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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" |
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); | |
cf0277e7 | 272 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 273 | |
e4e72fb4 JB |
274 | if (WARN_ON(queue >= hw->queues)) |
275 | return; | |
ce7c9111 | 276 | |
96f5e66e JB |
277 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
278 | ||
279 | if (local->queue_stop_reasons[queue] != 0) | |
280 | /* someone still has this queue stopped */ | |
281 | return; | |
282 | ||
3b8d81e0 JB |
283 | if (!skb_queue_empty(&local->pending[queue])) |
284 | tasklet_schedule(&local->tx_pending_tasklet); | |
cf0277e7 JB |
285 | |
286 | rcu_read_lock(); | |
287 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
288 | netif_tx_wake_queue(netdev_get_tx_queue(sdata->dev, queue)); | |
289 | rcu_read_unlock(); | |
c2d1560a | 290 | } |
ce7c9111 | 291 | |
96f5e66e JB |
292 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
293 | enum queue_stop_reason reason) | |
ce7c9111 KV |
294 | { |
295 | struct ieee80211_local *local = hw_to_local(hw); | |
296 | unsigned long flags; | |
297 | ||
298 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
299 | __ieee80211_wake_queue(hw, queue, reason); | |
300 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
301 | } | |
302 | ||
303 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
304 | { | |
305 | ieee80211_wake_queue_by_reason(hw, queue, | |
306 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
307 | } | |
c2d1560a JB |
308 | EXPORT_SYMBOL(ieee80211_wake_queue); |
309 | ||
ce7c9111 KV |
310 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
311 | enum queue_stop_reason reason) | |
c2d1560a JB |
312 | { |
313 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 314 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 315 | |
e4e72fb4 JB |
316 | if (WARN_ON(queue >= hw->queues)) |
317 | return; | |
96f5e66e | 318 | |
2a577d98 | 319 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 JB |
320 | |
321 | rcu_read_lock(); | |
322 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
323 | netif_tx_stop_queue(netdev_get_tx_queue(sdata->dev, queue)); | |
324 | rcu_read_unlock(); | |
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); | |
a7bc376c JB |
351 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
352 | ||
353 | if (WARN_ON(!info->control.vif)) { | |
0819663d | 354 | kfree_skb(skb); |
a7bc376c JB |
355 | return; |
356 | } | |
8f77f384 JB |
357 | |
358 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
359 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 360 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
361 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
362 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
363 | } | |
364 | ||
365 | int ieee80211_add_pending_skbs(struct ieee80211_local *local, | |
366 | struct sk_buff_head *skbs) | |
367 | { | |
368 | struct ieee80211_hw *hw = &local->hw; | |
369 | struct sk_buff *skb; | |
370 | unsigned long flags; | |
371 | int queue, ret = 0, i; | |
372 | ||
373 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
374 | for (i = 0; i < hw->queues; i++) | |
375 | __ieee80211_stop_queue(hw, i, | |
376 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
377 | ||
378 | while ((skb = skb_dequeue(skbs))) { | |
a7bc376c JB |
379 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
380 | ||
381 | if (WARN_ON(!info->control.vif)) { | |
0819663d | 382 | kfree_skb(skb); |
a7bc376c JB |
383 | continue; |
384 | } | |
385 | ||
8f77f384 JB |
386 | ret++; |
387 | queue = skb_get_queue_mapping(skb); | |
3b8d81e0 | 388 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
389 | } |
390 | ||
3b8d81e0 | 391 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
392 | __ieee80211_wake_queue(hw, i, |
393 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 JB |
394 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
395 | ||
396 | return ret; | |
397 | } | |
398 | ||
ce7c9111 KV |
399 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
400 | enum queue_stop_reason reason) | |
c2d1560a | 401 | { |
ce7c9111 KV |
402 | struct ieee80211_local *local = hw_to_local(hw); |
403 | unsigned long flags; | |
c2d1560a JB |
404 | int i; |
405 | ||
ce7c9111 KV |
406 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
407 | ||
96f5e66e | 408 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
409 | __ieee80211_stop_queue(hw, i, reason); |
410 | ||
411 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
412 | } | |
413 | ||
414 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
415 | { | |
416 | ieee80211_stop_queues_by_reason(hw, | |
417 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
418 | } |
419 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
420 | ||
92ab8535 TW |
421 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
422 | { | |
423 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
424 | unsigned long flags; |
425 | int ret; | |
96f5e66e | 426 | |
e4e72fb4 JB |
427 | if (WARN_ON(queue >= hw->queues)) |
428 | return true; | |
96f5e66e | 429 | |
3b8d81e0 JB |
430 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
431 | ret = !!local->queue_stop_reasons[queue]; | |
432 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
433 | return ret; | |
92ab8535 TW |
434 | } |
435 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
436 | ||
ce7c9111 KV |
437 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
438 | enum queue_stop_reason reason) | |
c2d1560a | 439 | { |
ce7c9111 KV |
440 | struct ieee80211_local *local = hw_to_local(hw); |
441 | unsigned long flags; | |
c2d1560a JB |
442 | int i; |
443 | ||
ce7c9111 KV |
444 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
445 | ||
e4e72fb4 | 446 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
447 | __ieee80211_wake_queue(hw, i, reason); |
448 | ||
449 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
450 | } | |
451 | ||
452 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
453 | { | |
454 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
455 | } |
456 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 457 | |
32bfd35d JB |
458 | void ieee80211_iterate_active_interfaces( |
459 | struct ieee80211_hw *hw, | |
460 | void (*iterator)(void *data, u8 *mac, | |
461 | struct ieee80211_vif *vif), | |
462 | void *data) | |
dabeb344 JB |
463 | { |
464 | struct ieee80211_local *local = hw_to_local(hw); | |
465 | struct ieee80211_sub_if_data *sdata; | |
466 | ||
c771c9d8 | 467 | mutex_lock(&local->iflist_mtx); |
2f561feb ID |
468 | |
469 | list_for_each_entry(sdata, &local->interfaces, list) { | |
470 | switch (sdata->vif.type) { | |
05c914fe JB |
471 | case __NL80211_IFTYPE_AFTER_LAST: |
472 | case NL80211_IFTYPE_UNSPECIFIED: | |
473 | case NL80211_IFTYPE_MONITOR: | |
474 | case NL80211_IFTYPE_AP_VLAN: | |
2f561feb | 475 | continue; |
05c914fe JB |
476 | case NL80211_IFTYPE_AP: |
477 | case NL80211_IFTYPE_STATION: | |
478 | case NL80211_IFTYPE_ADHOC: | |
479 | case NL80211_IFTYPE_WDS: | |
480 | case NL80211_IFTYPE_MESH_POINT: | |
2f561feb ID |
481 | break; |
482 | } | |
2f561feb ID |
483 | if (netif_running(sdata->dev)) |
484 | iterator(data, sdata->dev->dev_addr, | |
485 | &sdata->vif); | |
486 | } | |
487 | ||
c771c9d8 | 488 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
489 | } |
490 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
491 | ||
492 | void ieee80211_iterate_active_interfaces_atomic( | |
493 | struct ieee80211_hw *hw, | |
494 | void (*iterator)(void *data, u8 *mac, | |
495 | struct ieee80211_vif *vif), | |
496 | void *data) | |
497 | { | |
498 | struct ieee80211_local *local = hw_to_local(hw); | |
499 | struct ieee80211_sub_if_data *sdata; | |
500 | ||
e38bad47 | 501 | rcu_read_lock(); |
dabeb344 | 502 | |
e38bad47 | 503 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 504 | switch (sdata->vif.type) { |
05c914fe JB |
505 | case __NL80211_IFTYPE_AFTER_LAST: |
506 | case NL80211_IFTYPE_UNSPECIFIED: | |
507 | case NL80211_IFTYPE_MONITOR: | |
508 | case NL80211_IFTYPE_AP_VLAN: | |
dabeb344 | 509 | continue; |
05c914fe JB |
510 | case NL80211_IFTYPE_AP: |
511 | case NL80211_IFTYPE_STATION: | |
512 | case NL80211_IFTYPE_ADHOC: | |
513 | case NL80211_IFTYPE_WDS: | |
514 | case NL80211_IFTYPE_MESH_POINT: | |
dabeb344 JB |
515 | break; |
516 | } | |
dabeb344 JB |
517 | if (netif_running(sdata->dev)) |
518 | iterator(data, sdata->dev->dev_addr, | |
32bfd35d | 519 | &sdata->vif); |
dabeb344 | 520 | } |
e38bad47 JB |
521 | |
522 | rcu_read_unlock(); | |
dabeb344 | 523 | } |
2f561feb | 524 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
37ffc8da | 525 | |
42935eca LR |
526 | /* |
527 | * Nothing should have been stuffed into the workqueue during | |
528 | * the suspend->resume cycle. If this WARN is seen then there | |
529 | * is a bug with either the driver suspend or something in | |
530 | * mac80211 stuffing into the workqueue which we haven't yet | |
531 | * cleared during mac80211's suspend cycle. | |
532 | */ | |
533 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
534 | { | |
ceb99fe0 JB |
535 | if (WARN(local->suspended && !local->resuming, |
536 | "queueing ieee80211 work while going to suspend\n")) | |
537 | return false; | |
42935eca LR |
538 | |
539 | return true; | |
540 | } | |
541 | ||
542 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
543 | { | |
544 | struct ieee80211_local *local = hw_to_local(hw); | |
545 | ||
546 | if (!ieee80211_can_queue_work(local)) | |
547 | return; | |
548 | ||
549 | queue_work(local->workqueue, work); | |
550 | } | |
551 | EXPORT_SYMBOL(ieee80211_queue_work); | |
552 | ||
553 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
554 | struct delayed_work *dwork, | |
555 | unsigned long delay) | |
556 | { | |
557 | struct ieee80211_local *local = hw_to_local(hw); | |
558 | ||
559 | if (!ieee80211_can_queue_work(local)) | |
560 | return; | |
561 | ||
562 | queue_delayed_work(local->workqueue, dwork, delay); | |
563 | } | |
564 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
565 | ||
37ffc8da JB |
566 | void ieee802_11_parse_elems(u8 *start, size_t len, |
567 | struct ieee802_11_elems *elems) | |
d91f36db JB |
568 | { |
569 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); | |
570 | } | |
571 | ||
572 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, | |
573 | struct ieee802_11_elems *elems, | |
574 | u64 filter, u32 crc) | |
37ffc8da JB |
575 | { |
576 | size_t left = len; | |
577 | u8 *pos = start; | |
d91f36db | 578 | bool calc_crc = filter != 0; |
37ffc8da JB |
579 | |
580 | memset(elems, 0, sizeof(*elems)); | |
581 | elems->ie_start = start; | |
582 | elems->total_len = len; | |
583 | ||
584 | while (left >= 2) { | |
585 | u8 id, elen; | |
586 | ||
587 | id = *pos++; | |
588 | elen = *pos++; | |
589 | left -= 2; | |
590 | ||
591 | if (elen > left) | |
d91f36db JB |
592 | break; |
593 | ||
1814077f | 594 | if (calc_crc && id < 64 && (filter & (1ULL << id))) |
d91f36db | 595 | crc = crc32_be(crc, pos - 2, elen + 2); |
37ffc8da JB |
596 | |
597 | switch (id) { | |
598 | case WLAN_EID_SSID: | |
599 | elems->ssid = pos; | |
600 | elems->ssid_len = elen; | |
601 | break; | |
602 | case WLAN_EID_SUPP_RATES: | |
603 | elems->supp_rates = pos; | |
604 | elems->supp_rates_len = elen; | |
605 | break; | |
606 | case WLAN_EID_FH_PARAMS: | |
607 | elems->fh_params = pos; | |
608 | elems->fh_params_len = elen; | |
609 | break; | |
610 | case WLAN_EID_DS_PARAMS: | |
611 | elems->ds_params = pos; | |
612 | elems->ds_params_len = elen; | |
613 | break; | |
614 | case WLAN_EID_CF_PARAMS: | |
615 | elems->cf_params = pos; | |
616 | elems->cf_params_len = elen; | |
617 | break; | |
618 | case WLAN_EID_TIM: | |
e7ec86f5 JB |
619 | if (elen >= sizeof(struct ieee80211_tim_ie)) { |
620 | elems->tim = (void *)pos; | |
621 | elems->tim_len = elen; | |
622 | } | |
37ffc8da JB |
623 | break; |
624 | case WLAN_EID_IBSS_PARAMS: | |
625 | elems->ibss_params = pos; | |
626 | elems->ibss_params_len = elen; | |
627 | break; | |
628 | case WLAN_EID_CHALLENGE: | |
629 | elems->challenge = pos; | |
630 | elems->challenge_len = elen; | |
631 | break; | |
d91f36db | 632 | case WLAN_EID_VENDOR_SPECIFIC: |
37ffc8da JB |
633 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
634 | pos[2] == 0xf2) { | |
635 | /* Microsoft OUI (00:50:F2) */ | |
d91f36db JB |
636 | |
637 | if (calc_crc) | |
638 | crc = crc32_be(crc, pos - 2, elen + 2); | |
639 | ||
37ffc8da JB |
640 | if (pos[3] == 1) { |
641 | /* OUI Type 1 - WPA IE */ | |
642 | elems->wpa = pos; | |
643 | elems->wpa_len = elen; | |
644 | } else if (elen >= 5 && pos[3] == 2) { | |
d91f36db | 645 | /* OUI Type 2 - WMM IE */ |
37ffc8da JB |
646 | if (pos[4] == 0) { |
647 | elems->wmm_info = pos; | |
648 | elems->wmm_info_len = elen; | |
649 | } else if (pos[4] == 1) { | |
650 | elems->wmm_param = pos; | |
651 | elems->wmm_param_len = elen; | |
652 | } | |
653 | } | |
654 | } | |
655 | break; | |
656 | case WLAN_EID_RSN: | |
657 | elems->rsn = pos; | |
658 | elems->rsn_len = elen; | |
659 | break; | |
660 | case WLAN_EID_ERP_INFO: | |
661 | elems->erp_info = pos; | |
662 | elems->erp_info_len = elen; | |
663 | break; | |
664 | case WLAN_EID_EXT_SUPP_RATES: | |
665 | elems->ext_supp_rates = pos; | |
666 | elems->ext_supp_rates_len = elen; | |
667 | break; | |
668 | case WLAN_EID_HT_CAPABILITY: | |
09914813 JB |
669 | if (elen >= sizeof(struct ieee80211_ht_cap)) |
670 | elems->ht_cap_elem = (void *)pos; | |
37ffc8da | 671 | break; |
d9fe60de JB |
672 | case WLAN_EID_HT_INFORMATION: |
673 | if (elen >= sizeof(struct ieee80211_ht_info)) | |
09914813 | 674 | elems->ht_info_elem = (void *)pos; |
37ffc8da JB |
675 | break; |
676 | case WLAN_EID_MESH_ID: | |
677 | elems->mesh_id = pos; | |
678 | elems->mesh_id_len = elen; | |
679 | break; | |
680 | case WLAN_EID_MESH_CONFIG: | |
136cfa28 RP |
681 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) |
682 | elems->mesh_config = (void *)pos; | |
37ffc8da JB |
683 | break; |
684 | case WLAN_EID_PEER_LINK: | |
685 | elems->peer_link = pos; | |
686 | elems->peer_link_len = elen; | |
687 | break; | |
688 | case WLAN_EID_PREQ: | |
689 | elems->preq = pos; | |
690 | elems->preq_len = elen; | |
691 | break; | |
692 | case WLAN_EID_PREP: | |
693 | elems->prep = pos; | |
694 | elems->prep_len = elen; | |
695 | break; | |
696 | case WLAN_EID_PERR: | |
697 | elems->perr = pos; | |
698 | elems->perr_len = elen; | |
699 | break; | |
90a5e169 RP |
700 | case WLAN_EID_RANN: |
701 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
702 | elems->rann = (void *)pos; | |
703 | break; | |
37ffc8da JB |
704 | case WLAN_EID_CHANNEL_SWITCH: |
705 | elems->ch_switch_elem = pos; | |
706 | elems->ch_switch_elem_len = elen; | |
707 | break; | |
708 | case WLAN_EID_QUIET: | |
709 | if (!elems->quiet_elem) { | |
710 | elems->quiet_elem = pos; | |
711 | elems->quiet_elem_len = elen; | |
712 | } | |
713 | elems->num_of_quiet_elem++; | |
714 | break; | |
715 | case WLAN_EID_COUNTRY: | |
716 | elems->country_elem = pos; | |
717 | elems->country_elem_len = elen; | |
718 | break; | |
719 | case WLAN_EID_PWR_CONSTRAINT: | |
720 | elems->pwr_constr_elem = pos; | |
721 | elems->pwr_constr_elem_len = elen; | |
722 | break; | |
f797eb7e JM |
723 | case WLAN_EID_TIMEOUT_INTERVAL: |
724 | elems->timeout_int = pos; | |
725 | elems->timeout_int_len = elen; | |
63a5ab82 | 726 | break; |
37ffc8da JB |
727 | default: |
728 | break; | |
729 | } | |
730 | ||
731 | left -= elen; | |
732 | pos += elen; | |
733 | } | |
d91f36db JB |
734 | |
735 | return crc; | |
37ffc8da | 736 | } |
5825fe10 JB |
737 | |
738 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) | |
739 | { | |
740 | struct ieee80211_local *local = sdata->local; | |
741 | struct ieee80211_tx_queue_params qparam; | |
aa837e1d JB |
742 | int queue; |
743 | bool use_11b; | |
744 | int aCWmin, aCWmax; | |
5825fe10 JB |
745 | |
746 | if (!local->ops->conf_tx) | |
747 | return; | |
748 | ||
749 | memset(&qparam, 0, sizeof(qparam)); | |
750 | ||
aa837e1d JB |
751 | use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) && |
752 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); | |
5825fe10 | 753 | |
aa837e1d JB |
754 | for (queue = 0; queue < local_to_hw(local)->queues; queue++) { |
755 | /* Set defaults according to 802.11-2007 Table 7-37 */ | |
756 | aCWmax = 1023; | |
757 | if (use_11b) | |
758 | aCWmin = 31; | |
759 | else | |
760 | aCWmin = 15; | |
761 | ||
762 | switch (queue) { | |
763 | case 3: /* AC_BK */ | |
7ba10a8e JB |
764 | qparam.cw_max = aCWmax; |
765 | qparam.cw_min = aCWmin; | |
aa837e1d JB |
766 | qparam.txop = 0; |
767 | qparam.aifs = 7; | |
768 | break; | |
769 | default: /* never happens but let's not leave undefined */ | |
770 | case 2: /* AC_BE */ | |
7ba10a8e JB |
771 | qparam.cw_max = aCWmax; |
772 | qparam.cw_min = aCWmin; | |
aa837e1d JB |
773 | qparam.txop = 0; |
774 | qparam.aifs = 3; | |
775 | break; | |
776 | case 1: /* AC_VI */ | |
777 | qparam.cw_max = aCWmin; | |
778 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
779 | if (use_11b) | |
780 | qparam.txop = 6016/32; | |
781 | else | |
782 | qparam.txop = 3008/32; | |
783 | qparam.aifs = 2; | |
784 | break; | |
785 | case 0: /* AC_VO */ | |
786 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
787 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
788 | if (use_11b) | |
789 | qparam.txop = 3264/32; | |
790 | else | |
791 | qparam.txop = 1504/32; | |
792 | qparam.aifs = 2; | |
793 | break; | |
794 | } | |
5825fe10 | 795 | |
aa837e1d JB |
796 | drv_conf_tx(local, queue, &qparam); |
797 | } | |
5825fe10 | 798 | } |
e50db65c | 799 | |
46900298 JB |
800 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
801 | const size_t supp_rates_len, | |
802 | const u8 *supp_rates) | |
803 | { | |
804 | struct ieee80211_local *local = sdata->local; | |
805 | int i, have_higher_than_11mbit = 0; | |
806 | ||
807 | /* cf. IEEE 802.11 9.2.12 */ | |
808 | for (i = 0; i < supp_rates_len; i++) | |
809 | if ((supp_rates[i] & 0x7f) * 5 > 110) | |
810 | have_higher_than_11mbit = 1; | |
811 | ||
812 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
813 | have_higher_than_11mbit) | |
814 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
815 | else | |
816 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
817 | ||
818 | ieee80211_set_wmm_default(sdata); | |
819 | } | |
820 | ||
881d948c | 821 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
96dd22ac JB |
822 | enum ieee80211_band band) |
823 | { | |
824 | struct ieee80211_supported_band *sband; | |
825 | struct ieee80211_rate *bitrates; | |
881d948c | 826 | u32 mandatory_rates; |
96dd22ac JB |
827 | enum ieee80211_rate_flags mandatory_flag; |
828 | int i; | |
829 | ||
830 | sband = local->hw.wiphy->bands[band]; | |
831 | if (!sband) { | |
832 | WARN_ON(1); | |
833 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
834 | } | |
835 | ||
836 | if (band == IEEE80211_BAND_2GHZ) | |
837 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
838 | else | |
839 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
840 | ||
841 | bitrates = sband->bitrates; | |
842 | mandatory_rates = 0; | |
843 | for (i = 0; i < sband->n_bitrates; i++) | |
844 | if (bitrates[i].flags & mandatory_flag) | |
845 | mandatory_rates |= BIT(i); | |
846 | return mandatory_rates; | |
847 | } | |
46900298 JB |
848 | |
849 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
850 | u16 transaction, u16 auth_alg, | |
fffd0934 JB |
851 | u8 *extra, size_t extra_len, const u8 *bssid, |
852 | const u8 *key, u8 key_len, u8 key_idx) | |
46900298 JB |
853 | { |
854 | struct ieee80211_local *local = sdata->local; | |
855 | struct sk_buff *skb; | |
856 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 857 | int err; |
46900298 JB |
858 | |
859 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
65fc73ac | 860 | sizeof(*mgmt) + 6 + extra_len); |
46900298 JB |
861 | if (!skb) { |
862 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
863 | "frame\n", sdata->dev->name); | |
864 | return; | |
865 | } | |
866 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
867 | ||
868 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
869 | memset(mgmt, 0, 24 + 6); | |
870 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
871 | IEEE80211_STYPE_AUTH); | |
46900298 JB |
872 | memcpy(mgmt->da, bssid, ETH_ALEN); |
873 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
874 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
875 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
876 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
877 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
878 | if (extra) | |
879 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 880 | |
fffd0934 JB |
881 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
882 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
883 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
884 | WARN_ON(err); | |
885 | } | |
886 | ||
62ae67be JB |
887 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
888 | ieee80211_tx_skb(sdata, skb); | |
46900298 JB |
889 | } |
890 | ||
de95a54b | 891 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
4d36ec58 JB |
892 | const u8 *ie, size_t ie_len, |
893 | enum ieee80211_band band) | |
de95a54b JB |
894 | { |
895 | struct ieee80211_supported_band *sband; | |
896 | u8 *pos, *supp_rates_len, *esupp_rates_len = NULL; | |
897 | int i; | |
898 | ||
4d36ec58 | 899 | sband = local->hw.wiphy->bands[band]; |
de95a54b JB |
900 | |
901 | pos = buffer; | |
902 | ||
903 | *pos++ = WLAN_EID_SUPP_RATES; | |
904 | supp_rates_len = pos; | |
905 | *pos++ = 0; | |
906 | ||
907 | for (i = 0; i < sband->n_bitrates; i++) { | |
908 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
909 | ||
910 | if (esupp_rates_len) { | |
911 | *esupp_rates_len += 1; | |
912 | } else if (*supp_rates_len == 8) { | |
913 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
914 | esupp_rates_len = pos; | |
915 | *pos++ = 1; | |
916 | } else | |
917 | *supp_rates_len += 1; | |
918 | ||
919 | *pos++ = rate->bitrate / 5; | |
920 | } | |
921 | ||
5ef2d41a JB |
922 | if (sband->ht_cap.ht_supported) { |
923 | __le16 tmp = cpu_to_le16(sband->ht_cap.cap); | |
924 | ||
925 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
926 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
927 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
928 | memcpy(pos, &tmp, sizeof(u16)); | |
929 | pos += sizeof(u16); | |
930 | /* TODO: needs a define here for << 2 */ | |
931 | *pos++ = sband->ht_cap.ampdu_factor | | |
932 | (sband->ht_cap.ampdu_density << 2); | |
933 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); | |
934 | pos += sizeof(sband->ht_cap.mcs); | |
935 | pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ | |
936 | } | |
937 | ||
de95a54b JB |
938 | /* |
939 | * If adding more here, adjust code in main.c | |
940 | * that calculates local->scan_ies_len. | |
941 | */ | |
942 | ||
943 | if (ie) { | |
944 | memcpy(pos, ie, ie_len); | |
945 | pos += ie_len; | |
946 | } | |
947 | ||
948 | return pos - buffer; | |
949 | } | |
950 | ||
46900298 | 951 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
de95a54b JB |
952 | const u8 *ssid, size_t ssid_len, |
953 | const u8 *ie, size_t ie_len) | |
46900298 JB |
954 | { |
955 | struct ieee80211_local *local = sdata->local; | |
46900298 JB |
956 | struct sk_buff *skb; |
957 | struct ieee80211_mgmt *mgmt; | |
de95a54b | 958 | u8 *pos; |
46900298 JB |
959 | |
960 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + | |
65fc73ac | 961 | ie_len); |
46900298 JB |
962 | if (!skb) { |
963 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
964 | "request\n", sdata->dev->name); | |
965 | return; | |
966 | } | |
967 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
968 | ||
969 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
970 | memset(mgmt, 0, 24); | |
971 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
972 | IEEE80211_STYPE_PROBE_REQ); | |
973 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
974 | if (dst) { | |
975 | memcpy(mgmt->da, dst, ETH_ALEN); | |
976 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
977 | } else { | |
978 | memset(mgmt->da, 0xff, ETH_ALEN); | |
979 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
980 | } | |
981 | pos = skb_put(skb, 2 + ssid_len); | |
982 | *pos++ = WLAN_EID_SSID; | |
983 | *pos++ = ssid_len; | |
984 | memcpy(pos, ssid, ssid_len); | |
de95a54b | 985 | pos += ssid_len; |
46900298 | 986 | |
4d36ec58 JB |
987 | skb_put(skb, ieee80211_build_preq_ies(local, pos, ie, ie_len, |
988 | local->hw.conf.channel->band)); | |
46900298 | 989 | |
62ae67be JB |
990 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
991 | ieee80211_tx_skb(sdata, skb); | |
46900298 JB |
992 | } |
993 | ||
994 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
995 | struct ieee802_11_elems *elems, | |
996 | enum ieee80211_band band) | |
997 | { | |
998 | struct ieee80211_supported_band *sband; | |
999 | struct ieee80211_rate *bitrates; | |
1000 | size_t num_rates; | |
1001 | u32 supp_rates; | |
1002 | int i, j; | |
1003 | sband = local->hw.wiphy->bands[band]; | |
1004 | ||
1005 | if (!sband) { | |
1006 | WARN_ON(1); | |
1007 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1008 | } | |
1009 | ||
1010 | bitrates = sband->bitrates; | |
1011 | num_rates = sband->n_bitrates; | |
1012 | supp_rates = 0; | |
1013 | for (i = 0; i < elems->supp_rates_len + | |
1014 | elems->ext_supp_rates_len; i++) { | |
1015 | u8 rate = 0; | |
1016 | int own_rate; | |
1017 | if (i < elems->supp_rates_len) | |
1018 | rate = elems->supp_rates[i]; | |
1019 | else if (elems->ext_supp_rates) | |
1020 | rate = elems->ext_supp_rates | |
1021 | [i - elems->supp_rates_len]; | |
1022 | own_rate = 5 * (rate & 0x7f); | |
1023 | for (j = 0; j < num_rates; j++) | |
1024 | if (bitrates[j].bitrate == own_rate) | |
1025 | supp_rates |= BIT(j); | |
1026 | } | |
1027 | return supp_rates; | |
1028 | } | |
f2753ddb | 1029 | |
84f6a01c JB |
1030 | void ieee80211_stop_device(struct ieee80211_local *local) |
1031 | { | |
1032 | ieee80211_led_radio(local, false); | |
1033 | ||
1034 | cancel_work_sync(&local->reconfig_filter); | |
1035 | drv_stop(local); | |
1036 | ||
1037 | flush_workqueue(local->workqueue); | |
1038 | } | |
1039 | ||
f2753ddb JB |
1040 | int ieee80211_reconfig(struct ieee80211_local *local) |
1041 | { | |
1042 | struct ieee80211_hw *hw = &local->hw; | |
1043 | struct ieee80211_sub_if_data *sdata; | |
1044 | struct ieee80211_if_init_conf conf; | |
1045 | struct sta_info *sta; | |
1046 | unsigned long flags; | |
1047 | int res; | |
5bb644a0 | 1048 | |
ceb99fe0 JB |
1049 | if (local->suspended) |
1050 | local->resuming = true; | |
f2753ddb JB |
1051 | |
1052 | /* restart hardware */ | |
1053 | if (local->open_count) { | |
24feda00 LR |
1054 | /* |
1055 | * Upon resume hardware can sometimes be goofy due to | |
1056 | * various platform / driver / bus issues, so restarting | |
1057 | * the device may at times not work immediately. Propagate | |
1058 | * the error. | |
1059 | */ | |
24487981 | 1060 | res = drv_start(local); |
24feda00 LR |
1061 | if (res) { |
1062 | WARN(local->suspended, "Harware became unavailable " | |
1063 | "upon resume. This is could be a software issue" | |
1064 | "prior to suspend or a harware issue\n"); | |
1065 | return res; | |
1066 | } | |
f2753ddb | 1067 | |
1f87f7d3 | 1068 | ieee80211_led_radio(local, true); |
f2753ddb JB |
1069 | } |
1070 | ||
1071 | /* add interfaces */ | |
1072 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1073 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1074 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1075 | netif_running(sdata->dev)) { | |
1076 | conf.vif = &sdata->vif; | |
1077 | conf.type = sdata->vif.type; | |
1078 | conf.mac_addr = sdata->dev->dev_addr; | |
24487981 | 1079 | res = drv_add_interface(local, &conf); |
f2753ddb JB |
1080 | } |
1081 | } | |
1082 | ||
1083 | /* add STAs back */ | |
1084 | if (local->ops->sta_notify) { | |
1085 | spin_lock_irqsave(&local->sta_lock, flags); | |
1086 | list_for_each_entry(sta, &local->sta_list, list) { | |
5bb644a0 | 1087 | sdata = sta->sdata; |
f2753ddb JB |
1088 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1089 | sdata = container_of(sdata->bss, | |
1090 | struct ieee80211_sub_if_data, | |
1091 | u.ap); | |
1092 | ||
24487981 JB |
1093 | drv_sta_notify(local, &sdata->vif, STA_NOTIFY_ADD, |
1094 | &sta->sta); | |
f2753ddb JB |
1095 | } |
1096 | spin_unlock_irqrestore(&local->sta_lock, flags); | |
1097 | } | |
1098 | ||
1099 | /* Clear Suspend state so that ADDBA requests can be processed */ | |
1100 | ||
1101 | rcu_read_lock(); | |
1102 | ||
1103 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { | |
1104 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
1105 | clear_sta_flags(sta, WLAN_STA_SUSPEND); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | rcu_read_unlock(); | |
1110 | ||
1111 | /* setup RTS threshold */ | |
24487981 | 1112 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); |
f2753ddb JB |
1113 | |
1114 | /* reconfigure hardware */ | |
1115 | ieee80211_hw_config(local, ~0); | |
1116 | ||
f2753ddb | 1117 | ieee80211_configure_filter(local); |
f2753ddb JB |
1118 | |
1119 | /* Finally also reconfigure all the BSS information */ | |
1120 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1121 | u32 changed = ~0; | |
1122 | if (!netif_running(sdata->dev)) | |
1123 | continue; | |
1124 | switch (sdata->vif.type) { | |
1125 | case NL80211_IFTYPE_STATION: | |
1126 | /* disable beacon change bits */ | |
2d0ddec5 JB |
1127 | changed &= ~(BSS_CHANGED_BEACON | |
1128 | BSS_CHANGED_BEACON_ENABLED); | |
f2753ddb JB |
1129 | /* fall through */ |
1130 | case NL80211_IFTYPE_ADHOC: | |
1131 | case NL80211_IFTYPE_AP: | |
1132 | case NL80211_IFTYPE_MESH_POINT: | |
2d0ddec5 | 1133 | ieee80211_bss_info_change_notify(sdata, changed); |
f2753ddb JB |
1134 | break; |
1135 | case NL80211_IFTYPE_WDS: | |
1136 | break; | |
1137 | case NL80211_IFTYPE_AP_VLAN: | |
1138 | case NL80211_IFTYPE_MONITOR: | |
1139 | /* ignore virtual */ | |
1140 | break; | |
1141 | case NL80211_IFTYPE_UNSPECIFIED: | |
1142 | case __NL80211_IFTYPE_AFTER_LAST: | |
1143 | WARN_ON(1); | |
1144 | break; | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | /* add back keys */ | |
1149 | list_for_each_entry(sdata, &local->interfaces, list) | |
1150 | if (netif_running(sdata->dev)) | |
1151 | ieee80211_enable_keys(sdata); | |
1152 | ||
1153 | ieee80211_wake_queues_by_reason(hw, | |
1154 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
1155 | ||
5bb644a0 JB |
1156 | /* |
1157 | * If this is for hw restart things are still running. | |
1158 | * We may want to change that later, however. | |
1159 | */ | |
ceb99fe0 | 1160 | if (!local->suspended) |
5bb644a0 JB |
1161 | return 0; |
1162 | ||
1163 | #ifdef CONFIG_PM | |
ceb99fe0 | 1164 | /* first set suspended false, then resuming */ |
5bb644a0 | 1165 | local->suspended = false; |
ceb99fe0 JB |
1166 | mb(); |
1167 | local->resuming = false; | |
5bb644a0 JB |
1168 | |
1169 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1170 | switch(sdata->vif.type) { | |
1171 | case NL80211_IFTYPE_STATION: | |
1172 | ieee80211_sta_restart(sdata); | |
1173 | break; | |
1174 | case NL80211_IFTYPE_ADHOC: | |
1175 | ieee80211_ibss_restart(sdata); | |
1176 | break; | |
1177 | case NL80211_IFTYPE_MESH_POINT: | |
1178 | ieee80211_mesh_restart(sdata); | |
1179 | break; | |
1180 | default: | |
1181 | break; | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | add_timer(&local->sta_cleanup); | |
1186 | ||
1187 | spin_lock_irqsave(&local->sta_lock, flags); | |
1188 | list_for_each_entry(sta, &local->sta_list, list) | |
1189 | mesh_plink_restart(sta); | |
1190 | spin_unlock_irqrestore(&local->sta_lock, flags); | |
1191 | #else | |
1192 | WARN_ON(1); | |
1193 | #endif | |
f2753ddb JB |
1194 | return 0; |
1195 | } | |
42935eca | 1196 |