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, |
438b61b7 SW |
110 | int rate, int erp, int short_preamble, |
111 | int shift) | |
c2d1560a JB |
112 | { |
113 | int dur; | |
114 | ||
115 | /* calculate duration (in microseconds, rounded up to next higher | |
116 | * integer if it includes a fractional microsecond) to send frame of | |
117 | * len bytes (does not include FCS) at the given rate. Duration will | |
118 | * also include SIFS. | |
119 | * | |
120 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
121 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
122 | * |
123 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
124 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
125 | */ |
126 | ||
4ee73f33 | 127 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
128 | /* |
129 | * OFDM: | |
130 | * | |
131 | * N_DBPS = DATARATE x 4 | |
132 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
133 | * (16 = SIGNAL time, 6 = tail bits) | |
134 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
135 | * | |
136 | * T_SYM = 4 usec | |
438b61b7 | 137 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
138 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
139 | * signal ext = 6 usec | |
140 | */ | |
c2d1560a | 141 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
142 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
143 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
144 | |
145 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
146 | * * times 4 for 5 MHz | |
147 | * * times 2 for 10 MHz | |
148 | */ | |
149 | dur *= 1 << shift; | |
2103dec1 SW |
150 | |
151 | /* rates should already consider the channel bandwidth, | |
152 | * don't apply divisor again. | |
153 | */ | |
154 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
155 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
156 | } else { |
157 | /* | |
158 | * 802.11b or 802.11g with 802.11b compatibility: | |
159 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
160 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
161 | * | |
162 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
163 | * aSIFSTime = 10 usec | |
164 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
165 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
166 | */ | |
167 | dur = 10; /* aSIFSTime = 10 usec */ | |
168 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
169 | ||
170 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
171 | } | |
172 | ||
173 | return dur; | |
174 | } | |
175 | ||
176 | /* Exported duration function for driver use */ | |
32bfd35d JB |
177 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
178 | struct ieee80211_vif *vif, | |
4ee73f33 | 179 | enum ieee80211_band band, |
8318d78a JB |
180 | size_t frame_len, |
181 | struct ieee80211_rate *rate) | |
c2d1560a | 182 | { |
25d834e1 | 183 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 184 | u16 dur; |
438b61b7 | 185 | int erp, shift = 0; |
25d834e1 | 186 | bool short_preamble = false; |
c2d1560a | 187 | |
8318d78a | 188 | erp = 0; |
25d834e1 JB |
189 | if (vif) { |
190 | sdata = vif_to_sdata(vif); | |
bda3933a | 191 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
192 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
193 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 194 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 195 | } |
8318d78a | 196 | |
4ee73f33 | 197 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 198 | short_preamble, shift); |
c2d1560a JB |
199 | |
200 | return cpu_to_le16(dur); | |
201 | } | |
202 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
203 | ||
32bfd35d JB |
204 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
205 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 206 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
207 | { |
208 | struct ieee80211_local *local = hw_to_local(hw); | |
209 | struct ieee80211_rate *rate; | |
25d834e1 | 210 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 211 | bool short_preamble; |
2103dec1 | 212 | int erp, shift = 0, bitrate; |
c2d1560a | 213 | u16 dur; |
2e92e6f2 JB |
214 | struct ieee80211_supported_band *sband; |
215 | ||
4ee73f33 | 216 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 217 | |
25d834e1 | 218 | short_preamble = false; |
7e9ed188 | 219 | |
e039fa4a | 220 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
221 | |
222 | erp = 0; | |
25d834e1 JB |
223 | if (vif) { |
224 | sdata = vif_to_sdata(vif); | |
bda3933a | 225 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
226 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
227 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 228 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 229 | } |
c2d1560a | 230 | |
2103dec1 SW |
231 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
232 | ||
c2d1560a | 233 | /* CTS duration */ |
2103dec1 | 234 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 235 | erp, short_preamble, shift); |
c2d1560a | 236 | /* Data frame duration */ |
2103dec1 | 237 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 238 | erp, short_preamble, shift); |
c2d1560a | 239 | /* ACK duration */ |
2103dec1 | 240 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 241 | erp, short_preamble, shift); |
c2d1560a JB |
242 | |
243 | return cpu_to_le16(dur); | |
244 | } | |
245 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
246 | ||
32bfd35d JB |
247 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
248 | struct ieee80211_vif *vif, | |
c2d1560a | 249 | size_t frame_len, |
e039fa4a | 250 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
251 | { |
252 | struct ieee80211_local *local = hw_to_local(hw); | |
253 | struct ieee80211_rate *rate; | |
25d834e1 | 254 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 255 | bool short_preamble; |
2103dec1 | 256 | int erp, shift = 0, bitrate; |
c2d1560a | 257 | u16 dur; |
2e92e6f2 JB |
258 | struct ieee80211_supported_band *sband; |
259 | ||
4ee73f33 | 260 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 261 | |
25d834e1 | 262 | short_preamble = false; |
7e9ed188 | 263 | |
e039fa4a | 264 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 265 | erp = 0; |
25d834e1 JB |
266 | if (vif) { |
267 | sdata = vif_to_sdata(vif); | |
bda3933a | 268 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
269 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
270 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 271 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 272 | } |
c2d1560a | 273 | |
2103dec1 SW |
274 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
275 | ||
c2d1560a | 276 | /* Data frame duration */ |
2103dec1 | 277 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 278 | erp, short_preamble, shift); |
e039fa4a | 279 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 280 | /* ACK duration */ |
2103dec1 | 281 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 282 | erp, short_preamble, shift); |
c2d1560a JB |
283 | } |
284 | ||
285 | return cpu_to_le16(dur); | |
286 | } | |
287 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
288 | ||
3a25a8c8 JB |
289 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
290 | { | |
291 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
292 | int n_acs = IEEE80211_NUM_ACS; |
293 | ||
294 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
295 | n_acs = 1; | |
3a25a8c8 JB |
296 | |
297 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
298 | int ac; | |
299 | ||
f142c6b9 JB |
300 | if (!sdata->dev) |
301 | continue; | |
302 | ||
3a25a8c8 JB |
303 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
304 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
305 | continue; | |
306 | ||
a6f38ac3 | 307 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
308 | int ac_queue = sdata->vif.hw_queue[ac]; |
309 | ||
310 | if (ac_queue == queue || | |
311 | (sdata->vif.cab_queue == queue && | |
312 | local->queue_stop_reasons[ac_queue] == 0 && | |
313 | skb_queue_empty(&local->pending[ac_queue]))) | |
314 | netif_wake_subqueue(sdata->dev, ac); | |
315 | } | |
316 | } | |
317 | } | |
318 | ||
ce7c9111 KV |
319 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
320 | enum queue_stop_reason reason) | |
c2d1560a JB |
321 | { |
322 | struct ieee80211_local *local = hw_to_local(hw); | |
323 | ||
b5878a2d JB |
324 | trace_wake_queue(local, queue, reason); |
325 | ||
e4e72fb4 JB |
326 | if (WARN_ON(queue >= hw->queues)) |
327 | return; | |
ce7c9111 | 328 | |
ada15125 JB |
329 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
330 | return; | |
331 | ||
96f5e66e JB |
332 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
333 | ||
334 | if (local->queue_stop_reasons[queue] != 0) | |
335 | /* someone still has this queue stopped */ | |
336 | return; | |
337 | ||
7236fe29 JB |
338 | if (skb_queue_empty(&local->pending[queue])) { |
339 | rcu_read_lock(); | |
3a25a8c8 | 340 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
341 | rcu_read_unlock(); |
342 | } else | |
3b8d81e0 | 343 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 344 | } |
ce7c9111 | 345 | |
96f5e66e JB |
346 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
347 | enum queue_stop_reason reason) | |
ce7c9111 KV |
348 | { |
349 | struct ieee80211_local *local = hw_to_local(hw); | |
350 | unsigned long flags; | |
351 | ||
352 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
353 | __ieee80211_wake_queue(hw, queue, reason); | |
354 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
355 | } | |
356 | ||
357 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
358 | { | |
359 | ieee80211_wake_queue_by_reason(hw, queue, | |
360 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
361 | } | |
c2d1560a JB |
362 | EXPORT_SYMBOL(ieee80211_wake_queue); |
363 | ||
ce7c9111 KV |
364 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
365 | enum queue_stop_reason reason) | |
c2d1560a JB |
366 | { |
367 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 368 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 369 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 370 | |
b5878a2d JB |
371 | trace_stop_queue(local, queue, reason); |
372 | ||
e4e72fb4 JB |
373 | if (WARN_ON(queue >= hw->queues)) |
374 | return; | |
96f5e66e | 375 | |
ada15125 JB |
376 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
377 | return; | |
378 | ||
2a577d98 | 379 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 | 380 | |
a6f38ac3 JB |
381 | if (local->hw.queues < IEEE80211_NUM_ACS) |
382 | n_acs = 1; | |
383 | ||
cf0277e7 | 384 | rcu_read_lock(); |
3a25a8c8 JB |
385 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
386 | int ac; | |
387 | ||
f142c6b9 JB |
388 | if (!sdata->dev) |
389 | continue; | |
390 | ||
a6f38ac3 | 391 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
392 | if (sdata->vif.hw_queue[ac] == queue || |
393 | sdata->vif.cab_queue == queue) | |
394 | netif_stop_subqueue(sdata->dev, ac); | |
395 | } | |
396 | } | |
cf0277e7 | 397 | rcu_read_unlock(); |
c2d1560a | 398 | } |
ce7c9111 | 399 | |
96f5e66e JB |
400 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
401 | enum queue_stop_reason reason) | |
ce7c9111 KV |
402 | { |
403 | struct ieee80211_local *local = hw_to_local(hw); | |
404 | unsigned long flags; | |
405 | ||
406 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
407 | __ieee80211_stop_queue(hw, queue, reason); | |
408 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
409 | } | |
410 | ||
411 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
412 | { | |
413 | ieee80211_stop_queue_by_reason(hw, queue, | |
414 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
415 | } | |
c2d1560a JB |
416 | EXPORT_SYMBOL(ieee80211_stop_queue); |
417 | ||
8f77f384 JB |
418 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
419 | struct sk_buff *skb) | |
420 | { | |
421 | struct ieee80211_hw *hw = &local->hw; | |
422 | unsigned long flags; | |
a7bc376c | 423 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 424 | int queue = info->hw_queue; |
a7bc376c JB |
425 | |
426 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 427 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
428 | return; |
429 | } | |
8f77f384 JB |
430 | |
431 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
432 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 433 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
434 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
435 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
436 | } | |
437 | ||
b0b97a8a JB |
438 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
439 | struct sk_buff_head *skbs, | |
440 | void (*fn)(void *data), void *data) | |
8f77f384 JB |
441 | { |
442 | struct ieee80211_hw *hw = &local->hw; | |
443 | struct sk_buff *skb; | |
444 | unsigned long flags; | |
b0b97a8a | 445 | int queue, i; |
8f77f384 JB |
446 | |
447 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 448 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
449 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
450 | ||
451 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 452 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
453 | continue; |
454 | } | |
455 | ||
3a25a8c8 | 456 | queue = info->hw_queue; |
4644ae89 JB |
457 | |
458 | __ieee80211_stop_queue(hw, queue, | |
459 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
460 | ||
3b8d81e0 | 461 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
462 | } |
463 | ||
50a9432d JB |
464 | if (fn) |
465 | fn(data); | |
466 | ||
3b8d81e0 | 467 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
468 | __ieee80211_wake_queue(hw, i, |
469 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 470 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
471 | } |
472 | ||
ce7c9111 | 473 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 JB |
474 | unsigned long queues, |
475 | enum queue_stop_reason reason) | |
c2d1560a | 476 | { |
ce7c9111 KV |
477 | struct ieee80211_local *local = hw_to_local(hw); |
478 | unsigned long flags; | |
c2d1560a JB |
479 | int i; |
480 | ||
ce7c9111 KV |
481 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
482 | ||
445ea4e8 | 483 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
484 | __ieee80211_stop_queue(hw, i, reason); |
485 | ||
486 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
487 | } | |
488 | ||
489 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
490 | { | |
445ea4e8 | 491 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
ce7c9111 | 492 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
c2d1560a JB |
493 | } |
494 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
495 | ||
92ab8535 TW |
496 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
497 | { | |
498 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
499 | unsigned long flags; |
500 | int ret; | |
96f5e66e | 501 | |
e4e72fb4 JB |
502 | if (WARN_ON(queue >= hw->queues)) |
503 | return true; | |
96f5e66e | 504 | |
3b8d81e0 | 505 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
506 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
507 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
508 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
509 | return ret; | |
92ab8535 TW |
510 | } |
511 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
512 | ||
ce7c9111 | 513 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 514 | unsigned long queues, |
ce7c9111 | 515 | enum queue_stop_reason reason) |
c2d1560a | 516 | { |
ce7c9111 KV |
517 | struct ieee80211_local *local = hw_to_local(hw); |
518 | unsigned long flags; | |
c2d1560a JB |
519 | int i; |
520 | ||
ce7c9111 KV |
521 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
522 | ||
445ea4e8 | 523 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
524 | __ieee80211_wake_queue(hw, i, reason); |
525 | ||
526 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
527 | } | |
528 | ||
529 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
530 | { | |
445ea4e8 JB |
531 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
532 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
533 | } |
534 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 535 | |
39ecc01d JB |
536 | void ieee80211_flush_queues(struct ieee80211_local *local, |
537 | struct ieee80211_sub_if_data *sdata) | |
538 | { | |
539 | u32 queues; | |
540 | ||
541 | if (!local->ops->flush) | |
542 | return; | |
543 | ||
544 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
545 | int ac; | |
546 | ||
547 | queues = 0; | |
548 | ||
549 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
550 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
551 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
552 | queues |= BIT(sdata->vif.cab_queue); | |
553 | } else { | |
554 | /* all queues */ | |
555 | queues = BIT(local->hw.queues) - 1; | |
556 | } | |
557 | ||
445ea4e8 JB |
558 | ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, |
559 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
560 | ||
39ecc01d | 561 | drv_flush(local, queues, false); |
445ea4e8 JB |
562 | |
563 | ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, | |
564 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
39ecc01d JB |
565 | } |
566 | ||
c7c71066 JB |
567 | static void __iterate_active_interfaces(struct ieee80211_local *local, |
568 | u32 iter_flags, | |
569 | void (*iterator)(void *data, u8 *mac, | |
570 | struct ieee80211_vif *vif), | |
571 | void *data) | |
dabeb344 | 572 | { |
dabeb344 JB |
573 | struct ieee80211_sub_if_data *sdata; |
574 | ||
c7c71066 | 575 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 576 | switch (sdata->vif.type) { |
05c914fe | 577 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
578 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
579 | continue; | |
580 | break; | |
05c914fe | 581 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 582 | continue; |
2ca27bcf | 583 | default: |
2f561feb ID |
584 | break; |
585 | } | |
8b2c9824 JB |
586 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
587 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
588 | continue; | |
9607e6b6 | 589 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 590 | iterator(data, sdata->vif.addr, |
2f561feb ID |
591 | &sdata->vif); |
592 | } | |
593 | ||
c7c71066 JB |
594 | sdata = rcu_dereference_check(local->monitor_sdata, |
595 | lockdep_is_held(&local->iflist_mtx) || | |
596 | lockdep_rtnl_is_held()); | |
8b2c9824 JB |
597 | if (sdata && |
598 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
599 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b | 600 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 601 | } |
685fb72b | 602 | |
c7c71066 JB |
603 | void ieee80211_iterate_active_interfaces( |
604 | struct ieee80211_hw *hw, u32 iter_flags, | |
605 | void (*iterator)(void *data, u8 *mac, | |
606 | struct ieee80211_vif *vif), | |
607 | void *data) | |
608 | { | |
609 | struct ieee80211_local *local = hw_to_local(hw); | |
610 | ||
611 | mutex_lock(&local->iflist_mtx); | |
612 | __iterate_active_interfaces(local, iter_flags, iterator, data); | |
c771c9d8 | 613 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
614 | } |
615 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
616 | ||
617 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 618 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
619 | void (*iterator)(void *data, u8 *mac, |
620 | struct ieee80211_vif *vif), | |
621 | void *data) | |
622 | { | |
623 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 624 | |
e38bad47 | 625 | rcu_read_lock(); |
c7c71066 JB |
626 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
627 | rcu_read_unlock(); | |
628 | } | |
629 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 630 | |
c7c71066 JB |
631 | void ieee80211_iterate_active_interfaces_rtnl( |
632 | struct ieee80211_hw *hw, u32 iter_flags, | |
633 | void (*iterator)(void *data, u8 *mac, | |
634 | struct ieee80211_vif *vif), | |
635 | void *data) | |
636 | { | |
637 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 638 | |
c7c71066 | 639 | ASSERT_RTNL(); |
685fb72b | 640 | |
c7c71066 | 641 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
dabeb344 | 642 | } |
c7c71066 | 643 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 644 | |
42935eca LR |
645 | /* |
646 | * Nothing should have been stuffed into the workqueue during | |
647 | * the suspend->resume cycle. If this WARN is seen then there | |
648 | * is a bug with either the driver suspend or something in | |
649 | * mac80211 stuffing into the workqueue which we haven't yet | |
650 | * cleared during mac80211's suspend cycle. | |
651 | */ | |
652 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
653 | { | |
ceb99fe0 JB |
654 | if (WARN(local->suspended && !local->resuming, |
655 | "queueing ieee80211 work while going to suspend\n")) | |
656 | return false; | |
42935eca LR |
657 | |
658 | return true; | |
659 | } | |
660 | ||
661 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
662 | { | |
663 | struct ieee80211_local *local = hw_to_local(hw); | |
664 | ||
665 | if (!ieee80211_can_queue_work(local)) | |
666 | return; | |
667 | ||
668 | queue_work(local->workqueue, work); | |
669 | } | |
670 | EXPORT_SYMBOL(ieee80211_queue_work); | |
671 | ||
672 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
673 | struct delayed_work *dwork, | |
674 | unsigned long delay) | |
675 | { | |
676 | struct ieee80211_local *local = hw_to_local(hw); | |
677 | ||
678 | if (!ieee80211_can_queue_work(local)) | |
679 | return; | |
680 | ||
681 | queue_delayed_work(local->workqueue, dwork, delay); | |
682 | } | |
683 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
684 | ||
35d865af | 685 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
686 | struct ieee802_11_elems *elems, |
687 | u64 filter, u32 crc) | |
688 | { | |
689 | size_t left = len; | |
35d865af | 690 | const u8 *pos = start; |
dd76986b | 691 | bool calc_crc = filter != 0; |
fcff4f10 | 692 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 693 | const u8 *ie; |
dd76986b | 694 | |
fcff4f10 | 695 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
696 | memset(elems, 0, sizeof(*elems)); |
697 | elems->ie_start = start; | |
698 | elems->total_len = len; | |
699 | ||
700 | while (left >= 2) { | |
701 | u8 id, elen; | |
fcff4f10 | 702 | bool elem_parse_failed; |
dd76986b JB |
703 | |
704 | id = *pos++; | |
705 | elen = *pos++; | |
706 | left -= 2; | |
707 | ||
fcff4f10 PS |
708 | if (elen > left) { |
709 | elems->parse_error = true; | |
dd76986b | 710 | break; |
fcff4f10 PS |
711 | } |
712 | ||
9690fb16 JB |
713 | switch (id) { |
714 | case WLAN_EID_SSID: | |
715 | case WLAN_EID_SUPP_RATES: | |
716 | case WLAN_EID_FH_PARAMS: | |
717 | case WLAN_EID_DS_PARAMS: | |
718 | case WLAN_EID_CF_PARAMS: | |
719 | case WLAN_EID_TIM: | |
720 | case WLAN_EID_IBSS_PARAMS: | |
721 | case WLAN_EID_CHALLENGE: | |
722 | case WLAN_EID_RSN: | |
723 | case WLAN_EID_ERP_INFO: | |
724 | case WLAN_EID_EXT_SUPP_RATES: | |
725 | case WLAN_EID_HT_CAPABILITY: | |
726 | case WLAN_EID_HT_OPERATION: | |
727 | case WLAN_EID_VHT_CAPABILITY: | |
728 | case WLAN_EID_VHT_OPERATION: | |
729 | case WLAN_EID_MESH_ID: | |
730 | case WLAN_EID_MESH_CONFIG: | |
731 | case WLAN_EID_PEER_MGMT: | |
732 | case WLAN_EID_PREQ: | |
733 | case WLAN_EID_PREP: | |
734 | case WLAN_EID_PERR: | |
735 | case WLAN_EID_RANN: | |
736 | case WLAN_EID_CHANNEL_SWITCH: | |
737 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
738 | case WLAN_EID_COUNTRY: | |
739 | case WLAN_EID_PWR_CONSTRAINT: | |
740 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 741 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 742 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 743 | case WLAN_EID_CHAN_SWITCH_PARAM: |
b2e506bf JB |
744 | /* |
745 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
746 | * that if the content gets bigger it might be needed more than once | |
747 | */ | |
9690fb16 JB |
748 | if (test_bit(id, seen_elems)) { |
749 | elems->parse_error = true; | |
750 | left -= elen; | |
751 | pos += elen; | |
752 | continue; | |
753 | } | |
754 | break; | |
fcff4f10 | 755 | } |
dd76986b JB |
756 | |
757 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
758 | crc = crc32_be(crc, pos - 2, elen + 2); | |
759 | ||
fcff4f10 PS |
760 | elem_parse_failed = false; |
761 | ||
dd76986b JB |
762 | switch (id) { |
763 | case WLAN_EID_SSID: | |
764 | elems->ssid = pos; | |
765 | elems->ssid_len = elen; | |
766 | break; | |
767 | case WLAN_EID_SUPP_RATES: | |
768 | elems->supp_rates = pos; | |
769 | elems->supp_rates_len = elen; | |
770 | break; | |
dd76986b | 771 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
772 | if (elen >= 1) |
773 | elems->ds_params = pos; | |
774 | else | |
775 | elem_parse_failed = true; | |
dd76986b | 776 | break; |
dd76986b JB |
777 | case WLAN_EID_TIM: |
778 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
779 | elems->tim = (void *)pos; | |
780 | elems->tim_len = elen; | |
fcff4f10 PS |
781 | } else |
782 | elem_parse_failed = true; | |
dd76986b | 783 | break; |
dd76986b JB |
784 | case WLAN_EID_CHALLENGE: |
785 | elems->challenge = pos; | |
786 | elems->challenge_len = elen; | |
787 | break; | |
788 | case WLAN_EID_VENDOR_SPECIFIC: | |
789 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
790 | pos[2] == 0xf2) { | |
791 | /* Microsoft OUI (00:50:F2) */ | |
792 | ||
793 | if (calc_crc) | |
794 | crc = crc32_be(crc, pos - 2, elen + 2); | |
795 | ||
441a33ba | 796 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
797 | /* OUI Type 2 - WMM IE */ |
798 | if (pos[4] == 0) { | |
799 | elems->wmm_info = pos; | |
800 | elems->wmm_info_len = elen; | |
801 | } else if (pos[4] == 1) { | |
802 | elems->wmm_param = pos; | |
803 | elems->wmm_param_len = elen; | |
804 | } | |
805 | } | |
806 | } | |
807 | break; | |
808 | case WLAN_EID_RSN: | |
809 | elems->rsn = pos; | |
810 | elems->rsn_len = elen; | |
811 | break; | |
812 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
813 | if (elen >= 1) |
814 | elems->erp_info = pos; | |
815 | else | |
816 | elem_parse_failed = true; | |
dd76986b JB |
817 | break; |
818 | case WLAN_EID_EXT_SUPP_RATES: | |
819 | elems->ext_supp_rates = pos; | |
820 | elems->ext_supp_rates_len = elen; | |
821 | break; | |
822 | case WLAN_EID_HT_CAPABILITY: | |
823 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
824 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
825 | else |
826 | elem_parse_failed = true; | |
dd76986b | 827 | break; |
074d46d1 JB |
828 | case WLAN_EID_HT_OPERATION: |
829 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
830 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
831 | else |
832 | elem_parse_failed = true; | |
dd76986b | 833 | break; |
818255ea MP |
834 | case WLAN_EID_VHT_CAPABILITY: |
835 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
836 | elems->vht_cap_elem = (void *)pos; | |
837 | else | |
838 | elem_parse_failed = true; | |
839 | break; | |
840 | case WLAN_EID_VHT_OPERATION: | |
841 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
842 | elems->vht_operation = (void *)pos; | |
843 | else | |
844 | elem_parse_failed = true; | |
845 | break; | |
bee7f586 JB |
846 | case WLAN_EID_OPMODE_NOTIF: |
847 | if (elen > 0) | |
848 | elems->opmode_notif = pos; | |
849 | else | |
850 | elem_parse_failed = true; | |
851 | break; | |
dd76986b JB |
852 | case WLAN_EID_MESH_ID: |
853 | elems->mesh_id = pos; | |
854 | elems->mesh_id_len = elen; | |
855 | break; | |
856 | case WLAN_EID_MESH_CONFIG: | |
857 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
858 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
859 | else |
860 | elem_parse_failed = true; | |
dd76986b JB |
861 | break; |
862 | case WLAN_EID_PEER_MGMT: | |
863 | elems->peering = pos; | |
864 | elems->peering_len = elen; | |
865 | break; | |
3f52b7e3 MP |
866 | case WLAN_EID_MESH_AWAKE_WINDOW: |
867 | if (elen >= 2) | |
868 | elems->awake_window = (void *)pos; | |
869 | break; | |
dd76986b JB |
870 | case WLAN_EID_PREQ: |
871 | elems->preq = pos; | |
872 | elems->preq_len = elen; | |
873 | break; | |
874 | case WLAN_EID_PREP: | |
875 | elems->prep = pos; | |
876 | elems->prep_len = elen; | |
877 | break; | |
878 | case WLAN_EID_PERR: | |
879 | elems->perr = pos; | |
880 | elems->perr_len = elen; | |
881 | break; | |
882 | case WLAN_EID_RANN: | |
883 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
884 | elems->rann = (void *)pos; | |
fcff4f10 PS |
885 | else |
886 | elem_parse_failed = true; | |
dd76986b JB |
887 | break; |
888 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
889 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
890 | elem_parse_failed = true; | |
891 | break; | |
892 | } | |
893 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 894 | break; |
b4f286a1 JB |
895 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
896 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
897 | elem_parse_failed = true; | |
898 | break; | |
899 | } | |
900 | elems->ext_chansw_ie = (void *)pos; | |
901 | break; | |
85220d71 JB |
902 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
903 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
904 | elem_parse_failed = true; | |
905 | break; | |
906 | } | |
907 | elems->sec_chan_offs = (void *)pos; | |
908 | break; | |
8f2535b9 CYY |
909 | case WLAN_EID_CHAN_SWITCH_PARAM: |
910 | if (elen != | |
911 | sizeof(*elems->mesh_chansw_params_ie)) { | |
912 | elem_parse_failed = true; | |
913 | break; | |
914 | } | |
915 | elems->mesh_chansw_params_ie = (void *)pos; | |
916 | break; | |
b2e506bf JB |
917 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
918 | if (!action || | |
919 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
920 | elem_parse_failed = true; | |
921 | break; | |
922 | } | |
923 | elems->wide_bw_chansw_ie = (void *)pos; | |
924 | break; | |
925 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
926 | if (action) { | |
927 | elem_parse_failed = true; | |
928 | break; | |
929 | } | |
930 | /* | |
931 | * This is a bit tricky, but as we only care about | |
932 | * the wide bandwidth channel switch element, so | |
933 | * just parse it out manually. | |
934 | */ | |
935 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
936 | pos, elen); | |
937 | if (ie) { | |
938 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
939 | elems->wide_bw_chansw_ie = | |
940 | (void *)(ie + 2); | |
941 | else | |
942 | elem_parse_failed = true; | |
943 | } | |
944 | break; | |
dd76986b JB |
945 | case WLAN_EID_COUNTRY: |
946 | elems->country_elem = pos; | |
947 | elems->country_elem_len = elen; | |
948 | break; | |
949 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
950 | if (elen != 1) { |
951 | elem_parse_failed = true; | |
952 | break; | |
953 | } | |
dd76986b | 954 | elems->pwr_constr_elem = pos; |
dd76986b JB |
955 | break; |
956 | case WLAN_EID_TIMEOUT_INTERVAL: | |
79ba1d89 JB |
957 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
958 | elems->timeout_int = (void *)pos; | |
959 | else | |
960 | elem_parse_failed = true; | |
dd76986b JB |
961 | break; |
962 | default: | |
963 | break; | |
964 | } | |
965 | ||
fcff4f10 PS |
966 | if (elem_parse_failed) |
967 | elems->parse_error = true; | |
968 | else | |
5df45690 | 969 | __set_bit(id, seen_elems); |
fcff4f10 | 970 | |
dd76986b JB |
971 | left -= elen; |
972 | pos += elen; | |
973 | } | |
974 | ||
fcff4f10 PS |
975 | if (left != 0) |
976 | elems->parse_error = true; | |
977 | ||
dd76986b JB |
978 | return crc; |
979 | } | |
980 | ||
3abead59 JB |
981 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
982 | bool bss_notify) | |
5825fe10 JB |
983 | { |
984 | struct ieee80211_local *local = sdata->local; | |
985 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 986 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 987 | int ac; |
a8ce8544 | 988 | bool use_11b, enable_qos; |
aa837e1d | 989 | int aCWmin, aCWmax; |
5825fe10 JB |
990 | |
991 | if (!local->ops->conf_tx) | |
992 | return; | |
993 | ||
54bcbc69 JB |
994 | if (local->hw.queues < IEEE80211_NUM_ACS) |
995 | return; | |
996 | ||
5825fe10 JB |
997 | memset(&qparam, 0, sizeof(qparam)); |
998 | ||
55de908a JB |
999 | rcu_read_lock(); |
1000 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1001 | use_11b = (chanctx_conf && | |
4bf88530 | 1002 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1003 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1004 | rcu_read_unlock(); |
5825fe10 | 1005 | |
a8ce8544 SG |
1006 | /* |
1007 | * By default disable QoS in STA mode for old access points, which do | |
1008 | * not support 802.11e. New APs will provide proper queue parameters, | |
1009 | * that we will configure later. | |
1010 | */ | |
1011 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1012 | ||
1f4ffde8 FZ |
1013 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1014 | aCWmax = 1023; | |
1015 | if (use_11b) | |
1016 | aCWmin = 31; | |
1017 | else | |
1018 | aCWmin = 15; | |
1019 | ||
1020 | /* Confiure old 802.11b/g medium access rules. */ | |
1021 | qparam.cw_max = aCWmax; | |
1022 | qparam.cw_min = aCWmin; | |
1023 | qparam.txop = 0; | |
1024 | qparam.aifs = 2; | |
aa837e1d | 1025 | |
1f4ffde8 FZ |
1026 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1027 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1028 | if (enable_qos) { |
1029 | switch (ac) { | |
1030 | case IEEE80211_AC_BK: | |
1031 | qparam.cw_max = aCWmax; | |
1032 | qparam.cw_min = aCWmin; | |
1033 | qparam.txop = 0; | |
1034 | qparam.aifs = 7; | |
1035 | break; | |
1036 | /* never happens but let's not leave undefined */ | |
1037 | default: | |
1038 | case IEEE80211_AC_BE: | |
1039 | qparam.cw_max = aCWmax; | |
1040 | qparam.cw_min = aCWmin; | |
1041 | qparam.txop = 0; | |
1042 | qparam.aifs = 3; | |
1043 | break; | |
1044 | case IEEE80211_AC_VI: | |
1045 | qparam.cw_max = aCWmin; | |
1046 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
1047 | if (use_11b) | |
1048 | qparam.txop = 6016/32; | |
1049 | else | |
1050 | qparam.txop = 3008/32; | |
1051 | qparam.aifs = 2; | |
1052 | break; | |
1053 | case IEEE80211_AC_VO: | |
1054 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1055 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
1056 | if (use_11b) | |
1057 | qparam.txop = 3264/32; | |
1058 | else | |
1059 | qparam.txop = 1504/32; | |
1060 | qparam.aifs = 2; | |
1061 | break; | |
1062 | } | |
aa837e1d | 1063 | } |
5825fe10 | 1064 | |
ab13315a KV |
1065 | qparam.uapsd = false; |
1066 | ||
54bcbc69 JB |
1067 | sdata->tx_conf[ac] = qparam; |
1068 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1069 | } |
e1b3ec1a | 1070 | |
f142c6b9 JB |
1071 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1072 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1073 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1074 | if (bss_notify) |
1075 | ieee80211_bss_info_change_notify(sdata, | |
1076 | BSS_CHANGED_QOS); | |
d9734979 | 1077 | } |
5825fe10 | 1078 | } |
e50db65c | 1079 | |
46900298 | 1080 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1081 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1082 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1083 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1084 | u32 tx_flags) | |
46900298 JB |
1085 | { |
1086 | struct ieee80211_local *local = sdata->local; | |
1087 | struct sk_buff *skb; | |
1088 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1089 | int err; |
46900298 | 1090 | |
15e230ab FZ |
1091 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
1092 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); | |
d15b8459 | 1093 | if (!skb) |
46900298 | 1094 | return; |
d15b8459 | 1095 | |
46900298 JB |
1096 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1097 | ||
1098 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1099 | memset(mgmt, 0, 24 + 6); | |
1100 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1101 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1102 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1103 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1104 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1105 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1106 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1107 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1108 | if (extra) |
1109 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1110 | |
fffd0934 JB |
1111 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1112 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1113 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1114 | WARN_ON(err); | |
1115 | } | |
1116 | ||
1672c0e3 JB |
1117 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1118 | tx_flags; | |
62ae67be | 1119 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1120 | } |
1121 | ||
6ae16775 AQ |
1122 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1123 | const u8 *bssid, u16 stype, u16 reason, | |
1124 | bool send_frame, u8 *frame_buf) | |
1125 | { | |
1126 | struct ieee80211_local *local = sdata->local; | |
1127 | struct sk_buff *skb; | |
1128 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1129 | ||
1130 | /* build frame */ | |
1131 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1132 | mgmt->duration = 0; /* initialize only */ | |
1133 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1134 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1135 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1136 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1137 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1138 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1139 | ||
1140 | if (send_frame) { | |
1141 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1142 | IEEE80211_DEAUTH_FRAME_LEN); | |
1143 | if (!skb) | |
1144 | return; | |
1145 | ||
1146 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1147 | ||
1148 | /* copy in frame */ | |
1149 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1150 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1151 | ||
1152 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1153 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1154 | IEEE80211_SKB_CB(skb)->flags |= | |
1155 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1156 | ||
1157 | ieee80211_tx_skb(sdata, skb); | |
1158 | } | |
1159 | } | |
1160 | ||
de95a54b | 1161 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
c604b9f2 | 1162 | size_t buffer_len, const u8 *ie, size_t ie_len, |
651b5225 | 1163 | enum ieee80211_band band, u32 rate_mask, |
2103dec1 | 1164 | struct cfg80211_chan_def *chandef) |
de95a54b JB |
1165 | { |
1166 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1167 | u8 *pos = buffer, *end = buffer + buffer_len; |
8e664fb3 JB |
1168 | size_t offset = 0, noffset; |
1169 | int supp_rates_len, i; | |
8dcb2003 JM |
1170 | u8 rates[32]; |
1171 | int num_rates; | |
1172 | int ext_rates_len; | |
2103dec1 SW |
1173 | int shift; |
1174 | u32 rate_flags; | |
de95a54b | 1175 | |
4d36ec58 | 1176 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1177 | if (WARN_ON_ONCE(!sband)) |
1178 | return 0; | |
de95a54b | 1179 | |
2103dec1 SW |
1180 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1181 | shift = ieee80211_chandef_get_shift(chandef); | |
1182 | ||
8dcb2003 JM |
1183 | num_rates = 0; |
1184 | for (i = 0; i < sband->n_bitrates; i++) { | |
1185 | if ((BIT(i) & rate_mask) == 0) | |
1186 | continue; /* skip rate */ | |
2103dec1 SW |
1187 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1188 | continue; | |
1189 | ||
1190 | rates[num_rates++] = | |
1191 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1192 | (1 << shift) * 5); | |
8dcb2003 JM |
1193 | } |
1194 | ||
1195 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1196 | |
c604b9f2 JB |
1197 | if (end - pos < 2 + supp_rates_len) |
1198 | goto out_err; | |
de95a54b | 1199 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1200 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1201 | memcpy(pos, rates, supp_rates_len); |
1202 | pos += supp_rates_len; | |
8e664fb3 JB |
1203 | |
1204 | /* insert "request information" if in custom IEs */ | |
1205 | if (ie && ie_len) { | |
1206 | static const u8 before_extrates[] = { | |
1207 | WLAN_EID_SSID, | |
1208 | WLAN_EID_SUPP_RATES, | |
1209 | WLAN_EID_REQUEST, | |
1210 | }; | |
1211 | noffset = ieee80211_ie_split(ie, ie_len, | |
1212 | before_extrates, | |
1213 | ARRAY_SIZE(before_extrates), | |
1214 | offset); | |
c604b9f2 JB |
1215 | if (end - pos < noffset - offset) |
1216 | goto out_err; | |
8e664fb3 JB |
1217 | memcpy(pos, ie + offset, noffset - offset); |
1218 | pos += noffset - offset; | |
1219 | offset = noffset; | |
1220 | } | |
1221 | ||
8dcb2003 JM |
1222 | ext_rates_len = num_rates - supp_rates_len; |
1223 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1224 | if (end - pos < 2 + ext_rates_len) |
1225 | goto out_err; | |
8e664fb3 | 1226 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1227 | *pos++ = ext_rates_len; |
1228 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1229 | pos += ext_rates_len; | |
8e664fb3 JB |
1230 | } |
1231 | ||
2103dec1 | 1232 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1233 | if (end - pos < 3) |
1234 | goto out_err; | |
651b5225 JM |
1235 | *pos++ = WLAN_EID_DS_PARAMS; |
1236 | *pos++ = 1; | |
2103dec1 SW |
1237 | *pos++ = ieee80211_frequency_to_channel( |
1238 | chandef->chan->center_freq); | |
651b5225 JM |
1239 | } |
1240 | ||
8e664fb3 JB |
1241 | /* insert custom IEs that go before HT */ |
1242 | if (ie && ie_len) { | |
1243 | static const u8 before_ht[] = { | |
1244 | WLAN_EID_SSID, | |
1245 | WLAN_EID_SUPP_RATES, | |
1246 | WLAN_EID_REQUEST, | |
1247 | WLAN_EID_EXT_SUPP_RATES, | |
1248 | WLAN_EID_DS_PARAMS, | |
1249 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1250 | }; | |
1251 | noffset = ieee80211_ie_split(ie, ie_len, | |
1252 | before_ht, ARRAY_SIZE(before_ht), | |
1253 | offset); | |
c604b9f2 JB |
1254 | if (end - pos < noffset - offset) |
1255 | goto out_err; | |
8e664fb3 JB |
1256 | memcpy(pos, ie + offset, noffset - offset); |
1257 | pos += noffset - offset; | |
1258 | offset = noffset; | |
de95a54b JB |
1259 | } |
1260 | ||
c604b9f2 JB |
1261 | if (sband->ht_cap.ht_supported) { |
1262 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1263 | goto out_err; | |
ef96a842 BG |
1264 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1265 | sband->ht_cap.cap); | |
c604b9f2 | 1266 | } |
5ef2d41a | 1267 | |
de95a54b JB |
1268 | /* |
1269 | * If adding more here, adjust code in main.c | |
1270 | * that calculates local->scan_ies_len. | |
1271 | */ | |
1272 | ||
8e664fb3 JB |
1273 | /* add any remaining custom IEs */ |
1274 | if (ie && ie_len) { | |
1275 | noffset = ie_len; | |
c604b9f2 JB |
1276 | if (end - pos < noffset - offset) |
1277 | goto out_err; | |
8e664fb3 JB |
1278 | memcpy(pos, ie + offset, noffset - offset); |
1279 | pos += noffset - offset; | |
de95a54b JB |
1280 | } |
1281 | ||
c604b9f2 JB |
1282 | if (sband->vht_cap.vht_supported) { |
1283 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1284 | goto out_err; | |
ba0afa2f MP |
1285 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1286 | sband->vht_cap.cap); | |
c604b9f2 | 1287 | } |
ba0afa2f | 1288 | |
c604b9f2 JB |
1289 | return pos - buffer; |
1290 | out_err: | |
1291 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1292 | return pos - buffer; |
1293 | } | |
1294 | ||
a619a4c0 | 1295 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1296 | u8 *dst, u32 ratemask, |
6b77863b | 1297 | struct ieee80211_channel *chan, |
a619a4c0 | 1298 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1299 | const u8 *ie, size_t ie_len, |
1300 | bool directed) | |
46900298 JB |
1301 | { |
1302 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1303 | struct cfg80211_chan_def chandef; |
46900298 JB |
1304 | struct sk_buff *skb; |
1305 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1306 | int ies_len; |
46900298 | 1307 | |
a806c558 PS |
1308 | /* |
1309 | * Do not send DS Channel parameter for directed probe requests | |
1310 | * in order to maximize the chance that we get a response. Some | |
1311 | * badly-behaved APs don't respond when this parameter is included. | |
1312 | */ | |
2103dec1 | 1313 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1314 | if (directed) |
2103dec1 | 1315 | chandef.chan = NULL; |
a806c558 | 1316 | else |
2103dec1 | 1317 | chandef.chan = chan; |
651b5225 | 1318 | |
7c12ce8b | 1319 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1320 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1321 | if (!skb) |
b9a9ada1 JB |
1322 | return NULL; |
1323 | ||
1324 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), | |
1325 | skb_tailroom(skb), | |
1326 | ie, ie_len, chan->band, | |
2103dec1 | 1327 | ratemask, &chandef); |
b9a9ada1 | 1328 | skb_put(skb, ies_len); |
7c12ce8b | 1329 | |
46900298 | 1330 | if (dst) { |
7c12ce8b | 1331 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1332 | memcpy(mgmt->da, dst, ETH_ALEN); |
1333 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1334 | } |
46900298 | 1335 | |
62ae67be | 1336 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1337 | |
a619a4c0 JO |
1338 | return skb; |
1339 | } | |
1340 | ||
1341 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1342 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1343 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1344 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1345 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1346 | { |
1347 | struct sk_buff *skb; | |
1348 | ||
fe94fe05 | 1349 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1350 | ssid, ssid_len, |
85a237fe | 1351 | ie, ie_len, directed); |
aad14ceb | 1352 | if (skb) { |
1672c0e3 | 1353 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1354 | if (scan) |
1355 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1356 | else | |
1357 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1358 | } |
46900298 JB |
1359 | } |
1360 | ||
2103dec1 | 1361 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1362 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1363 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1364 | { |
1365 | struct ieee80211_supported_band *sband; | |
1366 | struct ieee80211_rate *bitrates; | |
1367 | size_t num_rates; | |
2103dec1 SW |
1368 | u32 supp_rates, rate_flags; |
1369 | int i, j, shift; | |
1370 | sband = sdata->local->hw.wiphy->bands[band]; | |
1371 | ||
1372 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1373 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1374 | |
4ee73f33 MK |
1375 | if (WARN_ON(!sband)) |
1376 | return 1; | |
46900298 JB |
1377 | |
1378 | bitrates = sband->bitrates; | |
1379 | num_rates = sband->n_bitrates; | |
1380 | supp_rates = 0; | |
1381 | for (i = 0; i < elems->supp_rates_len + | |
1382 | elems->ext_supp_rates_len; i++) { | |
1383 | u8 rate = 0; | |
1384 | int own_rate; | |
9ebb61a2 | 1385 | bool is_basic; |
46900298 JB |
1386 | if (i < elems->supp_rates_len) |
1387 | rate = elems->supp_rates[i]; | |
1388 | else if (elems->ext_supp_rates) | |
1389 | rate = elems->ext_supp_rates | |
1390 | [i - elems->supp_rates_len]; | |
1391 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1392 | is_basic = !!(rate & 0x80); |
1393 | ||
1394 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1395 | continue; | |
1396 | ||
1397 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1398 | int brate; |
1399 | if ((rate_flags & sband->bitrates[j].flags) | |
1400 | != rate_flags) | |
1401 | continue; | |
1402 | ||
1403 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1404 | 1 << shift); | |
1405 | ||
1406 | if (brate == own_rate) { | |
46900298 | 1407 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1408 | if (basic_rates && is_basic) |
1409 | *basic_rates |= BIT(j); | |
1410 | } | |
1411 | } | |
46900298 JB |
1412 | } |
1413 | return supp_rates; | |
1414 | } | |
f2753ddb | 1415 | |
84f6a01c JB |
1416 | void ieee80211_stop_device(struct ieee80211_local *local) |
1417 | { | |
1418 | ieee80211_led_radio(local, false); | |
67408c8c | 1419 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1420 | |
1421 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1422 | |
1423 | flush_workqueue(local->workqueue); | |
678f415f | 1424 | drv_stop(local); |
84f6a01c JB |
1425 | } |
1426 | ||
153a5fc4 SG |
1427 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1428 | struct ieee80211_sub_if_data *sdata) | |
1429 | { | |
1430 | struct ieee80211_chanctx_conf *conf; | |
1431 | struct ieee80211_chanctx *ctx; | |
1432 | ||
1433 | if (!local->use_chanctx) | |
1434 | return; | |
1435 | ||
1436 | mutex_lock(&local->chanctx_mtx); | |
1437 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1438 | lockdep_is_held(&local->chanctx_mtx)); | |
1439 | if (conf) { | |
1440 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1441 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1442 | } | |
1443 | mutex_unlock(&local->chanctx_mtx); | |
1444 | } | |
1445 | ||
f2753ddb JB |
1446 | int ieee80211_reconfig(struct ieee80211_local *local) |
1447 | { | |
1448 | struct ieee80211_hw *hw = &local->hw; | |
1449 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1450 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1451 | struct sta_info *sta; |
2683d65b | 1452 | int res, i; |
d888130a JB |
1453 | bool reconfig_due_to_wowlan = false; |
1454 | ||
8f21b0ad | 1455 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1456 | if (local->suspended) |
1457 | local->resuming = true; | |
f2753ddb | 1458 | |
eecc4800 | 1459 | if (local->wowlan) { |
eecc4800 | 1460 | res = drv_resume(local); |
27b3eb9c | 1461 | local->wowlan = false; |
eecc4800 JB |
1462 | if (res < 0) { |
1463 | local->resuming = false; | |
1464 | return res; | |
1465 | } | |
1466 | if (res == 0) | |
1467 | goto wake_up; | |
1468 | WARN_ON(res > 1); | |
1469 | /* | |
1470 | * res is 1, which means the driver requested | |
1471 | * to go through a regular reset on wakeup. | |
1472 | */ | |
d888130a | 1473 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1474 | } |
1475 | #endif | |
94f9b97b JB |
1476 | /* everything else happens only if HW was up & running */ |
1477 | if (!local->open_count) | |
1478 | goto wake_up; | |
f2753ddb | 1479 | |
94f9b97b JB |
1480 | /* |
1481 | * Upon resume hardware can sometimes be goofy due to | |
1482 | * various platform / driver / bus issues, so restarting | |
1483 | * the device may at times not work immediately. Propagate | |
1484 | * the error. | |
1485 | */ | |
1486 | res = drv_start(local); | |
1487 | if (res) { | |
1488 | WARN(local->suspended, "Hardware became unavailable " | |
1489 | "upon resume. This could be a software issue " | |
1490 | "prior to suspend or a hardware issue.\n"); | |
1491 | return res; | |
f2753ddb JB |
1492 | } |
1493 | ||
7f281975 YAP |
1494 | /* setup fragmentation threshold */ |
1495 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1496 | ||
1497 | /* setup RTS threshold */ | |
1498 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1499 | ||
1500 | /* reset coverage class */ | |
1501 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1502 | ||
94f9b97b JB |
1503 | ieee80211_led_radio(local, true); |
1504 | ieee80211_mod_tpt_led_trig(local, | |
1505 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1506 | ||
f2753ddb | 1507 | /* add interfaces */ |
4b6f1dd6 JB |
1508 | sdata = rtnl_dereference(local->monitor_sdata); |
1509 | if (sdata) { | |
3c3e21e7 JB |
1510 | /* in HW restart it exists already */ |
1511 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1512 | res = drv_add_interface(local, sdata); |
1513 | if (WARN_ON(res)) { | |
1514 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
1515 | synchronize_net(); | |
1516 | kfree(sdata); | |
1517 | } | |
1518 | } | |
1519 | ||
f2753ddb JB |
1520 | list_for_each_entry(sdata, &local->interfaces, list) { |
1521 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1522 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1523 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1524 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1525 | } |
1526 | ||
55de908a | 1527 | /* add channel contexts */ |
f0dea9c7 AS |
1528 | if (local->use_chanctx) { |
1529 | mutex_lock(&local->chanctx_mtx); | |
1530 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1531 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1532 | mutex_unlock(&local->chanctx_mtx); | |
1533 | } | |
55de908a | 1534 | |
6352c87f | 1535 | list_for_each_entry(sdata, &local->interfaces, list) { |
6352c87f JB |
1536 | if (!ieee80211_sdata_running(sdata)) |
1537 | continue; | |
153a5fc4 | 1538 | ieee80211_assign_chanctx(local, sdata); |
6352c87f JB |
1539 | } |
1540 | ||
fe5f2559 | 1541 | sdata = rtnl_dereference(local->monitor_sdata); |
153a5fc4 SG |
1542 | if (sdata && ieee80211_sdata_running(sdata)) |
1543 | ieee80211_assign_chanctx(local, sdata); | |
fe5f2559 | 1544 | |
f2753ddb | 1545 | /* add STAs back */ |
34e89507 JB |
1546 | mutex_lock(&local->sta_mtx); |
1547 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1548 | enum ieee80211_sta_state state; |
f09603a2 | 1549 | |
2e8d397e AN |
1550 | if (!sta->uploaded) |
1551 | continue; | |
1552 | ||
1553 | /* AP-mode stations will be added later */ | |
1554 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1555 | continue; | |
1556 | ||
1557 | for (state = IEEE80211_STA_NOTEXIST; | |
1558 | state < sta->sta_state; state++) | |
1559 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1560 | state + 1)); | |
f2753ddb | 1561 | } |
34e89507 | 1562 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1563 | |
2683d65b | 1564 | /* reconfigure tx conf */ |
54bcbc69 JB |
1565 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1566 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1567 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1568 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1569 | !ieee80211_sdata_running(sdata)) | |
1570 | continue; | |
f6f3def3 | 1571 | |
54bcbc69 JB |
1572 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1573 | drv_conf_tx(local, sdata, i, | |
1574 | &sdata->tx_conf[i]); | |
1575 | } | |
f6f3def3 | 1576 | } |
2683d65b | 1577 | |
f2753ddb JB |
1578 | /* reconfigure hardware */ |
1579 | ieee80211_hw_config(local, ~0); | |
1580 | ||
f2753ddb | 1581 | ieee80211_configure_filter(local); |
f2753ddb JB |
1582 | |
1583 | /* Finally also reconfigure all the BSS information */ | |
1584 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1585 | u32 changed; |
1586 | ||
9607e6b6 | 1587 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1588 | continue; |
ac8dd506 JB |
1589 | |
1590 | /* common change flags for all interface types */ | |
1591 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1592 | BSS_CHANGED_ERP_PREAMBLE | | |
1593 | BSS_CHANGED_ERP_SLOT | | |
1594 | BSS_CHANGED_HT | | |
1595 | BSS_CHANGED_BASIC_RATES | | |
1596 | BSS_CHANGED_BEACON_INT | | |
1597 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1598 | BSS_CHANGED_CQM | |
55de47f6 | 1599 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1600 | BSS_CHANGED_IDLE | |
1601 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1602 | |
f2753ddb JB |
1603 | switch (sdata->vif.type) { |
1604 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1605 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1606 | BSS_CHANGED_ARP_FILTER | |
1607 | BSS_CHANGED_PS; | |
c65dd147 | 1608 | |
989c6505 AB |
1609 | /* Re-send beacon info report to the driver */ |
1610 | if (sdata->u.mgd.have_beacon) | |
1611 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1612 | |
8d61ffa5 | 1613 | sdata_lock(sdata); |
ac8dd506 | 1614 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1615 | sdata_unlock(sdata); |
ac8dd506 | 1616 | break; |
f2753ddb | 1617 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1618 | changed |= BSS_CHANGED_IBSS; |
1619 | /* fall through */ | |
f2753ddb | 1620 | case NL80211_IFTYPE_AP: |
339afbf4 | 1621 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1622 | |
1041638f | 1623 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1624 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1625 | ||
1041638f JB |
1626 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1627 | drv_start_ap(local, sdata); | |
1628 | } | |
1629 | ||
7827493b | 1630 | /* fall through */ |
f2753ddb | 1631 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1632 | if (sdata->vif.bss_conf.enable_beacon) { |
1633 | changed |= BSS_CHANGED_BEACON | | |
1634 | BSS_CHANGED_BEACON_ENABLED; | |
1635 | ieee80211_bss_info_change_notify(sdata, changed); | |
1636 | } | |
f2753ddb JB |
1637 | break; |
1638 | case NL80211_IFTYPE_WDS: | |
1639 | break; | |
1640 | case NL80211_IFTYPE_AP_VLAN: | |
1641 | case NL80211_IFTYPE_MONITOR: | |
1642 | /* ignore virtual */ | |
1643 | break; | |
98104fde | 1644 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 JB |
1645 | changed = BSS_CHANGED_IDLE; |
1646 | break; | |
f2753ddb | 1647 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1648 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1649 | case NL80211_IFTYPE_P2P_CLIENT: |
1650 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1651 | WARN_ON(1); |
1652 | break; | |
1653 | } | |
1654 | } | |
1655 | ||
8e1b23b9 ES |
1656 | ieee80211_recalc_ps(local, -1); |
1657 | ||
6e1b1b24 EP |
1658 | /* |
1659 | * The sta might be in psm against the ap (e.g. because | |
1660 | * this was the state before a hw restart), so we | |
1661 | * explicitly send a null packet in order to make sure | |
1662 | * it'll sync against the ap (and get out of psm). | |
1663 | */ | |
1664 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1665 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1666 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1667 | continue; | |
20f544ee JB |
1668 | if (!sdata->u.mgd.associated) |
1669 | continue; | |
6e1b1b24 EP |
1670 | |
1671 | ieee80211_send_nullfunc(local, sdata, 0); | |
1672 | } | |
1673 | } | |
1674 | ||
2e8d397e AN |
1675 | /* APs are now beaconing, add back stations */ |
1676 | mutex_lock(&local->sta_mtx); | |
1677 | list_for_each_entry(sta, &local->sta_list, list) { | |
1678 | enum ieee80211_sta_state state; | |
1679 | ||
1680 | if (!sta->uploaded) | |
1681 | continue; | |
1682 | ||
1683 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1684 | continue; | |
1685 | ||
1686 | for (state = IEEE80211_STA_NOTEXIST; | |
1687 | state < sta->sta_state; state++) | |
1688 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1689 | state + 1)); | |
1690 | } | |
1691 | mutex_unlock(&local->sta_mtx); | |
1692 | ||
7b21aea0 ES |
1693 | /* add back keys */ |
1694 | list_for_each_entry(sdata, &local->interfaces, list) | |
1695 | if (ieee80211_sdata_running(sdata)) | |
1696 | ieee80211_enable_keys(sdata); | |
1697 | ||
c6209488 | 1698 | wake_up: |
04800ada AN |
1699 | local->in_reconfig = false; |
1700 | barrier(); | |
1701 | ||
3c3e21e7 JB |
1702 | if (local->monitors == local->open_count && local->monitors > 0) |
1703 | ieee80211_add_virtual_monitor(local); | |
1704 | ||
2a419056 JB |
1705 | /* |
1706 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1707 | * sessions can be established after a resume. | |
1708 | * | |
1709 | * Also tear down aggregation sessions since reconfiguring | |
1710 | * them in a hardware restart scenario is not easily done | |
1711 | * right now, and the hardware will have lost information | |
1712 | * about the sessions, but we and the AP still think they | |
1713 | * are active. This is really a workaround though. | |
1714 | */ | |
74e2bd1f | 1715 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1716 | mutex_lock(&local->sta_mtx); |
1717 | ||
1718 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1719 | ieee80211_sta_tear_down_BA_sessions( |
1720 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1721 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1722 | } |
2a419056 JB |
1723 | |
1724 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1725 | } |
74e2bd1f | 1726 | |
445ea4e8 JB |
1727 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
1728 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
f2753ddb | 1729 | |
5bb644a0 JB |
1730 | /* |
1731 | * If this is for hw restart things are still running. | |
1732 | * We may want to change that later, however. | |
1733 | */ | |
8f21b0ad | 1734 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1735 | drv_restart_complete(local); |
8f21b0ad JB |
1736 | |
1737 | if (!local->suspended) | |
5bb644a0 JB |
1738 | return 0; |
1739 | ||
1740 | #ifdef CONFIG_PM | |
ceb99fe0 | 1741 | /* first set suspended false, then resuming */ |
5bb644a0 | 1742 | local->suspended = false; |
ceb99fe0 JB |
1743 | mb(); |
1744 | local->resuming = false; | |
5bb644a0 | 1745 | |
b8360ab8 JB |
1746 | list_for_each_entry(sdata, &local->interfaces, list) { |
1747 | if (!ieee80211_sdata_running(sdata)) | |
1748 | continue; | |
1749 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1750 | ieee80211_sta_restart(sdata); | |
1751 | } | |
1752 | ||
26d59535 | 1753 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1754 | #else |
1755 | WARN_ON(1); | |
1756 | #endif | |
f2753ddb JB |
1757 | return 0; |
1758 | } | |
42935eca | 1759 | |
95acac61 JB |
1760 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1761 | { | |
1762 | struct ieee80211_sub_if_data *sdata; | |
1763 | struct ieee80211_local *local; | |
1764 | struct ieee80211_key *key; | |
1765 | ||
1766 | if (WARN_ON(!vif)) | |
1767 | return; | |
1768 | ||
1769 | sdata = vif_to_sdata(vif); | |
1770 | local = sdata->local; | |
1771 | ||
1772 | if (WARN_ON(!local->resuming)) | |
1773 | return; | |
1774 | ||
1775 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1776 | return; | |
1777 | ||
1778 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1779 | ||
1780 | mutex_lock(&local->key_mtx); | |
1781 | list_for_each_entry(key, &sdata->key_list, list) | |
1782 | key->flags |= KEY_FLAG_TAINTED; | |
1783 | mutex_unlock(&local->key_mtx); | |
1784 | } | |
1785 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1786 | ||
04ecd257 | 1787 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1788 | { |
04ecd257 JB |
1789 | struct ieee80211_local *local = sdata->local; |
1790 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1791 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1792 | |
04ecd257 | 1793 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1794 | |
04ecd257 JB |
1795 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1796 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1797 | |
04ecd257 | 1798 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1799 | goto unlock; |
0f78231b | 1800 | |
04ecd257 JB |
1801 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1802 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1803 | unlock: |
04ecd257 | 1804 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1805 | } |
8e664fb3 | 1806 | |
21f659bf EP |
1807 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
1808 | { | |
1809 | struct ieee80211_local *local = sdata->local; | |
1810 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1811 | struct ieee80211_chanctx *chanctx; | |
1812 | ||
1813 | mutex_lock(&local->chanctx_mtx); | |
1814 | ||
1815 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1816 | lockdep_is_held(&local->chanctx_mtx)); | |
1817 | ||
1818 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1819 | goto unlock; | |
1820 | ||
1821 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
1822 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
1823 | unlock: | |
1824 | mutex_unlock(&local->chanctx_mtx); | |
1825 | } | |
1826 | ||
8e664fb3 JB |
1827 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
1828 | { | |
1829 | int i; | |
1830 | ||
1831 | for (i = 0; i < n_ids; i++) | |
1832 | if (ids[i] == id) | |
1833 | return true; | |
1834 | return false; | |
1835 | } | |
1836 | ||
1837 | /** | |
1838 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1839 | * | |
1840 | * @ies: the IE buffer | |
1841 | * @ielen: the length of the IE buffer | |
1842 | * @ids: an array with element IDs that are allowed before | |
1843 | * the split | |
1844 | * @n_ids: the size of the element ID array | |
1845 | * @offset: offset where to start splitting in the buffer | |
1846 | * | |
1847 | * This function splits an IE buffer by updating the @offset | |
1848 | * variable to point to the location where the buffer should be | |
1849 | * split. | |
1850 | * | |
1851 | * It assumes that the given IE buffer is well-formed, this | |
1852 | * has to be guaranteed by the caller! | |
1853 | * | |
1854 | * It also assumes that the IEs in the buffer are ordered | |
1855 | * correctly, if not the result of using this function will not | |
1856 | * be ordered correctly either, i.e. it does no reordering. | |
1857 | * | |
1858 | * The function returns the offset where the next part of the | |
1859 | * buffer starts, which may be @ielen if the entire (remainder) | |
1860 | * of the buffer should be used. | |
1861 | */ | |
1862 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1863 | const u8 *ids, int n_ids, size_t offset) | |
1864 | { | |
1865 | size_t pos = offset; | |
1866 | ||
1867 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1868 | pos += 2 + ies[pos + 1]; | |
1869 | ||
1870 | return pos; | |
1871 | } | |
1872 | ||
1873 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1874 | { | |
1875 | size_t pos = offset; | |
1876 | ||
1877 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1878 | pos += 2 + ies[pos + 1]; | |
1879 | ||
1880 | return pos; | |
1881 | } | |
615f7b9b MV |
1882 | |
1883 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1884 | int rssi_min_thold, | |
1885 | int rssi_max_thold) | |
1886 | { | |
1887 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1888 | ||
1889 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1890 | return; | |
1891 | ||
1892 | /* | |
1893 | * Scale up threshold values before storing it, as the RSSI averaging | |
1894 | * algorithm uses a scaled up value as well. Change this scaling | |
1895 | * factor if the RSSI averaging algorithm changes. | |
1896 | */ | |
1897 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1898 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1899 | } | |
1900 | ||
1901 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1902 | int rssi_min_thold, | |
1903 | int rssi_max_thold) | |
1904 | { | |
1905 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1906 | ||
1907 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
1908 | rssi_min_thold > rssi_max_thold); | |
1909 | ||
1910 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
1911 | rssi_max_thold); | |
1912 | } | |
1913 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
1914 | ||
1915 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
1916 | { | |
1917 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1918 | ||
1919 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
1920 | } | |
1921 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 1922 | |
ef96a842 | 1923 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
1924 | u16 cap) |
1925 | { | |
1926 | __le16 tmp; | |
1927 | ||
1928 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1929 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1930 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
1931 | ||
1932 | /* capability flags */ | |
1933 | tmp = cpu_to_le16(cap); | |
1934 | memcpy(pos, &tmp, sizeof(u16)); | |
1935 | pos += sizeof(u16); | |
1936 | ||
1937 | /* AMPDU parameters */ | |
ef96a842 BG |
1938 | *pos++ = ht_cap->ampdu_factor | |
1939 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
1940 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
1941 | ||
1942 | /* MCS set */ | |
ef96a842 BG |
1943 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
1944 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
1945 | |
1946 | /* extended capabilities */ | |
1947 | pos += sizeof(__le16); | |
1948 | ||
1949 | /* BF capabilities */ | |
1950 | pos += sizeof(__le32); | |
1951 | ||
1952 | /* antenna selection */ | |
1953 | pos += sizeof(u8); | |
1954 | ||
1955 | return pos; | |
1956 | } | |
1957 | ||
ba0afa2f | 1958 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 1959 | u32 cap) |
ba0afa2f MP |
1960 | { |
1961 | __le32 tmp; | |
1962 | ||
1963 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
1964 | *pos++ = sizeof(struct ieee80211_vht_cap); |
1965 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
1966 | |
1967 | /* capability flags */ | |
1968 | tmp = cpu_to_le32(cap); | |
1969 | memcpy(pos, &tmp, sizeof(u32)); | |
1970 | pos += sizeof(u32); | |
1971 | ||
1972 | /* VHT MCS set */ | |
1973 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
1974 | pos += sizeof(vht_cap->vht_mcs); | |
1975 | ||
1976 | return pos; | |
1977 | } | |
1978 | ||
074d46d1 | 1979 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 1980 | const struct cfg80211_chan_def *chandef, |
431e3154 | 1981 | u16 prot_mode) |
42e7aa77 | 1982 | { |
074d46d1 | 1983 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 1984 | /* Build HT Information */ |
074d46d1 JB |
1985 | *pos++ = WLAN_EID_HT_OPERATION; |
1986 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
1987 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
1988 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
1989 | chandef->chan->center_freq); | |
1990 | switch (chandef->width) { | |
1991 | case NL80211_CHAN_WIDTH_160: | |
1992 | case NL80211_CHAN_WIDTH_80P80: | |
1993 | case NL80211_CHAN_WIDTH_80: | |
1994 | case NL80211_CHAN_WIDTH_40: | |
1995 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
1996 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
1997 | else | |
1998 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 1999 | break; |
42e7aa77 | 2000 | default: |
074d46d1 | 2001 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2002 | break; |
2003 | } | |
aee286c2 | 2004 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2005 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2006 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2007 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2008 | |
431e3154 | 2009 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2010 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2011 | |
2012 | /* It seems that Basic MCS set and Supported MCS set | |
2013 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2014 | memset(&ht_oper->basic_set, 0, 16); |
2015 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2016 | |
074d46d1 | 2017 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2018 | } |
2019 | ||
4bf88530 | 2020 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2021 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2022 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2023 | { |
2024 | enum nl80211_channel_type channel_type; | |
2025 | ||
4bf88530 JB |
2026 | if (!ht_oper) { |
2027 | cfg80211_chandef_create(chandef, control_chan, | |
2028 | NL80211_CHAN_NO_HT); | |
2029 | return; | |
2030 | } | |
42e7aa77 | 2031 | |
074d46d1 | 2032 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2033 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2034 | channel_type = NL80211_CHAN_HT20; | |
2035 | break; | |
2036 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2037 | channel_type = NL80211_CHAN_HT40PLUS; | |
2038 | break; | |
2039 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2040 | channel_type = NL80211_CHAN_HT40MINUS; | |
2041 | break; | |
2042 | default: | |
2043 | channel_type = NL80211_CHAN_NO_HT; | |
2044 | } | |
2045 | ||
4bf88530 | 2046 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2047 | } |
2048 | ||
2103dec1 SW |
2049 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2050 | const struct ieee80211_supported_band *sband, | |
2051 | const u8 *srates, int srates_len, u32 *rates) | |
2052 | { | |
2053 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2054 | int shift = ieee80211_chandef_get_shift(chandef); | |
2055 | struct ieee80211_rate *br; | |
2056 | int brate, rate, i, j, count = 0; | |
2057 | ||
2058 | *rates = 0; | |
2059 | ||
2060 | for (i = 0; i < srates_len; i++) { | |
2061 | rate = srates[i] & 0x7f; | |
2062 | ||
2063 | for (j = 0; j < sband->n_bitrates; j++) { | |
2064 | br = &sband->bitrates[j]; | |
2065 | if ((rate_flags & br->flags) != rate_flags) | |
2066 | continue; | |
2067 | ||
2068 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2069 | if (brate == rate) { | |
2070 | *rates |= BIT(j); | |
2071 | count++; | |
2072 | break; | |
2073 | } | |
2074 | } | |
2075 | } | |
2076 | return count; | |
2077 | } | |
2078 | ||
fc8a7321 | 2079 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2080 | struct sk_buff *skb, bool need_basic, |
2081 | enum ieee80211_band band) | |
768db343 | 2082 | { |
768db343 AN |
2083 | struct ieee80211_local *local = sdata->local; |
2084 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2085 | int rate, shift; |
768db343 | 2086 | u8 i, rates, *pos; |
fc8a7321 | 2087 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2088 | u32 rate_flags; |
768db343 | 2089 | |
2103dec1 SW |
2090 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2091 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2092 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2093 | rates = 0; |
2094 | for (i = 0; i < sband->n_bitrates; i++) { | |
2095 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2096 | continue; | |
2097 | rates++; | |
2098 | } | |
768db343 AN |
2099 | if (rates > 8) |
2100 | rates = 8; | |
2101 | ||
2102 | if (skb_tailroom(skb) < rates + 2) | |
2103 | return -ENOMEM; | |
2104 | ||
2105 | pos = skb_put(skb, rates + 2); | |
2106 | *pos++ = WLAN_EID_SUPP_RATES; | |
2107 | *pos++ = rates; | |
2108 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2109 | u8 basic = 0; |
2103dec1 SW |
2110 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2111 | continue; | |
2112 | ||
657c3e0c AN |
2113 | if (need_basic && basic_rates & BIT(i)) |
2114 | basic = 0x80; | |
768db343 | 2115 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2116 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2117 | 5 * (1 << shift)); | |
2118 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2119 | } |
2120 | ||
2121 | return 0; | |
2122 | } | |
2123 | ||
fc8a7321 | 2124 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2125 | struct sk_buff *skb, bool need_basic, |
2126 | enum ieee80211_band band) | |
768db343 | 2127 | { |
768db343 AN |
2128 | struct ieee80211_local *local = sdata->local; |
2129 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2130 | int rate, shift; |
768db343 | 2131 | u8 i, exrates, *pos; |
fc8a7321 | 2132 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2133 | u32 rate_flags; |
2134 | ||
2135 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2136 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2137 | |
6b77863b | 2138 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2139 | exrates = 0; |
2140 | for (i = 0; i < sband->n_bitrates; i++) { | |
2141 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2142 | continue; | |
2143 | exrates++; | |
2144 | } | |
2145 | ||
768db343 AN |
2146 | if (exrates > 8) |
2147 | exrates -= 8; | |
2148 | else | |
2149 | exrates = 0; | |
2150 | ||
2151 | if (skb_tailroom(skb) < exrates + 2) | |
2152 | return -ENOMEM; | |
2153 | ||
2154 | if (exrates) { | |
2155 | pos = skb_put(skb, exrates + 2); | |
2156 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2157 | *pos++ = exrates; | |
2158 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2159 | u8 basic = 0; |
2103dec1 SW |
2160 | if ((rate_flags & sband->bitrates[i].flags) |
2161 | != rate_flags) | |
2162 | continue; | |
657c3e0c AN |
2163 | if (need_basic && basic_rates & BIT(i)) |
2164 | basic = 0x80; | |
2103dec1 SW |
2165 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2166 | 5 * (1 << shift)); | |
2167 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2168 | } |
2169 | } | |
2170 | return 0; | |
2171 | } | |
1dae27f8 WYG |
2172 | |
2173 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2174 | { | |
2175 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2176 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2177 | ||
be6bcabc WYG |
2178 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2179 | /* non-managed type inferfaces */ | |
2180 | return 0; | |
2181 | } | |
3a7bba64 | 2182 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2183 | } |
0d8a0a17 | 2184 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2185 | |
2186 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2187 | { | |
2188 | if (!mcs) | |
2189 | return 1; | |
2190 | ||
2191 | /* TODO: consider rx_highest */ | |
2192 | ||
2193 | if (mcs->rx_mask[3]) | |
2194 | return 4; | |
2195 | if (mcs->rx_mask[2]) | |
2196 | return 3; | |
2197 | if (mcs->rx_mask[1]) | |
2198 | return 2; | |
2199 | return 1; | |
2200 | } | |
f4bda337 TP |
2201 | |
2202 | /** | |
2203 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2204 | * @local: mac80211 hw info struct | |
2205 | * @status: RX status | |
2206 | * @mpdu_len: total MPDU length (including FCS) | |
2207 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2208 | * | |
2209 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2210 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2211 | * the timestamp to TSF at beginning of MPDU reception. | |
2212 | */ | |
2213 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2214 | struct ieee80211_rx_status *status, | |
2215 | unsigned int mpdu_len, | |
2216 | unsigned int mpdu_offset) | |
2217 | { | |
2218 | u64 ts = status->mactime; | |
2219 | struct rate_info ri; | |
2220 | u16 rate; | |
2221 | ||
2222 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2223 | return 0; | |
2224 | ||
2225 | memset(&ri, 0, sizeof(ri)); | |
2226 | ||
2227 | /* Fill cfg80211 rate info */ | |
2228 | if (status->flag & RX_FLAG_HT) { | |
2229 | ri.mcs = status->rate_idx; | |
2230 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2231 | if (status->flag & RX_FLAG_40MHZ) | |
2232 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2233 | if (status->flag & RX_FLAG_SHORT_GI) | |
2234 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2235 | } else if (status->flag & RX_FLAG_VHT) { |
2236 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2237 | ri.mcs = status->rate_idx; | |
2238 | ri.nss = status->vht_nss; | |
2239 | if (status->flag & RX_FLAG_40MHZ) | |
2240 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2241 | if (status->flag & RX_FLAG_80MHZ) | |
2242 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; | |
2243 | if (status->flag & RX_FLAG_80P80MHZ) | |
2244 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; | |
2245 | if (status->flag & RX_FLAG_160MHZ) | |
2246 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; | |
2247 | if (status->flag & RX_FLAG_SHORT_GI) | |
2248 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2249 | } else { |
2250 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2251 | int shift = 0; |
2252 | int bitrate; | |
2253 | ||
2254 | if (status->flag & RX_FLAG_10MHZ) | |
2255 | shift = 1; | |
2256 | if (status->flag & RX_FLAG_5MHZ) | |
2257 | shift = 2; | |
f4bda337 TP |
2258 | |
2259 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2260 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2261 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2262 | } |
2263 | ||
2264 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2265 | if (WARN_ONCE(!rate, |
2266 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2267 | status->flag, status->rate_idx, status->vht_nss)) | |
2268 | return 0; | |
f4bda337 TP |
2269 | |
2270 | /* rewind from end of MPDU */ | |
2271 | if (status->flag & RX_FLAG_MACTIME_END) | |
2272 | ts -= mpdu_len * 8 * 10 / rate; | |
2273 | ||
2274 | ts += mpdu_offset * 8 * 10 / rate; | |
2275 | ||
2276 | return ts; | |
2277 | } | |
164eb02d SW |
2278 | |
2279 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2280 | { | |
2281 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2282 | struct cfg80211_chan_def chandef; |
164eb02d SW |
2283 | |
2284 | mutex_lock(&local->iflist_mtx); | |
2285 | list_for_each_entry(sdata, &local->interfaces, list) { | |
2286 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); | |
2287 | ||
2288 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2289 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2290 | ieee80211_vif_release_channel(sdata); |
2291 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2292 | &chandef, |
164eb02d SW |
2293 | NL80211_RADAR_CAC_ABORTED, |
2294 | GFP_KERNEL); | |
2295 | } | |
2296 | } | |
2297 | mutex_unlock(&local->iflist_mtx); | |
2298 | } | |
2299 | ||
2300 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2301 | { | |
2302 | struct ieee80211_local *local = | |
2303 | container_of(work, struct ieee80211_local, radar_detected_work); | |
2304 | struct cfg80211_chan_def chandef; | |
2305 | ||
2306 | ieee80211_dfs_cac_cancel(local); | |
2307 | ||
2308 | if (local->use_chanctx) | |
2309 | /* currently not handled */ | |
2310 | WARN_ON(1); | |
2311 | else { | |
675a0b04 | 2312 | chandef = local->hw.conf.chandef; |
164eb02d SW |
2313 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
2314 | } | |
2315 | } | |
2316 | ||
2317 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2318 | { | |
2319 | struct ieee80211_local *local = hw_to_local(hw); | |
2320 | ||
2321 | trace_api_radar_detected(local); | |
2322 | ||
2323 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2324 | } | |
2325 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2326 | |
2327 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2328 | { | |
2329 | u32 ret; | |
2330 | int tmp; | |
2331 | ||
2332 | switch (c->width) { | |
2333 | case NL80211_CHAN_WIDTH_20: | |
2334 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2335 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2336 | break; | |
2337 | case NL80211_CHAN_WIDTH_40: | |
2338 | c->width = NL80211_CHAN_WIDTH_20; | |
2339 | c->center_freq1 = c->chan->center_freq; | |
2340 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2341 | IEEE80211_STA_DISABLE_VHT; | |
2342 | break; | |
2343 | case NL80211_CHAN_WIDTH_80: | |
2344 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2345 | /* n_P40 */ | |
2346 | tmp /= 2; | |
2347 | /* freq_P40 */ | |
2348 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2349 | c->width = NL80211_CHAN_WIDTH_40; | |
2350 | ret = IEEE80211_STA_DISABLE_VHT; | |
2351 | break; | |
2352 | case NL80211_CHAN_WIDTH_80P80: | |
2353 | c->center_freq2 = 0; | |
2354 | c->width = NL80211_CHAN_WIDTH_80; | |
2355 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2356 | IEEE80211_STA_DISABLE_160MHZ; | |
2357 | break; | |
2358 | case NL80211_CHAN_WIDTH_160: | |
2359 | /* n_P20 */ | |
2360 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2361 | /* n_P80 */ | |
2362 | tmp /= 4; | |
2363 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2364 | c->width = NL80211_CHAN_WIDTH_80; | |
2365 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2366 | IEEE80211_STA_DISABLE_160MHZ; | |
2367 | break; | |
2368 | default: | |
2369 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2370 | WARN_ON_ONCE(1); | |
2371 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2372 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2373 | break; | |
2374 | case NL80211_CHAN_WIDTH_5: | |
2375 | case NL80211_CHAN_WIDTH_10: | |
2376 | WARN_ON_ONCE(1); | |
2377 | /* keep c->width */ | |
2378 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2379 | break; | |
2380 | } | |
2381 | ||
2382 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2383 | ||
2384 | return ret; | |
2385 | } | |
687da132 EG |
2386 | |
2387 | /* | |
2388 | * Returns true if smps_mode_new is strictly more restrictive than | |
2389 | * smps_mode_old. | |
2390 | */ | |
2391 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2392 | enum ieee80211_smps_mode smps_mode_new) | |
2393 | { | |
2394 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2395 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2396 | return false; | |
2397 | ||
2398 | switch (smps_mode_old) { | |
2399 | case IEEE80211_SMPS_STATIC: | |
2400 | return false; | |
2401 | case IEEE80211_SMPS_DYNAMIC: | |
2402 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2403 | case IEEE80211_SMPS_OFF: | |
2404 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2405 | default: | |
2406 | WARN_ON(1); | |
2407 | } | |
2408 | ||
2409 | return false; | |
2410 | } | |
c6da674a CYY |
2411 | |
2412 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2413 | struct cfg80211_csa_settings *csa_settings) | |
2414 | { | |
2415 | struct sk_buff *skb; | |
2416 | struct ieee80211_mgmt *mgmt; | |
2417 | struct ieee80211_local *local = sdata->local; | |
2418 | int freq; | |
2419 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2420 | sizeof(mgmt->u.action.u.chan_switch); | |
2421 | u8 *pos; | |
2422 | ||
2423 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2424 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2425 | return -EOPNOTSUPP; | |
2426 | ||
2427 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2428 | 5 + /* channel switch announcement element */ | |
2429 | 3 + /* secondary channel offset element */ | |
2430 | 8); /* mesh channel switch parameters element */ | |
2431 | if (!skb) | |
2432 | return -ENOMEM; | |
2433 | ||
2434 | skb_reserve(skb, local->tx_headroom); | |
2435 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2436 | memset(mgmt, 0, hdr_len); | |
2437 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2438 | IEEE80211_STYPE_ACTION); | |
2439 | ||
2440 | eth_broadcast_addr(mgmt->da); | |
2441 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2442 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2443 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2444 | } else { | |
2445 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2446 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2447 | } | |
2448 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2449 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2450 | pos = skb_put(skb, 5); | |
2451 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2452 | *pos++ = 3; /* IE length */ | |
2453 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2454 | freq = csa_settings->chandef.chan->center_freq; | |
2455 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2456 | *pos++ = csa_settings->count; /* count */ | |
2457 | ||
2458 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2459 | enum nl80211_channel_type ch_type; | |
2460 | ||
2461 | skb_put(skb, 3); | |
2462 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2463 | *pos++ = 1; /* IE length */ | |
2464 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2465 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2466 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2467 | else | |
2468 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2469 | } | |
2470 | ||
2471 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2472 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2473 | |
2474 | skb_put(skb, 8); | |
2475 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2476 | *pos++ = 6; /* IE length */ | |
2477 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2478 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2479 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2480 | *pos++ |= csa_settings->block_tx ? | |
2481 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2482 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2483 | pos += 2; | |
2484 | if (!ifmsh->pre_value) | |
2485 | ifmsh->pre_value = 1; | |
2486 | else | |
2487 | ifmsh->pre_value++; | |
ca91dc97 | 2488 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a CYY |
2489 | pos += 2; |
2490 | ifmsh->chsw_init = true; | |
2491 | } | |
2492 | ||
2493 | ieee80211_tx_skb(sdata, skb); | |
2494 | return 0; | |
2495 | } | |
2475b1cc MS |
2496 | |
2497 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2498 | { | |
2499 | return !(cs == NULL || cs->cipher == 0 || | |
2500 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2501 | cs->hdr_len <= cs->key_idx_off || | |
2502 | cs->key_idx_shift > 7 || | |
2503 | cs->key_idx_mask == 0); | |
2504 | } | |
2505 | ||
2506 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2507 | { | |
2508 | int i; | |
2509 | ||
2510 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2511 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2512 | ||
2513 | for (i = 0; i < n; i++) | |
2514 | if (!ieee80211_cs_valid(&cs[i])) | |
2515 | return false; | |
2516 | ||
2517 | return true; | |
2518 | } | |
2519 | ||
2520 | const struct ieee80211_cipher_scheme * | |
2521 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2522 | enum nl80211_iftype iftype) | |
2523 | { | |
2524 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2525 | int n = local->hw.n_cipher_schemes; | |
2526 | int i; | |
2527 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2528 | ||
2529 | for (i = 0; i < n; i++) { | |
2530 | if (l[i].cipher == cipher) { | |
2531 | cs = &l[i]; | |
2532 | break; | |
2533 | } | |
2534 | } | |
2535 | ||
2536 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2537 | return NULL; | |
2538 | ||
2539 | return cs; | |
2540 | } | |
2541 | ||
2542 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2543 | struct cfg80211_crypto_settings *crypto, | |
2544 | enum nl80211_iftype iftype) | |
2545 | { | |
2546 | const struct ieee80211_cipher_scheme *cs; | |
2547 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2548 | int i; | |
2549 | ||
2550 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2551 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2552 | iftype); | |
2553 | ||
2554 | if (cs && headroom < cs->hdr_len) | |
2555 | headroom = cs->hdr_len; | |
2556 | } | |
2557 | ||
2558 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2559 | if (cs && headroom < cs->hdr_len) | |
2560 | headroom = cs->hdr_len; | |
2561 | ||
2562 | return headroom; | |
2563 | } |