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mac80211: Use mandatory rates as basic rates when starting mesh
[mirror_ubuntu-bionic-kernel.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
24 enum nl80211_iftype type,
25 u32 *flags,
26 struct vif_params *params)
27 {
28 struct ieee80211_local *local = wiphy_priv(wiphy);
29 struct net_device *dev;
30 struct ieee80211_sub_if_data *sdata;
31 int err;
32
33 err = ieee80211_if_add(local, name, &dev, type, params);
34 if (err)
35 return ERR_PTR(err);
36
37 if (type == NL80211_IFTYPE_MONITOR && flags) {
38 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
39 sdata->u.mntr_flags = *flags;
40 }
41
42 return dev;
43 }
44
45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
46 {
47 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
48
49 return 0;
50 }
51
52 static int ieee80211_change_iface(struct wiphy *wiphy,
53 struct net_device *dev,
54 enum nl80211_iftype type, u32 *flags,
55 struct vif_params *params)
56 {
57 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
58 int ret;
59
60 ret = ieee80211_if_change_type(sdata, type);
61 if (ret)
62 return ret;
63
64 if (type == NL80211_IFTYPE_AP_VLAN &&
65 params && params->use_4addr == 0)
66 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
67 else if (type == NL80211_IFTYPE_STATION &&
68 params && params->use_4addr >= 0)
69 sdata->u.mgd.use_4addr = params->use_4addr;
70
71 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
72 struct ieee80211_local *local = sdata->local;
73
74 if (ieee80211_sdata_running(sdata)) {
75 /*
76 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
77 * changed while the interface is up.
78 * Else we would need to add a lot of cruft
79 * to update everything:
80 * cooked_mntrs, monitor and all fif_* counters
81 * reconfigure hardware
82 */
83 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
84 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
85 return -EBUSY;
86
87 ieee80211_adjust_monitor_flags(sdata, -1);
88 sdata->u.mntr_flags = *flags;
89 ieee80211_adjust_monitor_flags(sdata, 1);
90
91 ieee80211_configure_filter(local);
92 } else {
93 /*
94 * Because the interface is down, ieee80211_do_stop
95 * and ieee80211_do_open take care of "everything"
96 * mentioned in the comment above.
97 */
98 sdata->u.mntr_flags = *flags;
99 }
100 }
101
102 return 0;
103 }
104
105 static int ieee80211_set_noack_map(struct wiphy *wiphy,
106 struct net_device *dev,
107 u16 noack_map)
108 {
109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
110
111 sdata->noack_map = noack_map;
112 return 0;
113 }
114
115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
116 u8 key_idx, bool pairwise, const u8 *mac_addr,
117 struct key_params *params)
118 {
119 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
120 struct sta_info *sta = NULL;
121 struct ieee80211_key *key;
122 int err;
123
124 if (!ieee80211_sdata_running(sdata))
125 return -ENETDOWN;
126
127 /* reject WEP and TKIP keys if WEP failed to initialize */
128 switch (params->cipher) {
129 case WLAN_CIPHER_SUITE_WEP40:
130 case WLAN_CIPHER_SUITE_TKIP:
131 case WLAN_CIPHER_SUITE_WEP104:
132 if (IS_ERR(sdata->local->wep_tx_tfm))
133 return -EINVAL;
134 break;
135 default:
136 break;
137 }
138
139 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
140 params->key, params->seq_len, params->seq);
141 if (IS_ERR(key))
142 return PTR_ERR(key);
143
144 if (pairwise)
145 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
146
147 mutex_lock(&sdata->local->sta_mtx);
148
149 if (mac_addr) {
150 if (ieee80211_vif_is_mesh(&sdata->vif))
151 sta = sta_info_get(sdata, mac_addr);
152 else
153 sta = sta_info_get_bss(sdata, mac_addr);
154 if (!sta) {
155 ieee80211_key_free(sdata->local, key);
156 err = -ENOENT;
157 goto out_unlock;
158 }
159 }
160
161 err = ieee80211_key_link(key, sdata, sta);
162 if (err)
163 ieee80211_key_free(sdata->local, key);
164
165 out_unlock:
166 mutex_unlock(&sdata->local->sta_mtx);
167
168 return err;
169 }
170
171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
172 u8 key_idx, bool pairwise, const u8 *mac_addr)
173 {
174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
175 struct ieee80211_local *local = sdata->local;
176 struct sta_info *sta;
177 struct ieee80211_key *key = NULL;
178 int ret;
179
180 mutex_lock(&local->sta_mtx);
181 mutex_lock(&local->key_mtx);
182
183 if (mac_addr) {
184 ret = -ENOENT;
185
186 sta = sta_info_get_bss(sdata, mac_addr);
187 if (!sta)
188 goto out_unlock;
189
190 if (pairwise)
191 key = key_mtx_dereference(local, sta->ptk);
192 else
193 key = key_mtx_dereference(local, sta->gtk[key_idx]);
194 } else
195 key = key_mtx_dereference(local, sdata->keys[key_idx]);
196
197 if (!key) {
198 ret = -ENOENT;
199 goto out_unlock;
200 }
201
202 __ieee80211_key_free(key);
203
204 ret = 0;
205 out_unlock:
206 mutex_unlock(&local->key_mtx);
207 mutex_unlock(&local->sta_mtx);
208
209 return ret;
210 }
211
212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
213 u8 key_idx, bool pairwise, const u8 *mac_addr,
214 void *cookie,
215 void (*callback)(void *cookie,
216 struct key_params *params))
217 {
218 struct ieee80211_sub_if_data *sdata;
219 struct sta_info *sta = NULL;
220 u8 seq[6] = {0};
221 struct key_params params;
222 struct ieee80211_key *key = NULL;
223 u64 pn64;
224 u32 iv32;
225 u16 iv16;
226 int err = -ENOENT;
227
228 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
229
230 rcu_read_lock();
231
232 if (mac_addr) {
233 sta = sta_info_get_bss(sdata, mac_addr);
234 if (!sta)
235 goto out;
236
237 if (pairwise)
238 key = rcu_dereference(sta->ptk);
239 else if (key_idx < NUM_DEFAULT_KEYS)
240 key = rcu_dereference(sta->gtk[key_idx]);
241 } else
242 key = rcu_dereference(sdata->keys[key_idx]);
243
244 if (!key)
245 goto out;
246
247 memset(&params, 0, sizeof(params));
248
249 params.cipher = key->conf.cipher;
250
251 switch (key->conf.cipher) {
252 case WLAN_CIPHER_SUITE_TKIP:
253 iv32 = key->u.tkip.tx.iv32;
254 iv16 = key->u.tkip.tx.iv16;
255
256 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
257 drv_get_tkip_seq(sdata->local,
258 key->conf.hw_key_idx,
259 &iv32, &iv16);
260
261 seq[0] = iv16 & 0xff;
262 seq[1] = (iv16 >> 8) & 0xff;
263 seq[2] = iv32 & 0xff;
264 seq[3] = (iv32 >> 8) & 0xff;
265 seq[4] = (iv32 >> 16) & 0xff;
266 seq[5] = (iv32 >> 24) & 0xff;
267 params.seq = seq;
268 params.seq_len = 6;
269 break;
270 case WLAN_CIPHER_SUITE_CCMP:
271 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
272 seq[0] = pn64;
273 seq[1] = pn64 >> 8;
274 seq[2] = pn64 >> 16;
275 seq[3] = pn64 >> 24;
276 seq[4] = pn64 >> 32;
277 seq[5] = pn64 >> 40;
278 params.seq = seq;
279 params.seq_len = 6;
280 break;
281 case WLAN_CIPHER_SUITE_AES_CMAC:
282 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
283 seq[0] = pn64;
284 seq[1] = pn64 >> 8;
285 seq[2] = pn64 >> 16;
286 seq[3] = pn64 >> 24;
287 seq[4] = pn64 >> 32;
288 seq[5] = pn64 >> 40;
289 params.seq = seq;
290 params.seq_len = 6;
291 break;
292 }
293
294 params.key = key->conf.key;
295 params.key_len = key->conf.keylen;
296
297 callback(cookie, &params);
298 err = 0;
299
300 out:
301 rcu_read_unlock();
302 return err;
303 }
304
305 static int ieee80211_config_default_key(struct wiphy *wiphy,
306 struct net_device *dev,
307 u8 key_idx, bool uni,
308 bool multi)
309 {
310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
311
312 ieee80211_set_default_key(sdata, key_idx, uni, multi);
313
314 return 0;
315 }
316
317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
318 struct net_device *dev,
319 u8 key_idx)
320 {
321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
322
323 ieee80211_set_default_mgmt_key(sdata, key_idx);
324
325 return 0;
326 }
327
328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
329 {
330 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
331 struct ieee80211_supported_band *sband;
332 sband = sta->local->hw.wiphy->bands[
333 sta->local->hw.conf.channel->band];
334 rate->legacy = sband->bitrates[idx].bitrate;
335 } else
336 rate->mcs = idx;
337 }
338
339 void sta_set_rate_info_tx(struct sta_info *sta,
340 const struct ieee80211_tx_rate *rate,
341 struct rate_info *rinfo)
342 {
343 rinfo->flags = 0;
344 if (rate->flags & IEEE80211_TX_RC_MCS)
345 rinfo->flags |= RATE_INFO_FLAGS_MCS;
346 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
347 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
348 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
349 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
350 rate_idx_to_bitrate(rinfo, sta, rate->idx);
351 }
352
353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
354 {
355 struct ieee80211_sub_if_data *sdata = sta->sdata;
356 struct timespec uptime;
357
358 sinfo->generation = sdata->local->sta_generation;
359
360 sinfo->filled = STATION_INFO_INACTIVE_TIME |
361 STATION_INFO_RX_BYTES |
362 STATION_INFO_TX_BYTES |
363 STATION_INFO_RX_PACKETS |
364 STATION_INFO_TX_PACKETS |
365 STATION_INFO_TX_RETRIES |
366 STATION_INFO_TX_FAILED |
367 STATION_INFO_TX_BITRATE |
368 STATION_INFO_RX_BITRATE |
369 STATION_INFO_RX_DROP_MISC |
370 STATION_INFO_BSS_PARAM |
371 STATION_INFO_CONNECTED_TIME |
372 STATION_INFO_STA_FLAGS |
373 STATION_INFO_BEACON_LOSS_COUNT;
374
375 do_posix_clock_monotonic_gettime(&uptime);
376 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
377
378 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
379 sinfo->rx_bytes = sta->rx_bytes;
380 sinfo->tx_bytes = sta->tx_bytes;
381 sinfo->rx_packets = sta->rx_packets;
382 sinfo->tx_packets = sta->tx_packets;
383 sinfo->tx_retries = sta->tx_retry_count;
384 sinfo->tx_failed = sta->tx_retry_failed;
385 sinfo->rx_dropped_misc = sta->rx_dropped;
386 sinfo->beacon_loss_count = sta->beacon_loss_count;
387
388 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
389 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
390 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
391 sinfo->signal = (s8)sta->last_signal;
392 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
393 }
394
395 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
396
397 sinfo->rxrate.flags = 0;
398 if (sta->last_rx_rate_flag & RX_FLAG_HT)
399 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
400 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
401 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
402 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
403 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
404 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
405
406 if (ieee80211_vif_is_mesh(&sdata->vif)) {
407 #ifdef CONFIG_MAC80211_MESH
408 sinfo->filled |= STATION_INFO_LLID |
409 STATION_INFO_PLID |
410 STATION_INFO_PLINK_STATE;
411
412 sinfo->llid = le16_to_cpu(sta->llid);
413 sinfo->plid = le16_to_cpu(sta->plid);
414 sinfo->plink_state = sta->plink_state;
415 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
416 sinfo->filled |= STATION_INFO_T_OFFSET;
417 sinfo->t_offset = sta->t_offset;
418 }
419 #endif
420 }
421
422 sinfo->bss_param.flags = 0;
423 if (sdata->vif.bss_conf.use_cts_prot)
424 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
425 if (sdata->vif.bss_conf.use_short_preamble)
426 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
427 if (sdata->vif.bss_conf.use_short_slot)
428 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
429 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
430 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
431
432 sinfo->sta_flags.set = 0;
433 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
434 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
435 BIT(NL80211_STA_FLAG_WME) |
436 BIT(NL80211_STA_FLAG_MFP) |
437 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
438 BIT(NL80211_STA_FLAG_TDLS_PEER);
439 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
440 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
441 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
442 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
443 if (test_sta_flag(sta, WLAN_STA_WME))
444 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
445 if (test_sta_flag(sta, WLAN_STA_MFP))
446 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
447 if (test_sta_flag(sta, WLAN_STA_AUTH))
448 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
449 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
450 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
451 }
452
453
454 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
455 int idx, u8 *mac, struct station_info *sinfo)
456 {
457 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
458 struct sta_info *sta;
459 int ret = -ENOENT;
460
461 rcu_read_lock();
462
463 sta = sta_info_get_by_idx(sdata, idx);
464 if (sta) {
465 ret = 0;
466 memcpy(mac, sta->sta.addr, ETH_ALEN);
467 sta_set_sinfo(sta, sinfo);
468 }
469
470 rcu_read_unlock();
471
472 return ret;
473 }
474
475 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
476 int idx, struct survey_info *survey)
477 {
478 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
479
480 return drv_get_survey(local, idx, survey);
481 }
482
483 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
484 u8 *mac, struct station_info *sinfo)
485 {
486 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
487 struct sta_info *sta;
488 int ret = -ENOENT;
489
490 rcu_read_lock();
491
492 sta = sta_info_get_bss(sdata, mac);
493 if (sta) {
494 ret = 0;
495 sta_set_sinfo(sta, sinfo);
496 }
497
498 rcu_read_unlock();
499
500 return ret;
501 }
502
503 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
504 const u8 *resp, size_t resp_len)
505 {
506 struct sk_buff *new, *old;
507
508 if (!resp || !resp_len)
509 return 1;
510
511 old = rtnl_dereference(sdata->u.ap.probe_resp);
512
513 new = dev_alloc_skb(resp_len);
514 if (!new)
515 return -ENOMEM;
516
517 memcpy(skb_put(new, resp_len), resp, resp_len);
518
519 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
520 if (old) {
521 /* TODO: use call_rcu() */
522 synchronize_rcu();
523 dev_kfree_skb(old);
524 }
525
526 return 0;
527 }
528
529 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
530 struct cfg80211_beacon_data *params)
531 {
532 struct beacon_data *new, *old;
533 int new_head_len, new_tail_len;
534 int size, err;
535 u32 changed = BSS_CHANGED_BEACON;
536
537 old = rtnl_dereference(sdata->u.ap.beacon);
538
539 /* Need to have a beacon head if we don't have one yet */
540 if (!params->head && !old)
541 return -EINVAL;
542
543 /* new or old head? */
544 if (params->head)
545 new_head_len = params->head_len;
546 else
547 new_head_len = old->head_len;
548
549 /* new or old tail? */
550 if (params->tail || !old)
551 /* params->tail_len will be zero for !params->tail */
552 new_tail_len = params->tail_len;
553 else
554 new_tail_len = old->tail_len;
555
556 size = sizeof(*new) + new_head_len + new_tail_len;
557
558 new = kzalloc(size, GFP_KERNEL);
559 if (!new)
560 return -ENOMEM;
561
562 /* start filling the new info now */
563
564 /*
565 * pointers go into the block we allocated,
566 * memory is | beacon_data | head | tail |
567 */
568 new->head = ((u8 *) new) + sizeof(*new);
569 new->tail = new->head + new_head_len;
570 new->head_len = new_head_len;
571 new->tail_len = new_tail_len;
572
573 /* copy in head */
574 if (params->head)
575 memcpy(new->head, params->head, new_head_len);
576 else
577 memcpy(new->head, old->head, new_head_len);
578
579 /* copy in optional tail */
580 if (params->tail)
581 memcpy(new->tail, params->tail, new_tail_len);
582 else
583 if (old)
584 memcpy(new->tail, old->tail, new_tail_len);
585
586 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
587 params->probe_resp_len);
588 if (err < 0)
589 return err;
590 if (err == 0)
591 changed |= BSS_CHANGED_AP_PROBE_RESP;
592
593 rcu_assign_pointer(sdata->u.ap.beacon, new);
594
595 if (old)
596 kfree_rcu(old, rcu_head);
597
598 return changed;
599 }
600
601 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
602 struct cfg80211_ap_settings *params)
603 {
604 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
605 struct beacon_data *old;
606 struct ieee80211_sub_if_data *vlan;
607 u32 changed = BSS_CHANGED_BEACON_INT |
608 BSS_CHANGED_BEACON_ENABLED |
609 BSS_CHANGED_BEACON |
610 BSS_CHANGED_SSID;
611 int err;
612
613 old = rtnl_dereference(sdata->u.ap.beacon);
614 if (old)
615 return -EALREADY;
616
617 /*
618 * Apply control port protocol, this allows us to
619 * not encrypt dynamic WEP control frames.
620 */
621 sdata->control_port_protocol = params->crypto.control_port_ethertype;
622 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
623 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
624 vlan->control_port_protocol =
625 params->crypto.control_port_ethertype;
626 vlan->control_port_no_encrypt =
627 params->crypto.control_port_no_encrypt;
628 }
629
630 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
631 sdata->vif.bss_conf.dtim_period = params->dtim_period;
632
633 sdata->vif.bss_conf.ssid_len = params->ssid_len;
634 if (params->ssid_len)
635 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
636 params->ssid_len);
637 sdata->vif.bss_conf.hidden_ssid =
638 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
639
640 err = ieee80211_assign_beacon(sdata, &params->beacon);
641 if (err < 0)
642 return err;
643 changed |= err;
644
645 ieee80211_bss_info_change_notify(sdata, changed);
646
647 return 0;
648 }
649
650 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
651 struct cfg80211_beacon_data *params)
652 {
653 struct ieee80211_sub_if_data *sdata;
654 struct beacon_data *old;
655 int err;
656
657 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
658
659 old = rtnl_dereference(sdata->u.ap.beacon);
660 if (!old)
661 return -ENOENT;
662
663 err = ieee80211_assign_beacon(sdata, params);
664 if (err < 0)
665 return err;
666 ieee80211_bss_info_change_notify(sdata, err);
667 return 0;
668 }
669
670 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
671 {
672 struct ieee80211_sub_if_data *sdata;
673 struct beacon_data *old;
674
675 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
676
677 old = rtnl_dereference(sdata->u.ap.beacon);
678 if (!old)
679 return -ENOENT;
680
681 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
682
683 kfree_rcu(old, rcu_head);
684
685 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
686
687 return 0;
688 }
689
690 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
691 struct iapp_layer2_update {
692 u8 da[ETH_ALEN]; /* broadcast */
693 u8 sa[ETH_ALEN]; /* STA addr */
694 __be16 len; /* 6 */
695 u8 dsap; /* 0 */
696 u8 ssap; /* 0 */
697 u8 control;
698 u8 xid_info[3];
699 } __packed;
700
701 static void ieee80211_send_layer2_update(struct sta_info *sta)
702 {
703 struct iapp_layer2_update *msg;
704 struct sk_buff *skb;
705
706 /* Send Level 2 Update Frame to update forwarding tables in layer 2
707 * bridge devices */
708
709 skb = dev_alloc_skb(sizeof(*msg));
710 if (!skb)
711 return;
712 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
713
714 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
715 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
716
717 memset(msg->da, 0xff, ETH_ALEN);
718 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
719 msg->len = htons(6);
720 msg->dsap = 0;
721 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
722 msg->control = 0xaf; /* XID response lsb.1111F101.
723 * F=0 (no poll command; unsolicited frame) */
724 msg->xid_info[0] = 0x81; /* XID format identifier */
725 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
726 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
727
728 skb->dev = sta->sdata->dev;
729 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
730 memset(skb->cb, 0, sizeof(skb->cb));
731 netif_rx_ni(skb);
732 }
733
734 static int sta_apply_parameters(struct ieee80211_local *local,
735 struct sta_info *sta,
736 struct station_parameters *params)
737 {
738 int ret = 0;
739 u32 rates;
740 int i, j;
741 struct ieee80211_supported_band *sband;
742 struct ieee80211_sub_if_data *sdata = sta->sdata;
743 u32 mask, set;
744
745 sband = local->hw.wiphy->bands[local->oper_channel->band];
746
747 mask = params->sta_flags_mask;
748 set = params->sta_flags_set;
749
750 /*
751 * In mesh mode, we can clear AUTHENTICATED flag but must
752 * also make ASSOCIATED follow appropriately for the driver
753 * API. See also below, after AUTHORIZED changes.
754 */
755 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
756 /* cfg80211 should not allow this in non-mesh modes */
757 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
758 return -EINVAL;
759
760 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
761 !test_sta_flag(sta, WLAN_STA_AUTH)) {
762 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
763 if (ret)
764 return ret;
765 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
766 if (ret)
767 return ret;
768 }
769 }
770
771 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
772 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
773 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
774 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
775 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
776 if (ret)
777 return ret;
778 }
779
780 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
781 /* cfg80211 should not allow this in non-mesh modes */
782 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
783 return -EINVAL;
784
785 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
786 test_sta_flag(sta, WLAN_STA_AUTH)) {
787 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
788 if (ret)
789 return ret;
790 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
791 if (ret)
792 return ret;
793 }
794 }
795
796
797 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
798 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
799 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
800 else
801 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
802 }
803
804 if (mask & BIT(NL80211_STA_FLAG_WME)) {
805 if (set & BIT(NL80211_STA_FLAG_WME)) {
806 set_sta_flag(sta, WLAN_STA_WME);
807 sta->sta.wme = true;
808 } else {
809 clear_sta_flag(sta, WLAN_STA_WME);
810 sta->sta.wme = false;
811 }
812 }
813
814 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
815 if (set & BIT(NL80211_STA_FLAG_MFP))
816 set_sta_flag(sta, WLAN_STA_MFP);
817 else
818 clear_sta_flag(sta, WLAN_STA_MFP);
819 }
820
821 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
822 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
823 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
824 else
825 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
826 }
827
828 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
829 sta->sta.uapsd_queues = params->uapsd_queues;
830 sta->sta.max_sp = params->max_sp;
831 }
832
833 /*
834 * cfg80211 validates this (1-2007) and allows setting the AID
835 * only when creating a new station entry
836 */
837 if (params->aid)
838 sta->sta.aid = params->aid;
839
840 /*
841 * FIXME: updating the following information is racy when this
842 * function is called from ieee80211_change_station().
843 * However, all this information should be static so
844 * maybe we should just reject attemps to change it.
845 */
846
847 if (params->listen_interval >= 0)
848 sta->listen_interval = params->listen_interval;
849
850 if (params->supported_rates) {
851 rates = 0;
852
853 for (i = 0; i < params->supported_rates_len; i++) {
854 int rate = (params->supported_rates[i] & 0x7f) * 5;
855 for (j = 0; j < sband->n_bitrates; j++) {
856 if (sband->bitrates[j].bitrate == rate)
857 rates |= BIT(j);
858 }
859 }
860 sta->sta.supp_rates[local->oper_channel->band] = rates;
861 }
862
863 if (params->ht_capa)
864 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
865 params->ht_capa,
866 &sta->sta.ht_cap);
867
868 if (ieee80211_vif_is_mesh(&sdata->vif)) {
869 #ifdef CONFIG_MAC80211_MESH
870 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
871 switch (params->plink_state) {
872 case NL80211_PLINK_LISTEN:
873 case NL80211_PLINK_ESTAB:
874 case NL80211_PLINK_BLOCKED:
875 sta->plink_state = params->plink_state;
876 break;
877 default:
878 /* nothing */
879 break;
880 }
881 else
882 switch (params->plink_action) {
883 case PLINK_ACTION_OPEN:
884 mesh_plink_open(sta);
885 break;
886 case PLINK_ACTION_BLOCK:
887 mesh_plink_block(sta);
888 break;
889 }
890 #endif
891 }
892
893 return 0;
894 }
895
896 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
897 u8 *mac, struct station_parameters *params)
898 {
899 struct ieee80211_local *local = wiphy_priv(wiphy);
900 struct sta_info *sta;
901 struct ieee80211_sub_if_data *sdata;
902 int err;
903 int layer2_update;
904
905 if (params->vlan) {
906 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
907
908 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
909 sdata->vif.type != NL80211_IFTYPE_AP)
910 return -EINVAL;
911 } else
912 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
913
914 if (compare_ether_addr(mac, sdata->vif.addr) == 0)
915 return -EINVAL;
916
917 if (is_multicast_ether_addr(mac))
918 return -EINVAL;
919
920 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
921 if (!sta)
922 return -ENOMEM;
923
924 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
925 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
926
927 err = sta_apply_parameters(local, sta, params);
928 if (err) {
929 sta_info_free(local, sta);
930 return err;
931 }
932
933 /*
934 * for TDLS, rate control should be initialized only when supported
935 * rates are known.
936 */
937 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
938 rate_control_rate_init(sta);
939
940 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
941 sdata->vif.type == NL80211_IFTYPE_AP;
942
943 err = sta_info_insert_rcu(sta);
944 if (err) {
945 rcu_read_unlock();
946 return err;
947 }
948
949 if (layer2_update)
950 ieee80211_send_layer2_update(sta);
951
952 rcu_read_unlock();
953
954 return 0;
955 }
956
957 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
958 u8 *mac)
959 {
960 struct ieee80211_local *local = wiphy_priv(wiphy);
961 struct ieee80211_sub_if_data *sdata;
962
963 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
964
965 if (mac)
966 return sta_info_destroy_addr_bss(sdata, mac);
967
968 sta_info_flush(local, sdata);
969 return 0;
970 }
971
972 static int ieee80211_change_station(struct wiphy *wiphy,
973 struct net_device *dev,
974 u8 *mac,
975 struct station_parameters *params)
976 {
977 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
978 struct ieee80211_local *local = wiphy_priv(wiphy);
979 struct sta_info *sta;
980 struct ieee80211_sub_if_data *vlansdata;
981 int err;
982
983 mutex_lock(&local->sta_mtx);
984
985 sta = sta_info_get_bss(sdata, mac);
986 if (!sta) {
987 mutex_unlock(&local->sta_mtx);
988 return -ENOENT;
989 }
990
991 /* in station mode, supported rates are only valid with TDLS */
992 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
993 params->supported_rates &&
994 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
995 mutex_unlock(&local->sta_mtx);
996 return -EINVAL;
997 }
998
999 if (params->vlan && params->vlan != sta->sdata->dev) {
1000 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1001
1002 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1003 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1004 mutex_unlock(&local->sta_mtx);
1005 return -EINVAL;
1006 }
1007
1008 if (params->vlan->ieee80211_ptr->use_4addr) {
1009 if (vlansdata->u.vlan.sta) {
1010 mutex_unlock(&local->sta_mtx);
1011 return -EBUSY;
1012 }
1013
1014 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1015 }
1016
1017 sta->sdata = vlansdata;
1018 ieee80211_send_layer2_update(sta);
1019 }
1020
1021 err = sta_apply_parameters(local, sta, params);
1022 if (err) {
1023 mutex_unlock(&local->sta_mtx);
1024 return err;
1025 }
1026
1027 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1028 rate_control_rate_init(sta);
1029
1030 mutex_unlock(&local->sta_mtx);
1031
1032 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1033 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1034 ieee80211_recalc_ps(local, -1);
1035
1036 return 0;
1037 }
1038
1039 #ifdef CONFIG_MAC80211_MESH
1040 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1041 u8 *dst, u8 *next_hop)
1042 {
1043 struct ieee80211_sub_if_data *sdata;
1044 struct mesh_path *mpath;
1045 struct sta_info *sta;
1046 int err;
1047
1048 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049
1050 rcu_read_lock();
1051 sta = sta_info_get(sdata, next_hop);
1052 if (!sta) {
1053 rcu_read_unlock();
1054 return -ENOENT;
1055 }
1056
1057 err = mesh_path_add(dst, sdata);
1058 if (err) {
1059 rcu_read_unlock();
1060 return err;
1061 }
1062
1063 mpath = mesh_path_lookup(dst, sdata);
1064 if (!mpath) {
1065 rcu_read_unlock();
1066 return -ENXIO;
1067 }
1068 mesh_path_fix_nexthop(mpath, sta);
1069
1070 rcu_read_unlock();
1071 return 0;
1072 }
1073
1074 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1075 u8 *dst)
1076 {
1077 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1078
1079 if (dst)
1080 return mesh_path_del(dst, sdata);
1081
1082 mesh_path_flush_by_iface(sdata);
1083 return 0;
1084 }
1085
1086 static int ieee80211_change_mpath(struct wiphy *wiphy,
1087 struct net_device *dev,
1088 u8 *dst, u8 *next_hop)
1089 {
1090 struct ieee80211_sub_if_data *sdata;
1091 struct mesh_path *mpath;
1092 struct sta_info *sta;
1093
1094 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1095
1096 rcu_read_lock();
1097
1098 sta = sta_info_get(sdata, next_hop);
1099 if (!sta) {
1100 rcu_read_unlock();
1101 return -ENOENT;
1102 }
1103
1104 mpath = mesh_path_lookup(dst, sdata);
1105 if (!mpath) {
1106 rcu_read_unlock();
1107 return -ENOENT;
1108 }
1109
1110 mesh_path_fix_nexthop(mpath, sta);
1111
1112 rcu_read_unlock();
1113 return 0;
1114 }
1115
1116 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1117 struct mpath_info *pinfo)
1118 {
1119 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1120
1121 if (next_hop_sta)
1122 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1123 else
1124 memset(next_hop, 0, ETH_ALEN);
1125
1126 pinfo->generation = mesh_paths_generation;
1127
1128 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1129 MPATH_INFO_SN |
1130 MPATH_INFO_METRIC |
1131 MPATH_INFO_EXPTIME |
1132 MPATH_INFO_DISCOVERY_TIMEOUT |
1133 MPATH_INFO_DISCOVERY_RETRIES |
1134 MPATH_INFO_FLAGS;
1135
1136 pinfo->frame_qlen = mpath->frame_queue.qlen;
1137 pinfo->sn = mpath->sn;
1138 pinfo->metric = mpath->metric;
1139 if (time_before(jiffies, mpath->exp_time))
1140 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1141 pinfo->discovery_timeout =
1142 jiffies_to_msecs(mpath->discovery_timeout);
1143 pinfo->discovery_retries = mpath->discovery_retries;
1144 pinfo->flags = 0;
1145 if (mpath->flags & MESH_PATH_ACTIVE)
1146 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1147 if (mpath->flags & MESH_PATH_RESOLVING)
1148 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1149 if (mpath->flags & MESH_PATH_SN_VALID)
1150 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1151 if (mpath->flags & MESH_PATH_FIXED)
1152 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1153 if (mpath->flags & MESH_PATH_RESOLVING)
1154 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1155
1156 pinfo->flags = mpath->flags;
1157 }
1158
1159 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1160 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1161
1162 {
1163 struct ieee80211_sub_if_data *sdata;
1164 struct mesh_path *mpath;
1165
1166 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1167
1168 rcu_read_lock();
1169 mpath = mesh_path_lookup(dst, sdata);
1170 if (!mpath) {
1171 rcu_read_unlock();
1172 return -ENOENT;
1173 }
1174 memcpy(dst, mpath->dst, ETH_ALEN);
1175 mpath_set_pinfo(mpath, next_hop, pinfo);
1176 rcu_read_unlock();
1177 return 0;
1178 }
1179
1180 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1181 int idx, u8 *dst, u8 *next_hop,
1182 struct mpath_info *pinfo)
1183 {
1184 struct ieee80211_sub_if_data *sdata;
1185 struct mesh_path *mpath;
1186
1187 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1188
1189 rcu_read_lock();
1190 mpath = mesh_path_lookup_by_idx(idx, sdata);
1191 if (!mpath) {
1192 rcu_read_unlock();
1193 return -ENOENT;
1194 }
1195 memcpy(dst, mpath->dst, ETH_ALEN);
1196 mpath_set_pinfo(mpath, next_hop, pinfo);
1197 rcu_read_unlock();
1198 return 0;
1199 }
1200
1201 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1202 struct net_device *dev,
1203 struct mesh_config *conf)
1204 {
1205 struct ieee80211_sub_if_data *sdata;
1206 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207
1208 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1209 return 0;
1210 }
1211
1212 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1213 {
1214 return (mask >> (parm-1)) & 0x1;
1215 }
1216
1217 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1218 const struct mesh_setup *setup)
1219 {
1220 u8 *new_ie;
1221 const u8 *old_ie;
1222 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1223 struct ieee80211_sub_if_data, u.mesh);
1224
1225 /* allocate information elements */
1226 new_ie = NULL;
1227 old_ie = ifmsh->ie;
1228
1229 if (setup->ie_len) {
1230 new_ie = kmemdup(setup->ie, setup->ie_len,
1231 GFP_KERNEL);
1232 if (!new_ie)
1233 return -ENOMEM;
1234 }
1235 ifmsh->ie_len = setup->ie_len;
1236 ifmsh->ie = new_ie;
1237 kfree(old_ie);
1238
1239 /* now copy the rest of the setup parameters */
1240 ifmsh->mesh_id_len = setup->mesh_id_len;
1241 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1242 ifmsh->mesh_sp_id = setup->sync_method;
1243 ifmsh->mesh_pp_id = setup->path_sel_proto;
1244 ifmsh->mesh_pm_id = setup->path_metric;
1245 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1246 if (setup->is_authenticated)
1247 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1248 if (setup->is_secure)
1249 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1250
1251 /* mcast rate setting in Mesh Node */
1252 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1253 sizeof(setup->mcast_rate));
1254
1255 return 0;
1256 }
1257
1258 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1259 struct net_device *dev, u32 mask,
1260 const struct mesh_config *nconf)
1261 {
1262 struct mesh_config *conf;
1263 struct ieee80211_sub_if_data *sdata;
1264 struct ieee80211_if_mesh *ifmsh;
1265
1266 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1267 ifmsh = &sdata->u.mesh;
1268
1269 /* Set the config options which we are interested in setting */
1270 conf = &(sdata->u.mesh.mshcfg);
1271 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1272 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1273 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1274 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1275 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1276 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1277 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1278 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1279 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1280 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1281 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1282 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1283 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1284 conf->dot11MeshTTL = nconf->element_ttl;
1285 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1286 conf->auto_open_plinks = nconf->auto_open_plinks;
1287 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1288 conf->dot11MeshNbrOffsetMaxNeighbor =
1289 nconf->dot11MeshNbrOffsetMaxNeighbor;
1290 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1291 conf->dot11MeshHWMPmaxPREQretries =
1292 nconf->dot11MeshHWMPmaxPREQretries;
1293 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1294 conf->path_refresh_time = nconf->path_refresh_time;
1295 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1296 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1297 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1298 conf->dot11MeshHWMPactivePathTimeout =
1299 nconf->dot11MeshHWMPactivePathTimeout;
1300 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1301 conf->dot11MeshHWMPpreqMinInterval =
1302 nconf->dot11MeshHWMPpreqMinInterval;
1303 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1304 conf->dot11MeshHWMPperrMinInterval =
1305 nconf->dot11MeshHWMPperrMinInterval;
1306 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1307 mask))
1308 conf->dot11MeshHWMPnetDiameterTraversalTime =
1309 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1310 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1311 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1312 ieee80211_mesh_root_setup(ifmsh);
1313 }
1314 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1315 /* our current gate announcement implementation rides on root
1316 * announcements, so require this ifmsh to also be a root node
1317 * */
1318 if (nconf->dot11MeshGateAnnouncementProtocol &&
1319 !conf->dot11MeshHWMPRootMode) {
1320 conf->dot11MeshHWMPRootMode = 1;
1321 ieee80211_mesh_root_setup(ifmsh);
1322 }
1323 conf->dot11MeshGateAnnouncementProtocol =
1324 nconf->dot11MeshGateAnnouncementProtocol;
1325 }
1326 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1327 conf->dot11MeshHWMPRannInterval =
1328 nconf->dot11MeshHWMPRannInterval;
1329 }
1330 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1331 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1332 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1333 /* our RSSI threshold implementation is supported only for
1334 * devices that report signal in dBm.
1335 */
1336 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1337 return -ENOTSUPP;
1338 conf->rssi_threshold = nconf->rssi_threshold;
1339 }
1340 return 0;
1341 }
1342
1343 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1344 const struct mesh_config *conf,
1345 const struct mesh_setup *setup)
1346 {
1347 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1348 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1349 int err;
1350
1351 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1352 err = copy_mesh_setup(ifmsh, setup);
1353 if (err)
1354 return err;
1355 ieee80211_start_mesh(sdata);
1356
1357 return 0;
1358 }
1359
1360 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1361 {
1362 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1363
1364 ieee80211_stop_mesh(sdata);
1365
1366 return 0;
1367 }
1368 #endif
1369
1370 static int ieee80211_change_bss(struct wiphy *wiphy,
1371 struct net_device *dev,
1372 struct bss_parameters *params)
1373 {
1374 struct ieee80211_sub_if_data *sdata;
1375 u32 changed = 0;
1376
1377 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1378
1379 if (params->use_cts_prot >= 0) {
1380 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1381 changed |= BSS_CHANGED_ERP_CTS_PROT;
1382 }
1383 if (params->use_short_preamble >= 0) {
1384 sdata->vif.bss_conf.use_short_preamble =
1385 params->use_short_preamble;
1386 changed |= BSS_CHANGED_ERP_PREAMBLE;
1387 }
1388
1389 if (!sdata->vif.bss_conf.use_short_slot &&
1390 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1391 sdata->vif.bss_conf.use_short_slot = true;
1392 changed |= BSS_CHANGED_ERP_SLOT;
1393 }
1394
1395 if (params->use_short_slot_time >= 0) {
1396 sdata->vif.bss_conf.use_short_slot =
1397 params->use_short_slot_time;
1398 changed |= BSS_CHANGED_ERP_SLOT;
1399 }
1400
1401 if (params->basic_rates) {
1402 int i, j;
1403 u32 rates = 0;
1404 struct ieee80211_local *local = wiphy_priv(wiphy);
1405 struct ieee80211_supported_band *sband =
1406 wiphy->bands[local->oper_channel->band];
1407
1408 for (i = 0; i < params->basic_rates_len; i++) {
1409 int rate = (params->basic_rates[i] & 0x7f) * 5;
1410 for (j = 0; j < sband->n_bitrates; j++) {
1411 if (sband->bitrates[j].bitrate == rate)
1412 rates |= BIT(j);
1413 }
1414 }
1415 sdata->vif.bss_conf.basic_rates = rates;
1416 changed |= BSS_CHANGED_BASIC_RATES;
1417 }
1418
1419 if (params->ap_isolate >= 0) {
1420 if (params->ap_isolate)
1421 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1422 else
1423 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1424 }
1425
1426 if (params->ht_opmode >= 0) {
1427 sdata->vif.bss_conf.ht_operation_mode =
1428 (u16) params->ht_opmode;
1429 changed |= BSS_CHANGED_HT;
1430 }
1431
1432 ieee80211_bss_info_change_notify(sdata, changed);
1433
1434 return 0;
1435 }
1436
1437 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1438 struct net_device *dev,
1439 struct ieee80211_txq_params *params)
1440 {
1441 struct ieee80211_local *local = wiphy_priv(wiphy);
1442 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1443 struct ieee80211_tx_queue_params p;
1444
1445 if (!local->ops->conf_tx)
1446 return -EOPNOTSUPP;
1447
1448 if (local->hw.queues < IEEE80211_NUM_ACS)
1449 return -EOPNOTSUPP;
1450
1451 memset(&p, 0, sizeof(p));
1452 p.aifs = params->aifs;
1453 p.cw_max = params->cwmax;
1454 p.cw_min = params->cwmin;
1455 p.txop = params->txop;
1456
1457 /*
1458 * Setting tx queue params disables u-apsd because it's only
1459 * called in master mode.
1460 */
1461 p.uapsd = false;
1462
1463 sdata->tx_conf[params->ac] = p;
1464 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1465 wiphy_debug(local->hw.wiphy,
1466 "failed to set TX queue parameters for AC %d\n",
1467 params->ac);
1468 return -EINVAL;
1469 }
1470
1471 return 0;
1472 }
1473
1474 static int ieee80211_set_channel(struct wiphy *wiphy,
1475 struct net_device *netdev,
1476 struct ieee80211_channel *chan,
1477 enum nl80211_channel_type channel_type)
1478 {
1479 struct ieee80211_local *local = wiphy_priv(wiphy);
1480 struct ieee80211_sub_if_data *sdata = NULL;
1481 struct ieee80211_channel *old_oper;
1482 enum nl80211_channel_type old_oper_type;
1483 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1484
1485 if (netdev)
1486 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1487
1488 switch (ieee80211_get_channel_mode(local, NULL)) {
1489 case CHAN_MODE_HOPPING:
1490 return -EBUSY;
1491 case CHAN_MODE_FIXED:
1492 if (local->oper_channel != chan)
1493 return -EBUSY;
1494 if (!sdata && local->_oper_channel_type == channel_type)
1495 return 0;
1496 break;
1497 case CHAN_MODE_UNDEFINED:
1498 break;
1499 }
1500
1501 if (sdata)
1502 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1503 old_oper_type = local->_oper_channel_type;
1504
1505 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1506 return -EBUSY;
1507
1508 old_oper = local->oper_channel;
1509 local->oper_channel = chan;
1510
1511 /* Update driver if changes were actually made. */
1512 if ((old_oper != local->oper_channel) ||
1513 (old_oper_type != local->_oper_channel_type))
1514 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1515
1516 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1517 old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1518 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1519
1520 return 0;
1521 }
1522
1523 #ifdef CONFIG_PM
1524 static int ieee80211_suspend(struct wiphy *wiphy,
1525 struct cfg80211_wowlan *wowlan)
1526 {
1527 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1528 }
1529
1530 static int ieee80211_resume(struct wiphy *wiphy)
1531 {
1532 return __ieee80211_resume(wiphy_priv(wiphy));
1533 }
1534 #else
1535 #define ieee80211_suspend NULL
1536 #define ieee80211_resume NULL
1537 #endif
1538
1539 static int ieee80211_scan(struct wiphy *wiphy,
1540 struct net_device *dev,
1541 struct cfg80211_scan_request *req)
1542 {
1543 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544
1545 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1546 case NL80211_IFTYPE_STATION:
1547 case NL80211_IFTYPE_ADHOC:
1548 case NL80211_IFTYPE_MESH_POINT:
1549 case NL80211_IFTYPE_P2P_CLIENT:
1550 break;
1551 case NL80211_IFTYPE_P2P_GO:
1552 if (sdata->local->ops->hw_scan)
1553 break;
1554 /*
1555 * FIXME: implement NoA while scanning in software,
1556 * for now fall through to allow scanning only when
1557 * beaconing hasn't been configured yet
1558 */
1559 case NL80211_IFTYPE_AP:
1560 if (sdata->u.ap.beacon)
1561 return -EOPNOTSUPP;
1562 break;
1563 default:
1564 return -EOPNOTSUPP;
1565 }
1566
1567 return ieee80211_request_scan(sdata, req);
1568 }
1569
1570 static int
1571 ieee80211_sched_scan_start(struct wiphy *wiphy,
1572 struct net_device *dev,
1573 struct cfg80211_sched_scan_request *req)
1574 {
1575 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1576
1577 if (!sdata->local->ops->sched_scan_start)
1578 return -EOPNOTSUPP;
1579
1580 return ieee80211_request_sched_scan_start(sdata, req);
1581 }
1582
1583 static int
1584 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1585 {
1586 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1587
1588 if (!sdata->local->ops->sched_scan_stop)
1589 return -EOPNOTSUPP;
1590
1591 return ieee80211_request_sched_scan_stop(sdata);
1592 }
1593
1594 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1595 struct cfg80211_auth_request *req)
1596 {
1597 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1598 }
1599
1600 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1601 struct cfg80211_assoc_request *req)
1602 {
1603 struct ieee80211_local *local = wiphy_priv(wiphy);
1604 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1605
1606 switch (ieee80211_get_channel_mode(local, sdata)) {
1607 case CHAN_MODE_HOPPING:
1608 return -EBUSY;
1609 case CHAN_MODE_FIXED:
1610 if (local->oper_channel == req->bss->channel)
1611 break;
1612 return -EBUSY;
1613 case CHAN_MODE_UNDEFINED:
1614 break;
1615 }
1616
1617 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1618 }
1619
1620 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1621 struct cfg80211_deauth_request *req)
1622 {
1623 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1624 }
1625
1626 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1627 struct cfg80211_disassoc_request *req)
1628 {
1629 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1630 }
1631
1632 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1633 struct cfg80211_ibss_params *params)
1634 {
1635 struct ieee80211_local *local = wiphy_priv(wiphy);
1636 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1637
1638 switch (ieee80211_get_channel_mode(local, sdata)) {
1639 case CHAN_MODE_HOPPING:
1640 return -EBUSY;
1641 case CHAN_MODE_FIXED:
1642 if (!params->channel_fixed)
1643 return -EBUSY;
1644 if (local->oper_channel == params->channel)
1645 break;
1646 return -EBUSY;
1647 case CHAN_MODE_UNDEFINED:
1648 break;
1649 }
1650
1651 return ieee80211_ibss_join(sdata, params);
1652 }
1653
1654 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1655 {
1656 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1657
1658 return ieee80211_ibss_leave(sdata);
1659 }
1660
1661 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1662 {
1663 struct ieee80211_local *local = wiphy_priv(wiphy);
1664 int err;
1665
1666 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1667 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1668
1669 if (err)
1670 return err;
1671 }
1672
1673 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1674 err = drv_set_coverage_class(local, wiphy->coverage_class);
1675
1676 if (err)
1677 return err;
1678 }
1679
1680 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1681 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1682
1683 if (err)
1684 return err;
1685 }
1686
1687 if (changed & WIPHY_PARAM_RETRY_SHORT)
1688 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1689 if (changed & WIPHY_PARAM_RETRY_LONG)
1690 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1691 if (changed &
1692 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1693 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1694
1695 return 0;
1696 }
1697
1698 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1699 enum nl80211_tx_power_setting type, int mbm)
1700 {
1701 struct ieee80211_local *local = wiphy_priv(wiphy);
1702 struct ieee80211_channel *chan = local->hw.conf.channel;
1703 u32 changes = 0;
1704
1705 switch (type) {
1706 case NL80211_TX_POWER_AUTOMATIC:
1707 local->user_power_level = -1;
1708 break;
1709 case NL80211_TX_POWER_LIMITED:
1710 if (mbm < 0 || (mbm % 100))
1711 return -EOPNOTSUPP;
1712 local->user_power_level = MBM_TO_DBM(mbm);
1713 break;
1714 case NL80211_TX_POWER_FIXED:
1715 if (mbm < 0 || (mbm % 100))
1716 return -EOPNOTSUPP;
1717 /* TODO: move to cfg80211 when it knows the channel */
1718 if (MBM_TO_DBM(mbm) > chan->max_power)
1719 return -EINVAL;
1720 local->user_power_level = MBM_TO_DBM(mbm);
1721 break;
1722 }
1723
1724 ieee80211_hw_config(local, changes);
1725
1726 return 0;
1727 }
1728
1729 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1730 {
1731 struct ieee80211_local *local = wiphy_priv(wiphy);
1732
1733 *dbm = local->hw.conf.power_level;
1734
1735 return 0;
1736 }
1737
1738 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1739 const u8 *addr)
1740 {
1741 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1742
1743 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1744
1745 return 0;
1746 }
1747
1748 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1749 {
1750 struct ieee80211_local *local = wiphy_priv(wiphy);
1751
1752 drv_rfkill_poll(local);
1753 }
1754
1755 #ifdef CONFIG_NL80211_TESTMODE
1756 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1757 {
1758 struct ieee80211_local *local = wiphy_priv(wiphy);
1759
1760 if (!local->ops->testmode_cmd)
1761 return -EOPNOTSUPP;
1762
1763 return local->ops->testmode_cmd(&local->hw, data, len);
1764 }
1765
1766 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1767 struct sk_buff *skb,
1768 struct netlink_callback *cb,
1769 void *data, int len)
1770 {
1771 struct ieee80211_local *local = wiphy_priv(wiphy);
1772
1773 if (!local->ops->testmode_dump)
1774 return -EOPNOTSUPP;
1775
1776 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1777 }
1778 #endif
1779
1780 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1781 enum ieee80211_smps_mode smps_mode)
1782 {
1783 const u8 *ap;
1784 enum ieee80211_smps_mode old_req;
1785 int err;
1786
1787 lockdep_assert_held(&sdata->u.mgd.mtx);
1788
1789 old_req = sdata->u.mgd.req_smps;
1790 sdata->u.mgd.req_smps = smps_mode;
1791
1792 if (old_req == smps_mode &&
1793 smps_mode != IEEE80211_SMPS_AUTOMATIC)
1794 return 0;
1795
1796 /*
1797 * If not associated, or current association is not an HT
1798 * association, there's no need to send an action frame.
1799 */
1800 if (!sdata->u.mgd.associated ||
1801 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1802 mutex_lock(&sdata->local->iflist_mtx);
1803 ieee80211_recalc_smps(sdata->local);
1804 mutex_unlock(&sdata->local->iflist_mtx);
1805 return 0;
1806 }
1807
1808 ap = sdata->u.mgd.associated->bssid;
1809
1810 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1811 if (sdata->u.mgd.powersave)
1812 smps_mode = IEEE80211_SMPS_DYNAMIC;
1813 else
1814 smps_mode = IEEE80211_SMPS_OFF;
1815 }
1816
1817 /* send SM PS frame to AP */
1818 err = ieee80211_send_smps_action(sdata, smps_mode,
1819 ap, ap);
1820 if (err)
1821 sdata->u.mgd.req_smps = old_req;
1822
1823 return err;
1824 }
1825
1826 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1827 bool enabled, int timeout)
1828 {
1829 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1830 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1831
1832 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1833 return -EOPNOTSUPP;
1834
1835 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1836 return -EOPNOTSUPP;
1837
1838 if (enabled == sdata->u.mgd.powersave &&
1839 timeout == local->dynamic_ps_forced_timeout)
1840 return 0;
1841
1842 sdata->u.mgd.powersave = enabled;
1843 local->dynamic_ps_forced_timeout = timeout;
1844
1845 /* no change, but if automatic follow powersave */
1846 mutex_lock(&sdata->u.mgd.mtx);
1847 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1848 mutex_unlock(&sdata->u.mgd.mtx);
1849
1850 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1851 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1852
1853 ieee80211_recalc_ps(local, -1);
1854
1855 return 0;
1856 }
1857
1858 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1859 struct net_device *dev,
1860 s32 rssi_thold, u32 rssi_hyst)
1861 {
1862 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1863 struct ieee80211_vif *vif = &sdata->vif;
1864 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1865
1866 if (rssi_thold == bss_conf->cqm_rssi_thold &&
1867 rssi_hyst == bss_conf->cqm_rssi_hyst)
1868 return 0;
1869
1870 bss_conf->cqm_rssi_thold = rssi_thold;
1871 bss_conf->cqm_rssi_hyst = rssi_hyst;
1872
1873 /* tell the driver upon association, unless already associated */
1874 if (sdata->u.mgd.associated &&
1875 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1876 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1877
1878 return 0;
1879 }
1880
1881 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1882 struct net_device *dev,
1883 const u8 *addr,
1884 const struct cfg80211_bitrate_mask *mask)
1885 {
1886 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1887 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1888 int i, ret;
1889
1890 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1891 ret = drv_set_bitrate_mask(local, sdata, mask);
1892 if (ret)
1893 return ret;
1894 }
1895
1896 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1897 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1898 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1899 sizeof(mask->control[i].mcs));
1900 }
1901
1902 return 0;
1903 }
1904
1905 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1906 struct net_device *dev,
1907 struct ieee80211_channel *chan,
1908 enum nl80211_channel_type chantype,
1909 unsigned int duration, u64 *cookie)
1910 {
1911 int ret;
1912 u32 random_cookie;
1913
1914 lockdep_assert_held(&local->mtx);
1915
1916 if (local->hw_roc_cookie)
1917 return -EBUSY;
1918 /* must be nonzero */
1919 random_cookie = random32() | 1;
1920
1921 *cookie = random_cookie;
1922 local->hw_roc_dev = dev;
1923 local->hw_roc_cookie = random_cookie;
1924 local->hw_roc_channel = chan;
1925 local->hw_roc_channel_type = chantype;
1926 local->hw_roc_duration = duration;
1927 ret = drv_remain_on_channel(local, chan, chantype, duration);
1928 if (ret) {
1929 local->hw_roc_channel = NULL;
1930 local->hw_roc_cookie = 0;
1931 }
1932
1933 return ret;
1934 }
1935
1936 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1937 struct net_device *dev,
1938 struct ieee80211_channel *chan,
1939 enum nl80211_channel_type channel_type,
1940 unsigned int duration,
1941 u64 *cookie)
1942 {
1943 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1944 struct ieee80211_local *local = sdata->local;
1945
1946 if (local->ops->remain_on_channel) {
1947 int ret;
1948
1949 mutex_lock(&local->mtx);
1950 ret = ieee80211_remain_on_channel_hw(local, dev,
1951 chan, channel_type,
1952 duration, cookie);
1953 local->hw_roc_for_tx = false;
1954 mutex_unlock(&local->mtx);
1955
1956 return ret;
1957 }
1958
1959 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1960 duration, cookie);
1961 }
1962
1963 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1964 u64 cookie)
1965 {
1966 int ret;
1967
1968 lockdep_assert_held(&local->mtx);
1969
1970 if (local->hw_roc_cookie != cookie)
1971 return -ENOENT;
1972
1973 ret = drv_cancel_remain_on_channel(local);
1974 if (ret)
1975 return ret;
1976
1977 local->hw_roc_cookie = 0;
1978 local->hw_roc_channel = NULL;
1979
1980 ieee80211_recalc_idle(local);
1981
1982 return 0;
1983 }
1984
1985 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1986 struct net_device *dev,
1987 u64 cookie)
1988 {
1989 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1990 struct ieee80211_local *local = sdata->local;
1991
1992 if (local->ops->cancel_remain_on_channel) {
1993 int ret;
1994
1995 mutex_lock(&local->mtx);
1996 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1997 mutex_unlock(&local->mtx);
1998
1999 return ret;
2000 }
2001
2002 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2003 }
2004
2005 static enum work_done_result
2006 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2007 {
2008 /*
2009 * Use the data embedded in the work struct for reporting
2010 * here so if the driver mangled the SKB before dropping
2011 * it (which is the only way we really should get here)
2012 * then we don't report mangled data.
2013 *
2014 * If there was no wait time, then by the time we get here
2015 * the driver will likely not have reported the status yet,
2016 * so in that case userspace will have to deal with it.
2017 */
2018
2019 if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2020 cfg80211_mgmt_tx_status(wk->sdata->dev,
2021 (unsigned long) wk->offchan_tx.frame,
2022 wk->data, wk->data_len, false, GFP_KERNEL);
2023
2024 return WORK_DONE_DESTROY;
2025 }
2026
2027 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2028 struct ieee80211_channel *chan, bool offchan,
2029 enum nl80211_channel_type channel_type,
2030 bool channel_type_valid, unsigned int wait,
2031 const u8 *buf, size_t len, bool no_cck,
2032 bool dont_wait_for_ack, u64 *cookie)
2033 {
2034 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2035 struct ieee80211_local *local = sdata->local;
2036 struct sk_buff *skb;
2037 struct sta_info *sta;
2038 struct ieee80211_work *wk;
2039 const struct ieee80211_mgmt *mgmt = (void *)buf;
2040 u32 flags;
2041 bool is_offchan = false;
2042
2043 if (dont_wait_for_ack)
2044 flags = IEEE80211_TX_CTL_NO_ACK;
2045 else
2046 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2047 IEEE80211_TX_CTL_REQ_TX_STATUS;
2048
2049 /* Check that we are on the requested channel for transmission */
2050 if (chan != local->tmp_channel &&
2051 chan != local->oper_channel)
2052 is_offchan = true;
2053 if (channel_type_valid &&
2054 (channel_type != local->tmp_channel_type &&
2055 channel_type != local->_oper_channel_type))
2056 is_offchan = true;
2057
2058 if (chan == local->hw_roc_channel) {
2059 /* TODO: check channel type? */
2060 is_offchan = false;
2061 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2062 }
2063
2064 if (no_cck)
2065 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2066
2067 if (is_offchan && !offchan)
2068 return -EBUSY;
2069
2070 switch (sdata->vif.type) {
2071 case NL80211_IFTYPE_ADHOC:
2072 case NL80211_IFTYPE_AP:
2073 case NL80211_IFTYPE_AP_VLAN:
2074 case NL80211_IFTYPE_P2P_GO:
2075 case NL80211_IFTYPE_MESH_POINT:
2076 if (!ieee80211_is_action(mgmt->frame_control) ||
2077 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2078 break;
2079 rcu_read_lock();
2080 sta = sta_info_get(sdata, mgmt->da);
2081 rcu_read_unlock();
2082 if (!sta)
2083 return -ENOLINK;
2084 break;
2085 case NL80211_IFTYPE_STATION:
2086 case NL80211_IFTYPE_P2P_CLIENT:
2087 break;
2088 default:
2089 return -EOPNOTSUPP;
2090 }
2091
2092 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2093 if (!skb)
2094 return -ENOMEM;
2095 skb_reserve(skb, local->hw.extra_tx_headroom);
2096
2097 memcpy(skb_put(skb, len), buf, len);
2098
2099 IEEE80211_SKB_CB(skb)->flags = flags;
2100
2101 skb->dev = sdata->dev;
2102
2103 *cookie = (unsigned long) skb;
2104
2105 if (is_offchan && local->ops->remain_on_channel) {
2106 unsigned int duration;
2107 int ret;
2108
2109 mutex_lock(&local->mtx);
2110 /*
2111 * If the duration is zero, then the driver
2112 * wouldn't actually do anything. Set it to
2113 * 100 for now.
2114 *
2115 * TODO: cancel the off-channel operation
2116 * when we get the SKB's TX status and
2117 * the wait time was zero before.
2118 */
2119 duration = 100;
2120 if (wait)
2121 duration = wait;
2122 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2123 channel_type,
2124 duration, cookie);
2125 if (ret) {
2126 kfree_skb(skb);
2127 mutex_unlock(&local->mtx);
2128 return ret;
2129 }
2130
2131 local->hw_roc_for_tx = true;
2132 local->hw_roc_duration = wait;
2133
2134 /*
2135 * queue up frame for transmission after
2136 * ieee80211_ready_on_channel call
2137 */
2138
2139 /* modify cookie to prevent API mismatches */
2140 *cookie ^= 2;
2141 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2142 local->hw_roc_skb = skb;
2143 local->hw_roc_skb_for_status = skb;
2144 mutex_unlock(&local->mtx);
2145
2146 return 0;
2147 }
2148
2149 /*
2150 * Can transmit right away if the channel was the
2151 * right one and there's no wait involved... If a
2152 * wait is involved, we might otherwise not be on
2153 * the right channel for long enough!
2154 */
2155 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2156 ieee80211_tx_skb(sdata, skb);
2157 return 0;
2158 }
2159
2160 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2161 if (!wk) {
2162 kfree_skb(skb);
2163 return -ENOMEM;
2164 }
2165
2166 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2167 wk->chan = chan;
2168 wk->chan_type = channel_type;
2169 wk->sdata = sdata;
2170 wk->done = ieee80211_offchan_tx_done;
2171 wk->offchan_tx.frame = skb;
2172 wk->offchan_tx.wait = wait;
2173 wk->data_len = len;
2174 memcpy(wk->data, buf, len);
2175
2176 ieee80211_add_work(wk);
2177 return 0;
2178 }
2179
2180 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2181 struct net_device *dev,
2182 u64 cookie)
2183 {
2184 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2185 struct ieee80211_local *local = sdata->local;
2186 struct ieee80211_work *wk;
2187 int ret = -ENOENT;
2188
2189 mutex_lock(&local->mtx);
2190
2191 if (local->ops->cancel_remain_on_channel) {
2192 cookie ^= 2;
2193 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2194
2195 if (ret == 0) {
2196 kfree_skb(local->hw_roc_skb);
2197 local->hw_roc_skb = NULL;
2198 local->hw_roc_skb_for_status = NULL;
2199 }
2200
2201 mutex_unlock(&local->mtx);
2202
2203 return ret;
2204 }
2205
2206 list_for_each_entry(wk, &local->work_list, list) {
2207 if (wk->sdata != sdata)
2208 continue;
2209
2210 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2211 continue;
2212
2213 if (cookie != (unsigned long) wk->offchan_tx.frame)
2214 continue;
2215
2216 wk->timeout = jiffies;
2217
2218 ieee80211_queue_work(&local->hw, &local->work_work);
2219 ret = 0;
2220 break;
2221 }
2222 mutex_unlock(&local->mtx);
2223
2224 return ret;
2225 }
2226
2227 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2228 struct net_device *dev,
2229 u16 frame_type, bool reg)
2230 {
2231 struct ieee80211_local *local = wiphy_priv(wiphy);
2232
2233 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2234 return;
2235
2236 if (reg)
2237 local->probe_req_reg++;
2238 else
2239 local->probe_req_reg--;
2240
2241 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2242 }
2243
2244 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2245 {
2246 struct ieee80211_local *local = wiphy_priv(wiphy);
2247
2248 if (local->started)
2249 return -EOPNOTSUPP;
2250
2251 return drv_set_antenna(local, tx_ant, rx_ant);
2252 }
2253
2254 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2255 {
2256 struct ieee80211_local *local = wiphy_priv(wiphy);
2257
2258 return drv_get_antenna(local, tx_ant, rx_ant);
2259 }
2260
2261 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2262 {
2263 struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265 return drv_set_ringparam(local, tx, rx);
2266 }
2267
2268 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2269 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2270 {
2271 struct ieee80211_local *local = wiphy_priv(wiphy);
2272
2273 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2274 }
2275
2276 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2277 struct net_device *dev,
2278 struct cfg80211_gtk_rekey_data *data)
2279 {
2280 struct ieee80211_local *local = wiphy_priv(wiphy);
2281 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2282
2283 if (!local->ops->set_rekey_data)
2284 return -EOPNOTSUPP;
2285
2286 drv_set_rekey_data(local, sdata, data);
2287
2288 return 0;
2289 }
2290
2291 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2292 {
2293 u8 *pos = (void *)skb_put(skb, 7);
2294
2295 *pos++ = WLAN_EID_EXT_CAPABILITY;
2296 *pos++ = 5; /* len */
2297 *pos++ = 0x0;
2298 *pos++ = 0x0;
2299 *pos++ = 0x0;
2300 *pos++ = 0x0;
2301 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2302 }
2303
2304 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2305 {
2306 struct ieee80211_local *local = sdata->local;
2307 u16 capab;
2308
2309 capab = 0;
2310 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2311 return capab;
2312
2313 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2314 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2315 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2316 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2317
2318 return capab;
2319 }
2320
2321 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2322 u8 *peer, u8 *bssid)
2323 {
2324 struct ieee80211_tdls_lnkie *lnkid;
2325
2326 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2327
2328 lnkid->ie_type = WLAN_EID_LINK_ID;
2329 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2330
2331 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2332 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2333 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2334 }
2335
2336 static int
2337 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2338 u8 *peer, u8 action_code, u8 dialog_token,
2339 u16 status_code, struct sk_buff *skb)
2340 {
2341 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2342 struct ieee80211_tdls_data *tf;
2343
2344 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2345
2346 memcpy(tf->da, peer, ETH_ALEN);
2347 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2348 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2349 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2350
2351 switch (action_code) {
2352 case WLAN_TDLS_SETUP_REQUEST:
2353 tf->category = WLAN_CATEGORY_TDLS;
2354 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2355
2356 skb_put(skb, sizeof(tf->u.setup_req));
2357 tf->u.setup_req.dialog_token = dialog_token;
2358 tf->u.setup_req.capability =
2359 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2360
2361 ieee80211_add_srates_ie(&sdata->vif, skb);
2362 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2363 ieee80211_tdls_add_ext_capab(skb);
2364 break;
2365 case WLAN_TDLS_SETUP_RESPONSE:
2366 tf->category = WLAN_CATEGORY_TDLS;
2367 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2368
2369 skb_put(skb, sizeof(tf->u.setup_resp));
2370 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2371 tf->u.setup_resp.dialog_token = dialog_token;
2372 tf->u.setup_resp.capability =
2373 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2374
2375 ieee80211_add_srates_ie(&sdata->vif, skb);
2376 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2377 ieee80211_tdls_add_ext_capab(skb);
2378 break;
2379 case WLAN_TDLS_SETUP_CONFIRM:
2380 tf->category = WLAN_CATEGORY_TDLS;
2381 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2382
2383 skb_put(skb, sizeof(tf->u.setup_cfm));
2384 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2385 tf->u.setup_cfm.dialog_token = dialog_token;
2386 break;
2387 case WLAN_TDLS_TEARDOWN:
2388 tf->category = WLAN_CATEGORY_TDLS;
2389 tf->action_code = WLAN_TDLS_TEARDOWN;
2390
2391 skb_put(skb, sizeof(tf->u.teardown));
2392 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2393 break;
2394 case WLAN_TDLS_DISCOVERY_REQUEST:
2395 tf->category = WLAN_CATEGORY_TDLS;
2396 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2397
2398 skb_put(skb, sizeof(tf->u.discover_req));
2399 tf->u.discover_req.dialog_token = dialog_token;
2400 break;
2401 default:
2402 return -EINVAL;
2403 }
2404
2405 return 0;
2406 }
2407
2408 static int
2409 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2410 u8 *peer, u8 action_code, u8 dialog_token,
2411 u16 status_code, struct sk_buff *skb)
2412 {
2413 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2414 struct ieee80211_mgmt *mgmt;
2415
2416 mgmt = (void *)skb_put(skb, 24);
2417 memset(mgmt, 0, 24);
2418 memcpy(mgmt->da, peer, ETH_ALEN);
2419 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2420 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2421
2422 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2423 IEEE80211_STYPE_ACTION);
2424
2425 switch (action_code) {
2426 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2427 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2428 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2429 mgmt->u.action.u.tdls_discover_resp.action_code =
2430 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2431 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2432 dialog_token;
2433 mgmt->u.action.u.tdls_discover_resp.capability =
2434 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2435
2436 ieee80211_add_srates_ie(&sdata->vif, skb);
2437 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2438 ieee80211_tdls_add_ext_capab(skb);
2439 break;
2440 default:
2441 return -EINVAL;
2442 }
2443
2444 return 0;
2445 }
2446
2447 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2448 u8 *peer, u8 action_code, u8 dialog_token,
2449 u16 status_code, const u8 *extra_ies,
2450 size_t extra_ies_len)
2451 {
2452 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2453 struct ieee80211_local *local = sdata->local;
2454 struct ieee80211_tx_info *info;
2455 struct sk_buff *skb = NULL;
2456 bool send_direct;
2457 int ret;
2458
2459 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2460 return -ENOTSUPP;
2461
2462 /* make sure we are in managed mode, and associated */
2463 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2464 !sdata->u.mgd.associated)
2465 return -EINVAL;
2466
2467 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2468 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2469 #endif
2470
2471 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2472 max(sizeof(struct ieee80211_mgmt),
2473 sizeof(struct ieee80211_tdls_data)) +
2474 50 + /* supported rates */
2475 7 + /* ext capab */
2476 extra_ies_len +
2477 sizeof(struct ieee80211_tdls_lnkie));
2478 if (!skb)
2479 return -ENOMEM;
2480
2481 info = IEEE80211_SKB_CB(skb);
2482 skb_reserve(skb, local->hw.extra_tx_headroom);
2483
2484 switch (action_code) {
2485 case WLAN_TDLS_SETUP_REQUEST:
2486 case WLAN_TDLS_SETUP_RESPONSE:
2487 case WLAN_TDLS_SETUP_CONFIRM:
2488 case WLAN_TDLS_TEARDOWN:
2489 case WLAN_TDLS_DISCOVERY_REQUEST:
2490 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2491 action_code, dialog_token,
2492 status_code, skb);
2493 send_direct = false;
2494 break;
2495 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2496 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2497 dialog_token, status_code,
2498 skb);
2499 send_direct = true;
2500 break;
2501 default:
2502 ret = -ENOTSUPP;
2503 break;
2504 }
2505
2506 if (ret < 0)
2507 goto fail;
2508
2509 if (extra_ies_len)
2510 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2511
2512 /* the TDLS link IE is always added last */
2513 switch (action_code) {
2514 case WLAN_TDLS_SETUP_REQUEST:
2515 case WLAN_TDLS_SETUP_CONFIRM:
2516 case WLAN_TDLS_TEARDOWN:
2517 case WLAN_TDLS_DISCOVERY_REQUEST:
2518 /* we are the initiator */
2519 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2520 sdata->u.mgd.bssid);
2521 break;
2522 case WLAN_TDLS_SETUP_RESPONSE:
2523 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2524 /* we are the responder */
2525 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2526 sdata->u.mgd.bssid);
2527 break;
2528 default:
2529 ret = -ENOTSUPP;
2530 goto fail;
2531 }
2532
2533 if (send_direct) {
2534 ieee80211_tx_skb(sdata, skb);
2535 return 0;
2536 }
2537
2538 /*
2539 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2540 * we should default to AC_VI.
2541 */
2542 switch (action_code) {
2543 case WLAN_TDLS_SETUP_REQUEST:
2544 case WLAN_TDLS_SETUP_RESPONSE:
2545 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2546 skb->priority = 2;
2547 break;
2548 default:
2549 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2550 skb->priority = 5;
2551 break;
2552 }
2553
2554 /* disable bottom halves when entering the Tx path */
2555 local_bh_disable();
2556 ret = ieee80211_subif_start_xmit(skb, dev);
2557 local_bh_enable();
2558
2559 return ret;
2560
2561 fail:
2562 dev_kfree_skb(skb);
2563 return ret;
2564 }
2565
2566 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2567 u8 *peer, enum nl80211_tdls_operation oper)
2568 {
2569 struct sta_info *sta;
2570 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2571
2572 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2573 return -ENOTSUPP;
2574
2575 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2576 return -EINVAL;
2577
2578 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2579 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2580 #endif
2581
2582 switch (oper) {
2583 case NL80211_TDLS_ENABLE_LINK:
2584 rcu_read_lock();
2585 sta = sta_info_get(sdata, peer);
2586 if (!sta) {
2587 rcu_read_unlock();
2588 return -ENOLINK;
2589 }
2590
2591 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2592 rcu_read_unlock();
2593 break;
2594 case NL80211_TDLS_DISABLE_LINK:
2595 return sta_info_destroy_addr(sdata, peer);
2596 case NL80211_TDLS_TEARDOWN:
2597 case NL80211_TDLS_SETUP:
2598 case NL80211_TDLS_DISCOVERY_REQ:
2599 /* We don't support in-driver setup/teardown/discovery */
2600 return -ENOTSUPP;
2601 default:
2602 return -ENOTSUPP;
2603 }
2604
2605 return 0;
2606 }
2607
2608 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2609 const u8 *peer, u64 *cookie)
2610 {
2611 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2612 struct ieee80211_local *local = sdata->local;
2613 struct ieee80211_qos_hdr *nullfunc;
2614 struct sk_buff *skb;
2615 int size = sizeof(*nullfunc);
2616 __le16 fc;
2617 bool qos;
2618 struct ieee80211_tx_info *info;
2619 struct sta_info *sta;
2620
2621 rcu_read_lock();
2622 sta = sta_info_get(sdata, peer);
2623 if (sta) {
2624 qos = test_sta_flag(sta, WLAN_STA_WME);
2625 rcu_read_unlock();
2626 } else {
2627 rcu_read_unlock();
2628 return -ENOLINK;
2629 }
2630
2631 if (qos) {
2632 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2633 IEEE80211_STYPE_QOS_NULLFUNC |
2634 IEEE80211_FCTL_FROMDS);
2635 } else {
2636 size -= 2;
2637 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2638 IEEE80211_STYPE_NULLFUNC |
2639 IEEE80211_FCTL_FROMDS);
2640 }
2641
2642 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2643 if (!skb)
2644 return -ENOMEM;
2645
2646 skb->dev = dev;
2647
2648 skb_reserve(skb, local->hw.extra_tx_headroom);
2649
2650 nullfunc = (void *) skb_put(skb, size);
2651 nullfunc->frame_control = fc;
2652 nullfunc->duration_id = 0;
2653 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2654 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2655 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2656 nullfunc->seq_ctrl = 0;
2657
2658 info = IEEE80211_SKB_CB(skb);
2659
2660 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2661 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2662
2663 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2664 skb->priority = 7;
2665 if (qos)
2666 nullfunc->qos_ctrl = cpu_to_le16(7);
2667
2668 local_bh_disable();
2669 ieee80211_xmit(sdata, skb);
2670 local_bh_enable();
2671
2672 *cookie = (unsigned long) skb;
2673 return 0;
2674 }
2675
2676 static struct ieee80211_channel *
2677 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2678 {
2679 struct ieee80211_local *local = wiphy_priv(wiphy);
2680
2681 return local->oper_channel;
2682 }
2683
2684 struct cfg80211_ops mac80211_config_ops = {
2685 .add_virtual_intf = ieee80211_add_iface,
2686 .del_virtual_intf = ieee80211_del_iface,
2687 .change_virtual_intf = ieee80211_change_iface,
2688 .add_key = ieee80211_add_key,
2689 .del_key = ieee80211_del_key,
2690 .get_key = ieee80211_get_key,
2691 .set_default_key = ieee80211_config_default_key,
2692 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2693 .start_ap = ieee80211_start_ap,
2694 .change_beacon = ieee80211_change_beacon,
2695 .stop_ap = ieee80211_stop_ap,
2696 .add_station = ieee80211_add_station,
2697 .del_station = ieee80211_del_station,
2698 .change_station = ieee80211_change_station,
2699 .get_station = ieee80211_get_station,
2700 .dump_station = ieee80211_dump_station,
2701 .dump_survey = ieee80211_dump_survey,
2702 #ifdef CONFIG_MAC80211_MESH
2703 .add_mpath = ieee80211_add_mpath,
2704 .del_mpath = ieee80211_del_mpath,
2705 .change_mpath = ieee80211_change_mpath,
2706 .get_mpath = ieee80211_get_mpath,
2707 .dump_mpath = ieee80211_dump_mpath,
2708 .update_mesh_config = ieee80211_update_mesh_config,
2709 .get_mesh_config = ieee80211_get_mesh_config,
2710 .join_mesh = ieee80211_join_mesh,
2711 .leave_mesh = ieee80211_leave_mesh,
2712 #endif
2713 .change_bss = ieee80211_change_bss,
2714 .set_txq_params = ieee80211_set_txq_params,
2715 .set_channel = ieee80211_set_channel,
2716 .suspend = ieee80211_suspend,
2717 .resume = ieee80211_resume,
2718 .scan = ieee80211_scan,
2719 .sched_scan_start = ieee80211_sched_scan_start,
2720 .sched_scan_stop = ieee80211_sched_scan_stop,
2721 .auth = ieee80211_auth,
2722 .assoc = ieee80211_assoc,
2723 .deauth = ieee80211_deauth,
2724 .disassoc = ieee80211_disassoc,
2725 .join_ibss = ieee80211_join_ibss,
2726 .leave_ibss = ieee80211_leave_ibss,
2727 .set_wiphy_params = ieee80211_set_wiphy_params,
2728 .set_tx_power = ieee80211_set_tx_power,
2729 .get_tx_power = ieee80211_get_tx_power,
2730 .set_wds_peer = ieee80211_set_wds_peer,
2731 .rfkill_poll = ieee80211_rfkill_poll,
2732 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2733 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2734 .set_power_mgmt = ieee80211_set_power_mgmt,
2735 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2736 .remain_on_channel = ieee80211_remain_on_channel,
2737 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2738 .mgmt_tx = ieee80211_mgmt_tx,
2739 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2740 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2741 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2742 .set_antenna = ieee80211_set_antenna,
2743 .get_antenna = ieee80211_get_antenna,
2744 .set_ringparam = ieee80211_set_ringparam,
2745 .get_ringparam = ieee80211_get_ringparam,
2746 .set_rekey_data = ieee80211_set_rekey_data,
2747 .tdls_oper = ieee80211_tdls_oper,
2748 .tdls_mgmt = ieee80211_tdls_mgmt,
2749 .probe_client = ieee80211_probe_client,
2750 .get_channel = ieee80211_wiphy_get_channel,
2751 .set_noack_map = ieee80211_set_noack_map,
2752 };
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