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Merge branch 'acpi-pci-hotplug'
[mirror_ubuntu-artful-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 u32 mask = MONITOR_FLAG_COOK_FRAMES |
77 MONITOR_FLAG_ACTIVE;
78
79 /*
80 * Prohibit MONITOR_FLAG_COOK_FRAMES and
81 * MONITOR_FLAG_ACTIVE to be changed while the
82 * interface is up.
83 * Else we would need to add a lot of cruft
84 * to update everything:
85 * cooked_mntrs, monitor and all fif_* counters
86 * reconfigure hardware
87 */
88 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
89 return -EBUSY;
90
91 ieee80211_adjust_monitor_flags(sdata, -1);
92 sdata->u.mntr_flags = *flags;
93 ieee80211_adjust_monitor_flags(sdata, 1);
94
95 ieee80211_configure_filter(local);
96 } else {
97 /*
98 * Because the interface is down, ieee80211_do_stop
99 * and ieee80211_do_open take care of "everything"
100 * mentioned in the comment above.
101 */
102 sdata->u.mntr_flags = *flags;
103 }
104 }
105
106 return 0;
107 }
108
109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
110 struct wireless_dev *wdev)
111 {
112 return ieee80211_do_open(wdev, true);
113 }
114
115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
116 struct wireless_dev *wdev)
117 {
118 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
119 }
120
121 static int ieee80211_set_noack_map(struct wiphy *wiphy,
122 struct net_device *dev,
123 u16 noack_map)
124 {
125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
126
127 sdata->noack_map = noack_map;
128 return 0;
129 }
130
131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
132 u8 key_idx, bool pairwise, const u8 *mac_addr,
133 struct key_params *params)
134 {
135 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
136 struct sta_info *sta = NULL;
137 struct ieee80211_key *key;
138 int err;
139
140 if (!ieee80211_sdata_running(sdata))
141 return -ENETDOWN;
142
143 /* reject WEP and TKIP keys if WEP failed to initialize */
144 switch (params->cipher) {
145 case WLAN_CIPHER_SUITE_WEP40:
146 case WLAN_CIPHER_SUITE_TKIP:
147 case WLAN_CIPHER_SUITE_WEP104:
148 if (IS_ERR(sdata->local->wep_tx_tfm))
149 return -EINVAL;
150 break;
151 default:
152 break;
153 }
154
155 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
156 params->key, params->seq_len, params->seq);
157 if (IS_ERR(key))
158 return PTR_ERR(key);
159
160 if (pairwise)
161 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
162
163 mutex_lock(&sdata->local->sta_mtx);
164
165 if (mac_addr) {
166 if (ieee80211_vif_is_mesh(&sdata->vif))
167 sta = sta_info_get(sdata, mac_addr);
168 else
169 sta = sta_info_get_bss(sdata, mac_addr);
170 /*
171 * The ASSOC test makes sure the driver is ready to
172 * receive the key. When wpa_supplicant has roamed
173 * using FT, it attempts to set the key before
174 * association has completed, this rejects that attempt
175 * so it will set the key again after assocation.
176 *
177 * TODO: accept the key if we have a station entry and
178 * add it to the device after the station.
179 */
180 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
181 ieee80211_key_free_unused(key);
182 err = -ENOENT;
183 goto out_unlock;
184 }
185 }
186
187 switch (sdata->vif.type) {
188 case NL80211_IFTYPE_STATION:
189 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
190 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
191 break;
192 case NL80211_IFTYPE_AP:
193 case NL80211_IFTYPE_AP_VLAN:
194 /* Keys without a station are used for TX only */
195 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
196 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
197 break;
198 case NL80211_IFTYPE_ADHOC:
199 /* no MFP (yet) */
200 break;
201 case NL80211_IFTYPE_MESH_POINT:
202 #ifdef CONFIG_MAC80211_MESH
203 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
204 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
205 break;
206 #endif
207 case NL80211_IFTYPE_WDS:
208 case NL80211_IFTYPE_MONITOR:
209 case NL80211_IFTYPE_P2P_DEVICE:
210 case NL80211_IFTYPE_UNSPECIFIED:
211 case NUM_NL80211_IFTYPES:
212 case NL80211_IFTYPE_P2P_CLIENT:
213 case NL80211_IFTYPE_P2P_GO:
214 /* shouldn't happen */
215 WARN_ON_ONCE(1);
216 break;
217 }
218
219 err = ieee80211_key_link(key, sdata, sta);
220
221 out_unlock:
222 mutex_unlock(&sdata->local->sta_mtx);
223
224 return err;
225 }
226
227 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
228 u8 key_idx, bool pairwise, const u8 *mac_addr)
229 {
230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
231 struct ieee80211_local *local = sdata->local;
232 struct sta_info *sta;
233 struct ieee80211_key *key = NULL;
234 int ret;
235
236 mutex_lock(&local->sta_mtx);
237 mutex_lock(&local->key_mtx);
238
239 if (mac_addr) {
240 ret = -ENOENT;
241
242 sta = sta_info_get_bss(sdata, mac_addr);
243 if (!sta)
244 goto out_unlock;
245
246 if (pairwise)
247 key = key_mtx_dereference(local, sta->ptk);
248 else
249 key = key_mtx_dereference(local, sta->gtk[key_idx]);
250 } else
251 key = key_mtx_dereference(local, sdata->keys[key_idx]);
252
253 if (!key) {
254 ret = -ENOENT;
255 goto out_unlock;
256 }
257
258 ieee80211_key_free(key, true);
259
260 ret = 0;
261 out_unlock:
262 mutex_unlock(&local->key_mtx);
263 mutex_unlock(&local->sta_mtx);
264
265 return ret;
266 }
267
268 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
269 u8 key_idx, bool pairwise, const u8 *mac_addr,
270 void *cookie,
271 void (*callback)(void *cookie,
272 struct key_params *params))
273 {
274 struct ieee80211_sub_if_data *sdata;
275 struct sta_info *sta = NULL;
276 u8 seq[6] = {0};
277 struct key_params params;
278 struct ieee80211_key *key = NULL;
279 u64 pn64;
280 u32 iv32;
281 u16 iv16;
282 int err = -ENOENT;
283
284 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
285
286 rcu_read_lock();
287
288 if (mac_addr) {
289 sta = sta_info_get_bss(sdata, mac_addr);
290 if (!sta)
291 goto out;
292
293 if (pairwise)
294 key = rcu_dereference(sta->ptk);
295 else if (key_idx < NUM_DEFAULT_KEYS)
296 key = rcu_dereference(sta->gtk[key_idx]);
297 } else
298 key = rcu_dereference(sdata->keys[key_idx]);
299
300 if (!key)
301 goto out;
302
303 memset(&params, 0, sizeof(params));
304
305 params.cipher = key->conf.cipher;
306
307 switch (key->conf.cipher) {
308 case WLAN_CIPHER_SUITE_TKIP:
309 iv32 = key->u.tkip.tx.iv32;
310 iv16 = key->u.tkip.tx.iv16;
311
312 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
313 drv_get_tkip_seq(sdata->local,
314 key->conf.hw_key_idx,
315 &iv32, &iv16);
316
317 seq[0] = iv16 & 0xff;
318 seq[1] = (iv16 >> 8) & 0xff;
319 seq[2] = iv32 & 0xff;
320 seq[3] = (iv32 >> 8) & 0xff;
321 seq[4] = (iv32 >> 16) & 0xff;
322 seq[5] = (iv32 >> 24) & 0xff;
323 params.seq = seq;
324 params.seq_len = 6;
325 break;
326 case WLAN_CIPHER_SUITE_CCMP:
327 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
328 seq[0] = pn64;
329 seq[1] = pn64 >> 8;
330 seq[2] = pn64 >> 16;
331 seq[3] = pn64 >> 24;
332 seq[4] = pn64 >> 32;
333 seq[5] = pn64 >> 40;
334 params.seq = seq;
335 params.seq_len = 6;
336 break;
337 case WLAN_CIPHER_SUITE_AES_CMAC:
338 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
339 seq[0] = pn64;
340 seq[1] = pn64 >> 8;
341 seq[2] = pn64 >> 16;
342 seq[3] = pn64 >> 24;
343 seq[4] = pn64 >> 32;
344 seq[5] = pn64 >> 40;
345 params.seq = seq;
346 params.seq_len = 6;
347 break;
348 }
349
350 params.key = key->conf.key;
351 params.key_len = key->conf.keylen;
352
353 callback(cookie, &params);
354 err = 0;
355
356 out:
357 rcu_read_unlock();
358 return err;
359 }
360
361 static int ieee80211_config_default_key(struct wiphy *wiphy,
362 struct net_device *dev,
363 u8 key_idx, bool uni,
364 bool multi)
365 {
366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
367
368 ieee80211_set_default_key(sdata, key_idx, uni, multi);
369
370 return 0;
371 }
372
373 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
374 struct net_device *dev,
375 u8 key_idx)
376 {
377 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
378
379 ieee80211_set_default_mgmt_key(sdata, key_idx);
380
381 return 0;
382 }
383
384 void sta_set_rate_info_tx(struct sta_info *sta,
385 const struct ieee80211_tx_rate *rate,
386 struct rate_info *rinfo)
387 {
388 rinfo->flags = 0;
389 if (rate->flags & IEEE80211_TX_RC_MCS) {
390 rinfo->flags |= RATE_INFO_FLAGS_MCS;
391 rinfo->mcs = rate->idx;
392 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
393 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
394 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
395 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
396 } else {
397 struct ieee80211_supported_band *sband;
398 sband = sta->local->hw.wiphy->bands[
399 ieee80211_get_sdata_band(sta->sdata)];
400 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
401 }
402 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
403 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
404 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
405 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
406 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
407 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
408 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
409 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
410 }
411
412 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
413 {
414 rinfo->flags = 0;
415
416 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
417 rinfo->flags |= RATE_INFO_FLAGS_MCS;
418 rinfo->mcs = sta->last_rx_rate_idx;
419 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
420 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
421 rinfo->nss = sta->last_rx_rate_vht_nss;
422 rinfo->mcs = sta->last_rx_rate_idx;
423 } else {
424 struct ieee80211_supported_band *sband;
425
426 sband = sta->local->hw.wiphy->bands[
427 ieee80211_get_sdata_band(sta->sdata)];
428 rinfo->legacy =
429 sband->bitrates[sta->last_rx_rate_idx].bitrate;
430 }
431
432 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
433 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
434 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
435 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
436 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
437 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
438 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
439 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
440 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
441 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
442 }
443
444 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
445 {
446 struct ieee80211_sub_if_data *sdata = sta->sdata;
447 struct ieee80211_local *local = sdata->local;
448 struct timespec uptime;
449 u64 packets = 0;
450 int i, ac;
451
452 sinfo->generation = sdata->local->sta_generation;
453
454 sinfo->filled = STATION_INFO_INACTIVE_TIME |
455 STATION_INFO_RX_BYTES64 |
456 STATION_INFO_TX_BYTES64 |
457 STATION_INFO_RX_PACKETS |
458 STATION_INFO_TX_PACKETS |
459 STATION_INFO_TX_RETRIES |
460 STATION_INFO_TX_FAILED |
461 STATION_INFO_TX_BITRATE |
462 STATION_INFO_RX_BITRATE |
463 STATION_INFO_RX_DROP_MISC |
464 STATION_INFO_BSS_PARAM |
465 STATION_INFO_CONNECTED_TIME |
466 STATION_INFO_STA_FLAGS |
467 STATION_INFO_BEACON_LOSS_COUNT;
468
469 do_posix_clock_monotonic_gettime(&uptime);
470 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
471
472 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
473 sinfo->tx_bytes = 0;
474 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
475 sinfo->tx_bytes += sta->tx_bytes[ac];
476 packets += sta->tx_packets[ac];
477 }
478 sinfo->tx_packets = packets;
479 sinfo->rx_bytes = sta->rx_bytes;
480 sinfo->rx_packets = sta->rx_packets;
481 sinfo->tx_retries = sta->tx_retry_count;
482 sinfo->tx_failed = sta->tx_retry_failed;
483 sinfo->rx_dropped_misc = sta->rx_dropped;
484 sinfo->beacon_loss_count = sta->beacon_loss_count;
485
486 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
487 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
488 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
489 if (!local->ops->get_rssi ||
490 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
491 sinfo->signal = (s8)sta->last_signal;
492 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
493 }
494 if (sta->chains) {
495 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
496 STATION_INFO_CHAIN_SIGNAL_AVG;
497
498 sinfo->chains = sta->chains;
499 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
500 sinfo->chain_signal[i] = sta->chain_signal_last[i];
501 sinfo->chain_signal_avg[i] =
502 (s8) -ewma_read(&sta->chain_signal_avg[i]);
503 }
504 }
505
506 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
507 sta_set_rate_info_rx(sta, &sinfo->rxrate);
508
509 if (ieee80211_vif_is_mesh(&sdata->vif)) {
510 #ifdef CONFIG_MAC80211_MESH
511 sinfo->filled |= STATION_INFO_LLID |
512 STATION_INFO_PLID |
513 STATION_INFO_PLINK_STATE |
514 STATION_INFO_LOCAL_PM |
515 STATION_INFO_PEER_PM |
516 STATION_INFO_NONPEER_PM;
517
518 sinfo->llid = le16_to_cpu(sta->llid);
519 sinfo->plid = le16_to_cpu(sta->plid);
520 sinfo->plink_state = sta->plink_state;
521 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
522 sinfo->filled |= STATION_INFO_T_OFFSET;
523 sinfo->t_offset = sta->t_offset;
524 }
525 sinfo->local_pm = sta->local_pm;
526 sinfo->peer_pm = sta->peer_pm;
527 sinfo->nonpeer_pm = sta->nonpeer_pm;
528 #endif
529 }
530
531 sinfo->bss_param.flags = 0;
532 if (sdata->vif.bss_conf.use_cts_prot)
533 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
534 if (sdata->vif.bss_conf.use_short_preamble)
535 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
536 if (sdata->vif.bss_conf.use_short_slot)
537 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
538 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
539 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
540
541 sinfo->sta_flags.set = 0;
542 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
543 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
544 BIT(NL80211_STA_FLAG_WME) |
545 BIT(NL80211_STA_FLAG_MFP) |
546 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
547 BIT(NL80211_STA_FLAG_ASSOCIATED) |
548 BIT(NL80211_STA_FLAG_TDLS_PEER);
549 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
550 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
551 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
552 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
553 if (test_sta_flag(sta, WLAN_STA_WME))
554 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
555 if (test_sta_flag(sta, WLAN_STA_MFP))
556 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
557 if (test_sta_flag(sta, WLAN_STA_AUTH))
558 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
559 if (test_sta_flag(sta, WLAN_STA_ASSOC))
560 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
561 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
562 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
563 }
564
565 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
566 "rx_packets", "rx_bytes", "wep_weak_iv_count",
567 "rx_duplicates", "rx_fragments", "rx_dropped",
568 "tx_packets", "tx_bytes", "tx_fragments",
569 "tx_filtered", "tx_retry_failed", "tx_retries",
570 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
571 "channel", "noise", "ch_time", "ch_time_busy",
572 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
573 };
574 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
575
576 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
577 struct net_device *dev,
578 int sset)
579 {
580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
581 int rv = 0;
582
583 if (sset == ETH_SS_STATS)
584 rv += STA_STATS_LEN;
585
586 rv += drv_get_et_sset_count(sdata, sset);
587
588 if (rv == 0)
589 return -EOPNOTSUPP;
590 return rv;
591 }
592
593 static void ieee80211_get_et_stats(struct wiphy *wiphy,
594 struct net_device *dev,
595 struct ethtool_stats *stats,
596 u64 *data)
597 {
598 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
599 struct ieee80211_chanctx_conf *chanctx_conf;
600 struct ieee80211_channel *channel;
601 struct sta_info *sta;
602 struct ieee80211_local *local = sdata->local;
603 struct station_info sinfo;
604 struct survey_info survey;
605 int i, q;
606 #define STA_STATS_SURVEY_LEN 7
607
608 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
609
610 #define ADD_STA_STATS(sta) \
611 do { \
612 data[i++] += sta->rx_packets; \
613 data[i++] += sta->rx_bytes; \
614 data[i++] += sta->wep_weak_iv_count; \
615 data[i++] += sta->num_duplicates; \
616 data[i++] += sta->rx_fragments; \
617 data[i++] += sta->rx_dropped; \
618 \
619 data[i++] += sinfo.tx_packets; \
620 data[i++] += sinfo.tx_bytes; \
621 data[i++] += sta->tx_fragments; \
622 data[i++] += sta->tx_filtered_count; \
623 data[i++] += sta->tx_retry_failed; \
624 data[i++] += sta->tx_retry_count; \
625 data[i++] += sta->beacon_loss_count; \
626 } while (0)
627
628 /* For Managed stations, find the single station based on BSSID
629 * and use that. For interface types, iterate through all available
630 * stations and add stats for any station that is assigned to this
631 * network device.
632 */
633
634 mutex_lock(&local->sta_mtx);
635
636 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
637 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
638
639 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
640 goto do_survey;
641
642 sinfo.filled = 0;
643 sta_set_sinfo(sta, &sinfo);
644
645 i = 0;
646 ADD_STA_STATS(sta);
647
648 data[i++] = sta->sta_state;
649
650
651 if (sinfo.filled & STATION_INFO_TX_BITRATE)
652 data[i] = 100000 *
653 cfg80211_calculate_bitrate(&sinfo.txrate);
654 i++;
655 if (sinfo.filled & STATION_INFO_RX_BITRATE)
656 data[i] = 100000 *
657 cfg80211_calculate_bitrate(&sinfo.rxrate);
658 i++;
659
660 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
661 data[i] = (u8)sinfo.signal_avg;
662 i++;
663 } else {
664 list_for_each_entry(sta, &local->sta_list, list) {
665 /* Make sure this station belongs to the proper dev */
666 if (sta->sdata->dev != dev)
667 continue;
668
669 sinfo.filled = 0;
670 sta_set_sinfo(sta, &sinfo);
671 i = 0;
672 ADD_STA_STATS(sta);
673 }
674 }
675
676 do_survey:
677 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
678 /* Get survey stats for current channel */
679 survey.filled = 0;
680
681 rcu_read_lock();
682 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
683 if (chanctx_conf)
684 channel = chanctx_conf->def.chan;
685 else
686 channel = NULL;
687 rcu_read_unlock();
688
689 if (channel) {
690 q = 0;
691 do {
692 survey.filled = 0;
693 if (drv_get_survey(local, q, &survey) != 0) {
694 survey.filled = 0;
695 break;
696 }
697 q++;
698 } while (channel != survey.channel);
699 }
700
701 if (survey.filled)
702 data[i++] = survey.channel->center_freq;
703 else
704 data[i++] = 0;
705 if (survey.filled & SURVEY_INFO_NOISE_DBM)
706 data[i++] = (u8)survey.noise;
707 else
708 data[i++] = -1LL;
709 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
710 data[i++] = survey.channel_time;
711 else
712 data[i++] = -1LL;
713 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
714 data[i++] = survey.channel_time_busy;
715 else
716 data[i++] = -1LL;
717 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
718 data[i++] = survey.channel_time_ext_busy;
719 else
720 data[i++] = -1LL;
721 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
722 data[i++] = survey.channel_time_rx;
723 else
724 data[i++] = -1LL;
725 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
726 data[i++] = survey.channel_time_tx;
727 else
728 data[i++] = -1LL;
729
730 mutex_unlock(&local->sta_mtx);
731
732 if (WARN_ON(i != STA_STATS_LEN))
733 return;
734
735 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
736 }
737
738 static void ieee80211_get_et_strings(struct wiphy *wiphy,
739 struct net_device *dev,
740 u32 sset, u8 *data)
741 {
742 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
743 int sz_sta_stats = 0;
744
745 if (sset == ETH_SS_STATS) {
746 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
747 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
748 }
749 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
750 }
751
752 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
753 int idx, u8 *mac, struct station_info *sinfo)
754 {
755 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
756 struct ieee80211_local *local = sdata->local;
757 struct sta_info *sta;
758 int ret = -ENOENT;
759
760 mutex_lock(&local->sta_mtx);
761
762 sta = sta_info_get_by_idx(sdata, idx);
763 if (sta) {
764 ret = 0;
765 memcpy(mac, sta->sta.addr, ETH_ALEN);
766 sta_set_sinfo(sta, sinfo);
767 }
768
769 mutex_unlock(&local->sta_mtx);
770
771 return ret;
772 }
773
774 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
775 int idx, struct survey_info *survey)
776 {
777 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
778
779 return drv_get_survey(local, idx, survey);
780 }
781
782 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
783 u8 *mac, struct station_info *sinfo)
784 {
785 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786 struct ieee80211_local *local = sdata->local;
787 struct sta_info *sta;
788 int ret = -ENOENT;
789
790 mutex_lock(&local->sta_mtx);
791
792 sta = sta_info_get_bss(sdata, mac);
793 if (sta) {
794 ret = 0;
795 sta_set_sinfo(sta, sinfo);
796 }
797
798 mutex_unlock(&local->sta_mtx);
799
800 return ret;
801 }
802
803 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
804 struct cfg80211_chan_def *chandef)
805 {
806 struct ieee80211_local *local = wiphy_priv(wiphy);
807 struct ieee80211_sub_if_data *sdata;
808 int ret = 0;
809
810 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
811 return 0;
812
813 mutex_lock(&local->iflist_mtx);
814 if (local->use_chanctx) {
815 sdata = rcu_dereference_protected(
816 local->monitor_sdata,
817 lockdep_is_held(&local->iflist_mtx));
818 if (sdata) {
819 ieee80211_vif_release_channel(sdata);
820 ret = ieee80211_vif_use_channel(sdata, chandef,
821 IEEE80211_CHANCTX_EXCLUSIVE);
822 }
823 } else if (local->open_count == local->monitors) {
824 local->_oper_chandef = *chandef;
825 ieee80211_hw_config(local, 0);
826 }
827
828 if (ret == 0)
829 local->monitor_chandef = *chandef;
830 mutex_unlock(&local->iflist_mtx);
831
832 return ret;
833 }
834
835 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
836 const u8 *resp, size_t resp_len)
837 {
838 struct probe_resp *new, *old;
839
840 if (!resp || !resp_len)
841 return 1;
842
843 old = rtnl_dereference(sdata->u.ap.probe_resp);
844
845 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
846 if (!new)
847 return -ENOMEM;
848
849 new->len = resp_len;
850 memcpy(new->data, resp, resp_len);
851
852 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
853 if (old)
854 kfree_rcu(old, rcu_head);
855
856 return 0;
857 }
858
859 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
860 struct cfg80211_beacon_data *params)
861 {
862 struct beacon_data *new, *old;
863 int new_head_len, new_tail_len;
864 int size, err;
865 u32 changed = BSS_CHANGED_BEACON;
866
867 old = rtnl_dereference(sdata->u.ap.beacon);
868
869 /* Need to have a beacon head if we don't have one yet */
870 if (!params->head && !old)
871 return -EINVAL;
872
873 /* new or old head? */
874 if (params->head)
875 new_head_len = params->head_len;
876 else
877 new_head_len = old->head_len;
878
879 /* new or old tail? */
880 if (params->tail || !old)
881 /* params->tail_len will be zero for !params->tail */
882 new_tail_len = params->tail_len;
883 else
884 new_tail_len = old->tail_len;
885
886 size = sizeof(*new) + new_head_len + new_tail_len;
887
888 new = kzalloc(size, GFP_KERNEL);
889 if (!new)
890 return -ENOMEM;
891
892 /* start filling the new info now */
893
894 /*
895 * pointers go into the block we allocated,
896 * memory is | beacon_data | head | tail |
897 */
898 new->head = ((u8 *) new) + sizeof(*new);
899 new->tail = new->head + new_head_len;
900 new->head_len = new_head_len;
901 new->tail_len = new_tail_len;
902
903 /* copy in head */
904 if (params->head)
905 memcpy(new->head, params->head, new_head_len);
906 else
907 memcpy(new->head, old->head, new_head_len);
908
909 /* copy in optional tail */
910 if (params->tail)
911 memcpy(new->tail, params->tail, new_tail_len);
912 else
913 if (old)
914 memcpy(new->tail, old->tail, new_tail_len);
915
916 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
917 params->probe_resp_len);
918 if (err < 0)
919 return err;
920 if (err == 0)
921 changed |= BSS_CHANGED_AP_PROBE_RESP;
922
923 rcu_assign_pointer(sdata->u.ap.beacon, new);
924
925 if (old)
926 kfree_rcu(old, rcu_head);
927
928 return changed;
929 }
930
931 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
932 struct cfg80211_ap_settings *params)
933 {
934 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
935 struct beacon_data *old;
936 struct ieee80211_sub_if_data *vlan;
937 u32 changed = BSS_CHANGED_BEACON_INT |
938 BSS_CHANGED_BEACON_ENABLED |
939 BSS_CHANGED_BEACON |
940 BSS_CHANGED_SSID |
941 BSS_CHANGED_P2P_PS;
942 int err;
943
944 old = rtnl_dereference(sdata->u.ap.beacon);
945 if (old)
946 return -EALREADY;
947
948 /* TODO: make hostapd tell us what it wants */
949 sdata->smps_mode = IEEE80211_SMPS_OFF;
950 sdata->needed_rx_chains = sdata->local->rx_chains;
951 sdata->radar_required = params->radar_required;
952
953 err = ieee80211_vif_use_channel(sdata, &params->chandef,
954 IEEE80211_CHANCTX_SHARED);
955 if (err)
956 return err;
957 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
958
959 /*
960 * Apply control port protocol, this allows us to
961 * not encrypt dynamic WEP control frames.
962 */
963 sdata->control_port_protocol = params->crypto.control_port_ethertype;
964 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
965 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
966 vlan->control_port_protocol =
967 params->crypto.control_port_ethertype;
968 vlan->control_port_no_encrypt =
969 params->crypto.control_port_no_encrypt;
970 }
971
972 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
973 sdata->vif.bss_conf.dtim_period = params->dtim_period;
974 sdata->vif.bss_conf.enable_beacon = true;
975
976 sdata->vif.bss_conf.ssid_len = params->ssid_len;
977 if (params->ssid_len)
978 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
979 params->ssid_len);
980 sdata->vif.bss_conf.hidden_ssid =
981 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
982
983 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
984 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
985 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
986 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
987 if (params->p2p_opp_ps)
988 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
989 IEEE80211_P2P_OPPPS_ENABLE_BIT;
990
991 err = ieee80211_assign_beacon(sdata, &params->beacon);
992 if (err < 0)
993 return err;
994 changed |= err;
995
996 err = drv_start_ap(sdata->local, sdata);
997 if (err) {
998 old = rtnl_dereference(sdata->u.ap.beacon);
999 if (old)
1000 kfree_rcu(old, rcu_head);
1001 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1002 return err;
1003 }
1004
1005 ieee80211_bss_info_change_notify(sdata, changed);
1006
1007 netif_carrier_on(dev);
1008 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1009 netif_carrier_on(vlan->dev);
1010
1011 return 0;
1012 }
1013
1014 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1015 struct cfg80211_beacon_data *params)
1016 {
1017 struct ieee80211_sub_if_data *sdata;
1018 struct beacon_data *old;
1019 int err;
1020
1021 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1022
1023 old = rtnl_dereference(sdata->u.ap.beacon);
1024 if (!old)
1025 return -ENOENT;
1026
1027 err = ieee80211_assign_beacon(sdata, params);
1028 if (err < 0)
1029 return err;
1030 ieee80211_bss_info_change_notify(sdata, err);
1031 return 0;
1032 }
1033
1034 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1035 {
1036 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1037 struct ieee80211_sub_if_data *vlan;
1038 struct ieee80211_local *local = sdata->local;
1039 struct beacon_data *old_beacon;
1040 struct probe_resp *old_probe_resp;
1041
1042 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1043 if (!old_beacon)
1044 return -ENOENT;
1045 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1046
1047 /* turn off carrier for this interface and dependent VLANs */
1048 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1049 netif_carrier_off(vlan->dev);
1050 netif_carrier_off(dev);
1051
1052 /* remove beacon and probe response */
1053 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1054 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1055 kfree_rcu(old_beacon, rcu_head);
1056 if (old_probe_resp)
1057 kfree_rcu(old_probe_resp, rcu_head);
1058
1059 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1060 sta_info_flush_defer(vlan);
1061 sta_info_flush_defer(sdata);
1062 synchronize_net();
1063 rcu_barrier();
1064 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1065 sta_info_flush_cleanup(vlan);
1066 ieee80211_free_keys(vlan);
1067 }
1068 sta_info_flush_cleanup(sdata);
1069 ieee80211_free_keys(sdata);
1070
1071 sdata->vif.bss_conf.enable_beacon = false;
1072 sdata->vif.bss_conf.ssid_len = 0;
1073 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1074 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1075
1076 if (sdata->wdev.cac_started) {
1077 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1078 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
1079 GFP_KERNEL);
1080 }
1081
1082 drv_stop_ap(sdata->local, sdata);
1083
1084 /* free all potentially still buffered bcast frames */
1085 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1086 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1087
1088 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1089 ieee80211_vif_release_channel(sdata);
1090
1091 return 0;
1092 }
1093
1094 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1095 struct iapp_layer2_update {
1096 u8 da[ETH_ALEN]; /* broadcast */
1097 u8 sa[ETH_ALEN]; /* STA addr */
1098 __be16 len; /* 6 */
1099 u8 dsap; /* 0 */
1100 u8 ssap; /* 0 */
1101 u8 control;
1102 u8 xid_info[3];
1103 } __packed;
1104
1105 static void ieee80211_send_layer2_update(struct sta_info *sta)
1106 {
1107 struct iapp_layer2_update *msg;
1108 struct sk_buff *skb;
1109
1110 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1111 * bridge devices */
1112
1113 skb = dev_alloc_skb(sizeof(*msg));
1114 if (!skb)
1115 return;
1116 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1117
1118 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1119 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1120
1121 eth_broadcast_addr(msg->da);
1122 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1123 msg->len = htons(6);
1124 msg->dsap = 0;
1125 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1126 msg->control = 0xaf; /* XID response lsb.1111F101.
1127 * F=0 (no poll command; unsolicited frame) */
1128 msg->xid_info[0] = 0x81; /* XID format identifier */
1129 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1130 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1131
1132 skb->dev = sta->sdata->dev;
1133 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1134 memset(skb->cb, 0, sizeof(skb->cb));
1135 netif_rx_ni(skb);
1136 }
1137
1138 static int sta_apply_auth_flags(struct ieee80211_local *local,
1139 struct sta_info *sta,
1140 u32 mask, u32 set)
1141 {
1142 int ret;
1143
1144 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1145 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1146 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1147 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1148 if (ret)
1149 return ret;
1150 }
1151
1152 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1153 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1154 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1155 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1156 if (ret)
1157 return ret;
1158 }
1159
1160 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1161 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1162 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1163 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1164 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1165 else
1166 ret = 0;
1167 if (ret)
1168 return ret;
1169 }
1170
1171 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1172 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1173 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1174 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1175 if (ret)
1176 return ret;
1177 }
1178
1179 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1180 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1181 test_sta_flag(sta, WLAN_STA_AUTH)) {
1182 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1183 if (ret)
1184 return ret;
1185 }
1186
1187 return 0;
1188 }
1189
1190 static int sta_apply_parameters(struct ieee80211_local *local,
1191 struct sta_info *sta,
1192 struct station_parameters *params)
1193 {
1194 int ret = 0;
1195 u32 rates;
1196 int i, j;
1197 struct ieee80211_supported_band *sband;
1198 struct ieee80211_sub_if_data *sdata = sta->sdata;
1199 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1200 u32 mask, set;
1201
1202 sband = local->hw.wiphy->bands[band];
1203
1204 mask = params->sta_flags_mask;
1205 set = params->sta_flags_set;
1206
1207 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1208 /*
1209 * In mesh mode, ASSOCIATED isn't part of the nl80211
1210 * API but must follow AUTHENTICATED for driver state.
1211 */
1212 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1213 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1214 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1215 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1216 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1217 /*
1218 * TDLS -- everything follows authorized, but
1219 * only becoming authorized is possible, not
1220 * going back
1221 */
1222 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1223 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1224 BIT(NL80211_STA_FLAG_ASSOCIATED);
1225 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1226 BIT(NL80211_STA_FLAG_ASSOCIATED);
1227 }
1228 }
1229
1230 ret = sta_apply_auth_flags(local, sta, mask, set);
1231 if (ret)
1232 return ret;
1233
1234 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1235 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1236 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1237 else
1238 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1239 }
1240
1241 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1242 if (set & BIT(NL80211_STA_FLAG_WME)) {
1243 set_sta_flag(sta, WLAN_STA_WME);
1244 sta->sta.wme = true;
1245 } else {
1246 clear_sta_flag(sta, WLAN_STA_WME);
1247 sta->sta.wme = false;
1248 }
1249 }
1250
1251 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1252 if (set & BIT(NL80211_STA_FLAG_MFP))
1253 set_sta_flag(sta, WLAN_STA_MFP);
1254 else
1255 clear_sta_flag(sta, WLAN_STA_MFP);
1256 }
1257
1258 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1259 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1260 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1261 else
1262 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1263 }
1264
1265 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1266 sta->sta.uapsd_queues = params->uapsd_queues;
1267 sta->sta.max_sp = params->max_sp;
1268 }
1269
1270 /*
1271 * cfg80211 validates this (1-2007) and allows setting the AID
1272 * only when creating a new station entry
1273 */
1274 if (params->aid)
1275 sta->sta.aid = params->aid;
1276
1277 /*
1278 * Some of the following updates would be racy if called on an
1279 * existing station, via ieee80211_change_station(). However,
1280 * all such changes are rejected by cfg80211 except for updates
1281 * changing the supported rates on an existing but not yet used
1282 * TDLS peer.
1283 */
1284
1285 if (params->listen_interval >= 0)
1286 sta->listen_interval = params->listen_interval;
1287
1288 if (params->supported_rates) {
1289 rates = 0;
1290
1291 for (i = 0; i < params->supported_rates_len; i++) {
1292 int rate = (params->supported_rates[i] & 0x7f) * 5;
1293 for (j = 0; j < sband->n_bitrates; j++) {
1294 if (sband->bitrates[j].bitrate == rate)
1295 rates |= BIT(j);
1296 }
1297 }
1298 sta->sta.supp_rates[band] = rates;
1299 }
1300
1301 if (params->ht_capa)
1302 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1303 params->ht_capa, sta);
1304
1305 if (params->vht_capa)
1306 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1307 params->vht_capa, sta);
1308
1309 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1310 #ifdef CONFIG_MAC80211_MESH
1311 u32 changed = 0;
1312
1313 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1314 switch (params->plink_state) {
1315 case NL80211_PLINK_ESTAB:
1316 if (sta->plink_state != NL80211_PLINK_ESTAB)
1317 changed = mesh_plink_inc_estab_count(
1318 sdata);
1319 sta->plink_state = params->plink_state;
1320
1321 ieee80211_mps_sta_status_update(sta);
1322 changed |= ieee80211_mps_set_sta_local_pm(sta,
1323 sdata->u.mesh.mshcfg.power_mode);
1324 break;
1325 case NL80211_PLINK_LISTEN:
1326 case NL80211_PLINK_BLOCKED:
1327 case NL80211_PLINK_OPN_SNT:
1328 case NL80211_PLINK_OPN_RCVD:
1329 case NL80211_PLINK_CNF_RCVD:
1330 case NL80211_PLINK_HOLDING:
1331 if (sta->plink_state == NL80211_PLINK_ESTAB)
1332 changed = mesh_plink_dec_estab_count(
1333 sdata);
1334 sta->plink_state = params->plink_state;
1335
1336 ieee80211_mps_sta_status_update(sta);
1337 changed |=
1338 ieee80211_mps_local_status_update(sdata);
1339 break;
1340 default:
1341 /* nothing */
1342 break;
1343 }
1344 }
1345
1346 switch (params->plink_action) {
1347 case NL80211_PLINK_ACTION_NO_ACTION:
1348 /* nothing */
1349 break;
1350 case NL80211_PLINK_ACTION_OPEN:
1351 changed |= mesh_plink_open(sta);
1352 break;
1353 case NL80211_PLINK_ACTION_BLOCK:
1354 changed |= mesh_plink_block(sta);
1355 break;
1356 }
1357
1358 if (params->local_pm)
1359 changed |=
1360 ieee80211_mps_set_sta_local_pm(sta,
1361 params->local_pm);
1362 ieee80211_bss_info_change_notify(sdata, changed);
1363 #endif
1364 }
1365
1366 return 0;
1367 }
1368
1369 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1370 u8 *mac, struct station_parameters *params)
1371 {
1372 struct ieee80211_local *local = wiphy_priv(wiphy);
1373 struct sta_info *sta;
1374 struct ieee80211_sub_if_data *sdata;
1375 int err;
1376 int layer2_update;
1377
1378 if (params->vlan) {
1379 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1380
1381 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1382 sdata->vif.type != NL80211_IFTYPE_AP)
1383 return -EINVAL;
1384 } else
1385 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1386
1387 if (ether_addr_equal(mac, sdata->vif.addr))
1388 return -EINVAL;
1389
1390 if (is_multicast_ether_addr(mac))
1391 return -EINVAL;
1392
1393 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1394 if (!sta)
1395 return -ENOMEM;
1396
1397 /*
1398 * defaults -- if userspace wants something else we'll
1399 * change it accordingly in sta_apply_parameters()
1400 */
1401 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1402 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1403 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1404 }
1405
1406 err = sta_apply_parameters(local, sta, params);
1407 if (err) {
1408 sta_info_free(local, sta);
1409 return err;
1410 }
1411
1412 /*
1413 * for TDLS, rate control should be initialized only when
1414 * rates are known and station is marked authorized
1415 */
1416 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1417 rate_control_rate_init(sta);
1418
1419 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1420 sdata->vif.type == NL80211_IFTYPE_AP;
1421
1422 err = sta_info_insert_rcu(sta);
1423 if (err) {
1424 rcu_read_unlock();
1425 return err;
1426 }
1427
1428 if (layer2_update)
1429 ieee80211_send_layer2_update(sta);
1430
1431 rcu_read_unlock();
1432
1433 return 0;
1434 }
1435
1436 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1437 u8 *mac)
1438 {
1439 struct ieee80211_sub_if_data *sdata;
1440
1441 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1442
1443 if (mac)
1444 return sta_info_destroy_addr_bss(sdata, mac);
1445
1446 sta_info_flush(sdata);
1447 return 0;
1448 }
1449
1450 static int ieee80211_change_station(struct wiphy *wiphy,
1451 struct net_device *dev, u8 *mac,
1452 struct station_parameters *params)
1453 {
1454 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1455 struct ieee80211_local *local = wiphy_priv(wiphy);
1456 struct sta_info *sta;
1457 struct ieee80211_sub_if_data *vlansdata;
1458 enum cfg80211_station_type statype;
1459 int err;
1460
1461 mutex_lock(&local->sta_mtx);
1462
1463 sta = sta_info_get_bss(sdata, mac);
1464 if (!sta) {
1465 err = -ENOENT;
1466 goto out_err;
1467 }
1468
1469 switch (sdata->vif.type) {
1470 case NL80211_IFTYPE_MESH_POINT:
1471 if (sdata->u.mesh.user_mpm)
1472 statype = CFG80211_STA_MESH_PEER_USER;
1473 else
1474 statype = CFG80211_STA_MESH_PEER_KERNEL;
1475 break;
1476 case NL80211_IFTYPE_ADHOC:
1477 statype = CFG80211_STA_IBSS;
1478 break;
1479 case NL80211_IFTYPE_STATION:
1480 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1481 statype = CFG80211_STA_AP_STA;
1482 break;
1483 }
1484 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1485 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1486 else
1487 statype = CFG80211_STA_TDLS_PEER_SETUP;
1488 break;
1489 case NL80211_IFTYPE_AP:
1490 case NL80211_IFTYPE_AP_VLAN:
1491 statype = CFG80211_STA_AP_CLIENT;
1492 break;
1493 default:
1494 err = -EOPNOTSUPP;
1495 goto out_err;
1496 }
1497
1498 err = cfg80211_check_station_change(wiphy, params, statype);
1499 if (err)
1500 goto out_err;
1501
1502 if (params->vlan && params->vlan != sta->sdata->dev) {
1503 bool prev_4addr = false;
1504 bool new_4addr = false;
1505
1506 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1507
1508 if (params->vlan->ieee80211_ptr->use_4addr) {
1509 if (vlansdata->u.vlan.sta) {
1510 err = -EBUSY;
1511 goto out_err;
1512 }
1513
1514 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1515 new_4addr = true;
1516 }
1517
1518 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1519 sta->sdata->u.vlan.sta) {
1520 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1521 prev_4addr = true;
1522 }
1523
1524 sta->sdata = vlansdata;
1525
1526 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1527 prev_4addr != new_4addr) {
1528 if (new_4addr)
1529 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1530 else
1531 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1532 }
1533
1534 ieee80211_send_layer2_update(sta);
1535 }
1536
1537 err = sta_apply_parameters(local, sta, params);
1538 if (err)
1539 goto out_err;
1540
1541 /* When peer becomes authorized, init rate control as well */
1542 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1543 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1544 rate_control_rate_init(sta);
1545
1546 mutex_unlock(&local->sta_mtx);
1547
1548 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1549 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1550 ieee80211_recalc_ps(local, -1);
1551 ieee80211_recalc_ps_vif(sdata);
1552 }
1553
1554 return 0;
1555 out_err:
1556 mutex_unlock(&local->sta_mtx);
1557 return err;
1558 }
1559
1560 #ifdef CONFIG_MAC80211_MESH
1561 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1562 u8 *dst, u8 *next_hop)
1563 {
1564 struct ieee80211_sub_if_data *sdata;
1565 struct mesh_path *mpath;
1566 struct sta_info *sta;
1567
1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1569
1570 rcu_read_lock();
1571 sta = sta_info_get(sdata, next_hop);
1572 if (!sta) {
1573 rcu_read_unlock();
1574 return -ENOENT;
1575 }
1576
1577 mpath = mesh_path_add(sdata, dst);
1578 if (IS_ERR(mpath)) {
1579 rcu_read_unlock();
1580 return PTR_ERR(mpath);
1581 }
1582
1583 mesh_path_fix_nexthop(mpath, sta);
1584
1585 rcu_read_unlock();
1586 return 0;
1587 }
1588
1589 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1590 u8 *dst)
1591 {
1592 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1593
1594 if (dst)
1595 return mesh_path_del(sdata, dst);
1596
1597 mesh_path_flush_by_iface(sdata);
1598 return 0;
1599 }
1600
1601 static int ieee80211_change_mpath(struct wiphy *wiphy,
1602 struct net_device *dev,
1603 u8 *dst, u8 *next_hop)
1604 {
1605 struct ieee80211_sub_if_data *sdata;
1606 struct mesh_path *mpath;
1607 struct sta_info *sta;
1608
1609 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1610
1611 rcu_read_lock();
1612
1613 sta = sta_info_get(sdata, next_hop);
1614 if (!sta) {
1615 rcu_read_unlock();
1616 return -ENOENT;
1617 }
1618
1619 mpath = mesh_path_lookup(sdata, dst);
1620 if (!mpath) {
1621 rcu_read_unlock();
1622 return -ENOENT;
1623 }
1624
1625 mesh_path_fix_nexthop(mpath, sta);
1626
1627 rcu_read_unlock();
1628 return 0;
1629 }
1630
1631 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1632 struct mpath_info *pinfo)
1633 {
1634 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1635
1636 if (next_hop_sta)
1637 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1638 else
1639 memset(next_hop, 0, ETH_ALEN);
1640
1641 memset(pinfo, 0, sizeof(*pinfo));
1642
1643 pinfo->generation = mesh_paths_generation;
1644
1645 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1646 MPATH_INFO_SN |
1647 MPATH_INFO_METRIC |
1648 MPATH_INFO_EXPTIME |
1649 MPATH_INFO_DISCOVERY_TIMEOUT |
1650 MPATH_INFO_DISCOVERY_RETRIES |
1651 MPATH_INFO_FLAGS;
1652
1653 pinfo->frame_qlen = mpath->frame_queue.qlen;
1654 pinfo->sn = mpath->sn;
1655 pinfo->metric = mpath->metric;
1656 if (time_before(jiffies, mpath->exp_time))
1657 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1658 pinfo->discovery_timeout =
1659 jiffies_to_msecs(mpath->discovery_timeout);
1660 pinfo->discovery_retries = mpath->discovery_retries;
1661 if (mpath->flags & MESH_PATH_ACTIVE)
1662 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1663 if (mpath->flags & MESH_PATH_RESOLVING)
1664 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1665 if (mpath->flags & MESH_PATH_SN_VALID)
1666 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1667 if (mpath->flags & MESH_PATH_FIXED)
1668 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1669 if (mpath->flags & MESH_PATH_RESOLVED)
1670 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1671 }
1672
1673 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1674 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1675
1676 {
1677 struct ieee80211_sub_if_data *sdata;
1678 struct mesh_path *mpath;
1679
1680 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1681
1682 rcu_read_lock();
1683 mpath = mesh_path_lookup(sdata, dst);
1684 if (!mpath) {
1685 rcu_read_unlock();
1686 return -ENOENT;
1687 }
1688 memcpy(dst, mpath->dst, ETH_ALEN);
1689 mpath_set_pinfo(mpath, next_hop, pinfo);
1690 rcu_read_unlock();
1691 return 0;
1692 }
1693
1694 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1695 int idx, u8 *dst, u8 *next_hop,
1696 struct mpath_info *pinfo)
1697 {
1698 struct ieee80211_sub_if_data *sdata;
1699 struct mesh_path *mpath;
1700
1701 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1702
1703 rcu_read_lock();
1704 mpath = mesh_path_lookup_by_idx(sdata, idx);
1705 if (!mpath) {
1706 rcu_read_unlock();
1707 return -ENOENT;
1708 }
1709 memcpy(dst, mpath->dst, ETH_ALEN);
1710 mpath_set_pinfo(mpath, next_hop, pinfo);
1711 rcu_read_unlock();
1712 return 0;
1713 }
1714
1715 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1716 struct net_device *dev,
1717 struct mesh_config *conf)
1718 {
1719 struct ieee80211_sub_if_data *sdata;
1720 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1721
1722 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1723 return 0;
1724 }
1725
1726 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1727 {
1728 return (mask >> (parm-1)) & 0x1;
1729 }
1730
1731 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1732 const struct mesh_setup *setup)
1733 {
1734 u8 *new_ie;
1735 const u8 *old_ie;
1736 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1737 struct ieee80211_sub_if_data, u.mesh);
1738
1739 /* allocate information elements */
1740 new_ie = NULL;
1741 old_ie = ifmsh->ie;
1742
1743 if (setup->ie_len) {
1744 new_ie = kmemdup(setup->ie, setup->ie_len,
1745 GFP_KERNEL);
1746 if (!new_ie)
1747 return -ENOMEM;
1748 }
1749 ifmsh->ie_len = setup->ie_len;
1750 ifmsh->ie = new_ie;
1751 kfree(old_ie);
1752
1753 /* now copy the rest of the setup parameters */
1754 ifmsh->mesh_id_len = setup->mesh_id_len;
1755 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1756 ifmsh->mesh_sp_id = setup->sync_method;
1757 ifmsh->mesh_pp_id = setup->path_sel_proto;
1758 ifmsh->mesh_pm_id = setup->path_metric;
1759 ifmsh->user_mpm = setup->user_mpm;
1760 ifmsh->mesh_auth_id = setup->auth_id;
1761 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1762 if (setup->is_authenticated)
1763 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1764 if (setup->is_secure)
1765 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1766
1767 /* mcast rate setting in Mesh Node */
1768 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1769 sizeof(setup->mcast_rate));
1770 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1771
1772 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1773 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1774
1775 return 0;
1776 }
1777
1778 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1779 struct net_device *dev, u32 mask,
1780 const struct mesh_config *nconf)
1781 {
1782 struct mesh_config *conf;
1783 struct ieee80211_sub_if_data *sdata;
1784 struct ieee80211_if_mesh *ifmsh;
1785
1786 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1787 ifmsh = &sdata->u.mesh;
1788
1789 /* Set the config options which we are interested in setting */
1790 conf = &(sdata->u.mesh.mshcfg);
1791 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1792 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1793 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1794 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1795 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1796 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1797 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1798 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1799 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1800 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1801 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1802 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1803 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1804 conf->element_ttl = nconf->element_ttl;
1805 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1806 if (ifmsh->user_mpm)
1807 return -EBUSY;
1808 conf->auto_open_plinks = nconf->auto_open_plinks;
1809 }
1810 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1811 conf->dot11MeshNbrOffsetMaxNeighbor =
1812 nconf->dot11MeshNbrOffsetMaxNeighbor;
1813 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1814 conf->dot11MeshHWMPmaxPREQretries =
1815 nconf->dot11MeshHWMPmaxPREQretries;
1816 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1817 conf->path_refresh_time = nconf->path_refresh_time;
1818 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1819 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1820 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1821 conf->dot11MeshHWMPactivePathTimeout =
1822 nconf->dot11MeshHWMPactivePathTimeout;
1823 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1824 conf->dot11MeshHWMPpreqMinInterval =
1825 nconf->dot11MeshHWMPpreqMinInterval;
1826 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1827 conf->dot11MeshHWMPperrMinInterval =
1828 nconf->dot11MeshHWMPperrMinInterval;
1829 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1830 mask))
1831 conf->dot11MeshHWMPnetDiameterTraversalTime =
1832 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1833 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1834 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1835 ieee80211_mesh_root_setup(ifmsh);
1836 }
1837 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1838 /* our current gate announcement implementation rides on root
1839 * announcements, so require this ifmsh to also be a root node
1840 * */
1841 if (nconf->dot11MeshGateAnnouncementProtocol &&
1842 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1843 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1844 ieee80211_mesh_root_setup(ifmsh);
1845 }
1846 conf->dot11MeshGateAnnouncementProtocol =
1847 nconf->dot11MeshGateAnnouncementProtocol;
1848 }
1849 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1850 conf->dot11MeshHWMPRannInterval =
1851 nconf->dot11MeshHWMPRannInterval;
1852 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1853 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1854 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1855 /* our RSSI threshold implementation is supported only for
1856 * devices that report signal in dBm.
1857 */
1858 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1859 return -ENOTSUPP;
1860 conf->rssi_threshold = nconf->rssi_threshold;
1861 }
1862 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1863 conf->ht_opmode = nconf->ht_opmode;
1864 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1865 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1866 }
1867 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1868 conf->dot11MeshHWMPactivePathToRootTimeout =
1869 nconf->dot11MeshHWMPactivePathToRootTimeout;
1870 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1871 conf->dot11MeshHWMProotInterval =
1872 nconf->dot11MeshHWMProotInterval;
1873 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1874 conf->dot11MeshHWMPconfirmationInterval =
1875 nconf->dot11MeshHWMPconfirmationInterval;
1876 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1877 conf->power_mode = nconf->power_mode;
1878 ieee80211_mps_local_status_update(sdata);
1879 }
1880 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1881 conf->dot11MeshAwakeWindowDuration =
1882 nconf->dot11MeshAwakeWindowDuration;
1883 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1884 conf->plink_timeout = nconf->plink_timeout;
1885 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1886 return 0;
1887 }
1888
1889 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1890 const struct mesh_config *conf,
1891 const struct mesh_setup *setup)
1892 {
1893 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1894 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1895 int err;
1896
1897 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1898 err = copy_mesh_setup(ifmsh, setup);
1899 if (err)
1900 return err;
1901
1902 /* can mesh use other SMPS modes? */
1903 sdata->smps_mode = IEEE80211_SMPS_OFF;
1904 sdata->needed_rx_chains = sdata->local->rx_chains;
1905
1906 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1907 IEEE80211_CHANCTX_SHARED);
1908 if (err)
1909 return err;
1910
1911 return ieee80211_start_mesh(sdata);
1912 }
1913
1914 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1915 {
1916 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1917
1918 ieee80211_stop_mesh(sdata);
1919 ieee80211_vif_release_channel(sdata);
1920
1921 return 0;
1922 }
1923 #endif
1924
1925 static int ieee80211_change_bss(struct wiphy *wiphy,
1926 struct net_device *dev,
1927 struct bss_parameters *params)
1928 {
1929 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1930 enum ieee80211_band band;
1931 u32 changed = 0;
1932
1933 if (!rtnl_dereference(sdata->u.ap.beacon))
1934 return -ENOENT;
1935
1936 band = ieee80211_get_sdata_band(sdata);
1937
1938 if (params->use_cts_prot >= 0) {
1939 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1940 changed |= BSS_CHANGED_ERP_CTS_PROT;
1941 }
1942 if (params->use_short_preamble >= 0) {
1943 sdata->vif.bss_conf.use_short_preamble =
1944 params->use_short_preamble;
1945 changed |= BSS_CHANGED_ERP_PREAMBLE;
1946 }
1947
1948 if (!sdata->vif.bss_conf.use_short_slot &&
1949 band == IEEE80211_BAND_5GHZ) {
1950 sdata->vif.bss_conf.use_short_slot = true;
1951 changed |= BSS_CHANGED_ERP_SLOT;
1952 }
1953
1954 if (params->use_short_slot_time >= 0) {
1955 sdata->vif.bss_conf.use_short_slot =
1956 params->use_short_slot_time;
1957 changed |= BSS_CHANGED_ERP_SLOT;
1958 }
1959
1960 if (params->basic_rates) {
1961 int i, j;
1962 u32 rates = 0;
1963 struct ieee80211_supported_band *sband = wiphy->bands[band];
1964
1965 for (i = 0; i < params->basic_rates_len; i++) {
1966 int rate = (params->basic_rates[i] & 0x7f) * 5;
1967 for (j = 0; j < sband->n_bitrates; j++) {
1968 if (sband->bitrates[j].bitrate == rate)
1969 rates |= BIT(j);
1970 }
1971 }
1972 sdata->vif.bss_conf.basic_rates = rates;
1973 changed |= BSS_CHANGED_BASIC_RATES;
1974 }
1975
1976 if (params->ap_isolate >= 0) {
1977 if (params->ap_isolate)
1978 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1979 else
1980 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1981 }
1982
1983 if (params->ht_opmode >= 0) {
1984 sdata->vif.bss_conf.ht_operation_mode =
1985 (u16) params->ht_opmode;
1986 changed |= BSS_CHANGED_HT;
1987 }
1988
1989 if (params->p2p_ctwindow >= 0) {
1990 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1991 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1992 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1993 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1994 changed |= BSS_CHANGED_P2P_PS;
1995 }
1996
1997 if (params->p2p_opp_ps > 0) {
1998 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1999 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2000 changed |= BSS_CHANGED_P2P_PS;
2001 } else if (params->p2p_opp_ps == 0) {
2002 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2003 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2004 changed |= BSS_CHANGED_P2P_PS;
2005 }
2006
2007 ieee80211_bss_info_change_notify(sdata, changed);
2008
2009 return 0;
2010 }
2011
2012 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2013 struct net_device *dev,
2014 struct ieee80211_txq_params *params)
2015 {
2016 struct ieee80211_local *local = wiphy_priv(wiphy);
2017 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2018 struct ieee80211_tx_queue_params p;
2019
2020 if (!local->ops->conf_tx)
2021 return -EOPNOTSUPP;
2022
2023 if (local->hw.queues < IEEE80211_NUM_ACS)
2024 return -EOPNOTSUPP;
2025
2026 memset(&p, 0, sizeof(p));
2027 p.aifs = params->aifs;
2028 p.cw_max = params->cwmax;
2029 p.cw_min = params->cwmin;
2030 p.txop = params->txop;
2031
2032 /*
2033 * Setting tx queue params disables u-apsd because it's only
2034 * called in master mode.
2035 */
2036 p.uapsd = false;
2037
2038 sdata->tx_conf[params->ac] = p;
2039 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2040 wiphy_debug(local->hw.wiphy,
2041 "failed to set TX queue parameters for AC %d\n",
2042 params->ac);
2043 return -EINVAL;
2044 }
2045
2046 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2047
2048 return 0;
2049 }
2050
2051 #ifdef CONFIG_PM
2052 static int ieee80211_suspend(struct wiphy *wiphy,
2053 struct cfg80211_wowlan *wowlan)
2054 {
2055 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2056 }
2057
2058 static int ieee80211_resume(struct wiphy *wiphy)
2059 {
2060 return __ieee80211_resume(wiphy_priv(wiphy));
2061 }
2062 #else
2063 #define ieee80211_suspend NULL
2064 #define ieee80211_resume NULL
2065 #endif
2066
2067 static int ieee80211_scan(struct wiphy *wiphy,
2068 struct cfg80211_scan_request *req)
2069 {
2070 struct ieee80211_sub_if_data *sdata;
2071
2072 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2073
2074 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2075 case NL80211_IFTYPE_STATION:
2076 case NL80211_IFTYPE_ADHOC:
2077 case NL80211_IFTYPE_MESH_POINT:
2078 case NL80211_IFTYPE_P2P_CLIENT:
2079 case NL80211_IFTYPE_P2P_DEVICE:
2080 break;
2081 case NL80211_IFTYPE_P2P_GO:
2082 if (sdata->local->ops->hw_scan)
2083 break;
2084 /*
2085 * FIXME: implement NoA while scanning in software,
2086 * for now fall through to allow scanning only when
2087 * beaconing hasn't been configured yet
2088 */
2089 case NL80211_IFTYPE_AP:
2090 /*
2091 * If the scan has been forced (and the driver supports
2092 * forcing), don't care about being beaconing already.
2093 * This will create problems to the attached stations (e.g. all
2094 * the frames sent while scanning on other channel will be
2095 * lost)
2096 */
2097 if (sdata->u.ap.beacon &&
2098 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2099 !(req->flags & NL80211_SCAN_FLAG_AP)))
2100 return -EOPNOTSUPP;
2101 break;
2102 default:
2103 return -EOPNOTSUPP;
2104 }
2105
2106 return ieee80211_request_scan(sdata, req);
2107 }
2108
2109 static int
2110 ieee80211_sched_scan_start(struct wiphy *wiphy,
2111 struct net_device *dev,
2112 struct cfg80211_sched_scan_request *req)
2113 {
2114 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2115
2116 if (!sdata->local->ops->sched_scan_start)
2117 return -EOPNOTSUPP;
2118
2119 return ieee80211_request_sched_scan_start(sdata, req);
2120 }
2121
2122 static int
2123 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2124 {
2125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2126
2127 if (!sdata->local->ops->sched_scan_stop)
2128 return -EOPNOTSUPP;
2129
2130 return ieee80211_request_sched_scan_stop(sdata);
2131 }
2132
2133 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2134 struct cfg80211_auth_request *req)
2135 {
2136 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2137 }
2138
2139 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2140 struct cfg80211_assoc_request *req)
2141 {
2142 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2143 }
2144
2145 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2146 struct cfg80211_deauth_request *req)
2147 {
2148 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2149 }
2150
2151 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2152 struct cfg80211_disassoc_request *req)
2153 {
2154 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2155 }
2156
2157 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2158 struct cfg80211_ibss_params *params)
2159 {
2160 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2161 }
2162
2163 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2164 {
2165 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2166 }
2167
2168 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2169 int rate[IEEE80211_NUM_BANDS])
2170 {
2171 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2172
2173 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2174 sizeof(int) * IEEE80211_NUM_BANDS);
2175
2176 return 0;
2177 }
2178
2179 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2180 {
2181 struct ieee80211_local *local = wiphy_priv(wiphy);
2182 int err;
2183
2184 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2185 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2186
2187 if (err)
2188 return err;
2189 }
2190
2191 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2192 err = drv_set_coverage_class(local, wiphy->coverage_class);
2193
2194 if (err)
2195 return err;
2196 }
2197
2198 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2199 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2200
2201 if (err)
2202 return err;
2203 }
2204
2205 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2206 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2207 return -EINVAL;
2208 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2209 }
2210 if (changed & WIPHY_PARAM_RETRY_LONG) {
2211 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2212 return -EINVAL;
2213 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2214 }
2215 if (changed &
2216 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2217 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2218
2219 return 0;
2220 }
2221
2222 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2223 struct wireless_dev *wdev,
2224 enum nl80211_tx_power_setting type, int mbm)
2225 {
2226 struct ieee80211_local *local = wiphy_priv(wiphy);
2227 struct ieee80211_sub_if_data *sdata;
2228
2229 if (wdev) {
2230 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2231
2232 switch (type) {
2233 case NL80211_TX_POWER_AUTOMATIC:
2234 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2235 break;
2236 case NL80211_TX_POWER_LIMITED:
2237 case NL80211_TX_POWER_FIXED:
2238 if (mbm < 0 || (mbm % 100))
2239 return -EOPNOTSUPP;
2240 sdata->user_power_level = MBM_TO_DBM(mbm);
2241 break;
2242 }
2243
2244 ieee80211_recalc_txpower(sdata);
2245
2246 return 0;
2247 }
2248
2249 switch (type) {
2250 case NL80211_TX_POWER_AUTOMATIC:
2251 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2252 break;
2253 case NL80211_TX_POWER_LIMITED:
2254 case NL80211_TX_POWER_FIXED:
2255 if (mbm < 0 || (mbm % 100))
2256 return -EOPNOTSUPP;
2257 local->user_power_level = MBM_TO_DBM(mbm);
2258 break;
2259 }
2260
2261 mutex_lock(&local->iflist_mtx);
2262 list_for_each_entry(sdata, &local->interfaces, list)
2263 sdata->user_power_level = local->user_power_level;
2264 list_for_each_entry(sdata, &local->interfaces, list)
2265 ieee80211_recalc_txpower(sdata);
2266 mutex_unlock(&local->iflist_mtx);
2267
2268 return 0;
2269 }
2270
2271 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2272 struct wireless_dev *wdev,
2273 int *dbm)
2274 {
2275 struct ieee80211_local *local = wiphy_priv(wiphy);
2276 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2277
2278 if (!local->use_chanctx)
2279 *dbm = local->hw.conf.power_level;
2280 else
2281 *dbm = sdata->vif.bss_conf.txpower;
2282
2283 return 0;
2284 }
2285
2286 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2287 const u8 *addr)
2288 {
2289 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2290
2291 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2292
2293 return 0;
2294 }
2295
2296 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2297 {
2298 struct ieee80211_local *local = wiphy_priv(wiphy);
2299
2300 drv_rfkill_poll(local);
2301 }
2302
2303 #ifdef CONFIG_NL80211_TESTMODE
2304 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2305 {
2306 struct ieee80211_local *local = wiphy_priv(wiphy);
2307
2308 if (!local->ops->testmode_cmd)
2309 return -EOPNOTSUPP;
2310
2311 return local->ops->testmode_cmd(&local->hw, data, len);
2312 }
2313
2314 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2315 struct sk_buff *skb,
2316 struct netlink_callback *cb,
2317 void *data, int len)
2318 {
2319 struct ieee80211_local *local = wiphy_priv(wiphy);
2320
2321 if (!local->ops->testmode_dump)
2322 return -EOPNOTSUPP;
2323
2324 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2325 }
2326 #endif
2327
2328 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2329 enum ieee80211_smps_mode smps_mode)
2330 {
2331 const u8 *ap;
2332 enum ieee80211_smps_mode old_req;
2333 int err;
2334
2335 lockdep_assert_held(&sdata->wdev.mtx);
2336
2337 old_req = sdata->u.mgd.req_smps;
2338 sdata->u.mgd.req_smps = smps_mode;
2339
2340 if (old_req == smps_mode &&
2341 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2342 return 0;
2343
2344 /*
2345 * If not associated, or current association is not an HT
2346 * association, there's no need to do anything, just store
2347 * the new value until we associate.
2348 */
2349 if (!sdata->u.mgd.associated ||
2350 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2351 return 0;
2352
2353 ap = sdata->u.mgd.associated->bssid;
2354
2355 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2356 if (sdata->u.mgd.powersave)
2357 smps_mode = IEEE80211_SMPS_DYNAMIC;
2358 else
2359 smps_mode = IEEE80211_SMPS_OFF;
2360 }
2361
2362 /* send SM PS frame to AP */
2363 err = ieee80211_send_smps_action(sdata, smps_mode,
2364 ap, ap);
2365 if (err)
2366 sdata->u.mgd.req_smps = old_req;
2367
2368 return err;
2369 }
2370
2371 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2372 bool enabled, int timeout)
2373 {
2374 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2375 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2376
2377 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2378 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2379 return -EOPNOTSUPP;
2380
2381 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2382 return -EOPNOTSUPP;
2383
2384 if (enabled == sdata->u.mgd.powersave &&
2385 timeout == local->dynamic_ps_forced_timeout)
2386 return 0;
2387
2388 sdata->u.mgd.powersave = enabled;
2389 local->dynamic_ps_forced_timeout = timeout;
2390
2391 /* no change, but if automatic follow powersave */
2392 sdata_lock(sdata);
2393 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2394 sdata_unlock(sdata);
2395
2396 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2397 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2398
2399 ieee80211_recalc_ps(local, -1);
2400 ieee80211_recalc_ps_vif(sdata);
2401
2402 return 0;
2403 }
2404
2405 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2406 struct net_device *dev,
2407 s32 rssi_thold, u32 rssi_hyst)
2408 {
2409 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2410 struct ieee80211_vif *vif = &sdata->vif;
2411 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2412
2413 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2414 rssi_hyst == bss_conf->cqm_rssi_hyst)
2415 return 0;
2416
2417 bss_conf->cqm_rssi_thold = rssi_thold;
2418 bss_conf->cqm_rssi_hyst = rssi_hyst;
2419
2420 /* tell the driver upon association, unless already associated */
2421 if (sdata->u.mgd.associated &&
2422 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2423 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2424
2425 return 0;
2426 }
2427
2428 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2429 struct net_device *dev,
2430 const u8 *addr,
2431 const struct cfg80211_bitrate_mask *mask)
2432 {
2433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2434 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2435 int i, ret;
2436
2437 if (!ieee80211_sdata_running(sdata))
2438 return -ENETDOWN;
2439
2440 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2441 ret = drv_set_bitrate_mask(local, sdata, mask);
2442 if (ret)
2443 return ret;
2444 }
2445
2446 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2447 struct ieee80211_supported_band *sband = wiphy->bands[i];
2448 int j;
2449
2450 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2451 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2452 sizeof(mask->control[i].mcs));
2453
2454 sdata->rc_has_mcs_mask[i] = false;
2455 if (!sband)
2456 continue;
2457
2458 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2459 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2460 sdata->rc_has_mcs_mask[i] = true;
2461 break;
2462 }
2463 }
2464
2465 return 0;
2466 }
2467
2468 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2469 struct ieee80211_sub_if_data *sdata,
2470 struct ieee80211_channel *channel,
2471 unsigned int duration, u64 *cookie,
2472 struct sk_buff *txskb,
2473 enum ieee80211_roc_type type)
2474 {
2475 struct ieee80211_roc_work *roc, *tmp;
2476 bool queued = false;
2477 int ret;
2478
2479 lockdep_assert_held(&local->mtx);
2480
2481 if (local->use_chanctx && !local->ops->remain_on_channel)
2482 return -EOPNOTSUPP;
2483
2484 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2485 if (!roc)
2486 return -ENOMEM;
2487
2488 roc->chan = channel;
2489 roc->duration = duration;
2490 roc->req_duration = duration;
2491 roc->frame = txskb;
2492 roc->type = type;
2493 roc->mgmt_tx_cookie = (unsigned long)txskb;
2494 roc->sdata = sdata;
2495 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2496 INIT_LIST_HEAD(&roc->dependents);
2497
2498 /* if there's one pending or we're scanning, queue this one */
2499 if (!list_empty(&local->roc_list) ||
2500 local->scanning || local->radar_detect_enabled)
2501 goto out_check_combine;
2502
2503 /* if not HW assist, just queue & schedule work */
2504 if (!local->ops->remain_on_channel) {
2505 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2506 goto out_queue;
2507 }
2508
2509 /* otherwise actually kick it off here (for error handling) */
2510
2511 /*
2512 * If the duration is zero, then the driver
2513 * wouldn't actually do anything. Set it to
2514 * 10 for now.
2515 *
2516 * TODO: cancel the off-channel operation
2517 * when we get the SKB's TX status and
2518 * the wait time was zero before.
2519 */
2520 if (!duration)
2521 duration = 10;
2522
2523 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2524 if (ret) {
2525 kfree(roc);
2526 return ret;
2527 }
2528
2529 roc->started = true;
2530 goto out_queue;
2531
2532 out_check_combine:
2533 list_for_each_entry(tmp, &local->roc_list, list) {
2534 if (tmp->chan != channel || tmp->sdata != sdata)
2535 continue;
2536
2537 /*
2538 * Extend this ROC if possible:
2539 *
2540 * If it hasn't started yet, just increase the duration
2541 * and add the new one to the list of dependents.
2542 * If the type of the new ROC has higher priority, modify the
2543 * type of the previous one to match that of the new one.
2544 */
2545 if (!tmp->started) {
2546 list_add_tail(&roc->list, &tmp->dependents);
2547 tmp->duration = max(tmp->duration, roc->duration);
2548 tmp->type = max(tmp->type, roc->type);
2549 queued = true;
2550 break;
2551 }
2552
2553 /* If it has already started, it's more difficult ... */
2554 if (local->ops->remain_on_channel) {
2555 unsigned long j = jiffies;
2556
2557 /*
2558 * In the offloaded ROC case, if it hasn't begun, add
2559 * this new one to the dependent list to be handled
2560 * when the master one begins. If it has begun,
2561 * check that there's still a minimum time left and
2562 * if so, start this one, transmitting the frame, but
2563 * add it to the list directly after this one with
2564 * a reduced time so we'll ask the driver to execute
2565 * it right after finishing the previous one, in the
2566 * hope that it'll also be executed right afterwards,
2567 * effectively extending the old one.
2568 * If there's no minimum time left, just add it to the
2569 * normal list.
2570 * TODO: the ROC type is ignored here, assuming that it
2571 * is better to immediately use the current ROC.
2572 */
2573 if (!tmp->hw_begun) {
2574 list_add_tail(&roc->list, &tmp->dependents);
2575 queued = true;
2576 break;
2577 }
2578
2579 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2580 tmp->hw_start_time +
2581 msecs_to_jiffies(tmp->duration))) {
2582 int new_dur;
2583
2584 ieee80211_handle_roc_started(roc);
2585
2586 new_dur = roc->duration -
2587 jiffies_to_msecs(tmp->hw_start_time +
2588 msecs_to_jiffies(
2589 tmp->duration) -
2590 j);
2591
2592 if (new_dur > 0) {
2593 /* add right after tmp */
2594 list_add(&roc->list, &tmp->list);
2595 } else {
2596 list_add_tail(&roc->list,
2597 &tmp->dependents);
2598 }
2599 queued = true;
2600 }
2601 } else if (del_timer_sync(&tmp->work.timer)) {
2602 unsigned long new_end;
2603
2604 /*
2605 * In the software ROC case, cancel the timer, if
2606 * that fails then the finish work is already
2607 * queued/pending and thus we queue the new ROC
2608 * normally, if that succeeds then we can extend
2609 * the timer duration and TX the frame (if any.)
2610 */
2611
2612 list_add_tail(&roc->list, &tmp->dependents);
2613 queued = true;
2614
2615 new_end = jiffies + msecs_to_jiffies(roc->duration);
2616
2617 /* ok, it was started & we canceled timer */
2618 if (time_after(new_end, tmp->work.timer.expires))
2619 mod_timer(&tmp->work.timer, new_end);
2620 else
2621 add_timer(&tmp->work.timer);
2622
2623 ieee80211_handle_roc_started(roc);
2624 }
2625 break;
2626 }
2627
2628 out_queue:
2629 if (!queued)
2630 list_add_tail(&roc->list, &local->roc_list);
2631
2632 /*
2633 * cookie is either the roc cookie (for normal roc)
2634 * or the SKB (for mgmt TX)
2635 */
2636 if (!txskb) {
2637 /* local->mtx protects this */
2638 local->roc_cookie_counter++;
2639 roc->cookie = local->roc_cookie_counter;
2640 /* wow, you wrapped 64 bits ... more likely a bug */
2641 if (WARN_ON(roc->cookie == 0)) {
2642 roc->cookie = 1;
2643 local->roc_cookie_counter++;
2644 }
2645 *cookie = roc->cookie;
2646 } else {
2647 *cookie = (unsigned long)txskb;
2648 }
2649
2650 return 0;
2651 }
2652
2653 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2654 struct wireless_dev *wdev,
2655 struct ieee80211_channel *chan,
2656 unsigned int duration,
2657 u64 *cookie)
2658 {
2659 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2660 struct ieee80211_local *local = sdata->local;
2661 int ret;
2662
2663 mutex_lock(&local->mtx);
2664 ret = ieee80211_start_roc_work(local, sdata, chan,
2665 duration, cookie, NULL,
2666 IEEE80211_ROC_TYPE_NORMAL);
2667 mutex_unlock(&local->mtx);
2668
2669 return ret;
2670 }
2671
2672 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2673 u64 cookie, bool mgmt_tx)
2674 {
2675 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2676 int ret;
2677
2678 mutex_lock(&local->mtx);
2679 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2680 struct ieee80211_roc_work *dep, *tmp2;
2681
2682 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2683 if (!mgmt_tx && dep->cookie != cookie)
2684 continue;
2685 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2686 continue;
2687 /* found dependent item -- just remove it */
2688 list_del(&dep->list);
2689 mutex_unlock(&local->mtx);
2690
2691 ieee80211_roc_notify_destroy(dep, true);
2692 return 0;
2693 }
2694
2695 if (!mgmt_tx && roc->cookie != cookie)
2696 continue;
2697 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2698 continue;
2699
2700 found = roc;
2701 break;
2702 }
2703
2704 if (!found) {
2705 mutex_unlock(&local->mtx);
2706 return -ENOENT;
2707 }
2708
2709 /*
2710 * We found the item to cancel, so do that. Note that it
2711 * may have dependents, which we also cancel (and send
2712 * the expired signal for.) Not doing so would be quite
2713 * tricky here, but we may need to fix it later.
2714 */
2715
2716 if (local->ops->remain_on_channel) {
2717 if (found->started) {
2718 ret = drv_cancel_remain_on_channel(local);
2719 if (WARN_ON_ONCE(ret)) {
2720 mutex_unlock(&local->mtx);
2721 return ret;
2722 }
2723 }
2724
2725 list_del(&found->list);
2726
2727 if (found->started)
2728 ieee80211_start_next_roc(local);
2729 mutex_unlock(&local->mtx);
2730
2731 ieee80211_roc_notify_destroy(found, true);
2732 } else {
2733 /* work may be pending so use it all the time */
2734 found->abort = true;
2735 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2736
2737 mutex_unlock(&local->mtx);
2738
2739 /* work will clean up etc */
2740 flush_delayed_work(&found->work);
2741 WARN_ON(!found->to_be_freed);
2742 kfree(found);
2743 }
2744
2745 return 0;
2746 }
2747
2748 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2749 struct wireless_dev *wdev,
2750 u64 cookie)
2751 {
2752 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2753 struct ieee80211_local *local = sdata->local;
2754
2755 return ieee80211_cancel_roc(local, cookie, false);
2756 }
2757
2758 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2759 struct net_device *dev,
2760 struct cfg80211_chan_def *chandef)
2761 {
2762 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2763 struct ieee80211_local *local = sdata->local;
2764 unsigned long timeout;
2765 int err;
2766
2767 if (!list_empty(&local->roc_list) || local->scanning)
2768 return -EBUSY;
2769
2770 /* whatever, but channel contexts should not complain about that one */
2771 sdata->smps_mode = IEEE80211_SMPS_OFF;
2772 sdata->needed_rx_chains = local->rx_chains;
2773 sdata->radar_required = true;
2774
2775 mutex_lock(&local->iflist_mtx);
2776 err = ieee80211_vif_use_channel(sdata, chandef,
2777 IEEE80211_CHANCTX_SHARED);
2778 mutex_unlock(&local->iflist_mtx);
2779 if (err)
2780 return err;
2781
2782 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2783 ieee80211_queue_delayed_work(&sdata->local->hw,
2784 &sdata->dfs_cac_timer_work, timeout);
2785
2786 return 0;
2787 }
2788
2789 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2790 struct ieee80211_channel *chan, bool offchan,
2791 unsigned int wait, const u8 *buf, size_t len,
2792 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2793 {
2794 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2795 struct ieee80211_local *local = sdata->local;
2796 struct sk_buff *skb;
2797 struct sta_info *sta;
2798 const struct ieee80211_mgmt *mgmt = (void *)buf;
2799 bool need_offchan = false;
2800 u32 flags;
2801 int ret;
2802
2803 if (dont_wait_for_ack)
2804 flags = IEEE80211_TX_CTL_NO_ACK;
2805 else
2806 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2807 IEEE80211_TX_CTL_REQ_TX_STATUS;
2808
2809 if (no_cck)
2810 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2811
2812 switch (sdata->vif.type) {
2813 case NL80211_IFTYPE_ADHOC:
2814 if (!sdata->vif.bss_conf.ibss_joined)
2815 need_offchan = true;
2816 /* fall through */
2817 #ifdef CONFIG_MAC80211_MESH
2818 case NL80211_IFTYPE_MESH_POINT:
2819 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2820 !sdata->u.mesh.mesh_id_len)
2821 need_offchan = true;
2822 /* fall through */
2823 #endif
2824 case NL80211_IFTYPE_AP:
2825 case NL80211_IFTYPE_AP_VLAN:
2826 case NL80211_IFTYPE_P2P_GO:
2827 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2828 !ieee80211_vif_is_mesh(&sdata->vif) &&
2829 !rcu_access_pointer(sdata->bss->beacon))
2830 need_offchan = true;
2831 if (!ieee80211_is_action(mgmt->frame_control) ||
2832 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
2833 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED)
2834 break;
2835 rcu_read_lock();
2836 sta = sta_info_get(sdata, mgmt->da);
2837 rcu_read_unlock();
2838 if (!sta)
2839 return -ENOLINK;
2840 break;
2841 case NL80211_IFTYPE_STATION:
2842 case NL80211_IFTYPE_P2P_CLIENT:
2843 if (!sdata->u.mgd.associated)
2844 need_offchan = true;
2845 break;
2846 case NL80211_IFTYPE_P2P_DEVICE:
2847 need_offchan = true;
2848 break;
2849 default:
2850 return -EOPNOTSUPP;
2851 }
2852
2853 /* configurations requiring offchan cannot work if no channel has been
2854 * specified
2855 */
2856 if (need_offchan && !chan)
2857 return -EINVAL;
2858
2859 mutex_lock(&local->mtx);
2860
2861 /* Check if the operating channel is the requested channel */
2862 if (!need_offchan) {
2863 struct ieee80211_chanctx_conf *chanctx_conf;
2864
2865 rcu_read_lock();
2866 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2867
2868 if (chanctx_conf) {
2869 need_offchan = chan && (chan != chanctx_conf->def.chan);
2870 } else if (!chan) {
2871 ret = -EINVAL;
2872 rcu_read_unlock();
2873 goto out_unlock;
2874 } else {
2875 need_offchan = true;
2876 }
2877 rcu_read_unlock();
2878 }
2879
2880 if (need_offchan && !offchan) {
2881 ret = -EBUSY;
2882 goto out_unlock;
2883 }
2884
2885 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2886 if (!skb) {
2887 ret = -ENOMEM;
2888 goto out_unlock;
2889 }
2890 skb_reserve(skb, local->hw.extra_tx_headroom);
2891
2892 memcpy(skb_put(skb, len), buf, len);
2893
2894 IEEE80211_SKB_CB(skb)->flags = flags;
2895
2896 skb->dev = sdata->dev;
2897
2898 if (!need_offchan) {
2899 *cookie = (unsigned long) skb;
2900 ieee80211_tx_skb(sdata, skb);
2901 ret = 0;
2902 goto out_unlock;
2903 }
2904
2905 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2906 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2907 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2908 IEEE80211_SKB_CB(skb)->hw_queue =
2909 local->hw.offchannel_tx_hw_queue;
2910
2911 /* This will handle all kinds of coalescing and immediate TX */
2912 ret = ieee80211_start_roc_work(local, sdata, chan,
2913 wait, cookie, skb,
2914 IEEE80211_ROC_TYPE_MGMT_TX);
2915 if (ret)
2916 kfree_skb(skb);
2917 out_unlock:
2918 mutex_unlock(&local->mtx);
2919 return ret;
2920 }
2921
2922 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2923 struct wireless_dev *wdev,
2924 u64 cookie)
2925 {
2926 struct ieee80211_local *local = wiphy_priv(wiphy);
2927
2928 return ieee80211_cancel_roc(local, cookie, true);
2929 }
2930
2931 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2932 struct wireless_dev *wdev,
2933 u16 frame_type, bool reg)
2934 {
2935 struct ieee80211_local *local = wiphy_priv(wiphy);
2936
2937 switch (frame_type) {
2938 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2939 if (reg)
2940 local->probe_req_reg++;
2941 else
2942 local->probe_req_reg--;
2943
2944 if (!local->open_count)
2945 break;
2946
2947 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2948 break;
2949 default:
2950 break;
2951 }
2952 }
2953
2954 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2955 {
2956 struct ieee80211_local *local = wiphy_priv(wiphy);
2957
2958 if (local->started)
2959 return -EOPNOTSUPP;
2960
2961 return drv_set_antenna(local, tx_ant, rx_ant);
2962 }
2963
2964 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2965 {
2966 struct ieee80211_local *local = wiphy_priv(wiphy);
2967
2968 return drv_get_antenna(local, tx_ant, rx_ant);
2969 }
2970
2971 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2972 {
2973 struct ieee80211_local *local = wiphy_priv(wiphy);
2974
2975 return drv_set_ringparam(local, tx, rx);
2976 }
2977
2978 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2979 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2980 {
2981 struct ieee80211_local *local = wiphy_priv(wiphy);
2982
2983 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2984 }
2985
2986 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2987 struct net_device *dev,
2988 struct cfg80211_gtk_rekey_data *data)
2989 {
2990 struct ieee80211_local *local = wiphy_priv(wiphy);
2991 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2992
2993 if (!local->ops->set_rekey_data)
2994 return -EOPNOTSUPP;
2995
2996 drv_set_rekey_data(local, sdata, data);
2997
2998 return 0;
2999 }
3000
3001 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3002 {
3003 u8 *pos = (void *)skb_put(skb, 7);
3004
3005 *pos++ = WLAN_EID_EXT_CAPABILITY;
3006 *pos++ = 5; /* len */
3007 *pos++ = 0x0;
3008 *pos++ = 0x0;
3009 *pos++ = 0x0;
3010 *pos++ = 0x0;
3011 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3012 }
3013
3014 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3015 {
3016 struct ieee80211_local *local = sdata->local;
3017 u16 capab;
3018
3019 capab = 0;
3020 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3021 return capab;
3022
3023 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3024 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3025 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3026 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3027
3028 return capab;
3029 }
3030
3031 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3032 u8 *peer, u8 *bssid)
3033 {
3034 struct ieee80211_tdls_lnkie *lnkid;
3035
3036 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3037
3038 lnkid->ie_type = WLAN_EID_LINK_ID;
3039 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3040
3041 memcpy(lnkid->bssid, bssid, ETH_ALEN);
3042 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3043 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3044 }
3045
3046 static int
3047 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3048 u8 *peer, u8 action_code, u8 dialog_token,
3049 u16 status_code, struct sk_buff *skb)
3050 {
3051 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3052 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3053 struct ieee80211_tdls_data *tf;
3054
3055 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3056
3057 memcpy(tf->da, peer, ETH_ALEN);
3058 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3059 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3060 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3061
3062 switch (action_code) {
3063 case WLAN_TDLS_SETUP_REQUEST:
3064 tf->category = WLAN_CATEGORY_TDLS;
3065 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3066
3067 skb_put(skb, sizeof(tf->u.setup_req));
3068 tf->u.setup_req.dialog_token = dialog_token;
3069 tf->u.setup_req.capability =
3070 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3071
3072 ieee80211_add_srates_ie(sdata, skb, false, band);
3073 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3074 ieee80211_tdls_add_ext_capab(skb);
3075 break;
3076 case WLAN_TDLS_SETUP_RESPONSE:
3077 tf->category = WLAN_CATEGORY_TDLS;
3078 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3079
3080 skb_put(skb, sizeof(tf->u.setup_resp));
3081 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3082 tf->u.setup_resp.dialog_token = dialog_token;
3083 tf->u.setup_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 case WLAN_TDLS_SETUP_CONFIRM:
3091 tf->category = WLAN_CATEGORY_TDLS;
3092 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3093
3094 skb_put(skb, sizeof(tf->u.setup_cfm));
3095 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3096 tf->u.setup_cfm.dialog_token = dialog_token;
3097 break;
3098 case WLAN_TDLS_TEARDOWN:
3099 tf->category = WLAN_CATEGORY_TDLS;
3100 tf->action_code = WLAN_TDLS_TEARDOWN;
3101
3102 skb_put(skb, sizeof(tf->u.teardown));
3103 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3104 break;
3105 case WLAN_TDLS_DISCOVERY_REQUEST:
3106 tf->category = WLAN_CATEGORY_TDLS;
3107 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3108
3109 skb_put(skb, sizeof(tf->u.discover_req));
3110 tf->u.discover_req.dialog_token = dialog_token;
3111 break;
3112 default:
3113 return -EINVAL;
3114 }
3115
3116 return 0;
3117 }
3118
3119 static int
3120 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3121 u8 *peer, u8 action_code, u8 dialog_token,
3122 u16 status_code, struct sk_buff *skb)
3123 {
3124 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3125 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3126 struct ieee80211_mgmt *mgmt;
3127
3128 mgmt = (void *)skb_put(skb, 24);
3129 memset(mgmt, 0, 24);
3130 memcpy(mgmt->da, peer, ETH_ALEN);
3131 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3132 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3133
3134 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3135 IEEE80211_STYPE_ACTION);
3136
3137 switch (action_code) {
3138 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3139 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3140 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3141 mgmt->u.action.u.tdls_discover_resp.action_code =
3142 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3143 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3144 dialog_token;
3145 mgmt->u.action.u.tdls_discover_resp.capability =
3146 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3147
3148 ieee80211_add_srates_ie(sdata, skb, false, band);
3149 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3150 ieee80211_tdls_add_ext_capab(skb);
3151 break;
3152 default:
3153 return -EINVAL;
3154 }
3155
3156 return 0;
3157 }
3158
3159 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3160 u8 *peer, u8 action_code, u8 dialog_token,
3161 u16 status_code, const u8 *extra_ies,
3162 size_t extra_ies_len)
3163 {
3164 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3165 struct ieee80211_local *local = sdata->local;
3166 struct sk_buff *skb = NULL;
3167 bool send_direct;
3168 int ret;
3169
3170 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3171 return -ENOTSUPP;
3172
3173 /* make sure we are in managed mode, and associated */
3174 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3175 !sdata->u.mgd.associated)
3176 return -EINVAL;
3177
3178 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3179 action_code, peer);
3180
3181 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3182 max(sizeof(struct ieee80211_mgmt),
3183 sizeof(struct ieee80211_tdls_data)) +
3184 50 + /* supported rates */
3185 7 + /* ext capab */
3186 extra_ies_len +
3187 sizeof(struct ieee80211_tdls_lnkie));
3188 if (!skb)
3189 return -ENOMEM;
3190
3191 skb_reserve(skb, local->hw.extra_tx_headroom);
3192
3193 switch (action_code) {
3194 case WLAN_TDLS_SETUP_REQUEST:
3195 case WLAN_TDLS_SETUP_RESPONSE:
3196 case WLAN_TDLS_SETUP_CONFIRM:
3197 case WLAN_TDLS_TEARDOWN:
3198 case WLAN_TDLS_DISCOVERY_REQUEST:
3199 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3200 action_code, dialog_token,
3201 status_code, skb);
3202 send_direct = false;
3203 break;
3204 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3205 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3206 dialog_token, status_code,
3207 skb);
3208 send_direct = true;
3209 break;
3210 default:
3211 ret = -ENOTSUPP;
3212 break;
3213 }
3214
3215 if (ret < 0)
3216 goto fail;
3217
3218 if (extra_ies_len)
3219 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3220
3221 /* the TDLS link IE is always added last */
3222 switch (action_code) {
3223 case WLAN_TDLS_SETUP_REQUEST:
3224 case WLAN_TDLS_SETUP_CONFIRM:
3225 case WLAN_TDLS_TEARDOWN:
3226 case WLAN_TDLS_DISCOVERY_REQUEST:
3227 /* we are the initiator */
3228 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3229 sdata->u.mgd.bssid);
3230 break;
3231 case WLAN_TDLS_SETUP_RESPONSE:
3232 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3233 /* we are the responder */
3234 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3235 sdata->u.mgd.bssid);
3236 break;
3237 default:
3238 ret = -ENOTSUPP;
3239 goto fail;
3240 }
3241
3242 if (send_direct) {
3243 ieee80211_tx_skb(sdata, skb);
3244 return 0;
3245 }
3246
3247 /*
3248 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3249 * we should default to AC_VI.
3250 */
3251 switch (action_code) {
3252 case WLAN_TDLS_SETUP_REQUEST:
3253 case WLAN_TDLS_SETUP_RESPONSE:
3254 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3255 skb->priority = 2;
3256 break;
3257 default:
3258 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3259 skb->priority = 5;
3260 break;
3261 }
3262
3263 /* disable bottom halves when entering the Tx path */
3264 local_bh_disable();
3265 ret = ieee80211_subif_start_xmit(skb, dev);
3266 local_bh_enable();
3267
3268 return ret;
3269
3270 fail:
3271 dev_kfree_skb(skb);
3272 return ret;
3273 }
3274
3275 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3276 u8 *peer, enum nl80211_tdls_operation oper)
3277 {
3278 struct sta_info *sta;
3279 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3280
3281 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3282 return -ENOTSUPP;
3283
3284 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3285 return -EINVAL;
3286
3287 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3288
3289 switch (oper) {
3290 case NL80211_TDLS_ENABLE_LINK:
3291 rcu_read_lock();
3292 sta = sta_info_get(sdata, peer);
3293 if (!sta) {
3294 rcu_read_unlock();
3295 return -ENOLINK;
3296 }
3297
3298 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3299 rcu_read_unlock();
3300 break;
3301 case NL80211_TDLS_DISABLE_LINK:
3302 return sta_info_destroy_addr(sdata, peer);
3303 case NL80211_TDLS_TEARDOWN:
3304 case NL80211_TDLS_SETUP:
3305 case NL80211_TDLS_DISCOVERY_REQ:
3306 /* We don't support in-driver setup/teardown/discovery */
3307 return -ENOTSUPP;
3308 default:
3309 return -ENOTSUPP;
3310 }
3311
3312 return 0;
3313 }
3314
3315 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3316 const u8 *peer, u64 *cookie)
3317 {
3318 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3319 struct ieee80211_local *local = sdata->local;
3320 struct ieee80211_qos_hdr *nullfunc;
3321 struct sk_buff *skb;
3322 int size = sizeof(*nullfunc);
3323 __le16 fc;
3324 bool qos;
3325 struct ieee80211_tx_info *info;
3326 struct sta_info *sta;
3327 struct ieee80211_chanctx_conf *chanctx_conf;
3328 enum ieee80211_band band;
3329
3330 rcu_read_lock();
3331 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3332 if (WARN_ON(!chanctx_conf)) {
3333 rcu_read_unlock();
3334 return -EINVAL;
3335 }
3336 band = chanctx_conf->def.chan->band;
3337 sta = sta_info_get(sdata, peer);
3338 if (sta) {
3339 qos = test_sta_flag(sta, WLAN_STA_WME);
3340 } else {
3341 rcu_read_unlock();
3342 return -ENOLINK;
3343 }
3344
3345 if (qos) {
3346 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3347 IEEE80211_STYPE_QOS_NULLFUNC |
3348 IEEE80211_FCTL_FROMDS);
3349 } else {
3350 size -= 2;
3351 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3352 IEEE80211_STYPE_NULLFUNC |
3353 IEEE80211_FCTL_FROMDS);
3354 }
3355
3356 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3357 if (!skb) {
3358 rcu_read_unlock();
3359 return -ENOMEM;
3360 }
3361
3362 skb->dev = dev;
3363
3364 skb_reserve(skb, local->hw.extra_tx_headroom);
3365
3366 nullfunc = (void *) skb_put(skb, size);
3367 nullfunc->frame_control = fc;
3368 nullfunc->duration_id = 0;
3369 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3370 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3371 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3372 nullfunc->seq_ctrl = 0;
3373
3374 info = IEEE80211_SKB_CB(skb);
3375
3376 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3377 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3378
3379 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3380 skb->priority = 7;
3381 if (qos)
3382 nullfunc->qos_ctrl = cpu_to_le16(7);
3383
3384 local_bh_disable();
3385 ieee80211_xmit(sdata, skb, band);
3386 local_bh_enable();
3387 rcu_read_unlock();
3388
3389 *cookie = (unsigned long) skb;
3390 return 0;
3391 }
3392
3393 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3394 struct wireless_dev *wdev,
3395 struct cfg80211_chan_def *chandef)
3396 {
3397 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3398 struct ieee80211_local *local = wiphy_priv(wiphy);
3399 struct ieee80211_chanctx_conf *chanctx_conf;
3400 int ret = -ENODATA;
3401
3402 rcu_read_lock();
3403 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3404 if (chanctx_conf) {
3405 *chandef = chanctx_conf->def;
3406 ret = 0;
3407 } else if (local->open_count > 0 &&
3408 local->open_count == local->monitors &&
3409 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3410 if (local->use_chanctx)
3411 *chandef = local->monitor_chandef;
3412 else
3413 *chandef = local->_oper_chandef;
3414 ret = 0;
3415 }
3416 rcu_read_unlock();
3417
3418 return ret;
3419 }
3420
3421 #ifdef CONFIG_PM
3422 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3423 {
3424 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3425 }
3426 #endif
3427
3428 struct cfg80211_ops mac80211_config_ops = {
3429 .add_virtual_intf = ieee80211_add_iface,
3430 .del_virtual_intf = ieee80211_del_iface,
3431 .change_virtual_intf = ieee80211_change_iface,
3432 .start_p2p_device = ieee80211_start_p2p_device,
3433 .stop_p2p_device = ieee80211_stop_p2p_device,
3434 .add_key = ieee80211_add_key,
3435 .del_key = ieee80211_del_key,
3436 .get_key = ieee80211_get_key,
3437 .set_default_key = ieee80211_config_default_key,
3438 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3439 .start_ap = ieee80211_start_ap,
3440 .change_beacon = ieee80211_change_beacon,
3441 .stop_ap = ieee80211_stop_ap,
3442 .add_station = ieee80211_add_station,
3443 .del_station = ieee80211_del_station,
3444 .change_station = ieee80211_change_station,
3445 .get_station = ieee80211_get_station,
3446 .dump_station = ieee80211_dump_station,
3447 .dump_survey = ieee80211_dump_survey,
3448 #ifdef CONFIG_MAC80211_MESH
3449 .add_mpath = ieee80211_add_mpath,
3450 .del_mpath = ieee80211_del_mpath,
3451 .change_mpath = ieee80211_change_mpath,
3452 .get_mpath = ieee80211_get_mpath,
3453 .dump_mpath = ieee80211_dump_mpath,
3454 .update_mesh_config = ieee80211_update_mesh_config,
3455 .get_mesh_config = ieee80211_get_mesh_config,
3456 .join_mesh = ieee80211_join_mesh,
3457 .leave_mesh = ieee80211_leave_mesh,
3458 #endif
3459 .change_bss = ieee80211_change_bss,
3460 .set_txq_params = ieee80211_set_txq_params,
3461 .set_monitor_channel = ieee80211_set_monitor_channel,
3462 .suspend = ieee80211_suspend,
3463 .resume = ieee80211_resume,
3464 .scan = ieee80211_scan,
3465 .sched_scan_start = ieee80211_sched_scan_start,
3466 .sched_scan_stop = ieee80211_sched_scan_stop,
3467 .auth = ieee80211_auth,
3468 .assoc = ieee80211_assoc,
3469 .deauth = ieee80211_deauth,
3470 .disassoc = ieee80211_disassoc,
3471 .join_ibss = ieee80211_join_ibss,
3472 .leave_ibss = ieee80211_leave_ibss,
3473 .set_mcast_rate = ieee80211_set_mcast_rate,
3474 .set_wiphy_params = ieee80211_set_wiphy_params,
3475 .set_tx_power = ieee80211_set_tx_power,
3476 .get_tx_power = ieee80211_get_tx_power,
3477 .set_wds_peer = ieee80211_set_wds_peer,
3478 .rfkill_poll = ieee80211_rfkill_poll,
3479 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3480 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3481 .set_power_mgmt = ieee80211_set_power_mgmt,
3482 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3483 .remain_on_channel = ieee80211_remain_on_channel,
3484 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3485 .mgmt_tx = ieee80211_mgmt_tx,
3486 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3487 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3488 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3489 .set_antenna = ieee80211_set_antenna,
3490 .get_antenna = ieee80211_get_antenna,
3491 .set_ringparam = ieee80211_set_ringparam,
3492 .get_ringparam = ieee80211_get_ringparam,
3493 .set_rekey_data = ieee80211_set_rekey_data,
3494 .tdls_oper = ieee80211_tdls_oper,
3495 .tdls_mgmt = ieee80211_tdls_mgmt,
3496 .probe_client = ieee80211_probe_client,
3497 .set_noack_map = ieee80211_set_noack_map,
3498 #ifdef CONFIG_PM
3499 .set_wakeup = ieee80211_set_wakeup,
3500 #endif
3501 .get_et_sset_count = ieee80211_get_et_sset_count,
3502 .get_et_stats = ieee80211_get_et_stats,
3503 .get_et_strings = ieee80211_get_et_strings,
3504 .get_channel = ieee80211_cfg_get_channel,
3505 .start_radar_detection = ieee80211_start_radar_detection,
3506 };
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