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