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" | |
2c8dccc7 | 29 | #include "rate.h" |
ee385855 | 30 | #include "mesh.h" |
c2d1560a | 31 | #include "wme.h" |
f2753ddb | 32 | #include "led.h" |
c2d1560a JB |
33 | |
34 | /* privid for wiphys to determine whether they belong to us or not */ | |
35 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; | |
36 | ||
37 | /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ | |
38 | /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ | |
c97c23e3 | 39 | const unsigned char rfc1042_header[] __aligned(2) = |
c2d1560a JB |
40 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; |
41 | ||
42 | /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ | |
c97c23e3 | 43 | const unsigned char bridge_tunnel_header[] __aligned(2) = |
c2d1560a JB |
44 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; |
45 | ||
9a95371a LR |
46 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
47 | { | |
48 | struct ieee80211_local *local; | |
49 | BUG_ON(!wiphy); | |
50 | ||
51 | local = wiphy_priv(wiphy); | |
52 | return &local->hw; | |
53 | } | |
54 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 55 | |
71364716 | 56 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
05c914fe | 57 | enum nl80211_iftype type) |
c2d1560a | 58 | { |
a494bb1c | 59 | __le16 fc = hdr->frame_control; |
c2d1560a | 60 | |
98f0b0a3 RR |
61 | /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ |
62 | if (len < 16) | |
c2d1560a JB |
63 | return NULL; |
64 | ||
a494bb1c | 65 | if (ieee80211_is_data(fc)) { |
98f0b0a3 RR |
66 | if (len < 24) /* drop incorrect hdr len (data) */ |
67 | return NULL; | |
a494bb1c HH |
68 | |
69 | if (ieee80211_has_a4(fc)) | |
c2d1560a | 70 | return NULL; |
a494bb1c HH |
71 | if (ieee80211_has_tods(fc)) |
72 | return hdr->addr1; | |
73 | if (ieee80211_has_fromds(fc)) | |
c2d1560a | 74 | return hdr->addr2; |
a494bb1c HH |
75 | |
76 | return hdr->addr3; | |
77 | } | |
78 | ||
79 | if (ieee80211_is_mgmt(fc)) { | |
98f0b0a3 RR |
80 | if (len < 24) /* drop incorrect hdr len (mgmt) */ |
81 | return NULL; | |
c2d1560a | 82 | return hdr->addr3; |
a494bb1c HH |
83 | } |
84 | ||
85 | if (ieee80211_is_ctl(fc)) { | |
86 | if(ieee80211_is_pspoll(fc)) | |
c2d1560a | 87 | return hdr->addr1; |
a494bb1c HH |
88 | |
89 | if (ieee80211_is_back_req(fc)) { | |
71364716 | 90 | switch (type) { |
05c914fe | 91 | case NL80211_IFTYPE_STATION: |
71364716 | 92 | return hdr->addr2; |
05c914fe JB |
93 | case NL80211_IFTYPE_AP: |
94 | case NL80211_IFTYPE_AP_VLAN: | |
71364716 RR |
95 | return hdr->addr1; |
96 | default: | |
a494bb1c | 97 | break; /* fall through to the return */ |
71364716 RR |
98 | } |
99 | } | |
c2d1560a JB |
100 | } |
101 | ||
102 | return NULL; | |
103 | } | |
104 | ||
6693be71 HH |
105 | unsigned int ieee80211_hdrlen(__le16 fc) |
106 | { | |
107 | unsigned int hdrlen = 24; | |
108 | ||
109 | if (ieee80211_is_data(fc)) { | |
110 | if (ieee80211_has_a4(fc)) | |
111 | hdrlen = 30; | |
112 | if (ieee80211_is_data_qos(fc)) | |
113 | hdrlen += IEEE80211_QOS_CTL_LEN; | |
114 | goto out; | |
115 | } | |
116 | ||
117 | if (ieee80211_is_ctl(fc)) { | |
118 | /* | |
119 | * ACK and CTS are 10 bytes, all others 16. To see how | |
120 | * to get this condition consider | |
121 | * subtype mask: 0b0000000011110000 (0x00F0) | |
122 | * ACK subtype: 0b0000000011010000 (0x00D0) | |
123 | * CTS subtype: 0b0000000011000000 (0x00C0) | |
124 | * bits that matter: ^^^ (0x00E0) | |
125 | * value of those: 0b0000000011000000 (0x00C0) | |
126 | */ | |
127 | if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0)) | |
128 | hdrlen = 10; | |
129 | else | |
130 | hdrlen = 16; | |
131 | } | |
132 | out: | |
133 | return hdrlen; | |
134 | } | |
135 | EXPORT_SYMBOL(ieee80211_hdrlen); | |
136 | ||
c9c6950c | 137 | unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) |
c2d1560a | 138 | { |
c9c6950c HH |
139 | const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *)skb->data; |
140 | unsigned int hdrlen; | |
c2d1560a JB |
141 | |
142 | if (unlikely(skb->len < 10)) | |
143 | return 0; | |
c9c6950c | 144 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
c2d1560a JB |
145 | if (unlikely(hdrlen > skb->len)) |
146 | return 0; | |
147 | return hdrlen; | |
148 | } | |
149 | EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); | |
150 | ||
ee385855 LCC |
151 | int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr) |
152 | { | |
153 | int ae = meshhdr->flags & IEEE80211S_FLAGS_AE; | |
154 | /* 7.1.3.5a.2 */ | |
155 | switch (ae) { | |
156 | case 0: | |
ef269254 | 157 | return 6; |
ee385855 | 158 | case 1: |
ef269254 | 159 | return 12; |
ee385855 | 160 | case 2: |
ef269254 | 161 | return 18; |
ee385855 | 162 | case 3: |
ef269254 | 163 | return 24; |
ee385855 | 164 | default: |
ef269254 | 165 | return 6; |
ee385855 LCC |
166 | } |
167 | } | |
ee385855 | 168 | |
5cf121c3 | 169 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 170 | { |
2de8e0d9 JB |
171 | struct sk_buff *skb = tx->skb; |
172 | struct ieee80211_hdr *hdr; | |
173 | ||
174 | do { | |
175 | hdr = (struct ieee80211_hdr *) skb->data; | |
176 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
177 | } while ((skb = skb->next)); | |
c2d1560a JB |
178 | } |
179 | ||
180 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, | |
181 | int rate, int erp, int short_preamble) | |
182 | { | |
183 | int dur; | |
184 | ||
185 | /* calculate duration (in microseconds, rounded up to next higher | |
186 | * integer if it includes a fractional microsecond) to send frame of | |
187 | * len bytes (does not include FCS) at the given rate. Duration will | |
188 | * also include SIFS. | |
189 | * | |
190 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
191 | * DIV_ROUND_UP() operations. | |
192 | */ | |
193 | ||
8318d78a | 194 | if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
195 | /* |
196 | * OFDM: | |
197 | * | |
198 | * N_DBPS = DATARATE x 4 | |
199 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
200 | * (16 = SIGNAL time, 6 = tail bits) | |
201 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
202 | * | |
203 | * T_SYM = 4 usec | |
204 | * 802.11a - 17.5.2: aSIFSTime = 16 usec | |
205 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + | |
206 | * signal ext = 6 usec | |
207 | */ | |
c2d1560a JB |
208 | dur = 16; /* SIFS + signal ext */ |
209 | dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */ | |
210 | dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */ | |
211 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
212 | 4 * rate); /* T_SYM x N_SYM */ | |
213 | } else { | |
214 | /* | |
215 | * 802.11b or 802.11g with 802.11b compatibility: | |
216 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
217 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
218 | * | |
219 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
220 | * aSIFSTime = 10 usec | |
221 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
222 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
223 | */ | |
224 | dur = 10; /* aSIFSTime = 10 usec */ | |
225 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
226 | ||
227 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
228 | } | |
229 | ||
230 | return dur; | |
231 | } | |
232 | ||
233 | /* Exported duration function for driver use */ | |
32bfd35d JB |
234 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
235 | struct ieee80211_vif *vif, | |
8318d78a JB |
236 | size_t frame_len, |
237 | struct ieee80211_rate *rate) | |
c2d1560a JB |
238 | { |
239 | struct ieee80211_local *local = hw_to_local(hw); | |
25d834e1 | 240 | struct ieee80211_sub_if_data *sdata; |
c2d1560a JB |
241 | u16 dur; |
242 | int erp; | |
25d834e1 | 243 | bool short_preamble = false; |
c2d1560a | 244 | |
8318d78a | 245 | erp = 0; |
25d834e1 JB |
246 | if (vif) { |
247 | sdata = vif_to_sdata(vif); | |
bda3933a | 248 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
249 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
250 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
251 | } | |
8318d78a JB |
252 | |
253 | dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp, | |
25d834e1 | 254 | short_preamble); |
c2d1560a JB |
255 | |
256 | return cpu_to_le16(dur); | |
257 | } | |
258 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
259 | ||
32bfd35d JB |
260 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
261 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 262 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
263 | { |
264 | struct ieee80211_local *local = hw_to_local(hw); | |
265 | struct ieee80211_rate *rate; | |
25d834e1 | 266 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 267 | bool short_preamble; |
c2d1560a JB |
268 | int erp; |
269 | u16 dur; | |
2e92e6f2 JB |
270 | struct ieee80211_supported_band *sband; |
271 | ||
272 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
c2d1560a | 273 | |
25d834e1 | 274 | short_preamble = false; |
7e9ed188 | 275 | |
e039fa4a | 276 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
277 | |
278 | erp = 0; | |
25d834e1 JB |
279 | if (vif) { |
280 | sdata = vif_to_sdata(vif); | |
bda3933a | 281 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
282 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
283 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
284 | } | |
c2d1560a JB |
285 | |
286 | /* CTS duration */ | |
8318d78a | 287 | dur = ieee80211_frame_duration(local, 10, rate->bitrate, |
c2d1560a JB |
288 | erp, short_preamble); |
289 | /* Data frame duration */ | |
8318d78a | 290 | dur += ieee80211_frame_duration(local, frame_len, rate->bitrate, |
c2d1560a JB |
291 | erp, short_preamble); |
292 | /* ACK duration */ | |
8318d78a | 293 | dur += ieee80211_frame_duration(local, 10, rate->bitrate, |
c2d1560a JB |
294 | erp, short_preamble); |
295 | ||
296 | return cpu_to_le16(dur); | |
297 | } | |
298 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
299 | ||
32bfd35d JB |
300 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
301 | struct ieee80211_vif *vif, | |
c2d1560a | 302 | size_t frame_len, |
e039fa4a | 303 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
304 | { |
305 | struct ieee80211_local *local = hw_to_local(hw); | |
306 | struct ieee80211_rate *rate; | |
25d834e1 | 307 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 308 | bool short_preamble; |
c2d1560a JB |
309 | int erp; |
310 | u16 dur; | |
2e92e6f2 JB |
311 | struct ieee80211_supported_band *sband; |
312 | ||
313 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
c2d1560a | 314 | |
25d834e1 | 315 | short_preamble = false; |
7e9ed188 | 316 | |
e039fa4a | 317 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 318 | erp = 0; |
25d834e1 JB |
319 | if (vif) { |
320 | sdata = vif_to_sdata(vif); | |
bda3933a | 321 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
322 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
323 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
324 | } | |
c2d1560a JB |
325 | |
326 | /* Data frame duration */ | |
8318d78a | 327 | dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, |
c2d1560a | 328 | erp, short_preamble); |
e039fa4a | 329 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 330 | /* ACK duration */ |
8318d78a | 331 | dur += ieee80211_frame_duration(local, 10, rate->bitrate, |
c2d1560a JB |
332 | erp, short_preamble); |
333 | } | |
334 | ||
335 | return cpu_to_le16(dur); | |
336 | } | |
337 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
338 | ||
ce7c9111 KV |
339 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
340 | enum queue_stop_reason reason) | |
c2d1560a JB |
341 | { |
342 | struct ieee80211_local *local = hw_to_local(hw); | |
343 | ||
e4e72fb4 JB |
344 | if (WARN_ON(queue >= hw->queues)) |
345 | return; | |
ce7c9111 | 346 | |
96f5e66e JB |
347 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
348 | ||
2a577d98 JB |
349 | if (!skb_queue_empty(&local->pending[queue]) && |
350 | local->queue_stop_reasons[queue] == | |
351 | BIT(IEEE80211_QUEUE_STOP_REASON_PENDING)) | |
352 | tasklet_schedule(&local->tx_pending_tasklet); | |
353 | ||
96f5e66e JB |
354 | if (local->queue_stop_reasons[queue] != 0) |
355 | /* someone still has this queue stopped */ | |
356 | return; | |
357 | ||
2a577d98 | 358 | netif_wake_subqueue(local->mdev, queue); |
c2d1560a | 359 | } |
ce7c9111 | 360 | |
96f5e66e JB |
361 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
362 | enum queue_stop_reason reason) | |
ce7c9111 KV |
363 | { |
364 | struct ieee80211_local *local = hw_to_local(hw); | |
365 | unsigned long flags; | |
366 | ||
367 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
368 | __ieee80211_wake_queue(hw, queue, reason); | |
369 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
370 | } | |
371 | ||
372 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
373 | { | |
374 | ieee80211_wake_queue_by_reason(hw, queue, | |
375 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
376 | } | |
c2d1560a JB |
377 | EXPORT_SYMBOL(ieee80211_wake_queue); |
378 | ||
ce7c9111 KV |
379 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
380 | enum queue_stop_reason reason) | |
c2d1560a JB |
381 | { |
382 | struct ieee80211_local *local = hw_to_local(hw); | |
383 | ||
e4e72fb4 JB |
384 | if (WARN_ON(queue >= hw->queues)) |
385 | return; | |
96f5e66e | 386 | |
2a577d98 JB |
387 | /* |
388 | * Only stop if it was previously running, this is necessary | |
389 | * for correct pending packets handling because there we may | |
390 | * start (but not wake) the queue and rely on that. | |
391 | */ | |
392 | if (!local->queue_stop_reasons[queue]) | |
393 | netif_stop_subqueue(local->mdev, queue); | |
ce7c9111 | 394 | |
2a577d98 | 395 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
c2d1560a | 396 | } |
ce7c9111 | 397 | |
96f5e66e JB |
398 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
399 | enum queue_stop_reason reason) | |
ce7c9111 KV |
400 | { |
401 | struct ieee80211_local *local = hw_to_local(hw); | |
402 | unsigned long flags; | |
403 | ||
404 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
405 | __ieee80211_stop_queue(hw, queue, reason); | |
406 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
407 | } | |
408 | ||
409 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
410 | { | |
411 | ieee80211_stop_queue_by_reason(hw, queue, | |
412 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
413 | } | |
c2d1560a JB |
414 | EXPORT_SYMBOL(ieee80211_stop_queue); |
415 | ||
ce7c9111 KV |
416 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
417 | enum queue_stop_reason reason) | |
c2d1560a | 418 | { |
ce7c9111 KV |
419 | struct ieee80211_local *local = hw_to_local(hw); |
420 | unsigned long flags; | |
c2d1560a JB |
421 | int i; |
422 | ||
ce7c9111 KV |
423 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
424 | ||
96f5e66e | 425 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
426 | __ieee80211_stop_queue(hw, i, reason); |
427 | ||
428 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
429 | } | |
430 | ||
431 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
432 | { | |
433 | ieee80211_stop_queues_by_reason(hw, | |
434 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
435 | } |
436 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
437 | ||
92ab8535 TW |
438 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
439 | { | |
440 | struct ieee80211_local *local = hw_to_local(hw); | |
96f5e66e | 441 | |
e4e72fb4 JB |
442 | if (WARN_ON(queue >= hw->queues)) |
443 | return true; | |
96f5e66e | 444 | |
92ab8535 TW |
445 | return __netif_subqueue_stopped(local->mdev, queue); |
446 | } | |
447 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
448 | ||
ce7c9111 KV |
449 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
450 | enum queue_stop_reason reason) | |
c2d1560a | 451 | { |
ce7c9111 KV |
452 | struct ieee80211_local *local = hw_to_local(hw); |
453 | unsigned long flags; | |
c2d1560a JB |
454 | int i; |
455 | ||
ce7c9111 KV |
456 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
457 | ||
e4e72fb4 | 458 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
459 | __ieee80211_wake_queue(hw, i, reason); |
460 | ||
461 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
462 | } | |
463 | ||
464 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
465 | { | |
466 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
467 | } |
468 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 469 | |
32bfd35d JB |
470 | void ieee80211_iterate_active_interfaces( |
471 | struct ieee80211_hw *hw, | |
472 | void (*iterator)(void *data, u8 *mac, | |
473 | struct ieee80211_vif *vif), | |
474 | void *data) | |
dabeb344 JB |
475 | { |
476 | struct ieee80211_local *local = hw_to_local(hw); | |
477 | struct ieee80211_sub_if_data *sdata; | |
478 | ||
c771c9d8 | 479 | mutex_lock(&local->iflist_mtx); |
2f561feb ID |
480 | |
481 | list_for_each_entry(sdata, &local->interfaces, list) { | |
482 | switch (sdata->vif.type) { | |
05c914fe JB |
483 | case __NL80211_IFTYPE_AFTER_LAST: |
484 | case NL80211_IFTYPE_UNSPECIFIED: | |
485 | case NL80211_IFTYPE_MONITOR: | |
486 | case NL80211_IFTYPE_AP_VLAN: | |
2f561feb | 487 | continue; |
05c914fe JB |
488 | case NL80211_IFTYPE_AP: |
489 | case NL80211_IFTYPE_STATION: | |
490 | case NL80211_IFTYPE_ADHOC: | |
491 | case NL80211_IFTYPE_WDS: | |
492 | case NL80211_IFTYPE_MESH_POINT: | |
2f561feb ID |
493 | break; |
494 | } | |
2f561feb ID |
495 | if (netif_running(sdata->dev)) |
496 | iterator(data, sdata->dev->dev_addr, | |
497 | &sdata->vif); | |
498 | } | |
499 | ||
c771c9d8 | 500 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
501 | } |
502 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
503 | ||
504 | void ieee80211_iterate_active_interfaces_atomic( | |
505 | struct ieee80211_hw *hw, | |
506 | void (*iterator)(void *data, u8 *mac, | |
507 | struct ieee80211_vif *vif), | |
508 | void *data) | |
509 | { | |
510 | struct ieee80211_local *local = hw_to_local(hw); | |
511 | struct ieee80211_sub_if_data *sdata; | |
512 | ||
e38bad47 | 513 | rcu_read_lock(); |
dabeb344 | 514 | |
e38bad47 | 515 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 516 | switch (sdata->vif.type) { |
05c914fe JB |
517 | case __NL80211_IFTYPE_AFTER_LAST: |
518 | case NL80211_IFTYPE_UNSPECIFIED: | |
519 | case NL80211_IFTYPE_MONITOR: | |
520 | case NL80211_IFTYPE_AP_VLAN: | |
dabeb344 | 521 | continue; |
05c914fe JB |
522 | case NL80211_IFTYPE_AP: |
523 | case NL80211_IFTYPE_STATION: | |
524 | case NL80211_IFTYPE_ADHOC: | |
525 | case NL80211_IFTYPE_WDS: | |
526 | case NL80211_IFTYPE_MESH_POINT: | |
dabeb344 JB |
527 | break; |
528 | } | |
dabeb344 JB |
529 | if (netif_running(sdata->dev)) |
530 | iterator(data, sdata->dev->dev_addr, | |
32bfd35d | 531 | &sdata->vif); |
dabeb344 | 532 | } |
e38bad47 JB |
533 | |
534 | rcu_read_unlock(); | |
dabeb344 | 535 | } |
2f561feb | 536 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
37ffc8da JB |
537 | |
538 | void ieee802_11_parse_elems(u8 *start, size_t len, | |
539 | struct ieee802_11_elems *elems) | |
d91f36db JB |
540 | { |
541 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); | |
542 | } | |
543 | ||
544 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, | |
545 | struct ieee802_11_elems *elems, | |
546 | u64 filter, u32 crc) | |
37ffc8da JB |
547 | { |
548 | size_t left = len; | |
549 | u8 *pos = start; | |
d91f36db | 550 | bool calc_crc = filter != 0; |
37ffc8da JB |
551 | |
552 | memset(elems, 0, sizeof(*elems)); | |
553 | elems->ie_start = start; | |
554 | elems->total_len = len; | |
555 | ||
556 | while (left >= 2) { | |
557 | u8 id, elen; | |
558 | ||
559 | id = *pos++; | |
560 | elen = *pos++; | |
561 | left -= 2; | |
562 | ||
563 | if (elen > left) | |
d91f36db JB |
564 | break; |
565 | ||
566 | if (calc_crc && id < 64 && (filter & BIT(id))) | |
567 | crc = crc32_be(crc, pos - 2, elen + 2); | |
37ffc8da JB |
568 | |
569 | switch (id) { | |
570 | case WLAN_EID_SSID: | |
571 | elems->ssid = pos; | |
572 | elems->ssid_len = elen; | |
573 | break; | |
574 | case WLAN_EID_SUPP_RATES: | |
575 | elems->supp_rates = pos; | |
576 | elems->supp_rates_len = elen; | |
577 | break; | |
578 | case WLAN_EID_FH_PARAMS: | |
579 | elems->fh_params = pos; | |
580 | elems->fh_params_len = elen; | |
581 | break; | |
582 | case WLAN_EID_DS_PARAMS: | |
583 | elems->ds_params = pos; | |
584 | elems->ds_params_len = elen; | |
585 | break; | |
586 | case WLAN_EID_CF_PARAMS: | |
587 | elems->cf_params = pos; | |
588 | elems->cf_params_len = elen; | |
589 | break; | |
590 | case WLAN_EID_TIM: | |
e7ec86f5 JB |
591 | if (elen >= sizeof(struct ieee80211_tim_ie)) { |
592 | elems->tim = (void *)pos; | |
593 | elems->tim_len = elen; | |
594 | } | |
37ffc8da JB |
595 | break; |
596 | case WLAN_EID_IBSS_PARAMS: | |
597 | elems->ibss_params = pos; | |
598 | elems->ibss_params_len = elen; | |
599 | break; | |
600 | case WLAN_EID_CHALLENGE: | |
601 | elems->challenge = pos; | |
602 | elems->challenge_len = elen; | |
603 | break; | |
d91f36db | 604 | case WLAN_EID_VENDOR_SPECIFIC: |
37ffc8da JB |
605 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
606 | pos[2] == 0xf2) { | |
607 | /* Microsoft OUI (00:50:F2) */ | |
d91f36db JB |
608 | |
609 | if (calc_crc) | |
610 | crc = crc32_be(crc, pos - 2, elen + 2); | |
611 | ||
37ffc8da JB |
612 | if (pos[3] == 1) { |
613 | /* OUI Type 1 - WPA IE */ | |
614 | elems->wpa = pos; | |
615 | elems->wpa_len = elen; | |
616 | } else if (elen >= 5 && pos[3] == 2) { | |
d91f36db | 617 | /* OUI Type 2 - WMM IE */ |
37ffc8da JB |
618 | if (pos[4] == 0) { |
619 | elems->wmm_info = pos; | |
620 | elems->wmm_info_len = elen; | |
621 | } else if (pos[4] == 1) { | |
622 | elems->wmm_param = pos; | |
623 | elems->wmm_param_len = elen; | |
624 | } | |
625 | } | |
626 | } | |
627 | break; | |
628 | case WLAN_EID_RSN: | |
629 | elems->rsn = pos; | |
630 | elems->rsn_len = elen; | |
631 | break; | |
632 | case WLAN_EID_ERP_INFO: | |
633 | elems->erp_info = pos; | |
634 | elems->erp_info_len = elen; | |
635 | break; | |
636 | case WLAN_EID_EXT_SUPP_RATES: | |
637 | elems->ext_supp_rates = pos; | |
638 | elems->ext_supp_rates_len = elen; | |
639 | break; | |
640 | case WLAN_EID_HT_CAPABILITY: | |
09914813 JB |
641 | if (elen >= sizeof(struct ieee80211_ht_cap)) |
642 | elems->ht_cap_elem = (void *)pos; | |
37ffc8da | 643 | break; |
d9fe60de JB |
644 | case WLAN_EID_HT_INFORMATION: |
645 | if (elen >= sizeof(struct ieee80211_ht_info)) | |
09914813 | 646 | elems->ht_info_elem = (void *)pos; |
37ffc8da JB |
647 | break; |
648 | case WLAN_EID_MESH_ID: | |
649 | elems->mesh_id = pos; | |
650 | elems->mesh_id_len = elen; | |
651 | break; | |
652 | case WLAN_EID_MESH_CONFIG: | |
653 | elems->mesh_config = pos; | |
654 | elems->mesh_config_len = elen; | |
655 | break; | |
656 | case WLAN_EID_PEER_LINK: | |
657 | elems->peer_link = pos; | |
658 | elems->peer_link_len = elen; | |
659 | break; | |
660 | case WLAN_EID_PREQ: | |
661 | elems->preq = pos; | |
662 | elems->preq_len = elen; | |
663 | break; | |
664 | case WLAN_EID_PREP: | |
665 | elems->prep = pos; | |
666 | elems->prep_len = elen; | |
667 | break; | |
668 | case WLAN_EID_PERR: | |
669 | elems->perr = pos; | |
670 | elems->perr_len = elen; | |
671 | break; | |
672 | case WLAN_EID_CHANNEL_SWITCH: | |
673 | elems->ch_switch_elem = pos; | |
674 | elems->ch_switch_elem_len = elen; | |
675 | break; | |
676 | case WLAN_EID_QUIET: | |
677 | if (!elems->quiet_elem) { | |
678 | elems->quiet_elem = pos; | |
679 | elems->quiet_elem_len = elen; | |
680 | } | |
681 | elems->num_of_quiet_elem++; | |
682 | break; | |
683 | case WLAN_EID_COUNTRY: | |
684 | elems->country_elem = pos; | |
685 | elems->country_elem_len = elen; | |
686 | break; | |
687 | case WLAN_EID_PWR_CONSTRAINT: | |
688 | elems->pwr_constr_elem = pos; | |
689 | elems->pwr_constr_elem_len = elen; | |
690 | break; | |
f797eb7e JM |
691 | case WLAN_EID_TIMEOUT_INTERVAL: |
692 | elems->timeout_int = pos; | |
693 | elems->timeout_int_len = elen; | |
63a5ab82 | 694 | break; |
37ffc8da JB |
695 | default: |
696 | break; | |
697 | } | |
698 | ||
699 | left -= elen; | |
700 | pos += elen; | |
701 | } | |
d91f36db JB |
702 | |
703 | return crc; | |
37ffc8da | 704 | } |
5825fe10 JB |
705 | |
706 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) | |
707 | { | |
708 | struct ieee80211_local *local = sdata->local; | |
709 | struct ieee80211_tx_queue_params qparam; | |
710 | int i; | |
711 | ||
712 | if (!local->ops->conf_tx) | |
713 | return; | |
714 | ||
715 | memset(&qparam, 0, sizeof(qparam)); | |
716 | ||
717 | qparam.aifs = 2; | |
718 | ||
719 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
720 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) | |
721 | qparam.cw_min = 31; | |
722 | else | |
723 | qparam.cw_min = 15; | |
724 | ||
725 | qparam.cw_max = 1023; | |
726 | qparam.txop = 0; | |
727 | ||
728 | for (i = 0; i < local_to_hw(local)->queues; i++) | |
729 | local->ops->conf_tx(local_to_hw(local), i, &qparam); | |
730 | } | |
e50db65c | 731 | |
46900298 JB |
732 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
733 | const size_t supp_rates_len, | |
734 | const u8 *supp_rates) | |
735 | { | |
736 | struct ieee80211_local *local = sdata->local; | |
737 | int i, have_higher_than_11mbit = 0; | |
738 | ||
739 | /* cf. IEEE 802.11 9.2.12 */ | |
740 | for (i = 0; i < supp_rates_len; i++) | |
741 | if ((supp_rates[i] & 0x7f) * 5 > 110) | |
742 | have_higher_than_11mbit = 1; | |
743 | ||
744 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
745 | have_higher_than_11mbit) | |
746 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
747 | else | |
748 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
749 | ||
750 | ieee80211_set_wmm_default(sdata); | |
751 | } | |
752 | ||
e50db65c JB |
753 | void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
754 | int encrypt) | |
755 | { | |
756 | skb->dev = sdata->local->mdev; | |
757 | skb_set_mac_header(skb, 0); | |
758 | skb_set_network_header(skb, 0); | |
759 | skb_set_transport_header(skb, 0); | |
760 | ||
761 | skb->iif = sdata->dev->ifindex; | |
762 | skb->do_not_encrypt = !encrypt; | |
763 | ||
764 | dev_queue_xmit(skb); | |
765 | } | |
e16751c3 JB |
766 | |
767 | int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz) | |
768 | { | |
769 | int ret = -EINVAL; | |
770 | struct ieee80211_channel *chan; | |
771 | struct ieee80211_local *local = sdata->local; | |
772 | ||
773 | chan = ieee80211_get_channel(local->hw.wiphy, freqMHz); | |
774 | ||
775 | if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { | |
05c914fe | 776 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && |
d73782fd | 777 | chan->flags & IEEE80211_CHAN_NO_IBSS) |
e16751c3 | 778 | return ret; |
e16751c3 | 779 | local->oper_channel = chan; |
094d05dc | 780 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
e16751c3 | 781 | |
c2b13452 | 782 | if (local->sw_scanning || local->hw_scanning) |
e16751c3 JB |
783 | ret = 0; |
784 | else | |
e8975581 JB |
785 | ret = ieee80211_hw_config( |
786 | local, IEEE80211_CONF_CHANGE_CHANNEL); | |
e16751c3 JB |
787 | } |
788 | ||
789 | return ret; | |
790 | } | |
96dd22ac | 791 | |
881d948c | 792 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
96dd22ac JB |
793 | enum ieee80211_band band) |
794 | { | |
795 | struct ieee80211_supported_band *sband; | |
796 | struct ieee80211_rate *bitrates; | |
881d948c | 797 | u32 mandatory_rates; |
96dd22ac JB |
798 | enum ieee80211_rate_flags mandatory_flag; |
799 | int i; | |
800 | ||
801 | sband = local->hw.wiphy->bands[band]; | |
802 | if (!sband) { | |
803 | WARN_ON(1); | |
804 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
805 | } | |
806 | ||
807 | if (band == IEEE80211_BAND_2GHZ) | |
808 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
809 | else | |
810 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
811 | ||
812 | bitrates = sband->bitrates; | |
813 | mandatory_rates = 0; | |
814 | for (i = 0; i < sband->n_bitrates; i++) | |
815 | if (bitrates[i].flags & mandatory_flag) | |
816 | mandatory_rates |= BIT(i); | |
817 | return mandatory_rates; | |
818 | } | |
46900298 JB |
819 | |
820 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
821 | u16 transaction, u16 auth_alg, | |
822 | u8 *extra, size_t extra_len, | |
823 | const u8 *bssid, int encrypt) | |
824 | { | |
825 | struct ieee80211_local *local = sdata->local; | |
826 | struct sk_buff *skb; | |
827 | struct ieee80211_mgmt *mgmt; | |
46900298 JB |
828 | |
829 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
65fc73ac | 830 | sizeof(*mgmt) + 6 + extra_len); |
46900298 JB |
831 | if (!skb) { |
832 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
833 | "frame\n", sdata->dev->name); | |
834 | return; | |
835 | } | |
836 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
837 | ||
838 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
839 | memset(mgmt, 0, 24 + 6); | |
840 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
841 | IEEE80211_STYPE_AUTH); | |
842 | if (encrypt) | |
843 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
844 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
845 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
846 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
847 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
848 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
849 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
850 | if (extra) | |
851 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 JB |
852 | |
853 | ieee80211_tx_skb(sdata, skb, encrypt); | |
854 | } | |
855 | ||
de95a54b JB |
856 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
857 | const u8 *ie, size_t ie_len) | |
858 | { | |
859 | struct ieee80211_supported_band *sband; | |
860 | u8 *pos, *supp_rates_len, *esupp_rates_len = NULL; | |
861 | int i; | |
862 | ||
863 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
864 | ||
865 | pos = buffer; | |
866 | ||
867 | *pos++ = WLAN_EID_SUPP_RATES; | |
868 | supp_rates_len = pos; | |
869 | *pos++ = 0; | |
870 | ||
871 | for (i = 0; i < sband->n_bitrates; i++) { | |
872 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
873 | ||
874 | if (esupp_rates_len) { | |
875 | *esupp_rates_len += 1; | |
876 | } else if (*supp_rates_len == 8) { | |
877 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
878 | esupp_rates_len = pos; | |
879 | *pos++ = 1; | |
880 | } else | |
881 | *supp_rates_len += 1; | |
882 | ||
883 | *pos++ = rate->bitrate / 5; | |
884 | } | |
885 | ||
5ef2d41a JB |
886 | if (sband->ht_cap.ht_supported) { |
887 | __le16 tmp = cpu_to_le16(sband->ht_cap.cap); | |
888 | ||
889 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
890 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
891 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
892 | memcpy(pos, &tmp, sizeof(u16)); | |
893 | pos += sizeof(u16); | |
894 | /* TODO: needs a define here for << 2 */ | |
895 | *pos++ = sband->ht_cap.ampdu_factor | | |
896 | (sband->ht_cap.ampdu_density << 2); | |
897 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); | |
898 | pos += sizeof(sband->ht_cap.mcs); | |
899 | pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ | |
900 | } | |
901 | ||
de95a54b JB |
902 | /* |
903 | * If adding more here, adjust code in main.c | |
904 | * that calculates local->scan_ies_len. | |
905 | */ | |
906 | ||
907 | if (ie) { | |
908 | memcpy(pos, ie, ie_len); | |
909 | pos += ie_len; | |
910 | } | |
911 | ||
912 | return pos - buffer; | |
913 | } | |
914 | ||
46900298 | 915 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
de95a54b JB |
916 | const u8 *ssid, size_t ssid_len, |
917 | const u8 *ie, size_t ie_len) | |
46900298 JB |
918 | { |
919 | struct ieee80211_local *local = sdata->local; | |
46900298 JB |
920 | struct sk_buff *skb; |
921 | struct ieee80211_mgmt *mgmt; | |
de95a54b | 922 | u8 *pos; |
46900298 JB |
923 | |
924 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + | |
65fc73ac | 925 | ie_len); |
46900298 JB |
926 | if (!skb) { |
927 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
928 | "request\n", sdata->dev->name); | |
929 | return; | |
930 | } | |
931 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
932 | ||
933 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
934 | memset(mgmt, 0, 24); | |
935 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
936 | IEEE80211_STYPE_PROBE_REQ); | |
937 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
938 | if (dst) { | |
939 | memcpy(mgmt->da, dst, ETH_ALEN); | |
940 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
941 | } else { | |
942 | memset(mgmt->da, 0xff, ETH_ALEN); | |
943 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
944 | } | |
945 | pos = skb_put(skb, 2 + ssid_len); | |
946 | *pos++ = WLAN_EID_SSID; | |
947 | *pos++ = ssid_len; | |
948 | memcpy(pos, ssid, ssid_len); | |
de95a54b | 949 | pos += ssid_len; |
46900298 | 950 | |
de95a54b | 951 | skb_put(skb, ieee80211_build_preq_ies(local, pos, ie, ie_len)); |
46900298 JB |
952 | |
953 | ieee80211_tx_skb(sdata, skb, 0); | |
954 | } | |
955 | ||
956 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
957 | struct ieee802_11_elems *elems, | |
958 | enum ieee80211_band band) | |
959 | { | |
960 | struct ieee80211_supported_band *sband; | |
961 | struct ieee80211_rate *bitrates; | |
962 | size_t num_rates; | |
963 | u32 supp_rates; | |
964 | int i, j; | |
965 | sband = local->hw.wiphy->bands[band]; | |
966 | ||
967 | if (!sband) { | |
968 | WARN_ON(1); | |
969 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
970 | } | |
971 | ||
972 | bitrates = sband->bitrates; | |
973 | num_rates = sband->n_bitrates; | |
974 | supp_rates = 0; | |
975 | for (i = 0; i < elems->supp_rates_len + | |
976 | elems->ext_supp_rates_len; i++) { | |
977 | u8 rate = 0; | |
978 | int own_rate; | |
979 | if (i < elems->supp_rates_len) | |
980 | rate = elems->supp_rates[i]; | |
981 | else if (elems->ext_supp_rates) | |
982 | rate = elems->ext_supp_rates | |
983 | [i - elems->supp_rates_len]; | |
984 | own_rate = 5 * (rate & 0x7f); | |
985 | for (j = 0; j < num_rates; j++) | |
986 | if (bitrates[j].bitrate == own_rate) | |
987 | supp_rates |= BIT(j); | |
988 | } | |
989 | return supp_rates; | |
990 | } | |
f2753ddb JB |
991 | |
992 | int ieee80211_reconfig(struct ieee80211_local *local) | |
993 | { | |
994 | struct ieee80211_hw *hw = &local->hw; | |
995 | struct ieee80211_sub_if_data *sdata; | |
996 | struct ieee80211_if_init_conf conf; | |
997 | struct sta_info *sta; | |
998 | unsigned long flags; | |
999 | int res; | |
1000 | ||
1001 | /* restart hardware */ | |
1002 | if (local->open_count) { | |
1003 | res = local->ops->start(hw); | |
1004 | ||
1005 | ieee80211_led_radio(local, hw->conf.radio_enabled); | |
1006 | } | |
1007 | ||
1008 | /* add interfaces */ | |
1009 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1010 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1011 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1012 | netif_running(sdata->dev)) { | |
1013 | conf.vif = &sdata->vif; | |
1014 | conf.type = sdata->vif.type; | |
1015 | conf.mac_addr = sdata->dev->dev_addr; | |
1016 | res = local->ops->add_interface(hw, &conf); | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | /* add STAs back */ | |
1021 | if (local->ops->sta_notify) { | |
1022 | spin_lock_irqsave(&local->sta_lock, flags); | |
1023 | list_for_each_entry(sta, &local->sta_list, list) { | |
1024 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
1025 | sdata = container_of(sdata->bss, | |
1026 | struct ieee80211_sub_if_data, | |
1027 | u.ap); | |
1028 | ||
1029 | local->ops->sta_notify(hw, &sdata->vif, | |
1030 | STA_NOTIFY_ADD, &sta->sta); | |
1031 | } | |
1032 | spin_unlock_irqrestore(&local->sta_lock, flags); | |
1033 | } | |
1034 | ||
1035 | /* Clear Suspend state so that ADDBA requests can be processed */ | |
1036 | ||
1037 | rcu_read_lock(); | |
1038 | ||
1039 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { | |
1040 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
1041 | clear_sta_flags(sta, WLAN_STA_SUSPEND); | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | rcu_read_unlock(); | |
1046 | ||
1047 | /* setup RTS threshold */ | |
1048 | if (local->ops->set_rts_threshold) | |
b9a5f8ca | 1049 | local->ops->set_rts_threshold(hw, hw->wiphy->rts_threshold); |
f2753ddb JB |
1050 | |
1051 | /* reconfigure hardware */ | |
1052 | ieee80211_hw_config(local, ~0); | |
1053 | ||
1054 | netif_addr_lock_bh(local->mdev); | |
1055 | ieee80211_configure_filter(local); | |
1056 | netif_addr_unlock_bh(local->mdev); | |
1057 | ||
1058 | /* Finally also reconfigure all the BSS information */ | |
1059 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1060 | u32 changed = ~0; | |
1061 | if (!netif_running(sdata->dev)) | |
1062 | continue; | |
1063 | switch (sdata->vif.type) { | |
1064 | case NL80211_IFTYPE_STATION: | |
1065 | /* disable beacon change bits */ | |
1066 | changed &= ~IEEE80211_IFCC_BEACON; | |
1067 | /* fall through */ | |
1068 | case NL80211_IFTYPE_ADHOC: | |
1069 | case NL80211_IFTYPE_AP: | |
1070 | case NL80211_IFTYPE_MESH_POINT: | |
1071 | /* | |
1072 | * Driver's config_interface can fail if rfkill is | |
1073 | * enabled. Accommodate this return code. | |
1074 | * FIXME: When mac80211 has knowledge of rfkill | |
1075 | * state the code below can change back to: | |
1076 | * WARN(ieee80211_if_config(sdata, changed)); | |
1077 | * ieee80211_bss_info_change_notify(sdata, ~0); | |
1078 | */ | |
1079 | if (ieee80211_if_config(sdata, changed)) | |
1080 | printk(KERN_DEBUG "%s: failed to configure interface during resume\n", | |
1081 | sdata->dev->name); | |
1082 | else | |
1083 | ieee80211_bss_info_change_notify(sdata, ~0); | |
1084 | break; | |
1085 | case NL80211_IFTYPE_WDS: | |
1086 | break; | |
1087 | case NL80211_IFTYPE_AP_VLAN: | |
1088 | case NL80211_IFTYPE_MONITOR: | |
1089 | /* ignore virtual */ | |
1090 | break; | |
1091 | case NL80211_IFTYPE_UNSPECIFIED: | |
1092 | case __NL80211_IFTYPE_AFTER_LAST: | |
1093 | WARN_ON(1); | |
1094 | break; | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | /* add back keys */ | |
1099 | list_for_each_entry(sdata, &local->interfaces, list) | |
1100 | if (netif_running(sdata->dev)) | |
1101 | ieee80211_enable_keys(sdata); | |
1102 | ||
1103 | ieee80211_wake_queues_by_reason(hw, | |
1104 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
1105 | ||
1106 | return 0; | |
1107 | } |