Commit | Line | Data |
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c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * utilities for mac80211 | |
12 | */ | |
13 | ||
14 | #include <net/mac80211.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/bitmap.h> | |
d91f36db | 23 | #include <linux/crc32.h> |
881d966b | 24 | #include <net/net_namespace.h> |
c2d1560a | 25 | #include <net/cfg80211.h> |
dabeb344 | 26 | #include <net/rtnetlink.h> |
c2d1560a JB |
27 | |
28 | #include "ieee80211_i.h" | |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
ee385855 | 31 | #include "mesh.h" |
c2d1560a | 32 | #include "wme.h" |
f2753ddb | 33 | #include "led.h" |
fffd0934 | 34 | #include "wep.h" |
c2d1560a JB |
35 | |
36 | /* privid for wiphys to determine whether they belong to us or not */ | |
37 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; | |
38 | ||
9a95371a LR |
39 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
40 | { | |
41 | struct ieee80211_local *local; | |
42 | BUG_ON(!wiphy); | |
43 | ||
44 | local = wiphy_priv(wiphy); | |
45 | return &local->hw; | |
46 | } | |
47 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 48 | |
71364716 | 49 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
05c914fe | 50 | enum nl80211_iftype type) |
c2d1560a | 51 | { |
a494bb1c | 52 | __le16 fc = hdr->frame_control; |
c2d1560a | 53 | |
98f0b0a3 RR |
54 | /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ |
55 | if (len < 16) | |
c2d1560a JB |
56 | return NULL; |
57 | ||
a494bb1c | 58 | if (ieee80211_is_data(fc)) { |
98f0b0a3 RR |
59 | if (len < 24) /* drop incorrect hdr len (data) */ |
60 | return NULL; | |
a494bb1c HH |
61 | |
62 | if (ieee80211_has_a4(fc)) | |
c2d1560a | 63 | return NULL; |
a494bb1c HH |
64 | if (ieee80211_has_tods(fc)) |
65 | return hdr->addr1; | |
66 | if (ieee80211_has_fromds(fc)) | |
c2d1560a | 67 | return hdr->addr2; |
a494bb1c HH |
68 | |
69 | return hdr->addr3; | |
70 | } | |
71 | ||
72 | if (ieee80211_is_mgmt(fc)) { | |
98f0b0a3 RR |
73 | if (len < 24) /* drop incorrect hdr len (mgmt) */ |
74 | return NULL; | |
c2d1560a | 75 | return hdr->addr3; |
a494bb1c HH |
76 | } |
77 | ||
78 | if (ieee80211_is_ctl(fc)) { | |
79 | if(ieee80211_is_pspoll(fc)) | |
c2d1560a | 80 | return hdr->addr1; |
a494bb1c HH |
81 | |
82 | if (ieee80211_is_back_req(fc)) { | |
71364716 | 83 | switch (type) { |
05c914fe | 84 | case NL80211_IFTYPE_STATION: |
71364716 | 85 | return hdr->addr2; |
05c914fe JB |
86 | case NL80211_IFTYPE_AP: |
87 | case NL80211_IFTYPE_AP_VLAN: | |
71364716 RR |
88 | return hdr->addr1; |
89 | default: | |
a494bb1c | 90 | break; /* fall through to the return */ |
71364716 RR |
91 | } |
92 | } | |
c2d1560a JB |
93 | } |
94 | ||
95 | return NULL; | |
96 | } | |
97 | ||
5cf121c3 | 98 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 99 | { |
2de8e0d9 JB |
100 | struct sk_buff *skb = tx->skb; |
101 | struct ieee80211_hdr *hdr; | |
102 | ||
103 | do { | |
104 | hdr = (struct ieee80211_hdr *) skb->data; | |
105 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
106 | } while ((skb = skb->next)); | |
c2d1560a JB |
107 | } |
108 | ||
109 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, | |
110 | int rate, int erp, int short_preamble) | |
111 | { | |
112 | int dur; | |
113 | ||
114 | /* calculate duration (in microseconds, rounded up to next higher | |
115 | * integer if it includes a fractional microsecond) to send frame of | |
116 | * len bytes (does not include FCS) at the given rate. Duration will | |
117 | * also include SIFS. | |
118 | * | |
119 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
120 | * DIV_ROUND_UP() operations. | |
121 | */ | |
122 | ||
8318d78a | 123 | if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
124 | /* |
125 | * OFDM: | |
126 | * | |
127 | * N_DBPS = DATARATE x 4 | |
128 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
129 | * (16 = SIGNAL time, 6 = tail bits) | |
130 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
131 | * | |
132 | * T_SYM = 4 usec | |
133 | * 802.11a - 17.5.2: aSIFSTime = 16 usec | |
134 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + | |
135 | * signal ext = 6 usec | |
136 | */ | |
c2d1560a JB |
137 | dur = 16; /* SIFS + signal ext */ |
138 | dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */ | |
139 | dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */ | |
140 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
141 | 4 * rate); /* T_SYM x N_SYM */ | |
142 | } else { | |
143 | /* | |
144 | * 802.11b or 802.11g with 802.11b compatibility: | |
145 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
146 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
147 | * | |
148 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
149 | * aSIFSTime = 10 usec | |
150 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
151 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
152 | */ | |
153 | dur = 10; /* aSIFSTime = 10 usec */ | |
154 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
155 | ||
156 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
157 | } | |
158 | ||
159 | return dur; | |
160 | } | |
161 | ||
162 | /* Exported duration function for driver use */ | |
32bfd35d JB |
163 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
164 | struct ieee80211_vif *vif, | |
8318d78a JB |
165 | size_t frame_len, |
166 | struct ieee80211_rate *rate) | |
c2d1560a JB |
167 | { |
168 | struct ieee80211_local *local = hw_to_local(hw); | |
25d834e1 | 169 | struct ieee80211_sub_if_data *sdata; |
c2d1560a JB |
170 | u16 dur; |
171 | int erp; | |
25d834e1 | 172 | bool short_preamble = false; |
c2d1560a | 173 | |
8318d78a | 174 | erp = 0; |
25d834e1 JB |
175 | if (vif) { |
176 | sdata = vif_to_sdata(vif); | |
bda3933a | 177 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
178 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
179 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
180 | } | |
8318d78a JB |
181 | |
182 | dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp, | |
25d834e1 | 183 | short_preamble); |
c2d1560a JB |
184 | |
185 | return cpu_to_le16(dur); | |
186 | } | |
187 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
188 | ||
32bfd35d JB |
189 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
190 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 191 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
192 | { |
193 | struct ieee80211_local *local = hw_to_local(hw); | |
194 | struct ieee80211_rate *rate; | |
25d834e1 | 195 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 196 | bool short_preamble; |
c2d1560a JB |
197 | int erp; |
198 | u16 dur; | |
2e92e6f2 JB |
199 | struct ieee80211_supported_band *sband; |
200 | ||
201 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
c2d1560a | 202 | |
25d834e1 | 203 | short_preamble = false; |
7e9ed188 | 204 | |
e039fa4a | 205 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
206 | |
207 | erp = 0; | |
25d834e1 JB |
208 | if (vif) { |
209 | sdata = vif_to_sdata(vif); | |
bda3933a | 210 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
211 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
212 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
213 | } | |
c2d1560a JB |
214 | |
215 | /* CTS duration */ | |
8318d78a | 216 | dur = ieee80211_frame_duration(local, 10, rate->bitrate, |
c2d1560a JB |
217 | erp, short_preamble); |
218 | /* Data frame duration */ | |
8318d78a | 219 | dur += ieee80211_frame_duration(local, frame_len, rate->bitrate, |
c2d1560a JB |
220 | erp, short_preamble); |
221 | /* ACK duration */ | |
8318d78a | 222 | dur += ieee80211_frame_duration(local, 10, rate->bitrate, |
c2d1560a JB |
223 | erp, short_preamble); |
224 | ||
225 | return cpu_to_le16(dur); | |
226 | } | |
227 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
228 | ||
32bfd35d JB |
229 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
230 | struct ieee80211_vif *vif, | |
c2d1560a | 231 | size_t frame_len, |
e039fa4a | 232 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
233 | { |
234 | struct ieee80211_local *local = hw_to_local(hw); | |
235 | struct ieee80211_rate *rate; | |
25d834e1 | 236 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 237 | bool short_preamble; |
c2d1560a JB |
238 | int erp; |
239 | u16 dur; | |
2e92e6f2 JB |
240 | struct ieee80211_supported_band *sband; |
241 | ||
242 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
c2d1560a | 243 | |
25d834e1 | 244 | short_preamble = false; |
7e9ed188 | 245 | |
e039fa4a | 246 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 247 | erp = 0; |
25d834e1 JB |
248 | if (vif) { |
249 | sdata = vif_to_sdata(vif); | |
bda3933a | 250 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
251 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
252 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
253 | } | |
c2d1560a JB |
254 | |
255 | /* Data frame duration */ | |
8318d78a | 256 | dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, |
c2d1560a | 257 | erp, short_preamble); |
e039fa4a | 258 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 259 | /* ACK duration */ |
8318d78a | 260 | dur += ieee80211_frame_duration(local, 10, rate->bitrate, |
c2d1560a JB |
261 | erp, short_preamble); |
262 | } | |
263 | ||
264 | return cpu_to_le16(dur); | |
265 | } | |
266 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
267 | ||
ce7c9111 KV |
268 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
269 | enum queue_stop_reason reason) | |
c2d1560a JB |
270 | { |
271 | struct ieee80211_local *local = hw_to_local(hw); | |
272 | ||
e4e72fb4 JB |
273 | if (WARN_ON(queue >= hw->queues)) |
274 | return; | |
ce7c9111 | 275 | |
96f5e66e JB |
276 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
277 | ||
2a577d98 JB |
278 | if (!skb_queue_empty(&local->pending[queue]) && |
279 | local->queue_stop_reasons[queue] == | |
280 | BIT(IEEE80211_QUEUE_STOP_REASON_PENDING)) | |
281 | tasklet_schedule(&local->tx_pending_tasklet); | |
282 | ||
96f5e66e JB |
283 | if (local->queue_stop_reasons[queue] != 0) |
284 | /* someone still has this queue stopped */ | |
285 | return; | |
286 | ||
2a577d98 | 287 | netif_wake_subqueue(local->mdev, queue); |
c2d1560a | 288 | } |
ce7c9111 | 289 | |
96f5e66e JB |
290 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
291 | enum queue_stop_reason reason) | |
ce7c9111 KV |
292 | { |
293 | struct ieee80211_local *local = hw_to_local(hw); | |
294 | unsigned long flags; | |
295 | ||
296 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
297 | __ieee80211_wake_queue(hw, queue, reason); | |
298 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
299 | } | |
300 | ||
301 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
302 | { | |
303 | ieee80211_wake_queue_by_reason(hw, queue, | |
304 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
305 | } | |
c2d1560a JB |
306 | EXPORT_SYMBOL(ieee80211_wake_queue); |
307 | ||
ce7c9111 KV |
308 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
309 | enum queue_stop_reason reason) | |
c2d1560a JB |
310 | { |
311 | struct ieee80211_local *local = hw_to_local(hw); | |
312 | ||
e4e72fb4 JB |
313 | if (WARN_ON(queue >= hw->queues)) |
314 | return; | |
96f5e66e | 315 | |
2a577d98 JB |
316 | /* |
317 | * Only stop if it was previously running, this is necessary | |
318 | * for correct pending packets handling because there we may | |
319 | * start (but not wake) the queue and rely on that. | |
320 | */ | |
321 | if (!local->queue_stop_reasons[queue]) | |
322 | netif_stop_subqueue(local->mdev, queue); | |
ce7c9111 | 323 | |
2a577d98 | 324 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
c2d1560a | 325 | } |
ce7c9111 | 326 | |
96f5e66e JB |
327 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
328 | enum queue_stop_reason reason) | |
ce7c9111 KV |
329 | { |
330 | struct ieee80211_local *local = hw_to_local(hw); | |
331 | unsigned long flags; | |
332 | ||
333 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
334 | __ieee80211_stop_queue(hw, queue, reason); | |
335 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
336 | } | |
337 | ||
338 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
339 | { | |
340 | ieee80211_stop_queue_by_reason(hw, queue, | |
341 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
342 | } | |
c2d1560a JB |
343 | EXPORT_SYMBOL(ieee80211_stop_queue); |
344 | ||
8f77f384 JB |
345 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
346 | struct sk_buff *skb) | |
347 | { | |
348 | struct ieee80211_hw *hw = &local->hw; | |
349 | unsigned long flags; | |
350 | int queue = skb_get_queue_mapping(skb); | |
351 | ||
352 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
353 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
354 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_PENDING); | |
355 | skb_queue_tail(&local->pending[queue], skb); | |
356 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
357 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
358 | } | |
359 | ||
360 | int ieee80211_add_pending_skbs(struct ieee80211_local *local, | |
361 | struct sk_buff_head *skbs) | |
362 | { | |
363 | struct ieee80211_hw *hw = &local->hw; | |
364 | struct sk_buff *skb; | |
365 | unsigned long flags; | |
366 | int queue, ret = 0, i; | |
367 | ||
368 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
369 | for (i = 0; i < hw->queues; i++) | |
370 | __ieee80211_stop_queue(hw, i, | |
371 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
372 | ||
373 | while ((skb = skb_dequeue(skbs))) { | |
374 | ret++; | |
375 | queue = skb_get_queue_mapping(skb); | |
376 | skb_queue_tail(&local->pending[queue], skb); | |
377 | } | |
378 | ||
379 | for (i = 0; i < hw->queues; i++) { | |
380 | if (ret) | |
381 | __ieee80211_stop_queue(hw, i, | |
382 | IEEE80211_QUEUE_STOP_REASON_PENDING); | |
383 | __ieee80211_wake_queue(hw, i, | |
384 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
385 | } | |
386 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
387 | ||
388 | return ret; | |
389 | } | |
390 | ||
ce7c9111 KV |
391 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
392 | enum queue_stop_reason reason) | |
c2d1560a | 393 | { |
ce7c9111 KV |
394 | struct ieee80211_local *local = hw_to_local(hw); |
395 | unsigned long flags; | |
c2d1560a JB |
396 | int i; |
397 | ||
ce7c9111 KV |
398 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
399 | ||
96f5e66e | 400 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
401 | __ieee80211_stop_queue(hw, i, reason); |
402 | ||
403 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
404 | } | |
405 | ||
406 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
407 | { | |
408 | ieee80211_stop_queues_by_reason(hw, | |
409 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
410 | } |
411 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
412 | ||
92ab8535 TW |
413 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
414 | { | |
415 | struct ieee80211_local *local = hw_to_local(hw); | |
96f5e66e | 416 | |
e4e72fb4 JB |
417 | if (WARN_ON(queue >= hw->queues)) |
418 | return true; | |
96f5e66e | 419 | |
92ab8535 TW |
420 | return __netif_subqueue_stopped(local->mdev, queue); |
421 | } | |
422 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
423 | ||
ce7c9111 KV |
424 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
425 | enum queue_stop_reason reason) | |
c2d1560a | 426 | { |
ce7c9111 KV |
427 | struct ieee80211_local *local = hw_to_local(hw); |
428 | unsigned long flags; | |
c2d1560a JB |
429 | int i; |
430 | ||
ce7c9111 KV |
431 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
432 | ||
e4e72fb4 | 433 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
434 | __ieee80211_wake_queue(hw, i, reason); |
435 | ||
436 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
437 | } | |
438 | ||
439 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
440 | { | |
441 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
442 | } |
443 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 444 | |
32bfd35d JB |
445 | void ieee80211_iterate_active_interfaces( |
446 | struct ieee80211_hw *hw, | |
447 | void (*iterator)(void *data, u8 *mac, | |
448 | struct ieee80211_vif *vif), | |
449 | void *data) | |
dabeb344 JB |
450 | { |
451 | struct ieee80211_local *local = hw_to_local(hw); | |
452 | struct ieee80211_sub_if_data *sdata; | |
453 | ||
c771c9d8 | 454 | mutex_lock(&local->iflist_mtx); |
2f561feb ID |
455 | |
456 | list_for_each_entry(sdata, &local->interfaces, list) { | |
457 | switch (sdata->vif.type) { | |
05c914fe JB |
458 | case __NL80211_IFTYPE_AFTER_LAST: |
459 | case NL80211_IFTYPE_UNSPECIFIED: | |
460 | case NL80211_IFTYPE_MONITOR: | |
461 | case NL80211_IFTYPE_AP_VLAN: | |
2f561feb | 462 | continue; |
05c914fe JB |
463 | case NL80211_IFTYPE_AP: |
464 | case NL80211_IFTYPE_STATION: | |
465 | case NL80211_IFTYPE_ADHOC: | |
466 | case NL80211_IFTYPE_WDS: | |
467 | case NL80211_IFTYPE_MESH_POINT: | |
2f561feb ID |
468 | break; |
469 | } | |
2f561feb ID |
470 | if (netif_running(sdata->dev)) |
471 | iterator(data, sdata->dev->dev_addr, | |
472 | &sdata->vif); | |
473 | } | |
474 | ||
c771c9d8 | 475 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
476 | } |
477 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
478 | ||
479 | void ieee80211_iterate_active_interfaces_atomic( | |
480 | struct ieee80211_hw *hw, | |
481 | void (*iterator)(void *data, u8 *mac, | |
482 | struct ieee80211_vif *vif), | |
483 | void *data) | |
484 | { | |
485 | struct ieee80211_local *local = hw_to_local(hw); | |
486 | struct ieee80211_sub_if_data *sdata; | |
487 | ||
e38bad47 | 488 | rcu_read_lock(); |
dabeb344 | 489 | |
e38bad47 | 490 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 491 | switch (sdata->vif.type) { |
05c914fe JB |
492 | case __NL80211_IFTYPE_AFTER_LAST: |
493 | case NL80211_IFTYPE_UNSPECIFIED: | |
494 | case NL80211_IFTYPE_MONITOR: | |
495 | case NL80211_IFTYPE_AP_VLAN: | |
dabeb344 | 496 | continue; |
05c914fe JB |
497 | case NL80211_IFTYPE_AP: |
498 | case NL80211_IFTYPE_STATION: | |
499 | case NL80211_IFTYPE_ADHOC: | |
500 | case NL80211_IFTYPE_WDS: | |
501 | case NL80211_IFTYPE_MESH_POINT: | |
dabeb344 JB |
502 | break; |
503 | } | |
dabeb344 JB |
504 | if (netif_running(sdata->dev)) |
505 | iterator(data, sdata->dev->dev_addr, | |
32bfd35d | 506 | &sdata->vif); |
dabeb344 | 507 | } |
e38bad47 JB |
508 | |
509 | rcu_read_unlock(); | |
dabeb344 | 510 | } |
2f561feb | 511 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
37ffc8da JB |
512 | |
513 | void ieee802_11_parse_elems(u8 *start, size_t len, | |
514 | struct ieee802_11_elems *elems) | |
d91f36db JB |
515 | { |
516 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); | |
517 | } | |
518 | ||
519 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, | |
520 | struct ieee802_11_elems *elems, | |
521 | u64 filter, u32 crc) | |
37ffc8da JB |
522 | { |
523 | size_t left = len; | |
524 | u8 *pos = start; | |
d91f36db | 525 | bool calc_crc = filter != 0; |
37ffc8da JB |
526 | |
527 | memset(elems, 0, sizeof(*elems)); | |
528 | elems->ie_start = start; | |
529 | elems->total_len = len; | |
530 | ||
531 | while (left >= 2) { | |
532 | u8 id, elen; | |
533 | ||
534 | id = *pos++; | |
535 | elen = *pos++; | |
536 | left -= 2; | |
537 | ||
538 | if (elen > left) | |
d91f36db JB |
539 | break; |
540 | ||
541 | if (calc_crc && id < 64 && (filter & BIT(id))) | |
542 | crc = crc32_be(crc, pos - 2, elen + 2); | |
37ffc8da JB |
543 | |
544 | switch (id) { | |
545 | case WLAN_EID_SSID: | |
546 | elems->ssid = pos; | |
547 | elems->ssid_len = elen; | |
548 | break; | |
549 | case WLAN_EID_SUPP_RATES: | |
550 | elems->supp_rates = pos; | |
551 | elems->supp_rates_len = elen; | |
552 | break; | |
553 | case WLAN_EID_FH_PARAMS: | |
554 | elems->fh_params = pos; | |
555 | elems->fh_params_len = elen; | |
556 | break; | |
557 | case WLAN_EID_DS_PARAMS: | |
558 | elems->ds_params = pos; | |
559 | elems->ds_params_len = elen; | |
560 | break; | |
561 | case WLAN_EID_CF_PARAMS: | |
562 | elems->cf_params = pos; | |
563 | elems->cf_params_len = elen; | |
564 | break; | |
565 | case WLAN_EID_TIM: | |
e7ec86f5 JB |
566 | if (elen >= sizeof(struct ieee80211_tim_ie)) { |
567 | elems->tim = (void *)pos; | |
568 | elems->tim_len = elen; | |
569 | } | |
37ffc8da JB |
570 | break; |
571 | case WLAN_EID_IBSS_PARAMS: | |
572 | elems->ibss_params = pos; | |
573 | elems->ibss_params_len = elen; | |
574 | break; | |
575 | case WLAN_EID_CHALLENGE: | |
576 | elems->challenge = pos; | |
577 | elems->challenge_len = elen; | |
578 | break; | |
d91f36db | 579 | case WLAN_EID_VENDOR_SPECIFIC: |
37ffc8da JB |
580 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
581 | pos[2] == 0xf2) { | |
582 | /* Microsoft OUI (00:50:F2) */ | |
d91f36db JB |
583 | |
584 | if (calc_crc) | |
585 | crc = crc32_be(crc, pos - 2, elen + 2); | |
586 | ||
37ffc8da JB |
587 | if (pos[3] == 1) { |
588 | /* OUI Type 1 - WPA IE */ | |
589 | elems->wpa = pos; | |
590 | elems->wpa_len = elen; | |
591 | } else if (elen >= 5 && pos[3] == 2) { | |
d91f36db | 592 | /* OUI Type 2 - WMM IE */ |
37ffc8da JB |
593 | if (pos[4] == 0) { |
594 | elems->wmm_info = pos; | |
595 | elems->wmm_info_len = elen; | |
596 | } else if (pos[4] == 1) { | |
597 | elems->wmm_param = pos; | |
598 | elems->wmm_param_len = elen; | |
599 | } | |
600 | } | |
601 | } | |
602 | break; | |
603 | case WLAN_EID_RSN: | |
604 | elems->rsn = pos; | |
605 | elems->rsn_len = elen; | |
606 | break; | |
607 | case WLAN_EID_ERP_INFO: | |
608 | elems->erp_info = pos; | |
609 | elems->erp_info_len = elen; | |
610 | break; | |
611 | case WLAN_EID_EXT_SUPP_RATES: | |
612 | elems->ext_supp_rates = pos; | |
613 | elems->ext_supp_rates_len = elen; | |
614 | break; | |
615 | case WLAN_EID_HT_CAPABILITY: | |
09914813 JB |
616 | if (elen >= sizeof(struct ieee80211_ht_cap)) |
617 | elems->ht_cap_elem = (void *)pos; | |
37ffc8da | 618 | break; |
d9fe60de JB |
619 | case WLAN_EID_HT_INFORMATION: |
620 | if (elen >= sizeof(struct ieee80211_ht_info)) | |
09914813 | 621 | elems->ht_info_elem = (void *)pos; |
37ffc8da JB |
622 | break; |
623 | case WLAN_EID_MESH_ID: | |
624 | elems->mesh_id = pos; | |
625 | elems->mesh_id_len = elen; | |
626 | break; | |
627 | case WLAN_EID_MESH_CONFIG: | |
628 | elems->mesh_config = pos; | |
629 | elems->mesh_config_len = elen; | |
630 | break; | |
631 | case WLAN_EID_PEER_LINK: | |
632 | elems->peer_link = pos; | |
633 | elems->peer_link_len = elen; | |
634 | break; | |
635 | case WLAN_EID_PREQ: | |
636 | elems->preq = pos; | |
637 | elems->preq_len = elen; | |
638 | break; | |
639 | case WLAN_EID_PREP: | |
640 | elems->prep = pos; | |
641 | elems->prep_len = elen; | |
642 | break; | |
643 | case WLAN_EID_PERR: | |
644 | elems->perr = pos; | |
645 | elems->perr_len = elen; | |
646 | break; | |
647 | case WLAN_EID_CHANNEL_SWITCH: | |
648 | elems->ch_switch_elem = pos; | |
649 | elems->ch_switch_elem_len = elen; | |
650 | break; | |
651 | case WLAN_EID_QUIET: | |
652 | if (!elems->quiet_elem) { | |
653 | elems->quiet_elem = pos; | |
654 | elems->quiet_elem_len = elen; | |
655 | } | |
656 | elems->num_of_quiet_elem++; | |
657 | break; | |
658 | case WLAN_EID_COUNTRY: | |
659 | elems->country_elem = pos; | |
660 | elems->country_elem_len = elen; | |
661 | break; | |
662 | case WLAN_EID_PWR_CONSTRAINT: | |
663 | elems->pwr_constr_elem = pos; | |
664 | elems->pwr_constr_elem_len = elen; | |
665 | break; | |
f797eb7e JM |
666 | case WLAN_EID_TIMEOUT_INTERVAL: |
667 | elems->timeout_int = pos; | |
668 | elems->timeout_int_len = elen; | |
63a5ab82 | 669 | break; |
37ffc8da JB |
670 | default: |
671 | break; | |
672 | } | |
673 | ||
674 | left -= elen; | |
675 | pos += elen; | |
676 | } | |
d91f36db JB |
677 | |
678 | return crc; | |
37ffc8da | 679 | } |
5825fe10 JB |
680 | |
681 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) | |
682 | { | |
683 | struct ieee80211_local *local = sdata->local; | |
684 | struct ieee80211_tx_queue_params qparam; | |
aa837e1d JB |
685 | int queue; |
686 | bool use_11b; | |
687 | int aCWmin, aCWmax; | |
5825fe10 JB |
688 | |
689 | if (!local->ops->conf_tx) | |
690 | return; | |
691 | ||
692 | memset(&qparam, 0, sizeof(qparam)); | |
693 | ||
aa837e1d JB |
694 | use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) && |
695 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); | |
5825fe10 | 696 | |
aa837e1d JB |
697 | for (queue = 0; queue < local_to_hw(local)->queues; queue++) { |
698 | /* Set defaults according to 802.11-2007 Table 7-37 */ | |
699 | aCWmax = 1023; | |
700 | if (use_11b) | |
701 | aCWmin = 31; | |
702 | else | |
703 | aCWmin = 15; | |
704 | ||
705 | switch (queue) { | |
706 | case 3: /* AC_BK */ | |
7ba10a8e JB |
707 | qparam.cw_max = aCWmax; |
708 | qparam.cw_min = aCWmin; | |
aa837e1d JB |
709 | qparam.txop = 0; |
710 | qparam.aifs = 7; | |
711 | break; | |
712 | default: /* never happens but let's not leave undefined */ | |
713 | case 2: /* AC_BE */ | |
7ba10a8e JB |
714 | qparam.cw_max = aCWmax; |
715 | qparam.cw_min = aCWmin; | |
aa837e1d JB |
716 | qparam.txop = 0; |
717 | qparam.aifs = 3; | |
718 | break; | |
719 | case 1: /* AC_VI */ | |
720 | qparam.cw_max = aCWmin; | |
721 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
722 | if (use_11b) | |
723 | qparam.txop = 6016/32; | |
724 | else | |
725 | qparam.txop = 3008/32; | |
726 | qparam.aifs = 2; | |
727 | break; | |
728 | case 0: /* AC_VO */ | |
729 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
730 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
731 | if (use_11b) | |
732 | qparam.txop = 3264/32; | |
733 | else | |
734 | qparam.txop = 1504/32; | |
735 | qparam.aifs = 2; | |
736 | break; | |
737 | } | |
5825fe10 | 738 | |
aa837e1d JB |
739 | drv_conf_tx(local, queue, &qparam); |
740 | } | |
5825fe10 | 741 | } |
e50db65c | 742 | |
46900298 JB |
743 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
744 | const size_t supp_rates_len, | |
745 | const u8 *supp_rates) | |
746 | { | |
747 | struct ieee80211_local *local = sdata->local; | |
748 | int i, have_higher_than_11mbit = 0; | |
749 | ||
750 | /* cf. IEEE 802.11 9.2.12 */ | |
751 | for (i = 0; i < supp_rates_len; i++) | |
752 | if ((supp_rates[i] & 0x7f) * 5 > 110) | |
753 | have_higher_than_11mbit = 1; | |
754 | ||
755 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
756 | have_higher_than_11mbit) | |
757 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
758 | else | |
759 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
760 | ||
761 | ieee80211_set_wmm_default(sdata); | |
762 | } | |
763 | ||
e50db65c JB |
764 | void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
765 | int encrypt) | |
766 | { | |
767 | skb->dev = sdata->local->mdev; | |
768 | skb_set_mac_header(skb, 0); | |
769 | skb_set_network_header(skb, 0); | |
770 | skb_set_transport_header(skb, 0); | |
771 | ||
772 | skb->iif = sdata->dev->ifindex; | |
773 | skb->do_not_encrypt = !encrypt; | |
774 | ||
775 | dev_queue_xmit(skb); | |
776 | } | |
e16751c3 | 777 | |
881d948c | 778 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
96dd22ac JB |
779 | enum ieee80211_band band) |
780 | { | |
781 | struct ieee80211_supported_band *sband; | |
782 | struct ieee80211_rate *bitrates; | |
881d948c | 783 | u32 mandatory_rates; |
96dd22ac JB |
784 | enum ieee80211_rate_flags mandatory_flag; |
785 | int i; | |
786 | ||
787 | sband = local->hw.wiphy->bands[band]; | |
788 | if (!sband) { | |
789 | WARN_ON(1); | |
790 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
791 | } | |
792 | ||
793 | if (band == IEEE80211_BAND_2GHZ) | |
794 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
795 | else | |
796 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
797 | ||
798 | bitrates = sband->bitrates; | |
799 | mandatory_rates = 0; | |
800 | for (i = 0; i < sband->n_bitrates; i++) | |
801 | if (bitrates[i].flags & mandatory_flag) | |
802 | mandatory_rates |= BIT(i); | |
803 | return mandatory_rates; | |
804 | } | |
46900298 JB |
805 | |
806 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
807 | u16 transaction, u16 auth_alg, | |
fffd0934 JB |
808 | u8 *extra, size_t extra_len, const u8 *bssid, |
809 | const u8 *key, u8 key_len, u8 key_idx) | |
46900298 JB |
810 | { |
811 | struct ieee80211_local *local = sdata->local; | |
812 | struct sk_buff *skb; | |
813 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 814 | int err; |
46900298 JB |
815 | |
816 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
65fc73ac | 817 | sizeof(*mgmt) + 6 + extra_len); |
46900298 JB |
818 | if (!skb) { |
819 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
820 | "frame\n", sdata->dev->name); | |
821 | return; | |
822 | } | |
823 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
824 | ||
825 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
826 | memset(mgmt, 0, 24 + 6); | |
827 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
828 | IEEE80211_STYPE_AUTH); | |
46900298 JB |
829 | memcpy(mgmt->da, bssid, ETH_ALEN); |
830 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
831 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
832 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
833 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
834 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
835 | if (extra) | |
836 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 837 | |
fffd0934 JB |
838 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
839 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
840 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
841 | WARN_ON(err); | |
842 | } | |
843 | ||
844 | ieee80211_tx_skb(sdata, skb, 0); | |
46900298 JB |
845 | } |
846 | ||
de95a54b JB |
847 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
848 | const u8 *ie, size_t ie_len) | |
849 | { | |
850 | struct ieee80211_supported_band *sband; | |
851 | u8 *pos, *supp_rates_len, *esupp_rates_len = NULL; | |
852 | int i; | |
853 | ||
854 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
855 | ||
856 | pos = buffer; | |
857 | ||
858 | *pos++ = WLAN_EID_SUPP_RATES; | |
859 | supp_rates_len = pos; | |
860 | *pos++ = 0; | |
861 | ||
862 | for (i = 0; i < sband->n_bitrates; i++) { | |
863 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
864 | ||
865 | if (esupp_rates_len) { | |
866 | *esupp_rates_len += 1; | |
867 | } else if (*supp_rates_len == 8) { | |
868 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
869 | esupp_rates_len = pos; | |
870 | *pos++ = 1; | |
871 | } else | |
872 | *supp_rates_len += 1; | |
873 | ||
874 | *pos++ = rate->bitrate / 5; | |
875 | } | |
876 | ||
5ef2d41a JB |
877 | if (sband->ht_cap.ht_supported) { |
878 | __le16 tmp = cpu_to_le16(sband->ht_cap.cap); | |
879 | ||
880 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
881 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
882 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
883 | memcpy(pos, &tmp, sizeof(u16)); | |
884 | pos += sizeof(u16); | |
885 | /* TODO: needs a define here for << 2 */ | |
886 | *pos++ = sband->ht_cap.ampdu_factor | | |
887 | (sband->ht_cap.ampdu_density << 2); | |
888 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); | |
889 | pos += sizeof(sband->ht_cap.mcs); | |
890 | pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ | |
891 | } | |
892 | ||
de95a54b JB |
893 | /* |
894 | * If adding more here, adjust code in main.c | |
895 | * that calculates local->scan_ies_len. | |
896 | */ | |
897 | ||
898 | if (ie) { | |
899 | memcpy(pos, ie, ie_len); | |
900 | pos += ie_len; | |
901 | } | |
902 | ||
903 | return pos - buffer; | |
904 | } | |
905 | ||
46900298 | 906 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
de95a54b JB |
907 | const u8 *ssid, size_t ssid_len, |
908 | const u8 *ie, size_t ie_len) | |
46900298 JB |
909 | { |
910 | struct ieee80211_local *local = sdata->local; | |
46900298 JB |
911 | struct sk_buff *skb; |
912 | struct ieee80211_mgmt *mgmt; | |
de95a54b | 913 | u8 *pos; |
46900298 JB |
914 | |
915 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + | |
65fc73ac | 916 | ie_len); |
46900298 JB |
917 | if (!skb) { |
918 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
919 | "request\n", sdata->dev->name); | |
920 | return; | |
921 | } | |
922 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
923 | ||
924 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
925 | memset(mgmt, 0, 24); | |
926 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
927 | IEEE80211_STYPE_PROBE_REQ); | |
928 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
929 | if (dst) { | |
930 | memcpy(mgmt->da, dst, ETH_ALEN); | |
931 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
932 | } else { | |
933 | memset(mgmt->da, 0xff, ETH_ALEN); | |
934 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
935 | } | |
936 | pos = skb_put(skb, 2 + ssid_len); | |
937 | *pos++ = WLAN_EID_SSID; | |
938 | *pos++ = ssid_len; | |
939 | memcpy(pos, ssid, ssid_len); | |
de95a54b | 940 | pos += ssid_len; |
46900298 | 941 | |
de95a54b | 942 | skb_put(skb, ieee80211_build_preq_ies(local, pos, ie, ie_len)); |
46900298 JB |
943 | |
944 | ieee80211_tx_skb(sdata, skb, 0); | |
945 | } | |
946 | ||
947 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
948 | struct ieee802_11_elems *elems, | |
949 | enum ieee80211_band band) | |
950 | { | |
951 | struct ieee80211_supported_band *sband; | |
952 | struct ieee80211_rate *bitrates; | |
953 | size_t num_rates; | |
954 | u32 supp_rates; | |
955 | int i, j; | |
956 | sband = local->hw.wiphy->bands[band]; | |
957 | ||
958 | if (!sband) { | |
959 | WARN_ON(1); | |
960 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
961 | } | |
962 | ||
963 | bitrates = sband->bitrates; | |
964 | num_rates = sband->n_bitrates; | |
965 | supp_rates = 0; | |
966 | for (i = 0; i < elems->supp_rates_len + | |
967 | elems->ext_supp_rates_len; i++) { | |
968 | u8 rate = 0; | |
969 | int own_rate; | |
970 | if (i < elems->supp_rates_len) | |
971 | rate = elems->supp_rates[i]; | |
972 | else if (elems->ext_supp_rates) | |
973 | rate = elems->ext_supp_rates | |
974 | [i - elems->supp_rates_len]; | |
975 | own_rate = 5 * (rate & 0x7f); | |
976 | for (j = 0; j < num_rates; j++) | |
977 | if (bitrates[j].bitrate == own_rate) | |
978 | supp_rates |= BIT(j); | |
979 | } | |
980 | return supp_rates; | |
981 | } | |
f2753ddb JB |
982 | |
983 | int ieee80211_reconfig(struct ieee80211_local *local) | |
984 | { | |
985 | struct ieee80211_hw *hw = &local->hw; | |
986 | struct ieee80211_sub_if_data *sdata; | |
987 | struct ieee80211_if_init_conf conf; | |
988 | struct sta_info *sta; | |
989 | unsigned long flags; | |
990 | int res; | |
5bb644a0 JB |
991 | bool from_suspend = local->suspended; |
992 | ||
993 | /* | |
994 | * We're going to start the hardware, at that point | |
995 | * we are no longer suspended and can RX frames. | |
996 | */ | |
997 | local->suspended = false; | |
f2753ddb JB |
998 | |
999 | /* restart hardware */ | |
1000 | if (local->open_count) { | |
24487981 | 1001 | res = drv_start(local); |
f2753ddb | 1002 | |
1f87f7d3 | 1003 | ieee80211_led_radio(local, true); |
f2753ddb JB |
1004 | } |
1005 | ||
1006 | /* add interfaces */ | |
1007 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1008 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1009 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1010 | netif_running(sdata->dev)) { | |
1011 | conf.vif = &sdata->vif; | |
1012 | conf.type = sdata->vif.type; | |
1013 | conf.mac_addr = sdata->dev->dev_addr; | |
24487981 | 1014 | res = drv_add_interface(local, &conf); |
f2753ddb JB |
1015 | } |
1016 | } | |
1017 | ||
1018 | /* add STAs back */ | |
1019 | if (local->ops->sta_notify) { | |
1020 | spin_lock_irqsave(&local->sta_lock, flags); | |
1021 | list_for_each_entry(sta, &local->sta_list, list) { | |
5bb644a0 | 1022 | sdata = sta->sdata; |
f2753ddb JB |
1023 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1024 | sdata = container_of(sdata->bss, | |
1025 | struct ieee80211_sub_if_data, | |
1026 | u.ap); | |
1027 | ||
24487981 JB |
1028 | drv_sta_notify(local, &sdata->vif, STA_NOTIFY_ADD, |
1029 | &sta->sta); | |
f2753ddb JB |
1030 | } |
1031 | spin_unlock_irqrestore(&local->sta_lock, flags); | |
1032 | } | |
1033 | ||
1034 | /* Clear Suspend state so that ADDBA requests can be processed */ | |
1035 | ||
1036 | rcu_read_lock(); | |
1037 | ||
1038 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { | |
1039 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
1040 | clear_sta_flags(sta, WLAN_STA_SUSPEND); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | rcu_read_unlock(); | |
1045 | ||
1046 | /* setup RTS threshold */ | |
24487981 | 1047 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); |
f2753ddb JB |
1048 | |
1049 | /* reconfigure hardware */ | |
1050 | ieee80211_hw_config(local, ~0); | |
1051 | ||
1052 | netif_addr_lock_bh(local->mdev); | |
1053 | ieee80211_configure_filter(local); | |
1054 | netif_addr_unlock_bh(local->mdev); | |
1055 | ||
1056 | /* Finally also reconfigure all the BSS information */ | |
1057 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1058 | u32 changed = ~0; | |
1059 | if (!netif_running(sdata->dev)) | |
1060 | continue; | |
1061 | switch (sdata->vif.type) { | |
1062 | case NL80211_IFTYPE_STATION: | |
1063 | /* disable beacon change bits */ | |
2d0ddec5 JB |
1064 | changed &= ~(BSS_CHANGED_BEACON | |
1065 | BSS_CHANGED_BEACON_ENABLED); | |
f2753ddb JB |
1066 | /* fall through */ |
1067 | case NL80211_IFTYPE_ADHOC: | |
1068 | case NL80211_IFTYPE_AP: | |
1069 | case NL80211_IFTYPE_MESH_POINT: | |
2d0ddec5 | 1070 | ieee80211_bss_info_change_notify(sdata, changed); |
f2753ddb JB |
1071 | break; |
1072 | case NL80211_IFTYPE_WDS: | |
1073 | break; | |
1074 | case NL80211_IFTYPE_AP_VLAN: | |
1075 | case NL80211_IFTYPE_MONITOR: | |
1076 | /* ignore virtual */ | |
1077 | break; | |
1078 | case NL80211_IFTYPE_UNSPECIFIED: | |
1079 | case __NL80211_IFTYPE_AFTER_LAST: | |
1080 | WARN_ON(1); | |
1081 | break; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | /* add back keys */ | |
1086 | list_for_each_entry(sdata, &local->interfaces, list) | |
1087 | if (netif_running(sdata->dev)) | |
1088 | ieee80211_enable_keys(sdata); | |
1089 | ||
1090 | ieee80211_wake_queues_by_reason(hw, | |
1091 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
1092 | ||
5bb644a0 JB |
1093 | /* |
1094 | * If this is for hw restart things are still running. | |
1095 | * We may want to change that later, however. | |
1096 | */ | |
1097 | if (!from_suspend) | |
1098 | return 0; | |
1099 | ||
1100 | #ifdef CONFIG_PM | |
1101 | local->suspended = false; | |
1102 | ||
1103 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1104 | switch(sdata->vif.type) { | |
1105 | case NL80211_IFTYPE_STATION: | |
1106 | ieee80211_sta_restart(sdata); | |
1107 | break; | |
1108 | case NL80211_IFTYPE_ADHOC: | |
1109 | ieee80211_ibss_restart(sdata); | |
1110 | break; | |
1111 | case NL80211_IFTYPE_MESH_POINT: | |
1112 | ieee80211_mesh_restart(sdata); | |
1113 | break; | |
1114 | default: | |
1115 | break; | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | add_timer(&local->sta_cleanup); | |
1120 | ||
1121 | spin_lock_irqsave(&local->sta_lock, flags); | |
1122 | list_for_each_entry(sta, &local->sta_list, list) | |
1123 | mesh_plink_restart(sta); | |
1124 | spin_unlock_irqrestore(&local->sta_lock, flags); | |
1125 | #else | |
1126 | WARN_ON(1); | |
1127 | #endif | |
f2753ddb JB |
1128 | return 0; |
1129 | } |