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mac80211: make remain_on_channel() op pass vif param
[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 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24 const char *name,
25 enum nl80211_iftype type,
26 u32 *flags,
27 struct vif_params *params)
28 {
29 struct ieee80211_local *local = wiphy_priv(wiphy);
30 struct wireless_dev *wdev;
31 struct ieee80211_sub_if_data *sdata;
32 int err;
33
34 err = ieee80211_if_add(local, name, &wdev, type, params);
35 if (err)
36 return ERR_PTR(err);
37
38 if (type == NL80211_IFTYPE_MONITOR && flags) {
39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40 sdata->u.mntr_flags = *flags;
41 }
42
43 return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50 return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54 struct net_device *dev,
55 enum nl80211_iftype type, u32 *flags,
56 struct vif_params *params)
57 {
58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59 int ret;
60
61 ret = ieee80211_if_change_type(sdata, type);
62 if (ret)
63 return ret;
64
65 if (type == NL80211_IFTYPE_AP_VLAN &&
66 params && params->use_4addr == 0)
67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68 else if (type == NL80211_IFTYPE_STATION &&
69 params && params->use_4addr >= 0)
70 sdata->u.mgd.use_4addr = params->use_4addr;
71
72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73 struct ieee80211_local *local = sdata->local;
74
75 if (ieee80211_sdata_running(sdata)) {
76 /*
77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
78 * changed while the interface is up.
79 * Else we would need to add a lot of cruft
80 * to update everything:
81 * cooked_mntrs, monitor and all fif_* counters
82 * reconfigure hardware
83 */
84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
86 return -EBUSY;
87
88 ieee80211_adjust_monitor_flags(sdata, -1);
89 sdata->u.mntr_flags = *flags;
90 ieee80211_adjust_monitor_flags(sdata, 1);
91
92 ieee80211_configure_filter(local);
93 } else {
94 /*
95 * Because the interface is down, ieee80211_do_stop
96 * and ieee80211_do_open take care of "everything"
97 * mentioned in the comment above.
98 */
99 sdata->u.mntr_flags = *flags;
100 }
101 }
102
103 return 0;
104 }
105
106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
107 struct wireless_dev *wdev)
108 {
109 return ieee80211_do_open(wdev, true);
110 }
111
112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
116 }
117
118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
119 struct net_device *dev,
120 u16 noack_map)
121 {
122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
123
124 sdata->noack_map = noack_map;
125 return 0;
126 }
127
128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
129 u8 key_idx, bool pairwise, const u8 *mac_addr,
130 struct key_params *params)
131 {
132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
133 struct sta_info *sta = NULL;
134 struct ieee80211_key *key;
135 int err;
136
137 if (!ieee80211_sdata_running(sdata))
138 return -ENETDOWN;
139
140 /* reject WEP and TKIP keys if WEP failed to initialize */
141 switch (params->cipher) {
142 case WLAN_CIPHER_SUITE_WEP40:
143 case WLAN_CIPHER_SUITE_TKIP:
144 case WLAN_CIPHER_SUITE_WEP104:
145 if (IS_ERR(sdata->local->wep_tx_tfm))
146 return -EINVAL;
147 break;
148 default:
149 break;
150 }
151
152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
153 params->key, params->seq_len, params->seq);
154 if (IS_ERR(key))
155 return PTR_ERR(key);
156
157 if (pairwise)
158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
159
160 mutex_lock(&sdata->local->sta_mtx);
161
162 if (mac_addr) {
163 if (ieee80211_vif_is_mesh(&sdata->vif))
164 sta = sta_info_get(sdata, mac_addr);
165 else
166 sta = sta_info_get_bss(sdata, mac_addr);
167 if (!sta) {
168 ieee80211_key_free(sdata->local, key);
169 err = -ENOENT;
170 goto out_unlock;
171 }
172 }
173
174 switch (sdata->vif.type) {
175 case NL80211_IFTYPE_STATION:
176 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
177 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
178 break;
179 case NL80211_IFTYPE_AP:
180 case NL80211_IFTYPE_AP_VLAN:
181 /* Keys without a station are used for TX only */
182 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
183 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
184 break;
185 case NL80211_IFTYPE_ADHOC:
186 /* no MFP (yet) */
187 break;
188 case NL80211_IFTYPE_MESH_POINT:
189 #ifdef CONFIG_MAC80211_MESH
190 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
191 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
192 break;
193 #endif
194 case NL80211_IFTYPE_WDS:
195 case NL80211_IFTYPE_MONITOR:
196 case NL80211_IFTYPE_P2P_DEVICE:
197 case NL80211_IFTYPE_UNSPECIFIED:
198 case NUM_NL80211_IFTYPES:
199 case NL80211_IFTYPE_P2P_CLIENT:
200 case NL80211_IFTYPE_P2P_GO:
201 /* shouldn't happen */
202 WARN_ON_ONCE(1);
203 break;
204 }
205
206 err = ieee80211_key_link(key, sdata, sta);
207 if (err)
208 ieee80211_key_free(sdata->local, key);
209
210 out_unlock:
211 mutex_unlock(&sdata->local->sta_mtx);
212
213 return err;
214 }
215
216 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
217 u8 key_idx, bool pairwise, const u8 *mac_addr)
218 {
219 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
220 struct ieee80211_local *local = sdata->local;
221 struct sta_info *sta;
222 struct ieee80211_key *key = NULL;
223 int ret;
224
225 mutex_lock(&local->sta_mtx);
226 mutex_lock(&local->key_mtx);
227
228 if (mac_addr) {
229 ret = -ENOENT;
230
231 sta = sta_info_get_bss(sdata, mac_addr);
232 if (!sta)
233 goto out_unlock;
234
235 if (pairwise)
236 key = key_mtx_dereference(local, sta->ptk);
237 else
238 key = key_mtx_dereference(local, sta->gtk[key_idx]);
239 } else
240 key = key_mtx_dereference(local, sdata->keys[key_idx]);
241
242 if (!key) {
243 ret = -ENOENT;
244 goto out_unlock;
245 }
246
247 __ieee80211_key_free(key);
248
249 ret = 0;
250 out_unlock:
251 mutex_unlock(&local->key_mtx);
252 mutex_unlock(&local->sta_mtx);
253
254 return ret;
255 }
256
257 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
258 u8 key_idx, bool pairwise, const u8 *mac_addr,
259 void *cookie,
260 void (*callback)(void *cookie,
261 struct key_params *params))
262 {
263 struct ieee80211_sub_if_data *sdata;
264 struct sta_info *sta = NULL;
265 u8 seq[6] = {0};
266 struct key_params params;
267 struct ieee80211_key *key = NULL;
268 u64 pn64;
269 u32 iv32;
270 u16 iv16;
271 int err = -ENOENT;
272
273 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
274
275 rcu_read_lock();
276
277 if (mac_addr) {
278 sta = sta_info_get_bss(sdata, mac_addr);
279 if (!sta)
280 goto out;
281
282 if (pairwise)
283 key = rcu_dereference(sta->ptk);
284 else if (key_idx < NUM_DEFAULT_KEYS)
285 key = rcu_dereference(sta->gtk[key_idx]);
286 } else
287 key = rcu_dereference(sdata->keys[key_idx]);
288
289 if (!key)
290 goto out;
291
292 memset(&params, 0, sizeof(params));
293
294 params.cipher = key->conf.cipher;
295
296 switch (key->conf.cipher) {
297 case WLAN_CIPHER_SUITE_TKIP:
298 iv32 = key->u.tkip.tx.iv32;
299 iv16 = key->u.tkip.tx.iv16;
300
301 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
302 drv_get_tkip_seq(sdata->local,
303 key->conf.hw_key_idx,
304 &iv32, &iv16);
305
306 seq[0] = iv16 & 0xff;
307 seq[1] = (iv16 >> 8) & 0xff;
308 seq[2] = iv32 & 0xff;
309 seq[3] = (iv32 >> 8) & 0xff;
310 seq[4] = (iv32 >> 16) & 0xff;
311 seq[5] = (iv32 >> 24) & 0xff;
312 params.seq = seq;
313 params.seq_len = 6;
314 break;
315 case WLAN_CIPHER_SUITE_CCMP:
316 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
317 seq[0] = pn64;
318 seq[1] = pn64 >> 8;
319 seq[2] = pn64 >> 16;
320 seq[3] = pn64 >> 24;
321 seq[4] = pn64 >> 32;
322 seq[5] = pn64 >> 40;
323 params.seq = seq;
324 params.seq_len = 6;
325 break;
326 case WLAN_CIPHER_SUITE_AES_CMAC:
327 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
328 seq[0] = pn64;
329 seq[1] = pn64 >> 8;
330 seq[2] = pn64 >> 16;
331 seq[3] = pn64 >> 24;
332 seq[4] = pn64 >> 32;
333 seq[5] = pn64 >> 40;
334 params.seq = seq;
335 params.seq_len = 6;
336 break;
337 }
338
339 params.key = key->conf.key;
340 params.key_len = key->conf.keylen;
341
342 callback(cookie, &params);
343 err = 0;
344
345 out:
346 rcu_read_unlock();
347 return err;
348 }
349
350 static int ieee80211_config_default_key(struct wiphy *wiphy,
351 struct net_device *dev,
352 u8 key_idx, bool uni,
353 bool multi)
354 {
355 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
356
357 ieee80211_set_default_key(sdata, key_idx, uni, multi);
358
359 return 0;
360 }
361
362 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
363 struct net_device *dev,
364 u8 key_idx)
365 {
366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
367
368 ieee80211_set_default_mgmt_key(sdata, key_idx);
369
370 return 0;
371 }
372
373 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
374 {
375 enum ieee80211_band band = ieee80211_get_sdata_band(sta->sdata);
376
377 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
378 struct ieee80211_supported_band *sband;
379 sband = sta->local->hw.wiphy->bands[band];
380 rate->legacy = sband->bitrates[idx].bitrate;
381 } else
382 rate->mcs = idx;
383 }
384
385 void sta_set_rate_info_tx(struct sta_info *sta,
386 const struct ieee80211_tx_rate *rate,
387 struct rate_info *rinfo)
388 {
389 rinfo->flags = 0;
390 if (rate->flags & IEEE80211_TX_RC_MCS)
391 rinfo->flags |= RATE_INFO_FLAGS_MCS;
392 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
393 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
394 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
395 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
396 rate_idx_to_bitrate(rinfo, sta, rate->idx);
397 }
398
399 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
400 {
401 struct ieee80211_sub_if_data *sdata = sta->sdata;
402 struct ieee80211_local *local = sdata->local;
403 struct timespec uptime;
404
405 sinfo->generation = sdata->local->sta_generation;
406
407 sinfo->filled = STATION_INFO_INACTIVE_TIME |
408 STATION_INFO_RX_BYTES |
409 STATION_INFO_TX_BYTES |
410 STATION_INFO_RX_PACKETS |
411 STATION_INFO_TX_PACKETS |
412 STATION_INFO_TX_RETRIES |
413 STATION_INFO_TX_FAILED |
414 STATION_INFO_TX_BITRATE |
415 STATION_INFO_RX_BITRATE |
416 STATION_INFO_RX_DROP_MISC |
417 STATION_INFO_BSS_PARAM |
418 STATION_INFO_CONNECTED_TIME |
419 STATION_INFO_STA_FLAGS |
420 STATION_INFO_BEACON_LOSS_COUNT;
421
422 do_posix_clock_monotonic_gettime(&uptime);
423 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
424
425 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
426 sinfo->rx_bytes = sta->rx_bytes;
427 sinfo->tx_bytes = sta->tx_bytes;
428 sinfo->rx_packets = sta->rx_packets;
429 sinfo->tx_packets = sta->tx_packets;
430 sinfo->tx_retries = sta->tx_retry_count;
431 sinfo->tx_failed = sta->tx_retry_failed;
432 sinfo->rx_dropped_misc = sta->rx_dropped;
433 sinfo->beacon_loss_count = sta->beacon_loss_count;
434
435 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
436 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
437 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
438 if (!local->ops->get_rssi ||
439 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
440 sinfo->signal = (s8)sta->last_signal;
441 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
442 }
443
444 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
445
446 sinfo->rxrate.flags = 0;
447 if (sta->last_rx_rate_flag & RX_FLAG_HT)
448 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
449 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
450 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
451 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
452 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
453 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
454
455 if (ieee80211_vif_is_mesh(&sdata->vif)) {
456 #ifdef CONFIG_MAC80211_MESH
457 sinfo->filled |= STATION_INFO_LLID |
458 STATION_INFO_PLID |
459 STATION_INFO_PLINK_STATE;
460
461 sinfo->llid = le16_to_cpu(sta->llid);
462 sinfo->plid = le16_to_cpu(sta->plid);
463 sinfo->plink_state = sta->plink_state;
464 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
465 sinfo->filled |= STATION_INFO_T_OFFSET;
466 sinfo->t_offset = sta->t_offset;
467 }
468 #endif
469 }
470
471 sinfo->bss_param.flags = 0;
472 if (sdata->vif.bss_conf.use_cts_prot)
473 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
474 if (sdata->vif.bss_conf.use_short_preamble)
475 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
476 if (sdata->vif.bss_conf.use_short_slot)
477 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
478 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
479 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
480
481 sinfo->sta_flags.set = 0;
482 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
483 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
484 BIT(NL80211_STA_FLAG_WME) |
485 BIT(NL80211_STA_FLAG_MFP) |
486 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
487 BIT(NL80211_STA_FLAG_TDLS_PEER);
488 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
489 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
490 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
491 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
492 if (test_sta_flag(sta, WLAN_STA_WME))
493 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
494 if (test_sta_flag(sta, WLAN_STA_MFP))
495 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
496 if (test_sta_flag(sta, WLAN_STA_AUTH))
497 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
498 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
499 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
500 }
501
502 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
503 "rx_packets", "rx_bytes", "wep_weak_iv_count",
504 "rx_duplicates", "rx_fragments", "rx_dropped",
505 "tx_packets", "tx_bytes", "tx_fragments",
506 "tx_filtered", "tx_retry_failed", "tx_retries",
507 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
508 "channel", "noise", "ch_time", "ch_time_busy",
509 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
510 };
511 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
512
513 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
514 struct net_device *dev,
515 int sset)
516 {
517 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
518 int rv = 0;
519
520 if (sset == ETH_SS_STATS)
521 rv += STA_STATS_LEN;
522
523 rv += drv_get_et_sset_count(sdata, sset);
524
525 if (rv == 0)
526 return -EOPNOTSUPP;
527 return rv;
528 }
529
530 static void ieee80211_get_et_stats(struct wiphy *wiphy,
531 struct net_device *dev,
532 struct ethtool_stats *stats,
533 u64 *data)
534 {
535 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
536 struct ieee80211_chanctx_conf *chanctx_conf;
537 struct ieee80211_channel *channel;
538 struct sta_info *sta;
539 struct ieee80211_local *local = sdata->local;
540 struct station_info sinfo;
541 struct survey_info survey;
542 int i, q;
543 #define STA_STATS_SURVEY_LEN 7
544
545 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
546
547 #define ADD_STA_STATS(sta) \
548 do { \
549 data[i++] += sta->rx_packets; \
550 data[i++] += sta->rx_bytes; \
551 data[i++] += sta->wep_weak_iv_count; \
552 data[i++] += sta->num_duplicates; \
553 data[i++] += sta->rx_fragments; \
554 data[i++] += sta->rx_dropped; \
555 \
556 data[i++] += sta->tx_packets; \
557 data[i++] += sta->tx_bytes; \
558 data[i++] += sta->tx_fragments; \
559 data[i++] += sta->tx_filtered_count; \
560 data[i++] += sta->tx_retry_failed; \
561 data[i++] += sta->tx_retry_count; \
562 data[i++] += sta->beacon_loss_count; \
563 } while (0)
564
565 /* For Managed stations, find the single station based on BSSID
566 * and use that. For interface types, iterate through all available
567 * stations and add stats for any station that is assigned to this
568 * network device.
569 */
570
571 mutex_lock(&local->sta_mtx);
572
573 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
574 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
575
576 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
577 goto do_survey;
578
579 i = 0;
580 ADD_STA_STATS(sta);
581
582 data[i++] = sta->sta_state;
583
584 sinfo.filled = 0;
585 sta_set_sinfo(sta, &sinfo);
586
587 if (sinfo.filled & STATION_INFO_TX_BITRATE)
588 data[i] = 100000 *
589 cfg80211_calculate_bitrate(&sinfo.txrate);
590 i++;
591 if (sinfo.filled & STATION_INFO_RX_BITRATE)
592 data[i] = 100000 *
593 cfg80211_calculate_bitrate(&sinfo.rxrate);
594 i++;
595
596 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
597 data[i] = (u8)sinfo.signal_avg;
598 i++;
599 } else {
600 list_for_each_entry(sta, &local->sta_list, list) {
601 /* Make sure this station belongs to the proper dev */
602 if (sta->sdata->dev != dev)
603 continue;
604
605 i = 0;
606 ADD_STA_STATS(sta);
607 }
608 }
609
610 do_survey:
611 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
612 /* Get survey stats for current channel */
613 survey.filled = 0;
614
615 rcu_read_lock();
616 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
617 if (chanctx_conf)
618 channel = chanctx_conf->channel;
619 else
620 channel = NULL;
621 rcu_read_unlock();
622
623 if (channel) {
624 q = 0;
625 do {
626 survey.filled = 0;
627 if (drv_get_survey(local, q, &survey) != 0) {
628 survey.filled = 0;
629 break;
630 }
631 q++;
632 } while (channel != survey.channel);
633 }
634
635 if (survey.filled)
636 data[i++] = survey.channel->center_freq;
637 else
638 data[i++] = 0;
639 if (survey.filled & SURVEY_INFO_NOISE_DBM)
640 data[i++] = (u8)survey.noise;
641 else
642 data[i++] = -1LL;
643 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
644 data[i++] = survey.channel_time;
645 else
646 data[i++] = -1LL;
647 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
648 data[i++] = survey.channel_time_busy;
649 else
650 data[i++] = -1LL;
651 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
652 data[i++] = survey.channel_time_ext_busy;
653 else
654 data[i++] = -1LL;
655 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
656 data[i++] = survey.channel_time_rx;
657 else
658 data[i++] = -1LL;
659 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
660 data[i++] = survey.channel_time_tx;
661 else
662 data[i++] = -1LL;
663
664 mutex_unlock(&local->sta_mtx);
665
666 if (WARN_ON(i != STA_STATS_LEN))
667 return;
668
669 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
670 }
671
672 static void ieee80211_get_et_strings(struct wiphy *wiphy,
673 struct net_device *dev,
674 u32 sset, u8 *data)
675 {
676 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
677 int sz_sta_stats = 0;
678
679 if (sset == ETH_SS_STATS) {
680 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
681 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
682 }
683 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
684 }
685
686 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
687 int idx, u8 *mac, struct station_info *sinfo)
688 {
689 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
690 struct ieee80211_local *local = sdata->local;
691 struct sta_info *sta;
692 int ret = -ENOENT;
693
694 mutex_lock(&local->sta_mtx);
695
696 sta = sta_info_get_by_idx(sdata, idx);
697 if (sta) {
698 ret = 0;
699 memcpy(mac, sta->sta.addr, ETH_ALEN);
700 sta_set_sinfo(sta, sinfo);
701 }
702
703 mutex_unlock(&local->sta_mtx);
704
705 return ret;
706 }
707
708 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
709 int idx, struct survey_info *survey)
710 {
711 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
712
713 return drv_get_survey(local, idx, survey);
714 }
715
716 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
717 u8 *mac, struct station_info *sinfo)
718 {
719 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
720 struct ieee80211_local *local = sdata->local;
721 struct sta_info *sta;
722 int ret = -ENOENT;
723
724 mutex_lock(&local->sta_mtx);
725
726 sta = sta_info_get_bss(sdata, mac);
727 if (sta) {
728 ret = 0;
729 sta_set_sinfo(sta, sinfo);
730 }
731
732 mutex_unlock(&local->sta_mtx);
733
734 return ret;
735 }
736
737 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
738 struct ieee80211_channel *chan,
739 enum nl80211_channel_type channel_type)
740 {
741 struct ieee80211_local *local = wiphy_priv(wiphy);
742 struct ieee80211_sub_if_data *sdata;
743 int ret = 0;
744
745 if (local->monitor_channel == chan &&
746 local->monitor_channel_type == channel_type)
747 return 0;
748
749 mutex_lock(&local->iflist_mtx);
750 if (local->use_chanctx) {
751 sdata = rcu_dereference_protected(
752 local->monitor_sdata,
753 lockdep_is_held(&local->iflist_mtx));
754 if (sdata) {
755 ieee80211_vif_release_channel(sdata);
756 ret = ieee80211_vif_use_channel(
757 sdata, chan, channel_type,
758 IEEE80211_CHANCTX_EXCLUSIVE);
759 }
760 } else if (local->open_count == local->monitors) {
761 local->_oper_channel = chan;
762 local->_oper_channel_type = channel_type;
763 ieee80211_hw_config(local, 0);
764 }
765
766 if (ret == 0) {
767 local->monitor_channel = chan;
768 local->monitor_channel_type = channel_type;
769 }
770 mutex_unlock(&local->iflist_mtx);
771
772 return ret;
773 }
774
775 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
776 const u8 *resp, size_t resp_len)
777 {
778 struct probe_resp *new, *old;
779
780 if (!resp || !resp_len)
781 return 1;
782
783 old = rtnl_dereference(sdata->u.ap.probe_resp);
784
785 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
786 if (!new)
787 return -ENOMEM;
788
789 new->len = resp_len;
790 memcpy(new->data, resp, resp_len);
791
792 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
793 if (old)
794 kfree_rcu(old, rcu_head);
795
796 return 0;
797 }
798
799 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
800 struct cfg80211_beacon_data *params)
801 {
802 struct beacon_data *new, *old;
803 int new_head_len, new_tail_len;
804 int size, err;
805 u32 changed = BSS_CHANGED_BEACON;
806
807 old = rtnl_dereference(sdata->u.ap.beacon);
808
809 /* Need to have a beacon head if we don't have one yet */
810 if (!params->head && !old)
811 return -EINVAL;
812
813 /* new or old head? */
814 if (params->head)
815 new_head_len = params->head_len;
816 else
817 new_head_len = old->head_len;
818
819 /* new or old tail? */
820 if (params->tail || !old)
821 /* params->tail_len will be zero for !params->tail */
822 new_tail_len = params->tail_len;
823 else
824 new_tail_len = old->tail_len;
825
826 size = sizeof(*new) + new_head_len + new_tail_len;
827
828 new = kzalloc(size, GFP_KERNEL);
829 if (!new)
830 return -ENOMEM;
831
832 /* start filling the new info now */
833
834 /*
835 * pointers go into the block we allocated,
836 * memory is | beacon_data | head | tail |
837 */
838 new->head = ((u8 *) new) + sizeof(*new);
839 new->tail = new->head + new_head_len;
840 new->head_len = new_head_len;
841 new->tail_len = new_tail_len;
842
843 /* copy in head */
844 if (params->head)
845 memcpy(new->head, params->head, new_head_len);
846 else
847 memcpy(new->head, old->head, new_head_len);
848
849 /* copy in optional tail */
850 if (params->tail)
851 memcpy(new->tail, params->tail, new_tail_len);
852 else
853 if (old)
854 memcpy(new->tail, old->tail, new_tail_len);
855
856 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
857 params->probe_resp_len);
858 if (err < 0)
859 return err;
860 if (err == 0)
861 changed |= BSS_CHANGED_AP_PROBE_RESP;
862
863 rcu_assign_pointer(sdata->u.ap.beacon, new);
864
865 if (old)
866 kfree_rcu(old, rcu_head);
867
868 return changed;
869 }
870
871 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
872 struct cfg80211_ap_settings *params)
873 {
874 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
875 struct beacon_data *old;
876 struct ieee80211_sub_if_data *vlan;
877 u32 changed = BSS_CHANGED_BEACON_INT |
878 BSS_CHANGED_BEACON_ENABLED |
879 BSS_CHANGED_BEACON |
880 BSS_CHANGED_SSID;
881 int err;
882
883 old = rtnl_dereference(sdata->u.ap.beacon);
884 if (old)
885 return -EALREADY;
886
887 /* TODO: make hostapd tell us what it wants */
888 sdata->smps_mode = IEEE80211_SMPS_OFF;
889 sdata->needed_rx_chains = sdata->local->rx_chains;
890
891 err = ieee80211_vif_use_channel(sdata, params->channel,
892 params->channel_type,
893 IEEE80211_CHANCTX_SHARED);
894 if (err)
895 return err;
896
897 /*
898 * Apply control port protocol, this allows us to
899 * not encrypt dynamic WEP control frames.
900 */
901 sdata->control_port_protocol = params->crypto.control_port_ethertype;
902 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
903 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
904 vlan->control_port_protocol =
905 params->crypto.control_port_ethertype;
906 vlan->control_port_no_encrypt =
907 params->crypto.control_port_no_encrypt;
908 }
909
910 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
911 sdata->vif.bss_conf.dtim_period = params->dtim_period;
912
913 sdata->vif.bss_conf.ssid_len = params->ssid_len;
914 if (params->ssid_len)
915 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
916 params->ssid_len);
917 sdata->vif.bss_conf.hidden_ssid =
918 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
919
920 err = ieee80211_assign_beacon(sdata, &params->beacon);
921 if (err < 0)
922 return err;
923 changed |= err;
924
925 err = drv_start_ap(sdata->local, sdata);
926 if (err) {
927 old = rtnl_dereference(sdata->u.ap.beacon);
928 if (old)
929 kfree_rcu(old, rcu_head);
930 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
931 return err;
932 }
933
934 ieee80211_bss_info_change_notify(sdata, changed);
935
936 netif_carrier_on(dev);
937 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
938 netif_carrier_on(vlan->dev);
939
940 return 0;
941 }
942
943 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
944 struct cfg80211_beacon_data *params)
945 {
946 struct ieee80211_sub_if_data *sdata;
947 struct beacon_data *old;
948 int err;
949
950 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
951
952 old = rtnl_dereference(sdata->u.ap.beacon);
953 if (!old)
954 return -ENOENT;
955
956 err = ieee80211_assign_beacon(sdata, params);
957 if (err < 0)
958 return err;
959 ieee80211_bss_info_change_notify(sdata, err);
960 return 0;
961 }
962
963 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
964 {
965 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
966 struct ieee80211_sub_if_data *vlan;
967 struct ieee80211_local *local = sdata->local;
968 struct beacon_data *old_beacon;
969 struct probe_resp *old_probe_resp;
970
971 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
972 if (!old_beacon)
973 return -ENOENT;
974 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
975
976 /* turn off carrier for this interface and dependent VLANs */
977 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
978 netif_carrier_off(vlan->dev);
979 netif_carrier_off(dev);
980
981 /* remove beacon and probe response */
982 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
983 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
984 kfree_rcu(old_beacon, rcu_head);
985 if (old_probe_resp)
986 kfree_rcu(old_probe_resp, rcu_head);
987
988 sta_info_flush(local, sdata);
989 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
990
991 drv_stop_ap(sdata->local, sdata);
992
993 /* free all potentially still buffered bcast frames */
994 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
995 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
996
997 ieee80211_vif_release_channel(sdata);
998
999 return 0;
1000 }
1001
1002 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1003 struct iapp_layer2_update {
1004 u8 da[ETH_ALEN]; /* broadcast */
1005 u8 sa[ETH_ALEN]; /* STA addr */
1006 __be16 len; /* 6 */
1007 u8 dsap; /* 0 */
1008 u8 ssap; /* 0 */
1009 u8 control;
1010 u8 xid_info[3];
1011 } __packed;
1012
1013 static void ieee80211_send_layer2_update(struct sta_info *sta)
1014 {
1015 struct iapp_layer2_update *msg;
1016 struct sk_buff *skb;
1017
1018 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1019 * bridge devices */
1020
1021 skb = dev_alloc_skb(sizeof(*msg));
1022 if (!skb)
1023 return;
1024 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1025
1026 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1027 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1028
1029 eth_broadcast_addr(msg->da);
1030 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1031 msg->len = htons(6);
1032 msg->dsap = 0;
1033 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1034 msg->control = 0xaf; /* XID response lsb.1111F101.
1035 * F=0 (no poll command; unsolicited frame) */
1036 msg->xid_info[0] = 0x81; /* XID format identifier */
1037 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1038 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1039
1040 skb->dev = sta->sdata->dev;
1041 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1042 memset(skb->cb, 0, sizeof(skb->cb));
1043 netif_rx_ni(skb);
1044 }
1045
1046 static int sta_apply_parameters(struct ieee80211_local *local,
1047 struct sta_info *sta,
1048 struct station_parameters *params)
1049 {
1050 int ret = 0;
1051 u32 rates;
1052 int i, j;
1053 struct ieee80211_supported_band *sband;
1054 struct ieee80211_sub_if_data *sdata = sta->sdata;
1055 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1056 u32 mask, set;
1057
1058 sband = local->hw.wiphy->bands[band];
1059
1060 mask = params->sta_flags_mask;
1061 set = params->sta_flags_set;
1062
1063 /*
1064 * In mesh mode, we can clear AUTHENTICATED flag but must
1065 * also make ASSOCIATED follow appropriately for the driver
1066 * API. See also below, after AUTHORIZED changes.
1067 */
1068 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1069 /* cfg80211 should not allow this in non-mesh modes */
1070 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1071 return -EINVAL;
1072
1073 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1074 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1075 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1076 if (ret)
1077 return ret;
1078 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1079 if (ret)
1080 return ret;
1081 }
1082 }
1083
1084 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1085 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1086 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1087 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1088 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1089 if (ret)
1090 return ret;
1091 }
1092
1093 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1094 /* cfg80211 should not allow this in non-mesh modes */
1095 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1096 return -EINVAL;
1097
1098 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1099 test_sta_flag(sta, WLAN_STA_AUTH)) {
1100 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1101 if (ret)
1102 return ret;
1103 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1104 if (ret)
1105 return ret;
1106 }
1107 }
1108
1109
1110 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1111 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1112 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1113 else
1114 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1115 }
1116
1117 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1118 if (set & BIT(NL80211_STA_FLAG_WME)) {
1119 set_sta_flag(sta, WLAN_STA_WME);
1120 sta->sta.wme = true;
1121 } else {
1122 clear_sta_flag(sta, WLAN_STA_WME);
1123 sta->sta.wme = false;
1124 }
1125 }
1126
1127 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1128 if (set & BIT(NL80211_STA_FLAG_MFP))
1129 set_sta_flag(sta, WLAN_STA_MFP);
1130 else
1131 clear_sta_flag(sta, WLAN_STA_MFP);
1132 }
1133
1134 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1135 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1136 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1137 else
1138 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1139 }
1140
1141 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1142 sta->sta.uapsd_queues = params->uapsd_queues;
1143 sta->sta.max_sp = params->max_sp;
1144 }
1145
1146 /*
1147 * cfg80211 validates this (1-2007) and allows setting the AID
1148 * only when creating a new station entry
1149 */
1150 if (params->aid)
1151 sta->sta.aid = params->aid;
1152
1153 /*
1154 * FIXME: updating the following information is racy when this
1155 * function is called from ieee80211_change_station().
1156 * However, all this information should be static so
1157 * maybe we should just reject attemps to change it.
1158 */
1159
1160 if (params->listen_interval >= 0)
1161 sta->listen_interval = params->listen_interval;
1162
1163 if (params->supported_rates) {
1164 rates = 0;
1165
1166 for (i = 0; i < params->supported_rates_len; i++) {
1167 int rate = (params->supported_rates[i] & 0x7f) * 5;
1168 for (j = 0; j < sband->n_bitrates; j++) {
1169 if (sband->bitrates[j].bitrate == rate)
1170 rates |= BIT(j);
1171 }
1172 }
1173 sta->sta.supp_rates[band] = rates;
1174 }
1175
1176 if (params->ht_capa)
1177 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1178 params->ht_capa,
1179 &sta->sta.ht_cap);
1180
1181 if (params->vht_capa)
1182 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1183 params->vht_capa,
1184 &sta->sta.vht_cap);
1185
1186 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1187 #ifdef CONFIG_MAC80211_MESH
1188 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1189 switch (params->plink_state) {
1190 case NL80211_PLINK_LISTEN:
1191 case NL80211_PLINK_ESTAB:
1192 case NL80211_PLINK_BLOCKED:
1193 sta->plink_state = params->plink_state;
1194 break;
1195 default:
1196 /* nothing */
1197 break;
1198 }
1199 else
1200 switch (params->plink_action) {
1201 case PLINK_ACTION_OPEN:
1202 mesh_plink_open(sta);
1203 break;
1204 case PLINK_ACTION_BLOCK:
1205 mesh_plink_block(sta);
1206 break;
1207 }
1208 #endif
1209 }
1210
1211 return 0;
1212 }
1213
1214 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1215 u8 *mac, 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 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1243 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1244
1245 err = sta_apply_parameters(local, sta, params);
1246 if (err) {
1247 sta_info_free(local, sta);
1248 return err;
1249 }
1250
1251 /*
1252 * for TDLS, rate control should be initialized only when supported
1253 * rates are known.
1254 */
1255 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1256 rate_control_rate_init(sta);
1257
1258 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1259 sdata->vif.type == NL80211_IFTYPE_AP;
1260
1261 err = sta_info_insert_rcu(sta);
1262 if (err) {
1263 rcu_read_unlock();
1264 return err;
1265 }
1266
1267 if (layer2_update)
1268 ieee80211_send_layer2_update(sta);
1269
1270 rcu_read_unlock();
1271
1272 return 0;
1273 }
1274
1275 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1276 u8 *mac)
1277 {
1278 struct ieee80211_local *local = wiphy_priv(wiphy);
1279 struct ieee80211_sub_if_data *sdata;
1280
1281 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282
1283 if (mac)
1284 return sta_info_destroy_addr_bss(sdata, mac);
1285
1286 sta_info_flush(local, sdata);
1287 return 0;
1288 }
1289
1290 static int ieee80211_change_station(struct wiphy *wiphy,
1291 struct net_device *dev,
1292 u8 *mac,
1293 struct station_parameters *params)
1294 {
1295 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1296 struct ieee80211_local *local = wiphy_priv(wiphy);
1297 struct sta_info *sta;
1298 struct ieee80211_sub_if_data *vlansdata;
1299 int err;
1300
1301 mutex_lock(&local->sta_mtx);
1302
1303 sta = sta_info_get_bss(sdata, mac);
1304 if (!sta) {
1305 mutex_unlock(&local->sta_mtx);
1306 return -ENOENT;
1307 }
1308
1309 /* in station mode, supported rates are only valid with TDLS */
1310 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1311 params->supported_rates &&
1312 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1313 mutex_unlock(&local->sta_mtx);
1314 return -EINVAL;
1315 }
1316
1317 if (params->vlan && params->vlan != sta->sdata->dev) {
1318 bool prev_4addr = false;
1319 bool new_4addr = false;
1320
1321 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1322
1323 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1324 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1325 mutex_unlock(&local->sta_mtx);
1326 return -EINVAL;
1327 }
1328
1329 if (params->vlan->ieee80211_ptr->use_4addr) {
1330 if (vlansdata->u.vlan.sta) {
1331 mutex_unlock(&local->sta_mtx);
1332 return -EBUSY;
1333 }
1334
1335 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1336 new_4addr = true;
1337 }
1338
1339 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1340 sta->sdata->u.vlan.sta) {
1341 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1342 prev_4addr = true;
1343 }
1344
1345 sta->sdata = vlansdata;
1346
1347 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1348 prev_4addr != new_4addr) {
1349 if (new_4addr)
1350 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1351 else
1352 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1353 }
1354
1355 ieee80211_send_layer2_update(sta);
1356 }
1357
1358 err = sta_apply_parameters(local, sta, params);
1359 if (err) {
1360 mutex_unlock(&local->sta_mtx);
1361 return err;
1362 }
1363
1364 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1365 rate_control_rate_init(sta);
1366
1367 mutex_unlock(&local->sta_mtx);
1368
1369 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1370 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1371 ieee80211_recalc_ps(local, -1);
1372 ieee80211_recalc_ps_vif(sdata);
1373 }
1374 return 0;
1375 }
1376
1377 #ifdef CONFIG_MAC80211_MESH
1378 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1379 u8 *dst, u8 *next_hop)
1380 {
1381 struct ieee80211_sub_if_data *sdata;
1382 struct mesh_path *mpath;
1383 struct sta_info *sta;
1384 int err;
1385
1386 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1387
1388 rcu_read_lock();
1389 sta = sta_info_get(sdata, next_hop);
1390 if (!sta) {
1391 rcu_read_unlock();
1392 return -ENOENT;
1393 }
1394
1395 err = mesh_path_add(dst, sdata);
1396 if (err) {
1397 rcu_read_unlock();
1398 return err;
1399 }
1400
1401 mpath = mesh_path_lookup(dst, sdata);
1402 if (!mpath) {
1403 rcu_read_unlock();
1404 return -ENXIO;
1405 }
1406 mesh_path_fix_nexthop(mpath, sta);
1407
1408 rcu_read_unlock();
1409 return 0;
1410 }
1411
1412 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1413 u8 *dst)
1414 {
1415 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1416
1417 if (dst)
1418 return mesh_path_del(dst, sdata);
1419
1420 mesh_path_flush_by_iface(sdata);
1421 return 0;
1422 }
1423
1424 static int ieee80211_change_mpath(struct wiphy *wiphy,
1425 struct net_device *dev,
1426 u8 *dst, u8 *next_hop)
1427 {
1428 struct ieee80211_sub_if_data *sdata;
1429 struct mesh_path *mpath;
1430 struct sta_info *sta;
1431
1432 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433
1434 rcu_read_lock();
1435
1436 sta = sta_info_get(sdata, next_hop);
1437 if (!sta) {
1438 rcu_read_unlock();
1439 return -ENOENT;
1440 }
1441
1442 mpath = mesh_path_lookup(dst, sdata);
1443 if (!mpath) {
1444 rcu_read_unlock();
1445 return -ENOENT;
1446 }
1447
1448 mesh_path_fix_nexthop(mpath, sta);
1449
1450 rcu_read_unlock();
1451 return 0;
1452 }
1453
1454 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1455 struct mpath_info *pinfo)
1456 {
1457 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1458
1459 if (next_hop_sta)
1460 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1461 else
1462 memset(next_hop, 0, ETH_ALEN);
1463
1464 memset(pinfo, 0, sizeof(*pinfo));
1465
1466 pinfo->generation = mesh_paths_generation;
1467
1468 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1469 MPATH_INFO_SN |
1470 MPATH_INFO_METRIC |
1471 MPATH_INFO_EXPTIME |
1472 MPATH_INFO_DISCOVERY_TIMEOUT |
1473 MPATH_INFO_DISCOVERY_RETRIES |
1474 MPATH_INFO_FLAGS;
1475
1476 pinfo->frame_qlen = mpath->frame_queue.qlen;
1477 pinfo->sn = mpath->sn;
1478 pinfo->metric = mpath->metric;
1479 if (time_before(jiffies, mpath->exp_time))
1480 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1481 pinfo->discovery_timeout =
1482 jiffies_to_msecs(mpath->discovery_timeout);
1483 pinfo->discovery_retries = mpath->discovery_retries;
1484 if (mpath->flags & MESH_PATH_ACTIVE)
1485 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1486 if (mpath->flags & MESH_PATH_RESOLVING)
1487 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1488 if (mpath->flags & MESH_PATH_SN_VALID)
1489 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1490 if (mpath->flags & MESH_PATH_FIXED)
1491 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1492 if (mpath->flags & MESH_PATH_RESOLVED)
1493 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1494 }
1495
1496 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1497 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1498
1499 {
1500 struct ieee80211_sub_if_data *sdata;
1501 struct mesh_path *mpath;
1502
1503 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1504
1505 rcu_read_lock();
1506 mpath = mesh_path_lookup(dst, sdata);
1507 if (!mpath) {
1508 rcu_read_unlock();
1509 return -ENOENT;
1510 }
1511 memcpy(dst, mpath->dst, ETH_ALEN);
1512 mpath_set_pinfo(mpath, next_hop, pinfo);
1513 rcu_read_unlock();
1514 return 0;
1515 }
1516
1517 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1518 int idx, u8 *dst, u8 *next_hop,
1519 struct mpath_info *pinfo)
1520 {
1521 struct ieee80211_sub_if_data *sdata;
1522 struct mesh_path *mpath;
1523
1524 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1525
1526 rcu_read_lock();
1527 mpath = mesh_path_lookup_by_idx(idx, sdata);
1528 if (!mpath) {
1529 rcu_read_unlock();
1530 return -ENOENT;
1531 }
1532 memcpy(dst, mpath->dst, ETH_ALEN);
1533 mpath_set_pinfo(mpath, next_hop, pinfo);
1534 rcu_read_unlock();
1535 return 0;
1536 }
1537
1538 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1539 struct net_device *dev,
1540 struct mesh_config *conf)
1541 {
1542 struct ieee80211_sub_if_data *sdata;
1543 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544
1545 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1546 return 0;
1547 }
1548
1549 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1550 {
1551 return (mask >> (parm-1)) & 0x1;
1552 }
1553
1554 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1555 const struct mesh_setup *setup)
1556 {
1557 u8 *new_ie;
1558 const u8 *old_ie;
1559 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1560 struct ieee80211_sub_if_data, u.mesh);
1561
1562 /* allocate information elements */
1563 new_ie = NULL;
1564 old_ie = ifmsh->ie;
1565
1566 if (setup->ie_len) {
1567 new_ie = kmemdup(setup->ie, setup->ie_len,
1568 GFP_KERNEL);
1569 if (!new_ie)
1570 return -ENOMEM;
1571 }
1572 ifmsh->ie_len = setup->ie_len;
1573 ifmsh->ie = new_ie;
1574 kfree(old_ie);
1575
1576 /* now copy the rest of the setup parameters */
1577 ifmsh->mesh_id_len = setup->mesh_id_len;
1578 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1579 ifmsh->mesh_sp_id = setup->sync_method;
1580 ifmsh->mesh_pp_id = setup->path_sel_proto;
1581 ifmsh->mesh_pm_id = setup->path_metric;
1582 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1583 if (setup->is_authenticated)
1584 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1585 if (setup->is_secure)
1586 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1587
1588 /* mcast rate setting in Mesh Node */
1589 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1590 sizeof(setup->mcast_rate));
1591
1592 return 0;
1593 }
1594
1595 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1596 struct net_device *dev, u32 mask,
1597 const struct mesh_config *nconf)
1598 {
1599 struct mesh_config *conf;
1600 struct ieee80211_sub_if_data *sdata;
1601 struct ieee80211_if_mesh *ifmsh;
1602
1603 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1604 ifmsh = &sdata->u.mesh;
1605
1606 /* Set the config options which we are interested in setting */
1607 conf = &(sdata->u.mesh.mshcfg);
1608 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1609 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1610 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1611 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1612 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1613 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1614 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1615 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1616 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1617 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1618 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1619 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1620 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1621 conf->element_ttl = nconf->element_ttl;
1622 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1623 conf->auto_open_plinks = nconf->auto_open_plinks;
1624 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1625 conf->dot11MeshNbrOffsetMaxNeighbor =
1626 nconf->dot11MeshNbrOffsetMaxNeighbor;
1627 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1628 conf->dot11MeshHWMPmaxPREQretries =
1629 nconf->dot11MeshHWMPmaxPREQretries;
1630 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1631 conf->path_refresh_time = nconf->path_refresh_time;
1632 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1633 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1634 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1635 conf->dot11MeshHWMPactivePathTimeout =
1636 nconf->dot11MeshHWMPactivePathTimeout;
1637 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1638 conf->dot11MeshHWMPpreqMinInterval =
1639 nconf->dot11MeshHWMPpreqMinInterval;
1640 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1641 conf->dot11MeshHWMPperrMinInterval =
1642 nconf->dot11MeshHWMPperrMinInterval;
1643 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1644 mask))
1645 conf->dot11MeshHWMPnetDiameterTraversalTime =
1646 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1647 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1648 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1649 ieee80211_mesh_root_setup(ifmsh);
1650 }
1651 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1652 /* our current gate announcement implementation rides on root
1653 * announcements, so require this ifmsh to also be a root node
1654 * */
1655 if (nconf->dot11MeshGateAnnouncementProtocol &&
1656 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1657 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1658 ieee80211_mesh_root_setup(ifmsh);
1659 }
1660 conf->dot11MeshGateAnnouncementProtocol =
1661 nconf->dot11MeshGateAnnouncementProtocol;
1662 }
1663 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1664 conf->dot11MeshHWMPRannInterval =
1665 nconf->dot11MeshHWMPRannInterval;
1666 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1667 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1668 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1669 /* our RSSI threshold implementation is supported only for
1670 * devices that report signal in dBm.
1671 */
1672 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1673 return -ENOTSUPP;
1674 conf->rssi_threshold = nconf->rssi_threshold;
1675 }
1676 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1677 conf->ht_opmode = nconf->ht_opmode;
1678 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1679 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1680 }
1681 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1682 conf->dot11MeshHWMPactivePathToRootTimeout =
1683 nconf->dot11MeshHWMPactivePathToRootTimeout;
1684 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1685 conf->dot11MeshHWMProotInterval =
1686 nconf->dot11MeshHWMProotInterval;
1687 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1688 conf->dot11MeshHWMPconfirmationInterval =
1689 nconf->dot11MeshHWMPconfirmationInterval;
1690 return 0;
1691 }
1692
1693 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1694 const struct mesh_config *conf,
1695 const struct mesh_setup *setup)
1696 {
1697 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1698 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1699 int err;
1700
1701 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1702 err = copy_mesh_setup(ifmsh, setup);
1703 if (err)
1704 return err;
1705
1706 /* can mesh use other SMPS modes? */
1707 sdata->smps_mode = IEEE80211_SMPS_OFF;
1708 sdata->needed_rx_chains = sdata->local->rx_chains;
1709
1710 err = ieee80211_vif_use_channel(sdata, setup->channel,
1711 setup->channel_type,
1712 IEEE80211_CHANCTX_SHARED);
1713 if (err)
1714 return err;
1715
1716 ieee80211_start_mesh(sdata);
1717
1718 return 0;
1719 }
1720
1721 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1722 {
1723 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1724
1725 ieee80211_stop_mesh(sdata);
1726 ieee80211_vif_release_channel(sdata);
1727
1728 return 0;
1729 }
1730 #endif
1731
1732 static int ieee80211_change_bss(struct wiphy *wiphy,
1733 struct net_device *dev,
1734 struct bss_parameters *params)
1735 {
1736 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1737 enum ieee80211_band band;
1738 u32 changed = 0;
1739
1740 if (!rtnl_dereference(sdata->u.ap.beacon))
1741 return -ENOENT;
1742
1743 band = ieee80211_get_sdata_band(sdata);
1744
1745 if (params->use_cts_prot >= 0) {
1746 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1747 changed |= BSS_CHANGED_ERP_CTS_PROT;
1748 }
1749 if (params->use_short_preamble >= 0) {
1750 sdata->vif.bss_conf.use_short_preamble =
1751 params->use_short_preamble;
1752 changed |= BSS_CHANGED_ERP_PREAMBLE;
1753 }
1754
1755 if (!sdata->vif.bss_conf.use_short_slot &&
1756 band == IEEE80211_BAND_5GHZ) {
1757 sdata->vif.bss_conf.use_short_slot = true;
1758 changed |= BSS_CHANGED_ERP_SLOT;
1759 }
1760
1761 if (params->use_short_slot_time >= 0) {
1762 sdata->vif.bss_conf.use_short_slot =
1763 params->use_short_slot_time;
1764 changed |= BSS_CHANGED_ERP_SLOT;
1765 }
1766
1767 if (params->basic_rates) {
1768 int i, j;
1769 u32 rates = 0;
1770 struct ieee80211_supported_band *sband = wiphy->bands[band];
1771
1772 for (i = 0; i < params->basic_rates_len; i++) {
1773 int rate = (params->basic_rates[i] & 0x7f) * 5;
1774 for (j = 0; j < sband->n_bitrates; j++) {
1775 if (sband->bitrates[j].bitrate == rate)
1776 rates |= BIT(j);
1777 }
1778 }
1779 sdata->vif.bss_conf.basic_rates = rates;
1780 changed |= BSS_CHANGED_BASIC_RATES;
1781 }
1782
1783 if (params->ap_isolate >= 0) {
1784 if (params->ap_isolate)
1785 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1786 else
1787 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1788 }
1789
1790 if (params->ht_opmode >= 0) {
1791 sdata->vif.bss_conf.ht_operation_mode =
1792 (u16) params->ht_opmode;
1793 changed |= BSS_CHANGED_HT;
1794 }
1795
1796 ieee80211_bss_info_change_notify(sdata, changed);
1797
1798 return 0;
1799 }
1800
1801 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1802 struct net_device *dev,
1803 struct ieee80211_txq_params *params)
1804 {
1805 struct ieee80211_local *local = wiphy_priv(wiphy);
1806 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1807 struct ieee80211_tx_queue_params p;
1808
1809 if (!local->ops->conf_tx)
1810 return -EOPNOTSUPP;
1811
1812 if (local->hw.queues < IEEE80211_NUM_ACS)
1813 return -EOPNOTSUPP;
1814
1815 memset(&p, 0, sizeof(p));
1816 p.aifs = params->aifs;
1817 p.cw_max = params->cwmax;
1818 p.cw_min = params->cwmin;
1819 p.txop = params->txop;
1820
1821 /*
1822 * Setting tx queue params disables u-apsd because it's only
1823 * called in master mode.
1824 */
1825 p.uapsd = false;
1826
1827 sdata->tx_conf[params->ac] = p;
1828 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1829 wiphy_debug(local->hw.wiphy,
1830 "failed to set TX queue parameters for AC %d\n",
1831 params->ac);
1832 return -EINVAL;
1833 }
1834
1835 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1836
1837 return 0;
1838 }
1839
1840 #ifdef CONFIG_PM
1841 static int ieee80211_suspend(struct wiphy *wiphy,
1842 struct cfg80211_wowlan *wowlan)
1843 {
1844 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1845 }
1846
1847 static int ieee80211_resume(struct wiphy *wiphy)
1848 {
1849 return __ieee80211_resume(wiphy_priv(wiphy));
1850 }
1851 #else
1852 #define ieee80211_suspend NULL
1853 #define ieee80211_resume NULL
1854 #endif
1855
1856 static int ieee80211_scan(struct wiphy *wiphy,
1857 struct cfg80211_scan_request *req)
1858 {
1859 struct ieee80211_sub_if_data *sdata;
1860
1861 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1862
1863 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1864 case NL80211_IFTYPE_STATION:
1865 case NL80211_IFTYPE_ADHOC:
1866 case NL80211_IFTYPE_MESH_POINT:
1867 case NL80211_IFTYPE_P2P_CLIENT:
1868 case NL80211_IFTYPE_P2P_DEVICE:
1869 break;
1870 case NL80211_IFTYPE_P2P_GO:
1871 if (sdata->local->ops->hw_scan)
1872 break;
1873 /*
1874 * FIXME: implement NoA while scanning in software,
1875 * for now fall through to allow scanning only when
1876 * beaconing hasn't been configured yet
1877 */
1878 case NL80211_IFTYPE_AP:
1879 /*
1880 * If the scan has been forced (and the driver supports
1881 * forcing), don't care about being beaconing already.
1882 * This will create problems to the attached stations (e.g. all
1883 * the frames sent while scanning on other channel will be
1884 * lost)
1885 */
1886 if (sdata->u.ap.beacon &&
1887 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1888 !(req->flags & NL80211_SCAN_FLAG_AP)))
1889 return -EOPNOTSUPP;
1890 break;
1891 default:
1892 return -EOPNOTSUPP;
1893 }
1894
1895 return ieee80211_request_scan(sdata, req);
1896 }
1897
1898 static int
1899 ieee80211_sched_scan_start(struct wiphy *wiphy,
1900 struct net_device *dev,
1901 struct cfg80211_sched_scan_request *req)
1902 {
1903 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1904
1905 if (!sdata->local->ops->sched_scan_start)
1906 return -EOPNOTSUPP;
1907
1908 return ieee80211_request_sched_scan_start(sdata, req);
1909 }
1910
1911 static int
1912 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1913 {
1914 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1915
1916 if (!sdata->local->ops->sched_scan_stop)
1917 return -EOPNOTSUPP;
1918
1919 return ieee80211_request_sched_scan_stop(sdata);
1920 }
1921
1922 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1923 struct cfg80211_auth_request *req)
1924 {
1925 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1926 }
1927
1928 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1929 struct cfg80211_assoc_request *req)
1930 {
1931 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1932 }
1933
1934 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1935 struct cfg80211_deauth_request *req)
1936 {
1937 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1938 }
1939
1940 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1941 struct cfg80211_disassoc_request *req)
1942 {
1943 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1944 }
1945
1946 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1947 struct cfg80211_ibss_params *params)
1948 {
1949 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1950 }
1951
1952 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1953 {
1954 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
1955 }
1956
1957 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
1958 int rate[IEEE80211_NUM_BANDS])
1959 {
1960 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1961
1962 memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(rate));
1963
1964 return 0;
1965 }
1966
1967 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1968 {
1969 struct ieee80211_local *local = wiphy_priv(wiphy);
1970 int err;
1971
1972 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1973 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1974
1975 if (err)
1976 return err;
1977 }
1978
1979 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1980 err = drv_set_coverage_class(local, wiphy->coverage_class);
1981
1982 if (err)
1983 return err;
1984 }
1985
1986 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1987 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1988
1989 if (err)
1990 return err;
1991 }
1992
1993 if (changed & WIPHY_PARAM_RETRY_SHORT)
1994 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1995 if (changed & WIPHY_PARAM_RETRY_LONG)
1996 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1997 if (changed &
1998 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1999 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2000
2001 return 0;
2002 }
2003
2004 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2005 struct wireless_dev *wdev,
2006 enum nl80211_tx_power_setting type, int mbm)
2007 {
2008 struct ieee80211_local *local = wiphy_priv(wiphy);
2009 struct ieee80211_sub_if_data *sdata;
2010
2011 if (wdev) {
2012 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2013
2014 switch (type) {
2015 case NL80211_TX_POWER_AUTOMATIC:
2016 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2017 break;
2018 case NL80211_TX_POWER_LIMITED:
2019 case NL80211_TX_POWER_FIXED:
2020 if (mbm < 0 || (mbm % 100))
2021 return -EOPNOTSUPP;
2022 sdata->user_power_level = MBM_TO_DBM(mbm);
2023 break;
2024 }
2025
2026 ieee80211_recalc_txpower(sdata);
2027
2028 return 0;
2029 }
2030
2031 switch (type) {
2032 case NL80211_TX_POWER_AUTOMATIC:
2033 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2034 break;
2035 case NL80211_TX_POWER_LIMITED:
2036 case NL80211_TX_POWER_FIXED:
2037 if (mbm < 0 || (mbm % 100))
2038 return -EOPNOTSUPP;
2039 local->user_power_level = MBM_TO_DBM(mbm);
2040 break;
2041 }
2042
2043 mutex_lock(&local->iflist_mtx);
2044 list_for_each_entry(sdata, &local->interfaces, list)
2045 sdata->user_power_level = local->user_power_level;
2046 list_for_each_entry(sdata, &local->interfaces, list)
2047 ieee80211_recalc_txpower(sdata);
2048 mutex_unlock(&local->iflist_mtx);
2049
2050 return 0;
2051 }
2052
2053 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2054 struct wireless_dev *wdev,
2055 int *dbm)
2056 {
2057 struct ieee80211_local *local = wiphy_priv(wiphy);
2058 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2059
2060 if (!local->use_chanctx)
2061 *dbm = local->hw.conf.power_level;
2062 else
2063 *dbm = sdata->vif.bss_conf.txpower;
2064
2065 return 0;
2066 }
2067
2068 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2069 const u8 *addr)
2070 {
2071 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2072
2073 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2074
2075 return 0;
2076 }
2077
2078 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2079 {
2080 struct ieee80211_local *local = wiphy_priv(wiphy);
2081
2082 drv_rfkill_poll(local);
2083 }
2084
2085 #ifdef CONFIG_NL80211_TESTMODE
2086 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2087 {
2088 struct ieee80211_local *local = wiphy_priv(wiphy);
2089
2090 if (!local->ops->testmode_cmd)
2091 return -EOPNOTSUPP;
2092
2093 return local->ops->testmode_cmd(&local->hw, data, len);
2094 }
2095
2096 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2097 struct sk_buff *skb,
2098 struct netlink_callback *cb,
2099 void *data, int len)
2100 {
2101 struct ieee80211_local *local = wiphy_priv(wiphy);
2102
2103 if (!local->ops->testmode_dump)
2104 return -EOPNOTSUPP;
2105
2106 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2107 }
2108 #endif
2109
2110 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2111 enum ieee80211_smps_mode smps_mode)
2112 {
2113 const u8 *ap;
2114 enum ieee80211_smps_mode old_req;
2115 int err;
2116
2117 lockdep_assert_held(&sdata->u.mgd.mtx);
2118
2119 old_req = sdata->u.mgd.req_smps;
2120 sdata->u.mgd.req_smps = smps_mode;
2121
2122 if (old_req == smps_mode &&
2123 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2124 return 0;
2125
2126 /*
2127 * If not associated, or current association is not an HT
2128 * association, there's no need to do anything, just store
2129 * the new value until we associate.
2130 */
2131 if (!sdata->u.mgd.associated ||
2132 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
2133 return 0;
2134
2135 ap = sdata->u.mgd.associated->bssid;
2136
2137 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2138 if (sdata->u.mgd.powersave)
2139 smps_mode = IEEE80211_SMPS_DYNAMIC;
2140 else
2141 smps_mode = IEEE80211_SMPS_OFF;
2142 }
2143
2144 /* send SM PS frame to AP */
2145 err = ieee80211_send_smps_action(sdata, smps_mode,
2146 ap, ap);
2147 if (err)
2148 sdata->u.mgd.req_smps = old_req;
2149
2150 return err;
2151 }
2152
2153 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2154 bool enabled, int timeout)
2155 {
2156 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2157 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2158
2159 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2160 return -EOPNOTSUPP;
2161
2162 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2163 return -EOPNOTSUPP;
2164
2165 if (enabled == sdata->u.mgd.powersave &&
2166 timeout == local->dynamic_ps_forced_timeout)
2167 return 0;
2168
2169 sdata->u.mgd.powersave = enabled;
2170 local->dynamic_ps_forced_timeout = timeout;
2171
2172 /* no change, but if automatic follow powersave */
2173 mutex_lock(&sdata->u.mgd.mtx);
2174 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2175 mutex_unlock(&sdata->u.mgd.mtx);
2176
2177 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2178 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2179
2180 ieee80211_recalc_ps(local, -1);
2181 ieee80211_recalc_ps_vif(sdata);
2182
2183 return 0;
2184 }
2185
2186 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2187 struct net_device *dev,
2188 s32 rssi_thold, u32 rssi_hyst)
2189 {
2190 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2191 struct ieee80211_vif *vif = &sdata->vif;
2192 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2193
2194 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2195 rssi_hyst == bss_conf->cqm_rssi_hyst)
2196 return 0;
2197
2198 bss_conf->cqm_rssi_thold = rssi_thold;
2199 bss_conf->cqm_rssi_hyst = rssi_hyst;
2200
2201 /* tell the driver upon association, unless already associated */
2202 if (sdata->u.mgd.associated &&
2203 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2204 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2205
2206 return 0;
2207 }
2208
2209 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2210 struct net_device *dev,
2211 const u8 *addr,
2212 const struct cfg80211_bitrate_mask *mask)
2213 {
2214 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2215 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2216 int i, ret;
2217
2218 if (!ieee80211_sdata_running(sdata))
2219 return -ENETDOWN;
2220
2221 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2222 ret = drv_set_bitrate_mask(local, sdata, mask);
2223 if (ret)
2224 return ret;
2225 }
2226
2227 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2228 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2229 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2230 sizeof(mask->control[i].mcs));
2231 }
2232
2233 return 0;
2234 }
2235
2236 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2237 struct ieee80211_sub_if_data *sdata,
2238 struct ieee80211_channel *channel,
2239 enum nl80211_channel_type channel_type,
2240 unsigned int duration, u64 *cookie,
2241 struct sk_buff *txskb)
2242 {
2243 struct ieee80211_roc_work *roc, *tmp;
2244 bool queued = false;
2245 int ret;
2246
2247 lockdep_assert_held(&local->mtx);
2248
2249 if (local->use_chanctx && !local->ops->remain_on_channel)
2250 return -EOPNOTSUPP;
2251
2252 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2253 if (!roc)
2254 return -ENOMEM;
2255
2256 roc->chan = channel;
2257 roc->chan_type = channel_type;
2258 roc->duration = duration;
2259 roc->req_duration = duration;
2260 roc->frame = txskb;
2261 roc->mgmt_tx_cookie = (unsigned long)txskb;
2262 roc->sdata = sdata;
2263 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2264 INIT_LIST_HEAD(&roc->dependents);
2265
2266 /* if there's one pending or we're scanning, queue this one */
2267 if (!list_empty(&local->roc_list) || local->scanning)
2268 goto out_check_combine;
2269
2270 /* if not HW assist, just queue & schedule work */
2271 if (!local->ops->remain_on_channel) {
2272 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2273 goto out_queue;
2274 }
2275
2276 /* otherwise actually kick it off here (for error handling) */
2277
2278 /*
2279 * If the duration is zero, then the driver
2280 * wouldn't actually do anything. Set it to
2281 * 10 for now.
2282 *
2283 * TODO: cancel the off-channel operation
2284 * when we get the SKB's TX status and
2285 * the wait time was zero before.
2286 */
2287 if (!duration)
2288 duration = 10;
2289
2290 ret = drv_remain_on_channel(local, sdata, channel, channel_type,
2291 duration);
2292 if (ret) {
2293 kfree(roc);
2294 return ret;
2295 }
2296
2297 roc->started = true;
2298 goto out_queue;
2299
2300 out_check_combine:
2301 list_for_each_entry(tmp, &local->roc_list, list) {
2302 if (tmp->chan != channel || tmp->chan_type != channel_type ||
2303 tmp->sdata != sdata)
2304 continue;
2305
2306 /*
2307 * Extend this ROC if possible:
2308 *
2309 * If it hasn't started yet, just increase the duration
2310 * and add the new one to the list of dependents.
2311 */
2312 if (!tmp->started) {
2313 list_add_tail(&roc->list, &tmp->dependents);
2314 tmp->duration = max(tmp->duration, roc->duration);
2315 queued = true;
2316 break;
2317 }
2318
2319 /* If it has already started, it's more difficult ... */
2320 if (local->ops->remain_on_channel) {
2321 unsigned long j = jiffies;
2322
2323 /*
2324 * In the offloaded ROC case, if it hasn't begun, add
2325 * this new one to the dependent list to be handled
2326 * when the the master one begins. If it has begun,
2327 * check that there's still a minimum time left and
2328 * if so, start this one, transmitting the frame, but
2329 * add it to the list directly after this one with a
2330 * a reduced time so we'll ask the driver to execute
2331 * it right after finishing the previous one, in the
2332 * hope that it'll also be executed right afterwards,
2333 * effectively extending the old one.
2334 * If there's no minimum time left, just add it to the
2335 * normal list.
2336 */
2337 if (!tmp->hw_begun) {
2338 list_add_tail(&roc->list, &tmp->dependents);
2339 queued = true;
2340 break;
2341 }
2342
2343 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2344 tmp->hw_start_time +
2345 msecs_to_jiffies(tmp->duration))) {
2346 int new_dur;
2347
2348 ieee80211_handle_roc_started(roc);
2349
2350 new_dur = roc->duration -
2351 jiffies_to_msecs(tmp->hw_start_time +
2352 msecs_to_jiffies(
2353 tmp->duration) -
2354 j);
2355
2356 if (new_dur > 0) {
2357 /* add right after tmp */
2358 list_add(&roc->list, &tmp->list);
2359 } else {
2360 list_add_tail(&roc->list,
2361 &tmp->dependents);
2362 }
2363 queued = true;
2364 }
2365 } else if (del_timer_sync(&tmp->work.timer)) {
2366 unsigned long new_end;
2367
2368 /*
2369 * In the software ROC case, cancel the timer, if
2370 * that fails then the finish work is already
2371 * queued/pending and thus we queue the new ROC
2372 * normally, if that succeeds then we can extend
2373 * the timer duration and TX the frame (if any.)
2374 */
2375
2376 list_add_tail(&roc->list, &tmp->dependents);
2377 queued = true;
2378
2379 new_end = jiffies + msecs_to_jiffies(roc->duration);
2380
2381 /* ok, it was started & we canceled timer */
2382 if (time_after(new_end, tmp->work.timer.expires))
2383 mod_timer(&tmp->work.timer, new_end);
2384 else
2385 add_timer(&tmp->work.timer);
2386
2387 ieee80211_handle_roc_started(roc);
2388 }
2389 break;
2390 }
2391
2392 out_queue:
2393 if (!queued)
2394 list_add_tail(&roc->list, &local->roc_list);
2395
2396 /*
2397 * cookie is either the roc cookie (for normal roc)
2398 * or the SKB (for mgmt TX)
2399 */
2400 if (!txskb) {
2401 /* local->mtx protects this */
2402 local->roc_cookie_counter++;
2403 roc->cookie = local->roc_cookie_counter;
2404 /* wow, you wrapped 64 bits ... more likely a bug */
2405 if (WARN_ON(roc->cookie == 0)) {
2406 roc->cookie = 1;
2407 local->roc_cookie_counter++;
2408 }
2409 *cookie = roc->cookie;
2410 } else {
2411 *cookie = (unsigned long)txskb;
2412 }
2413
2414 return 0;
2415 }
2416
2417 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2418 struct wireless_dev *wdev,
2419 struct ieee80211_channel *chan,
2420 enum nl80211_channel_type channel_type,
2421 unsigned int duration,
2422 u64 *cookie)
2423 {
2424 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2425 struct ieee80211_local *local = sdata->local;
2426 int ret;
2427
2428 mutex_lock(&local->mtx);
2429 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2430 duration, cookie, NULL);
2431 mutex_unlock(&local->mtx);
2432
2433 return ret;
2434 }
2435
2436 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2437 u64 cookie, bool mgmt_tx)
2438 {
2439 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2440 int ret;
2441
2442 mutex_lock(&local->mtx);
2443 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2444 struct ieee80211_roc_work *dep, *tmp2;
2445
2446 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2447 if (!mgmt_tx && dep->cookie != cookie)
2448 continue;
2449 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2450 continue;
2451 /* found dependent item -- just remove it */
2452 list_del(&dep->list);
2453 mutex_unlock(&local->mtx);
2454
2455 ieee80211_roc_notify_destroy(dep);
2456 return 0;
2457 }
2458
2459 if (!mgmt_tx && roc->cookie != cookie)
2460 continue;
2461 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2462 continue;
2463
2464 found = roc;
2465 break;
2466 }
2467
2468 if (!found) {
2469 mutex_unlock(&local->mtx);
2470 return -ENOENT;
2471 }
2472
2473 /*
2474 * We found the item to cancel, so do that. Note that it
2475 * may have dependents, which we also cancel (and send
2476 * the expired signal for.) Not doing so would be quite
2477 * tricky here, but we may need to fix it later.
2478 */
2479
2480 if (local->ops->remain_on_channel) {
2481 if (found->started) {
2482 ret = drv_cancel_remain_on_channel(local);
2483 if (WARN_ON_ONCE(ret)) {
2484 mutex_unlock(&local->mtx);
2485 return ret;
2486 }
2487 }
2488
2489 list_del(&found->list);
2490
2491 if (found->started)
2492 ieee80211_start_next_roc(local);
2493 mutex_unlock(&local->mtx);
2494
2495 ieee80211_roc_notify_destroy(found);
2496 } else {
2497 /* work may be pending so use it all the time */
2498 found->abort = true;
2499 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2500
2501 mutex_unlock(&local->mtx);
2502
2503 /* work will clean up etc */
2504 flush_delayed_work(&found->work);
2505 }
2506
2507 return 0;
2508 }
2509
2510 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2511 struct wireless_dev *wdev,
2512 u64 cookie)
2513 {
2514 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2515 struct ieee80211_local *local = sdata->local;
2516
2517 return ieee80211_cancel_roc(local, cookie, false);
2518 }
2519
2520 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2521 struct ieee80211_channel *chan, bool offchan,
2522 enum nl80211_channel_type channel_type,
2523 bool channel_type_valid, unsigned int wait,
2524 const u8 *buf, size_t len, bool no_cck,
2525 bool dont_wait_for_ack, u64 *cookie)
2526 {
2527 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2528 struct ieee80211_local *local = sdata->local;
2529 struct sk_buff *skb;
2530 struct sta_info *sta;
2531 const struct ieee80211_mgmt *mgmt = (void *)buf;
2532 bool need_offchan = false;
2533 u32 flags;
2534 int ret;
2535
2536 if (dont_wait_for_ack)
2537 flags = IEEE80211_TX_CTL_NO_ACK;
2538 else
2539 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2540 IEEE80211_TX_CTL_REQ_TX_STATUS;
2541
2542 if (no_cck)
2543 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2544
2545 switch (sdata->vif.type) {
2546 case NL80211_IFTYPE_ADHOC:
2547 if (!sdata->vif.bss_conf.ibss_joined)
2548 need_offchan = true;
2549 /* fall through */
2550 #ifdef CONFIG_MAC80211_MESH
2551 case NL80211_IFTYPE_MESH_POINT:
2552 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2553 !sdata->u.mesh.mesh_id_len)
2554 need_offchan = true;
2555 /* fall through */
2556 #endif
2557 case NL80211_IFTYPE_AP:
2558 case NL80211_IFTYPE_AP_VLAN:
2559 case NL80211_IFTYPE_P2P_GO:
2560 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2561 !ieee80211_vif_is_mesh(&sdata->vif) &&
2562 !rcu_access_pointer(sdata->bss->beacon))
2563 need_offchan = true;
2564 if (!ieee80211_is_action(mgmt->frame_control) ||
2565 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2566 break;
2567 rcu_read_lock();
2568 sta = sta_info_get(sdata, mgmt->da);
2569 rcu_read_unlock();
2570 if (!sta)
2571 return -ENOLINK;
2572 break;
2573 case NL80211_IFTYPE_STATION:
2574 case NL80211_IFTYPE_P2P_CLIENT:
2575 if (!sdata->u.mgd.associated)
2576 need_offchan = true;
2577 break;
2578 case NL80211_IFTYPE_P2P_DEVICE:
2579 need_offchan = true;
2580 break;
2581 default:
2582 return -EOPNOTSUPP;
2583 }
2584
2585 mutex_lock(&local->mtx);
2586
2587 /* Check if the operating channel is the requested channel */
2588 if (!need_offchan) {
2589 struct ieee80211_chanctx_conf *chanctx_conf;
2590
2591 rcu_read_lock();
2592 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2593
2594 if (chanctx_conf) {
2595 need_offchan = chan != chanctx_conf->channel;
2596 if (channel_type_valid &&
2597 channel_type != chanctx_conf->channel_type)
2598 need_offchan = true;
2599 } else {
2600 need_offchan = true;
2601 }
2602 rcu_read_unlock();
2603 }
2604
2605 if (need_offchan && !offchan) {
2606 ret = -EBUSY;
2607 goto out_unlock;
2608 }
2609
2610 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2611 if (!skb) {
2612 ret = -ENOMEM;
2613 goto out_unlock;
2614 }
2615 skb_reserve(skb, local->hw.extra_tx_headroom);
2616
2617 memcpy(skb_put(skb, len), buf, len);
2618
2619 IEEE80211_SKB_CB(skb)->flags = flags;
2620
2621 skb->dev = sdata->dev;
2622
2623 if (!need_offchan) {
2624 *cookie = (unsigned long) skb;
2625 ieee80211_tx_skb(sdata, skb);
2626 ret = 0;
2627 goto out_unlock;
2628 }
2629
2630 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2631 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2632 IEEE80211_SKB_CB(skb)->hw_queue =
2633 local->hw.offchannel_tx_hw_queue;
2634
2635 /* This will handle all kinds of coalescing and immediate TX */
2636 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2637 wait, cookie, skb);
2638 if (ret)
2639 kfree_skb(skb);
2640 out_unlock:
2641 mutex_unlock(&local->mtx);
2642 return ret;
2643 }
2644
2645 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2646 struct wireless_dev *wdev,
2647 u64 cookie)
2648 {
2649 struct ieee80211_local *local = wiphy_priv(wiphy);
2650
2651 return ieee80211_cancel_roc(local, cookie, true);
2652 }
2653
2654 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2655 struct wireless_dev *wdev,
2656 u16 frame_type, bool reg)
2657 {
2658 struct ieee80211_local *local = wiphy_priv(wiphy);
2659 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2660
2661 switch (frame_type) {
2662 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2663 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2664 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2665
2666 if (reg)
2667 ifibss->auth_frame_registrations++;
2668 else
2669 ifibss->auth_frame_registrations--;
2670 }
2671 break;
2672 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2673 if (reg)
2674 local->probe_req_reg++;
2675 else
2676 local->probe_req_reg--;
2677
2678 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2679 break;
2680 default:
2681 break;
2682 }
2683 }
2684
2685 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2686 {
2687 struct ieee80211_local *local = wiphy_priv(wiphy);
2688
2689 if (local->started)
2690 return -EOPNOTSUPP;
2691
2692 return drv_set_antenna(local, tx_ant, rx_ant);
2693 }
2694
2695 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2696 {
2697 struct ieee80211_local *local = wiphy_priv(wiphy);
2698
2699 return drv_get_antenna(local, tx_ant, rx_ant);
2700 }
2701
2702 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2703 {
2704 struct ieee80211_local *local = wiphy_priv(wiphy);
2705
2706 return drv_set_ringparam(local, tx, rx);
2707 }
2708
2709 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2710 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2711 {
2712 struct ieee80211_local *local = wiphy_priv(wiphy);
2713
2714 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2715 }
2716
2717 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2718 struct net_device *dev,
2719 struct cfg80211_gtk_rekey_data *data)
2720 {
2721 struct ieee80211_local *local = wiphy_priv(wiphy);
2722 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2723
2724 if (!local->ops->set_rekey_data)
2725 return -EOPNOTSUPP;
2726
2727 drv_set_rekey_data(local, sdata, data);
2728
2729 return 0;
2730 }
2731
2732 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2733 {
2734 u8 *pos = (void *)skb_put(skb, 7);
2735
2736 *pos++ = WLAN_EID_EXT_CAPABILITY;
2737 *pos++ = 5; /* len */
2738 *pos++ = 0x0;
2739 *pos++ = 0x0;
2740 *pos++ = 0x0;
2741 *pos++ = 0x0;
2742 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2743 }
2744
2745 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2746 {
2747 struct ieee80211_local *local = sdata->local;
2748 u16 capab;
2749
2750 capab = 0;
2751 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2752 return capab;
2753
2754 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2755 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2756 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2757 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2758
2759 return capab;
2760 }
2761
2762 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2763 u8 *peer, u8 *bssid)
2764 {
2765 struct ieee80211_tdls_lnkie *lnkid;
2766
2767 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2768
2769 lnkid->ie_type = WLAN_EID_LINK_ID;
2770 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2771
2772 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2773 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2774 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2775 }
2776
2777 static int
2778 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2779 u8 *peer, u8 action_code, u8 dialog_token,
2780 u16 status_code, struct sk_buff *skb)
2781 {
2782 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2783 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2784 struct ieee80211_tdls_data *tf;
2785
2786 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2787
2788 memcpy(tf->da, peer, ETH_ALEN);
2789 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2790 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2791 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2792
2793 switch (action_code) {
2794 case WLAN_TDLS_SETUP_REQUEST:
2795 tf->category = WLAN_CATEGORY_TDLS;
2796 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2797
2798 skb_put(skb, sizeof(tf->u.setup_req));
2799 tf->u.setup_req.dialog_token = dialog_token;
2800 tf->u.setup_req.capability =
2801 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2802
2803 ieee80211_add_srates_ie(sdata, skb, false, band);
2804 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2805 ieee80211_tdls_add_ext_capab(skb);
2806 break;
2807 case WLAN_TDLS_SETUP_RESPONSE:
2808 tf->category = WLAN_CATEGORY_TDLS;
2809 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2810
2811 skb_put(skb, sizeof(tf->u.setup_resp));
2812 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2813 tf->u.setup_resp.dialog_token = dialog_token;
2814 tf->u.setup_resp.capability =
2815 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2816
2817 ieee80211_add_srates_ie(sdata, skb, false, band);
2818 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2819 ieee80211_tdls_add_ext_capab(skb);
2820 break;
2821 case WLAN_TDLS_SETUP_CONFIRM:
2822 tf->category = WLAN_CATEGORY_TDLS;
2823 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2824
2825 skb_put(skb, sizeof(tf->u.setup_cfm));
2826 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2827 tf->u.setup_cfm.dialog_token = dialog_token;
2828 break;
2829 case WLAN_TDLS_TEARDOWN:
2830 tf->category = WLAN_CATEGORY_TDLS;
2831 tf->action_code = WLAN_TDLS_TEARDOWN;
2832
2833 skb_put(skb, sizeof(tf->u.teardown));
2834 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2835 break;
2836 case WLAN_TDLS_DISCOVERY_REQUEST:
2837 tf->category = WLAN_CATEGORY_TDLS;
2838 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2839
2840 skb_put(skb, sizeof(tf->u.discover_req));
2841 tf->u.discover_req.dialog_token = dialog_token;
2842 break;
2843 default:
2844 return -EINVAL;
2845 }
2846
2847 return 0;
2848 }
2849
2850 static int
2851 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2852 u8 *peer, u8 action_code, u8 dialog_token,
2853 u16 status_code, struct sk_buff *skb)
2854 {
2855 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2856 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2857 struct ieee80211_mgmt *mgmt;
2858
2859 mgmt = (void *)skb_put(skb, 24);
2860 memset(mgmt, 0, 24);
2861 memcpy(mgmt->da, peer, ETH_ALEN);
2862 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2863 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2864
2865 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2866 IEEE80211_STYPE_ACTION);
2867
2868 switch (action_code) {
2869 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2870 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2871 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2872 mgmt->u.action.u.tdls_discover_resp.action_code =
2873 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2874 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2875 dialog_token;
2876 mgmt->u.action.u.tdls_discover_resp.capability =
2877 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2878
2879 ieee80211_add_srates_ie(sdata, skb, false, band);
2880 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2881 ieee80211_tdls_add_ext_capab(skb);
2882 break;
2883 default:
2884 return -EINVAL;
2885 }
2886
2887 return 0;
2888 }
2889
2890 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2891 u8 *peer, u8 action_code, u8 dialog_token,
2892 u16 status_code, const u8 *extra_ies,
2893 size_t extra_ies_len)
2894 {
2895 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2896 struct ieee80211_local *local = sdata->local;
2897 struct sk_buff *skb = NULL;
2898 bool send_direct;
2899 int ret;
2900
2901 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2902 return -ENOTSUPP;
2903
2904 /* make sure we are in managed mode, and associated */
2905 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2906 !sdata->u.mgd.associated)
2907 return -EINVAL;
2908
2909 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2910 action_code, peer);
2911
2912 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2913 max(sizeof(struct ieee80211_mgmt),
2914 sizeof(struct ieee80211_tdls_data)) +
2915 50 + /* supported rates */
2916 7 + /* ext capab */
2917 extra_ies_len +
2918 sizeof(struct ieee80211_tdls_lnkie));
2919 if (!skb)
2920 return -ENOMEM;
2921
2922 skb_reserve(skb, local->hw.extra_tx_headroom);
2923
2924 switch (action_code) {
2925 case WLAN_TDLS_SETUP_REQUEST:
2926 case WLAN_TDLS_SETUP_RESPONSE:
2927 case WLAN_TDLS_SETUP_CONFIRM:
2928 case WLAN_TDLS_TEARDOWN:
2929 case WLAN_TDLS_DISCOVERY_REQUEST:
2930 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2931 action_code, dialog_token,
2932 status_code, skb);
2933 send_direct = false;
2934 break;
2935 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2936 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2937 dialog_token, status_code,
2938 skb);
2939 send_direct = true;
2940 break;
2941 default:
2942 ret = -ENOTSUPP;
2943 break;
2944 }
2945
2946 if (ret < 0)
2947 goto fail;
2948
2949 if (extra_ies_len)
2950 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2951
2952 /* the TDLS link IE is always added last */
2953 switch (action_code) {
2954 case WLAN_TDLS_SETUP_REQUEST:
2955 case WLAN_TDLS_SETUP_CONFIRM:
2956 case WLAN_TDLS_TEARDOWN:
2957 case WLAN_TDLS_DISCOVERY_REQUEST:
2958 /* we are the initiator */
2959 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2960 sdata->u.mgd.bssid);
2961 break;
2962 case WLAN_TDLS_SETUP_RESPONSE:
2963 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2964 /* we are the responder */
2965 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2966 sdata->u.mgd.bssid);
2967 break;
2968 default:
2969 ret = -ENOTSUPP;
2970 goto fail;
2971 }
2972
2973 if (send_direct) {
2974 ieee80211_tx_skb(sdata, skb);
2975 return 0;
2976 }
2977
2978 /*
2979 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2980 * we should default to AC_VI.
2981 */
2982 switch (action_code) {
2983 case WLAN_TDLS_SETUP_REQUEST:
2984 case WLAN_TDLS_SETUP_RESPONSE:
2985 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2986 skb->priority = 2;
2987 break;
2988 default:
2989 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2990 skb->priority = 5;
2991 break;
2992 }
2993
2994 /* disable bottom halves when entering the Tx path */
2995 local_bh_disable();
2996 ret = ieee80211_subif_start_xmit(skb, dev);
2997 local_bh_enable();
2998
2999 return ret;
3000
3001 fail:
3002 dev_kfree_skb(skb);
3003 return ret;
3004 }
3005
3006 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3007 u8 *peer, enum nl80211_tdls_operation oper)
3008 {
3009 struct sta_info *sta;
3010 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3011
3012 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3013 return -ENOTSUPP;
3014
3015 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3016 return -EINVAL;
3017
3018 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3019
3020 switch (oper) {
3021 case NL80211_TDLS_ENABLE_LINK:
3022 rcu_read_lock();
3023 sta = sta_info_get(sdata, peer);
3024 if (!sta) {
3025 rcu_read_unlock();
3026 return -ENOLINK;
3027 }
3028
3029 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3030 rcu_read_unlock();
3031 break;
3032 case NL80211_TDLS_DISABLE_LINK:
3033 return sta_info_destroy_addr(sdata, peer);
3034 case NL80211_TDLS_TEARDOWN:
3035 case NL80211_TDLS_SETUP:
3036 case NL80211_TDLS_DISCOVERY_REQ:
3037 /* We don't support in-driver setup/teardown/discovery */
3038 return -ENOTSUPP;
3039 default:
3040 return -ENOTSUPP;
3041 }
3042
3043 return 0;
3044 }
3045
3046 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3047 const u8 *peer, u64 *cookie)
3048 {
3049 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3050 struct ieee80211_local *local = sdata->local;
3051 struct ieee80211_qos_hdr *nullfunc;
3052 struct sk_buff *skb;
3053 int size = sizeof(*nullfunc);
3054 __le16 fc;
3055 bool qos;
3056 struct ieee80211_tx_info *info;
3057 struct sta_info *sta;
3058 struct ieee80211_chanctx_conf *chanctx_conf;
3059 enum ieee80211_band band;
3060
3061 rcu_read_lock();
3062 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3063 if (WARN_ON(!chanctx_conf)) {
3064 rcu_read_unlock();
3065 return -EINVAL;
3066 }
3067 band = chanctx_conf->channel->band;
3068 sta = sta_info_get(sdata, peer);
3069 if (sta) {
3070 qos = test_sta_flag(sta, WLAN_STA_WME);
3071 } else {
3072 rcu_read_unlock();
3073 return -ENOLINK;
3074 }
3075
3076 if (qos) {
3077 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3078 IEEE80211_STYPE_QOS_NULLFUNC |
3079 IEEE80211_FCTL_FROMDS);
3080 } else {
3081 size -= 2;
3082 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3083 IEEE80211_STYPE_NULLFUNC |
3084 IEEE80211_FCTL_FROMDS);
3085 }
3086
3087 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3088 if (!skb) {
3089 rcu_read_unlock();
3090 return -ENOMEM;
3091 }
3092
3093 skb->dev = dev;
3094
3095 skb_reserve(skb, local->hw.extra_tx_headroom);
3096
3097 nullfunc = (void *) skb_put(skb, size);
3098 nullfunc->frame_control = fc;
3099 nullfunc->duration_id = 0;
3100 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3101 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3102 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3103 nullfunc->seq_ctrl = 0;
3104
3105 info = IEEE80211_SKB_CB(skb);
3106
3107 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3108 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3109
3110 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3111 skb->priority = 7;
3112 if (qos)
3113 nullfunc->qos_ctrl = cpu_to_le16(7);
3114
3115 local_bh_disable();
3116 ieee80211_xmit(sdata, skb, band);
3117 local_bh_enable();
3118 rcu_read_unlock();
3119
3120 *cookie = (unsigned long) skb;
3121 return 0;
3122 }
3123
3124 static struct ieee80211_channel *
3125 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
3126 enum nl80211_channel_type *type)
3127 {
3128 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3129 struct ieee80211_chanctx_conf *chanctx_conf;
3130 struct ieee80211_channel *chan = NULL;
3131
3132 rcu_read_lock();
3133 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3134 if (chanctx_conf) {
3135 *type = chanctx_conf->channel_type;
3136 chan = chanctx_conf->channel;
3137 }
3138 rcu_read_unlock();
3139
3140 return chan;
3141 }
3142
3143 #ifdef CONFIG_PM
3144 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3145 {
3146 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3147 }
3148 #endif
3149
3150 struct cfg80211_ops mac80211_config_ops = {
3151 .add_virtual_intf = ieee80211_add_iface,
3152 .del_virtual_intf = ieee80211_del_iface,
3153 .change_virtual_intf = ieee80211_change_iface,
3154 .start_p2p_device = ieee80211_start_p2p_device,
3155 .stop_p2p_device = ieee80211_stop_p2p_device,
3156 .add_key = ieee80211_add_key,
3157 .del_key = ieee80211_del_key,
3158 .get_key = ieee80211_get_key,
3159 .set_default_key = ieee80211_config_default_key,
3160 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3161 .start_ap = ieee80211_start_ap,
3162 .change_beacon = ieee80211_change_beacon,
3163 .stop_ap = ieee80211_stop_ap,
3164 .add_station = ieee80211_add_station,
3165 .del_station = ieee80211_del_station,
3166 .change_station = ieee80211_change_station,
3167 .get_station = ieee80211_get_station,
3168 .dump_station = ieee80211_dump_station,
3169 .dump_survey = ieee80211_dump_survey,
3170 #ifdef CONFIG_MAC80211_MESH
3171 .add_mpath = ieee80211_add_mpath,
3172 .del_mpath = ieee80211_del_mpath,
3173 .change_mpath = ieee80211_change_mpath,
3174 .get_mpath = ieee80211_get_mpath,
3175 .dump_mpath = ieee80211_dump_mpath,
3176 .update_mesh_config = ieee80211_update_mesh_config,
3177 .get_mesh_config = ieee80211_get_mesh_config,
3178 .join_mesh = ieee80211_join_mesh,
3179 .leave_mesh = ieee80211_leave_mesh,
3180 #endif
3181 .change_bss = ieee80211_change_bss,
3182 .set_txq_params = ieee80211_set_txq_params,
3183 .set_monitor_channel = ieee80211_set_monitor_channel,
3184 .suspend = ieee80211_suspend,
3185 .resume = ieee80211_resume,
3186 .scan = ieee80211_scan,
3187 .sched_scan_start = ieee80211_sched_scan_start,
3188 .sched_scan_stop = ieee80211_sched_scan_stop,
3189 .auth = ieee80211_auth,
3190 .assoc = ieee80211_assoc,
3191 .deauth = ieee80211_deauth,
3192 .disassoc = ieee80211_disassoc,
3193 .join_ibss = ieee80211_join_ibss,
3194 .leave_ibss = ieee80211_leave_ibss,
3195 .set_mcast_rate = ieee80211_set_mcast_rate,
3196 .set_wiphy_params = ieee80211_set_wiphy_params,
3197 .set_tx_power = ieee80211_set_tx_power,
3198 .get_tx_power = ieee80211_get_tx_power,
3199 .set_wds_peer = ieee80211_set_wds_peer,
3200 .rfkill_poll = ieee80211_rfkill_poll,
3201 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3202 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3203 .set_power_mgmt = ieee80211_set_power_mgmt,
3204 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3205 .remain_on_channel = ieee80211_remain_on_channel,
3206 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3207 .mgmt_tx = ieee80211_mgmt_tx,
3208 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3209 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3210 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3211 .set_antenna = ieee80211_set_antenna,
3212 .get_antenna = ieee80211_get_antenna,
3213 .set_ringparam = ieee80211_set_ringparam,
3214 .get_ringparam = ieee80211_get_ringparam,
3215 .set_rekey_data = ieee80211_set_rekey_data,
3216 .tdls_oper = ieee80211_tdls_oper,
3217 .tdls_mgmt = ieee80211_tdls_mgmt,
3218 .probe_client = ieee80211_probe_client,
3219 .set_noack_map = ieee80211_set_noack_map,
3220 #ifdef CONFIG_PM
3221 .set_wakeup = ieee80211_set_wakeup,
3222 #endif
3223 .get_et_sset_count = ieee80211_get_et_sset_count,
3224 .get_et_stats = ieee80211_get_et_stats,
3225 .get_et_strings = ieee80211_get_et_strings,
3226 .get_channel = ieee80211_cfg_get_channel,
3227 };
Linux kernel - Deliverables
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