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tuntap: switch to use rtnl_dereference()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / mac80211 / cfg.c
blob47e0aca614b78462e876cbdb5cbd31695af630c5
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24 const char *name,
25 enum nl80211_iftype type,
26 u32 *flags,
27 struct vif_params *params)
28 {
29 struct ieee80211_local *local = wiphy_priv(wiphy);
30 struct wireless_dev *wdev;
31 struct ieee80211_sub_if_data *sdata;
32 int err;
33
34 err = ieee80211_if_add(local, name, &wdev, type, params);
35 if (err)
36 return ERR_PTR(err);
37
38 if (type == NL80211_IFTYPE_MONITOR && flags) {
39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40 sdata->u.mntr_flags = *flags;
41 }
42
43 return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50 return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54 struct net_device *dev,
55 enum nl80211_iftype type, u32 *flags,
56 struct vif_params *params)
57 {
58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59 int ret;
60
61 ret = ieee80211_if_change_type(sdata, type);
62 if (ret)
63 return ret;
64
65 if (type == NL80211_IFTYPE_AP_VLAN &&
66 params && params->use_4addr == 0)
67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68 else if (type == NL80211_IFTYPE_STATION &&
69 params && params->use_4addr >= 0)
70 sdata->u.mgd.use_4addr = params->use_4addr;
71
72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73 struct ieee80211_local *local = sdata->local;
74
75 if (ieee80211_sdata_running(sdata)) {
76 /*
77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
78 * changed while the interface is up.
79 * Else we would need to add a lot of cruft
80 * to update everything:
81 * cooked_mntrs, monitor and all fif_* counters
82 * reconfigure hardware
83 */
84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
86 return -EBUSY;
87
88 ieee80211_adjust_monitor_flags(sdata, -1);
89 sdata->u.mntr_flags = *flags;
90 ieee80211_adjust_monitor_flags(sdata, 1);
91
92 ieee80211_configure_filter(local);
93 } else {
94 /*
95 * Because the interface is down, ieee80211_do_stop
96 * and ieee80211_do_open take care of "everything"
97 * mentioned in the comment above.
98 */
99 sdata->u.mntr_flags = *flags;
100 }
101 }
102
103 return 0;
104 }
105
106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
107 struct wireless_dev *wdev)
108 {
109 return ieee80211_do_open(wdev, true);
110 }
111
112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
116 }
117
118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
119 struct net_device *dev,
120 u16 noack_map)
121 {
122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
123
124 sdata->noack_map = noack_map;
125 return 0;
126 }
127
128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
129 u8 key_idx, bool pairwise, const u8 *mac_addr,
130 struct key_params *params)
131 {
132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
133 struct sta_info *sta = NULL;
134 struct ieee80211_key *key;
135 int err;
136
137 if (!ieee80211_sdata_running(sdata))
138 return -ENETDOWN;
139
140 /* reject WEP and TKIP keys if WEP failed to initialize */
141 switch (params->cipher) {
142 case WLAN_CIPHER_SUITE_WEP40:
143 case WLAN_CIPHER_SUITE_TKIP:
144 case WLAN_CIPHER_SUITE_WEP104:
145 if (IS_ERR(sdata->local->wep_tx_tfm))
146 return -EINVAL;
147 break;
148 default:
149 break;
150 }
151
152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
153 params->key, params->seq_len, params->seq);
154 if (IS_ERR(key))
155 return PTR_ERR(key);
156
157 if (pairwise)
158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
159
160 mutex_lock(&sdata->local->sta_mtx);
161
162 if (mac_addr) {
163 if (ieee80211_vif_is_mesh(&sdata->vif))
164 sta = sta_info_get(sdata, mac_addr);
165 else
166 sta = sta_info_get_bss(sdata, mac_addr);
167 if (!sta) {
168 ieee80211_key_free(sdata->local, key);
169 err = -ENOENT;
170 goto out_unlock;
171 }
172 }
173
174 switch (sdata->vif.type) {
175 case NL80211_IFTYPE_STATION:
176 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
177 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
178 break;
179 case NL80211_IFTYPE_AP:
180 case NL80211_IFTYPE_AP_VLAN:
181 /* Keys without a station are used for TX only */
182 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
183 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
184 break;
185 case NL80211_IFTYPE_ADHOC:
186 /* no MFP (yet) */
187 break;
188 case NL80211_IFTYPE_MESH_POINT:
189 #ifdef CONFIG_MAC80211_MESH
190 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
191 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
192 break;
193 #endif
194 case NL80211_IFTYPE_WDS:
195 case NL80211_IFTYPE_MONITOR:
196 case NL80211_IFTYPE_P2P_DEVICE:
197 case NL80211_IFTYPE_UNSPECIFIED:
198 case NUM_NL80211_IFTYPES:
199 case NL80211_IFTYPE_P2P_CLIENT:
200 case NL80211_IFTYPE_P2P_GO:
201 /* shouldn't happen */
202 WARN_ON_ONCE(1);
203 break;
204 }
205
206 err = ieee80211_key_link(key, sdata, sta);
207 if (err)
208 ieee80211_key_free(sdata->local, key);
209
210 out_unlock:
211 mutex_unlock(&sdata->local->sta_mtx);
212
213 return err;
214 }
215
216 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
217 u8 key_idx, bool pairwise, const u8 *mac_addr)
218 {
219 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
220 struct ieee80211_local *local = sdata->local;
221 struct sta_info *sta;
222 struct ieee80211_key *key = NULL;
223 int ret;
224
225 mutex_lock(&local->sta_mtx);
226 mutex_lock(&local->key_mtx);
227
228 if (mac_addr) {
229 ret = -ENOENT;
230
231 sta = sta_info_get_bss(sdata, mac_addr);
232 if (!sta)
233 goto out_unlock;
234
235 if (pairwise)
236 key = key_mtx_dereference(local, sta->ptk);
237 else
238 key = key_mtx_dereference(local, sta->gtk[key_idx]);
239 } else
240 key = key_mtx_dereference(local, sdata->keys[key_idx]);
241
242 if (!key) {
243 ret = -ENOENT;
244 goto out_unlock;
245 }
246
247 __ieee80211_key_free(key);
248
249 ret = 0;
250 out_unlock:
251 mutex_unlock(&local->key_mtx);
252 mutex_unlock(&local->sta_mtx);
253
254 return ret;
255 }
256
257 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
258 u8 key_idx, bool pairwise, const u8 *mac_addr,
259 void *cookie,
260 void (*callback)(void *cookie,
261 struct key_params *params))
262 {
263 struct ieee80211_sub_if_data *sdata;
264 struct sta_info *sta = NULL;
265 u8 seq[6] = {0};
266 struct key_params params;
267 struct ieee80211_key *key = NULL;
268 u64 pn64;
269 u32 iv32;
270 u16 iv16;
271 int err = -ENOENT;
272
273 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
274
275 rcu_read_lock();
276
277 if (mac_addr) {
278 sta = sta_info_get_bss(sdata, mac_addr);
279 if (!sta)
280 goto out;
281
282 if (pairwise)
283 key = rcu_dereference(sta->ptk);
284 else if (key_idx < NUM_DEFAULT_KEYS)
285 key = rcu_dereference(sta->gtk[key_idx]);
286 } else
287 key = rcu_dereference(sdata->keys[key_idx]);
288
289 if (!key)
290 goto out;
291
292 memset(&params, 0, sizeof(params));
293
294 params.cipher = key->conf.cipher;
295
296 switch (key->conf.cipher) {
297 case WLAN_CIPHER_SUITE_TKIP:
298 iv32 = key->u.tkip.tx.iv32;
299 iv16 = key->u.tkip.tx.iv16;
300
301 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
302 drv_get_tkip_seq(sdata->local,
303 key->conf.hw_key_idx,
304 &iv32, &iv16);
305
306 seq[0] = iv16 & 0xff;
307 seq[1] = (iv16 >> 8) & 0xff;
308 seq[2] = iv32 & 0xff;
309 seq[3] = (iv32 >> 8) & 0xff;
310 seq[4] = (iv32 >> 16) & 0xff;
311 seq[5] = (iv32 >> 24) & 0xff;
312 params.seq = seq;
313 params.seq_len = 6;
314 break;
315 case WLAN_CIPHER_SUITE_CCMP:
316 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
317 seq[0] = pn64;
318 seq[1] = pn64 >> 8;
319 seq[2] = pn64 >> 16;
320 seq[3] = pn64 >> 24;
321 seq[4] = pn64 >> 32;
322 seq[5] = pn64 >> 40;
323 params.seq = seq;
324 params.seq_len = 6;
325 break;
326 case WLAN_CIPHER_SUITE_AES_CMAC:
327 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
328 seq[0] = pn64;
329 seq[1] = pn64 >> 8;
330 seq[2] = pn64 >> 16;
331 seq[3] = pn64 >> 24;
332 seq[4] = pn64 >> 32;
333 seq[5] = pn64 >> 40;
334 params.seq = seq;
335 params.seq_len = 6;
336 break;
337 }
338
339 params.key = key->conf.key;
340 params.key_len = key->conf.keylen;
341
342 callback(cookie, &params);
343 err = 0;
344
345 out:
346 rcu_read_unlock();
347 return err;
348 }
349
350 static int ieee80211_config_default_key(struct wiphy *wiphy,
351 struct net_device *dev,
352 u8 key_idx, bool uni,
353 bool multi)
354 {
355 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
356
357 ieee80211_set_default_key(sdata, key_idx, uni, multi);
358
359 return 0;
360 }
361
362 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
363 struct net_device *dev,
364 u8 key_idx)
365 {
366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
367
368 ieee80211_set_default_mgmt_key(sdata, key_idx);
369
370 return 0;
371 }
372
373 void sta_set_rate_info_tx(struct sta_info *sta,
374 const struct ieee80211_tx_rate *rate,
375 struct rate_info *rinfo)
376 {
377 rinfo->flags = 0;
378 if (rate->flags & IEEE80211_TX_RC_MCS) {
379 rinfo->flags |= RATE_INFO_FLAGS_MCS;
380 rinfo->mcs = rate->idx;
381 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
382 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
383 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
384 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
385 } else {
386 struct ieee80211_supported_band *sband;
387 sband = sta->local->hw.wiphy->bands[
388 ieee80211_get_sdata_band(sta->sdata)];
389 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
390 }
391 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
392 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
393 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
394 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
395 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
396 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
397 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
398 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
399 }
400
401 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
402 {
403 rinfo->flags = 0;
404
405 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
406 rinfo->flags |= RATE_INFO_FLAGS_MCS;
407 rinfo->mcs = sta->last_rx_rate_idx;
408 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
409 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
410 rinfo->nss = sta->last_rx_rate_vht_nss;
411 rinfo->mcs = sta->last_rx_rate_idx;
412 } else {
413 struct ieee80211_supported_band *sband;
414
415 sband = sta->local->hw.wiphy->bands[
416 ieee80211_get_sdata_band(sta->sdata)];
417 rinfo->legacy =
418 sband->bitrates[sta->last_rx_rate_idx].bitrate;
419 }
420
421 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
422 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
423 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
424 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
425 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
426 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
427 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
428 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
429 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
430 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
431 }
432
433 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
434 {
435 struct ieee80211_sub_if_data *sdata = sta->sdata;
436 struct ieee80211_local *local = sdata->local;
437 struct timespec uptime;
438
439 sinfo->generation = sdata->local->sta_generation;
440
441 sinfo->filled = STATION_INFO_INACTIVE_TIME |
442 STATION_INFO_RX_BYTES |
443 STATION_INFO_TX_BYTES |
444 STATION_INFO_RX_PACKETS |
445 STATION_INFO_TX_PACKETS |
446 STATION_INFO_TX_RETRIES |
447 STATION_INFO_TX_FAILED |
448 STATION_INFO_TX_BITRATE |
449 STATION_INFO_RX_BITRATE |
450 STATION_INFO_RX_DROP_MISC |
451 STATION_INFO_BSS_PARAM |
452 STATION_INFO_CONNECTED_TIME |
453 STATION_INFO_STA_FLAGS |
454 STATION_INFO_BEACON_LOSS_COUNT;
455
456 do_posix_clock_monotonic_gettime(&uptime);
457 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
458
459 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
460 sinfo->rx_bytes = sta->rx_bytes;
461 sinfo->tx_bytes = sta->tx_bytes;
462 sinfo->rx_packets = sta->rx_packets;
463 sinfo->tx_packets = sta->tx_packets;
464 sinfo->tx_retries = sta->tx_retry_count;
465 sinfo->tx_failed = sta->tx_retry_failed;
466 sinfo->rx_dropped_misc = sta->rx_dropped;
467 sinfo->beacon_loss_count = sta->beacon_loss_count;
468
469 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
470 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
471 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
472 if (!local->ops->get_rssi ||
473 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
474 sinfo->signal = (s8)sta->last_signal;
475 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
476 }
477
478 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
479 sta_set_rate_info_rx(sta, &sinfo->rxrate);
480
481 if (ieee80211_vif_is_mesh(&sdata->vif)) {
482 #ifdef CONFIG_MAC80211_MESH
483 sinfo->filled |= STATION_INFO_LLID |
484 STATION_INFO_PLID |
485 STATION_INFO_PLINK_STATE;
486
487 sinfo->llid = le16_to_cpu(sta->llid);
488 sinfo->plid = le16_to_cpu(sta->plid);
489 sinfo->plink_state = sta->plink_state;
490 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
491 sinfo->filled |= STATION_INFO_T_OFFSET;
492 sinfo->t_offset = sta->t_offset;
493 }
494 #endif
495 }
496
497 sinfo->bss_param.flags = 0;
498 if (sdata->vif.bss_conf.use_cts_prot)
499 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
500 if (sdata->vif.bss_conf.use_short_preamble)
501 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
502 if (sdata->vif.bss_conf.use_short_slot)
503 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
504 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
505 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
506
507 sinfo->sta_flags.set = 0;
508 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
509 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
510 BIT(NL80211_STA_FLAG_WME) |
511 BIT(NL80211_STA_FLAG_MFP) |
512 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
513 BIT(NL80211_STA_FLAG_TDLS_PEER);
514 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
515 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
516 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
517 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
518 if (test_sta_flag(sta, WLAN_STA_WME))
519 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
520 if (test_sta_flag(sta, WLAN_STA_MFP))
521 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
522 if (test_sta_flag(sta, WLAN_STA_AUTH))
523 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
524 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
525 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
526 }
527
528 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
529 "rx_packets", "rx_bytes", "wep_weak_iv_count",
530 "rx_duplicates", "rx_fragments", "rx_dropped",
531 "tx_packets", "tx_bytes", "tx_fragments",
532 "tx_filtered", "tx_retry_failed", "tx_retries",
533 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
534 "channel", "noise", "ch_time", "ch_time_busy",
535 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
536 };
537 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
538
539 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
540 struct net_device *dev,
541 int sset)
542 {
543 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
544 int rv = 0;
545
546 if (sset == ETH_SS_STATS)
547 rv += STA_STATS_LEN;
548
549 rv += drv_get_et_sset_count(sdata, sset);
550
551 if (rv == 0)
552 return -EOPNOTSUPP;
553 return rv;
554 }
555
556 static void ieee80211_get_et_stats(struct wiphy *wiphy,
557 struct net_device *dev,
558 struct ethtool_stats *stats,
559 u64 *data)
560 {
561 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
562 struct ieee80211_chanctx_conf *chanctx_conf;
563 struct ieee80211_channel *channel;
564 struct sta_info *sta;
565 struct ieee80211_local *local = sdata->local;
566 struct station_info sinfo;
567 struct survey_info survey;
568 int i, q;
569 #define STA_STATS_SURVEY_LEN 7
570
571 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
572
573 #define ADD_STA_STATS(sta) \
574 do { \
575 data[i++] += sta->rx_packets; \
576 data[i++] += sta->rx_bytes; \
577 data[i++] += sta->wep_weak_iv_count; \
578 data[i++] += sta->num_duplicates; \
579 data[i++] += sta->rx_fragments; \
580 data[i++] += sta->rx_dropped; \
581 \
582 data[i++] += sta->tx_packets; \
583 data[i++] += sta->tx_bytes; \
584 data[i++] += sta->tx_fragments; \
585 data[i++] += sta->tx_filtered_count; \
586 data[i++] += sta->tx_retry_failed; \
587 data[i++] += sta->tx_retry_count; \
588 data[i++] += sta->beacon_loss_count; \
589 } while (0)
590
591 /* For Managed stations, find the single station based on BSSID
592 * and use that. For interface types, iterate through all available
593 * stations and add stats for any station that is assigned to this
594 * network device.
595 */
596
597 mutex_lock(&local->sta_mtx);
598
599 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
600 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
601
602 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
603 goto do_survey;
604
605 i = 0;
606 ADD_STA_STATS(sta);
607
608 data[i++] = sta->sta_state;
609
610 sinfo.filled = 0;
611 sta_set_sinfo(sta, &sinfo);
612
613 if (sinfo.filled & STATION_INFO_TX_BITRATE)
614 data[i] = 100000 *
615 cfg80211_calculate_bitrate(&sinfo.txrate);
616 i++;
617 if (sinfo.filled & STATION_INFO_RX_BITRATE)
618 data[i] = 100000 *
619 cfg80211_calculate_bitrate(&sinfo.rxrate);
620 i++;
621
622 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
623 data[i] = (u8)sinfo.signal_avg;
624 i++;
625 } else {
626 list_for_each_entry(sta, &local->sta_list, list) {
627 /* Make sure this station belongs to the proper dev */
628 if (sta->sdata->dev != dev)
629 continue;
630
631 i = 0;
632 ADD_STA_STATS(sta);
633 }
634 }
635
636 do_survey:
637 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
638 /* Get survey stats for current channel */
639 survey.filled = 0;
640
641 rcu_read_lock();
642 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
643 if (chanctx_conf)
644 channel = chanctx_conf->def.chan;
645 else
646 channel = NULL;
647 rcu_read_unlock();
648
649 if (channel) {
650 q = 0;
651 do {
652 survey.filled = 0;
653 if (drv_get_survey(local, q, &survey) != 0) {
654 survey.filled = 0;
655 break;
656 }
657 q++;
658 } while (channel != survey.channel);
659 }
660
661 if (survey.filled)
662 data[i++] = survey.channel->center_freq;
663 else
664 data[i++] = 0;
665 if (survey.filled & SURVEY_INFO_NOISE_DBM)
666 data[i++] = (u8)survey.noise;
667 else
668 data[i++] = -1LL;
669 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
670 data[i++] = survey.channel_time;
671 else
672 data[i++] = -1LL;
673 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
674 data[i++] = survey.channel_time_busy;
675 else
676 data[i++] = -1LL;
677 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
678 data[i++] = survey.channel_time_ext_busy;
679 else
680 data[i++] = -1LL;
681 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
682 data[i++] = survey.channel_time_rx;
683 else
684 data[i++] = -1LL;
685 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
686 data[i++] = survey.channel_time_tx;
687 else
688 data[i++] = -1LL;
689
690 mutex_unlock(&local->sta_mtx);
691
692 if (WARN_ON(i != STA_STATS_LEN))
693 return;
694
695 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
696 }
697
698 static void ieee80211_get_et_strings(struct wiphy *wiphy,
699 struct net_device *dev,
700 u32 sset, u8 *data)
701 {
702 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
703 int sz_sta_stats = 0;
704
705 if (sset == ETH_SS_STATS) {
706 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
707 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
708 }
709 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
710 }
711
712 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
713 int idx, u8 *mac, struct station_info *sinfo)
714 {
715 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
716 struct ieee80211_local *local = sdata->local;
717 struct sta_info *sta;
718 int ret = -ENOENT;
719
720 mutex_lock(&local->sta_mtx);
721
722 sta = sta_info_get_by_idx(sdata, idx);
723 if (sta) {
724 ret = 0;
725 memcpy(mac, sta->sta.addr, ETH_ALEN);
726 sta_set_sinfo(sta, sinfo);
727 }
728
729 mutex_unlock(&local->sta_mtx);
730
731 return ret;
732 }
733
734 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
735 int idx, struct survey_info *survey)
736 {
737 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
738
739 return drv_get_survey(local, idx, survey);
740 }
741
742 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
743 u8 *mac, struct station_info *sinfo)
744 {
745 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
746 struct ieee80211_local *local = sdata->local;
747 struct sta_info *sta;
748 int ret = -ENOENT;
749
750 mutex_lock(&local->sta_mtx);
751
752 sta = sta_info_get_bss(sdata, mac);
753 if (sta) {
754 ret = 0;
755 sta_set_sinfo(sta, sinfo);
756 }
757
758 mutex_unlock(&local->sta_mtx);
759
760 return ret;
761 }
762
763 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
764 struct cfg80211_chan_def *chandef)
765 {
766 struct ieee80211_local *local = wiphy_priv(wiphy);
767 struct ieee80211_sub_if_data *sdata;
768 int ret = 0;
769
770 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
771 return 0;
772
773 mutex_lock(&local->iflist_mtx);
774 if (local->use_chanctx) {
775 sdata = rcu_dereference_protected(
776 local->monitor_sdata,
777 lockdep_is_held(&local->iflist_mtx));
778 if (sdata) {
779 ieee80211_vif_release_channel(sdata);
780 ret = ieee80211_vif_use_channel(sdata, chandef,
781 IEEE80211_CHANCTX_EXCLUSIVE);
782 }
783 } else if (local->open_count == local->monitors) {
784 local->_oper_channel = chandef->chan;
785 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
786 ieee80211_hw_config(local, 0);
787 }
788
789 if (ret == 0)
790 local->monitor_chandef = *chandef;
791 mutex_unlock(&local->iflist_mtx);
792
793 return ret;
794 }
795
796 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
797 const u8 *resp, size_t resp_len)
798 {
799 struct probe_resp *new, *old;
800
801 if (!resp || !resp_len)
802 return 1;
803
804 old = rtnl_dereference(sdata->u.ap.probe_resp);
805
806 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
807 if (!new)
808 return -ENOMEM;
809
810 new->len = resp_len;
811 memcpy(new->data, resp, resp_len);
812
813 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
814 if (old)
815 kfree_rcu(old, rcu_head);
816
817 return 0;
818 }
819
820 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
821 struct cfg80211_beacon_data *params)
822 {
823 struct beacon_data *new, *old;
824 int new_head_len, new_tail_len;
825 int size, err;
826 u32 changed = BSS_CHANGED_BEACON;
827
828 old = rtnl_dereference(sdata->u.ap.beacon);
829
830 /* Need to have a beacon head if we don't have one yet */
831 if (!params->head && !old)
832 return -EINVAL;
833
834 /* new or old head? */
835 if (params->head)
836 new_head_len = params->head_len;
837 else
838 new_head_len = old->head_len;
839
840 /* new or old tail? */
841 if (params->tail || !old)
842 /* params->tail_len will be zero for !params->tail */
843 new_tail_len = params->tail_len;
844 else
845 new_tail_len = old->tail_len;
846
847 size = sizeof(*new) + new_head_len + new_tail_len;
848
849 new = kzalloc(size, GFP_KERNEL);
850 if (!new)
851 return -ENOMEM;
852
853 /* start filling the new info now */
854
855 /*
856 * pointers go into the block we allocated,
857 * memory is | beacon_data | head | tail |
858 */
859 new->head = ((u8 *) new) + sizeof(*new);
860 new->tail = new->head + new_head_len;
861 new->head_len = new_head_len;
862 new->tail_len = new_tail_len;
863
864 /* copy in head */
865 if (params->head)
866 memcpy(new->head, params->head, new_head_len);
867 else
868 memcpy(new->head, old->head, new_head_len);
869
870 /* copy in optional tail */
871 if (params->tail)
872 memcpy(new->tail, params->tail, new_tail_len);
873 else
874 if (old)
875 memcpy(new->tail, old->tail, new_tail_len);
876
877 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
878 params->probe_resp_len);
879 if (err < 0)
880 return err;
881 if (err == 0)
882 changed |= BSS_CHANGED_AP_PROBE_RESP;
883
884 rcu_assign_pointer(sdata->u.ap.beacon, new);
885
886 if (old)
887 kfree_rcu(old, rcu_head);
888
889 return changed;
890 }
891
892 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
893 struct cfg80211_ap_settings *params)
894 {
895 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
896 struct beacon_data *old;
897 struct ieee80211_sub_if_data *vlan;
898 u32 changed = BSS_CHANGED_BEACON_INT |
899 BSS_CHANGED_BEACON_ENABLED |
900 BSS_CHANGED_BEACON |
901 BSS_CHANGED_SSID |
902 BSS_CHANGED_P2P_PS;
903 int err;
904
905 old = rtnl_dereference(sdata->u.ap.beacon);
906 if (old)
907 return -EALREADY;
908
909 /* TODO: make hostapd tell us what it wants */
910 sdata->smps_mode = IEEE80211_SMPS_OFF;
911 sdata->needed_rx_chains = sdata->local->rx_chains;
912
913 err = ieee80211_vif_use_channel(sdata, &params->chandef,
914 IEEE80211_CHANCTX_SHARED);
915 if (err)
916 return err;
917
918 /*
919 * Apply control port protocol, this allows us to
920 * not encrypt dynamic WEP control frames.
921 */
922 sdata->control_port_protocol = params->crypto.control_port_ethertype;
923 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
924 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
925 vlan->control_port_protocol =
926 params->crypto.control_port_ethertype;
927 vlan->control_port_no_encrypt =
928 params->crypto.control_port_no_encrypt;
929 }
930
931 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
932 sdata->vif.bss_conf.dtim_period = params->dtim_period;
933
934 sdata->vif.bss_conf.ssid_len = params->ssid_len;
935 if (params->ssid_len)
936 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
937 params->ssid_len);
938 sdata->vif.bss_conf.hidden_ssid =
939 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
940
941 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
942 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
943
944 err = ieee80211_assign_beacon(sdata, &params->beacon);
945 if (err < 0)
946 return err;
947 changed |= err;
948
949 err = drv_start_ap(sdata->local, sdata);
950 if (err) {
951 old = rtnl_dereference(sdata->u.ap.beacon);
952 if (old)
953 kfree_rcu(old, rcu_head);
954 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
955 return err;
956 }
957
958 ieee80211_bss_info_change_notify(sdata, changed);
959
960 netif_carrier_on(dev);
961 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
962 netif_carrier_on(vlan->dev);
963
964 return 0;
965 }
966
967 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
968 struct cfg80211_beacon_data *params)
969 {
970 struct ieee80211_sub_if_data *sdata;
971 struct beacon_data *old;
972 int err;
973
974 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
975
976 old = rtnl_dereference(sdata->u.ap.beacon);
977 if (!old)
978 return -ENOENT;
979
980 err = ieee80211_assign_beacon(sdata, params);
981 if (err < 0)
982 return err;
983 ieee80211_bss_info_change_notify(sdata, err);
984 return 0;
985 }
986
987 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
988 {
989 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
990 struct ieee80211_sub_if_data *vlan;
991 struct ieee80211_local *local = sdata->local;
992 struct beacon_data *old_beacon;
993 struct probe_resp *old_probe_resp;
994
995 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
996 if (!old_beacon)
997 return -ENOENT;
998 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
999
1000 /* turn off carrier for this interface and dependent VLANs */
1001 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1002 netif_carrier_off(vlan->dev);
1003 netif_carrier_off(dev);
1004
1005 /* remove beacon and probe response */
1006 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1007 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1008 kfree_rcu(old_beacon, rcu_head);
1009 if (old_probe_resp)
1010 kfree_rcu(old_probe_resp, rcu_head);
1011
1012 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1013 sta_info_flush(local, vlan);
1014 sta_info_flush(local, sdata);
1015 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1016
1017 drv_stop_ap(sdata->local, sdata);
1018
1019 /* free all potentially still buffered bcast frames */
1020 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1021 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1022
1023 ieee80211_vif_release_channel(sdata);
1024
1025 return 0;
1026 }
1027
1028 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1029 struct iapp_layer2_update {
1030 u8 da[ETH_ALEN]; /* broadcast */
1031 u8 sa[ETH_ALEN]; /* STA addr */
1032 __be16 len; /* 6 */
1033 u8 dsap; /* 0 */
1034 u8 ssap; /* 0 */
1035 u8 control;
1036 u8 xid_info[3];
1037 } __packed;
1038
1039 static void ieee80211_send_layer2_update(struct sta_info *sta)
1040 {
1041 struct iapp_layer2_update *msg;
1042 struct sk_buff *skb;
1043
1044 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1045 * bridge devices */
1046
1047 skb = dev_alloc_skb(sizeof(*msg));
1048 if (!skb)
1049 return;
1050 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1051
1052 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1053 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1054
1055 eth_broadcast_addr(msg->da);
1056 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1057 msg->len = htons(6);
1058 msg->dsap = 0;
1059 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1060 msg->control = 0xaf; /* XID response lsb.1111F101.
1061 * F=0 (no poll command; unsolicited frame) */
1062 msg->xid_info[0] = 0x81; /* XID format identifier */
1063 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1064 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1065
1066 skb->dev = sta->sdata->dev;
1067 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1068 memset(skb->cb, 0, sizeof(skb->cb));
1069 netif_rx_ni(skb);
1070 }
1071
1072 static int sta_apply_parameters(struct ieee80211_local *local,
1073 struct sta_info *sta,
1074 struct station_parameters *params)
1075 {
1076 int ret = 0;
1077 u32 rates;
1078 int i, j;
1079 struct ieee80211_supported_band *sband;
1080 struct ieee80211_sub_if_data *sdata = sta->sdata;
1081 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1082 u32 mask, set;
1083
1084 sband = local->hw.wiphy->bands[band];
1085
1086 mask = params->sta_flags_mask;
1087 set = params->sta_flags_set;
1088
1089 /*
1090 * In mesh mode, we can clear AUTHENTICATED flag but must
1091 * also make ASSOCIATED follow appropriately for the driver
1092 * API. See also below, after AUTHORIZED changes.
1093 */
1094 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1095 /* cfg80211 should not allow this in non-mesh modes */
1096 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1097 return -EINVAL;
1098
1099 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1100 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1101 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1102 if (ret)
1103 return ret;
1104 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1105 if (ret)
1106 return ret;
1107 }
1108 }
1109
1110 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1111 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1112 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1113 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1114 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1115 if (ret)
1116 return ret;
1117 }
1118
1119 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1120 /* cfg80211 should not allow this in non-mesh modes */
1121 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1122 return -EINVAL;
1123
1124 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1125 test_sta_flag(sta, WLAN_STA_AUTH)) {
1126 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1127 if (ret)
1128 return ret;
1129 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1130 if (ret)
1131 return ret;
1132 }
1133 }
1134
1135
1136 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1137 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1138 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1139 else
1140 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1141 }
1142
1143 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1144 if (set & BIT(NL80211_STA_FLAG_WME)) {
1145 set_sta_flag(sta, WLAN_STA_WME);
1146 sta->sta.wme = true;
1147 } else {
1148 clear_sta_flag(sta, WLAN_STA_WME);
1149 sta->sta.wme = false;
1150 }
1151 }
1152
1153 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1154 if (set & BIT(NL80211_STA_FLAG_MFP))
1155 set_sta_flag(sta, WLAN_STA_MFP);
1156 else
1157 clear_sta_flag(sta, WLAN_STA_MFP);
1158 }
1159
1160 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1161 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1162 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1163 else
1164 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1165 }
1166
1167 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1168 sta->sta.uapsd_queues = params->uapsd_queues;
1169 sta->sta.max_sp = params->max_sp;
1170 }
1171
1172 /*
1173 * cfg80211 validates this (1-2007) and allows setting the AID
1174 * only when creating a new station entry
1175 */
1176 if (params->aid)
1177 sta->sta.aid = params->aid;
1178
1179 /*
1180 * FIXME: updating the following information is racy when this
1181 * function is called from ieee80211_change_station().
1182 * However, all this information should be static so
1183 * maybe we should just reject attemps to change it.
1184 */
1185
1186 if (params->listen_interval >= 0)
1187 sta->listen_interval = params->listen_interval;
1188
1189 if (params->supported_rates) {
1190 rates = 0;
1191
1192 for (i = 0; i < params->supported_rates_len; i++) {
1193 int rate = (params->supported_rates[i] & 0x7f) * 5;
1194 for (j = 0; j < sband->n_bitrates; j++) {
1195 if (sband->bitrates[j].bitrate == rate)
1196 rates |= BIT(j);
1197 }
1198 }
1199 sta->sta.supp_rates[band] = rates;
1200 }
1201
1202 if (params->ht_capa)
1203 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1204 params->ht_capa,
1205 &sta->sta.ht_cap);
1206
1207 if (params->vht_capa)
1208 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1209 params->vht_capa,
1210 &sta->sta.vht_cap);
1211
1212 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1213 #ifdef CONFIG_MAC80211_MESH
1214 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1215 switch (params->plink_state) {
1216 case NL80211_PLINK_LISTEN:
1217 case NL80211_PLINK_ESTAB:
1218 case NL80211_PLINK_BLOCKED:
1219 sta->plink_state = params->plink_state;
1220 break;
1221 default:
1222 /* nothing */
1223 break;
1224 }
1225 else
1226 switch (params->plink_action) {
1227 case PLINK_ACTION_OPEN:
1228 mesh_plink_open(sta);
1229 break;
1230 case PLINK_ACTION_BLOCK:
1231 mesh_plink_block(sta);
1232 break;
1233 }
1234 #endif
1235 }
1236
1237 return 0;
1238 }
1239
1240 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1241 u8 *mac, struct station_parameters *params)
1242 {
1243 struct ieee80211_local *local = wiphy_priv(wiphy);
1244 struct sta_info *sta;
1245 struct ieee80211_sub_if_data *sdata;
1246 int err;
1247 int layer2_update;
1248
1249 if (params->vlan) {
1250 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1251
1252 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1253 sdata->vif.type != NL80211_IFTYPE_AP)
1254 return -EINVAL;
1255 } else
1256 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1257
1258 if (ether_addr_equal(mac, sdata->vif.addr))
1259 return -EINVAL;
1260
1261 if (is_multicast_ether_addr(mac))
1262 return -EINVAL;
1263
1264 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1265 if (!sta)
1266 return -ENOMEM;
1267
1268 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1269 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1270
1271 err = sta_apply_parameters(local, sta, params);
1272 if (err) {
1273 sta_info_free(local, sta);
1274 return err;
1275 }
1276
1277 /*
1278 * for TDLS, rate control should be initialized only when supported
1279 * rates are known.
1280 */
1281 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1282 rate_control_rate_init(sta);
1283
1284 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1285 sdata->vif.type == NL80211_IFTYPE_AP;
1286
1287 err = sta_info_insert_rcu(sta);
1288 if (err) {
1289 rcu_read_unlock();
1290 return err;
1291 }
1292
1293 if (layer2_update)
1294 ieee80211_send_layer2_update(sta);
1295
1296 rcu_read_unlock();
1297
1298 return 0;
1299 }
1300
1301 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1302 u8 *mac)
1303 {
1304 struct ieee80211_local *local = wiphy_priv(wiphy);
1305 struct ieee80211_sub_if_data *sdata;
1306
1307 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1308
1309 if (mac)
1310 return sta_info_destroy_addr_bss(sdata, mac);
1311
1312 sta_info_flush(local, sdata);
1313 return 0;
1314 }
1315
1316 static int ieee80211_change_station(struct wiphy *wiphy,
1317 struct net_device *dev,
1318 u8 *mac,
1319 struct station_parameters *params)
1320 {
1321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1322 struct ieee80211_local *local = wiphy_priv(wiphy);
1323 struct sta_info *sta;
1324 struct ieee80211_sub_if_data *vlansdata;
1325 int err;
1326
1327 mutex_lock(&local->sta_mtx);
1328
1329 sta = sta_info_get_bss(sdata, mac);
1330 if (!sta) {
1331 mutex_unlock(&local->sta_mtx);
1332 return -ENOENT;
1333 }
1334
1335 /* in station mode, supported rates are only valid with TDLS */
1336 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1337 params->supported_rates &&
1338 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1339 mutex_unlock(&local->sta_mtx);
1340 return -EINVAL;
1341 }
1342
1343 if (params->vlan && params->vlan != sta->sdata->dev) {
1344 bool prev_4addr = false;
1345 bool new_4addr = false;
1346
1347 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1348
1349 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1350 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1351 mutex_unlock(&local->sta_mtx);
1352 return -EINVAL;
1353 }
1354
1355 if (params->vlan->ieee80211_ptr->use_4addr) {
1356 if (vlansdata->u.vlan.sta) {
1357 mutex_unlock(&local->sta_mtx);
1358 return -EBUSY;
1359 }
1360
1361 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1362 new_4addr = true;
1363 }
1364
1365 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1366 sta->sdata->u.vlan.sta) {
1367 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1368 prev_4addr = true;
1369 }
1370
1371 sta->sdata = vlansdata;
1372
1373 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1374 prev_4addr != new_4addr) {
1375 if (new_4addr)
1376 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1377 else
1378 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1379 }
1380
1381 ieee80211_send_layer2_update(sta);
1382 }
1383
1384 err = sta_apply_parameters(local, sta, params);
1385 if (err) {
1386 mutex_unlock(&local->sta_mtx);
1387 return err;
1388 }
1389
1390 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1391 rate_control_rate_init(sta);
1392
1393 mutex_unlock(&local->sta_mtx);
1394
1395 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1396 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1397 ieee80211_recalc_ps(local, -1);
1398 ieee80211_recalc_ps_vif(sdata);
1399 }
1400 return 0;
1401 }
1402
1403 #ifdef CONFIG_MAC80211_MESH
1404 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1405 u8 *dst, u8 *next_hop)
1406 {
1407 struct ieee80211_sub_if_data *sdata;
1408 struct mesh_path *mpath;
1409 struct sta_info *sta;
1410 int err;
1411
1412 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1413
1414 rcu_read_lock();
1415 sta = sta_info_get(sdata, next_hop);
1416 if (!sta) {
1417 rcu_read_unlock();
1418 return -ENOENT;
1419 }
1420
1421 err = mesh_path_add(dst, sdata);
1422 if (err) {
1423 rcu_read_unlock();
1424 return err;
1425 }
1426
1427 mpath = mesh_path_lookup(dst, sdata);
1428 if (!mpath) {
1429 rcu_read_unlock();
1430 return -ENXIO;
1431 }
1432 mesh_path_fix_nexthop(mpath, sta);
1433
1434 rcu_read_unlock();
1435 return 0;
1436 }
1437
1438 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1439 u8 *dst)
1440 {
1441 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1442
1443 if (dst)
1444 return mesh_path_del(dst, sdata);
1445
1446 mesh_path_flush_by_iface(sdata);
1447 return 0;
1448 }
1449
1450 static int ieee80211_change_mpath(struct wiphy *wiphy,
1451 struct net_device *dev,
1452 u8 *dst, u8 *next_hop)
1453 {
1454 struct ieee80211_sub_if_data *sdata;
1455 struct mesh_path *mpath;
1456 struct sta_info *sta;
1457
1458 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1459
1460 rcu_read_lock();
1461
1462 sta = sta_info_get(sdata, next_hop);
1463 if (!sta) {
1464 rcu_read_unlock();
1465 return -ENOENT;
1466 }
1467
1468 mpath = mesh_path_lookup(dst, sdata);
1469 if (!mpath) {
1470 rcu_read_unlock();
1471 return -ENOENT;
1472 }
1473
1474 mesh_path_fix_nexthop(mpath, sta);
1475
1476 rcu_read_unlock();
1477 return 0;
1478 }
1479
1480 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1481 struct mpath_info *pinfo)
1482 {
1483 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1484
1485 if (next_hop_sta)
1486 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1487 else
1488 memset(next_hop, 0, ETH_ALEN);
1489
1490 memset(pinfo, 0, sizeof(*pinfo));
1491
1492 pinfo->generation = mesh_paths_generation;
1493
1494 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1495 MPATH_INFO_SN |
1496 MPATH_INFO_METRIC |
1497 MPATH_INFO_EXPTIME |
1498 MPATH_INFO_DISCOVERY_TIMEOUT |
1499 MPATH_INFO_DISCOVERY_RETRIES |
1500 MPATH_INFO_FLAGS;
1501
1502 pinfo->frame_qlen = mpath->frame_queue.qlen;
1503 pinfo->sn = mpath->sn;
1504 pinfo->metric = mpath->metric;
1505 if (time_before(jiffies, mpath->exp_time))
1506 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1507 pinfo->discovery_timeout =
1508 jiffies_to_msecs(mpath->discovery_timeout);
1509 pinfo->discovery_retries = mpath->discovery_retries;
1510 if (mpath->flags & MESH_PATH_ACTIVE)
1511 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1512 if (mpath->flags & MESH_PATH_RESOLVING)
1513 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1514 if (mpath->flags & MESH_PATH_SN_VALID)
1515 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1516 if (mpath->flags & MESH_PATH_FIXED)
1517 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1518 if (mpath->flags & MESH_PATH_RESOLVED)
1519 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1520 }
1521
1522 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1523 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1524
1525 {
1526 struct ieee80211_sub_if_data *sdata;
1527 struct mesh_path *mpath;
1528
1529 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1530
1531 rcu_read_lock();
1532 mpath = mesh_path_lookup(dst, sdata);
1533 if (!mpath) {
1534 rcu_read_unlock();
1535 return -ENOENT;
1536 }
1537 memcpy(dst, mpath->dst, ETH_ALEN);
1538 mpath_set_pinfo(mpath, next_hop, pinfo);
1539 rcu_read_unlock();
1540 return 0;
1541 }
1542
1543 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1544 int idx, u8 *dst, u8 *next_hop,
1545 struct mpath_info *pinfo)
1546 {
1547 struct ieee80211_sub_if_data *sdata;
1548 struct mesh_path *mpath;
1549
1550 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1551
1552 rcu_read_lock();
1553 mpath = mesh_path_lookup_by_idx(idx, sdata);
1554 if (!mpath) {
1555 rcu_read_unlock();
1556 return -ENOENT;
1557 }
1558 memcpy(dst, mpath->dst, ETH_ALEN);
1559 mpath_set_pinfo(mpath, next_hop, pinfo);
1560 rcu_read_unlock();
1561 return 0;
1562 }
1563
1564 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1565 struct net_device *dev,
1566 struct mesh_config *conf)
1567 {
1568 struct ieee80211_sub_if_data *sdata;
1569 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1570
1571 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1572 return 0;
1573 }
1574
1575 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1576 {
1577 return (mask >> (parm-1)) & 0x1;
1578 }
1579
1580 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1581 const struct mesh_setup *setup)
1582 {
1583 u8 *new_ie;
1584 const u8 *old_ie;
1585 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1586 struct ieee80211_sub_if_data, u.mesh);
1587
1588 /* allocate information elements */
1589 new_ie = NULL;
1590 old_ie = ifmsh->ie;
1591
1592 if (setup->ie_len) {
1593 new_ie = kmemdup(setup->ie, setup->ie_len,
1594 GFP_KERNEL);
1595 if (!new_ie)
1596 return -ENOMEM;
1597 }
1598 ifmsh->ie_len = setup->ie_len;
1599 ifmsh->ie = new_ie;
1600 kfree(old_ie);
1601
1602 /* now copy the rest of the setup parameters */
1603 ifmsh->mesh_id_len = setup->mesh_id_len;
1604 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1605 ifmsh->mesh_sp_id = setup->sync_method;
1606 ifmsh->mesh_pp_id = setup->path_sel_proto;
1607 ifmsh->mesh_pm_id = setup->path_metric;
1608 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1609 if (setup->is_authenticated)
1610 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1611 if (setup->is_secure)
1612 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1613
1614 /* mcast rate setting in Mesh Node */
1615 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1616 sizeof(setup->mcast_rate));
1617
1618 return 0;
1619 }
1620
1621 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1622 struct net_device *dev, u32 mask,
1623 const struct mesh_config *nconf)
1624 {
1625 struct mesh_config *conf;
1626 struct ieee80211_sub_if_data *sdata;
1627 struct ieee80211_if_mesh *ifmsh;
1628
1629 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1630 ifmsh = &sdata->u.mesh;
1631
1632 /* Set the config options which we are interested in setting */
1633 conf = &(sdata->u.mesh.mshcfg);
1634 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1635 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1636 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1637 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1638 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1639 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1640 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1641 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1642 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1643 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1644 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1645 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1646 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1647 conf->element_ttl = nconf->element_ttl;
1648 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1649 conf->auto_open_plinks = nconf->auto_open_plinks;
1650 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1651 conf->dot11MeshNbrOffsetMaxNeighbor =
1652 nconf->dot11MeshNbrOffsetMaxNeighbor;
1653 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1654 conf->dot11MeshHWMPmaxPREQretries =
1655 nconf->dot11MeshHWMPmaxPREQretries;
1656 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1657 conf->path_refresh_time = nconf->path_refresh_time;
1658 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1659 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1660 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1661 conf->dot11MeshHWMPactivePathTimeout =
1662 nconf->dot11MeshHWMPactivePathTimeout;
1663 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1664 conf->dot11MeshHWMPpreqMinInterval =
1665 nconf->dot11MeshHWMPpreqMinInterval;
1666 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1667 conf->dot11MeshHWMPperrMinInterval =
1668 nconf->dot11MeshHWMPperrMinInterval;
1669 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1670 mask))
1671 conf->dot11MeshHWMPnetDiameterTraversalTime =
1672 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1673 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1674 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1675 ieee80211_mesh_root_setup(ifmsh);
1676 }
1677 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1678 /* our current gate announcement implementation rides on root
1679 * announcements, so require this ifmsh to also be a root node
1680 * */
1681 if (nconf->dot11MeshGateAnnouncementProtocol &&
1682 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1683 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1684 ieee80211_mesh_root_setup(ifmsh);
1685 }
1686 conf->dot11MeshGateAnnouncementProtocol =
1687 nconf->dot11MeshGateAnnouncementProtocol;
1688 }
1689 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1690 conf->dot11MeshHWMPRannInterval =
1691 nconf->dot11MeshHWMPRannInterval;
1692 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1693 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1694 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1695 /* our RSSI threshold implementation is supported only for
1696 * devices that report signal in dBm.
1697 */
1698 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1699 return -ENOTSUPP;
1700 conf->rssi_threshold = nconf->rssi_threshold;
1701 }
1702 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1703 conf->ht_opmode = nconf->ht_opmode;
1704 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1705 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1706 }
1707 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1708 conf->dot11MeshHWMPactivePathToRootTimeout =
1709 nconf->dot11MeshHWMPactivePathToRootTimeout;
1710 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1711 conf->dot11MeshHWMProotInterval =
1712 nconf->dot11MeshHWMProotInterval;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1714 conf->dot11MeshHWMPconfirmationInterval =
1715 nconf->dot11MeshHWMPconfirmationInterval;
1716 return 0;
1717 }
1718
1719 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1720 const struct mesh_config *conf,
1721 const struct mesh_setup *setup)
1722 {
1723 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1724 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1725 int err;
1726
1727 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1728 err = copy_mesh_setup(ifmsh, setup);
1729 if (err)
1730 return err;
1731
1732 /* can mesh use other SMPS modes? */
1733 sdata->smps_mode = IEEE80211_SMPS_OFF;
1734 sdata->needed_rx_chains = sdata->local->rx_chains;
1735
1736 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1737 IEEE80211_CHANCTX_SHARED);
1738 if (err)
1739 return err;
1740
1741 ieee80211_start_mesh(sdata);
1742
1743 return 0;
1744 }
1745
1746 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1747 {
1748 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1749
1750 ieee80211_stop_mesh(sdata);
1751 ieee80211_vif_release_channel(sdata);
1752
1753 return 0;
1754 }
1755 #endif
1756
1757 static int ieee80211_change_bss(struct wiphy *wiphy,
1758 struct net_device *dev,
1759 struct bss_parameters *params)
1760 {
1761 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1762 enum ieee80211_band band;
1763 u32 changed = 0;
1764
1765 if (!rtnl_dereference(sdata->u.ap.beacon))
1766 return -ENOENT;
1767
1768 band = ieee80211_get_sdata_band(sdata);
1769
1770 if (params->use_cts_prot >= 0) {
1771 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1772 changed |= BSS_CHANGED_ERP_CTS_PROT;
1773 }
1774 if (params->use_short_preamble >= 0) {
1775 sdata->vif.bss_conf.use_short_preamble =
1776 params->use_short_preamble;
1777 changed |= BSS_CHANGED_ERP_PREAMBLE;
1778 }
1779
1780 if (!sdata->vif.bss_conf.use_short_slot &&
1781 band == IEEE80211_BAND_5GHZ) {
1782 sdata->vif.bss_conf.use_short_slot = true;
1783 changed |= BSS_CHANGED_ERP_SLOT;
1784 }
1785
1786 if (params->use_short_slot_time >= 0) {
1787 sdata->vif.bss_conf.use_short_slot =
1788 params->use_short_slot_time;
1789 changed |= BSS_CHANGED_ERP_SLOT;
1790 }
1791
1792 if (params->basic_rates) {
1793 int i, j;
1794 u32 rates = 0;
1795 struct ieee80211_supported_band *sband = wiphy->bands[band];
1796
1797 for (i = 0; i < params->basic_rates_len; i++) {
1798 int rate = (params->basic_rates[i] & 0x7f) * 5;
1799 for (j = 0; j < sband->n_bitrates; j++) {
1800 if (sband->bitrates[j].bitrate == rate)
1801 rates |= BIT(j);
1802 }
1803 }
1804 sdata->vif.bss_conf.basic_rates = rates;
1805 changed |= BSS_CHANGED_BASIC_RATES;
1806 }
1807
1808 if (params->ap_isolate >= 0) {
1809 if (params->ap_isolate)
1810 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1811 else
1812 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1813 }
1814
1815 if (params->ht_opmode >= 0) {
1816 sdata->vif.bss_conf.ht_operation_mode =
1817 (u16) params->ht_opmode;
1818 changed |= BSS_CHANGED_HT;
1819 }
1820
1821 if (params->p2p_ctwindow >= 0) {
1822 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1823 changed |= BSS_CHANGED_P2P_PS;
1824 }
1825
1826 if (params->p2p_opp_ps >= 0) {
1827 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1828 changed |= BSS_CHANGED_P2P_PS;
1829 }
1830
1831 ieee80211_bss_info_change_notify(sdata, changed);
1832
1833 return 0;
1834 }
1835
1836 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1837 struct net_device *dev,
1838 struct ieee80211_txq_params *params)
1839 {
1840 struct ieee80211_local *local = wiphy_priv(wiphy);
1841 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842 struct ieee80211_tx_queue_params p;
1843
1844 if (!local->ops->conf_tx)
1845 return -EOPNOTSUPP;
1846
1847 if (local->hw.queues < IEEE80211_NUM_ACS)
1848 return -EOPNOTSUPP;
1849
1850 memset(&p, 0, sizeof(p));
1851 p.aifs = params->aifs;
1852 p.cw_max = params->cwmax;
1853 p.cw_min = params->cwmin;
1854 p.txop = params->txop;
1855
1856 /*
1857 * Setting tx queue params disables u-apsd because it's only
1858 * called in master mode.
1859 */
1860 p.uapsd = false;
1861
1862 sdata->tx_conf[params->ac] = p;
1863 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1864 wiphy_debug(local->hw.wiphy,
1865 "failed to set TX queue parameters for AC %d\n",
1866 params->ac);
1867 return -EINVAL;
1868 }
1869
1870 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1871
1872 return 0;
1873 }
1874
1875 #ifdef CONFIG_PM
1876 static int ieee80211_suspend(struct wiphy *wiphy,
1877 struct cfg80211_wowlan *wowlan)
1878 {
1879 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1880 }
1881
1882 static int ieee80211_resume(struct wiphy *wiphy)
1883 {
1884 return __ieee80211_resume(wiphy_priv(wiphy));
1885 }
1886 #else
1887 #define ieee80211_suspend NULL
1888 #define ieee80211_resume NULL
1889 #endif
1890
1891 static int ieee80211_scan(struct wiphy *wiphy,
1892 struct cfg80211_scan_request *req)
1893 {
1894 struct ieee80211_sub_if_data *sdata;
1895
1896 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1897
1898 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1899 case NL80211_IFTYPE_STATION:
1900 case NL80211_IFTYPE_ADHOC:
1901 case NL80211_IFTYPE_MESH_POINT:
1902 case NL80211_IFTYPE_P2P_CLIENT:
1903 case NL80211_IFTYPE_P2P_DEVICE:
1904 break;
1905 case NL80211_IFTYPE_P2P_GO:
1906 if (sdata->local->ops->hw_scan)
1907 break;
1908 /*
1909 * FIXME: implement NoA while scanning in software,
1910 * for now fall through to allow scanning only when
1911 * beaconing hasn't been configured yet
1912 */
1913 case NL80211_IFTYPE_AP:
1914 /*
1915 * If the scan has been forced (and the driver supports
1916 * forcing), don't care about being beaconing already.
1917 * This will create problems to the attached stations (e.g. all
1918 * the frames sent while scanning on other channel will be
1919 * lost)
1920 */
1921 if (sdata->u.ap.beacon &&
1922 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1923 !(req->flags & NL80211_SCAN_FLAG_AP)))
1924 return -EOPNOTSUPP;
1925 break;
1926 default:
1927 return -EOPNOTSUPP;
1928 }
1929
1930 return ieee80211_request_scan(sdata, req);
1931 }
1932
1933 static int
1934 ieee80211_sched_scan_start(struct wiphy *wiphy,
1935 struct net_device *dev,
1936 struct cfg80211_sched_scan_request *req)
1937 {
1938 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1939
1940 if (!sdata->local->ops->sched_scan_start)
1941 return -EOPNOTSUPP;
1942
1943 return ieee80211_request_sched_scan_start(sdata, req);
1944 }
1945
1946 static int
1947 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1948 {
1949 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1950
1951 if (!sdata->local->ops->sched_scan_stop)
1952 return -EOPNOTSUPP;
1953
1954 return ieee80211_request_sched_scan_stop(sdata);
1955 }
1956
1957 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1958 struct cfg80211_auth_request *req)
1959 {
1960 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1961 }
1962
1963 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1964 struct cfg80211_assoc_request *req)
1965 {
1966 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1967 }
1968
1969 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1970 struct cfg80211_deauth_request *req)
1971 {
1972 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1973 }
1974
1975 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1976 struct cfg80211_disassoc_request *req)
1977 {
1978 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1979 }
1980
1981 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1982 struct cfg80211_ibss_params *params)
1983 {
1984 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1985 }
1986
1987 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1988 {
1989 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
1990 }
1991
1992 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
1993 int rate[IEEE80211_NUM_BANDS])
1994 {
1995 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1996
1997 memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(rate));
1998
1999 return 0;
2000 }
2001
2002 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2003 {
2004 struct ieee80211_local *local = wiphy_priv(wiphy);
2005 int err;
2006
2007 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2008 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2009
2010 if (err)
2011 return err;
2012 }
2013
2014 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2015 err = drv_set_coverage_class(local, wiphy->coverage_class);
2016
2017 if (err)
2018 return err;
2019 }
2020
2021 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2022 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2023
2024 if (err)
2025 return err;
2026 }
2027
2028 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2029 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2030 return -EINVAL;
2031 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2032 }
2033 if (changed & WIPHY_PARAM_RETRY_LONG) {
2034 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2035 return -EINVAL;
2036 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2037 }
2038 if (changed &
2039 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2040 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2041
2042 return 0;
2043 }
2044
2045 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2046 struct wireless_dev *wdev,
2047 enum nl80211_tx_power_setting type, int mbm)
2048 {
2049 struct ieee80211_local *local = wiphy_priv(wiphy);
2050 struct ieee80211_sub_if_data *sdata;
2051
2052 if (wdev) {
2053 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2054
2055 switch (type) {
2056 case NL80211_TX_POWER_AUTOMATIC:
2057 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2058 break;
2059 case NL80211_TX_POWER_LIMITED:
2060 case NL80211_TX_POWER_FIXED:
2061 if (mbm < 0 || (mbm % 100))
2062 return -EOPNOTSUPP;
2063 sdata->user_power_level = MBM_TO_DBM(mbm);
2064 break;
2065 }
2066
2067 ieee80211_recalc_txpower(sdata);
2068
2069 return 0;
2070 }
2071
2072 switch (type) {
2073 case NL80211_TX_POWER_AUTOMATIC:
2074 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2075 break;
2076 case NL80211_TX_POWER_LIMITED:
2077 case NL80211_TX_POWER_FIXED:
2078 if (mbm < 0 || (mbm % 100))
2079 return -EOPNOTSUPP;
2080 local->user_power_level = MBM_TO_DBM(mbm);
2081 break;
2082 }
2083
2084 mutex_lock(&local->iflist_mtx);
2085 list_for_each_entry(sdata, &local->interfaces, list)
2086 sdata->user_power_level = local->user_power_level;
2087 list_for_each_entry(sdata, &local->interfaces, list)
2088 ieee80211_recalc_txpower(sdata);
2089 mutex_unlock(&local->iflist_mtx);
2090
2091 return 0;
2092 }
2093
2094 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2095 struct wireless_dev *wdev,
2096 int *dbm)
2097 {
2098 struct ieee80211_local *local = wiphy_priv(wiphy);
2099 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2100
2101 if (!local->use_chanctx)
2102 *dbm = local->hw.conf.power_level;
2103 else
2104 *dbm = sdata->vif.bss_conf.txpower;
2105
2106 return 0;
2107 }
2108
2109 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2110 const u8 *addr)
2111 {
2112 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2113
2114 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2115
2116 return 0;
2117 }
2118
2119 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2120 {
2121 struct ieee80211_local *local = wiphy_priv(wiphy);
2122
2123 drv_rfkill_poll(local);
2124 }
2125
2126 #ifdef CONFIG_NL80211_TESTMODE
2127 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2128 {
2129 struct ieee80211_local *local = wiphy_priv(wiphy);
2130
2131 if (!local->ops->testmode_cmd)
2132 return -EOPNOTSUPP;
2133
2134 return local->ops->testmode_cmd(&local->hw, data, len);
2135 }
2136
2137 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2138 struct sk_buff *skb,
2139 struct netlink_callback *cb,
2140 void *data, int len)
2141 {
2142 struct ieee80211_local *local = wiphy_priv(wiphy);
2143
2144 if (!local->ops->testmode_dump)
2145 return -EOPNOTSUPP;
2146
2147 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2148 }
2149 #endif
2150
2151 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2152 enum ieee80211_smps_mode smps_mode)
2153 {
2154 const u8 *ap;
2155 enum ieee80211_smps_mode old_req;
2156 int err;
2157
2158 lockdep_assert_held(&sdata->u.mgd.mtx);
2159
2160 old_req = sdata->u.mgd.req_smps;
2161 sdata->u.mgd.req_smps = smps_mode;
2162
2163 if (old_req == smps_mode &&
2164 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2165 return 0;
2166
2167 /*
2168 * If not associated, or current association is not an HT
2169 * association, there's no need to do anything, just store
2170 * the new value until we associate.
2171 */
2172 if (!sdata->u.mgd.associated ||
2173 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2174 return 0;
2175
2176 ap = sdata->u.mgd.associated->bssid;
2177
2178 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2179 if (sdata->u.mgd.powersave)
2180 smps_mode = IEEE80211_SMPS_DYNAMIC;
2181 else
2182 smps_mode = IEEE80211_SMPS_OFF;
2183 }
2184
2185 /* send SM PS frame to AP */
2186 err = ieee80211_send_smps_action(sdata, smps_mode,
2187 ap, ap);
2188 if (err)
2189 sdata->u.mgd.req_smps = old_req;
2190
2191 return err;
2192 }
2193
2194 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2195 bool enabled, int timeout)
2196 {
2197 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2198 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2199
2200 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2201 return -EOPNOTSUPP;
2202
2203 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2204 return -EOPNOTSUPP;
2205
2206 if (enabled == sdata->u.mgd.powersave &&
2207 timeout == local->dynamic_ps_forced_timeout)
2208 return 0;
2209
2210 sdata->u.mgd.powersave = enabled;
2211 local->dynamic_ps_forced_timeout = timeout;
2212
2213 /* no change, but if automatic follow powersave */
2214 mutex_lock(&sdata->u.mgd.mtx);
2215 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2216 mutex_unlock(&sdata->u.mgd.mtx);
2217
2218 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2219 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2220
2221 ieee80211_recalc_ps(local, -1);
2222 ieee80211_recalc_ps_vif(sdata);
2223
2224 return 0;
2225 }
2226
2227 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2228 struct net_device *dev,
2229 s32 rssi_thold, u32 rssi_hyst)
2230 {
2231 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2232 struct ieee80211_vif *vif = &sdata->vif;
2233 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2234
2235 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2236 rssi_hyst == bss_conf->cqm_rssi_hyst)
2237 return 0;
2238
2239 bss_conf->cqm_rssi_thold = rssi_thold;
2240 bss_conf->cqm_rssi_hyst = rssi_hyst;
2241
2242 /* tell the driver upon association, unless already associated */
2243 if (sdata->u.mgd.associated &&
2244 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2245 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2246
2247 return 0;
2248 }
2249
2250 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2251 struct net_device *dev,
2252 const u8 *addr,
2253 const struct cfg80211_bitrate_mask *mask)
2254 {
2255 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2256 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2257 int i, ret;
2258
2259 if (!ieee80211_sdata_running(sdata))
2260 return -ENETDOWN;
2261
2262 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2263 ret = drv_set_bitrate_mask(local, sdata, mask);
2264 if (ret)
2265 return ret;
2266 }
2267
2268 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2269 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2270 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2271 sizeof(mask->control[i].mcs));
2272 }
2273
2274 return 0;
2275 }
2276
2277 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2278 struct ieee80211_sub_if_data *sdata,
2279 struct ieee80211_channel *channel,
2280 unsigned int duration, u64 *cookie,
2281 struct sk_buff *txskb)
2282 {
2283 struct ieee80211_roc_work *roc, *tmp;
2284 bool queued = false;
2285 int ret;
2286
2287 lockdep_assert_held(&local->mtx);
2288
2289 if (local->use_chanctx && !local->ops->remain_on_channel)
2290 return -EOPNOTSUPP;
2291
2292 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2293 if (!roc)
2294 return -ENOMEM;
2295
2296 roc->chan = channel;
2297 roc->duration = duration;
2298 roc->req_duration = duration;
2299 roc->frame = txskb;
2300 roc->mgmt_tx_cookie = (unsigned long)txskb;
2301 roc->sdata = sdata;
2302 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2303 INIT_LIST_HEAD(&roc->dependents);
2304
2305 /* if there's one pending or we're scanning, queue this one */
2306 if (!list_empty(&local->roc_list) || local->scanning)
2307 goto out_check_combine;
2308
2309 /* if not HW assist, just queue & schedule work */
2310 if (!local->ops->remain_on_channel) {
2311 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2312 goto out_queue;
2313 }
2314
2315 /* otherwise actually kick it off here (for error handling) */
2316
2317 /*
2318 * If the duration is zero, then the driver
2319 * wouldn't actually do anything. Set it to
2320 * 10 for now.
2321 *
2322 * TODO: cancel the off-channel operation
2323 * when we get the SKB's TX status and
2324 * the wait time was zero before.
2325 */
2326 if (!duration)
2327 duration = 10;
2328
2329 ret = drv_remain_on_channel(local, sdata, channel, duration);
2330 if (ret) {
2331 kfree(roc);
2332 return ret;
2333 }
2334
2335 roc->started = true;
2336 goto out_queue;
2337
2338 out_check_combine:
2339 list_for_each_entry(tmp, &local->roc_list, list) {
2340 if (tmp->chan != channel || tmp->sdata != sdata)
2341 continue;
2342
2343 /*
2344 * Extend this ROC if possible:
2345 *
2346 * If it hasn't started yet, just increase the duration
2347 * and add the new one to the list of dependents.
2348 */
2349 if (!tmp->started) {
2350 list_add_tail(&roc->list, &tmp->dependents);
2351 tmp->duration = max(tmp->duration, roc->duration);
2352 queued = true;
2353 break;
2354 }
2355
2356 /* If it has already started, it's more difficult ... */
2357 if (local->ops->remain_on_channel) {
2358 unsigned long j = jiffies;
2359
2360 /*
2361 * In the offloaded ROC case, if it hasn't begun, add
2362 * this new one to the dependent list to be handled
2363 * when the the master one begins. If it has begun,
2364 * check that there's still a minimum time left and
2365 * if so, start this one, transmitting the frame, but
2366 * add it to the list directly after this one with a
2367 * a reduced time so we'll ask the driver to execute
2368 * it right after finishing the previous one, in the
2369 * hope that it'll also be executed right afterwards,
2370 * effectively extending the old one.
2371 * If there's no minimum time left, just add it to the
2372 * normal list.
2373 */
2374 if (!tmp->hw_begun) {
2375 list_add_tail(&roc->list, &tmp->dependents);
2376 queued = true;
2377 break;
2378 }
2379
2380 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2381 tmp->hw_start_time +
2382 msecs_to_jiffies(tmp->duration))) {
2383 int new_dur;
2384
2385 ieee80211_handle_roc_started(roc);
2386
2387 new_dur = roc->duration -
2388 jiffies_to_msecs(tmp->hw_start_time +
2389 msecs_to_jiffies(
2390 tmp->duration) -
2391 j);
2392
2393 if (new_dur > 0) {
2394 /* add right after tmp */
2395 list_add(&roc->list, &tmp->list);
2396 } else {
2397 list_add_tail(&roc->list,
2398 &tmp->dependents);
2399 }
2400 queued = true;
2401 }
2402 } else if (del_timer_sync(&tmp->work.timer)) {
2403 unsigned long new_end;
2404
2405 /*
2406 * In the software ROC case, cancel the timer, if
2407 * that fails then the finish work is already
2408 * queued/pending and thus we queue the new ROC
2409 * normally, if that succeeds then we can extend
2410 * the timer duration and TX the frame (if any.)
2411 */
2412
2413 list_add_tail(&roc->list, &tmp->dependents);
2414 queued = true;
2415
2416 new_end = jiffies + msecs_to_jiffies(roc->duration);
2417
2418 /* ok, it was started & we canceled timer */
2419 if (time_after(new_end, tmp->work.timer.expires))
2420 mod_timer(&tmp->work.timer, new_end);
2421 else
2422 add_timer(&tmp->work.timer);
2423
2424 ieee80211_handle_roc_started(roc);
2425 }
2426 break;
2427 }
2428
2429 out_queue:
2430 if (!queued)
2431 list_add_tail(&roc->list, &local->roc_list);
2432
2433 /*
2434 * cookie is either the roc cookie (for normal roc)
2435 * or the SKB (for mgmt TX)
2436 */
2437 if (!txskb) {
2438 /* local->mtx protects this */
2439 local->roc_cookie_counter++;
2440 roc->cookie = local->roc_cookie_counter;
2441 /* wow, you wrapped 64 bits ... more likely a bug */
2442 if (WARN_ON(roc->cookie == 0)) {
2443 roc->cookie = 1;
2444 local->roc_cookie_counter++;
2445 }
2446 *cookie = roc->cookie;
2447 } else {
2448 *cookie = (unsigned long)txskb;
2449 }
2450
2451 return 0;
2452 }
2453
2454 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2455 struct wireless_dev *wdev,
2456 struct ieee80211_channel *chan,
2457 unsigned int duration,
2458 u64 *cookie)
2459 {
2460 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2461 struct ieee80211_local *local = sdata->local;
2462 int ret;
2463
2464 mutex_lock(&local->mtx);
2465 ret = ieee80211_start_roc_work(local, sdata, chan,
2466 duration, cookie, NULL);
2467 mutex_unlock(&local->mtx);
2468
2469 return ret;
2470 }
2471
2472 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2473 u64 cookie, bool mgmt_tx)
2474 {
2475 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2476 int ret;
2477
2478 mutex_lock(&local->mtx);
2479 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2480 struct ieee80211_roc_work *dep, *tmp2;
2481
2482 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2483 if (!mgmt_tx && dep->cookie != cookie)
2484 continue;
2485 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2486 continue;
2487 /* found dependent item -- just remove it */
2488 list_del(&dep->list);
2489 mutex_unlock(&local->mtx);
2490
2491 ieee80211_roc_notify_destroy(dep);
2492 return 0;
2493 }
2494
2495 if (!mgmt_tx && roc->cookie != cookie)
2496 continue;
2497 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2498 continue;
2499
2500 found = roc;
2501 break;
2502 }
2503
2504 if (!found) {
2505 mutex_unlock(&local->mtx);
2506 return -ENOENT;
2507 }
2508
2509 /*
2510 * We found the item to cancel, so do that. Note that it
2511 * may have dependents, which we also cancel (and send
2512 * the expired signal for.) Not doing so would be quite
2513 * tricky here, but we may need to fix it later.
2514 */
2515
2516 if (local->ops->remain_on_channel) {
2517 if (found->started) {
2518 ret = drv_cancel_remain_on_channel(local);
2519 if (WARN_ON_ONCE(ret)) {
2520 mutex_unlock(&local->mtx);
2521 return ret;
2522 }
2523 }
2524
2525 list_del(&found->list);
2526
2527 if (found->started)
2528 ieee80211_start_next_roc(local);
2529 mutex_unlock(&local->mtx);
2530
2531 ieee80211_roc_notify_destroy(found);
2532 } else {
2533 /* work may be pending so use it all the time */
2534 found->abort = true;
2535 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2536
2537 mutex_unlock(&local->mtx);
2538
2539 /* work will clean up etc */
2540 flush_delayed_work(&found->work);
2541 }
2542
2543 return 0;
2544 }
2545
2546 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2547 struct wireless_dev *wdev,
2548 u64 cookie)
2549 {
2550 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2551 struct ieee80211_local *local = sdata->local;
2552
2553 return ieee80211_cancel_roc(local, cookie, false);
2554 }
2555
2556 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2557 struct ieee80211_channel *chan, bool offchan,
2558 unsigned int wait, const u8 *buf, size_t len,
2559 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2560 {
2561 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2562 struct ieee80211_local *local = sdata->local;
2563 struct sk_buff *skb;
2564 struct sta_info *sta;
2565 const struct ieee80211_mgmt *mgmt = (void *)buf;
2566 bool need_offchan = false;
2567 u32 flags;
2568 int ret;
2569
2570 if (dont_wait_for_ack)
2571 flags = IEEE80211_TX_CTL_NO_ACK;
2572 else
2573 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2574 IEEE80211_TX_CTL_REQ_TX_STATUS;
2575
2576 if (no_cck)
2577 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2578
2579 switch (sdata->vif.type) {
2580 case NL80211_IFTYPE_ADHOC:
2581 if (!sdata->vif.bss_conf.ibss_joined)
2582 need_offchan = true;
2583 /* fall through */
2584 #ifdef CONFIG_MAC80211_MESH
2585 case NL80211_IFTYPE_MESH_POINT:
2586 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2587 !sdata->u.mesh.mesh_id_len)
2588 need_offchan = true;
2589 /* fall through */
2590 #endif
2591 case NL80211_IFTYPE_AP:
2592 case NL80211_IFTYPE_AP_VLAN:
2593 case NL80211_IFTYPE_P2P_GO:
2594 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2595 !ieee80211_vif_is_mesh(&sdata->vif) &&
2596 !rcu_access_pointer(sdata->bss->beacon))
2597 need_offchan = true;
2598 if (!ieee80211_is_action(mgmt->frame_control) ||
2599 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2600 break;
2601 rcu_read_lock();
2602 sta = sta_info_get(sdata, mgmt->da);
2603 rcu_read_unlock();
2604 if (!sta)
2605 return -ENOLINK;
2606 break;
2607 case NL80211_IFTYPE_STATION:
2608 case NL80211_IFTYPE_P2P_CLIENT:
2609 if (!sdata->u.mgd.associated)
2610 need_offchan = true;
2611 break;
2612 case NL80211_IFTYPE_P2P_DEVICE:
2613 need_offchan = true;
2614 break;
2615 default:
2616 return -EOPNOTSUPP;
2617 }
2618
2619 mutex_lock(&local->mtx);
2620
2621 /* Check if the operating channel is the requested channel */
2622 if (!need_offchan) {
2623 struct ieee80211_chanctx_conf *chanctx_conf;
2624
2625 rcu_read_lock();
2626 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2627
2628 if (chanctx_conf)
2629 need_offchan = chan != chanctx_conf->def.chan;
2630 else
2631 need_offchan = true;
2632 rcu_read_unlock();
2633 }
2634
2635 if (need_offchan && !offchan) {
2636 ret = -EBUSY;
2637 goto out_unlock;
2638 }
2639
2640 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2641 if (!skb) {
2642 ret = -ENOMEM;
2643 goto out_unlock;
2644 }
2645 skb_reserve(skb, local->hw.extra_tx_headroom);
2646
2647 memcpy(skb_put(skb, len), buf, len);
2648
2649 IEEE80211_SKB_CB(skb)->flags = flags;
2650
2651 skb->dev = sdata->dev;
2652
2653 if (!need_offchan) {
2654 *cookie = (unsigned long) skb;
2655 ieee80211_tx_skb(sdata, skb);
2656 ret = 0;
2657 goto out_unlock;
2658 }
2659
2660 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2661 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2662 IEEE80211_SKB_CB(skb)->hw_queue =
2663 local->hw.offchannel_tx_hw_queue;
2664
2665 /* This will handle all kinds of coalescing and immediate TX */
2666 ret = ieee80211_start_roc_work(local, sdata, chan,
2667 wait, cookie, skb);
2668 if (ret)
2669 kfree_skb(skb);
2670 out_unlock:
2671 mutex_unlock(&local->mtx);
2672 return ret;
2673 }
2674
2675 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2676 struct wireless_dev *wdev,
2677 u64 cookie)
2678 {
2679 struct ieee80211_local *local = wiphy_priv(wiphy);
2680
2681 return ieee80211_cancel_roc(local, cookie, true);
2682 }
2683
2684 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2685 struct wireless_dev *wdev,
2686 u16 frame_type, bool reg)
2687 {
2688 struct ieee80211_local *local = wiphy_priv(wiphy);
2689 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2690
2691 switch (frame_type) {
2692 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2693 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2694 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2695
2696 if (reg)
2697 ifibss->auth_frame_registrations++;
2698 else
2699 ifibss->auth_frame_registrations--;
2700 }
2701 break;
2702 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2703 if (reg)
2704 local->probe_req_reg++;
2705 else
2706 local->probe_req_reg--;
2707
2708 if (!local->open_count)
2709 break;
2710
2711 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2712 break;
2713 default:
2714 break;
2715 }
2716 }
2717
2718 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2719 {
2720 struct ieee80211_local *local = wiphy_priv(wiphy);
2721
2722 if (local->started)
2723 return -EOPNOTSUPP;
2724
2725 return drv_set_antenna(local, tx_ant, rx_ant);
2726 }
2727
2728 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2729 {
2730 struct ieee80211_local *local = wiphy_priv(wiphy);
2731
2732 return drv_get_antenna(local, tx_ant, rx_ant);
2733 }
2734
2735 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2736 {
2737 struct ieee80211_local *local = wiphy_priv(wiphy);
2738
2739 return drv_set_ringparam(local, tx, rx);
2740 }
2741
2742 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2743 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2744 {
2745 struct ieee80211_local *local = wiphy_priv(wiphy);
2746
2747 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2748 }
2749
2750 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2751 struct net_device *dev,
2752 struct cfg80211_gtk_rekey_data *data)
2753 {
2754 struct ieee80211_local *local = wiphy_priv(wiphy);
2755 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2756
2757 if (!local->ops->set_rekey_data)
2758 return -EOPNOTSUPP;
2759
2760 drv_set_rekey_data(local, sdata, data);
2761
2762 return 0;
2763 }
2764
2765 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2766 {
2767 u8 *pos = (void *)skb_put(skb, 7);
2768
2769 *pos++ = WLAN_EID_EXT_CAPABILITY;
2770 *pos++ = 5; /* len */
2771 *pos++ = 0x0;
2772 *pos++ = 0x0;
2773 *pos++ = 0x0;
2774 *pos++ = 0x0;
2775 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2776 }
2777
2778 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2779 {
2780 struct ieee80211_local *local = sdata->local;
2781 u16 capab;
2782
2783 capab = 0;
2784 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2785 return capab;
2786
2787 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2788 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2789 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2790 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2791
2792 return capab;
2793 }
2794
2795 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2796 u8 *peer, u8 *bssid)
2797 {
2798 struct ieee80211_tdls_lnkie *lnkid;
2799
2800 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2801
2802 lnkid->ie_type = WLAN_EID_LINK_ID;
2803 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2804
2805 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2806 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2807 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2808 }
2809
2810 static int
2811 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2812 u8 *peer, u8 action_code, u8 dialog_token,
2813 u16 status_code, struct sk_buff *skb)
2814 {
2815 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2816 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2817 struct ieee80211_tdls_data *tf;
2818
2819 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2820
2821 memcpy(tf->da, peer, ETH_ALEN);
2822 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2823 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2824 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2825
2826 switch (action_code) {
2827 case WLAN_TDLS_SETUP_REQUEST:
2828 tf->category = WLAN_CATEGORY_TDLS;
2829 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2830
2831 skb_put(skb, sizeof(tf->u.setup_req));
2832 tf->u.setup_req.dialog_token = dialog_token;
2833 tf->u.setup_req.capability =
2834 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2835
2836 ieee80211_add_srates_ie(sdata, skb, false, band);
2837 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2838 ieee80211_tdls_add_ext_capab(skb);
2839 break;
2840 case WLAN_TDLS_SETUP_RESPONSE:
2841 tf->category = WLAN_CATEGORY_TDLS;
2842 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2843
2844 skb_put(skb, sizeof(tf->u.setup_resp));
2845 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2846 tf->u.setup_resp.dialog_token = dialog_token;
2847 tf->u.setup_resp.capability =
2848 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2849
2850 ieee80211_add_srates_ie(sdata, skb, false, band);
2851 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2852 ieee80211_tdls_add_ext_capab(skb);
2853 break;
2854 case WLAN_TDLS_SETUP_CONFIRM:
2855 tf->category = WLAN_CATEGORY_TDLS;
2856 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2857
2858 skb_put(skb, sizeof(tf->u.setup_cfm));
2859 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2860 tf->u.setup_cfm.dialog_token = dialog_token;
2861 break;
2862 case WLAN_TDLS_TEARDOWN:
2863 tf->category = WLAN_CATEGORY_TDLS;
2864 tf->action_code = WLAN_TDLS_TEARDOWN;
2865
2866 skb_put(skb, sizeof(tf->u.teardown));
2867 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2868 break;
2869 case WLAN_TDLS_DISCOVERY_REQUEST:
2870 tf->category = WLAN_CATEGORY_TDLS;
2871 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2872
2873 skb_put(skb, sizeof(tf->u.discover_req));
2874 tf->u.discover_req.dialog_token = dialog_token;
2875 break;
2876 default:
2877 return -EINVAL;
2878 }
2879
2880 return 0;
2881 }
2882
2883 static int
2884 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2885 u8 *peer, u8 action_code, u8 dialog_token,
2886 u16 status_code, struct sk_buff *skb)
2887 {
2888 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2889 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2890 struct ieee80211_mgmt *mgmt;
2891
2892 mgmt = (void *)skb_put(skb, 24);
2893 memset(mgmt, 0, 24);
2894 memcpy(mgmt->da, peer, ETH_ALEN);
2895 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2896 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2897
2898 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2899 IEEE80211_STYPE_ACTION);
2900
2901 switch (action_code) {
2902 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2903 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2904 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2905 mgmt->u.action.u.tdls_discover_resp.action_code =
2906 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2907 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2908 dialog_token;
2909 mgmt->u.action.u.tdls_discover_resp.capability =
2910 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2911
2912 ieee80211_add_srates_ie(sdata, skb, false, band);
2913 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2914 ieee80211_tdls_add_ext_capab(skb);
2915 break;
2916 default:
2917 return -EINVAL;
2918 }
2919
2920 return 0;
2921 }
2922
2923 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2924 u8 *peer, u8 action_code, u8 dialog_token,
2925 u16 status_code, const u8 *extra_ies,
2926 size_t extra_ies_len)
2927 {
2928 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2929 struct ieee80211_local *local = sdata->local;
2930 struct sk_buff *skb = NULL;
2931 bool send_direct;
2932 int ret;
2933
2934 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2935 return -ENOTSUPP;
2936
2937 /* make sure we are in managed mode, and associated */
2938 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2939 !sdata->u.mgd.associated)
2940 return -EINVAL;
2941
2942 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2943 action_code, peer);
2944
2945 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2946 max(sizeof(struct ieee80211_mgmt),
2947 sizeof(struct ieee80211_tdls_data)) +
2948 50 + /* supported rates */
2949 7 + /* ext capab */
2950 extra_ies_len +
2951 sizeof(struct ieee80211_tdls_lnkie));
2952 if (!skb)
2953 return -ENOMEM;
2954
2955 skb_reserve(skb, local->hw.extra_tx_headroom);
2956
2957 switch (action_code) {
2958 case WLAN_TDLS_SETUP_REQUEST:
2959 case WLAN_TDLS_SETUP_RESPONSE:
2960 case WLAN_TDLS_SETUP_CONFIRM:
2961 case WLAN_TDLS_TEARDOWN:
2962 case WLAN_TDLS_DISCOVERY_REQUEST:
2963 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2964 action_code, dialog_token,
2965 status_code, skb);
2966 send_direct = false;
2967 break;
2968 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2969 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2970 dialog_token, status_code,
2971 skb);
2972 send_direct = true;
2973 break;
2974 default:
2975 ret = -ENOTSUPP;
2976 break;
2977 }
2978
2979 if (ret < 0)
2980 goto fail;
2981
2982 if (extra_ies_len)
2983 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2984
2985 /* the TDLS link IE is always added last */
2986 switch (action_code) {
2987 case WLAN_TDLS_SETUP_REQUEST:
2988 case WLAN_TDLS_SETUP_CONFIRM:
2989 case WLAN_TDLS_TEARDOWN:
2990 case WLAN_TDLS_DISCOVERY_REQUEST:
2991 /* we are the initiator */
2992 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2993 sdata->u.mgd.bssid);
2994 break;
2995 case WLAN_TDLS_SETUP_RESPONSE:
2996 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2997 /* we are the responder */
2998 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2999 sdata->u.mgd.bssid);
3000 break;
3001 default:
3002 ret = -ENOTSUPP;
3003 goto fail;
3004 }
3005
3006 if (send_direct) {
3007 ieee80211_tx_skb(sdata, skb);
3008 return 0;
3009 }
3010
3011 /*
3012 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3013 * we should default to AC_VI.
3014 */
3015 switch (action_code) {
3016 case WLAN_TDLS_SETUP_REQUEST:
3017 case WLAN_TDLS_SETUP_RESPONSE:
3018 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3019 skb->priority = 2;
3020 break;
3021 default:
3022 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3023 skb->priority = 5;
3024 break;
3025 }
3026
3027 /* disable bottom halves when entering the Tx path */
3028 local_bh_disable();
3029 ret = ieee80211_subif_start_xmit(skb, dev);
3030 local_bh_enable();
3031
3032 return ret;
3033
3034 fail:
3035 dev_kfree_skb(skb);
3036 return ret;
3037 }
3038
3039 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3040 u8 *peer, enum nl80211_tdls_operation oper)
3041 {
3042 struct sta_info *sta;
3043 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3044
3045 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3046 return -ENOTSUPP;
3047
3048 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3049 return -EINVAL;
3050
3051 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3052
3053 switch (oper) {
3054 case NL80211_TDLS_ENABLE_LINK:
3055 rcu_read_lock();
3056 sta = sta_info_get(sdata, peer);
3057 if (!sta) {
3058 rcu_read_unlock();
3059 return -ENOLINK;
3060 }
3061
3062 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3063 rcu_read_unlock();
3064 break;
3065 case NL80211_TDLS_DISABLE_LINK:
3066 return sta_info_destroy_addr(sdata, peer);
3067 case NL80211_TDLS_TEARDOWN:
3068 case NL80211_TDLS_SETUP:
3069 case NL80211_TDLS_DISCOVERY_REQ:
3070 /* We don't support in-driver setup/teardown/discovery */
3071 return -ENOTSUPP;
3072 default:
3073 return -ENOTSUPP;
3074 }
3075
3076 return 0;
3077 }
3078
3079 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3080 const u8 *peer, u64 *cookie)
3081 {
3082 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3083 struct ieee80211_local *local = sdata->local;
3084 struct ieee80211_qos_hdr *nullfunc;
3085 struct sk_buff *skb;
3086 int size = sizeof(*nullfunc);
3087 __le16 fc;
3088 bool qos;
3089 struct ieee80211_tx_info *info;
3090 struct sta_info *sta;
3091 struct ieee80211_chanctx_conf *chanctx_conf;
3092 enum ieee80211_band band;
3093
3094 rcu_read_lock();
3095 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3096 if (WARN_ON(!chanctx_conf)) {
3097 rcu_read_unlock();
3098 return -EINVAL;
3099 }
3100 band = chanctx_conf->def.chan->band;
3101 sta = sta_info_get(sdata, peer);
3102 if (sta) {
3103 qos = test_sta_flag(sta, WLAN_STA_WME);
3104 } else {
3105 rcu_read_unlock();
3106 return -ENOLINK;
3107 }
3108
3109 if (qos) {
3110 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3111 IEEE80211_STYPE_QOS_NULLFUNC |
3112 IEEE80211_FCTL_FROMDS);
3113 } else {
3114 size -= 2;
3115 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3116 IEEE80211_STYPE_NULLFUNC |
3117 IEEE80211_FCTL_FROMDS);
3118 }
3119
3120 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3121 if (!skb) {
3122 rcu_read_unlock();
3123 return -ENOMEM;
3124 }
3125
3126 skb->dev = dev;
3127
3128 skb_reserve(skb, local->hw.extra_tx_headroom);
3129
3130 nullfunc = (void *) skb_put(skb, size);
3131 nullfunc->frame_control = fc;
3132 nullfunc->duration_id = 0;
3133 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3134 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3135 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3136 nullfunc->seq_ctrl = 0;
3137
3138 info = IEEE80211_SKB_CB(skb);
3139
3140 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3141 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3142
3143 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3144 skb->priority = 7;
3145 if (qos)
3146 nullfunc->qos_ctrl = cpu_to_le16(7);
3147
3148 local_bh_disable();
3149 ieee80211_xmit(sdata, skb, band);
3150 local_bh_enable();
3151 rcu_read_unlock();
3152
3153 *cookie = (unsigned long) skb;
3154 return 0;
3155 }
3156
3157 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3158 struct wireless_dev *wdev,
3159 struct cfg80211_chan_def *chandef)
3160 {
3161 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3162 struct ieee80211_chanctx_conf *chanctx_conf;
3163 int ret = -ENODATA;
3164
3165 rcu_read_lock();
3166 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3167 if (chanctx_conf) {
3168 *chandef = chanctx_conf->def;
3169 ret = 0;
3170 }
3171 rcu_read_unlock();
3172
3173 return ret;
3174 }
3175
3176 #ifdef CONFIG_PM
3177 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3178 {
3179 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3180 }
3181 #endif
3182
3183 struct cfg80211_ops mac80211_config_ops = {
3184 .add_virtual_intf = ieee80211_add_iface,
3185 .del_virtual_intf = ieee80211_del_iface,
3186 .change_virtual_intf = ieee80211_change_iface,
3187 .start_p2p_device = ieee80211_start_p2p_device,
3188 .stop_p2p_device = ieee80211_stop_p2p_device,
3189 .add_key = ieee80211_add_key,
3190 .del_key = ieee80211_del_key,
3191 .get_key = ieee80211_get_key,
3192 .set_default_key = ieee80211_config_default_key,
3193 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3194 .start_ap = ieee80211_start_ap,
3195 .change_beacon = ieee80211_change_beacon,
3196 .stop_ap = ieee80211_stop_ap,
3197 .add_station = ieee80211_add_station,
3198 .del_station = ieee80211_del_station,
3199 .change_station = ieee80211_change_station,
3200 .get_station = ieee80211_get_station,
3201 .dump_station = ieee80211_dump_station,
3202 .dump_survey = ieee80211_dump_survey,
3203 #ifdef CONFIG_MAC80211_MESH
3204 .add_mpath = ieee80211_add_mpath,
3205 .del_mpath = ieee80211_del_mpath,
3206 .change_mpath = ieee80211_change_mpath,
3207 .get_mpath = ieee80211_get_mpath,
3208 .dump_mpath = ieee80211_dump_mpath,
3209 .update_mesh_config = ieee80211_update_mesh_config,
3210 .get_mesh_config = ieee80211_get_mesh_config,
3211 .join_mesh = ieee80211_join_mesh,
3212 .leave_mesh = ieee80211_leave_mesh,
3213 #endif
3214 .change_bss = ieee80211_change_bss,
3215 .set_txq_params = ieee80211_set_txq_params,
3216 .set_monitor_channel = ieee80211_set_monitor_channel,
3217 .suspend = ieee80211_suspend,
3218 .resume = ieee80211_resume,
3219 .scan = ieee80211_scan,
3220 .sched_scan_start = ieee80211_sched_scan_start,
3221 .sched_scan_stop = ieee80211_sched_scan_stop,
3222 .auth = ieee80211_auth,
3223 .assoc = ieee80211_assoc,
3224 .deauth = ieee80211_deauth,
3225 .disassoc = ieee80211_disassoc,
3226 .join_ibss = ieee80211_join_ibss,
3227 .leave_ibss = ieee80211_leave_ibss,
3228 .set_mcast_rate = ieee80211_set_mcast_rate,
3229 .set_wiphy_params = ieee80211_set_wiphy_params,
3230 .set_tx_power = ieee80211_set_tx_power,
3231 .get_tx_power = ieee80211_get_tx_power,
3232 .set_wds_peer = ieee80211_set_wds_peer,
3233 .rfkill_poll = ieee80211_rfkill_poll,
3234 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3235 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3236 .set_power_mgmt = ieee80211_set_power_mgmt,
3237 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3238 .remain_on_channel = ieee80211_remain_on_channel,
3239 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3240 .mgmt_tx = ieee80211_mgmt_tx,
3241 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3242 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3243 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3244 .set_antenna = ieee80211_set_antenna,
3245 .get_antenna = ieee80211_get_antenna,
3246 .set_ringparam = ieee80211_set_ringparam,
3247 .get_ringparam = ieee80211_get_ringparam,
3248 .set_rekey_data = ieee80211_set_rekey_data,
3249 .tdls_oper = ieee80211_tdls_oper,
3250 .tdls_mgmt = ieee80211_tdls_mgmt,
3251 .probe_client = ieee80211_probe_client,
3252 .set_noack_map = ieee80211_set_noack_map,
3253 #ifdef CONFIG_PM
3254 .set_wakeup = ieee80211_set_wakeup,
3255 #endif
3256 .get_et_sset_count = ieee80211_get_et_sset_count,
3257 .get_et_stats = ieee80211_get_et_stats,
3258 .get_et_strings = ieee80211_get_et_strings,
3259 .get_channel = ieee80211_cfg_get_channel,
3260 };
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree