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{nl,cfg,mac}80211: implement dot11MeshHWMPconfirmationInterval
[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 (!sdata && local->_oper_channel_type != channel_type))
694 return -EBUSY;
695 if (!sdata && local->_oper_channel_type == channel_type)
696 return 0;
697 break;
698 case CHAN_MODE_UNDEFINED:
699 break;
700 }
701
702 if (!ieee80211_set_channel_type(local, sdata, channel_type))
703 return -EBUSY;
704
705 local->oper_channel = chan;
706
707 /* auto-detects changes */
708 ieee80211_hw_config(local, 0);
709
710 return 0;
711 }
712
713 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
714 struct ieee80211_channel *chan,
715 enum nl80211_channel_type channel_type)
716 {
717 return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
718 }
719
720 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
721 const u8 *resp, size_t resp_len)
722 {
723 struct sk_buff *new, *old;
724
725 if (!resp || !resp_len)
726 return 1;
727
728 old = rtnl_dereference(sdata->u.ap.probe_resp);
729
730 new = dev_alloc_skb(resp_len);
731 if (!new)
732 return -ENOMEM;
733
734 memcpy(skb_put(new, resp_len), resp, resp_len);
735
736 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
737 if (old) {
738 /* TODO: use call_rcu() */
739 synchronize_rcu();
740 dev_kfree_skb(old);
741 }
742
743 return 0;
744 }
745
746 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
747 struct cfg80211_beacon_data *params)
748 {
749 struct beacon_data *new, *old;
750 int new_head_len, new_tail_len;
751 int size, err;
752 u32 changed = BSS_CHANGED_BEACON;
753
754 old = rtnl_dereference(sdata->u.ap.beacon);
755
756 /* Need to have a beacon head if we don't have one yet */
757 if (!params->head && !old)
758 return -EINVAL;
759
760 /* new or old head? */
761 if (params->head)
762 new_head_len = params->head_len;
763 else
764 new_head_len = old->head_len;
765
766 /* new or old tail? */
767 if (params->tail || !old)
768 /* params->tail_len will be zero for !params->tail */
769 new_tail_len = params->tail_len;
770 else
771 new_tail_len = old->tail_len;
772
773 size = sizeof(*new) + new_head_len + new_tail_len;
774
775 new = kzalloc(size, GFP_KERNEL);
776 if (!new)
777 return -ENOMEM;
778
779 /* start filling the new info now */
780
781 /*
782 * pointers go into the block we allocated,
783 * memory is | beacon_data | head | tail |
784 */
785 new->head = ((u8 *) new) + sizeof(*new);
786 new->tail = new->head + new_head_len;
787 new->head_len = new_head_len;
788 new->tail_len = new_tail_len;
789
790 /* copy in head */
791 if (params->head)
792 memcpy(new->head, params->head, new_head_len);
793 else
794 memcpy(new->head, old->head, new_head_len);
795
796 /* copy in optional tail */
797 if (params->tail)
798 memcpy(new->tail, params->tail, new_tail_len);
799 else
800 if (old)
801 memcpy(new->tail, old->tail, new_tail_len);
802
803 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
804 params->probe_resp_len);
805 if (err < 0)
806 return err;
807 if (err == 0)
808 changed |= BSS_CHANGED_AP_PROBE_RESP;
809
810 rcu_assign_pointer(sdata->u.ap.beacon, new);
811
812 if (old)
813 kfree_rcu(old, rcu_head);
814
815 return changed;
816 }
817
818 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
819 struct cfg80211_ap_settings *params)
820 {
821 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
822 struct beacon_data *old;
823 struct ieee80211_sub_if_data *vlan;
824 u32 changed = BSS_CHANGED_BEACON_INT |
825 BSS_CHANGED_BEACON_ENABLED |
826 BSS_CHANGED_BEACON |
827 BSS_CHANGED_SSID;
828 int err;
829
830 old = rtnl_dereference(sdata->u.ap.beacon);
831 if (old)
832 return -EALREADY;
833
834 err = ieee80211_set_channel(wiphy, dev, params->channel,
835 params->channel_type);
836 if (err)
837 return err;
838
839 /*
840 * Apply control port protocol, this allows us to
841 * not encrypt dynamic WEP control frames.
842 */
843 sdata->control_port_protocol = params->crypto.control_port_ethertype;
844 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
845 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
846 vlan->control_port_protocol =
847 params->crypto.control_port_ethertype;
848 vlan->control_port_no_encrypt =
849 params->crypto.control_port_no_encrypt;
850 }
851
852 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
853 sdata->vif.bss_conf.dtim_period = params->dtim_period;
854
855 sdata->vif.bss_conf.ssid_len = params->ssid_len;
856 if (params->ssid_len)
857 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
858 params->ssid_len);
859 sdata->vif.bss_conf.hidden_ssid =
860 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
861
862 err = ieee80211_assign_beacon(sdata, &params->beacon);
863 if (err < 0)
864 return err;
865 changed |= err;
866
867 ieee80211_bss_info_change_notify(sdata, changed);
868
869 netif_carrier_on(dev);
870 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
871 netif_carrier_on(vlan->dev);
872
873 return 0;
874 }
875
876 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
877 struct cfg80211_beacon_data *params)
878 {
879 struct ieee80211_sub_if_data *sdata;
880 struct beacon_data *old;
881 int err;
882
883 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
884
885 old = rtnl_dereference(sdata->u.ap.beacon);
886 if (!old)
887 return -ENOENT;
888
889 err = ieee80211_assign_beacon(sdata, params);
890 if (err < 0)
891 return err;
892 ieee80211_bss_info_change_notify(sdata, err);
893 return 0;
894 }
895
896 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
897 {
898 struct ieee80211_sub_if_data *sdata, *vlan;
899 struct beacon_data *old;
900
901 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
902
903 old = rtnl_dereference(sdata->u.ap.beacon);
904 if (!old)
905 return -ENOENT;
906
907 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
908 netif_carrier_off(vlan->dev);
909 netif_carrier_off(dev);
910
911 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
912
913 kfree_rcu(old, rcu_head);
914
915 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
916
917 return 0;
918 }
919
920 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
921 struct iapp_layer2_update {
922 u8 da[ETH_ALEN]; /* broadcast */
923 u8 sa[ETH_ALEN]; /* STA addr */
924 __be16 len; /* 6 */
925 u8 dsap; /* 0 */
926 u8 ssap; /* 0 */
927 u8 control;
928 u8 xid_info[3];
929 } __packed;
930
931 static void ieee80211_send_layer2_update(struct sta_info *sta)
932 {
933 struct iapp_layer2_update *msg;
934 struct sk_buff *skb;
935
936 /* Send Level 2 Update Frame to update forwarding tables in layer 2
937 * bridge devices */
938
939 skb = dev_alloc_skb(sizeof(*msg));
940 if (!skb)
941 return;
942 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
943
944 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
945 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
946
947 memset(msg->da, 0xff, ETH_ALEN);
948 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
949 msg->len = htons(6);
950 msg->dsap = 0;
951 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
952 msg->control = 0xaf; /* XID response lsb.1111F101.
953 * F=0 (no poll command; unsolicited frame) */
954 msg->xid_info[0] = 0x81; /* XID format identifier */
955 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
956 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
957
958 skb->dev = sta->sdata->dev;
959 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
960 memset(skb->cb, 0, sizeof(skb->cb));
961 netif_rx_ni(skb);
962 }
963
964 static int sta_apply_parameters(struct ieee80211_local *local,
965 struct sta_info *sta,
966 struct station_parameters *params)
967 {
968 int ret = 0;
969 u32 rates;
970 int i, j;
971 struct ieee80211_supported_band *sband;
972 struct ieee80211_sub_if_data *sdata = sta->sdata;
973 u32 mask, set;
974
975 sband = local->hw.wiphy->bands[local->oper_channel->band];
976
977 mask = params->sta_flags_mask;
978 set = params->sta_flags_set;
979
980 /*
981 * In mesh mode, we can clear AUTHENTICATED flag but must
982 * also make ASSOCIATED follow appropriately for the driver
983 * API. See also below, after AUTHORIZED changes.
984 */
985 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
986 /* cfg80211 should not allow this in non-mesh modes */
987 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
988 return -EINVAL;
989
990 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
991 !test_sta_flag(sta, WLAN_STA_AUTH)) {
992 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
993 if (ret)
994 return ret;
995 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
996 if (ret)
997 return ret;
998 }
999 }
1000
1001 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1002 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1003 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1004 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1005 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1006 if (ret)
1007 return ret;
1008 }
1009
1010 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1011 /* cfg80211 should not allow this in non-mesh modes */
1012 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1013 return -EINVAL;
1014
1015 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1016 test_sta_flag(sta, WLAN_STA_AUTH)) {
1017 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1018 if (ret)
1019 return ret;
1020 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1021 if (ret)
1022 return ret;
1023 }
1024 }
1025
1026
1027 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1028 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1029 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1030 else
1031 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1032 }
1033
1034 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1035 if (set & BIT(NL80211_STA_FLAG_WME)) {
1036 set_sta_flag(sta, WLAN_STA_WME);
1037 sta->sta.wme = true;
1038 } else {
1039 clear_sta_flag(sta, WLAN_STA_WME);
1040 sta->sta.wme = false;
1041 }
1042 }
1043
1044 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1045 if (set & BIT(NL80211_STA_FLAG_MFP))
1046 set_sta_flag(sta, WLAN_STA_MFP);
1047 else
1048 clear_sta_flag(sta, WLAN_STA_MFP);
1049 }
1050
1051 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1052 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1053 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1054 else
1055 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1056 }
1057
1058 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1059 sta->sta.uapsd_queues = params->uapsd_queues;
1060 sta->sta.max_sp = params->max_sp;
1061 }
1062
1063 /*
1064 * cfg80211 validates this (1-2007) and allows setting the AID
1065 * only when creating a new station entry
1066 */
1067 if (params->aid)
1068 sta->sta.aid = params->aid;
1069
1070 /*
1071 * FIXME: updating the following information is racy when this
1072 * function is called from ieee80211_change_station().
1073 * However, all this information should be static so
1074 * maybe we should just reject attemps to change it.
1075 */
1076
1077 if (params->listen_interval >= 0)
1078 sta->listen_interval = params->listen_interval;
1079
1080 if (params->supported_rates) {
1081 rates = 0;
1082
1083 for (i = 0; i < params->supported_rates_len; i++) {
1084 int rate = (params->supported_rates[i] & 0x7f) * 5;
1085 for (j = 0; j < sband->n_bitrates; j++) {
1086 if (sband->bitrates[j].bitrate == rate)
1087 rates |= BIT(j);
1088 }
1089 }
1090 sta->sta.supp_rates[local->oper_channel->band] = rates;
1091 }
1092
1093 if (params->ht_capa)
1094 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1095 params->ht_capa,
1096 &sta->sta.ht_cap);
1097
1098 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1099 #ifdef CONFIG_MAC80211_MESH
1100 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1101 switch (params->plink_state) {
1102 case NL80211_PLINK_LISTEN:
1103 case NL80211_PLINK_ESTAB:
1104 case NL80211_PLINK_BLOCKED:
1105 sta->plink_state = params->plink_state;
1106 break;
1107 default:
1108 /* nothing */
1109 break;
1110 }
1111 else
1112 switch (params->plink_action) {
1113 case PLINK_ACTION_OPEN:
1114 mesh_plink_open(sta);
1115 break;
1116 case PLINK_ACTION_BLOCK:
1117 mesh_plink_block(sta);
1118 break;
1119 }
1120 #endif
1121 }
1122
1123 return 0;
1124 }
1125
1126 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1127 u8 *mac, struct station_parameters *params)
1128 {
1129 struct ieee80211_local *local = wiphy_priv(wiphy);
1130 struct sta_info *sta;
1131 struct ieee80211_sub_if_data *sdata;
1132 int err;
1133 int layer2_update;
1134
1135 if (params->vlan) {
1136 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1137
1138 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1139 sdata->vif.type != NL80211_IFTYPE_AP)
1140 return -EINVAL;
1141 } else
1142 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1143
1144 if (ether_addr_equal(mac, sdata->vif.addr))
1145 return -EINVAL;
1146
1147 if (is_multicast_ether_addr(mac))
1148 return -EINVAL;
1149
1150 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1151 if (!sta)
1152 return -ENOMEM;
1153
1154 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1155 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1156
1157 err = sta_apply_parameters(local, sta, params);
1158 if (err) {
1159 sta_info_free(local, sta);
1160 return err;
1161 }
1162
1163 /*
1164 * for TDLS, rate control should be initialized only when supported
1165 * rates are known.
1166 */
1167 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1168 rate_control_rate_init(sta);
1169
1170 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1171 sdata->vif.type == NL80211_IFTYPE_AP;
1172
1173 err = sta_info_insert_rcu(sta);
1174 if (err) {
1175 rcu_read_unlock();
1176 return err;
1177 }
1178
1179 if (layer2_update)
1180 ieee80211_send_layer2_update(sta);
1181
1182 rcu_read_unlock();
1183
1184 return 0;
1185 }
1186
1187 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1188 u8 *mac)
1189 {
1190 struct ieee80211_local *local = wiphy_priv(wiphy);
1191 struct ieee80211_sub_if_data *sdata;
1192
1193 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1194
1195 if (mac)
1196 return sta_info_destroy_addr_bss(sdata, mac);
1197
1198 sta_info_flush(local, sdata);
1199 return 0;
1200 }
1201
1202 static int ieee80211_change_station(struct wiphy *wiphy,
1203 struct net_device *dev,
1204 u8 *mac,
1205 struct station_parameters *params)
1206 {
1207 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1208 struct ieee80211_local *local = wiphy_priv(wiphy);
1209 struct sta_info *sta;
1210 struct ieee80211_sub_if_data *vlansdata;
1211 int err;
1212
1213 mutex_lock(&local->sta_mtx);
1214
1215 sta = sta_info_get_bss(sdata, mac);
1216 if (!sta) {
1217 mutex_unlock(&local->sta_mtx);
1218 return -ENOENT;
1219 }
1220
1221 /* in station mode, supported rates are only valid with TDLS */
1222 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1223 params->supported_rates &&
1224 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1225 mutex_unlock(&local->sta_mtx);
1226 return -EINVAL;
1227 }
1228
1229 if (params->vlan && params->vlan != sta->sdata->dev) {
1230 bool prev_4addr = false;
1231 bool new_4addr = false;
1232
1233 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1234
1235 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1236 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1237 mutex_unlock(&local->sta_mtx);
1238 return -EINVAL;
1239 }
1240
1241 if (params->vlan->ieee80211_ptr->use_4addr) {
1242 if (vlansdata->u.vlan.sta) {
1243 mutex_unlock(&local->sta_mtx);
1244 return -EBUSY;
1245 }
1246
1247 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1248 new_4addr = true;
1249 }
1250
1251 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1252 sta->sdata->u.vlan.sta) {
1253 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1254 prev_4addr = true;
1255 }
1256
1257 sta->sdata = vlansdata;
1258
1259 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1260 prev_4addr != new_4addr) {
1261 if (new_4addr)
1262 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1263 else
1264 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1265 }
1266
1267 ieee80211_send_layer2_update(sta);
1268 }
1269
1270 err = sta_apply_parameters(local, sta, params);
1271 if (err) {
1272 mutex_unlock(&local->sta_mtx);
1273 return err;
1274 }
1275
1276 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1277 rate_control_rate_init(sta);
1278
1279 mutex_unlock(&local->sta_mtx);
1280
1281 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1282 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1283 ieee80211_recalc_ps(local, -1);
1284
1285 return 0;
1286 }
1287
1288 #ifdef CONFIG_MAC80211_MESH
1289 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1290 u8 *dst, u8 *next_hop)
1291 {
1292 struct ieee80211_sub_if_data *sdata;
1293 struct mesh_path *mpath;
1294 struct sta_info *sta;
1295 int err;
1296
1297 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1298
1299 rcu_read_lock();
1300 sta = sta_info_get(sdata, next_hop);
1301 if (!sta) {
1302 rcu_read_unlock();
1303 return -ENOENT;
1304 }
1305
1306 err = mesh_path_add(dst, sdata);
1307 if (err) {
1308 rcu_read_unlock();
1309 return err;
1310 }
1311
1312 mpath = mesh_path_lookup(dst, sdata);
1313 if (!mpath) {
1314 rcu_read_unlock();
1315 return -ENXIO;
1316 }
1317 mesh_path_fix_nexthop(mpath, sta);
1318
1319 rcu_read_unlock();
1320 return 0;
1321 }
1322
1323 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1324 u8 *dst)
1325 {
1326 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1327
1328 if (dst)
1329 return mesh_path_del(dst, sdata);
1330
1331 mesh_path_flush_by_iface(sdata);
1332 return 0;
1333 }
1334
1335 static int ieee80211_change_mpath(struct wiphy *wiphy,
1336 struct net_device *dev,
1337 u8 *dst, u8 *next_hop)
1338 {
1339 struct ieee80211_sub_if_data *sdata;
1340 struct mesh_path *mpath;
1341 struct sta_info *sta;
1342
1343 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1344
1345 rcu_read_lock();
1346
1347 sta = sta_info_get(sdata, next_hop);
1348 if (!sta) {
1349 rcu_read_unlock();
1350 return -ENOENT;
1351 }
1352
1353 mpath = mesh_path_lookup(dst, sdata);
1354 if (!mpath) {
1355 rcu_read_unlock();
1356 return -ENOENT;
1357 }
1358
1359 mesh_path_fix_nexthop(mpath, sta);
1360
1361 rcu_read_unlock();
1362 return 0;
1363 }
1364
1365 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1366 struct mpath_info *pinfo)
1367 {
1368 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1369
1370 if (next_hop_sta)
1371 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1372 else
1373 memset(next_hop, 0, ETH_ALEN);
1374
1375 pinfo->generation = mesh_paths_generation;
1376
1377 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1378 MPATH_INFO_SN |
1379 MPATH_INFO_METRIC |
1380 MPATH_INFO_EXPTIME |
1381 MPATH_INFO_DISCOVERY_TIMEOUT |
1382 MPATH_INFO_DISCOVERY_RETRIES |
1383 MPATH_INFO_FLAGS;
1384
1385 pinfo->frame_qlen = mpath->frame_queue.qlen;
1386 pinfo->sn = mpath->sn;
1387 pinfo->metric = mpath->metric;
1388 if (time_before(jiffies, mpath->exp_time))
1389 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1390 pinfo->discovery_timeout =
1391 jiffies_to_msecs(mpath->discovery_timeout);
1392 pinfo->discovery_retries = mpath->discovery_retries;
1393 pinfo->flags = 0;
1394 if (mpath->flags & MESH_PATH_ACTIVE)
1395 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1396 if (mpath->flags & MESH_PATH_RESOLVING)
1397 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1398 if (mpath->flags & MESH_PATH_SN_VALID)
1399 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1400 if (mpath->flags & MESH_PATH_FIXED)
1401 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1402 if (mpath->flags & MESH_PATH_RESOLVING)
1403 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1404
1405 pinfo->flags = mpath->flags;
1406 }
1407
1408 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1409 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1410
1411 {
1412 struct ieee80211_sub_if_data *sdata;
1413 struct mesh_path *mpath;
1414
1415 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1416
1417 rcu_read_lock();
1418 mpath = mesh_path_lookup(dst, sdata);
1419 if (!mpath) {
1420 rcu_read_unlock();
1421 return -ENOENT;
1422 }
1423 memcpy(dst, mpath->dst, ETH_ALEN);
1424 mpath_set_pinfo(mpath, next_hop, pinfo);
1425 rcu_read_unlock();
1426 return 0;
1427 }
1428
1429 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1430 int idx, u8 *dst, u8 *next_hop,
1431 struct mpath_info *pinfo)
1432 {
1433 struct ieee80211_sub_if_data *sdata;
1434 struct mesh_path *mpath;
1435
1436 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1437
1438 rcu_read_lock();
1439 mpath = mesh_path_lookup_by_idx(idx, sdata);
1440 if (!mpath) {
1441 rcu_read_unlock();
1442 return -ENOENT;
1443 }
1444 memcpy(dst, mpath->dst, ETH_ALEN);
1445 mpath_set_pinfo(mpath, next_hop, pinfo);
1446 rcu_read_unlock();
1447 return 0;
1448 }
1449
1450 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1451 struct net_device *dev,
1452 struct mesh_config *conf)
1453 {
1454 struct ieee80211_sub_if_data *sdata;
1455 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1456
1457 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1458 return 0;
1459 }
1460
1461 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1462 {
1463 return (mask >> (parm-1)) & 0x1;
1464 }
1465
1466 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1467 const struct mesh_setup *setup)
1468 {
1469 u8 *new_ie;
1470 const u8 *old_ie;
1471 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1472 struct ieee80211_sub_if_data, u.mesh);
1473
1474 /* allocate information elements */
1475 new_ie = NULL;
1476 old_ie = ifmsh->ie;
1477
1478 if (setup->ie_len) {
1479 new_ie = kmemdup(setup->ie, setup->ie_len,
1480 GFP_KERNEL);
1481 if (!new_ie)
1482 return -ENOMEM;
1483 }
1484 ifmsh->ie_len = setup->ie_len;
1485 ifmsh->ie = new_ie;
1486 kfree(old_ie);
1487
1488 /* now copy the rest of the setup parameters */
1489 ifmsh->mesh_id_len = setup->mesh_id_len;
1490 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1491 ifmsh->mesh_sp_id = setup->sync_method;
1492 ifmsh->mesh_pp_id = setup->path_sel_proto;
1493 ifmsh->mesh_pm_id = setup->path_metric;
1494 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1495 if (setup->is_authenticated)
1496 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1497 if (setup->is_secure)
1498 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1499
1500 /* mcast rate setting in Mesh Node */
1501 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1502 sizeof(setup->mcast_rate));
1503
1504 return 0;
1505 }
1506
1507 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1508 struct net_device *dev, u32 mask,
1509 const struct mesh_config *nconf)
1510 {
1511 struct mesh_config *conf;
1512 struct ieee80211_sub_if_data *sdata;
1513 struct ieee80211_if_mesh *ifmsh;
1514
1515 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1516 ifmsh = &sdata->u.mesh;
1517
1518 /* Set the config options which we are interested in setting */
1519 conf = &(sdata->u.mesh.mshcfg);
1520 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1521 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1522 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1523 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1524 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1525 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1526 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1527 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1528 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1529 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1530 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1531 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1532 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1533 conf->dot11MeshTTL = nconf->element_ttl;
1534 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1535 conf->auto_open_plinks = nconf->auto_open_plinks;
1536 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1537 conf->dot11MeshNbrOffsetMaxNeighbor =
1538 nconf->dot11MeshNbrOffsetMaxNeighbor;
1539 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1540 conf->dot11MeshHWMPmaxPREQretries =
1541 nconf->dot11MeshHWMPmaxPREQretries;
1542 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1543 conf->path_refresh_time = nconf->path_refresh_time;
1544 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1545 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1546 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1547 conf->dot11MeshHWMPactivePathTimeout =
1548 nconf->dot11MeshHWMPactivePathTimeout;
1549 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1550 conf->dot11MeshHWMPpreqMinInterval =
1551 nconf->dot11MeshHWMPpreqMinInterval;
1552 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1553 conf->dot11MeshHWMPperrMinInterval =
1554 nconf->dot11MeshHWMPperrMinInterval;
1555 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1556 mask))
1557 conf->dot11MeshHWMPnetDiameterTraversalTime =
1558 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1559 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1560 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1561 ieee80211_mesh_root_setup(ifmsh);
1562 }
1563 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1564 /* our current gate announcement implementation rides on root
1565 * announcements, so require this ifmsh to also be a root node
1566 * */
1567 if (nconf->dot11MeshGateAnnouncementProtocol &&
1568 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1569 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1570 ieee80211_mesh_root_setup(ifmsh);
1571 }
1572 conf->dot11MeshGateAnnouncementProtocol =
1573 nconf->dot11MeshGateAnnouncementProtocol;
1574 }
1575 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1576 conf->dot11MeshHWMPRannInterval =
1577 nconf->dot11MeshHWMPRannInterval;
1578 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1579 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1580 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1581 /* our RSSI threshold implementation is supported only for
1582 * devices that report signal in dBm.
1583 */
1584 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1585 return -ENOTSUPP;
1586 conf->rssi_threshold = nconf->rssi_threshold;
1587 }
1588 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1589 conf->ht_opmode = nconf->ht_opmode;
1590 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1591 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1592 }
1593 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1594 conf->dot11MeshHWMPactivePathToRootTimeout =
1595 nconf->dot11MeshHWMPactivePathToRootTimeout;
1596 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1597 conf->dot11MeshHWMProotInterval =
1598 nconf->dot11MeshHWMProotInterval;
1599 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1600 conf->dot11MeshHWMPconfirmationInterval =
1601 nconf->dot11MeshHWMPconfirmationInterval;
1602 return 0;
1603 }
1604
1605 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1606 const struct mesh_config *conf,
1607 const struct mesh_setup *setup)
1608 {
1609 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1610 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1611 int err;
1612
1613 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1614 err = copy_mesh_setup(ifmsh, setup);
1615 if (err)
1616 return err;
1617
1618 err = ieee80211_set_channel(wiphy, dev, setup->channel,
1619 setup->channel_type);
1620 if (err)
1621 return err;
1622
1623 ieee80211_start_mesh(sdata);
1624
1625 return 0;
1626 }
1627
1628 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1629 {
1630 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1631
1632 ieee80211_stop_mesh(sdata);
1633
1634 return 0;
1635 }
1636 #endif
1637
1638 static int ieee80211_change_bss(struct wiphy *wiphy,
1639 struct net_device *dev,
1640 struct bss_parameters *params)
1641 {
1642 struct ieee80211_sub_if_data *sdata;
1643 u32 changed = 0;
1644
1645 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1646
1647 if (params->use_cts_prot >= 0) {
1648 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1649 changed |= BSS_CHANGED_ERP_CTS_PROT;
1650 }
1651 if (params->use_short_preamble >= 0) {
1652 sdata->vif.bss_conf.use_short_preamble =
1653 params->use_short_preamble;
1654 changed |= BSS_CHANGED_ERP_PREAMBLE;
1655 }
1656
1657 if (!sdata->vif.bss_conf.use_short_slot &&
1658 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1659 sdata->vif.bss_conf.use_short_slot = true;
1660 changed |= BSS_CHANGED_ERP_SLOT;
1661 }
1662
1663 if (params->use_short_slot_time >= 0) {
1664 sdata->vif.bss_conf.use_short_slot =
1665 params->use_short_slot_time;
1666 changed |= BSS_CHANGED_ERP_SLOT;
1667 }
1668
1669 if (params->basic_rates) {
1670 int i, j;
1671 u32 rates = 0;
1672 struct ieee80211_local *local = wiphy_priv(wiphy);
1673 struct ieee80211_supported_band *sband =
1674 wiphy->bands[local->oper_channel->band];
1675
1676 for (i = 0; i < params->basic_rates_len; i++) {
1677 int rate = (params->basic_rates[i] & 0x7f) * 5;
1678 for (j = 0; j < sband->n_bitrates; j++) {
1679 if (sband->bitrates[j].bitrate == rate)
1680 rates |= BIT(j);
1681 }
1682 }
1683 sdata->vif.bss_conf.basic_rates = rates;
1684 changed |= BSS_CHANGED_BASIC_RATES;
1685 }
1686
1687 if (params->ap_isolate >= 0) {
1688 if (params->ap_isolate)
1689 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1690 else
1691 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1692 }
1693
1694 if (params->ht_opmode >= 0) {
1695 sdata->vif.bss_conf.ht_operation_mode =
1696 (u16) params->ht_opmode;
1697 changed |= BSS_CHANGED_HT;
1698 }
1699
1700 ieee80211_bss_info_change_notify(sdata, changed);
1701
1702 return 0;
1703 }
1704
1705 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1706 struct net_device *dev,
1707 struct ieee80211_txq_params *params)
1708 {
1709 struct ieee80211_local *local = wiphy_priv(wiphy);
1710 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1711 struct ieee80211_tx_queue_params p;
1712
1713 if (!local->ops->conf_tx)
1714 return -EOPNOTSUPP;
1715
1716 if (local->hw.queues < IEEE80211_NUM_ACS)
1717 return -EOPNOTSUPP;
1718
1719 memset(&p, 0, sizeof(p));
1720 p.aifs = params->aifs;
1721 p.cw_max = params->cwmax;
1722 p.cw_min = params->cwmin;
1723 p.txop = params->txop;
1724
1725 /*
1726 * Setting tx queue params disables u-apsd because it's only
1727 * called in master mode.
1728 */
1729 p.uapsd = false;
1730
1731 sdata->tx_conf[params->ac] = p;
1732 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1733 wiphy_debug(local->hw.wiphy,
1734 "failed to set TX queue parameters for AC %d\n",
1735 params->ac);
1736 return -EINVAL;
1737 }
1738
1739 return 0;
1740 }
1741
1742 #ifdef CONFIG_PM
1743 static int ieee80211_suspend(struct wiphy *wiphy,
1744 struct cfg80211_wowlan *wowlan)
1745 {
1746 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1747 }
1748
1749 static int ieee80211_resume(struct wiphy *wiphy)
1750 {
1751 return __ieee80211_resume(wiphy_priv(wiphy));
1752 }
1753 #else
1754 #define ieee80211_suspend NULL
1755 #define ieee80211_resume NULL
1756 #endif
1757
1758 static int ieee80211_scan(struct wiphy *wiphy,
1759 struct net_device *dev,
1760 struct cfg80211_scan_request *req)
1761 {
1762 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1763
1764 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1765 case NL80211_IFTYPE_STATION:
1766 case NL80211_IFTYPE_ADHOC:
1767 case NL80211_IFTYPE_MESH_POINT:
1768 case NL80211_IFTYPE_P2P_CLIENT:
1769 break;
1770 case NL80211_IFTYPE_P2P_GO:
1771 if (sdata->local->ops->hw_scan)
1772 break;
1773 /*
1774 * FIXME: implement NoA while scanning in software,
1775 * for now fall through to allow scanning only when
1776 * beaconing hasn't been configured yet
1777 */
1778 case NL80211_IFTYPE_AP:
1779 if (sdata->u.ap.beacon)
1780 return -EOPNOTSUPP;
1781 break;
1782 default:
1783 return -EOPNOTSUPP;
1784 }
1785
1786 return ieee80211_request_scan(sdata, req);
1787 }
1788
1789 static int
1790 ieee80211_sched_scan_start(struct wiphy *wiphy,
1791 struct net_device *dev,
1792 struct cfg80211_sched_scan_request *req)
1793 {
1794 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1795
1796 if (!sdata->local->ops->sched_scan_start)
1797 return -EOPNOTSUPP;
1798
1799 return ieee80211_request_sched_scan_start(sdata, req);
1800 }
1801
1802 static int
1803 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1804 {
1805 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1806
1807 if (!sdata->local->ops->sched_scan_stop)
1808 return -EOPNOTSUPP;
1809
1810 return ieee80211_request_sched_scan_stop(sdata);
1811 }
1812
1813 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1814 struct cfg80211_auth_request *req)
1815 {
1816 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1817 }
1818
1819 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1820 struct cfg80211_assoc_request *req)
1821 {
1822 struct ieee80211_local *local = wiphy_priv(wiphy);
1823 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1824
1825 switch (ieee80211_get_channel_mode(local, sdata)) {
1826 case CHAN_MODE_HOPPING:
1827 return -EBUSY;
1828 case CHAN_MODE_FIXED:
1829 if (local->oper_channel == req->bss->channel)
1830 break;
1831 return -EBUSY;
1832 case CHAN_MODE_UNDEFINED:
1833 break;
1834 }
1835
1836 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1837 }
1838
1839 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1840 struct cfg80211_deauth_request *req)
1841 {
1842 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1843 }
1844
1845 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1846 struct cfg80211_disassoc_request *req)
1847 {
1848 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1849 }
1850
1851 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1852 struct cfg80211_ibss_params *params)
1853 {
1854 struct ieee80211_local *local = wiphy_priv(wiphy);
1855 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1856
1857 switch (ieee80211_get_channel_mode(local, sdata)) {
1858 case CHAN_MODE_HOPPING:
1859 return -EBUSY;
1860 case CHAN_MODE_FIXED:
1861 if (!params->channel_fixed)
1862 return -EBUSY;
1863 if (local->oper_channel == params->channel)
1864 break;
1865 return -EBUSY;
1866 case CHAN_MODE_UNDEFINED:
1867 break;
1868 }
1869
1870 return ieee80211_ibss_join(sdata, params);
1871 }
1872
1873 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1874 {
1875 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1876
1877 return ieee80211_ibss_leave(sdata);
1878 }
1879
1880 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1881 {
1882 struct ieee80211_local *local = wiphy_priv(wiphy);
1883 int err;
1884
1885 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1886 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1887
1888 if (err)
1889 return err;
1890 }
1891
1892 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1893 err = drv_set_coverage_class(local, wiphy->coverage_class);
1894
1895 if (err)
1896 return err;
1897 }
1898
1899 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1900 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1901
1902 if (err)
1903 return err;
1904 }
1905
1906 if (changed & WIPHY_PARAM_RETRY_SHORT)
1907 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1908 if (changed & WIPHY_PARAM_RETRY_LONG)
1909 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1910 if (changed &
1911 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1912 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1913
1914 return 0;
1915 }
1916
1917 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1918 enum nl80211_tx_power_setting type, int mbm)
1919 {
1920 struct ieee80211_local *local = wiphy_priv(wiphy);
1921 struct ieee80211_channel *chan = local->hw.conf.channel;
1922 u32 changes = 0;
1923
1924 switch (type) {
1925 case NL80211_TX_POWER_AUTOMATIC:
1926 local->user_power_level = -1;
1927 break;
1928 case NL80211_TX_POWER_LIMITED:
1929 if (mbm < 0 || (mbm % 100))
1930 return -EOPNOTSUPP;
1931 local->user_power_level = MBM_TO_DBM(mbm);
1932 break;
1933 case NL80211_TX_POWER_FIXED:
1934 if (mbm < 0 || (mbm % 100))
1935 return -EOPNOTSUPP;
1936 /* TODO: move to cfg80211 when it knows the channel */
1937 if (MBM_TO_DBM(mbm) > chan->max_power)
1938 return -EINVAL;
1939 local->user_power_level = MBM_TO_DBM(mbm);
1940 break;
1941 }
1942
1943 ieee80211_hw_config(local, changes);
1944
1945 return 0;
1946 }
1947
1948 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1949 {
1950 struct ieee80211_local *local = wiphy_priv(wiphy);
1951
1952 *dbm = local->hw.conf.power_level;
1953
1954 return 0;
1955 }
1956
1957 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1958 const u8 *addr)
1959 {
1960 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1961
1962 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1963
1964 return 0;
1965 }
1966
1967 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1968 {
1969 struct ieee80211_local *local = wiphy_priv(wiphy);
1970
1971 drv_rfkill_poll(local);
1972 }
1973
1974 #ifdef CONFIG_NL80211_TESTMODE
1975 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1976 {
1977 struct ieee80211_local *local = wiphy_priv(wiphy);
1978
1979 if (!local->ops->testmode_cmd)
1980 return -EOPNOTSUPP;
1981
1982 return local->ops->testmode_cmd(&local->hw, data, len);
1983 }
1984
1985 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1986 struct sk_buff *skb,
1987 struct netlink_callback *cb,
1988 void *data, int len)
1989 {
1990 struct ieee80211_local *local = wiphy_priv(wiphy);
1991
1992 if (!local->ops->testmode_dump)
1993 return -EOPNOTSUPP;
1994
1995 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1996 }
1997 #endif
1998
1999 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2000 enum ieee80211_smps_mode smps_mode)
2001 {
2002 const u8 *ap;
2003 enum ieee80211_smps_mode old_req;
2004 int err;
2005
2006 lockdep_assert_held(&sdata->u.mgd.mtx);
2007
2008 old_req = sdata->u.mgd.req_smps;
2009 sdata->u.mgd.req_smps = smps_mode;
2010
2011 if (old_req == smps_mode &&
2012 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2013 return 0;
2014
2015 /*
2016 * If not associated, or current association is not an HT
2017 * association, there's no need to send an action frame.
2018 */
2019 if (!sdata->u.mgd.associated ||
2020 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2021 mutex_lock(&sdata->local->iflist_mtx);
2022 ieee80211_recalc_smps(sdata->local);
2023 mutex_unlock(&sdata->local->iflist_mtx);
2024 return 0;
2025 }
2026
2027 ap = sdata->u.mgd.associated->bssid;
2028
2029 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2030 if (sdata->u.mgd.powersave)
2031 smps_mode = IEEE80211_SMPS_DYNAMIC;
2032 else
2033 smps_mode = IEEE80211_SMPS_OFF;
2034 }
2035
2036 /* send SM PS frame to AP */
2037 err = ieee80211_send_smps_action(sdata, smps_mode,
2038 ap, ap);
2039 if (err)
2040 sdata->u.mgd.req_smps = old_req;
2041
2042 return err;
2043 }
2044
2045 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2046 bool enabled, int timeout)
2047 {
2048 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2049 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2050
2051 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2052 return -EOPNOTSUPP;
2053
2054 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2055 return -EOPNOTSUPP;
2056
2057 if (enabled == sdata->u.mgd.powersave &&
2058 timeout == local->dynamic_ps_forced_timeout)
2059 return 0;
2060
2061 sdata->u.mgd.powersave = enabled;
2062 local->dynamic_ps_forced_timeout = timeout;
2063
2064 /* no change, but if automatic follow powersave */
2065 mutex_lock(&sdata->u.mgd.mtx);
2066 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2067 mutex_unlock(&sdata->u.mgd.mtx);
2068
2069 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2070 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2071
2072 ieee80211_recalc_ps(local, -1);
2073
2074 return 0;
2075 }
2076
2077 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2078 struct net_device *dev,
2079 s32 rssi_thold, u32 rssi_hyst)
2080 {
2081 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2082 struct ieee80211_vif *vif = &sdata->vif;
2083 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2084
2085 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2086 rssi_hyst == bss_conf->cqm_rssi_hyst)
2087 return 0;
2088
2089 bss_conf->cqm_rssi_thold = rssi_thold;
2090 bss_conf->cqm_rssi_hyst = rssi_hyst;
2091
2092 /* tell the driver upon association, unless already associated */
2093 if (sdata->u.mgd.associated &&
2094 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2095 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2096
2097 return 0;
2098 }
2099
2100 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2101 struct net_device *dev,
2102 const u8 *addr,
2103 const struct cfg80211_bitrate_mask *mask)
2104 {
2105 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2106 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2107 int i, ret;
2108
2109 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2110 ret = drv_set_bitrate_mask(local, sdata, mask);
2111 if (ret)
2112 return ret;
2113 }
2114
2115 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2116 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2117 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2118 sizeof(mask->control[i].mcs));
2119 }
2120
2121 return 0;
2122 }
2123
2124 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2125 struct ieee80211_sub_if_data *sdata,
2126 struct ieee80211_channel *channel,
2127 enum nl80211_channel_type channel_type,
2128 unsigned int duration, u64 *cookie,
2129 struct sk_buff *txskb)
2130 {
2131 struct ieee80211_roc_work *roc, *tmp;
2132 bool queued = false;
2133 int ret;
2134
2135 lockdep_assert_held(&local->mtx);
2136
2137 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2138 if (!roc)
2139 return -ENOMEM;
2140
2141 roc->chan = channel;
2142 roc->chan_type = channel_type;
2143 roc->duration = duration;
2144 roc->req_duration = duration;
2145 roc->frame = txskb;
2146 roc->mgmt_tx_cookie = (unsigned long)txskb;
2147 roc->sdata = sdata;
2148 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2149 INIT_LIST_HEAD(&roc->dependents);
2150
2151 /* if there's one pending or we're scanning, queue this one */
2152 if (!list_empty(&local->roc_list) || local->scanning)
2153 goto out_check_combine;
2154
2155 /* if not HW assist, just queue & schedule work */
2156 if (!local->ops->remain_on_channel) {
2157 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2158 goto out_queue;
2159 }
2160
2161 /* otherwise actually kick it off here (for error handling) */
2162
2163 /*
2164 * If the duration is zero, then the driver
2165 * wouldn't actually do anything. Set it to
2166 * 10 for now.
2167 *
2168 * TODO: cancel the off-channel operation
2169 * when we get the SKB's TX status and
2170 * the wait time was zero before.
2171 */
2172 if (!duration)
2173 duration = 10;
2174
2175 ret = drv_remain_on_channel(local, channel, channel_type, duration);
2176 if (ret) {
2177 kfree(roc);
2178 return ret;
2179 }
2180
2181 roc->started = true;
2182 goto out_queue;
2183
2184 out_check_combine:
2185 list_for_each_entry(tmp, &local->roc_list, list) {
2186 if (tmp->chan != channel || tmp->chan_type != channel_type)
2187 continue;
2188
2189 /*
2190 * Extend this ROC if possible:
2191 *
2192 * If it hasn't started yet, just increase the duration
2193 * and add the new one to the list of dependents.
2194 */
2195 if (!tmp->started) {
2196 list_add_tail(&roc->list, &tmp->dependents);
2197 tmp->duration = max(tmp->duration, roc->duration);
2198 queued = true;
2199 break;
2200 }
2201
2202 /* If it has already started, it's more difficult ... */
2203 if (local->ops->remain_on_channel) {
2204 unsigned long j = jiffies;
2205
2206 /*
2207 * In the offloaded ROC case, if it hasn't begun, add
2208 * this new one to the dependent list to be handled
2209 * when the the master one begins. If it has begun,
2210 * check that there's still a minimum time left and
2211 * if so, start this one, transmitting the frame, but
2212 * add it to the list directly after this one with a
2213 * a reduced time so we'll ask the driver to execute
2214 * it right after finishing the previous one, in the
2215 * hope that it'll also be executed right afterwards,
2216 * effectively extending the old one.
2217 * If there's no minimum time left, just add it to the
2218 * normal list.
2219 */
2220 if (!tmp->hw_begun) {
2221 list_add_tail(&roc->list, &tmp->dependents);
2222 queued = true;
2223 break;
2224 }
2225
2226 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2227 tmp->hw_start_time +
2228 msecs_to_jiffies(tmp->duration))) {
2229 int new_dur;
2230
2231 ieee80211_handle_roc_started(roc);
2232
2233 new_dur = roc->duration -
2234 jiffies_to_msecs(tmp->hw_start_time +
2235 msecs_to_jiffies(
2236 tmp->duration) -
2237 j);
2238
2239 if (new_dur > 0) {
2240 /* add right after tmp */
2241 list_add(&roc->list, &tmp->list);
2242 } else {
2243 list_add_tail(&roc->list,
2244 &tmp->dependents);
2245 }
2246 queued = true;
2247 }
2248 } else if (del_timer_sync(&tmp->work.timer)) {
2249 unsigned long new_end;
2250
2251 /*
2252 * In the software ROC case, cancel the timer, if
2253 * that fails then the finish work is already
2254 * queued/pending and thus we queue the new ROC
2255 * normally, if that succeeds then we can extend
2256 * the timer duration and TX the frame (if any.)
2257 */
2258
2259 list_add_tail(&roc->list, &tmp->dependents);
2260 queued = true;
2261
2262 new_end = jiffies + msecs_to_jiffies(roc->duration);
2263
2264 /* ok, it was started & we canceled timer */
2265 if (time_after(new_end, tmp->work.timer.expires))
2266 mod_timer(&tmp->work.timer, new_end);
2267 else
2268 add_timer(&tmp->work.timer);
2269
2270 ieee80211_handle_roc_started(roc);
2271 }
2272 break;
2273 }
2274
2275 out_queue:
2276 if (!queued)
2277 list_add_tail(&roc->list, &local->roc_list);
2278
2279 /*
2280 * cookie is either the roc (for normal roc)
2281 * or the SKB (for mgmt TX)
2282 */
2283 if (txskb)
2284 *cookie = (unsigned long)txskb;
2285 else
2286 *cookie = (unsigned long)roc;
2287
2288 return 0;
2289 }
2290
2291 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2292 struct net_device *dev,
2293 struct ieee80211_channel *chan,
2294 enum nl80211_channel_type channel_type,
2295 unsigned int duration,
2296 u64 *cookie)
2297 {
2298 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2299 struct ieee80211_local *local = sdata->local;
2300 int ret;
2301
2302 mutex_lock(&local->mtx);
2303 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2304 duration, cookie, NULL);
2305 mutex_unlock(&local->mtx);
2306
2307 return ret;
2308 }
2309
2310 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2311 u64 cookie, bool mgmt_tx)
2312 {
2313 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2314 int ret;
2315
2316 mutex_lock(&local->mtx);
2317 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2318 struct ieee80211_roc_work *dep, *tmp2;
2319
2320 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2321 if (!mgmt_tx && (unsigned long)dep != cookie)
2322 continue;
2323 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2324 continue;
2325 /* found dependent item -- just remove it */
2326 list_del(&dep->list);
2327 mutex_unlock(&local->mtx);
2328
2329 ieee80211_roc_notify_destroy(dep);
2330 return 0;
2331 }
2332
2333 if (!mgmt_tx && (unsigned long)roc != cookie)
2334 continue;
2335 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2336 continue;
2337
2338 found = roc;
2339 break;
2340 }
2341
2342 if (!found) {
2343 mutex_unlock(&local->mtx);
2344 return -ENOENT;
2345 }
2346
2347 /*
2348 * We found the item to cancel, so do that. Note that it
2349 * may have dependents, which we also cancel (and send
2350 * the expired signal for.) Not doing so would be quite
2351 * tricky here, but we may need to fix it later.
2352 */
2353
2354 if (local->ops->remain_on_channel) {
2355 if (found->started) {
2356 ret = drv_cancel_remain_on_channel(local);
2357 if (WARN_ON_ONCE(ret)) {
2358 mutex_unlock(&local->mtx);
2359 return ret;
2360 }
2361 }
2362
2363 list_del(&found->list);
2364
2365 ieee80211_start_next_roc(local);
2366 mutex_unlock(&local->mtx);
2367
2368 ieee80211_roc_notify_destroy(found);
2369 } else {
2370 /* work may be pending so use it all the time */
2371 found->abort = true;
2372 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2373
2374 mutex_unlock(&local->mtx);
2375
2376 /* work will clean up etc */
2377 flush_delayed_work(&found->work);
2378 }
2379
2380 return 0;
2381 }
2382
2383 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2384 struct net_device *dev,
2385 u64 cookie)
2386 {
2387 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2388 struct ieee80211_local *local = sdata->local;
2389
2390 return ieee80211_cancel_roc(local, cookie, false);
2391 }
2392
2393 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2394 struct ieee80211_channel *chan, bool offchan,
2395 enum nl80211_channel_type channel_type,
2396 bool channel_type_valid, unsigned int wait,
2397 const u8 *buf, size_t len, bool no_cck,
2398 bool dont_wait_for_ack, u64 *cookie)
2399 {
2400 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2401 struct ieee80211_local *local = sdata->local;
2402 struct sk_buff *skb;
2403 struct sta_info *sta;
2404 const struct ieee80211_mgmt *mgmt = (void *)buf;
2405 bool need_offchan = false;
2406 u32 flags;
2407 int ret;
2408
2409 if (dont_wait_for_ack)
2410 flags = IEEE80211_TX_CTL_NO_ACK;
2411 else
2412 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2413 IEEE80211_TX_CTL_REQ_TX_STATUS;
2414
2415 if (no_cck)
2416 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2417
2418 switch (sdata->vif.type) {
2419 case NL80211_IFTYPE_ADHOC:
2420 if (!sdata->vif.bss_conf.ibss_joined)
2421 need_offchan = true;
2422 /* fall through */
2423 #ifdef CONFIG_MAC80211_MESH
2424 case NL80211_IFTYPE_MESH_POINT:
2425 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2426 !sdata->u.mesh.mesh_id_len)
2427 need_offchan = true;
2428 /* fall through */
2429 #endif
2430 case NL80211_IFTYPE_AP:
2431 case NL80211_IFTYPE_AP_VLAN:
2432 case NL80211_IFTYPE_P2P_GO:
2433 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2434 !ieee80211_vif_is_mesh(&sdata->vif) &&
2435 !rcu_access_pointer(sdata->bss->beacon))
2436 need_offchan = true;
2437 if (!ieee80211_is_action(mgmt->frame_control) ||
2438 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2439 break;
2440 rcu_read_lock();
2441 sta = sta_info_get(sdata, mgmt->da);
2442 rcu_read_unlock();
2443 if (!sta)
2444 return -ENOLINK;
2445 break;
2446 case NL80211_IFTYPE_STATION:
2447 case NL80211_IFTYPE_P2P_CLIENT:
2448 if (!sdata->u.mgd.associated)
2449 need_offchan = true;
2450 break;
2451 default:
2452 return -EOPNOTSUPP;
2453 }
2454
2455 mutex_lock(&local->mtx);
2456
2457 /* Check if the operating channel is the requested channel */
2458 if (!need_offchan) {
2459 need_offchan = chan != local->oper_channel;
2460 if (channel_type_valid &&
2461 channel_type != local->_oper_channel_type)
2462 need_offchan = true;
2463 }
2464
2465 if (need_offchan && !offchan) {
2466 ret = -EBUSY;
2467 goto out_unlock;
2468 }
2469
2470 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2471 if (!skb) {
2472 ret = -ENOMEM;
2473 goto out_unlock;
2474 }
2475 skb_reserve(skb, local->hw.extra_tx_headroom);
2476
2477 memcpy(skb_put(skb, len), buf, len);
2478
2479 IEEE80211_SKB_CB(skb)->flags = flags;
2480
2481 skb->dev = sdata->dev;
2482
2483 if (!need_offchan) {
2484 ieee80211_tx_skb(sdata, skb);
2485 ret = 0;
2486 goto out_unlock;
2487 }
2488
2489 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2490 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2491 IEEE80211_SKB_CB(skb)->hw_queue =
2492 local->hw.offchannel_tx_hw_queue;
2493
2494 /* This will handle all kinds of coalescing and immediate TX */
2495 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2496 wait, cookie, skb);
2497 if (ret)
2498 kfree_skb(skb);
2499 out_unlock:
2500 mutex_unlock(&local->mtx);
2501 return ret;
2502 }
2503
2504 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2505 struct net_device *dev,
2506 u64 cookie)
2507 {
2508 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2509 struct ieee80211_local *local = sdata->local;
2510
2511 return ieee80211_cancel_roc(local, cookie, true);
2512 }
2513
2514 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2515 struct net_device *dev,
2516 u16 frame_type, bool reg)
2517 {
2518 struct ieee80211_local *local = wiphy_priv(wiphy);
2519
2520 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2521 return;
2522
2523 if (reg)
2524 local->probe_req_reg++;
2525 else
2526 local->probe_req_reg--;
2527
2528 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2529 }
2530
2531 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2532 {
2533 struct ieee80211_local *local = wiphy_priv(wiphy);
2534
2535 if (local->started)
2536 return -EOPNOTSUPP;
2537
2538 return drv_set_antenna(local, tx_ant, rx_ant);
2539 }
2540
2541 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2542 {
2543 struct ieee80211_local *local = wiphy_priv(wiphy);
2544
2545 return drv_get_antenna(local, tx_ant, rx_ant);
2546 }
2547
2548 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2549 {
2550 struct ieee80211_local *local = wiphy_priv(wiphy);
2551
2552 return drv_set_ringparam(local, tx, rx);
2553 }
2554
2555 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2556 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2557 {
2558 struct ieee80211_local *local = wiphy_priv(wiphy);
2559
2560 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2561 }
2562
2563 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2564 struct net_device *dev,
2565 struct cfg80211_gtk_rekey_data *data)
2566 {
2567 struct ieee80211_local *local = wiphy_priv(wiphy);
2568 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2569
2570 if (!local->ops->set_rekey_data)
2571 return -EOPNOTSUPP;
2572
2573 drv_set_rekey_data(local, sdata, data);
2574
2575 return 0;
2576 }
2577
2578 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2579 {
2580 u8 *pos = (void *)skb_put(skb, 7);
2581
2582 *pos++ = WLAN_EID_EXT_CAPABILITY;
2583 *pos++ = 5; /* len */
2584 *pos++ = 0x0;
2585 *pos++ = 0x0;
2586 *pos++ = 0x0;
2587 *pos++ = 0x0;
2588 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2589 }
2590
2591 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2592 {
2593 struct ieee80211_local *local = sdata->local;
2594 u16 capab;
2595
2596 capab = 0;
2597 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2598 return capab;
2599
2600 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2601 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2602 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2603 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2604
2605 return capab;
2606 }
2607
2608 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2609 u8 *peer, u8 *bssid)
2610 {
2611 struct ieee80211_tdls_lnkie *lnkid;
2612
2613 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2614
2615 lnkid->ie_type = WLAN_EID_LINK_ID;
2616 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2617
2618 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2619 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2620 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2621 }
2622
2623 static int
2624 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2625 u8 *peer, u8 action_code, u8 dialog_token,
2626 u16 status_code, struct sk_buff *skb)
2627 {
2628 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2629 struct ieee80211_tdls_data *tf;
2630
2631 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2632
2633 memcpy(tf->da, peer, ETH_ALEN);
2634 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2635 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2636 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2637
2638 switch (action_code) {
2639 case WLAN_TDLS_SETUP_REQUEST:
2640 tf->category = WLAN_CATEGORY_TDLS;
2641 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2642
2643 skb_put(skb, sizeof(tf->u.setup_req));
2644 tf->u.setup_req.dialog_token = dialog_token;
2645 tf->u.setup_req.capability =
2646 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2647
2648 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2649 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2650 ieee80211_tdls_add_ext_capab(skb);
2651 break;
2652 case WLAN_TDLS_SETUP_RESPONSE:
2653 tf->category = WLAN_CATEGORY_TDLS;
2654 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2655
2656 skb_put(skb, sizeof(tf->u.setup_resp));
2657 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2658 tf->u.setup_resp.dialog_token = dialog_token;
2659 tf->u.setup_resp.capability =
2660 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2661
2662 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2663 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2664 ieee80211_tdls_add_ext_capab(skb);
2665 break;
2666 case WLAN_TDLS_SETUP_CONFIRM:
2667 tf->category = WLAN_CATEGORY_TDLS;
2668 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2669
2670 skb_put(skb, sizeof(tf->u.setup_cfm));
2671 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2672 tf->u.setup_cfm.dialog_token = dialog_token;
2673 break;
2674 case WLAN_TDLS_TEARDOWN:
2675 tf->category = WLAN_CATEGORY_TDLS;
2676 tf->action_code = WLAN_TDLS_TEARDOWN;
2677
2678 skb_put(skb, sizeof(tf->u.teardown));
2679 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2680 break;
2681 case WLAN_TDLS_DISCOVERY_REQUEST:
2682 tf->category = WLAN_CATEGORY_TDLS;
2683 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2684
2685 skb_put(skb, sizeof(tf->u.discover_req));
2686 tf->u.discover_req.dialog_token = dialog_token;
2687 break;
2688 default:
2689 return -EINVAL;
2690 }
2691
2692 return 0;
2693 }
2694
2695 static int
2696 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2697 u8 *peer, u8 action_code, u8 dialog_token,
2698 u16 status_code, struct sk_buff *skb)
2699 {
2700 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2701 struct ieee80211_mgmt *mgmt;
2702
2703 mgmt = (void *)skb_put(skb, 24);
2704 memset(mgmt, 0, 24);
2705 memcpy(mgmt->da, peer, ETH_ALEN);
2706 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2707 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2708
2709 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2710 IEEE80211_STYPE_ACTION);
2711
2712 switch (action_code) {
2713 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2714 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2715 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2716 mgmt->u.action.u.tdls_discover_resp.action_code =
2717 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2718 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2719 dialog_token;
2720 mgmt->u.action.u.tdls_discover_resp.capability =
2721 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2722
2723 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2724 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2725 ieee80211_tdls_add_ext_capab(skb);
2726 break;
2727 default:
2728 return -EINVAL;
2729 }
2730
2731 return 0;
2732 }
2733
2734 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2735 u8 *peer, u8 action_code, u8 dialog_token,
2736 u16 status_code, const u8 *extra_ies,
2737 size_t extra_ies_len)
2738 {
2739 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2740 struct ieee80211_local *local = sdata->local;
2741 struct ieee80211_tx_info *info;
2742 struct sk_buff *skb = NULL;
2743 bool send_direct;
2744 int ret;
2745
2746 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2747 return -ENOTSUPP;
2748
2749 /* make sure we are in managed mode, and associated */
2750 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2751 !sdata->u.mgd.associated)
2752 return -EINVAL;
2753
2754 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2755 pr_debug("TDLS mgmt action %d peer %pM\n", action_code, peer);
2756 #endif
2757
2758 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2759 max(sizeof(struct ieee80211_mgmt),
2760 sizeof(struct ieee80211_tdls_data)) +
2761 50 + /* supported rates */
2762 7 + /* ext capab */
2763 extra_ies_len +
2764 sizeof(struct ieee80211_tdls_lnkie));
2765 if (!skb)
2766 return -ENOMEM;
2767
2768 info = IEEE80211_SKB_CB(skb);
2769 skb_reserve(skb, local->hw.extra_tx_headroom);
2770
2771 switch (action_code) {
2772 case WLAN_TDLS_SETUP_REQUEST:
2773 case WLAN_TDLS_SETUP_RESPONSE:
2774 case WLAN_TDLS_SETUP_CONFIRM:
2775 case WLAN_TDLS_TEARDOWN:
2776 case WLAN_TDLS_DISCOVERY_REQUEST:
2777 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2778 action_code, dialog_token,
2779 status_code, skb);
2780 send_direct = false;
2781 break;
2782 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2783 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2784 dialog_token, status_code,
2785 skb);
2786 send_direct = true;
2787 break;
2788 default:
2789 ret = -ENOTSUPP;
2790 break;
2791 }
2792
2793 if (ret < 0)
2794 goto fail;
2795
2796 if (extra_ies_len)
2797 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2798
2799 /* the TDLS link IE is always added last */
2800 switch (action_code) {
2801 case WLAN_TDLS_SETUP_REQUEST:
2802 case WLAN_TDLS_SETUP_CONFIRM:
2803 case WLAN_TDLS_TEARDOWN:
2804 case WLAN_TDLS_DISCOVERY_REQUEST:
2805 /* we are the initiator */
2806 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2807 sdata->u.mgd.bssid);
2808 break;
2809 case WLAN_TDLS_SETUP_RESPONSE:
2810 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2811 /* we are the responder */
2812 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2813 sdata->u.mgd.bssid);
2814 break;
2815 default:
2816 ret = -ENOTSUPP;
2817 goto fail;
2818 }
2819
2820 if (send_direct) {
2821 ieee80211_tx_skb(sdata, skb);
2822 return 0;
2823 }
2824
2825 /*
2826 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2827 * we should default to AC_VI.
2828 */
2829 switch (action_code) {
2830 case WLAN_TDLS_SETUP_REQUEST:
2831 case WLAN_TDLS_SETUP_RESPONSE:
2832 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2833 skb->priority = 2;
2834 break;
2835 default:
2836 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2837 skb->priority = 5;
2838 break;
2839 }
2840
2841 /* disable bottom halves when entering the Tx path */
2842 local_bh_disable();
2843 ret = ieee80211_subif_start_xmit(skb, dev);
2844 local_bh_enable();
2845
2846 return ret;
2847
2848 fail:
2849 dev_kfree_skb(skb);
2850 return ret;
2851 }
2852
2853 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2854 u8 *peer, enum nl80211_tdls_operation oper)
2855 {
2856 struct sta_info *sta;
2857 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2858
2859 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2860 return -ENOTSUPP;
2861
2862 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2863 return -EINVAL;
2864
2865 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2866 pr_debug("TDLS oper %d peer %pM\n", oper, peer);
2867 #endif
2868
2869 switch (oper) {
2870 case NL80211_TDLS_ENABLE_LINK:
2871 rcu_read_lock();
2872 sta = sta_info_get(sdata, peer);
2873 if (!sta) {
2874 rcu_read_unlock();
2875 return -ENOLINK;
2876 }
2877
2878 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2879 rcu_read_unlock();
2880 break;
2881 case NL80211_TDLS_DISABLE_LINK:
2882 return sta_info_destroy_addr(sdata, peer);
2883 case NL80211_TDLS_TEARDOWN:
2884 case NL80211_TDLS_SETUP:
2885 case NL80211_TDLS_DISCOVERY_REQ:
2886 /* We don't support in-driver setup/teardown/discovery */
2887 return -ENOTSUPP;
2888 default:
2889 return -ENOTSUPP;
2890 }
2891
2892 return 0;
2893 }
2894
2895 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2896 const u8 *peer, u64 *cookie)
2897 {
2898 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2899 struct ieee80211_local *local = sdata->local;
2900 struct ieee80211_qos_hdr *nullfunc;
2901 struct sk_buff *skb;
2902 int size = sizeof(*nullfunc);
2903 __le16 fc;
2904 bool qos;
2905 struct ieee80211_tx_info *info;
2906 struct sta_info *sta;
2907
2908 rcu_read_lock();
2909 sta = sta_info_get(sdata, peer);
2910 if (sta) {
2911 qos = test_sta_flag(sta, WLAN_STA_WME);
2912 rcu_read_unlock();
2913 } else {
2914 rcu_read_unlock();
2915 return -ENOLINK;
2916 }
2917
2918 if (qos) {
2919 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2920 IEEE80211_STYPE_QOS_NULLFUNC |
2921 IEEE80211_FCTL_FROMDS);
2922 } else {
2923 size -= 2;
2924 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2925 IEEE80211_STYPE_NULLFUNC |
2926 IEEE80211_FCTL_FROMDS);
2927 }
2928
2929 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2930 if (!skb)
2931 return -ENOMEM;
2932
2933 skb->dev = dev;
2934
2935 skb_reserve(skb, local->hw.extra_tx_headroom);
2936
2937 nullfunc = (void *) skb_put(skb, size);
2938 nullfunc->frame_control = fc;
2939 nullfunc->duration_id = 0;
2940 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2941 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2942 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2943 nullfunc->seq_ctrl = 0;
2944
2945 info = IEEE80211_SKB_CB(skb);
2946
2947 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2948 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2949
2950 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2951 skb->priority = 7;
2952 if (qos)
2953 nullfunc->qos_ctrl = cpu_to_le16(7);
2954
2955 local_bh_disable();
2956 ieee80211_xmit(sdata, skb);
2957 local_bh_enable();
2958
2959 *cookie = (unsigned long) skb;
2960 return 0;
2961 }
2962
2963 static struct ieee80211_channel *
2964 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2965 enum nl80211_channel_type *type)
2966 {
2967 struct ieee80211_local *local = wiphy_priv(wiphy);
2968
2969 *type = local->_oper_channel_type;
2970 return local->oper_channel;
2971 }
2972
2973 #ifdef CONFIG_PM
2974 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2975 {
2976 drv_set_wakeup(wiphy_priv(wiphy), enabled);
2977 }
2978 #endif
2979
2980 struct cfg80211_ops mac80211_config_ops = {
2981 .add_virtual_intf = ieee80211_add_iface,
2982 .del_virtual_intf = ieee80211_del_iface,
2983 .change_virtual_intf = ieee80211_change_iface,
2984 .add_key = ieee80211_add_key,
2985 .del_key = ieee80211_del_key,
2986 .get_key = ieee80211_get_key,
2987 .set_default_key = ieee80211_config_default_key,
2988 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2989 .start_ap = ieee80211_start_ap,
2990 .change_beacon = ieee80211_change_beacon,
2991 .stop_ap = ieee80211_stop_ap,
2992 .add_station = ieee80211_add_station,
2993 .del_station = ieee80211_del_station,
2994 .change_station = ieee80211_change_station,
2995 .get_station = ieee80211_get_station,
2996 .dump_station = ieee80211_dump_station,
2997 .dump_survey = ieee80211_dump_survey,
2998 #ifdef CONFIG_MAC80211_MESH
2999 .add_mpath = ieee80211_add_mpath,
3000 .del_mpath = ieee80211_del_mpath,
3001 .change_mpath = ieee80211_change_mpath,
3002 .get_mpath = ieee80211_get_mpath,
3003 .dump_mpath = ieee80211_dump_mpath,
3004 .update_mesh_config = ieee80211_update_mesh_config,
3005 .get_mesh_config = ieee80211_get_mesh_config,
3006 .join_mesh = ieee80211_join_mesh,
3007 .leave_mesh = ieee80211_leave_mesh,
3008 #endif
3009 .change_bss = ieee80211_change_bss,
3010 .set_txq_params = ieee80211_set_txq_params,
3011 .set_monitor_channel = ieee80211_set_monitor_channel,
3012 .suspend = ieee80211_suspend,
3013 .resume = ieee80211_resume,
3014 .scan = ieee80211_scan,
3015 .sched_scan_start = ieee80211_sched_scan_start,
3016 .sched_scan_stop = ieee80211_sched_scan_stop,
3017 .auth = ieee80211_auth,
3018 .assoc = ieee80211_assoc,
3019 .deauth = ieee80211_deauth,
3020 .disassoc = ieee80211_disassoc,
3021 .join_ibss = ieee80211_join_ibss,
3022 .leave_ibss = ieee80211_leave_ibss,
3023 .set_wiphy_params = ieee80211_set_wiphy_params,
3024 .set_tx_power = ieee80211_set_tx_power,
3025 .get_tx_power = ieee80211_get_tx_power,
3026 .set_wds_peer = ieee80211_set_wds_peer,
3027 .rfkill_poll = ieee80211_rfkill_poll,
3028 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3029 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3030 .set_power_mgmt = ieee80211_set_power_mgmt,
3031 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3032 .remain_on_channel = ieee80211_remain_on_channel,
3033 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3034 .mgmt_tx = ieee80211_mgmt_tx,
3035 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3036 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3037 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3038 .set_antenna = ieee80211_set_antenna,
3039 .get_antenna = ieee80211_get_antenna,
3040 .set_ringparam = ieee80211_set_ringparam,
3041 .get_ringparam = ieee80211_get_ringparam,
3042 .set_rekey_data = ieee80211_set_rekey_data,
3043 .tdls_oper = ieee80211_tdls_oper,
3044 .tdls_mgmt = ieee80211_tdls_mgmt,
3045 .probe_client = ieee80211_probe_client,
3046 .get_channel = ieee80211_wiphy_get_channel,
3047 .set_noack_map = ieee80211_set_noack_map,
3048 #ifdef CONFIG_PM
3049 .set_wakeup = ieee80211_set_wakeup,
3050 #endif
3051 .get_et_sset_count = ieee80211_get_et_sset_count,
3052 .get_et_stats = ieee80211_get_et_stats,
3053 .get_et_strings = ieee80211_get_et_strings,
3054 };
Linux kernel - Deliverables
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