mac80211: add P2P NoA settings
[pandora-kernel.git] / net / mac80211 / cfg.c
1 /*
2  * mac80211 configuration hooks for cfg80211
3  *
4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
5  *
6  * This file is GPLv2 as found in COPYING.
7  */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24                                                 const char *name,
25                                                 enum nl80211_iftype type,
26                                                 u32 *flags,
27                                                 struct vif_params *params)
28 {
29         struct ieee80211_local *local = wiphy_priv(wiphy);
30         struct wireless_dev *wdev;
31         struct ieee80211_sub_if_data *sdata;
32         int err;
33
34         err = ieee80211_if_add(local, name, &wdev, type, params);
35         if (err)
36                 return ERR_PTR(err);
37
38         if (type == NL80211_IFTYPE_MONITOR && flags) {
39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40                 sdata->u.mntr_flags = *flags;
41         }
42
43         return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50         return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54                                   struct net_device *dev,
55                                   enum nl80211_iftype type, u32 *flags,
56                                   struct vif_params *params)
57 {
58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59         int ret;
60
61         ret = ieee80211_if_change_type(sdata, type);
62         if (ret)
63                 return ret;
64
65         if (type == NL80211_IFTYPE_AP_VLAN &&
66             params && params->use_4addr == 0)
67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68         else if (type == NL80211_IFTYPE_STATION &&
69                  params && params->use_4addr >= 0)
70                 sdata->u.mgd.use_4addr = params->use_4addr;
71
72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73                 struct ieee80211_local *local = sdata->local;
74
75                 if (ieee80211_sdata_running(sdata)) {
76                         /*
77                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
78                          * changed while the interface is up.
79                          * Else we would need to add a lot of cruft
80                          * to update everything:
81                          *      cooked_mntrs, monitor and all fif_* counters
82                          *      reconfigure hardware
83                          */
84                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
85                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
86                                 return -EBUSY;
87
88                         ieee80211_adjust_monitor_flags(sdata, -1);
89                         sdata->u.mntr_flags = *flags;
90                         ieee80211_adjust_monitor_flags(sdata, 1);
91
92                         ieee80211_configure_filter(local);
93                 } else {
94                         /*
95                          * Because the interface is down, ieee80211_do_stop
96                          * and ieee80211_do_open take care of "everything"
97                          * mentioned in the comment above.
98                          */
99                         sdata->u.mntr_flags = *flags;
100                 }
101         }
102
103         return 0;
104 }
105
106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
107                                       struct wireless_dev *wdev)
108 {
109         return ieee80211_do_open(wdev, true);
110 }
111
112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
113                                       struct wireless_dev *wdev)
114 {
115         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
116 }
117
118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
119                                   struct net_device *dev,
120                                   u16 noack_map)
121 {
122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
123
124         sdata->noack_map = noack_map;
125         return 0;
126 }
127
128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
129                              u8 key_idx, bool pairwise, const u8 *mac_addr,
130                              struct key_params *params)
131 {
132         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
133         struct sta_info *sta = NULL;
134         struct ieee80211_key *key;
135         int err;
136
137         if (!ieee80211_sdata_running(sdata))
138                 return -ENETDOWN;
139
140         /* reject WEP and TKIP keys if WEP failed to initialize */
141         switch (params->cipher) {
142         case WLAN_CIPHER_SUITE_WEP40:
143         case WLAN_CIPHER_SUITE_TKIP:
144         case WLAN_CIPHER_SUITE_WEP104:
145                 if (IS_ERR(sdata->local->wep_tx_tfm))
146                         return -EINVAL;
147                 break;
148         default:
149                 break;
150         }
151
152         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
153                                   params->key, params->seq_len, params->seq);
154         if (IS_ERR(key))
155                 return PTR_ERR(key);
156
157         if (pairwise)
158                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
159
160         mutex_lock(&sdata->local->sta_mtx);
161
162         if (mac_addr) {
163                 if (ieee80211_vif_is_mesh(&sdata->vif))
164                         sta = sta_info_get(sdata, mac_addr);
165                 else
166                         sta = sta_info_get_bss(sdata, mac_addr);
167                 /*
168                  * The ASSOC test makes sure the driver is ready to
169                  * receive the key. When wpa_supplicant has roamed
170                  * using FT, it attempts to set the key before
171                  * association has completed, this rejects that attempt
172                  * so it will set the key again after assocation.
173                  *
174                  * TODO: accept the key if we have a station entry and
175                  *       add it to the device after the station.
176                  */
177                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
178                         ieee80211_key_free_unused(key);
179                         err = -ENOENT;
180                         goto out_unlock;
181                 }
182         }
183
184         switch (sdata->vif.type) {
185         case NL80211_IFTYPE_STATION:
186                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
187                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
188                 break;
189         case NL80211_IFTYPE_AP:
190         case NL80211_IFTYPE_AP_VLAN:
191                 /* Keys without a station are used for TX only */
192                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
193                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
194                 break;
195         case NL80211_IFTYPE_ADHOC:
196                 /* no MFP (yet) */
197                 break;
198         case NL80211_IFTYPE_MESH_POINT:
199 #ifdef CONFIG_MAC80211_MESH
200                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
201                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
202                 break;
203 #endif
204         case NL80211_IFTYPE_WDS:
205         case NL80211_IFTYPE_MONITOR:
206         case NL80211_IFTYPE_P2P_DEVICE:
207         case NL80211_IFTYPE_UNSPECIFIED:
208         case NUM_NL80211_IFTYPES:
209         case NL80211_IFTYPE_P2P_CLIENT:
210         case NL80211_IFTYPE_P2P_GO:
211                 /* shouldn't happen */
212                 WARN_ON_ONCE(1);
213                 break;
214         }
215
216         err = ieee80211_key_link(key, sdata, sta);
217
218  out_unlock:
219         mutex_unlock(&sdata->local->sta_mtx);
220
221         return err;
222 }
223
224 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
225                              u8 key_idx, bool pairwise, const u8 *mac_addr)
226 {
227         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
228         struct ieee80211_local *local = sdata->local;
229         struct sta_info *sta;
230         struct ieee80211_key *key = NULL;
231         int ret;
232
233         mutex_lock(&local->sta_mtx);
234         mutex_lock(&local->key_mtx);
235
236         if (mac_addr) {
237                 ret = -ENOENT;
238
239                 sta = sta_info_get_bss(sdata, mac_addr);
240                 if (!sta)
241                         goto out_unlock;
242
243                 if (pairwise)
244                         key = key_mtx_dereference(local, sta->ptk);
245                 else
246                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
247         } else
248                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
249
250         if (!key) {
251                 ret = -ENOENT;
252                 goto out_unlock;
253         }
254
255         ieee80211_key_free(key, true);
256
257         ret = 0;
258  out_unlock:
259         mutex_unlock(&local->key_mtx);
260         mutex_unlock(&local->sta_mtx);
261
262         return ret;
263 }
264
265 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
266                              u8 key_idx, bool pairwise, const u8 *mac_addr,
267                              void *cookie,
268                              void (*callback)(void *cookie,
269                                               struct key_params *params))
270 {
271         struct ieee80211_sub_if_data *sdata;
272         struct sta_info *sta = NULL;
273         u8 seq[6] = {0};
274         struct key_params params;
275         struct ieee80211_key *key = NULL;
276         u64 pn64;
277         u32 iv32;
278         u16 iv16;
279         int err = -ENOENT;
280
281         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
282
283         rcu_read_lock();
284
285         if (mac_addr) {
286                 sta = sta_info_get_bss(sdata, mac_addr);
287                 if (!sta)
288                         goto out;
289
290                 if (pairwise)
291                         key = rcu_dereference(sta->ptk);
292                 else if (key_idx < NUM_DEFAULT_KEYS)
293                         key = rcu_dereference(sta->gtk[key_idx]);
294         } else
295                 key = rcu_dereference(sdata->keys[key_idx]);
296
297         if (!key)
298                 goto out;
299
300         memset(&params, 0, sizeof(params));
301
302         params.cipher = key->conf.cipher;
303
304         switch (key->conf.cipher) {
305         case WLAN_CIPHER_SUITE_TKIP:
306                 iv32 = key->u.tkip.tx.iv32;
307                 iv16 = key->u.tkip.tx.iv16;
308
309                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
310                         drv_get_tkip_seq(sdata->local,
311                                          key->conf.hw_key_idx,
312                                          &iv32, &iv16);
313
314                 seq[0] = iv16 & 0xff;
315                 seq[1] = (iv16 >> 8) & 0xff;
316                 seq[2] = iv32 & 0xff;
317                 seq[3] = (iv32 >> 8) & 0xff;
318                 seq[4] = (iv32 >> 16) & 0xff;
319                 seq[5] = (iv32 >> 24) & 0xff;
320                 params.seq = seq;
321                 params.seq_len = 6;
322                 break;
323         case WLAN_CIPHER_SUITE_CCMP:
324                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
325                 seq[0] = pn64;
326                 seq[1] = pn64 >> 8;
327                 seq[2] = pn64 >> 16;
328                 seq[3] = pn64 >> 24;
329                 seq[4] = pn64 >> 32;
330                 seq[5] = pn64 >> 40;
331                 params.seq = seq;
332                 params.seq_len = 6;
333                 break;
334         case WLAN_CIPHER_SUITE_AES_CMAC:
335                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
336                 seq[0] = pn64;
337                 seq[1] = pn64 >> 8;
338                 seq[2] = pn64 >> 16;
339                 seq[3] = pn64 >> 24;
340                 seq[4] = pn64 >> 32;
341                 seq[5] = pn64 >> 40;
342                 params.seq = seq;
343                 params.seq_len = 6;
344                 break;
345         }
346
347         params.key = key->conf.key;
348         params.key_len = key->conf.keylen;
349
350         callback(cookie, &params);
351         err = 0;
352
353  out:
354         rcu_read_unlock();
355         return err;
356 }
357
358 static int ieee80211_config_default_key(struct wiphy *wiphy,
359                                         struct net_device *dev,
360                                         u8 key_idx, bool uni,
361                                         bool multi)
362 {
363         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
364
365         ieee80211_set_default_key(sdata, key_idx, uni, multi);
366
367         return 0;
368 }
369
370 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
371                                              struct net_device *dev,
372                                              u8 key_idx)
373 {
374         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
375
376         ieee80211_set_default_mgmt_key(sdata, key_idx);
377
378         return 0;
379 }
380
381 void sta_set_rate_info_tx(struct sta_info *sta,
382                           const struct ieee80211_tx_rate *rate,
383                           struct rate_info *rinfo)
384 {
385         rinfo->flags = 0;
386         if (rate->flags & IEEE80211_TX_RC_MCS) {
387                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
388                 rinfo->mcs = rate->idx;
389         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
390                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
391                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
392                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
393         } else {
394                 struct ieee80211_supported_band *sband;
395                 sband = sta->local->hw.wiphy->bands[
396                                 ieee80211_get_sdata_band(sta->sdata)];
397                 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
398         }
399         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
400                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
401         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
402                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
403         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
404                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
405         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
406                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
407 }
408
409 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
410 {
411         rinfo->flags = 0;
412
413         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
414                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
415                 rinfo->mcs = sta->last_rx_rate_idx;
416         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
417                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
418                 rinfo->nss = sta->last_rx_rate_vht_nss;
419                 rinfo->mcs = sta->last_rx_rate_idx;
420         } else {
421                 struct ieee80211_supported_band *sband;
422
423                 sband = sta->local->hw.wiphy->bands[
424                                 ieee80211_get_sdata_band(sta->sdata)];
425                 rinfo->legacy =
426                         sband->bitrates[sta->last_rx_rate_idx].bitrate;
427         }
428
429         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
430                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
431         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
432                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
433         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
434                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
435         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
436                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
437         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
438                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
439 }
440
441 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
442 {
443         struct ieee80211_sub_if_data *sdata = sta->sdata;
444         struct ieee80211_local *local = sdata->local;
445         struct timespec uptime;
446         u64 packets = 0;
447         int ac;
448
449         sinfo->generation = sdata->local->sta_generation;
450
451         sinfo->filled = STATION_INFO_INACTIVE_TIME |
452                         STATION_INFO_RX_BYTES64 |
453                         STATION_INFO_TX_BYTES64 |
454                         STATION_INFO_RX_PACKETS |
455                         STATION_INFO_TX_PACKETS |
456                         STATION_INFO_TX_RETRIES |
457                         STATION_INFO_TX_FAILED |
458                         STATION_INFO_TX_BITRATE |
459                         STATION_INFO_RX_BITRATE |
460                         STATION_INFO_RX_DROP_MISC |
461                         STATION_INFO_BSS_PARAM |
462                         STATION_INFO_CONNECTED_TIME |
463                         STATION_INFO_STA_FLAGS |
464                         STATION_INFO_BEACON_LOSS_COUNT;
465
466         do_posix_clock_monotonic_gettime(&uptime);
467         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
468
469         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
470         sinfo->tx_bytes = 0;
471         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
472                 sinfo->tx_bytes += sta->tx_bytes[ac];
473                 packets += sta->tx_packets[ac];
474         }
475         sinfo->tx_packets = packets;
476         sinfo->rx_bytes = sta->rx_bytes;
477         sinfo->rx_packets = sta->rx_packets;
478         sinfo->tx_retries = sta->tx_retry_count;
479         sinfo->tx_failed = sta->tx_retry_failed;
480         sinfo->rx_dropped_misc = sta->rx_dropped;
481         sinfo->beacon_loss_count = sta->beacon_loss_count;
482
483         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
484             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
485                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
486                 if (!local->ops->get_rssi ||
487                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
488                         sinfo->signal = (s8)sta->last_signal;
489                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
490         }
491
492         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
493         sta_set_rate_info_rx(sta, &sinfo->rxrate);
494
495         if (ieee80211_vif_is_mesh(&sdata->vif)) {
496 #ifdef CONFIG_MAC80211_MESH
497                 sinfo->filled |= STATION_INFO_LLID |
498                                  STATION_INFO_PLID |
499                                  STATION_INFO_PLINK_STATE |
500                                  STATION_INFO_LOCAL_PM |
501                                  STATION_INFO_PEER_PM |
502                                  STATION_INFO_NONPEER_PM;
503
504                 sinfo->llid = le16_to_cpu(sta->llid);
505                 sinfo->plid = le16_to_cpu(sta->plid);
506                 sinfo->plink_state = sta->plink_state;
507                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
508                         sinfo->filled |= STATION_INFO_T_OFFSET;
509                         sinfo->t_offset = sta->t_offset;
510                 }
511                 sinfo->local_pm = sta->local_pm;
512                 sinfo->peer_pm = sta->peer_pm;
513                 sinfo->nonpeer_pm = sta->nonpeer_pm;
514 #endif
515         }
516
517         sinfo->bss_param.flags = 0;
518         if (sdata->vif.bss_conf.use_cts_prot)
519                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
520         if (sdata->vif.bss_conf.use_short_preamble)
521                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
522         if (sdata->vif.bss_conf.use_short_slot)
523                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
524         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
525         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
526
527         sinfo->sta_flags.set = 0;
528         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
529                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
530                                 BIT(NL80211_STA_FLAG_WME) |
531                                 BIT(NL80211_STA_FLAG_MFP) |
532                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
533                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
534                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
535         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
536                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
537         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
538                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
539         if (test_sta_flag(sta, WLAN_STA_WME))
540                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
541         if (test_sta_flag(sta, WLAN_STA_MFP))
542                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
543         if (test_sta_flag(sta, WLAN_STA_AUTH))
544                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
545         if (test_sta_flag(sta, WLAN_STA_ASSOC))
546                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
547         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
548                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
549 }
550
551 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
552         "rx_packets", "rx_bytes", "wep_weak_iv_count",
553         "rx_duplicates", "rx_fragments", "rx_dropped",
554         "tx_packets", "tx_bytes", "tx_fragments",
555         "tx_filtered", "tx_retry_failed", "tx_retries",
556         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
557         "channel", "noise", "ch_time", "ch_time_busy",
558         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
559 };
560 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
561
562 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
563                                        struct net_device *dev,
564                                        int sset)
565 {
566         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
567         int rv = 0;
568
569         if (sset == ETH_SS_STATS)
570                 rv += STA_STATS_LEN;
571
572         rv += drv_get_et_sset_count(sdata, sset);
573
574         if (rv == 0)
575                 return -EOPNOTSUPP;
576         return rv;
577 }
578
579 static void ieee80211_get_et_stats(struct wiphy *wiphy,
580                                    struct net_device *dev,
581                                    struct ethtool_stats *stats,
582                                    u64 *data)
583 {
584         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
585         struct ieee80211_chanctx_conf *chanctx_conf;
586         struct ieee80211_channel *channel;
587         struct sta_info *sta;
588         struct ieee80211_local *local = sdata->local;
589         struct station_info sinfo;
590         struct survey_info survey;
591         int i, q;
592 #define STA_STATS_SURVEY_LEN 7
593
594         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
595
596 #define ADD_STA_STATS(sta)                              \
597         do {                                            \
598                 data[i++] += sta->rx_packets;           \
599                 data[i++] += sta->rx_bytes;             \
600                 data[i++] += sta->wep_weak_iv_count;    \
601                 data[i++] += sta->num_duplicates;       \
602                 data[i++] += sta->rx_fragments;         \
603                 data[i++] += sta->rx_dropped;           \
604                                                         \
605                 data[i++] += sinfo.tx_packets;          \
606                 data[i++] += sinfo.tx_bytes;            \
607                 data[i++] += sta->tx_fragments;         \
608                 data[i++] += sta->tx_filtered_count;    \
609                 data[i++] += sta->tx_retry_failed;      \
610                 data[i++] += sta->tx_retry_count;       \
611                 data[i++] += sta->beacon_loss_count;    \
612         } while (0)
613
614         /* For Managed stations, find the single station based on BSSID
615          * and use that.  For interface types, iterate through all available
616          * stations and add stats for any station that is assigned to this
617          * network device.
618          */
619
620         mutex_lock(&local->sta_mtx);
621
622         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
623                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
624
625                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
626                         goto do_survey;
627
628                 sinfo.filled = 0;
629                 sta_set_sinfo(sta, &sinfo);
630
631                 i = 0;
632                 ADD_STA_STATS(sta);
633
634                 data[i++] = sta->sta_state;
635
636
637                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
638                         data[i] = 100000 *
639                                 cfg80211_calculate_bitrate(&sinfo.txrate);
640                 i++;
641                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
642                         data[i] = 100000 *
643                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
644                 i++;
645
646                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
647                         data[i] = (u8)sinfo.signal_avg;
648                 i++;
649         } else {
650                 list_for_each_entry(sta, &local->sta_list, list) {
651                         /* Make sure this station belongs to the proper dev */
652                         if (sta->sdata->dev != dev)
653                                 continue;
654
655                         i = 0;
656                         ADD_STA_STATS(sta);
657                 }
658         }
659
660 do_survey:
661         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
662         /* Get survey stats for current channel */
663         survey.filled = 0;
664
665         rcu_read_lock();
666         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
667         if (chanctx_conf)
668                 channel = chanctx_conf->def.chan;
669         else
670                 channel = NULL;
671         rcu_read_unlock();
672
673         if (channel) {
674                 q = 0;
675                 do {
676                         survey.filled = 0;
677                         if (drv_get_survey(local, q, &survey) != 0) {
678                                 survey.filled = 0;
679                                 break;
680                         }
681                         q++;
682                 } while (channel != survey.channel);
683         }
684
685         if (survey.filled)
686                 data[i++] = survey.channel->center_freq;
687         else
688                 data[i++] = 0;
689         if (survey.filled & SURVEY_INFO_NOISE_DBM)
690                 data[i++] = (u8)survey.noise;
691         else
692                 data[i++] = -1LL;
693         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
694                 data[i++] = survey.channel_time;
695         else
696                 data[i++] = -1LL;
697         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
698                 data[i++] = survey.channel_time_busy;
699         else
700                 data[i++] = -1LL;
701         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
702                 data[i++] = survey.channel_time_ext_busy;
703         else
704                 data[i++] = -1LL;
705         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
706                 data[i++] = survey.channel_time_rx;
707         else
708                 data[i++] = -1LL;
709         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
710                 data[i++] = survey.channel_time_tx;
711         else
712                 data[i++] = -1LL;
713
714         mutex_unlock(&local->sta_mtx);
715
716         if (WARN_ON(i != STA_STATS_LEN))
717                 return;
718
719         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
720 }
721
722 static void ieee80211_get_et_strings(struct wiphy *wiphy,
723                                      struct net_device *dev,
724                                      u32 sset, u8 *data)
725 {
726         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
727         int sz_sta_stats = 0;
728
729         if (sset == ETH_SS_STATS) {
730                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
731                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
732         }
733         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
734 }
735
736 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
737                                  int idx, u8 *mac, struct station_info *sinfo)
738 {
739         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
740         struct ieee80211_local *local = sdata->local;
741         struct sta_info *sta;
742         int ret = -ENOENT;
743
744         mutex_lock(&local->sta_mtx);
745
746         sta = sta_info_get_by_idx(sdata, idx);
747         if (sta) {
748                 ret = 0;
749                 memcpy(mac, sta->sta.addr, ETH_ALEN);
750                 sta_set_sinfo(sta, sinfo);
751         }
752
753         mutex_unlock(&local->sta_mtx);
754
755         return ret;
756 }
757
758 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
759                                  int idx, struct survey_info *survey)
760 {
761         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
762
763         return drv_get_survey(local, idx, survey);
764 }
765
766 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
767                                  u8 *mac, struct station_info *sinfo)
768 {
769         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
770         struct ieee80211_local *local = sdata->local;
771         struct sta_info *sta;
772         int ret = -ENOENT;
773
774         mutex_lock(&local->sta_mtx);
775
776         sta = sta_info_get_bss(sdata, mac);
777         if (sta) {
778                 ret = 0;
779                 sta_set_sinfo(sta, sinfo);
780         }
781
782         mutex_unlock(&local->sta_mtx);
783
784         return ret;
785 }
786
787 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
788                                          struct cfg80211_chan_def *chandef)
789 {
790         struct ieee80211_local *local = wiphy_priv(wiphy);
791         struct ieee80211_sub_if_data *sdata;
792         int ret = 0;
793
794         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
795                 return 0;
796
797         mutex_lock(&local->iflist_mtx);
798         if (local->use_chanctx) {
799                 sdata = rcu_dereference_protected(
800                                 local->monitor_sdata,
801                                 lockdep_is_held(&local->iflist_mtx));
802                 if (sdata) {
803                         ieee80211_vif_release_channel(sdata);
804                         ret = ieee80211_vif_use_channel(sdata, chandef,
805                                         IEEE80211_CHANCTX_EXCLUSIVE);
806                 }
807         } else if (local->open_count == local->monitors) {
808                 local->_oper_channel = chandef->chan;
809                 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
810                 ieee80211_hw_config(local, 0);
811         }
812
813         if (ret == 0)
814                 local->monitor_chandef = *chandef;
815         mutex_unlock(&local->iflist_mtx);
816
817         return ret;
818 }
819
820 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
821                                     const u8 *resp, size_t resp_len)
822 {
823         struct probe_resp *new, *old;
824
825         if (!resp || !resp_len)
826                 return 1;
827
828         old = rtnl_dereference(sdata->u.ap.probe_resp);
829
830         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
831         if (!new)
832                 return -ENOMEM;
833
834         new->len = resp_len;
835         memcpy(new->data, resp, resp_len);
836
837         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
838         if (old)
839                 kfree_rcu(old, rcu_head);
840
841         return 0;
842 }
843
844 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
845                                    struct cfg80211_beacon_data *params)
846 {
847         struct beacon_data *new, *old;
848         int new_head_len, new_tail_len;
849         int size, err;
850         u32 changed = BSS_CHANGED_BEACON;
851
852         old = rtnl_dereference(sdata->u.ap.beacon);
853
854         /* Need to have a beacon head if we don't have one yet */
855         if (!params->head && !old)
856                 return -EINVAL;
857
858         /* new or old head? */
859         if (params->head)
860                 new_head_len = params->head_len;
861         else
862                 new_head_len = old->head_len;
863
864         /* new or old tail? */
865         if (params->tail || !old)
866                 /* params->tail_len will be zero for !params->tail */
867                 new_tail_len = params->tail_len;
868         else
869                 new_tail_len = old->tail_len;
870
871         size = sizeof(*new) + new_head_len + new_tail_len;
872
873         new = kzalloc(size, GFP_KERNEL);
874         if (!new)
875                 return -ENOMEM;
876
877         /* start filling the new info now */
878
879         /*
880          * pointers go into the block we allocated,
881          * memory is | beacon_data | head | tail |
882          */
883         new->head = ((u8 *) new) + sizeof(*new);
884         new->tail = new->head + new_head_len;
885         new->head_len = new_head_len;
886         new->tail_len = new_tail_len;
887
888         /* copy in head */
889         if (params->head)
890                 memcpy(new->head, params->head, new_head_len);
891         else
892                 memcpy(new->head, old->head, new_head_len);
893
894         /* copy in optional tail */
895         if (params->tail)
896                 memcpy(new->tail, params->tail, new_tail_len);
897         else
898                 if (old)
899                         memcpy(new->tail, old->tail, new_tail_len);
900
901         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
902                                        params->probe_resp_len);
903         if (err < 0)
904                 return err;
905         if (err == 0)
906                 changed |= BSS_CHANGED_AP_PROBE_RESP;
907
908         rcu_assign_pointer(sdata->u.ap.beacon, new);
909
910         if (old)
911                 kfree_rcu(old, rcu_head);
912
913         return changed;
914 }
915
916 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
917                               struct cfg80211_ap_settings *params)
918 {
919         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
920         struct beacon_data *old;
921         struct ieee80211_sub_if_data *vlan;
922         u32 changed = BSS_CHANGED_BEACON_INT |
923                       BSS_CHANGED_BEACON_ENABLED |
924                       BSS_CHANGED_BEACON |
925                       BSS_CHANGED_SSID |
926                       BSS_CHANGED_P2P_PS;
927         int err;
928
929         old = rtnl_dereference(sdata->u.ap.beacon);
930         if (old)
931                 return -EALREADY;
932
933         /* TODO: make hostapd tell us what it wants */
934         sdata->smps_mode = IEEE80211_SMPS_OFF;
935         sdata->needed_rx_chains = sdata->local->rx_chains;
936         sdata->radar_required = params->radar_required;
937
938         err = ieee80211_vif_use_channel(sdata, &params->chandef,
939                                         IEEE80211_CHANCTX_SHARED);
940         if (err)
941                 return err;
942         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
943
944         /*
945          * Apply control port protocol, this allows us to
946          * not encrypt dynamic WEP control frames.
947          */
948         sdata->control_port_protocol = params->crypto.control_port_ethertype;
949         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
950         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
951                 vlan->control_port_protocol =
952                         params->crypto.control_port_ethertype;
953                 vlan->control_port_no_encrypt =
954                         params->crypto.control_port_no_encrypt;
955         }
956
957         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
958         sdata->vif.bss_conf.dtim_period = params->dtim_period;
959         sdata->vif.bss_conf.enable_beacon = true;
960
961         sdata->vif.bss_conf.ssid_len = params->ssid_len;
962         if (params->ssid_len)
963                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
964                        params->ssid_len);
965         sdata->vif.bss_conf.hidden_ssid =
966                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
967
968         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
969                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
970         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
971                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
972         if (params->p2p_opp_ps)
973                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
974                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
975
976         err = ieee80211_assign_beacon(sdata, &params->beacon);
977         if (err < 0)
978                 return err;
979         changed |= err;
980
981         err = drv_start_ap(sdata->local, sdata);
982         if (err) {
983                 old = rtnl_dereference(sdata->u.ap.beacon);
984                 if (old)
985                         kfree_rcu(old, rcu_head);
986                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
987                 return err;
988         }
989
990         ieee80211_bss_info_change_notify(sdata, changed);
991
992         netif_carrier_on(dev);
993         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
994                 netif_carrier_on(vlan->dev);
995
996         return 0;
997 }
998
999 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1000                                    struct cfg80211_beacon_data *params)
1001 {
1002         struct ieee80211_sub_if_data *sdata;
1003         struct beacon_data *old;
1004         int err;
1005
1006         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1007
1008         old = rtnl_dereference(sdata->u.ap.beacon);
1009         if (!old)
1010                 return -ENOENT;
1011
1012         err = ieee80211_assign_beacon(sdata, params);
1013         if (err < 0)
1014                 return err;
1015         ieee80211_bss_info_change_notify(sdata, err);
1016         return 0;
1017 }
1018
1019 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1020 {
1021         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1022         struct ieee80211_sub_if_data *vlan;
1023         struct ieee80211_local *local = sdata->local;
1024         struct beacon_data *old_beacon;
1025         struct probe_resp *old_probe_resp;
1026
1027         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1028         if (!old_beacon)
1029                 return -ENOENT;
1030         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1031
1032         /* turn off carrier for this interface and dependent VLANs */
1033         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1034                 netif_carrier_off(vlan->dev);
1035         netif_carrier_off(dev);
1036
1037         /* remove beacon and probe response */
1038         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1039         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1040         kfree_rcu(old_beacon, rcu_head);
1041         if (old_probe_resp)
1042                 kfree_rcu(old_probe_resp, rcu_head);
1043
1044         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1045                 sta_info_flush_defer(vlan);
1046         sta_info_flush_defer(sdata);
1047         rcu_barrier();
1048         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1049                 sta_info_flush_cleanup(vlan);
1050                 ieee80211_free_keys(vlan);
1051         }
1052         sta_info_flush_cleanup(sdata);
1053         ieee80211_free_keys(sdata);
1054
1055         sdata->vif.bss_conf.enable_beacon = false;
1056         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1057         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1058
1059         drv_stop_ap(sdata->local, sdata);
1060
1061         /* free all potentially still buffered bcast frames */
1062         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1063         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1064
1065         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1066         ieee80211_vif_release_channel(sdata);
1067
1068         return 0;
1069 }
1070
1071 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1072 struct iapp_layer2_update {
1073         u8 da[ETH_ALEN];        /* broadcast */
1074         u8 sa[ETH_ALEN];        /* STA addr */
1075         __be16 len;             /* 6 */
1076         u8 dsap;                /* 0 */
1077         u8 ssap;                /* 0 */
1078         u8 control;
1079         u8 xid_info[3];
1080 } __packed;
1081
1082 static void ieee80211_send_layer2_update(struct sta_info *sta)
1083 {
1084         struct iapp_layer2_update *msg;
1085         struct sk_buff *skb;
1086
1087         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1088          * bridge devices */
1089
1090         skb = dev_alloc_skb(sizeof(*msg));
1091         if (!skb)
1092                 return;
1093         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1094
1095         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1096          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1097
1098         eth_broadcast_addr(msg->da);
1099         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1100         msg->len = htons(6);
1101         msg->dsap = 0;
1102         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1103         msg->control = 0xaf;    /* XID response lsb.1111F101.
1104                                  * F=0 (no poll command; unsolicited frame) */
1105         msg->xid_info[0] = 0x81;        /* XID format identifier */
1106         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1107         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1108
1109         skb->dev = sta->sdata->dev;
1110         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1111         memset(skb->cb, 0, sizeof(skb->cb));
1112         netif_rx_ni(skb);
1113 }
1114
1115 static int sta_apply_auth_flags(struct ieee80211_local *local,
1116                                 struct sta_info *sta,
1117                                 u32 mask, u32 set)
1118 {
1119         int ret;
1120
1121         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1122             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1123             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1124                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1125                 if (ret)
1126                         return ret;
1127         }
1128
1129         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1130             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1131             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1132                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1133                 if (ret)
1134                         return ret;
1135         }
1136
1137         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1138                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1139                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1140                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1141                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1142                 else
1143                         ret = 0;
1144                 if (ret)
1145                         return ret;
1146         }
1147
1148         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1149             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1150             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1151                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1152                 if (ret)
1153                         return ret;
1154         }
1155
1156         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1157             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1158             test_sta_flag(sta, WLAN_STA_AUTH)) {
1159                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1160                 if (ret)
1161                         return ret;
1162         }
1163
1164         return 0;
1165 }
1166
1167 static int sta_apply_parameters(struct ieee80211_local *local,
1168                                 struct sta_info *sta,
1169                                 struct station_parameters *params)
1170 {
1171         int ret = 0;
1172         u32 rates;
1173         int i, j;
1174         struct ieee80211_supported_band *sband;
1175         struct ieee80211_sub_if_data *sdata = sta->sdata;
1176         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1177         u32 mask, set;
1178
1179         sband = local->hw.wiphy->bands[band];
1180
1181         mask = params->sta_flags_mask;
1182         set = params->sta_flags_set;
1183
1184         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1185                 /*
1186                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1187                  * API but must follow AUTHENTICATED for driver state.
1188                  */
1189                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1190                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1191                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1192                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1193         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1194                 /*
1195                  * TDLS -- everything follows authorized, but
1196                  * only becoming authorized is possible, not
1197                  * going back
1198                  */
1199                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1200                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1201                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1202                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1203                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1204                 }
1205         }
1206
1207         ret = sta_apply_auth_flags(local, sta, mask, set);
1208         if (ret)
1209                 return ret;
1210
1211         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1212                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1213                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1214                 else
1215                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1216         }
1217
1218         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1219                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1220                         set_sta_flag(sta, WLAN_STA_WME);
1221                         sta->sta.wme = true;
1222                 } else {
1223                         clear_sta_flag(sta, WLAN_STA_WME);
1224                         sta->sta.wme = false;
1225                 }
1226         }
1227
1228         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1229                 if (set & BIT(NL80211_STA_FLAG_MFP))
1230                         set_sta_flag(sta, WLAN_STA_MFP);
1231                 else
1232                         clear_sta_flag(sta, WLAN_STA_MFP);
1233         }
1234
1235         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1236                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1237                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1238                 else
1239                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1240         }
1241
1242         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1243                 sta->sta.uapsd_queues = params->uapsd_queues;
1244                 sta->sta.max_sp = params->max_sp;
1245         }
1246
1247         /*
1248          * cfg80211 validates this (1-2007) and allows setting the AID
1249          * only when creating a new station entry
1250          */
1251         if (params->aid)
1252                 sta->sta.aid = params->aid;
1253
1254         /*
1255          * Some of the following updates would be racy if called on an
1256          * existing station, via ieee80211_change_station(). However,
1257          * all such changes are rejected by cfg80211 except for updates
1258          * changing the supported rates on an existing but not yet used
1259          * TDLS peer.
1260          */
1261
1262         if (params->listen_interval >= 0)
1263                 sta->listen_interval = params->listen_interval;
1264
1265         if (params->supported_rates) {
1266                 rates = 0;
1267
1268                 for (i = 0; i < params->supported_rates_len; i++) {
1269                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1270                         for (j = 0; j < sband->n_bitrates; j++) {
1271                                 if (sband->bitrates[j].bitrate == rate)
1272                                         rates |= BIT(j);
1273                         }
1274                 }
1275                 sta->sta.supp_rates[band] = rates;
1276         }
1277
1278         if (params->ht_capa)
1279                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1280                                                   params->ht_capa, sta);
1281
1282         if (params->vht_capa)
1283                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1284                                                     params->vht_capa, sta);
1285
1286         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1287 #ifdef CONFIG_MAC80211_MESH
1288                 u32 changed = 0;
1289
1290                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1291                         switch (params->plink_state) {
1292                         case NL80211_PLINK_ESTAB:
1293                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1294                                         changed = mesh_plink_inc_estab_count(
1295                                                         sdata);
1296                                 sta->plink_state = params->plink_state;
1297
1298                                 ieee80211_mps_sta_status_update(sta);
1299                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1300                                               sdata->u.mesh.mshcfg.power_mode);
1301                                 break;
1302                         case NL80211_PLINK_LISTEN:
1303                         case NL80211_PLINK_BLOCKED:
1304                         case NL80211_PLINK_OPN_SNT:
1305                         case NL80211_PLINK_OPN_RCVD:
1306                         case NL80211_PLINK_CNF_RCVD:
1307                         case NL80211_PLINK_HOLDING:
1308                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1309                                         changed = mesh_plink_dec_estab_count(
1310                                                         sdata);
1311                                 sta->plink_state = params->plink_state;
1312
1313                                 ieee80211_mps_sta_status_update(sta);
1314                                 changed |=
1315                                       ieee80211_mps_local_status_update(sdata);
1316                                 break;
1317                         default:
1318                                 /*  nothing  */
1319                                 break;
1320                         }
1321                 }
1322
1323                 switch (params->plink_action) {
1324                 case NL80211_PLINK_ACTION_NO_ACTION:
1325                         /* nothing */
1326                         break;
1327                 case NL80211_PLINK_ACTION_OPEN:
1328                         changed |= mesh_plink_open(sta);
1329                         break;
1330                 case NL80211_PLINK_ACTION_BLOCK:
1331                         changed |= mesh_plink_block(sta);
1332                         break;
1333                 }
1334
1335                 if (params->local_pm)
1336                         changed |=
1337                               ieee80211_mps_set_sta_local_pm(sta,
1338                                                              params->local_pm);
1339                 ieee80211_bss_info_change_notify(sdata, changed);
1340 #endif
1341         }
1342
1343         return 0;
1344 }
1345
1346 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1347                                  u8 *mac, struct station_parameters *params)
1348 {
1349         struct ieee80211_local *local = wiphy_priv(wiphy);
1350         struct sta_info *sta;
1351         struct ieee80211_sub_if_data *sdata;
1352         int err;
1353         int layer2_update;
1354
1355         if (params->vlan) {
1356                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1357
1358                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1359                     sdata->vif.type != NL80211_IFTYPE_AP)
1360                         return -EINVAL;
1361         } else
1362                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1363
1364         if (ether_addr_equal(mac, sdata->vif.addr))
1365                 return -EINVAL;
1366
1367         if (is_multicast_ether_addr(mac))
1368                 return -EINVAL;
1369
1370         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1371         if (!sta)
1372                 return -ENOMEM;
1373
1374         /*
1375          * defaults -- if userspace wants something else we'll
1376          * change it accordingly in sta_apply_parameters()
1377          */
1378         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1379                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1380                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1381         }
1382
1383         err = sta_apply_parameters(local, sta, params);
1384         if (err) {
1385                 sta_info_free(local, sta);
1386                 return err;
1387         }
1388
1389         /*
1390          * for TDLS, rate control should be initialized only when
1391          * rates are known and station is marked authorized
1392          */
1393         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1394                 rate_control_rate_init(sta);
1395
1396         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1397                 sdata->vif.type == NL80211_IFTYPE_AP;
1398
1399         err = sta_info_insert_rcu(sta);
1400         if (err) {
1401                 rcu_read_unlock();
1402                 return err;
1403         }
1404
1405         if (layer2_update)
1406                 ieee80211_send_layer2_update(sta);
1407
1408         rcu_read_unlock();
1409
1410         return 0;
1411 }
1412
1413 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1414                                  u8 *mac)
1415 {
1416         struct ieee80211_sub_if_data *sdata;
1417
1418         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1419
1420         if (mac)
1421                 return sta_info_destroy_addr_bss(sdata, mac);
1422
1423         sta_info_flush(sdata);
1424         return 0;
1425 }
1426
1427 static int ieee80211_change_station(struct wiphy *wiphy,
1428                                     struct net_device *dev, u8 *mac,
1429                                     struct station_parameters *params)
1430 {
1431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1432         struct ieee80211_local *local = wiphy_priv(wiphy);
1433         struct sta_info *sta;
1434         struct ieee80211_sub_if_data *vlansdata;
1435         enum cfg80211_station_type statype;
1436         int err;
1437
1438         mutex_lock(&local->sta_mtx);
1439
1440         sta = sta_info_get_bss(sdata, mac);
1441         if (!sta) {
1442                 err = -ENOENT;
1443                 goto out_err;
1444         }
1445
1446         switch (sdata->vif.type) {
1447         case NL80211_IFTYPE_MESH_POINT:
1448                 if (sdata->u.mesh.user_mpm)
1449                         statype = CFG80211_STA_MESH_PEER_USER;
1450                 else
1451                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1452                 break;
1453         case NL80211_IFTYPE_ADHOC:
1454                 statype = CFG80211_STA_IBSS;
1455                 break;
1456         case NL80211_IFTYPE_STATION:
1457                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1458                         statype = CFG80211_STA_AP_STA;
1459                         break;
1460                 }
1461                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1462                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1463                 else
1464                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1465                 break;
1466         case NL80211_IFTYPE_AP:
1467         case NL80211_IFTYPE_AP_VLAN:
1468                 statype = CFG80211_STA_AP_CLIENT;
1469                 break;
1470         default:
1471                 err = -EOPNOTSUPP;
1472                 goto out_err;
1473         }
1474
1475         err = cfg80211_check_station_change(wiphy, params, statype);
1476         if (err)
1477                 goto out_err;
1478
1479         if (params->vlan && params->vlan != sta->sdata->dev) {
1480                 bool prev_4addr = false;
1481                 bool new_4addr = false;
1482
1483                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1484
1485                 if (params->vlan->ieee80211_ptr->use_4addr) {
1486                         if (vlansdata->u.vlan.sta) {
1487                                 err = -EBUSY;
1488                                 goto out_err;
1489                         }
1490
1491                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1492                         new_4addr = true;
1493                 }
1494
1495                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1496                     sta->sdata->u.vlan.sta) {
1497                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1498                         prev_4addr = true;
1499                 }
1500
1501                 sta->sdata = vlansdata;
1502
1503                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1504                     prev_4addr != new_4addr) {
1505                         if (new_4addr)
1506                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1507                         else
1508                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1509                 }
1510
1511                 ieee80211_send_layer2_update(sta);
1512         }
1513
1514         err = sta_apply_parameters(local, sta, params);
1515         if (err)
1516                 goto out_err;
1517
1518         /* When peer becomes authorized, init rate control as well */
1519         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1520             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1521                 rate_control_rate_init(sta);
1522
1523         mutex_unlock(&local->sta_mtx);
1524
1525         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1526             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1527                 ieee80211_recalc_ps(local, -1);
1528                 ieee80211_recalc_ps_vif(sdata);
1529         }
1530
1531         return 0;
1532 out_err:
1533         mutex_unlock(&local->sta_mtx);
1534         return err;
1535 }
1536
1537 #ifdef CONFIG_MAC80211_MESH
1538 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1539                                  u8 *dst, u8 *next_hop)
1540 {
1541         struct ieee80211_sub_if_data *sdata;
1542         struct mesh_path *mpath;
1543         struct sta_info *sta;
1544         int err;
1545
1546         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1547
1548         rcu_read_lock();
1549         sta = sta_info_get(sdata, next_hop);
1550         if (!sta) {
1551                 rcu_read_unlock();
1552                 return -ENOENT;
1553         }
1554
1555         err = mesh_path_add(sdata, dst);
1556         if (err) {
1557                 rcu_read_unlock();
1558                 return err;
1559         }
1560
1561         mpath = mesh_path_lookup(sdata, dst);
1562         if (!mpath) {
1563                 rcu_read_unlock();
1564                 return -ENXIO;
1565         }
1566         mesh_path_fix_nexthop(mpath, sta);
1567
1568         rcu_read_unlock();
1569         return 0;
1570 }
1571
1572 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1573                                u8 *dst)
1574 {
1575         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1576
1577         if (dst)
1578                 return mesh_path_del(sdata, dst);
1579
1580         mesh_path_flush_by_iface(sdata);
1581         return 0;
1582 }
1583
1584 static int ieee80211_change_mpath(struct wiphy *wiphy,
1585                                     struct net_device *dev,
1586                                     u8 *dst, u8 *next_hop)
1587 {
1588         struct ieee80211_sub_if_data *sdata;
1589         struct mesh_path *mpath;
1590         struct sta_info *sta;
1591
1592         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1593
1594         rcu_read_lock();
1595
1596         sta = sta_info_get(sdata, next_hop);
1597         if (!sta) {
1598                 rcu_read_unlock();
1599                 return -ENOENT;
1600         }
1601
1602         mpath = mesh_path_lookup(sdata, dst);
1603         if (!mpath) {
1604                 rcu_read_unlock();
1605                 return -ENOENT;
1606         }
1607
1608         mesh_path_fix_nexthop(mpath, sta);
1609
1610         rcu_read_unlock();
1611         return 0;
1612 }
1613
1614 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1615                             struct mpath_info *pinfo)
1616 {
1617         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1618
1619         if (next_hop_sta)
1620                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1621         else
1622                 memset(next_hop, 0, ETH_ALEN);
1623
1624         memset(pinfo, 0, sizeof(*pinfo));
1625
1626         pinfo->generation = mesh_paths_generation;
1627
1628         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1629                         MPATH_INFO_SN |
1630                         MPATH_INFO_METRIC |
1631                         MPATH_INFO_EXPTIME |
1632                         MPATH_INFO_DISCOVERY_TIMEOUT |
1633                         MPATH_INFO_DISCOVERY_RETRIES |
1634                         MPATH_INFO_FLAGS;
1635
1636         pinfo->frame_qlen = mpath->frame_queue.qlen;
1637         pinfo->sn = mpath->sn;
1638         pinfo->metric = mpath->metric;
1639         if (time_before(jiffies, mpath->exp_time))
1640                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1641         pinfo->discovery_timeout =
1642                         jiffies_to_msecs(mpath->discovery_timeout);
1643         pinfo->discovery_retries = mpath->discovery_retries;
1644         if (mpath->flags & MESH_PATH_ACTIVE)
1645                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1646         if (mpath->flags & MESH_PATH_RESOLVING)
1647                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1648         if (mpath->flags & MESH_PATH_SN_VALID)
1649                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1650         if (mpath->flags & MESH_PATH_FIXED)
1651                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1652         if (mpath->flags & MESH_PATH_RESOLVED)
1653                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1654 }
1655
1656 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1657                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1658
1659 {
1660         struct ieee80211_sub_if_data *sdata;
1661         struct mesh_path *mpath;
1662
1663         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1664
1665         rcu_read_lock();
1666         mpath = mesh_path_lookup(sdata, dst);
1667         if (!mpath) {
1668                 rcu_read_unlock();
1669                 return -ENOENT;
1670         }
1671         memcpy(dst, mpath->dst, ETH_ALEN);
1672         mpath_set_pinfo(mpath, next_hop, pinfo);
1673         rcu_read_unlock();
1674         return 0;
1675 }
1676
1677 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1678                                  int idx, u8 *dst, u8 *next_hop,
1679                                  struct mpath_info *pinfo)
1680 {
1681         struct ieee80211_sub_if_data *sdata;
1682         struct mesh_path *mpath;
1683
1684         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1685
1686         rcu_read_lock();
1687         mpath = mesh_path_lookup_by_idx(sdata, idx);
1688         if (!mpath) {
1689                 rcu_read_unlock();
1690                 return -ENOENT;
1691         }
1692         memcpy(dst, mpath->dst, ETH_ALEN);
1693         mpath_set_pinfo(mpath, next_hop, pinfo);
1694         rcu_read_unlock();
1695         return 0;
1696 }
1697
1698 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1699                                 struct net_device *dev,
1700                                 struct mesh_config *conf)
1701 {
1702         struct ieee80211_sub_if_data *sdata;
1703         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1704
1705         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1706         return 0;
1707 }
1708
1709 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1710 {
1711         return (mask >> (parm-1)) & 0x1;
1712 }
1713
1714 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1715                 const struct mesh_setup *setup)
1716 {
1717         u8 *new_ie;
1718         const u8 *old_ie;
1719         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1720                                         struct ieee80211_sub_if_data, u.mesh);
1721
1722         /* allocate information elements */
1723         new_ie = NULL;
1724         old_ie = ifmsh->ie;
1725
1726         if (setup->ie_len) {
1727                 new_ie = kmemdup(setup->ie, setup->ie_len,
1728                                 GFP_KERNEL);
1729                 if (!new_ie)
1730                         return -ENOMEM;
1731         }
1732         ifmsh->ie_len = setup->ie_len;
1733         ifmsh->ie = new_ie;
1734         kfree(old_ie);
1735
1736         /* now copy the rest of the setup parameters */
1737         ifmsh->mesh_id_len = setup->mesh_id_len;
1738         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1739         ifmsh->mesh_sp_id = setup->sync_method;
1740         ifmsh->mesh_pp_id = setup->path_sel_proto;
1741         ifmsh->mesh_pm_id = setup->path_metric;
1742         ifmsh->user_mpm = setup->user_mpm;
1743         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1744         if (setup->is_authenticated)
1745                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1746         if (setup->is_secure)
1747                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1748
1749         /* mcast rate setting in Mesh Node */
1750         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1751                                                 sizeof(setup->mcast_rate));
1752
1753         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1754         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1755
1756         return 0;
1757 }
1758
1759 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1760                                         struct net_device *dev, u32 mask,
1761                                         const struct mesh_config *nconf)
1762 {
1763         struct mesh_config *conf;
1764         struct ieee80211_sub_if_data *sdata;
1765         struct ieee80211_if_mesh *ifmsh;
1766
1767         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1768         ifmsh = &sdata->u.mesh;
1769
1770         /* Set the config options which we are interested in setting */
1771         conf = &(sdata->u.mesh.mshcfg);
1772         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1773                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1774         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1775                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1776         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1777                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1778         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1779                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1780         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1781                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1782         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1783                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1784         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1785                 conf->element_ttl = nconf->element_ttl;
1786         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1787                 if (ifmsh->user_mpm)
1788                         return -EBUSY;
1789                 conf->auto_open_plinks = nconf->auto_open_plinks;
1790         }
1791         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1792                 conf->dot11MeshNbrOffsetMaxNeighbor =
1793                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1794         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1795                 conf->dot11MeshHWMPmaxPREQretries =
1796                         nconf->dot11MeshHWMPmaxPREQretries;
1797         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1798                 conf->path_refresh_time = nconf->path_refresh_time;
1799         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1800                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1801         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1802                 conf->dot11MeshHWMPactivePathTimeout =
1803                         nconf->dot11MeshHWMPactivePathTimeout;
1804         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1805                 conf->dot11MeshHWMPpreqMinInterval =
1806                         nconf->dot11MeshHWMPpreqMinInterval;
1807         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1808                 conf->dot11MeshHWMPperrMinInterval =
1809                         nconf->dot11MeshHWMPperrMinInterval;
1810         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1811                            mask))
1812                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1813                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1814         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1815                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1816                 ieee80211_mesh_root_setup(ifmsh);
1817         }
1818         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1819                 /* our current gate announcement implementation rides on root
1820                  * announcements, so require this ifmsh to also be a root node
1821                  * */
1822                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1823                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1824                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1825                         ieee80211_mesh_root_setup(ifmsh);
1826                 }
1827                 conf->dot11MeshGateAnnouncementProtocol =
1828                         nconf->dot11MeshGateAnnouncementProtocol;
1829         }
1830         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1831                 conf->dot11MeshHWMPRannInterval =
1832                         nconf->dot11MeshHWMPRannInterval;
1833         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1834                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1835         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1836                 /* our RSSI threshold implementation is supported only for
1837                  * devices that report signal in dBm.
1838                  */
1839                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1840                         return -ENOTSUPP;
1841                 conf->rssi_threshold = nconf->rssi_threshold;
1842         }
1843         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1844                 conf->ht_opmode = nconf->ht_opmode;
1845                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1846                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1847         }
1848         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1849                 conf->dot11MeshHWMPactivePathToRootTimeout =
1850                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1851         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1852                 conf->dot11MeshHWMProotInterval =
1853                         nconf->dot11MeshHWMProotInterval;
1854         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1855                 conf->dot11MeshHWMPconfirmationInterval =
1856                         nconf->dot11MeshHWMPconfirmationInterval;
1857         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1858                 conf->power_mode = nconf->power_mode;
1859                 ieee80211_mps_local_status_update(sdata);
1860         }
1861         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1862                 conf->dot11MeshAwakeWindowDuration =
1863                         nconf->dot11MeshAwakeWindowDuration;
1864         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1865         return 0;
1866 }
1867
1868 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1869                                const struct mesh_config *conf,
1870                                const struct mesh_setup *setup)
1871 {
1872         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1873         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1874         int err;
1875
1876         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1877         err = copy_mesh_setup(ifmsh, setup);
1878         if (err)
1879                 return err;
1880
1881         /* can mesh use other SMPS modes? */
1882         sdata->smps_mode = IEEE80211_SMPS_OFF;
1883         sdata->needed_rx_chains = sdata->local->rx_chains;
1884
1885         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1886                                         IEEE80211_CHANCTX_SHARED);
1887         if (err)
1888                 return err;
1889
1890         return ieee80211_start_mesh(sdata);
1891 }
1892
1893 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1894 {
1895         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1896
1897         ieee80211_stop_mesh(sdata);
1898         ieee80211_vif_release_channel(sdata);
1899
1900         return 0;
1901 }
1902 #endif
1903
1904 static int ieee80211_change_bss(struct wiphy *wiphy,
1905                                 struct net_device *dev,
1906                                 struct bss_parameters *params)
1907 {
1908         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1909         enum ieee80211_band band;
1910         u32 changed = 0;
1911
1912         if (!rtnl_dereference(sdata->u.ap.beacon))
1913                 return -ENOENT;
1914
1915         band = ieee80211_get_sdata_band(sdata);
1916
1917         if (params->use_cts_prot >= 0) {
1918                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1919                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1920         }
1921         if (params->use_short_preamble >= 0) {
1922                 sdata->vif.bss_conf.use_short_preamble =
1923                         params->use_short_preamble;
1924                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1925         }
1926
1927         if (!sdata->vif.bss_conf.use_short_slot &&
1928             band == IEEE80211_BAND_5GHZ) {
1929                 sdata->vif.bss_conf.use_short_slot = true;
1930                 changed |= BSS_CHANGED_ERP_SLOT;
1931         }
1932
1933         if (params->use_short_slot_time >= 0) {
1934                 sdata->vif.bss_conf.use_short_slot =
1935                         params->use_short_slot_time;
1936                 changed |= BSS_CHANGED_ERP_SLOT;
1937         }
1938
1939         if (params->basic_rates) {
1940                 int i, j;
1941                 u32 rates = 0;
1942                 struct ieee80211_supported_band *sband = wiphy->bands[band];
1943
1944                 for (i = 0; i < params->basic_rates_len; i++) {
1945                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1946                         for (j = 0; j < sband->n_bitrates; j++) {
1947                                 if (sband->bitrates[j].bitrate == rate)
1948                                         rates |= BIT(j);
1949                         }
1950                 }
1951                 sdata->vif.bss_conf.basic_rates = rates;
1952                 changed |= BSS_CHANGED_BASIC_RATES;
1953         }
1954
1955         if (params->ap_isolate >= 0) {
1956                 if (params->ap_isolate)
1957                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1958                 else
1959                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1960         }
1961
1962         if (params->ht_opmode >= 0) {
1963                 sdata->vif.bss_conf.ht_operation_mode =
1964                         (u16) params->ht_opmode;
1965                 changed |= BSS_CHANGED_HT;
1966         }
1967
1968         if (params->p2p_ctwindow >= 0) {
1969                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1970                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1971                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1972                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1973                 changed |= BSS_CHANGED_P2P_PS;
1974         }
1975
1976         if (params->p2p_opp_ps > 0) {
1977                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1978                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1979                 changed |= BSS_CHANGED_P2P_PS;
1980         } else if (params->p2p_opp_ps == 0) {
1981                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1982                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1983                 changed |= BSS_CHANGED_P2P_PS;
1984         }
1985
1986         ieee80211_bss_info_change_notify(sdata, changed);
1987
1988         return 0;
1989 }
1990
1991 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1992                                     struct net_device *dev,
1993                                     struct ieee80211_txq_params *params)
1994 {
1995         struct ieee80211_local *local = wiphy_priv(wiphy);
1996         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1997         struct ieee80211_tx_queue_params p;
1998
1999         if (!local->ops->conf_tx)
2000                 return -EOPNOTSUPP;
2001
2002         if (local->hw.queues < IEEE80211_NUM_ACS)
2003                 return -EOPNOTSUPP;
2004
2005         memset(&p, 0, sizeof(p));
2006         p.aifs = params->aifs;
2007         p.cw_max = params->cwmax;
2008         p.cw_min = params->cwmin;
2009         p.txop = params->txop;
2010
2011         /*
2012          * Setting tx queue params disables u-apsd because it's only
2013          * called in master mode.
2014          */
2015         p.uapsd = false;
2016
2017         sdata->tx_conf[params->ac] = p;
2018         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2019                 wiphy_debug(local->hw.wiphy,
2020                             "failed to set TX queue parameters for AC %d\n",
2021                             params->ac);
2022                 return -EINVAL;
2023         }
2024
2025         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2026
2027         return 0;
2028 }
2029
2030 #ifdef CONFIG_PM
2031 static int ieee80211_suspend(struct wiphy *wiphy,
2032                              struct cfg80211_wowlan *wowlan)
2033 {
2034         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2035 }
2036
2037 static int ieee80211_resume(struct wiphy *wiphy)
2038 {
2039         return __ieee80211_resume(wiphy_priv(wiphy));
2040 }
2041 #else
2042 #define ieee80211_suspend NULL
2043 #define ieee80211_resume NULL
2044 #endif
2045
2046 static int ieee80211_scan(struct wiphy *wiphy,
2047                           struct cfg80211_scan_request *req)
2048 {
2049         struct ieee80211_sub_if_data *sdata;
2050
2051         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2052
2053         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2054         case NL80211_IFTYPE_STATION:
2055         case NL80211_IFTYPE_ADHOC:
2056         case NL80211_IFTYPE_MESH_POINT:
2057         case NL80211_IFTYPE_P2P_CLIENT:
2058         case NL80211_IFTYPE_P2P_DEVICE:
2059                 break;
2060         case NL80211_IFTYPE_P2P_GO:
2061                 if (sdata->local->ops->hw_scan)
2062                         break;
2063                 /*
2064                  * FIXME: implement NoA while scanning in software,
2065                  * for now fall through to allow scanning only when
2066                  * beaconing hasn't been configured yet
2067                  */
2068         case NL80211_IFTYPE_AP:
2069                 /*
2070                  * If the scan has been forced (and the driver supports
2071                  * forcing), don't care about being beaconing already.
2072                  * This will create problems to the attached stations (e.g. all
2073                  * the  frames sent while scanning on other channel will be
2074                  * lost)
2075                  */
2076                 if (sdata->u.ap.beacon &&
2077                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2078                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2079                         return -EOPNOTSUPP;
2080                 break;
2081         default:
2082                 return -EOPNOTSUPP;
2083         }
2084
2085         return ieee80211_request_scan(sdata, req);
2086 }
2087
2088 static int
2089 ieee80211_sched_scan_start(struct wiphy *wiphy,
2090                            struct net_device *dev,
2091                            struct cfg80211_sched_scan_request *req)
2092 {
2093         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2094
2095         if (!sdata->local->ops->sched_scan_start)
2096                 return -EOPNOTSUPP;
2097
2098         return ieee80211_request_sched_scan_start(sdata, req);
2099 }
2100
2101 static int
2102 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2103 {
2104         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2105
2106         if (!sdata->local->ops->sched_scan_stop)
2107                 return -EOPNOTSUPP;
2108
2109         return ieee80211_request_sched_scan_stop(sdata);
2110 }
2111
2112 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2113                           struct cfg80211_auth_request *req)
2114 {
2115         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2116 }
2117
2118 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2119                            struct cfg80211_assoc_request *req)
2120 {
2121         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2122 }
2123
2124 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2125                             struct cfg80211_deauth_request *req)
2126 {
2127         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2128 }
2129
2130 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2131                               struct cfg80211_disassoc_request *req)
2132 {
2133         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2134 }
2135
2136 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2137                                struct cfg80211_ibss_params *params)
2138 {
2139         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2140 }
2141
2142 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2143 {
2144         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2145 }
2146
2147 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2148                                     int rate[IEEE80211_NUM_BANDS])
2149 {
2150         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2151
2152         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2153                sizeof(int) * IEEE80211_NUM_BANDS);
2154
2155         return 0;
2156 }
2157
2158 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2159 {
2160         struct ieee80211_local *local = wiphy_priv(wiphy);
2161         int err;
2162
2163         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2164                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2165
2166                 if (err)
2167                         return err;
2168         }
2169
2170         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2171                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2172
2173                 if (err)
2174                         return err;
2175         }
2176
2177         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2178                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2179
2180                 if (err)
2181                         return err;
2182         }
2183
2184         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2185                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2186                         return -EINVAL;
2187                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2188         }
2189         if (changed & WIPHY_PARAM_RETRY_LONG) {
2190                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2191                         return -EINVAL;
2192                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2193         }
2194         if (changed &
2195             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2196                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2197
2198         return 0;
2199 }
2200
2201 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2202                                   struct wireless_dev *wdev,
2203                                   enum nl80211_tx_power_setting type, int mbm)
2204 {
2205         struct ieee80211_local *local = wiphy_priv(wiphy);
2206         struct ieee80211_sub_if_data *sdata;
2207
2208         if (wdev) {
2209                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2210
2211                 switch (type) {
2212                 case NL80211_TX_POWER_AUTOMATIC:
2213                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2214                         break;
2215                 case NL80211_TX_POWER_LIMITED:
2216                 case NL80211_TX_POWER_FIXED:
2217                         if (mbm < 0 || (mbm % 100))
2218                                 return -EOPNOTSUPP;
2219                         sdata->user_power_level = MBM_TO_DBM(mbm);
2220                         break;
2221                 }
2222
2223                 ieee80211_recalc_txpower(sdata);
2224
2225                 return 0;
2226         }
2227
2228         switch (type) {
2229         case NL80211_TX_POWER_AUTOMATIC:
2230                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2231                 break;
2232         case NL80211_TX_POWER_LIMITED:
2233         case NL80211_TX_POWER_FIXED:
2234                 if (mbm < 0 || (mbm % 100))
2235                         return -EOPNOTSUPP;
2236                 local->user_power_level = MBM_TO_DBM(mbm);
2237                 break;
2238         }
2239
2240         mutex_lock(&local->iflist_mtx);
2241         list_for_each_entry(sdata, &local->interfaces, list)
2242                 sdata->user_power_level = local->user_power_level;
2243         list_for_each_entry(sdata, &local->interfaces, list)
2244                 ieee80211_recalc_txpower(sdata);
2245         mutex_unlock(&local->iflist_mtx);
2246
2247         return 0;
2248 }
2249
2250 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2251                                   struct wireless_dev *wdev,
2252                                   int *dbm)
2253 {
2254         struct ieee80211_local *local = wiphy_priv(wiphy);
2255         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2256
2257         if (!local->use_chanctx)
2258                 *dbm = local->hw.conf.power_level;
2259         else
2260                 *dbm = sdata->vif.bss_conf.txpower;
2261
2262         return 0;
2263 }
2264
2265 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2266                                   const u8 *addr)
2267 {
2268         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2269
2270         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2271
2272         return 0;
2273 }
2274
2275 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2276 {
2277         struct ieee80211_local *local = wiphy_priv(wiphy);
2278
2279         drv_rfkill_poll(local);
2280 }
2281
2282 #ifdef CONFIG_NL80211_TESTMODE
2283 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2284 {
2285         struct ieee80211_local *local = wiphy_priv(wiphy);
2286
2287         if (!local->ops->testmode_cmd)
2288                 return -EOPNOTSUPP;
2289
2290         return local->ops->testmode_cmd(&local->hw, data, len);
2291 }
2292
2293 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2294                                    struct sk_buff *skb,
2295                                    struct netlink_callback *cb,
2296                                    void *data, int len)
2297 {
2298         struct ieee80211_local *local = wiphy_priv(wiphy);
2299
2300         if (!local->ops->testmode_dump)
2301                 return -EOPNOTSUPP;
2302
2303         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2304 }
2305 #endif
2306
2307 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2308                              enum ieee80211_smps_mode smps_mode)
2309 {
2310         const u8 *ap;
2311         enum ieee80211_smps_mode old_req;
2312         int err;
2313
2314         lockdep_assert_held(&sdata->u.mgd.mtx);
2315
2316         old_req = sdata->u.mgd.req_smps;
2317         sdata->u.mgd.req_smps = smps_mode;
2318
2319         if (old_req == smps_mode &&
2320             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2321                 return 0;
2322
2323         /*
2324          * If not associated, or current association is not an HT
2325          * association, there's no need to do anything, just store
2326          * the new value until we associate.
2327          */
2328         if (!sdata->u.mgd.associated ||
2329             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2330                 return 0;
2331
2332         ap = sdata->u.mgd.associated->bssid;
2333
2334         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2335                 if (sdata->u.mgd.powersave)
2336                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2337                 else
2338                         smps_mode = IEEE80211_SMPS_OFF;
2339         }
2340
2341         /* send SM PS frame to AP */
2342         err = ieee80211_send_smps_action(sdata, smps_mode,
2343                                          ap, ap);
2344         if (err)
2345                 sdata->u.mgd.req_smps = old_req;
2346
2347         return err;
2348 }
2349
2350 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2351                                     bool enabled, int timeout)
2352 {
2353         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2354         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2355
2356         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2357             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2358                 return -EOPNOTSUPP;
2359
2360         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2361                 return -EOPNOTSUPP;
2362
2363         if (enabled == sdata->u.mgd.powersave &&
2364             timeout == local->dynamic_ps_forced_timeout)
2365                 return 0;
2366
2367         sdata->u.mgd.powersave = enabled;
2368         local->dynamic_ps_forced_timeout = timeout;
2369
2370         /* no change, but if automatic follow powersave */
2371         mutex_lock(&sdata->u.mgd.mtx);
2372         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2373         mutex_unlock(&sdata->u.mgd.mtx);
2374
2375         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2376                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2377
2378         ieee80211_recalc_ps(local, -1);
2379         ieee80211_recalc_ps_vif(sdata);
2380
2381         return 0;
2382 }
2383
2384 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2385                                          struct net_device *dev,
2386                                          s32 rssi_thold, u32 rssi_hyst)
2387 {
2388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2389         struct ieee80211_vif *vif = &sdata->vif;
2390         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2391
2392         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2393             rssi_hyst == bss_conf->cqm_rssi_hyst)
2394                 return 0;
2395
2396         bss_conf->cqm_rssi_thold = rssi_thold;
2397         bss_conf->cqm_rssi_hyst = rssi_hyst;
2398
2399         /* tell the driver upon association, unless already associated */
2400         if (sdata->u.mgd.associated &&
2401             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2402                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2403
2404         return 0;
2405 }
2406
2407 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2408                                       struct net_device *dev,
2409                                       const u8 *addr,
2410                                       const struct cfg80211_bitrate_mask *mask)
2411 {
2412         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2413         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2414         int i, ret;
2415
2416         if (!ieee80211_sdata_running(sdata))
2417                 return -ENETDOWN;
2418
2419         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2420                 ret = drv_set_bitrate_mask(local, sdata, mask);
2421                 if (ret)
2422                         return ret;
2423         }
2424
2425         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2426                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2427                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2428                        sizeof(mask->control[i].mcs));
2429         }
2430
2431         return 0;
2432 }
2433
2434 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2435                                     struct ieee80211_sub_if_data *sdata,
2436                                     struct ieee80211_channel *channel,
2437                                     unsigned int duration, u64 *cookie,
2438                                     struct sk_buff *txskb,
2439                                     enum ieee80211_roc_type type)
2440 {
2441         struct ieee80211_roc_work *roc, *tmp;
2442         bool queued = false;
2443         int ret;
2444
2445         lockdep_assert_held(&local->mtx);
2446
2447         if (local->use_chanctx && !local->ops->remain_on_channel)
2448                 return -EOPNOTSUPP;
2449
2450         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2451         if (!roc)
2452                 return -ENOMEM;
2453
2454         roc->chan = channel;
2455         roc->duration = duration;
2456         roc->req_duration = duration;
2457         roc->frame = txskb;
2458         roc->type = type;
2459         roc->mgmt_tx_cookie = (unsigned long)txskb;
2460         roc->sdata = sdata;
2461         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2462         INIT_LIST_HEAD(&roc->dependents);
2463
2464         /* if there's one pending or we're scanning, queue this one */
2465         if (!list_empty(&local->roc_list) ||
2466             local->scanning || local->radar_detect_enabled)
2467                 goto out_check_combine;
2468
2469         /* if not HW assist, just queue & schedule work */
2470         if (!local->ops->remain_on_channel) {
2471                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2472                 goto out_queue;
2473         }
2474
2475         /* otherwise actually kick it off here (for error handling) */
2476
2477         /*
2478          * If the duration is zero, then the driver
2479          * wouldn't actually do anything. Set it to
2480          * 10 for now.
2481          *
2482          * TODO: cancel the off-channel operation
2483          *       when we get the SKB's TX status and
2484          *       the wait time was zero before.
2485          */
2486         if (!duration)
2487                 duration = 10;
2488
2489         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2490         if (ret) {
2491                 kfree(roc);
2492                 return ret;
2493         }
2494
2495         roc->started = true;
2496         goto out_queue;
2497
2498  out_check_combine:
2499         list_for_each_entry(tmp, &local->roc_list, list) {
2500                 if (tmp->chan != channel || tmp->sdata != sdata)
2501                         continue;
2502
2503                 /*
2504                  * Extend this ROC if possible:
2505                  *
2506                  * If it hasn't started yet, just increase the duration
2507                  * and add the new one to the list of dependents.
2508                  * If the type of the new ROC has higher priority, modify the
2509                  * type of the previous one to match that of the new one.
2510                  */
2511                 if (!tmp->started) {
2512                         list_add_tail(&roc->list, &tmp->dependents);
2513                         tmp->duration = max(tmp->duration, roc->duration);
2514                         tmp->type = max(tmp->type, roc->type);
2515                         queued = true;
2516                         break;
2517                 }
2518
2519                 /* If it has already started, it's more difficult ... */
2520                 if (local->ops->remain_on_channel) {
2521                         unsigned long j = jiffies;
2522
2523                         /*
2524                          * In the offloaded ROC case, if it hasn't begun, add
2525                          * this new one to the dependent list to be handled
2526                          * when the master one begins. If it has begun,
2527                          * check that there's still a minimum time left and
2528                          * if so, start this one, transmitting the frame, but
2529                          * add it to the list directly after this one with
2530                          * a reduced time so we'll ask the driver to execute
2531                          * it right after finishing the previous one, in the
2532                          * hope that it'll also be executed right afterwards,
2533                          * effectively extending the old one.
2534                          * If there's no minimum time left, just add it to the
2535                          * normal list.
2536                          * TODO: the ROC type is ignored here, assuming that it
2537                          * is better to immediately use the current ROC.
2538                          */
2539                         if (!tmp->hw_begun) {
2540                                 list_add_tail(&roc->list, &tmp->dependents);
2541                                 queued = true;
2542                                 break;
2543                         }
2544
2545                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2546                                         tmp->hw_start_time +
2547                                         msecs_to_jiffies(tmp->duration))) {
2548                                 int new_dur;
2549
2550                                 ieee80211_handle_roc_started(roc);
2551
2552                                 new_dur = roc->duration -
2553                                           jiffies_to_msecs(tmp->hw_start_time +
2554                                                            msecs_to_jiffies(
2555                                                                 tmp->duration) -
2556                                                            j);
2557
2558                                 if (new_dur > 0) {
2559                                         /* add right after tmp */
2560                                         list_add(&roc->list, &tmp->list);
2561                                 } else {
2562                                         list_add_tail(&roc->list,
2563                                                       &tmp->dependents);
2564                                 }
2565                                 queued = true;
2566                         }
2567                 } else if (del_timer_sync(&tmp->work.timer)) {
2568                         unsigned long new_end;
2569
2570                         /*
2571                          * In the software ROC case, cancel the timer, if
2572                          * that fails then the finish work is already
2573                          * queued/pending and thus we queue the new ROC
2574                          * normally, if that succeeds then we can extend
2575                          * the timer duration and TX the frame (if any.)
2576                          */
2577
2578                         list_add_tail(&roc->list, &tmp->dependents);
2579                         queued = true;
2580
2581                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2582
2583                         /* ok, it was started & we canceled timer */
2584                         if (time_after(new_end, tmp->work.timer.expires))
2585                                 mod_timer(&tmp->work.timer, new_end);
2586                         else
2587                                 add_timer(&tmp->work.timer);
2588
2589                         ieee80211_handle_roc_started(roc);
2590                 }
2591                 break;
2592         }
2593
2594  out_queue:
2595         if (!queued)
2596                 list_add_tail(&roc->list, &local->roc_list);
2597
2598         /*
2599          * cookie is either the roc cookie (for normal roc)
2600          * or the SKB (for mgmt TX)
2601          */
2602         if (!txskb) {
2603                 /* local->mtx protects this */
2604                 local->roc_cookie_counter++;
2605                 roc->cookie = local->roc_cookie_counter;
2606                 /* wow, you wrapped 64 bits ... more likely a bug */
2607                 if (WARN_ON(roc->cookie == 0)) {
2608                         roc->cookie = 1;
2609                         local->roc_cookie_counter++;
2610                 }
2611                 *cookie = roc->cookie;
2612         } else {
2613                 *cookie = (unsigned long)txskb;
2614         }
2615
2616         return 0;
2617 }
2618
2619 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2620                                        struct wireless_dev *wdev,
2621                                        struct ieee80211_channel *chan,
2622                                        unsigned int duration,
2623                                        u64 *cookie)
2624 {
2625         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2626         struct ieee80211_local *local = sdata->local;
2627         int ret;
2628
2629         mutex_lock(&local->mtx);
2630         ret = ieee80211_start_roc_work(local, sdata, chan,
2631                                        duration, cookie, NULL,
2632                                        IEEE80211_ROC_TYPE_NORMAL);
2633         mutex_unlock(&local->mtx);
2634
2635         return ret;
2636 }
2637
2638 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2639                                 u64 cookie, bool mgmt_tx)
2640 {
2641         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2642         int ret;
2643
2644         mutex_lock(&local->mtx);
2645         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2646                 struct ieee80211_roc_work *dep, *tmp2;
2647
2648                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2649                         if (!mgmt_tx && dep->cookie != cookie)
2650                                 continue;
2651                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2652                                 continue;
2653                         /* found dependent item -- just remove it */
2654                         list_del(&dep->list);
2655                         mutex_unlock(&local->mtx);
2656
2657                         ieee80211_roc_notify_destroy(dep);
2658                         return 0;
2659                 }
2660
2661                 if (!mgmt_tx && roc->cookie != cookie)
2662                         continue;
2663                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2664                         continue;
2665
2666                 found = roc;
2667                 break;
2668         }
2669
2670         if (!found) {
2671                 mutex_unlock(&local->mtx);
2672                 return -ENOENT;
2673         }
2674
2675         /*
2676          * We found the item to cancel, so do that. Note that it
2677          * may have dependents, which we also cancel (and send
2678          * the expired signal for.) Not doing so would be quite
2679          * tricky here, but we may need to fix it later.
2680          */
2681
2682         if (local->ops->remain_on_channel) {
2683                 if (found->started) {
2684                         ret = drv_cancel_remain_on_channel(local);
2685                         if (WARN_ON_ONCE(ret)) {
2686                                 mutex_unlock(&local->mtx);
2687                                 return ret;
2688                         }
2689                 }
2690
2691                 list_del(&found->list);
2692
2693                 if (found->started)
2694                         ieee80211_start_next_roc(local);
2695                 mutex_unlock(&local->mtx);
2696
2697                 ieee80211_roc_notify_destroy(found);
2698         } else {
2699                 /* work may be pending so use it all the time */
2700                 found->abort = true;
2701                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2702
2703                 mutex_unlock(&local->mtx);
2704
2705                 /* work will clean up etc */
2706                 flush_delayed_work(&found->work);
2707         }
2708
2709         return 0;
2710 }
2711
2712 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2713                                               struct wireless_dev *wdev,
2714                                               u64 cookie)
2715 {
2716         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2717         struct ieee80211_local *local = sdata->local;
2718
2719         return ieee80211_cancel_roc(local, cookie, false);
2720 }
2721
2722 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2723                                            struct net_device *dev,
2724                                            struct cfg80211_chan_def *chandef)
2725 {
2726         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2727         struct ieee80211_local *local = sdata->local;
2728         unsigned long timeout;
2729         int err;
2730
2731         if (!list_empty(&local->roc_list) || local->scanning)
2732                 return -EBUSY;
2733
2734         /* whatever, but channel contexts should not complain about that one */
2735         sdata->smps_mode = IEEE80211_SMPS_OFF;
2736         sdata->needed_rx_chains = local->rx_chains;
2737         sdata->radar_required = true;
2738
2739         mutex_lock(&local->iflist_mtx);
2740         err = ieee80211_vif_use_channel(sdata, chandef,
2741                                         IEEE80211_CHANCTX_SHARED);
2742         mutex_unlock(&local->iflist_mtx);
2743         if (err)
2744                 return err;
2745
2746         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2747         ieee80211_queue_delayed_work(&sdata->local->hw,
2748                                      &sdata->dfs_cac_timer_work, timeout);
2749
2750         return 0;
2751 }
2752
2753 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2754                              struct ieee80211_channel *chan, bool offchan,
2755                              unsigned int wait, const u8 *buf, size_t len,
2756                              bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2757 {
2758         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2759         struct ieee80211_local *local = sdata->local;
2760         struct sk_buff *skb;
2761         struct sta_info *sta;
2762         const struct ieee80211_mgmt *mgmt = (void *)buf;
2763         bool need_offchan = false;
2764         u32 flags;
2765         int ret;
2766
2767         if (dont_wait_for_ack)
2768                 flags = IEEE80211_TX_CTL_NO_ACK;
2769         else
2770                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2771                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2772
2773         if (no_cck)
2774                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2775
2776         switch (sdata->vif.type) {
2777         case NL80211_IFTYPE_ADHOC:
2778                 if (!sdata->vif.bss_conf.ibss_joined)
2779                         need_offchan = true;
2780                 /* fall through */
2781 #ifdef CONFIG_MAC80211_MESH
2782         case NL80211_IFTYPE_MESH_POINT:
2783                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2784                     !sdata->u.mesh.mesh_id_len)
2785                         need_offchan = true;
2786                 /* fall through */
2787 #endif
2788         case NL80211_IFTYPE_AP:
2789         case NL80211_IFTYPE_AP_VLAN:
2790         case NL80211_IFTYPE_P2P_GO:
2791                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2792                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2793                     !rcu_access_pointer(sdata->bss->beacon))
2794                         need_offchan = true;
2795                 if (!ieee80211_is_action(mgmt->frame_control) ||
2796                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2797                         break;
2798                 rcu_read_lock();
2799                 sta = sta_info_get(sdata, mgmt->da);
2800                 rcu_read_unlock();
2801                 if (!sta)
2802                         return -ENOLINK;
2803                 break;
2804         case NL80211_IFTYPE_STATION:
2805         case NL80211_IFTYPE_P2P_CLIENT:
2806                 if (!sdata->u.mgd.associated)
2807                         need_offchan = true;
2808                 break;
2809         case NL80211_IFTYPE_P2P_DEVICE:
2810                 need_offchan = true;
2811                 break;
2812         default:
2813                 return -EOPNOTSUPP;
2814         }
2815
2816         mutex_lock(&local->mtx);
2817
2818         /* Check if the operating channel is the requested channel */
2819         if (!need_offchan) {
2820                 struct ieee80211_chanctx_conf *chanctx_conf;
2821
2822                 rcu_read_lock();
2823                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2824
2825                 if (chanctx_conf)
2826                         need_offchan = chan != chanctx_conf->def.chan;
2827                 else
2828                         need_offchan = true;
2829                 rcu_read_unlock();
2830         }
2831
2832         if (need_offchan && !offchan) {
2833                 ret = -EBUSY;
2834                 goto out_unlock;
2835         }
2836
2837         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2838         if (!skb) {
2839                 ret = -ENOMEM;
2840                 goto out_unlock;
2841         }
2842         skb_reserve(skb, local->hw.extra_tx_headroom);
2843
2844         memcpy(skb_put(skb, len), buf, len);
2845
2846         IEEE80211_SKB_CB(skb)->flags = flags;
2847
2848         skb->dev = sdata->dev;
2849
2850         if (!need_offchan) {
2851                 *cookie = (unsigned long) skb;
2852                 ieee80211_tx_skb(sdata, skb);
2853                 ret = 0;
2854                 goto out_unlock;
2855         }
2856
2857         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2858                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2859         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2860                 IEEE80211_SKB_CB(skb)->hw_queue =
2861                         local->hw.offchannel_tx_hw_queue;
2862
2863         /* This will handle all kinds of coalescing and immediate TX */
2864         ret = ieee80211_start_roc_work(local, sdata, chan,
2865                                        wait, cookie, skb,
2866                                        IEEE80211_ROC_TYPE_MGMT_TX);
2867         if (ret)
2868                 kfree_skb(skb);
2869  out_unlock:
2870         mutex_unlock(&local->mtx);
2871         return ret;
2872 }
2873
2874 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2875                                          struct wireless_dev *wdev,
2876                                          u64 cookie)
2877 {
2878         struct ieee80211_local *local = wiphy_priv(wiphy);
2879
2880         return ieee80211_cancel_roc(local, cookie, true);
2881 }
2882
2883 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2884                                           struct wireless_dev *wdev,
2885                                           u16 frame_type, bool reg)
2886 {
2887         struct ieee80211_local *local = wiphy_priv(wiphy);
2888         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2889
2890         switch (frame_type) {
2891         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2892                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2893                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2894
2895                         if (reg)
2896                                 ifibss->auth_frame_registrations++;
2897                         else
2898                                 ifibss->auth_frame_registrations--;
2899                 }
2900                 break;
2901         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2902                 if (reg)
2903                         local->probe_req_reg++;
2904                 else
2905                         local->probe_req_reg--;
2906
2907                 if (!local->open_count)
2908                         break;
2909
2910                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2911                 break;
2912         default:
2913                 break;
2914         }
2915 }
2916
2917 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2918 {
2919         struct ieee80211_local *local = wiphy_priv(wiphy);
2920
2921         if (local->started)
2922                 return -EOPNOTSUPP;
2923
2924         return drv_set_antenna(local, tx_ant, rx_ant);
2925 }
2926
2927 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2928 {
2929         struct ieee80211_local *local = wiphy_priv(wiphy);
2930
2931         return drv_get_antenna(local, tx_ant, rx_ant);
2932 }
2933
2934 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2935 {
2936         struct ieee80211_local *local = wiphy_priv(wiphy);
2937
2938         return drv_set_ringparam(local, tx, rx);
2939 }
2940
2941 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2942                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2943 {
2944         struct ieee80211_local *local = wiphy_priv(wiphy);
2945
2946         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2947 }
2948
2949 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2950                                     struct net_device *dev,
2951                                     struct cfg80211_gtk_rekey_data *data)
2952 {
2953         struct ieee80211_local *local = wiphy_priv(wiphy);
2954         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2955
2956         if (!local->ops->set_rekey_data)
2957                 return -EOPNOTSUPP;
2958
2959         drv_set_rekey_data(local, sdata, data);
2960
2961         return 0;
2962 }
2963
2964 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2965 {
2966         u8 *pos = (void *)skb_put(skb, 7);
2967
2968         *pos++ = WLAN_EID_EXT_CAPABILITY;
2969         *pos++ = 5; /* len */
2970         *pos++ = 0x0;
2971         *pos++ = 0x0;
2972         *pos++ = 0x0;
2973         *pos++ = 0x0;
2974         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2975 }
2976
2977 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2978 {
2979         struct ieee80211_local *local = sdata->local;
2980         u16 capab;
2981
2982         capab = 0;
2983         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2984                 return capab;
2985
2986         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2987                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2988         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2989                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2990
2991         return capab;
2992 }
2993
2994 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2995                                        u8 *peer, u8 *bssid)
2996 {
2997         struct ieee80211_tdls_lnkie *lnkid;
2998
2999         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3000
3001         lnkid->ie_type = WLAN_EID_LINK_ID;
3002         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3003
3004         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3005         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3006         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3007 }
3008
3009 static int
3010 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3011                                u8 *peer, u8 action_code, u8 dialog_token,
3012                                u16 status_code, struct sk_buff *skb)
3013 {
3014         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3015         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3016         struct ieee80211_tdls_data *tf;
3017
3018         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3019
3020         memcpy(tf->da, peer, ETH_ALEN);
3021         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3022         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3023         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3024
3025         switch (action_code) {
3026         case WLAN_TDLS_SETUP_REQUEST:
3027                 tf->category = WLAN_CATEGORY_TDLS;
3028                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3029
3030                 skb_put(skb, sizeof(tf->u.setup_req));
3031                 tf->u.setup_req.dialog_token = dialog_token;
3032                 tf->u.setup_req.capability =
3033                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3034
3035                 ieee80211_add_srates_ie(sdata, skb, false, band);
3036                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3037                 ieee80211_tdls_add_ext_capab(skb);
3038                 break;
3039         case WLAN_TDLS_SETUP_RESPONSE:
3040                 tf->category = WLAN_CATEGORY_TDLS;
3041                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3042
3043                 skb_put(skb, sizeof(tf->u.setup_resp));
3044                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3045                 tf->u.setup_resp.dialog_token = dialog_token;
3046                 tf->u.setup_resp.capability =
3047                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3048
3049                 ieee80211_add_srates_ie(sdata, skb, false, band);
3050                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3051                 ieee80211_tdls_add_ext_capab(skb);
3052                 break;
3053         case WLAN_TDLS_SETUP_CONFIRM:
3054                 tf->category = WLAN_CATEGORY_TDLS;
3055                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3056
3057                 skb_put(skb, sizeof(tf->u.setup_cfm));
3058                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3059                 tf->u.setup_cfm.dialog_token = dialog_token;
3060                 break;
3061         case WLAN_TDLS_TEARDOWN:
3062                 tf->category = WLAN_CATEGORY_TDLS;
3063                 tf->action_code = WLAN_TDLS_TEARDOWN;
3064
3065                 skb_put(skb, sizeof(tf->u.teardown));
3066                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3067                 break;
3068         case WLAN_TDLS_DISCOVERY_REQUEST:
3069                 tf->category = WLAN_CATEGORY_TDLS;
3070                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3071
3072                 skb_put(skb, sizeof(tf->u.discover_req));
3073                 tf->u.discover_req.dialog_token = dialog_token;
3074                 break;
3075         default:
3076                 return -EINVAL;
3077         }
3078
3079         return 0;
3080 }
3081
3082 static int
3083 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3084                            u8 *peer, u8 action_code, u8 dialog_token,
3085                            u16 status_code, struct sk_buff *skb)
3086 {
3087         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3088         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3089         struct ieee80211_mgmt *mgmt;
3090
3091         mgmt = (void *)skb_put(skb, 24);
3092         memset(mgmt, 0, 24);
3093         memcpy(mgmt->da, peer, ETH_ALEN);
3094         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3095         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3096
3097         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3098                                           IEEE80211_STYPE_ACTION);
3099
3100         switch (action_code) {
3101         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3102                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3103                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3104                 mgmt->u.action.u.tdls_discover_resp.action_code =
3105                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3106                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3107                         dialog_token;
3108                 mgmt->u.action.u.tdls_discover_resp.capability =
3109                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3110
3111                 ieee80211_add_srates_ie(sdata, skb, false, band);
3112                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3113                 ieee80211_tdls_add_ext_capab(skb);
3114                 break;
3115         default:
3116                 return -EINVAL;
3117         }
3118
3119         return 0;
3120 }
3121
3122 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3123                                u8 *peer, u8 action_code, u8 dialog_token,
3124                                u16 status_code, const u8 *extra_ies,
3125                                size_t extra_ies_len)
3126 {
3127         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3128         struct ieee80211_local *local = sdata->local;
3129         struct sk_buff *skb = NULL;
3130         bool send_direct;
3131         int ret;
3132
3133         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3134                 return -ENOTSUPP;
3135
3136         /* make sure we are in managed mode, and associated */
3137         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3138             !sdata->u.mgd.associated)
3139                 return -EINVAL;
3140
3141         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3142                  action_code, peer);
3143
3144         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3145                             max(sizeof(struct ieee80211_mgmt),
3146                                 sizeof(struct ieee80211_tdls_data)) +
3147                             50 + /* supported rates */
3148                             7 + /* ext capab */
3149                             extra_ies_len +
3150                             sizeof(struct ieee80211_tdls_lnkie));
3151         if (!skb)
3152                 return -ENOMEM;
3153
3154         skb_reserve(skb, local->hw.extra_tx_headroom);
3155
3156         switch (action_code) {
3157         case WLAN_TDLS_SETUP_REQUEST:
3158         case WLAN_TDLS_SETUP_RESPONSE:
3159         case WLAN_TDLS_SETUP_CONFIRM:
3160         case WLAN_TDLS_TEARDOWN:
3161         case WLAN_TDLS_DISCOVERY_REQUEST:
3162                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3163                                                      action_code, dialog_token,
3164                                                      status_code, skb);
3165                 send_direct = false;
3166                 break;
3167         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3168                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3169                                                  dialog_token, status_code,
3170                                                  skb);
3171                 send_direct = true;
3172                 break;
3173         default:
3174                 ret = -ENOTSUPP;
3175                 break;
3176         }
3177
3178         if (ret < 0)
3179                 goto fail;
3180
3181         if (extra_ies_len)
3182                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3183
3184         /* the TDLS link IE is always added last */
3185         switch (action_code) {
3186         case WLAN_TDLS_SETUP_REQUEST:
3187         case WLAN_TDLS_SETUP_CONFIRM:
3188         case WLAN_TDLS_TEARDOWN:
3189         case WLAN_TDLS_DISCOVERY_REQUEST:
3190                 /* we are the initiator */
3191                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3192                                            sdata->u.mgd.bssid);
3193                 break;
3194         case WLAN_TDLS_SETUP_RESPONSE:
3195         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3196                 /* we are the responder */
3197                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3198                                            sdata->u.mgd.bssid);
3199                 break;
3200         default:
3201                 ret = -ENOTSUPP;
3202                 goto fail;
3203         }
3204
3205         if (send_direct) {
3206                 ieee80211_tx_skb(sdata, skb);
3207                 return 0;
3208         }
3209
3210         /*
3211          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3212          * we should default to AC_VI.
3213          */
3214         switch (action_code) {
3215         case WLAN_TDLS_SETUP_REQUEST:
3216         case WLAN_TDLS_SETUP_RESPONSE:
3217                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3218                 skb->priority = 2;
3219                 break;
3220         default:
3221                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3222                 skb->priority = 5;
3223                 break;
3224         }
3225
3226         /* disable bottom halves when entering the Tx path */
3227         local_bh_disable();
3228         ret = ieee80211_subif_start_xmit(skb, dev);
3229         local_bh_enable();
3230
3231         return ret;
3232
3233 fail:
3234         dev_kfree_skb(skb);
3235         return ret;
3236 }
3237
3238 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3239                                u8 *peer, enum nl80211_tdls_operation oper)
3240 {
3241         struct sta_info *sta;
3242         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3243
3244         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3245                 return -ENOTSUPP;
3246
3247         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3248                 return -EINVAL;
3249
3250         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3251
3252         switch (oper) {
3253         case NL80211_TDLS_ENABLE_LINK:
3254                 rcu_read_lock();
3255                 sta = sta_info_get(sdata, peer);
3256                 if (!sta) {
3257                         rcu_read_unlock();
3258                         return -ENOLINK;
3259                 }
3260
3261                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3262                 rcu_read_unlock();
3263                 break;
3264         case NL80211_TDLS_DISABLE_LINK:
3265                 return sta_info_destroy_addr(sdata, peer);
3266         case NL80211_TDLS_TEARDOWN:
3267         case NL80211_TDLS_SETUP:
3268         case NL80211_TDLS_DISCOVERY_REQ:
3269                 /* We don't support in-driver setup/teardown/discovery */
3270                 return -ENOTSUPP;
3271         default:
3272                 return -ENOTSUPP;
3273         }
3274
3275         return 0;
3276 }
3277
3278 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3279                                   const u8 *peer, u64 *cookie)
3280 {
3281         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3282         struct ieee80211_local *local = sdata->local;
3283         struct ieee80211_qos_hdr *nullfunc;
3284         struct sk_buff *skb;
3285         int size = sizeof(*nullfunc);
3286         __le16 fc;
3287         bool qos;
3288         struct ieee80211_tx_info *info;
3289         struct sta_info *sta;
3290         struct ieee80211_chanctx_conf *chanctx_conf;
3291         enum ieee80211_band band;
3292
3293         rcu_read_lock();
3294         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3295         if (WARN_ON(!chanctx_conf)) {
3296                 rcu_read_unlock();
3297                 return -EINVAL;
3298         }
3299         band = chanctx_conf->def.chan->band;
3300         sta = sta_info_get(sdata, peer);
3301         if (sta) {
3302                 qos = test_sta_flag(sta, WLAN_STA_WME);
3303         } else {
3304                 rcu_read_unlock();
3305                 return -ENOLINK;
3306         }
3307
3308         if (qos) {
3309                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3310                                  IEEE80211_STYPE_QOS_NULLFUNC |
3311                                  IEEE80211_FCTL_FROMDS);
3312         } else {
3313                 size -= 2;
3314                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3315                                  IEEE80211_STYPE_NULLFUNC |
3316                                  IEEE80211_FCTL_FROMDS);
3317         }
3318
3319         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3320         if (!skb) {
3321                 rcu_read_unlock();
3322                 return -ENOMEM;
3323         }
3324
3325         skb->dev = dev;
3326
3327         skb_reserve(skb, local->hw.extra_tx_headroom);
3328
3329         nullfunc = (void *) skb_put(skb, size);
3330         nullfunc->frame_control = fc;
3331         nullfunc->duration_id = 0;
3332         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3333         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3334         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3335         nullfunc->seq_ctrl = 0;
3336
3337         info = IEEE80211_SKB_CB(skb);
3338
3339         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3340                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3341
3342         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3343         skb->priority = 7;
3344         if (qos)
3345                 nullfunc->qos_ctrl = cpu_to_le16(7);
3346
3347         local_bh_disable();
3348         ieee80211_xmit(sdata, skb, band);
3349         local_bh_enable();
3350         rcu_read_unlock();
3351
3352         *cookie = (unsigned long) skb;
3353         return 0;
3354 }
3355
3356 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3357                                      struct wireless_dev *wdev,
3358                                      struct cfg80211_chan_def *chandef)
3359 {
3360         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3361         struct ieee80211_local *local = wiphy_priv(wiphy);
3362         struct ieee80211_chanctx_conf *chanctx_conf;
3363         int ret = -ENODATA;
3364
3365         rcu_read_lock();
3366         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3367         if (chanctx_conf) {
3368                 *chandef = chanctx_conf->def;
3369                 ret = 0;
3370         } else if (local->open_count > 0 &&
3371                    local->open_count == local->monitors &&
3372                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3373                 if (local->use_chanctx)
3374                         *chandef = local->monitor_chandef;
3375                 else
3376                         cfg80211_chandef_create(chandef,
3377                                                 local->_oper_channel,
3378                                                 local->_oper_channel_type);
3379                 ret = 0;
3380         }
3381         rcu_read_unlock();
3382
3383         return ret;
3384 }
3385
3386 #ifdef CONFIG_PM
3387 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3388 {
3389         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3390 }
3391 #endif
3392
3393 struct cfg80211_ops mac80211_config_ops = {
3394         .add_virtual_intf = ieee80211_add_iface,
3395         .del_virtual_intf = ieee80211_del_iface,
3396         .change_virtual_intf = ieee80211_change_iface,
3397         .start_p2p_device = ieee80211_start_p2p_device,
3398         .stop_p2p_device = ieee80211_stop_p2p_device,
3399         .add_key = ieee80211_add_key,
3400         .del_key = ieee80211_del_key,
3401         .get_key = ieee80211_get_key,
3402         .set_default_key = ieee80211_config_default_key,
3403         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3404         .start_ap = ieee80211_start_ap,
3405         .change_beacon = ieee80211_change_beacon,
3406         .stop_ap = ieee80211_stop_ap,
3407         .add_station = ieee80211_add_station,
3408         .del_station = ieee80211_del_station,
3409         .change_station = ieee80211_change_station,
3410         .get_station = ieee80211_get_station,
3411         .dump_station = ieee80211_dump_station,
3412         .dump_survey = ieee80211_dump_survey,
3413 #ifdef CONFIG_MAC80211_MESH
3414         .add_mpath = ieee80211_add_mpath,
3415         .del_mpath = ieee80211_del_mpath,
3416         .change_mpath = ieee80211_change_mpath,
3417         .get_mpath = ieee80211_get_mpath,
3418         .dump_mpath = ieee80211_dump_mpath,
3419         .update_mesh_config = ieee80211_update_mesh_config,
3420         .get_mesh_config = ieee80211_get_mesh_config,
3421         .join_mesh = ieee80211_join_mesh,
3422         .leave_mesh = ieee80211_leave_mesh,
3423 #endif
3424         .change_bss = ieee80211_change_bss,
3425         .set_txq_params = ieee80211_set_txq_params,
3426         .set_monitor_channel = ieee80211_set_monitor_channel,
3427         .suspend = ieee80211_suspend,
3428         .resume = ieee80211_resume,
3429         .scan = ieee80211_scan,
3430         .sched_scan_start = ieee80211_sched_scan_start,
3431         .sched_scan_stop = ieee80211_sched_scan_stop,
3432         .auth = ieee80211_auth,
3433         .assoc = ieee80211_assoc,
3434         .deauth = ieee80211_deauth,
3435         .disassoc = ieee80211_disassoc,
3436         .join_ibss = ieee80211_join_ibss,
3437         .leave_ibss = ieee80211_leave_ibss,
3438         .set_mcast_rate = ieee80211_set_mcast_rate,
3439         .set_wiphy_params = ieee80211_set_wiphy_params,
3440         .set_tx_power = ieee80211_set_tx_power,
3441         .get_tx_power = ieee80211_get_tx_power,
3442         .set_wds_peer = ieee80211_set_wds_peer,
3443         .rfkill_poll = ieee80211_rfkill_poll,
3444         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3445         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3446         .set_power_mgmt = ieee80211_set_power_mgmt,
3447         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3448         .remain_on_channel = ieee80211_remain_on_channel,
3449         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3450         .mgmt_tx = ieee80211_mgmt_tx,
3451         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3452         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3453         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3454         .set_antenna = ieee80211_set_antenna,
3455         .get_antenna = ieee80211_get_antenna,
3456         .set_ringparam = ieee80211_set_ringparam,
3457         .get_ringparam = ieee80211_get_ringparam,
3458         .set_rekey_data = ieee80211_set_rekey_data,
3459         .tdls_oper = ieee80211_tdls_oper,
3460         .tdls_mgmt = ieee80211_tdls_mgmt,
3461         .probe_client = ieee80211_probe_client,
3462         .set_noack_map = ieee80211_set_noack_map,
3463 #ifdef CONFIG_PM
3464         .set_wakeup = ieee80211_set_wakeup,
3465 #endif
3466         .get_et_sset_count = ieee80211_get_et_sset_count,
3467         .get_et_stats = ieee80211_get_et_stats,
3468         .get_et_strings = ieee80211_get_et_strings,
3469         .get_channel = ieee80211_cfg_get_channel,
3470         .start_radar_detection = ieee80211_start_radar_detection,
3471 };