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Merge git://git.infradead.org/users/eparis/audit
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24 const char *name,
25 enum nl80211_iftype type,
26 u32 *flags,
27 struct vif_params *params)
28 {
29 struct ieee80211_local *local = wiphy_priv(wiphy);
30 struct wireless_dev *wdev;
31 struct ieee80211_sub_if_data *sdata;
32 int err;
33
34 err = ieee80211_if_add(local, name, &wdev, type, params);
35 if (err)
36 return ERR_PTR(err);
37
38 if (type == NL80211_IFTYPE_MONITOR && flags) {
39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40 sdata->u.mntr_flags = *flags;
41 }
42
43 return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50 return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54 struct net_device *dev,
55 enum nl80211_iftype type, u32 *flags,
56 struct vif_params *params)
57 {
58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59 int ret;
60
61 ret = ieee80211_if_change_type(sdata, type);
62 if (ret)
63 return ret;
64
65 if (type == NL80211_IFTYPE_AP_VLAN &&
66 params && params->use_4addr == 0)
67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68 else if (type == NL80211_IFTYPE_STATION &&
69 params && params->use_4addr >= 0)
70 sdata->u.mgd.use_4addr = params->use_4addr;
71
72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73 struct ieee80211_local *local = sdata->local;
74
75 if (ieee80211_sdata_running(sdata)) {
76 /*
77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
78 * changed while the interface is up.
79 * Else we would need to add a lot of cruft
80 * to update everything:
81 * cooked_mntrs, monitor and all fif_* counters
82 * reconfigure hardware
83 */
84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
86 return -EBUSY;
87
88 ieee80211_adjust_monitor_flags(sdata, -1);
89 sdata->u.mntr_flags = *flags;
90 ieee80211_adjust_monitor_flags(sdata, 1);
91
92 ieee80211_configure_filter(local);
93 } else {
94 /*
95 * Because the interface is down, ieee80211_do_stop
96 * and ieee80211_do_open take care of "everything"
97 * mentioned in the comment above.
98 */
99 sdata->u.mntr_flags = *flags;
100 }
101 }
102
103 return 0;
104 }
105
106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
107 struct wireless_dev *wdev)
108 {
109 return ieee80211_do_open(wdev, true);
110 }
111
112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
116 }
117
118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
119 struct net_device *dev,
120 u16 noack_map)
121 {
122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
123
124 sdata->noack_map = noack_map;
125 return 0;
126 }
127
128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
129 u8 key_idx, bool pairwise, const u8 *mac_addr,
130 struct key_params *params)
131 {
132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
133 struct sta_info *sta = NULL;
134 struct ieee80211_key *key;
135 int err;
136
137 if (!ieee80211_sdata_running(sdata))
138 return -ENETDOWN;
139
140 /* reject WEP and TKIP keys if WEP failed to initialize */
141 switch (params->cipher) {
142 case WLAN_CIPHER_SUITE_WEP40:
143 case WLAN_CIPHER_SUITE_TKIP:
144 case WLAN_CIPHER_SUITE_WEP104:
145 if (IS_ERR(sdata->local->wep_tx_tfm))
146 return -EINVAL;
147 break;
148 default:
149 break;
150 }
151
152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
153 params->key, params->seq_len, params->seq);
154 if (IS_ERR(key))
155 return PTR_ERR(key);
156
157 if (pairwise)
158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
159
160 mutex_lock(&sdata->local->sta_mtx);
161
162 if (mac_addr) {
163 if (ieee80211_vif_is_mesh(&sdata->vif))
164 sta = sta_info_get(sdata, mac_addr);
165 else
166 sta = sta_info_get_bss(sdata, mac_addr);
167 /*
168 * The ASSOC test makes sure the driver is ready to
169 * receive the key. When wpa_supplicant has roamed
170 * using FT, it attempts to set the key before
171 * association has completed, this rejects that attempt
172 * so it will set the key again after assocation.
173 *
174 * TODO: accept the key if we have a station entry and
175 * add it to the device after the station.
176 */
177 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
178 ieee80211_key_free_unused(key);
179 err = -ENOENT;
180 goto out_unlock;
181 }
182 }
183
184 switch (sdata->vif.type) {
185 case NL80211_IFTYPE_STATION:
186 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
187 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
188 break;
189 case NL80211_IFTYPE_AP:
190 case NL80211_IFTYPE_AP_VLAN:
191 /* Keys without a station are used for TX only */
192 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
193 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
194 break;
195 case NL80211_IFTYPE_ADHOC:
196 /* no MFP (yet) */
197 break;
198 case NL80211_IFTYPE_MESH_POINT:
199 #ifdef CONFIG_MAC80211_MESH
200 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
201 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
202 break;
203 #endif
204 case NL80211_IFTYPE_WDS:
205 case NL80211_IFTYPE_MONITOR:
206 case NL80211_IFTYPE_P2P_DEVICE:
207 case NL80211_IFTYPE_UNSPECIFIED:
208 case NUM_NL80211_IFTYPES:
209 case NL80211_IFTYPE_P2P_CLIENT:
210 case NL80211_IFTYPE_P2P_GO:
211 /* shouldn't happen */
212 WARN_ON_ONCE(1);
213 break;
214 }
215
216 err = ieee80211_key_link(key, sdata, sta);
217
218 out_unlock:
219 mutex_unlock(&sdata->local->sta_mtx);
220
221 return err;
222 }
223
224 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
225 u8 key_idx, bool pairwise, const u8 *mac_addr)
226 {
227 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
228 struct ieee80211_local *local = sdata->local;
229 struct sta_info *sta;
230 struct ieee80211_key *key = NULL;
231 int ret;
232
233 mutex_lock(&local->sta_mtx);
234 mutex_lock(&local->key_mtx);
235
236 if (mac_addr) {
237 ret = -ENOENT;
238
239 sta = sta_info_get_bss(sdata, mac_addr);
240 if (!sta)
241 goto out_unlock;
242
243 if (pairwise)
244 key = key_mtx_dereference(local, sta->ptk);
245 else
246 key = key_mtx_dereference(local, sta->gtk[key_idx]);
247 } else
248 key = key_mtx_dereference(local, sdata->keys[key_idx]);
249
250 if (!key) {
251 ret = -ENOENT;
252 goto out_unlock;
253 }
254
255 ieee80211_key_free(key, true);
256
257 ret = 0;
258 out_unlock:
259 mutex_unlock(&local->key_mtx);
260 mutex_unlock(&local->sta_mtx);
261
262 return ret;
263 }
264
265 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
266 u8 key_idx, bool pairwise, const u8 *mac_addr,
267 void *cookie,
268 void (*callback)(void *cookie,
269 struct key_params *params))
270 {
271 struct ieee80211_sub_if_data *sdata;
272 struct sta_info *sta = NULL;
273 u8 seq[6] = {0};
274 struct key_params params;
275 struct ieee80211_key *key = NULL;
276 u64 pn64;
277 u32 iv32;
278 u16 iv16;
279 int err = -ENOENT;
280
281 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
282
283 rcu_read_lock();
284
285 if (mac_addr) {
286 sta = sta_info_get_bss(sdata, mac_addr);
287 if (!sta)
288 goto out;
289
290 if (pairwise)
291 key = rcu_dereference(sta->ptk);
292 else if (key_idx < NUM_DEFAULT_KEYS)
293 key = rcu_dereference(sta->gtk[key_idx]);
294 } else
295 key = rcu_dereference(sdata->keys[key_idx]);
296
297 if (!key)
298 goto out;
299
300 memset(&params, 0, sizeof(params));
301
302 params.cipher = key->conf.cipher;
303
304 switch (key->conf.cipher) {
305 case WLAN_CIPHER_SUITE_TKIP:
306 iv32 = key->u.tkip.tx.iv32;
307 iv16 = key->u.tkip.tx.iv16;
308
309 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
310 drv_get_tkip_seq(sdata->local,
311 key->conf.hw_key_idx,
312 &iv32, &iv16);
313
314 seq[0] = iv16 & 0xff;
315 seq[1] = (iv16 >> 8) & 0xff;
316 seq[2] = iv32 & 0xff;
317 seq[3] = (iv32 >> 8) & 0xff;
318 seq[4] = (iv32 >> 16) & 0xff;
319 seq[5] = (iv32 >> 24) & 0xff;
320 params.seq = seq;
321 params.seq_len = 6;
322 break;
323 case WLAN_CIPHER_SUITE_CCMP:
324 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
325 seq[0] = pn64;
326 seq[1] = pn64 >> 8;
327 seq[2] = pn64 >> 16;
328 seq[3] = pn64 >> 24;
329 seq[4] = pn64 >> 32;
330 seq[5] = pn64 >> 40;
331 params.seq = seq;
332 params.seq_len = 6;
333 break;
334 case WLAN_CIPHER_SUITE_AES_CMAC:
335 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
336 seq[0] = pn64;
337 seq[1] = pn64 >> 8;
338 seq[2] = pn64 >> 16;
339 seq[3] = pn64 >> 24;
340 seq[4] = pn64 >> 32;
341 seq[5] = pn64 >> 40;
342 params.seq = seq;
343 params.seq_len = 6;
344 break;
345 }
346
347 params.key = key->conf.key;
348 params.key_len = key->conf.keylen;
349
350 callback(cookie, &params);
351 err = 0;
352
353 out:
354 rcu_read_unlock();
355 return err;
356 }
357
358 static int ieee80211_config_default_key(struct wiphy *wiphy,
359 struct net_device *dev,
360 u8 key_idx, bool uni,
361 bool multi)
362 {
363 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
364
365 ieee80211_set_default_key(sdata, key_idx, uni, multi);
366
367 return 0;
368 }
369
370 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
371 struct net_device *dev,
372 u8 key_idx)
373 {
374 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
375
376 ieee80211_set_default_mgmt_key(sdata, key_idx);
377
378 return 0;
379 }
380
381 void sta_set_rate_info_tx(struct sta_info *sta,
382 const struct ieee80211_tx_rate *rate,
383 struct rate_info *rinfo)
384 {
385 rinfo->flags = 0;
386 if (rate->flags & IEEE80211_TX_RC_MCS) {
387 rinfo->flags |= RATE_INFO_FLAGS_MCS;
388 rinfo->mcs = rate->idx;
389 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
390 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
391 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
392 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
393 } else {
394 struct ieee80211_supported_band *sband;
395 sband = sta->local->hw.wiphy->bands[
396 ieee80211_get_sdata_band(sta->sdata)];
397 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
398 }
399 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
400 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
401 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
402 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
403 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
404 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
405 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
406 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
407 }
408
409 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
410 {
411 rinfo->flags = 0;
412
413 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
414 rinfo->flags |= RATE_INFO_FLAGS_MCS;
415 rinfo->mcs = sta->last_rx_rate_idx;
416 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
417 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
418 rinfo->nss = sta->last_rx_rate_vht_nss;
419 rinfo->mcs = sta->last_rx_rate_idx;
420 } else {
421 struct ieee80211_supported_band *sband;
422
423 sband = sta->local->hw.wiphy->bands[
424 ieee80211_get_sdata_band(sta->sdata)];
425 rinfo->legacy =
426 sband->bitrates[sta->last_rx_rate_idx].bitrate;
427 }
428
429 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
430 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
431 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
432 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
433 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
434 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
435 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
436 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
437 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
438 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
439 }
440
441 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
442 {
443 struct ieee80211_sub_if_data *sdata = sta->sdata;
444 struct ieee80211_local *local = sdata->local;
445 struct timespec uptime;
446 u64 packets = 0;
447 int ac;
448
449 sinfo->generation = sdata->local->sta_generation;
450
451 sinfo->filled = STATION_INFO_INACTIVE_TIME |
452 STATION_INFO_RX_BYTES64 |
453 STATION_INFO_TX_BYTES64 |
454 STATION_INFO_RX_PACKETS |
455 STATION_INFO_TX_PACKETS |
456 STATION_INFO_TX_RETRIES |
457 STATION_INFO_TX_FAILED |
458 STATION_INFO_TX_BITRATE |
459 STATION_INFO_RX_BITRATE |
460 STATION_INFO_RX_DROP_MISC |
461 STATION_INFO_BSS_PARAM |
462 STATION_INFO_CONNECTED_TIME |
463 STATION_INFO_STA_FLAGS |
464 STATION_INFO_BEACON_LOSS_COUNT;
465
466 do_posix_clock_monotonic_gettime(&uptime);
467 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
468
469 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
470 sinfo->tx_bytes = 0;
471 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
472 sinfo->tx_bytes += sta->tx_bytes[ac];
473 packets += sta->tx_packets[ac];
474 }
475 sinfo->tx_packets = packets;
476 sinfo->rx_bytes = sta->rx_bytes;
477 sinfo->rx_packets = sta->rx_packets;
478 sinfo->tx_retries = sta->tx_retry_count;
479 sinfo->tx_failed = sta->tx_retry_failed;
480 sinfo->rx_dropped_misc = sta->rx_dropped;
481 sinfo->beacon_loss_count = sta->beacon_loss_count;
482
483 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
484 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
485 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
486 if (!local->ops->get_rssi ||
487 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
488 sinfo->signal = (s8)sta->last_signal;
489 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
490 }
491
492 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
493 sta_set_rate_info_rx(sta, &sinfo->rxrate);
494
495 if (ieee80211_vif_is_mesh(&sdata->vif)) {
496 #ifdef CONFIG_MAC80211_MESH
497 sinfo->filled |= STATION_INFO_LLID |
498 STATION_INFO_PLID |
499 STATION_INFO_PLINK_STATE |
500 STATION_INFO_LOCAL_PM |
501 STATION_INFO_PEER_PM |
502 STATION_INFO_NONPEER_PM;
503
504 sinfo->llid = le16_to_cpu(sta->llid);
505 sinfo->plid = le16_to_cpu(sta->plid);
506 sinfo->plink_state = sta->plink_state;
507 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
508 sinfo->filled |= STATION_INFO_T_OFFSET;
509 sinfo->t_offset = sta->t_offset;
510 }
511 sinfo->local_pm = sta->local_pm;
512 sinfo->peer_pm = sta->peer_pm;
513 sinfo->nonpeer_pm = sta->nonpeer_pm;
514 #endif
515 }
516
517 sinfo->bss_param.flags = 0;
518 if (sdata->vif.bss_conf.use_cts_prot)
519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
520 if (sdata->vif.bss_conf.use_short_preamble)
521 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
522 if (sdata->vif.bss_conf.use_short_slot)
523 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
524 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
525 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
526
527 sinfo->sta_flags.set = 0;
528 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
529 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
530 BIT(NL80211_STA_FLAG_WME) |
531 BIT(NL80211_STA_FLAG_MFP) |
532 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
533 BIT(NL80211_STA_FLAG_ASSOCIATED) |
534 BIT(NL80211_STA_FLAG_TDLS_PEER);
535 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
537 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
539 if (test_sta_flag(sta, WLAN_STA_WME))
540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
541 if (test_sta_flag(sta, WLAN_STA_MFP))
542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
543 if (test_sta_flag(sta, WLAN_STA_AUTH))
544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
545 if (test_sta_flag(sta, WLAN_STA_ASSOC))
546 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
547 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
548 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
549 }
550
551 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
552 "rx_packets", "rx_bytes", "wep_weak_iv_count",
553 "rx_duplicates", "rx_fragments", "rx_dropped",
554 "tx_packets", "tx_bytes", "tx_fragments",
555 "tx_filtered", "tx_retry_failed", "tx_retries",
556 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
557 "channel", "noise", "ch_time", "ch_time_busy",
558 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
559 };
560 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
561
562 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
563 struct net_device *dev,
564 int sset)
565 {
566 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
567 int rv = 0;
568
569 if (sset == ETH_SS_STATS)
570 rv += STA_STATS_LEN;
571
572 rv += drv_get_et_sset_count(sdata, sset);
573
574 if (rv == 0)
575 return -EOPNOTSUPP;
576 return rv;
577 }
578
579 static void ieee80211_get_et_stats(struct wiphy *wiphy,
580 struct net_device *dev,
581 struct ethtool_stats *stats,
582 u64 *data)
583 {
584 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
585 struct ieee80211_chanctx_conf *chanctx_conf;
586 struct ieee80211_channel *channel;
587 struct sta_info *sta;
588 struct ieee80211_local *local = sdata->local;
589 struct station_info sinfo;
590 struct survey_info survey;
591 int i, q;
592 #define STA_STATS_SURVEY_LEN 7
593
594 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
595
596 #define ADD_STA_STATS(sta) \
597 do { \
598 data[i++] += sta->rx_packets; \
599 data[i++] += sta->rx_bytes; \
600 data[i++] += sta->wep_weak_iv_count; \
601 data[i++] += sta->num_duplicates; \
602 data[i++] += sta->rx_fragments; \
603 data[i++] += sta->rx_dropped; \
604 \
605 data[i++] += sinfo.tx_packets; \
606 data[i++] += sinfo.tx_bytes; \
607 data[i++] += sta->tx_fragments; \
608 data[i++] += sta->tx_filtered_count; \
609 data[i++] += sta->tx_retry_failed; \
610 data[i++] += sta->tx_retry_count; \
611 data[i++] += sta->beacon_loss_count; \
612 } while (0)
613
614 /* For Managed stations, find the single station based on BSSID
615 * and use that. For interface types, iterate through all available
616 * stations and add stats for any station that is assigned to this
617 * network device.
618 */
619
620 mutex_lock(&local->sta_mtx);
621
622 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
623 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
624
625 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
626 goto do_survey;
627
628 sinfo.filled = 0;
629 sta_set_sinfo(sta, &sinfo);
630
631 i = 0;
632 ADD_STA_STATS(sta);
633
634 data[i++] = sta->sta_state;
635
636
637 if (sinfo.filled & STATION_INFO_TX_BITRATE)
638 data[i] = 100000 *
639 cfg80211_calculate_bitrate(&sinfo.txrate);
640 i++;
641 if (sinfo.filled & STATION_INFO_RX_BITRATE)
642 data[i] = 100000 *
643 cfg80211_calculate_bitrate(&sinfo.rxrate);
644 i++;
645
646 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
647 data[i] = (u8)sinfo.signal_avg;
648 i++;
649 } else {
650 list_for_each_entry(sta, &local->sta_list, list) {
651 /* Make sure this station belongs to the proper dev */
652 if (sta->sdata->dev != dev)
653 continue;
654
655 i = 0;
656 ADD_STA_STATS(sta);
657 }
658 }
659
660 do_survey:
661 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
662 /* Get survey stats for current channel */
663 survey.filled = 0;
664
665 rcu_read_lock();
666 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
667 if (chanctx_conf)
668 channel = chanctx_conf->def.chan;
669 else
670 channel = NULL;
671 rcu_read_unlock();
672
673 if (channel) {
674 q = 0;
675 do {
676 survey.filled = 0;
677 if (drv_get_survey(local, q, &survey) != 0) {
678 survey.filled = 0;
679 break;
680 }
681 q++;
682 } while (channel != survey.channel);
683 }
684
685 if (survey.filled)
686 data[i++] = survey.channel->center_freq;
687 else
688 data[i++] = 0;
689 if (survey.filled & SURVEY_INFO_NOISE_DBM)
690 data[i++] = (u8)survey.noise;
691 else
692 data[i++] = -1LL;
693 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
694 data[i++] = survey.channel_time;
695 else
696 data[i++] = -1LL;
697 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
698 data[i++] = survey.channel_time_busy;
699 else
700 data[i++] = -1LL;
701 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
702 data[i++] = survey.channel_time_ext_busy;
703 else
704 data[i++] = -1LL;
705 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
706 data[i++] = survey.channel_time_rx;
707 else
708 data[i++] = -1LL;
709 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
710 data[i++] = survey.channel_time_tx;
711 else
712 data[i++] = -1LL;
713
714 mutex_unlock(&local->sta_mtx);
715
716 if (WARN_ON(i != STA_STATS_LEN))
717 return;
718
719 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
720 }
721
722 static void ieee80211_get_et_strings(struct wiphy *wiphy,
723 struct net_device *dev,
724 u32 sset, u8 *data)
725 {
726 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
727 int sz_sta_stats = 0;
728
729 if (sset == ETH_SS_STATS) {
730 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
731 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
732 }
733 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
734 }
735
736 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
737 int idx, u8 *mac, struct station_info *sinfo)
738 {
739 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
740 struct ieee80211_local *local = sdata->local;
741 struct sta_info *sta;
742 int ret = -ENOENT;
743
744 mutex_lock(&local->sta_mtx);
745
746 sta = sta_info_get_by_idx(sdata, idx);
747 if (sta) {
748 ret = 0;
749 memcpy(mac, sta->sta.addr, ETH_ALEN);
750 sta_set_sinfo(sta, sinfo);
751 }
752
753 mutex_unlock(&local->sta_mtx);
754
755 return ret;
756 }
757
758 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
759 int idx, struct survey_info *survey)
760 {
761 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
762
763 return drv_get_survey(local, idx, survey);
764 }
765
766 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
767 u8 *mac, struct station_info *sinfo)
768 {
769 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
770 struct ieee80211_local *local = sdata->local;
771 struct sta_info *sta;
772 int ret = -ENOENT;
773
774 mutex_lock(&local->sta_mtx);
775
776 sta = sta_info_get_bss(sdata, mac);
777 if (sta) {
778 ret = 0;
779 sta_set_sinfo(sta, sinfo);
780 }
781
782 mutex_unlock(&local->sta_mtx);
783
784 return ret;
785 }
786
787 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
788 struct cfg80211_chan_def *chandef)
789 {
790 struct ieee80211_local *local = wiphy_priv(wiphy);
791 struct ieee80211_sub_if_data *sdata;
792 int ret = 0;
793
794 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
795 return 0;
796
797 mutex_lock(&local->iflist_mtx);
798 if (local->use_chanctx) {
799 sdata = rcu_dereference_protected(
800 local->monitor_sdata,
801 lockdep_is_held(&local->iflist_mtx));
802 if (sdata) {
803 ieee80211_vif_release_channel(sdata);
804 ret = ieee80211_vif_use_channel(sdata, chandef,
805 IEEE80211_CHANCTX_EXCLUSIVE);
806 }
807 } else if (local->open_count == local->monitors) {
808 local->_oper_chandef = *chandef;
809 ieee80211_hw_config(local, 0);
810 }
811
812 if (ret == 0)
813 local->monitor_chandef = *chandef;
814 mutex_unlock(&local->iflist_mtx);
815
816 return ret;
817 }
818
819 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
820 const u8 *resp, size_t resp_len)
821 {
822 struct probe_resp *new, *old;
823
824 if (!resp || !resp_len)
825 return 1;
826
827 old = rtnl_dereference(sdata->u.ap.probe_resp);
828
829 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
830 if (!new)
831 return -ENOMEM;
832
833 new->len = resp_len;
834 memcpy(new->data, resp, resp_len);
835
836 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
837 if (old)
838 kfree_rcu(old, rcu_head);
839
840 return 0;
841 }
842
843 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
844 struct cfg80211_beacon_data *params)
845 {
846 struct beacon_data *new, *old;
847 int new_head_len, new_tail_len;
848 int size, err;
849 u32 changed = BSS_CHANGED_BEACON;
850
851 old = rtnl_dereference(sdata->u.ap.beacon);
852
853 /* Need to have a beacon head if we don't have one yet */
854 if (!params->head && !old)
855 return -EINVAL;
856
857 /* new or old head? */
858 if (params->head)
859 new_head_len = params->head_len;
860 else
861 new_head_len = old->head_len;
862
863 /* new or old tail? */
864 if (params->tail || !old)
865 /* params->tail_len will be zero for !params->tail */
866 new_tail_len = params->tail_len;
867 else
868 new_tail_len = old->tail_len;
869
870 size = sizeof(*new) + new_head_len + new_tail_len;
871
872 new = kzalloc(size, GFP_KERNEL);
873 if (!new)
874 return -ENOMEM;
875
876 /* start filling the new info now */
877
878 /*
879 * pointers go into the block we allocated,
880 * memory is | beacon_data | head | tail |
881 */
882 new->head = ((u8 *) new) + sizeof(*new);
883 new->tail = new->head + new_head_len;
884 new->head_len = new_head_len;
885 new->tail_len = new_tail_len;
886
887 /* copy in head */
888 if (params->head)
889 memcpy(new->head, params->head, new_head_len);
890 else
891 memcpy(new->head, old->head, new_head_len);
892
893 /* copy in optional tail */
894 if (params->tail)
895 memcpy(new->tail, params->tail, new_tail_len);
896 else
897 if (old)
898 memcpy(new->tail, old->tail, new_tail_len);
899
900 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
901 params->probe_resp_len);
902 if (err < 0)
903 return err;
904 if (err == 0)
905 changed |= BSS_CHANGED_AP_PROBE_RESP;
906
907 rcu_assign_pointer(sdata->u.ap.beacon, new);
908
909 if (old)
910 kfree_rcu(old, rcu_head);
911
912 return changed;
913 }
914
915 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
916 struct cfg80211_ap_settings *params)
917 {
918 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
919 struct beacon_data *old;
920 struct ieee80211_sub_if_data *vlan;
921 u32 changed = BSS_CHANGED_BEACON_INT |
922 BSS_CHANGED_BEACON_ENABLED |
923 BSS_CHANGED_BEACON |
924 BSS_CHANGED_SSID |
925 BSS_CHANGED_P2P_PS;
926 int err;
927
928 old = rtnl_dereference(sdata->u.ap.beacon);
929 if (old)
930 return -EALREADY;
931
932 /* TODO: make hostapd tell us what it wants */
933 sdata->smps_mode = IEEE80211_SMPS_OFF;
934 sdata->needed_rx_chains = sdata->local->rx_chains;
935 sdata->radar_required = params->radar_required;
936
937 err = ieee80211_vif_use_channel(sdata, &params->chandef,
938 IEEE80211_CHANCTX_SHARED);
939 if (err)
940 return err;
941 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
942
943 /*
944 * Apply control port protocol, this allows us to
945 * not encrypt dynamic WEP control frames.
946 */
947 sdata->control_port_protocol = params->crypto.control_port_ethertype;
948 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
949 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
950 vlan->control_port_protocol =
951 params->crypto.control_port_ethertype;
952 vlan->control_port_no_encrypt =
953 params->crypto.control_port_no_encrypt;
954 }
955
956 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
957 sdata->vif.bss_conf.dtim_period = params->dtim_period;
958 sdata->vif.bss_conf.enable_beacon = true;
959
960 sdata->vif.bss_conf.ssid_len = params->ssid_len;
961 if (params->ssid_len)
962 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
963 params->ssid_len);
964 sdata->vif.bss_conf.hidden_ssid =
965 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
966
967 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
968 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
969 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
970 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
971 if (params->p2p_opp_ps)
972 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
973 IEEE80211_P2P_OPPPS_ENABLE_BIT;
974
975 err = ieee80211_assign_beacon(sdata, &params->beacon);
976 if (err < 0)
977 return err;
978 changed |= err;
979
980 err = drv_start_ap(sdata->local, sdata);
981 if (err) {
982 old = rtnl_dereference(sdata->u.ap.beacon);
983 if (old)
984 kfree_rcu(old, rcu_head);
985 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
986 return err;
987 }
988
989 ieee80211_bss_info_change_notify(sdata, changed);
990
991 netif_carrier_on(dev);
992 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
993 netif_carrier_on(vlan->dev);
994
995 return 0;
996 }
997
998 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
999 struct cfg80211_beacon_data *params)
1000 {
1001 struct ieee80211_sub_if_data *sdata;
1002 struct beacon_data *old;
1003 int err;
1004
1005 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1006
1007 old = rtnl_dereference(sdata->u.ap.beacon);
1008 if (!old)
1009 return -ENOENT;
1010
1011 err = ieee80211_assign_beacon(sdata, params);
1012 if (err < 0)
1013 return err;
1014 ieee80211_bss_info_change_notify(sdata, err);
1015 return 0;
1016 }
1017
1018 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1019 {
1020 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1021 struct ieee80211_sub_if_data *vlan;
1022 struct ieee80211_local *local = sdata->local;
1023 struct beacon_data *old_beacon;
1024 struct probe_resp *old_probe_resp;
1025
1026 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1027 if (!old_beacon)
1028 return -ENOENT;
1029 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1030
1031 /* turn off carrier for this interface and dependent VLANs */
1032 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1033 netif_carrier_off(vlan->dev);
1034 netif_carrier_off(dev);
1035
1036 /* remove beacon and probe response */
1037 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1038 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1039 kfree_rcu(old_beacon, rcu_head);
1040 if (old_probe_resp)
1041 kfree_rcu(old_probe_resp, rcu_head);
1042
1043 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1044 sta_info_flush_defer(vlan);
1045 sta_info_flush_defer(sdata);
1046 synchronize_net();
1047 rcu_barrier();
1048 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1049 sta_info_flush_cleanup(vlan);
1050 ieee80211_free_keys(vlan);
1051 }
1052 sta_info_flush_cleanup(sdata);
1053 ieee80211_free_keys(sdata);
1054
1055 sdata->vif.bss_conf.enable_beacon = false;
1056 sdata->vif.bss_conf.ssid_len = 0;
1057 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1058 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1059
1060 drv_stop_ap(sdata->local, sdata);
1061
1062 /* free all potentially still buffered bcast frames */
1063 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1064 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1065
1066 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1067 ieee80211_vif_release_channel(sdata);
1068
1069 return 0;
1070 }
1071
1072 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1073 struct iapp_layer2_update {
1074 u8 da[ETH_ALEN]; /* broadcast */
1075 u8 sa[ETH_ALEN]; /* STA addr */
1076 __be16 len; /* 6 */
1077 u8 dsap; /* 0 */
1078 u8 ssap; /* 0 */
1079 u8 control;
1080 u8 xid_info[3];
1081 } __packed;
1082
1083 static void ieee80211_send_layer2_update(struct sta_info *sta)
1084 {
1085 struct iapp_layer2_update *msg;
1086 struct sk_buff *skb;
1087
1088 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1089 * bridge devices */
1090
1091 skb = dev_alloc_skb(sizeof(*msg));
1092 if (!skb)
1093 return;
1094 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1095
1096 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1097 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1098
1099 eth_broadcast_addr(msg->da);
1100 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1101 msg->len = htons(6);
1102 msg->dsap = 0;
1103 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1104 msg->control = 0xaf; /* XID response lsb.1111F101.
1105 * F=0 (no poll command; unsolicited frame) */
1106 msg->xid_info[0] = 0x81; /* XID format identifier */
1107 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1108 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1109
1110 skb->dev = sta->sdata->dev;
1111 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1112 memset(skb->cb, 0, sizeof(skb->cb));
1113 netif_rx_ni(skb);
1114 }
1115
1116 static int sta_apply_auth_flags(struct ieee80211_local *local,
1117 struct sta_info *sta,
1118 u32 mask, u32 set)
1119 {
1120 int ret;
1121
1122 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1123 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1124 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1125 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1126 if (ret)
1127 return ret;
1128 }
1129
1130 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1131 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1132 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1133 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1134 if (ret)
1135 return ret;
1136 }
1137
1138 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1139 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1140 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1141 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1142 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1143 else
1144 ret = 0;
1145 if (ret)
1146 return ret;
1147 }
1148
1149 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1150 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1151 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1152 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1153 if (ret)
1154 return ret;
1155 }
1156
1157 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1158 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1159 test_sta_flag(sta, WLAN_STA_AUTH)) {
1160 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1161 if (ret)
1162 return ret;
1163 }
1164
1165 return 0;
1166 }
1167
1168 static int sta_apply_parameters(struct ieee80211_local *local,
1169 struct sta_info *sta,
1170 struct station_parameters *params)
1171 {
1172 int ret = 0;
1173 u32 rates;
1174 int i, j;
1175 struct ieee80211_supported_band *sband;
1176 struct ieee80211_sub_if_data *sdata = sta->sdata;
1177 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1178 u32 mask, set;
1179
1180 sband = local->hw.wiphy->bands[band];
1181
1182 mask = params->sta_flags_mask;
1183 set = params->sta_flags_set;
1184
1185 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1186 /*
1187 * In mesh mode, ASSOCIATED isn't part of the nl80211
1188 * API but must follow AUTHENTICATED for driver state.
1189 */
1190 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1191 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1192 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1193 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1194 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1195 /*
1196 * TDLS -- everything follows authorized, but
1197 * only becoming authorized is possible, not
1198 * going back
1199 */
1200 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1201 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1202 BIT(NL80211_STA_FLAG_ASSOCIATED);
1203 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1204 BIT(NL80211_STA_FLAG_ASSOCIATED);
1205 }
1206 }
1207
1208 ret = sta_apply_auth_flags(local, sta, mask, set);
1209 if (ret)
1210 return ret;
1211
1212 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1213 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1214 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1215 else
1216 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1217 }
1218
1219 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1220 if (set & BIT(NL80211_STA_FLAG_WME)) {
1221 set_sta_flag(sta, WLAN_STA_WME);
1222 sta->sta.wme = true;
1223 } else {
1224 clear_sta_flag(sta, WLAN_STA_WME);
1225 sta->sta.wme = false;
1226 }
1227 }
1228
1229 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1230 if (set & BIT(NL80211_STA_FLAG_MFP))
1231 set_sta_flag(sta, WLAN_STA_MFP);
1232 else
1233 clear_sta_flag(sta, WLAN_STA_MFP);
1234 }
1235
1236 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1237 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1238 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1239 else
1240 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1241 }
1242
1243 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1244 sta->sta.uapsd_queues = params->uapsd_queues;
1245 sta->sta.max_sp = params->max_sp;
1246 }
1247
1248 /*
1249 * cfg80211 validates this (1-2007) and allows setting the AID
1250 * only when creating a new station entry
1251 */
1252 if (params->aid)
1253 sta->sta.aid = params->aid;
1254
1255 /*
1256 * Some of the following updates would be racy if called on an
1257 * existing station, via ieee80211_change_station(). However,
1258 * all such changes are rejected by cfg80211 except for updates
1259 * changing the supported rates on an existing but not yet used
1260 * TDLS peer.
1261 */
1262
1263 if (params->listen_interval >= 0)
1264 sta->listen_interval = params->listen_interval;
1265
1266 if (params->supported_rates) {
1267 rates = 0;
1268
1269 for (i = 0; i < params->supported_rates_len; i++) {
1270 int rate = (params->supported_rates[i] & 0x7f) * 5;
1271 for (j = 0; j < sband->n_bitrates; j++) {
1272 if (sband->bitrates[j].bitrate == rate)
1273 rates |= BIT(j);
1274 }
1275 }
1276 sta->sta.supp_rates[band] = rates;
1277 }
1278
1279 if (params->ht_capa)
1280 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1281 params->ht_capa, sta);
1282
1283 if (params->vht_capa)
1284 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1285 params->vht_capa, sta);
1286
1287 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1288 #ifdef CONFIG_MAC80211_MESH
1289 u32 changed = 0;
1290
1291 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1292 switch (params->plink_state) {
1293 case NL80211_PLINK_ESTAB:
1294 if (sta->plink_state != NL80211_PLINK_ESTAB)
1295 changed = mesh_plink_inc_estab_count(
1296 sdata);
1297 sta->plink_state = params->plink_state;
1298
1299 ieee80211_mps_sta_status_update(sta);
1300 changed |= ieee80211_mps_set_sta_local_pm(sta,
1301 sdata->u.mesh.mshcfg.power_mode);
1302 break;
1303 case NL80211_PLINK_LISTEN:
1304 case NL80211_PLINK_BLOCKED:
1305 case NL80211_PLINK_OPN_SNT:
1306 case NL80211_PLINK_OPN_RCVD:
1307 case NL80211_PLINK_CNF_RCVD:
1308 case NL80211_PLINK_HOLDING:
1309 if (sta->plink_state == NL80211_PLINK_ESTAB)
1310 changed = mesh_plink_dec_estab_count(
1311 sdata);
1312 sta->plink_state = params->plink_state;
1313
1314 ieee80211_mps_sta_status_update(sta);
1315 changed |=
1316 ieee80211_mps_local_status_update(sdata);
1317 break;
1318 default:
1319 /* nothing */
1320 break;
1321 }
1322 }
1323
1324 switch (params->plink_action) {
1325 case NL80211_PLINK_ACTION_NO_ACTION:
1326 /* nothing */
1327 break;
1328 case NL80211_PLINK_ACTION_OPEN:
1329 changed |= mesh_plink_open(sta);
1330 break;
1331 case NL80211_PLINK_ACTION_BLOCK:
1332 changed |= mesh_plink_block(sta);
1333 break;
1334 }
1335
1336 if (params->local_pm)
1337 changed |=
1338 ieee80211_mps_set_sta_local_pm(sta,
1339 params->local_pm);
1340 ieee80211_bss_info_change_notify(sdata, changed);
1341 #endif
1342 }
1343
1344 return 0;
1345 }
1346
1347 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1348 u8 *mac, struct station_parameters *params)
1349 {
1350 struct ieee80211_local *local = wiphy_priv(wiphy);
1351 struct sta_info *sta;
1352 struct ieee80211_sub_if_data *sdata;
1353 int err;
1354 int layer2_update;
1355
1356 if (params->vlan) {
1357 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1358
1359 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1360 sdata->vif.type != NL80211_IFTYPE_AP)
1361 return -EINVAL;
1362 } else
1363 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1364
1365 if (ether_addr_equal(mac, sdata->vif.addr))
1366 return -EINVAL;
1367
1368 if (is_multicast_ether_addr(mac))
1369 return -EINVAL;
1370
1371 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1372 if (!sta)
1373 return -ENOMEM;
1374
1375 /*
1376 * defaults -- if userspace wants something else we'll
1377 * change it accordingly in sta_apply_parameters()
1378 */
1379 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1380 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1381 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1382 }
1383
1384 err = sta_apply_parameters(local, sta, params);
1385 if (err) {
1386 sta_info_free(local, sta);
1387 return err;
1388 }
1389
1390 /*
1391 * for TDLS, rate control should be initialized only when
1392 * rates are known and station is marked authorized
1393 */
1394 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1395 rate_control_rate_init(sta);
1396
1397 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1398 sdata->vif.type == NL80211_IFTYPE_AP;
1399
1400 err = sta_info_insert_rcu(sta);
1401 if (err) {
1402 rcu_read_unlock();
1403 return err;
1404 }
1405
1406 if (layer2_update)
1407 ieee80211_send_layer2_update(sta);
1408
1409 rcu_read_unlock();
1410
1411 return 0;
1412 }
1413
1414 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1415 u8 *mac)
1416 {
1417 struct ieee80211_sub_if_data *sdata;
1418
1419 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1420
1421 if (mac)
1422 return sta_info_destroy_addr_bss(sdata, mac);
1423
1424 sta_info_flush(sdata);
1425 return 0;
1426 }
1427
1428 static int ieee80211_change_station(struct wiphy *wiphy,
1429 struct net_device *dev, u8 *mac,
1430 struct station_parameters *params)
1431 {
1432 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433 struct ieee80211_local *local = wiphy_priv(wiphy);
1434 struct sta_info *sta;
1435 struct ieee80211_sub_if_data *vlansdata;
1436 enum cfg80211_station_type statype;
1437 int err;
1438
1439 mutex_lock(&local->sta_mtx);
1440
1441 sta = sta_info_get_bss(sdata, mac);
1442 if (!sta) {
1443 err = -ENOENT;
1444 goto out_err;
1445 }
1446
1447 switch (sdata->vif.type) {
1448 case NL80211_IFTYPE_MESH_POINT:
1449 if (sdata->u.mesh.user_mpm)
1450 statype = CFG80211_STA_MESH_PEER_USER;
1451 else
1452 statype = CFG80211_STA_MESH_PEER_KERNEL;
1453 break;
1454 case NL80211_IFTYPE_ADHOC:
1455 statype = CFG80211_STA_IBSS;
1456 break;
1457 case NL80211_IFTYPE_STATION:
1458 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1459 statype = CFG80211_STA_AP_STA;
1460 break;
1461 }
1462 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1463 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1464 else
1465 statype = CFG80211_STA_TDLS_PEER_SETUP;
1466 break;
1467 case NL80211_IFTYPE_AP:
1468 case NL80211_IFTYPE_AP_VLAN:
1469 statype = CFG80211_STA_AP_CLIENT;
1470 break;
1471 default:
1472 err = -EOPNOTSUPP;
1473 goto out_err;
1474 }
1475
1476 err = cfg80211_check_station_change(wiphy, params, statype);
1477 if (err)
1478 goto out_err;
1479
1480 if (params->vlan && params->vlan != sta->sdata->dev) {
1481 bool prev_4addr = false;
1482 bool new_4addr = false;
1483
1484 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1485
1486 if (params->vlan->ieee80211_ptr->use_4addr) {
1487 if (vlansdata->u.vlan.sta) {
1488 err = -EBUSY;
1489 goto out_err;
1490 }
1491
1492 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1493 new_4addr = true;
1494 }
1495
1496 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1497 sta->sdata->u.vlan.sta) {
1498 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1499 prev_4addr = true;
1500 }
1501
1502 sta->sdata = vlansdata;
1503
1504 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1505 prev_4addr != new_4addr) {
1506 if (new_4addr)
1507 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1508 else
1509 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1510 }
1511
1512 ieee80211_send_layer2_update(sta);
1513 }
1514
1515 err = sta_apply_parameters(local, sta, params);
1516 if (err)
1517 goto out_err;
1518
1519 /* When peer becomes authorized, init rate control as well */
1520 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1521 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1522 rate_control_rate_init(sta);
1523
1524 mutex_unlock(&local->sta_mtx);
1525
1526 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1527 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1528 ieee80211_recalc_ps(local, -1);
1529 ieee80211_recalc_ps_vif(sdata);
1530 }
1531
1532 return 0;
1533 out_err:
1534 mutex_unlock(&local->sta_mtx);
1535 return err;
1536 }
1537
1538 #ifdef CONFIG_MAC80211_MESH
1539 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1540 u8 *dst, u8 *next_hop)
1541 {
1542 struct ieee80211_sub_if_data *sdata;
1543 struct mesh_path *mpath;
1544 struct sta_info *sta;
1545
1546 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1547
1548 rcu_read_lock();
1549 sta = sta_info_get(sdata, next_hop);
1550 if (!sta) {
1551 rcu_read_unlock();
1552 return -ENOENT;
1553 }
1554
1555 mpath = mesh_path_add(sdata, dst);
1556 if (IS_ERR(mpath)) {
1557 rcu_read_unlock();
1558 return PTR_ERR(mpath);
1559 }
1560
1561 mesh_path_fix_nexthop(mpath, sta);
1562
1563 rcu_read_unlock();
1564 return 0;
1565 }
1566
1567 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1568 u8 *dst)
1569 {
1570 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1571
1572 if (dst)
1573 return mesh_path_del(sdata, dst);
1574
1575 mesh_path_flush_by_iface(sdata);
1576 return 0;
1577 }
1578
1579 static int ieee80211_change_mpath(struct wiphy *wiphy,
1580 struct net_device *dev,
1581 u8 *dst, u8 *next_hop)
1582 {
1583 struct ieee80211_sub_if_data *sdata;
1584 struct mesh_path *mpath;
1585 struct sta_info *sta;
1586
1587 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1588
1589 rcu_read_lock();
1590
1591 sta = sta_info_get(sdata, next_hop);
1592 if (!sta) {
1593 rcu_read_unlock();
1594 return -ENOENT;
1595 }
1596
1597 mpath = mesh_path_lookup(sdata, dst);
1598 if (!mpath) {
1599 rcu_read_unlock();
1600 return -ENOENT;
1601 }
1602
1603 mesh_path_fix_nexthop(mpath, sta);
1604
1605 rcu_read_unlock();
1606 return 0;
1607 }
1608
1609 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1610 struct mpath_info *pinfo)
1611 {
1612 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1613
1614 if (next_hop_sta)
1615 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1616 else
1617 memset(next_hop, 0, ETH_ALEN);
1618
1619 memset(pinfo, 0, sizeof(*pinfo));
1620
1621 pinfo->generation = mesh_paths_generation;
1622
1623 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1624 MPATH_INFO_SN |
1625 MPATH_INFO_METRIC |
1626 MPATH_INFO_EXPTIME |
1627 MPATH_INFO_DISCOVERY_TIMEOUT |
1628 MPATH_INFO_DISCOVERY_RETRIES |
1629 MPATH_INFO_FLAGS;
1630
1631 pinfo->frame_qlen = mpath->frame_queue.qlen;
1632 pinfo->sn = mpath->sn;
1633 pinfo->metric = mpath->metric;
1634 if (time_before(jiffies, mpath->exp_time))
1635 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1636 pinfo->discovery_timeout =
1637 jiffies_to_msecs(mpath->discovery_timeout);
1638 pinfo->discovery_retries = mpath->discovery_retries;
1639 if (mpath->flags & MESH_PATH_ACTIVE)
1640 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1641 if (mpath->flags & MESH_PATH_RESOLVING)
1642 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1643 if (mpath->flags & MESH_PATH_SN_VALID)
1644 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1645 if (mpath->flags & MESH_PATH_FIXED)
1646 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1647 if (mpath->flags & MESH_PATH_RESOLVED)
1648 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1649 }
1650
1651 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1652 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1653
1654 {
1655 struct ieee80211_sub_if_data *sdata;
1656 struct mesh_path *mpath;
1657
1658 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1659
1660 rcu_read_lock();
1661 mpath = mesh_path_lookup(sdata, dst);
1662 if (!mpath) {
1663 rcu_read_unlock();
1664 return -ENOENT;
1665 }
1666 memcpy(dst, mpath->dst, ETH_ALEN);
1667 mpath_set_pinfo(mpath, next_hop, pinfo);
1668 rcu_read_unlock();
1669 return 0;
1670 }
1671
1672 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1673 int idx, u8 *dst, u8 *next_hop,
1674 struct mpath_info *pinfo)
1675 {
1676 struct ieee80211_sub_if_data *sdata;
1677 struct mesh_path *mpath;
1678
1679 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1680
1681 rcu_read_lock();
1682 mpath = mesh_path_lookup_by_idx(sdata, idx);
1683 if (!mpath) {
1684 rcu_read_unlock();
1685 return -ENOENT;
1686 }
1687 memcpy(dst, mpath->dst, ETH_ALEN);
1688 mpath_set_pinfo(mpath, next_hop, pinfo);
1689 rcu_read_unlock();
1690 return 0;
1691 }
1692
1693 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1694 struct net_device *dev,
1695 struct mesh_config *conf)
1696 {
1697 struct ieee80211_sub_if_data *sdata;
1698 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1699
1700 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1701 return 0;
1702 }
1703
1704 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1705 {
1706 return (mask >> (parm-1)) & 0x1;
1707 }
1708
1709 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1710 const struct mesh_setup *setup)
1711 {
1712 u8 *new_ie;
1713 const u8 *old_ie;
1714 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1715 struct ieee80211_sub_if_data, u.mesh);
1716
1717 /* allocate information elements */
1718 new_ie = NULL;
1719 old_ie = ifmsh->ie;
1720
1721 if (setup->ie_len) {
1722 new_ie = kmemdup(setup->ie, setup->ie_len,
1723 GFP_KERNEL);
1724 if (!new_ie)
1725 return -ENOMEM;
1726 }
1727 ifmsh->ie_len = setup->ie_len;
1728 ifmsh->ie = new_ie;
1729 kfree(old_ie);
1730
1731 /* now copy the rest of the setup parameters */
1732 ifmsh->mesh_id_len = setup->mesh_id_len;
1733 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1734 ifmsh->mesh_sp_id = setup->sync_method;
1735 ifmsh->mesh_pp_id = setup->path_sel_proto;
1736 ifmsh->mesh_pm_id = setup->path_metric;
1737 ifmsh->user_mpm = setup->user_mpm;
1738 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1739 if (setup->is_authenticated)
1740 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1741 if (setup->is_secure)
1742 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1743
1744 /* mcast rate setting in Mesh Node */
1745 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1746 sizeof(setup->mcast_rate));
1747
1748 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1749 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1750
1751 return 0;
1752 }
1753
1754 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1755 struct net_device *dev, u32 mask,
1756 const struct mesh_config *nconf)
1757 {
1758 struct mesh_config *conf;
1759 struct ieee80211_sub_if_data *sdata;
1760 struct ieee80211_if_mesh *ifmsh;
1761
1762 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1763 ifmsh = &sdata->u.mesh;
1764
1765 /* Set the config options which we are interested in setting */
1766 conf = &(sdata->u.mesh.mshcfg);
1767 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1768 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1769 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1770 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1771 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1772 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1773 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1774 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1775 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1776 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1777 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1778 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1779 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1780 conf->element_ttl = nconf->element_ttl;
1781 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1782 if (ifmsh->user_mpm)
1783 return -EBUSY;
1784 conf->auto_open_plinks = nconf->auto_open_plinks;
1785 }
1786 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1787 conf->dot11MeshNbrOffsetMaxNeighbor =
1788 nconf->dot11MeshNbrOffsetMaxNeighbor;
1789 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1790 conf->dot11MeshHWMPmaxPREQretries =
1791 nconf->dot11MeshHWMPmaxPREQretries;
1792 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1793 conf->path_refresh_time = nconf->path_refresh_time;
1794 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1795 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1796 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1797 conf->dot11MeshHWMPactivePathTimeout =
1798 nconf->dot11MeshHWMPactivePathTimeout;
1799 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1800 conf->dot11MeshHWMPpreqMinInterval =
1801 nconf->dot11MeshHWMPpreqMinInterval;
1802 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1803 conf->dot11MeshHWMPperrMinInterval =
1804 nconf->dot11MeshHWMPperrMinInterval;
1805 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1806 mask))
1807 conf->dot11MeshHWMPnetDiameterTraversalTime =
1808 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1809 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1810 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1811 ieee80211_mesh_root_setup(ifmsh);
1812 }
1813 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1814 /* our current gate announcement implementation rides on root
1815 * announcements, so require this ifmsh to also be a root node
1816 * */
1817 if (nconf->dot11MeshGateAnnouncementProtocol &&
1818 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1819 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1820 ieee80211_mesh_root_setup(ifmsh);
1821 }
1822 conf->dot11MeshGateAnnouncementProtocol =
1823 nconf->dot11MeshGateAnnouncementProtocol;
1824 }
1825 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1826 conf->dot11MeshHWMPRannInterval =
1827 nconf->dot11MeshHWMPRannInterval;
1828 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1829 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1830 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1831 /* our RSSI threshold implementation is supported only for
1832 * devices that report signal in dBm.
1833 */
1834 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1835 return -ENOTSUPP;
1836 conf->rssi_threshold = nconf->rssi_threshold;
1837 }
1838 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1839 conf->ht_opmode = nconf->ht_opmode;
1840 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1841 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1842 }
1843 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1844 conf->dot11MeshHWMPactivePathToRootTimeout =
1845 nconf->dot11MeshHWMPactivePathToRootTimeout;
1846 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1847 conf->dot11MeshHWMProotInterval =
1848 nconf->dot11MeshHWMProotInterval;
1849 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1850 conf->dot11MeshHWMPconfirmationInterval =
1851 nconf->dot11MeshHWMPconfirmationInterval;
1852 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1853 conf->power_mode = nconf->power_mode;
1854 ieee80211_mps_local_status_update(sdata);
1855 }
1856 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1857 conf->dot11MeshAwakeWindowDuration =
1858 nconf->dot11MeshAwakeWindowDuration;
1859 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1860 return 0;
1861 }
1862
1863 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1864 const struct mesh_config *conf,
1865 const struct mesh_setup *setup)
1866 {
1867 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1868 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1869 int err;
1870
1871 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1872 err = copy_mesh_setup(ifmsh, setup);
1873 if (err)
1874 return err;
1875
1876 /* can mesh use other SMPS modes? */
1877 sdata->smps_mode = IEEE80211_SMPS_OFF;
1878 sdata->needed_rx_chains = sdata->local->rx_chains;
1879
1880 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1881 IEEE80211_CHANCTX_SHARED);
1882 if (err)
1883 return err;
1884
1885 return ieee80211_start_mesh(sdata);
1886 }
1887
1888 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1889 {
1890 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1891
1892 ieee80211_stop_mesh(sdata);
1893 ieee80211_vif_release_channel(sdata);
1894
1895 return 0;
1896 }
1897 #endif
1898
1899 static int ieee80211_change_bss(struct wiphy *wiphy,
1900 struct net_device *dev,
1901 struct bss_parameters *params)
1902 {
1903 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1904 enum ieee80211_band band;
1905 u32 changed = 0;
1906
1907 if (!rtnl_dereference(sdata->u.ap.beacon))
1908 return -ENOENT;
1909
1910 band = ieee80211_get_sdata_band(sdata);
1911
1912 if (params->use_cts_prot >= 0) {
1913 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1914 changed |= BSS_CHANGED_ERP_CTS_PROT;
1915 }
1916 if (params->use_short_preamble >= 0) {
1917 sdata->vif.bss_conf.use_short_preamble =
1918 params->use_short_preamble;
1919 changed |= BSS_CHANGED_ERP_PREAMBLE;
1920 }
1921
1922 if (!sdata->vif.bss_conf.use_short_slot &&
1923 band == IEEE80211_BAND_5GHZ) {
1924 sdata->vif.bss_conf.use_short_slot = true;
1925 changed |= BSS_CHANGED_ERP_SLOT;
1926 }
1927
1928 if (params->use_short_slot_time >= 0) {
1929 sdata->vif.bss_conf.use_short_slot =
1930 params->use_short_slot_time;
1931 changed |= BSS_CHANGED_ERP_SLOT;
1932 }
1933
1934 if (params->basic_rates) {
1935 int i, j;
1936 u32 rates = 0;
1937 struct ieee80211_supported_band *sband = wiphy->bands[band];
1938
1939 for (i = 0; i < params->basic_rates_len; i++) {
1940 int rate = (params->basic_rates[i] & 0x7f) * 5;
1941 for (j = 0; j < sband->n_bitrates; j++) {
1942 if (sband->bitrates[j].bitrate == rate)
1943 rates |= BIT(j);
1944 }
1945 }
1946 sdata->vif.bss_conf.basic_rates = rates;
1947 changed |= BSS_CHANGED_BASIC_RATES;
1948 }
1949
1950 if (params->ap_isolate >= 0) {
1951 if (params->ap_isolate)
1952 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1953 else
1954 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1955 }
1956
1957 if (params->ht_opmode >= 0) {
1958 sdata->vif.bss_conf.ht_operation_mode =
1959 (u16) params->ht_opmode;
1960 changed |= BSS_CHANGED_HT;
1961 }
1962
1963 if (params->p2p_ctwindow >= 0) {
1964 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1965 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1966 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1967 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1968 changed |= BSS_CHANGED_P2P_PS;
1969 }
1970
1971 if (params->p2p_opp_ps > 0) {
1972 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1973 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1974 changed |= BSS_CHANGED_P2P_PS;
1975 } else if (params->p2p_opp_ps == 0) {
1976 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1977 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1978 changed |= BSS_CHANGED_P2P_PS;
1979 }
1980
1981 ieee80211_bss_info_change_notify(sdata, changed);
1982
1983 return 0;
1984 }
1985
1986 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1987 struct net_device *dev,
1988 struct ieee80211_txq_params *params)
1989 {
1990 struct ieee80211_local *local = wiphy_priv(wiphy);
1991 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1992 struct ieee80211_tx_queue_params p;
1993
1994 if (!local->ops->conf_tx)
1995 return -EOPNOTSUPP;
1996
1997 if (local->hw.queues < IEEE80211_NUM_ACS)
1998 return -EOPNOTSUPP;
1999
2000 memset(&p, 0, sizeof(p));
2001 p.aifs = params->aifs;
2002 p.cw_max = params->cwmax;
2003 p.cw_min = params->cwmin;
2004 p.txop = params->txop;
2005
2006 /*
2007 * Setting tx queue params disables u-apsd because it's only
2008 * called in master mode.
2009 */
2010 p.uapsd = false;
2011
2012 sdata->tx_conf[params->ac] = p;
2013 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2014 wiphy_debug(local->hw.wiphy,
2015 "failed to set TX queue parameters for AC %d\n",
2016 params->ac);
2017 return -EINVAL;
2018 }
2019
2020 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2021
2022 return 0;
2023 }
2024
2025 #ifdef CONFIG_PM
2026 static int ieee80211_suspend(struct wiphy *wiphy,
2027 struct cfg80211_wowlan *wowlan)
2028 {
2029 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2030 }
2031
2032 static int ieee80211_resume(struct wiphy *wiphy)
2033 {
2034 return __ieee80211_resume(wiphy_priv(wiphy));
2035 }
2036 #else
2037 #define ieee80211_suspend NULL
2038 #define ieee80211_resume NULL
2039 #endif
2040
2041 static int ieee80211_scan(struct wiphy *wiphy,
2042 struct cfg80211_scan_request *req)
2043 {
2044 struct ieee80211_sub_if_data *sdata;
2045
2046 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2047
2048 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2049 case NL80211_IFTYPE_STATION:
2050 case NL80211_IFTYPE_ADHOC:
2051 case NL80211_IFTYPE_MESH_POINT:
2052 case NL80211_IFTYPE_P2P_CLIENT:
2053 case NL80211_IFTYPE_P2P_DEVICE:
2054 break;
2055 case NL80211_IFTYPE_P2P_GO:
2056 if (sdata->local->ops->hw_scan)
2057 break;
2058 /*
2059 * FIXME: implement NoA while scanning in software,
2060 * for now fall through to allow scanning only when
2061 * beaconing hasn't been configured yet
2062 */
2063 case NL80211_IFTYPE_AP:
2064 /*
2065 * If the scan has been forced (and the driver supports
2066 * forcing), don't care about being beaconing already.
2067 * This will create problems to the attached stations (e.g. all
2068 * the frames sent while scanning on other channel will be
2069 * lost)
2070 */
2071 if (sdata->u.ap.beacon &&
2072 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2073 !(req->flags & NL80211_SCAN_FLAG_AP)))
2074 return -EOPNOTSUPP;
2075 break;
2076 default:
2077 return -EOPNOTSUPP;
2078 }
2079
2080 return ieee80211_request_scan(sdata, req);
2081 }
2082
2083 static int
2084 ieee80211_sched_scan_start(struct wiphy *wiphy,
2085 struct net_device *dev,
2086 struct cfg80211_sched_scan_request *req)
2087 {
2088 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2089
2090 if (!sdata->local->ops->sched_scan_start)
2091 return -EOPNOTSUPP;
2092
2093 return ieee80211_request_sched_scan_start(sdata, req);
2094 }
2095
2096 static int
2097 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2098 {
2099 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2100
2101 if (!sdata->local->ops->sched_scan_stop)
2102 return -EOPNOTSUPP;
2103
2104 return ieee80211_request_sched_scan_stop(sdata);
2105 }
2106
2107 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2108 struct cfg80211_auth_request *req)
2109 {
2110 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2111 }
2112
2113 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2114 struct cfg80211_assoc_request *req)
2115 {
2116 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2117 }
2118
2119 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2120 struct cfg80211_deauth_request *req)
2121 {
2122 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2123 }
2124
2125 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2126 struct cfg80211_disassoc_request *req)
2127 {
2128 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2129 }
2130
2131 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2132 struct cfg80211_ibss_params *params)
2133 {
2134 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2135 }
2136
2137 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2138 {
2139 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2140 }
2141
2142 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2143 int rate[IEEE80211_NUM_BANDS])
2144 {
2145 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2146
2147 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2148 sizeof(int) * IEEE80211_NUM_BANDS);
2149
2150 return 0;
2151 }
2152
2153 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2154 {
2155 struct ieee80211_local *local = wiphy_priv(wiphy);
2156 int err;
2157
2158 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2159 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2160
2161 if (err)
2162 return err;
2163 }
2164
2165 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2166 err = drv_set_coverage_class(local, wiphy->coverage_class);
2167
2168 if (err)
2169 return err;
2170 }
2171
2172 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2173 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2174
2175 if (err)
2176 return err;
2177 }
2178
2179 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2180 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2181 return -EINVAL;
2182 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2183 }
2184 if (changed & WIPHY_PARAM_RETRY_LONG) {
2185 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2186 return -EINVAL;
2187 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2188 }
2189 if (changed &
2190 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2191 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2192
2193 return 0;
2194 }
2195
2196 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2197 struct wireless_dev *wdev,
2198 enum nl80211_tx_power_setting type, int mbm)
2199 {
2200 struct ieee80211_local *local = wiphy_priv(wiphy);
2201 struct ieee80211_sub_if_data *sdata;
2202
2203 if (wdev) {
2204 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2205
2206 switch (type) {
2207 case NL80211_TX_POWER_AUTOMATIC:
2208 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2209 break;
2210 case NL80211_TX_POWER_LIMITED:
2211 case NL80211_TX_POWER_FIXED:
2212 if (mbm < 0 || (mbm % 100))
2213 return -EOPNOTSUPP;
2214 sdata->user_power_level = MBM_TO_DBM(mbm);
2215 break;
2216 }
2217
2218 ieee80211_recalc_txpower(sdata);
2219
2220 return 0;
2221 }
2222
2223 switch (type) {
2224 case NL80211_TX_POWER_AUTOMATIC:
2225 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2226 break;
2227 case NL80211_TX_POWER_LIMITED:
2228 case NL80211_TX_POWER_FIXED:
2229 if (mbm < 0 || (mbm % 100))
2230 return -EOPNOTSUPP;
2231 local->user_power_level = MBM_TO_DBM(mbm);
2232 break;
2233 }
2234
2235 mutex_lock(&local->iflist_mtx);
2236 list_for_each_entry(sdata, &local->interfaces, list)
2237 sdata->user_power_level = local->user_power_level;
2238 list_for_each_entry(sdata, &local->interfaces, list)
2239 ieee80211_recalc_txpower(sdata);
2240 mutex_unlock(&local->iflist_mtx);
2241
2242 return 0;
2243 }
2244
2245 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2246 struct wireless_dev *wdev,
2247 int *dbm)
2248 {
2249 struct ieee80211_local *local = wiphy_priv(wiphy);
2250 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2251
2252 if (!local->use_chanctx)
2253 *dbm = local->hw.conf.power_level;
2254 else
2255 *dbm = sdata->vif.bss_conf.txpower;
2256
2257 return 0;
2258 }
2259
2260 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2261 const u8 *addr)
2262 {
2263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2264
2265 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2266
2267 return 0;
2268 }
2269
2270 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2271 {
2272 struct ieee80211_local *local = wiphy_priv(wiphy);
2273
2274 drv_rfkill_poll(local);
2275 }
2276
2277 #ifdef CONFIG_NL80211_TESTMODE
2278 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2279 {
2280 struct ieee80211_local *local = wiphy_priv(wiphy);
2281
2282 if (!local->ops->testmode_cmd)
2283 return -EOPNOTSUPP;
2284
2285 return local->ops->testmode_cmd(&local->hw, data, len);
2286 }
2287
2288 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2289 struct sk_buff *skb,
2290 struct netlink_callback *cb,
2291 void *data, int len)
2292 {
2293 struct ieee80211_local *local = wiphy_priv(wiphy);
2294
2295 if (!local->ops->testmode_dump)
2296 return -EOPNOTSUPP;
2297
2298 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2299 }
2300 #endif
2301
2302 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2303 enum ieee80211_smps_mode smps_mode)
2304 {
2305 const u8 *ap;
2306 enum ieee80211_smps_mode old_req;
2307 int err;
2308
2309 lockdep_assert_held(&sdata->u.mgd.mtx);
2310
2311 old_req = sdata->u.mgd.req_smps;
2312 sdata->u.mgd.req_smps = smps_mode;
2313
2314 if (old_req == smps_mode &&
2315 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2316 return 0;
2317
2318 /*
2319 * If not associated, or current association is not an HT
2320 * association, there's no need to do anything, just store
2321 * the new value until we associate.
2322 */
2323 if (!sdata->u.mgd.associated ||
2324 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2325 return 0;
2326
2327 ap = sdata->u.mgd.associated->bssid;
2328
2329 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2330 if (sdata->u.mgd.powersave)
2331 smps_mode = IEEE80211_SMPS_DYNAMIC;
2332 else
2333 smps_mode = IEEE80211_SMPS_OFF;
2334 }
2335
2336 /* send SM PS frame to AP */
2337 err = ieee80211_send_smps_action(sdata, smps_mode,
2338 ap, ap);
2339 if (err)
2340 sdata->u.mgd.req_smps = old_req;
2341
2342 return err;
2343 }
2344
2345 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2346 bool enabled, int timeout)
2347 {
2348 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2349 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2350
2351 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2352 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2353 return -EOPNOTSUPP;
2354
2355 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2356 return -EOPNOTSUPP;
2357
2358 if (enabled == sdata->u.mgd.powersave &&
2359 timeout == local->dynamic_ps_forced_timeout)
2360 return 0;
2361
2362 sdata->u.mgd.powersave = enabled;
2363 local->dynamic_ps_forced_timeout = timeout;
2364
2365 /* no change, but if automatic follow powersave */
2366 mutex_lock(&sdata->u.mgd.mtx);
2367 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2368 mutex_unlock(&sdata->u.mgd.mtx);
2369
2370 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2371 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2372
2373 ieee80211_recalc_ps(local, -1);
2374 ieee80211_recalc_ps_vif(sdata);
2375
2376 return 0;
2377 }
2378
2379 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2380 struct net_device *dev,
2381 s32 rssi_thold, u32 rssi_hyst)
2382 {
2383 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2384 struct ieee80211_vif *vif = &sdata->vif;
2385 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2386
2387 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2388 rssi_hyst == bss_conf->cqm_rssi_hyst)
2389 return 0;
2390
2391 bss_conf->cqm_rssi_thold = rssi_thold;
2392 bss_conf->cqm_rssi_hyst = rssi_hyst;
2393
2394 /* tell the driver upon association, unless already associated */
2395 if (sdata->u.mgd.associated &&
2396 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2397 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2398
2399 return 0;
2400 }
2401
2402 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2403 struct net_device *dev,
2404 const u8 *addr,
2405 const struct cfg80211_bitrate_mask *mask)
2406 {
2407 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2408 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2409 int i, ret;
2410
2411 if (!ieee80211_sdata_running(sdata))
2412 return -ENETDOWN;
2413
2414 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2415 ret = drv_set_bitrate_mask(local, sdata, mask);
2416 if (ret)
2417 return ret;
2418 }
2419
2420 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2421 struct ieee80211_supported_band *sband = wiphy->bands[i];
2422 int j;
2423
2424 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2425 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2426 sizeof(mask->control[i].mcs));
2427
2428 sdata->rc_has_mcs_mask[i] = false;
2429 if (!sband)
2430 continue;
2431
2432 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2433 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2434 sdata->rc_has_mcs_mask[i] = true;
2435 break;
2436 }
2437 }
2438
2439 return 0;
2440 }
2441
2442 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2443 struct ieee80211_sub_if_data *sdata,
2444 struct ieee80211_channel *channel,
2445 unsigned int duration, u64 *cookie,
2446 struct sk_buff *txskb,
2447 enum ieee80211_roc_type type)
2448 {
2449 struct ieee80211_roc_work *roc, *tmp;
2450 bool queued = false;
2451 int ret;
2452
2453 lockdep_assert_held(&local->mtx);
2454
2455 if (local->use_chanctx && !local->ops->remain_on_channel)
2456 return -EOPNOTSUPP;
2457
2458 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2459 if (!roc)
2460 return -ENOMEM;
2461
2462 roc->chan = channel;
2463 roc->duration = duration;
2464 roc->req_duration = duration;
2465 roc->frame = txskb;
2466 roc->type = type;
2467 roc->mgmt_tx_cookie = (unsigned long)txskb;
2468 roc->sdata = sdata;
2469 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2470 INIT_LIST_HEAD(&roc->dependents);
2471
2472 /* if there's one pending or we're scanning, queue this one */
2473 if (!list_empty(&local->roc_list) ||
2474 local->scanning || local->radar_detect_enabled)
2475 goto out_check_combine;
2476
2477 /* if not HW assist, just queue & schedule work */
2478 if (!local->ops->remain_on_channel) {
2479 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2480 goto out_queue;
2481 }
2482
2483 /* otherwise actually kick it off here (for error handling) */
2484
2485 /*
2486 * If the duration is zero, then the driver
2487 * wouldn't actually do anything. Set it to
2488 * 10 for now.
2489 *
2490 * TODO: cancel the off-channel operation
2491 * when we get the SKB's TX status and
2492 * the wait time was zero before.
2493 */
2494 if (!duration)
2495 duration = 10;
2496
2497 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2498 if (ret) {
2499 kfree(roc);
2500 return ret;
2501 }
2502
2503 roc->started = true;
2504 goto out_queue;
2505
2506 out_check_combine:
2507 list_for_each_entry(tmp, &local->roc_list, list) {
2508 if (tmp->chan != channel || tmp->sdata != sdata)
2509 continue;
2510
2511 /*
2512 * Extend this ROC if possible:
2513 *
2514 * If it hasn't started yet, just increase the duration
2515 * and add the new one to the list of dependents.
2516 * If the type of the new ROC has higher priority, modify the
2517 * type of the previous one to match that of the new one.
2518 */
2519 if (!tmp->started) {
2520 list_add_tail(&roc->list, &tmp->dependents);
2521 tmp->duration = max(tmp->duration, roc->duration);
2522 tmp->type = max(tmp->type, roc->type);
2523 queued = true;
2524 break;
2525 }
2526
2527 /* If it has already started, it's more difficult ... */
2528 if (local->ops->remain_on_channel) {
2529 unsigned long j = jiffies;
2530
2531 /*
2532 * In the offloaded ROC case, if it hasn't begun, add
2533 * this new one to the dependent list to be handled
2534 * when the master one begins. If it has begun,
2535 * check that there's still a minimum time left and
2536 * if so, start this one, transmitting the frame, but
2537 * add it to the list directly after this one with
2538 * a reduced time so we'll ask the driver to execute
2539 * it right after finishing the previous one, in the
2540 * hope that it'll also be executed right afterwards,
2541 * effectively extending the old one.
2542 * If there's no minimum time left, just add it to the
2543 * normal list.
2544 * TODO: the ROC type is ignored here, assuming that it
2545 * is better to immediately use the current ROC.
2546 */
2547 if (!tmp->hw_begun) {
2548 list_add_tail(&roc->list, &tmp->dependents);
2549 queued = true;
2550 break;
2551 }
2552
2553 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2554 tmp->hw_start_time +
2555 msecs_to_jiffies(tmp->duration))) {
2556 int new_dur;
2557
2558 ieee80211_handle_roc_started(roc);
2559
2560 new_dur = roc->duration -
2561 jiffies_to_msecs(tmp->hw_start_time +
2562 msecs_to_jiffies(
2563 tmp->duration) -
2564 j);
2565
2566 if (new_dur > 0) {
2567 /* add right after tmp */
2568 list_add(&roc->list, &tmp->list);
2569 } else {
2570 list_add_tail(&roc->list,
2571 &tmp->dependents);
2572 }
2573 queued = true;
2574 }
2575 } else if (del_timer_sync(&tmp->work.timer)) {
2576 unsigned long new_end;
2577
2578 /*
2579 * In the software ROC case, cancel the timer, if
2580 * that fails then the finish work is already
2581 * queued/pending and thus we queue the new ROC
2582 * normally, if that succeeds then we can extend
2583 * the timer duration and TX the frame (if any.)
2584 */
2585
2586 list_add_tail(&roc->list, &tmp->dependents);
2587 queued = true;
2588
2589 new_end = jiffies + msecs_to_jiffies(roc->duration);
2590
2591 /* ok, it was started & we canceled timer */
2592 if (time_after(new_end, tmp->work.timer.expires))
2593 mod_timer(&tmp->work.timer, new_end);
2594 else
2595 add_timer(&tmp->work.timer);
2596
2597 ieee80211_handle_roc_started(roc);
2598 }
2599 break;
2600 }
2601
2602 out_queue:
2603 if (!queued)
2604 list_add_tail(&roc->list, &local->roc_list);
2605
2606 /*
2607 * cookie is either the roc cookie (for normal roc)
2608 * or the SKB (for mgmt TX)
2609 */
2610 if (!txskb) {
2611 /* local->mtx protects this */
2612 local->roc_cookie_counter++;
2613 roc->cookie = local->roc_cookie_counter;
2614 /* wow, you wrapped 64 bits ... more likely a bug */
2615 if (WARN_ON(roc->cookie == 0)) {
2616 roc->cookie = 1;
2617 local->roc_cookie_counter++;
2618 }
2619 *cookie = roc->cookie;
2620 } else {
2621 *cookie = (unsigned long)txskb;
2622 }
2623
2624 return 0;
2625 }
2626
2627 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2628 struct wireless_dev *wdev,
2629 struct ieee80211_channel *chan,
2630 unsigned int duration,
2631 u64 *cookie)
2632 {
2633 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2634 struct ieee80211_local *local = sdata->local;
2635 int ret;
2636
2637 mutex_lock(&local->mtx);
2638 ret = ieee80211_start_roc_work(local, sdata, chan,
2639 duration, cookie, NULL,
2640 IEEE80211_ROC_TYPE_NORMAL);
2641 mutex_unlock(&local->mtx);
2642
2643 return ret;
2644 }
2645
2646 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2647 u64 cookie, bool mgmt_tx)
2648 {
2649 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2650 int ret;
2651
2652 mutex_lock(&local->mtx);
2653 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2654 struct ieee80211_roc_work *dep, *tmp2;
2655
2656 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2657 if (!mgmt_tx && dep->cookie != cookie)
2658 continue;
2659 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2660 continue;
2661 /* found dependent item -- just remove it */
2662 list_del(&dep->list);
2663 mutex_unlock(&local->mtx);
2664
2665 ieee80211_roc_notify_destroy(dep, true);
2666 return 0;
2667 }
2668
2669 if (!mgmt_tx && roc->cookie != cookie)
2670 continue;
2671 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2672 continue;
2673
2674 found = roc;
2675 break;
2676 }
2677
2678 if (!found) {
2679 mutex_unlock(&local->mtx);
2680 return -ENOENT;
2681 }
2682
2683 /*
2684 * We found the item to cancel, so do that. Note that it
2685 * may have dependents, which we also cancel (and send
2686 * the expired signal for.) Not doing so would be quite
2687 * tricky here, but we may need to fix it later.
2688 */
2689
2690 if (local->ops->remain_on_channel) {
2691 if (found->started) {
2692 ret = drv_cancel_remain_on_channel(local);
2693 if (WARN_ON_ONCE(ret)) {
2694 mutex_unlock(&local->mtx);
2695 return ret;
2696 }
2697 }
2698
2699 list_del(&found->list);
2700
2701 if (found->started)
2702 ieee80211_start_next_roc(local);
2703 mutex_unlock(&local->mtx);
2704
2705 ieee80211_roc_notify_destroy(found, true);
2706 } else {
2707 /* work may be pending so use it all the time */
2708 found->abort = true;
2709 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2710
2711 mutex_unlock(&local->mtx);
2712
2713 /* work will clean up etc */
2714 flush_delayed_work(&found->work);
2715 WARN_ON(!found->to_be_freed);
2716 kfree(found);
2717 }
2718
2719 return 0;
2720 }
2721
2722 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2723 struct wireless_dev *wdev,
2724 u64 cookie)
2725 {
2726 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2727 struct ieee80211_local *local = sdata->local;
2728
2729 return ieee80211_cancel_roc(local, cookie, false);
2730 }
2731
2732 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2733 struct net_device *dev,
2734 struct cfg80211_chan_def *chandef)
2735 {
2736 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2737 struct ieee80211_local *local = sdata->local;
2738 unsigned long timeout;
2739 int err;
2740
2741 if (!list_empty(&local->roc_list) || local->scanning)
2742 return -EBUSY;
2743
2744 /* whatever, but channel contexts should not complain about that one */
2745 sdata->smps_mode = IEEE80211_SMPS_OFF;
2746 sdata->needed_rx_chains = local->rx_chains;
2747 sdata->radar_required = true;
2748
2749 mutex_lock(&local->iflist_mtx);
2750 err = ieee80211_vif_use_channel(sdata, chandef,
2751 IEEE80211_CHANCTX_SHARED);
2752 mutex_unlock(&local->iflist_mtx);
2753 if (err)
2754 return err;
2755
2756 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2757 ieee80211_queue_delayed_work(&sdata->local->hw,
2758 &sdata->dfs_cac_timer_work, timeout);
2759
2760 return 0;
2761 }
2762
2763 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2764 struct ieee80211_channel *chan, bool offchan,
2765 unsigned int wait, const u8 *buf, size_t len,
2766 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2767 {
2768 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2769 struct ieee80211_local *local = sdata->local;
2770 struct sk_buff *skb;
2771 struct sta_info *sta;
2772 const struct ieee80211_mgmt *mgmt = (void *)buf;
2773 bool need_offchan = false;
2774 u32 flags;
2775 int ret;
2776
2777 if (dont_wait_for_ack)
2778 flags = IEEE80211_TX_CTL_NO_ACK;
2779 else
2780 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2781 IEEE80211_TX_CTL_REQ_TX_STATUS;
2782
2783 if (no_cck)
2784 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2785
2786 switch (sdata->vif.type) {
2787 case NL80211_IFTYPE_ADHOC:
2788 if (!sdata->vif.bss_conf.ibss_joined)
2789 need_offchan = true;
2790 /* fall through */
2791 #ifdef CONFIG_MAC80211_MESH
2792 case NL80211_IFTYPE_MESH_POINT:
2793 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2794 !sdata->u.mesh.mesh_id_len)
2795 need_offchan = true;
2796 /* fall through */
2797 #endif
2798 case NL80211_IFTYPE_AP:
2799 case NL80211_IFTYPE_AP_VLAN:
2800 case NL80211_IFTYPE_P2P_GO:
2801 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2802 !ieee80211_vif_is_mesh(&sdata->vif) &&
2803 !rcu_access_pointer(sdata->bss->beacon))
2804 need_offchan = true;
2805 if (!ieee80211_is_action(mgmt->frame_control) ||
2806 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2807 break;
2808 rcu_read_lock();
2809 sta = sta_info_get(sdata, mgmt->da);
2810 rcu_read_unlock();
2811 if (!sta)
2812 return -ENOLINK;
2813 break;
2814 case NL80211_IFTYPE_STATION:
2815 case NL80211_IFTYPE_P2P_CLIENT:
2816 if (!sdata->u.mgd.associated)
2817 need_offchan = true;
2818 break;
2819 case NL80211_IFTYPE_P2P_DEVICE:
2820 need_offchan = true;
2821 break;
2822 default:
2823 return -EOPNOTSUPP;
2824 }
2825
2826 mutex_lock(&local->mtx);
2827
2828 /* Check if the operating channel is the requested channel */
2829 if (!need_offchan) {
2830 struct ieee80211_chanctx_conf *chanctx_conf;
2831
2832 rcu_read_lock();
2833 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2834
2835 if (chanctx_conf)
2836 need_offchan = chan != chanctx_conf->def.chan;
2837 else
2838 need_offchan = true;
2839 rcu_read_unlock();
2840 }
2841
2842 if (need_offchan && !offchan) {
2843 ret = -EBUSY;
2844 goto out_unlock;
2845 }
2846
2847 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2848 if (!skb) {
2849 ret = -ENOMEM;
2850 goto out_unlock;
2851 }
2852 skb_reserve(skb, local->hw.extra_tx_headroom);
2853
2854 memcpy(skb_put(skb, len), buf, len);
2855
2856 IEEE80211_SKB_CB(skb)->flags = flags;
2857
2858 skb->dev = sdata->dev;
2859
2860 if (!need_offchan) {
2861 *cookie = (unsigned long) skb;
2862 ieee80211_tx_skb(sdata, skb);
2863 ret = 0;
2864 goto out_unlock;
2865 }
2866
2867 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2868 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2869 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2870 IEEE80211_SKB_CB(skb)->hw_queue =
2871 local->hw.offchannel_tx_hw_queue;
2872
2873 /* This will handle all kinds of coalescing and immediate TX */
2874 ret = ieee80211_start_roc_work(local, sdata, chan,
2875 wait, cookie, skb,
2876 IEEE80211_ROC_TYPE_MGMT_TX);
2877 if (ret)
2878 kfree_skb(skb);
2879 out_unlock:
2880 mutex_unlock(&local->mtx);
2881 return ret;
2882 }
2883
2884 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2885 struct wireless_dev *wdev,
2886 u64 cookie)
2887 {
2888 struct ieee80211_local *local = wiphy_priv(wiphy);
2889
2890 return ieee80211_cancel_roc(local, cookie, true);
2891 }
2892
2893 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2894 struct wireless_dev *wdev,
2895 u16 frame_type, bool reg)
2896 {
2897 struct ieee80211_local *local = wiphy_priv(wiphy);
2898 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2899
2900 switch (frame_type) {
2901 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2902 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2903 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2904
2905 if (reg)
2906 ifibss->auth_frame_registrations++;
2907 else
2908 ifibss->auth_frame_registrations--;
2909 }
2910 break;
2911 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2912 if (reg)
2913 local->probe_req_reg++;
2914 else
2915 local->probe_req_reg--;
2916
2917 if (!local->open_count)
2918 break;
2919
2920 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2921 break;
2922 default:
2923 break;
2924 }
2925 }
2926
2927 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2928 {
2929 struct ieee80211_local *local = wiphy_priv(wiphy);
2930
2931 if (local->started)
2932 return -EOPNOTSUPP;
2933
2934 return drv_set_antenna(local, tx_ant, rx_ant);
2935 }
2936
2937 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2938 {
2939 struct ieee80211_local *local = wiphy_priv(wiphy);
2940
2941 return drv_get_antenna(local, tx_ant, rx_ant);
2942 }
2943
2944 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2945 {
2946 struct ieee80211_local *local = wiphy_priv(wiphy);
2947
2948 return drv_set_ringparam(local, tx, rx);
2949 }
2950
2951 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2952 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2953 {
2954 struct ieee80211_local *local = wiphy_priv(wiphy);
2955
2956 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2957 }
2958
2959 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2960 struct net_device *dev,
2961 struct cfg80211_gtk_rekey_data *data)
2962 {
2963 struct ieee80211_local *local = wiphy_priv(wiphy);
2964 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2965
2966 if (!local->ops->set_rekey_data)
2967 return -EOPNOTSUPP;
2968
2969 drv_set_rekey_data(local, sdata, data);
2970
2971 return 0;
2972 }
2973
2974 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2975 {
2976 u8 *pos = (void *)skb_put(skb, 7);
2977
2978 *pos++ = WLAN_EID_EXT_CAPABILITY;
2979 *pos++ = 5; /* len */
2980 *pos++ = 0x0;
2981 *pos++ = 0x0;
2982 *pos++ = 0x0;
2983 *pos++ = 0x0;
2984 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2985 }
2986
2987 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2988 {
2989 struct ieee80211_local *local = sdata->local;
2990 u16 capab;
2991
2992 capab = 0;
2993 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2994 return capab;
2995
2996 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2997 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2998 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2999 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3000
3001 return capab;
3002 }
3003
3004 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3005 u8 *peer, u8 *bssid)
3006 {
3007 struct ieee80211_tdls_lnkie *lnkid;
3008
3009 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3010
3011 lnkid->ie_type = WLAN_EID_LINK_ID;
3012 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3013
3014 memcpy(lnkid->bssid, bssid, ETH_ALEN);
3015 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3016 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3017 }
3018
3019 static int
3020 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3021 u8 *peer, u8 action_code, u8 dialog_token,
3022 u16 status_code, struct sk_buff *skb)
3023 {
3024 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3025 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3026 struct ieee80211_tdls_data *tf;
3027
3028 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3029
3030 memcpy(tf->da, peer, ETH_ALEN);
3031 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3032 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3033 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3034
3035 switch (action_code) {
3036 case WLAN_TDLS_SETUP_REQUEST:
3037 tf->category = WLAN_CATEGORY_TDLS;
3038 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3039
3040 skb_put(skb, sizeof(tf->u.setup_req));
3041 tf->u.setup_req.dialog_token = dialog_token;
3042 tf->u.setup_req.capability =
3043 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3044
3045 ieee80211_add_srates_ie(sdata, skb, false, band);
3046 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3047 ieee80211_tdls_add_ext_capab(skb);
3048 break;
3049 case WLAN_TDLS_SETUP_RESPONSE:
3050 tf->category = WLAN_CATEGORY_TDLS;
3051 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3052
3053 skb_put(skb, sizeof(tf->u.setup_resp));
3054 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3055 tf->u.setup_resp.dialog_token = dialog_token;
3056 tf->u.setup_resp.capability =
3057 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3058
3059 ieee80211_add_srates_ie(sdata, skb, false, band);
3060 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3061 ieee80211_tdls_add_ext_capab(skb);
3062 break;
3063 case WLAN_TDLS_SETUP_CONFIRM:
3064 tf->category = WLAN_CATEGORY_TDLS;
3065 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3066
3067 skb_put(skb, sizeof(tf->u.setup_cfm));
3068 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3069 tf->u.setup_cfm.dialog_token = dialog_token;
3070 break;
3071 case WLAN_TDLS_TEARDOWN:
3072 tf->category = WLAN_CATEGORY_TDLS;
3073 tf->action_code = WLAN_TDLS_TEARDOWN;
3074
3075 skb_put(skb, sizeof(tf->u.teardown));
3076 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3077 break;
3078 case WLAN_TDLS_DISCOVERY_REQUEST:
3079 tf->category = WLAN_CATEGORY_TDLS;
3080 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3081
3082 skb_put(skb, sizeof(tf->u.discover_req));
3083 tf->u.discover_req.dialog_token = dialog_token;
3084 break;
3085 default:
3086 return -EINVAL;
3087 }
3088
3089 return 0;
3090 }
3091
3092 static int
3093 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3094 u8 *peer, u8 action_code, u8 dialog_token,
3095 u16 status_code, struct sk_buff *skb)
3096 {
3097 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3098 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3099 struct ieee80211_mgmt *mgmt;
3100
3101 mgmt = (void *)skb_put(skb, 24);
3102 memset(mgmt, 0, 24);
3103 memcpy(mgmt->da, peer, ETH_ALEN);
3104 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3105 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3106
3107 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3108 IEEE80211_STYPE_ACTION);
3109
3110 switch (action_code) {
3111 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3112 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3113 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3114 mgmt->u.action.u.tdls_discover_resp.action_code =
3115 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3116 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3117 dialog_token;
3118 mgmt->u.action.u.tdls_discover_resp.capability =
3119 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3120
3121 ieee80211_add_srates_ie(sdata, skb, false, band);
3122 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3123 ieee80211_tdls_add_ext_capab(skb);
3124 break;
3125 default:
3126 return -EINVAL;
3127 }
3128
3129 return 0;
3130 }
3131
3132 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3133 u8 *peer, u8 action_code, u8 dialog_token,
3134 u16 status_code, const u8 *extra_ies,
3135 size_t extra_ies_len)
3136 {
3137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3138 struct ieee80211_local *local = sdata->local;
3139 struct sk_buff *skb = NULL;
3140 bool send_direct;
3141 int ret;
3142
3143 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3144 return -ENOTSUPP;
3145
3146 /* make sure we are in managed mode, and associated */
3147 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3148 !sdata->u.mgd.associated)
3149 return -EINVAL;
3150
3151 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3152 action_code, peer);
3153
3154 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3155 max(sizeof(struct ieee80211_mgmt),
3156 sizeof(struct ieee80211_tdls_data)) +
3157 50 + /* supported rates */
3158 7 + /* ext capab */
3159 extra_ies_len +
3160 sizeof(struct ieee80211_tdls_lnkie));
3161 if (!skb)
3162 return -ENOMEM;
3163
3164 skb_reserve(skb, local->hw.extra_tx_headroom);
3165
3166 switch (action_code) {
3167 case WLAN_TDLS_SETUP_REQUEST:
3168 case WLAN_TDLS_SETUP_RESPONSE:
3169 case WLAN_TDLS_SETUP_CONFIRM:
3170 case WLAN_TDLS_TEARDOWN:
3171 case WLAN_TDLS_DISCOVERY_REQUEST:
3172 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3173 action_code, dialog_token,
3174 status_code, skb);
3175 send_direct = false;
3176 break;
3177 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3178 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3179 dialog_token, status_code,
3180 skb);
3181 send_direct = true;
3182 break;
3183 default:
3184 ret = -ENOTSUPP;
3185 break;
3186 }
3187
3188 if (ret < 0)
3189 goto fail;
3190
3191 if (extra_ies_len)
3192 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3193
3194 /* the TDLS link IE is always added last */
3195 switch (action_code) {
3196 case WLAN_TDLS_SETUP_REQUEST:
3197 case WLAN_TDLS_SETUP_CONFIRM:
3198 case WLAN_TDLS_TEARDOWN:
3199 case WLAN_TDLS_DISCOVERY_REQUEST:
3200 /* we are the initiator */
3201 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3202 sdata->u.mgd.bssid);
3203 break;
3204 case WLAN_TDLS_SETUP_RESPONSE:
3205 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3206 /* we are the responder */
3207 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3208 sdata->u.mgd.bssid);
3209 break;
3210 default:
3211 ret = -ENOTSUPP;
3212 goto fail;
3213 }
3214
3215 if (send_direct) {
3216 ieee80211_tx_skb(sdata, skb);
3217 return 0;
3218 }
3219
3220 /*
3221 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3222 * we should default to AC_VI.
3223 */
3224 switch (action_code) {
3225 case WLAN_TDLS_SETUP_REQUEST:
3226 case WLAN_TDLS_SETUP_RESPONSE:
3227 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3228 skb->priority = 2;
3229 break;
3230 default:
3231 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3232 skb->priority = 5;
3233 break;
3234 }
3235
3236 /* disable bottom halves when entering the Tx path */
3237 local_bh_disable();
3238 ret = ieee80211_subif_start_xmit(skb, dev);
3239 local_bh_enable();
3240
3241 return ret;
3242
3243 fail:
3244 dev_kfree_skb(skb);
3245 return ret;
3246 }
3247
3248 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3249 u8 *peer, enum nl80211_tdls_operation oper)
3250 {
3251 struct sta_info *sta;
3252 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3253
3254 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3255 return -ENOTSUPP;
3256
3257 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3258 return -EINVAL;
3259
3260 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3261
3262 switch (oper) {
3263 case NL80211_TDLS_ENABLE_LINK:
3264 rcu_read_lock();
3265 sta = sta_info_get(sdata, peer);
3266 if (!sta) {
3267 rcu_read_unlock();
3268 return -ENOLINK;
3269 }
3270
3271 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3272 rcu_read_unlock();
3273 break;
3274 case NL80211_TDLS_DISABLE_LINK:
3275 return sta_info_destroy_addr(sdata, peer);
3276 case NL80211_TDLS_TEARDOWN:
3277 case NL80211_TDLS_SETUP:
3278 case NL80211_TDLS_DISCOVERY_REQ:
3279 /* We don't support in-driver setup/teardown/discovery */
3280 return -ENOTSUPP;
3281 default:
3282 return -ENOTSUPP;
3283 }
3284
3285 return 0;
3286 }
3287
3288 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3289 const u8 *peer, u64 *cookie)
3290 {
3291 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3292 struct ieee80211_local *local = sdata->local;
3293 struct ieee80211_qos_hdr *nullfunc;
3294 struct sk_buff *skb;
3295 int size = sizeof(*nullfunc);
3296 __le16 fc;
3297 bool qos;
3298 struct ieee80211_tx_info *info;
3299 struct sta_info *sta;
3300 struct ieee80211_chanctx_conf *chanctx_conf;
3301 enum ieee80211_band band;
3302
3303 rcu_read_lock();
3304 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3305 if (WARN_ON(!chanctx_conf)) {
3306 rcu_read_unlock();
3307 return -EINVAL;
3308 }
3309 band = chanctx_conf->def.chan->band;
3310 sta = sta_info_get(sdata, peer);
3311 if (sta) {
3312 qos = test_sta_flag(sta, WLAN_STA_WME);
3313 } else {
3314 rcu_read_unlock();
3315 return -ENOLINK;
3316 }
3317
3318 if (qos) {
3319 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3320 IEEE80211_STYPE_QOS_NULLFUNC |
3321 IEEE80211_FCTL_FROMDS);
3322 } else {
3323 size -= 2;
3324 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3325 IEEE80211_STYPE_NULLFUNC |
3326 IEEE80211_FCTL_FROMDS);
3327 }
3328
3329 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3330 if (!skb) {
3331 rcu_read_unlock();
3332 return -ENOMEM;
3333 }
3334
3335 skb->dev = dev;
3336
3337 skb_reserve(skb, local->hw.extra_tx_headroom);
3338
3339 nullfunc = (void *) skb_put(skb, size);
3340 nullfunc->frame_control = fc;
3341 nullfunc->duration_id = 0;
3342 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3343 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3344 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3345 nullfunc->seq_ctrl = 0;
3346
3347 info = IEEE80211_SKB_CB(skb);
3348
3349 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3350 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3351
3352 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3353 skb->priority = 7;
3354 if (qos)
3355 nullfunc->qos_ctrl = cpu_to_le16(7);
3356
3357 local_bh_disable();
3358 ieee80211_xmit(sdata, skb, band);
3359 local_bh_enable();
3360 rcu_read_unlock();
3361
3362 *cookie = (unsigned long) skb;
3363 return 0;
3364 }
3365
3366 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3367 struct wireless_dev *wdev,
3368 struct cfg80211_chan_def *chandef)
3369 {
3370 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3371 struct ieee80211_local *local = wiphy_priv(wiphy);
3372 struct ieee80211_chanctx_conf *chanctx_conf;
3373 int ret = -ENODATA;
3374
3375 rcu_read_lock();
3376 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3377 if (chanctx_conf) {
3378 *chandef = chanctx_conf->def;
3379 ret = 0;
3380 } else if (local->open_count > 0 &&
3381 local->open_count == local->monitors &&
3382 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3383 if (local->use_chanctx)
3384 *chandef = local->monitor_chandef;
3385 else
3386 *chandef = local->_oper_chandef;
3387 ret = 0;
3388 }
3389 rcu_read_unlock();
3390
3391 return ret;
3392 }
3393
3394 #ifdef CONFIG_PM
3395 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3396 {
3397 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3398 }
3399 #endif
3400
3401 struct cfg80211_ops mac80211_config_ops = {
3402 .add_virtual_intf = ieee80211_add_iface,
3403 .del_virtual_intf = ieee80211_del_iface,
3404 .change_virtual_intf = ieee80211_change_iface,
3405 .start_p2p_device = ieee80211_start_p2p_device,
3406 .stop_p2p_device = ieee80211_stop_p2p_device,
3407 .add_key = ieee80211_add_key,
3408 .del_key = ieee80211_del_key,
3409 .get_key = ieee80211_get_key,
3410 .set_default_key = ieee80211_config_default_key,
3411 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3412 .start_ap = ieee80211_start_ap,
3413 .change_beacon = ieee80211_change_beacon,
3414 .stop_ap = ieee80211_stop_ap,
3415 .add_station = ieee80211_add_station,
3416 .del_station = ieee80211_del_station,
3417 .change_station = ieee80211_change_station,
3418 .get_station = ieee80211_get_station,
3419 .dump_station = ieee80211_dump_station,
3420 .dump_survey = ieee80211_dump_survey,
3421 #ifdef CONFIG_MAC80211_MESH
3422 .add_mpath = ieee80211_add_mpath,
3423 .del_mpath = ieee80211_del_mpath,
3424 .change_mpath = ieee80211_change_mpath,
3425 .get_mpath = ieee80211_get_mpath,
3426 .dump_mpath = ieee80211_dump_mpath,
3427 .update_mesh_config = ieee80211_update_mesh_config,
3428 .get_mesh_config = ieee80211_get_mesh_config,
3429 .join_mesh = ieee80211_join_mesh,
3430 .leave_mesh = ieee80211_leave_mesh,
3431 #endif
3432 .change_bss = ieee80211_change_bss,
3433 .set_txq_params = ieee80211_set_txq_params,
3434 .set_monitor_channel = ieee80211_set_monitor_channel,
3435 .suspend = ieee80211_suspend,
3436 .resume = ieee80211_resume,
3437 .scan = ieee80211_scan,
3438 .sched_scan_start = ieee80211_sched_scan_start,
3439 .sched_scan_stop = ieee80211_sched_scan_stop,
3440 .auth = ieee80211_auth,
3441 .assoc = ieee80211_assoc,
3442 .deauth = ieee80211_deauth,
3443 .disassoc = ieee80211_disassoc,
3444 .join_ibss = ieee80211_join_ibss,
3445 .leave_ibss = ieee80211_leave_ibss,
3446 .set_mcast_rate = ieee80211_set_mcast_rate,
3447 .set_wiphy_params = ieee80211_set_wiphy_params,
3448 .set_tx_power = ieee80211_set_tx_power,
3449 .get_tx_power = ieee80211_get_tx_power,
3450 .set_wds_peer = ieee80211_set_wds_peer,
3451 .rfkill_poll = ieee80211_rfkill_poll,
3452 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3453 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3454 .set_power_mgmt = ieee80211_set_power_mgmt,
3455 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3456 .remain_on_channel = ieee80211_remain_on_channel,
3457 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3458 .mgmt_tx = ieee80211_mgmt_tx,
3459 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3460 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3461 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3462 .set_antenna = ieee80211_set_antenna,
3463 .get_antenna = ieee80211_get_antenna,
3464 .set_ringparam = ieee80211_set_ringparam,
3465 .get_ringparam = ieee80211_get_ringparam,
3466 .set_rekey_data = ieee80211_set_rekey_data,
3467 .tdls_oper = ieee80211_tdls_oper,
3468 .tdls_mgmt = ieee80211_tdls_mgmt,
3469 .probe_client = ieee80211_probe_client,
3470 .set_noack_map = ieee80211_set_noack_map,
3471 #ifdef CONFIG_PM
3472 .set_wakeup = ieee80211_set_wakeup,
3473 #endif
3474 .get_et_sset_count = ieee80211_get_et_sset_count,
3475 .get_et_stats = ieee80211_get_et_stats,
3476 .get_et_strings = ieee80211_get_et_strings,
3477 .get_channel = ieee80211_cfg_get_channel,
3478 .start_radar_detection = ieee80211_start_radar_detection,
3479 };
kernel source for telekom puls (alcatel/mediatek)