cfg80211: restructure AP/GO mode API
[linux-2.6.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 #endif
416         }
417
418         sinfo->bss_param.flags = 0;
419         if (sdata->vif.bss_conf.use_cts_prot)
420                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
421         if (sdata->vif.bss_conf.use_short_preamble)
422                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
423         if (sdata->vif.bss_conf.use_short_slot)
424                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
425         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
426         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
427
428         sinfo->sta_flags.set = 0;
429         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
430                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
431                                 BIT(NL80211_STA_FLAG_WME) |
432                                 BIT(NL80211_STA_FLAG_MFP) |
433                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
434                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
435         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
436                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
437         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
438                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
439         if (test_sta_flag(sta, WLAN_STA_WME))
440                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
441         if (test_sta_flag(sta, WLAN_STA_MFP))
442                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
443         if (test_sta_flag(sta, WLAN_STA_AUTH))
444                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
445         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
446                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
447 }
448
449
450 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
451                                  int idx, u8 *mac, struct station_info *sinfo)
452 {
453         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
454         struct sta_info *sta;
455         int ret = -ENOENT;
456
457         rcu_read_lock();
458
459         sta = sta_info_get_by_idx(sdata, idx);
460         if (sta) {
461                 ret = 0;
462                 memcpy(mac, sta->sta.addr, ETH_ALEN);
463                 sta_set_sinfo(sta, sinfo);
464         }
465
466         rcu_read_unlock();
467
468         return ret;
469 }
470
471 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
472                                  int idx, struct survey_info *survey)
473 {
474         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
475
476         return drv_get_survey(local, idx, survey);
477 }
478
479 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
480                                  u8 *mac, struct station_info *sinfo)
481 {
482         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
483         struct sta_info *sta;
484         int ret = -ENOENT;
485
486         rcu_read_lock();
487
488         sta = sta_info_get_bss(sdata, mac);
489         if (sta) {
490                 ret = 0;
491                 sta_set_sinfo(sta, sinfo);
492         }
493
494         rcu_read_unlock();
495
496         return ret;
497 }
498
499 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
500                                     const u8 *resp, size_t resp_len)
501 {
502         struct sk_buff *new, *old;
503
504         if (!resp || !resp_len)
505                 return 1;
506
507         old = rtnl_dereference(sdata->u.ap.probe_resp);
508
509         new = dev_alloc_skb(resp_len);
510         if (!new)
511                 return -ENOMEM;
512
513         memcpy(skb_put(new, resp_len), resp, resp_len);
514
515         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
516         if (old) {
517                 /* TODO: use call_rcu() */
518                 synchronize_rcu();
519                 dev_kfree_skb(old);
520         }
521
522         return 0;
523 }
524
525 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
526                                    struct cfg80211_beacon_data *params)
527 {
528         struct beacon_data *new, *old;
529         int new_head_len, new_tail_len;
530         int size, err;
531         u32 changed = BSS_CHANGED_BEACON;
532
533         old = rtnl_dereference(sdata->u.ap.beacon);
534
535         /* Need to have a beacon head if we don't have one yet */
536         if (!params->head && !old)
537                 return -EINVAL;
538
539         /* new or old head? */
540         if (params->head)
541                 new_head_len = params->head_len;
542         else
543                 new_head_len = old->head_len;
544
545         /* new or old tail? */
546         if (params->tail || !old)
547                 /* params->tail_len will be zero for !params->tail */
548                 new_tail_len = params->tail_len;
549         else
550                 new_tail_len = old->tail_len;
551
552         size = sizeof(*new) + new_head_len + new_tail_len;
553
554         new = kzalloc(size, GFP_KERNEL);
555         if (!new)
556                 return -ENOMEM;
557
558         /* start filling the new info now */
559
560         /*
561          * pointers go into the block we allocated,
562          * memory is | beacon_data | head | tail |
563          */
564         new->head = ((u8 *) new) + sizeof(*new);
565         new->tail = new->head + new_head_len;
566         new->head_len = new_head_len;
567         new->tail_len = new_tail_len;
568
569         /* copy in head */
570         if (params->head)
571                 memcpy(new->head, params->head, new_head_len);
572         else
573                 memcpy(new->head, old->head, new_head_len);
574
575         /* copy in optional tail */
576         if (params->tail)
577                 memcpy(new->tail, params->tail, new_tail_len);
578         else
579                 if (old)
580                         memcpy(new->tail, old->tail, new_tail_len);
581
582         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
583                                        params->probe_resp_len);
584         if (err < 0)
585                 return err;
586         if (err == 0)
587                 changed |= BSS_CHANGED_AP_PROBE_RESP;
588
589         rcu_assign_pointer(sdata->u.ap.beacon, new);
590
591         if (old)
592                 kfree_rcu(old, rcu_head);
593
594         return changed;
595 }
596
597 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
598                               struct cfg80211_ap_settings *params)
599 {
600         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
601         struct beacon_data *old;
602         struct ieee80211_sub_if_data *vlan;
603         u32 changed = BSS_CHANGED_BEACON_INT |
604                       BSS_CHANGED_BEACON_ENABLED |
605                       BSS_CHANGED_BEACON |
606                       BSS_CHANGED_SSID;
607         int err;
608
609         old = rtnl_dereference(sdata->u.ap.beacon);
610         if (old)
611                 return -EALREADY;
612
613         /*
614          * Apply control port protocol, this allows us to
615          * not encrypt dynamic WEP control frames.
616          */
617         sdata->control_port_protocol = params->crypto.control_port_ethertype;
618         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
619         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
620                 vlan->control_port_protocol =
621                         params->crypto.control_port_ethertype;
622                 vlan->control_port_no_encrypt =
623                         params->crypto.control_port_no_encrypt;
624         }
625
626         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
627         sdata->vif.bss_conf.dtim_period = params->dtim_period;
628
629         sdata->vif.bss_conf.ssid_len = params->ssid_len;
630         if (params->ssid_len)
631                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
632                        params->ssid_len);
633         sdata->vif.bss_conf.hidden_ssid =
634                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
635
636         err = ieee80211_assign_beacon(sdata, &params->beacon);
637         if (err < 0)
638                 return err;
639         changed |= err;
640
641         ieee80211_bss_info_change_notify(sdata, changed);
642
643         return 0;
644 }
645
646 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
647                                    struct cfg80211_beacon_data *params)
648 {
649         struct ieee80211_sub_if_data *sdata;
650         struct beacon_data *old;
651         int err;
652
653         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
654
655         old = rtnl_dereference(sdata->u.ap.beacon);
656         if (!old)
657                 return -ENOENT;
658
659         err = ieee80211_assign_beacon(sdata, params);
660         if (err < 0)
661                 return err;
662         ieee80211_bss_info_change_notify(sdata, err);
663         return 0;
664 }
665
666 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
667 {
668         struct ieee80211_sub_if_data *sdata;
669         struct beacon_data *old;
670
671         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
672
673         old = rtnl_dereference(sdata->u.ap.beacon);
674         if (!old)
675                 return -ENOENT;
676
677         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
678
679         kfree_rcu(old, rcu_head);
680
681         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
682
683         return 0;
684 }
685
686 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
687 struct iapp_layer2_update {
688         u8 da[ETH_ALEN];        /* broadcast */
689         u8 sa[ETH_ALEN];        /* STA addr */
690         __be16 len;             /* 6 */
691         u8 dsap;                /* 0 */
692         u8 ssap;                /* 0 */
693         u8 control;
694         u8 xid_info[3];
695 } __packed;
696
697 static void ieee80211_send_layer2_update(struct sta_info *sta)
698 {
699         struct iapp_layer2_update *msg;
700         struct sk_buff *skb;
701
702         /* Send Level 2 Update Frame to update forwarding tables in layer 2
703          * bridge devices */
704
705         skb = dev_alloc_skb(sizeof(*msg));
706         if (!skb)
707                 return;
708         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
709
710         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
711          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
712
713         memset(msg->da, 0xff, ETH_ALEN);
714         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
715         msg->len = htons(6);
716         msg->dsap = 0;
717         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
718         msg->control = 0xaf;    /* XID response lsb.1111F101.
719                                  * F=0 (no poll command; unsolicited frame) */
720         msg->xid_info[0] = 0x81;        /* XID format identifier */
721         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
722         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
723
724         skb->dev = sta->sdata->dev;
725         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
726         memset(skb->cb, 0, sizeof(skb->cb));
727         netif_rx_ni(skb);
728 }
729
730 static int sta_apply_parameters(struct ieee80211_local *local,
731                                 struct sta_info *sta,
732                                 struct station_parameters *params)
733 {
734         int ret = 0;
735         u32 rates;
736         int i, j;
737         struct ieee80211_supported_band *sband;
738         struct ieee80211_sub_if_data *sdata = sta->sdata;
739         u32 mask, set;
740
741         sband = local->hw.wiphy->bands[local->oper_channel->band];
742
743         mask = params->sta_flags_mask;
744         set = params->sta_flags_set;
745
746         /*
747          * In mesh mode, we can clear AUTHENTICATED flag but must
748          * also make ASSOCIATED follow appropriately for the driver
749          * API. See also below, after AUTHORIZED changes.
750          */
751         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
752                 /* cfg80211 should not allow this in non-mesh modes */
753                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
754                         return -EINVAL;
755
756                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
757                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
758                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
759                         if (ret)
760                                 return ret;
761                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
762                         if (ret)
763                                 return ret;
764                 }
765         }
766
767         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
768                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
769                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
770                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
771                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
772                 if (ret)
773                         return ret;
774         }
775
776         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
777                 /* cfg80211 should not allow this in non-mesh modes */
778                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
779                         return -EINVAL;
780
781                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
782                     test_sta_flag(sta, WLAN_STA_AUTH)) {
783                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
784                         if (ret)
785                                 return ret;
786                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
787                         if (ret)
788                                 return ret;
789                 }
790         }
791
792
793         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
794                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
795                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
796                 else
797                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
798         }
799
800         if (mask & BIT(NL80211_STA_FLAG_WME)) {
801                 if (set & BIT(NL80211_STA_FLAG_WME)) {
802                         set_sta_flag(sta, WLAN_STA_WME);
803                         sta->sta.wme = true;
804                 } else {
805                         clear_sta_flag(sta, WLAN_STA_WME);
806                         sta->sta.wme = false;
807                 }
808         }
809
810         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
811                 if (set & BIT(NL80211_STA_FLAG_MFP))
812                         set_sta_flag(sta, WLAN_STA_MFP);
813                 else
814                         clear_sta_flag(sta, WLAN_STA_MFP);
815         }
816
817         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
818                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
819                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
820                 else
821                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
822         }
823
824         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
825                 sta->sta.uapsd_queues = params->uapsd_queues;
826                 sta->sta.max_sp = params->max_sp;
827         }
828
829         /*
830          * cfg80211 validates this (1-2007) and allows setting the AID
831          * only when creating a new station entry
832          */
833         if (params->aid)
834                 sta->sta.aid = params->aid;
835
836         /*
837          * FIXME: updating the following information is racy when this
838          *        function is called from ieee80211_change_station().
839          *        However, all this information should be static so
840          *        maybe we should just reject attemps to change it.
841          */
842
843         if (params->listen_interval >= 0)
844                 sta->listen_interval = params->listen_interval;
845
846         if (params->supported_rates) {
847                 rates = 0;
848
849                 for (i = 0; i < params->supported_rates_len; i++) {
850                         int rate = (params->supported_rates[i] & 0x7f) * 5;
851                         for (j = 0; j < sband->n_bitrates; j++) {
852                                 if (sband->bitrates[j].bitrate == rate)
853                                         rates |= BIT(j);
854                         }
855                 }
856                 sta->sta.supp_rates[local->oper_channel->band] = rates;
857         }
858
859         if (params->ht_capa)
860                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
861                                                   params->ht_capa,
862                                                   &sta->sta.ht_cap);
863
864         if (ieee80211_vif_is_mesh(&sdata->vif)) {
865 #ifdef CONFIG_MAC80211_MESH
866                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
867                         switch (params->plink_state) {
868                         case NL80211_PLINK_LISTEN:
869                         case NL80211_PLINK_ESTAB:
870                         case NL80211_PLINK_BLOCKED:
871                                 sta->plink_state = params->plink_state;
872                                 break;
873                         default:
874                                 /*  nothing  */
875                                 break;
876                         }
877                 else
878                         switch (params->plink_action) {
879                         case PLINK_ACTION_OPEN:
880                                 mesh_plink_open(sta);
881                                 break;
882                         case PLINK_ACTION_BLOCK:
883                                 mesh_plink_block(sta);
884                                 break;
885                         }
886 #endif
887         }
888
889         return 0;
890 }
891
892 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
893                                  u8 *mac, struct station_parameters *params)
894 {
895         struct ieee80211_local *local = wiphy_priv(wiphy);
896         struct sta_info *sta;
897         struct ieee80211_sub_if_data *sdata;
898         int err;
899         int layer2_update;
900
901         if (params->vlan) {
902                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
903
904                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
905                     sdata->vif.type != NL80211_IFTYPE_AP)
906                         return -EINVAL;
907         } else
908                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
909
910         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
911                 return -EINVAL;
912
913         if (is_multicast_ether_addr(mac))
914                 return -EINVAL;
915
916         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
917         if (!sta)
918                 return -ENOMEM;
919
920         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
921         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
922
923         err = sta_apply_parameters(local, sta, params);
924         if (err) {
925                 sta_info_free(local, sta);
926                 return err;
927         }
928
929         /*
930          * for TDLS, rate control should be initialized only when supported
931          * rates are known.
932          */
933         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
934                 rate_control_rate_init(sta);
935
936         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
937                 sdata->vif.type == NL80211_IFTYPE_AP;
938
939         err = sta_info_insert_rcu(sta);
940         if (err) {
941                 rcu_read_unlock();
942                 return err;
943         }
944
945         if (layer2_update)
946                 ieee80211_send_layer2_update(sta);
947
948         rcu_read_unlock();
949
950         return 0;
951 }
952
953 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
954                                  u8 *mac)
955 {
956         struct ieee80211_local *local = wiphy_priv(wiphy);
957         struct ieee80211_sub_if_data *sdata;
958
959         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
960
961         if (mac)
962                 return sta_info_destroy_addr_bss(sdata, mac);
963
964         sta_info_flush(local, sdata);
965         return 0;
966 }
967
968 static int ieee80211_change_station(struct wiphy *wiphy,
969                                     struct net_device *dev,
970                                     u8 *mac,
971                                     struct station_parameters *params)
972 {
973         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
974         struct ieee80211_local *local = wiphy_priv(wiphy);
975         struct sta_info *sta;
976         struct ieee80211_sub_if_data *vlansdata;
977         int err;
978
979         mutex_lock(&local->sta_mtx);
980
981         sta = sta_info_get_bss(sdata, mac);
982         if (!sta) {
983                 mutex_unlock(&local->sta_mtx);
984                 return -ENOENT;
985         }
986
987         /* in station mode, supported rates are only valid with TDLS */
988         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
989             params->supported_rates &&
990             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
991                 mutex_unlock(&local->sta_mtx);
992                 return -EINVAL;
993         }
994
995         if (params->vlan && params->vlan != sta->sdata->dev) {
996                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
997
998                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
999                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1000                         mutex_unlock(&local->sta_mtx);
1001                         return -EINVAL;
1002                 }
1003
1004                 if (params->vlan->ieee80211_ptr->use_4addr) {
1005                         if (vlansdata->u.vlan.sta) {
1006                                 mutex_unlock(&local->sta_mtx);
1007                                 return -EBUSY;
1008                         }
1009
1010                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1011                 }
1012
1013                 sta->sdata = vlansdata;
1014                 ieee80211_send_layer2_update(sta);
1015         }
1016
1017         err = sta_apply_parameters(local, sta, params);
1018         if (err) {
1019                 mutex_unlock(&local->sta_mtx);
1020                 return err;
1021         }
1022
1023         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1024                 rate_control_rate_init(sta);
1025
1026         mutex_unlock(&local->sta_mtx);
1027
1028         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1029             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1030                 ieee80211_recalc_ps(local, -1);
1031
1032         return 0;
1033 }
1034
1035 #ifdef CONFIG_MAC80211_MESH
1036 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1037                                  u8 *dst, u8 *next_hop)
1038 {
1039         struct ieee80211_sub_if_data *sdata;
1040         struct mesh_path *mpath;
1041         struct sta_info *sta;
1042         int err;
1043
1044         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1045
1046         rcu_read_lock();
1047         sta = sta_info_get(sdata, next_hop);
1048         if (!sta) {
1049                 rcu_read_unlock();
1050                 return -ENOENT;
1051         }
1052
1053         err = mesh_path_add(dst, sdata);
1054         if (err) {
1055                 rcu_read_unlock();
1056                 return err;
1057         }
1058
1059         mpath = mesh_path_lookup(dst, sdata);
1060         if (!mpath) {
1061                 rcu_read_unlock();
1062                 return -ENXIO;
1063         }
1064         mesh_path_fix_nexthop(mpath, sta);
1065
1066         rcu_read_unlock();
1067         return 0;
1068 }
1069
1070 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1071                                  u8 *dst)
1072 {
1073         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1074
1075         if (dst)
1076                 return mesh_path_del(dst, sdata);
1077
1078         mesh_path_flush_by_iface(sdata);
1079         return 0;
1080 }
1081
1082 static int ieee80211_change_mpath(struct wiphy *wiphy,
1083                                     struct net_device *dev,
1084                                     u8 *dst, u8 *next_hop)
1085 {
1086         struct ieee80211_sub_if_data *sdata;
1087         struct mesh_path *mpath;
1088         struct sta_info *sta;
1089
1090         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1091
1092         rcu_read_lock();
1093
1094         sta = sta_info_get(sdata, next_hop);
1095         if (!sta) {
1096                 rcu_read_unlock();
1097                 return -ENOENT;
1098         }
1099
1100         mpath = mesh_path_lookup(dst, sdata);
1101         if (!mpath) {
1102                 rcu_read_unlock();
1103                 return -ENOENT;
1104         }
1105
1106         mesh_path_fix_nexthop(mpath, sta);
1107
1108         rcu_read_unlock();
1109         return 0;
1110 }
1111
1112 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1113                             struct mpath_info *pinfo)
1114 {
1115         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1116
1117         if (next_hop_sta)
1118                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1119         else
1120                 memset(next_hop, 0, ETH_ALEN);
1121
1122         pinfo->generation = mesh_paths_generation;
1123
1124         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1125                         MPATH_INFO_SN |
1126                         MPATH_INFO_METRIC |
1127                         MPATH_INFO_EXPTIME |
1128                         MPATH_INFO_DISCOVERY_TIMEOUT |
1129                         MPATH_INFO_DISCOVERY_RETRIES |
1130                         MPATH_INFO_FLAGS;
1131
1132         pinfo->frame_qlen = mpath->frame_queue.qlen;
1133         pinfo->sn = mpath->sn;
1134         pinfo->metric = mpath->metric;
1135         if (time_before(jiffies, mpath->exp_time))
1136                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1137         pinfo->discovery_timeout =
1138                         jiffies_to_msecs(mpath->discovery_timeout);
1139         pinfo->discovery_retries = mpath->discovery_retries;
1140         pinfo->flags = 0;
1141         if (mpath->flags & MESH_PATH_ACTIVE)
1142                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1143         if (mpath->flags & MESH_PATH_RESOLVING)
1144                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1145         if (mpath->flags & MESH_PATH_SN_VALID)
1146                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1147         if (mpath->flags & MESH_PATH_FIXED)
1148                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1149         if (mpath->flags & MESH_PATH_RESOLVING)
1150                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1151
1152         pinfo->flags = mpath->flags;
1153 }
1154
1155 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1156                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1157
1158 {
1159         struct ieee80211_sub_if_data *sdata;
1160         struct mesh_path *mpath;
1161
1162         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1163
1164         rcu_read_lock();
1165         mpath = mesh_path_lookup(dst, sdata);
1166         if (!mpath) {
1167                 rcu_read_unlock();
1168                 return -ENOENT;
1169         }
1170         memcpy(dst, mpath->dst, ETH_ALEN);
1171         mpath_set_pinfo(mpath, next_hop, pinfo);
1172         rcu_read_unlock();
1173         return 0;
1174 }
1175
1176 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1177                                  int idx, u8 *dst, u8 *next_hop,
1178                                  struct mpath_info *pinfo)
1179 {
1180         struct ieee80211_sub_if_data *sdata;
1181         struct mesh_path *mpath;
1182
1183         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1184
1185         rcu_read_lock();
1186         mpath = mesh_path_lookup_by_idx(idx, sdata);
1187         if (!mpath) {
1188                 rcu_read_unlock();
1189                 return -ENOENT;
1190         }
1191         memcpy(dst, mpath->dst, ETH_ALEN);
1192         mpath_set_pinfo(mpath, next_hop, pinfo);
1193         rcu_read_unlock();
1194         return 0;
1195 }
1196
1197 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1198                                 struct net_device *dev,
1199                                 struct mesh_config *conf)
1200 {
1201         struct ieee80211_sub_if_data *sdata;
1202         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1203
1204         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1205         return 0;
1206 }
1207
1208 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1209 {
1210         return (mask >> (parm-1)) & 0x1;
1211 }
1212
1213 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1214                 const struct mesh_setup *setup)
1215 {
1216         u8 *new_ie;
1217         const u8 *old_ie;
1218         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1219                                         struct ieee80211_sub_if_data, u.mesh);
1220
1221         /* allocate information elements */
1222         new_ie = NULL;
1223         old_ie = ifmsh->ie;
1224
1225         if (setup->ie_len) {
1226                 new_ie = kmemdup(setup->ie, setup->ie_len,
1227                                 GFP_KERNEL);
1228                 if (!new_ie)
1229                         return -ENOMEM;
1230         }
1231         ifmsh->ie_len = setup->ie_len;
1232         ifmsh->ie = new_ie;
1233         kfree(old_ie);
1234
1235         /* now copy the rest of the setup parameters */
1236         ifmsh->mesh_id_len = setup->mesh_id_len;
1237         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1238         ifmsh->mesh_pp_id = setup->path_sel_proto;
1239         ifmsh->mesh_pm_id = setup->path_metric;
1240         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1241         if (setup->is_authenticated)
1242                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1243         if (setup->is_secure)
1244                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1245
1246         /* mcast rate setting in Mesh Node */
1247         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1248                                                 sizeof(setup->mcast_rate));
1249
1250         return 0;
1251 }
1252
1253 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1254                                         struct net_device *dev, u32 mask,
1255                                         const struct mesh_config *nconf)
1256 {
1257         struct mesh_config *conf;
1258         struct ieee80211_sub_if_data *sdata;
1259         struct ieee80211_if_mesh *ifmsh;
1260
1261         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1262         ifmsh = &sdata->u.mesh;
1263
1264         /* Set the config options which we are interested in setting */
1265         conf = &(sdata->u.mesh.mshcfg);
1266         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1267                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1268         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1269                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1270         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1271                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1272         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1273                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1274         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1275                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1276         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1277                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1278         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1279                 conf->dot11MeshTTL = nconf->element_ttl;
1280         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1281                 conf->auto_open_plinks = nconf->auto_open_plinks;
1282         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1283                 conf->dot11MeshHWMPmaxPREQretries =
1284                         nconf->dot11MeshHWMPmaxPREQretries;
1285         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1286                 conf->path_refresh_time = nconf->path_refresh_time;
1287         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1288                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1289         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1290                 conf->dot11MeshHWMPactivePathTimeout =
1291                         nconf->dot11MeshHWMPactivePathTimeout;
1292         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1293                 conf->dot11MeshHWMPpreqMinInterval =
1294                         nconf->dot11MeshHWMPpreqMinInterval;
1295         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1296                 conf->dot11MeshHWMPperrMinInterval =
1297                         nconf->dot11MeshHWMPperrMinInterval;
1298         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1299                            mask))
1300                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1301                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1302         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1303                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1304                 ieee80211_mesh_root_setup(ifmsh);
1305         }
1306         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1307                 /* our current gate announcement implementation rides on root
1308                  * announcements, so require this ifmsh to also be a root node
1309                  * */
1310                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1311                     !conf->dot11MeshHWMPRootMode) {
1312                         conf->dot11MeshHWMPRootMode = 1;
1313                         ieee80211_mesh_root_setup(ifmsh);
1314                 }
1315                 conf->dot11MeshGateAnnouncementProtocol =
1316                         nconf->dot11MeshGateAnnouncementProtocol;
1317         }
1318         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1319                 conf->dot11MeshHWMPRannInterval =
1320                         nconf->dot11MeshHWMPRannInterval;
1321         }
1322         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1323                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1324         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1325                 /* our RSSI threshold implementation is supported only for
1326                  * devices that report signal in dBm.
1327                  */
1328                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1329                         return -ENOTSUPP;
1330                 conf->rssi_threshold = nconf->rssi_threshold;
1331         }
1332         return 0;
1333 }
1334
1335 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1336                                const struct mesh_config *conf,
1337                                const struct mesh_setup *setup)
1338 {
1339         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1340         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1341         int err;
1342
1343         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1344         err = copy_mesh_setup(ifmsh, setup);
1345         if (err)
1346                 return err;
1347         ieee80211_start_mesh(sdata);
1348
1349         return 0;
1350 }
1351
1352 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1353 {
1354         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1355
1356         ieee80211_stop_mesh(sdata);
1357
1358         return 0;
1359 }
1360 #endif
1361
1362 static int ieee80211_change_bss(struct wiphy *wiphy,
1363                                 struct net_device *dev,
1364                                 struct bss_parameters *params)
1365 {
1366         struct ieee80211_sub_if_data *sdata;
1367         u32 changed = 0;
1368
1369         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1370
1371         if (params->use_cts_prot >= 0) {
1372                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1373                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1374         }
1375         if (params->use_short_preamble >= 0) {
1376                 sdata->vif.bss_conf.use_short_preamble =
1377                         params->use_short_preamble;
1378                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1379         }
1380
1381         if (!sdata->vif.bss_conf.use_short_slot &&
1382             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1383                 sdata->vif.bss_conf.use_short_slot = true;
1384                 changed |= BSS_CHANGED_ERP_SLOT;
1385         }
1386
1387         if (params->use_short_slot_time >= 0) {
1388                 sdata->vif.bss_conf.use_short_slot =
1389                         params->use_short_slot_time;
1390                 changed |= BSS_CHANGED_ERP_SLOT;
1391         }
1392
1393         if (params->basic_rates) {
1394                 int i, j;
1395                 u32 rates = 0;
1396                 struct ieee80211_local *local = wiphy_priv(wiphy);
1397                 struct ieee80211_supported_band *sband =
1398                         wiphy->bands[local->oper_channel->band];
1399
1400                 for (i = 0; i < params->basic_rates_len; i++) {
1401                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1402                         for (j = 0; j < sband->n_bitrates; j++) {
1403                                 if (sband->bitrates[j].bitrate == rate)
1404                                         rates |= BIT(j);
1405                         }
1406                 }
1407                 sdata->vif.bss_conf.basic_rates = rates;
1408                 changed |= BSS_CHANGED_BASIC_RATES;
1409         }
1410
1411         if (params->ap_isolate >= 0) {
1412                 if (params->ap_isolate)
1413                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1414                 else
1415                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1416         }
1417
1418         if (params->ht_opmode >= 0) {
1419                 sdata->vif.bss_conf.ht_operation_mode =
1420                         (u16) params->ht_opmode;
1421                 changed |= BSS_CHANGED_HT;
1422         }
1423
1424         ieee80211_bss_info_change_notify(sdata, changed);
1425
1426         return 0;
1427 }
1428
1429 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1430                                     struct net_device *dev,
1431                                     struct ieee80211_txq_params *params)
1432 {
1433         struct ieee80211_local *local = wiphy_priv(wiphy);
1434         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1435         struct ieee80211_tx_queue_params p;
1436
1437         if (!local->ops->conf_tx)
1438                 return -EOPNOTSUPP;
1439
1440         memset(&p, 0, sizeof(p));
1441         p.aifs = params->aifs;
1442         p.cw_max = params->cwmax;
1443         p.cw_min = params->cwmin;
1444         p.txop = params->txop;
1445
1446         /*
1447          * Setting tx queue params disables u-apsd because it's only
1448          * called in master mode.
1449          */
1450         p.uapsd = false;
1451
1452         if (params->queue >= local->hw.queues)
1453                 return -EINVAL;
1454
1455         sdata->tx_conf[params->queue] = p;
1456         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1457                 wiphy_debug(local->hw.wiphy,
1458                             "failed to set TX queue parameters for queue %d\n",
1459                             params->queue);
1460                 return -EINVAL;
1461         }
1462
1463         return 0;
1464 }
1465
1466 static int ieee80211_set_channel(struct wiphy *wiphy,
1467                                  struct net_device *netdev,
1468                                  struct ieee80211_channel *chan,
1469                                  enum nl80211_channel_type channel_type)
1470 {
1471         struct ieee80211_local *local = wiphy_priv(wiphy);
1472         struct ieee80211_sub_if_data *sdata = NULL;
1473         struct ieee80211_channel *old_oper;
1474         enum nl80211_channel_type old_oper_type;
1475         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1476
1477         if (netdev)
1478                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1479
1480         switch (ieee80211_get_channel_mode(local, NULL)) {
1481         case CHAN_MODE_HOPPING:
1482                 return -EBUSY;
1483         case CHAN_MODE_FIXED:
1484                 if (local->oper_channel != chan)
1485                         return -EBUSY;
1486                 if (!sdata && local->_oper_channel_type == channel_type)
1487                         return 0;
1488                 break;
1489         case CHAN_MODE_UNDEFINED:
1490                 break;
1491         }
1492
1493         if (sdata)
1494                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1495         old_oper_type = local->_oper_channel_type;
1496
1497         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1498                 return -EBUSY;
1499
1500         old_oper = local->oper_channel;
1501         local->oper_channel = chan;
1502
1503         /* Update driver if changes were actually made. */
1504         if ((old_oper != local->oper_channel) ||
1505             (old_oper_type != local->_oper_channel_type))
1506                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1507
1508         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1509             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1510                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1511
1512         return 0;
1513 }
1514
1515 #ifdef CONFIG_PM
1516 static int ieee80211_suspend(struct wiphy *wiphy,
1517                              struct cfg80211_wowlan *wowlan)
1518 {
1519         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1520 }
1521
1522 static int ieee80211_resume(struct wiphy *wiphy)
1523 {
1524         return __ieee80211_resume(wiphy_priv(wiphy));
1525 }
1526 #else
1527 #define ieee80211_suspend NULL
1528 #define ieee80211_resume NULL
1529 #endif
1530
1531 static int ieee80211_scan(struct wiphy *wiphy,
1532                           struct net_device *dev,
1533                           struct cfg80211_scan_request *req)
1534 {
1535         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1536
1537         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1538         case NL80211_IFTYPE_STATION:
1539         case NL80211_IFTYPE_ADHOC:
1540         case NL80211_IFTYPE_MESH_POINT:
1541         case NL80211_IFTYPE_P2P_CLIENT:
1542                 break;
1543         case NL80211_IFTYPE_P2P_GO:
1544                 if (sdata->local->ops->hw_scan)
1545                         break;
1546                 /*
1547                  * FIXME: implement NoA while scanning in software,
1548                  * for now fall through to allow scanning only when
1549                  * beaconing hasn't been configured yet
1550                  */
1551         case NL80211_IFTYPE_AP:
1552                 if (sdata->u.ap.beacon)
1553                         return -EOPNOTSUPP;
1554                 break;
1555         default:
1556                 return -EOPNOTSUPP;
1557         }
1558
1559         return ieee80211_request_scan(sdata, req);
1560 }
1561
1562 static int
1563 ieee80211_sched_scan_start(struct wiphy *wiphy,
1564                            struct net_device *dev,
1565                            struct cfg80211_sched_scan_request *req)
1566 {
1567         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1568
1569         if (!sdata->local->ops->sched_scan_start)
1570                 return -EOPNOTSUPP;
1571
1572         return ieee80211_request_sched_scan_start(sdata, req);
1573 }
1574
1575 static int
1576 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1577 {
1578         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1579
1580         if (!sdata->local->ops->sched_scan_stop)
1581                 return -EOPNOTSUPP;
1582
1583         return ieee80211_request_sched_scan_stop(sdata);
1584 }
1585
1586 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1587                           struct cfg80211_auth_request *req)
1588 {
1589         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1590 }
1591
1592 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1593                            struct cfg80211_assoc_request *req)
1594 {
1595         struct ieee80211_local *local = wiphy_priv(wiphy);
1596         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1597
1598         switch (ieee80211_get_channel_mode(local, sdata)) {
1599         case CHAN_MODE_HOPPING:
1600                 return -EBUSY;
1601         case CHAN_MODE_FIXED:
1602                 if (local->oper_channel == req->bss->channel)
1603                         break;
1604                 return -EBUSY;
1605         case CHAN_MODE_UNDEFINED:
1606                 break;
1607         }
1608
1609         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1610 }
1611
1612 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1613                             struct cfg80211_deauth_request *req)
1614 {
1615         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1616 }
1617
1618 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1619                               struct cfg80211_disassoc_request *req)
1620 {
1621         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1622 }
1623
1624 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1625                                struct cfg80211_ibss_params *params)
1626 {
1627         struct ieee80211_local *local = wiphy_priv(wiphy);
1628         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629
1630         switch (ieee80211_get_channel_mode(local, sdata)) {
1631         case CHAN_MODE_HOPPING:
1632                 return -EBUSY;
1633         case CHAN_MODE_FIXED:
1634                 if (!params->channel_fixed)
1635                         return -EBUSY;
1636                 if (local->oper_channel == params->channel)
1637                         break;
1638                 return -EBUSY;
1639         case CHAN_MODE_UNDEFINED:
1640                 break;
1641         }
1642
1643         return ieee80211_ibss_join(sdata, params);
1644 }
1645
1646 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1647 {
1648         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1649
1650         return ieee80211_ibss_leave(sdata);
1651 }
1652
1653 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1654 {
1655         struct ieee80211_local *local = wiphy_priv(wiphy);
1656         int err;
1657
1658         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1659                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1660
1661                 if (err)
1662                         return err;
1663         }
1664
1665         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1666                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1667
1668                 if (err)
1669                         return err;
1670         }
1671
1672         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1673                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1674
1675                 if (err)
1676                         return err;
1677         }
1678
1679         if (changed & WIPHY_PARAM_RETRY_SHORT)
1680                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1681         if (changed & WIPHY_PARAM_RETRY_LONG)
1682                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1683         if (changed &
1684             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1685                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1686
1687         return 0;
1688 }
1689
1690 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1691                                   enum nl80211_tx_power_setting type, int mbm)
1692 {
1693         struct ieee80211_local *local = wiphy_priv(wiphy);
1694         struct ieee80211_channel *chan = local->hw.conf.channel;
1695         u32 changes = 0;
1696
1697         switch (type) {
1698         case NL80211_TX_POWER_AUTOMATIC:
1699                 local->user_power_level = -1;
1700                 break;
1701         case NL80211_TX_POWER_LIMITED:
1702                 if (mbm < 0 || (mbm % 100))
1703                         return -EOPNOTSUPP;
1704                 local->user_power_level = MBM_TO_DBM(mbm);
1705                 break;
1706         case NL80211_TX_POWER_FIXED:
1707                 if (mbm < 0 || (mbm % 100))
1708                         return -EOPNOTSUPP;
1709                 /* TODO: move to cfg80211 when it knows the channel */
1710                 if (MBM_TO_DBM(mbm) > chan->max_power)
1711                         return -EINVAL;
1712                 local->user_power_level = MBM_TO_DBM(mbm);
1713                 break;
1714         }
1715
1716         ieee80211_hw_config(local, changes);
1717
1718         return 0;
1719 }
1720
1721 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1722 {
1723         struct ieee80211_local *local = wiphy_priv(wiphy);
1724
1725         *dbm = local->hw.conf.power_level;
1726
1727         return 0;
1728 }
1729
1730 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1731                                   const u8 *addr)
1732 {
1733         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1734
1735         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1736
1737         return 0;
1738 }
1739
1740 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1741 {
1742         struct ieee80211_local *local = wiphy_priv(wiphy);
1743
1744         drv_rfkill_poll(local);
1745 }
1746
1747 #ifdef CONFIG_NL80211_TESTMODE
1748 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1749 {
1750         struct ieee80211_local *local = wiphy_priv(wiphy);
1751
1752         if (!local->ops->testmode_cmd)
1753                 return -EOPNOTSUPP;
1754
1755         return local->ops->testmode_cmd(&local->hw, data, len);
1756 }
1757
1758 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1759                                    struct sk_buff *skb,
1760                                    struct netlink_callback *cb,
1761                                    void *data, int len)
1762 {
1763         struct ieee80211_local *local = wiphy_priv(wiphy);
1764
1765         if (!local->ops->testmode_dump)
1766                 return -EOPNOTSUPP;
1767
1768         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1769 }
1770 #endif
1771
1772 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1773                              enum ieee80211_smps_mode smps_mode)
1774 {
1775         const u8 *ap;
1776         enum ieee80211_smps_mode old_req;
1777         int err;
1778
1779         lockdep_assert_held(&sdata->u.mgd.mtx);
1780
1781         old_req = sdata->u.mgd.req_smps;
1782         sdata->u.mgd.req_smps = smps_mode;
1783
1784         if (old_req == smps_mode &&
1785             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1786                 return 0;
1787
1788         /*
1789          * If not associated, or current association is not an HT
1790          * association, there's no need to send an action frame.
1791          */
1792         if (!sdata->u.mgd.associated ||
1793             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1794                 mutex_lock(&sdata->local->iflist_mtx);
1795                 ieee80211_recalc_smps(sdata->local);
1796                 mutex_unlock(&sdata->local->iflist_mtx);
1797                 return 0;
1798         }
1799
1800         ap = sdata->u.mgd.associated->bssid;
1801
1802         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1803                 if (sdata->u.mgd.powersave)
1804                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1805                 else
1806                         smps_mode = IEEE80211_SMPS_OFF;
1807         }
1808
1809         /* send SM PS frame to AP */
1810         err = ieee80211_send_smps_action(sdata, smps_mode,
1811                                          ap, ap);
1812         if (err)
1813                 sdata->u.mgd.req_smps = old_req;
1814
1815         return err;
1816 }
1817
1818 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1819                                     bool enabled, int timeout)
1820 {
1821         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1822         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1823
1824         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1825                 return -EOPNOTSUPP;
1826
1827         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1828                 return -EOPNOTSUPP;
1829
1830         if (enabled == sdata->u.mgd.powersave &&
1831             timeout == local->dynamic_ps_forced_timeout)
1832                 return 0;
1833
1834         sdata->u.mgd.powersave = enabled;
1835         local->dynamic_ps_forced_timeout = timeout;
1836
1837         /* no change, but if automatic follow powersave */
1838         mutex_lock(&sdata->u.mgd.mtx);
1839         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1840         mutex_unlock(&sdata->u.mgd.mtx);
1841
1842         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1843                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1844
1845         ieee80211_recalc_ps(local, -1);
1846
1847         return 0;
1848 }
1849
1850 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1851                                          struct net_device *dev,
1852                                          s32 rssi_thold, u32 rssi_hyst)
1853 {
1854         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1855         struct ieee80211_vif *vif = &sdata->vif;
1856         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1857
1858         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1859             rssi_hyst == bss_conf->cqm_rssi_hyst)
1860                 return 0;
1861
1862         bss_conf->cqm_rssi_thold = rssi_thold;
1863         bss_conf->cqm_rssi_hyst = rssi_hyst;
1864
1865         /* tell the driver upon association, unless already associated */
1866         if (sdata->u.mgd.associated &&
1867             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1868                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1869
1870         return 0;
1871 }
1872
1873 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1874                                       struct net_device *dev,
1875                                       const u8 *addr,
1876                                       const struct cfg80211_bitrate_mask *mask)
1877 {
1878         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1879         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1880         int i, ret;
1881
1882         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1883                 ret = drv_set_bitrate_mask(local, sdata, mask);
1884                 if (ret)
1885                         return ret;
1886         }
1887
1888         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1889                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1890                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1891                        sizeof(mask->control[i].mcs));
1892         }
1893
1894         return 0;
1895 }
1896
1897 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1898                                           struct net_device *dev,
1899                                           struct ieee80211_channel *chan,
1900                                           enum nl80211_channel_type chantype,
1901                                           unsigned int duration, u64 *cookie)
1902 {
1903         int ret;
1904         u32 random_cookie;
1905
1906         lockdep_assert_held(&local->mtx);
1907
1908         if (local->hw_roc_cookie)
1909                 return -EBUSY;
1910         /* must be nonzero */
1911         random_cookie = random32() | 1;
1912
1913         *cookie = random_cookie;
1914         local->hw_roc_dev = dev;
1915         local->hw_roc_cookie = random_cookie;
1916         local->hw_roc_channel = chan;
1917         local->hw_roc_channel_type = chantype;
1918         local->hw_roc_duration = duration;
1919         ret = drv_remain_on_channel(local, chan, chantype, duration);
1920         if (ret) {
1921                 local->hw_roc_channel = NULL;
1922                 local->hw_roc_cookie = 0;
1923         }
1924
1925         return ret;
1926 }
1927
1928 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1929                                        struct net_device *dev,
1930                                        struct ieee80211_channel *chan,
1931                                        enum nl80211_channel_type channel_type,
1932                                        unsigned int duration,
1933                                        u64 *cookie)
1934 {
1935         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1936         struct ieee80211_local *local = sdata->local;
1937
1938         if (local->ops->remain_on_channel) {
1939                 int ret;
1940
1941                 mutex_lock(&local->mtx);
1942                 ret = ieee80211_remain_on_channel_hw(local, dev,
1943                                                      chan, channel_type,
1944                                                      duration, cookie);
1945                 local->hw_roc_for_tx = false;
1946                 mutex_unlock(&local->mtx);
1947
1948                 return ret;
1949         }
1950
1951         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1952                                               duration, cookie);
1953 }
1954
1955 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1956                                                  u64 cookie)
1957 {
1958         int ret;
1959
1960         lockdep_assert_held(&local->mtx);
1961
1962         if (local->hw_roc_cookie != cookie)
1963                 return -ENOENT;
1964
1965         ret = drv_cancel_remain_on_channel(local);
1966         if (ret)
1967                 return ret;
1968
1969         local->hw_roc_cookie = 0;
1970         local->hw_roc_channel = NULL;
1971
1972         ieee80211_recalc_idle(local);
1973
1974         return 0;
1975 }
1976
1977 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1978                                               struct net_device *dev,
1979                                               u64 cookie)
1980 {
1981         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982         struct ieee80211_local *local = sdata->local;
1983
1984         if (local->ops->cancel_remain_on_channel) {
1985                 int ret;
1986
1987                 mutex_lock(&local->mtx);
1988                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1989                 mutex_unlock(&local->mtx);
1990
1991                 return ret;
1992         }
1993
1994         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1995 }
1996
1997 static enum work_done_result
1998 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1999 {
2000         /*
2001          * Use the data embedded in the work struct for reporting
2002          * here so if the driver mangled the SKB before dropping
2003          * it (which is the only way we really should get here)
2004          * then we don't report mangled data.
2005          *
2006          * If there was no wait time, then by the time we get here
2007          * the driver will likely not have reported the status yet,
2008          * so in that case userspace will have to deal with it.
2009          */
2010
2011         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2012                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2013                                         (unsigned long) wk->offchan_tx.frame,
2014                                         wk->data, wk->data_len, false, GFP_KERNEL);
2015
2016         return WORK_DONE_DESTROY;
2017 }
2018
2019 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2020                              struct ieee80211_channel *chan, bool offchan,
2021                              enum nl80211_channel_type channel_type,
2022                              bool channel_type_valid, unsigned int wait,
2023                              const u8 *buf, size_t len, bool no_cck,
2024                              bool dont_wait_for_ack, u64 *cookie)
2025 {
2026         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2027         struct ieee80211_local *local = sdata->local;
2028         struct sk_buff *skb;
2029         struct sta_info *sta;
2030         struct ieee80211_work *wk;
2031         const struct ieee80211_mgmt *mgmt = (void *)buf;
2032         u32 flags;
2033         bool is_offchan = false;
2034
2035         if (dont_wait_for_ack)
2036                 flags = IEEE80211_TX_CTL_NO_ACK;
2037         else
2038                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2039                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2040
2041         /* Check that we are on the requested channel for transmission */
2042         if (chan != local->tmp_channel &&
2043             chan != local->oper_channel)
2044                 is_offchan = true;
2045         if (channel_type_valid &&
2046             (channel_type != local->tmp_channel_type &&
2047              channel_type != local->_oper_channel_type))
2048                 is_offchan = true;
2049
2050         if (chan == local->hw_roc_channel) {
2051                 /* TODO: check channel type? */
2052                 is_offchan = false;
2053                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2054         }
2055
2056         if (no_cck)
2057                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2058
2059         if (is_offchan && !offchan)
2060                 return -EBUSY;
2061
2062         switch (sdata->vif.type) {
2063         case NL80211_IFTYPE_ADHOC:
2064         case NL80211_IFTYPE_AP:
2065         case NL80211_IFTYPE_AP_VLAN:
2066         case NL80211_IFTYPE_P2P_GO:
2067         case NL80211_IFTYPE_MESH_POINT:
2068                 if (!ieee80211_is_action(mgmt->frame_control) ||
2069                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2070                         break;
2071                 rcu_read_lock();
2072                 sta = sta_info_get(sdata, mgmt->da);
2073                 rcu_read_unlock();
2074                 if (!sta)
2075                         return -ENOLINK;
2076                 break;
2077         case NL80211_IFTYPE_STATION:
2078         case NL80211_IFTYPE_P2P_CLIENT:
2079                 break;
2080         default:
2081                 return -EOPNOTSUPP;
2082         }
2083
2084         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2085         if (!skb)
2086                 return -ENOMEM;
2087         skb_reserve(skb, local->hw.extra_tx_headroom);
2088
2089         memcpy(skb_put(skb, len), buf, len);
2090
2091         IEEE80211_SKB_CB(skb)->flags = flags;
2092
2093         skb->dev = sdata->dev;
2094
2095         *cookie = (unsigned long) skb;
2096
2097         if (is_offchan && local->ops->remain_on_channel) {
2098                 unsigned int duration;
2099                 int ret;
2100
2101                 mutex_lock(&local->mtx);
2102                 /*
2103                  * If the duration is zero, then the driver
2104                  * wouldn't actually do anything. Set it to
2105                  * 100 for now.
2106                  *
2107                  * TODO: cancel the off-channel operation
2108                  *       when we get the SKB's TX status and
2109                  *       the wait time was zero before.
2110                  */
2111                 duration = 100;
2112                 if (wait)
2113                         duration = wait;
2114                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2115                                                      channel_type,
2116                                                      duration, cookie);
2117                 if (ret) {
2118                         kfree_skb(skb);
2119                         mutex_unlock(&local->mtx);
2120                         return ret;
2121                 }
2122
2123                 local->hw_roc_for_tx = true;
2124                 local->hw_roc_duration = wait;
2125
2126                 /*
2127                  * queue up frame for transmission after
2128                  * ieee80211_ready_on_channel call
2129                  */
2130
2131                 /* modify cookie to prevent API mismatches */
2132                 *cookie ^= 2;
2133                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2134                 local->hw_roc_skb = skb;
2135                 local->hw_roc_skb_for_status = skb;
2136                 mutex_unlock(&local->mtx);
2137
2138                 return 0;
2139         }
2140
2141         /*
2142          * Can transmit right away if the channel was the
2143          * right one and there's no wait involved... If a
2144          * wait is involved, we might otherwise not be on
2145          * the right channel for long enough!
2146          */
2147         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2148                 ieee80211_tx_skb(sdata, skb);
2149                 return 0;
2150         }
2151
2152         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2153         if (!wk) {
2154                 kfree_skb(skb);
2155                 return -ENOMEM;
2156         }
2157
2158         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2159         wk->chan = chan;
2160         wk->chan_type = channel_type;
2161         wk->sdata = sdata;
2162         wk->done = ieee80211_offchan_tx_done;
2163         wk->offchan_tx.frame = skb;
2164         wk->offchan_tx.wait = wait;
2165         wk->data_len = len;
2166         memcpy(wk->data, buf, len);
2167
2168         ieee80211_add_work(wk);
2169         return 0;
2170 }
2171
2172 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2173                                          struct net_device *dev,
2174                                          u64 cookie)
2175 {
2176         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2177         struct ieee80211_local *local = sdata->local;
2178         struct ieee80211_work *wk;
2179         int ret = -ENOENT;
2180
2181         mutex_lock(&local->mtx);
2182
2183         if (local->ops->cancel_remain_on_channel) {
2184                 cookie ^= 2;
2185                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2186
2187                 if (ret == 0) {
2188                         kfree_skb(local->hw_roc_skb);
2189                         local->hw_roc_skb = NULL;
2190                         local->hw_roc_skb_for_status = NULL;
2191                 }
2192
2193                 mutex_unlock(&local->mtx);
2194
2195                 return ret;
2196         }
2197
2198         list_for_each_entry(wk, &local->work_list, list) {
2199                 if (wk->sdata != sdata)
2200                         continue;
2201
2202                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2203                         continue;
2204
2205                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2206                         continue;
2207
2208                 wk->timeout = jiffies;
2209
2210                 ieee80211_queue_work(&local->hw, &local->work_work);
2211                 ret = 0;
2212                 break;
2213         }
2214         mutex_unlock(&local->mtx);
2215
2216         return ret;
2217 }
2218
2219 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2220                                           struct net_device *dev,
2221                                           u16 frame_type, bool reg)
2222 {
2223         struct ieee80211_local *local = wiphy_priv(wiphy);
2224
2225         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2226                 return;
2227
2228         if (reg)
2229                 local->probe_req_reg++;
2230         else
2231                 local->probe_req_reg--;
2232
2233         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2234 }
2235
2236 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2237 {
2238         struct ieee80211_local *local = wiphy_priv(wiphy);
2239
2240         if (local->started)
2241                 return -EOPNOTSUPP;
2242
2243         return drv_set_antenna(local, tx_ant, rx_ant);
2244 }
2245
2246 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2247 {
2248         struct ieee80211_local *local = wiphy_priv(wiphy);
2249
2250         return drv_get_antenna(local, tx_ant, rx_ant);
2251 }
2252
2253 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2254 {
2255         struct ieee80211_local *local = wiphy_priv(wiphy);
2256
2257         return drv_set_ringparam(local, tx, rx);
2258 }
2259
2260 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2261                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2262 {
2263         struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2266 }
2267
2268 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2269                                     struct net_device *dev,
2270                                     struct cfg80211_gtk_rekey_data *data)
2271 {
2272         struct ieee80211_local *local = wiphy_priv(wiphy);
2273         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2274
2275         if (!local->ops->set_rekey_data)
2276                 return -EOPNOTSUPP;
2277
2278         drv_set_rekey_data(local, sdata, data);
2279
2280         return 0;
2281 }
2282
2283 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2284 {
2285         u8 *pos = (void *)skb_put(skb, 7);
2286
2287         *pos++ = WLAN_EID_EXT_CAPABILITY;
2288         *pos++ = 5; /* len */
2289         *pos++ = 0x0;
2290         *pos++ = 0x0;
2291         *pos++ = 0x0;
2292         *pos++ = 0x0;
2293         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2294 }
2295
2296 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2297 {
2298         struct ieee80211_local *local = sdata->local;
2299         u16 capab;
2300
2301         capab = 0;
2302         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2303                 return capab;
2304
2305         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2306                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2307         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2308                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2309
2310         return capab;
2311 }
2312
2313 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2314                                        u8 *peer, u8 *bssid)
2315 {
2316         struct ieee80211_tdls_lnkie *lnkid;
2317
2318         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2319
2320         lnkid->ie_type = WLAN_EID_LINK_ID;
2321         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2322
2323         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2324         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2325         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2326 }
2327
2328 static int
2329 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2330                                u8 *peer, u8 action_code, u8 dialog_token,
2331                                u16 status_code, struct sk_buff *skb)
2332 {
2333         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2334         struct ieee80211_tdls_data *tf;
2335
2336         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2337
2338         memcpy(tf->da, peer, ETH_ALEN);
2339         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2340         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2341         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2342
2343         switch (action_code) {
2344         case WLAN_TDLS_SETUP_REQUEST:
2345                 tf->category = WLAN_CATEGORY_TDLS;
2346                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2347
2348                 skb_put(skb, sizeof(tf->u.setup_req));
2349                 tf->u.setup_req.dialog_token = dialog_token;
2350                 tf->u.setup_req.capability =
2351                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2352
2353                 ieee80211_add_srates_ie(&sdata->vif, skb);
2354                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2355                 ieee80211_tdls_add_ext_capab(skb);
2356                 break;
2357         case WLAN_TDLS_SETUP_RESPONSE:
2358                 tf->category = WLAN_CATEGORY_TDLS;
2359                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2360
2361                 skb_put(skb, sizeof(tf->u.setup_resp));
2362                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2363                 tf->u.setup_resp.dialog_token = dialog_token;
2364                 tf->u.setup_resp.capability =
2365                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2366
2367                 ieee80211_add_srates_ie(&sdata->vif, skb);
2368                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2369                 ieee80211_tdls_add_ext_capab(skb);
2370                 break;
2371         case WLAN_TDLS_SETUP_CONFIRM:
2372                 tf->category = WLAN_CATEGORY_TDLS;
2373                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2374
2375                 skb_put(skb, sizeof(tf->u.setup_cfm));
2376                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2377                 tf->u.setup_cfm.dialog_token = dialog_token;
2378                 break;
2379         case WLAN_TDLS_TEARDOWN:
2380                 tf->category = WLAN_CATEGORY_TDLS;
2381                 tf->action_code = WLAN_TDLS_TEARDOWN;
2382
2383                 skb_put(skb, sizeof(tf->u.teardown));
2384                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2385                 break;
2386         case WLAN_TDLS_DISCOVERY_REQUEST:
2387                 tf->category = WLAN_CATEGORY_TDLS;
2388                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2389
2390                 skb_put(skb, sizeof(tf->u.discover_req));
2391                 tf->u.discover_req.dialog_token = dialog_token;
2392                 break;
2393         default:
2394                 return -EINVAL;
2395         }
2396
2397         return 0;
2398 }
2399
2400 static int
2401 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2402                            u8 *peer, u8 action_code, u8 dialog_token,
2403                            u16 status_code, struct sk_buff *skb)
2404 {
2405         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2406         struct ieee80211_mgmt *mgmt;
2407
2408         mgmt = (void *)skb_put(skb, 24);
2409         memset(mgmt, 0, 24);
2410         memcpy(mgmt->da, peer, ETH_ALEN);
2411         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2412         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2413
2414         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2415                                           IEEE80211_STYPE_ACTION);
2416
2417         switch (action_code) {
2418         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2419                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2420                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2421                 mgmt->u.action.u.tdls_discover_resp.action_code =
2422                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2423                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2424                         dialog_token;
2425                 mgmt->u.action.u.tdls_discover_resp.capability =
2426                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2427
2428                 ieee80211_add_srates_ie(&sdata->vif, skb);
2429                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2430                 ieee80211_tdls_add_ext_capab(skb);
2431                 break;
2432         default:
2433                 return -EINVAL;
2434         }
2435
2436         return 0;
2437 }
2438
2439 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2440                                u8 *peer, u8 action_code, u8 dialog_token,
2441                                u16 status_code, const u8 *extra_ies,
2442                                size_t extra_ies_len)
2443 {
2444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2445         struct ieee80211_local *local = sdata->local;
2446         struct ieee80211_tx_info *info;
2447         struct sk_buff *skb = NULL;
2448         bool send_direct;
2449         int ret;
2450
2451         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2452                 return -ENOTSUPP;
2453
2454         /* make sure we are in managed mode, and associated */
2455         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2456             !sdata->u.mgd.associated)
2457                 return -EINVAL;
2458
2459 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2460         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2461 #endif
2462
2463         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2464                             max(sizeof(struct ieee80211_mgmt),
2465                                 sizeof(struct ieee80211_tdls_data)) +
2466                             50 + /* supported rates */
2467                             7 + /* ext capab */
2468                             extra_ies_len +
2469                             sizeof(struct ieee80211_tdls_lnkie));
2470         if (!skb)
2471                 return -ENOMEM;
2472
2473         info = IEEE80211_SKB_CB(skb);
2474         skb_reserve(skb, local->hw.extra_tx_headroom);
2475
2476         switch (action_code) {
2477         case WLAN_TDLS_SETUP_REQUEST:
2478         case WLAN_TDLS_SETUP_RESPONSE:
2479         case WLAN_TDLS_SETUP_CONFIRM:
2480         case WLAN_TDLS_TEARDOWN:
2481         case WLAN_TDLS_DISCOVERY_REQUEST:
2482                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2483                                                      action_code, dialog_token,
2484                                                      status_code, skb);
2485                 send_direct = false;
2486                 break;
2487         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2488                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2489                                                  dialog_token, status_code,
2490                                                  skb);
2491                 send_direct = true;
2492                 break;
2493         default:
2494                 ret = -ENOTSUPP;
2495                 break;
2496         }
2497
2498         if (ret < 0)
2499                 goto fail;
2500
2501         if (extra_ies_len)
2502                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2503
2504         /* the TDLS link IE is always added last */
2505         switch (action_code) {
2506         case WLAN_TDLS_SETUP_REQUEST:
2507         case WLAN_TDLS_SETUP_CONFIRM:
2508         case WLAN_TDLS_TEARDOWN:
2509         case WLAN_TDLS_DISCOVERY_REQUEST:
2510                 /* we are the initiator */
2511                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2512                                            sdata->u.mgd.bssid);
2513                 break;
2514         case WLAN_TDLS_SETUP_RESPONSE:
2515         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2516                 /* we are the responder */
2517                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2518                                            sdata->u.mgd.bssid);
2519                 break;
2520         default:
2521                 ret = -ENOTSUPP;
2522                 goto fail;
2523         }
2524
2525         if (send_direct) {
2526                 ieee80211_tx_skb(sdata, skb);
2527                 return 0;
2528         }
2529
2530         /*
2531          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2532          * we should default to AC_VI.
2533          */
2534         switch (action_code) {
2535         case WLAN_TDLS_SETUP_REQUEST:
2536         case WLAN_TDLS_SETUP_RESPONSE:
2537                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2538                 skb->priority = 2;
2539                 break;
2540         default:
2541                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2542                 skb->priority = 5;
2543                 break;
2544         }
2545
2546         /* disable bottom halves when entering the Tx path */
2547         local_bh_disable();
2548         ret = ieee80211_subif_start_xmit(skb, dev);
2549         local_bh_enable();
2550
2551         return ret;
2552
2553 fail:
2554         dev_kfree_skb(skb);
2555         return ret;
2556 }
2557
2558 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2559                                u8 *peer, enum nl80211_tdls_operation oper)
2560 {
2561         struct sta_info *sta;
2562         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2563
2564         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2565                 return -ENOTSUPP;
2566
2567         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2568                 return -EINVAL;
2569
2570 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2571         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2572 #endif
2573
2574         switch (oper) {
2575         case NL80211_TDLS_ENABLE_LINK:
2576                 rcu_read_lock();
2577                 sta = sta_info_get(sdata, peer);
2578                 if (!sta) {
2579                         rcu_read_unlock();
2580                         return -ENOLINK;
2581                 }
2582
2583                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2584                 rcu_read_unlock();
2585                 break;
2586         case NL80211_TDLS_DISABLE_LINK:
2587                 return sta_info_destroy_addr(sdata, peer);
2588         case NL80211_TDLS_TEARDOWN:
2589         case NL80211_TDLS_SETUP:
2590         case NL80211_TDLS_DISCOVERY_REQ:
2591                 /* We don't support in-driver setup/teardown/discovery */
2592                 return -ENOTSUPP;
2593         default:
2594                 return -ENOTSUPP;
2595         }
2596
2597         return 0;
2598 }
2599
2600 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2601                                   const u8 *peer, u64 *cookie)
2602 {
2603         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2604         struct ieee80211_local *local = sdata->local;
2605         struct ieee80211_qos_hdr *nullfunc;
2606         struct sk_buff *skb;
2607         int size = sizeof(*nullfunc);
2608         __le16 fc;
2609         bool qos;
2610         struct ieee80211_tx_info *info;
2611         struct sta_info *sta;
2612
2613         rcu_read_lock();
2614         sta = sta_info_get(sdata, peer);
2615         if (sta) {
2616                 qos = test_sta_flag(sta, WLAN_STA_WME);
2617                 rcu_read_unlock();
2618         } else {
2619                 rcu_read_unlock();
2620                 return -ENOLINK;
2621         }
2622
2623         if (qos) {
2624                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2625                                  IEEE80211_STYPE_QOS_NULLFUNC |
2626                                  IEEE80211_FCTL_FROMDS);
2627         } else {
2628                 size -= 2;
2629                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2630                                  IEEE80211_STYPE_NULLFUNC |
2631                                  IEEE80211_FCTL_FROMDS);
2632         }
2633
2634         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2635         if (!skb)
2636                 return -ENOMEM;
2637
2638         skb->dev = dev;
2639
2640         skb_reserve(skb, local->hw.extra_tx_headroom);
2641
2642         nullfunc = (void *) skb_put(skb, size);
2643         nullfunc->frame_control = fc;
2644         nullfunc->duration_id = 0;
2645         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2646         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2647         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2648         nullfunc->seq_ctrl = 0;
2649
2650         info = IEEE80211_SKB_CB(skb);
2651
2652         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2653                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2654
2655         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2656         skb->priority = 7;
2657         if (qos)
2658                 nullfunc->qos_ctrl = cpu_to_le16(7);
2659
2660         local_bh_disable();
2661         ieee80211_xmit(sdata, skb);
2662         local_bh_enable();
2663
2664         *cookie = (unsigned long) skb;
2665         return 0;
2666 }
2667
2668 static struct ieee80211_channel *
2669 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2670 {
2671         struct ieee80211_local *local = wiphy_priv(wiphy);
2672
2673         return local->oper_channel;
2674 }
2675
2676 struct cfg80211_ops mac80211_config_ops = {
2677         .add_virtual_intf = ieee80211_add_iface,
2678         .del_virtual_intf = ieee80211_del_iface,
2679         .change_virtual_intf = ieee80211_change_iface,
2680         .add_key = ieee80211_add_key,
2681         .del_key = ieee80211_del_key,
2682         .get_key = ieee80211_get_key,
2683         .set_default_key = ieee80211_config_default_key,
2684         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2685         .start_ap = ieee80211_start_ap,
2686         .change_beacon = ieee80211_change_beacon,
2687         .stop_ap = ieee80211_stop_ap,
2688         .add_station = ieee80211_add_station,
2689         .del_station = ieee80211_del_station,
2690         .change_station = ieee80211_change_station,
2691         .get_station = ieee80211_get_station,
2692         .dump_station = ieee80211_dump_station,
2693         .dump_survey = ieee80211_dump_survey,
2694 #ifdef CONFIG_MAC80211_MESH
2695         .add_mpath = ieee80211_add_mpath,
2696         .del_mpath = ieee80211_del_mpath,
2697         .change_mpath = ieee80211_change_mpath,
2698         .get_mpath = ieee80211_get_mpath,
2699         .dump_mpath = ieee80211_dump_mpath,
2700         .update_mesh_config = ieee80211_update_mesh_config,
2701         .get_mesh_config = ieee80211_get_mesh_config,
2702         .join_mesh = ieee80211_join_mesh,
2703         .leave_mesh = ieee80211_leave_mesh,
2704 #endif
2705         .change_bss = ieee80211_change_bss,
2706         .set_txq_params = ieee80211_set_txq_params,
2707         .set_channel = ieee80211_set_channel,
2708         .suspend = ieee80211_suspend,
2709         .resume = ieee80211_resume,
2710         .scan = ieee80211_scan,
2711         .sched_scan_start = ieee80211_sched_scan_start,
2712         .sched_scan_stop = ieee80211_sched_scan_stop,
2713         .auth = ieee80211_auth,
2714         .assoc = ieee80211_assoc,
2715         .deauth = ieee80211_deauth,
2716         .disassoc = ieee80211_disassoc,
2717         .join_ibss = ieee80211_join_ibss,
2718         .leave_ibss = ieee80211_leave_ibss,
2719         .set_wiphy_params = ieee80211_set_wiphy_params,
2720         .set_tx_power = ieee80211_set_tx_power,
2721         .get_tx_power = ieee80211_get_tx_power,
2722         .set_wds_peer = ieee80211_set_wds_peer,
2723         .rfkill_poll = ieee80211_rfkill_poll,
2724         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2725         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2726         .set_power_mgmt = ieee80211_set_power_mgmt,
2727         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2728         .remain_on_channel = ieee80211_remain_on_channel,
2729         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2730         .mgmt_tx = ieee80211_mgmt_tx,
2731         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2732         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2733         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2734         .set_antenna = ieee80211_set_antenna,
2735         .get_antenna = ieee80211_get_antenna,
2736         .set_ringparam = ieee80211_set_ringparam,
2737         .get_ringparam = ieee80211_get_ringparam,
2738         .set_rekey_data = ieee80211_set_rekey_data,
2739         .tdls_oper = ieee80211_tdls_oper,
2740         .tdls_mgmt = ieee80211_tdls_mgmt,
2741         .probe_client = ieee80211_probe_client,
2742         .get_channel = ieee80211_wiphy_get_channel,
2743         .set_noack_map = ieee80211_set_noack_map,
2744 };