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Merge tag 'please-pull-misc-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[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_TDLS_PEER))
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 int sta_apply_parameters(struct ieee80211_local *local,
1023 struct sta_info *sta,
1024 struct station_parameters *params)
1025 {
1026 int ret = 0;
1027 struct ieee80211_supported_band *sband;
1028 struct ieee80211_sub_if_data *sdata = sta->sdata;
1029 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1030 u32 mask, set;
1031
1032 sband = local->hw.wiphy->bands[band];
1033
1034 mask = params->sta_flags_mask;
1035 set = params->sta_flags_set;
1036
1037 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1038 /*
1039 * In mesh mode, ASSOCIATED isn't part of the nl80211
1040 * API but must follow AUTHENTICATED for driver state.
1041 */
1042 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1043 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1044 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1045 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1046 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1047 /*
1048 * TDLS -- everything follows authorized, but
1049 * only becoming authorized is possible, not
1050 * going back
1051 */
1052 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1053 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1054 BIT(NL80211_STA_FLAG_ASSOCIATED);
1055 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1056 BIT(NL80211_STA_FLAG_ASSOCIATED);
1057 }
1058 }
1059
1060 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1061 local->hw.queues >= IEEE80211_NUM_ACS)
1062 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1063
1064 /* auth flags will be set later for TDLS stations */
1065 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066 ret = sta_apply_auth_flags(local, sta, mask, set);
1067 if (ret)
1068 return ret;
1069 }
1070
1071 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1072 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1073 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1074 else
1075 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1076 }
1077
1078 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1079 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1080 if (set & BIT(NL80211_STA_FLAG_MFP))
1081 set_sta_flag(sta, WLAN_STA_MFP);
1082 else
1083 clear_sta_flag(sta, WLAN_STA_MFP);
1084 }
1085
1086 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1087 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1088 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1089 else
1090 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1091 }
1092
1093 /* mark TDLS channel switch support, if the AP allows it */
1094 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1095 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1096 params->ext_capab_len >= 4 &&
1097 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1098 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1099
1100 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1101 sta->sta.uapsd_queues = params->uapsd_queues;
1102 sta->sta.max_sp = params->max_sp;
1103 }
1104
1105 /*
1106 * cfg80211 validates this (1-2007) and allows setting the AID
1107 * only when creating a new station entry
1108 */
1109 if (params->aid)
1110 sta->sta.aid = params->aid;
1111
1112 /*
1113 * Some of the following updates would be racy if called on an
1114 * existing station, via ieee80211_change_station(). However,
1115 * all such changes are rejected by cfg80211 except for updates
1116 * changing the supported rates on an existing but not yet used
1117 * TDLS peer.
1118 */
1119
1120 if (params->listen_interval >= 0)
1121 sta->listen_interval = params->listen_interval;
1122
1123 if (params->supported_rates) {
1124 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1125 sband, params->supported_rates,
1126 params->supported_rates_len,
1127 &sta->sta.supp_rates[band]);
1128 }
1129
1130 if (params->ht_capa)
1131 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1132 params->ht_capa, sta);
1133
1134 if (params->vht_capa)
1135 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1136 params->vht_capa, sta);
1137
1138 if (params->opmode_notif_used) {
1139 /* returned value is only needed for rc update, but the
1140 * rc isn't initialized here yet, so ignore it
1141 */
1142 __ieee80211_vht_handle_opmode(sdata, sta,
1143 params->opmode_notif,
1144 band, false);
1145 }
1146
1147 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1148 #ifdef CONFIG_MAC80211_MESH
1149 u32 changed = 0;
1150
1151 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1152 switch (params->plink_state) {
1153 case NL80211_PLINK_ESTAB:
1154 if (sta->plink_state != NL80211_PLINK_ESTAB)
1155 changed = mesh_plink_inc_estab_count(
1156 sdata);
1157 sta->plink_state = params->plink_state;
1158
1159 ieee80211_mps_sta_status_update(sta);
1160 changed |= ieee80211_mps_set_sta_local_pm(sta,
1161 sdata->u.mesh.mshcfg.power_mode);
1162 break;
1163 case NL80211_PLINK_LISTEN:
1164 case NL80211_PLINK_BLOCKED:
1165 case NL80211_PLINK_OPN_SNT:
1166 case NL80211_PLINK_OPN_RCVD:
1167 case NL80211_PLINK_CNF_RCVD:
1168 case NL80211_PLINK_HOLDING:
1169 if (sta->plink_state == NL80211_PLINK_ESTAB)
1170 changed = mesh_plink_dec_estab_count(
1171 sdata);
1172 sta->plink_state = params->plink_state;
1173
1174 ieee80211_mps_sta_status_update(sta);
1175 changed |= ieee80211_mps_set_sta_local_pm(sta,
1176 NL80211_MESH_POWER_UNKNOWN);
1177 break;
1178 default:
1179 /* nothing */
1180 break;
1181 }
1182 }
1183
1184 switch (params->plink_action) {
1185 case NL80211_PLINK_ACTION_NO_ACTION:
1186 /* nothing */
1187 break;
1188 case NL80211_PLINK_ACTION_OPEN:
1189 changed |= mesh_plink_open(sta);
1190 break;
1191 case NL80211_PLINK_ACTION_BLOCK:
1192 changed |= mesh_plink_block(sta);
1193 break;
1194 }
1195
1196 if (params->local_pm)
1197 changed |=
1198 ieee80211_mps_set_sta_local_pm(sta,
1199 params->local_pm);
1200 ieee80211_mbss_info_change_notify(sdata, changed);
1201 #endif
1202 }
1203
1204 /* set the STA state after all sta info from usermode has been set */
1205 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1206 ret = sta_apply_auth_flags(local, sta, mask, set);
1207 if (ret)
1208 return ret;
1209 }
1210
1211 return 0;
1212 }
1213
1214 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1215 const u8 *mac,
1216 struct station_parameters *params)
1217 {
1218 struct ieee80211_local *local = wiphy_priv(wiphy);
1219 struct sta_info *sta;
1220 struct ieee80211_sub_if_data *sdata;
1221 int err;
1222 int layer2_update;
1223
1224 if (params->vlan) {
1225 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1226
1227 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1228 sdata->vif.type != NL80211_IFTYPE_AP)
1229 return -EINVAL;
1230 } else
1231 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1232
1233 if (ether_addr_equal(mac, sdata->vif.addr))
1234 return -EINVAL;
1235
1236 if (is_multicast_ether_addr(mac))
1237 return -EINVAL;
1238
1239 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1240 if (!sta)
1241 return -ENOMEM;
1242
1243 /*
1244 * defaults -- if userspace wants something else we'll
1245 * change it accordingly in sta_apply_parameters()
1246 */
1247 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1248 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1249 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1250 } else {
1251 sta->sta.tdls = true;
1252 }
1253
1254 err = sta_apply_parameters(local, sta, params);
1255 if (err) {
1256 sta_info_free(local, sta);
1257 return err;
1258 }
1259
1260 /*
1261 * for TDLS, rate control should be initialized only when
1262 * rates are known and station is marked authorized
1263 */
1264 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1265 rate_control_rate_init(sta);
1266
1267 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1268 sdata->vif.type == NL80211_IFTYPE_AP;
1269
1270 err = sta_info_insert_rcu(sta);
1271 if (err) {
1272 rcu_read_unlock();
1273 return err;
1274 }
1275
1276 if (layer2_update)
1277 ieee80211_send_layer2_update(sta);
1278
1279 rcu_read_unlock();
1280
1281 return 0;
1282 }
1283
1284 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1285 struct station_del_parameters *params)
1286 {
1287 struct ieee80211_sub_if_data *sdata;
1288
1289 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1290
1291 if (params->mac)
1292 return sta_info_destroy_addr_bss(sdata, params->mac);
1293
1294 sta_info_flush(sdata);
1295 return 0;
1296 }
1297
1298 static int ieee80211_change_station(struct wiphy *wiphy,
1299 struct net_device *dev, const u8 *mac,
1300 struct station_parameters *params)
1301 {
1302 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1303 struct ieee80211_local *local = wiphy_priv(wiphy);
1304 struct sta_info *sta;
1305 struct ieee80211_sub_if_data *vlansdata;
1306 enum cfg80211_station_type statype;
1307 int err;
1308
1309 mutex_lock(&local->sta_mtx);
1310
1311 sta = sta_info_get_bss(sdata, mac);
1312 if (!sta) {
1313 err = -ENOENT;
1314 goto out_err;
1315 }
1316
1317 switch (sdata->vif.type) {
1318 case NL80211_IFTYPE_MESH_POINT:
1319 if (sdata->u.mesh.user_mpm)
1320 statype = CFG80211_STA_MESH_PEER_USER;
1321 else
1322 statype = CFG80211_STA_MESH_PEER_KERNEL;
1323 break;
1324 case NL80211_IFTYPE_ADHOC:
1325 statype = CFG80211_STA_IBSS;
1326 break;
1327 case NL80211_IFTYPE_STATION:
1328 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1329 statype = CFG80211_STA_AP_STA;
1330 break;
1331 }
1332 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1333 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1334 else
1335 statype = CFG80211_STA_TDLS_PEER_SETUP;
1336 break;
1337 case NL80211_IFTYPE_AP:
1338 case NL80211_IFTYPE_AP_VLAN:
1339 statype = CFG80211_STA_AP_CLIENT;
1340 break;
1341 default:
1342 err = -EOPNOTSUPP;
1343 goto out_err;
1344 }
1345
1346 err = cfg80211_check_station_change(wiphy, params, statype);
1347 if (err)
1348 goto out_err;
1349
1350 if (params->vlan && params->vlan != sta->sdata->dev) {
1351 bool prev_4addr = false;
1352 bool new_4addr = false;
1353
1354 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1355
1356 if (params->vlan->ieee80211_ptr->use_4addr) {
1357 if (vlansdata->u.vlan.sta) {
1358 err = -EBUSY;
1359 goto out_err;
1360 }
1361
1362 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1363 new_4addr = true;
1364 }
1365
1366 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1367 sta->sdata->u.vlan.sta) {
1368 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1369 prev_4addr = true;
1370 }
1371
1372 sta->sdata = vlansdata;
1373 ieee80211_check_fast_xmit(sta);
1374
1375 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1376 prev_4addr != new_4addr) {
1377 if (new_4addr)
1378 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1379 else
1380 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1381 }
1382
1383 ieee80211_send_layer2_update(sta);
1384 }
1385
1386 err = sta_apply_parameters(local, sta, params);
1387 if (err)
1388 goto out_err;
1389
1390 mutex_unlock(&local->sta_mtx);
1391
1392 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1393 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1394 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1395 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1396 sta_info_tx_streams(sta) != 1) {
1397 ht_dbg(sta->sdata,
1398 "%pM just authorized and MIMO capable - update SMPS\n",
1399 sta->sta.addr);
1400 ieee80211_send_smps_action(sta->sdata,
1401 sta->sdata->bss->req_smps,
1402 sta->sta.addr,
1403 sta->sdata->vif.bss_conf.bssid);
1404 }
1405
1406 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1407 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1408 ieee80211_recalc_ps(local, -1);
1409 ieee80211_recalc_ps_vif(sdata);
1410 }
1411
1412 return 0;
1413 out_err:
1414 mutex_unlock(&local->sta_mtx);
1415 return err;
1416 }
1417
1418 #ifdef CONFIG_MAC80211_MESH
1419 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1420 const u8 *dst, const u8 *next_hop)
1421 {
1422 struct ieee80211_sub_if_data *sdata;
1423 struct mesh_path *mpath;
1424 struct sta_info *sta;
1425
1426 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1427
1428 rcu_read_lock();
1429 sta = sta_info_get(sdata, next_hop);
1430 if (!sta) {
1431 rcu_read_unlock();
1432 return -ENOENT;
1433 }
1434
1435 mpath = mesh_path_add(sdata, dst);
1436 if (IS_ERR(mpath)) {
1437 rcu_read_unlock();
1438 return PTR_ERR(mpath);
1439 }
1440
1441 mesh_path_fix_nexthop(mpath, sta);
1442
1443 rcu_read_unlock();
1444 return 0;
1445 }
1446
1447 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1448 const u8 *dst)
1449 {
1450 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451
1452 if (dst)
1453 return mesh_path_del(sdata, dst);
1454
1455 mesh_path_flush_by_iface(sdata);
1456 return 0;
1457 }
1458
1459 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1460 const u8 *dst, const u8 *next_hop)
1461 {
1462 struct ieee80211_sub_if_data *sdata;
1463 struct mesh_path *mpath;
1464 struct sta_info *sta;
1465
1466 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1467
1468 rcu_read_lock();
1469
1470 sta = sta_info_get(sdata, next_hop);
1471 if (!sta) {
1472 rcu_read_unlock();
1473 return -ENOENT;
1474 }
1475
1476 mpath = mesh_path_lookup(sdata, dst);
1477 if (!mpath) {
1478 rcu_read_unlock();
1479 return -ENOENT;
1480 }
1481
1482 mesh_path_fix_nexthop(mpath, sta);
1483
1484 rcu_read_unlock();
1485 return 0;
1486 }
1487
1488 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1489 struct mpath_info *pinfo)
1490 {
1491 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1492
1493 if (next_hop_sta)
1494 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1495 else
1496 eth_zero_addr(next_hop);
1497
1498 memset(pinfo, 0, sizeof(*pinfo));
1499
1500 pinfo->generation = mesh_paths_generation;
1501
1502 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1503 MPATH_INFO_SN |
1504 MPATH_INFO_METRIC |
1505 MPATH_INFO_EXPTIME |
1506 MPATH_INFO_DISCOVERY_TIMEOUT |
1507 MPATH_INFO_DISCOVERY_RETRIES |
1508 MPATH_INFO_FLAGS;
1509
1510 pinfo->frame_qlen = mpath->frame_queue.qlen;
1511 pinfo->sn = mpath->sn;
1512 pinfo->metric = mpath->metric;
1513 if (time_before(jiffies, mpath->exp_time))
1514 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1515 pinfo->discovery_timeout =
1516 jiffies_to_msecs(mpath->discovery_timeout);
1517 pinfo->discovery_retries = mpath->discovery_retries;
1518 if (mpath->flags & MESH_PATH_ACTIVE)
1519 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1520 if (mpath->flags & MESH_PATH_RESOLVING)
1521 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1522 if (mpath->flags & MESH_PATH_SN_VALID)
1523 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1524 if (mpath->flags & MESH_PATH_FIXED)
1525 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1526 if (mpath->flags & MESH_PATH_RESOLVED)
1527 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1528 }
1529
1530 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1531 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1532
1533 {
1534 struct ieee80211_sub_if_data *sdata;
1535 struct mesh_path *mpath;
1536
1537 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538
1539 rcu_read_lock();
1540 mpath = mesh_path_lookup(sdata, dst);
1541 if (!mpath) {
1542 rcu_read_unlock();
1543 return -ENOENT;
1544 }
1545 memcpy(dst, mpath->dst, ETH_ALEN);
1546 mpath_set_pinfo(mpath, next_hop, pinfo);
1547 rcu_read_unlock();
1548 return 0;
1549 }
1550
1551 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1552 int idx, u8 *dst, u8 *next_hop,
1553 struct mpath_info *pinfo)
1554 {
1555 struct ieee80211_sub_if_data *sdata;
1556 struct mesh_path *mpath;
1557
1558 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1559
1560 rcu_read_lock();
1561 mpath = mesh_path_lookup_by_idx(sdata, idx);
1562 if (!mpath) {
1563 rcu_read_unlock();
1564 return -ENOENT;
1565 }
1566 memcpy(dst, mpath->dst, ETH_ALEN);
1567 mpath_set_pinfo(mpath, next_hop, pinfo);
1568 rcu_read_unlock();
1569 return 0;
1570 }
1571
1572 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1573 struct mpath_info *pinfo)
1574 {
1575 memset(pinfo, 0, sizeof(*pinfo));
1576 memcpy(mpp, mpath->mpp, ETH_ALEN);
1577
1578 pinfo->generation = mpp_paths_generation;
1579 }
1580
1581 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1582 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1583
1584 {
1585 struct ieee80211_sub_if_data *sdata;
1586 struct mesh_path *mpath;
1587
1588 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1589
1590 rcu_read_lock();
1591 mpath = mpp_path_lookup(sdata, dst);
1592 if (!mpath) {
1593 rcu_read_unlock();
1594 return -ENOENT;
1595 }
1596 memcpy(dst, mpath->dst, ETH_ALEN);
1597 mpp_set_pinfo(mpath, mpp, pinfo);
1598 rcu_read_unlock();
1599 return 0;
1600 }
1601
1602 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1603 int idx, u8 *dst, u8 *mpp,
1604 struct mpath_info *pinfo)
1605 {
1606 struct ieee80211_sub_if_data *sdata;
1607 struct mesh_path *mpath;
1608
1609 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1610
1611 rcu_read_lock();
1612 mpath = mpp_path_lookup_by_idx(sdata, idx);
1613 if (!mpath) {
1614 rcu_read_unlock();
1615 return -ENOENT;
1616 }
1617 memcpy(dst, mpath->dst, ETH_ALEN);
1618 mpp_set_pinfo(mpath, mpp, pinfo);
1619 rcu_read_unlock();
1620 return 0;
1621 }
1622
1623 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1624 struct net_device *dev,
1625 struct mesh_config *conf)
1626 {
1627 struct ieee80211_sub_if_data *sdata;
1628 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629
1630 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1631 return 0;
1632 }
1633
1634 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1635 {
1636 return (mask >> (parm-1)) & 0x1;
1637 }
1638
1639 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1640 const struct mesh_setup *setup)
1641 {
1642 u8 *new_ie;
1643 const u8 *old_ie;
1644 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1645 struct ieee80211_sub_if_data, u.mesh);
1646
1647 /* allocate information elements */
1648 new_ie = NULL;
1649 old_ie = ifmsh->ie;
1650
1651 if (setup->ie_len) {
1652 new_ie = kmemdup(setup->ie, setup->ie_len,
1653 GFP_KERNEL);
1654 if (!new_ie)
1655 return -ENOMEM;
1656 }
1657 ifmsh->ie_len = setup->ie_len;
1658 ifmsh->ie = new_ie;
1659 kfree(old_ie);
1660
1661 /* now copy the rest of the setup parameters */
1662 ifmsh->mesh_id_len = setup->mesh_id_len;
1663 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1664 ifmsh->mesh_sp_id = setup->sync_method;
1665 ifmsh->mesh_pp_id = setup->path_sel_proto;
1666 ifmsh->mesh_pm_id = setup->path_metric;
1667 ifmsh->user_mpm = setup->user_mpm;
1668 ifmsh->mesh_auth_id = setup->auth_id;
1669 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1670 if (setup->is_authenticated)
1671 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1672 if (setup->is_secure)
1673 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1674
1675 /* mcast rate setting in Mesh Node */
1676 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1677 sizeof(setup->mcast_rate));
1678 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1679
1680 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1681 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1682
1683 return 0;
1684 }
1685
1686 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1687 struct net_device *dev, u32 mask,
1688 const struct mesh_config *nconf)
1689 {
1690 struct mesh_config *conf;
1691 struct ieee80211_sub_if_data *sdata;
1692 struct ieee80211_if_mesh *ifmsh;
1693
1694 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695 ifmsh = &sdata->u.mesh;
1696
1697 /* Set the config options which we are interested in setting */
1698 conf = &(sdata->u.mesh.mshcfg);
1699 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1700 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1701 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1702 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1703 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1704 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1705 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1706 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1707 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1708 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1709 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1710 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1711 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1712 conf->element_ttl = nconf->element_ttl;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1714 if (ifmsh->user_mpm)
1715 return -EBUSY;
1716 conf->auto_open_plinks = nconf->auto_open_plinks;
1717 }
1718 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1719 conf->dot11MeshNbrOffsetMaxNeighbor =
1720 nconf->dot11MeshNbrOffsetMaxNeighbor;
1721 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1722 conf->dot11MeshHWMPmaxPREQretries =
1723 nconf->dot11MeshHWMPmaxPREQretries;
1724 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1725 conf->path_refresh_time = nconf->path_refresh_time;
1726 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1727 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1728 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1729 conf->dot11MeshHWMPactivePathTimeout =
1730 nconf->dot11MeshHWMPactivePathTimeout;
1731 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1732 conf->dot11MeshHWMPpreqMinInterval =
1733 nconf->dot11MeshHWMPpreqMinInterval;
1734 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1735 conf->dot11MeshHWMPperrMinInterval =
1736 nconf->dot11MeshHWMPperrMinInterval;
1737 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1738 mask))
1739 conf->dot11MeshHWMPnetDiameterTraversalTime =
1740 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1741 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1742 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1743 ieee80211_mesh_root_setup(ifmsh);
1744 }
1745 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1746 /* our current gate announcement implementation rides on root
1747 * announcements, so require this ifmsh to also be a root node
1748 * */
1749 if (nconf->dot11MeshGateAnnouncementProtocol &&
1750 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1751 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1752 ieee80211_mesh_root_setup(ifmsh);
1753 }
1754 conf->dot11MeshGateAnnouncementProtocol =
1755 nconf->dot11MeshGateAnnouncementProtocol;
1756 }
1757 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1758 conf->dot11MeshHWMPRannInterval =
1759 nconf->dot11MeshHWMPRannInterval;
1760 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1761 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1762 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1763 /* our RSSI threshold implementation is supported only for
1764 * devices that report signal in dBm.
1765 */
1766 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1767 return -ENOTSUPP;
1768 conf->rssi_threshold = nconf->rssi_threshold;
1769 }
1770 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1771 conf->ht_opmode = nconf->ht_opmode;
1772 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1773 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1774 }
1775 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1776 conf->dot11MeshHWMPactivePathToRootTimeout =
1777 nconf->dot11MeshHWMPactivePathToRootTimeout;
1778 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1779 conf->dot11MeshHWMProotInterval =
1780 nconf->dot11MeshHWMProotInterval;
1781 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1782 conf->dot11MeshHWMPconfirmationInterval =
1783 nconf->dot11MeshHWMPconfirmationInterval;
1784 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1785 conf->power_mode = nconf->power_mode;
1786 ieee80211_mps_local_status_update(sdata);
1787 }
1788 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1789 conf->dot11MeshAwakeWindowDuration =
1790 nconf->dot11MeshAwakeWindowDuration;
1791 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1792 conf->plink_timeout = nconf->plink_timeout;
1793 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1794 return 0;
1795 }
1796
1797 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1798 const struct mesh_config *conf,
1799 const struct mesh_setup *setup)
1800 {
1801 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1802 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1803 int err;
1804
1805 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1806 err = copy_mesh_setup(ifmsh, setup);
1807 if (err)
1808 return err;
1809
1810 /* can mesh use other SMPS modes? */
1811 sdata->smps_mode = IEEE80211_SMPS_OFF;
1812 sdata->needed_rx_chains = sdata->local->rx_chains;
1813
1814 mutex_lock(&sdata->local->mtx);
1815 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1816 IEEE80211_CHANCTX_SHARED);
1817 mutex_unlock(&sdata->local->mtx);
1818 if (err)
1819 return err;
1820
1821 return ieee80211_start_mesh(sdata);
1822 }
1823
1824 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1825 {
1826 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1827
1828 ieee80211_stop_mesh(sdata);
1829 mutex_lock(&sdata->local->mtx);
1830 ieee80211_vif_release_channel(sdata);
1831 mutex_unlock(&sdata->local->mtx);
1832
1833 return 0;
1834 }
1835 #endif
1836
1837 static int ieee80211_change_bss(struct wiphy *wiphy,
1838 struct net_device *dev,
1839 struct bss_parameters *params)
1840 {
1841 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842 enum ieee80211_band band;
1843 u32 changed = 0;
1844
1845 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1846 return -ENOENT;
1847
1848 band = ieee80211_get_sdata_band(sdata);
1849
1850 if (params->use_cts_prot >= 0) {
1851 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1852 changed |= BSS_CHANGED_ERP_CTS_PROT;
1853 }
1854 if (params->use_short_preamble >= 0) {
1855 sdata->vif.bss_conf.use_short_preamble =
1856 params->use_short_preamble;
1857 changed |= BSS_CHANGED_ERP_PREAMBLE;
1858 }
1859
1860 if (!sdata->vif.bss_conf.use_short_slot &&
1861 band == IEEE80211_BAND_5GHZ) {
1862 sdata->vif.bss_conf.use_short_slot = true;
1863 changed |= BSS_CHANGED_ERP_SLOT;
1864 }
1865
1866 if (params->use_short_slot_time >= 0) {
1867 sdata->vif.bss_conf.use_short_slot =
1868 params->use_short_slot_time;
1869 changed |= BSS_CHANGED_ERP_SLOT;
1870 }
1871
1872 if (params->basic_rates) {
1873 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1874 wiphy->bands[band],
1875 params->basic_rates,
1876 params->basic_rates_len,
1877 &sdata->vif.bss_conf.basic_rates);
1878 changed |= BSS_CHANGED_BASIC_RATES;
1879 }
1880
1881 if (params->ap_isolate >= 0) {
1882 if (params->ap_isolate)
1883 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1884 else
1885 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1886 }
1887
1888 if (params->ht_opmode >= 0) {
1889 sdata->vif.bss_conf.ht_operation_mode =
1890 (u16) params->ht_opmode;
1891 changed |= BSS_CHANGED_HT;
1892 }
1893
1894 if (params->p2p_ctwindow >= 0) {
1895 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1896 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1897 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1898 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1899 changed |= BSS_CHANGED_P2P_PS;
1900 }
1901
1902 if (params->p2p_opp_ps > 0) {
1903 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1904 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1905 changed |= BSS_CHANGED_P2P_PS;
1906 } else if (params->p2p_opp_ps == 0) {
1907 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1908 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1909 changed |= BSS_CHANGED_P2P_PS;
1910 }
1911
1912 ieee80211_bss_info_change_notify(sdata, changed);
1913
1914 return 0;
1915 }
1916
1917 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1918 struct net_device *dev,
1919 struct ieee80211_txq_params *params)
1920 {
1921 struct ieee80211_local *local = wiphy_priv(wiphy);
1922 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923 struct ieee80211_tx_queue_params p;
1924
1925 if (!local->ops->conf_tx)
1926 return -EOPNOTSUPP;
1927
1928 if (local->hw.queues < IEEE80211_NUM_ACS)
1929 return -EOPNOTSUPP;
1930
1931 memset(&p, 0, sizeof(p));
1932 p.aifs = params->aifs;
1933 p.cw_max = params->cwmax;
1934 p.cw_min = params->cwmin;
1935 p.txop = params->txop;
1936
1937 /*
1938 * Setting tx queue params disables u-apsd because it's only
1939 * called in master mode.
1940 */
1941 p.uapsd = false;
1942
1943 sdata->tx_conf[params->ac] = p;
1944 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1945 wiphy_debug(local->hw.wiphy,
1946 "failed to set TX queue parameters for AC %d\n",
1947 params->ac);
1948 return -EINVAL;
1949 }
1950
1951 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1952
1953 return 0;
1954 }
1955
1956 #ifdef CONFIG_PM
1957 static int ieee80211_suspend(struct wiphy *wiphy,
1958 struct cfg80211_wowlan *wowlan)
1959 {
1960 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1961 }
1962
1963 static int ieee80211_resume(struct wiphy *wiphy)
1964 {
1965 return __ieee80211_resume(wiphy_priv(wiphy));
1966 }
1967 #else
1968 #define ieee80211_suspend NULL
1969 #define ieee80211_resume NULL
1970 #endif
1971
1972 static int ieee80211_scan(struct wiphy *wiphy,
1973 struct cfg80211_scan_request *req)
1974 {
1975 struct ieee80211_sub_if_data *sdata;
1976
1977 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1978
1979 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1980 case NL80211_IFTYPE_STATION:
1981 case NL80211_IFTYPE_ADHOC:
1982 case NL80211_IFTYPE_MESH_POINT:
1983 case NL80211_IFTYPE_P2P_CLIENT:
1984 case NL80211_IFTYPE_P2P_DEVICE:
1985 break;
1986 case NL80211_IFTYPE_P2P_GO:
1987 if (sdata->local->ops->hw_scan)
1988 break;
1989 /*
1990 * FIXME: implement NoA while scanning in software,
1991 * for now fall through to allow scanning only when
1992 * beaconing hasn't been configured yet
1993 */
1994 case NL80211_IFTYPE_AP:
1995 /*
1996 * If the scan has been forced (and the driver supports
1997 * forcing), don't care about being beaconing already.
1998 * This will create problems to the attached stations (e.g. all
1999 * the frames sent while scanning on other channel will be
2000 * lost)
2001 */
2002 if (sdata->u.ap.beacon &&
2003 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2004 !(req->flags & NL80211_SCAN_FLAG_AP)))
2005 return -EOPNOTSUPP;
2006 break;
2007 default:
2008 return -EOPNOTSUPP;
2009 }
2010
2011 return ieee80211_request_scan(sdata, req);
2012 }
2013
2014 static int
2015 ieee80211_sched_scan_start(struct wiphy *wiphy,
2016 struct net_device *dev,
2017 struct cfg80211_sched_scan_request *req)
2018 {
2019 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2020
2021 if (!sdata->local->ops->sched_scan_start)
2022 return -EOPNOTSUPP;
2023
2024 return ieee80211_request_sched_scan_start(sdata, req);
2025 }
2026
2027 static int
2028 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2029 {
2030 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2031
2032 if (!sdata->local->ops->sched_scan_stop)
2033 return -EOPNOTSUPP;
2034
2035 return ieee80211_request_sched_scan_stop(sdata);
2036 }
2037
2038 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2039 struct cfg80211_auth_request *req)
2040 {
2041 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043
2044 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2045 struct cfg80211_assoc_request *req)
2046 {
2047 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2048 }
2049
2050 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2051 struct cfg80211_deauth_request *req)
2052 {
2053 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2054 }
2055
2056 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2057 struct cfg80211_disassoc_request *req)
2058 {
2059 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2060 }
2061
2062 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2063 struct cfg80211_ibss_params *params)
2064 {
2065 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2066 }
2067
2068 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2069 {
2070 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2071 }
2072
2073 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2074 struct ocb_setup *setup)
2075 {
2076 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2077 }
2078
2079 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2080 {
2081 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2082 }
2083
2084 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2085 int rate[IEEE80211_NUM_BANDS])
2086 {
2087 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2088
2089 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2090 sizeof(int) * IEEE80211_NUM_BANDS);
2091
2092 return 0;
2093 }
2094
2095 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2096 {
2097 struct ieee80211_local *local = wiphy_priv(wiphy);
2098 int err;
2099
2100 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2101 ieee80211_check_fast_xmit_all(local);
2102
2103 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2104
2105 if (err) {
2106 ieee80211_check_fast_xmit_all(local);
2107 return err;
2108 }
2109 }
2110
2111 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2112 (changed & WIPHY_PARAM_DYN_ACK)) {
2113 s16 coverage_class;
2114
2115 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2116 wiphy->coverage_class : -1;
2117 err = drv_set_coverage_class(local, coverage_class);
2118
2119 if (err)
2120 return err;
2121 }
2122
2123 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2124 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2125
2126 if (err)
2127 return err;
2128 }
2129
2130 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2131 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2132 return -EINVAL;
2133 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2134 }
2135 if (changed & WIPHY_PARAM_RETRY_LONG) {
2136 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2137 return -EINVAL;
2138 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2139 }
2140 if (changed &
2141 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2142 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2143
2144 return 0;
2145 }
2146
2147 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2148 struct wireless_dev *wdev,
2149 enum nl80211_tx_power_setting type, int mbm)
2150 {
2151 struct ieee80211_local *local = wiphy_priv(wiphy);
2152 struct ieee80211_sub_if_data *sdata;
2153 enum nl80211_tx_power_setting txp_type = type;
2154 bool update_txp_type = false;
2155
2156 if (wdev) {
2157 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2158
2159 switch (type) {
2160 case NL80211_TX_POWER_AUTOMATIC:
2161 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2162 txp_type = NL80211_TX_POWER_LIMITED;
2163 break;
2164 case NL80211_TX_POWER_LIMITED:
2165 case NL80211_TX_POWER_FIXED:
2166 if (mbm < 0 || (mbm % 100))
2167 return -EOPNOTSUPP;
2168 sdata->user_power_level = MBM_TO_DBM(mbm);
2169 break;
2170 }
2171
2172 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2173 update_txp_type = true;
2174 sdata->vif.bss_conf.txpower_type = txp_type;
2175 }
2176
2177 ieee80211_recalc_txpower(sdata, update_txp_type);
2178
2179 return 0;
2180 }
2181
2182 switch (type) {
2183 case NL80211_TX_POWER_AUTOMATIC:
2184 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2185 txp_type = NL80211_TX_POWER_LIMITED;
2186 break;
2187 case NL80211_TX_POWER_LIMITED:
2188 case NL80211_TX_POWER_FIXED:
2189 if (mbm < 0 || (mbm % 100))
2190 return -EOPNOTSUPP;
2191 local->user_power_level = MBM_TO_DBM(mbm);
2192 break;
2193 }
2194
2195 mutex_lock(&local->iflist_mtx);
2196 list_for_each_entry(sdata, &local->interfaces, list) {
2197 sdata->user_power_level = local->user_power_level;
2198 if (txp_type != sdata->vif.bss_conf.txpower_type)
2199 update_txp_type = true;
2200 sdata->vif.bss_conf.txpower_type = txp_type;
2201 }
2202 list_for_each_entry(sdata, &local->interfaces, list)
2203 ieee80211_recalc_txpower(sdata, update_txp_type);
2204 mutex_unlock(&local->iflist_mtx);
2205
2206 return 0;
2207 }
2208
2209 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2210 struct wireless_dev *wdev,
2211 int *dbm)
2212 {
2213 struct ieee80211_local *local = wiphy_priv(wiphy);
2214 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2215
2216 if (local->ops->get_txpower)
2217 return drv_get_txpower(local, sdata, dbm);
2218
2219 if (!local->use_chanctx)
2220 *dbm = local->hw.conf.power_level;
2221 else
2222 *dbm = sdata->vif.bss_conf.txpower;
2223
2224 return 0;
2225 }
2226
2227 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2228 const u8 *addr)
2229 {
2230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2231
2232 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2233
2234 return 0;
2235 }
2236
2237 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2238 {
2239 struct ieee80211_local *local = wiphy_priv(wiphy);
2240
2241 drv_rfkill_poll(local);
2242 }
2243
2244 #ifdef CONFIG_NL80211_TESTMODE
2245 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2246 struct wireless_dev *wdev,
2247 void *data, int len)
2248 {
2249 struct ieee80211_local *local = wiphy_priv(wiphy);
2250 struct ieee80211_vif *vif = NULL;
2251
2252 if (!local->ops->testmode_cmd)
2253 return -EOPNOTSUPP;
2254
2255 if (wdev) {
2256 struct ieee80211_sub_if_data *sdata;
2257
2258 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2259 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2260 vif = &sdata->vif;
2261 }
2262
2263 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2264 }
2265
2266 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2267 struct sk_buff *skb,
2268 struct netlink_callback *cb,
2269 void *data, int len)
2270 {
2271 struct ieee80211_local *local = wiphy_priv(wiphy);
2272
2273 if (!local->ops->testmode_dump)
2274 return -EOPNOTSUPP;
2275
2276 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2277 }
2278 #endif
2279
2280 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2281 enum ieee80211_smps_mode smps_mode)
2282 {
2283 struct sta_info *sta;
2284 enum ieee80211_smps_mode old_req;
2285
2286 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2287 return -EINVAL;
2288
2289 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2290 return 0;
2291
2292 old_req = sdata->u.ap.req_smps;
2293 sdata->u.ap.req_smps = smps_mode;
2294
2295 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2296 if (old_req == smps_mode ||
2297 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2298 return 0;
2299
2300 /* If no associated stations, there's no need to do anything */
2301 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2302 sdata->smps_mode = smps_mode;
2303 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2304 return 0;
2305 }
2306
2307 ht_dbg(sdata,
2308 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2309 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2310
2311 mutex_lock(&sdata->local->sta_mtx);
2312 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2313 /*
2314 * Only stations associated to our AP and
2315 * associated VLANs
2316 */
2317 if (sta->sdata->bss != &sdata->u.ap)
2318 continue;
2319
2320 /* This station doesn't support MIMO - skip it */
2321 if (sta_info_tx_streams(sta) == 1)
2322 continue;
2323
2324 /*
2325 * Don't wake up a STA just to send the action frame
2326 * unless we are getting more restrictive.
2327 */
2328 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2329 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2330 smps_mode)) {
2331 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2332 sta->sta.addr);
2333 continue;
2334 }
2335
2336 /*
2337 * If the STA is not authorized, wait until it gets
2338 * authorized and the action frame will be sent then.
2339 */
2340 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2341 continue;
2342
2343 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2344 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2345 sdata->vif.bss_conf.bssid);
2346 }
2347 mutex_unlock(&sdata->local->sta_mtx);
2348
2349 sdata->smps_mode = smps_mode;
2350 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2351
2352 return 0;
2353 }
2354
2355 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2356 enum ieee80211_smps_mode smps_mode)
2357 {
2358 const u8 *ap;
2359 enum ieee80211_smps_mode old_req;
2360 int err;
2361
2362 lockdep_assert_held(&sdata->wdev.mtx);
2363
2364 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2365 return -EINVAL;
2366
2367 old_req = sdata->u.mgd.req_smps;
2368 sdata->u.mgd.req_smps = smps_mode;
2369
2370 if (old_req == smps_mode &&
2371 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2372 return 0;
2373
2374 /*
2375 * If not associated, or current association is not an HT
2376 * association, there's no need to do anything, just store
2377 * the new value until we associate.
2378 */
2379 if (!sdata->u.mgd.associated ||
2380 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2381 return 0;
2382
2383 ap = sdata->u.mgd.associated->bssid;
2384
2385 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2386 if (sdata->u.mgd.powersave)
2387 smps_mode = IEEE80211_SMPS_DYNAMIC;
2388 else
2389 smps_mode = IEEE80211_SMPS_OFF;
2390 }
2391
2392 /* send SM PS frame to AP */
2393 err = ieee80211_send_smps_action(sdata, smps_mode,
2394 ap, ap);
2395 if (err)
2396 sdata->u.mgd.req_smps = old_req;
2397
2398 return err;
2399 }
2400
2401 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2402 bool enabled, int timeout)
2403 {
2404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2405 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2406
2407 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2408 return -EOPNOTSUPP;
2409
2410 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2411 return -EOPNOTSUPP;
2412
2413 if (enabled == sdata->u.mgd.powersave &&
2414 timeout == local->dynamic_ps_forced_timeout)
2415 return 0;
2416
2417 sdata->u.mgd.powersave = enabled;
2418 local->dynamic_ps_forced_timeout = timeout;
2419
2420 /* no change, but if automatic follow powersave */
2421 sdata_lock(sdata);
2422 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2423 sdata_unlock(sdata);
2424
2425 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2426 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2427
2428 ieee80211_recalc_ps(local, -1);
2429 ieee80211_recalc_ps_vif(sdata);
2430
2431 return 0;
2432 }
2433
2434 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2435 struct net_device *dev,
2436 s32 rssi_thold, u32 rssi_hyst)
2437 {
2438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2439 struct ieee80211_vif *vif = &sdata->vif;
2440 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2441
2442 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2443 rssi_hyst == bss_conf->cqm_rssi_hyst)
2444 return 0;
2445
2446 bss_conf->cqm_rssi_thold = rssi_thold;
2447 bss_conf->cqm_rssi_hyst = rssi_hyst;
2448
2449 /* tell the driver upon association, unless already associated */
2450 if (sdata->u.mgd.associated &&
2451 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2452 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2453
2454 return 0;
2455 }
2456
2457 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2458 struct net_device *dev,
2459 const u8 *addr,
2460 const struct cfg80211_bitrate_mask *mask)
2461 {
2462 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2463 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2464 int i, ret;
2465
2466 if (!ieee80211_sdata_running(sdata))
2467 return -ENETDOWN;
2468
2469 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2470 ret = drv_set_bitrate_mask(local, sdata, mask);
2471 if (ret)
2472 return ret;
2473 }
2474
2475 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2476 struct ieee80211_supported_band *sband = wiphy->bands[i];
2477 int j;
2478
2479 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2480 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2481 sizeof(mask->control[i].ht_mcs));
2482
2483 sdata->rc_has_mcs_mask[i] = false;
2484 if (!sband)
2485 continue;
2486
2487 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2488 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2489 sdata->rc_has_mcs_mask[i] = true;
2490 break;
2491 }
2492 }
2493
2494 return 0;
2495 }
2496
2497 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2498 struct ieee80211_roc_work *new_roc,
2499 struct ieee80211_roc_work *cur_roc)
2500 {
2501 unsigned long now = jiffies;
2502 unsigned long remaining = cur_roc->hw_start_time +
2503 msecs_to_jiffies(cur_roc->duration) -
2504 now;
2505
2506 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2507 return false;
2508
2509 /* if it doesn't fit entirely, schedule a new one */
2510 if (new_roc->duration > jiffies_to_msecs(remaining))
2511 return false;
2512
2513 ieee80211_handle_roc_started(new_roc);
2514
2515 /* add to dependents so we send the expired event properly */
2516 list_add_tail(&new_roc->list, &cur_roc->dependents);
2517 return true;
2518 }
2519
2520 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2521 {
2522 lockdep_assert_held(&local->mtx);
2523
2524 local->roc_cookie_counter++;
2525
2526 /* wow, you wrapped 64 bits ... more likely a bug */
2527 if (WARN_ON(local->roc_cookie_counter == 0))
2528 local->roc_cookie_counter++;
2529
2530 return local->roc_cookie_counter;
2531 }
2532
2533 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2534 struct ieee80211_sub_if_data *sdata,
2535 struct ieee80211_channel *channel,
2536 unsigned int duration, u64 *cookie,
2537 struct sk_buff *txskb,
2538 enum ieee80211_roc_type type)
2539 {
2540 struct ieee80211_roc_work *roc, *tmp;
2541 bool queued = false;
2542 int ret;
2543
2544 lockdep_assert_held(&local->mtx);
2545
2546 if (local->use_chanctx && !local->ops->remain_on_channel)
2547 return -EOPNOTSUPP;
2548
2549 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2550 if (!roc)
2551 return -ENOMEM;
2552
2553 /*
2554 * If the duration is zero, then the driver
2555 * wouldn't actually do anything. Set it to
2556 * 10 for now.
2557 *
2558 * TODO: cancel the off-channel operation
2559 * when we get the SKB's TX status and
2560 * the wait time was zero before.
2561 */
2562 if (!duration)
2563 duration = 10;
2564
2565 roc->chan = channel;
2566 roc->duration = duration;
2567 roc->req_duration = duration;
2568 roc->frame = txskb;
2569 roc->type = type;
2570 roc->sdata = sdata;
2571 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2572 INIT_LIST_HEAD(&roc->dependents);
2573
2574 /*
2575 * cookie is either the roc cookie (for normal roc)
2576 * or the SKB (for mgmt TX)
2577 */
2578 if (!txskb) {
2579 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2580 *cookie = roc->cookie;
2581 } else {
2582 roc->mgmt_tx_cookie = *cookie;
2583 }
2584
2585 /* if there's one pending or we're scanning, queue this one */
2586 if (!list_empty(&local->roc_list) ||
2587 local->scanning || ieee80211_is_radar_required(local))
2588 goto out_check_combine;
2589
2590 /* if not HW assist, just queue & schedule work */
2591 if (!local->ops->remain_on_channel) {
2592 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2593 goto out_queue;
2594 }
2595
2596 /* otherwise actually kick it off here (for error handling) */
2597
2598 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2599 if (ret) {
2600 kfree(roc);
2601 return ret;
2602 }
2603
2604 roc->started = true;
2605 goto out_queue;
2606
2607 out_check_combine:
2608 list_for_each_entry(tmp, &local->roc_list, list) {
2609 if (tmp->chan != channel || tmp->sdata != sdata)
2610 continue;
2611
2612 /*
2613 * Extend this ROC if possible:
2614 *
2615 * If it hasn't started yet, just increase the duration
2616 * and add the new one to the list of dependents.
2617 * If the type of the new ROC has higher priority, modify the
2618 * type of the previous one to match that of the new one.
2619 */
2620 if (!tmp->started) {
2621 list_add_tail(&roc->list, &tmp->dependents);
2622 tmp->duration = max(tmp->duration, roc->duration);
2623 tmp->type = max(tmp->type, roc->type);
2624 queued = true;
2625 break;
2626 }
2627
2628 /* If it has already started, it's more difficult ... */
2629 if (local->ops->remain_on_channel) {
2630 /*
2631 * In the offloaded ROC case, if it hasn't begun, add
2632 * this new one to the dependent list to be handled
2633 * when the master one begins. If it has begun,
2634 * check if it fits entirely within the existing one,
2635 * in which case it will just be dependent as well.
2636 * Otherwise, schedule it by itself.
2637 */
2638 if (!tmp->hw_begun) {
2639 list_add_tail(&roc->list, &tmp->dependents);
2640 queued = true;
2641 break;
2642 }
2643
2644 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2645 queued = true;
2646 } else if (del_timer_sync(&tmp->work.timer)) {
2647 unsigned long new_end;
2648
2649 /*
2650 * In the software ROC case, cancel the timer, if
2651 * that fails then the finish work is already
2652 * queued/pending and thus we queue the new ROC
2653 * normally, if that succeeds then we can extend
2654 * the timer duration and TX the frame (if any.)
2655 */
2656
2657 list_add_tail(&roc->list, &tmp->dependents);
2658 queued = true;
2659
2660 new_end = jiffies + msecs_to_jiffies(roc->duration);
2661
2662 /* ok, it was started & we canceled timer */
2663 if (time_after(new_end, tmp->work.timer.expires))
2664 mod_timer(&tmp->work.timer, new_end);
2665 else
2666 add_timer(&tmp->work.timer);
2667
2668 ieee80211_handle_roc_started(roc);
2669 }
2670 break;
2671 }
2672
2673 out_queue:
2674 if (!queued)
2675 list_add_tail(&roc->list, &local->roc_list);
2676
2677 return 0;
2678 }
2679
2680 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2681 struct wireless_dev *wdev,
2682 struct ieee80211_channel *chan,
2683 unsigned int duration,
2684 u64 *cookie)
2685 {
2686 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2687 struct ieee80211_local *local = sdata->local;
2688 int ret;
2689
2690 mutex_lock(&local->mtx);
2691 ret = ieee80211_start_roc_work(local, sdata, chan,
2692 duration, cookie, NULL,
2693 IEEE80211_ROC_TYPE_NORMAL);
2694 mutex_unlock(&local->mtx);
2695
2696 return ret;
2697 }
2698
2699 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2700 u64 cookie, bool mgmt_tx)
2701 {
2702 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2703 int ret;
2704
2705 mutex_lock(&local->mtx);
2706 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2707 struct ieee80211_roc_work *dep, *tmp2;
2708
2709 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2710 if (!mgmt_tx && dep->cookie != cookie)
2711 continue;
2712 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2713 continue;
2714 /* found dependent item -- just remove it */
2715 list_del(&dep->list);
2716 mutex_unlock(&local->mtx);
2717
2718 ieee80211_roc_notify_destroy(dep, true);
2719 return 0;
2720 }
2721
2722 if (!mgmt_tx && roc->cookie != cookie)
2723 continue;
2724 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2725 continue;
2726
2727 found = roc;
2728 break;
2729 }
2730
2731 if (!found) {
2732 mutex_unlock(&local->mtx);
2733 return -ENOENT;
2734 }
2735
2736 /*
2737 * We found the item to cancel, so do that. Note that it
2738 * may have dependents, which we also cancel (and send
2739 * the expired signal for.) Not doing so would be quite
2740 * tricky here, but we may need to fix it later.
2741 */
2742
2743 if (local->ops->remain_on_channel) {
2744 if (found->started) {
2745 ret = drv_cancel_remain_on_channel(local);
2746 if (WARN_ON_ONCE(ret)) {
2747 mutex_unlock(&local->mtx);
2748 return ret;
2749 }
2750 }
2751
2752 list_del(&found->list);
2753
2754 if (found->started)
2755 ieee80211_start_next_roc(local);
2756 mutex_unlock(&local->mtx);
2757
2758 ieee80211_roc_notify_destroy(found, true);
2759 } else {
2760 /* work may be pending so use it all the time */
2761 found->abort = true;
2762 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2763
2764 mutex_unlock(&local->mtx);
2765
2766 /* work will clean up etc */
2767 flush_delayed_work(&found->work);
2768 WARN_ON(!found->to_be_freed);
2769 kfree(found);
2770 }
2771
2772 return 0;
2773 }
2774
2775 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2776 struct wireless_dev *wdev,
2777 u64 cookie)
2778 {
2779 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2780 struct ieee80211_local *local = sdata->local;
2781
2782 return ieee80211_cancel_roc(local, cookie, false);
2783 }
2784
2785 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2786 struct net_device *dev,
2787 struct cfg80211_chan_def *chandef,
2788 u32 cac_time_ms)
2789 {
2790 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2791 struct ieee80211_local *local = sdata->local;
2792 int err;
2793
2794 mutex_lock(&local->mtx);
2795 if (!list_empty(&local->roc_list) || local->scanning) {
2796 err = -EBUSY;
2797 goto out_unlock;
2798 }
2799
2800 /* whatever, but channel contexts should not complain about that one */
2801 sdata->smps_mode = IEEE80211_SMPS_OFF;
2802 sdata->needed_rx_chains = local->rx_chains;
2803
2804 err = ieee80211_vif_use_channel(sdata, chandef,
2805 IEEE80211_CHANCTX_SHARED);
2806 if (err)
2807 goto out_unlock;
2808
2809 ieee80211_queue_delayed_work(&sdata->local->hw,
2810 &sdata->dfs_cac_timer_work,
2811 msecs_to_jiffies(cac_time_ms));
2812
2813 out_unlock:
2814 mutex_unlock(&local->mtx);
2815 return err;
2816 }
2817
2818 static struct cfg80211_beacon_data *
2819 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2820 {
2821 struct cfg80211_beacon_data *new_beacon;
2822 u8 *pos;
2823 int len;
2824
2825 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2826 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2827 beacon->probe_resp_len;
2828
2829 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2830 if (!new_beacon)
2831 return NULL;
2832
2833 pos = (u8 *)(new_beacon + 1);
2834 if (beacon->head_len) {
2835 new_beacon->head_len = beacon->head_len;
2836 new_beacon->head = pos;
2837 memcpy(pos, beacon->head, beacon->head_len);
2838 pos += beacon->head_len;
2839 }
2840 if (beacon->tail_len) {
2841 new_beacon->tail_len = beacon->tail_len;
2842 new_beacon->tail = pos;
2843 memcpy(pos, beacon->tail, beacon->tail_len);
2844 pos += beacon->tail_len;
2845 }
2846 if (beacon->beacon_ies_len) {
2847 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2848 new_beacon->beacon_ies = pos;
2849 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2850 pos += beacon->beacon_ies_len;
2851 }
2852 if (beacon->proberesp_ies_len) {
2853 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2854 new_beacon->proberesp_ies = pos;
2855 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2856 pos += beacon->proberesp_ies_len;
2857 }
2858 if (beacon->assocresp_ies_len) {
2859 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2860 new_beacon->assocresp_ies = pos;
2861 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2862 pos += beacon->assocresp_ies_len;
2863 }
2864 if (beacon->probe_resp_len) {
2865 new_beacon->probe_resp_len = beacon->probe_resp_len;
2866 beacon->probe_resp = pos;
2867 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2868 pos += beacon->probe_resp_len;
2869 }
2870
2871 return new_beacon;
2872 }
2873
2874 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2875 {
2876 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2877
2878 ieee80211_queue_work(&sdata->local->hw,
2879 &sdata->csa_finalize_work);
2880 }
2881 EXPORT_SYMBOL(ieee80211_csa_finish);
2882
2883 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2884 u32 *changed)
2885 {
2886 int err;
2887
2888 switch (sdata->vif.type) {
2889 case NL80211_IFTYPE_AP:
2890 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2891 NULL);
2892 kfree(sdata->u.ap.next_beacon);
2893 sdata->u.ap.next_beacon = NULL;
2894
2895 if (err < 0)
2896 return err;
2897 *changed |= err;
2898 break;
2899 case NL80211_IFTYPE_ADHOC:
2900 err = ieee80211_ibss_finish_csa(sdata);
2901 if (err < 0)
2902 return err;
2903 *changed |= err;
2904 break;
2905 #ifdef CONFIG_MAC80211_MESH
2906 case NL80211_IFTYPE_MESH_POINT:
2907 err = ieee80211_mesh_finish_csa(sdata);
2908 if (err < 0)
2909 return err;
2910 *changed |= err;
2911 break;
2912 #endif
2913 default:
2914 WARN_ON(1);
2915 return -EINVAL;
2916 }
2917
2918 return 0;
2919 }
2920
2921 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2922 {
2923 struct ieee80211_local *local = sdata->local;
2924 u32 changed = 0;
2925 int err;
2926
2927 sdata_assert_lock(sdata);
2928 lockdep_assert_held(&local->mtx);
2929 lockdep_assert_held(&local->chanctx_mtx);
2930
2931 /*
2932 * using reservation isn't immediate as it may be deferred until later
2933 * with multi-vif. once reservation is complete it will re-schedule the
2934 * work with no reserved_chanctx so verify chandef to check if it
2935 * completed successfully
2936 */
2937
2938 if (sdata->reserved_chanctx) {
2939 /*
2940 * with multi-vif csa driver may call ieee80211_csa_finish()
2941 * many times while waiting for other interfaces to use their
2942 * reservations
2943 */
2944 if (sdata->reserved_ready)
2945 return 0;
2946
2947 return ieee80211_vif_use_reserved_context(sdata);
2948 }
2949
2950 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2951 &sdata->csa_chandef))
2952 return -EINVAL;
2953
2954 sdata->vif.csa_active = false;
2955
2956 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2957 if (err)
2958 return err;
2959
2960 ieee80211_bss_info_change_notify(sdata, changed);
2961
2962 if (sdata->csa_block_tx) {
2963 ieee80211_wake_vif_queues(local, sdata,
2964 IEEE80211_QUEUE_STOP_REASON_CSA);
2965 sdata->csa_block_tx = false;
2966 }
2967
2968 err = drv_post_channel_switch(sdata);
2969 if (err)
2970 return err;
2971
2972 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2973
2974 return 0;
2975 }
2976
2977 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2978 {
2979 if (__ieee80211_csa_finalize(sdata)) {
2980 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2981 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2982 GFP_KERNEL);
2983 }
2984 }
2985
2986 void ieee80211_csa_finalize_work(struct work_struct *work)
2987 {
2988 struct ieee80211_sub_if_data *sdata =
2989 container_of(work, struct ieee80211_sub_if_data,
2990 csa_finalize_work);
2991 struct ieee80211_local *local = sdata->local;
2992
2993 sdata_lock(sdata);
2994 mutex_lock(&local->mtx);
2995 mutex_lock(&local->chanctx_mtx);
2996
2997 /* AP might have been stopped while waiting for the lock. */
2998 if (!sdata->vif.csa_active)
2999 goto unlock;
3000
3001 if (!ieee80211_sdata_running(sdata))
3002 goto unlock;
3003
3004 ieee80211_csa_finalize(sdata);
3005
3006 unlock:
3007 mutex_unlock(&local->chanctx_mtx);
3008 mutex_unlock(&local->mtx);
3009 sdata_unlock(sdata);
3010 }
3011
3012 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3013 struct cfg80211_csa_settings *params,
3014 u32 *changed)
3015 {
3016 struct ieee80211_csa_settings csa = {};
3017 int err;
3018
3019 switch (sdata->vif.type) {
3020 case NL80211_IFTYPE_AP:
3021 sdata->u.ap.next_beacon =
3022 cfg80211_beacon_dup(&params->beacon_after);
3023 if (!sdata->u.ap.next_beacon)
3024 return -ENOMEM;
3025
3026 /*
3027 * With a count of 0, we don't have to wait for any
3028 * TBTT before switching, so complete the CSA
3029 * immediately. In theory, with a count == 1 we
3030 * should delay the switch until just before the next
3031 * TBTT, but that would complicate things so we switch
3032 * immediately too. If we would delay the switch
3033 * until the next TBTT, we would have to set the probe
3034 * response here.
3035 *
3036 * TODO: A channel switch with count <= 1 without
3037 * sending a CSA action frame is kind of useless,
3038 * because the clients won't know we're changing
3039 * channels. The action frame must be implemented
3040 * either here or in the userspace.
3041 */
3042 if (params->count <= 1)
3043 break;
3044
3045 if ((params->n_counter_offsets_beacon >
3046 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3047 (params->n_counter_offsets_presp >
3048 IEEE80211_MAX_CSA_COUNTERS_NUM))
3049 return -EINVAL;
3050
3051 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3052 csa.counter_offsets_presp = params->counter_offsets_presp;
3053 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3054 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3055 csa.count = params->count;
3056
3057 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3058 if (err < 0) {
3059 kfree(sdata->u.ap.next_beacon);
3060 return err;
3061 }
3062 *changed |= err;
3063
3064 break;
3065 case NL80211_IFTYPE_ADHOC:
3066 if (!sdata->vif.bss_conf.ibss_joined)
3067 return -EINVAL;
3068
3069 if (params->chandef.width != sdata->u.ibss.chandef.width)
3070 return -EINVAL;
3071
3072 switch (params->chandef.width) {
3073 case NL80211_CHAN_WIDTH_40:
3074 if (cfg80211_get_chandef_type(&params->chandef) !=
3075 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3076 return -EINVAL;
3077 case NL80211_CHAN_WIDTH_5:
3078 case NL80211_CHAN_WIDTH_10:
3079 case NL80211_CHAN_WIDTH_20_NOHT:
3080 case NL80211_CHAN_WIDTH_20:
3081 break;
3082 default:
3083 return -EINVAL;
3084 }
3085
3086 /* changes into another band are not supported */
3087 if (sdata->u.ibss.chandef.chan->band !=
3088 params->chandef.chan->band)
3089 return -EINVAL;
3090
3091 /* see comments in the NL80211_IFTYPE_AP block */
3092 if (params->count > 1) {
3093 err = ieee80211_ibss_csa_beacon(sdata, params);
3094 if (err < 0)
3095 return err;
3096 *changed |= err;
3097 }
3098
3099 ieee80211_send_action_csa(sdata, params);
3100
3101 break;
3102 #ifdef CONFIG_MAC80211_MESH
3103 case NL80211_IFTYPE_MESH_POINT: {
3104 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3105
3106 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3107 return -EINVAL;
3108
3109 /* changes into another band are not supported */
3110 if (sdata->vif.bss_conf.chandef.chan->band !=
3111 params->chandef.chan->band)
3112 return -EINVAL;
3113
3114 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3115 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3116 if (!ifmsh->pre_value)
3117 ifmsh->pre_value = 1;
3118 else
3119 ifmsh->pre_value++;
3120 }
3121
3122 /* see comments in the NL80211_IFTYPE_AP block */
3123 if (params->count > 1) {
3124 err = ieee80211_mesh_csa_beacon(sdata, params);
3125 if (err < 0) {
3126 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3127 return err;
3128 }
3129 *changed |= err;
3130 }
3131
3132 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3133 ieee80211_send_action_csa(sdata, params);
3134
3135 break;
3136 }
3137 #endif
3138 default:
3139 return -EOPNOTSUPP;
3140 }
3141
3142 return 0;
3143 }
3144
3145 static int
3146 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3147 struct cfg80211_csa_settings *params)
3148 {
3149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3150 struct ieee80211_local *local = sdata->local;
3151 struct ieee80211_channel_switch ch_switch;
3152 struct ieee80211_chanctx_conf *conf;
3153 struct ieee80211_chanctx *chanctx;
3154 u32 changed = 0;
3155 int err;
3156
3157 sdata_assert_lock(sdata);
3158 lockdep_assert_held(&local->mtx);
3159
3160 if (!list_empty(&local->roc_list) || local->scanning)
3161 return -EBUSY;
3162
3163 if (sdata->wdev.cac_started)
3164 return -EBUSY;
3165
3166 if (cfg80211_chandef_identical(&params->chandef,
3167 &sdata->vif.bss_conf.chandef))
3168 return -EINVAL;
3169
3170 /* don't allow another channel switch if one is already active. */
3171 if (sdata->vif.csa_active)
3172 return -EBUSY;
3173
3174 mutex_lock(&local->chanctx_mtx);
3175 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3176 lockdep_is_held(&local->chanctx_mtx));
3177 if (!conf) {
3178 err = -EBUSY;
3179 goto out;
3180 }
3181
3182 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3183 if (!chanctx) {
3184 err = -EBUSY;
3185 goto out;
3186 }
3187
3188 ch_switch.timestamp = 0;
3189 ch_switch.device_timestamp = 0;
3190 ch_switch.block_tx = params->block_tx;
3191 ch_switch.chandef = params->chandef;
3192 ch_switch.count = params->count;
3193
3194 err = drv_pre_channel_switch(sdata, &ch_switch);
3195 if (err)
3196 goto out;
3197
3198 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3199 chanctx->mode,
3200 params->radar_required);
3201 if (err)
3202 goto out;
3203
3204 /* if reservation is invalid then this will fail */
3205 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3206 if (err) {
3207 ieee80211_vif_unreserve_chanctx(sdata);
3208 goto out;
3209 }
3210
3211 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3212 if (err) {
3213 ieee80211_vif_unreserve_chanctx(sdata);
3214 goto out;
3215 }
3216
3217 sdata->csa_chandef = params->chandef;
3218 sdata->csa_block_tx = params->block_tx;
3219 sdata->vif.csa_active = true;
3220
3221 if (sdata->csa_block_tx)
3222 ieee80211_stop_vif_queues(local, sdata,
3223 IEEE80211_QUEUE_STOP_REASON_CSA);
3224
3225 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3226 params->count);
3227
3228 if (changed) {
3229 ieee80211_bss_info_change_notify(sdata, changed);
3230 drv_channel_switch_beacon(sdata, &params->chandef);
3231 } else {
3232 /* if the beacon didn't change, we can finalize immediately */
3233 ieee80211_csa_finalize(sdata);
3234 }
3235
3236 out:
3237 mutex_unlock(&local->chanctx_mtx);
3238 return err;
3239 }
3240
3241 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3242 struct cfg80211_csa_settings *params)
3243 {
3244 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3245 struct ieee80211_local *local = sdata->local;
3246 int err;
3247
3248 mutex_lock(&local->mtx);
3249 err = __ieee80211_channel_switch(wiphy, dev, params);
3250 mutex_unlock(&local->mtx);
3251
3252 return err;
3253 }
3254
3255 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3256 struct sk_buff *skb, u64 *cookie,
3257 gfp_t gfp)
3258 {
3259 unsigned long spin_flags;
3260 struct sk_buff *ack_skb;
3261 int id;
3262
3263 ack_skb = skb_copy(skb, gfp);
3264 if (!ack_skb)
3265 return ERR_PTR(-ENOMEM);
3266
3267 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3268 id = idr_alloc(&local->ack_status_frames, ack_skb,
3269 1, 0x10000, GFP_ATOMIC);
3270 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3271
3272 if (id < 0) {
3273 kfree_skb(ack_skb);
3274 return ERR_PTR(-ENOMEM);
3275 }
3276
3277 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3278
3279 *cookie = ieee80211_mgmt_tx_cookie(local);
3280 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3281
3282 return ack_skb;
3283 }
3284
3285 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3286 struct cfg80211_mgmt_tx_params *params,
3287 u64 *cookie)
3288 {
3289 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3290 struct ieee80211_local *local = sdata->local;
3291 struct sk_buff *skb, *ack_skb;
3292 struct sta_info *sta;
3293 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3294 bool need_offchan = false;
3295 u32 flags;
3296 int ret;
3297 u8 *data;
3298
3299 if (params->dont_wait_for_ack)
3300 flags = IEEE80211_TX_CTL_NO_ACK;
3301 else
3302 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3303 IEEE80211_TX_CTL_REQ_TX_STATUS;
3304
3305 if (params->no_cck)
3306 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3307
3308 switch (sdata->vif.type) {
3309 case NL80211_IFTYPE_ADHOC:
3310 if (!sdata->vif.bss_conf.ibss_joined)
3311 need_offchan = true;
3312 /* fall through */
3313 #ifdef CONFIG_MAC80211_MESH
3314 case NL80211_IFTYPE_MESH_POINT:
3315 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3316 !sdata->u.mesh.mesh_id_len)
3317 need_offchan = true;
3318 /* fall through */
3319 #endif
3320 case NL80211_IFTYPE_AP:
3321 case NL80211_IFTYPE_AP_VLAN:
3322 case NL80211_IFTYPE_P2P_GO:
3323 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3324 !ieee80211_vif_is_mesh(&sdata->vif) &&
3325 !rcu_access_pointer(sdata->bss->beacon))
3326 need_offchan = true;
3327 if (!ieee80211_is_action(mgmt->frame_control) ||
3328 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3329 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3330 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3331 break;
3332 rcu_read_lock();
3333 sta = sta_info_get(sdata, mgmt->da);
3334 rcu_read_unlock();
3335 if (!sta)
3336 return -ENOLINK;
3337 break;
3338 case NL80211_IFTYPE_STATION:
3339 case NL80211_IFTYPE_P2P_CLIENT:
3340 sdata_lock(sdata);
3341 if (!sdata->u.mgd.associated ||
3342 (params->offchan && params->wait &&
3343 local->ops->remain_on_channel &&
3344 memcmp(sdata->u.mgd.associated->bssid,
3345 mgmt->bssid, ETH_ALEN)))
3346 need_offchan = true;
3347 sdata_unlock(sdata);
3348 break;
3349 case NL80211_IFTYPE_P2P_DEVICE:
3350 need_offchan = true;
3351 break;
3352 default:
3353 return -EOPNOTSUPP;
3354 }
3355
3356 /* configurations requiring offchan cannot work if no channel has been
3357 * specified
3358 */
3359 if (need_offchan && !params->chan)
3360 return -EINVAL;
3361
3362 mutex_lock(&local->mtx);
3363
3364 /* Check if the operating channel is the requested channel */
3365 if (!need_offchan) {
3366 struct ieee80211_chanctx_conf *chanctx_conf;
3367
3368 rcu_read_lock();
3369 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3370
3371 if (chanctx_conf) {
3372 need_offchan = params->chan &&
3373 (params->chan !=
3374 chanctx_conf->def.chan);
3375 } else if (!params->chan) {
3376 ret = -EINVAL;
3377 rcu_read_unlock();
3378 goto out_unlock;
3379 } else {
3380 need_offchan = true;
3381 }
3382 rcu_read_unlock();
3383 }
3384
3385 if (need_offchan && !params->offchan) {
3386 ret = -EBUSY;
3387 goto out_unlock;
3388 }
3389
3390 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3391 if (!skb) {
3392 ret = -ENOMEM;
3393 goto out_unlock;
3394 }
3395 skb_reserve(skb, local->hw.extra_tx_headroom);
3396
3397 data = skb_put(skb, params->len);
3398 memcpy(data, params->buf, params->len);
3399
3400 /* Update CSA counters */
3401 if (sdata->vif.csa_active &&
3402 (sdata->vif.type == NL80211_IFTYPE_AP ||
3403 sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3404 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3405 params->n_csa_offsets) {
3406 int i;
3407 struct beacon_data *beacon = NULL;
3408
3409 rcu_read_lock();
3410
3411 if (sdata->vif.type == NL80211_IFTYPE_AP)
3412 beacon = rcu_dereference(sdata->u.ap.beacon);
3413 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3414 beacon = rcu_dereference(sdata->u.ibss.presp);
3415 else if (ieee80211_vif_is_mesh(&sdata->vif))
3416 beacon = rcu_dereference(sdata->u.mesh.beacon);
3417
3418 if (beacon)
3419 for (i = 0; i < params->n_csa_offsets; i++)
3420 data[params->csa_offsets[i]] =
3421 beacon->csa_current_counter;
3422
3423 rcu_read_unlock();
3424 }
3425
3426 IEEE80211_SKB_CB(skb)->flags = flags;
3427
3428 skb->dev = sdata->dev;
3429
3430 if (!params->dont_wait_for_ack) {
3431 /* make a copy to preserve the frame contents
3432 * in case of encryption.
3433 */
3434 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3435 GFP_KERNEL);
3436 if (IS_ERR(ack_skb)) {
3437 ret = PTR_ERR(ack_skb);
3438 kfree_skb(skb);
3439 goto out_unlock;
3440 }
3441 } else {
3442 /* for cookie below */
3443 ack_skb = skb;
3444 }
3445
3446 if (!need_offchan) {
3447 ieee80211_tx_skb(sdata, skb);
3448 ret = 0;
3449 goto out_unlock;
3450 }
3451
3452 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3453 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3454 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3455 IEEE80211_SKB_CB(skb)->hw_queue =
3456 local->hw.offchannel_tx_hw_queue;
3457
3458 /* This will handle all kinds of coalescing and immediate TX */
3459 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3460 params->wait, cookie, skb,
3461 IEEE80211_ROC_TYPE_MGMT_TX);
3462 if (ret)
3463 kfree_skb(skb);
3464 out_unlock:
3465 mutex_unlock(&local->mtx);
3466 return ret;
3467 }
3468
3469 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3470 struct wireless_dev *wdev,
3471 u64 cookie)
3472 {
3473 struct ieee80211_local *local = wiphy_priv(wiphy);
3474
3475 return ieee80211_cancel_roc(local, cookie, true);
3476 }
3477
3478 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3479 struct wireless_dev *wdev,
3480 u16 frame_type, bool reg)
3481 {
3482 struct ieee80211_local *local = wiphy_priv(wiphy);
3483
3484 switch (frame_type) {
3485 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3486 if (reg)
3487 local->probe_req_reg++;
3488 else
3489 local->probe_req_reg--;
3490
3491 if (!local->open_count)
3492 break;
3493
3494 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3495 break;
3496 default:
3497 break;
3498 }
3499 }
3500
3501 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3502 {
3503 struct ieee80211_local *local = wiphy_priv(wiphy);
3504
3505 if (local->started)
3506 return -EOPNOTSUPP;
3507
3508 return drv_set_antenna(local, tx_ant, rx_ant);
3509 }
3510
3511 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3512 {
3513 struct ieee80211_local *local = wiphy_priv(wiphy);
3514
3515 return drv_get_antenna(local, tx_ant, rx_ant);
3516 }
3517
3518 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3519 struct net_device *dev,
3520 struct cfg80211_gtk_rekey_data *data)
3521 {
3522 struct ieee80211_local *local = wiphy_priv(wiphy);
3523 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3524
3525 if (!local->ops->set_rekey_data)
3526 return -EOPNOTSUPP;
3527
3528 drv_set_rekey_data(local, sdata, data);
3529
3530 return 0;
3531 }
3532
3533 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3534 const u8 *peer, u64 *cookie)
3535 {
3536 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3537 struct ieee80211_local *local = sdata->local;
3538 struct ieee80211_qos_hdr *nullfunc;
3539 struct sk_buff *skb, *ack_skb;
3540 int size = sizeof(*nullfunc);
3541 __le16 fc;
3542 bool qos;
3543 struct ieee80211_tx_info *info;
3544 struct sta_info *sta;
3545 struct ieee80211_chanctx_conf *chanctx_conf;
3546 enum ieee80211_band band;
3547 int ret;
3548
3549 /* the lock is needed to assign the cookie later */
3550 mutex_lock(&local->mtx);
3551
3552 rcu_read_lock();
3553 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3554 if (WARN_ON(!chanctx_conf)) {
3555 ret = -EINVAL;
3556 goto unlock;
3557 }
3558 band = chanctx_conf->def.chan->band;
3559 sta = sta_info_get_bss(sdata, peer);
3560 if (sta) {
3561 qos = sta->sta.wme;
3562 } else {
3563 ret = -ENOLINK;
3564 goto unlock;
3565 }
3566
3567 if (qos) {
3568 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3569 IEEE80211_STYPE_QOS_NULLFUNC |
3570 IEEE80211_FCTL_FROMDS);
3571 } else {
3572 size -= 2;
3573 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3574 IEEE80211_STYPE_NULLFUNC |
3575 IEEE80211_FCTL_FROMDS);
3576 }
3577
3578 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3579 if (!skb) {
3580 ret = -ENOMEM;
3581 goto unlock;
3582 }
3583
3584 skb->dev = dev;
3585
3586 skb_reserve(skb, local->hw.extra_tx_headroom);
3587
3588 nullfunc = (void *) skb_put(skb, size);
3589 nullfunc->frame_control = fc;
3590 nullfunc->duration_id = 0;
3591 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3592 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3593 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3594 nullfunc->seq_ctrl = 0;
3595
3596 info = IEEE80211_SKB_CB(skb);
3597
3598 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3599 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3600 info->band = band;
3601
3602 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3603 skb->priority = 7;
3604 if (qos)
3605 nullfunc->qos_ctrl = cpu_to_le16(7);
3606
3607 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3608 if (IS_ERR(ack_skb)) {
3609 kfree_skb(skb);
3610 ret = PTR_ERR(ack_skb);
3611 goto unlock;
3612 }
3613
3614 local_bh_disable();
3615 ieee80211_xmit(sdata, sta, skb);
3616 local_bh_enable();
3617
3618 ret = 0;
3619 unlock:
3620 rcu_read_unlock();
3621 mutex_unlock(&local->mtx);
3622
3623 return ret;
3624 }
3625
3626 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3627 struct wireless_dev *wdev,
3628 struct cfg80211_chan_def *chandef)
3629 {
3630 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3631 struct ieee80211_local *local = wiphy_priv(wiphy);
3632 struct ieee80211_chanctx_conf *chanctx_conf;
3633 int ret = -ENODATA;
3634
3635 rcu_read_lock();
3636 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3637 if (chanctx_conf) {
3638 *chandef = sdata->vif.bss_conf.chandef;
3639 ret = 0;
3640 } else if (local->open_count > 0 &&
3641 local->open_count == local->monitors &&
3642 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3643 if (local->use_chanctx)
3644 *chandef = local->monitor_chandef;
3645 else
3646 *chandef = local->_oper_chandef;
3647 ret = 0;
3648 }
3649 rcu_read_unlock();
3650
3651 return ret;
3652 }
3653
3654 #ifdef CONFIG_PM
3655 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3656 {
3657 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3658 }
3659 #endif
3660
3661 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3662 struct net_device *dev,
3663 struct cfg80211_qos_map *qos_map)
3664 {
3665 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3666 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3667
3668 if (qos_map) {
3669 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3670 if (!new_qos_map)
3671 return -ENOMEM;
3672 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3673 } else {
3674 /* A NULL qos_map was passed to disable QoS mapping */
3675 new_qos_map = NULL;
3676 }
3677
3678 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3679 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3680 if (old_qos_map)
3681 kfree_rcu(old_qos_map, rcu_head);
3682
3683 return 0;
3684 }
3685
3686 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3687 struct net_device *dev,
3688 struct cfg80211_chan_def *chandef)
3689 {
3690 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3691 int ret;
3692 u32 changed = 0;
3693
3694 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3695 if (ret == 0)
3696 ieee80211_bss_info_change_notify(sdata, changed);
3697
3698 return ret;
3699 }
3700
3701 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3702 u8 tsid, const u8 *peer, u8 up,
3703 u16 admitted_time)
3704 {
3705 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3706 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3707 int ac = ieee802_1d_to_ac[up];
3708
3709 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3710 return -EOPNOTSUPP;
3711
3712 if (!(sdata->wmm_acm & BIT(up)))
3713 return -EINVAL;
3714
3715 if (ifmgd->tx_tspec[ac].admitted_time)
3716 return -EBUSY;
3717
3718 if (admitted_time) {
3719 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3720 ifmgd->tx_tspec[ac].tsid = tsid;
3721 ifmgd->tx_tspec[ac].up = up;
3722 }
3723
3724 return 0;
3725 }
3726
3727 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3728 u8 tsid, const u8 *peer)
3729 {
3730 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3731 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3732 struct ieee80211_local *local = wiphy_priv(wiphy);
3733 int ac;
3734
3735 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3736 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3737
3738 /* skip unused entries */
3739 if (!tx_tspec->admitted_time)
3740 continue;
3741
3742 if (tx_tspec->tsid != tsid)
3743 continue;
3744
3745 /* due to this new packets will be reassigned to non-ACM ACs */
3746 tx_tspec->up = -1;
3747
3748 /* Make sure that all packets have been sent to avoid to
3749 * restore the QoS params on packets that are still on the
3750 * queues.
3751 */
3752 synchronize_net();
3753 ieee80211_flush_queues(local, sdata, false);
3754
3755 /* restore the normal QoS parameters
3756 * (unconditionally to avoid races)
3757 */
3758 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3759 tx_tspec->downgraded = false;
3760 ieee80211_sta_handle_tspec_ac_params(sdata);
3761
3762 /* finally clear all the data */
3763 memset(tx_tspec, 0, sizeof(*tx_tspec));
3764
3765 return 0;
3766 }
3767
3768 return -ENOENT;
3769 }
3770
3771 const struct cfg80211_ops mac80211_config_ops = {
3772 .add_virtual_intf = ieee80211_add_iface,
3773 .del_virtual_intf = ieee80211_del_iface,
3774 .change_virtual_intf = ieee80211_change_iface,
3775 .start_p2p_device = ieee80211_start_p2p_device,
3776 .stop_p2p_device = ieee80211_stop_p2p_device,
3777 .add_key = ieee80211_add_key,
3778 .del_key = ieee80211_del_key,
3779 .get_key = ieee80211_get_key,
3780 .set_default_key = ieee80211_config_default_key,
3781 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3782 .start_ap = ieee80211_start_ap,
3783 .change_beacon = ieee80211_change_beacon,
3784 .stop_ap = ieee80211_stop_ap,
3785 .add_station = ieee80211_add_station,
3786 .del_station = ieee80211_del_station,
3787 .change_station = ieee80211_change_station,
3788 .get_station = ieee80211_get_station,
3789 .dump_station = ieee80211_dump_station,
3790 .dump_survey = ieee80211_dump_survey,
3791 #ifdef CONFIG_MAC80211_MESH
3792 .add_mpath = ieee80211_add_mpath,
3793 .del_mpath = ieee80211_del_mpath,
3794 .change_mpath = ieee80211_change_mpath,
3795 .get_mpath = ieee80211_get_mpath,
3796 .dump_mpath = ieee80211_dump_mpath,
3797 .get_mpp = ieee80211_get_mpp,
3798 .dump_mpp = ieee80211_dump_mpp,
3799 .update_mesh_config = ieee80211_update_mesh_config,
3800 .get_mesh_config = ieee80211_get_mesh_config,
3801 .join_mesh = ieee80211_join_mesh,
3802 .leave_mesh = ieee80211_leave_mesh,
3803 #endif
3804 .join_ocb = ieee80211_join_ocb,
3805 .leave_ocb = ieee80211_leave_ocb,
3806 .change_bss = ieee80211_change_bss,
3807 .set_txq_params = ieee80211_set_txq_params,
3808 .set_monitor_channel = ieee80211_set_monitor_channel,
3809 .suspend = ieee80211_suspend,
3810 .resume = ieee80211_resume,
3811 .scan = ieee80211_scan,
3812 .sched_scan_start = ieee80211_sched_scan_start,
3813 .sched_scan_stop = ieee80211_sched_scan_stop,
3814 .auth = ieee80211_auth,
3815 .assoc = ieee80211_assoc,
3816 .deauth = ieee80211_deauth,
3817 .disassoc = ieee80211_disassoc,
3818 .join_ibss = ieee80211_join_ibss,
3819 .leave_ibss = ieee80211_leave_ibss,
3820 .set_mcast_rate = ieee80211_set_mcast_rate,
3821 .set_wiphy_params = ieee80211_set_wiphy_params,
3822 .set_tx_power = ieee80211_set_tx_power,
3823 .get_tx_power = ieee80211_get_tx_power,
3824 .set_wds_peer = ieee80211_set_wds_peer,
3825 .rfkill_poll = ieee80211_rfkill_poll,
3826 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3827 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3828 .set_power_mgmt = ieee80211_set_power_mgmt,
3829 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3830 .remain_on_channel = ieee80211_remain_on_channel,
3831 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3832 .mgmt_tx = ieee80211_mgmt_tx,
3833 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3834 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3835 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3836 .set_antenna = ieee80211_set_antenna,
3837 .get_antenna = ieee80211_get_antenna,
3838 .set_rekey_data = ieee80211_set_rekey_data,
3839 .tdls_oper = ieee80211_tdls_oper,
3840 .tdls_mgmt = ieee80211_tdls_mgmt,
3841 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3842 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3843 .probe_client = ieee80211_probe_client,
3844 .set_noack_map = ieee80211_set_noack_map,
3845 #ifdef CONFIG_PM
3846 .set_wakeup = ieee80211_set_wakeup,
3847 #endif
3848 .get_channel = ieee80211_cfg_get_channel,
3849 .start_radar_detection = ieee80211_start_radar_detection,
3850 .channel_switch = ieee80211_channel_switch,
3851 .set_qos_map = ieee80211_set_qos_map,
3852 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3853 .add_tx_ts = ieee80211_add_tx_ts,
3854 .del_tx_ts = ieee80211_del_tx_ts,
3855 };
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