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[mirror_ubuntu-bionic-kernel.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24 const char *name,
25 enum nl80211_iftype type,
26 u32 *flags,
27 struct vif_params *params)
28 {
29 struct ieee80211_local *local = wiphy_priv(wiphy);
30 struct wireless_dev *wdev;
31 struct ieee80211_sub_if_data *sdata;
32 int err;
33
34 err = ieee80211_if_add(local, name, &wdev, type, params);
35 if (err)
36 return ERR_PTR(err);
37
38 if (type == NL80211_IFTYPE_MONITOR && flags) {
39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40 sdata->u.mntr_flags = *flags;
41 }
42
43 return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50 return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54 struct net_device *dev,
55 enum nl80211_iftype type, u32 *flags,
56 struct vif_params *params)
57 {
58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59 int ret;
60
61 ret = ieee80211_if_change_type(sdata, type);
62 if (ret)
63 return ret;
64
65 if (type == NL80211_IFTYPE_AP_VLAN &&
66 params && params->use_4addr == 0)
67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68 else if (type == NL80211_IFTYPE_STATION &&
69 params && params->use_4addr >= 0)
70 sdata->u.mgd.use_4addr = params->use_4addr;
71
72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73 struct ieee80211_local *local = sdata->local;
74
75 if (ieee80211_sdata_running(sdata)) {
76 /*
77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
78 * changed while the interface is up.
79 * Else we would need to add a lot of cruft
80 * to update everything:
81 * cooked_mntrs, monitor and all fif_* counters
82 * reconfigure hardware
83 */
84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
86 return -EBUSY;
87
88 ieee80211_adjust_monitor_flags(sdata, -1);
89 sdata->u.mntr_flags = *flags;
90 ieee80211_adjust_monitor_flags(sdata, 1);
91
92 ieee80211_configure_filter(local);
93 } else {
94 /*
95 * Because the interface is down, ieee80211_do_stop
96 * and ieee80211_do_open take care of "everything"
97 * mentioned in the comment above.
98 */
99 sdata->u.mntr_flags = *flags;
100 }
101 }
102
103 return 0;
104 }
105
106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
107 struct wireless_dev *wdev)
108 {
109 return ieee80211_do_open(wdev, true);
110 }
111
112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
116 }
117
118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
119 struct net_device *dev,
120 u16 noack_map)
121 {
122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
123
124 sdata->noack_map = noack_map;
125 return 0;
126 }
127
128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
129 u8 key_idx, bool pairwise, const u8 *mac_addr,
130 struct key_params *params)
131 {
132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
133 struct sta_info *sta = NULL;
134 struct ieee80211_key *key;
135 int err;
136
137 if (!ieee80211_sdata_running(sdata))
138 return -ENETDOWN;
139
140 /* reject WEP and TKIP keys if WEP failed to initialize */
141 switch (params->cipher) {
142 case WLAN_CIPHER_SUITE_WEP40:
143 case WLAN_CIPHER_SUITE_TKIP:
144 case WLAN_CIPHER_SUITE_WEP104:
145 if (IS_ERR(sdata->local->wep_tx_tfm))
146 return -EINVAL;
147 break;
148 default:
149 break;
150 }
151
152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
153 params->key, params->seq_len, params->seq);
154 if (IS_ERR(key))
155 return PTR_ERR(key);
156
157 if (pairwise)
158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
159
160 mutex_lock(&sdata->local->sta_mtx);
161
162 if (mac_addr) {
163 if (ieee80211_vif_is_mesh(&sdata->vif))
164 sta = sta_info_get(sdata, mac_addr);
165 else
166 sta = sta_info_get_bss(sdata, mac_addr);
167 /*
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 sdata->radar_required = params->radar_required;
932
933 err = ieee80211_vif_use_channel(sdata, &params->chandef,
934 IEEE80211_CHANCTX_SHARED);
935 if (err)
936 return err;
937 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
938
939 /*
940 * Apply control port protocol, this allows us to
941 * not encrypt dynamic WEP control frames.
942 */
943 sdata->control_port_protocol = params->crypto.control_port_ethertype;
944 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
945 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
946 vlan->control_port_protocol =
947 params->crypto.control_port_ethertype;
948 vlan->control_port_no_encrypt =
949 params->crypto.control_port_no_encrypt;
950 }
951
952 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
953 sdata->vif.bss_conf.dtim_period = params->dtim_period;
954 sdata->vif.bss_conf.enable_beacon = true;
955
956 sdata->vif.bss_conf.ssid_len = params->ssid_len;
957 if (params->ssid_len)
958 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
959 params->ssid_len);
960 sdata->vif.bss_conf.hidden_ssid =
961 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
962
963 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
964 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
965
966 err = ieee80211_assign_beacon(sdata, &params->beacon);
967 if (err < 0)
968 return err;
969 changed |= err;
970
971 err = drv_start_ap(sdata->local, sdata);
972 if (err) {
973 old = rtnl_dereference(sdata->u.ap.beacon);
974 if (old)
975 kfree_rcu(old, rcu_head);
976 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
977 return err;
978 }
979
980 ieee80211_bss_info_change_notify(sdata, changed);
981
982 netif_carrier_on(dev);
983 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
984 netif_carrier_on(vlan->dev);
985
986 return 0;
987 }
988
989 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
990 struct cfg80211_beacon_data *params)
991 {
992 struct ieee80211_sub_if_data *sdata;
993 struct beacon_data *old;
994 int err;
995
996 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
997
998 old = rtnl_dereference(sdata->u.ap.beacon);
999 if (!old)
1000 return -ENOENT;
1001
1002 err = ieee80211_assign_beacon(sdata, params);
1003 if (err < 0)
1004 return err;
1005 ieee80211_bss_info_change_notify(sdata, err);
1006 return 0;
1007 }
1008
1009 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1010 {
1011 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1012 struct ieee80211_sub_if_data *vlan;
1013 struct ieee80211_local *local = sdata->local;
1014 struct beacon_data *old_beacon;
1015 struct probe_resp *old_probe_resp;
1016
1017 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1018 if (!old_beacon)
1019 return -ENOENT;
1020 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1021
1022 /* turn off carrier for this interface and dependent VLANs */
1023 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1024 netif_carrier_off(vlan->dev);
1025 netif_carrier_off(dev);
1026
1027 /* remove beacon and probe response */
1028 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1029 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1030 kfree_rcu(old_beacon, rcu_head);
1031 if (old_probe_resp)
1032 kfree_rcu(old_probe_resp, rcu_head);
1033
1034 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1035 sta_info_flush_defer(vlan);
1036 sta_info_flush_defer(sdata);
1037 rcu_barrier();
1038 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1039 sta_info_flush_cleanup(vlan);
1040 sta_info_flush_cleanup(sdata);
1041
1042 sdata->vif.bss_conf.enable_beacon = false;
1043 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1044 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1045
1046 drv_stop_ap(sdata->local, sdata);
1047
1048 /* free all potentially still buffered bcast frames */
1049 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1050 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1051
1052 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1053 ieee80211_vif_release_channel(sdata);
1054
1055 return 0;
1056 }
1057
1058 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1059 struct iapp_layer2_update {
1060 u8 da[ETH_ALEN]; /* broadcast */
1061 u8 sa[ETH_ALEN]; /* STA addr */
1062 __be16 len; /* 6 */
1063 u8 dsap; /* 0 */
1064 u8 ssap; /* 0 */
1065 u8 control;
1066 u8 xid_info[3];
1067 } __packed;
1068
1069 static void ieee80211_send_layer2_update(struct sta_info *sta)
1070 {
1071 struct iapp_layer2_update *msg;
1072 struct sk_buff *skb;
1073
1074 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1075 * bridge devices */
1076
1077 skb = dev_alloc_skb(sizeof(*msg));
1078 if (!skb)
1079 return;
1080 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1081
1082 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1083 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1084
1085 eth_broadcast_addr(msg->da);
1086 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1087 msg->len = htons(6);
1088 msg->dsap = 0;
1089 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1090 msg->control = 0xaf; /* XID response lsb.1111F101.
1091 * F=0 (no poll command; unsolicited frame) */
1092 msg->xid_info[0] = 0x81; /* XID format identifier */
1093 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1094 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1095
1096 skb->dev = sta->sdata->dev;
1097 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1098 memset(skb->cb, 0, sizeof(skb->cb));
1099 netif_rx_ni(skb);
1100 }
1101
1102 static int sta_apply_auth_flags(struct ieee80211_local *local,
1103 struct sta_info *sta,
1104 u32 mask, u32 set)
1105 {
1106 int ret;
1107
1108 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1109 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1110 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1111 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1112 if (ret)
1113 return ret;
1114 }
1115
1116 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1117 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1118 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1119 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1120 if (ret)
1121 return ret;
1122 }
1123
1124 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1125 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1126 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1127 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1128 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1129 else
1130 ret = 0;
1131 if (ret)
1132 return ret;
1133 }
1134
1135 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1136 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1137 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1138 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1139 if (ret)
1140 return ret;
1141 }
1142
1143 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1144 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1145 test_sta_flag(sta, WLAN_STA_AUTH)) {
1146 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1147 if (ret)
1148 return ret;
1149 }
1150
1151 return 0;
1152 }
1153
1154 static int sta_apply_parameters(struct ieee80211_local *local,
1155 struct sta_info *sta,
1156 struct station_parameters *params)
1157 {
1158 int ret = 0;
1159 u32 rates;
1160 int i, j;
1161 struct ieee80211_supported_band *sband;
1162 struct ieee80211_sub_if_data *sdata = sta->sdata;
1163 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1164 u32 mask, set;
1165
1166 sband = local->hw.wiphy->bands[band];
1167
1168 mask = params->sta_flags_mask;
1169 set = params->sta_flags_set;
1170
1171 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1172 /*
1173 * In mesh mode, ASSOCIATED isn't part of the nl80211
1174 * API but must follow AUTHENTICATED for driver state.
1175 */
1176 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1177 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1178 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1179 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1180 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1181 /*
1182 * TDLS -- everything follows authorized, but
1183 * only becoming authorized is possible, not
1184 * going back
1185 */
1186 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1187 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1188 BIT(NL80211_STA_FLAG_ASSOCIATED);
1189 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1190 BIT(NL80211_STA_FLAG_ASSOCIATED);
1191 }
1192 }
1193
1194 ret = sta_apply_auth_flags(local, sta, mask, set);
1195 if (ret)
1196 return ret;
1197
1198 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1199 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1200 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1201 else
1202 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1203 }
1204
1205 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1206 if (set & BIT(NL80211_STA_FLAG_WME)) {
1207 set_sta_flag(sta, WLAN_STA_WME);
1208 sta->sta.wme = true;
1209 } else {
1210 clear_sta_flag(sta, WLAN_STA_WME);
1211 sta->sta.wme = false;
1212 }
1213 }
1214
1215 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1216 if (set & BIT(NL80211_STA_FLAG_MFP))
1217 set_sta_flag(sta, WLAN_STA_MFP);
1218 else
1219 clear_sta_flag(sta, WLAN_STA_MFP);
1220 }
1221
1222 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1223 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1224 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1225 else
1226 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1227 }
1228
1229 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1230 sta->sta.uapsd_queues = params->uapsd_queues;
1231 sta->sta.max_sp = params->max_sp;
1232 }
1233
1234 /*
1235 * cfg80211 validates this (1-2007) and allows setting the AID
1236 * only when creating a new station entry
1237 */
1238 if (params->aid)
1239 sta->sta.aid = params->aid;
1240
1241 /*
1242 * Some of the following updates would be racy if called on an
1243 * existing station, via ieee80211_change_station(). However,
1244 * all such changes are rejected by cfg80211 except for updates
1245 * changing the supported rates on an existing but not yet used
1246 * TDLS peer.
1247 */
1248
1249 if (params->listen_interval >= 0)
1250 sta->listen_interval = params->listen_interval;
1251
1252 if (params->supported_rates) {
1253 rates = 0;
1254
1255 for (i = 0; i < params->supported_rates_len; i++) {
1256 int rate = (params->supported_rates[i] & 0x7f) * 5;
1257 for (j = 0; j < sband->n_bitrates; j++) {
1258 if (sband->bitrates[j].bitrate == rate)
1259 rates |= BIT(j);
1260 }
1261 }
1262 sta->sta.supp_rates[band] = rates;
1263 }
1264
1265 if (params->ht_capa)
1266 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1267 params->ht_capa, sta);
1268
1269 if (params->vht_capa)
1270 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1271 params->vht_capa, sta);
1272
1273 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1274 #ifdef CONFIG_MAC80211_MESH
1275 u32 changed = 0;
1276
1277 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1278 switch (params->plink_state) {
1279 case NL80211_PLINK_ESTAB:
1280 if (sta->plink_state != NL80211_PLINK_ESTAB)
1281 changed = mesh_plink_inc_estab_count(
1282 sdata);
1283 sta->plink_state = params->plink_state;
1284
1285 ieee80211_mps_sta_status_update(sta);
1286 changed |= ieee80211_mps_set_sta_local_pm(sta,
1287 sdata->u.mesh.mshcfg.power_mode);
1288 break;
1289 case NL80211_PLINK_LISTEN:
1290 case NL80211_PLINK_BLOCKED:
1291 case NL80211_PLINK_OPN_SNT:
1292 case NL80211_PLINK_OPN_RCVD:
1293 case NL80211_PLINK_CNF_RCVD:
1294 case NL80211_PLINK_HOLDING:
1295 if (sta->plink_state == NL80211_PLINK_ESTAB)
1296 changed = mesh_plink_dec_estab_count(
1297 sdata);
1298 sta->plink_state = params->plink_state;
1299
1300 ieee80211_mps_sta_status_update(sta);
1301 changed |=
1302 ieee80211_mps_local_status_update(sdata);
1303 break;
1304 default:
1305 /* nothing */
1306 break;
1307 }
1308 }
1309
1310 switch (params->plink_action) {
1311 case NL80211_PLINK_ACTION_NO_ACTION:
1312 /* nothing */
1313 break;
1314 case NL80211_PLINK_ACTION_OPEN:
1315 changed |= mesh_plink_open(sta);
1316 break;
1317 case NL80211_PLINK_ACTION_BLOCK:
1318 changed |= mesh_plink_block(sta);
1319 break;
1320 }
1321
1322 if (params->local_pm)
1323 changed |=
1324 ieee80211_mps_set_sta_local_pm(sta,
1325 params->local_pm);
1326 ieee80211_bss_info_change_notify(sdata, changed);
1327 #endif
1328 }
1329
1330 return 0;
1331 }
1332
1333 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1334 u8 *mac, struct station_parameters *params)
1335 {
1336 struct ieee80211_local *local = wiphy_priv(wiphy);
1337 struct sta_info *sta;
1338 struct ieee80211_sub_if_data *sdata;
1339 int err;
1340 int layer2_update;
1341
1342 if (params->vlan) {
1343 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1344
1345 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1346 sdata->vif.type != NL80211_IFTYPE_AP)
1347 return -EINVAL;
1348 } else
1349 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1350
1351 if (ether_addr_equal(mac, sdata->vif.addr))
1352 return -EINVAL;
1353
1354 if (is_multicast_ether_addr(mac))
1355 return -EINVAL;
1356
1357 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1358 if (!sta)
1359 return -ENOMEM;
1360
1361 /*
1362 * defaults -- if userspace wants something else we'll
1363 * change it accordingly in sta_apply_parameters()
1364 */
1365 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1366 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1367 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1368 }
1369
1370 err = sta_apply_parameters(local, sta, params);
1371 if (err) {
1372 sta_info_free(local, sta);
1373 return err;
1374 }
1375
1376 /*
1377 * for TDLS, rate control should be initialized only when
1378 * rates are known and station is marked authorized
1379 */
1380 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1381 rate_control_rate_init(sta);
1382
1383 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1384 sdata->vif.type == NL80211_IFTYPE_AP;
1385
1386 err = sta_info_insert_rcu(sta);
1387 if (err) {
1388 rcu_read_unlock();
1389 return err;
1390 }
1391
1392 if (layer2_update)
1393 ieee80211_send_layer2_update(sta);
1394
1395 rcu_read_unlock();
1396
1397 return 0;
1398 }
1399
1400 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1401 u8 *mac)
1402 {
1403 struct ieee80211_sub_if_data *sdata;
1404
1405 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1406
1407 if (mac)
1408 return sta_info_destroy_addr_bss(sdata, mac);
1409
1410 sta_info_flush(sdata);
1411 return 0;
1412 }
1413
1414 static int ieee80211_change_station(struct wiphy *wiphy,
1415 struct net_device *dev, u8 *mac,
1416 struct station_parameters *params)
1417 {
1418 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1419 struct ieee80211_local *local = wiphy_priv(wiphy);
1420 struct sta_info *sta;
1421 struct ieee80211_sub_if_data *vlansdata;
1422 enum cfg80211_station_type statype;
1423 int err;
1424
1425 mutex_lock(&local->sta_mtx);
1426
1427 sta = sta_info_get_bss(sdata, mac);
1428 if (!sta) {
1429 err = -ENOENT;
1430 goto out_err;
1431 }
1432
1433 switch (sdata->vif.type) {
1434 case NL80211_IFTYPE_MESH_POINT:
1435 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1436 statype = CFG80211_STA_MESH_PEER_SECURE;
1437 else
1438 statype = CFG80211_STA_MESH_PEER_NONSEC;
1439 break;
1440 case NL80211_IFTYPE_ADHOC:
1441 statype = CFG80211_STA_IBSS;
1442 break;
1443 case NL80211_IFTYPE_STATION:
1444 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1445 statype = CFG80211_STA_AP_STA;
1446 break;
1447 }
1448 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1449 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1450 else
1451 statype = CFG80211_STA_TDLS_PEER_SETUP;
1452 break;
1453 case NL80211_IFTYPE_AP:
1454 case NL80211_IFTYPE_AP_VLAN:
1455 statype = CFG80211_STA_AP_CLIENT;
1456 break;
1457 default:
1458 err = -EOPNOTSUPP;
1459 goto out_err;
1460 }
1461
1462 err = cfg80211_check_station_change(wiphy, params, statype);
1463 if (err)
1464 goto out_err;
1465
1466 if (params->vlan && params->vlan != sta->sdata->dev) {
1467 bool prev_4addr = false;
1468 bool new_4addr = false;
1469
1470 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1471
1472 if (params->vlan->ieee80211_ptr->use_4addr) {
1473 if (vlansdata->u.vlan.sta) {
1474 err = -EBUSY;
1475 goto out_err;
1476 }
1477
1478 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1479 new_4addr = true;
1480 }
1481
1482 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1483 sta->sdata->u.vlan.sta) {
1484 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1485 prev_4addr = true;
1486 }
1487
1488 sta->sdata = vlansdata;
1489
1490 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1491 prev_4addr != new_4addr) {
1492 if (new_4addr)
1493 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1494 else
1495 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1496 }
1497
1498 ieee80211_send_layer2_update(sta);
1499 }
1500
1501 err = sta_apply_parameters(local, sta, params);
1502 if (err)
1503 goto out_err;
1504
1505 /* When peer becomes authorized, init rate control as well */
1506 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1507 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1508 rate_control_rate_init(sta);
1509
1510 mutex_unlock(&local->sta_mtx);
1511
1512 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1513 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1514 ieee80211_recalc_ps(local, -1);
1515 ieee80211_recalc_ps_vif(sdata);
1516 }
1517
1518 return 0;
1519 out_err:
1520 mutex_unlock(&local->sta_mtx);
1521 return err;
1522 }
1523
1524 #ifdef CONFIG_MAC80211_MESH
1525 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1526 u8 *dst, u8 *next_hop)
1527 {
1528 struct ieee80211_sub_if_data *sdata;
1529 struct mesh_path *mpath;
1530 struct sta_info *sta;
1531 int err;
1532
1533 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1534
1535 rcu_read_lock();
1536 sta = sta_info_get(sdata, next_hop);
1537 if (!sta) {
1538 rcu_read_unlock();
1539 return -ENOENT;
1540 }
1541
1542 err = mesh_path_add(sdata, dst);
1543 if (err) {
1544 rcu_read_unlock();
1545 return err;
1546 }
1547
1548 mpath = mesh_path_lookup(sdata, dst);
1549 if (!mpath) {
1550 rcu_read_unlock();
1551 return -ENXIO;
1552 }
1553 mesh_path_fix_nexthop(mpath, sta);
1554
1555 rcu_read_unlock();
1556 return 0;
1557 }
1558
1559 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1560 u8 *dst)
1561 {
1562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1563
1564 if (dst)
1565 return mesh_path_del(sdata, dst);
1566
1567 mesh_path_flush_by_iface(sdata);
1568 return 0;
1569 }
1570
1571 static int ieee80211_change_mpath(struct wiphy *wiphy,
1572 struct net_device *dev,
1573 u8 *dst, u8 *next_hop)
1574 {
1575 struct ieee80211_sub_if_data *sdata;
1576 struct mesh_path *mpath;
1577 struct sta_info *sta;
1578
1579 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1580
1581 rcu_read_lock();
1582
1583 sta = sta_info_get(sdata, next_hop);
1584 if (!sta) {
1585 rcu_read_unlock();
1586 return -ENOENT;
1587 }
1588
1589 mpath = mesh_path_lookup(sdata, dst);
1590 if (!mpath) {
1591 rcu_read_unlock();
1592 return -ENOENT;
1593 }
1594
1595 mesh_path_fix_nexthop(mpath, sta);
1596
1597 rcu_read_unlock();
1598 return 0;
1599 }
1600
1601 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1602 struct mpath_info *pinfo)
1603 {
1604 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1605
1606 if (next_hop_sta)
1607 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1608 else
1609 memset(next_hop, 0, ETH_ALEN);
1610
1611 memset(pinfo, 0, sizeof(*pinfo));
1612
1613 pinfo->generation = mesh_paths_generation;
1614
1615 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1616 MPATH_INFO_SN |
1617 MPATH_INFO_METRIC |
1618 MPATH_INFO_EXPTIME |
1619 MPATH_INFO_DISCOVERY_TIMEOUT |
1620 MPATH_INFO_DISCOVERY_RETRIES |
1621 MPATH_INFO_FLAGS;
1622
1623 pinfo->frame_qlen = mpath->frame_queue.qlen;
1624 pinfo->sn = mpath->sn;
1625 pinfo->metric = mpath->metric;
1626 if (time_before(jiffies, mpath->exp_time))
1627 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1628 pinfo->discovery_timeout =
1629 jiffies_to_msecs(mpath->discovery_timeout);
1630 pinfo->discovery_retries = mpath->discovery_retries;
1631 if (mpath->flags & MESH_PATH_ACTIVE)
1632 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1633 if (mpath->flags & MESH_PATH_RESOLVING)
1634 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1635 if (mpath->flags & MESH_PATH_SN_VALID)
1636 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1637 if (mpath->flags & MESH_PATH_FIXED)
1638 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1639 if (mpath->flags & MESH_PATH_RESOLVED)
1640 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1641 }
1642
1643 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1644 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1645
1646 {
1647 struct ieee80211_sub_if_data *sdata;
1648 struct mesh_path *mpath;
1649
1650 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1651
1652 rcu_read_lock();
1653 mpath = mesh_path_lookup(sdata, dst);
1654 if (!mpath) {
1655 rcu_read_unlock();
1656 return -ENOENT;
1657 }
1658 memcpy(dst, mpath->dst, ETH_ALEN);
1659 mpath_set_pinfo(mpath, next_hop, pinfo);
1660 rcu_read_unlock();
1661 return 0;
1662 }
1663
1664 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1665 int idx, u8 *dst, u8 *next_hop,
1666 struct mpath_info *pinfo)
1667 {
1668 struct ieee80211_sub_if_data *sdata;
1669 struct mesh_path *mpath;
1670
1671 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1672
1673 rcu_read_lock();
1674 mpath = mesh_path_lookup_by_idx(sdata, idx);
1675 if (!mpath) {
1676 rcu_read_unlock();
1677 return -ENOENT;
1678 }
1679 memcpy(dst, mpath->dst, ETH_ALEN);
1680 mpath_set_pinfo(mpath, next_hop, pinfo);
1681 rcu_read_unlock();
1682 return 0;
1683 }
1684
1685 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1686 struct net_device *dev,
1687 struct mesh_config *conf)
1688 {
1689 struct ieee80211_sub_if_data *sdata;
1690 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1691
1692 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1693 return 0;
1694 }
1695
1696 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1697 {
1698 return (mask >> (parm-1)) & 0x1;
1699 }
1700
1701 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1702 const struct mesh_setup *setup)
1703 {
1704 u8 *new_ie;
1705 const u8 *old_ie;
1706 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1707 struct ieee80211_sub_if_data, u.mesh);
1708
1709 /* allocate information elements */
1710 new_ie = NULL;
1711 old_ie = ifmsh->ie;
1712
1713 if (setup->ie_len) {
1714 new_ie = kmemdup(setup->ie, setup->ie_len,
1715 GFP_KERNEL);
1716 if (!new_ie)
1717 return -ENOMEM;
1718 }
1719 ifmsh->ie_len = setup->ie_len;
1720 ifmsh->ie = new_ie;
1721 kfree(old_ie);
1722
1723 /* now copy the rest of the setup parameters */
1724 ifmsh->mesh_id_len = setup->mesh_id_len;
1725 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1726 ifmsh->mesh_sp_id = setup->sync_method;
1727 ifmsh->mesh_pp_id = setup->path_sel_proto;
1728 ifmsh->mesh_pm_id = setup->path_metric;
1729 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1730 if (setup->is_authenticated)
1731 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1732 if (setup->is_secure)
1733 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1734
1735 /* mcast rate setting in Mesh Node */
1736 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1737 sizeof(setup->mcast_rate));
1738
1739 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1740 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1741
1742 return 0;
1743 }
1744
1745 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1746 struct net_device *dev, u32 mask,
1747 const struct mesh_config *nconf)
1748 {
1749 struct mesh_config *conf;
1750 struct ieee80211_sub_if_data *sdata;
1751 struct ieee80211_if_mesh *ifmsh;
1752
1753 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1754 ifmsh = &sdata->u.mesh;
1755
1756 /* Set the config options which we are interested in setting */
1757 conf = &(sdata->u.mesh.mshcfg);
1758 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1759 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1760 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1761 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1762 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1763 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1764 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1765 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1766 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1767 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1768 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1769 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1770 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1771 conf->element_ttl = nconf->element_ttl;
1772 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1773 conf->auto_open_plinks = nconf->auto_open_plinks;
1774 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1775 conf->dot11MeshNbrOffsetMaxNeighbor =
1776 nconf->dot11MeshNbrOffsetMaxNeighbor;
1777 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1778 conf->dot11MeshHWMPmaxPREQretries =
1779 nconf->dot11MeshHWMPmaxPREQretries;
1780 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1781 conf->path_refresh_time = nconf->path_refresh_time;
1782 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1783 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1784 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1785 conf->dot11MeshHWMPactivePathTimeout =
1786 nconf->dot11MeshHWMPactivePathTimeout;
1787 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1788 conf->dot11MeshHWMPpreqMinInterval =
1789 nconf->dot11MeshHWMPpreqMinInterval;
1790 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1791 conf->dot11MeshHWMPperrMinInterval =
1792 nconf->dot11MeshHWMPperrMinInterval;
1793 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1794 mask))
1795 conf->dot11MeshHWMPnetDiameterTraversalTime =
1796 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1797 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1798 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1799 ieee80211_mesh_root_setup(ifmsh);
1800 }
1801 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1802 /* our current gate announcement implementation rides on root
1803 * announcements, so require this ifmsh to also be a root node
1804 * */
1805 if (nconf->dot11MeshGateAnnouncementProtocol &&
1806 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1807 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1808 ieee80211_mesh_root_setup(ifmsh);
1809 }
1810 conf->dot11MeshGateAnnouncementProtocol =
1811 nconf->dot11MeshGateAnnouncementProtocol;
1812 }
1813 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1814 conf->dot11MeshHWMPRannInterval =
1815 nconf->dot11MeshHWMPRannInterval;
1816 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1817 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1818 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1819 /* our RSSI threshold implementation is supported only for
1820 * devices that report signal in dBm.
1821 */
1822 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1823 return -ENOTSUPP;
1824 conf->rssi_threshold = nconf->rssi_threshold;
1825 }
1826 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1827 conf->ht_opmode = nconf->ht_opmode;
1828 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1829 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1830 }
1831 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1832 conf->dot11MeshHWMPactivePathToRootTimeout =
1833 nconf->dot11MeshHWMPactivePathToRootTimeout;
1834 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1835 conf->dot11MeshHWMProotInterval =
1836 nconf->dot11MeshHWMProotInterval;
1837 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1838 conf->dot11MeshHWMPconfirmationInterval =
1839 nconf->dot11MeshHWMPconfirmationInterval;
1840 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1841 conf->power_mode = nconf->power_mode;
1842 ieee80211_mps_local_status_update(sdata);
1843 }
1844 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1845 conf->dot11MeshAwakeWindowDuration =
1846 nconf->dot11MeshAwakeWindowDuration;
1847 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1848 return 0;
1849 }
1850
1851 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1852 const struct mesh_config *conf,
1853 const struct mesh_setup *setup)
1854 {
1855 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1856 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1857 int err;
1858
1859 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1860 err = copy_mesh_setup(ifmsh, setup);
1861 if (err)
1862 return err;
1863
1864 /* can mesh use other SMPS modes? */
1865 sdata->smps_mode = IEEE80211_SMPS_OFF;
1866 sdata->needed_rx_chains = sdata->local->rx_chains;
1867
1868 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1869 IEEE80211_CHANCTX_SHARED);
1870 if (err)
1871 return err;
1872
1873 return ieee80211_start_mesh(sdata);
1874 }
1875
1876 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1877 {
1878 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1879
1880 ieee80211_stop_mesh(sdata);
1881 ieee80211_vif_release_channel(sdata);
1882
1883 return 0;
1884 }
1885 #endif
1886
1887 static int ieee80211_change_bss(struct wiphy *wiphy,
1888 struct net_device *dev,
1889 struct bss_parameters *params)
1890 {
1891 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1892 enum ieee80211_band band;
1893 u32 changed = 0;
1894
1895 if (!rtnl_dereference(sdata->u.ap.beacon))
1896 return -ENOENT;
1897
1898 band = ieee80211_get_sdata_band(sdata);
1899
1900 if (params->use_cts_prot >= 0) {
1901 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1902 changed |= BSS_CHANGED_ERP_CTS_PROT;
1903 }
1904 if (params->use_short_preamble >= 0) {
1905 sdata->vif.bss_conf.use_short_preamble =
1906 params->use_short_preamble;
1907 changed |= BSS_CHANGED_ERP_PREAMBLE;
1908 }
1909
1910 if (!sdata->vif.bss_conf.use_short_slot &&
1911 band == IEEE80211_BAND_5GHZ) {
1912 sdata->vif.bss_conf.use_short_slot = true;
1913 changed |= BSS_CHANGED_ERP_SLOT;
1914 }
1915
1916 if (params->use_short_slot_time >= 0) {
1917 sdata->vif.bss_conf.use_short_slot =
1918 params->use_short_slot_time;
1919 changed |= BSS_CHANGED_ERP_SLOT;
1920 }
1921
1922 if (params->basic_rates) {
1923 int i, j;
1924 u32 rates = 0;
1925 struct ieee80211_supported_band *sband = wiphy->bands[band];
1926
1927 for (i = 0; i < params->basic_rates_len; i++) {
1928 int rate = (params->basic_rates[i] & 0x7f) * 5;
1929 for (j = 0; j < sband->n_bitrates; j++) {
1930 if (sband->bitrates[j].bitrate == rate)
1931 rates |= BIT(j);
1932 }
1933 }
1934 sdata->vif.bss_conf.basic_rates = rates;
1935 changed |= BSS_CHANGED_BASIC_RATES;
1936 }
1937
1938 if (params->ap_isolate >= 0) {
1939 if (params->ap_isolate)
1940 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1941 else
1942 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1943 }
1944
1945 if (params->ht_opmode >= 0) {
1946 sdata->vif.bss_conf.ht_operation_mode =
1947 (u16) params->ht_opmode;
1948 changed |= BSS_CHANGED_HT;
1949 }
1950
1951 if (params->p2p_ctwindow >= 0) {
1952 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1953 changed |= BSS_CHANGED_P2P_PS;
1954 }
1955
1956 if (params->p2p_opp_ps >= 0) {
1957 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1958 changed |= BSS_CHANGED_P2P_PS;
1959 }
1960
1961 ieee80211_bss_info_change_notify(sdata, changed);
1962
1963 return 0;
1964 }
1965
1966 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1967 struct net_device *dev,
1968 struct ieee80211_txq_params *params)
1969 {
1970 struct ieee80211_local *local = wiphy_priv(wiphy);
1971 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1972 struct ieee80211_tx_queue_params p;
1973
1974 if (!local->ops->conf_tx)
1975 return -EOPNOTSUPP;
1976
1977 if (local->hw.queues < IEEE80211_NUM_ACS)
1978 return -EOPNOTSUPP;
1979
1980 memset(&p, 0, sizeof(p));
1981 p.aifs = params->aifs;
1982 p.cw_max = params->cwmax;
1983 p.cw_min = params->cwmin;
1984 p.txop = params->txop;
1985
1986 /*
1987 * Setting tx queue params disables u-apsd because it's only
1988 * called in master mode.
1989 */
1990 p.uapsd = false;
1991
1992 sdata->tx_conf[params->ac] = p;
1993 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1994 wiphy_debug(local->hw.wiphy,
1995 "failed to set TX queue parameters for AC %d\n",
1996 params->ac);
1997 return -EINVAL;
1998 }
1999
2000 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2001
2002 return 0;
2003 }
2004
2005 #ifdef CONFIG_PM
2006 static int ieee80211_suspend(struct wiphy *wiphy,
2007 struct cfg80211_wowlan *wowlan)
2008 {
2009 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2010 }
2011
2012 static int ieee80211_resume(struct wiphy *wiphy)
2013 {
2014 return __ieee80211_resume(wiphy_priv(wiphy));
2015 }
2016 #else
2017 #define ieee80211_suspend NULL
2018 #define ieee80211_resume NULL
2019 #endif
2020
2021 static int ieee80211_scan(struct wiphy *wiphy,
2022 struct cfg80211_scan_request *req)
2023 {
2024 struct ieee80211_sub_if_data *sdata;
2025
2026 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2027
2028 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2029 case NL80211_IFTYPE_STATION:
2030 case NL80211_IFTYPE_ADHOC:
2031 case NL80211_IFTYPE_MESH_POINT:
2032 case NL80211_IFTYPE_P2P_CLIENT:
2033 case NL80211_IFTYPE_P2P_DEVICE:
2034 break;
2035 case NL80211_IFTYPE_P2P_GO:
2036 if (sdata->local->ops->hw_scan)
2037 break;
2038 /*
2039 * FIXME: implement NoA while scanning in software,
2040 * for now fall through to allow scanning only when
2041 * beaconing hasn't been configured yet
2042 */
2043 case NL80211_IFTYPE_AP:
2044 /*
2045 * If the scan has been forced (and the driver supports
2046 * forcing), don't care about being beaconing already.
2047 * This will create problems to the attached stations (e.g. all
2048 * the frames sent while scanning on other channel will be
2049 * lost)
2050 */
2051 if (sdata->u.ap.beacon &&
2052 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2053 !(req->flags & NL80211_SCAN_FLAG_AP)))
2054 return -EOPNOTSUPP;
2055 break;
2056 default:
2057 return -EOPNOTSUPP;
2058 }
2059
2060 return ieee80211_request_scan(sdata, req);
2061 }
2062
2063 static int
2064 ieee80211_sched_scan_start(struct wiphy *wiphy,
2065 struct net_device *dev,
2066 struct cfg80211_sched_scan_request *req)
2067 {
2068 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2069
2070 if (!sdata->local->ops->sched_scan_start)
2071 return -EOPNOTSUPP;
2072
2073 return ieee80211_request_sched_scan_start(sdata, req);
2074 }
2075
2076 static int
2077 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2078 {
2079 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2080
2081 if (!sdata->local->ops->sched_scan_stop)
2082 return -EOPNOTSUPP;
2083
2084 return ieee80211_request_sched_scan_stop(sdata);
2085 }
2086
2087 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2088 struct cfg80211_auth_request *req)
2089 {
2090 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2091 }
2092
2093 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2094 struct cfg80211_assoc_request *req)
2095 {
2096 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2097 }
2098
2099 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2100 struct cfg80211_deauth_request *req)
2101 {
2102 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2103 }
2104
2105 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2106 struct cfg80211_disassoc_request *req)
2107 {
2108 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2109 }
2110
2111 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2112 struct cfg80211_ibss_params *params)
2113 {
2114 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2115 }
2116
2117 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2118 {
2119 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2120 }
2121
2122 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2123 int rate[IEEE80211_NUM_BANDS])
2124 {
2125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2126
2127 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2128 sizeof(int) * IEEE80211_NUM_BANDS);
2129
2130 return 0;
2131 }
2132
2133 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2134 {
2135 struct ieee80211_local *local = wiphy_priv(wiphy);
2136 int err;
2137
2138 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2139 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2140
2141 if (err)
2142 return err;
2143 }
2144
2145 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2146 err = drv_set_coverage_class(local, wiphy->coverage_class);
2147
2148 if (err)
2149 return err;
2150 }
2151
2152 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2153 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2154
2155 if (err)
2156 return err;
2157 }
2158
2159 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2160 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2161 return -EINVAL;
2162 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2163 }
2164 if (changed & WIPHY_PARAM_RETRY_LONG) {
2165 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2166 return -EINVAL;
2167 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2168 }
2169 if (changed &
2170 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2171 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2172
2173 return 0;
2174 }
2175
2176 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2177 struct wireless_dev *wdev,
2178 enum nl80211_tx_power_setting type, int mbm)
2179 {
2180 struct ieee80211_local *local = wiphy_priv(wiphy);
2181 struct ieee80211_sub_if_data *sdata;
2182
2183 if (wdev) {
2184 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2185
2186 switch (type) {
2187 case NL80211_TX_POWER_AUTOMATIC:
2188 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2189 break;
2190 case NL80211_TX_POWER_LIMITED:
2191 case NL80211_TX_POWER_FIXED:
2192 if (mbm < 0 || (mbm % 100))
2193 return -EOPNOTSUPP;
2194 sdata->user_power_level = MBM_TO_DBM(mbm);
2195 break;
2196 }
2197
2198 ieee80211_recalc_txpower(sdata);
2199
2200 return 0;
2201 }
2202
2203 switch (type) {
2204 case NL80211_TX_POWER_AUTOMATIC:
2205 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2206 break;
2207 case NL80211_TX_POWER_LIMITED:
2208 case NL80211_TX_POWER_FIXED:
2209 if (mbm < 0 || (mbm % 100))
2210 return -EOPNOTSUPP;
2211 local->user_power_level = MBM_TO_DBM(mbm);
2212 break;
2213 }
2214
2215 mutex_lock(&local->iflist_mtx);
2216 list_for_each_entry(sdata, &local->interfaces, list)
2217 sdata->user_power_level = local->user_power_level;
2218 list_for_each_entry(sdata, &local->interfaces, list)
2219 ieee80211_recalc_txpower(sdata);
2220 mutex_unlock(&local->iflist_mtx);
2221
2222 return 0;
2223 }
2224
2225 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2226 struct wireless_dev *wdev,
2227 int *dbm)
2228 {
2229 struct ieee80211_local *local = wiphy_priv(wiphy);
2230 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2231
2232 if (!local->use_chanctx)
2233 *dbm = local->hw.conf.power_level;
2234 else
2235 *dbm = sdata->vif.bss_conf.txpower;
2236
2237 return 0;
2238 }
2239
2240 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2241 const u8 *addr)
2242 {
2243 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2244
2245 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2246
2247 return 0;
2248 }
2249
2250 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2251 {
2252 struct ieee80211_local *local = wiphy_priv(wiphy);
2253
2254 drv_rfkill_poll(local);
2255 }
2256
2257 #ifdef CONFIG_NL80211_TESTMODE
2258 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2259 {
2260 struct ieee80211_local *local = wiphy_priv(wiphy);
2261
2262 if (!local->ops->testmode_cmd)
2263 return -EOPNOTSUPP;
2264
2265 return local->ops->testmode_cmd(&local->hw, data, len);
2266 }
2267
2268 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2269 struct sk_buff *skb,
2270 struct netlink_callback *cb,
2271 void *data, int len)
2272 {
2273 struct ieee80211_local *local = wiphy_priv(wiphy);
2274
2275 if (!local->ops->testmode_dump)
2276 return -EOPNOTSUPP;
2277
2278 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2279 }
2280 #endif
2281
2282 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2283 enum ieee80211_smps_mode smps_mode)
2284 {
2285 const u8 *ap;
2286 enum ieee80211_smps_mode old_req;
2287 int err;
2288
2289 lockdep_assert_held(&sdata->u.mgd.mtx);
2290
2291 old_req = sdata->u.mgd.req_smps;
2292 sdata->u.mgd.req_smps = smps_mode;
2293
2294 if (old_req == smps_mode &&
2295 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2296 return 0;
2297
2298 /*
2299 * If not associated, or current association is not an HT
2300 * association, there's no need to do anything, just store
2301 * the new value until we associate.
2302 */
2303 if (!sdata->u.mgd.associated ||
2304 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2305 return 0;
2306
2307 ap = sdata->u.mgd.associated->bssid;
2308
2309 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2310 if (sdata->u.mgd.powersave)
2311 smps_mode = IEEE80211_SMPS_DYNAMIC;
2312 else
2313 smps_mode = IEEE80211_SMPS_OFF;
2314 }
2315
2316 /* send SM PS frame to AP */
2317 err = ieee80211_send_smps_action(sdata, smps_mode,
2318 ap, ap);
2319 if (err)
2320 sdata->u.mgd.req_smps = old_req;
2321
2322 return err;
2323 }
2324
2325 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2326 bool enabled, int timeout)
2327 {
2328 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2329 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2330
2331 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2332 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2333 return -EOPNOTSUPP;
2334
2335 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2336 return -EOPNOTSUPP;
2337
2338 if (enabled == sdata->u.mgd.powersave &&
2339 timeout == local->dynamic_ps_forced_timeout)
2340 return 0;
2341
2342 sdata->u.mgd.powersave = enabled;
2343 local->dynamic_ps_forced_timeout = timeout;
2344
2345 /* no change, but if automatic follow powersave */
2346 mutex_lock(&sdata->u.mgd.mtx);
2347 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2348 mutex_unlock(&sdata->u.mgd.mtx);
2349
2350 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2351 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2352
2353 ieee80211_recalc_ps(local, -1);
2354 ieee80211_recalc_ps_vif(sdata);
2355
2356 return 0;
2357 }
2358
2359 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2360 struct net_device *dev,
2361 s32 rssi_thold, u32 rssi_hyst)
2362 {
2363 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2364 struct ieee80211_vif *vif = &sdata->vif;
2365 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2366
2367 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2368 rssi_hyst == bss_conf->cqm_rssi_hyst)
2369 return 0;
2370
2371 bss_conf->cqm_rssi_thold = rssi_thold;
2372 bss_conf->cqm_rssi_hyst = rssi_hyst;
2373
2374 /* tell the driver upon association, unless already associated */
2375 if (sdata->u.mgd.associated &&
2376 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2377 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2378
2379 return 0;
2380 }
2381
2382 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2383 struct net_device *dev,
2384 const u8 *addr,
2385 const struct cfg80211_bitrate_mask *mask)
2386 {
2387 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2388 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2389 int i, ret;
2390
2391 if (!ieee80211_sdata_running(sdata))
2392 return -ENETDOWN;
2393
2394 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2395 ret = drv_set_bitrate_mask(local, sdata, mask);
2396 if (ret)
2397 return ret;
2398 }
2399
2400 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2401 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2402 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2403 sizeof(mask->control[i].mcs));
2404 }
2405
2406 return 0;
2407 }
2408
2409 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2410 struct ieee80211_sub_if_data *sdata,
2411 struct ieee80211_channel *channel,
2412 unsigned int duration, u64 *cookie,
2413 struct sk_buff *txskb,
2414 enum ieee80211_roc_type type)
2415 {
2416 struct ieee80211_roc_work *roc, *tmp;
2417 bool queued = false;
2418 int ret;
2419
2420 lockdep_assert_held(&local->mtx);
2421
2422 if (local->use_chanctx && !local->ops->remain_on_channel)
2423 return -EOPNOTSUPP;
2424
2425 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2426 if (!roc)
2427 return -ENOMEM;
2428
2429 roc->chan = channel;
2430 roc->duration = duration;
2431 roc->req_duration = duration;
2432 roc->frame = txskb;
2433 roc->type = type;
2434 roc->mgmt_tx_cookie = (unsigned long)txskb;
2435 roc->sdata = sdata;
2436 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2437 INIT_LIST_HEAD(&roc->dependents);
2438
2439 /* if there's one pending or we're scanning, queue this one */
2440 if (!list_empty(&local->roc_list) ||
2441 local->scanning || local->radar_detect_enabled)
2442 goto out_check_combine;
2443
2444 /* if not HW assist, just queue & schedule work */
2445 if (!local->ops->remain_on_channel) {
2446 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2447 goto out_queue;
2448 }
2449
2450 /* otherwise actually kick it off here (for error handling) */
2451
2452 /*
2453 * If the duration is zero, then the driver
2454 * wouldn't actually do anything. Set it to
2455 * 10 for now.
2456 *
2457 * TODO: cancel the off-channel operation
2458 * when we get the SKB's TX status and
2459 * the wait time was zero before.
2460 */
2461 if (!duration)
2462 duration = 10;
2463
2464 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2465 if (ret) {
2466 kfree(roc);
2467 return ret;
2468 }
2469
2470 roc->started = true;
2471 goto out_queue;
2472
2473 out_check_combine:
2474 list_for_each_entry(tmp, &local->roc_list, list) {
2475 if (tmp->chan != channel || tmp->sdata != sdata)
2476 continue;
2477
2478 /*
2479 * Extend this ROC if possible:
2480 *
2481 * If it hasn't started yet, just increase the duration
2482 * and add the new one to the list of dependents.
2483 * If the type of the new ROC has higher priority, modify the
2484 * type of the previous one to match that of the new one.
2485 */
2486 if (!tmp->started) {
2487 list_add_tail(&roc->list, &tmp->dependents);
2488 tmp->duration = max(tmp->duration, roc->duration);
2489 tmp->type = max(tmp->type, roc->type);
2490 queued = true;
2491 break;
2492 }
2493
2494 /* If it has already started, it's more difficult ... */
2495 if (local->ops->remain_on_channel) {
2496 unsigned long j = jiffies;
2497
2498 /*
2499 * In the offloaded ROC case, if it hasn't begun, add
2500 * this new one to the dependent list to be handled
2501 * when the master one begins. If it has begun,
2502 * check that there's still a minimum time left and
2503 * if so, start this one, transmitting the frame, but
2504 * add it to the list directly after this one with
2505 * a reduced time so we'll ask the driver to execute
2506 * it right after finishing the previous one, in the
2507 * hope that it'll also be executed right afterwards,
2508 * effectively extending the old one.
2509 * If there's no minimum time left, just add it to the
2510 * normal list.
2511 * TODO: the ROC type is ignored here, assuming that it
2512 * is better to immediately use the current ROC.
2513 */
2514 if (!tmp->hw_begun) {
2515 list_add_tail(&roc->list, &tmp->dependents);
2516 queued = true;
2517 break;
2518 }
2519
2520 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2521 tmp->hw_start_time +
2522 msecs_to_jiffies(tmp->duration))) {
2523 int new_dur;
2524
2525 ieee80211_handle_roc_started(roc);
2526
2527 new_dur = roc->duration -
2528 jiffies_to_msecs(tmp->hw_start_time +
2529 msecs_to_jiffies(
2530 tmp->duration) -
2531 j);
2532
2533 if (new_dur > 0) {
2534 /* add right after tmp */
2535 list_add(&roc->list, &tmp->list);
2536 } else {
2537 list_add_tail(&roc->list,
2538 &tmp->dependents);
2539 }
2540 queued = true;
2541 }
2542 } else if (del_timer_sync(&tmp->work.timer)) {
2543 unsigned long new_end;
2544
2545 /*
2546 * In the software ROC case, cancel the timer, if
2547 * that fails then the finish work is already
2548 * queued/pending and thus we queue the new ROC
2549 * normally, if that succeeds then we can extend
2550 * the timer duration and TX the frame (if any.)
2551 */
2552
2553 list_add_tail(&roc->list, &tmp->dependents);
2554 queued = true;
2555
2556 new_end = jiffies + msecs_to_jiffies(roc->duration);
2557
2558 /* ok, it was started & we canceled timer */
2559 if (time_after(new_end, tmp->work.timer.expires))
2560 mod_timer(&tmp->work.timer, new_end);
2561 else
2562 add_timer(&tmp->work.timer);
2563
2564 ieee80211_handle_roc_started(roc);
2565 }
2566 break;
2567 }
2568
2569 out_queue:
2570 if (!queued)
2571 list_add_tail(&roc->list, &local->roc_list);
2572
2573 /*
2574 * cookie is either the roc cookie (for normal roc)
2575 * or the SKB (for mgmt TX)
2576 */
2577 if (!txskb) {
2578 /* local->mtx protects this */
2579 local->roc_cookie_counter++;
2580 roc->cookie = local->roc_cookie_counter;
2581 /* wow, you wrapped 64 bits ... more likely a bug */
2582 if (WARN_ON(roc->cookie == 0)) {
2583 roc->cookie = 1;
2584 local->roc_cookie_counter++;
2585 }
2586 *cookie = roc->cookie;
2587 } else {
2588 *cookie = (unsigned long)txskb;
2589 }
2590
2591 return 0;
2592 }
2593
2594 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2595 struct wireless_dev *wdev,
2596 struct ieee80211_channel *chan,
2597 unsigned int duration,
2598 u64 *cookie)
2599 {
2600 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2601 struct ieee80211_local *local = sdata->local;
2602 int ret;
2603
2604 mutex_lock(&local->mtx);
2605 ret = ieee80211_start_roc_work(local, sdata, chan,
2606 duration, cookie, NULL,
2607 IEEE80211_ROC_TYPE_NORMAL);
2608 mutex_unlock(&local->mtx);
2609
2610 return ret;
2611 }
2612
2613 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2614 u64 cookie, bool mgmt_tx)
2615 {
2616 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2617 int ret;
2618
2619 mutex_lock(&local->mtx);
2620 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2621 struct ieee80211_roc_work *dep, *tmp2;
2622
2623 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2624 if (!mgmt_tx && dep->cookie != cookie)
2625 continue;
2626 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2627 continue;
2628 /* found dependent item -- just remove it */
2629 list_del(&dep->list);
2630 mutex_unlock(&local->mtx);
2631
2632 ieee80211_roc_notify_destroy(dep);
2633 return 0;
2634 }
2635
2636 if (!mgmt_tx && roc->cookie != cookie)
2637 continue;
2638 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2639 continue;
2640
2641 found = roc;
2642 break;
2643 }
2644
2645 if (!found) {
2646 mutex_unlock(&local->mtx);
2647 return -ENOENT;
2648 }
2649
2650 /*
2651 * We found the item to cancel, so do that. Note that it
2652 * may have dependents, which we also cancel (and send
2653 * the expired signal for.) Not doing so would be quite
2654 * tricky here, but we may need to fix it later.
2655 */
2656
2657 if (local->ops->remain_on_channel) {
2658 if (found->started) {
2659 ret = drv_cancel_remain_on_channel(local);
2660 if (WARN_ON_ONCE(ret)) {
2661 mutex_unlock(&local->mtx);
2662 return ret;
2663 }
2664 }
2665
2666 list_del(&found->list);
2667
2668 if (found->started)
2669 ieee80211_start_next_roc(local);
2670 mutex_unlock(&local->mtx);
2671
2672 ieee80211_roc_notify_destroy(found);
2673 } else {
2674 /* work may be pending so use it all the time */
2675 found->abort = true;
2676 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2677
2678 mutex_unlock(&local->mtx);
2679
2680 /* work will clean up etc */
2681 flush_delayed_work(&found->work);
2682 }
2683
2684 return 0;
2685 }
2686
2687 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2688 struct wireless_dev *wdev,
2689 u64 cookie)
2690 {
2691 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2692 struct ieee80211_local *local = sdata->local;
2693
2694 return ieee80211_cancel_roc(local, cookie, false);
2695 }
2696
2697 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2698 struct net_device *dev,
2699 struct cfg80211_chan_def *chandef)
2700 {
2701 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2702 struct ieee80211_local *local = sdata->local;
2703 unsigned long timeout;
2704 int err;
2705
2706 if (!list_empty(&local->roc_list) || local->scanning)
2707 return -EBUSY;
2708
2709 /* whatever, but channel contexts should not complain about that one */
2710 sdata->smps_mode = IEEE80211_SMPS_OFF;
2711 sdata->needed_rx_chains = local->rx_chains;
2712 sdata->radar_required = true;
2713
2714 mutex_lock(&local->iflist_mtx);
2715 err = ieee80211_vif_use_channel(sdata, chandef,
2716 IEEE80211_CHANCTX_SHARED);
2717 mutex_unlock(&local->iflist_mtx);
2718 if (err)
2719 return err;
2720
2721 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2722 ieee80211_queue_delayed_work(&sdata->local->hw,
2723 &sdata->dfs_cac_timer_work, timeout);
2724
2725 return 0;
2726 }
2727
2728 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2729 struct ieee80211_channel *chan, bool offchan,
2730 unsigned int wait, const u8 *buf, size_t len,
2731 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2732 {
2733 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2734 struct ieee80211_local *local = sdata->local;
2735 struct sk_buff *skb;
2736 struct sta_info *sta;
2737 const struct ieee80211_mgmt *mgmt = (void *)buf;
2738 bool need_offchan = false;
2739 u32 flags;
2740 int ret;
2741
2742 if (dont_wait_for_ack)
2743 flags = IEEE80211_TX_CTL_NO_ACK;
2744 else
2745 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2746 IEEE80211_TX_CTL_REQ_TX_STATUS;
2747
2748 if (no_cck)
2749 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2750
2751 switch (sdata->vif.type) {
2752 case NL80211_IFTYPE_ADHOC:
2753 if (!sdata->vif.bss_conf.ibss_joined)
2754 need_offchan = true;
2755 /* fall through */
2756 #ifdef CONFIG_MAC80211_MESH
2757 case NL80211_IFTYPE_MESH_POINT:
2758 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2759 !sdata->u.mesh.mesh_id_len)
2760 need_offchan = true;
2761 /* fall through */
2762 #endif
2763 case NL80211_IFTYPE_AP:
2764 case NL80211_IFTYPE_AP_VLAN:
2765 case NL80211_IFTYPE_P2P_GO:
2766 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2767 !ieee80211_vif_is_mesh(&sdata->vif) &&
2768 !rcu_access_pointer(sdata->bss->beacon))
2769 need_offchan = true;
2770 if (!ieee80211_is_action(mgmt->frame_control) ||
2771 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2772 break;
2773 rcu_read_lock();
2774 sta = sta_info_get(sdata, mgmt->da);
2775 rcu_read_unlock();
2776 if (!sta)
2777 return -ENOLINK;
2778 break;
2779 case NL80211_IFTYPE_STATION:
2780 case NL80211_IFTYPE_P2P_CLIENT:
2781 if (!sdata->u.mgd.associated)
2782 need_offchan = true;
2783 break;
2784 case NL80211_IFTYPE_P2P_DEVICE:
2785 need_offchan = true;
2786 break;
2787 default:
2788 return -EOPNOTSUPP;
2789 }
2790
2791 mutex_lock(&local->mtx);
2792
2793 /* Check if the operating channel is the requested channel */
2794 if (!need_offchan) {
2795 struct ieee80211_chanctx_conf *chanctx_conf;
2796
2797 rcu_read_lock();
2798 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2799
2800 if (chanctx_conf)
2801 need_offchan = chan != chanctx_conf->def.chan;
2802 else
2803 need_offchan = true;
2804 rcu_read_unlock();
2805 }
2806
2807 if (need_offchan && !offchan) {
2808 ret = -EBUSY;
2809 goto out_unlock;
2810 }
2811
2812 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2813 if (!skb) {
2814 ret = -ENOMEM;
2815 goto out_unlock;
2816 }
2817 skb_reserve(skb, local->hw.extra_tx_headroom);
2818
2819 memcpy(skb_put(skb, len), buf, len);
2820
2821 IEEE80211_SKB_CB(skb)->flags = flags;
2822
2823 skb->dev = sdata->dev;
2824
2825 if (!need_offchan) {
2826 *cookie = (unsigned long) skb;
2827 ieee80211_tx_skb(sdata, skb);
2828 ret = 0;
2829 goto out_unlock;
2830 }
2831
2832 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2833 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2834 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2835 IEEE80211_SKB_CB(skb)->hw_queue =
2836 local->hw.offchannel_tx_hw_queue;
2837
2838 /* This will handle all kinds of coalescing and immediate TX */
2839 ret = ieee80211_start_roc_work(local, sdata, chan,
2840 wait, cookie, skb,
2841 IEEE80211_ROC_TYPE_MGMT_TX);
2842 if (ret)
2843 kfree_skb(skb);
2844 out_unlock:
2845 mutex_unlock(&local->mtx);
2846 return ret;
2847 }
2848
2849 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2850 struct wireless_dev *wdev,
2851 u64 cookie)
2852 {
2853 struct ieee80211_local *local = wiphy_priv(wiphy);
2854
2855 return ieee80211_cancel_roc(local, cookie, true);
2856 }
2857
2858 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2859 struct wireless_dev *wdev,
2860 u16 frame_type, bool reg)
2861 {
2862 struct ieee80211_local *local = wiphy_priv(wiphy);
2863 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2864
2865 switch (frame_type) {
2866 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2867 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2868 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2869
2870 if (reg)
2871 ifibss->auth_frame_registrations++;
2872 else
2873 ifibss->auth_frame_registrations--;
2874 }
2875 break;
2876 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2877 if (reg)
2878 local->probe_req_reg++;
2879 else
2880 local->probe_req_reg--;
2881
2882 if (!local->open_count)
2883 break;
2884
2885 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2886 break;
2887 default:
2888 break;
2889 }
2890 }
2891
2892 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2893 {
2894 struct ieee80211_local *local = wiphy_priv(wiphy);
2895
2896 if (local->started)
2897 return -EOPNOTSUPP;
2898
2899 return drv_set_antenna(local, tx_ant, rx_ant);
2900 }
2901
2902 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2903 {
2904 struct ieee80211_local *local = wiphy_priv(wiphy);
2905
2906 return drv_get_antenna(local, tx_ant, rx_ant);
2907 }
2908
2909 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2910 {
2911 struct ieee80211_local *local = wiphy_priv(wiphy);
2912
2913 return drv_set_ringparam(local, tx, rx);
2914 }
2915
2916 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2917 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2918 {
2919 struct ieee80211_local *local = wiphy_priv(wiphy);
2920
2921 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2922 }
2923
2924 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2925 struct net_device *dev,
2926 struct cfg80211_gtk_rekey_data *data)
2927 {
2928 struct ieee80211_local *local = wiphy_priv(wiphy);
2929 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2930
2931 if (!local->ops->set_rekey_data)
2932 return -EOPNOTSUPP;
2933
2934 drv_set_rekey_data(local, sdata, data);
2935
2936 return 0;
2937 }
2938
2939 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2940 {
2941 u8 *pos = (void *)skb_put(skb, 7);
2942
2943 *pos++ = WLAN_EID_EXT_CAPABILITY;
2944 *pos++ = 5; /* len */
2945 *pos++ = 0x0;
2946 *pos++ = 0x0;
2947 *pos++ = 0x0;
2948 *pos++ = 0x0;
2949 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2950 }
2951
2952 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2953 {
2954 struct ieee80211_local *local = sdata->local;
2955 u16 capab;
2956
2957 capab = 0;
2958 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2959 return capab;
2960
2961 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2962 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2963 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2964 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2965
2966 return capab;
2967 }
2968
2969 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2970 u8 *peer, u8 *bssid)
2971 {
2972 struct ieee80211_tdls_lnkie *lnkid;
2973
2974 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2975
2976 lnkid->ie_type = WLAN_EID_LINK_ID;
2977 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2978
2979 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2980 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2981 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2982 }
2983
2984 static int
2985 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2986 u8 *peer, u8 action_code, u8 dialog_token,
2987 u16 status_code, struct sk_buff *skb)
2988 {
2989 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2990 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2991 struct ieee80211_tdls_data *tf;
2992
2993 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2994
2995 memcpy(tf->da, peer, ETH_ALEN);
2996 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2997 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2998 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2999
3000 switch (action_code) {
3001 case WLAN_TDLS_SETUP_REQUEST:
3002 tf->category = WLAN_CATEGORY_TDLS;
3003 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3004
3005 skb_put(skb, sizeof(tf->u.setup_req));
3006 tf->u.setup_req.dialog_token = dialog_token;
3007 tf->u.setup_req.capability =
3008 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3009
3010 ieee80211_add_srates_ie(sdata, skb, false, band);
3011 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3012 ieee80211_tdls_add_ext_capab(skb);
3013 break;
3014 case WLAN_TDLS_SETUP_RESPONSE:
3015 tf->category = WLAN_CATEGORY_TDLS;
3016 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3017
3018 skb_put(skb, sizeof(tf->u.setup_resp));
3019 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3020 tf->u.setup_resp.dialog_token = dialog_token;
3021 tf->u.setup_resp.capability =
3022 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3023
3024 ieee80211_add_srates_ie(sdata, skb, false, band);
3025 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3026 ieee80211_tdls_add_ext_capab(skb);
3027 break;
3028 case WLAN_TDLS_SETUP_CONFIRM:
3029 tf->category = WLAN_CATEGORY_TDLS;
3030 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3031
3032 skb_put(skb, sizeof(tf->u.setup_cfm));
3033 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3034 tf->u.setup_cfm.dialog_token = dialog_token;
3035 break;
3036 case WLAN_TDLS_TEARDOWN:
3037 tf->category = WLAN_CATEGORY_TDLS;
3038 tf->action_code = WLAN_TDLS_TEARDOWN;
3039
3040 skb_put(skb, sizeof(tf->u.teardown));
3041 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3042 break;
3043 case WLAN_TDLS_DISCOVERY_REQUEST:
3044 tf->category = WLAN_CATEGORY_TDLS;
3045 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3046
3047 skb_put(skb, sizeof(tf->u.discover_req));
3048 tf->u.discover_req.dialog_token = dialog_token;
3049 break;
3050 default:
3051 return -EINVAL;
3052 }
3053
3054 return 0;
3055 }
3056
3057 static int
3058 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3059 u8 *peer, u8 action_code, u8 dialog_token,
3060 u16 status_code, struct sk_buff *skb)
3061 {
3062 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3063 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3064 struct ieee80211_mgmt *mgmt;
3065
3066 mgmt = (void *)skb_put(skb, 24);
3067 memset(mgmt, 0, 24);
3068 memcpy(mgmt->da, peer, ETH_ALEN);
3069 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3070 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3071
3072 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3073 IEEE80211_STYPE_ACTION);
3074
3075 switch (action_code) {
3076 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3077 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3078 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3079 mgmt->u.action.u.tdls_discover_resp.action_code =
3080 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3081 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3082 dialog_token;
3083 mgmt->u.action.u.tdls_discover_resp.capability =
3084 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3085
3086 ieee80211_add_srates_ie(sdata, skb, false, band);
3087 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3088 ieee80211_tdls_add_ext_capab(skb);
3089 break;
3090 default:
3091 return -EINVAL;
3092 }
3093
3094 return 0;
3095 }
3096
3097 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3098 u8 *peer, u8 action_code, u8 dialog_token,
3099 u16 status_code, const u8 *extra_ies,
3100 size_t extra_ies_len)
3101 {
3102 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3103 struct ieee80211_local *local = sdata->local;
3104 struct sk_buff *skb = NULL;
3105 bool send_direct;
3106 int ret;
3107
3108 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3109 return -ENOTSUPP;
3110
3111 /* make sure we are in managed mode, and associated */
3112 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3113 !sdata->u.mgd.associated)
3114 return -EINVAL;
3115
3116 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3117 action_code, peer);
3118
3119 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3120 max(sizeof(struct ieee80211_mgmt),
3121 sizeof(struct ieee80211_tdls_data)) +
3122 50 + /* supported rates */
3123 7 + /* ext capab */
3124 extra_ies_len +
3125 sizeof(struct ieee80211_tdls_lnkie));
3126 if (!skb)
3127 return -ENOMEM;
3128
3129 skb_reserve(skb, local->hw.extra_tx_headroom);
3130
3131 switch (action_code) {
3132 case WLAN_TDLS_SETUP_REQUEST:
3133 case WLAN_TDLS_SETUP_RESPONSE:
3134 case WLAN_TDLS_SETUP_CONFIRM:
3135 case WLAN_TDLS_TEARDOWN:
3136 case WLAN_TDLS_DISCOVERY_REQUEST:
3137 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3138 action_code, dialog_token,
3139 status_code, skb);
3140 send_direct = false;
3141 break;
3142 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3143 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3144 dialog_token, status_code,
3145 skb);
3146 send_direct = true;
3147 break;
3148 default:
3149 ret = -ENOTSUPP;
3150 break;
3151 }
3152
3153 if (ret < 0)
3154 goto fail;
3155
3156 if (extra_ies_len)
3157 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3158
3159 /* the TDLS link IE is always added last */
3160 switch (action_code) {
3161 case WLAN_TDLS_SETUP_REQUEST:
3162 case WLAN_TDLS_SETUP_CONFIRM:
3163 case WLAN_TDLS_TEARDOWN:
3164 case WLAN_TDLS_DISCOVERY_REQUEST:
3165 /* we are the initiator */
3166 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3167 sdata->u.mgd.bssid);
3168 break;
3169 case WLAN_TDLS_SETUP_RESPONSE:
3170 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3171 /* we are the responder */
3172 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3173 sdata->u.mgd.bssid);
3174 break;
3175 default:
3176 ret = -ENOTSUPP;
3177 goto fail;
3178 }
3179
3180 if (send_direct) {
3181 ieee80211_tx_skb(sdata, skb);
3182 return 0;
3183 }
3184
3185 /*
3186 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3187 * we should default to AC_VI.
3188 */
3189 switch (action_code) {
3190 case WLAN_TDLS_SETUP_REQUEST:
3191 case WLAN_TDLS_SETUP_RESPONSE:
3192 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3193 skb->priority = 2;
3194 break;
3195 default:
3196 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3197 skb->priority = 5;
3198 break;
3199 }
3200
3201 /* disable bottom halves when entering the Tx path */
3202 local_bh_disable();
3203 ret = ieee80211_subif_start_xmit(skb, dev);
3204 local_bh_enable();
3205
3206 return ret;
3207
3208 fail:
3209 dev_kfree_skb(skb);
3210 return ret;
3211 }
3212
3213 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3214 u8 *peer, enum nl80211_tdls_operation oper)
3215 {
3216 struct sta_info *sta;
3217 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3218
3219 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3220 return -ENOTSUPP;
3221
3222 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3223 return -EINVAL;
3224
3225 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3226
3227 switch (oper) {
3228 case NL80211_TDLS_ENABLE_LINK:
3229 rcu_read_lock();
3230 sta = sta_info_get(sdata, peer);
3231 if (!sta) {
3232 rcu_read_unlock();
3233 return -ENOLINK;
3234 }
3235
3236 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3237 rcu_read_unlock();
3238 break;
3239 case NL80211_TDLS_DISABLE_LINK:
3240 return sta_info_destroy_addr(sdata, peer);
3241 case NL80211_TDLS_TEARDOWN:
3242 case NL80211_TDLS_SETUP:
3243 case NL80211_TDLS_DISCOVERY_REQ:
3244 /* We don't support in-driver setup/teardown/discovery */
3245 return -ENOTSUPP;
3246 default:
3247 return -ENOTSUPP;
3248 }
3249
3250 return 0;
3251 }
3252
3253 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3254 const u8 *peer, u64 *cookie)
3255 {
3256 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3257 struct ieee80211_local *local = sdata->local;
3258 struct ieee80211_qos_hdr *nullfunc;
3259 struct sk_buff *skb;
3260 int size = sizeof(*nullfunc);
3261 __le16 fc;
3262 bool qos;
3263 struct ieee80211_tx_info *info;
3264 struct sta_info *sta;
3265 struct ieee80211_chanctx_conf *chanctx_conf;
3266 enum ieee80211_band band;
3267
3268 rcu_read_lock();
3269 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3270 if (WARN_ON(!chanctx_conf)) {
3271 rcu_read_unlock();
3272 return -EINVAL;
3273 }
3274 band = chanctx_conf->def.chan->band;
3275 sta = sta_info_get(sdata, peer);
3276 if (sta) {
3277 qos = test_sta_flag(sta, WLAN_STA_WME);
3278 } else {
3279 rcu_read_unlock();
3280 return -ENOLINK;
3281 }
3282
3283 if (qos) {
3284 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3285 IEEE80211_STYPE_QOS_NULLFUNC |
3286 IEEE80211_FCTL_FROMDS);
3287 } else {
3288 size -= 2;
3289 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3290 IEEE80211_STYPE_NULLFUNC |
3291 IEEE80211_FCTL_FROMDS);
3292 }
3293
3294 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3295 if (!skb) {
3296 rcu_read_unlock();
3297 return -ENOMEM;
3298 }
3299
3300 skb->dev = dev;
3301
3302 skb_reserve(skb, local->hw.extra_tx_headroom);
3303
3304 nullfunc = (void *) skb_put(skb, size);
3305 nullfunc->frame_control = fc;
3306 nullfunc->duration_id = 0;
3307 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3308 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3309 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3310 nullfunc->seq_ctrl = 0;
3311
3312 info = IEEE80211_SKB_CB(skb);
3313
3314 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3315 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3316
3317 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3318 skb->priority = 7;
3319 if (qos)
3320 nullfunc->qos_ctrl = cpu_to_le16(7);
3321
3322 local_bh_disable();
3323 ieee80211_xmit(sdata, skb, band);
3324 local_bh_enable();
3325 rcu_read_unlock();
3326
3327 *cookie = (unsigned long) skb;
3328 return 0;
3329 }
3330
3331 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3332 struct wireless_dev *wdev,
3333 struct cfg80211_chan_def *chandef)
3334 {
3335 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3336 struct ieee80211_local *local = wiphy_priv(wiphy);
3337 struct ieee80211_chanctx_conf *chanctx_conf;
3338 int ret = -ENODATA;
3339
3340 rcu_read_lock();
3341 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3342 if (chanctx_conf) {
3343 *chandef = chanctx_conf->def;
3344 ret = 0;
3345 } else if (local->open_count > 0 &&
3346 local->open_count == local->monitors &&
3347 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3348 if (local->use_chanctx)
3349 *chandef = local->monitor_chandef;
3350 else
3351 cfg80211_chandef_create(chandef,
3352 local->_oper_channel,
3353 local->_oper_channel_type);
3354 ret = 0;
3355 }
3356 rcu_read_unlock();
3357
3358 return ret;
3359 }
3360
3361 #ifdef CONFIG_PM
3362 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3363 {
3364 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3365 }
3366 #endif
3367
3368 struct cfg80211_ops mac80211_config_ops = {
3369 .add_virtual_intf = ieee80211_add_iface,
3370 .del_virtual_intf = ieee80211_del_iface,
3371 .change_virtual_intf = ieee80211_change_iface,
3372 .start_p2p_device = ieee80211_start_p2p_device,
3373 .stop_p2p_device = ieee80211_stop_p2p_device,
3374 .add_key = ieee80211_add_key,
3375 .del_key = ieee80211_del_key,
3376 .get_key = ieee80211_get_key,
3377 .set_default_key = ieee80211_config_default_key,
3378 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3379 .start_ap = ieee80211_start_ap,
3380 .change_beacon = ieee80211_change_beacon,
3381 .stop_ap = ieee80211_stop_ap,
3382 .add_station = ieee80211_add_station,
3383 .del_station = ieee80211_del_station,
3384 .change_station = ieee80211_change_station,
3385 .get_station = ieee80211_get_station,
3386 .dump_station = ieee80211_dump_station,
3387 .dump_survey = ieee80211_dump_survey,
3388 #ifdef CONFIG_MAC80211_MESH
3389 .add_mpath = ieee80211_add_mpath,
3390 .del_mpath = ieee80211_del_mpath,
3391 .change_mpath = ieee80211_change_mpath,
3392 .get_mpath = ieee80211_get_mpath,
3393 .dump_mpath = ieee80211_dump_mpath,
3394 .update_mesh_config = ieee80211_update_mesh_config,
3395 .get_mesh_config = ieee80211_get_mesh_config,
3396 .join_mesh = ieee80211_join_mesh,
3397 .leave_mesh = ieee80211_leave_mesh,
3398 #endif
3399 .change_bss = ieee80211_change_bss,
3400 .set_txq_params = ieee80211_set_txq_params,
3401 .set_monitor_channel = ieee80211_set_monitor_channel,
3402 .suspend = ieee80211_suspend,
3403 .resume = ieee80211_resume,
3404 .scan = ieee80211_scan,
3405 .sched_scan_start = ieee80211_sched_scan_start,
3406 .sched_scan_stop = ieee80211_sched_scan_stop,
3407 .auth = ieee80211_auth,
3408 .assoc = ieee80211_assoc,
3409 .deauth = ieee80211_deauth,
3410 .disassoc = ieee80211_disassoc,
3411 .join_ibss = ieee80211_join_ibss,
3412 .leave_ibss = ieee80211_leave_ibss,
3413 .set_mcast_rate = ieee80211_set_mcast_rate,
3414 .set_wiphy_params = ieee80211_set_wiphy_params,
3415 .set_tx_power = ieee80211_set_tx_power,
3416 .get_tx_power = ieee80211_get_tx_power,
3417 .set_wds_peer = ieee80211_set_wds_peer,
3418 .rfkill_poll = ieee80211_rfkill_poll,
3419 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3420 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3421 .set_power_mgmt = ieee80211_set_power_mgmt,
3422 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3423 .remain_on_channel = ieee80211_remain_on_channel,
3424 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3425 .mgmt_tx = ieee80211_mgmt_tx,
3426 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3427 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3428 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3429 .set_antenna = ieee80211_set_antenna,
3430 .get_antenna = ieee80211_get_antenna,
3431 .set_ringparam = ieee80211_set_ringparam,
3432 .get_ringparam = ieee80211_get_ringparam,
3433 .set_rekey_data = ieee80211_set_rekey_data,
3434 .tdls_oper = ieee80211_tdls_oper,
3435 .tdls_mgmt = ieee80211_tdls_mgmt,
3436 .probe_client = ieee80211_probe_client,
3437 .set_noack_map = ieee80211_set_noack_map,
3438 #ifdef CONFIG_PM
3439 .set_wakeup = ieee80211_set_wakeup,
3440 #endif
3441 .get_et_sset_count = ieee80211_get_et_sset_count,
3442 .get_et_stats = ieee80211_get_et_stats,
3443 .get_et_strings = ieee80211_get_et_strings,
3444 .get_channel = ieee80211_cfg_get_channel,
3445 .start_radar_detection = ieee80211_start_radar_detection,
3446 };
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