Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
5394af4d | 3 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
f0706e82 JB |
4 | * Copyright 2004, Instant802 Networks, Inc. |
5 | * Copyright 2005, Devicescape Software, Inc. | |
6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
5b323edb | 14 | #include <linux/delay.h> |
f0706e82 JB |
15 | #include <linux/if_ether.h> |
16 | #include <linux/skbuff.h> | |
f0706e82 | 17 | #include <linux/if_arp.h> |
f0706e82 | 18 | #include <linux/etherdevice.h> |
d0709a65 | 19 | #include <linux/rtnetlink.h> |
10f644a4 | 20 | #include <linux/pm_qos_params.h> |
d91f36db | 21 | #include <linux/crc32.h> |
f0706e82 | 22 | #include <net/mac80211.h> |
472dbc45 | 23 | #include <asm/unaligned.h> |
60f8b39c | 24 | |
f0706e82 | 25 | #include "ieee80211_i.h" |
24487981 | 26 | #include "driver-ops.h" |
2c8dccc7 JB |
27 | #include "rate.h" |
28 | #include "led.h" | |
f0706e82 | 29 | |
a43abf29 | 30 | #define IEEE80211_MAX_PROBE_TRIES 5 |
b291ba11 JB |
31 | |
32 | /* | |
33 | * beacon loss detection timeout | |
34 | * XXX: should depend on beacon interval | |
35 | */ | |
36 | #define IEEE80211_BEACON_LOSS_TIME (2 * HZ) | |
37 | /* | |
38 | * Time the connection can be idle before we probe | |
39 | * it to see if we can still talk to the AP. | |
40 | */ | |
d1c5091f | 41 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
42 | /* |
43 | * Time we wait for a probe response after sending | |
44 | * a probe request because of beacon loss or for | |
45 | * checking the connection still works. | |
46 | */ | |
d1c5091f | 47 | #define IEEE80211_PROBE_WAIT (HZ / 2) |
f0706e82 | 48 | |
5bb644a0 JB |
49 | #define TMR_RUNNING_TIMER 0 |
50 | #define TMR_RUNNING_CHANSW 1 | |
51 | ||
77fdaa12 JB |
52 | /* |
53 | * All cfg80211 functions have to be called outside a locked | |
54 | * section so that they can acquire a lock themselves... This | |
55 | * is much simpler than queuing up things in cfg80211, but we | |
56 | * do need some indirection for that here. | |
57 | */ | |
58 | enum rx_mgmt_action { | |
59 | /* no action required */ | |
60 | RX_MGMT_NONE, | |
61 | ||
62 | /* caller must call cfg80211_send_rx_auth() */ | |
63 | RX_MGMT_CFG80211_AUTH, | |
64 | ||
65 | /* caller must call cfg80211_send_rx_assoc() */ | |
66 | RX_MGMT_CFG80211_ASSOC, | |
67 | ||
68 | /* caller must call cfg80211_send_deauth() */ | |
69 | RX_MGMT_CFG80211_DEAUTH, | |
70 | ||
71 | /* caller must call cfg80211_send_disassoc() */ | |
72 | RX_MGMT_CFG80211_DISASSOC, | |
73 | ||
5d1ec85f JB |
74 | /* caller must tell cfg80211 about internal error */ |
75 | RX_MGMT_CFG80211_ASSOC_ERROR, | |
77fdaa12 JB |
76 | }; |
77 | ||
5484e237 | 78 | /* utils */ |
77fdaa12 JB |
79 | static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) |
80 | { | |
81 | WARN_ON(!mutex_is_locked(&ifmgd->mtx)); | |
82 | } | |
83 | ||
ca386f31 JB |
84 | /* |
85 | * We can have multiple work items (and connection probing) | |
86 | * scheduling this timer, but we need to take care to only | |
87 | * reschedule it when it should fire _earlier_ than it was | |
88 | * asked for before, or if it's not pending right now. This | |
89 | * function ensures that. Note that it then is required to | |
90 | * run this function for all timeouts after the first one | |
91 | * has happened -- the work that runs from this timer will | |
92 | * do that. | |
93 | */ | |
94 | static void run_again(struct ieee80211_if_managed *ifmgd, | |
95 | unsigned long timeout) | |
96 | { | |
97 | ASSERT_MGD_MTX(ifmgd); | |
98 | ||
99 | if (!timer_pending(&ifmgd->timer) || | |
100 | time_before(timeout, ifmgd->timer.expires)) | |
101 | mod_timer(&ifmgd->timer, timeout); | |
102 | } | |
103 | ||
b291ba11 JB |
104 | static void mod_beacon_timer(struct ieee80211_sub_if_data *sdata) |
105 | { | |
106 | if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER) | |
107 | return; | |
108 | ||
109 | mod_timer(&sdata->u.mgd.bcn_mon_timer, | |
110 | round_jiffies_up(jiffies + IEEE80211_BEACON_LOSS_TIME)); | |
111 | } | |
112 | ||
5484e237 | 113 | static int ecw2cw(int ecw) |
60f8b39c | 114 | { |
5484e237 | 115 | return (1 << ecw) - 1; |
60f8b39c JB |
116 | } |
117 | ||
d5522e03 JB |
118 | /* |
119 | * ieee80211_enable_ht should be called only after the operating band | |
120 | * has been determined as ht configuration depends on the hw's | |
121 | * HT abilities for a specific band. | |
122 | */ | |
123 | static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, | |
124 | struct ieee80211_ht_info *hti, | |
77fdaa12 | 125 | const u8 *bssid, u16 ap_ht_cap_flags) |
d5522e03 JB |
126 | { |
127 | struct ieee80211_local *local = sdata->local; | |
128 | struct ieee80211_supported_band *sband; | |
d5522e03 JB |
129 | struct sta_info *sta; |
130 | u32 changed = 0; | |
9ed6bcce | 131 | u16 ht_opmode; |
d5522e03 JB |
132 | bool enable_ht = true, ht_changed; |
133 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; | |
134 | ||
135 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
136 | ||
d5522e03 JB |
137 | /* HT is not supported */ |
138 | if (!sband->ht_cap.ht_supported) | |
139 | enable_ht = false; | |
140 | ||
141 | /* check that channel matches the right operating channel */ | |
142 | if (local->hw.conf.channel->center_freq != | |
143 | ieee80211_channel_to_frequency(hti->control_chan)) | |
144 | enable_ht = false; | |
145 | ||
146 | if (enable_ht) { | |
147 | channel_type = NL80211_CHAN_HT20; | |
148 | ||
149 | if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && | |
150 | (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && | |
151 | (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { | |
152 | switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
153 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
768777ea LR |
154 | if (!(local->hw.conf.channel->flags & |
155 | IEEE80211_CHAN_NO_HT40PLUS)) | |
156 | channel_type = NL80211_CHAN_HT40PLUS; | |
d5522e03 JB |
157 | break; |
158 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
768777ea LR |
159 | if (!(local->hw.conf.channel->flags & |
160 | IEEE80211_CHAN_NO_HT40MINUS)) | |
161 | channel_type = NL80211_CHAN_HT40MINUS; | |
d5522e03 JB |
162 | break; |
163 | } | |
164 | } | |
165 | } | |
166 | ||
167 | ht_changed = conf_is_ht(&local->hw.conf) != enable_ht || | |
168 | channel_type != local->hw.conf.channel_type; | |
169 | ||
170 | local->oper_channel_type = channel_type; | |
171 | ||
172 | if (ht_changed) { | |
173 | /* channel_type change automatically detected */ | |
174 | ieee80211_hw_config(local, 0); | |
175 | ||
176 | rcu_read_lock(); | |
abe60632 | 177 | sta = sta_info_get(sdata, bssid); |
d5522e03 JB |
178 | if (sta) |
179 | rate_control_rate_update(local, sband, sta, | |
4fa00437 S |
180 | IEEE80211_RC_HT_CHANGED, |
181 | local->oper_channel_type); | |
d5522e03 | 182 | rcu_read_unlock(); |
d5522e03 JB |
183 | } |
184 | ||
185 | /* disable HT */ | |
186 | if (!enable_ht) | |
187 | return 0; | |
188 | ||
9ed6bcce | 189 | ht_opmode = le16_to_cpu(hti->operation_mode); |
d5522e03 JB |
190 | |
191 | /* if bss configuration changed store the new one */ | |
413ad50a JB |
192 | if (!sdata->ht_opmode_valid || |
193 | sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
d5522e03 | 194 | changed |= BSS_CHANGED_HT; |
9ed6bcce | 195 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
413ad50a | 196 | sdata->ht_opmode_valid = true; |
d5522e03 JB |
197 | } |
198 | ||
199 | return changed; | |
200 | } | |
201 | ||
9c6bd790 JB |
202 | /* frame sending functions */ |
203 | ||
ef422bc0 | 204 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
667503dd JB |
205 | const u8 *bssid, u16 stype, u16 reason, |
206 | void *cookie) | |
9ac19a90 JB |
207 | { |
208 | struct ieee80211_local *local = sdata->local; | |
46900298 | 209 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
210 | struct sk_buff *skb; |
211 | struct ieee80211_mgmt *mgmt; | |
9aed3cc1 | 212 | |
65fc73ac | 213 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
9ac19a90 | 214 | if (!skb) { |
ef422bc0 | 215 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
47846c9b | 216 | "deauth/disassoc frame\n", sdata->name); |
9ac19a90 JB |
217 | return; |
218 | } | |
219 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
220 | ||
221 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
222 | memset(mgmt, 0, 24); | |
77fdaa12 | 223 | memcpy(mgmt->da, bssid, ETH_ALEN); |
47846c9b | 224 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
77fdaa12 | 225 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
ef422bc0 | 226 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
9ac19a90 | 227 | skb_put(skb, 2); |
ef422bc0 | 228 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
9ac19a90 JB |
229 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
230 | ||
53b46b84 | 231 | if (stype == IEEE80211_STYPE_DEAUTH) |
ce470613 HS |
232 | if (cookie) |
233 | __cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); | |
234 | else | |
235 | cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); | |
53b46b84 | 236 | else |
ce470613 HS |
237 | if (cookie) |
238 | __cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); | |
239 | else | |
240 | cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); | |
62ae67be JB |
241 | if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED)) |
242 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
243 | ieee80211_tx_skb(sdata, skb); | |
9ac19a90 JB |
244 | } |
245 | ||
572e0012 KV |
246 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
247 | struct ieee80211_sub_if_data *sdata) | |
248 | { | |
572e0012 KV |
249 | struct ieee80211_pspoll *pspoll; |
250 | struct sk_buff *skb; | |
572e0012 | 251 | |
d8cd189e KV |
252 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
253 | if (!skb) | |
572e0012 | 254 | return; |
572e0012 | 255 | |
d8cd189e KV |
256 | pspoll = (struct ieee80211_pspoll *) skb->data; |
257 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 258 | |
62ae67be JB |
259 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
260 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
261 | } |
262 | ||
965bedad JB |
263 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
264 | struct ieee80211_sub_if_data *sdata, | |
265 | int powersave) | |
266 | { | |
267 | struct sk_buff *skb; | |
d8cd189e | 268 | struct ieee80211_hdr_3addr *nullfunc; |
965bedad | 269 | |
d8cd189e KV |
270 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
271 | if (!skb) | |
965bedad | 272 | return; |
965bedad | 273 | |
d8cd189e | 274 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 275 | if (powersave) |
d8cd189e | 276 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 277 | |
62ae67be JB |
278 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
279 | ieee80211_tx_skb(sdata, skb); | |
965bedad JB |
280 | } |
281 | ||
d524215f FF |
282 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
283 | struct ieee80211_sub_if_data *sdata) | |
284 | { | |
285 | struct sk_buff *skb; | |
286 | struct ieee80211_hdr *nullfunc; | |
287 | __le16 fc; | |
288 | ||
289 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
290 | return; | |
291 | ||
292 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
293 | if (!skb) { | |
294 | printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr " | |
295 | "nullfunc frame\n", sdata->name); | |
296 | return; | |
297 | } | |
298 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
299 | ||
300 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
301 | memset(nullfunc, 0, 30); | |
302 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
303 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
304 | nullfunc->frame_control = fc; | |
305 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
306 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
307 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
308 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
309 | ||
310 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
311 | ieee80211_tx_skb(sdata, skb); | |
312 | } | |
313 | ||
cc32abd4 JB |
314 | /* spectrum management related things */ |
315 | static void ieee80211_chswitch_work(struct work_struct *work) | |
316 | { | |
317 | struct ieee80211_sub_if_data *sdata = | |
318 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
cc32abd4 JB |
319 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
320 | ||
9607e6b6 | 321 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
322 | return; |
323 | ||
77fdaa12 JB |
324 | mutex_lock(&ifmgd->mtx); |
325 | if (!ifmgd->associated) | |
326 | goto out; | |
cc32abd4 JB |
327 | |
328 | sdata->local->oper_channel = sdata->local->csa_channel; | |
77fdaa12 JB |
329 | ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL); |
330 | ||
cc32abd4 | 331 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
0c1ad2ca | 332 | ifmgd->associated->channel = sdata->local->oper_channel; |
cc32abd4 | 333 | |
cc32abd4 JB |
334 | ieee80211_wake_queues_by_reason(&sdata->local->hw, |
335 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
77fdaa12 JB |
336 | out: |
337 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
338 | mutex_unlock(&ifmgd->mtx); | |
cc32abd4 JB |
339 | } |
340 | ||
341 | static void ieee80211_chswitch_timer(unsigned long data) | |
342 | { | |
343 | struct ieee80211_sub_if_data *sdata = | |
344 | (struct ieee80211_sub_if_data *) data; | |
345 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
346 | ||
5bb644a0 JB |
347 | if (sdata->local->quiescing) { |
348 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
349 | return; | |
350 | } | |
351 | ||
42935eca | 352 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); |
cc32abd4 JB |
353 | } |
354 | ||
355 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
356 | struct ieee80211_channel_sw_ie *sw_elem, | |
357 | struct ieee80211_bss *bss) | |
358 | { | |
0c1ad2ca JB |
359 | struct cfg80211_bss *cbss = |
360 | container_of((void *)bss, struct cfg80211_bss, priv); | |
cc32abd4 JB |
361 | struct ieee80211_channel *new_ch; |
362 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
363 | int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); | |
364 | ||
77fdaa12 JB |
365 | ASSERT_MGD_MTX(ifmgd); |
366 | ||
367 | if (!ifmgd->associated) | |
cc32abd4 JB |
368 | return; |
369 | ||
fbe9c429 | 370 | if (sdata->local->scanning) |
cc32abd4 JB |
371 | return; |
372 | ||
373 | /* Disregard subsequent beacons if we are already running a timer | |
374 | processing a CSA */ | |
375 | ||
376 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) | |
377 | return; | |
378 | ||
379 | new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); | |
380 | if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) | |
381 | return; | |
382 | ||
383 | sdata->local->csa_channel = new_ch; | |
384 | ||
385 | if (sw_elem->count <= 1) { | |
42935eca | 386 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); |
cc32abd4 JB |
387 | } else { |
388 | ieee80211_stop_queues_by_reason(&sdata->local->hw, | |
389 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
390 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; | |
391 | mod_timer(&ifmgd->chswitch_timer, | |
392 | jiffies + | |
393 | msecs_to_jiffies(sw_elem->count * | |
0c1ad2ca | 394 | cbss->beacon_interval)); |
cc32abd4 JB |
395 | } |
396 | } | |
397 | ||
398 | static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
399 | u16 capab_info, u8 *pwr_constr_elem, | |
400 | u8 pwr_constr_elem_len) | |
401 | { | |
402 | struct ieee80211_conf *conf = &sdata->local->hw.conf; | |
403 | ||
404 | if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
405 | return; | |
406 | ||
407 | /* Power constraint IE length should be 1 octet */ | |
408 | if (pwr_constr_elem_len != 1) | |
409 | return; | |
410 | ||
411 | if ((*pwr_constr_elem <= conf->channel->max_power) && | |
412 | (*pwr_constr_elem != sdata->local->power_constr_level)) { | |
413 | sdata->local->power_constr_level = *pwr_constr_elem; | |
414 | ieee80211_hw_config(sdata->local, 0); | |
415 | } | |
416 | } | |
417 | ||
965bedad JB |
418 | /* powersave */ |
419 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
420 | struct ieee80211_sub_if_data *sdata) | |
421 | { | |
422 | struct ieee80211_conf *conf = &local->hw.conf; | |
423 | ||
d5edaedc JB |
424 | /* |
425 | * If we are scanning right now then the parameters will | |
426 | * take effect when scan finishes. | |
427 | */ | |
fbe9c429 | 428 | if (local->scanning) |
d5edaedc JB |
429 | return; |
430 | ||
965bedad JB |
431 | if (conf->dynamic_ps_timeout > 0 && |
432 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
433 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
434 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
435 | } else { | |
436 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
437 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf VN |
438 | |
439 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { | |
440 | conf->flags |= IEEE80211_CONF_PS; | |
441 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
442 | } | |
965bedad JB |
443 | } |
444 | } | |
445 | ||
446 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
447 | { | |
448 | struct ieee80211_conf *conf = &local->hw.conf; | |
449 | ||
450 | if (local->ps_sdata) { | |
965bedad JB |
451 | ieee80211_enable_ps(local, local->ps_sdata); |
452 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
453 | conf->flags &= ~IEEE80211_CONF_PS; | |
454 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
455 | del_timer_sync(&local->dynamic_ps_timer); | |
456 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
457 | } | |
458 | } | |
459 | ||
460 | /* need to hold RTNL or interface lock */ | |
10f644a4 | 461 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
462 | { |
463 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
464 | int count = 0; | |
465 | ||
466 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
467 | local->ps_sdata = NULL; | |
468 | return; | |
469 | } | |
470 | ||
af6b6374 JB |
471 | if (!list_empty(&local->work_list)) { |
472 | local->ps_sdata = NULL; | |
473 | goto change; | |
474 | } | |
475 | ||
965bedad | 476 | list_for_each_entry(sdata, &local->interfaces, list) { |
9607e6b6 | 477 | if (!ieee80211_sdata_running(sdata)) |
965bedad JB |
478 | continue; |
479 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
480 | continue; | |
481 | found = sdata; | |
482 | count++; | |
483 | } | |
484 | ||
43f78531 | 485 | if (count == 1 && found->u.mgd.powersave && |
af6b6374 | 486 | found->u.mgd.associated && |
56007a02 | 487 | found->u.mgd.associated->beacon_ies && |
b291ba11 JB |
488 | !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL | |
489 | IEEE80211_STA_CONNECTION_POLL))) { | |
10f644a4 JB |
490 | s32 beaconint_us; |
491 | ||
492 | if (latency < 0) | |
493 | latency = pm_qos_requirement(PM_QOS_NETWORK_LATENCY); | |
494 | ||
495 | beaconint_us = ieee80211_tu_to_usec( | |
496 | found->vif.bss_conf.beacon_int); | |
497 | ||
04fe2037 | 498 | if (beaconint_us > latency) { |
10f644a4 | 499 | local->ps_sdata = NULL; |
04fe2037 | 500 | } else { |
56007a02 | 501 | struct ieee80211_bss *bss; |
04fe2037 | 502 | int maxslp = 1; |
56007a02 | 503 | u8 dtimper; |
04fe2037 | 504 | |
56007a02 JB |
505 | bss = (void *)found->u.mgd.associated->priv; |
506 | dtimper = bss->dtim_period; | |
507 | ||
508 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
509 | if (!dtimper) | |
510 | dtimper = 1; | |
511 | else if (dtimper > 1) | |
04fe2037 JB |
512 | maxslp = min_t(int, dtimper, |
513 | latency / beaconint_us); | |
514 | ||
9ccebe61 | 515 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 516 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 517 | local->ps_sdata = found; |
04fe2037 | 518 | } |
10f644a4 | 519 | } else { |
965bedad | 520 | local->ps_sdata = NULL; |
10f644a4 | 521 | } |
965bedad | 522 | |
af6b6374 | 523 | change: |
965bedad JB |
524 | ieee80211_change_ps(local); |
525 | } | |
526 | ||
527 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) | |
528 | { | |
529 | struct ieee80211_local *local = | |
530 | container_of(work, struct ieee80211_local, | |
531 | dynamic_ps_disable_work); | |
532 | ||
533 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
534 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
535 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
536 | } | |
537 | ||
538 | ieee80211_wake_queues_by_reason(&local->hw, | |
539 | IEEE80211_QUEUE_STOP_REASON_PS); | |
540 | } | |
541 | ||
542 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
543 | { | |
544 | struct ieee80211_local *local = | |
545 | container_of(work, struct ieee80211_local, | |
546 | dynamic_ps_enable_work); | |
547 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
375177bf | 548 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad JB |
549 | |
550 | /* can only happen when PS was just disabled anyway */ | |
551 | if (!sdata) | |
552 | return; | |
553 | ||
554 | if (local->hw.conf.flags & IEEE80211_CONF_PS) | |
555 | return; | |
556 | ||
375177bf VN |
557 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
558 | (!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED))) | |
965bedad JB |
559 | ieee80211_send_nullfunc(local, sdata, 1); |
560 | ||
375177bf VN |
561 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) || |
562 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { | |
563 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
564 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
565 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
566 | } | |
965bedad JB |
567 | } |
568 | ||
569 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
570 | { | |
571 | struct ieee80211_local *local = (void *) data; | |
572 | ||
78f1a8b7 | 573 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
574 | return; |
575 | ||
42935eca | 576 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
577 | } |
578 | ||
60f8b39c | 579 | /* MLME */ |
f698d856 | 580 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
46900298 | 581 | struct ieee80211_if_managed *ifmgd, |
f0706e82 JB |
582 | u8 *wmm_param, size_t wmm_param_len) |
583 | { | |
f0706e82 JB |
584 | struct ieee80211_tx_queue_params params; |
585 | size_t left; | |
586 | int count; | |
ab13315a | 587 | u8 *pos, uapsd_queues = 0; |
f0706e82 | 588 | |
e1b3ec1a SG |
589 | if (!local->ops->conf_tx) |
590 | return; | |
591 | ||
af6b6374 | 592 | if (local->hw.queues < 4) |
3434fbd3 JB |
593 | return; |
594 | ||
595 | if (!wmm_param) | |
596 | return; | |
597 | ||
f0706e82 JB |
598 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
599 | return; | |
ab13315a KV |
600 | |
601 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
50ae0cf1 | 602 | uapsd_queues = local->uapsd_queues; |
ab13315a | 603 | |
f0706e82 | 604 | count = wmm_param[6] & 0x0f; |
46900298 | 605 | if (count == ifmgd->wmm_last_param_set) |
f0706e82 | 606 | return; |
46900298 | 607 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
608 | |
609 | pos = wmm_param + 8; | |
610 | left = wmm_param_len - 8; | |
611 | ||
612 | memset(¶ms, 0, sizeof(params)); | |
613 | ||
f0706e82 JB |
614 | local->wmm_acm = 0; |
615 | for (; left >= 4; left -= 4, pos += 4) { | |
616 | int aci = (pos[0] >> 5) & 0x03; | |
617 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 618 | bool uapsd = false; |
f0706e82 JB |
619 | int queue; |
620 | ||
621 | switch (aci) { | |
0eeb59fe | 622 | case 1: /* AC_BK */ |
e100bb64 | 623 | queue = 3; |
988c0f72 | 624 | if (acm) |
0eeb59fe | 625 | local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
626 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
627 | uapsd = true; | |
f0706e82 | 628 | break; |
0eeb59fe | 629 | case 2: /* AC_VI */ |
e100bb64 | 630 | queue = 1; |
988c0f72 | 631 | if (acm) |
0eeb59fe | 632 | local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
633 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
634 | uapsd = true; | |
f0706e82 | 635 | break; |
0eeb59fe | 636 | case 3: /* AC_VO */ |
e100bb64 | 637 | queue = 0; |
988c0f72 | 638 | if (acm) |
0eeb59fe | 639 | local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
640 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
641 | uapsd = true; | |
f0706e82 | 642 | break; |
0eeb59fe | 643 | case 0: /* AC_BE */ |
f0706e82 | 644 | default: |
e100bb64 | 645 | queue = 2; |
988c0f72 | 646 | if (acm) |
0eeb59fe | 647 | local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
648 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
649 | uapsd = true; | |
f0706e82 JB |
650 | break; |
651 | } | |
652 | ||
653 | params.aifs = pos[0] & 0x0f; | |
654 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
655 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 656 | params.txop = get_unaligned_le16(pos + 2); |
ab13315a KV |
657 | params.uapsd = uapsd; |
658 | ||
f4ea83dd | 659 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 660 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
ab13315a | 661 | "cWmin=%d cWmax=%d txop=%d uapsd=%d\n", |
0bffe40f | 662 | wiphy_name(local->hw.wiphy), queue, aci, acm, |
ab13315a KV |
663 | params.aifs, params.cw_min, params.cw_max, params.txop, |
664 | params.uapsd); | |
3330d7be | 665 | #endif |
e1b3ec1a | 666 | if (drv_conf_tx(local, queue, ¶ms)) |
f0706e82 | 667 | printk(KERN_DEBUG "%s: failed to set TX queue " |
0bffe40f JB |
668 | "parameters for queue %d\n", |
669 | wiphy_name(local->hw.wiphy), queue); | |
f0706e82 | 670 | } |
e1b3ec1a SG |
671 | |
672 | /* enable WMM or activate new settings */ | |
673 | local->hw.conf.flags |= IEEE80211_CONF_QOS; | |
674 | drv_config(local, IEEE80211_CONF_CHANGE_QOS); | |
f0706e82 JB |
675 | } |
676 | ||
7a5158ef JB |
677 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
678 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 679 | { |
bda3933a | 680 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 681 | u32 changed = 0; |
7a5158ef JB |
682 | bool use_protection; |
683 | bool use_short_preamble; | |
684 | bool use_short_slot; | |
685 | ||
686 | if (erp_valid) { | |
687 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
688 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
689 | } else { | |
690 | use_protection = false; | |
691 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
692 | } | |
693 | ||
694 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
43d35343 FF |
695 | if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) |
696 | use_short_slot = true; | |
5628221c | 697 | |
471b3efd | 698 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
699 | bss_conf->use_cts_prot = use_protection; |
700 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 701 | } |
7e9ed188 | 702 | |
d43c7b37 | 703 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 704 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 705 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 706 | } |
d9430a32 | 707 | |
7a5158ef | 708 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
709 | bss_conf->use_short_slot = use_short_slot; |
710 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
711 | } |
712 | ||
713 | return changed; | |
714 | } | |
715 | ||
f698d856 | 716 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 717 | struct cfg80211_bss *cbss, |
ae5eb026 | 718 | u32 bss_info_changed) |
f0706e82 | 719 | { |
0c1ad2ca | 720 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 721 | struct ieee80211_local *local = sdata->local; |
d6f2da5b | 722 | |
ae5eb026 | 723 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 724 | /* set timing information */ |
0c1ad2ca JB |
725 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; |
726 | sdata->vif.bss_conf.timestamp = cbss->tsf; | |
5628221c | 727 | |
77fdaa12 JB |
728 | bss_info_changed |= BSS_CHANGED_BEACON_INT; |
729 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, | |
0c1ad2ca | 730 | cbss->capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 731 | |
0c1ad2ca JB |
732 | sdata->u.mgd.associated = cbss; |
733 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 734 | |
b291ba11 JB |
735 | /* just to be sure */ |
736 | sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL | | |
737 | IEEE80211_STA_BEACON_POLL); | |
738 | ||
0183826b JB |
739 | /* |
740 | * Always handle WMM once after association regardless | |
741 | * of the first value the AP uses. Setting -1 here has | |
742 | * that effect because the AP values is an unsigned | |
743 | * 4-bit value. | |
744 | */ | |
745 | sdata->u.mgd.wmm_last_param_set = -1; | |
746 | ||
9ac19a90 | 747 | ieee80211_led_assoc(local, 1); |
9306102e | 748 | |
bda3933a | 749 | sdata->vif.bss_conf.assoc = 1; |
96dd22ac JB |
750 | /* |
751 | * For now just always ask the driver to update the basic rateset | |
752 | * when we have associated, we aren't checking whether it actually | |
753 | * changed or not. | |
754 | */ | |
ae5eb026 | 755 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
9cef8737 JB |
756 | |
757 | /* And the BSSID changed - we're associated now */ | |
758 | bss_info_changed |= BSS_CHANGED_BSSID; | |
759 | ||
a97c13c3 JO |
760 | /* Tell the driver to monitor connection quality (if supported) */ |
761 | if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) && | |
762 | sdata->vif.bss_conf.cqm_rssi_thold) | |
763 | bss_info_changed |= BSS_CHANGED_CQM; | |
764 | ||
ae5eb026 | 765 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 766 | |
056508dc JB |
767 | mutex_lock(&local->iflist_mtx); |
768 | ieee80211_recalc_ps(local, -1); | |
0f78231b | 769 | ieee80211_recalc_smps(local, sdata); |
056508dc | 770 | mutex_unlock(&local->iflist_mtx); |
e0cb686f | 771 | |
8a5b33f5 | 772 | netif_tx_start_all_queues(sdata->dev); |
9ac19a90 | 773 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
774 | } |
775 | ||
63f170e0 | 776 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata) |
aa458d17 | 777 | { |
46900298 | 778 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 TW |
779 | struct ieee80211_local *local = sdata->local; |
780 | struct sta_info *sta; | |
e0cb686f | 781 | u32 changed = 0, config_changed = 0; |
b291ba11 | 782 | u8 bssid[ETH_ALEN]; |
aa458d17 | 783 | |
77fdaa12 JB |
784 | ASSERT_MGD_MTX(ifmgd); |
785 | ||
b291ba11 JB |
786 | if (WARN_ON(!ifmgd->associated)) |
787 | return; | |
788 | ||
0c1ad2ca | 789 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
b291ba11 | 790 | |
77fdaa12 JB |
791 | ifmgd->associated = NULL; |
792 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
793 | ||
794 | /* | |
795 | * we need to commit the associated = NULL change because the | |
796 | * scan code uses that to determine whether this iface should | |
797 | * go to/wake up from powersave or not -- and could otherwise | |
798 | * wake the queues erroneously. | |
799 | */ | |
800 | smp_mb(); | |
801 | ||
802 | /* | |
803 | * Thus, we can only afterwards stop the queues -- to account | |
804 | * for the case where another CPU is finishing a scan at this | |
805 | * time -- we don't want the scan code to enable queues. | |
806 | */ | |
aa458d17 | 807 | |
8a5b33f5 | 808 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
809 | netif_carrier_off(sdata->dev); |
810 | ||
1fa6f4af | 811 | rcu_read_lock(); |
abe60632 | 812 | sta = sta_info_get(sdata, bssid); |
4cad6c7c S |
813 | if (sta) { |
814 | set_sta_flags(sta, WLAN_STA_DISASSOC); | |
1fa6f4af | 815 | ieee80211_sta_tear_down_BA_sessions(sta); |
4cad6c7c | 816 | } |
1fa6f4af | 817 | rcu_read_unlock(); |
aa458d17 | 818 | |
f5e5bf25 TW |
819 | changed |= ieee80211_reset_erp_info(sdata); |
820 | ||
f5e5bf25 | 821 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
822 | changed |= BSS_CHANGED_ASSOC; |
823 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 824 | |
aa837e1d JB |
825 | ieee80211_set_wmm_default(sdata); |
826 | ||
4797938c | 827 | /* channel(_type) changes are handled by ieee80211_hw_config */ |
094d05dc | 828 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
e0cb686f | 829 | |
413ad50a JB |
830 | /* on the next assoc, re-program HT parameters */ |
831 | sdata->ht_opmode_valid = false; | |
832 | ||
a8302de9 VT |
833 | local->power_constr_level = 0; |
834 | ||
520eb820 KV |
835 | del_timer_sync(&local->dynamic_ps_timer); |
836 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
837 | ||
e0cb686f KV |
838 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
839 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
840 | config_changed |= IEEE80211_CONF_CHANGE_PS; | |
841 | } | |
ae5eb026 | 842 | |
e0cb686f | 843 | ieee80211_hw_config(local, config_changed); |
9cef8737 JB |
844 | |
845 | /* And the BSSID changed -- not very interesting here */ | |
846 | changed |= BSS_CHANGED_BSSID; | |
ae5eb026 | 847 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 848 | |
34e89507 | 849 | sta_info_destroy_addr(sdata, bssid); |
aa458d17 | 850 | } |
f0706e82 | 851 | |
3cf335d5 KV |
852 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
853 | struct ieee80211_hdr *hdr) | |
854 | { | |
855 | /* | |
856 | * We can postpone the mgd.timer whenever receiving unicast frames | |
857 | * from AP because we know that the connection is working both ways | |
858 | * at that time. But multicast frames (and hence also beacons) must | |
859 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
860 | * data idle periods for sending the periodic probe request to the |
861 | * AP we're connected to. | |
3cf335d5 | 862 | */ |
b291ba11 JB |
863 | if (is_multicast_ether_addr(hdr->addr1)) |
864 | return; | |
865 | ||
1e4dcd01 JO |
866 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
867 | return; | |
868 | ||
b291ba11 JB |
869 | mod_timer(&sdata->u.mgd.conn_mon_timer, |
870 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
3cf335d5 | 871 | } |
f0706e82 | 872 | |
a43abf29 ML |
873 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
874 | { | |
875 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
876 | const u8 *ssid; | |
877 | ||
0c1ad2ca JB |
878 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
879 | ieee80211_send_probe_req(sdata, ifmgd->associated->bssid, | |
a43abf29 ML |
880 | ssid + 2, ssid[1], NULL, 0); |
881 | ||
882 | ifmgd->probe_send_count++; | |
883 | ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT; | |
884 | run_again(ifmgd, ifmgd->probe_timeout); | |
885 | } | |
886 | ||
b291ba11 JB |
887 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
888 | bool beacon) | |
04de8381 | 889 | { |
04de8381 | 890 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 891 | bool already = false; |
34bfc411 | 892 | |
9607e6b6 | 893 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
894 | return; |
895 | ||
91a3bd76 LR |
896 | if (sdata->local->scanning) |
897 | return; | |
898 | ||
b8bc4b0a JB |
899 | if (sdata->local->tmp_channel) |
900 | return; | |
901 | ||
77fdaa12 JB |
902 | mutex_lock(&ifmgd->mtx); |
903 | ||
904 | if (!ifmgd->associated) | |
905 | goto out; | |
906 | ||
a860402d | 907 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
b291ba11 JB |
908 | if (beacon && net_ratelimit()) |
909 | printk(KERN_DEBUG "%s: detected beacon loss from AP " | |
47846c9b | 910 | "- sending probe request\n", sdata->name); |
a860402d | 911 | #endif |
04de8381 | 912 | |
b291ba11 JB |
913 | /* |
914 | * The driver/our work has already reported this event or the | |
915 | * connection monitoring has kicked in and we have already sent | |
916 | * a probe request. Or maybe the AP died and the driver keeps | |
917 | * reporting until we disassociate... | |
918 | * | |
919 | * In either case we have to ignore the current call to this | |
920 | * function (except for setting the correct probe reason bit) | |
921 | * because otherwise we would reset the timer every time and | |
922 | * never check whether we received a probe response! | |
923 | */ | |
924 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | | |
925 | IEEE80211_STA_CONNECTION_POLL)) | |
926 | already = true; | |
927 | ||
928 | if (beacon) | |
929 | ifmgd->flags |= IEEE80211_STA_BEACON_POLL; | |
930 | else | |
931 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; | |
932 | ||
933 | if (already) | |
934 | goto out; | |
935 | ||
4e751843 JB |
936 | mutex_lock(&sdata->local->iflist_mtx); |
937 | ieee80211_recalc_ps(sdata->local, -1); | |
938 | mutex_unlock(&sdata->local->iflist_mtx); | |
939 | ||
a43abf29 ML |
940 | ifmgd->probe_send_count = 0; |
941 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 JB |
942 | out: |
943 | mutex_unlock(&ifmgd->mtx); | |
04de8381 KV |
944 | } |
945 | ||
1e4dcd01 JO |
946 | static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata) |
947 | { | |
948 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
949 | struct ieee80211_local *local = sdata->local; | |
950 | u8 bssid[ETH_ALEN]; | |
951 | ||
952 | mutex_lock(&ifmgd->mtx); | |
953 | if (!ifmgd->associated) { | |
954 | mutex_unlock(&ifmgd->mtx); | |
955 | return; | |
956 | } | |
957 | ||
958 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); | |
959 | ||
960 | printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid); | |
961 | ||
962 | ieee80211_set_disassoc(sdata); | |
963 | ieee80211_recalc_idle(local); | |
964 | mutex_unlock(&ifmgd->mtx); | |
965 | /* | |
966 | * must be outside lock due to cfg80211, | |
967 | * but that's not a problem. | |
968 | */ | |
969 | ieee80211_send_deauth_disassoc(sdata, bssid, | |
970 | IEEE80211_STYPE_DEAUTH, | |
971 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
972 | NULL); | |
973 | } | |
974 | ||
975 | void ieee80211_beacon_connection_loss_work(struct work_struct *work) | |
b291ba11 JB |
976 | { |
977 | struct ieee80211_sub_if_data *sdata = | |
978 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 979 | u.mgd.beacon_connection_loss_work); |
b291ba11 | 980 | |
1e4dcd01 JO |
981 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
982 | __ieee80211_connection_loss(sdata); | |
983 | else | |
984 | ieee80211_mgd_probe_ap(sdata, true); | |
b291ba11 JB |
985 | } |
986 | ||
04de8381 KV |
987 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
988 | { | |
989 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 990 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 991 | |
1e4dcd01 JO |
992 | WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR); |
993 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); | |
04de8381 KV |
994 | } |
995 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
996 | ||
1e4dcd01 JO |
997 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
998 | { | |
999 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1000 | struct ieee80211_hw *hw = &sdata->local->hw; | |
1001 | ||
1002 | WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR)); | |
1003 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); | |
1004 | } | |
1005 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
1006 | ||
1007 | ||
77fdaa12 JB |
1008 | static enum rx_mgmt_action __must_check |
1009 | ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, | |
77fdaa12 | 1010 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 1011 | { |
46900298 | 1012 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 1013 | const u8 *bssid = NULL; |
f0706e82 JB |
1014 | u16 reason_code; |
1015 | ||
f4ea83dd | 1016 | if (len < 24 + 2) |
77fdaa12 | 1017 | return RX_MGMT_NONE; |
f0706e82 | 1018 | |
77fdaa12 JB |
1019 | ASSERT_MGD_MTX(ifmgd); |
1020 | ||
0c1ad2ca | 1021 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
1022 | |
1023 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1024 | ||
77fdaa12 | 1025 | printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n", |
47846c9b | 1026 | sdata->name, bssid, reason_code); |
77fdaa12 | 1027 | |
63f170e0 JB |
1028 | ieee80211_set_disassoc(sdata); |
1029 | ieee80211_recalc_idle(sdata->local); | |
f0706e82 | 1030 | |
77fdaa12 | 1031 | return RX_MGMT_CFG80211_DEAUTH; |
f0706e82 JB |
1032 | } |
1033 | ||
1034 | ||
77fdaa12 JB |
1035 | static enum rx_mgmt_action __must_check |
1036 | ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, | |
1037 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 1038 | { |
46900298 | 1039 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1040 | u16 reason_code; |
1041 | ||
f4ea83dd | 1042 | if (len < 24 + 2) |
77fdaa12 | 1043 | return RX_MGMT_NONE; |
f0706e82 | 1044 | |
77fdaa12 JB |
1045 | ASSERT_MGD_MTX(ifmgd); |
1046 | ||
1047 | if (WARN_ON(!ifmgd->associated)) | |
1048 | return RX_MGMT_NONE; | |
1049 | ||
0c1ad2ca | 1050 | if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN))) |
77fdaa12 | 1051 | return RX_MGMT_NONE; |
f0706e82 JB |
1052 | |
1053 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1054 | ||
0ff71613 | 1055 | printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n", |
47846c9b | 1056 | sdata->name, mgmt->sa, reason_code); |
f0706e82 | 1057 | |
63f170e0 | 1058 | ieee80211_set_disassoc(sdata); |
bc83b681 | 1059 | ieee80211_recalc_idle(sdata->local); |
77fdaa12 | 1060 | return RX_MGMT_CFG80211_DISASSOC; |
f0706e82 JB |
1061 | } |
1062 | ||
1063 | ||
af6b6374 JB |
1064 | static bool ieee80211_assoc_success(struct ieee80211_work *wk, |
1065 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 1066 | { |
af6b6374 | 1067 | struct ieee80211_sub_if_data *sdata = wk->sdata; |
46900298 | 1068 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 1069 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1070 | struct ieee80211_supported_band *sband; |
f0706e82 | 1071 | struct sta_info *sta; |
0c1ad2ca | 1072 | struct cfg80211_bss *cbss = wk->assoc.bss; |
af6b6374 | 1073 | u8 *pos; |
881d948c | 1074 | u32 rates, basic_rates; |
af6b6374 | 1075 | u16 capab_info, aid; |
f0706e82 | 1076 | struct ieee802_11_elems elems; |
bda3933a | 1077 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
ae5eb026 | 1078 | u32 changed = 0; |
5d1ec85f JB |
1079 | int i, j, err; |
1080 | bool have_higher_than_11mbit = false; | |
ae5eb026 | 1081 | u16 ap_ht_cap_flags; |
f0706e82 | 1082 | |
af6b6374 | 1083 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 1084 | |
f0706e82 | 1085 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 1086 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 1087 | |
1dd84aa2 JB |
1088 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1089 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
47846c9b | 1090 | "set\n", sdata->name, aid); |
1dd84aa2 JB |
1091 | aid &= ~(BIT(15) | BIT(14)); |
1092 | ||
af6b6374 JB |
1093 | pos = mgmt->u.assoc_resp.variable; |
1094 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
1095 | ||
f0706e82 JB |
1096 | if (!elems.supp_rates) { |
1097 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
47846c9b | 1098 | sdata->name); |
af6b6374 | 1099 | return false; |
f0706e82 JB |
1100 | } |
1101 | ||
46900298 | 1102 | ifmgd->aid = aid; |
f0706e82 | 1103 | |
0c1ad2ca | 1104 | sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); |
f0706e82 | 1105 | if (!sta) { |
5d1ec85f JB |
1106 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" |
1107 | " the AP\n", sdata->name); | |
af6b6374 | 1108 | return false; |
77fdaa12 | 1109 | } |
05e5e883 | 1110 | |
5d1ec85f JB |
1111 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | |
1112 | WLAN_STA_ASSOC_AP); | |
1113 | if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) | |
1114 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); | |
1115 | ||
60f8b39c JB |
1116 | rates = 0; |
1117 | basic_rates = 0; | |
1118 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1119 | |
60f8b39c JB |
1120 | for (i = 0; i < elems.supp_rates_len; i++) { |
1121 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
d61272cb | 1122 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
f709fc69 | 1123 | |
60f8b39c JB |
1124 | if (rate > 110) |
1125 | have_higher_than_11mbit = true; | |
1126 | ||
1127 | for (j = 0; j < sband->n_bitrates; j++) { | |
d61272cb | 1128 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1129 | rates |= BIT(j); |
d61272cb TW |
1130 | if (is_basic) |
1131 | basic_rates |= BIT(j); | |
1132 | break; | |
1133 | } | |
f709fc69 | 1134 | } |
f709fc69 LCC |
1135 | } |
1136 | ||
60f8b39c JB |
1137 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1138 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
7e0986c1 | 1139 | bool is_basic = !!(elems.ext_supp_rates[i] & 0x80); |
f0706e82 | 1140 | |
60f8b39c JB |
1141 | if (rate > 110) |
1142 | have_higher_than_11mbit = true; | |
f0706e82 | 1143 | |
60f8b39c | 1144 | for (j = 0; j < sband->n_bitrates; j++) { |
d61272cb | 1145 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1146 | rates |= BIT(j); |
d61272cb TW |
1147 | if (is_basic) |
1148 | basic_rates |= BIT(j); | |
1149 | break; | |
1150 | } | |
60f8b39c | 1151 | } |
1ebebea8 | 1152 | } |
f0706e82 | 1153 | |
323ce79a | 1154 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
bda3933a | 1155 | sdata->vif.bss_conf.basic_rates = basic_rates; |
60f8b39c JB |
1156 | |
1157 | /* cf. IEEE 802.11 9.2.12 */ | |
1158 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1159 | have_higher_than_11mbit) | |
1160 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1161 | else | |
1162 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1163 | |
ab1faead | 1164 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) |
ae5eb026 | 1165 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
d9fe60de | 1166 | elems.ht_cap_elem, &sta->sta.ht_cap); |
ae5eb026 JB |
1167 | |
1168 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
f0706e82 | 1169 | |
4b7679a5 | 1170 | rate_control_rate_init(sta); |
f0706e82 | 1171 | |
46900298 | 1172 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
5394af4d JM |
1173 | set_sta_flags(sta, WLAN_STA_MFP); |
1174 | ||
ddf4ac53 | 1175 | if (elems.wmm_param) |
60f8b39c | 1176 | set_sta_flags(sta, WLAN_STA_WME); |
ddf4ac53 | 1177 | |
5d1ec85f JB |
1178 | err = sta_info_insert(sta); |
1179 | sta = NULL; | |
1180 | if (err) { | |
1181 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1182 | " the AP (error %d)\n", sdata->name, err); | |
90be561b | 1183 | return false; |
ddf4ac53 JB |
1184 | } |
1185 | ||
ddf4ac53 | 1186 | if (elems.wmm_param) |
46900298 | 1187 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
60f8b39c | 1188 | elems.wmm_param_len); |
aa837e1d JB |
1189 | else |
1190 | ieee80211_set_wmm_default(sdata); | |
f0706e82 | 1191 | |
e4da8c37 JB |
1192 | local->oper_channel = wk->chan; |
1193 | ||
ae5eb026 | 1194 | if (elems.ht_info_elem && elems.wmm_param && |
af6b6374 | 1195 | (sdata->local->hw.queues >= 4) && |
ab1faead | 1196 | !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) |
ae5eb026 | 1197 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
0c1ad2ca | 1198 | cbss->bssid, ap_ht_cap_flags); |
ae5eb026 | 1199 | |
60f8b39c JB |
1200 | /* set AID and assoc capability, |
1201 | * ieee80211_set_associated() will tell the driver */ | |
1202 | bss_conf->aid = aid; | |
1203 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 1204 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 1205 | |
d524215f FF |
1206 | /* |
1207 | * If we're using 4-addr mode, let the AP know that we're | |
1208 | * doing so, so that it can create the STA VLAN on its side | |
1209 | */ | |
1210 | if (ifmgd->use_4addr) | |
1211 | ieee80211_send_4addr_nullfunc(local, sdata); | |
1212 | ||
15b7b062 | 1213 | /* |
b291ba11 JB |
1214 | * Start timer to probe the connection to the AP now. |
1215 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 1216 | */ |
b291ba11 JB |
1217 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
1218 | mod_beacon_timer(sdata); | |
15b7b062 | 1219 | |
af6b6374 | 1220 | return true; |
f0706e82 JB |
1221 | } |
1222 | ||
1223 | ||
98c8fccf JB |
1224 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1225 | struct ieee80211_mgmt *mgmt, | |
1226 | size_t len, | |
1227 | struct ieee80211_rx_status *rx_status, | |
1228 | struct ieee802_11_elems *elems, | |
1229 | bool beacon) | |
1230 | { | |
1231 | struct ieee80211_local *local = sdata->local; | |
1232 | int freq; | |
c2b13452 | 1233 | struct ieee80211_bss *bss; |
98c8fccf | 1234 | struct ieee80211_channel *channel; |
56007a02 JB |
1235 | bool need_ps = false; |
1236 | ||
1237 | if (sdata->u.mgd.associated) { | |
1238 | bss = (void *)sdata->u.mgd.associated->priv; | |
1239 | /* not previously set so we may need to recalc */ | |
1240 | need_ps = !bss->dtim_period; | |
1241 | } | |
98c8fccf JB |
1242 | |
1243 | if (elems->ds_params && elems->ds_params_len == 1) | |
1244 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1245 | else | |
1246 | freq = rx_status->freq; | |
1247 | ||
1248 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1249 | ||
1250 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1251 | return; | |
1252 | ||
98c8fccf | 1253 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
2a519311 | 1254 | channel, beacon); |
77fdaa12 JB |
1255 | if (bss) |
1256 | ieee80211_rx_bss_put(local, bss); | |
1257 | ||
1258 | if (!sdata->u.mgd.associated) | |
98c8fccf JB |
1259 | return; |
1260 | ||
56007a02 JB |
1261 | if (need_ps) { |
1262 | mutex_lock(&local->iflist_mtx); | |
1263 | ieee80211_recalc_ps(local, -1); | |
1264 | mutex_unlock(&local->iflist_mtx); | |
1265 | } | |
1266 | ||
c481ec97 | 1267 | if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && |
0c1ad2ca | 1268 | (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, |
77fdaa12 | 1269 | ETH_ALEN) == 0)) { |
c481ec97 S |
1270 | struct ieee80211_channel_sw_ie *sw_elem = |
1271 | (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; | |
cc32abd4 | 1272 | ieee80211_sta_process_chanswitch(sdata, sw_elem, bss); |
c481ec97 | 1273 | } |
f0706e82 JB |
1274 | } |
1275 | ||
1276 | ||
f698d856 | 1277 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 1278 | struct sk_buff *skb) |
f0706e82 | 1279 | { |
af6b6374 | 1280 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 1281 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
1282 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
1283 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
1284 | struct ieee802_11_elems elems; |
1285 | ||
15b7b062 KV |
1286 | ifmgd = &sdata->u.mgd; |
1287 | ||
77fdaa12 JB |
1288 | ASSERT_MGD_MTX(ifmgd); |
1289 | ||
47846c9b | 1290 | if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) |
8e7cdbb6 TW |
1291 | return; /* ignore ProbeResp to foreign address */ |
1292 | ||
ae6a44e3 EK |
1293 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
1294 | if (baselen > len) | |
1295 | return; | |
1296 | ||
1297 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
1298 | &elems); | |
1299 | ||
98c8fccf | 1300 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e | 1301 | |
77fdaa12 | 1302 | if (ifmgd->associated && |
0c1ad2ca | 1303 | memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0 && |
b291ba11 JB |
1304 | ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
1305 | IEEE80211_STA_CONNECTION_POLL)) { | |
1306 | ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL | | |
1307 | IEEE80211_STA_BEACON_POLL); | |
4e751843 JB |
1308 | mutex_lock(&sdata->local->iflist_mtx); |
1309 | ieee80211_recalc_ps(sdata->local, -1); | |
1310 | mutex_unlock(&sdata->local->iflist_mtx); | |
b291ba11 JB |
1311 | /* |
1312 | * We've received a probe response, but are not sure whether | |
1313 | * we have or will be receiving any beacons or data, so let's | |
1314 | * schedule the timers again, just in case. | |
1315 | */ | |
1316 | mod_beacon_timer(sdata); | |
1317 | mod_timer(&ifmgd->conn_mon_timer, | |
1318 | round_jiffies_up(jiffies + | |
1319 | IEEE80211_CONNECTION_IDLE_TIME)); | |
4e751843 | 1320 | } |
f0706e82 JB |
1321 | } |
1322 | ||
d91f36db JB |
1323 | /* |
1324 | * This is the canonical list of information elements we care about, | |
1325 | * the filter code also gives us all changes to the Microsoft OUI | |
1326 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
1327 | * | |
1328 | * We implement beacon filtering in software since that means we can | |
1329 | * avoid processing the frame here and in cfg80211, and userspace | |
1330 | * will not be able to tell whether the hardware supports it or not. | |
1331 | * | |
1332 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
1333 | * add items it requires. It also needs to be able to tell us to | |
1334 | * look out for other vendor IEs. | |
1335 | */ | |
1336 | static const u64 care_about_ies = | |
1d4df3a5 JB |
1337 | (1ULL << WLAN_EID_COUNTRY) | |
1338 | (1ULL << WLAN_EID_ERP_INFO) | | |
1339 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
1340 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
1341 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
1342 | (1ULL << WLAN_EID_HT_INFORMATION); | |
d91f36db | 1343 | |
f698d856 | 1344 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1345 | struct ieee80211_mgmt *mgmt, |
1346 | size_t len, | |
1347 | struct ieee80211_rx_status *rx_status) | |
1348 | { | |
d91f36db | 1349 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1350 | size_t baselen; |
1351 | struct ieee802_11_elems elems; | |
f698d856 | 1352 | struct ieee80211_local *local = sdata->local; |
471b3efd | 1353 | u32 changed = 0; |
d91f36db | 1354 | bool erp_valid, directed_tim = false; |
7a5158ef | 1355 | u8 erp_value = 0; |
d91f36db | 1356 | u32 ncrc; |
77fdaa12 JB |
1357 | u8 *bssid; |
1358 | ||
1359 | ASSERT_MGD_MTX(ifmgd); | |
f0706e82 | 1360 | |
ae6a44e3 EK |
1361 | /* Process beacon from the current BSS */ |
1362 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1363 | if (baselen > len) | |
1364 | return; | |
1365 | ||
d91f36db | 1366 | if (rx_status->freq != local->hw.conf.channel->center_freq) |
f0706e82 | 1367 | return; |
f0706e82 | 1368 | |
b291ba11 JB |
1369 | /* |
1370 | * We might have received a number of frames, among them a | |
1371 | * disassoc frame and a beacon... | |
1372 | */ | |
1373 | if (!ifmgd->associated) | |
77fdaa12 JB |
1374 | return; |
1375 | ||
0c1ad2ca | 1376 | bssid = ifmgd->associated->bssid; |
77fdaa12 | 1377 | |
b291ba11 JB |
1378 | /* |
1379 | * And in theory even frames from a different AP we were just | |
1380 | * associated to a split-second ago! | |
1381 | */ | |
1382 | if (memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0) | |
f0706e82 JB |
1383 | return; |
1384 | ||
b291ba11 | 1385 | if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) { |
92778180 JM |
1386 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
1387 | if (net_ratelimit()) { | |
1388 | printk(KERN_DEBUG "%s: cancelling probereq poll due " | |
47846c9b | 1389 | "to a received beacon\n", sdata->name); |
92778180 JM |
1390 | } |
1391 | #endif | |
b291ba11 | 1392 | ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL; |
4e751843 JB |
1393 | mutex_lock(&local->iflist_mtx); |
1394 | ieee80211_recalc_ps(local, -1); | |
1395 | mutex_unlock(&local->iflist_mtx); | |
92778180 JM |
1396 | } |
1397 | ||
b291ba11 JB |
1398 | /* |
1399 | * Push the beacon loss detection into the future since | |
1400 | * we are processing a beacon from the AP just now. | |
1401 | */ | |
1402 | mod_beacon_timer(sdata); | |
1403 | ||
d91f36db JB |
1404 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
1405 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
1406 | len - baselen, &elems, | |
1407 | care_about_ies, ncrc); | |
1408 | ||
1409 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
e7ec86f5 JB |
1410 | directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len, |
1411 | ifmgd->aid); | |
d91f36db | 1412 | |
30196673 JM |
1413 | if (ncrc != ifmgd->beacon_crc) { |
1414 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, | |
1415 | true); | |
d91f36db | 1416 | |
30196673 JM |
1417 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
1418 | elems.wmm_param_len); | |
1419 | } | |
fe3fa827 | 1420 | |
25c9c875 | 1421 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
1fb3606b | 1422 | if (directed_tim) { |
572e0012 KV |
1423 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
1424 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1425 | ieee80211_hw_config(local, | |
1426 | IEEE80211_CONF_CHANGE_PS); | |
1427 | ieee80211_send_nullfunc(local, sdata, 0); | |
1428 | } else { | |
1429 | local->pspolling = true; | |
1430 | ||
1431 | /* | |
1432 | * Here is assumed that the driver will be | |
1433 | * able to send ps-poll frame and receive a | |
1434 | * response even though power save mode is | |
1435 | * enabled, but some drivers might require | |
1436 | * to disable power save here. This needs | |
1437 | * to be investigated. | |
1438 | */ | |
1439 | ieee80211_send_pspoll(local, sdata); | |
1440 | } | |
a97b77b9 VN |
1441 | } |
1442 | } | |
7a5158ef | 1443 | |
30196673 JM |
1444 | if (ncrc == ifmgd->beacon_crc) |
1445 | return; | |
1446 | ifmgd->beacon_crc = ncrc; | |
1447 | ||
7a5158ef JB |
1448 | if (elems.erp_info && elems.erp_info_len >= 1) { |
1449 | erp_valid = true; | |
1450 | erp_value = elems.erp_info[0]; | |
1451 | } else { | |
1452 | erp_valid = false; | |
50c4afb9 | 1453 | } |
7a5158ef JB |
1454 | changed |= ieee80211_handle_bss_capability(sdata, |
1455 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
1456 | erp_valid, erp_value); | |
f0706e82 | 1457 | |
d3c990fb | 1458 | |
53d6f81c | 1459 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
ab1faead | 1460 | !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) { |
ae5eb026 JB |
1461 | struct sta_info *sta; |
1462 | struct ieee80211_supported_band *sband; | |
1463 | u16 ap_ht_cap_flags; | |
1464 | ||
1465 | rcu_read_lock(); | |
1466 | ||
abe60632 | 1467 | sta = sta_info_get(sdata, bssid); |
77fdaa12 | 1468 | if (WARN_ON(!sta)) { |
ae5eb026 JB |
1469 | rcu_read_unlock(); |
1470 | return; | |
1471 | } | |
1472 | ||
1473 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1474 | ||
1475 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, | |
1476 | elems.ht_cap_elem, &sta->sta.ht_cap); | |
1477 | ||
1478 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
1479 | ||
1480 | rcu_read_unlock(); | |
1481 | ||
1482 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, | |
77fdaa12 | 1483 | bssid, ap_ht_cap_flags); |
d3c990fb RR |
1484 | } |
1485 | ||
8b19e6ca | 1486 | /* Note: country IE parsing is done for us by cfg80211 */ |
3f2355cb | 1487 | if (elems.country_elem) { |
a8302de9 VT |
1488 | /* TODO: IBSS also needs this */ |
1489 | if (elems.pwr_constr_elem) | |
1490 | ieee80211_handle_pwr_constr(sdata, | |
1491 | le16_to_cpu(mgmt->u.probe_resp.capab_info), | |
1492 | elems.pwr_constr_elem, | |
1493 | elems.pwr_constr_elem_len); | |
3f2355cb LR |
1494 | } |
1495 | ||
471b3efd | 1496 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
1497 | } |
1498 | ||
46900298 | 1499 | ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, |
f1d58c25 | 1500 | struct sk_buff *skb) |
f0706e82 | 1501 | { |
f698d856 | 1502 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1503 | struct ieee80211_mgmt *mgmt; |
1504 | u16 fc; | |
1505 | ||
1506 | if (skb->len < 24) | |
46900298 | 1507 | return RX_DROP_MONITOR; |
f0706e82 JB |
1508 | |
1509 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1510 | fc = le16_to_cpu(mgmt->frame_control); | |
1511 | ||
1512 | switch (fc & IEEE80211_FCTL_STYPE) { | |
f0706e82 JB |
1513 | case IEEE80211_STYPE_PROBE_RESP: |
1514 | case IEEE80211_STYPE_BEACON: | |
f0706e82 JB |
1515 | case IEEE80211_STYPE_DEAUTH: |
1516 | case IEEE80211_STYPE_DISASSOC: | |
77fdaa12 | 1517 | case IEEE80211_STYPE_ACTION: |
46900298 | 1518 | skb_queue_tail(&sdata->u.mgd.skb_queue, skb); |
42935eca | 1519 | ieee80211_queue_work(&local->hw, &sdata->u.mgd.work); |
46900298 | 1520 | return RX_QUEUED; |
f0706e82 JB |
1521 | } |
1522 | ||
46900298 | 1523 | return RX_DROP_MONITOR; |
f0706e82 JB |
1524 | } |
1525 | ||
f698d856 | 1526 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1527 | struct sk_buff *skb) |
1528 | { | |
77fdaa12 | 1529 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 1530 | struct ieee80211_rx_status *rx_status; |
f0706e82 | 1531 | struct ieee80211_mgmt *mgmt; |
77fdaa12 | 1532 | enum rx_mgmt_action rma = RX_MGMT_NONE; |
f0706e82 JB |
1533 | u16 fc; |
1534 | ||
f0706e82 JB |
1535 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
1536 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1537 | fc = le16_to_cpu(mgmt->frame_control); | |
1538 | ||
77fdaa12 JB |
1539 | mutex_lock(&ifmgd->mtx); |
1540 | ||
1541 | if (ifmgd->associated && | |
0c1ad2ca | 1542 | memcmp(ifmgd->associated->bssid, mgmt->bssid, ETH_ALEN) == 0) { |
77fdaa12 JB |
1543 | switch (fc & IEEE80211_FCTL_STYPE) { |
1544 | case IEEE80211_STYPE_BEACON: | |
1545 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, | |
1546 | rx_status); | |
1547 | break; | |
1548 | case IEEE80211_STYPE_PROBE_RESP: | |
af6b6374 | 1549 | ieee80211_rx_mgmt_probe_resp(sdata, skb); |
77fdaa12 JB |
1550 | break; |
1551 | case IEEE80211_STYPE_DEAUTH: | |
63f170e0 | 1552 | rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
77fdaa12 JB |
1553 | break; |
1554 | case IEEE80211_STYPE_DISASSOC: | |
1555 | rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); | |
1556 | break; | |
1557 | case IEEE80211_STYPE_ACTION: | |
d7907448 FF |
1558 | if (mgmt->u.action.category != WLAN_CATEGORY_SPECTRUM_MGMT) |
1559 | break; | |
1560 | ||
77fdaa12 JB |
1561 | ieee80211_sta_process_chanswitch(sdata, |
1562 | &mgmt->u.action.u.chan_switch.sw_elem, | |
0c1ad2ca | 1563 | (void *)ifmgd->associated->priv); |
77fdaa12 JB |
1564 | break; |
1565 | } | |
1566 | mutex_unlock(&ifmgd->mtx); | |
1567 | ||
1568 | switch (rma) { | |
1569 | case RX_MGMT_NONE: | |
1570 | /* no action */ | |
1571 | break; | |
1572 | case RX_MGMT_CFG80211_DEAUTH: | |
ce470613 | 1573 | cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); |
77fdaa12 JB |
1574 | break; |
1575 | case RX_MGMT_CFG80211_DISASSOC: | |
ce470613 | 1576 | cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); |
77fdaa12 JB |
1577 | break; |
1578 | default: | |
1579 | WARN(1, "unexpected: %d", rma); | |
1580 | } | |
1581 | goto out; | |
1582 | } | |
1583 | ||
77fdaa12 JB |
1584 | mutex_unlock(&ifmgd->mtx); |
1585 | ||
63f170e0 | 1586 | if (skb->len >= 24 + 2 /* mgmt + deauth reason */ && |
af6b6374 | 1587 | (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH) |
ce470613 | 1588 | cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); |
f0706e82 | 1589 | |
77fdaa12 | 1590 | out: |
f0706e82 JB |
1591 | kfree_skb(skb); |
1592 | } | |
1593 | ||
9c6bd790 | 1594 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 1595 | { |
60f8b39c JB |
1596 | struct ieee80211_sub_if_data *sdata = |
1597 | (struct ieee80211_sub_if_data *) data; | |
46900298 | 1598 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 1599 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1600 | |
5bb644a0 JB |
1601 | if (local->quiescing) { |
1602 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
1603 | return; | |
1604 | } | |
1605 | ||
42935eca | 1606 | ieee80211_queue_work(&local->hw, &ifmgd->work); |
f0706e82 JB |
1607 | } |
1608 | ||
9c6bd790 JB |
1609 | static void ieee80211_sta_work(struct work_struct *work) |
1610 | { | |
1611 | struct ieee80211_sub_if_data *sdata = | |
46900298 | 1612 | container_of(work, struct ieee80211_sub_if_data, u.mgd.work); |
9c6bd790 | 1613 | struct ieee80211_local *local = sdata->local; |
46900298 | 1614 | struct ieee80211_if_managed *ifmgd; |
9c6bd790 JB |
1615 | struct sk_buff *skb; |
1616 | ||
9607e6b6 | 1617 | if (!ieee80211_sdata_running(sdata)) |
9c6bd790 JB |
1618 | return; |
1619 | ||
fbe9c429 | 1620 | if (local->scanning) |
9c6bd790 JB |
1621 | return; |
1622 | ||
46900298 | 1623 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 1624 | return; |
5bb644a0 JB |
1625 | |
1626 | /* | |
42935eca LR |
1627 | * ieee80211_queue_work() should have picked up most cases, |
1628 | * here we'll pick the the rest. | |
5bb644a0 | 1629 | */ |
42935eca LR |
1630 | if (WARN(local->suspended, "STA MLME work scheduled while " |
1631 | "going to suspend\n")) | |
5bb644a0 JB |
1632 | return; |
1633 | ||
46900298 | 1634 | ifmgd = &sdata->u.mgd; |
f0706e82 | 1635 | |
77fdaa12 | 1636 | /* first process frames to avoid timing out while a frame is pending */ |
46900298 | 1637 | while ((skb = skb_dequeue(&ifmgd->skb_queue))) |
9c6bd790 JB |
1638 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
1639 | ||
77fdaa12 JB |
1640 | /* then process the rest of the work */ |
1641 | mutex_lock(&ifmgd->mtx); | |
1642 | ||
b291ba11 JB |
1643 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
1644 | IEEE80211_STA_CONNECTION_POLL) && | |
1645 | ifmgd->associated) { | |
a43abf29 ML |
1646 | u8 bssid[ETH_ALEN]; |
1647 | ||
0c1ad2ca | 1648 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
b291ba11 JB |
1649 | if (time_is_after_jiffies(ifmgd->probe_timeout)) |
1650 | run_again(ifmgd, ifmgd->probe_timeout); | |
a43abf29 ML |
1651 | |
1652 | else if (ifmgd->probe_send_count < IEEE80211_MAX_PROBE_TRIES) { | |
1653 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
1654 | printk(KERN_DEBUG "No probe response from AP %pM" | |
1655 | " after %dms, try %d\n", bssid, | |
1656 | (1000 * IEEE80211_PROBE_WAIT)/HZ, | |
1657 | ifmgd->probe_send_count); | |
1658 | #endif | |
1659 | ieee80211_mgd_probe_ap_send(sdata); | |
1660 | } else { | |
b291ba11 JB |
1661 | /* |
1662 | * We actually lost the connection ... or did we? | |
1663 | * Let's make sure! | |
1664 | */ | |
1665 | ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL | | |
1666 | IEEE80211_STA_BEACON_POLL); | |
b291ba11 JB |
1667 | printk(KERN_DEBUG "No probe response from AP %pM" |
1668 | " after %dms, disconnecting.\n", | |
1669 | bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ); | |
63f170e0 | 1670 | ieee80211_set_disassoc(sdata); |
bc83b681 | 1671 | ieee80211_recalc_idle(local); |
b291ba11 JB |
1672 | mutex_unlock(&ifmgd->mtx); |
1673 | /* | |
1674 | * must be outside lock due to cfg80211, | |
1675 | * but that's not a problem. | |
1676 | */ | |
1677 | ieee80211_send_deauth_disassoc(sdata, bssid, | |
1678 | IEEE80211_STYPE_DEAUTH, | |
1679 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
1680 | NULL); | |
1681 | mutex_lock(&ifmgd->mtx); | |
1682 | } | |
1683 | } | |
1684 | ||
77fdaa12 | 1685 | mutex_unlock(&ifmgd->mtx); |
f0706e82 JB |
1686 | } |
1687 | ||
b291ba11 JB |
1688 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
1689 | { | |
1690 | struct ieee80211_sub_if_data *sdata = | |
1691 | (struct ieee80211_sub_if_data *) data; | |
1692 | struct ieee80211_local *local = sdata->local; | |
1693 | ||
1694 | if (local->quiescing) | |
1695 | return; | |
1696 | ||
1e4dcd01 JO |
1697 | ieee80211_queue_work(&sdata->local->hw, |
1698 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
1699 | } |
1700 | ||
1701 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
1702 | { | |
1703 | struct ieee80211_sub_if_data *sdata = | |
1704 | (struct ieee80211_sub_if_data *) data; | |
1705 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1706 | struct ieee80211_local *local = sdata->local; | |
1707 | ||
1708 | if (local->quiescing) | |
1709 | return; | |
1710 | ||
42935eca | 1711 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
1712 | } |
1713 | ||
1714 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
1715 | { | |
1716 | struct ieee80211_sub_if_data *sdata = | |
1717 | container_of(work, struct ieee80211_sub_if_data, | |
1718 | u.mgd.monitor_work); | |
1719 | ||
1720 | ieee80211_mgd_probe_ap(sdata, false); | |
1721 | } | |
1722 | ||
9c6bd790 JB |
1723 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
1724 | { | |
ad935687 | 1725 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
b291ba11 JB |
1726 | sdata->u.mgd.flags &= ~(IEEE80211_STA_BEACON_POLL | |
1727 | IEEE80211_STA_CONNECTION_POLL); | |
ad935687 | 1728 | |
b291ba11 | 1729 | /* let's probe the connection once */ |
42935eca | 1730 | ieee80211_queue_work(&sdata->local->hw, |
b291ba11 JB |
1731 | &sdata->u.mgd.monitor_work); |
1732 | /* and do all the other regular work too */ | |
42935eca | 1733 | ieee80211_queue_work(&sdata->local->hw, |
46900298 | 1734 | &sdata->u.mgd.work); |
ad935687 | 1735 | } |
9c6bd790 | 1736 | } |
f0706e82 | 1737 | |
5bb644a0 JB |
1738 | #ifdef CONFIG_PM |
1739 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) | |
1740 | { | |
1741 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1742 | ||
1743 | /* | |
1744 | * we need to use atomic bitops for the running bits | |
1745 | * only because both timers might fire at the same | |
1746 | * time -- the code here is properly synchronised. | |
1747 | */ | |
1748 | ||
1749 | cancel_work_sync(&ifmgd->work); | |
1e4dcd01 | 1750 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); |
5bb644a0 JB |
1751 | if (del_timer_sync(&ifmgd->timer)) |
1752 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
1753 | ||
1754 | cancel_work_sync(&ifmgd->chswitch_work); | |
1755 | if (del_timer_sync(&ifmgd->chswitch_timer)) | |
1756 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
b291ba11 JB |
1757 | |
1758 | cancel_work_sync(&ifmgd->monitor_work); | |
1759 | /* these will just be re-established on connection */ | |
1760 | del_timer_sync(&ifmgd->conn_mon_timer); | |
1761 | del_timer_sync(&ifmgd->bcn_mon_timer); | |
5bb644a0 JB |
1762 | } |
1763 | ||
1764 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) | |
1765 | { | |
1766 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1767 | ||
1768 | if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running)) | |
1769 | add_timer(&ifmgd->timer); | |
1770 | if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running)) | |
1771 | add_timer(&ifmgd->chswitch_timer); | |
1772 | } | |
1773 | #endif | |
1774 | ||
9c6bd790 JB |
1775 | /* interface setup */ |
1776 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 1777 | { |
46900298 | 1778 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 1779 | |
46900298 JB |
1780 | ifmgd = &sdata->u.mgd; |
1781 | INIT_WORK(&ifmgd->work, ieee80211_sta_work); | |
b291ba11 | 1782 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 1783 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
1784 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
1785 | ieee80211_beacon_connection_loss_work); | |
46900298 | 1786 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 1787 | (unsigned long) sdata); |
b291ba11 JB |
1788 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
1789 | (unsigned long) sdata); | |
1790 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
1791 | (unsigned long) sdata); | |
46900298 | 1792 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 1793 | (unsigned long) sdata); |
46900298 | 1794 | skb_queue_head_init(&ifmgd->skb_queue); |
9c6bd790 | 1795 | |
ab1faead | 1796 | ifmgd->flags = 0; |
bbbdff9e | 1797 | |
77fdaa12 | 1798 | mutex_init(&ifmgd->mtx); |
0f78231b JB |
1799 | |
1800 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) | |
1801 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
1802 | else | |
1803 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
1804 | } |
1805 | ||
77fdaa12 JB |
1806 | /* scan finished notification */ |
1807 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 1808 | { |
77fdaa12 | 1809 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
60f8b39c | 1810 | |
77fdaa12 JB |
1811 | /* Restart STA timers */ |
1812 | rcu_read_lock(); | |
1813 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
1814 | ieee80211_restart_sta_timer(sdata); | |
1815 | rcu_read_unlock(); | |
1816 | } | |
60f8b39c | 1817 | |
77fdaa12 JB |
1818 | int ieee80211_max_network_latency(struct notifier_block *nb, |
1819 | unsigned long data, void *dummy) | |
1820 | { | |
1821 | s32 latency_usec = (s32) data; | |
1822 | struct ieee80211_local *local = | |
1823 | container_of(nb, struct ieee80211_local, | |
1824 | network_latency_notifier); | |
1fa6f4af | 1825 | |
77fdaa12 JB |
1826 | mutex_lock(&local->iflist_mtx); |
1827 | ieee80211_recalc_ps(local, latency_usec); | |
1828 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 1829 | |
77fdaa12 | 1830 | return 0; |
9c6bd790 JB |
1831 | } |
1832 | ||
77fdaa12 | 1833 | /* config hooks */ |
af6b6374 JB |
1834 | static enum work_done_result |
1835 | ieee80211_probe_auth_done(struct ieee80211_work *wk, | |
1836 | struct sk_buff *skb) | |
1837 | { | |
1838 | if (!skb) { | |
1839 | cfg80211_send_auth_timeout(wk->sdata->dev, wk->filter_ta); | |
1840 | return WORK_DONE_DESTROY; | |
1841 | } | |
1842 | ||
1843 | if (wk->type == IEEE80211_WORK_AUTH) { | |
1844 | cfg80211_send_rx_auth(wk->sdata->dev, skb->data, skb->len); | |
1845 | return WORK_DONE_DESTROY; | |
1846 | } | |
1847 | ||
1848 | mutex_lock(&wk->sdata->u.mgd.mtx); | |
1849 | ieee80211_rx_mgmt_probe_resp(wk->sdata, skb); | |
1850 | mutex_unlock(&wk->sdata->u.mgd.mtx); | |
1851 | ||
1852 | wk->type = IEEE80211_WORK_AUTH; | |
1853 | wk->probe_auth.tries = 0; | |
1854 | return WORK_DONE_REQUEUE; | |
1855 | } | |
1856 | ||
77fdaa12 JB |
1857 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, |
1858 | struct cfg80211_auth_request *req) | |
9c6bd790 | 1859 | { |
77fdaa12 | 1860 | const u8 *ssid; |
f679f65d | 1861 | struct ieee80211_work *wk; |
77fdaa12 | 1862 | u16 auth_alg; |
9c6bd790 | 1863 | |
77fdaa12 JB |
1864 | switch (req->auth_type) { |
1865 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
1866 | auth_alg = WLAN_AUTH_OPEN; | |
1867 | break; | |
1868 | case NL80211_AUTHTYPE_SHARED_KEY: | |
1869 | auth_alg = WLAN_AUTH_SHARED_KEY; | |
1870 | break; | |
1871 | case NL80211_AUTHTYPE_FT: | |
1872 | auth_alg = WLAN_AUTH_FT; | |
1873 | break; | |
1874 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
1875 | auth_alg = WLAN_AUTH_LEAP; | |
1876 | break; | |
1877 | default: | |
1878 | return -EOPNOTSUPP; | |
60f8b39c | 1879 | } |
77fdaa12 JB |
1880 | |
1881 | wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL); | |
1882 | if (!wk) | |
9c6bd790 | 1883 | return -ENOMEM; |
77fdaa12 | 1884 | |
5e124bd5 | 1885 | memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); |
77fdaa12 JB |
1886 | |
1887 | if (req->ie && req->ie_len) { | |
1888 | memcpy(wk->ie, req->ie, req->ie_len); | |
1889 | wk->ie_len = req->ie_len; | |
9c6bd790 | 1890 | } |
77fdaa12 | 1891 | |
fffd0934 | 1892 | if (req->key && req->key_len) { |
af6b6374 JB |
1893 | wk->probe_auth.key_len = req->key_len; |
1894 | wk->probe_auth.key_idx = req->key_idx; | |
1895 | memcpy(wk->probe_auth.key, req->key, req->key_len); | |
fffd0934 JB |
1896 | } |
1897 | ||
77fdaa12 | 1898 | ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); |
af6b6374 JB |
1899 | memcpy(wk->probe_auth.ssid, ssid + 2, ssid[1]); |
1900 | wk->probe_auth.ssid_len = ssid[1]; | |
f679f65d | 1901 | |
af6b6374 JB |
1902 | wk->probe_auth.algorithm = auth_alg; |
1903 | wk->probe_auth.privacy = req->bss->capability & WLAN_CAPABILITY_PRIVACY; | |
77fdaa12 | 1904 | |
070bb547 JB |
1905 | /* if we already have a probe, don't probe again */ |
1906 | if (req->bss->proberesp_ies) | |
1907 | wk->type = IEEE80211_WORK_AUTH; | |
1908 | else | |
1909 | wk->type = IEEE80211_WORK_DIRECT_PROBE; | |
f679f65d | 1910 | wk->chan = req->bss->channel; |
af6b6374 JB |
1911 | wk->sdata = sdata; |
1912 | wk->done = ieee80211_probe_auth_done; | |
77fdaa12 | 1913 | |
af6b6374 | 1914 | ieee80211_add_work(wk); |
9c6bd790 | 1915 | return 0; |
60f8b39c JB |
1916 | } |
1917 | ||
af6b6374 JB |
1918 | static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk, |
1919 | struct sk_buff *skb) | |
1920 | { | |
1921 | struct ieee80211_mgmt *mgmt; | |
1922 | u16 status; | |
1923 | ||
1924 | if (!skb) { | |
1925 | cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta); | |
1926 | return WORK_DONE_DESTROY; | |
1927 | } | |
1928 | ||
1929 | mgmt = (void *)skb->data; | |
1930 | status = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1931 | ||
1932 | if (status == WLAN_STATUS_SUCCESS) { | |
1933 | mutex_lock(&wk->sdata->u.mgd.mtx); | |
1934 | if (!ieee80211_assoc_success(wk, mgmt, skb->len)) { | |
1935 | mutex_unlock(&wk->sdata->u.mgd.mtx); | |
1936 | /* oops -- internal error -- send timeout for now */ | |
1937 | cfg80211_send_assoc_timeout(wk->sdata->dev, | |
1938 | wk->filter_ta); | |
1939 | return WORK_DONE_DESTROY; | |
1940 | } | |
1941 | mutex_unlock(&wk->sdata->u.mgd.mtx); | |
1942 | } | |
1943 | ||
1944 | cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len); | |
1945 | return WORK_DONE_DESTROY; | |
1946 | } | |
1947 | ||
77fdaa12 JB |
1948 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
1949 | struct cfg80211_assoc_request *req) | |
f0706e82 | 1950 | { |
77fdaa12 | 1951 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 1952 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
f679f65d | 1953 | struct ieee80211_work *wk; |
63f170e0 | 1954 | const u8 *ssid; |
af6b6374 | 1955 | int i; |
f0706e82 | 1956 | |
77fdaa12 | 1957 | mutex_lock(&ifmgd->mtx); |
af6b6374 | 1958 | if (ifmgd->associated) { |
9c87ba67 JM |
1959 | if (!req->prev_bssid || |
1960 | memcmp(req->prev_bssid, ifmgd->associated->bssid, | |
1961 | ETH_ALEN)) { | |
1962 | /* | |
1963 | * We are already associated and the request was not a | |
1964 | * reassociation request from the current BSS, so | |
1965 | * reject it. | |
1966 | */ | |
1967 | mutex_unlock(&ifmgd->mtx); | |
1968 | return -EALREADY; | |
1969 | } | |
1970 | ||
1971 | /* Trying to reassociate - clear previous association state */ | |
1972 | ieee80211_set_disassoc(sdata); | |
af6b6374 JB |
1973 | } |
1974 | mutex_unlock(&ifmgd->mtx); | |
77fdaa12 | 1975 | |
63f170e0 | 1976 | wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL); |
af6b6374 JB |
1977 | if (!wk) |
1978 | return -ENOMEM; | |
77fdaa12 | 1979 | |
77fdaa12 | 1980 | ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N; |
375177bf | 1981 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; |
77fdaa12 JB |
1982 | |
1983 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) | |
1984 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || | |
1985 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1986 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) | |
1987 | ifmgd->flags |= IEEE80211_STA_DISABLE_11N; | |
1988 | ||
77fdaa12 JB |
1989 | |
1990 | if (req->ie && req->ie_len) { | |
1991 | memcpy(wk->ie, req->ie, req->ie_len); | |
1992 | wk->ie_len = req->ie_len; | |
1993 | } else | |
1994 | wk->ie_len = 0; | |
1995 | ||
0c1ad2ca | 1996 | wk->assoc.bss = req->bss; |
f679f65d | 1997 | |
af6b6374 | 1998 | memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); |
f679f65d | 1999 | |
af6b6374 JB |
2000 | /* new association always uses requested smps mode */ |
2001 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { | |
2002 | if (ifmgd->powersave) | |
2003 | ifmgd->ap_smps = IEEE80211_SMPS_DYNAMIC; | |
2004 | else | |
2005 | ifmgd->ap_smps = IEEE80211_SMPS_OFF; | |
2006 | } else | |
2007 | ifmgd->ap_smps = ifmgd->req_smps; | |
2008 | ||
2009 | wk->assoc.smps = ifmgd->ap_smps; | |
77c8144a JB |
2010 | /* |
2011 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
2012 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
2013 | * ciphers is configured as pairwise. | |
2014 | * We can set this to true for non-11n hardware, that'll be checked | |
2015 | * separately along with the peer capabilities. | |
2016 | */ | |
af6b6374 | 2017 | wk->assoc.use_11n = !(ifmgd->flags & IEEE80211_STA_DISABLE_11N); |
f679f65d | 2018 | wk->assoc.capability = req->bss->capability; |
0c1ad2ca JB |
2019 | wk->assoc.wmm_used = bss->wmm_used; |
2020 | wk->assoc.supp_rates = bss->supp_rates; | |
2021 | wk->assoc.supp_rates_len = bss->supp_rates_len; | |
f679f65d JB |
2022 | wk->assoc.ht_information_ie = |
2023 | ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION); | |
63f170e0 | 2024 | |
ab13315a KV |
2025 | if (bss->wmm_used && bss->uapsd_supported && |
2026 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) { | |
2027 | wk->assoc.uapsd_used = true; | |
2028 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; | |
2029 | } else { | |
2030 | wk->assoc.uapsd_used = false; | |
2031 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; | |
2032 | } | |
2033 | ||
63f170e0 | 2034 | ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); |
f679f65d JB |
2035 | memcpy(wk->assoc.ssid, ssid + 2, ssid[1]); |
2036 | wk->assoc.ssid_len = ssid[1]; | |
63f170e0 | 2037 | |
77fdaa12 | 2038 | if (req->prev_bssid) |
f679f65d | 2039 | memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 | 2040 | |
f679f65d | 2041 | wk->type = IEEE80211_WORK_ASSOC; |
f679f65d | 2042 | wk->chan = req->bss->channel; |
af6b6374 JB |
2043 | wk->sdata = sdata; |
2044 | wk->done = ieee80211_assoc_done; | |
77fdaa12 JB |
2045 | |
2046 | if (req->use_mfp) { | |
2047 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
2048 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
2049 | } else { | |
2050 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
2051 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
2052 | } | |
2053 | ||
2054 | if (req->crypto.control_port) | |
2055 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
2056 | else | |
2057 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
2058 | ||
af6b6374 JB |
2059 | ieee80211_add_work(wk); |
2060 | return 0; | |
f0706e82 JB |
2061 | } |
2062 | ||
77fdaa12 | 2063 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
667503dd JB |
2064 | struct cfg80211_deauth_request *req, |
2065 | void *cookie) | |
f0706e82 | 2066 | { |
af6b6374 | 2067 | struct ieee80211_local *local = sdata->local; |
46900298 | 2068 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f679f65d | 2069 | struct ieee80211_work *wk; |
63f170e0 | 2070 | const u8 *bssid = req->bss->bssid; |
f0706e82 | 2071 | |
77fdaa12 JB |
2072 | mutex_lock(&ifmgd->mtx); |
2073 | ||
0c1ad2ca | 2074 | if (ifmgd->associated == req->bss) { |
77fdaa12 | 2075 | bssid = req->bss->bssid; |
63f170e0 | 2076 | ieee80211_set_disassoc(sdata); |
af6b6374 JB |
2077 | mutex_unlock(&ifmgd->mtx); |
2078 | } else { | |
2079 | bool not_auth_yet = false; | |
f0706e82 | 2080 | |
a58ce43f | 2081 | mutex_unlock(&ifmgd->mtx); |
a58ce43f | 2082 | |
af6b6374 JB |
2083 | mutex_lock(&local->work_mtx); |
2084 | list_for_each_entry(wk, &local->work_list, list) { | |
29165e4c | 2085 | if (wk->sdata != sdata) |
af6b6374 | 2086 | continue; |
29165e4c JB |
2087 | |
2088 | if (wk->type != IEEE80211_WORK_DIRECT_PROBE && | |
2089 | wk->type != IEEE80211_WORK_AUTH) | |
2090 | continue; | |
2091 | ||
af6b6374 JB |
2092 | if (memcmp(req->bss->bssid, wk->filter_ta, ETH_ALEN)) |
2093 | continue; | |
29165e4c JB |
2094 | |
2095 | not_auth_yet = wk->type == IEEE80211_WORK_DIRECT_PROBE; | |
2096 | list_del_rcu(&wk->list); | |
af6b6374 JB |
2097 | free_work(wk); |
2098 | break; | |
2099 | } | |
2100 | mutex_unlock(&local->work_mtx); | |
2101 | ||
2102 | /* | |
2103 | * If somebody requests authentication and we haven't | |
2104 | * sent out an auth frame yet there's no need to send | |
2105 | * out a deauth frame either. If the state was PROBE, | |
2106 | * then this is the case. If it's AUTH we have sent a | |
2107 | * frame, and if it's IDLE we have completed the auth | |
2108 | * process already. | |
2109 | */ | |
2110 | if (not_auth_yet) { | |
2111 | __cfg80211_auth_canceled(sdata->dev, bssid); | |
2112 | return 0; | |
2113 | } | |
2114 | } | |
77fdaa12 | 2115 | |
0ff71613 | 2116 | printk(KERN_DEBUG "%s: deauthenticating from %pM by local choice (reason=%d)\n", |
47846c9b | 2117 | sdata->name, bssid, req->reason_code); |
0ff71613 | 2118 | |
77fdaa12 | 2119 | ieee80211_send_deauth_disassoc(sdata, bssid, |
667503dd JB |
2120 | IEEE80211_STYPE_DEAUTH, req->reason_code, |
2121 | cookie); | |
f0706e82 | 2122 | |
bc83b681 JB |
2123 | ieee80211_recalc_idle(sdata->local); |
2124 | ||
f0706e82 JB |
2125 | return 0; |
2126 | } | |
84363e6e | 2127 | |
77fdaa12 | 2128 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
667503dd JB |
2129 | struct cfg80211_disassoc_request *req, |
2130 | void *cookie) | |
9c6bd790 | 2131 | { |
77fdaa12 | 2132 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 2133 | |
77fdaa12 | 2134 | mutex_lock(&ifmgd->mtx); |
10f644a4 | 2135 | |
8d8b261a JB |
2136 | /* |
2137 | * cfg80211 should catch this ... but it's racy since | |
2138 | * we can receive a disassoc frame, process it, hand it | |
2139 | * to cfg80211 while that's in a locked section already | |
2140 | * trying to tell us that the user wants to disconnect. | |
2141 | */ | |
0c1ad2ca | 2142 | if (ifmgd->associated != req->bss) { |
77fdaa12 JB |
2143 | mutex_unlock(&ifmgd->mtx); |
2144 | return -ENOLINK; | |
2145 | } | |
2146 | ||
0ff71613 | 2147 | printk(KERN_DEBUG "%s: disassociating from %pM by local choice (reason=%d)\n", |
47846c9b | 2148 | sdata->name, req->bss->bssid, req->reason_code); |
0ff71613 | 2149 | |
63f170e0 | 2150 | ieee80211_set_disassoc(sdata); |
77fdaa12 JB |
2151 | |
2152 | mutex_unlock(&ifmgd->mtx); | |
10f644a4 | 2153 | |
77fdaa12 | 2154 | ieee80211_send_deauth_disassoc(sdata, req->bss->bssid, |
667503dd JB |
2155 | IEEE80211_STYPE_DISASSOC, req->reason_code, |
2156 | cookie); | |
bc83b681 JB |
2157 | |
2158 | ieee80211_recalc_idle(sdata->local); | |
2159 | ||
10f644a4 JB |
2160 | return 0; |
2161 | } | |
026331c4 JM |
2162 | |
2163 | int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata, | |
2164 | struct ieee80211_channel *chan, | |
2165 | enum nl80211_channel_type channel_type, | |
2166 | const u8 *buf, size_t len, u64 *cookie) | |
2167 | { | |
2168 | struct ieee80211_local *local = sdata->local; | |
2169 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2170 | struct sk_buff *skb; | |
2171 | ||
2172 | /* Check that we are on the requested channel for transmission */ | |
2173 | if ((chan != local->tmp_channel || | |
2174 | channel_type != local->tmp_channel_type) && | |
2175 | (chan != local->oper_channel || | |
2176 | channel_type != local->oper_channel_type)) | |
2177 | return -EBUSY; | |
2178 | ||
2179 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); | |
2180 | if (!skb) | |
2181 | return -ENOMEM; | |
2182 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
2183 | ||
2184 | memcpy(skb_put(skb, len), buf, len); | |
2185 | ||
2186 | if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED)) | |
2187 | IEEE80211_SKB_CB(skb)->flags |= | |
2188 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
2189 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_NL80211_FRAME_TX | | |
2190 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
2191 | skb->dev = sdata->dev; | |
2192 | ieee80211_tx_skb(sdata, skb); | |
2193 | ||
2194 | *cookie = (unsigned long) skb; | |
2195 | return 0; | |
2196 | } | |
a97c13c3 JO |
2197 | |
2198 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, | |
2199 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
2200 | gfp_t gfp) | |
2201 | { | |
2202 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2203 | ||
2204 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); | |
2205 | } | |
2206 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |