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mac80211: move mesh related station fields to own struct
[deliverable/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2015 Intel Mobile Communications GmbH
6 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "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 if (set & BIT(NL80211_STA_FLAG_MFP))
1080 set_sta_flag(sta, WLAN_STA_MFP);
1081 else
1082 clear_sta_flag(sta, WLAN_STA_MFP);
1083 }
1084
1085 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1086 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1087 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1088 else
1089 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1090 }
1091
1092 /* mark TDLS channel switch support, if the AP allows it */
1093 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1094 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1095 params->ext_capab_len >= 4 &&
1096 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1097 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1098
1099 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1100 sta->sta.uapsd_queues = params->uapsd_queues;
1101 sta->sta.max_sp = params->max_sp;
1102 }
1103
1104 /*
1105 * cfg80211 validates this (1-2007) and allows setting the AID
1106 * only when creating a new station entry
1107 */
1108 if (params->aid)
1109 sta->sta.aid = params->aid;
1110
1111 /*
1112 * Some of the following updates would be racy if called on an
1113 * existing station, via ieee80211_change_station(). However,
1114 * all such changes are rejected by cfg80211 except for updates
1115 * changing the supported rates on an existing but not yet used
1116 * TDLS peer.
1117 */
1118
1119 if (params->listen_interval >= 0)
1120 sta->listen_interval = params->listen_interval;
1121
1122 if (params->supported_rates) {
1123 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1124 sband, params->supported_rates,
1125 params->supported_rates_len,
1126 &sta->sta.supp_rates[band]);
1127 }
1128
1129 if (params->ht_capa)
1130 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1131 params->ht_capa, sta);
1132
1133 if (params->vht_capa)
1134 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1135 params->vht_capa, sta);
1136
1137 if (params->opmode_notif_used) {
1138 /* returned value is only needed for rc update, but the
1139 * rc isn't initialized here yet, so ignore it
1140 */
1141 __ieee80211_vht_handle_opmode(sdata, sta,
1142 params->opmode_notif,
1143 band, false);
1144 }
1145
1146 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1147 #ifdef CONFIG_MAC80211_MESH
1148 u32 changed = 0;
1149
1150 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1151 switch (params->plink_state) {
1152 case NL80211_PLINK_ESTAB:
1153 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1154 changed = mesh_plink_inc_estab_count(
1155 sdata);
1156 sta->mesh->plink_state = params->plink_state;
1157
1158 ieee80211_mps_sta_status_update(sta);
1159 changed |= ieee80211_mps_set_sta_local_pm(sta,
1160 sdata->u.mesh.mshcfg.power_mode);
1161 break;
1162 case NL80211_PLINK_LISTEN:
1163 case NL80211_PLINK_BLOCKED:
1164 case NL80211_PLINK_OPN_SNT:
1165 case NL80211_PLINK_OPN_RCVD:
1166 case NL80211_PLINK_CNF_RCVD:
1167 case NL80211_PLINK_HOLDING:
1168 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1169 changed = mesh_plink_dec_estab_count(
1170 sdata);
1171 sta->mesh->plink_state = params->plink_state;
1172
1173 ieee80211_mps_sta_status_update(sta);
1174 changed |= ieee80211_mps_set_sta_local_pm(sta,
1175 NL80211_MESH_POWER_UNKNOWN);
1176 break;
1177 default:
1178 /* nothing */
1179 break;
1180 }
1181 }
1182
1183 switch (params->plink_action) {
1184 case NL80211_PLINK_ACTION_NO_ACTION:
1185 /* nothing */
1186 break;
1187 case NL80211_PLINK_ACTION_OPEN:
1188 changed |= mesh_plink_open(sta);
1189 break;
1190 case NL80211_PLINK_ACTION_BLOCK:
1191 changed |= mesh_plink_block(sta);
1192 break;
1193 }
1194
1195 if (params->local_pm)
1196 changed |=
1197 ieee80211_mps_set_sta_local_pm(sta,
1198 params->local_pm);
1199 ieee80211_mbss_info_change_notify(sdata, changed);
1200 #endif
1201 }
1202
1203 /* set the STA state after all sta info from usermode has been set */
1204 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1205 ret = sta_apply_auth_flags(local, sta, mask, set);
1206 if (ret)
1207 return ret;
1208 }
1209
1210 return 0;
1211 }
1212
1213 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1214 const u8 *mac,
1215 struct station_parameters *params)
1216 {
1217 struct ieee80211_local *local = wiphy_priv(wiphy);
1218 struct sta_info *sta;
1219 struct ieee80211_sub_if_data *sdata;
1220 int err;
1221 int layer2_update;
1222
1223 if (params->vlan) {
1224 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1225
1226 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1227 sdata->vif.type != NL80211_IFTYPE_AP)
1228 return -EINVAL;
1229 } else
1230 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1231
1232 if (ether_addr_equal(mac, sdata->vif.addr))
1233 return -EINVAL;
1234
1235 if (is_multicast_ether_addr(mac))
1236 return -EINVAL;
1237
1238 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1239 if (!sta)
1240 return -ENOMEM;
1241
1242 /*
1243 * defaults -- if userspace wants something else we'll
1244 * change it accordingly in sta_apply_parameters()
1245 */
1246 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1247 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1248 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1249 } else {
1250 sta->sta.tdls = true;
1251 }
1252
1253 err = sta_apply_parameters(local, sta, params);
1254 if (err) {
1255 sta_info_free(local, sta);
1256 return err;
1257 }
1258
1259 /*
1260 * for TDLS, rate control should be initialized only when
1261 * rates are known and station is marked authorized
1262 */
1263 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1264 rate_control_rate_init(sta);
1265
1266 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1267 sdata->vif.type == NL80211_IFTYPE_AP;
1268
1269 err = sta_info_insert_rcu(sta);
1270 if (err) {
1271 rcu_read_unlock();
1272 return err;
1273 }
1274
1275 if (layer2_update)
1276 ieee80211_send_layer2_update(sta);
1277
1278 rcu_read_unlock();
1279
1280 return 0;
1281 }
1282
1283 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1284 struct station_del_parameters *params)
1285 {
1286 struct ieee80211_sub_if_data *sdata;
1287
1288 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1289
1290 if (params->mac)
1291 return sta_info_destroy_addr_bss(sdata, params->mac);
1292
1293 sta_info_flush(sdata);
1294 return 0;
1295 }
1296
1297 static int ieee80211_change_station(struct wiphy *wiphy,
1298 struct net_device *dev, const u8 *mac,
1299 struct station_parameters *params)
1300 {
1301 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1302 struct ieee80211_local *local = wiphy_priv(wiphy);
1303 struct sta_info *sta;
1304 struct ieee80211_sub_if_data *vlansdata;
1305 enum cfg80211_station_type statype;
1306 int err;
1307
1308 mutex_lock(&local->sta_mtx);
1309
1310 sta = sta_info_get_bss(sdata, mac);
1311 if (!sta) {
1312 err = -ENOENT;
1313 goto out_err;
1314 }
1315
1316 switch (sdata->vif.type) {
1317 case NL80211_IFTYPE_MESH_POINT:
1318 if (sdata->u.mesh.user_mpm)
1319 statype = CFG80211_STA_MESH_PEER_USER;
1320 else
1321 statype = CFG80211_STA_MESH_PEER_KERNEL;
1322 break;
1323 case NL80211_IFTYPE_ADHOC:
1324 statype = CFG80211_STA_IBSS;
1325 break;
1326 case NL80211_IFTYPE_STATION:
1327 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1328 statype = CFG80211_STA_AP_STA;
1329 break;
1330 }
1331 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1332 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1333 else
1334 statype = CFG80211_STA_TDLS_PEER_SETUP;
1335 break;
1336 case NL80211_IFTYPE_AP:
1337 case NL80211_IFTYPE_AP_VLAN:
1338 statype = CFG80211_STA_AP_CLIENT;
1339 break;
1340 default:
1341 err = -EOPNOTSUPP;
1342 goto out_err;
1343 }
1344
1345 err = cfg80211_check_station_change(wiphy, params, statype);
1346 if (err)
1347 goto out_err;
1348
1349 if (params->vlan && params->vlan != sta->sdata->dev) {
1350 bool prev_4addr = false;
1351 bool new_4addr = false;
1352
1353 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1354
1355 if (params->vlan->ieee80211_ptr->use_4addr) {
1356 if (vlansdata->u.vlan.sta) {
1357 err = -EBUSY;
1358 goto out_err;
1359 }
1360
1361 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1362 new_4addr = true;
1363 }
1364
1365 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1366 sta->sdata->u.vlan.sta) {
1367 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1368 prev_4addr = true;
1369 }
1370
1371 sta->sdata = vlansdata;
1372 ieee80211_check_fast_xmit(sta);
1373
1374 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1375 prev_4addr != new_4addr) {
1376 if (new_4addr)
1377 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1378 else
1379 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1380 }
1381
1382 ieee80211_send_layer2_update(sta);
1383 }
1384
1385 err = sta_apply_parameters(local, sta, params);
1386 if (err)
1387 goto out_err;
1388
1389 mutex_unlock(&local->sta_mtx);
1390
1391 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1392 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1393 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1394 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1395 sta_info_tx_streams(sta) != 1) {
1396 ht_dbg(sta->sdata,
1397 "%pM just authorized and MIMO capable - update SMPS\n",
1398 sta->sta.addr);
1399 ieee80211_send_smps_action(sta->sdata,
1400 sta->sdata->bss->req_smps,
1401 sta->sta.addr,
1402 sta->sdata->vif.bss_conf.bssid);
1403 }
1404
1405 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1406 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1407 ieee80211_recalc_ps(local, -1);
1408 ieee80211_recalc_ps_vif(sdata);
1409 }
1410
1411 return 0;
1412 out_err:
1413 mutex_unlock(&local->sta_mtx);
1414 return err;
1415 }
1416
1417 #ifdef CONFIG_MAC80211_MESH
1418 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1419 const u8 *dst, const u8 *next_hop)
1420 {
1421 struct ieee80211_sub_if_data *sdata;
1422 struct mesh_path *mpath;
1423 struct sta_info *sta;
1424
1425 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1426
1427 rcu_read_lock();
1428 sta = sta_info_get(sdata, next_hop);
1429 if (!sta) {
1430 rcu_read_unlock();
1431 return -ENOENT;
1432 }
1433
1434 mpath = mesh_path_add(sdata, dst);
1435 if (IS_ERR(mpath)) {
1436 rcu_read_unlock();
1437 return PTR_ERR(mpath);
1438 }
1439
1440 mesh_path_fix_nexthop(mpath, sta);
1441
1442 rcu_read_unlock();
1443 return 0;
1444 }
1445
1446 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1447 const u8 *dst)
1448 {
1449 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1450
1451 if (dst)
1452 return mesh_path_del(sdata, dst);
1453
1454 mesh_path_flush_by_iface(sdata);
1455 return 0;
1456 }
1457
1458 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1459 const u8 *dst, const u8 *next_hop)
1460 {
1461 struct ieee80211_sub_if_data *sdata;
1462 struct mesh_path *mpath;
1463 struct sta_info *sta;
1464
1465 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1466
1467 rcu_read_lock();
1468
1469 sta = sta_info_get(sdata, next_hop);
1470 if (!sta) {
1471 rcu_read_unlock();
1472 return -ENOENT;
1473 }
1474
1475 mpath = mesh_path_lookup(sdata, dst);
1476 if (!mpath) {
1477 rcu_read_unlock();
1478 return -ENOENT;
1479 }
1480
1481 mesh_path_fix_nexthop(mpath, sta);
1482
1483 rcu_read_unlock();
1484 return 0;
1485 }
1486
1487 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1488 struct mpath_info *pinfo)
1489 {
1490 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1491
1492 if (next_hop_sta)
1493 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1494 else
1495 eth_zero_addr(next_hop);
1496
1497 memset(pinfo, 0, sizeof(*pinfo));
1498
1499 pinfo->generation = mesh_paths_generation;
1500
1501 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1502 MPATH_INFO_SN |
1503 MPATH_INFO_METRIC |
1504 MPATH_INFO_EXPTIME |
1505 MPATH_INFO_DISCOVERY_TIMEOUT |
1506 MPATH_INFO_DISCOVERY_RETRIES |
1507 MPATH_INFO_FLAGS;
1508
1509 pinfo->frame_qlen = mpath->frame_queue.qlen;
1510 pinfo->sn = mpath->sn;
1511 pinfo->metric = mpath->metric;
1512 if (time_before(jiffies, mpath->exp_time))
1513 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1514 pinfo->discovery_timeout =
1515 jiffies_to_msecs(mpath->discovery_timeout);
1516 pinfo->discovery_retries = mpath->discovery_retries;
1517 if (mpath->flags & MESH_PATH_ACTIVE)
1518 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1519 if (mpath->flags & MESH_PATH_RESOLVING)
1520 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1521 if (mpath->flags & MESH_PATH_SN_VALID)
1522 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1523 if (mpath->flags & MESH_PATH_FIXED)
1524 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1525 if (mpath->flags & MESH_PATH_RESOLVED)
1526 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1527 }
1528
1529 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1530 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1531
1532 {
1533 struct ieee80211_sub_if_data *sdata;
1534 struct mesh_path *mpath;
1535
1536 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1537
1538 rcu_read_lock();
1539 mpath = mesh_path_lookup(sdata, dst);
1540 if (!mpath) {
1541 rcu_read_unlock();
1542 return -ENOENT;
1543 }
1544 memcpy(dst, mpath->dst, ETH_ALEN);
1545 mpath_set_pinfo(mpath, next_hop, pinfo);
1546 rcu_read_unlock();
1547 return 0;
1548 }
1549
1550 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1551 int idx, u8 *dst, u8 *next_hop,
1552 struct mpath_info *pinfo)
1553 {
1554 struct ieee80211_sub_if_data *sdata;
1555 struct mesh_path *mpath;
1556
1557 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1558
1559 rcu_read_lock();
1560 mpath = mesh_path_lookup_by_idx(sdata, idx);
1561 if (!mpath) {
1562 rcu_read_unlock();
1563 return -ENOENT;
1564 }
1565 memcpy(dst, mpath->dst, ETH_ALEN);
1566 mpath_set_pinfo(mpath, next_hop, pinfo);
1567 rcu_read_unlock();
1568 return 0;
1569 }
1570
1571 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1572 struct mpath_info *pinfo)
1573 {
1574 memset(pinfo, 0, sizeof(*pinfo));
1575 memcpy(mpp, mpath->mpp, ETH_ALEN);
1576
1577 pinfo->generation = mpp_paths_generation;
1578 }
1579
1580 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1581 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1582
1583 {
1584 struct ieee80211_sub_if_data *sdata;
1585 struct mesh_path *mpath;
1586
1587 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1588
1589 rcu_read_lock();
1590 mpath = mpp_path_lookup(sdata, dst);
1591 if (!mpath) {
1592 rcu_read_unlock();
1593 return -ENOENT;
1594 }
1595 memcpy(dst, mpath->dst, ETH_ALEN);
1596 mpp_set_pinfo(mpath, mpp, pinfo);
1597 rcu_read_unlock();
1598 return 0;
1599 }
1600
1601 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1602 int idx, u8 *dst, u8 *mpp,
1603 struct mpath_info *pinfo)
1604 {
1605 struct ieee80211_sub_if_data *sdata;
1606 struct mesh_path *mpath;
1607
1608 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610 rcu_read_lock();
1611 mpath = mpp_path_lookup_by_idx(sdata, idx);
1612 if (!mpath) {
1613 rcu_read_unlock();
1614 return -ENOENT;
1615 }
1616 memcpy(dst, mpath->dst, ETH_ALEN);
1617 mpp_set_pinfo(mpath, mpp, pinfo);
1618 rcu_read_unlock();
1619 return 0;
1620 }
1621
1622 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1623 struct net_device *dev,
1624 struct mesh_config *conf)
1625 {
1626 struct ieee80211_sub_if_data *sdata;
1627 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1628
1629 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1630 return 0;
1631 }
1632
1633 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1634 {
1635 return (mask >> (parm-1)) & 0x1;
1636 }
1637
1638 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1639 const struct mesh_setup *setup)
1640 {
1641 u8 *new_ie;
1642 const u8 *old_ie;
1643 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1644 struct ieee80211_sub_if_data, u.mesh);
1645
1646 /* allocate information elements */
1647 new_ie = NULL;
1648 old_ie = ifmsh->ie;
1649
1650 if (setup->ie_len) {
1651 new_ie = kmemdup(setup->ie, setup->ie_len,
1652 GFP_KERNEL);
1653 if (!new_ie)
1654 return -ENOMEM;
1655 }
1656 ifmsh->ie_len = setup->ie_len;
1657 ifmsh->ie = new_ie;
1658 kfree(old_ie);
1659
1660 /* now copy the rest of the setup parameters */
1661 ifmsh->mesh_id_len = setup->mesh_id_len;
1662 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1663 ifmsh->mesh_sp_id = setup->sync_method;
1664 ifmsh->mesh_pp_id = setup->path_sel_proto;
1665 ifmsh->mesh_pm_id = setup->path_metric;
1666 ifmsh->user_mpm = setup->user_mpm;
1667 ifmsh->mesh_auth_id = setup->auth_id;
1668 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1669 if (setup->is_authenticated)
1670 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1671 if (setup->is_secure)
1672 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1673
1674 /* mcast rate setting in Mesh Node */
1675 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1676 sizeof(setup->mcast_rate));
1677 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1678
1679 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1680 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1681
1682 return 0;
1683 }
1684
1685 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1686 struct net_device *dev, u32 mask,
1687 const struct mesh_config *nconf)
1688 {
1689 struct mesh_config *conf;
1690 struct ieee80211_sub_if_data *sdata;
1691 struct ieee80211_if_mesh *ifmsh;
1692
1693 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1694 ifmsh = &sdata->u.mesh;
1695
1696 /* Set the config options which we are interested in setting */
1697 conf = &(sdata->u.mesh.mshcfg);
1698 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1699 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1700 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1701 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1702 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1703 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1704 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1705 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1706 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1707 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1708 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1709 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1710 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1711 conf->element_ttl = nconf->element_ttl;
1712 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1713 if (ifmsh->user_mpm)
1714 return -EBUSY;
1715 conf->auto_open_plinks = nconf->auto_open_plinks;
1716 }
1717 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1718 conf->dot11MeshNbrOffsetMaxNeighbor =
1719 nconf->dot11MeshNbrOffsetMaxNeighbor;
1720 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1721 conf->dot11MeshHWMPmaxPREQretries =
1722 nconf->dot11MeshHWMPmaxPREQretries;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1724 conf->path_refresh_time = nconf->path_refresh_time;
1725 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1726 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1727 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1728 conf->dot11MeshHWMPactivePathTimeout =
1729 nconf->dot11MeshHWMPactivePathTimeout;
1730 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1731 conf->dot11MeshHWMPpreqMinInterval =
1732 nconf->dot11MeshHWMPpreqMinInterval;
1733 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1734 conf->dot11MeshHWMPperrMinInterval =
1735 nconf->dot11MeshHWMPperrMinInterval;
1736 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1737 mask))
1738 conf->dot11MeshHWMPnetDiameterTraversalTime =
1739 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1740 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1741 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1742 ieee80211_mesh_root_setup(ifmsh);
1743 }
1744 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1745 /* our current gate announcement implementation rides on root
1746 * announcements, so require this ifmsh to also be a root node
1747 * */
1748 if (nconf->dot11MeshGateAnnouncementProtocol &&
1749 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1750 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1751 ieee80211_mesh_root_setup(ifmsh);
1752 }
1753 conf->dot11MeshGateAnnouncementProtocol =
1754 nconf->dot11MeshGateAnnouncementProtocol;
1755 }
1756 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1757 conf->dot11MeshHWMPRannInterval =
1758 nconf->dot11MeshHWMPRannInterval;
1759 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1760 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1761 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1762 /* our RSSI threshold implementation is supported only for
1763 * devices that report signal in dBm.
1764 */
1765 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1766 return -ENOTSUPP;
1767 conf->rssi_threshold = nconf->rssi_threshold;
1768 }
1769 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1770 conf->ht_opmode = nconf->ht_opmode;
1771 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1772 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1773 }
1774 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1775 conf->dot11MeshHWMPactivePathToRootTimeout =
1776 nconf->dot11MeshHWMPactivePathToRootTimeout;
1777 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1778 conf->dot11MeshHWMProotInterval =
1779 nconf->dot11MeshHWMProotInterval;
1780 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1781 conf->dot11MeshHWMPconfirmationInterval =
1782 nconf->dot11MeshHWMPconfirmationInterval;
1783 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1784 conf->power_mode = nconf->power_mode;
1785 ieee80211_mps_local_status_update(sdata);
1786 }
1787 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1788 conf->dot11MeshAwakeWindowDuration =
1789 nconf->dot11MeshAwakeWindowDuration;
1790 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1791 conf->plink_timeout = nconf->plink_timeout;
1792 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1793 return 0;
1794 }
1795
1796 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1797 const struct mesh_config *conf,
1798 const struct mesh_setup *setup)
1799 {
1800 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1801 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1802 int err;
1803
1804 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1805 err = copy_mesh_setup(ifmsh, setup);
1806 if (err)
1807 return err;
1808
1809 /* can mesh use other SMPS modes? */
1810 sdata->smps_mode = IEEE80211_SMPS_OFF;
1811 sdata->needed_rx_chains = sdata->local->rx_chains;
1812
1813 mutex_lock(&sdata->local->mtx);
1814 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1815 IEEE80211_CHANCTX_SHARED);
1816 mutex_unlock(&sdata->local->mtx);
1817 if (err)
1818 return err;
1819
1820 return ieee80211_start_mesh(sdata);
1821 }
1822
1823 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1824 {
1825 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1826
1827 ieee80211_stop_mesh(sdata);
1828 mutex_lock(&sdata->local->mtx);
1829 ieee80211_vif_release_channel(sdata);
1830 mutex_unlock(&sdata->local->mtx);
1831
1832 return 0;
1833 }
1834 #endif
1835
1836 static int ieee80211_change_bss(struct wiphy *wiphy,
1837 struct net_device *dev,
1838 struct bss_parameters *params)
1839 {
1840 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1841 enum ieee80211_band band;
1842 u32 changed = 0;
1843
1844 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1845 return -ENOENT;
1846
1847 band = ieee80211_get_sdata_band(sdata);
1848
1849 if (params->use_cts_prot >= 0) {
1850 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1851 changed |= BSS_CHANGED_ERP_CTS_PROT;
1852 }
1853 if (params->use_short_preamble >= 0) {
1854 sdata->vif.bss_conf.use_short_preamble =
1855 params->use_short_preamble;
1856 changed |= BSS_CHANGED_ERP_PREAMBLE;
1857 }
1858
1859 if (!sdata->vif.bss_conf.use_short_slot &&
1860 band == IEEE80211_BAND_5GHZ) {
1861 sdata->vif.bss_conf.use_short_slot = true;
1862 changed |= BSS_CHANGED_ERP_SLOT;
1863 }
1864
1865 if (params->use_short_slot_time >= 0) {
1866 sdata->vif.bss_conf.use_short_slot =
1867 params->use_short_slot_time;
1868 changed |= BSS_CHANGED_ERP_SLOT;
1869 }
1870
1871 if (params->basic_rates) {
1872 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1873 wiphy->bands[band],
1874 params->basic_rates,
1875 params->basic_rates_len,
1876 &sdata->vif.bss_conf.basic_rates);
1877 changed |= BSS_CHANGED_BASIC_RATES;
1878 }
1879
1880 if (params->ap_isolate >= 0) {
1881 if (params->ap_isolate)
1882 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1883 else
1884 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1885 }
1886
1887 if (params->ht_opmode >= 0) {
1888 sdata->vif.bss_conf.ht_operation_mode =
1889 (u16) params->ht_opmode;
1890 changed |= BSS_CHANGED_HT;
1891 }
1892
1893 if (params->p2p_ctwindow >= 0) {
1894 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1895 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1896 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1897 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1898 changed |= BSS_CHANGED_P2P_PS;
1899 }
1900
1901 if (params->p2p_opp_ps > 0) {
1902 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1903 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1904 changed |= BSS_CHANGED_P2P_PS;
1905 } else if (params->p2p_opp_ps == 0) {
1906 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1907 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1908 changed |= BSS_CHANGED_P2P_PS;
1909 }
1910
1911 ieee80211_bss_info_change_notify(sdata, changed);
1912
1913 return 0;
1914 }
1915
1916 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1917 struct net_device *dev,
1918 struct ieee80211_txq_params *params)
1919 {
1920 struct ieee80211_local *local = wiphy_priv(wiphy);
1921 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1922 struct ieee80211_tx_queue_params p;
1923
1924 if (!local->ops->conf_tx)
1925 return -EOPNOTSUPP;
1926
1927 if (local->hw.queues < IEEE80211_NUM_ACS)
1928 return -EOPNOTSUPP;
1929
1930 memset(&p, 0, sizeof(p));
1931 p.aifs = params->aifs;
1932 p.cw_max = params->cwmax;
1933 p.cw_min = params->cwmin;
1934 p.txop = params->txop;
1935
1936 /*
1937 * Setting tx queue params disables u-apsd because it's only
1938 * called in master mode.
1939 */
1940 p.uapsd = false;
1941
1942 sdata->tx_conf[params->ac] = p;
1943 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1944 wiphy_debug(local->hw.wiphy,
1945 "failed to set TX queue parameters for AC %d\n",
1946 params->ac);
1947 return -EINVAL;
1948 }
1949
1950 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1951
1952 return 0;
1953 }
1954
1955 #ifdef CONFIG_PM
1956 static int ieee80211_suspend(struct wiphy *wiphy,
1957 struct cfg80211_wowlan *wowlan)
1958 {
1959 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1960 }
1961
1962 static int ieee80211_resume(struct wiphy *wiphy)
1963 {
1964 return __ieee80211_resume(wiphy_priv(wiphy));
1965 }
1966 #else
1967 #define ieee80211_suspend NULL
1968 #define ieee80211_resume NULL
1969 #endif
1970
1971 static int ieee80211_scan(struct wiphy *wiphy,
1972 struct cfg80211_scan_request *req)
1973 {
1974 struct ieee80211_sub_if_data *sdata;
1975
1976 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1977
1978 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1979 case NL80211_IFTYPE_STATION:
1980 case NL80211_IFTYPE_ADHOC:
1981 case NL80211_IFTYPE_MESH_POINT:
1982 case NL80211_IFTYPE_P2P_CLIENT:
1983 case NL80211_IFTYPE_P2P_DEVICE:
1984 break;
1985 case NL80211_IFTYPE_P2P_GO:
1986 if (sdata->local->ops->hw_scan)
1987 break;
1988 /*
1989 * FIXME: implement NoA while scanning in software,
1990 * for now fall through to allow scanning only when
1991 * beaconing hasn't been configured yet
1992 */
1993 case NL80211_IFTYPE_AP:
1994 /*
1995 * If the scan has been forced (and the driver supports
1996 * forcing), don't care about being beaconing already.
1997 * This will create problems to the attached stations (e.g. all
1998 * the frames sent while scanning on other channel will be
1999 * lost)
2000 */
2001 if (sdata->u.ap.beacon &&
2002 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2003 !(req->flags & NL80211_SCAN_FLAG_AP)))
2004 return -EOPNOTSUPP;
2005 break;
2006 default:
2007 return -EOPNOTSUPP;
2008 }
2009
2010 return ieee80211_request_scan(sdata, req);
2011 }
2012
2013 static int
2014 ieee80211_sched_scan_start(struct wiphy *wiphy,
2015 struct net_device *dev,
2016 struct cfg80211_sched_scan_request *req)
2017 {
2018 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2019
2020 if (!sdata->local->ops->sched_scan_start)
2021 return -EOPNOTSUPP;
2022
2023 return ieee80211_request_sched_scan_start(sdata, req);
2024 }
2025
2026 static int
2027 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2028 {
2029 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2030
2031 if (!sdata->local->ops->sched_scan_stop)
2032 return -EOPNOTSUPP;
2033
2034 return ieee80211_request_sched_scan_stop(sdata);
2035 }
2036
2037 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2038 struct cfg80211_auth_request *req)
2039 {
2040 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2041 }
2042
2043 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2044 struct cfg80211_assoc_request *req)
2045 {
2046 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2047 }
2048
2049 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2050 struct cfg80211_deauth_request *req)
2051 {
2052 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2053 }
2054
2055 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2056 struct cfg80211_disassoc_request *req)
2057 {
2058 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2059 }
2060
2061 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2062 struct cfg80211_ibss_params *params)
2063 {
2064 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2065 }
2066
2067 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2068 {
2069 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2070 }
2071
2072 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2073 struct ocb_setup *setup)
2074 {
2075 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2076 }
2077
2078 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2079 {
2080 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 }
2082
2083 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2084 int rate[IEEE80211_NUM_BANDS])
2085 {
2086 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2087
2088 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2089 sizeof(int) * IEEE80211_NUM_BANDS);
2090
2091 return 0;
2092 }
2093
2094 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2095 {
2096 struct ieee80211_local *local = wiphy_priv(wiphy);
2097 int err;
2098
2099 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2100 ieee80211_check_fast_xmit_all(local);
2101
2102 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2103
2104 if (err) {
2105 ieee80211_check_fast_xmit_all(local);
2106 return err;
2107 }
2108 }
2109
2110 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2111 (changed & WIPHY_PARAM_DYN_ACK)) {
2112 s16 coverage_class;
2113
2114 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2115 wiphy->coverage_class : -1;
2116 err = drv_set_coverage_class(local, coverage_class);
2117
2118 if (err)
2119 return err;
2120 }
2121
2122 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2123 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2124
2125 if (err)
2126 return err;
2127 }
2128
2129 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2130 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2131 return -EINVAL;
2132 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2133 }
2134 if (changed & WIPHY_PARAM_RETRY_LONG) {
2135 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2136 return -EINVAL;
2137 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2138 }
2139 if (changed &
2140 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2141 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2142
2143 return 0;
2144 }
2145
2146 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2147 struct wireless_dev *wdev,
2148 enum nl80211_tx_power_setting type, int mbm)
2149 {
2150 struct ieee80211_local *local = wiphy_priv(wiphy);
2151 struct ieee80211_sub_if_data *sdata;
2152 enum nl80211_tx_power_setting txp_type = type;
2153 bool update_txp_type = false;
2154
2155 if (wdev) {
2156 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2157
2158 switch (type) {
2159 case NL80211_TX_POWER_AUTOMATIC:
2160 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2161 txp_type = NL80211_TX_POWER_LIMITED;
2162 break;
2163 case NL80211_TX_POWER_LIMITED:
2164 case NL80211_TX_POWER_FIXED:
2165 if (mbm < 0 || (mbm % 100))
2166 return -EOPNOTSUPP;
2167 sdata->user_power_level = MBM_TO_DBM(mbm);
2168 break;
2169 }
2170
2171 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2172 update_txp_type = true;
2173 sdata->vif.bss_conf.txpower_type = txp_type;
2174 }
2175
2176 ieee80211_recalc_txpower(sdata, update_txp_type);
2177
2178 return 0;
2179 }
2180
2181 switch (type) {
2182 case NL80211_TX_POWER_AUTOMATIC:
2183 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2184 txp_type = NL80211_TX_POWER_LIMITED;
2185 break;
2186 case NL80211_TX_POWER_LIMITED:
2187 case NL80211_TX_POWER_FIXED:
2188 if (mbm < 0 || (mbm % 100))
2189 return -EOPNOTSUPP;
2190 local->user_power_level = MBM_TO_DBM(mbm);
2191 break;
2192 }
2193
2194 mutex_lock(&local->iflist_mtx);
2195 list_for_each_entry(sdata, &local->interfaces, list) {
2196 sdata->user_power_level = local->user_power_level;
2197 if (txp_type != sdata->vif.bss_conf.txpower_type)
2198 update_txp_type = true;
2199 sdata->vif.bss_conf.txpower_type = txp_type;
2200 }
2201 list_for_each_entry(sdata, &local->interfaces, list)
2202 ieee80211_recalc_txpower(sdata, update_txp_type);
2203 mutex_unlock(&local->iflist_mtx);
2204
2205 return 0;
2206 }
2207
2208 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2209 struct wireless_dev *wdev,
2210 int *dbm)
2211 {
2212 struct ieee80211_local *local = wiphy_priv(wiphy);
2213 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2214
2215 if (local->ops->get_txpower)
2216 return drv_get_txpower(local, sdata, dbm);
2217
2218 if (!local->use_chanctx)
2219 *dbm = local->hw.conf.power_level;
2220 else
2221 *dbm = sdata->vif.bss_conf.txpower;
2222
2223 return 0;
2224 }
2225
2226 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2227 const u8 *addr)
2228 {
2229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2230
2231 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2232
2233 return 0;
2234 }
2235
2236 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2237 {
2238 struct ieee80211_local *local = wiphy_priv(wiphy);
2239
2240 drv_rfkill_poll(local);
2241 }
2242
2243 #ifdef CONFIG_NL80211_TESTMODE
2244 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2245 struct wireless_dev *wdev,
2246 void *data, int len)
2247 {
2248 struct ieee80211_local *local = wiphy_priv(wiphy);
2249 struct ieee80211_vif *vif = NULL;
2250
2251 if (!local->ops->testmode_cmd)
2252 return -EOPNOTSUPP;
2253
2254 if (wdev) {
2255 struct ieee80211_sub_if_data *sdata;
2256
2257 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2258 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2259 vif = &sdata->vif;
2260 }
2261
2262 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2263 }
2264
2265 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2266 struct sk_buff *skb,
2267 struct netlink_callback *cb,
2268 void *data, int len)
2269 {
2270 struct ieee80211_local *local = wiphy_priv(wiphy);
2271
2272 if (!local->ops->testmode_dump)
2273 return -EOPNOTSUPP;
2274
2275 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2276 }
2277 #endif
2278
2279 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2280 enum ieee80211_smps_mode smps_mode)
2281 {
2282 struct sta_info *sta;
2283 enum ieee80211_smps_mode old_req;
2284
2285 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2286 return -EINVAL;
2287
2288 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2289 return 0;
2290
2291 old_req = sdata->u.ap.req_smps;
2292 sdata->u.ap.req_smps = smps_mode;
2293
2294 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2295 if (old_req == smps_mode ||
2296 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2297 return 0;
2298
2299 /* If no associated stations, there's no need to do anything */
2300 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2301 sdata->smps_mode = smps_mode;
2302 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2303 return 0;
2304 }
2305
2306 ht_dbg(sdata,
2307 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2308 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2309
2310 mutex_lock(&sdata->local->sta_mtx);
2311 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2312 /*
2313 * Only stations associated to our AP and
2314 * associated VLANs
2315 */
2316 if (sta->sdata->bss != &sdata->u.ap)
2317 continue;
2318
2319 /* This station doesn't support MIMO - skip it */
2320 if (sta_info_tx_streams(sta) == 1)
2321 continue;
2322
2323 /*
2324 * Don't wake up a STA just to send the action frame
2325 * unless we are getting more restrictive.
2326 */
2327 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2328 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2329 smps_mode)) {
2330 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2331 sta->sta.addr);
2332 continue;
2333 }
2334
2335 /*
2336 * If the STA is not authorized, wait until it gets
2337 * authorized and the action frame will be sent then.
2338 */
2339 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2340 continue;
2341
2342 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2343 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2344 sdata->vif.bss_conf.bssid);
2345 }
2346 mutex_unlock(&sdata->local->sta_mtx);
2347
2348 sdata->smps_mode = smps_mode;
2349 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2350
2351 return 0;
2352 }
2353
2354 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2355 enum ieee80211_smps_mode smps_mode)
2356 {
2357 const u8 *ap;
2358 enum ieee80211_smps_mode old_req;
2359 int err;
2360
2361 lockdep_assert_held(&sdata->wdev.mtx);
2362
2363 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2364 return -EINVAL;
2365
2366 old_req = sdata->u.mgd.req_smps;
2367 sdata->u.mgd.req_smps = smps_mode;
2368
2369 if (old_req == smps_mode &&
2370 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2371 return 0;
2372
2373 /*
2374 * If not associated, or current association is not an HT
2375 * association, there's no need to do anything, just store
2376 * the new value until we associate.
2377 */
2378 if (!sdata->u.mgd.associated ||
2379 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2380 return 0;
2381
2382 ap = sdata->u.mgd.associated->bssid;
2383
2384 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2385 if (sdata->u.mgd.powersave)
2386 smps_mode = IEEE80211_SMPS_DYNAMIC;
2387 else
2388 smps_mode = IEEE80211_SMPS_OFF;
2389 }
2390
2391 /* send SM PS frame to AP */
2392 err = ieee80211_send_smps_action(sdata, smps_mode,
2393 ap, ap);
2394 if (err)
2395 sdata->u.mgd.req_smps = old_req;
2396
2397 return err;
2398 }
2399
2400 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2401 bool enabled, int timeout)
2402 {
2403 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2404 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2405
2406 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2407 return -EOPNOTSUPP;
2408
2409 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2410 return -EOPNOTSUPP;
2411
2412 if (enabled == sdata->u.mgd.powersave &&
2413 timeout == local->dynamic_ps_forced_timeout)
2414 return 0;
2415
2416 sdata->u.mgd.powersave = enabled;
2417 local->dynamic_ps_forced_timeout = timeout;
2418
2419 /* no change, but if automatic follow powersave */
2420 sdata_lock(sdata);
2421 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2422 sdata_unlock(sdata);
2423
2424 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2425 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2426
2427 ieee80211_recalc_ps(local, -1);
2428 ieee80211_recalc_ps_vif(sdata);
2429
2430 return 0;
2431 }
2432
2433 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2434 struct net_device *dev,
2435 s32 rssi_thold, u32 rssi_hyst)
2436 {
2437 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2438 struct ieee80211_vif *vif = &sdata->vif;
2439 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2440
2441 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2442 rssi_hyst == bss_conf->cqm_rssi_hyst)
2443 return 0;
2444
2445 bss_conf->cqm_rssi_thold = rssi_thold;
2446 bss_conf->cqm_rssi_hyst = rssi_hyst;
2447
2448 /* tell the driver upon association, unless already associated */
2449 if (sdata->u.mgd.associated &&
2450 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2451 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2452
2453 return 0;
2454 }
2455
2456 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2457 struct net_device *dev,
2458 const u8 *addr,
2459 const struct cfg80211_bitrate_mask *mask)
2460 {
2461 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2462 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2463 int i, ret;
2464
2465 if (!ieee80211_sdata_running(sdata))
2466 return -ENETDOWN;
2467
2468 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2469 ret = drv_set_bitrate_mask(local, sdata, mask);
2470 if (ret)
2471 return ret;
2472 }
2473
2474 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2475 struct ieee80211_supported_band *sband = wiphy->bands[i];
2476 int j;
2477
2478 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2479 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2480 sizeof(mask->control[i].ht_mcs));
2481
2482 sdata->rc_has_mcs_mask[i] = false;
2483 if (!sband)
2484 continue;
2485
2486 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2487 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2488 sdata->rc_has_mcs_mask[i] = true;
2489 break;
2490 }
2491 }
2492
2493 return 0;
2494 }
2495
2496 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2497 struct ieee80211_roc_work *new_roc,
2498 struct ieee80211_roc_work *cur_roc)
2499 {
2500 unsigned long now = jiffies;
2501 unsigned long remaining = cur_roc->hw_start_time +
2502 msecs_to_jiffies(cur_roc->duration) -
2503 now;
2504
2505 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2506 return false;
2507
2508 /* if it doesn't fit entirely, schedule a new one */
2509 if (new_roc->duration > jiffies_to_msecs(remaining))
2510 return false;
2511
2512 ieee80211_handle_roc_started(new_roc);
2513
2514 /* add to dependents so we send the expired event properly */
2515 list_add_tail(&new_roc->list, &cur_roc->dependents);
2516 return true;
2517 }
2518
2519 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2520 {
2521 lockdep_assert_held(&local->mtx);
2522
2523 local->roc_cookie_counter++;
2524
2525 /* wow, you wrapped 64 bits ... more likely a bug */
2526 if (WARN_ON(local->roc_cookie_counter == 0))
2527 local->roc_cookie_counter++;
2528
2529 return local->roc_cookie_counter;
2530 }
2531
2532 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2533 struct ieee80211_sub_if_data *sdata,
2534 struct ieee80211_channel *channel,
2535 unsigned int duration, u64 *cookie,
2536 struct sk_buff *txskb,
2537 enum ieee80211_roc_type type)
2538 {
2539 struct ieee80211_roc_work *roc, *tmp;
2540 bool queued = false;
2541 int ret;
2542
2543 lockdep_assert_held(&local->mtx);
2544
2545 if (local->use_chanctx && !local->ops->remain_on_channel)
2546 return -EOPNOTSUPP;
2547
2548 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2549 if (!roc)
2550 return -ENOMEM;
2551
2552 /*
2553 * If the duration is zero, then the driver
2554 * wouldn't actually do anything. Set it to
2555 * 10 for now.
2556 *
2557 * TODO: cancel the off-channel operation
2558 * when we get the SKB's TX status and
2559 * the wait time was zero before.
2560 */
2561 if (!duration)
2562 duration = 10;
2563
2564 roc->chan = channel;
2565 roc->duration = duration;
2566 roc->req_duration = duration;
2567 roc->frame = txskb;
2568 roc->type = type;
2569 roc->sdata = sdata;
2570 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2571 INIT_LIST_HEAD(&roc->dependents);
2572
2573 /*
2574 * cookie is either the roc cookie (for normal roc)
2575 * or the SKB (for mgmt TX)
2576 */
2577 if (!txskb) {
2578 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2579 *cookie = roc->cookie;
2580 } else {
2581 roc->mgmt_tx_cookie = *cookie;
2582 }
2583
2584 /* if there's one pending or we're scanning, queue this one */
2585 if (!list_empty(&local->roc_list) ||
2586 local->scanning || ieee80211_is_radar_required(local))
2587 goto out_check_combine;
2588
2589 /* if not HW assist, just queue & schedule work */
2590 if (!local->ops->remain_on_channel) {
2591 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2592 goto out_queue;
2593 }
2594
2595 /* otherwise actually kick it off here (for error handling) */
2596
2597 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2598 if (ret) {
2599 kfree(roc);
2600 return ret;
2601 }
2602
2603 roc->started = true;
2604 goto out_queue;
2605
2606 out_check_combine:
2607 list_for_each_entry(tmp, &local->roc_list, list) {
2608 if (tmp->chan != channel || tmp->sdata != sdata)
2609 continue;
2610
2611 /*
2612 * Extend this ROC if possible:
2613 *
2614 * If it hasn't started yet, just increase the duration
2615 * and add the new one to the list of dependents.
2616 * If the type of the new ROC has higher priority, modify the
2617 * type of the previous one to match that of the new one.
2618 */
2619 if (!tmp->started) {
2620 list_add_tail(&roc->list, &tmp->dependents);
2621 tmp->duration = max(tmp->duration, roc->duration);
2622 tmp->type = max(tmp->type, roc->type);
2623 queued = true;
2624 break;
2625 }
2626
2627 /* If it has already started, it's more difficult ... */
2628 if (local->ops->remain_on_channel) {
2629 /*
2630 * In the offloaded ROC case, if it hasn't begun, add
2631 * this new one to the dependent list to be handled
2632 * when the master one begins. If it has begun,
2633 * check if it fits entirely within the existing one,
2634 * in which case it will just be dependent as well.
2635 * Otherwise, schedule it by itself.
2636 */
2637 if (!tmp->hw_begun) {
2638 list_add_tail(&roc->list, &tmp->dependents);
2639 queued = true;
2640 break;
2641 }
2642
2643 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2644 queued = true;
2645 } else if (del_timer_sync(&tmp->work.timer)) {
2646 unsigned long new_end;
2647
2648 /*
2649 * In the software ROC case, cancel the timer, if
2650 * that fails then the finish work is already
2651 * queued/pending and thus we queue the new ROC
2652 * normally, if that succeeds then we can extend
2653 * the timer duration and TX the frame (if any.)
2654 */
2655
2656 list_add_tail(&roc->list, &tmp->dependents);
2657 queued = true;
2658
2659 new_end = jiffies + msecs_to_jiffies(roc->duration);
2660
2661 /* ok, it was started & we canceled timer */
2662 if (time_after(new_end, tmp->work.timer.expires))
2663 mod_timer(&tmp->work.timer, new_end);
2664 else
2665 add_timer(&tmp->work.timer);
2666
2667 ieee80211_handle_roc_started(roc);
2668 }
2669 break;
2670 }
2671
2672 out_queue:
2673 if (!queued)
2674 list_add_tail(&roc->list, &local->roc_list);
2675
2676 return 0;
2677 }
2678
2679 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2680 struct wireless_dev *wdev,
2681 struct ieee80211_channel *chan,
2682 unsigned int duration,
2683 u64 *cookie)
2684 {
2685 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2686 struct ieee80211_local *local = sdata->local;
2687 int ret;
2688
2689 mutex_lock(&local->mtx);
2690 ret = ieee80211_start_roc_work(local, sdata, chan,
2691 duration, cookie, NULL,
2692 IEEE80211_ROC_TYPE_NORMAL);
2693 mutex_unlock(&local->mtx);
2694
2695 return ret;
2696 }
2697
2698 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2699 u64 cookie, bool mgmt_tx)
2700 {
2701 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2702 int ret;
2703
2704 mutex_lock(&local->mtx);
2705 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2706 struct ieee80211_roc_work *dep, *tmp2;
2707
2708 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2709 if (!mgmt_tx && dep->cookie != cookie)
2710 continue;
2711 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2712 continue;
2713 /* found dependent item -- just remove it */
2714 list_del(&dep->list);
2715 mutex_unlock(&local->mtx);
2716
2717 ieee80211_roc_notify_destroy(dep, true);
2718 return 0;
2719 }
2720
2721 if (!mgmt_tx && roc->cookie != cookie)
2722 continue;
2723 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2724 continue;
2725
2726 found = roc;
2727 break;
2728 }
2729
2730 if (!found) {
2731 mutex_unlock(&local->mtx);
2732 return -ENOENT;
2733 }
2734
2735 /*
2736 * We found the item to cancel, so do that. Note that it
2737 * may have dependents, which we also cancel (and send
2738 * the expired signal for.) Not doing so would be quite
2739 * tricky here, but we may need to fix it later.
2740 */
2741
2742 if (local->ops->remain_on_channel) {
2743 if (found->started) {
2744 ret = drv_cancel_remain_on_channel(local);
2745 if (WARN_ON_ONCE(ret)) {
2746 mutex_unlock(&local->mtx);
2747 return ret;
2748 }
2749 }
2750
2751 list_del(&found->list);
2752
2753 if (found->started)
2754 ieee80211_start_next_roc(local);
2755 mutex_unlock(&local->mtx);
2756
2757 ieee80211_roc_notify_destroy(found, true);
2758 } else {
2759 /* work may be pending so use it all the time */
2760 found->abort = true;
2761 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2762
2763 mutex_unlock(&local->mtx);
2764
2765 /* work will clean up etc */
2766 flush_delayed_work(&found->work);
2767 WARN_ON(!found->to_be_freed);
2768 kfree(found);
2769 }
2770
2771 return 0;
2772 }
2773
2774 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2775 struct wireless_dev *wdev,
2776 u64 cookie)
2777 {
2778 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2779 struct ieee80211_local *local = sdata->local;
2780
2781 return ieee80211_cancel_roc(local, cookie, false);
2782 }
2783
2784 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2785 struct net_device *dev,
2786 struct cfg80211_chan_def *chandef,
2787 u32 cac_time_ms)
2788 {
2789 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2790 struct ieee80211_local *local = sdata->local;
2791 int err;
2792
2793 mutex_lock(&local->mtx);
2794 if (!list_empty(&local->roc_list) || local->scanning) {
2795 err = -EBUSY;
2796 goto out_unlock;
2797 }
2798
2799 /* whatever, but channel contexts should not complain about that one */
2800 sdata->smps_mode = IEEE80211_SMPS_OFF;
2801 sdata->needed_rx_chains = local->rx_chains;
2802
2803 err = ieee80211_vif_use_channel(sdata, chandef,
2804 IEEE80211_CHANCTX_SHARED);
2805 if (err)
2806 goto out_unlock;
2807
2808 ieee80211_queue_delayed_work(&sdata->local->hw,
2809 &sdata->dfs_cac_timer_work,
2810 msecs_to_jiffies(cac_time_ms));
2811
2812 out_unlock:
2813 mutex_unlock(&local->mtx);
2814 return err;
2815 }
2816
2817 static struct cfg80211_beacon_data *
2818 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2819 {
2820 struct cfg80211_beacon_data *new_beacon;
2821 u8 *pos;
2822 int len;
2823
2824 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2825 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2826 beacon->probe_resp_len;
2827
2828 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2829 if (!new_beacon)
2830 return NULL;
2831
2832 pos = (u8 *)(new_beacon + 1);
2833 if (beacon->head_len) {
2834 new_beacon->head_len = beacon->head_len;
2835 new_beacon->head = pos;
2836 memcpy(pos, beacon->head, beacon->head_len);
2837 pos += beacon->head_len;
2838 }
2839 if (beacon->tail_len) {
2840 new_beacon->tail_len = beacon->tail_len;
2841 new_beacon->tail = pos;
2842 memcpy(pos, beacon->tail, beacon->tail_len);
2843 pos += beacon->tail_len;
2844 }
2845 if (beacon->beacon_ies_len) {
2846 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2847 new_beacon->beacon_ies = pos;
2848 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2849 pos += beacon->beacon_ies_len;
2850 }
2851 if (beacon->proberesp_ies_len) {
2852 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2853 new_beacon->proberesp_ies = pos;
2854 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2855 pos += beacon->proberesp_ies_len;
2856 }
2857 if (beacon->assocresp_ies_len) {
2858 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2859 new_beacon->assocresp_ies = pos;
2860 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2861 pos += beacon->assocresp_ies_len;
2862 }
2863 if (beacon->probe_resp_len) {
2864 new_beacon->probe_resp_len = beacon->probe_resp_len;
2865 beacon->probe_resp = pos;
2866 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2867 pos += beacon->probe_resp_len;
2868 }
2869
2870 return new_beacon;
2871 }
2872
2873 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2874 {
2875 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2876
2877 ieee80211_queue_work(&sdata->local->hw,
2878 &sdata->csa_finalize_work);
2879 }
2880 EXPORT_SYMBOL(ieee80211_csa_finish);
2881
2882 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2883 u32 *changed)
2884 {
2885 int err;
2886
2887 switch (sdata->vif.type) {
2888 case NL80211_IFTYPE_AP:
2889 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2890 NULL);
2891 kfree(sdata->u.ap.next_beacon);
2892 sdata->u.ap.next_beacon = NULL;
2893
2894 if (err < 0)
2895 return err;
2896 *changed |= err;
2897 break;
2898 case NL80211_IFTYPE_ADHOC:
2899 err = ieee80211_ibss_finish_csa(sdata);
2900 if (err < 0)
2901 return err;
2902 *changed |= err;
2903 break;
2904 #ifdef CONFIG_MAC80211_MESH
2905 case NL80211_IFTYPE_MESH_POINT:
2906 err = ieee80211_mesh_finish_csa(sdata);
2907 if (err < 0)
2908 return err;
2909 *changed |= err;
2910 break;
2911 #endif
2912 default:
2913 WARN_ON(1);
2914 return -EINVAL;
2915 }
2916
2917 return 0;
2918 }
2919
2920 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2921 {
2922 struct ieee80211_local *local = sdata->local;
2923 u32 changed = 0;
2924 int err;
2925
2926 sdata_assert_lock(sdata);
2927 lockdep_assert_held(&local->mtx);
2928 lockdep_assert_held(&local->chanctx_mtx);
2929
2930 /*
2931 * using reservation isn't immediate as it may be deferred until later
2932 * with multi-vif. once reservation is complete it will re-schedule the
2933 * work with no reserved_chanctx so verify chandef to check if it
2934 * completed successfully
2935 */
2936
2937 if (sdata->reserved_chanctx) {
2938 /*
2939 * with multi-vif csa driver may call ieee80211_csa_finish()
2940 * many times while waiting for other interfaces to use their
2941 * reservations
2942 */
2943 if (sdata->reserved_ready)
2944 return 0;
2945
2946 return ieee80211_vif_use_reserved_context(sdata);
2947 }
2948
2949 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2950 &sdata->csa_chandef))
2951 return -EINVAL;
2952
2953 sdata->vif.csa_active = false;
2954
2955 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2956 if (err)
2957 return err;
2958
2959 ieee80211_bss_info_change_notify(sdata, changed);
2960
2961 if (sdata->csa_block_tx) {
2962 ieee80211_wake_vif_queues(local, sdata,
2963 IEEE80211_QUEUE_STOP_REASON_CSA);
2964 sdata->csa_block_tx = false;
2965 }
2966
2967 err = drv_post_channel_switch(sdata);
2968 if (err)
2969 return err;
2970
2971 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2972
2973 return 0;
2974 }
2975
2976 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2977 {
2978 if (__ieee80211_csa_finalize(sdata)) {
2979 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2980 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2981 GFP_KERNEL);
2982 }
2983 }
2984
2985 void ieee80211_csa_finalize_work(struct work_struct *work)
2986 {
2987 struct ieee80211_sub_if_data *sdata =
2988 container_of(work, struct ieee80211_sub_if_data,
2989 csa_finalize_work);
2990 struct ieee80211_local *local = sdata->local;
2991
2992 sdata_lock(sdata);
2993 mutex_lock(&local->mtx);
2994 mutex_lock(&local->chanctx_mtx);
2995
2996 /* AP might have been stopped while waiting for the lock. */
2997 if (!sdata->vif.csa_active)
2998 goto unlock;
2999
3000 if (!ieee80211_sdata_running(sdata))
3001 goto unlock;
3002
3003 ieee80211_csa_finalize(sdata);
3004
3005 unlock:
3006 mutex_unlock(&local->chanctx_mtx);
3007 mutex_unlock(&local->mtx);
3008 sdata_unlock(sdata);
3009 }
3010
3011 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3012 struct cfg80211_csa_settings *params,
3013 u32 *changed)
3014 {
3015 struct ieee80211_csa_settings csa = {};
3016 int err;
3017
3018 switch (sdata->vif.type) {
3019 case NL80211_IFTYPE_AP:
3020 sdata->u.ap.next_beacon =
3021 cfg80211_beacon_dup(&params->beacon_after);
3022 if (!sdata->u.ap.next_beacon)
3023 return -ENOMEM;
3024
3025 /*
3026 * With a count of 0, we don't have to wait for any
3027 * TBTT before switching, so complete the CSA
3028 * immediately. In theory, with a count == 1 we
3029 * should delay the switch until just before the next
3030 * TBTT, but that would complicate things so we switch
3031 * immediately too. If we would delay the switch
3032 * until the next TBTT, we would have to set the probe
3033 * response here.
3034 *
3035 * TODO: A channel switch with count <= 1 without
3036 * sending a CSA action frame is kind of useless,
3037 * because the clients won't know we're changing
3038 * channels. The action frame must be implemented
3039 * either here or in the userspace.
3040 */
3041 if (params->count <= 1)
3042 break;
3043
3044 if ((params->n_counter_offsets_beacon >
3045 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3046 (params->n_counter_offsets_presp >
3047 IEEE80211_MAX_CSA_COUNTERS_NUM))
3048 return -EINVAL;
3049
3050 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3051 csa.counter_offsets_presp = params->counter_offsets_presp;
3052 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3053 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3054 csa.count = params->count;
3055
3056 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3057 if (err < 0) {
3058 kfree(sdata->u.ap.next_beacon);
3059 return err;
3060 }
3061 *changed |= err;
3062
3063 break;
3064 case NL80211_IFTYPE_ADHOC:
3065 if (!sdata->vif.bss_conf.ibss_joined)
3066 return -EINVAL;
3067
3068 if (params->chandef.width != sdata->u.ibss.chandef.width)
3069 return -EINVAL;
3070
3071 switch (params->chandef.width) {
3072 case NL80211_CHAN_WIDTH_40:
3073 if (cfg80211_get_chandef_type(&params->chandef) !=
3074 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3075 return -EINVAL;
3076 case NL80211_CHAN_WIDTH_5:
3077 case NL80211_CHAN_WIDTH_10:
3078 case NL80211_CHAN_WIDTH_20_NOHT:
3079 case NL80211_CHAN_WIDTH_20:
3080 break;
3081 default:
3082 return -EINVAL;
3083 }
3084
3085 /* changes into another band are not supported */
3086 if (sdata->u.ibss.chandef.chan->band !=
3087 params->chandef.chan->band)
3088 return -EINVAL;
3089
3090 /* see comments in the NL80211_IFTYPE_AP block */
3091 if (params->count > 1) {
3092 err = ieee80211_ibss_csa_beacon(sdata, params);
3093 if (err < 0)
3094 return err;
3095 *changed |= err;
3096 }
3097
3098 ieee80211_send_action_csa(sdata, params);
3099
3100 break;
3101 #ifdef CONFIG_MAC80211_MESH
3102 case NL80211_IFTYPE_MESH_POINT: {
3103 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3104
3105 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3106 return -EINVAL;
3107
3108 /* changes into another band are not supported */
3109 if (sdata->vif.bss_conf.chandef.chan->band !=
3110 params->chandef.chan->band)
3111 return -EINVAL;
3112
3113 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3114 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3115 if (!ifmsh->pre_value)
3116 ifmsh->pre_value = 1;
3117 else
3118 ifmsh->pre_value++;
3119 }
3120
3121 /* see comments in the NL80211_IFTYPE_AP block */
3122 if (params->count > 1) {
3123 err = ieee80211_mesh_csa_beacon(sdata, params);
3124 if (err < 0) {
3125 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3126 return err;
3127 }
3128 *changed |= err;
3129 }
3130
3131 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3132 ieee80211_send_action_csa(sdata, params);
3133
3134 break;
3135 }
3136 #endif
3137 default:
3138 return -EOPNOTSUPP;
3139 }
3140
3141 return 0;
3142 }
3143
3144 static int
3145 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3146 struct cfg80211_csa_settings *params)
3147 {
3148 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3149 struct ieee80211_local *local = sdata->local;
3150 struct ieee80211_channel_switch ch_switch;
3151 struct ieee80211_chanctx_conf *conf;
3152 struct ieee80211_chanctx *chanctx;
3153 u32 changed = 0;
3154 int err;
3155
3156 sdata_assert_lock(sdata);
3157 lockdep_assert_held(&local->mtx);
3158
3159 if (!list_empty(&local->roc_list) || local->scanning)
3160 return -EBUSY;
3161
3162 if (sdata->wdev.cac_started)
3163 return -EBUSY;
3164
3165 if (cfg80211_chandef_identical(&params->chandef,
3166 &sdata->vif.bss_conf.chandef))
3167 return -EINVAL;
3168
3169 /* don't allow another channel switch if one is already active. */
3170 if (sdata->vif.csa_active)
3171 return -EBUSY;
3172
3173 mutex_lock(&local->chanctx_mtx);
3174 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3175 lockdep_is_held(&local->chanctx_mtx));
3176 if (!conf) {
3177 err = -EBUSY;
3178 goto out;
3179 }
3180
3181 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3182 if (!chanctx) {
3183 err = -EBUSY;
3184 goto out;
3185 }
3186
3187 ch_switch.timestamp = 0;
3188 ch_switch.device_timestamp = 0;
3189 ch_switch.block_tx = params->block_tx;
3190 ch_switch.chandef = params->chandef;
3191 ch_switch.count = params->count;
3192
3193 err = drv_pre_channel_switch(sdata, &ch_switch);
3194 if (err)
3195 goto out;
3196
3197 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3198 chanctx->mode,
3199 params->radar_required);
3200 if (err)
3201 goto out;
3202
3203 /* if reservation is invalid then this will fail */
3204 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3205 if (err) {
3206 ieee80211_vif_unreserve_chanctx(sdata);
3207 goto out;
3208 }
3209
3210 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3211 if (err) {
3212 ieee80211_vif_unreserve_chanctx(sdata);
3213 goto out;
3214 }
3215
3216 sdata->csa_chandef = params->chandef;
3217 sdata->csa_block_tx = params->block_tx;
3218 sdata->vif.csa_active = true;
3219
3220 if (sdata->csa_block_tx)
3221 ieee80211_stop_vif_queues(local, sdata,
3222 IEEE80211_QUEUE_STOP_REASON_CSA);
3223
3224 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3225 params->count);
3226
3227 if (changed) {
3228 ieee80211_bss_info_change_notify(sdata, changed);
3229 drv_channel_switch_beacon(sdata, &params->chandef);
3230 } else {
3231 /* if the beacon didn't change, we can finalize immediately */
3232 ieee80211_csa_finalize(sdata);
3233 }
3234
3235 out:
3236 mutex_unlock(&local->chanctx_mtx);
3237 return err;
3238 }
3239
3240 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3241 struct cfg80211_csa_settings *params)
3242 {
3243 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3244 struct ieee80211_local *local = sdata->local;
3245 int err;
3246
3247 mutex_lock(&local->mtx);
3248 err = __ieee80211_channel_switch(wiphy, dev, params);
3249 mutex_unlock(&local->mtx);
3250
3251 return err;
3252 }
3253
3254 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3255 struct sk_buff *skb, u64 *cookie,
3256 gfp_t gfp)
3257 {
3258 unsigned long spin_flags;
3259 struct sk_buff *ack_skb;
3260 int id;
3261
3262 ack_skb = skb_copy(skb, gfp);
3263 if (!ack_skb)
3264 return ERR_PTR(-ENOMEM);
3265
3266 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3267 id = idr_alloc(&local->ack_status_frames, ack_skb,
3268 1, 0x10000, GFP_ATOMIC);
3269 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3270
3271 if (id < 0) {
3272 kfree_skb(ack_skb);
3273 return ERR_PTR(-ENOMEM);
3274 }
3275
3276 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3277
3278 *cookie = ieee80211_mgmt_tx_cookie(local);
3279 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3280
3281 return ack_skb;
3282 }
3283
3284 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3285 struct cfg80211_mgmt_tx_params *params,
3286 u64 *cookie)
3287 {
3288 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3289 struct ieee80211_local *local = sdata->local;
3290 struct sk_buff *skb, *ack_skb;
3291 struct sta_info *sta;
3292 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3293 bool need_offchan = false;
3294 u32 flags;
3295 int ret;
3296 u8 *data;
3297
3298 if (params->dont_wait_for_ack)
3299 flags = IEEE80211_TX_CTL_NO_ACK;
3300 else
3301 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3302 IEEE80211_TX_CTL_REQ_TX_STATUS;
3303
3304 if (params->no_cck)
3305 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3306
3307 switch (sdata->vif.type) {
3308 case NL80211_IFTYPE_ADHOC:
3309 if (!sdata->vif.bss_conf.ibss_joined)
3310 need_offchan = true;
3311 /* fall through */
3312 #ifdef CONFIG_MAC80211_MESH
3313 case NL80211_IFTYPE_MESH_POINT:
3314 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3315 !sdata->u.mesh.mesh_id_len)
3316 need_offchan = true;
3317 /* fall through */
3318 #endif
3319 case NL80211_IFTYPE_AP:
3320 case NL80211_IFTYPE_AP_VLAN:
3321 case NL80211_IFTYPE_P2P_GO:
3322 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3323 !ieee80211_vif_is_mesh(&sdata->vif) &&
3324 !rcu_access_pointer(sdata->bss->beacon))
3325 need_offchan = true;
3326 if (!ieee80211_is_action(mgmt->frame_control) ||
3327 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3328 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3329 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3330 break;
3331 rcu_read_lock();
3332 sta = sta_info_get(sdata, mgmt->da);
3333 rcu_read_unlock();
3334 if (!sta)
3335 return -ENOLINK;
3336 break;
3337 case NL80211_IFTYPE_STATION:
3338 case NL80211_IFTYPE_P2P_CLIENT:
3339 sdata_lock(sdata);
3340 if (!sdata->u.mgd.associated ||
3341 (params->offchan && params->wait &&
3342 local->ops->remain_on_channel &&
3343 memcmp(sdata->u.mgd.associated->bssid,
3344 mgmt->bssid, ETH_ALEN)))
3345 need_offchan = true;
3346 sdata_unlock(sdata);
3347 break;
3348 case NL80211_IFTYPE_P2P_DEVICE:
3349 need_offchan = true;
3350 break;
3351 default:
3352 return -EOPNOTSUPP;
3353 }
3354
3355 /* configurations requiring offchan cannot work if no channel has been
3356 * specified
3357 */
3358 if (need_offchan && !params->chan)
3359 return -EINVAL;
3360
3361 mutex_lock(&local->mtx);
3362
3363 /* Check if the operating channel is the requested channel */
3364 if (!need_offchan) {
3365 struct ieee80211_chanctx_conf *chanctx_conf;
3366
3367 rcu_read_lock();
3368 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3369
3370 if (chanctx_conf) {
3371 need_offchan = params->chan &&
3372 (params->chan !=
3373 chanctx_conf->def.chan);
3374 } else if (!params->chan) {
3375 ret = -EINVAL;
3376 rcu_read_unlock();
3377 goto out_unlock;
3378 } else {
3379 need_offchan = true;
3380 }
3381 rcu_read_unlock();
3382 }
3383
3384 if (need_offchan && !params->offchan) {
3385 ret = -EBUSY;
3386 goto out_unlock;
3387 }
3388
3389 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3390 if (!skb) {
3391 ret = -ENOMEM;
3392 goto out_unlock;
3393 }
3394 skb_reserve(skb, local->hw.extra_tx_headroom);
3395
3396 data = skb_put(skb, params->len);
3397 memcpy(data, params->buf, params->len);
3398
3399 /* Update CSA counters */
3400 if (sdata->vif.csa_active &&
3401 (sdata->vif.type == NL80211_IFTYPE_AP ||
3402 sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3403 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3404 params->n_csa_offsets) {
3405 int i;
3406 struct beacon_data *beacon = NULL;
3407
3408 rcu_read_lock();
3409
3410 if (sdata->vif.type == NL80211_IFTYPE_AP)
3411 beacon = rcu_dereference(sdata->u.ap.beacon);
3412 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3413 beacon = rcu_dereference(sdata->u.ibss.presp);
3414 else if (ieee80211_vif_is_mesh(&sdata->vif))
3415 beacon = rcu_dereference(sdata->u.mesh.beacon);
3416
3417 if (beacon)
3418 for (i = 0; i < params->n_csa_offsets; i++)
3419 data[params->csa_offsets[i]] =
3420 beacon->csa_current_counter;
3421
3422 rcu_read_unlock();
3423 }
3424
3425 IEEE80211_SKB_CB(skb)->flags = flags;
3426
3427 skb->dev = sdata->dev;
3428
3429 if (!params->dont_wait_for_ack) {
3430 /* make a copy to preserve the frame contents
3431 * in case of encryption.
3432 */
3433 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3434 GFP_KERNEL);
3435 if (IS_ERR(ack_skb)) {
3436 ret = PTR_ERR(ack_skb);
3437 kfree_skb(skb);
3438 goto out_unlock;
3439 }
3440 } else {
3441 /* for cookie below */
3442 ack_skb = skb;
3443 }
3444
3445 if (!need_offchan) {
3446 ieee80211_tx_skb(sdata, skb);
3447 ret = 0;
3448 goto out_unlock;
3449 }
3450
3451 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3452 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3453 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3454 IEEE80211_SKB_CB(skb)->hw_queue =
3455 local->hw.offchannel_tx_hw_queue;
3456
3457 /* This will handle all kinds of coalescing and immediate TX */
3458 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3459 params->wait, cookie, skb,
3460 IEEE80211_ROC_TYPE_MGMT_TX);
3461 if (ret)
3462 kfree_skb(skb);
3463 out_unlock:
3464 mutex_unlock(&local->mtx);
3465 return ret;
3466 }
3467
3468 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3469 struct wireless_dev *wdev,
3470 u64 cookie)
3471 {
3472 struct ieee80211_local *local = wiphy_priv(wiphy);
3473
3474 return ieee80211_cancel_roc(local, cookie, true);
3475 }
3476
3477 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3478 struct wireless_dev *wdev,
3479 u16 frame_type, bool reg)
3480 {
3481 struct ieee80211_local *local = wiphy_priv(wiphy);
3482
3483 switch (frame_type) {
3484 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3485 if (reg)
3486 local->probe_req_reg++;
3487 else
3488 local->probe_req_reg--;
3489
3490 if (!local->open_count)
3491 break;
3492
3493 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3494 break;
3495 default:
3496 break;
3497 }
3498 }
3499
3500 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3501 {
3502 struct ieee80211_local *local = wiphy_priv(wiphy);
3503
3504 if (local->started)
3505 return -EOPNOTSUPP;
3506
3507 return drv_set_antenna(local, tx_ant, rx_ant);
3508 }
3509
3510 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3511 {
3512 struct ieee80211_local *local = wiphy_priv(wiphy);
3513
3514 return drv_get_antenna(local, tx_ant, rx_ant);
3515 }
3516
3517 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3518 struct net_device *dev,
3519 struct cfg80211_gtk_rekey_data *data)
3520 {
3521 struct ieee80211_local *local = wiphy_priv(wiphy);
3522 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3523
3524 if (!local->ops->set_rekey_data)
3525 return -EOPNOTSUPP;
3526
3527 drv_set_rekey_data(local, sdata, data);
3528
3529 return 0;
3530 }
3531
3532 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3533 const u8 *peer, u64 *cookie)
3534 {
3535 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3536 struct ieee80211_local *local = sdata->local;
3537 struct ieee80211_qos_hdr *nullfunc;
3538 struct sk_buff *skb, *ack_skb;
3539 int size = sizeof(*nullfunc);
3540 __le16 fc;
3541 bool qos;
3542 struct ieee80211_tx_info *info;
3543 struct sta_info *sta;
3544 struct ieee80211_chanctx_conf *chanctx_conf;
3545 enum ieee80211_band band;
3546 int ret;
3547
3548 /* the lock is needed to assign the cookie later */
3549 mutex_lock(&local->mtx);
3550
3551 rcu_read_lock();
3552 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3553 if (WARN_ON(!chanctx_conf)) {
3554 ret = -EINVAL;
3555 goto unlock;
3556 }
3557 band = chanctx_conf->def.chan->band;
3558 sta = sta_info_get_bss(sdata, peer);
3559 if (sta) {
3560 qos = sta->sta.wme;
3561 } else {
3562 ret = -ENOLINK;
3563 goto unlock;
3564 }
3565
3566 if (qos) {
3567 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3568 IEEE80211_STYPE_QOS_NULLFUNC |
3569 IEEE80211_FCTL_FROMDS);
3570 } else {
3571 size -= 2;
3572 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3573 IEEE80211_STYPE_NULLFUNC |
3574 IEEE80211_FCTL_FROMDS);
3575 }
3576
3577 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3578 if (!skb) {
3579 ret = -ENOMEM;
3580 goto unlock;
3581 }
3582
3583 skb->dev = dev;
3584
3585 skb_reserve(skb, local->hw.extra_tx_headroom);
3586
3587 nullfunc = (void *) skb_put(skb, size);
3588 nullfunc->frame_control = fc;
3589 nullfunc->duration_id = 0;
3590 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3591 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3592 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3593 nullfunc->seq_ctrl = 0;
3594
3595 info = IEEE80211_SKB_CB(skb);
3596
3597 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3598 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3599 info->band = band;
3600
3601 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3602 skb->priority = 7;
3603 if (qos)
3604 nullfunc->qos_ctrl = cpu_to_le16(7);
3605
3606 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3607 if (IS_ERR(ack_skb)) {
3608 kfree_skb(skb);
3609 ret = PTR_ERR(ack_skb);
3610 goto unlock;
3611 }
3612
3613 local_bh_disable();
3614 ieee80211_xmit(sdata, sta, skb);
3615 local_bh_enable();
3616
3617 ret = 0;
3618 unlock:
3619 rcu_read_unlock();
3620 mutex_unlock(&local->mtx);
3621
3622 return ret;
3623 }
3624
3625 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3626 struct wireless_dev *wdev,
3627 struct cfg80211_chan_def *chandef)
3628 {
3629 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3630 struct ieee80211_local *local = wiphy_priv(wiphy);
3631 struct ieee80211_chanctx_conf *chanctx_conf;
3632 int ret = -ENODATA;
3633
3634 rcu_read_lock();
3635 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3636 if (chanctx_conf) {
3637 *chandef = sdata->vif.bss_conf.chandef;
3638 ret = 0;
3639 } else if (local->open_count > 0 &&
3640 local->open_count == local->monitors &&
3641 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3642 if (local->use_chanctx)
3643 *chandef = local->monitor_chandef;
3644 else
3645 *chandef = local->_oper_chandef;
3646 ret = 0;
3647 }
3648 rcu_read_unlock();
3649
3650 return ret;
3651 }
3652
3653 #ifdef CONFIG_PM
3654 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3655 {
3656 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3657 }
3658 #endif
3659
3660 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3661 struct net_device *dev,
3662 struct cfg80211_qos_map *qos_map)
3663 {
3664 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3665 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3666
3667 if (qos_map) {
3668 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3669 if (!new_qos_map)
3670 return -ENOMEM;
3671 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3672 } else {
3673 /* A NULL qos_map was passed to disable QoS mapping */
3674 new_qos_map = NULL;
3675 }
3676
3677 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3678 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3679 if (old_qos_map)
3680 kfree_rcu(old_qos_map, rcu_head);
3681
3682 return 0;
3683 }
3684
3685 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3686 struct net_device *dev,
3687 struct cfg80211_chan_def *chandef)
3688 {
3689 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3690 int ret;
3691 u32 changed = 0;
3692
3693 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3694 if (ret == 0)
3695 ieee80211_bss_info_change_notify(sdata, changed);
3696
3697 return ret;
3698 }
3699
3700 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3701 u8 tsid, const u8 *peer, u8 up,
3702 u16 admitted_time)
3703 {
3704 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3705 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3706 int ac = ieee802_1d_to_ac[up];
3707
3708 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3709 return -EOPNOTSUPP;
3710
3711 if (!(sdata->wmm_acm & BIT(up)))
3712 return -EINVAL;
3713
3714 if (ifmgd->tx_tspec[ac].admitted_time)
3715 return -EBUSY;
3716
3717 if (admitted_time) {
3718 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3719 ifmgd->tx_tspec[ac].tsid = tsid;
3720 ifmgd->tx_tspec[ac].up = up;
3721 }
3722
3723 return 0;
3724 }
3725
3726 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3727 u8 tsid, const u8 *peer)
3728 {
3729 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3730 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3731 struct ieee80211_local *local = wiphy_priv(wiphy);
3732 int ac;
3733
3734 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3735 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3736
3737 /* skip unused entries */
3738 if (!tx_tspec->admitted_time)
3739 continue;
3740
3741 if (tx_tspec->tsid != tsid)
3742 continue;
3743
3744 /* due to this new packets will be reassigned to non-ACM ACs */
3745 tx_tspec->up = -1;
3746
3747 /* Make sure that all packets have been sent to avoid to
3748 * restore the QoS params on packets that are still on the
3749 * queues.
3750 */
3751 synchronize_net();
3752 ieee80211_flush_queues(local, sdata, false);
3753
3754 /* restore the normal QoS parameters
3755 * (unconditionally to avoid races)
3756 */
3757 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3758 tx_tspec->downgraded = false;
3759 ieee80211_sta_handle_tspec_ac_params(sdata);
3760
3761 /* finally clear all the data */
3762 memset(tx_tspec, 0, sizeof(*tx_tspec));
3763
3764 return 0;
3765 }
3766
3767 return -ENOENT;
3768 }
3769
3770 const struct cfg80211_ops mac80211_config_ops = {
3771 .add_virtual_intf = ieee80211_add_iface,
3772 .del_virtual_intf = ieee80211_del_iface,
3773 .change_virtual_intf = ieee80211_change_iface,
3774 .start_p2p_device = ieee80211_start_p2p_device,
3775 .stop_p2p_device = ieee80211_stop_p2p_device,
3776 .add_key = ieee80211_add_key,
3777 .del_key = ieee80211_del_key,
3778 .get_key = ieee80211_get_key,
3779 .set_default_key = ieee80211_config_default_key,
3780 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3781 .start_ap = ieee80211_start_ap,
3782 .change_beacon = ieee80211_change_beacon,
3783 .stop_ap = ieee80211_stop_ap,
3784 .add_station = ieee80211_add_station,
3785 .del_station = ieee80211_del_station,
3786 .change_station = ieee80211_change_station,
3787 .get_station = ieee80211_get_station,
3788 .dump_station = ieee80211_dump_station,
3789 .dump_survey = ieee80211_dump_survey,
3790 #ifdef CONFIG_MAC80211_MESH
3791 .add_mpath = ieee80211_add_mpath,
3792 .del_mpath = ieee80211_del_mpath,
3793 .change_mpath = ieee80211_change_mpath,
3794 .get_mpath = ieee80211_get_mpath,
3795 .dump_mpath = ieee80211_dump_mpath,
3796 .get_mpp = ieee80211_get_mpp,
3797 .dump_mpp = ieee80211_dump_mpp,
3798 .update_mesh_config = ieee80211_update_mesh_config,
3799 .get_mesh_config = ieee80211_get_mesh_config,
3800 .join_mesh = ieee80211_join_mesh,
3801 .leave_mesh = ieee80211_leave_mesh,
3802 #endif
3803 .join_ocb = ieee80211_join_ocb,
3804 .leave_ocb = ieee80211_leave_ocb,
3805 .change_bss = ieee80211_change_bss,
3806 .set_txq_params = ieee80211_set_txq_params,
3807 .set_monitor_channel = ieee80211_set_monitor_channel,
3808 .suspend = ieee80211_suspend,
3809 .resume = ieee80211_resume,
3810 .scan = ieee80211_scan,
3811 .sched_scan_start = ieee80211_sched_scan_start,
3812 .sched_scan_stop = ieee80211_sched_scan_stop,
3813 .auth = ieee80211_auth,
3814 .assoc = ieee80211_assoc,
3815 .deauth = ieee80211_deauth,
3816 .disassoc = ieee80211_disassoc,
3817 .join_ibss = ieee80211_join_ibss,
3818 .leave_ibss = ieee80211_leave_ibss,
3819 .set_mcast_rate = ieee80211_set_mcast_rate,
3820 .set_wiphy_params = ieee80211_set_wiphy_params,
3821 .set_tx_power = ieee80211_set_tx_power,
3822 .get_tx_power = ieee80211_get_tx_power,
3823 .set_wds_peer = ieee80211_set_wds_peer,
3824 .rfkill_poll = ieee80211_rfkill_poll,
3825 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3826 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3827 .set_power_mgmt = ieee80211_set_power_mgmt,
3828 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3829 .remain_on_channel = ieee80211_remain_on_channel,
3830 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3831 .mgmt_tx = ieee80211_mgmt_tx,
3832 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3833 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3834 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3835 .set_antenna = ieee80211_set_antenna,
3836 .get_antenna = ieee80211_get_antenna,
3837 .set_rekey_data = ieee80211_set_rekey_data,
3838 .tdls_oper = ieee80211_tdls_oper,
3839 .tdls_mgmt = ieee80211_tdls_mgmt,
3840 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3841 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3842 .probe_client = ieee80211_probe_client,
3843 .set_noack_map = ieee80211_set_noack_map,
3844 #ifdef CONFIG_PM
3845 .set_wakeup = ieee80211_set_wakeup,
3846 #endif
3847 .get_channel = ieee80211_cfg_get_channel,
3848 .start_radar_detection = ieee80211_start_radar_detection,
3849 .channel_switch = ieee80211_channel_switch,
3850 .set_qos_map = ieee80211_set_qos_map,
3851 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3852 .add_tx_ts = ieee80211_add_tx_ts,
3853 .del_tx_ts = ieee80211_del_tx_ts,
3854 };
Linux kernel - Deliverables
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