_add_key,
3846 .del_key = ieee80211_del_key,
3847 .get_key = ieee80211_get_key,
3848 .set_default_key = ieee80211_config_default_key,
3849 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3850 .start_ap = ieee80211_start_ap,
3851 .change_beacon = ieee80211_change_beacon,
3852 .stop_ap = ieee80211_stop_ap,
3853 .add_station = ieee80211_add_station,
3854 .del_station = ieee80211_del_station,
3855 .change_station = ieee80211_change_station,
3856 .get_station = ieee80211_get_station,
3857 .dump_station = ieee80211_dump_station,
3858 .dump_survey = ieee80211_dump_survey,
3859 #ifdef CONFIG_MAC80211_MESH
3860 .add_mpath = ieee80211_add_mpath,
3861 .del_mpath = ieee80211_del_mpath,
3862 .change_mpath = ieee80211_change_mpath,
3863 .get_mpath = ieee80211_get_mpath,
3864 .dump_mpath = ieee80211_dump_mpath,
3865 .get_mpp = ieee80211_get_mpp,
3866 .dump_mpp = ieee80211_dump_mpp,
3867 .update_mesh_config = ieee80211_update_mesh_config,
3868 .get_mesh_config = ieee80211_get_mesh_config,
3869 .join_mesh = ieee80211_join_mesh,
3870 .leave_mesh = ieee80211_leave_mesh,
3871 #endif
3872 .join_ocb = ieee80211_join_ocb,
3873 .leave_ocb = ieee80211_leave_ocb,
3874 .change_bss = ieee80211_change_bss,
3875 .set_txq_params = ieee80211_set_txq_params,
3876 .set_monitor_channel = ieee80211_set_monitor_channel,
3877 .suspend = ieee80211_suspend,
3878 .resume = ieee80211_resume,
3879 .scan = ieee80211_scan,
3880 .sched_scan_start = ieee80211_sched_scan_start,
3881 .sched_scan_stop = ieee80211_sched_scan_stop,
3882 .auth = ieee80211_auth,
3883 .assoc = ieee80211_assoc,
3884 .deauth = ieee80211_deauth,
3885 .disassoc = ieee80211_disassoc,
3886 .join_ibss = ieee80211_join_ibss,
3887 .leave_ibss = ieee80211_leave_ibss,
3888 .set_mcast_rate = ieee80211_set_mcast_rate,
3889 .set_wiphy_params = ieee80211_set_wiphy_params,
3890 .set_tx_power = ieee80211_set_tx_power,
3891 .get_tx_power = ieee80211_get_tx_power,
3892 .set_wds_peer = ieee80211_set_wds_peer,
3893 .rfkill_poll = ieee80211_rfkill_poll,
3894 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3895 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3896 .set_power_mgmt = ieee80211_set_power_mgmt,
3897 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3898 .remain_on_channel = ieee80211_remain_on_channel,
3899 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3900 .mgmt_tx = ieee80211_mgmt_tx,
3901 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3902 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3903 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3904 .set_antenna = ieee80211_set_antenna,
3905 .get_antenna = ieee80211_get_antenna,
3906 .set_rekey_data = ieee80211_set_rekey_data,
3907 .tdls_oper = ieee80211_tdls_oper,
3908 .tdls_mgmt = ieee80211_tdls_mgmt,
3909 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3910 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3911 .probe_client = ieee80211_probe_client,
3912 .set_noack_map = ieee80211_set_noack_map,
3913 #ifdef CONFIG_PM
3914 .set_wakeup = ieee80211_set_wakeup,
3915 #endif
3916 .get_channel = ieee80211_cfg_get_channel,
3917 .start_radar_detection = ieee80211_start_radar_detection,
3918 .channel_switch = ieee80211_channel_switch,
3919 .set_qos_map = ieee80211_set_qos_map,
3920 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3921 .add_tx_ts = ieee80211_add_tx_ts,
3922 .del_tx_ts = ieee80211_del_tx_ts,
3923 };
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