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cfg80211: provide channel to start_ap function
[deliverable/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
24 enum nl80211_iftype type,
25 u32 *flags,
26 struct vif_params *params)
27 {
28 struct ieee80211_local *local = wiphy_priv(wiphy);
29 struct net_device *dev;
30 struct ieee80211_sub_if_data *sdata;
31 int err;
32
33 err = ieee80211_if_add(local, name, &dev, type, params);
34 if (err)
35 return ERR_PTR(err);
36
37 if (type == NL80211_IFTYPE_MONITOR && flags) {
38 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
39 sdata->u.mntr_flags = *flags;
40 }
41
42 return dev;
43 }
44
45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
46 {
47 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
48
49 return 0;
50 }
51
52 static int ieee80211_change_iface(struct wiphy *wiphy,
53 struct net_device *dev,
54 enum nl80211_iftype type, u32 *flags,
55 struct vif_params *params)
56 {
57 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
58 int ret;
59
60 ret = ieee80211_if_change_type(sdata, type);
61 if (ret)
62 return ret;
63
64 if (type == NL80211_IFTYPE_AP_VLAN &&
65 params && params->use_4addr == 0)
66 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
67 else if (type == NL80211_IFTYPE_STATION &&
68 params && params->use_4addr >= 0)
69 sdata->u.mgd.use_4addr = params->use_4addr;
70
71 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
72 struct ieee80211_local *local = sdata->local;
73
74 if (ieee80211_sdata_running(sdata)) {
75 /*
76 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
77 * changed while the interface is up.
78 * Else we would need to add a lot of cruft
79 * to update everything:
80 * cooked_mntrs, monitor and all fif_* counters
81 * reconfigure hardware
82 */
83 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
84 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
85 return -EBUSY;
86
87 ieee80211_adjust_monitor_flags(sdata, -1);
88 sdata->u.mntr_flags = *flags;
89 ieee80211_adjust_monitor_flags(sdata, 1);
90
91 ieee80211_configure_filter(local);
92 } else {
93 /*
94 * Because the interface is down, ieee80211_do_stop
95 * and ieee80211_do_open take care of "everything"
96 * mentioned in the comment above.
97 */
98 sdata->u.mntr_flags = *flags;
99 }
100 }
101
102 return 0;
103 }
104
105 static int ieee80211_set_noack_map(struct wiphy *wiphy,
106 struct net_device *dev,
107 u16 noack_map)
108 {
109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
110
111 sdata->noack_map = noack_map;
112 return 0;
113 }
114
115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
116 u8 key_idx, bool pairwise, const u8 *mac_addr,
117 struct key_params *params)
118 {
119 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
120 struct sta_info *sta = NULL;
121 struct ieee80211_key *key;
122 int err;
123
124 if (!ieee80211_sdata_running(sdata))
125 return -ENETDOWN;
126
127 /* reject WEP and TKIP keys if WEP failed to initialize */
128 switch (params->cipher) {
129 case WLAN_CIPHER_SUITE_WEP40:
130 case WLAN_CIPHER_SUITE_TKIP:
131 case WLAN_CIPHER_SUITE_WEP104:
132 if (IS_ERR(sdata->local->wep_tx_tfm))
133 return -EINVAL;
134 break;
135 default:
136 break;
137 }
138
139 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
140 params->key, params->seq_len, params->seq);
141 if (IS_ERR(key))
142 return PTR_ERR(key);
143
144 if (pairwise)
145 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
146
147 mutex_lock(&sdata->local->sta_mtx);
148
149 if (mac_addr) {
150 if (ieee80211_vif_is_mesh(&sdata->vif))
151 sta = sta_info_get(sdata, mac_addr);
152 else
153 sta = sta_info_get_bss(sdata, mac_addr);
154 if (!sta) {
155 ieee80211_key_free(sdata->local, key);
156 err = -ENOENT;
157 goto out_unlock;
158 }
159 }
160
161 err = ieee80211_key_link(key, sdata, sta);
162 if (err)
163 ieee80211_key_free(sdata->local, key);
164
165 out_unlock:
166 mutex_unlock(&sdata->local->sta_mtx);
167
168 return err;
169 }
170
171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
172 u8 key_idx, bool pairwise, const u8 *mac_addr)
173 {
174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
175 struct ieee80211_local *local = sdata->local;
176 struct sta_info *sta;
177 struct ieee80211_key *key = NULL;
178 int ret;
179
180 mutex_lock(&local->sta_mtx);
181 mutex_lock(&local->key_mtx);
182
183 if (mac_addr) {
184 ret = -ENOENT;
185
186 sta = sta_info_get_bss(sdata, mac_addr);
187 if (!sta)
188 goto out_unlock;
189
190 if (pairwise)
191 key = key_mtx_dereference(local, sta->ptk);
192 else
193 key = key_mtx_dereference(local, sta->gtk[key_idx]);
194 } else
195 key = key_mtx_dereference(local, sdata->keys[key_idx]);
196
197 if (!key) {
198 ret = -ENOENT;
199 goto out_unlock;
200 }
201
202 __ieee80211_key_free(key);
203
204 ret = 0;
205 out_unlock:
206 mutex_unlock(&local->key_mtx);
207 mutex_unlock(&local->sta_mtx);
208
209 return ret;
210 }
211
212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
213 u8 key_idx, bool pairwise, const u8 *mac_addr,
214 void *cookie,
215 void (*callback)(void *cookie,
216 struct key_params *params))
217 {
218 struct ieee80211_sub_if_data *sdata;
219 struct sta_info *sta = NULL;
220 u8 seq[6] = {0};
221 struct key_params params;
222 struct ieee80211_key *key = NULL;
223 u64 pn64;
224 u32 iv32;
225 u16 iv16;
226 int err = -ENOENT;
227
228 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
229
230 rcu_read_lock();
231
232 if (mac_addr) {
233 sta = sta_info_get_bss(sdata, mac_addr);
234 if (!sta)
235 goto out;
236
237 if (pairwise)
238 key = rcu_dereference(sta->ptk);
239 else if (key_idx < NUM_DEFAULT_KEYS)
240 key = rcu_dereference(sta->gtk[key_idx]);
241 } else
242 key = rcu_dereference(sdata->keys[key_idx]);
243
244 if (!key)
245 goto out;
246
247 memset(&params, 0, sizeof(params));
248
249 params.cipher = key->conf.cipher;
250
251 switch (key->conf.cipher) {
252 case WLAN_CIPHER_SUITE_TKIP:
253 iv32 = key->u.tkip.tx.iv32;
254 iv16 = key->u.tkip.tx.iv16;
255
256 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
257 drv_get_tkip_seq(sdata->local,
258 key->conf.hw_key_idx,
259 &iv32, &iv16);
260
261 seq[0] = iv16 & 0xff;
262 seq[1] = (iv16 >> 8) & 0xff;
263 seq[2] = iv32 & 0xff;
264 seq[3] = (iv32 >> 8) & 0xff;
265 seq[4] = (iv32 >> 16) & 0xff;
266 seq[5] = (iv32 >> 24) & 0xff;
267 params.seq = seq;
268 params.seq_len = 6;
269 break;
270 case WLAN_CIPHER_SUITE_CCMP:
271 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
272 seq[0] = pn64;
273 seq[1] = pn64 >> 8;
274 seq[2] = pn64 >> 16;
275 seq[3] = pn64 >> 24;
276 seq[4] = pn64 >> 32;
277 seq[5] = pn64 >> 40;
278 params.seq = seq;
279 params.seq_len = 6;
280 break;
281 case WLAN_CIPHER_SUITE_AES_CMAC:
282 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
283 seq[0] = pn64;
284 seq[1] = pn64 >> 8;
285 seq[2] = pn64 >> 16;
286 seq[3] = pn64 >> 24;
287 seq[4] = pn64 >> 32;
288 seq[5] = pn64 >> 40;
289 params.seq = seq;
290 params.seq_len = 6;
291 break;
292 }
293
294 params.key = key->conf.key;
295 params.key_len = key->conf.keylen;
296
297 callback(cookie, &params);
298 err = 0;
299
300 out:
301 rcu_read_unlock();
302 return err;
303 }
304
305 static int ieee80211_config_default_key(struct wiphy *wiphy,
306 struct net_device *dev,
307 u8 key_idx, bool uni,
308 bool multi)
309 {
310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
311
312 ieee80211_set_default_key(sdata, key_idx, uni, multi);
313
314 return 0;
315 }
316
317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
318 struct net_device *dev,
319 u8 key_idx)
320 {
321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
322
323 ieee80211_set_default_mgmt_key(sdata, key_idx);
324
325 return 0;
326 }
327
328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
329 {
330 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
331 struct ieee80211_supported_band *sband;
332 sband = sta->local->hw.wiphy->bands[
333 sta->local->hw.conf.channel->band];
334 rate->legacy = sband->bitrates[idx].bitrate;
335 } else
336 rate->mcs = idx;
337 }
338
339 void sta_set_rate_info_tx(struct sta_info *sta,
340 const struct ieee80211_tx_rate *rate,
341 struct rate_info *rinfo)
342 {
343 rinfo->flags = 0;
344 if (rate->flags & IEEE80211_TX_RC_MCS)
345 rinfo->flags |= RATE_INFO_FLAGS_MCS;
346 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
347 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
348 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
349 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
350 rate_idx_to_bitrate(rinfo, sta, rate->idx);
351 }
352
353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
354 {
355 struct ieee80211_sub_if_data *sdata = sta->sdata;
356 struct timespec uptime;
357
358 sinfo->generation = sdata->local->sta_generation;
359
360 sinfo->filled = STATION_INFO_INACTIVE_TIME |
361 STATION_INFO_RX_BYTES |
362 STATION_INFO_TX_BYTES |
363 STATION_INFO_RX_PACKETS |
364 STATION_INFO_TX_PACKETS |
365 STATION_INFO_TX_RETRIES |
366 STATION_INFO_TX_FAILED |
367 STATION_INFO_TX_BITRATE |
368 STATION_INFO_RX_BITRATE |
369 STATION_INFO_RX_DROP_MISC |
370 STATION_INFO_BSS_PARAM |
371 STATION_INFO_CONNECTED_TIME |
372 STATION_INFO_STA_FLAGS |
373 STATION_INFO_BEACON_LOSS_COUNT;
374
375 do_posix_clock_monotonic_gettime(&uptime);
376 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
377
378 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
379 sinfo->rx_bytes = sta->rx_bytes;
380 sinfo->tx_bytes = sta->tx_bytes;
381 sinfo->rx_packets = sta->rx_packets;
382 sinfo->tx_packets = sta->tx_packets;
383 sinfo->tx_retries = sta->tx_retry_count;
384 sinfo->tx_failed = sta->tx_retry_failed;
385 sinfo->rx_dropped_misc = sta->rx_dropped;
386 sinfo->beacon_loss_count = sta->beacon_loss_count;
387
388 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
389 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
390 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
391 sinfo->signal = (s8)sta->last_signal;
392 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
393 }
394
395 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
396
397 sinfo->rxrate.flags = 0;
398 if (sta->last_rx_rate_flag & RX_FLAG_HT)
399 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
400 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
401 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
402 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
403 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
404 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
405
406 if (ieee80211_vif_is_mesh(&sdata->vif)) {
407 #ifdef CONFIG_MAC80211_MESH
408 sinfo->filled |= STATION_INFO_LLID |
409 STATION_INFO_PLID |
410 STATION_INFO_PLINK_STATE;
411
412 sinfo->llid = le16_to_cpu(sta->llid);
413 sinfo->plid = le16_to_cpu(sta->plid);
414 sinfo->plink_state = sta->plink_state;
415 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
416 sinfo->filled |= STATION_INFO_T_OFFSET;
417 sinfo->t_offset = sta->t_offset;
418 }
419 #endif
420 }
421
422 sinfo->bss_param.flags = 0;
423 if (sdata->vif.bss_conf.use_cts_prot)
424 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
425 if (sdata->vif.bss_conf.use_short_preamble)
426 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
427 if (sdata->vif.bss_conf.use_short_slot)
428 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
429 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
430 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
431
432 sinfo->sta_flags.set = 0;
433 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
434 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
435 BIT(NL80211_STA_FLAG_WME) |
436 BIT(NL80211_STA_FLAG_MFP) |
437 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
438 BIT(NL80211_STA_FLAG_TDLS_PEER);
439 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
440 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
441 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
442 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
443 if (test_sta_flag(sta, WLAN_STA_WME))
444 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
445 if (test_sta_flag(sta, WLAN_STA_MFP))
446 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
447 if (test_sta_flag(sta, WLAN_STA_AUTH))
448 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
449 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
450 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
451 }
452
453 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
454 "rx_packets", "rx_bytes", "wep_weak_iv_count",
455 "rx_duplicates", "rx_fragments", "rx_dropped",
456 "tx_packets", "tx_bytes", "tx_fragments",
457 "tx_filtered", "tx_retry_failed", "tx_retries",
458 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
459 "channel", "noise", "ch_time", "ch_time_busy",
460 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
461 };
462 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
463
464 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
465 struct net_device *dev,
466 int sset)
467 {
468 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
469 int rv = 0;
470
471 if (sset == ETH_SS_STATS)
472 rv += STA_STATS_LEN;
473
474 rv += drv_get_et_sset_count(sdata, sset);
475
476 if (rv == 0)
477 return -EOPNOTSUPP;
478 return rv;
479 }
480
481 static void ieee80211_get_et_stats(struct wiphy *wiphy,
482 struct net_device *dev,
483 struct ethtool_stats *stats,
484 u64 *data)
485 {
486 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
487 struct sta_info *sta;
488 struct ieee80211_local *local = sdata->local;
489 struct station_info sinfo;
490 struct survey_info survey;
491 int i, q;
492 #define STA_STATS_SURVEY_LEN 7
493
494 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
495
496 #define ADD_STA_STATS(sta) \
497 do { \
498 data[i++] += sta->rx_packets; \
499 data[i++] += sta->rx_bytes; \
500 data[i++] += sta->wep_weak_iv_count; \
501 data[i++] += sta->num_duplicates; \
502 data[i++] += sta->rx_fragments; \
503 data[i++] += sta->rx_dropped; \
504 \
505 data[i++] += sta->tx_packets; \
506 data[i++] += sta->tx_bytes; \
507 data[i++] += sta->tx_fragments; \
508 data[i++] += sta->tx_filtered_count; \
509 data[i++] += sta->tx_retry_failed; \
510 data[i++] += sta->tx_retry_count; \
511 data[i++] += sta->beacon_loss_count; \
512 } while (0)
513
514 /* For Managed stations, find the single station based on BSSID
515 * and use that. For interface types, iterate through all available
516 * stations and add stats for any station that is assigned to this
517 * network device.
518 */
519
520 rcu_read_lock();
521
522 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
523 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
524
525 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
526 goto do_survey;
527
528 i = 0;
529 ADD_STA_STATS(sta);
530
531 data[i++] = sta->sta_state;
532
533 sinfo.filled = 0;
534 sta_set_sinfo(sta, &sinfo);
535
536 if (sinfo.filled | STATION_INFO_TX_BITRATE)
537 data[i] = 100000 *
538 cfg80211_calculate_bitrate(&sinfo.txrate);
539 i++;
540 if (sinfo.filled | STATION_INFO_RX_BITRATE)
541 data[i] = 100000 *
542 cfg80211_calculate_bitrate(&sinfo.rxrate);
543 i++;
544
545 if (sinfo.filled | STATION_INFO_SIGNAL_AVG)
546 data[i] = (u8)sinfo.signal_avg;
547 i++;
548 } else {
549 list_for_each_entry_rcu(sta, &local->sta_list, list) {
550 /* Make sure this station belongs to the proper dev */
551 if (sta->sdata->dev != dev)
552 continue;
553
554 i = 0;
555 ADD_STA_STATS(sta);
556 }
557 }
558
559 do_survey:
560 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
561 /* Get survey stats for current channel */
562 q = 0;
563 while (true) {
564 survey.filled = 0;
565 if (drv_get_survey(local, q, &survey) != 0) {
566 survey.filled = 0;
567 break;
568 }
569
570 if (survey.channel &&
571 (local->oper_channel->center_freq ==
572 survey.channel->center_freq))
573 break;
574 q++;
575 }
576
577 if (survey.filled)
578 data[i++] = survey.channel->center_freq;
579 else
580 data[i++] = 0;
581 if (survey.filled & SURVEY_INFO_NOISE_DBM)
582 data[i++] = (u8)survey.noise;
583 else
584 data[i++] = -1LL;
585 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
586 data[i++] = survey.channel_time;
587 else
588 data[i++] = -1LL;
589 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
590 data[i++] = survey.channel_time_busy;
591 else
592 data[i++] = -1LL;
593 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
594 data[i++] = survey.channel_time_ext_busy;
595 else
596 data[i++] = -1LL;
597 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
598 data[i++] = survey.channel_time_rx;
599 else
600 data[i++] = -1LL;
601 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
602 data[i++] = survey.channel_time_tx;
603 else
604 data[i++] = -1LL;
605
606 rcu_read_unlock();
607
608 if (WARN_ON(i != STA_STATS_LEN))
609 return;
610
611 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
612 }
613
614 static void ieee80211_get_et_strings(struct wiphy *wiphy,
615 struct net_device *dev,
616 u32 sset, u8 *data)
617 {
618 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
619 int sz_sta_stats = 0;
620
621 if (sset == ETH_SS_STATS) {
622 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
623 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
624 }
625 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
626 }
627
628 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
629 int idx, u8 *mac, struct station_info *sinfo)
630 {
631 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
632 struct sta_info *sta;
633 int ret = -ENOENT;
634
635 rcu_read_lock();
636
637 sta = sta_info_get_by_idx(sdata, idx);
638 if (sta) {
639 ret = 0;
640 memcpy(mac, sta->sta.addr, ETH_ALEN);
641 sta_set_sinfo(sta, sinfo);
642 }
643
644 rcu_read_unlock();
645
646 return ret;
647 }
648
649 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
650 int idx, struct survey_info *survey)
651 {
652 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
653
654 return drv_get_survey(local, idx, survey);
655 }
656
657 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
658 u8 *mac, struct station_info *sinfo)
659 {
660 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
661 struct sta_info *sta;
662 int ret = -ENOENT;
663
664 rcu_read_lock();
665
666 sta = sta_info_get_bss(sdata, mac);
667 if (sta) {
668 ret = 0;
669 sta_set_sinfo(sta, sinfo);
670 }
671
672 rcu_read_unlock();
673
674 return ret;
675 }
676
677 static int ieee80211_set_channel(struct wiphy *wiphy,
678 struct net_device *netdev,
679 struct ieee80211_channel *chan,
680 enum nl80211_channel_type channel_type)
681 {
682 struct ieee80211_local *local = wiphy_priv(wiphy);
683 struct ieee80211_sub_if_data *sdata = NULL;
684
685 if (netdev)
686 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
687
688 switch (ieee80211_get_channel_mode(local, NULL)) {
689 case CHAN_MODE_HOPPING:
690 return -EBUSY;
691 case CHAN_MODE_FIXED:
692 if (local->oper_channel != chan)
693 return -EBUSY;
694 if (!sdata && local->_oper_channel_type == channel_type)
695 return 0;
696 break;
697 case CHAN_MODE_UNDEFINED:
698 break;
699 }
700
701 if (!ieee80211_set_channel_type(local, sdata, channel_type))
702 return -EBUSY;
703
704 local->oper_channel = chan;
705
706 /* auto-detects changes */
707 ieee80211_hw_config(local, 0);
708
709 return 0;
710 }
711
712 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
713 const u8 *resp, size_t resp_len)
714 {
715 struct sk_buff *new, *old;
716
717 if (!resp || !resp_len)
718 return 1;
719
720 old = rtnl_dereference(sdata->u.ap.probe_resp);
721
722 new = dev_alloc_skb(resp_len);
723 if (!new)
724 return -ENOMEM;
725
726 memcpy(skb_put(new, resp_len), resp, resp_len);
727
728 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
729 if (old) {
730 /* TODO: use call_rcu() */
731 synchronize_rcu();
732 dev_kfree_skb(old);
733 }
734
735 return 0;
736 }
737
738 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
739 struct cfg80211_beacon_data *params)
740 {
741 struct beacon_data *new, *old;
742 int new_head_len, new_tail_len;
743 int size, err;
744 u32 changed = BSS_CHANGED_BEACON;
745
746 old = rtnl_dereference(sdata->u.ap.beacon);
747
748 /* Need to have a beacon head if we don't have one yet */
749 if (!params->head && !old)
750 return -EINVAL;
751
752 /* new or old head? */
753 if (params->head)
754 new_head_len = params->head_len;
755 else
756 new_head_len = old->head_len;
757
758 /* new or old tail? */
759 if (params->tail || !old)
760 /* params->tail_len will be zero for !params->tail */
761 new_tail_len = params->tail_len;
762 else
763 new_tail_len = old->tail_len;
764
765 size = sizeof(*new) + new_head_len + new_tail_len;
766
767 new = kzalloc(size, GFP_KERNEL);
768 if (!new)
769 return -ENOMEM;
770
771 /* start filling the new info now */
772
773 /*
774 * pointers go into the block we allocated,
775 * memory is | beacon_data | head | tail |
776 */
777 new->head = ((u8 *) new) + sizeof(*new);
778 new->tail = new->head + new_head_len;
779 new->head_len = new_head_len;
780 new->tail_len = new_tail_len;
781
782 /* copy in head */
783 if (params->head)
784 memcpy(new->head, params->head, new_head_len);
785 else
786 memcpy(new->head, old->head, new_head_len);
787
788 /* copy in optional tail */
789 if (params->tail)
790 memcpy(new->tail, params->tail, new_tail_len);
791 else
792 if (old)
793 memcpy(new->tail, old->tail, new_tail_len);
794
795 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
796 params->probe_resp_len);
797 if (err < 0)
798 return err;
799 if (err == 0)
800 changed |= BSS_CHANGED_AP_PROBE_RESP;
801
802 rcu_assign_pointer(sdata->u.ap.beacon, new);
803
804 if (old)
805 kfree_rcu(old, rcu_head);
806
807 return changed;
808 }
809
810 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
811 struct cfg80211_ap_settings *params)
812 {
813 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
814 struct beacon_data *old;
815 struct ieee80211_sub_if_data *vlan;
816 u32 changed = BSS_CHANGED_BEACON_INT |
817 BSS_CHANGED_BEACON_ENABLED |
818 BSS_CHANGED_BEACON |
819 BSS_CHANGED_SSID;
820 int err;
821
822 old = rtnl_dereference(sdata->u.ap.beacon);
823 if (old)
824 return -EALREADY;
825
826 err = ieee80211_set_channel(wiphy, dev, params->channel,
827 params->channel_type);
828 if (err)
829 return err;
830
831 /*
832 * Apply control port protocol, this allows us to
833 * not encrypt dynamic WEP control frames.
834 */
835 sdata->control_port_protocol = params->crypto.control_port_ethertype;
836 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
837 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
838 vlan->control_port_protocol =
839 params->crypto.control_port_ethertype;
840 vlan->control_port_no_encrypt =
841 params->crypto.control_port_no_encrypt;
842 }
843
844 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
845 sdata->vif.bss_conf.dtim_period = params->dtim_period;
846
847 sdata->vif.bss_conf.ssid_len = params->ssid_len;
848 if (params->ssid_len)
849 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
850 params->ssid_len);
851 sdata->vif.bss_conf.hidden_ssid =
852 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
853
854 err = ieee80211_assign_beacon(sdata, &params->beacon);
855 if (err < 0)
856 return err;
857 changed |= err;
858
859 ieee80211_bss_info_change_notify(sdata, changed);
860
861 netif_carrier_on(dev);
862 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
863 netif_carrier_on(vlan->dev);
864
865 return 0;
866 }
867
868 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
869 struct cfg80211_beacon_data *params)
870 {
871 struct ieee80211_sub_if_data *sdata;
872 struct beacon_data *old;
873 int err;
874
875 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
876
877 old = rtnl_dereference(sdata->u.ap.beacon);
878 if (!old)
879 return -ENOENT;
880
881 err = ieee80211_assign_beacon(sdata, params);
882 if (err < 0)
883 return err;
884 ieee80211_bss_info_change_notify(sdata, err);
885 return 0;
886 }
887
888 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
889 {
890 struct ieee80211_sub_if_data *sdata, *vlan;
891 struct beacon_data *old;
892
893 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
894
895 old = rtnl_dereference(sdata->u.ap.beacon);
896 if (!old)
897 return -ENOENT;
898
899 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
900 netif_carrier_off(vlan->dev);
901 netif_carrier_off(dev);
902
903 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
904
905 kfree_rcu(old, rcu_head);
906
907 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
908
909 return 0;
910 }
911
912 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
913 struct iapp_layer2_update {
914 u8 da[ETH_ALEN]; /* broadcast */
915 u8 sa[ETH_ALEN]; /* STA addr */
916 __be16 len; /* 6 */
917 u8 dsap; /* 0 */
918 u8 ssap; /* 0 */
919 u8 control;
920 u8 xid_info[3];
921 } __packed;
922
923 static void ieee80211_send_layer2_update(struct sta_info *sta)
924 {
925 struct iapp_layer2_update *msg;
926 struct sk_buff *skb;
927
928 /* Send Level 2 Update Frame to update forwarding tables in layer 2
929 * bridge devices */
930
931 skb = dev_alloc_skb(sizeof(*msg));
932 if (!skb)
933 return;
934 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
935
936 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
937 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
938
939 memset(msg->da, 0xff, ETH_ALEN);
940 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
941 msg->len = htons(6);
942 msg->dsap = 0;
943 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
944 msg->control = 0xaf; /* XID response lsb.1111F101.
945 * F=0 (no poll command; unsolicited frame) */
946 msg->xid_info[0] = 0x81; /* XID format identifier */
947 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
948 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
949
950 skb->dev = sta->sdata->dev;
951 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
952 memset(skb->cb, 0, sizeof(skb->cb));
953 netif_rx_ni(skb);
954 }
955
956 static int sta_apply_parameters(struct ieee80211_local *local,
957 struct sta_info *sta,
958 struct station_parameters *params)
959 {
960 int ret = 0;
961 u32 rates;
962 int i, j;
963 struct ieee80211_supported_band *sband;
964 struct ieee80211_sub_if_data *sdata = sta->sdata;
965 u32 mask, set;
966
967 sband = local->hw.wiphy->bands[local->oper_channel->band];
968
969 mask = params->sta_flags_mask;
970 set = params->sta_flags_set;
971
972 /*
973 * In mesh mode, we can clear AUTHENTICATED flag but must
974 * also make ASSOCIATED follow appropriately for the driver
975 * API. See also below, after AUTHORIZED changes.
976 */
977 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
978 /* cfg80211 should not allow this in non-mesh modes */
979 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
980 return -EINVAL;
981
982 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
983 !test_sta_flag(sta, WLAN_STA_AUTH)) {
984 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
985 if (ret)
986 return ret;
987 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
988 if (ret)
989 return ret;
990 }
991 }
992
993 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
994 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
995 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
996 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
997 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
998 if (ret)
999 return ret;
1000 }
1001
1002 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1003 /* cfg80211 should not allow this in non-mesh modes */
1004 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1005 return -EINVAL;
1006
1007 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1008 test_sta_flag(sta, WLAN_STA_AUTH)) {
1009 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1010 if (ret)
1011 return ret;
1012 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1013 if (ret)
1014 return ret;
1015 }
1016 }
1017
1018
1019 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1020 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1021 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1022 else
1023 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1024 }
1025
1026 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1027 if (set & BIT(NL80211_STA_FLAG_WME)) {
1028 set_sta_flag(sta, WLAN_STA_WME);
1029 sta->sta.wme = true;
1030 } else {
1031 clear_sta_flag(sta, WLAN_STA_WME);
1032 sta->sta.wme = false;
1033 }
1034 }
1035
1036 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1037 if (set & BIT(NL80211_STA_FLAG_MFP))
1038 set_sta_flag(sta, WLAN_STA_MFP);
1039 else
1040 clear_sta_flag(sta, WLAN_STA_MFP);
1041 }
1042
1043 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1044 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1045 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1046 else
1047 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1048 }
1049
1050 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1051 sta->sta.uapsd_queues = params->uapsd_queues;
1052 sta->sta.max_sp = params->max_sp;
1053 }
1054
1055 /*
1056 * cfg80211 validates this (1-2007) and allows setting the AID
1057 * only when creating a new station entry
1058 */
1059 if (params->aid)
1060 sta->sta.aid = params->aid;
1061
1062 /*
1063 * FIXME: updating the following information is racy when this
1064 * function is called from ieee80211_change_station().
1065 * However, all this information should be static so
1066 * maybe we should just reject attemps to change it.
1067 */
1068
1069 if (params->listen_interval >= 0)
1070 sta->listen_interval = params->listen_interval;
1071
1072 if (params->supported_rates) {
1073 rates = 0;
1074
1075 for (i = 0; i < params->supported_rates_len; i++) {
1076 int rate = (params->supported_rates[i] & 0x7f) * 5;
1077 for (j = 0; j < sband->n_bitrates; j++) {
1078 if (sband->bitrates[j].bitrate == rate)
1079 rates |= BIT(j);
1080 }
1081 }
1082 sta->sta.supp_rates[local->oper_channel->band] = rates;
1083 }
1084
1085 if (params->ht_capa)
1086 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1087 params->ht_capa,
1088 &sta->sta.ht_cap);
1089
1090 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1091 #ifdef CONFIG_MAC80211_MESH
1092 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1093 switch (params->plink_state) {
1094 case NL80211_PLINK_LISTEN:
1095 case NL80211_PLINK_ESTAB:
1096 case NL80211_PLINK_BLOCKED:
1097 sta->plink_state = params->plink_state;
1098 break;
1099 default:
1100 /* nothing */
1101 break;
1102 }
1103 else
1104 switch (params->plink_action) {
1105 case PLINK_ACTION_OPEN:
1106 mesh_plink_open(sta);
1107 break;
1108 case PLINK_ACTION_BLOCK:
1109 mesh_plink_block(sta);
1110 break;
1111 }
1112 #endif
1113 }
1114
1115 return 0;
1116 }
1117
1118 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1119 u8 *mac, struct station_parameters *params)
1120 {
1121 struct ieee80211_local *local = wiphy_priv(wiphy);
1122 struct sta_info *sta;
1123 struct ieee80211_sub_if_data *sdata;
1124 int err;
1125 int layer2_update;
1126
1127 if (params->vlan) {
1128 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1129
1130 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1131 sdata->vif.type != NL80211_IFTYPE_AP)
1132 return -EINVAL;
1133 } else
1134 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1135
1136 if (ether_addr_equal(mac, sdata->vif.addr))
1137 return -EINVAL;
1138
1139 if (is_multicast_ether_addr(mac))
1140 return -EINVAL;
1141
1142 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1143 if (!sta)
1144 return -ENOMEM;
1145
1146 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1147 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1148
1149 err = sta_apply_parameters(local, sta, params);
1150 if (err) {
1151 sta_info_free(local, sta);
1152 return err;
1153 }
1154
1155 /*
1156 * for TDLS, rate control should be initialized only when supported
1157 * rates are known.
1158 */
1159 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1160 rate_control_rate_init(sta);
1161
1162 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1163 sdata->vif.type == NL80211_IFTYPE_AP;
1164
1165 err = sta_info_insert_rcu(sta);
1166 if (err) {
1167 rcu_read_unlock();
1168 return err;
1169 }
1170
1171 if (layer2_update)
1172 ieee80211_send_layer2_update(sta);
1173
1174 rcu_read_unlock();
1175
1176 return 0;
1177 }
1178
1179 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1180 u8 *mac)
1181 {
1182 struct ieee80211_local *local = wiphy_priv(wiphy);
1183 struct ieee80211_sub_if_data *sdata;
1184
1185 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1186
1187 if (mac)
1188 return sta_info_destroy_addr_bss(sdata, mac);
1189
1190 sta_info_flush(local, sdata);
1191 return 0;
1192 }
1193
1194 static int ieee80211_change_station(struct wiphy *wiphy,
1195 struct net_device *dev,
1196 u8 *mac,
1197 struct station_parameters *params)
1198 {
1199 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1200 struct ieee80211_local *local = wiphy_priv(wiphy);
1201 struct sta_info *sta;
1202 struct ieee80211_sub_if_data *vlansdata;
1203 int err;
1204
1205 mutex_lock(&local->sta_mtx);
1206
1207 sta = sta_info_get_bss(sdata, mac);
1208 if (!sta) {
1209 mutex_unlock(&local->sta_mtx);
1210 return -ENOENT;
1211 }
1212
1213 /* in station mode, supported rates are only valid with TDLS */
1214 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1215 params->supported_rates &&
1216 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1217 mutex_unlock(&local->sta_mtx);
1218 return -EINVAL;
1219 }
1220
1221 if (params->vlan && params->vlan != sta->sdata->dev) {
1222 bool prev_4addr = false;
1223 bool new_4addr = false;
1224
1225 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1226
1227 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1228 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1229 mutex_unlock(&local->sta_mtx);
1230 return -EINVAL;
1231 }
1232
1233 if (params->vlan->ieee80211_ptr->use_4addr) {
1234 if (vlansdata->u.vlan.sta) {
1235 mutex_unlock(&local->sta_mtx);
1236 return -EBUSY;
1237 }
1238
1239 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1240 new_4addr = true;
1241 }
1242
1243 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1244 sta->sdata->u.vlan.sta) {
1245 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1246 prev_4addr = true;
1247 }
1248
1249 sta->sdata = vlansdata;
1250
1251 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1252 prev_4addr != new_4addr) {
1253 if (new_4addr)
1254 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1255 else
1256 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1257 }
1258
1259 ieee80211_send_layer2_update(sta);
1260 }
1261
1262 err = sta_apply_parameters(local, sta, params);
1263 if (err) {
1264 mutex_unlock(&local->sta_mtx);
1265 return err;
1266 }
1267
1268 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1269 rate_control_rate_init(sta);
1270
1271 mutex_unlock(&local->sta_mtx);
1272
1273 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1274 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1275 ieee80211_recalc_ps(local, -1);
1276
1277 return 0;
1278 }
1279
1280 #ifdef CONFIG_MAC80211_MESH
1281 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1282 u8 *dst, u8 *next_hop)
1283 {
1284 struct ieee80211_sub_if_data *sdata;
1285 struct mesh_path *mpath;
1286 struct sta_info *sta;
1287 int err;
1288
1289 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1290
1291 rcu_read_lock();
1292 sta = sta_info_get(sdata, next_hop);
1293 if (!sta) {
1294 rcu_read_unlock();
1295 return -ENOENT;
1296 }
1297
1298 err = mesh_path_add(dst, sdata);
1299 if (err) {
1300 rcu_read_unlock();
1301 return err;
1302 }
1303
1304 mpath = mesh_path_lookup(dst, sdata);
1305 if (!mpath) {
1306 rcu_read_unlock();
1307 return -ENXIO;
1308 }
1309 mesh_path_fix_nexthop(mpath, sta);
1310
1311 rcu_read_unlock();
1312 return 0;
1313 }
1314
1315 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1316 u8 *dst)
1317 {
1318 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1319
1320 if (dst)
1321 return mesh_path_del(dst, sdata);
1322
1323 mesh_path_flush_by_iface(sdata);
1324 return 0;
1325 }
1326
1327 static int ieee80211_change_mpath(struct wiphy *wiphy,
1328 struct net_device *dev,
1329 u8 *dst, u8 *next_hop)
1330 {
1331 struct ieee80211_sub_if_data *sdata;
1332 struct mesh_path *mpath;
1333 struct sta_info *sta;
1334
1335 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1336
1337 rcu_read_lock();
1338
1339 sta = sta_info_get(sdata, next_hop);
1340 if (!sta) {
1341 rcu_read_unlock();
1342 return -ENOENT;
1343 }
1344
1345 mpath = mesh_path_lookup(dst, sdata);
1346 if (!mpath) {
1347 rcu_read_unlock();
1348 return -ENOENT;
1349 }
1350
1351 mesh_path_fix_nexthop(mpath, sta);
1352
1353 rcu_read_unlock();
1354 return 0;
1355 }
1356
1357 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1358 struct mpath_info *pinfo)
1359 {
1360 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1361
1362 if (next_hop_sta)
1363 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1364 else
1365 memset(next_hop, 0, ETH_ALEN);
1366
1367 pinfo->generation = mesh_paths_generation;
1368
1369 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1370 MPATH_INFO_SN |
1371 MPATH_INFO_METRIC |
1372 MPATH_INFO_EXPTIME |
1373 MPATH_INFO_DISCOVERY_TIMEOUT |
1374 MPATH_INFO_DISCOVERY_RETRIES |
1375 MPATH_INFO_FLAGS;
1376
1377 pinfo->frame_qlen = mpath->frame_queue.qlen;
1378 pinfo->sn = mpath->sn;
1379 pinfo->metric = mpath->metric;
1380 if (time_before(jiffies, mpath->exp_time))
1381 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1382 pinfo->discovery_timeout =
1383 jiffies_to_msecs(mpath->discovery_timeout);
1384 pinfo->discovery_retries = mpath->discovery_retries;
1385 pinfo->flags = 0;
1386 if (mpath->flags & MESH_PATH_ACTIVE)
1387 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1388 if (mpath->flags & MESH_PATH_RESOLVING)
1389 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1390 if (mpath->flags & MESH_PATH_SN_VALID)
1391 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1392 if (mpath->flags & MESH_PATH_FIXED)
1393 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1394 if (mpath->flags & MESH_PATH_RESOLVING)
1395 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1396
1397 pinfo->flags = mpath->flags;
1398 }
1399
1400 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1401 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1402
1403 {
1404 struct ieee80211_sub_if_data *sdata;
1405 struct mesh_path *mpath;
1406
1407 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1408
1409 rcu_read_lock();
1410 mpath = mesh_path_lookup(dst, sdata);
1411 if (!mpath) {
1412 rcu_read_unlock();
1413 return -ENOENT;
1414 }
1415 memcpy(dst, mpath->dst, ETH_ALEN);
1416 mpath_set_pinfo(mpath, next_hop, pinfo);
1417 rcu_read_unlock();
1418 return 0;
1419 }
1420
1421 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1422 int idx, u8 *dst, u8 *next_hop,
1423 struct mpath_info *pinfo)
1424 {
1425 struct ieee80211_sub_if_data *sdata;
1426 struct mesh_path *mpath;
1427
1428 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1429
1430 rcu_read_lock();
1431 mpath = mesh_path_lookup_by_idx(idx, sdata);
1432 if (!mpath) {
1433 rcu_read_unlock();
1434 return -ENOENT;
1435 }
1436 memcpy(dst, mpath->dst, ETH_ALEN);
1437 mpath_set_pinfo(mpath, next_hop, pinfo);
1438 rcu_read_unlock();
1439 return 0;
1440 }
1441
1442 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1443 struct net_device *dev,
1444 struct mesh_config *conf)
1445 {
1446 struct ieee80211_sub_if_data *sdata;
1447 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1448
1449 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1450 return 0;
1451 }
1452
1453 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1454 {
1455 return (mask >> (parm-1)) & 0x1;
1456 }
1457
1458 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1459 const struct mesh_setup *setup)
1460 {
1461 u8 *new_ie;
1462 const u8 *old_ie;
1463 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1464 struct ieee80211_sub_if_data, u.mesh);
1465
1466 /* allocate information elements */
1467 new_ie = NULL;
1468 old_ie = ifmsh->ie;
1469
1470 if (setup->ie_len) {
1471 new_ie = kmemdup(setup->ie, setup->ie_len,
1472 GFP_KERNEL);
1473 if (!new_ie)
1474 return -ENOMEM;
1475 }
1476 ifmsh->ie_len = setup->ie_len;
1477 ifmsh->ie = new_ie;
1478 kfree(old_ie);
1479
1480 /* now copy the rest of the setup parameters */
1481 ifmsh->mesh_id_len = setup->mesh_id_len;
1482 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1483 ifmsh->mesh_sp_id = setup->sync_method;
1484 ifmsh->mesh_pp_id = setup->path_sel_proto;
1485 ifmsh->mesh_pm_id = setup->path_metric;
1486 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1487 if (setup->is_authenticated)
1488 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1489 if (setup->is_secure)
1490 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1491
1492 /* mcast rate setting in Mesh Node */
1493 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1494 sizeof(setup->mcast_rate));
1495
1496 return 0;
1497 }
1498
1499 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1500 struct net_device *dev, u32 mask,
1501 const struct mesh_config *nconf)
1502 {
1503 struct mesh_config *conf;
1504 struct ieee80211_sub_if_data *sdata;
1505 struct ieee80211_if_mesh *ifmsh;
1506
1507 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1508 ifmsh = &sdata->u.mesh;
1509
1510 /* Set the config options which we are interested in setting */
1511 conf = &(sdata->u.mesh.mshcfg);
1512 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1513 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1514 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1515 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1516 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1517 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1518 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1519 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1520 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1521 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1522 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1523 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1524 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1525 conf->dot11MeshTTL = nconf->element_ttl;
1526 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1527 conf->auto_open_plinks = nconf->auto_open_plinks;
1528 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1529 conf->dot11MeshNbrOffsetMaxNeighbor =
1530 nconf->dot11MeshNbrOffsetMaxNeighbor;
1531 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1532 conf->dot11MeshHWMPmaxPREQretries =
1533 nconf->dot11MeshHWMPmaxPREQretries;
1534 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1535 conf->path_refresh_time = nconf->path_refresh_time;
1536 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1537 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1538 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1539 conf->dot11MeshHWMPactivePathTimeout =
1540 nconf->dot11MeshHWMPactivePathTimeout;
1541 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1542 conf->dot11MeshHWMPpreqMinInterval =
1543 nconf->dot11MeshHWMPpreqMinInterval;
1544 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1545 conf->dot11MeshHWMPperrMinInterval =
1546 nconf->dot11MeshHWMPperrMinInterval;
1547 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1548 mask))
1549 conf->dot11MeshHWMPnetDiameterTraversalTime =
1550 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1551 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1552 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1553 ieee80211_mesh_root_setup(ifmsh);
1554 }
1555 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1556 /* our current gate announcement implementation rides on root
1557 * announcements, so require this ifmsh to also be a root node
1558 * */
1559 if (nconf->dot11MeshGateAnnouncementProtocol &&
1560 !conf->dot11MeshHWMPRootMode) {
1561 conf->dot11MeshHWMPRootMode = 1;
1562 ieee80211_mesh_root_setup(ifmsh);
1563 }
1564 conf->dot11MeshGateAnnouncementProtocol =
1565 nconf->dot11MeshGateAnnouncementProtocol;
1566 }
1567 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1568 conf->dot11MeshHWMPRannInterval =
1569 nconf->dot11MeshHWMPRannInterval;
1570 }
1571 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1572 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1573 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1574 /* our RSSI threshold implementation is supported only for
1575 * devices that report signal in dBm.
1576 */
1577 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1578 return -ENOTSUPP;
1579 conf->rssi_threshold = nconf->rssi_threshold;
1580 }
1581 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1582 conf->ht_opmode = nconf->ht_opmode;
1583 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1584 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1585 }
1586 return 0;
1587 }
1588
1589 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1590 const struct mesh_config *conf,
1591 const struct mesh_setup *setup)
1592 {
1593 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1594 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1595 int err;
1596
1597 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1598 err = copy_mesh_setup(ifmsh, setup);
1599 if (err)
1600 return err;
1601 ieee80211_start_mesh(sdata);
1602
1603 return 0;
1604 }
1605
1606 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1607 {
1608 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610 ieee80211_stop_mesh(sdata);
1611
1612 return 0;
1613 }
1614 #endif
1615
1616 static int ieee80211_change_bss(struct wiphy *wiphy,
1617 struct net_device *dev,
1618 struct bss_parameters *params)
1619 {
1620 struct ieee80211_sub_if_data *sdata;
1621 u32 changed = 0;
1622
1623 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1624
1625 if (params->use_cts_prot >= 0) {
1626 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1627 changed |= BSS_CHANGED_ERP_CTS_PROT;
1628 }
1629 if (params->use_short_preamble >= 0) {
1630 sdata->vif.bss_conf.use_short_preamble =
1631 params->use_short_preamble;
1632 changed |= BSS_CHANGED_ERP_PREAMBLE;
1633 }
1634
1635 if (!sdata->vif.bss_conf.use_short_slot &&
1636 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1637 sdata->vif.bss_conf.use_short_slot = true;
1638 changed |= BSS_CHANGED_ERP_SLOT;
1639 }
1640
1641 if (params->use_short_slot_time >= 0) {
1642 sdata->vif.bss_conf.use_short_slot =
1643 params->use_short_slot_time;
1644 changed |= BSS_CHANGED_ERP_SLOT;
1645 }
1646
1647 if (params->basic_rates) {
1648 int i, j;
1649 u32 rates = 0;
1650 struct ieee80211_local *local = wiphy_priv(wiphy);
1651 struct ieee80211_supported_band *sband =
1652 wiphy->bands[local->oper_channel->band];
1653
1654 for (i = 0; i < params->basic_rates_len; i++) {
1655 int rate = (params->basic_rates[i] & 0x7f) * 5;
1656 for (j = 0; j < sband->n_bitrates; j++) {
1657 if (sband->bitrates[j].bitrate == rate)
1658 rates |= BIT(j);
1659 }
1660 }
1661 sdata->vif.bss_conf.basic_rates = rates;
1662 changed |= BSS_CHANGED_BASIC_RATES;
1663 }
1664
1665 if (params->ap_isolate >= 0) {
1666 if (params->ap_isolate)
1667 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1668 else
1669 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1670 }
1671
1672 if (params->ht_opmode >= 0) {
1673 sdata->vif.bss_conf.ht_operation_mode =
1674 (u16) params->ht_opmode;
1675 changed |= BSS_CHANGED_HT;
1676 }
1677
1678 ieee80211_bss_info_change_notify(sdata, changed);
1679
1680 return 0;
1681 }
1682
1683 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1684 struct net_device *dev,
1685 struct ieee80211_txq_params *params)
1686 {
1687 struct ieee80211_local *local = wiphy_priv(wiphy);
1688 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1689 struct ieee80211_tx_queue_params p;
1690
1691 if (!local->ops->conf_tx)
1692 return -EOPNOTSUPP;
1693
1694 if (local->hw.queues < IEEE80211_NUM_ACS)
1695 return -EOPNOTSUPP;
1696
1697 memset(&p, 0, sizeof(p));
1698 p.aifs = params->aifs;
1699 p.cw_max = params->cwmax;
1700 p.cw_min = params->cwmin;
1701 p.txop = params->txop;
1702
1703 /*
1704 * Setting tx queue params disables u-apsd because it's only
1705 * called in master mode.
1706 */
1707 p.uapsd = false;
1708
1709 sdata->tx_conf[params->ac] = p;
1710 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1711 wiphy_debug(local->hw.wiphy,
1712 "failed to set TX queue parameters for AC %d\n",
1713 params->ac);
1714 return -EINVAL;
1715 }
1716
1717 return 0;
1718 }
1719
1720 #ifdef CONFIG_PM
1721 static int ieee80211_suspend(struct wiphy *wiphy,
1722 struct cfg80211_wowlan *wowlan)
1723 {
1724 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1725 }
1726
1727 static int ieee80211_resume(struct wiphy *wiphy)
1728 {
1729 return __ieee80211_resume(wiphy_priv(wiphy));
1730 }
1731 #else
1732 #define ieee80211_suspend NULL
1733 #define ieee80211_resume NULL
1734 #endif
1735
1736 static int ieee80211_scan(struct wiphy *wiphy,
1737 struct net_device *dev,
1738 struct cfg80211_scan_request *req)
1739 {
1740 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1741
1742 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1743 case NL80211_IFTYPE_STATION:
1744 case NL80211_IFTYPE_ADHOC:
1745 case NL80211_IFTYPE_MESH_POINT:
1746 case NL80211_IFTYPE_P2P_CLIENT:
1747 break;
1748 case NL80211_IFTYPE_P2P_GO:
1749 if (sdata->local->ops->hw_scan)
1750 break;
1751 /*
1752 * FIXME: implement NoA while scanning in software,
1753 * for now fall through to allow scanning only when
1754 * beaconing hasn't been configured yet
1755 */
1756 case NL80211_IFTYPE_AP:
1757 if (sdata->u.ap.beacon)
1758 return -EOPNOTSUPP;
1759 break;
1760 default:
1761 return -EOPNOTSUPP;
1762 }
1763
1764 return ieee80211_request_scan(sdata, req);
1765 }
1766
1767 static int
1768 ieee80211_sched_scan_start(struct wiphy *wiphy,
1769 struct net_device *dev,
1770 struct cfg80211_sched_scan_request *req)
1771 {
1772 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1773
1774 if (!sdata->local->ops->sched_scan_start)
1775 return -EOPNOTSUPP;
1776
1777 return ieee80211_request_sched_scan_start(sdata, req);
1778 }
1779
1780 static int
1781 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1782 {
1783 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1784
1785 if (!sdata->local->ops->sched_scan_stop)
1786 return -EOPNOTSUPP;
1787
1788 return ieee80211_request_sched_scan_stop(sdata);
1789 }
1790
1791 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1792 struct cfg80211_auth_request *req)
1793 {
1794 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1795 }
1796
1797 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1798 struct cfg80211_assoc_request *req)
1799 {
1800 struct ieee80211_local *local = wiphy_priv(wiphy);
1801 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1802
1803 switch (ieee80211_get_channel_mode(local, sdata)) {
1804 case CHAN_MODE_HOPPING:
1805 return -EBUSY;
1806 case CHAN_MODE_FIXED:
1807 if (local->oper_channel == req->bss->channel)
1808 break;
1809 return -EBUSY;
1810 case CHAN_MODE_UNDEFINED:
1811 break;
1812 }
1813
1814 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1815 }
1816
1817 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1818 struct cfg80211_deauth_request *req)
1819 {
1820 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1821 }
1822
1823 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1824 struct cfg80211_disassoc_request *req)
1825 {
1826 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1827 }
1828
1829 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1830 struct cfg80211_ibss_params *params)
1831 {
1832 struct ieee80211_local *local = wiphy_priv(wiphy);
1833 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1834
1835 switch (ieee80211_get_channel_mode(local, sdata)) {
1836 case CHAN_MODE_HOPPING:
1837 return -EBUSY;
1838 case CHAN_MODE_FIXED:
1839 if (!params->channel_fixed)
1840 return -EBUSY;
1841 if (local->oper_channel == params->channel)
1842 break;
1843 return -EBUSY;
1844 case CHAN_MODE_UNDEFINED:
1845 break;
1846 }
1847
1848 return ieee80211_ibss_join(sdata, params);
1849 }
1850
1851 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1852 {
1853 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1854
1855 return ieee80211_ibss_leave(sdata);
1856 }
1857
1858 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1859 {
1860 struct ieee80211_local *local = wiphy_priv(wiphy);
1861 int err;
1862
1863 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1864 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1865
1866 if (err)
1867 return err;
1868 }
1869
1870 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1871 err = drv_set_coverage_class(local, wiphy->coverage_class);
1872
1873 if (err)
1874 return err;
1875 }
1876
1877 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1878 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1879
1880 if (err)
1881 return err;
1882 }
1883
1884 if (changed & WIPHY_PARAM_RETRY_SHORT)
1885 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1886 if (changed & WIPHY_PARAM_RETRY_LONG)
1887 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1888 if (changed &
1889 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1890 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1891
1892 return 0;
1893 }
1894
1895 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1896 enum nl80211_tx_power_setting type, int mbm)
1897 {
1898 struct ieee80211_local *local = wiphy_priv(wiphy);
1899 struct ieee80211_channel *chan = local->hw.conf.channel;
1900 u32 changes = 0;
1901
1902 switch (type) {
1903 case NL80211_TX_POWER_AUTOMATIC:
1904 local->user_power_level = -1;
1905 break;
1906 case NL80211_TX_POWER_LIMITED:
1907 if (mbm < 0 || (mbm % 100))
1908 return -EOPNOTSUPP;
1909 local->user_power_level = MBM_TO_DBM(mbm);
1910 break;
1911 case NL80211_TX_POWER_FIXED:
1912 if (mbm < 0 || (mbm % 100))
1913 return -EOPNOTSUPP;
1914 /* TODO: move to cfg80211 when it knows the channel */
1915 if (MBM_TO_DBM(mbm) > chan->max_power)
1916 return -EINVAL;
1917 local->user_power_level = MBM_TO_DBM(mbm);
1918 break;
1919 }
1920
1921 ieee80211_hw_config(local, changes);
1922
1923 return 0;
1924 }
1925
1926 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1927 {
1928 struct ieee80211_local *local = wiphy_priv(wiphy);
1929
1930 *dbm = local->hw.conf.power_level;
1931
1932 return 0;
1933 }
1934
1935 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1936 const u8 *addr)
1937 {
1938 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1939
1940 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1941
1942 return 0;
1943 }
1944
1945 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1946 {
1947 struct ieee80211_local *local = wiphy_priv(wiphy);
1948
1949 drv_rfkill_poll(local);
1950 }
1951
1952 #ifdef CONFIG_NL80211_TESTMODE
1953 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1954 {
1955 struct ieee80211_local *local = wiphy_priv(wiphy);
1956
1957 if (!local->ops->testmode_cmd)
1958 return -EOPNOTSUPP;
1959
1960 return local->ops->testmode_cmd(&local->hw, data, len);
1961 }
1962
1963 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1964 struct sk_buff *skb,
1965 struct netlink_callback *cb,
1966 void *data, int len)
1967 {
1968 struct ieee80211_local *local = wiphy_priv(wiphy);
1969
1970 if (!local->ops->testmode_dump)
1971 return -EOPNOTSUPP;
1972
1973 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1974 }
1975 #endif
1976
1977 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1978 enum ieee80211_smps_mode smps_mode)
1979 {
1980 const u8 *ap;
1981 enum ieee80211_smps_mode old_req;
1982 int err;
1983
1984 lockdep_assert_held(&sdata->u.mgd.mtx);
1985
1986 old_req = sdata->u.mgd.req_smps;
1987 sdata->u.mgd.req_smps = smps_mode;
1988
1989 if (old_req == smps_mode &&
1990 smps_mode != IEEE80211_SMPS_AUTOMATIC)
1991 return 0;
1992
1993 /*
1994 * If not associated, or current association is not an HT
1995 * association, there's no need to send an action frame.
1996 */
1997 if (!sdata->u.mgd.associated ||
1998 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1999 mutex_lock(&sdata->local->iflist_mtx);
2000 ieee80211_recalc_smps(sdata->local);
2001 mutex_unlock(&sdata->local->iflist_mtx);
2002 return 0;
2003 }
2004
2005 ap = sdata->u.mgd.associated->bssid;
2006
2007 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2008 if (sdata->u.mgd.powersave)
2009 smps_mode = IEEE80211_SMPS_DYNAMIC;
2010 else
2011 smps_mode = IEEE80211_SMPS_OFF;
2012 }
2013
2014 /* send SM PS frame to AP */
2015 err = ieee80211_send_smps_action(sdata, smps_mode,
2016 ap, ap);
2017 if (err)
2018 sdata->u.mgd.req_smps = old_req;
2019
2020 return err;
2021 }
2022
2023 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2024 bool enabled, int timeout)
2025 {
2026 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2027 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2028
2029 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2030 return -EOPNOTSUPP;
2031
2032 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2033 return -EOPNOTSUPP;
2034
2035 if (enabled == sdata->u.mgd.powersave &&
2036 timeout == local->dynamic_ps_forced_timeout)
2037 return 0;
2038
2039 sdata->u.mgd.powersave = enabled;
2040 local->dynamic_ps_forced_timeout = timeout;
2041
2042 /* no change, but if automatic follow powersave */
2043 mutex_lock(&sdata->u.mgd.mtx);
2044 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2045 mutex_unlock(&sdata->u.mgd.mtx);
2046
2047 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2048 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2049
2050 ieee80211_recalc_ps(local, -1);
2051
2052 return 0;
2053 }
2054
2055 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2056 struct net_device *dev,
2057 s32 rssi_thold, u32 rssi_hyst)
2058 {
2059 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2060 struct ieee80211_vif *vif = &sdata->vif;
2061 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2062
2063 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2064 rssi_hyst == bss_conf->cqm_rssi_hyst)
2065 return 0;
2066
2067 bss_conf->cqm_rssi_thold = rssi_thold;
2068 bss_conf->cqm_rssi_hyst = rssi_hyst;
2069
2070 /* tell the driver upon association, unless already associated */
2071 if (sdata->u.mgd.associated &&
2072 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2073 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2074
2075 return 0;
2076 }
2077
2078 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2079 struct net_device *dev,
2080 const u8 *addr,
2081 const struct cfg80211_bitrate_mask *mask)
2082 {
2083 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2084 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2085 int i, ret;
2086
2087 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2088 ret = drv_set_bitrate_mask(local, sdata, mask);
2089 if (ret)
2090 return ret;
2091 }
2092
2093 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2094 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2095 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2096 sizeof(mask->control[i].mcs));
2097 }
2098
2099 return 0;
2100 }
2101
2102 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
2103 struct net_device *dev,
2104 struct ieee80211_channel *chan,
2105 enum nl80211_channel_type chantype,
2106 unsigned int duration, u64 *cookie)
2107 {
2108 int ret;
2109 u32 random_cookie;
2110
2111 lockdep_assert_held(&local->mtx);
2112
2113 if (local->hw_roc_cookie)
2114 return -EBUSY;
2115 /* must be nonzero */
2116 random_cookie = random32() | 1;
2117
2118 *cookie = random_cookie;
2119 local->hw_roc_dev = dev;
2120 local->hw_roc_cookie = random_cookie;
2121 local->hw_roc_channel = chan;
2122 local->hw_roc_channel_type = chantype;
2123 local->hw_roc_duration = duration;
2124 ret = drv_remain_on_channel(local, chan, chantype, duration);
2125 if (ret) {
2126 local->hw_roc_channel = NULL;
2127 local->hw_roc_cookie = 0;
2128 }
2129
2130 return ret;
2131 }
2132
2133 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2134 struct net_device *dev,
2135 struct ieee80211_channel *chan,
2136 enum nl80211_channel_type channel_type,
2137 unsigned int duration,
2138 u64 *cookie)
2139 {
2140 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2141 struct ieee80211_local *local = sdata->local;
2142
2143 if (local->ops->remain_on_channel) {
2144 int ret;
2145
2146 mutex_lock(&local->mtx);
2147 ret = ieee80211_remain_on_channel_hw(local, dev,
2148 chan, channel_type,
2149 duration, cookie);
2150 local->hw_roc_for_tx = false;
2151 mutex_unlock(&local->mtx);
2152
2153 return ret;
2154 }
2155
2156 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
2157 duration, cookie);
2158 }
2159
2160 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
2161 u64 cookie)
2162 {
2163 int ret;
2164
2165 lockdep_assert_held(&local->mtx);
2166
2167 if (local->hw_roc_cookie != cookie)
2168 return -ENOENT;
2169
2170 ret = drv_cancel_remain_on_channel(local);
2171 if (ret)
2172 return ret;
2173
2174 local->hw_roc_cookie = 0;
2175 local->hw_roc_channel = NULL;
2176
2177 ieee80211_recalc_idle(local);
2178
2179 return 0;
2180 }
2181
2182 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2183 struct net_device *dev,
2184 u64 cookie)
2185 {
2186 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2187 struct ieee80211_local *local = sdata->local;
2188
2189 if (local->ops->cancel_remain_on_channel) {
2190 int ret;
2191
2192 mutex_lock(&local->mtx);
2193 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2194 mutex_unlock(&local->mtx);
2195
2196 return ret;
2197 }
2198
2199 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2200 }
2201
2202 static enum work_done_result
2203 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2204 {
2205 /*
2206 * Use the data embedded in the work struct for reporting
2207 * here so if the driver mangled the SKB before dropping
2208 * it (which is the only way we really should get here)
2209 * then we don't report mangled data.
2210 *
2211 * If there was no wait time, then by the time we get here
2212 * the driver will likely not have reported the status yet,
2213 * so in that case userspace will have to deal with it.
2214 */
2215
2216 if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2217 cfg80211_mgmt_tx_status(wk->sdata->dev,
2218 (unsigned long) wk->offchan_tx.frame,
2219 wk->data, wk->data_len, false, GFP_KERNEL);
2220
2221 return WORK_DONE_DESTROY;
2222 }
2223
2224 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2225 struct ieee80211_channel *chan, bool offchan,
2226 enum nl80211_channel_type channel_type,
2227 bool channel_type_valid, unsigned int wait,
2228 const u8 *buf, size_t len, bool no_cck,
2229 bool dont_wait_for_ack, u64 *cookie)
2230 {
2231 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2232 struct ieee80211_local *local = sdata->local;
2233 struct sk_buff *skb;
2234 struct sta_info *sta;
2235 struct ieee80211_work *wk;
2236 const struct ieee80211_mgmt *mgmt = (void *)buf;
2237 u32 flags;
2238 bool is_offchan = false;
2239
2240 if (dont_wait_for_ack)
2241 flags = IEEE80211_TX_CTL_NO_ACK;
2242 else
2243 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2244 IEEE80211_TX_CTL_REQ_TX_STATUS;
2245
2246 /* Check that we are on the requested channel for transmission */
2247 if (chan != local->tmp_channel &&
2248 chan != local->oper_channel)
2249 is_offchan = true;
2250 if (channel_type_valid &&
2251 (channel_type != local->tmp_channel_type &&
2252 channel_type != local->_oper_channel_type))
2253 is_offchan = true;
2254
2255 if (chan == local->hw_roc_channel) {
2256 /* TODO: check channel type? */
2257 is_offchan = false;
2258 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2259 }
2260
2261 if (no_cck)
2262 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2263
2264 if (is_offchan && !offchan)
2265 return -EBUSY;
2266
2267 switch (sdata->vif.type) {
2268 case NL80211_IFTYPE_ADHOC:
2269 case NL80211_IFTYPE_AP:
2270 case NL80211_IFTYPE_AP_VLAN:
2271 case NL80211_IFTYPE_P2P_GO:
2272 case NL80211_IFTYPE_MESH_POINT:
2273 if (!ieee80211_is_action(mgmt->frame_control) ||
2274 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2275 break;
2276 rcu_read_lock();
2277 sta = sta_info_get(sdata, mgmt->da);
2278 rcu_read_unlock();
2279 if (!sta)
2280 return -ENOLINK;
2281 break;
2282 case NL80211_IFTYPE_STATION:
2283 case NL80211_IFTYPE_P2P_CLIENT:
2284 break;
2285 default:
2286 return -EOPNOTSUPP;
2287 }
2288
2289 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2290 if (!skb)
2291 return -ENOMEM;
2292 skb_reserve(skb, local->hw.extra_tx_headroom);
2293
2294 memcpy(skb_put(skb, len), buf, len);
2295
2296 IEEE80211_SKB_CB(skb)->flags = flags;
2297
2298 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL &&
2299 flags & IEEE80211_TX_CTL_TX_OFFCHAN)
2300 IEEE80211_SKB_CB(skb)->hw_queue =
2301 local->hw.offchannel_tx_hw_queue;
2302
2303 skb->dev = sdata->dev;
2304
2305 *cookie = (unsigned long) skb;
2306
2307 if (is_offchan && local->ops->remain_on_channel) {
2308 unsigned int duration;
2309 int ret;
2310
2311 mutex_lock(&local->mtx);
2312 /*
2313 * If the duration is zero, then the driver
2314 * wouldn't actually do anything. Set it to
2315 * 100 for now.
2316 *
2317 * TODO: cancel the off-channel operation
2318 * when we get the SKB's TX status and
2319 * the wait time was zero before.
2320 */
2321 duration = 100;
2322 if (wait)
2323 duration = wait;
2324 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2325 channel_type,
2326 duration, cookie);
2327 if (ret) {
2328 kfree_skb(skb);
2329 mutex_unlock(&local->mtx);
2330 return ret;
2331 }
2332
2333 local->hw_roc_for_tx = true;
2334 local->hw_roc_duration = wait;
2335
2336 /*
2337 * queue up frame for transmission after
2338 * ieee80211_ready_on_channel call
2339 */
2340
2341 /* modify cookie to prevent API mismatches */
2342 *cookie ^= 2;
2343 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2344 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2345 IEEE80211_SKB_CB(skb)->hw_queue =
2346 local->hw.offchannel_tx_hw_queue;
2347 local->hw_roc_skb = skb;
2348 local->hw_roc_skb_for_status = skb;
2349 mutex_unlock(&local->mtx);
2350
2351 return 0;
2352 }
2353
2354 /*
2355 * Can transmit right away if the channel was the
2356 * right one and there's no wait involved... If a
2357 * wait is involved, we might otherwise not be on
2358 * the right channel for long enough!
2359 */
2360 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2361 ieee80211_tx_skb(sdata, skb);
2362 return 0;
2363 }
2364
2365 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2366 if (!wk) {
2367 kfree_skb(skb);
2368 return -ENOMEM;
2369 }
2370
2371 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2372 wk->chan = chan;
2373 wk->chan_type = channel_type;
2374 wk->sdata = sdata;
2375 wk->done = ieee80211_offchan_tx_done;
2376 wk->offchan_tx.frame = skb;
2377 wk->offchan_tx.wait = wait;
2378 wk->data_len = len;
2379 memcpy(wk->data, buf, len);
2380
2381 ieee80211_add_work(wk);
2382 return 0;
2383 }
2384
2385 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2386 struct net_device *dev,
2387 u64 cookie)
2388 {
2389 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2390 struct ieee80211_local *local = sdata->local;
2391 struct ieee80211_work *wk;
2392 int ret = -ENOENT;
2393
2394 mutex_lock(&local->mtx);
2395
2396 if (local->ops->cancel_remain_on_channel) {
2397 cookie ^= 2;
2398 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2399
2400 if (ret == 0) {
2401 kfree_skb(local->hw_roc_skb);
2402 local->hw_roc_skb = NULL;
2403 local->hw_roc_skb_for_status = NULL;
2404 }
2405
2406 mutex_unlock(&local->mtx);
2407
2408 return ret;
2409 }
2410
2411 list_for_each_entry(wk, &local->work_list, list) {
2412 if (wk->sdata != sdata)
2413 continue;
2414
2415 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2416 continue;
2417
2418 if (cookie != (unsigned long) wk->offchan_tx.frame)
2419 continue;
2420
2421 wk->timeout = jiffies;
2422
2423 ieee80211_queue_work(&local->hw, &local->work_work);
2424 ret = 0;
2425 break;
2426 }
2427 mutex_unlock(&local->mtx);
2428
2429 return ret;
2430 }
2431
2432 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2433 struct net_device *dev,
2434 u16 frame_type, bool reg)
2435 {
2436 struct ieee80211_local *local = wiphy_priv(wiphy);
2437
2438 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2439 return;
2440
2441 if (reg)
2442 local->probe_req_reg++;
2443 else
2444 local->probe_req_reg--;
2445
2446 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2447 }
2448
2449 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2450 {
2451 struct ieee80211_local *local = wiphy_priv(wiphy);
2452
2453 if (local->started)
2454 return -EOPNOTSUPP;
2455
2456 return drv_set_antenna(local, tx_ant, rx_ant);
2457 }
2458
2459 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2460 {
2461 struct ieee80211_local *local = wiphy_priv(wiphy);
2462
2463 return drv_get_antenna(local, tx_ant, rx_ant);
2464 }
2465
2466 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2467 {
2468 struct ieee80211_local *local = wiphy_priv(wiphy);
2469
2470 return drv_set_ringparam(local, tx, rx);
2471 }
2472
2473 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2474 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2475 {
2476 struct ieee80211_local *local = wiphy_priv(wiphy);
2477
2478 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2479 }
2480
2481 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2482 struct net_device *dev,
2483 struct cfg80211_gtk_rekey_data *data)
2484 {
2485 struct ieee80211_local *local = wiphy_priv(wiphy);
2486 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2487
2488 if (!local->ops->set_rekey_data)
2489 return -EOPNOTSUPP;
2490
2491 drv_set_rekey_data(local, sdata, data);
2492
2493 return 0;
2494 }
2495
2496 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2497 {
2498 u8 *pos = (void *)skb_put(skb, 7);
2499
2500 *pos++ = WLAN_EID_EXT_CAPABILITY;
2501 *pos++ = 5; /* len */
2502 *pos++ = 0x0;
2503 *pos++ = 0x0;
2504 *pos++ = 0x0;
2505 *pos++ = 0x0;
2506 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2507 }
2508
2509 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2510 {
2511 struct ieee80211_local *local = sdata->local;
2512 u16 capab;
2513
2514 capab = 0;
2515 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2516 return capab;
2517
2518 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2519 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2520 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2521 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2522
2523 return capab;
2524 }
2525
2526 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2527 u8 *peer, u8 *bssid)
2528 {
2529 struct ieee80211_tdls_lnkie *lnkid;
2530
2531 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2532
2533 lnkid->ie_type = WLAN_EID_LINK_ID;
2534 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2535
2536 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2537 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2538 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2539 }
2540
2541 static int
2542 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2543 u8 *peer, u8 action_code, u8 dialog_token,
2544 u16 status_code, struct sk_buff *skb)
2545 {
2546 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2547 struct ieee80211_tdls_data *tf;
2548
2549 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2550
2551 memcpy(tf->da, peer, ETH_ALEN);
2552 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2553 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2554 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2555
2556 switch (action_code) {
2557 case WLAN_TDLS_SETUP_REQUEST:
2558 tf->category = WLAN_CATEGORY_TDLS;
2559 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2560
2561 skb_put(skb, sizeof(tf->u.setup_req));
2562 tf->u.setup_req.dialog_token = dialog_token;
2563 tf->u.setup_req.capability =
2564 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2565
2566 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2567 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2568 ieee80211_tdls_add_ext_capab(skb);
2569 break;
2570 case WLAN_TDLS_SETUP_RESPONSE:
2571 tf->category = WLAN_CATEGORY_TDLS;
2572 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2573
2574 skb_put(skb, sizeof(tf->u.setup_resp));
2575 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2576 tf->u.setup_resp.dialog_token = dialog_token;
2577 tf->u.setup_resp.capability =
2578 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2579
2580 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2581 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2582 ieee80211_tdls_add_ext_capab(skb);
2583 break;
2584 case WLAN_TDLS_SETUP_CONFIRM:
2585 tf->category = WLAN_CATEGORY_TDLS;
2586 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2587
2588 skb_put(skb, sizeof(tf->u.setup_cfm));
2589 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2590 tf->u.setup_cfm.dialog_token = dialog_token;
2591 break;
2592 case WLAN_TDLS_TEARDOWN:
2593 tf->category = WLAN_CATEGORY_TDLS;
2594 tf->action_code = WLAN_TDLS_TEARDOWN;
2595
2596 skb_put(skb, sizeof(tf->u.teardown));
2597 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2598 break;
2599 case WLAN_TDLS_DISCOVERY_REQUEST:
2600 tf->category = WLAN_CATEGORY_TDLS;
2601 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2602
2603 skb_put(skb, sizeof(tf->u.discover_req));
2604 tf->u.discover_req.dialog_token = dialog_token;
2605 break;
2606 default:
2607 return -EINVAL;
2608 }
2609
2610 return 0;
2611 }
2612
2613 static int
2614 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2615 u8 *peer, u8 action_code, u8 dialog_token,
2616 u16 status_code, struct sk_buff *skb)
2617 {
2618 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2619 struct ieee80211_mgmt *mgmt;
2620
2621 mgmt = (void *)skb_put(skb, 24);
2622 memset(mgmt, 0, 24);
2623 memcpy(mgmt->da, peer, ETH_ALEN);
2624 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2625 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2626
2627 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2628 IEEE80211_STYPE_ACTION);
2629
2630 switch (action_code) {
2631 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2632 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2633 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2634 mgmt->u.action.u.tdls_discover_resp.action_code =
2635 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2636 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2637 dialog_token;
2638 mgmt->u.action.u.tdls_discover_resp.capability =
2639 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2640
2641 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2642 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2643 ieee80211_tdls_add_ext_capab(skb);
2644 break;
2645 default:
2646 return -EINVAL;
2647 }
2648
2649 return 0;
2650 }
2651
2652 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2653 u8 *peer, u8 action_code, u8 dialog_token,
2654 u16 status_code, const u8 *extra_ies,
2655 size_t extra_ies_len)
2656 {
2657 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2658 struct ieee80211_local *local = sdata->local;
2659 struct ieee80211_tx_info *info;
2660 struct sk_buff *skb = NULL;
2661 bool send_direct;
2662 int ret;
2663
2664 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2665 return -ENOTSUPP;
2666
2667 /* make sure we are in managed mode, and associated */
2668 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2669 !sdata->u.mgd.associated)
2670 return -EINVAL;
2671
2672 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2673 pr_debug("TDLS mgmt action %d peer %pM\n", action_code, peer);
2674 #endif
2675
2676 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2677 max(sizeof(struct ieee80211_mgmt),
2678 sizeof(struct ieee80211_tdls_data)) +
2679 50 + /* supported rates */
2680 7 + /* ext capab */
2681 extra_ies_len +
2682 sizeof(struct ieee80211_tdls_lnkie));
2683 if (!skb)
2684 return -ENOMEM;
2685
2686 info = IEEE80211_SKB_CB(skb);
2687 skb_reserve(skb, local->hw.extra_tx_headroom);
2688
2689 switch (action_code) {
2690 case WLAN_TDLS_SETUP_REQUEST:
2691 case WLAN_TDLS_SETUP_RESPONSE:
2692 case WLAN_TDLS_SETUP_CONFIRM:
2693 case WLAN_TDLS_TEARDOWN:
2694 case WLAN_TDLS_DISCOVERY_REQUEST:
2695 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2696 action_code, dialog_token,
2697 status_code, skb);
2698 send_direct = false;
2699 break;
2700 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2701 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2702 dialog_token, status_code,
2703 skb);
2704 send_direct = true;
2705 break;
2706 default:
2707 ret = -ENOTSUPP;
2708 break;
2709 }
2710
2711 if (ret < 0)
2712 goto fail;
2713
2714 if (extra_ies_len)
2715 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2716
2717 /* the TDLS link IE is always added last */
2718 switch (action_code) {
2719 case WLAN_TDLS_SETUP_REQUEST:
2720 case WLAN_TDLS_SETUP_CONFIRM:
2721 case WLAN_TDLS_TEARDOWN:
2722 case WLAN_TDLS_DISCOVERY_REQUEST:
2723 /* we are the initiator */
2724 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2725 sdata->u.mgd.bssid);
2726 break;
2727 case WLAN_TDLS_SETUP_RESPONSE:
2728 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2729 /* we are the responder */
2730 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2731 sdata->u.mgd.bssid);
2732 break;
2733 default:
2734 ret = -ENOTSUPP;
2735 goto fail;
2736 }
2737
2738 if (send_direct) {
2739 ieee80211_tx_skb(sdata, skb);
2740 return 0;
2741 }
2742
2743 /*
2744 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2745 * we should default to AC_VI.
2746 */
2747 switch (action_code) {
2748 case WLAN_TDLS_SETUP_REQUEST:
2749 case WLAN_TDLS_SETUP_RESPONSE:
2750 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2751 skb->priority = 2;
2752 break;
2753 default:
2754 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2755 skb->priority = 5;
2756 break;
2757 }
2758
2759 /* disable bottom halves when entering the Tx path */
2760 local_bh_disable();
2761 ret = ieee80211_subif_start_xmit(skb, dev);
2762 local_bh_enable();
2763
2764 return ret;
2765
2766 fail:
2767 dev_kfree_skb(skb);
2768 return ret;
2769 }
2770
2771 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2772 u8 *peer, enum nl80211_tdls_operation oper)
2773 {
2774 struct sta_info *sta;
2775 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2776
2777 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2778 return -ENOTSUPP;
2779
2780 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2781 return -EINVAL;
2782
2783 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2784 pr_debug("TDLS oper %d peer %pM\n", oper, peer);
2785 #endif
2786
2787 switch (oper) {
2788 case NL80211_TDLS_ENABLE_LINK:
2789 rcu_read_lock();
2790 sta = sta_info_get(sdata, peer);
2791 if (!sta) {
2792 rcu_read_unlock();
2793 return -ENOLINK;
2794 }
2795
2796 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2797 rcu_read_unlock();
2798 break;
2799 case NL80211_TDLS_DISABLE_LINK:
2800 return sta_info_destroy_addr(sdata, peer);
2801 case NL80211_TDLS_TEARDOWN:
2802 case NL80211_TDLS_SETUP:
2803 case NL80211_TDLS_DISCOVERY_REQ:
2804 /* We don't support in-driver setup/teardown/discovery */
2805 return -ENOTSUPP;
2806 default:
2807 return -ENOTSUPP;
2808 }
2809
2810 return 0;
2811 }
2812
2813 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2814 const u8 *peer, u64 *cookie)
2815 {
2816 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2817 struct ieee80211_local *local = sdata->local;
2818 struct ieee80211_qos_hdr *nullfunc;
2819 struct sk_buff *skb;
2820 int size = sizeof(*nullfunc);
2821 __le16 fc;
2822 bool qos;
2823 struct ieee80211_tx_info *info;
2824 struct sta_info *sta;
2825
2826 rcu_read_lock();
2827 sta = sta_info_get(sdata, peer);
2828 if (sta) {
2829 qos = test_sta_flag(sta, WLAN_STA_WME);
2830 rcu_read_unlock();
2831 } else {
2832 rcu_read_unlock();
2833 return -ENOLINK;
2834 }
2835
2836 if (qos) {
2837 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2838 IEEE80211_STYPE_QOS_NULLFUNC |
2839 IEEE80211_FCTL_FROMDS);
2840 } else {
2841 size -= 2;
2842 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2843 IEEE80211_STYPE_NULLFUNC |
2844 IEEE80211_FCTL_FROMDS);
2845 }
2846
2847 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2848 if (!skb)
2849 return -ENOMEM;
2850
2851 skb->dev = dev;
2852
2853 skb_reserve(skb, local->hw.extra_tx_headroom);
2854
2855 nullfunc = (void *) skb_put(skb, size);
2856 nullfunc->frame_control = fc;
2857 nullfunc->duration_id = 0;
2858 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2859 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2860 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2861 nullfunc->seq_ctrl = 0;
2862
2863 info = IEEE80211_SKB_CB(skb);
2864
2865 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2866 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2867
2868 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2869 skb->priority = 7;
2870 if (qos)
2871 nullfunc->qos_ctrl = cpu_to_le16(7);
2872
2873 local_bh_disable();
2874 ieee80211_xmit(sdata, skb);
2875 local_bh_enable();
2876
2877 *cookie = (unsigned long) skb;
2878 return 0;
2879 }
2880
2881 static struct ieee80211_channel *
2882 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2883 enum nl80211_channel_type *type)
2884 {
2885 struct ieee80211_local *local = wiphy_priv(wiphy);
2886
2887 *type = local->_oper_channel_type;
2888 return local->oper_channel;
2889 }
2890
2891 #ifdef CONFIG_PM
2892 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2893 {
2894 drv_set_wakeup(wiphy_priv(wiphy), enabled);
2895 }
2896 #endif
2897
2898 struct cfg80211_ops mac80211_config_ops = {
2899 .add_virtual_intf = ieee80211_add_iface,
2900 .del_virtual_intf = ieee80211_del_iface,
2901 .change_virtual_intf = ieee80211_change_iface,
2902 .add_key = ieee80211_add_key,
2903 .del_key = ieee80211_del_key,
2904 .get_key = ieee80211_get_key,
2905 .set_default_key = ieee80211_config_default_key,
2906 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2907 .start_ap = ieee80211_start_ap,
2908 .change_beacon = ieee80211_change_beacon,
2909 .stop_ap = ieee80211_stop_ap,
2910 .add_station = ieee80211_add_station,
2911 .del_station = ieee80211_del_station,
2912 .change_station = ieee80211_change_station,
2913 .get_station = ieee80211_get_station,
2914 .dump_station = ieee80211_dump_station,
2915 .dump_survey = ieee80211_dump_survey,
2916 #ifdef CONFIG_MAC80211_MESH
2917 .add_mpath = ieee80211_add_mpath,
2918 .del_mpath = ieee80211_del_mpath,
2919 .change_mpath = ieee80211_change_mpath,
2920 .get_mpath = ieee80211_get_mpath,
2921 .dump_mpath = ieee80211_dump_mpath,
2922 .update_mesh_config = ieee80211_update_mesh_config,
2923 .get_mesh_config = ieee80211_get_mesh_config,
2924 .join_mesh = ieee80211_join_mesh,
2925 .leave_mesh = ieee80211_leave_mesh,
2926 #endif
2927 .change_bss = ieee80211_change_bss,
2928 .set_txq_params = ieee80211_set_txq_params,
2929 .set_channel = ieee80211_set_channel,
2930 .suspend = ieee80211_suspend,
2931 .resume = ieee80211_resume,
2932 .scan = ieee80211_scan,
2933 .sched_scan_start = ieee80211_sched_scan_start,
2934 .sched_scan_stop = ieee80211_sched_scan_stop,
2935 .auth = ieee80211_auth,
2936 .assoc = ieee80211_assoc,
2937 .deauth = ieee80211_deauth,
2938 .disassoc = ieee80211_disassoc,
2939 .join_ibss = ieee80211_join_ibss,
2940 .leave_ibss = ieee80211_leave_ibss,
2941 .set_wiphy_params = ieee80211_set_wiphy_params,
2942 .set_tx_power = ieee80211_set_tx_power,
2943 .get_tx_power = ieee80211_get_tx_power,
2944 .set_wds_peer = ieee80211_set_wds_peer,
2945 .rfkill_poll = ieee80211_rfkill_poll,
2946 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2947 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2948 .set_power_mgmt = ieee80211_set_power_mgmt,
2949 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2950 .remain_on_channel = ieee80211_remain_on_channel,
2951 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2952 .mgmt_tx = ieee80211_mgmt_tx,
2953 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2954 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2955 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2956 .set_antenna = ieee80211_set_antenna,
2957 .get_antenna = ieee80211_get_antenna,
2958 .set_ringparam = ieee80211_set_ringparam,
2959 .get_ringparam = ieee80211_get_ringparam,
2960 .set_rekey_data = ieee80211_set_rekey_data,
2961 .tdls_oper = ieee80211_tdls_oper,
2962 .tdls_mgmt = ieee80211_tdls_mgmt,
2963 .probe_client = ieee80211_probe_client,
2964 .get_channel = ieee80211_wiphy_get_channel,
2965 .set_noack_map = ieee80211_set_noack_map,
2966 #ifdef CONFIG_PM
2967 .set_wakeup = ieee80211_set_wakeup,
2968 #endif
2969 .get_et_sset_count = ieee80211_get_et_sset_count,
2970 .get_et_stats = ieee80211_get_et_stats,
2971 .get_et_strings = ieee80211_get_et_strings,
2972 };
Linux kernel - Deliverables
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