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mac80211: Fix tx queue handling during scans
[linux-2.6/btrfs-unstable.git] / net / mac80211 / cfg.c
blobe3dec80cf617a0d1b5671d66b403a6a75fd29979
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 /*
168 * The ASSOC test makes sure the driver is ready to
169 * receive the key. When wpa_supplicant has roamed
170 * using FT, it attempts to set the key before
171 * association has completed, this rejects that attempt
172 * so it will set the key again after assocation.
173 *
174 * TODO: accept the key if we have a station entry and
175 * add it to the device after the station.
176 */
177 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
178 ieee80211_key_free(sdata->local, key);
179 err = -ENOENT;
180 goto out_unlock;
181 }
182 }
183
184 switch (sdata->vif.type) {
185 case NL80211_IFTYPE_STATION:
186 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
187 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
188 break;
189 case NL80211_IFTYPE_AP:
190 case NL80211_IFTYPE_AP_VLAN:
191 /* Keys without a station are used for TX only */
192 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
193 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
194 break;
195 case NL80211_IFTYPE_ADHOC:
196 /* no MFP (yet) */
197 break;
198 case NL80211_IFTYPE_MESH_POINT:
199 #ifdef CONFIG_MAC80211_MESH
200 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
201 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
202 break;
203 #endif
204 case NL80211_IFTYPE_WDS:
205 case NL80211_IFTYPE_MONITOR:
206 case NL80211_IFTYPE_P2P_DEVICE:
207 case NL80211_IFTYPE_UNSPECIFIED:
208 case NUM_NL80211_IFTYPES:
209 case NL80211_IFTYPE_P2P_CLIENT:
210 case NL80211_IFTYPE_P2P_GO:
211 /* shouldn't happen */
212 WARN_ON_ONCE(1);
213 break;
214 }
215
216 err = ieee80211_key_link(key, sdata, sta);
217 if (err)
218 ieee80211_key_free(sdata->local, key);
219
220 out_unlock:
221 mutex_unlock(&sdata->local->sta_mtx);
222
223 return err;
224 }
225
226 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
227 u8 key_idx, bool pairwise, const u8 *mac_addr)
228 {
229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
230 struct ieee80211_local *local = sdata->local;
231 struct sta_info *sta;
232 struct ieee80211_key *key = NULL;
233 int ret;
234
235 mutex_lock(&local->sta_mtx);
236 mutex_lock(&local->key_mtx);
237
238 if (mac_addr) {
239 ret = -ENOENT;
240
241 sta = sta_info_get_bss(sdata, mac_addr);
242 if (!sta)
243 goto out_unlock;
244
245 if (pairwise)
246 key = key_mtx_dereference(local, sta->ptk);
247 else
248 key = key_mtx_dereference(local, sta->gtk[key_idx]);
249 } else
250 key = key_mtx_dereference(local, sdata->keys[key_idx]);
251
252 if (!key) {
253 ret = -ENOENT;
254 goto out_unlock;
255 }
256
257 __ieee80211_key_free(key);
258
259 ret = 0;
260 out_unlock:
261 mutex_unlock(&local->key_mtx);
262 mutex_unlock(&local->sta_mtx);
263
264 return ret;
265 }
266
267 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
268 u8 key_idx, bool pairwise, const u8 *mac_addr,
269 void *cookie,
270 void (*callback)(void *cookie,
271 struct key_params *params))
272 {
273 struct ieee80211_sub_if_data *sdata;
274 struct sta_info *sta = NULL;
275 u8 seq[6] = {0};
276 struct key_params params;
277 struct ieee80211_key *key = NULL;
278 u64 pn64;
279 u32 iv32;
280 u16 iv16;
281 int err = -ENOENT;
282
283 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
284
285 rcu_read_lock();
286
287 if (mac_addr) {
288 sta = sta_info_get_bss(sdata, mac_addr);
289 if (!sta)
290 goto out;
291
292 if (pairwise)
293 key = rcu_dereference(sta->ptk);
294 else if (key_idx < NUM_DEFAULT_KEYS)
295 key = rcu_dereference(sta->gtk[key_idx]);
296 } else
297 key = rcu_dereference(sdata->keys[key_idx]);
298
299 if (!key)
300 goto out;
301
302 memset(&params, 0, sizeof(params));
303
304 params.cipher = key->conf.cipher;
305
306 switch (key->conf.cipher) {
307 case WLAN_CIPHER_SUITE_TKIP:
308 iv32 = key->u.tkip.tx.iv32;
309 iv16 = key->u.tkip.tx.iv16;
310
311 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
312 drv_get_tkip_seq(sdata->local,
313 key->conf.hw_key_idx,
314 &iv32, &iv16);
315
316 seq[0] = iv16 & 0xff;
317 seq[1] = (iv16 >> 8) & 0xff;
318 seq[2] = iv32 & 0xff;
319 seq[3] = (iv32 >> 8) & 0xff;
320 seq[4] = (iv32 >> 16) & 0xff;
321 seq[5] = (iv32 >> 24) & 0xff;
322 params.seq = seq;
323 params.seq_len = 6;
324 break;
325 case WLAN_CIPHER_SUITE_CCMP:
326 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
327 seq[0] = pn64;
328 seq[1] = pn64 >> 8;
329 seq[2] = pn64 >> 16;
330 seq[3] = pn64 >> 24;
331 seq[4] = pn64 >> 32;
332 seq[5] = pn64 >> 40;
333 params.seq = seq;
334 params.seq_len = 6;
335 break;
336 case WLAN_CIPHER_SUITE_AES_CMAC:
337 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
338 seq[0] = pn64;
339 seq[1] = pn64 >> 8;
340 seq[2] = pn64 >> 16;
341 seq[3] = pn64 >> 24;
342 seq[4] = pn64 >> 32;
343 seq[5] = pn64 >> 40;
344 params.seq = seq;
345 params.seq_len = 6;
346 break;
347 }
348
349 params.key = key->conf.key;
350 params.key_len = key->conf.keylen;
351
352 callback(cookie, &params);
353 err = 0;
354
355 out:
356 rcu_read_unlock();
357 return err;
358 }
359
360 static int ieee80211_config_default_key(struct wiphy *wiphy,
361 struct net_device *dev,
362 u8 key_idx, bool uni,
363 bool multi)
364 {
365 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
366
367 ieee80211_set_default_key(sdata, key_idx, uni, multi);
368
369 return 0;
370 }
371
372 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
373 struct net_device *dev,
374 u8 key_idx)
375 {
376 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
377
378 ieee80211_set_default_mgmt_key(sdata, key_idx);
379
380 return 0;
381 }
382
383 void sta_set_rate_info_tx(struct sta_info *sta,
384 const struct ieee80211_tx_rate *rate,
385 struct rate_info *rinfo)
386 {
387 rinfo->flags = 0;
388 if (rate->flags & IEEE80211_TX_RC_MCS) {
389 rinfo->flags |= RATE_INFO_FLAGS_MCS;
390 rinfo->mcs = rate->idx;
391 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
392 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
393 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
394 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
395 } else {
396 struct ieee80211_supported_band *sband;
397 sband = sta->local->hw.wiphy->bands[
398 ieee80211_get_sdata_band(sta->sdata)];
399 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
400 }
401 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
402 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
403 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
404 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
405 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
406 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
407 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
408 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
409 }
410
411 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
412 {
413 rinfo->flags = 0;
414
415 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
416 rinfo->flags |= RATE_INFO_FLAGS_MCS;
417 rinfo->mcs = sta->last_rx_rate_idx;
418 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
419 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
420 rinfo->nss = sta->last_rx_rate_vht_nss;
421 rinfo->mcs = sta->last_rx_rate_idx;
422 } else {
423 struct ieee80211_supported_band *sband;
424
425 sband = sta->local->hw.wiphy->bands[
426 ieee80211_get_sdata_band(sta->sdata)];
427 rinfo->legacy =
428 sband->bitrates[sta->last_rx_rate_idx].bitrate;
429 }
430
431 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
432 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
433 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
434 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
435 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
436 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
437 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
438 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
439 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
440 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
441 }
442
443 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
444 {
445 struct ieee80211_sub_if_data *sdata = sta->sdata;
446 struct ieee80211_local *local = sdata->local;
447 struct timespec uptime;
448
449 sinfo->generation = sdata->local->sta_generation;
450
451 sinfo->filled = STATION_INFO_INACTIVE_TIME |
452 STATION_INFO_RX_BYTES |
453 STATION_INFO_TX_BYTES |
454 STATION_INFO_RX_PACKETS |
455 STATION_INFO_TX_PACKETS |
456 STATION_INFO_TX_RETRIES |
457 STATION_INFO_TX_FAILED |
458 STATION_INFO_TX_BITRATE |
459 STATION_INFO_RX_BITRATE |
460 STATION_INFO_RX_DROP_MISC |
461 STATION_INFO_BSS_PARAM |
462 STATION_INFO_CONNECTED_TIME |
463 STATION_INFO_STA_FLAGS |
464 STATION_INFO_BEACON_LOSS_COUNT;
465
466 do_posix_clock_monotonic_gettime(&uptime);
467 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
468
469 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
470 sinfo->rx_bytes = sta->rx_bytes;
471 sinfo->tx_bytes = sta->tx_bytes;
472 sinfo->rx_packets = sta->rx_packets;
473 sinfo->tx_packets = sta->tx_packets;
474 sinfo->tx_retries = sta->tx_retry_count;
475 sinfo->tx_failed = sta->tx_retry_failed;
476 sinfo->rx_dropped_misc = sta->rx_dropped;
477 sinfo->beacon_loss_count = sta->beacon_loss_count;
478
479 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
480 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
481 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
482 if (!local->ops->get_rssi ||
483 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
484 sinfo->signal = (s8)sta->last_signal;
485 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
486 }
487
488 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
489 sta_set_rate_info_rx(sta, &sinfo->rxrate);
490
491 if (ieee80211_vif_is_mesh(&sdata->vif)) {
492 #ifdef CONFIG_MAC80211_MESH
493 sinfo->filled |= STATION_INFO_LLID |
494 STATION_INFO_PLID |
495 STATION_INFO_PLINK_STATE |
496 STATION_INFO_LOCAL_PM |
497 STATION_INFO_PEER_PM |
498 STATION_INFO_NONPEER_PM;
499
500 sinfo->llid = le16_to_cpu(sta->llid);
501 sinfo->plid = le16_to_cpu(sta->plid);
502 sinfo->plink_state = sta->plink_state;
503 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
504 sinfo->filled |= STATION_INFO_T_OFFSET;
505 sinfo->t_offset = sta->t_offset;
506 }
507 sinfo->local_pm = sta->local_pm;
508 sinfo->peer_pm = sta->peer_pm;
509 sinfo->nonpeer_pm = sta->nonpeer_pm;
510 #endif
511 }
512
513 sinfo->bss_param.flags = 0;
514 if (sdata->vif.bss_conf.use_cts_prot)
515 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
516 if (sdata->vif.bss_conf.use_short_preamble)
517 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
518 if (sdata->vif.bss_conf.use_short_slot)
519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
520 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
521 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
522
523 sinfo->sta_flags.set = 0;
524 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
525 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
526 BIT(NL80211_STA_FLAG_WME) |
527 BIT(NL80211_STA_FLAG_MFP) |
528 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
529 BIT(NL80211_STA_FLAG_ASSOCIATED) |
530 BIT(NL80211_STA_FLAG_TDLS_PEER);
531 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
532 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
533 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
534 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
535 if (test_sta_flag(sta, WLAN_STA_WME))
536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
537 if (test_sta_flag(sta, WLAN_STA_MFP))
538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
539 if (test_sta_flag(sta, WLAN_STA_AUTH))
540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
541 if (test_sta_flag(sta, WLAN_STA_ASSOC))
542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
543 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
545 }
546
547 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
548 "rx_packets", "rx_bytes", "wep_weak_iv_count",
549 "rx_duplicates", "rx_fragments", "rx_dropped",
550 "tx_packets", "tx_bytes", "tx_fragments",
551 "tx_filtered", "tx_retry_failed", "tx_retries",
552 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
553 "channel", "noise", "ch_time", "ch_time_busy",
554 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
555 };
556 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
557
558 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
559 struct net_device *dev,
560 int sset)
561 {
562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
563 int rv = 0;
564
565 if (sset == ETH_SS_STATS)
566 rv += STA_STATS_LEN;
567
568 rv += drv_get_et_sset_count(sdata, sset);
569
570 if (rv == 0)
571 return -EOPNOTSUPP;
572 return rv;
573 }
574
575 static void ieee80211_get_et_stats(struct wiphy *wiphy,
576 struct net_device *dev,
577 struct ethtool_stats *stats,
578 u64 *data)
579 {
580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
581 struct ieee80211_chanctx_conf *chanctx_conf;
582 struct ieee80211_channel *channel;
583 struct sta_info *sta;
584 struct ieee80211_local *local = sdata->local;
585 struct station_info sinfo;
586 struct survey_info survey;
587 int i, q;
588 #define STA_STATS_SURVEY_LEN 7
589
590 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
591
592 #define ADD_STA_STATS(sta) \
593 do { \
594 data[i++] += sta->rx_packets; \
595 data[i++] += sta->rx_bytes; \
596 data[i++] += sta->wep_weak_iv_count; \
597 data[i++] += sta->num_duplicates; \
598 data[i++] += sta->rx_fragments; \
599 data[i++] += sta->rx_dropped; \
600 \
601 data[i++] += sta->tx_packets; \
602 data[i++] += sta->tx_bytes; \
603 data[i++] += sta->tx_fragments; \
604 data[i++] += sta->tx_filtered_count; \
605 data[i++] += sta->tx_retry_failed; \
606 data[i++] += sta->tx_retry_count; \
607 data[i++] += sta->beacon_loss_count; \
608 } while (0)
609
610 /* For Managed stations, find the single station based on BSSID
611 * and use that. For interface types, iterate through all available
612 * stations and add stats for any station that is assigned to this
613 * network device.
614 */
615
616 mutex_lock(&local->sta_mtx);
617
618 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
619 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
620
621 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
622 goto do_survey;
623
624 i = 0;
625 ADD_STA_STATS(sta);
626
627 data[i++] = sta->sta_state;
628
629 sinfo.filled = 0;
630 sta_set_sinfo(sta, &sinfo);
631
632 if (sinfo.filled & STATION_INFO_TX_BITRATE)
633 data[i] = 100000 *
634 cfg80211_calculate_bitrate(&sinfo.txrate);
635 i++;
636 if (sinfo.filled & STATION_INFO_RX_BITRATE)
637 data[i] = 100000 *
638 cfg80211_calculate_bitrate(&sinfo.rxrate);
639 i++;
640
641 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
642 data[i] = (u8)sinfo.signal_avg;
643 i++;
644 } else {
645 list_for_each_entry(sta, &local->sta_list, list) {
646 /* Make sure this station belongs to the proper dev */
647 if (sta->sdata->dev != dev)
648 continue;
649
650 i = 0;
651 ADD_STA_STATS(sta);
652 }
653 }
654
655 do_survey:
656 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
657 /* Get survey stats for current channel */
658 survey.filled = 0;
659
660 rcu_read_lock();
661 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
662 if (chanctx_conf)
663 channel = chanctx_conf->def.chan;
664 else
665 channel = NULL;
666 rcu_read_unlock();
667
668 if (channel) {
669 q = 0;
670 do {
671 survey.filled = 0;
672 if (drv_get_survey(local, q, &survey) != 0) {
673 survey.filled = 0;
674 break;
675 }
676 q++;
677 } while (channel != survey.channel);
678 }
679
680 if (survey.filled)
681 data[i++] = survey.channel->center_freq;
682 else
683 data[i++] = 0;
684 if (survey.filled & SURVEY_INFO_NOISE_DBM)
685 data[i++] = (u8)survey.noise;
686 else
687 data[i++] = -1LL;
688 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
689 data[i++] = survey.channel_time;
690 else
691 data[i++] = -1LL;
692 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
693 data[i++] = survey.channel_time_busy;
694 else
695 data[i++] = -1LL;
696 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
697 data[i++] = survey.channel_time_ext_busy;
698 else
699 data[i++] = -1LL;
700 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
701 data[i++] = survey.channel_time_rx;
702 else
703 data[i++] = -1LL;
704 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
705 data[i++] = survey.channel_time_tx;
706 else
707 data[i++] = -1LL;
708
709 mutex_unlock(&local->sta_mtx);
710
711 if (WARN_ON(i != STA_STATS_LEN))
712 return;
713
714 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
715 }
716
717 static void ieee80211_get_et_strings(struct wiphy *wiphy,
718 struct net_device *dev,
719 u32 sset, u8 *data)
720 {
721 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
722 int sz_sta_stats = 0;
723
724 if (sset == ETH_SS_STATS) {
725 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
726 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
727 }
728 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
729 }
730
731 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
732 int idx, u8 *mac, struct station_info *sinfo)
733 {
734 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
735 struct ieee80211_local *local = sdata->local;
736 struct sta_info *sta;
737 int ret = -ENOENT;
738
739 mutex_lock(&local->sta_mtx);
740
741 sta = sta_info_get_by_idx(sdata, idx);
742 if (sta) {
743 ret = 0;
744 memcpy(mac, sta->sta.addr, ETH_ALEN);
745 sta_set_sinfo(sta, sinfo);
746 }
747
748 mutex_unlock(&local->sta_mtx);
749
750 return ret;
751 }
752
753 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
754 int idx, struct survey_info *survey)
755 {
756 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
757
758 return drv_get_survey(local, idx, survey);
759 }
760
761 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
762 u8 *mac, struct station_info *sinfo)
763 {
764 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
765 struct ieee80211_local *local = sdata->local;
766 struct sta_info *sta;
767 int ret = -ENOENT;
768
769 mutex_lock(&local->sta_mtx);
770
771 sta = sta_info_get_bss(sdata, mac);
772 if (sta) {
773 ret = 0;
774 sta_set_sinfo(sta, sinfo);
775 }
776
777 mutex_unlock(&local->sta_mtx);
778
779 return ret;
780 }
781
782 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
783 struct cfg80211_chan_def *chandef)
784 {
785 struct ieee80211_local *local = wiphy_priv(wiphy);
786 struct ieee80211_sub_if_data *sdata;
787 int ret = 0;
788
789 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
790 return 0;
791
792 mutex_lock(&local->iflist_mtx);
793 if (local->use_chanctx) {
794 sdata = rcu_dereference_protected(
795 local->monitor_sdata,
796 lockdep_is_held(&local->iflist_mtx));
797 if (sdata) {
798 ieee80211_vif_release_channel(sdata);
799 ret = ieee80211_vif_use_channel(sdata, chandef,
800 IEEE80211_CHANCTX_EXCLUSIVE);
801 }
802 } else if (local->open_count == local->monitors) {
803 local->_oper_channel = chandef->chan;
804 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
805 ieee80211_hw_config(local, 0);
806 }
807
808 if (ret == 0)
809 local->monitor_chandef = *chandef;
810 mutex_unlock(&local->iflist_mtx);
811
812 return ret;
813 }
814
815 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
816 const u8 *resp, size_t resp_len)
817 {
818 struct probe_resp *new, *old;
819
820 if (!resp || !resp_len)
821 return 1;
822
823 old = rtnl_dereference(sdata->u.ap.probe_resp);
824
825 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
826 if (!new)
827 return -ENOMEM;
828
829 new->len = resp_len;
830 memcpy(new->data, resp, resp_len);
831
832 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
833 if (old)
834 kfree_rcu(old, rcu_head);
835
836 return 0;
837 }
838
839 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
840 struct cfg80211_beacon_data *params)
841 {
842 struct beacon_data *new, *old;
843 int new_head_len, new_tail_len;
844 int size, err;
845 u32 changed = BSS_CHANGED_BEACON;
846
847 old = rtnl_dereference(sdata->u.ap.beacon);
848
849 /* Need to have a beacon head if we don't have one yet */
850 if (!params->head && !old)
851 return -EINVAL;
852
853 /* new or old head? */
854 if (params->head)
855 new_head_len = params->head_len;
856 else
857 new_head_len = old->head_len;
858
859 /* new or old tail? */
860 if (params->tail || !old)
861 /* params->tail_len will be zero for !params->tail */
862 new_tail_len = params->tail_len;
863 else
864 new_tail_len = old->tail_len;
865
866 size = sizeof(*new) + new_head_len + new_tail_len;
867
868 new = kzalloc(size, GFP_KERNEL);
869 if (!new)
870 return -ENOMEM;
871
872 /* start filling the new info now */
873
874 /*
875 * pointers go into the block we allocated,
876 * memory is | beacon_data | head | tail |
877 */
878 new->head = ((u8 *) new) + sizeof(*new);
879 new->tail = new->head + new_head_len;
880 new->head_len = new_head_len;
881 new->tail_len = new_tail_len;
882
883 /* copy in head */
884 if (params->head)
885 memcpy(new->head, params->head, new_head_len);
886 else
887 memcpy(new->head, old->head, new_head_len);
888
889 /* copy in optional tail */
890 if (params->tail)
891 memcpy(new->tail, params->tail, new_tail_len);
892 else
893 if (old)
894 memcpy(new->tail, old->tail, new_tail_len);
895
896 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
897 params->probe_resp_len);
898 if (err < 0)
899 return err;
900 if (err == 0)
901 changed |= BSS_CHANGED_AP_PROBE_RESP;
902
903 rcu_assign_pointer(sdata->u.ap.beacon, new);
904
905 if (old)
906 kfree_rcu(old, rcu_head);
907
908 return changed;
909 }
910
911 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
912 struct cfg80211_ap_settings *params)
913 {
914 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
915 struct beacon_data *old;
916 struct ieee80211_sub_if_data *vlan;
917 u32 changed = BSS_CHANGED_BEACON_INT |
918 BSS_CHANGED_BEACON_ENABLED |
919 BSS_CHANGED_BEACON |
920 BSS_CHANGED_SSID |
921 BSS_CHANGED_P2P_PS;
922 int err;
923
924 old = rtnl_dereference(sdata->u.ap.beacon);
925 if (old)
926 return -EALREADY;
927
928 /* TODO: make hostapd tell us what it wants */
929 sdata->smps_mode = IEEE80211_SMPS_OFF;
930 sdata->needed_rx_chains = sdata->local->rx_chains;
931
932 err = ieee80211_vif_use_channel(sdata, &params->chandef,
933 IEEE80211_CHANCTX_SHARED);
934 if (err)
935 return err;
936 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
937
938 /*
939 * Apply control port protocol, this allows us to
940 * not encrypt dynamic WEP control frames.
941 */
942 sdata->control_port_protocol = params->crypto.control_port_ethertype;
943 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
944 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
945 vlan->control_port_protocol =
946 params->crypto.control_port_ethertype;
947 vlan->control_port_no_encrypt =
948 params->crypto.control_port_no_encrypt;
949 }
950
951 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
952 sdata->vif.bss_conf.dtim_period = params->dtim_period;
953 sdata->vif.bss_conf.enable_beacon = true;
954
955 sdata->vif.bss_conf.ssid_len = params->ssid_len;
956 if (params->ssid_len)
957 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
958 params->ssid_len);
959 sdata->vif.bss_conf.hidden_ssid =
960 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
961
962 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
963 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
964
965 err = ieee80211_assign_beacon(sdata, &params->beacon);
966 if (err < 0)
967 return err;
968 changed |= err;
969
970 err = drv_start_ap(sdata->local, sdata);
971 if (err) {
972 old = rtnl_dereference(sdata->u.ap.beacon);
973 if (old)
974 kfree_rcu(old, rcu_head);
975 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
976 return err;
977 }
978
979 ieee80211_bss_info_change_notify(sdata, changed);
980
981 netif_carrier_on(dev);
982 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
983 netif_carrier_on(vlan->dev);
984
985 return 0;
986 }
987
988 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
989 struct cfg80211_beacon_data *params)
990 {
991 struct ieee80211_sub_if_data *sdata;
992 struct beacon_data *old;
993 int err;
994
995 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
996
997 old = rtnl_dereference(sdata->u.ap.beacon);
998 if (!old)
999 return -ENOENT;
1000
1001 err = ieee80211_assign_beacon(sdata, params);
1002 if (err < 0)
1003 return err;
1004 ieee80211_bss_info_change_notify(sdata, err);
1005 return 0;
1006 }
1007
1008 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1009 {
1010 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1011 struct ieee80211_sub_if_data *vlan;
1012 struct ieee80211_local *local = sdata->local;
1013 struct beacon_data *old_beacon;
1014 struct probe_resp *old_probe_resp;
1015
1016 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1017 if (!old_beacon)
1018 return -ENOENT;
1019 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1020
1021 /* turn off carrier for this interface and dependent VLANs */
1022 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1023 netif_carrier_off(vlan->dev);
1024 netif_carrier_off(dev);
1025
1026 /* remove beacon and probe response */
1027 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1028 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1029 kfree_rcu(old_beacon, rcu_head);
1030 if (old_probe_resp)
1031 kfree_rcu(old_probe_resp, rcu_head);
1032
1033 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1034 sta_info_flush_defer(vlan);
1035 sta_info_flush_defer(sdata);
1036 rcu_barrier();
1037 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1038 sta_info_flush_cleanup(vlan);
1039 sta_info_flush_cleanup(sdata);
1040
1041 sdata->vif.bss_conf.enable_beacon = false;
1042 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1043 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1044
1045 drv_stop_ap(sdata->local, sdata);
1046
1047 /* free all potentially still buffered bcast frames */
1048 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1049 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1050
1051 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1052 ieee80211_vif_release_channel(sdata);
1053
1054 return 0;
1055 }
1056
1057 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1058 struct iapp_layer2_update {
1059 u8 da[ETH_ALEN]; /* broadcast */
1060 u8 sa[ETH_ALEN]; /* STA addr */
1061 __be16 len; /* 6 */
1062 u8 dsap; /* 0 */
1063 u8 ssap; /* 0 */
1064 u8 control;
1065 u8 xid_info[3];
1066 } __packed;
1067
1068 static void ieee80211_send_layer2_update(struct sta_info *sta)
1069 {
1070 struct iapp_layer2_update *msg;
1071 struct sk_buff *skb;
1072
1073 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1074 * bridge devices */
1075
1076 skb = dev_alloc_skb(sizeof(*msg));
1077 if (!skb)
1078 return;
1079 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1080
1081 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1082 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1083
1084 eth_broadcast_addr(msg->da);
1085 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1086 msg->len = htons(6);
1087 msg->dsap = 0;
1088 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1089 msg->control = 0xaf; /* XID response lsb.1111F101.
1090 * F=0 (no poll command; unsolicited frame) */
1091 msg->xid_info[0] = 0x81; /* XID format identifier */
1092 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1093 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1094
1095 skb->dev = sta->sdata->dev;
1096 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1097 memset(skb->cb, 0, sizeof(skb->cb));
1098 netif_rx_ni(skb);
1099 }
1100
1101 static int sta_apply_auth_flags(struct ieee80211_local *local,
1102 struct sta_info *sta,
1103 u32 mask, u32 set)
1104 {
1105 int ret;
1106
1107 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1108 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1109 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1110 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1111 if (ret)
1112 return ret;
1113 }
1114
1115 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1116 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1117 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1118 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1119 if (ret)
1120 return ret;
1121 }
1122
1123 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1124 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1125 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1126 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1127 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1128 else
1129 ret = 0;
1130 if (ret)
1131 return ret;
1132 }
1133
1134 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1135 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1136 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1137 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1138 if (ret)
1139 return ret;
1140 }
1141
1142 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1143 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1144 test_sta_flag(sta, WLAN_STA_AUTH)) {
1145 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1146 if (ret)
1147 return ret;
1148 }
1149
1150 return 0;
1151 }
1152
1153 static int sta_apply_parameters(struct ieee80211_local *local,
1154 struct sta_info *sta,
1155 struct station_parameters *params)
1156 {
1157 int ret = 0;
1158 u32 rates;
1159 int i, j;
1160 struct ieee80211_supported_band *sband;
1161 struct ieee80211_sub_if_data *sdata = sta->sdata;
1162 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1163 u32 mask, set;
1164
1165 sband = local->hw.wiphy->bands[band];
1166
1167 mask = params->sta_flags_mask;
1168 set = params->sta_flags_set;
1169
1170 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1171 /*
1172 * In mesh mode, ASSOCIATED isn't part of the nl80211
1173 * API but must follow AUTHENTICATED for driver state.
1174 */
1175 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1176 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1177 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1178 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1179 }
1180
1181 ret = sta_apply_auth_flags(local, sta, mask, set);
1182 if (ret)
1183 return ret;
1184
1185 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1186 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1187 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1188 else
1189 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1190 }
1191
1192 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1193 if (set & BIT(NL80211_STA_FLAG_WME)) {
1194 set_sta_flag(sta, WLAN_STA_WME);
1195 sta->sta.wme = true;
1196 } else {
1197 clear_sta_flag(sta, WLAN_STA_WME);
1198 sta->sta.wme = false;
1199 }
1200 }
1201
1202 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1203 if (set & BIT(NL80211_STA_FLAG_MFP))
1204 set_sta_flag(sta, WLAN_STA_MFP);
1205 else
1206 clear_sta_flag(sta, WLAN_STA_MFP);
1207 }
1208
1209 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1210 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1211 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1212 else
1213 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1214 }
1215
1216 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1217 sta->sta.uapsd_queues = params->uapsd_queues;
1218 sta->sta.max_sp = params->max_sp;
1219 }
1220
1221 /*
1222 * cfg80211 validates this (1-2007) and allows setting the AID
1223 * only when creating a new station entry
1224 */
1225 if (params->aid)
1226 sta->sta.aid = params->aid;
1227
1228 /*
1229 * Some of the following updates would be racy if called on an
1230 * existing station, via ieee80211_change_station(). However,
1231 * all such changes are rejected by cfg80211 except for updates
1232 * changing the supported rates on an existing but not yet used
1233 * TDLS peer.
1234 */
1235
1236 if (params->listen_interval >= 0)
1237 sta->listen_interval = params->listen_interval;
1238
1239 if (params->supported_rates) {
1240 rates = 0;
1241
1242 for (i = 0; i < params->supported_rates_len; i++) {
1243 int rate = (params->supported_rates[i] & 0x7f) * 5;
1244 for (j = 0; j < sband->n_bitrates; j++) {
1245 if (sband->bitrates[j].bitrate == rate)
1246 rates |= BIT(j);
1247 }
1248 }
1249 sta->sta.supp_rates[band] = rates;
1250 }
1251
1252 if (params->ht_capa)
1253 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1254 params->ht_capa,
1255 &sta->sta.ht_cap);
1256
1257 if (params->vht_capa)
1258 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1259 params->vht_capa,
1260 &sta->sta.vht_cap);
1261
1262 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1263 #ifdef CONFIG_MAC80211_MESH
1264 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) {
1265 u32 changed = 0;
1266
1267 switch (params->plink_state) {
1268 case NL80211_PLINK_ESTAB:
1269 if (sta->plink_state != NL80211_PLINK_ESTAB)
1270 changed = mesh_plink_inc_estab_count(
1271 sdata);
1272 sta->plink_state = params->plink_state;
1273
1274 ieee80211_mps_sta_status_update(sta);
1275 ieee80211_mps_set_sta_local_pm(sta,
1276 sdata->u.mesh.mshcfg.power_mode);
1277 break;
1278 case NL80211_PLINK_LISTEN:
1279 case NL80211_PLINK_BLOCKED:
1280 case NL80211_PLINK_OPN_SNT:
1281 case NL80211_PLINK_OPN_RCVD:
1282 case NL80211_PLINK_CNF_RCVD:
1283 case NL80211_PLINK_HOLDING:
1284 if (sta->plink_state == NL80211_PLINK_ESTAB)
1285 changed = mesh_plink_dec_estab_count(
1286 sdata);
1287 sta->plink_state = params->plink_state;
1288
1289 ieee80211_mps_sta_status_update(sta);
1290 ieee80211_mps_local_status_update(sdata);
1291 break;
1292 default:
1293 /* nothing */
1294 break;
1295 }
1296 ieee80211_bss_info_change_notify(sdata, changed);
1297 } else {
1298 switch (params->plink_action) {
1299 case PLINK_ACTION_OPEN:
1300 mesh_plink_open(sta);
1301 break;
1302 case PLINK_ACTION_BLOCK:
1303 mesh_plink_block(sta);
1304 break;
1305 }
1306 }
1307
1308 if (params->local_pm)
1309 ieee80211_mps_set_sta_local_pm(sta, params->local_pm);
1310 #endif
1311 }
1312
1313 return 0;
1314 }
1315
1316 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1317 u8 *mac, struct station_parameters *params)
1318 {
1319 struct ieee80211_local *local = wiphy_priv(wiphy);
1320 struct sta_info *sta;
1321 struct ieee80211_sub_if_data *sdata;
1322 int err;
1323 int layer2_update;
1324
1325 if (params->vlan) {
1326 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1327
1328 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1329 sdata->vif.type != NL80211_IFTYPE_AP)
1330 return -EINVAL;
1331 } else
1332 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1333
1334 if (ether_addr_equal(mac, sdata->vif.addr))
1335 return -EINVAL;
1336
1337 if (is_multicast_ether_addr(mac))
1338 return -EINVAL;
1339
1340 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1341 if (!sta)
1342 return -ENOMEM;
1343
1344 /*
1345 * defaults -- if userspace wants something else we'll
1346 * change it accordingly in sta_apply_parameters()
1347 */
1348 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1349 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1350
1351 err = sta_apply_parameters(local, sta, params);
1352 if (err) {
1353 sta_info_free(local, sta);
1354 return err;
1355 }
1356
1357 /*
1358 * for TDLS, rate control should be initialized only when supported
1359 * rates are known.
1360 */
1361 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1362 rate_control_rate_init(sta);
1363
1364 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1365 sdata->vif.type == NL80211_IFTYPE_AP;
1366
1367 err = sta_info_insert_rcu(sta);
1368 if (err) {
1369 rcu_read_unlock();
1370 return err;
1371 }
1372
1373 if (layer2_update)
1374 ieee80211_send_layer2_update(sta);
1375
1376 rcu_read_unlock();
1377
1378 return 0;
1379 }
1380
1381 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1382 u8 *mac)
1383 {
1384 struct ieee80211_sub_if_data *sdata;
1385
1386 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1387
1388 if (mac)
1389 return sta_info_destroy_addr_bss(sdata, mac);
1390
1391 sta_info_flush(sdata);
1392 return 0;
1393 }
1394
1395 static int ieee80211_change_station(struct wiphy *wiphy,
1396 struct net_device *dev,
1397 u8 *mac,
1398 struct station_parameters *params)
1399 {
1400 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1401 struct ieee80211_local *local = wiphy_priv(wiphy);
1402 struct sta_info *sta;
1403 struct ieee80211_sub_if_data *vlansdata;
1404 int err;
1405
1406 mutex_lock(&local->sta_mtx);
1407
1408 sta = sta_info_get_bss(sdata, mac);
1409 if (!sta) {
1410 mutex_unlock(&local->sta_mtx);
1411 return -ENOENT;
1412 }
1413
1414 /* in station mode, supported rates are only valid with TDLS */
1415 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1416 params->supported_rates &&
1417 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1418 mutex_unlock(&local->sta_mtx);
1419 return -EINVAL;
1420 }
1421
1422 if (params->vlan && params->vlan != sta->sdata->dev) {
1423 bool prev_4addr = false;
1424 bool new_4addr = false;
1425
1426 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1427
1428 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1429 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1430 mutex_unlock(&local->sta_mtx);
1431 return -EINVAL;
1432 }
1433
1434 if (params->vlan->ieee80211_ptr->use_4addr) {
1435 if (vlansdata->u.vlan.sta) {
1436 mutex_unlock(&local->sta_mtx);
1437 return -EBUSY;
1438 }
1439
1440 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1441 new_4addr = true;
1442 }
1443
1444 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1445 sta->sdata->u.vlan.sta) {
1446 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1447 prev_4addr = true;
1448 }
1449
1450 sta->sdata = vlansdata;
1451
1452 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1453 prev_4addr != new_4addr) {
1454 if (new_4addr)
1455 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1456 else
1457 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1458 }
1459
1460 ieee80211_send_layer2_update(sta);
1461 }
1462
1463 err = sta_apply_parameters(local, sta, params);
1464 if (err) {
1465 mutex_unlock(&local->sta_mtx);
1466 return err;
1467 }
1468
1469 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1470 rate_control_rate_init(sta);
1471
1472 mutex_unlock(&local->sta_mtx);
1473
1474 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1475 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1476 ieee80211_recalc_ps(local, -1);
1477 ieee80211_recalc_ps_vif(sdata);
1478 }
1479 return 0;
1480 }
1481
1482 #ifdef CONFIG_MAC80211_MESH
1483 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1484 u8 *dst, u8 *next_hop)
1485 {
1486 struct ieee80211_sub_if_data *sdata;
1487 struct mesh_path *mpath;
1488 struct sta_info *sta;
1489 int err;
1490
1491 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1492
1493 rcu_read_lock();
1494 sta = sta_info_get(sdata, next_hop);
1495 if (!sta) {
1496 rcu_read_unlock();
1497 return -ENOENT;
1498 }
1499
1500 err = mesh_path_add(dst, sdata);
1501 if (err) {
1502 rcu_read_unlock();
1503 return err;
1504 }
1505
1506 mpath = mesh_path_lookup(dst, sdata);
1507 if (!mpath) {
1508 rcu_read_unlock();
1509 return -ENXIO;
1510 }
1511 mesh_path_fix_nexthop(mpath, sta);
1512
1513 rcu_read_unlock();
1514 return 0;
1515 }
1516
1517 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1518 u8 *dst)
1519 {
1520 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1521
1522 if (dst)
1523 return mesh_path_del(dst, sdata);
1524
1525 mesh_path_flush_by_iface(sdata);
1526 return 0;
1527 }
1528
1529 static int ieee80211_change_mpath(struct wiphy *wiphy,
1530 struct net_device *dev,
1531 u8 *dst, u8 *next_hop)
1532 {
1533 struct ieee80211_sub_if_data *sdata;
1534 struct mesh_path *mpath;
1535 struct sta_info *sta;
1536
1537 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538
1539 rcu_read_lock();
1540
1541 sta = sta_info_get(sdata, next_hop);
1542 if (!sta) {
1543 rcu_read_unlock();
1544 return -ENOENT;
1545 }
1546
1547 mpath = mesh_path_lookup(dst, sdata);
1548 if (!mpath) {
1549 rcu_read_unlock();
1550 return -ENOENT;
1551 }
1552
1553 mesh_path_fix_nexthop(mpath, sta);
1554
1555 rcu_read_unlock();
1556 return 0;
1557 }
1558
1559 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1560 struct mpath_info *pinfo)
1561 {
1562 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1563
1564 if (next_hop_sta)
1565 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1566 else
1567 memset(next_hop, 0, ETH_ALEN);
1568
1569 memset(pinfo, 0, sizeof(*pinfo));
1570
1571 pinfo->generation = mesh_paths_generation;
1572
1573 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1574 MPATH_INFO_SN |
1575 MPATH_INFO_METRIC |
1576 MPATH_INFO_EXPTIME |
1577 MPATH_INFO_DISCOVERY_TIMEOUT |
1578 MPATH_INFO_DISCOVERY_RETRIES |
1579 MPATH_INFO_FLAGS;
1580
1581 pinfo->frame_qlen = mpath->frame_queue.qlen;
1582 pinfo->sn = mpath->sn;
1583 pinfo->metric = mpath->metric;
1584 if (time_before(jiffies, mpath->exp_time))
1585 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1586 pinfo->discovery_timeout =
1587 jiffies_to_msecs(mpath->discovery_timeout);
1588 pinfo->discovery_retries = mpath->discovery_retries;
1589 if (mpath->flags & MESH_PATH_ACTIVE)
1590 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1591 if (mpath->flags & MESH_PATH_RESOLVING)
1592 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1593 if (mpath->flags & MESH_PATH_SN_VALID)
1594 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1595 if (mpath->flags & MESH_PATH_FIXED)
1596 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1597 if (mpath->flags & MESH_PATH_RESOLVED)
1598 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1599 }
1600
1601 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1602 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1603
1604 {
1605 struct ieee80211_sub_if_data *sdata;
1606 struct mesh_path *mpath;
1607
1608 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610 rcu_read_lock();
1611 mpath = mesh_path_lookup(dst, sdata);
1612 if (!mpath) {
1613 rcu_read_unlock();
1614 return -ENOENT;
1615 }
1616 memcpy(dst, mpath->dst, ETH_ALEN);
1617 mpath_set_pinfo(mpath, next_hop, pinfo);
1618 rcu_read_unlock();
1619 return 0;
1620 }
1621
1622 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1623 int idx, u8 *dst, u8 *next_hop,
1624 struct mpath_info *pinfo)
1625 {
1626 struct ieee80211_sub_if_data *sdata;
1627 struct mesh_path *mpath;
1628
1629 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1630
1631 rcu_read_lock();
1632 mpath = mesh_path_lookup_by_idx(idx, sdata);
1633 if (!mpath) {
1634 rcu_read_unlock();
1635 return -ENOENT;
1636 }
1637 memcpy(dst, mpath->dst, ETH_ALEN);
1638 mpath_set_pinfo(mpath, next_hop, pinfo);
1639 rcu_read_unlock();
1640 return 0;
1641 }
1642
1643 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1644 struct net_device *dev,
1645 struct mesh_config *conf)
1646 {
1647 struct ieee80211_sub_if_data *sdata;
1648 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1649
1650 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1651 return 0;
1652 }
1653
1654 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1655 {
1656 return (mask >> (parm-1)) & 0x1;
1657 }
1658
1659 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1660 const struct mesh_setup *setup)
1661 {
1662 u8 *new_ie;
1663 const u8 *old_ie;
1664 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1665 struct ieee80211_sub_if_data, u.mesh);
1666
1667 /* allocate information elements */
1668 new_ie = NULL;
1669 old_ie = ifmsh->ie;
1670
1671 if (setup->ie_len) {
1672 new_ie = kmemdup(setup->ie, setup->ie_len,
1673 GFP_KERNEL);
1674 if (!new_ie)
1675 return -ENOMEM;
1676 }
1677 ifmsh->ie_len = setup->ie_len;
1678 ifmsh->ie = new_ie;
1679 kfree(old_ie);
1680
1681 /* now copy the rest of the setup parameters */
1682 ifmsh->mesh_id_len = setup->mesh_id_len;
1683 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1684 ifmsh->mesh_sp_id = setup->sync_method;
1685 ifmsh->mesh_pp_id = setup->path_sel_proto;
1686 ifmsh->mesh_pm_id = setup->path_metric;
1687 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1688 if (setup->is_authenticated)
1689 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1690 if (setup->is_secure)
1691 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1692
1693 /* mcast rate setting in Mesh Node */
1694 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1695 sizeof(setup->mcast_rate));
1696
1697 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1698 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1699
1700 return 0;
1701 }
1702
1703 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1704 struct net_device *dev, u32 mask,
1705 const struct mesh_config *nconf)
1706 {
1707 struct mesh_config *conf;
1708 struct ieee80211_sub_if_data *sdata;
1709 struct ieee80211_if_mesh *ifmsh;
1710
1711 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1712 ifmsh = &sdata->u.mesh;
1713
1714 /* Set the config options which we are interested in setting */
1715 conf = &(sdata->u.mesh.mshcfg);
1716 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1717 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1718 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1719 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1720 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1721 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1722 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1723 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1724 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1725 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1726 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1727 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1728 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1729 conf->element_ttl = nconf->element_ttl;
1730 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1731 conf->auto_open_plinks = nconf->auto_open_plinks;
1732 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1733 conf->dot11MeshNbrOffsetMaxNeighbor =
1734 nconf->dot11MeshNbrOffsetMaxNeighbor;
1735 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1736 conf->dot11MeshHWMPmaxPREQretries =
1737 nconf->dot11MeshHWMPmaxPREQretries;
1738 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1739 conf->path_refresh_time = nconf->path_refresh_time;
1740 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1741 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1742 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1743 conf->dot11MeshHWMPactivePathTimeout =
1744 nconf->dot11MeshHWMPactivePathTimeout;
1745 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1746 conf->dot11MeshHWMPpreqMinInterval =
1747 nconf->dot11MeshHWMPpreqMinInterval;
1748 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1749 conf->dot11MeshHWMPperrMinInterval =
1750 nconf->dot11MeshHWMPperrMinInterval;
1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1752 mask))
1753 conf->dot11MeshHWMPnetDiameterTraversalTime =
1754 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1755 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1756 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1757 ieee80211_mesh_root_setup(ifmsh);
1758 }
1759 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1760 /* our current gate announcement implementation rides on root
1761 * announcements, so require this ifmsh to also be a root node
1762 * */
1763 if (nconf->dot11MeshGateAnnouncementProtocol &&
1764 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1765 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1766 ieee80211_mesh_root_setup(ifmsh);
1767 }
1768 conf->dot11MeshGateAnnouncementProtocol =
1769 nconf->dot11MeshGateAnnouncementProtocol;
1770 }
1771 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1772 conf->dot11MeshHWMPRannInterval =
1773 nconf->dot11MeshHWMPRannInterval;
1774 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1775 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1776 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1777 /* our RSSI threshold implementation is supported only for
1778 * devices that report signal in dBm.
1779 */
1780 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1781 return -ENOTSUPP;
1782 conf->rssi_threshold = nconf->rssi_threshold;
1783 }
1784 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1785 conf->ht_opmode = nconf->ht_opmode;
1786 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1787 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1788 }
1789 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1790 conf->dot11MeshHWMPactivePathToRootTimeout =
1791 nconf->dot11MeshHWMPactivePathToRootTimeout;
1792 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1793 conf->dot11MeshHWMProotInterval =
1794 nconf->dot11MeshHWMProotInterval;
1795 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1796 conf->dot11MeshHWMPconfirmationInterval =
1797 nconf->dot11MeshHWMPconfirmationInterval;
1798 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1799 conf->power_mode = nconf->power_mode;
1800 ieee80211_mps_local_status_update(sdata);
1801 }
1802 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) {
1803 conf->dot11MeshAwakeWindowDuration =
1804 nconf->dot11MeshAwakeWindowDuration;
1805 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1806 }
1807 return 0;
1808 }
1809
1810 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1811 const struct mesh_config *conf,
1812 const struct mesh_setup *setup)
1813 {
1814 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1815 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1816 int err;
1817
1818 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1819 err = copy_mesh_setup(ifmsh, setup);
1820 if (err)
1821 return err;
1822
1823 /* can mesh use other SMPS modes? */
1824 sdata->smps_mode = IEEE80211_SMPS_OFF;
1825 sdata->needed_rx_chains = sdata->local->rx_chains;
1826
1827 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1828 IEEE80211_CHANCTX_SHARED);
1829 if (err)
1830 return err;
1831
1832 ieee80211_start_mesh(sdata);
1833
1834 return 0;
1835 }
1836
1837 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1838 {
1839 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840
1841 ieee80211_stop_mesh(sdata);
1842 ieee80211_vif_release_channel(sdata);
1843
1844 return 0;
1845 }
1846 #endif
1847
1848 static int ieee80211_change_bss(struct wiphy *wiphy,
1849 struct net_device *dev,
1850 struct bss_parameters *params)
1851 {
1852 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1853 enum ieee80211_band band;
1854 u32 changed = 0;
1855
1856 if (!rtnl_dereference(sdata->u.ap.beacon))
1857 return -ENOENT;
1858
1859 band = ieee80211_get_sdata_band(sdata);
1860
1861 if (params->use_cts_prot >= 0) {
1862 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1863 changed |= BSS_CHANGED_ERP_CTS_PROT;
1864 }
1865 if (params->use_short_preamble >= 0) {
1866 sdata->vif.bss_conf.use_short_preamble =
1867 params->use_short_preamble;
1868 changed |= BSS_CHANGED_ERP_PREAMBLE;
1869 }
1870
1871 if (!sdata->vif.bss_conf.use_short_slot &&
1872 band == IEEE80211_BAND_5GHZ) {
1873 sdata->vif.bss_conf.use_short_slot = true;
1874 changed |= BSS_CHANGED_ERP_SLOT;
1875 }
1876
1877 if (params->use_short_slot_time >= 0) {
1878 sdata->vif.bss_conf.use_short_slot =
1879 params->use_short_slot_time;
1880 changed |= BSS_CHANGED_ERP_SLOT;
1881 }
1882
1883 if (params->basic_rates) {
1884 int i, j;
1885 u32 rates = 0;
1886 struct ieee80211_supported_band *sband = wiphy->bands[band];
1887
1888 for (i = 0; i < params->basic_rates_len; i++) {
1889 int rate = (params->basic_rates[i] & 0x7f) * 5;
1890 for (j = 0; j < sband->n_bitrates; j++) {
1891 if (sband->bitrates[j].bitrate == rate)
1892 rates |= BIT(j);
1893 }
1894 }
1895 sdata->vif.bss_conf.basic_rates = rates;
1896 changed |= BSS_CHANGED_BASIC_RATES;
1897 }
1898
1899 if (params->ap_isolate >= 0) {
1900 if (params->ap_isolate)
1901 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1902 else
1903 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1904 }
1905
1906 if (params->ht_opmode >= 0) {
1907 sdata->vif.bss_conf.ht_operation_mode =
1908 (u16) params->ht_opmode;
1909 changed |= BSS_CHANGED_HT;
1910 }
1911
1912 if (params->p2p_ctwindow >= 0) {
1913 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1914 changed |= BSS_CHANGED_P2P_PS;
1915 }
1916
1917 if (params->p2p_opp_ps >= 0) {
1918 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1919 changed |= BSS_CHANGED_P2P_PS;
1920 }
1921
1922 ieee80211_bss_info_change_notify(sdata, changed);
1923
1924 return 0;
1925 }
1926
1927 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928 struct net_device *dev,
1929 struct ieee80211_txq_params *params)
1930 {
1931 struct ieee80211_local *local = wiphy_priv(wiphy);
1932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933 struct ieee80211_tx_queue_params p;
1934
1935 if (!local->ops->conf_tx)
1936 return -EOPNOTSUPP;
1937
1938 if (local->hw.queues < IEEE80211_NUM_ACS)
1939 return -EOPNOTSUPP;
1940
1941 memset(&p, 0, sizeof(p));
1942 p.aifs = params->aifs;
1943 p.cw_max = params->cwmax;
1944 p.cw_min = params->cwmin;
1945 p.txop = params->txop;
1946
1947 /*
1948 * Setting tx queue params disables u-apsd because it's only
1949 * called in master mode.
1950 */
1951 p.uapsd = false;
1952
1953 sdata->tx_conf[params->ac] = p;
1954 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1955 wiphy_debug(local->hw.wiphy,
1956 "failed to set TX queue parameters for AC %d\n",
1957 params->ac);
1958 return -EINVAL;
1959 }
1960
1961 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1962
1963 return 0;
1964 }
1965
1966 #ifdef CONFIG_PM
1967 static int ieee80211_suspend(struct wiphy *wiphy,
1968 struct cfg80211_wowlan *wowlan)
1969 {
1970 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 }
1972
1973 static int ieee80211_resume(struct wiphy *wiphy)
1974 {
1975 return __ieee80211_resume(wiphy_priv(wiphy));
1976 }
1977 #else
1978 #define ieee80211_suspend NULL
1979 #define ieee80211_resume NULL
1980 #endif
1981
1982 static int ieee80211_scan(struct wiphy *wiphy,
1983 struct cfg80211_scan_request *req)
1984 {
1985 struct ieee80211_sub_if_data *sdata;
1986
1987 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988
1989 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1990 case NL80211_IFTYPE_STATION:
1991 case NL80211_IFTYPE_ADHOC:
1992 case NL80211_IFTYPE_MESH_POINT:
1993 case NL80211_IFTYPE_P2P_CLIENT:
1994 case NL80211_IFTYPE_P2P_DEVICE:
1995 break;
1996 case NL80211_IFTYPE_P2P_GO:
1997 if (sdata->local->ops->hw_scan)
1998 break;
1999 /*
2000 * FIXME: implement NoA while scanning in software,
2001 * for now fall through to allow scanning only when
2002 * beaconing hasn't been configured yet
2003 */
2004 case NL80211_IFTYPE_AP:
2005 /*
2006 * If the scan has been forced (and the driver supports
2007 * forcing), don't care about being beaconing already.
2008 * This will create problems to the attached stations (e.g. all
2009 * the frames sent while scanning on other channel will be
2010 * lost)
2011 */
2012 if (sdata->u.ap.beacon &&
2013 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2014 !(req->flags & NL80211_SCAN_FLAG_AP)))
2015 return -EOPNOTSUPP;
2016 break;
2017 default:
2018 return -EOPNOTSUPP;
2019 }
2020
2021 return ieee80211_request_scan(sdata, req);
2022 }
2023
2024 static int
2025 ieee80211_sched_scan_start(struct wiphy *wiphy,
2026 struct net_device *dev,
2027 struct cfg80211_sched_scan_request *req)
2028 {
2029 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2030
2031 if (!sdata->local->ops->sched_scan_start)
2032 return -EOPNOTSUPP;
2033
2034 return ieee80211_request_sched_scan_start(sdata, req);
2035 }
2036
2037 static int
2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2039 {
2040 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2041
2042 if (!sdata->local->ops->sched_scan_stop)
2043 return -EOPNOTSUPP;
2044
2045 return ieee80211_request_sched_scan_stop(sdata);
2046 }
2047
2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2049 struct cfg80211_auth_request *req)
2050 {
2051 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2052 }
2053
2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2055 struct cfg80211_assoc_request *req)
2056 {
2057 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 }
2059
2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2061 struct cfg80211_deauth_request *req)
2062 {
2063 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2067 struct cfg80211_disassoc_request *req)
2068 {
2069 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2073 struct cfg80211_ibss_params *params)
2074 {
2075 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2076 }
2077
2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2079 {
2080 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 }
2082
2083 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2084 int rate[IEEE80211_NUM_BANDS])
2085 {
2086 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2087
2088 memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(rate));
2089
2090 return 0;
2091 }
2092
2093 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2094 {
2095 struct ieee80211_local *local = wiphy_priv(wiphy);
2096 int err;
2097
2098 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2099 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2100
2101 if (err)
2102 return err;
2103 }
2104
2105 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2106 err = drv_set_coverage_class(local, wiphy->coverage_class);
2107
2108 if (err)
2109 return err;
2110 }
2111
2112 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2113 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2114
2115 if (err)
2116 return err;
2117 }
2118
2119 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2120 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2121 return -EINVAL;
2122 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2123 }
2124 if (changed & WIPHY_PARAM_RETRY_LONG) {
2125 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2126 return -EINVAL;
2127 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2128 }
2129 if (changed &
2130 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2131 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2132
2133 return 0;
2134 }
2135
2136 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2137 struct wireless_dev *wdev,
2138 enum nl80211_tx_power_setting type, int mbm)
2139 {
2140 struct ieee80211_local *local = wiphy_priv(wiphy);
2141 struct ieee80211_sub_if_data *sdata;
2142
2143 if (wdev) {
2144 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2145
2146 switch (type) {
2147 case NL80211_TX_POWER_AUTOMATIC:
2148 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2149 break;
2150 case NL80211_TX_POWER_LIMITED:
2151 case NL80211_TX_POWER_FIXED:
2152 if (mbm < 0 || (mbm % 100))
2153 return -EOPNOTSUPP;
2154 sdata->user_power_level = MBM_TO_DBM(mbm);
2155 break;
2156 }
2157
2158 ieee80211_recalc_txpower(sdata);
2159
2160 return 0;
2161 }
2162
2163 switch (type) {
2164 case NL80211_TX_POWER_AUTOMATIC:
2165 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2166 break;
2167 case NL80211_TX_POWER_LIMITED:
2168 case NL80211_TX_POWER_FIXED:
2169 if (mbm < 0 || (mbm % 100))
2170 return -EOPNOTSUPP;
2171 local->user_power_level = MBM_TO_DBM(mbm);
2172 break;
2173 }
2174
2175 mutex_lock(&local->iflist_mtx);
2176 list_for_each_entry(sdata, &local->interfaces, list)
2177 sdata->user_power_level = local->user_power_level;
2178 list_for_each_entry(sdata, &local->interfaces, list)
2179 ieee80211_recalc_txpower(sdata);
2180 mutex_unlock(&local->iflist_mtx);
2181
2182 return 0;
2183 }
2184
2185 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2186 struct wireless_dev *wdev,
2187 int *dbm)
2188 {
2189 struct ieee80211_local *local = wiphy_priv(wiphy);
2190 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2191
2192 if (!local->use_chanctx)
2193 *dbm = local->hw.conf.power_level;
2194 else
2195 *dbm = sdata->vif.bss_conf.txpower;
2196
2197 return 0;
2198 }
2199
2200 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2201 const u8 *addr)
2202 {
2203 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2204
2205 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2206
2207 return 0;
2208 }
2209
2210 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2211 {
2212 struct ieee80211_local *local = wiphy_priv(wiphy);
2213
2214 drv_rfkill_poll(local);
2215 }
2216
2217 #ifdef CONFIG_NL80211_TESTMODE
2218 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2219 {
2220 struct ieee80211_local *local = wiphy_priv(wiphy);
2221
2222 if (!local->ops->testmode_cmd)
2223 return -EOPNOTSUPP;
2224
2225 return local->ops->testmode_cmd(&local->hw, data, len);
2226 }
2227
2228 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2229 struct sk_buff *skb,
2230 struct netlink_callback *cb,
2231 void *data, int len)
2232 {
2233 struct ieee80211_local *local = wiphy_priv(wiphy);
2234
2235 if (!local->ops->testmode_dump)
2236 return -EOPNOTSUPP;
2237
2238 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2239 }
2240 #endif
2241
2242 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2243 enum ieee80211_smps_mode smps_mode)
2244 {
2245 const u8 *ap;
2246 enum ieee80211_smps_mode old_req;
2247 int err;
2248
2249 lockdep_assert_held(&sdata->u.mgd.mtx);
2250
2251 old_req = sdata->u.mgd.req_smps;
2252 sdata->u.mgd.req_smps = smps_mode;
2253
2254 if (old_req == smps_mode &&
2255 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2256 return 0;
2257
2258 /*
2259 * If not associated, or current association is not an HT
2260 * association, there's no need to do anything, just store
2261 * the new value until we associate.
2262 */
2263 if (!sdata->u.mgd.associated ||
2264 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2265 return 0;
2266
2267 ap = sdata->u.mgd.associated->bssid;
2268
2269 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2270 if (sdata->u.mgd.powersave)
2271 smps_mode = IEEE80211_SMPS_DYNAMIC;
2272 else
2273 smps_mode = IEEE80211_SMPS_OFF;
2274 }
2275
2276 /* send SM PS frame to AP */
2277 err = ieee80211_send_smps_action(sdata, smps_mode,
2278 ap, ap);
2279 if (err)
2280 sdata->u.mgd.req_smps = old_req;
2281
2282 return err;
2283 }
2284
2285 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2286 bool enabled, int timeout)
2287 {
2288 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2289 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2290
2291 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2292 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2293 return -EOPNOTSUPP;
2294
2295 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2296 return -EOPNOTSUPP;
2297
2298 if (enabled == sdata->u.mgd.powersave &&
2299 timeout == local->dynamic_ps_forced_timeout)
2300 return 0;
2301
2302 sdata->u.mgd.powersave = enabled;
2303 local->dynamic_ps_forced_timeout = timeout;
2304
2305 /* no change, but if automatic follow powersave */
2306 mutex_lock(&sdata->u.mgd.mtx);
2307 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2308 mutex_unlock(&sdata->u.mgd.mtx);
2309
2310 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2311 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2312
2313 ieee80211_recalc_ps(local, -1);
2314 ieee80211_recalc_ps_vif(sdata);
2315
2316 return 0;
2317 }
2318
2319 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2320 struct net_device *dev,
2321 s32 rssi_thold, u32 rssi_hyst)
2322 {
2323 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2324 struct ieee80211_vif *vif = &sdata->vif;
2325 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2326
2327 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2328 rssi_hyst == bss_conf->cqm_rssi_hyst)
2329 return 0;
2330
2331 bss_conf->cqm_rssi_thold = rssi_thold;
2332 bss_conf->cqm_rssi_hyst = rssi_hyst;
2333
2334 /* tell the driver upon association, unless already associated */
2335 if (sdata->u.mgd.associated &&
2336 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2337 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2338
2339 return 0;
2340 }
2341
2342 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2343 struct net_device *dev,
2344 const u8 *addr,
2345 const struct cfg80211_bitrate_mask *mask)
2346 {
2347 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2348 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2349 int i, ret;
2350
2351 if (!ieee80211_sdata_running(sdata))
2352 return -ENETDOWN;
2353
2354 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2355 ret = drv_set_bitrate_mask(local, sdata, mask);
2356 if (ret)
2357 return ret;
2358 }
2359
2360 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2361 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2362 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2363 sizeof(mask->control[i].mcs));
2364 }
2365
2366 return 0;
2367 }
2368
2369 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2370 struct ieee80211_sub_if_data *sdata,
2371 struct ieee80211_channel *channel,
2372 unsigned int duration, u64 *cookie,
2373 struct sk_buff *txskb)
2374 {
2375 struct ieee80211_roc_work *roc, *tmp;
2376 bool queued = false;
2377 int ret;
2378
2379 lockdep_assert_held(&local->mtx);
2380
2381 if (local->use_chanctx && !local->ops->remain_on_channel)
2382 return -EOPNOTSUPP;
2383
2384 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2385 if (!roc)
2386 return -ENOMEM;
2387
2388 roc->chan = channel;
2389 roc->duration = duration;
2390 roc->req_duration = duration;
2391 roc->frame = txskb;
2392 roc->mgmt_tx_cookie = (unsigned long)txskb;
2393 roc->sdata = sdata;
2394 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2395 INIT_LIST_HEAD(&roc->dependents);
2396
2397 /* if there's one pending or we're scanning, queue this one */
2398 if (!list_empty(&local->roc_list) || local->scanning)
2399 goto out_check_combine;
2400
2401 /* if not HW assist, just queue & schedule work */
2402 if (!local->ops->remain_on_channel) {
2403 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2404 goto out_queue;
2405 }
2406
2407 /* otherwise actually kick it off here (for error handling) */
2408
2409 /*
2410 * If the duration is zero, then the driver
2411 * wouldn't actually do anything. Set it to
2412 * 10 for now.
2413 *
2414 * TODO: cancel the off-channel operation
2415 * when we get the SKB's TX status and
2416 * the wait time was zero before.
2417 */
2418 if (!duration)
2419 duration = 10;
2420
2421 ret = drv_remain_on_channel(local, sdata, channel, duration);
2422 if (ret) {
2423 kfree(roc);
2424 return ret;
2425 }
2426
2427 roc->started = true;
2428 goto out_queue;
2429
2430 out_check_combine:
2431 list_for_each_entry(tmp, &local->roc_list, list) {
2432 if (tmp->chan != channel || tmp->sdata != sdata)
2433 continue;
2434
2435 /*
2436 * Extend this ROC if possible:
2437 *
2438 * If it hasn't started yet, just increase the duration
2439 * and add the new one to the list of dependents.
2440 */
2441 if (!tmp->started) {
2442 list_add_tail(&roc->list, &tmp->dependents);
2443 tmp->duration = max(tmp->duration, roc->duration);
2444 queued = true;
2445 break;
2446 }
2447
2448 /* If it has already started, it's more difficult ... */
2449 if (local->ops->remain_on_channel) {
2450 unsigned long j = jiffies;
2451
2452 /*
2453 * In the offloaded ROC case, if it hasn't begun, add
2454 * this new one to the dependent list to be handled
2455 * when the the master one begins. If it has begun,
2456 * check that there's still a minimum time left and
2457 * if so, start this one, transmitting the frame, but
2458 * add it to the list directly after this one with a
2459 * a reduced time so we'll ask the driver to execute
2460 * it right after finishing the previous one, in the
2461 * hope that it'll also be executed right afterwards,
2462 * effectively extending the old one.
2463 * If there's no minimum time left, just add it to the
2464 * normal list.
2465 */
2466 if (!tmp->hw_begun) {
2467 list_add_tail(&roc->list, &tmp->dependents);
2468 queued = true;
2469 break;
2470 }
2471
2472 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2473 tmp->hw_start_time +
2474 msecs_to_jiffies(tmp->duration))) {
2475 int new_dur;
2476
2477 ieee80211_handle_roc_started(roc);
2478
2479 new_dur = roc->duration -
2480 jiffies_to_msecs(tmp->hw_start_time +
2481 msecs_to_jiffies(
2482 tmp->duration) -
2483 j);
2484
2485 if (new_dur > 0) {
2486 /* add right after tmp */
2487 list_add(&roc->list, &tmp->list);
2488 } else {
2489 list_add_tail(&roc->list,
2490 &tmp->dependents);
2491 }
2492 queued = true;
2493 }
2494 } else if (del_timer_sync(&tmp->work.timer)) {
2495 unsigned long new_end;
2496
2497 /*
2498 * In the software ROC case, cancel the timer, if
2499 * that fails then the finish work is already
2500 * queued/pending and thus we queue the new ROC
2501 * normally, if that succeeds then we can extend
2502 * the timer duration and TX the frame (if any.)
2503 */
2504
2505 list_add_tail(&roc->list, &tmp->dependents);
2506 queued = true;
2507
2508 new_end = jiffies + msecs_to_jiffies(roc->duration);
2509
2510 /* ok, it was started & we canceled timer */
2511 if (time_after(new_end, tmp->work.timer.expires))
2512 mod_timer(&tmp->work.timer, new_end);
2513 else
2514 add_timer(&tmp->work.timer);
2515
2516 ieee80211_handle_roc_started(roc);
2517 }
2518 break;
2519 }
2520
2521 out_queue:
2522 if (!queued)
2523 list_add_tail(&roc->list, &local->roc_list);
2524
2525 /*
2526 * cookie is either the roc cookie (for normal roc)
2527 * or the SKB (for mgmt TX)
2528 */
2529 if (!txskb) {
2530 /* local->mtx protects this */
2531 local->roc_cookie_counter++;
2532 roc->cookie = local->roc_cookie_counter;
2533 /* wow, you wrapped 64 bits ... more likely a bug */
2534 if (WARN_ON(roc->cookie == 0)) {
2535 roc->cookie = 1;
2536 local->roc_cookie_counter++;
2537 }
2538 *cookie = roc->cookie;
2539 } else {
2540 *cookie = (unsigned long)txskb;
2541 }
2542
2543 return 0;
2544 }
2545
2546 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2547 struct wireless_dev *wdev,
2548 struct ieee80211_channel *chan,
2549 unsigned int duration,
2550 u64 *cookie)
2551 {
2552 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2553 struct ieee80211_local *local = sdata->local;
2554 int ret;
2555
2556 mutex_lock(&local->mtx);
2557 ret = ieee80211_start_roc_work(local, sdata, chan,
2558 duration, cookie, NULL);
2559 mutex_unlock(&local->mtx);
2560
2561 return ret;
2562 }
2563
2564 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2565 u64 cookie, bool mgmt_tx)
2566 {
2567 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2568 int ret;
2569
2570 mutex_lock(&local->mtx);
2571 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2572 struct ieee80211_roc_work *dep, *tmp2;
2573
2574 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2575 if (!mgmt_tx && dep->cookie != cookie)
2576 continue;
2577 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2578 continue;
2579 /* found dependent item -- just remove it */
2580 list_del(&dep->list);
2581 mutex_unlock(&local->mtx);
2582
2583 ieee80211_roc_notify_destroy(dep);
2584 return 0;
2585 }
2586
2587 if (!mgmt_tx && roc->cookie != cookie)
2588 continue;
2589 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2590 continue;
2591
2592 found = roc;
2593 break;
2594 }
2595
2596 if (!found) {
2597 mutex_unlock(&local->mtx);
2598 return -ENOENT;
2599 }
2600
2601 /*
2602 * We found the item to cancel, so do that. Note that it
2603 * may have dependents, which we also cancel (and send
2604 * the expired signal for.) Not doing so would be quite
2605 * tricky here, but we may need to fix it later.
2606 */
2607
2608 if (local->ops->remain_on_channel) {
2609 if (found->started) {
2610 ret = drv_cancel_remain_on_channel(local);
2611 if (WARN_ON_ONCE(ret)) {
2612 mutex_unlock(&local->mtx);
2613 return ret;
2614 }
2615 }
2616
2617 list_del(&found->list);
2618
2619 if (found->started)
2620 ieee80211_start_next_roc(local);
2621 mutex_unlock(&local->mtx);
2622
2623 ieee80211_roc_notify_destroy(found);
2624 } else {
2625 /* work may be pending so use it all the time */
2626 found->abort = true;
2627 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2628
2629 mutex_unlock(&local->mtx);
2630
2631 /* work will clean up etc */
2632 flush_delayed_work(&found->work);
2633 }
2634
2635 return 0;
2636 }
2637
2638 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2639 struct wireless_dev *wdev,
2640 u64 cookie)
2641 {
2642 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2643 struct ieee80211_local *local = sdata->local;
2644
2645 return ieee80211_cancel_roc(local, cookie, false);
2646 }
2647
2648 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2649 struct ieee80211_channel *chan, bool offchan,
2650 unsigned int wait, const u8 *buf, size_t len,
2651 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2652 {
2653 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2654 struct ieee80211_local *local = sdata->local;
2655 struct sk_buff *skb;
2656 struct sta_info *sta;
2657 const struct ieee80211_mgmt *mgmt = (void *)buf;
2658 bool need_offchan = false;
2659 u32 flags;
2660 int ret;
2661
2662 if (dont_wait_for_ack)
2663 flags = IEEE80211_TX_CTL_NO_ACK;
2664 else
2665 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2666 IEEE80211_TX_CTL_REQ_TX_STATUS;
2667
2668 if (no_cck)
2669 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2670
2671 switch (sdata->vif.type) {
2672 case NL80211_IFTYPE_ADHOC:
2673 if (!sdata->vif.bss_conf.ibss_joined)
2674 need_offchan = true;
2675 /* fall through */
2676 #ifdef CONFIG_MAC80211_MESH
2677 case NL80211_IFTYPE_MESH_POINT:
2678 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2679 !sdata->u.mesh.mesh_id_len)
2680 need_offchan = true;
2681 /* fall through */
2682 #endif
2683 case NL80211_IFTYPE_AP:
2684 case NL80211_IFTYPE_AP_VLAN:
2685 case NL80211_IFTYPE_P2P_GO:
2686 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2687 !ieee80211_vif_is_mesh(&sdata->vif) &&
2688 !rcu_access_pointer(sdata->bss->beacon))
2689 need_offchan = true;
2690 if (!ieee80211_is_action(mgmt->frame_control) ||
2691 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2692 break;
2693 rcu_read_lock();
2694 sta = sta_info_get(sdata, mgmt->da);
2695 rcu_read_unlock();
2696 if (!sta)
2697 return -ENOLINK;
2698 break;
2699 case NL80211_IFTYPE_STATION:
2700 case NL80211_IFTYPE_P2P_CLIENT:
2701 if (!sdata->u.mgd.associated)
2702 need_offchan = true;
2703 break;
2704 case NL80211_IFTYPE_P2P_DEVICE:
2705 need_offchan = true;
2706 break;
2707 default:
2708 return -EOPNOTSUPP;
2709 }
2710
2711 mutex_lock(&local->mtx);
2712
2713 /* Check if the operating channel is the requested channel */
2714 if (!need_offchan) {
2715 struct ieee80211_chanctx_conf *chanctx_conf;
2716
2717 rcu_read_lock();
2718 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2719
2720 if (chanctx_conf)
2721 need_offchan = chan != chanctx_conf->def.chan;
2722 else
2723 need_offchan = true;
2724 rcu_read_unlock();
2725 }
2726
2727 if (need_offchan && !offchan) {
2728 ret = -EBUSY;
2729 goto out_unlock;
2730 }
2731
2732 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2733 if (!skb) {
2734 ret = -ENOMEM;
2735 goto out_unlock;
2736 }
2737 skb_reserve(skb, local->hw.extra_tx_headroom);
2738
2739 memcpy(skb_put(skb, len), buf, len);
2740
2741 IEEE80211_SKB_CB(skb)->flags = flags;
2742
2743 skb->dev = sdata->dev;
2744
2745 if (!need_offchan) {
2746 *cookie = (unsigned long) skb;
2747 ieee80211_tx_skb(sdata, skb);
2748 ret = 0;
2749 goto out_unlock;
2750 }
2751
2752 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2753 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2754 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2755 IEEE80211_SKB_CB(skb)->hw_queue =
2756 local->hw.offchannel_tx_hw_queue;
2757
2758 /* This will handle all kinds of coalescing and immediate TX */
2759 ret = ieee80211_start_roc_work(local, sdata, chan,
2760 wait, cookie, skb);
2761 if (ret)
2762 kfree_skb(skb);
2763 out_unlock:
2764 mutex_unlock(&local->mtx);
2765 return ret;
2766 }
2767
2768 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2769 struct wireless_dev *wdev,
2770 u64 cookie)
2771 {
2772 struct ieee80211_local *local = wiphy_priv(wiphy);
2773
2774 return ieee80211_cancel_roc(local, cookie, true);
2775 }
2776
2777 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2778 struct wireless_dev *wdev,
2779 u16 frame_type, bool reg)
2780 {
2781 struct ieee80211_local *local = wiphy_priv(wiphy);
2782 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2783
2784 switch (frame_type) {
2785 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2786 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2787 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2788
2789 if (reg)
2790 ifibss->auth_frame_registrations++;
2791 else
2792 ifibss->auth_frame_registrations--;
2793 }
2794 break;
2795 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2796 if (reg)
2797 local->probe_req_reg++;
2798 else
2799 local->probe_req_reg--;
2800
2801 if (!local->open_count)
2802 break;
2803
2804 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2805 break;
2806 default:
2807 break;
2808 }
2809 }
2810
2811 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2812 {
2813 struct ieee80211_local *local = wiphy_priv(wiphy);
2814
2815 if (local->started)
2816 return -EOPNOTSUPP;
2817
2818 return drv_set_antenna(local, tx_ant, rx_ant);
2819 }
2820
2821 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2822 {
2823 struct ieee80211_local *local = wiphy_priv(wiphy);
2824
2825 return drv_get_antenna(local, tx_ant, rx_ant);
2826 }
2827
2828 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2829 {
2830 struct ieee80211_local *local = wiphy_priv(wiphy);
2831
2832 return drv_set_ringparam(local, tx, rx);
2833 }
2834
2835 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2836 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2837 {
2838 struct ieee80211_local *local = wiphy_priv(wiphy);
2839
2840 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2841 }
2842
2843 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2844 struct net_device *dev,
2845 struct cfg80211_gtk_rekey_data *data)
2846 {
2847 struct ieee80211_local *local = wiphy_priv(wiphy);
2848 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2849
2850 if (!local->ops->set_rekey_data)
2851 return -EOPNOTSUPP;
2852
2853 drv_set_rekey_data(local, sdata, data);
2854
2855 return 0;
2856 }
2857
2858 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2859 {
2860 u8 *pos = (void *)skb_put(skb, 7);
2861
2862 *pos++ = WLAN_EID_EXT_CAPABILITY;
2863 *pos++ = 5; /* len */
2864 *pos++ = 0x0;
2865 *pos++ = 0x0;
2866 *pos++ = 0x0;
2867 *pos++ = 0x0;
2868 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2869 }
2870
2871 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2872 {
2873 struct ieee80211_local *local = sdata->local;
2874 u16 capab;
2875
2876 capab = 0;
2877 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2878 return capab;
2879
2880 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2881 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2882 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2883 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2884
2885 return capab;
2886 }
2887
2888 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2889 u8 *peer, u8 *bssid)
2890 {
2891 struct ieee80211_tdls_lnkie *lnkid;
2892
2893 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2894
2895 lnkid->ie_type = WLAN_EID_LINK_ID;
2896 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2897
2898 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2899 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2900 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2901 }
2902
2903 static int
2904 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2905 u8 *peer, u8 action_code, u8 dialog_token,
2906 u16 status_code, struct sk_buff *skb)
2907 {
2908 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2909 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2910 struct ieee80211_tdls_data *tf;
2911
2912 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2913
2914 memcpy(tf->da, peer, ETH_ALEN);
2915 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2916 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2917 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2918
2919 switch (action_code) {
2920 case WLAN_TDLS_SETUP_REQUEST:
2921 tf->category = WLAN_CATEGORY_TDLS;
2922 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2923
2924 skb_put(skb, sizeof(tf->u.setup_req));
2925 tf->u.setup_req.dialog_token = dialog_token;
2926 tf->u.setup_req.capability =
2927 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2928
2929 ieee80211_add_srates_ie(sdata, skb, false, band);
2930 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2931 ieee80211_tdls_add_ext_capab(skb);
2932 break;
2933 case WLAN_TDLS_SETUP_RESPONSE:
2934 tf->category = WLAN_CATEGORY_TDLS;
2935 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2936
2937 skb_put(skb, sizeof(tf->u.setup_resp));
2938 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2939 tf->u.setup_resp.dialog_token = dialog_token;
2940 tf->u.setup_resp.capability =
2941 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2942
2943 ieee80211_add_srates_ie(sdata, skb, false, band);
2944 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2945 ieee80211_tdls_add_ext_capab(skb);
2946 break;
2947 case WLAN_TDLS_SETUP_CONFIRM:
2948 tf->category = WLAN_CATEGORY_TDLS;
2949 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2950
2951 skb_put(skb, sizeof(tf->u.setup_cfm));
2952 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2953 tf->u.setup_cfm.dialog_token = dialog_token;
2954 break;
2955 case WLAN_TDLS_TEARDOWN:
2956 tf->category = WLAN_CATEGORY_TDLS;
2957 tf->action_code = WLAN_TDLS_TEARDOWN;
2958
2959 skb_put(skb, sizeof(tf->u.teardown));
2960 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2961 break;
2962 case WLAN_TDLS_DISCOVERY_REQUEST:
2963 tf->category = WLAN_CATEGORY_TDLS;
2964 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2965
2966 skb_put(skb, sizeof(tf->u.discover_req));
2967 tf->u.discover_req.dialog_token = dialog_token;
2968 break;
2969 default:
2970 return -EINVAL;
2971 }
2972
2973 return 0;
2974 }
2975
2976 static int
2977 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2978 u8 *peer, u8 action_code, u8 dialog_token,
2979 u16 status_code, struct sk_buff *skb)
2980 {
2981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2982 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2983 struct ieee80211_mgmt *mgmt;
2984
2985 mgmt = (void *)skb_put(skb, 24);
2986 memset(mgmt, 0, 24);
2987 memcpy(mgmt->da, peer, ETH_ALEN);
2988 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2989 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2990
2991 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2992 IEEE80211_STYPE_ACTION);
2993
2994 switch (action_code) {
2995 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2996 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2997 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2998 mgmt->u.action.u.tdls_discover_resp.action_code =
2999 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3000 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3001 dialog_token;
3002 mgmt->u.action.u.tdls_discover_resp.capability =
3003 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3004
3005 ieee80211_add_srates_ie(sdata, skb, false, band);
3006 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3007 ieee80211_tdls_add_ext_capab(skb);
3008 break;
3009 default:
3010 return -EINVAL;
3011 }
3012
3013 return 0;
3014 }
3015
3016 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3017 u8 *peer, u8 action_code, u8 dialog_token,
3018 u16 status_code, const u8 *extra_ies,
3019 size_t extra_ies_len)
3020 {
3021 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3022 struct ieee80211_local *local = sdata->local;
3023 struct sk_buff *skb = NULL;
3024 bool send_direct;
3025 int ret;
3026
3027 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3028 return -ENOTSUPP;
3029
3030 /* make sure we are in managed mode, and associated */
3031 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3032 !sdata->u.mgd.associated)
3033 return -EINVAL;
3034
3035 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3036 action_code, peer);
3037
3038 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3039 max(sizeof(struct ieee80211_mgmt),
3040 sizeof(struct ieee80211_tdls_data)) +
3041 50 + /* supported rates */
3042 7 + /* ext capab */
3043 extra_ies_len +
3044 sizeof(struct ieee80211_tdls_lnkie));
3045 if (!skb)
3046 return -ENOMEM;
3047
3048 skb_reserve(skb, local->hw.extra_tx_headroom);
3049
3050 switch (action_code) {
3051 case WLAN_TDLS_SETUP_REQUEST:
3052 case WLAN_TDLS_SETUP_RESPONSE:
3053 case WLAN_TDLS_SETUP_CONFIRM:
3054 case WLAN_TDLS_TEARDOWN:
3055 case WLAN_TDLS_DISCOVERY_REQUEST:
3056 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3057 action_code, dialog_token,
3058 status_code, skb);
3059 send_direct = false;
3060 break;
3061 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3062 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3063 dialog_token, status_code,
3064 skb);
3065 send_direct = true;
3066 break;
3067 default:
3068 ret = -ENOTSUPP;
3069 break;
3070 }
3071
3072 if (ret < 0)
3073 goto fail;
3074
3075 if (extra_ies_len)
3076 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3077
3078 /* the TDLS link IE is always added last */
3079 switch (action_code) {
3080 case WLAN_TDLS_SETUP_REQUEST:
3081 case WLAN_TDLS_SETUP_CONFIRM:
3082 case WLAN_TDLS_TEARDOWN:
3083 case WLAN_TDLS_DISCOVERY_REQUEST:
3084 /* we are the initiator */
3085 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3086 sdata->u.mgd.bssid);
3087 break;
3088 case WLAN_TDLS_SETUP_RESPONSE:
3089 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3090 /* we are the responder */
3091 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3092 sdata->u.mgd.bssid);
3093 break;
3094 default:
3095 ret = -ENOTSUPP;
3096 goto fail;
3097 }
3098
3099 if (send_direct) {
3100 ieee80211_tx_skb(sdata, skb);
3101 return 0;
3102 }
3103
3104 /*
3105 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3106 * we should default to AC_VI.
3107 */
3108 switch (action_code) {
3109 case WLAN_TDLS_SETUP_REQUEST:
3110 case WLAN_TDLS_SETUP_RESPONSE:
3111 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3112 skb->priority = 2;
3113 break;
3114 default:
3115 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3116 skb->priority = 5;
3117 break;
3118 }
3119
3120 /* disable bottom halves when entering the Tx path */
3121 local_bh_disable();
3122 ret = ieee80211_subif_start_xmit(skb, dev);
3123 local_bh_enable();
3124
3125 return ret;
3126
3127 fail:
3128 dev_kfree_skb(skb);
3129 return ret;
3130 }
3131
3132 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3133 u8 *peer, enum nl80211_tdls_operation oper)
3134 {
3135 struct sta_info *sta;
3136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3137
3138 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3139 return -ENOTSUPP;
3140
3141 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3142 return -EINVAL;
3143
3144 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3145
3146 switch (oper) {
3147 case NL80211_TDLS_ENABLE_LINK:
3148 rcu_read_lock();
3149 sta = sta_info_get(sdata, peer);
3150 if (!sta) {
3151 rcu_read_unlock();
3152 return -ENOLINK;
3153 }
3154
3155 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3156 rcu_read_unlock();
3157 break;
3158 case NL80211_TDLS_DISABLE_LINK:
3159 return sta_info_destroy_addr(sdata, peer);
3160 case NL80211_TDLS_TEARDOWN:
3161 case NL80211_TDLS_SETUP:
3162 case NL80211_TDLS_DISCOVERY_REQ:
3163 /* We don't support in-driver setup/teardown/discovery */
3164 return -ENOTSUPP;
3165 default:
3166 return -ENOTSUPP;
3167 }
3168
3169 return 0;
3170 }
3171
3172 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3173 const u8 *peer, u64 *cookie)
3174 {
3175 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3176 struct ieee80211_local *local = sdata->local;
3177 struct ieee80211_qos_hdr *nullfunc;
3178 struct sk_buff *skb;
3179 int size = sizeof(*nullfunc);
3180 __le16 fc;
3181 bool qos;
3182 struct ieee80211_tx_info *info;
3183 struct sta_info *sta;
3184 struct ieee80211_chanctx_conf *chanctx_conf;
3185 enum ieee80211_band band;
3186
3187 rcu_read_lock();
3188 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3189 if (WARN_ON(!chanctx_conf)) {
3190 rcu_read_unlock();
3191 return -EINVAL;
3192 }
3193 band = chanctx_conf->def.chan->band;
3194 sta = sta_info_get(sdata, peer);
3195 if (sta) {
3196 qos = test_sta_flag(sta, WLAN_STA_WME);
3197 } else {
3198 rcu_read_unlock();
3199 return -ENOLINK;
3200 }
3201
3202 if (qos) {
3203 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3204 IEEE80211_STYPE_QOS_NULLFUNC |
3205 IEEE80211_FCTL_FROMDS);
3206 } else {
3207 size -= 2;
3208 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3209 IEEE80211_STYPE_NULLFUNC |
3210 IEEE80211_FCTL_FROMDS);
3211 }
3212
3213 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3214 if (!skb) {
3215 rcu_read_unlock();
3216 return -ENOMEM;
3217 }
3218
3219 skb->dev = dev;
3220
3221 skb_reserve(skb, local->hw.extra_tx_headroom);
3222
3223 nullfunc = (void *) skb_put(skb, size);
3224 nullfunc->frame_control = fc;
3225 nullfunc->duration_id = 0;
3226 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3227 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3228 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3229 nullfunc->seq_ctrl = 0;
3230
3231 info = IEEE80211_SKB_CB(skb);
3232
3233 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3234 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3235
3236 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3237 skb->priority = 7;
3238 if (qos)
3239 nullfunc->qos_ctrl = cpu_to_le16(7);
3240
3241 local_bh_disable();
3242 ieee80211_xmit(sdata, skb, band);
3243 local_bh_enable();
3244 rcu_read_unlock();
3245
3246 *cookie = (unsigned long) skb;
3247 return 0;
3248 }
3249
3250 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3251 struct wireless_dev *wdev,
3252 struct cfg80211_chan_def *chandef)
3253 {
3254 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3255 struct ieee80211_chanctx_conf *chanctx_conf;
3256 int ret = -ENODATA;
3257
3258 rcu_read_lock();
3259 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3260 if (chanctx_conf) {
3261 *chandef = chanctx_conf->def;
3262 ret = 0;
3263 }
3264 rcu_read_unlock();
3265
3266 return ret;
3267 }
3268
3269 #ifdef CONFIG_PM
3270 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3271 {
3272 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3273 }
3274 #endif
3275
3276 struct cfg80211_ops mac80211_config_ops = {
3277 .add_virtual_intf = ieee80211_add_iface,
3278 .del_virtual_intf = ieee80211_del_iface,
3279 .change_virtual_intf = ieee80211_change_iface,
3280 .start_p2p_device = ieee80211_start_p2p_device,
3281 .stop_p2p_device = ieee80211_stop_p2p_device,
3282 .add_key = ieee80211_add_key,
3283 .del_key = ieee80211_del_key,
3284 .get_key = ieee80211_get_key,
3285 .set_default_key = ieee80211_config_default_key,
3286 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3287 .start_ap = ieee80211_start_ap,
3288 .change_beacon = ieee80211_change_beacon,
3289 .stop_ap = ieee80211_stop_ap,
3290 .add_station = ieee80211_add_station,
3291 .del_station = ieee80211_del_station,
3292 .change_station = ieee80211_change_station,
3293 .get_station = ieee80211_get_station,
3294 .dump_station = ieee80211_dump_station,
3295 .dump_survey = ieee80211_dump_survey,
3296 #ifdef CONFIG_MAC80211_MESH
3297 .add_mpath = ieee80211_add_mpath,
3298 .del_mpath = ieee80211_del_mpath,
3299 .change_mpath = ieee80211_change_mpath,
3300 .get_mpath = ieee80211_get_mpath,
3301 .dump_mpath = ieee80211_dump_mpath,
3302 .update_mesh_config = ieee80211_update_mesh_config,
3303 .get_mesh_config = ieee80211_get_mesh_config,
3304 .join_mesh = ieee80211_join_mesh,
3305 .leave_mesh = ieee80211_leave_mesh,
3306 #endif
3307 .change_bss = ieee80211_change_bss,
3308 .set_txq_params = ieee80211_set_txq_params,
3309 .set_monitor_channel = ieee80211_set_monitor_channel,
3310 .suspend = ieee80211_suspend,
3311 .resume = ieee80211_resume,
3312 .scan = ieee80211_scan,
3313 .sched_scan_start = ieee80211_sched_scan_start,
3314 .sched_scan_stop = ieee80211_sched_scan_stop,
3315 .auth = ieee80211_auth,
3316 .assoc = ieee80211_assoc,
3317 .deauth = ieee80211_deauth,
3318 .disassoc = ieee80211_disassoc,
3319 .join_ibss = ieee80211_join_ibss,
3320 .leave_ibss = ieee80211_leave_ibss,
3321 .set_mcast_rate = ieee80211_set_mcast_rate,
3322 .set_wiphy_params = ieee80211_set_wiphy_params,
3323 .set_tx_power = ieee80211_set_tx_power,
3324 .get_tx_power = ieee80211_get_tx_power,
3325 .set_wds_peer = ieee80211_set_wds_peer,
3326 .rfkill_poll = ieee80211_rfkill_poll,
3327 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3328 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3329 .set_power_mgmt = ieee80211_set_power_mgmt,
3330 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3331 .remain_on_channel = ieee80211_remain_on_channel,
3332 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3333 .mgmt_tx = ieee80211_mgmt_tx,
3334 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3335 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3336 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3337 .set_antenna = ieee80211_set_antenna,
3338 .get_antenna = ieee80211_get_antenna,
3339 .set_ringparam = ieee80211_set_ringparam,
3340 .get_ringparam = ieee80211_get_ringparam,
3341 .set_rekey_data = ieee80211_set_rekey_data,
3342 .tdls_oper = ieee80211_tdls_oper,
3343 .tdls_mgmt = ieee80211_tdls_mgmt,
3344 .probe_client = ieee80211_probe_client,
3345 .set_noack_map = ieee80211_set_noack_map,
3346 #ifdef CONFIG_PM
3347 .set_wakeup = ieee80211_set_wakeup,
3348 #endif
3349 .get_et_sset_count = ieee80211_get_et_sset_count,
3350 .get_et_stats = ieee80211_get_et_stats,
3351 .get_et_strings = ieee80211_get_et_strings,
3352 .get_channel = ieee80211_cfg_get_channel,
3353 };
(deprecated) Btrfs devel tree