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> | |
bc3b2d7f | 16 | #include <linux/export.h> |
c2d1560a JB |
17 | #include <linux/types.h> |
18 | #include <linux/slab.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/if_arp.h> | |
c2d1560a | 22 | #include <linux/bitmap.h> |
dd76986b | 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 | { |
252b86c4 | 100 | struct sk_buff *skb; |
2de8e0d9 JB |
101 | struct ieee80211_hdr *hdr; |
102 | ||
252b86c4 | 103 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
104 | hdr = (struct ieee80211_hdr *) skb->data; |
105 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 106 | } |
c2d1560a JB |
107 | } |
108 | ||
4ee73f33 | 109 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
c2d1560a JB |
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 | ||
4ee73f33 | 123 | if (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, | |
4ee73f33 | 165 | enum ieee80211_band band, |
8318d78a JB |
166 | size_t frame_len, |
167 | struct ieee80211_rate *rate) | |
c2d1560a | 168 | { |
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 | 181 | |
4ee73f33 | 182 | dur = ieee80211_frame_duration(band, 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 | ||
4ee73f33 | 201 | sband = local->hw.wiphy->bands[frame_txctl->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 */ | |
4ee73f33 | 216 | dur = ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
c2d1560a JB |
217 | erp, short_preamble); |
218 | /* Data frame duration */ | |
4ee73f33 | 219 | dur += ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
c2d1560a JB |
220 | erp, short_preamble); |
221 | /* ACK duration */ | |
4ee73f33 | 222 | dur += ieee80211_frame_duration(sband->band, 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 | ||
4ee73f33 | 242 | sband = local->hw.wiphy->bands[frame_txctl->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 */ | |
4ee73f33 | 256 | dur = ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
c2d1560a | 257 | erp, short_preamble); |
e039fa4a | 258 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 259 | /* ACK duration */ |
4ee73f33 | 260 | dur += ieee80211_frame_duration(sband->band, 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 | ||
3a25a8c8 JB |
268 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
269 | { | |
270 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
271 | int n_acs = IEEE80211_NUM_ACS; |
272 | ||
273 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
274 | n_acs = 1; | |
3a25a8c8 JB |
275 | |
276 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
277 | int ac; | |
278 | ||
f142c6b9 JB |
279 | if (!sdata->dev) |
280 | continue; | |
281 | ||
3a25a8c8 JB |
282 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
283 | continue; | |
284 | ||
285 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && | |
286 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
287 | continue; | |
288 | ||
a6f38ac3 | 289 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
290 | int ac_queue = sdata->vif.hw_queue[ac]; |
291 | ||
292 | if (ac_queue == queue || | |
293 | (sdata->vif.cab_queue == queue && | |
294 | local->queue_stop_reasons[ac_queue] == 0 && | |
295 | skb_queue_empty(&local->pending[ac_queue]))) | |
296 | netif_wake_subqueue(sdata->dev, ac); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
ce7c9111 KV |
301 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
302 | enum queue_stop_reason reason) | |
c2d1560a JB |
303 | { |
304 | struct ieee80211_local *local = hw_to_local(hw); | |
305 | ||
b5878a2d JB |
306 | trace_wake_queue(local, queue, reason); |
307 | ||
e4e72fb4 JB |
308 | if (WARN_ON(queue >= hw->queues)) |
309 | return; | |
ce7c9111 | 310 | |
ada15125 JB |
311 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
312 | return; | |
313 | ||
96f5e66e JB |
314 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
315 | ||
316 | if (local->queue_stop_reasons[queue] != 0) | |
317 | /* someone still has this queue stopped */ | |
318 | return; | |
319 | ||
7236fe29 JB |
320 | if (skb_queue_empty(&local->pending[queue])) { |
321 | rcu_read_lock(); | |
3a25a8c8 | 322 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
323 | rcu_read_unlock(); |
324 | } else | |
3b8d81e0 | 325 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 326 | } |
ce7c9111 | 327 | |
96f5e66e JB |
328 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
329 | enum queue_stop_reason reason) | |
ce7c9111 KV |
330 | { |
331 | struct ieee80211_local *local = hw_to_local(hw); | |
332 | unsigned long flags; | |
333 | ||
334 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
335 | __ieee80211_wake_queue(hw, queue, reason); | |
336 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
337 | } | |
338 | ||
339 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
340 | { | |
341 | ieee80211_wake_queue_by_reason(hw, queue, | |
342 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
343 | } | |
c2d1560a JB |
344 | EXPORT_SYMBOL(ieee80211_wake_queue); |
345 | ||
ce7c9111 KV |
346 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
347 | enum queue_stop_reason reason) | |
c2d1560a JB |
348 | { |
349 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 350 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 351 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 352 | |
b5878a2d JB |
353 | trace_stop_queue(local, queue, reason); |
354 | ||
e4e72fb4 JB |
355 | if (WARN_ON(queue >= hw->queues)) |
356 | return; | |
96f5e66e | 357 | |
ada15125 JB |
358 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
359 | return; | |
360 | ||
2a577d98 | 361 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 | 362 | |
a6f38ac3 JB |
363 | if (local->hw.queues < IEEE80211_NUM_ACS) |
364 | n_acs = 1; | |
365 | ||
cf0277e7 | 366 | rcu_read_lock(); |
3a25a8c8 JB |
367 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
368 | int ac; | |
369 | ||
f142c6b9 JB |
370 | if (!sdata->dev) |
371 | continue; | |
372 | ||
a6f38ac3 | 373 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
374 | if (sdata->vif.hw_queue[ac] == queue || |
375 | sdata->vif.cab_queue == queue) | |
376 | netif_stop_subqueue(sdata->dev, ac); | |
377 | } | |
378 | } | |
cf0277e7 | 379 | rcu_read_unlock(); |
c2d1560a | 380 | } |
ce7c9111 | 381 | |
96f5e66e JB |
382 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
383 | enum queue_stop_reason reason) | |
ce7c9111 KV |
384 | { |
385 | struct ieee80211_local *local = hw_to_local(hw); | |
386 | unsigned long flags; | |
387 | ||
388 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
389 | __ieee80211_stop_queue(hw, queue, reason); | |
390 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
391 | } | |
392 | ||
393 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
394 | { | |
395 | ieee80211_stop_queue_by_reason(hw, queue, | |
396 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
397 | } | |
c2d1560a JB |
398 | EXPORT_SYMBOL(ieee80211_stop_queue); |
399 | ||
8f77f384 JB |
400 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
401 | struct sk_buff *skb) | |
402 | { | |
403 | struct ieee80211_hw *hw = &local->hw; | |
404 | unsigned long flags; | |
a7bc376c | 405 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 406 | int queue = info->hw_queue; |
a7bc376c JB |
407 | |
408 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 409 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
410 | return; |
411 | } | |
8f77f384 JB |
412 | |
413 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
414 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 415 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
416 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
417 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
418 | } | |
419 | ||
b0b97a8a JB |
420 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
421 | struct sk_buff_head *skbs, | |
422 | void (*fn)(void *data), void *data) | |
8f77f384 JB |
423 | { |
424 | struct ieee80211_hw *hw = &local->hw; | |
425 | struct sk_buff *skb; | |
426 | unsigned long flags; | |
b0b97a8a | 427 | int queue, i; |
8f77f384 JB |
428 | |
429 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 430 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
431 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
432 | ||
433 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 434 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
435 | continue; |
436 | } | |
437 | ||
3a25a8c8 | 438 | queue = info->hw_queue; |
4644ae89 JB |
439 | |
440 | __ieee80211_stop_queue(hw, queue, | |
441 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
442 | ||
3b8d81e0 | 443 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
444 | } |
445 | ||
50a9432d JB |
446 | if (fn) |
447 | fn(data); | |
448 | ||
3b8d81e0 | 449 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
450 | __ieee80211_wake_queue(hw, i, |
451 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 452 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
453 | } |
454 | ||
ce7c9111 KV |
455 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
456 | enum queue_stop_reason reason) | |
c2d1560a | 457 | { |
ce7c9111 KV |
458 | struct ieee80211_local *local = hw_to_local(hw); |
459 | unsigned long flags; | |
c2d1560a JB |
460 | int i; |
461 | ||
ce7c9111 KV |
462 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
463 | ||
96f5e66e | 464 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
465 | __ieee80211_stop_queue(hw, i, reason); |
466 | ||
467 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
468 | } | |
469 | ||
470 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
471 | { | |
472 | ieee80211_stop_queues_by_reason(hw, | |
473 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
474 | } |
475 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
476 | ||
92ab8535 TW |
477 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
478 | { | |
479 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
480 | unsigned long flags; |
481 | int ret; | |
96f5e66e | 482 | |
e4e72fb4 JB |
483 | if (WARN_ON(queue >= hw->queues)) |
484 | return true; | |
96f5e66e | 485 | |
3b8d81e0 JB |
486 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
487 | ret = !!local->queue_stop_reasons[queue]; | |
488 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
489 | return ret; | |
92ab8535 TW |
490 | } |
491 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
492 | ||
ce7c9111 KV |
493 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
494 | enum queue_stop_reason reason) | |
c2d1560a | 495 | { |
ce7c9111 KV |
496 | struct ieee80211_local *local = hw_to_local(hw); |
497 | unsigned long flags; | |
c2d1560a JB |
498 | int i; |
499 | ||
ce7c9111 KV |
500 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
501 | ||
e4e72fb4 | 502 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
503 | __ieee80211_wake_queue(hw, i, reason); |
504 | ||
505 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
506 | } | |
507 | ||
508 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
509 | { | |
510 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
511 | } |
512 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 513 | |
32bfd35d | 514 | void ieee80211_iterate_active_interfaces( |
8b2c9824 | 515 | struct ieee80211_hw *hw, u32 iter_flags, |
32bfd35d JB |
516 | void (*iterator)(void *data, u8 *mac, |
517 | struct ieee80211_vif *vif), | |
518 | void *data) | |
dabeb344 JB |
519 | { |
520 | struct ieee80211_local *local = hw_to_local(hw); | |
521 | struct ieee80211_sub_if_data *sdata; | |
522 | ||
c771c9d8 | 523 | mutex_lock(&local->iflist_mtx); |
2f561feb ID |
524 | |
525 | list_for_each_entry(sdata, &local->interfaces, list) { | |
526 | switch (sdata->vif.type) { | |
05c914fe JB |
527 | case NL80211_IFTYPE_MONITOR: |
528 | case NL80211_IFTYPE_AP_VLAN: | |
2f561feb | 529 | continue; |
2ca27bcf | 530 | default: |
2f561feb ID |
531 | break; |
532 | } | |
8b2c9824 JB |
533 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
534 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
535 | continue; | |
9607e6b6 | 536 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 537 | iterator(data, sdata->vif.addr, |
2f561feb ID |
538 | &sdata->vif); |
539 | } | |
540 | ||
685fb72b JB |
541 | sdata = rcu_dereference_protected(local->monitor_sdata, |
542 | lockdep_is_held(&local->iflist_mtx)); | |
8b2c9824 JB |
543 | if (sdata && |
544 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
545 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b JB |
546 | iterator(data, sdata->vif.addr, &sdata->vif); |
547 | ||
c771c9d8 | 548 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
549 | } |
550 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
551 | ||
552 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 553 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
554 | void (*iterator)(void *data, u8 *mac, |
555 | struct ieee80211_vif *vif), | |
556 | void *data) | |
557 | { | |
558 | struct ieee80211_local *local = hw_to_local(hw); | |
559 | struct ieee80211_sub_if_data *sdata; | |
560 | ||
e38bad47 | 561 | rcu_read_lock(); |
dabeb344 | 562 | |
e38bad47 | 563 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 564 | switch (sdata->vif.type) { |
05c914fe JB |
565 | case NL80211_IFTYPE_MONITOR: |
566 | case NL80211_IFTYPE_AP_VLAN: | |
dabeb344 | 567 | continue; |
2ca27bcf | 568 | default: |
dabeb344 JB |
569 | break; |
570 | } | |
8b2c9824 JB |
571 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
572 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
573 | continue; | |
9607e6b6 | 574 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 575 | iterator(data, sdata->vif.addr, |
32bfd35d | 576 | &sdata->vif); |
dabeb344 | 577 | } |
e38bad47 | 578 | |
685fb72b | 579 | sdata = rcu_dereference(local->monitor_sdata); |
8b2c9824 JB |
580 | if (sdata && |
581 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
582 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b JB |
583 | iterator(data, sdata->vif.addr, &sdata->vif); |
584 | ||
e38bad47 | 585 | rcu_read_unlock(); |
dabeb344 | 586 | } |
2f561feb | 587 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
37ffc8da | 588 | |
42935eca LR |
589 | /* |
590 | * Nothing should have been stuffed into the workqueue during | |
591 | * the suspend->resume cycle. If this WARN is seen then there | |
592 | * is a bug with either the driver suspend or something in | |
593 | * mac80211 stuffing into the workqueue which we haven't yet | |
594 | * cleared during mac80211's suspend cycle. | |
595 | */ | |
596 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
597 | { | |
ceb99fe0 JB |
598 | if (WARN(local->suspended && !local->resuming, |
599 | "queueing ieee80211 work while going to suspend\n")) | |
600 | return false; | |
42935eca LR |
601 | |
602 | return true; | |
603 | } | |
604 | ||
605 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
606 | { | |
607 | struct ieee80211_local *local = hw_to_local(hw); | |
608 | ||
609 | if (!ieee80211_can_queue_work(local)) | |
610 | return; | |
611 | ||
612 | queue_work(local->workqueue, work); | |
613 | } | |
614 | EXPORT_SYMBOL(ieee80211_queue_work); | |
615 | ||
616 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
617 | struct delayed_work *dwork, | |
618 | unsigned long delay) | |
619 | { | |
620 | struct ieee80211_local *local = hw_to_local(hw); | |
621 | ||
622 | if (!ieee80211_can_queue_work(local)) | |
623 | return; | |
624 | ||
625 | queue_delayed_work(local->workqueue, dwork, delay); | |
626 | } | |
627 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
628 | ||
dd76986b JB |
629 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, |
630 | struct ieee802_11_elems *elems, | |
631 | u64 filter, u32 crc) | |
632 | { | |
633 | size_t left = len; | |
634 | u8 *pos = start; | |
635 | bool calc_crc = filter != 0; | |
fcff4f10 | 636 | DECLARE_BITMAP(seen_elems, 256); |
dd76986b | 637 | |
fcff4f10 | 638 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
639 | memset(elems, 0, sizeof(*elems)); |
640 | elems->ie_start = start; | |
641 | elems->total_len = len; | |
642 | ||
643 | while (left >= 2) { | |
644 | u8 id, elen; | |
fcff4f10 | 645 | bool elem_parse_failed; |
dd76986b JB |
646 | |
647 | id = *pos++; | |
648 | elen = *pos++; | |
649 | left -= 2; | |
650 | ||
fcff4f10 PS |
651 | if (elen > left) { |
652 | elems->parse_error = true; | |
dd76986b | 653 | break; |
fcff4f10 PS |
654 | } |
655 | ||
9690fb16 JB |
656 | switch (id) { |
657 | case WLAN_EID_SSID: | |
658 | case WLAN_EID_SUPP_RATES: | |
659 | case WLAN_EID_FH_PARAMS: | |
660 | case WLAN_EID_DS_PARAMS: | |
661 | case WLAN_EID_CF_PARAMS: | |
662 | case WLAN_EID_TIM: | |
663 | case WLAN_EID_IBSS_PARAMS: | |
664 | case WLAN_EID_CHALLENGE: | |
665 | case WLAN_EID_RSN: | |
666 | case WLAN_EID_ERP_INFO: | |
667 | case WLAN_EID_EXT_SUPP_RATES: | |
668 | case WLAN_EID_HT_CAPABILITY: | |
669 | case WLAN_EID_HT_OPERATION: | |
670 | case WLAN_EID_VHT_CAPABILITY: | |
671 | case WLAN_EID_VHT_OPERATION: | |
672 | case WLAN_EID_MESH_ID: | |
673 | case WLAN_EID_MESH_CONFIG: | |
674 | case WLAN_EID_PEER_MGMT: | |
675 | case WLAN_EID_PREQ: | |
676 | case WLAN_EID_PREP: | |
677 | case WLAN_EID_PERR: | |
678 | case WLAN_EID_RANN: | |
679 | case WLAN_EID_CHANNEL_SWITCH: | |
680 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
681 | case WLAN_EID_COUNTRY: | |
682 | case WLAN_EID_PWR_CONSTRAINT: | |
683 | case WLAN_EID_TIMEOUT_INTERVAL: | |
684 | if (test_bit(id, seen_elems)) { | |
685 | elems->parse_error = true; | |
686 | left -= elen; | |
687 | pos += elen; | |
688 | continue; | |
689 | } | |
690 | break; | |
fcff4f10 | 691 | } |
dd76986b JB |
692 | |
693 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
694 | crc = crc32_be(crc, pos - 2, elen + 2); | |
695 | ||
fcff4f10 PS |
696 | elem_parse_failed = false; |
697 | ||
dd76986b JB |
698 | switch (id) { |
699 | case WLAN_EID_SSID: | |
700 | elems->ssid = pos; | |
701 | elems->ssid_len = elen; | |
702 | break; | |
703 | case WLAN_EID_SUPP_RATES: | |
704 | elems->supp_rates = pos; | |
705 | elems->supp_rates_len = elen; | |
706 | break; | |
707 | case WLAN_EID_FH_PARAMS: | |
708 | elems->fh_params = pos; | |
709 | elems->fh_params_len = elen; | |
710 | break; | |
711 | case WLAN_EID_DS_PARAMS: | |
712 | elems->ds_params = pos; | |
713 | elems->ds_params_len = elen; | |
714 | break; | |
715 | case WLAN_EID_CF_PARAMS: | |
716 | elems->cf_params = pos; | |
717 | elems->cf_params_len = elen; | |
718 | break; | |
719 | case WLAN_EID_TIM: | |
720 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
721 | elems->tim = (void *)pos; | |
722 | elems->tim_len = elen; | |
fcff4f10 PS |
723 | } else |
724 | elem_parse_failed = true; | |
dd76986b JB |
725 | break; |
726 | case WLAN_EID_IBSS_PARAMS: | |
727 | elems->ibss_params = pos; | |
728 | elems->ibss_params_len = elen; | |
729 | break; | |
730 | case WLAN_EID_CHALLENGE: | |
731 | elems->challenge = pos; | |
732 | elems->challenge_len = elen; | |
733 | break; | |
734 | case WLAN_EID_VENDOR_SPECIFIC: | |
735 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
736 | pos[2] == 0xf2) { | |
737 | /* Microsoft OUI (00:50:F2) */ | |
738 | ||
739 | if (calc_crc) | |
740 | crc = crc32_be(crc, pos - 2, elen + 2); | |
741 | ||
742 | if (pos[3] == 1) { | |
743 | /* OUI Type 1 - WPA IE */ | |
744 | elems->wpa = pos; | |
745 | elems->wpa_len = elen; | |
746 | } else if (elen >= 5 && pos[3] == 2) { | |
747 | /* OUI Type 2 - WMM IE */ | |
748 | if (pos[4] == 0) { | |
749 | elems->wmm_info = pos; | |
750 | elems->wmm_info_len = elen; | |
751 | } else if (pos[4] == 1) { | |
752 | elems->wmm_param = pos; | |
753 | elems->wmm_param_len = elen; | |
754 | } | |
755 | } | |
756 | } | |
757 | break; | |
758 | case WLAN_EID_RSN: | |
759 | elems->rsn = pos; | |
760 | elems->rsn_len = elen; | |
761 | break; | |
762 | case WLAN_EID_ERP_INFO: | |
763 | elems->erp_info = pos; | |
764 | elems->erp_info_len = elen; | |
765 | break; | |
766 | case WLAN_EID_EXT_SUPP_RATES: | |
767 | elems->ext_supp_rates = pos; | |
768 | elems->ext_supp_rates_len = elen; | |
769 | break; | |
770 | case WLAN_EID_HT_CAPABILITY: | |
771 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
772 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
773 | else |
774 | elem_parse_failed = true; | |
dd76986b | 775 | break; |
074d46d1 JB |
776 | case WLAN_EID_HT_OPERATION: |
777 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
778 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
779 | else |
780 | elem_parse_failed = true; | |
dd76986b | 781 | break; |
818255ea MP |
782 | case WLAN_EID_VHT_CAPABILITY: |
783 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
784 | elems->vht_cap_elem = (void *)pos; | |
785 | else | |
786 | elem_parse_failed = true; | |
787 | break; | |
788 | case WLAN_EID_VHT_OPERATION: | |
789 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
790 | elems->vht_operation = (void *)pos; | |
791 | else | |
792 | elem_parse_failed = true; | |
793 | break; | |
dd76986b JB |
794 | case WLAN_EID_MESH_ID: |
795 | elems->mesh_id = pos; | |
796 | elems->mesh_id_len = elen; | |
797 | break; | |
798 | case WLAN_EID_MESH_CONFIG: | |
799 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
800 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
801 | else |
802 | elem_parse_failed = true; | |
dd76986b JB |
803 | break; |
804 | case WLAN_EID_PEER_MGMT: | |
805 | elems->peering = pos; | |
806 | elems->peering_len = elen; | |
807 | break; | |
808 | case WLAN_EID_PREQ: | |
809 | elems->preq = pos; | |
810 | elems->preq_len = elen; | |
811 | break; | |
812 | case WLAN_EID_PREP: | |
813 | elems->prep = pos; | |
814 | elems->prep_len = elen; | |
815 | break; | |
816 | case WLAN_EID_PERR: | |
817 | elems->perr = pos; | |
818 | elems->perr_len = elen; | |
819 | break; | |
820 | case WLAN_EID_RANN: | |
821 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
822 | elems->rann = (void *)pos; | |
fcff4f10 PS |
823 | else |
824 | elem_parse_failed = true; | |
dd76986b JB |
825 | break; |
826 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
827 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
828 | elem_parse_failed = true; | |
829 | break; | |
830 | } | |
831 | elems->ch_switch_ie = (void *)pos; | |
dd76986b JB |
832 | break; |
833 | case WLAN_EID_QUIET: | |
834 | if (!elems->quiet_elem) { | |
835 | elems->quiet_elem = pos; | |
836 | elems->quiet_elem_len = elen; | |
837 | } | |
838 | elems->num_of_quiet_elem++; | |
839 | break; | |
840 | case WLAN_EID_COUNTRY: | |
841 | elems->country_elem = pos; | |
842 | elems->country_elem_len = elen; | |
843 | break; | |
844 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
845 | if (elen != 1) { |
846 | elem_parse_failed = true; | |
847 | break; | |
848 | } | |
dd76986b | 849 | elems->pwr_constr_elem = pos; |
dd76986b JB |
850 | break; |
851 | case WLAN_EID_TIMEOUT_INTERVAL: | |
852 | elems->timeout_int = pos; | |
853 | elems->timeout_int_len = elen; | |
854 | break; | |
855 | default: | |
856 | break; | |
857 | } | |
858 | ||
fcff4f10 PS |
859 | if (elem_parse_failed) |
860 | elems->parse_error = true; | |
861 | else | |
5df45690 | 862 | __set_bit(id, seen_elems); |
fcff4f10 | 863 | |
dd76986b JB |
864 | left -= elen; |
865 | pos += elen; | |
866 | } | |
867 | ||
fcff4f10 PS |
868 | if (left != 0) |
869 | elems->parse_error = true; | |
870 | ||
dd76986b JB |
871 | return crc; |
872 | } | |
873 | ||
37ffc8da JB |
874 | void ieee802_11_parse_elems(u8 *start, size_t len, |
875 | struct ieee802_11_elems *elems) | |
d91f36db JB |
876 | { |
877 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); | |
878 | } | |
879 | ||
3abead59 JB |
880 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
881 | bool bss_notify) | |
5825fe10 JB |
882 | { |
883 | struct ieee80211_local *local = sdata->local; | |
884 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 885 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 886 | int ac; |
a8ce8544 | 887 | bool use_11b, enable_qos; |
aa837e1d | 888 | int aCWmin, aCWmax; |
5825fe10 JB |
889 | |
890 | if (!local->ops->conf_tx) | |
891 | return; | |
892 | ||
54bcbc69 JB |
893 | if (local->hw.queues < IEEE80211_NUM_ACS) |
894 | return; | |
895 | ||
5825fe10 JB |
896 | memset(&qparam, 0, sizeof(qparam)); |
897 | ||
55de908a JB |
898 | rcu_read_lock(); |
899 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
900 | use_11b = (chanctx_conf && | |
901 | chanctx_conf->channel->band == IEEE80211_BAND_2GHZ) && | |
aa837e1d | 902 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 903 | rcu_read_unlock(); |
5825fe10 | 904 | |
a8ce8544 SG |
905 | /* |
906 | * By default disable QoS in STA mode for old access points, which do | |
907 | * not support 802.11e. New APs will provide proper queue parameters, | |
908 | * that we will configure later. | |
909 | */ | |
910 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
911 | ||
54bcbc69 | 912 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
aa837e1d JB |
913 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
914 | aCWmax = 1023; | |
915 | if (use_11b) | |
916 | aCWmin = 31; | |
917 | else | |
918 | aCWmin = 15; | |
919 | ||
a8ce8544 SG |
920 | if (enable_qos) { |
921 | switch (ac) { | |
922 | case IEEE80211_AC_BK: | |
923 | qparam.cw_max = aCWmax; | |
924 | qparam.cw_min = aCWmin; | |
925 | qparam.txop = 0; | |
926 | qparam.aifs = 7; | |
927 | break; | |
928 | /* never happens but let's not leave undefined */ | |
929 | default: | |
930 | case IEEE80211_AC_BE: | |
931 | qparam.cw_max = aCWmax; | |
932 | qparam.cw_min = aCWmin; | |
933 | qparam.txop = 0; | |
934 | qparam.aifs = 3; | |
935 | break; | |
936 | case IEEE80211_AC_VI: | |
937 | qparam.cw_max = aCWmin; | |
938 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
939 | if (use_11b) | |
940 | qparam.txop = 6016/32; | |
941 | else | |
942 | qparam.txop = 3008/32; | |
943 | qparam.aifs = 2; | |
944 | break; | |
945 | case IEEE80211_AC_VO: | |
946 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
947 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
948 | if (use_11b) | |
949 | qparam.txop = 3264/32; | |
950 | else | |
951 | qparam.txop = 1504/32; | |
952 | qparam.aifs = 2; | |
953 | break; | |
954 | } | |
955 | } else { | |
956 | /* Confiure old 802.11b/g medium access rules. */ | |
7ba10a8e JB |
957 | qparam.cw_max = aCWmax; |
958 | qparam.cw_min = aCWmin; | |
aa837e1d | 959 | qparam.txop = 0; |
aa837e1d | 960 | qparam.aifs = 2; |
aa837e1d | 961 | } |
5825fe10 | 962 | |
ab13315a KV |
963 | qparam.uapsd = false; |
964 | ||
54bcbc69 JB |
965 | sdata->tx_conf[ac] = qparam; |
966 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 967 | } |
e1b3ec1a | 968 | |
f142c6b9 JB |
969 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
970 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 971 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
972 | if (bss_notify) |
973 | ieee80211_bss_info_change_notify(sdata, | |
974 | BSS_CHANGED_QOS); | |
d9734979 | 975 | } |
5825fe10 | 976 | } |
e50db65c | 977 | |
46900298 JB |
978 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
979 | const size_t supp_rates_len, | |
980 | const u8 *supp_rates) | |
981 | { | |
55de908a | 982 | struct ieee80211_chanctx_conf *chanctx_conf; |
46900298 JB |
983 | int i, have_higher_than_11mbit = 0; |
984 | ||
985 | /* cf. IEEE 802.11 9.2.12 */ | |
986 | for (i = 0; i < supp_rates_len; i++) | |
987 | if ((supp_rates[i] & 0x7f) * 5 > 110) | |
988 | have_higher_than_11mbit = 1; | |
989 | ||
55de908a JB |
990 | rcu_read_lock(); |
991 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
992 | ||
993 | if (chanctx_conf && | |
994 | chanctx_conf->channel->band == IEEE80211_BAND_2GHZ && | |
46900298 JB |
995 | have_higher_than_11mbit) |
996 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
997 | else | |
998 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
55de908a | 999 | rcu_read_unlock(); |
46900298 | 1000 | |
3abead59 | 1001 | ieee80211_set_wmm_default(sdata, true); |
46900298 JB |
1002 | } |
1003 | ||
881d948c | 1004 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
96dd22ac JB |
1005 | enum ieee80211_band band) |
1006 | { | |
1007 | struct ieee80211_supported_band *sband; | |
1008 | struct ieee80211_rate *bitrates; | |
881d948c | 1009 | u32 mandatory_rates; |
96dd22ac JB |
1010 | enum ieee80211_rate_flags mandatory_flag; |
1011 | int i; | |
1012 | ||
1013 | sband = local->hw.wiphy->bands[band]; | |
4ee73f33 MK |
1014 | if (WARN_ON(!sband)) |
1015 | return 1; | |
96dd22ac JB |
1016 | |
1017 | if (band == IEEE80211_BAND_2GHZ) | |
1018 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
1019 | else | |
1020 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
1021 | ||
1022 | bitrates = sband->bitrates; | |
1023 | mandatory_rates = 0; | |
1024 | for (i = 0; i < sband->n_bitrates; i++) | |
1025 | if (bitrates[i].flags & mandatory_flag) | |
1026 | mandatory_rates |= BIT(i); | |
1027 | return mandatory_rates; | |
1028 | } | |
46900298 JB |
1029 | |
1030 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
700e8ea6 | 1031 | u16 transaction, u16 auth_alg, u16 status, |
efa6a09d AQ |
1032 | u8 *extra, size_t extra_len, const u8 *da, |
1033 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx) | |
46900298 JB |
1034 | { |
1035 | struct ieee80211_local *local = sdata->local; | |
1036 | struct sk_buff *skb; | |
1037 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1038 | int err; |
46900298 JB |
1039 | |
1040 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
65fc73ac | 1041 | sizeof(*mgmt) + 6 + extra_len); |
d15b8459 | 1042 | if (!skb) |
46900298 | 1043 | return; |
d15b8459 | 1044 | |
46900298 JB |
1045 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1046 | ||
1047 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1048 | memset(mgmt, 0, 24 + 6); | |
1049 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1050 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1051 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1052 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1053 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1054 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1055 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1056 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1057 | if (extra) |
1058 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1059 | |
fffd0934 JB |
1060 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1061 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1062 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1063 | WARN_ON(err); | |
1064 | } | |
1065 | ||
62ae67be JB |
1066 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1067 | ieee80211_tx_skb(sdata, skb); | |
46900298 JB |
1068 | } |
1069 | ||
6ae16775 AQ |
1070 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1071 | const u8 *bssid, u16 stype, u16 reason, | |
1072 | bool send_frame, u8 *frame_buf) | |
1073 | { | |
1074 | struct ieee80211_local *local = sdata->local; | |
1075 | struct sk_buff *skb; | |
1076 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1077 | ||
1078 | /* build frame */ | |
1079 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1080 | mgmt->duration = 0; /* initialize only */ | |
1081 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1082 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1083 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1084 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1085 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1086 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1087 | ||
1088 | if (send_frame) { | |
1089 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1090 | IEEE80211_DEAUTH_FRAME_LEN); | |
1091 | if (!skb) | |
1092 | return; | |
1093 | ||
1094 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1095 | ||
1096 | /* copy in frame */ | |
1097 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1098 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1099 | ||
1100 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1101 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1102 | IEEE80211_SKB_CB(skb)->flags |= | |
1103 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1104 | ||
1105 | ieee80211_tx_skb(sdata, skb); | |
1106 | } | |
1107 | } | |
1108 | ||
de95a54b | 1109 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
4d36ec58 | 1110 | const u8 *ie, size_t ie_len, |
651b5225 JM |
1111 | enum ieee80211_band band, u32 rate_mask, |
1112 | u8 channel) | |
de95a54b JB |
1113 | { |
1114 | struct ieee80211_supported_band *sband; | |
8e664fb3 JB |
1115 | u8 *pos; |
1116 | size_t offset = 0, noffset; | |
1117 | int supp_rates_len, i; | |
8dcb2003 JM |
1118 | u8 rates[32]; |
1119 | int num_rates; | |
1120 | int ext_rates_len; | |
de95a54b | 1121 | |
4d36ec58 | 1122 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1123 | if (WARN_ON_ONCE(!sband)) |
1124 | return 0; | |
de95a54b JB |
1125 | |
1126 | pos = buffer; | |
1127 | ||
8dcb2003 JM |
1128 | num_rates = 0; |
1129 | for (i = 0; i < sband->n_bitrates; i++) { | |
1130 | if ((BIT(i) & rate_mask) == 0) | |
1131 | continue; /* skip rate */ | |
1132 | rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5); | |
1133 | } | |
1134 | ||
1135 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1136 | |
de95a54b | 1137 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1138 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1139 | memcpy(pos, rates, supp_rates_len); |
1140 | pos += supp_rates_len; | |
8e664fb3 JB |
1141 | |
1142 | /* insert "request information" if in custom IEs */ | |
1143 | if (ie && ie_len) { | |
1144 | static const u8 before_extrates[] = { | |
1145 | WLAN_EID_SSID, | |
1146 | WLAN_EID_SUPP_RATES, | |
1147 | WLAN_EID_REQUEST, | |
1148 | }; | |
1149 | noffset = ieee80211_ie_split(ie, ie_len, | |
1150 | before_extrates, | |
1151 | ARRAY_SIZE(before_extrates), | |
1152 | offset); | |
1153 | memcpy(pos, ie + offset, noffset - offset); | |
1154 | pos += noffset - offset; | |
1155 | offset = noffset; | |
1156 | } | |
1157 | ||
8dcb2003 JM |
1158 | ext_rates_len = num_rates - supp_rates_len; |
1159 | if (ext_rates_len > 0) { | |
8e664fb3 | 1160 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1161 | *pos++ = ext_rates_len; |
1162 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1163 | pos += ext_rates_len; | |
8e664fb3 JB |
1164 | } |
1165 | ||
651b5225 JM |
1166 | if (channel && sband->band == IEEE80211_BAND_2GHZ) { |
1167 | *pos++ = WLAN_EID_DS_PARAMS; | |
1168 | *pos++ = 1; | |
1169 | *pos++ = channel; | |
1170 | } | |
1171 | ||
8e664fb3 JB |
1172 | /* insert custom IEs that go before HT */ |
1173 | if (ie && ie_len) { | |
1174 | static const u8 before_ht[] = { | |
1175 | WLAN_EID_SSID, | |
1176 | WLAN_EID_SUPP_RATES, | |
1177 | WLAN_EID_REQUEST, | |
1178 | WLAN_EID_EXT_SUPP_RATES, | |
1179 | WLAN_EID_DS_PARAMS, | |
1180 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1181 | }; | |
1182 | noffset = ieee80211_ie_split(ie, ie_len, | |
1183 | before_ht, ARRAY_SIZE(before_ht), | |
1184 | offset); | |
1185 | memcpy(pos, ie + offset, noffset - offset); | |
1186 | pos += noffset - offset; | |
1187 | offset = noffset; | |
de95a54b JB |
1188 | } |
1189 | ||
42e7aa77 | 1190 | if (sband->ht_cap.ht_supported) |
ef96a842 BG |
1191 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1192 | sband->ht_cap.cap); | |
5ef2d41a | 1193 | |
de95a54b JB |
1194 | /* |
1195 | * If adding more here, adjust code in main.c | |
1196 | * that calculates local->scan_ies_len. | |
1197 | */ | |
1198 | ||
8e664fb3 JB |
1199 | /* add any remaining custom IEs */ |
1200 | if (ie && ie_len) { | |
1201 | noffset = ie_len; | |
1202 | memcpy(pos, ie + offset, noffset - offset); | |
1203 | pos += noffset - offset; | |
de95a54b JB |
1204 | } |
1205 | ||
ba0afa2f MP |
1206 | if (sband->vht_cap.vht_supported) |
1207 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, | |
1208 | sband->vht_cap.cap); | |
1209 | ||
de95a54b JB |
1210 | return pos - buffer; |
1211 | } | |
1212 | ||
a619a4c0 | 1213 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1214 | u8 *dst, u32 ratemask, |
6b77863b | 1215 | struct ieee80211_channel *chan, |
a619a4c0 | 1216 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1217 | const u8 *ie, size_t ie_len, |
1218 | bool directed) | |
46900298 JB |
1219 | { |
1220 | struct ieee80211_local *local = sdata->local; | |
46900298 JB |
1221 | struct sk_buff *skb; |
1222 | struct ieee80211_mgmt *mgmt; | |
7c12ce8b KV |
1223 | size_t buf_len; |
1224 | u8 *buf; | |
6b77863b | 1225 | u8 chan_no; |
7c12ce8b KV |
1226 | |
1227 | /* FIXME: come up with a proper value */ | |
1228 | buf = kmalloc(200 + ie_len, GFP_KERNEL); | |
d15b8459 | 1229 | if (!buf) |
a619a4c0 | 1230 | return NULL; |
46900298 | 1231 | |
a806c558 PS |
1232 | /* |
1233 | * Do not send DS Channel parameter for directed probe requests | |
1234 | * in order to maximize the chance that we get a response. Some | |
1235 | * badly-behaved APs don't respond when this parameter is included. | |
1236 | */ | |
1237 | if (directed) | |
6b77863b | 1238 | chan_no = 0; |
a806c558 | 1239 | else |
6b77863b | 1240 | chan_no = ieee80211_frequency_to_channel(chan->center_freq); |
651b5225 | 1241 | |
6b77863b JB |
1242 | buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len, chan->band, |
1243 | ratemask, chan_no); | |
7c12ce8b KV |
1244 | |
1245 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, | |
1246 | ssid, ssid_len, | |
1247 | buf, buf_len); | |
5b2bbf75 JB |
1248 | if (!skb) |
1249 | goto out; | |
7c12ce8b | 1250 | |
46900298 | 1251 | if (dst) { |
7c12ce8b | 1252 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1253 | memcpy(mgmt->da, dst, ETH_ALEN); |
1254 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1255 | } |
46900298 | 1256 | |
62ae67be | 1257 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 JB |
1258 | |
1259 | out: | |
145b6d1a | 1260 | kfree(buf); |
a619a4c0 JO |
1261 | |
1262 | return skb; | |
1263 | } | |
1264 | ||
1265 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1266 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1267 | const u8 *ie, size_t ie_len, |
fe94fe05 | 1268 | u32 ratemask, bool directed, bool no_cck, |
55de908a | 1269 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1270 | { |
1271 | struct sk_buff *skb; | |
1272 | ||
fe94fe05 | 1273 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1274 | ssid, ssid_len, |
85a237fe | 1275 | ie, ie_len, directed); |
aad14ceb RM |
1276 | if (skb) { |
1277 | if (no_cck) | |
1278 | IEEE80211_SKB_CB(skb)->flags |= | |
1279 | IEEE80211_TX_CTL_NO_CCK_RATE; | |
55de908a JB |
1280 | if (scan) |
1281 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1282 | else | |
1283 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1284 | } |
46900298 JB |
1285 | } |
1286 | ||
1287 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
1288 | struct ieee802_11_elems *elems, | |
9ebb61a2 | 1289 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1290 | { |
1291 | struct ieee80211_supported_band *sband; | |
1292 | struct ieee80211_rate *bitrates; | |
1293 | size_t num_rates; | |
1294 | u32 supp_rates; | |
1295 | int i, j; | |
1296 | sband = local->hw.wiphy->bands[band]; | |
1297 | ||
4ee73f33 MK |
1298 | if (WARN_ON(!sband)) |
1299 | return 1; | |
46900298 JB |
1300 | |
1301 | bitrates = sband->bitrates; | |
1302 | num_rates = sband->n_bitrates; | |
1303 | supp_rates = 0; | |
1304 | for (i = 0; i < elems->supp_rates_len + | |
1305 | elems->ext_supp_rates_len; i++) { | |
1306 | u8 rate = 0; | |
1307 | int own_rate; | |
9ebb61a2 | 1308 | bool is_basic; |
46900298 JB |
1309 | if (i < elems->supp_rates_len) |
1310 | rate = elems->supp_rates[i]; | |
1311 | else if (elems->ext_supp_rates) | |
1312 | rate = elems->ext_supp_rates | |
1313 | [i - elems->supp_rates_len]; | |
1314 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1315 | is_basic = !!(rate & 0x80); |
1316 | ||
1317 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1318 | continue; | |
1319 | ||
1320 | for (j = 0; j < num_rates; j++) { | |
1321 | if (bitrates[j].bitrate == own_rate) { | |
46900298 | 1322 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1323 | if (basic_rates && is_basic) |
1324 | *basic_rates |= BIT(j); | |
1325 | } | |
1326 | } | |
46900298 JB |
1327 | } |
1328 | return supp_rates; | |
1329 | } | |
f2753ddb | 1330 | |
84f6a01c JB |
1331 | void ieee80211_stop_device(struct ieee80211_local *local) |
1332 | { | |
1333 | ieee80211_led_radio(local, false); | |
67408c8c | 1334 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1335 | |
1336 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1337 | |
1338 | flush_workqueue(local->workqueue); | |
678f415f | 1339 | drv_stop(local); |
84f6a01c JB |
1340 | } |
1341 | ||
f2753ddb JB |
1342 | int ieee80211_reconfig(struct ieee80211_local *local) |
1343 | { | |
1344 | struct ieee80211_hw *hw = &local->hw; | |
1345 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1346 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1347 | struct sta_info *sta; |
2683d65b | 1348 | int res, i; |
5bb644a0 | 1349 | |
eecc4800 | 1350 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1351 | if (local->suspended) |
1352 | local->resuming = true; | |
f2753ddb | 1353 | |
eecc4800 JB |
1354 | if (local->wowlan) { |
1355 | local->wowlan = false; | |
1356 | res = drv_resume(local); | |
1357 | if (res < 0) { | |
1358 | local->resuming = false; | |
1359 | return res; | |
1360 | } | |
1361 | if (res == 0) | |
1362 | goto wake_up; | |
1363 | WARN_ON(res > 1); | |
1364 | /* | |
1365 | * res is 1, which means the driver requested | |
1366 | * to go through a regular reset on wakeup. | |
1367 | */ | |
1368 | } | |
1369 | #endif | |
94f9b97b JB |
1370 | /* everything else happens only if HW was up & running */ |
1371 | if (!local->open_count) | |
1372 | goto wake_up; | |
f2753ddb | 1373 | |
94f9b97b JB |
1374 | /* |
1375 | * Upon resume hardware can sometimes be goofy due to | |
1376 | * various platform / driver / bus issues, so restarting | |
1377 | * the device may at times not work immediately. Propagate | |
1378 | * the error. | |
1379 | */ | |
1380 | res = drv_start(local); | |
1381 | if (res) { | |
1382 | WARN(local->suspended, "Hardware became unavailable " | |
1383 | "upon resume. This could be a software issue " | |
1384 | "prior to suspend or a hardware issue.\n"); | |
1385 | return res; | |
f2753ddb JB |
1386 | } |
1387 | ||
7f281975 YAP |
1388 | /* setup fragmentation threshold */ |
1389 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1390 | ||
1391 | /* setup RTS threshold */ | |
1392 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1393 | ||
1394 | /* reset coverage class */ | |
1395 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1396 | ||
94f9b97b JB |
1397 | ieee80211_led_radio(local, true); |
1398 | ieee80211_mod_tpt_led_trig(local, | |
1399 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1400 | ||
f2753ddb | 1401 | /* add interfaces */ |
4b6f1dd6 JB |
1402 | sdata = rtnl_dereference(local->monitor_sdata); |
1403 | if (sdata) { | |
1404 | res = drv_add_interface(local, sdata); | |
1405 | if (WARN_ON(res)) { | |
1406 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
1407 | synchronize_net(); | |
1408 | kfree(sdata); | |
1409 | } | |
1410 | } | |
1411 | ||
f2753ddb JB |
1412 | list_for_each_entry(sdata, &local->interfaces, list) { |
1413 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1414 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1415 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1416 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1417 | } |
1418 | ||
55de908a | 1419 | /* add channel contexts */ |
f0dea9c7 AS |
1420 | if (local->use_chanctx) { |
1421 | mutex_lock(&local->chanctx_mtx); | |
1422 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1423 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1424 | mutex_unlock(&local->chanctx_mtx); | |
1425 | } | |
55de908a | 1426 | |
6352c87f JB |
1427 | list_for_each_entry(sdata, &local->interfaces, list) { |
1428 | struct ieee80211_chanctx_conf *ctx_conf; | |
1429 | ||
1430 | if (!ieee80211_sdata_running(sdata)) | |
1431 | continue; | |
1432 | ||
1433 | mutex_lock(&local->chanctx_mtx); | |
1434 | ctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1435 | lockdep_is_held(&local->chanctx_mtx)); | |
1436 | if (ctx_conf) { | |
1437 | ctx = container_of(ctx_conf, struct ieee80211_chanctx, | |
1438 | conf); | |
1439 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1440 | } | |
1441 | mutex_unlock(&local->chanctx_mtx); | |
1442 | } | |
1443 | ||
f2753ddb | 1444 | /* add STAs back */ |
34e89507 JB |
1445 | mutex_lock(&local->sta_mtx); |
1446 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1447 | enum ieee80211_sta_state state; |
f09603a2 | 1448 | |
2e8d397e AN |
1449 | if (!sta->uploaded) |
1450 | continue; | |
1451 | ||
1452 | /* AP-mode stations will be added later */ | |
1453 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1454 | continue; | |
1455 | ||
1456 | for (state = IEEE80211_STA_NOTEXIST; | |
1457 | state < sta->sta_state; state++) | |
1458 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1459 | state + 1)); | |
f2753ddb | 1460 | } |
34e89507 | 1461 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1462 | |
2683d65b | 1463 | /* reconfigure tx conf */ |
54bcbc69 JB |
1464 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1465 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1466 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1467 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1468 | !ieee80211_sdata_running(sdata)) | |
1469 | continue; | |
f6f3def3 | 1470 | |
54bcbc69 JB |
1471 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1472 | drv_conf_tx(local, sdata, i, | |
1473 | &sdata->tx_conf[i]); | |
1474 | } | |
f6f3def3 | 1475 | } |
2683d65b | 1476 | |
f2753ddb JB |
1477 | /* reconfigure hardware */ |
1478 | ieee80211_hw_config(local, ~0); | |
1479 | ||
f2753ddb | 1480 | ieee80211_configure_filter(local); |
f2753ddb JB |
1481 | |
1482 | /* Finally also reconfigure all the BSS information */ | |
1483 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1484 | u32 changed; |
1485 | ||
9607e6b6 | 1486 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1487 | continue; |
ac8dd506 JB |
1488 | |
1489 | /* common change flags for all interface types */ | |
1490 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1491 | BSS_CHANGED_ERP_PREAMBLE | | |
1492 | BSS_CHANGED_ERP_SLOT | | |
1493 | BSS_CHANGED_HT | | |
1494 | BSS_CHANGED_BASIC_RATES | | |
1495 | BSS_CHANGED_BEACON_INT | | |
1496 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1497 | BSS_CHANGED_CQM | |
55de47f6 | 1498 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1499 | BSS_CHANGED_IDLE | |
1500 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1501 | |
f2753ddb JB |
1502 | switch (sdata->vif.type) { |
1503 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1504 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1505 | BSS_CHANGED_ARP_FILTER | |
1506 | BSS_CHANGED_PS; | |
a7b545f7 | 1507 | mutex_lock(&sdata->u.mgd.mtx); |
ac8dd506 | 1508 | ieee80211_bss_info_change_notify(sdata, changed); |
a7b545f7 | 1509 | mutex_unlock(&sdata->u.mgd.mtx); |
ac8dd506 | 1510 | break; |
f2753ddb | 1511 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1512 | changed |= BSS_CHANGED_IBSS; |
1513 | /* fall through */ | |
f2753ddb | 1514 | case NL80211_IFTYPE_AP: |
e7979ac7 AN |
1515 | changed |= BSS_CHANGED_SSID; |
1516 | ||
1041638f | 1517 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1518 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1519 | ||
1041638f JB |
1520 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1521 | drv_start_ap(local, sdata); | |
1522 | } | |
1523 | ||
7827493b | 1524 | /* fall through */ |
f2753ddb | 1525 | case NL80211_IFTYPE_MESH_POINT: |
ac8dd506 JB |
1526 | changed |= BSS_CHANGED_BEACON | |
1527 | BSS_CHANGED_BEACON_ENABLED; | |
2d0ddec5 | 1528 | ieee80211_bss_info_change_notify(sdata, changed); |
f2753ddb JB |
1529 | break; |
1530 | case NL80211_IFTYPE_WDS: | |
1531 | break; | |
1532 | case NL80211_IFTYPE_AP_VLAN: | |
1533 | case NL80211_IFTYPE_MONITOR: | |
1534 | /* ignore virtual */ | |
1535 | break; | |
98104fde | 1536 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 JB |
1537 | changed = BSS_CHANGED_IDLE; |
1538 | break; | |
f2753ddb | 1539 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1540 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1541 | case NL80211_IFTYPE_P2P_CLIENT: |
1542 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1543 | WARN_ON(1); |
1544 | break; | |
1545 | } | |
1546 | } | |
1547 | ||
8e1b23b9 ES |
1548 | ieee80211_recalc_ps(local, -1); |
1549 | ||
6e1b1b24 EP |
1550 | /* |
1551 | * The sta might be in psm against the ap (e.g. because | |
1552 | * this was the state before a hw restart), so we | |
1553 | * explicitly send a null packet in order to make sure | |
1554 | * it'll sync against the ap (and get out of psm). | |
1555 | */ | |
1556 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1557 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1558 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1559 | continue; | |
1560 | ||
1561 | ieee80211_send_nullfunc(local, sdata, 0); | |
1562 | } | |
1563 | } | |
1564 | ||
2e8d397e AN |
1565 | /* APs are now beaconing, add back stations */ |
1566 | mutex_lock(&local->sta_mtx); | |
1567 | list_for_each_entry(sta, &local->sta_list, list) { | |
1568 | enum ieee80211_sta_state state; | |
1569 | ||
1570 | if (!sta->uploaded) | |
1571 | continue; | |
1572 | ||
1573 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1574 | continue; | |
1575 | ||
1576 | for (state = IEEE80211_STA_NOTEXIST; | |
1577 | state < sta->sta_state; state++) | |
1578 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1579 | state + 1)); | |
1580 | } | |
1581 | mutex_unlock(&local->sta_mtx); | |
1582 | ||
7b21aea0 ES |
1583 | /* add back keys */ |
1584 | list_for_each_entry(sdata, &local->interfaces, list) | |
1585 | if (ieee80211_sdata_running(sdata)) | |
1586 | ieee80211_enable_keys(sdata); | |
1587 | ||
c6209488 | 1588 | wake_up: |
04800ada AN |
1589 | local->in_reconfig = false; |
1590 | barrier(); | |
1591 | ||
2a419056 JB |
1592 | /* |
1593 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1594 | * sessions can be established after a resume. | |
1595 | * | |
1596 | * Also tear down aggregation sessions since reconfiguring | |
1597 | * them in a hardware restart scenario is not easily done | |
1598 | * right now, and the hardware will have lost information | |
1599 | * about the sessions, but we and the AP still think they | |
1600 | * are active. This is really a workaround though. | |
1601 | */ | |
74e2bd1f | 1602 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1603 | mutex_lock(&local->sta_mtx); |
1604 | ||
1605 | list_for_each_entry(sta, &local->sta_list, list) { | |
53f73c09 | 1606 | ieee80211_sta_tear_down_BA_sessions(sta, true); |
c2c98fde | 1607 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1608 | } |
2a419056 JB |
1609 | |
1610 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1611 | } |
74e2bd1f | 1612 | |
f2753ddb JB |
1613 | ieee80211_wake_queues_by_reason(hw, |
1614 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
1615 | ||
5bb644a0 JB |
1616 | /* |
1617 | * If this is for hw restart things are still running. | |
1618 | * We may want to change that later, however. | |
1619 | */ | |
9214ad7f JB |
1620 | if (!local->suspended) { |
1621 | drv_restart_complete(local); | |
5bb644a0 | 1622 | return 0; |
9214ad7f | 1623 | } |
5bb644a0 JB |
1624 | |
1625 | #ifdef CONFIG_PM | |
ceb99fe0 | 1626 | /* first set suspended false, then resuming */ |
5bb644a0 | 1627 | local->suspended = false; |
ceb99fe0 JB |
1628 | mb(); |
1629 | local->resuming = false; | |
5bb644a0 JB |
1630 | |
1631 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1632 | switch(sdata->vif.type) { | |
1633 | case NL80211_IFTYPE_STATION: | |
1634 | ieee80211_sta_restart(sdata); | |
1635 | break; | |
1636 | case NL80211_IFTYPE_ADHOC: | |
1637 | ieee80211_ibss_restart(sdata); | |
1638 | break; | |
1639 | case NL80211_IFTYPE_MESH_POINT: | |
1640 | ieee80211_mesh_restart(sdata); | |
1641 | break; | |
1642 | default: | |
1643 | break; | |
1644 | } | |
1645 | } | |
1646 | ||
26d59535 | 1647 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 | 1648 | |
34e89507 | 1649 | mutex_lock(&local->sta_mtx); |
5bb644a0 JB |
1650 | list_for_each_entry(sta, &local->sta_list, list) |
1651 | mesh_plink_restart(sta); | |
34e89507 | 1652 | mutex_unlock(&local->sta_mtx); |
5bb644a0 JB |
1653 | #else |
1654 | WARN_ON(1); | |
1655 | #endif | |
f2753ddb JB |
1656 | return 0; |
1657 | } | |
42935eca | 1658 | |
95acac61 JB |
1659 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1660 | { | |
1661 | struct ieee80211_sub_if_data *sdata; | |
1662 | struct ieee80211_local *local; | |
1663 | struct ieee80211_key *key; | |
1664 | ||
1665 | if (WARN_ON(!vif)) | |
1666 | return; | |
1667 | ||
1668 | sdata = vif_to_sdata(vif); | |
1669 | local = sdata->local; | |
1670 | ||
1671 | if (WARN_ON(!local->resuming)) | |
1672 | return; | |
1673 | ||
1674 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1675 | return; | |
1676 | ||
1677 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1678 | ||
1679 | mutex_lock(&local->key_mtx); | |
1680 | list_for_each_entry(key, &sdata->key_list, list) | |
1681 | key->flags |= KEY_FLAG_TAINTED; | |
1682 | mutex_unlock(&local->key_mtx); | |
1683 | } | |
1684 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1685 | ||
04ecd257 | 1686 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1687 | { |
04ecd257 JB |
1688 | struct ieee80211_local *local = sdata->local; |
1689 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1690 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1691 | |
04ecd257 | 1692 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1693 | |
04ecd257 JB |
1694 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1695 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1696 | |
04ecd257 | 1697 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1698 | goto unlock; |
0f78231b | 1699 | |
04ecd257 JB |
1700 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1701 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1702 | unlock: |
04ecd257 | 1703 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1704 | } |
8e664fb3 JB |
1705 | |
1706 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) | |
1707 | { | |
1708 | int i; | |
1709 | ||
1710 | for (i = 0; i < n_ids; i++) | |
1711 | if (ids[i] == id) | |
1712 | return true; | |
1713 | return false; | |
1714 | } | |
1715 | ||
1716 | /** | |
1717 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1718 | * | |
1719 | * @ies: the IE buffer | |
1720 | * @ielen: the length of the IE buffer | |
1721 | * @ids: an array with element IDs that are allowed before | |
1722 | * the split | |
1723 | * @n_ids: the size of the element ID array | |
1724 | * @offset: offset where to start splitting in the buffer | |
1725 | * | |
1726 | * This function splits an IE buffer by updating the @offset | |
1727 | * variable to point to the location where the buffer should be | |
1728 | * split. | |
1729 | * | |
1730 | * It assumes that the given IE buffer is well-formed, this | |
1731 | * has to be guaranteed by the caller! | |
1732 | * | |
1733 | * It also assumes that the IEs in the buffer are ordered | |
1734 | * correctly, if not the result of using this function will not | |
1735 | * be ordered correctly either, i.e. it does no reordering. | |
1736 | * | |
1737 | * The function returns the offset where the next part of the | |
1738 | * buffer starts, which may be @ielen if the entire (remainder) | |
1739 | * of the buffer should be used. | |
1740 | */ | |
1741 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1742 | const u8 *ids, int n_ids, size_t offset) | |
1743 | { | |
1744 | size_t pos = offset; | |
1745 | ||
1746 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1747 | pos += 2 + ies[pos + 1]; | |
1748 | ||
1749 | return pos; | |
1750 | } | |
1751 | ||
1752 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1753 | { | |
1754 | size_t pos = offset; | |
1755 | ||
1756 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1757 | pos += 2 + ies[pos + 1]; | |
1758 | ||
1759 | return pos; | |
1760 | } | |
615f7b9b MV |
1761 | |
1762 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1763 | int rssi_min_thold, | |
1764 | int rssi_max_thold) | |
1765 | { | |
1766 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1767 | ||
1768 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1769 | return; | |
1770 | ||
1771 | /* | |
1772 | * Scale up threshold values before storing it, as the RSSI averaging | |
1773 | * algorithm uses a scaled up value as well. Change this scaling | |
1774 | * factor if the RSSI averaging algorithm changes. | |
1775 | */ | |
1776 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1777 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1778 | } | |
1779 | ||
1780 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1781 | int rssi_min_thold, | |
1782 | int rssi_max_thold) | |
1783 | { | |
1784 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1785 | ||
1786 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
1787 | rssi_min_thold > rssi_max_thold); | |
1788 | ||
1789 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
1790 | rssi_max_thold); | |
1791 | } | |
1792 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
1793 | ||
1794 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
1795 | { | |
1796 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1797 | ||
1798 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
1799 | } | |
1800 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 1801 | |
ef96a842 | 1802 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
1803 | u16 cap) |
1804 | { | |
1805 | __le16 tmp; | |
1806 | ||
1807 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1808 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1809 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
1810 | ||
1811 | /* capability flags */ | |
1812 | tmp = cpu_to_le16(cap); | |
1813 | memcpy(pos, &tmp, sizeof(u16)); | |
1814 | pos += sizeof(u16); | |
1815 | ||
1816 | /* AMPDU parameters */ | |
ef96a842 BG |
1817 | *pos++ = ht_cap->ampdu_factor | |
1818 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
1819 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
1820 | ||
1821 | /* MCS set */ | |
ef96a842 BG |
1822 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
1823 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
1824 | |
1825 | /* extended capabilities */ | |
1826 | pos += sizeof(__le16); | |
1827 | ||
1828 | /* BF capabilities */ | |
1829 | pos += sizeof(__le32); | |
1830 | ||
1831 | /* antenna selection */ | |
1832 | pos += sizeof(u8); | |
1833 | ||
1834 | return pos; | |
1835 | } | |
1836 | ||
ba0afa2f MP |
1837 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
1838 | u32 cap) | |
1839 | { | |
1840 | __le32 tmp; | |
1841 | ||
1842 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
1843 | *pos++ = sizeof(struct ieee80211_vht_cap); |
1844 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
1845 | |
1846 | /* capability flags */ | |
1847 | tmp = cpu_to_le32(cap); | |
1848 | memcpy(pos, &tmp, sizeof(u32)); | |
1849 | pos += sizeof(u32); | |
1850 | ||
1851 | /* VHT MCS set */ | |
1852 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
1853 | pos += sizeof(vht_cap->vht_mcs); | |
1854 | ||
1855 | return pos; | |
1856 | } | |
1857 | ||
074d46d1 | 1858 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 | 1859 | struct ieee80211_channel *channel, |
431e3154 AN |
1860 | enum nl80211_channel_type channel_type, |
1861 | u16 prot_mode) | |
42e7aa77 | 1862 | { |
074d46d1 | 1863 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 1864 | /* Build HT Information */ |
074d46d1 JB |
1865 | *pos++ = WLAN_EID_HT_OPERATION; |
1866 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
1867 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
1868 | ht_oper->primary_chan = | |
42e7aa77 AS |
1869 | ieee80211_frequency_to_channel(channel->center_freq); |
1870 | switch (channel_type) { | |
1871 | case NL80211_CHAN_HT40MINUS: | |
074d46d1 | 1872 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
42e7aa77 AS |
1873 | break; |
1874 | case NL80211_CHAN_HT40PLUS: | |
074d46d1 | 1875 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
42e7aa77 AS |
1876 | break; |
1877 | case NL80211_CHAN_HT20: | |
1878 | default: | |
074d46d1 | 1879 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
1880 | break; |
1881 | } | |
aee286c2 TP |
1882 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
1883 | channel_type != NL80211_CHAN_NO_HT && | |
1884 | channel_type != NL80211_CHAN_HT20) | |
074d46d1 | 1885 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 1886 | |
431e3154 | 1887 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 1888 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
1889 | |
1890 | /* It seems that Basic MCS set and Supported MCS set | |
1891 | are identical for the first 10 bytes */ | |
074d46d1 JB |
1892 | memset(&ht_oper->basic_set, 0, 16); |
1893 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 1894 | |
074d46d1 | 1895 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
1896 | } |
1897 | ||
1898 | enum nl80211_channel_type | |
074d46d1 | 1899 | ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper) |
42e7aa77 AS |
1900 | { |
1901 | enum nl80211_channel_type channel_type; | |
1902 | ||
074d46d1 | 1903 | if (!ht_oper) |
42e7aa77 AS |
1904 | return NL80211_CHAN_NO_HT; |
1905 | ||
074d46d1 | 1906 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
1907 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
1908 | channel_type = NL80211_CHAN_HT20; | |
1909 | break; | |
1910 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
1911 | channel_type = NL80211_CHAN_HT40PLUS; | |
1912 | break; | |
1913 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
1914 | channel_type = NL80211_CHAN_HT40MINUS; | |
1915 | break; | |
1916 | default: | |
1917 | channel_type = NL80211_CHAN_NO_HT; | |
1918 | } | |
1919 | ||
1920 | return channel_type; | |
1921 | } | |
1922 | ||
fc8a7321 | 1923 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
1924 | struct sk_buff *skb, bool need_basic, |
1925 | enum ieee80211_band band) | |
768db343 | 1926 | { |
768db343 AN |
1927 | struct ieee80211_local *local = sdata->local; |
1928 | struct ieee80211_supported_band *sband; | |
1929 | int rate; | |
1930 | u8 i, rates, *pos; | |
fc8a7321 | 1931 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
768db343 | 1932 | |
6b77863b | 1933 | sband = local->hw.wiphy->bands[band]; |
768db343 AN |
1934 | rates = sband->n_bitrates; |
1935 | if (rates > 8) | |
1936 | rates = 8; | |
1937 | ||
1938 | if (skb_tailroom(skb) < rates + 2) | |
1939 | return -ENOMEM; | |
1940 | ||
1941 | pos = skb_put(skb, rates + 2); | |
1942 | *pos++ = WLAN_EID_SUPP_RATES; | |
1943 | *pos++ = rates; | |
1944 | for (i = 0; i < rates; i++) { | |
657c3e0c AN |
1945 | u8 basic = 0; |
1946 | if (need_basic && basic_rates & BIT(i)) | |
1947 | basic = 0x80; | |
768db343 | 1948 | rate = sband->bitrates[i].bitrate; |
657c3e0c | 1949 | *pos++ = basic | (u8) (rate / 5); |
768db343 AN |
1950 | } |
1951 | ||
1952 | return 0; | |
1953 | } | |
1954 | ||
fc8a7321 | 1955 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
1956 | struct sk_buff *skb, bool need_basic, |
1957 | enum ieee80211_band band) | |
768db343 | 1958 | { |
768db343 AN |
1959 | struct ieee80211_local *local = sdata->local; |
1960 | struct ieee80211_supported_band *sband; | |
1961 | int rate; | |
1962 | u8 i, exrates, *pos; | |
fc8a7321 | 1963 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
768db343 | 1964 | |
6b77863b | 1965 | sband = local->hw.wiphy->bands[band]; |
768db343 AN |
1966 | exrates = sband->n_bitrates; |
1967 | if (exrates > 8) | |
1968 | exrates -= 8; | |
1969 | else | |
1970 | exrates = 0; | |
1971 | ||
1972 | if (skb_tailroom(skb) < exrates + 2) | |
1973 | return -ENOMEM; | |
1974 | ||
1975 | if (exrates) { | |
1976 | pos = skb_put(skb, exrates + 2); | |
1977 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
1978 | *pos++ = exrates; | |
1979 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c AN |
1980 | u8 basic = 0; |
1981 | if (need_basic && basic_rates & BIT(i)) | |
1982 | basic = 0x80; | |
768db343 | 1983 | rate = sband->bitrates[i].bitrate; |
657c3e0c | 1984 | *pos++ = basic | (u8) (rate / 5); |
768db343 AN |
1985 | } |
1986 | } | |
1987 | return 0; | |
1988 | } | |
1dae27f8 WYG |
1989 | |
1990 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
1991 | { | |
1992 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1993 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1994 | ||
be6bcabc WYG |
1995 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
1996 | /* non-managed type inferfaces */ | |
1997 | return 0; | |
1998 | } | |
1dae27f8 WYG |
1999 | return ifmgd->ave_beacon_signal; |
2000 | } | |
0d8a0a17 | 2001 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2002 | |
2003 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2004 | { | |
2005 | if (!mcs) | |
2006 | return 1; | |
2007 | ||
2008 | /* TODO: consider rx_highest */ | |
2009 | ||
2010 | if (mcs->rx_mask[3]) | |
2011 | return 4; | |
2012 | if (mcs->rx_mask[2]) | |
2013 | return 3; | |
2014 | if (mcs->rx_mask[1]) | |
2015 | return 2; | |
2016 | return 1; | |
2017 | } | |
f4bda337 TP |
2018 | |
2019 | /** | |
2020 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2021 | * @local: mac80211 hw info struct | |
2022 | * @status: RX status | |
2023 | * @mpdu_len: total MPDU length (including FCS) | |
2024 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2025 | * | |
2026 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2027 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2028 | * the timestamp to TSF at beginning of MPDU reception. | |
2029 | */ | |
2030 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2031 | struct ieee80211_rx_status *status, | |
2032 | unsigned int mpdu_len, | |
2033 | unsigned int mpdu_offset) | |
2034 | { | |
2035 | u64 ts = status->mactime; | |
2036 | struct rate_info ri; | |
2037 | u16 rate; | |
2038 | ||
2039 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2040 | return 0; | |
2041 | ||
2042 | memset(&ri, 0, sizeof(ri)); | |
2043 | ||
2044 | /* Fill cfg80211 rate info */ | |
2045 | if (status->flag & RX_FLAG_HT) { | |
2046 | ri.mcs = status->rate_idx; | |
2047 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2048 | if (status->flag & RX_FLAG_40MHZ) | |
2049 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2050 | if (status->flag & RX_FLAG_SHORT_GI) | |
2051 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
2052 | } else { | |
2053 | struct ieee80211_supported_band *sband; | |
2054 | ||
2055 | sband = local->hw.wiphy->bands[status->band]; | |
2056 | ri.legacy = sband->bitrates[status->rate_idx].bitrate; | |
2057 | } | |
2058 | ||
2059 | rate = cfg80211_calculate_bitrate(&ri); | |
2060 | ||
2061 | /* rewind from end of MPDU */ | |
2062 | if (status->flag & RX_FLAG_MACTIME_END) | |
2063 | ts -= mpdu_len * 8 * 10 / rate; | |
2064 | ||
2065 | ts += mpdu_offset * 8 * 10 / rate; | |
2066 | ||
2067 | return ts; | |
2068 | } |