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Commit | Line | Data |
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c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
d98ad83e | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
c2d1560a JB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * utilities for mac80211 | |
13 | */ | |
14 | ||
15 | #include <net/mac80211.h> | |
16 | #include <linux/netdevice.h> | |
bc3b2d7f | 17 | #include <linux/export.h> |
c2d1560a JB |
18 | #include <linux/types.h> |
19 | #include <linux/slab.h> | |
20 | #include <linux/skbuff.h> | |
21 | #include <linux/etherdevice.h> | |
22 | #include <linux/if_arp.h> | |
c2d1560a | 23 | #include <linux/bitmap.h> |
dd76986b | 24 | #include <linux/crc32.h> |
881d966b | 25 | #include <net/net_namespace.h> |
c2d1560a | 26 | #include <net/cfg80211.h> |
dabeb344 | 27 | #include <net/rtnetlink.h> |
c2d1560a JB |
28 | |
29 | #include "ieee80211_i.h" | |
24487981 | 30 | #include "driver-ops.h" |
2c8dccc7 | 31 | #include "rate.h" |
ee385855 | 32 | #include "mesh.h" |
c2d1560a | 33 | #include "wme.h" |
f2753ddb | 34 | #include "led.h" |
fffd0934 | 35 | #include "wep.h" |
c2d1560a JB |
36 | |
37 | /* privid for wiphys to determine whether they belong to us or not */ | |
8a47cea7 | 38 | const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; |
c2d1560a | 39 | |
9a95371a LR |
40 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
41 | { | |
42 | struct ieee80211_local *local; | |
43 | BUG_ON(!wiphy); | |
44 | ||
45 | local = wiphy_priv(wiphy); | |
46 | return &local->hw; | |
47 | } | |
48 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 49 | |
71364716 | 50 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
05c914fe | 51 | enum nl80211_iftype type) |
c2d1560a | 52 | { |
a494bb1c | 53 | __le16 fc = hdr->frame_control; |
c2d1560a | 54 | |
98f0b0a3 RR |
55 | /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ |
56 | if (len < 16) | |
c2d1560a JB |
57 | return NULL; |
58 | ||
a494bb1c | 59 | if (ieee80211_is_data(fc)) { |
98f0b0a3 RR |
60 | if (len < 24) /* drop incorrect hdr len (data) */ |
61 | return NULL; | |
a494bb1c HH |
62 | |
63 | if (ieee80211_has_a4(fc)) | |
c2d1560a | 64 | return NULL; |
a494bb1c HH |
65 | if (ieee80211_has_tods(fc)) |
66 | return hdr->addr1; | |
67 | if (ieee80211_has_fromds(fc)) | |
c2d1560a | 68 | return hdr->addr2; |
a494bb1c HH |
69 | |
70 | return hdr->addr3; | |
71 | } | |
72 | ||
73 | if (ieee80211_is_mgmt(fc)) { | |
98f0b0a3 RR |
74 | if (len < 24) /* drop incorrect hdr len (mgmt) */ |
75 | return NULL; | |
c2d1560a | 76 | return hdr->addr3; |
a494bb1c HH |
77 | } |
78 | ||
79 | if (ieee80211_is_ctl(fc)) { | |
f359d3fe | 80 | if (ieee80211_is_pspoll(fc)) |
c2d1560a | 81 | return hdr->addr1; |
a494bb1c HH |
82 | |
83 | if (ieee80211_is_back_req(fc)) { | |
71364716 | 84 | switch (type) { |
05c914fe | 85 | case NL80211_IFTYPE_STATION: |
71364716 | 86 | return hdr->addr2; |
05c914fe JB |
87 | case NL80211_IFTYPE_AP: |
88 | case NL80211_IFTYPE_AP_VLAN: | |
71364716 RR |
89 | return hdr->addr1; |
90 | default: | |
a494bb1c | 91 | break; /* fall through to the return */ |
71364716 RR |
92 | } |
93 | } | |
c2d1560a JB |
94 | } |
95 | ||
96 | return NULL; | |
97 | } | |
98 | ||
5cf121c3 | 99 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 100 | { |
252b86c4 | 101 | struct sk_buff *skb; |
2de8e0d9 JB |
102 | struct ieee80211_hdr *hdr; |
103 | ||
252b86c4 | 104 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
105 | hdr = (struct ieee80211_hdr *) skb->data; |
106 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 107 | } |
c2d1560a JB |
108 | } |
109 | ||
4ee73f33 | 110 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
438b61b7 SW |
111 | int rate, int erp, int short_preamble, |
112 | int shift) | |
c2d1560a JB |
113 | { |
114 | int dur; | |
115 | ||
116 | /* calculate duration (in microseconds, rounded up to next higher | |
117 | * integer if it includes a fractional microsecond) to send frame of | |
118 | * len bytes (does not include FCS) at the given rate. Duration will | |
119 | * also include SIFS. | |
120 | * | |
121 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
122 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
123 | * |
124 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
125 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
126 | */ |
127 | ||
4ee73f33 | 128 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
129 | /* |
130 | * OFDM: | |
131 | * | |
132 | * N_DBPS = DATARATE x 4 | |
133 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
134 | * (16 = SIGNAL time, 6 = tail bits) | |
135 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
136 | * | |
137 | * T_SYM = 4 usec | |
438b61b7 | 138 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
139 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
140 | * signal ext = 6 usec | |
141 | */ | |
c2d1560a | 142 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
143 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
144 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
145 | |
146 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
147 | * * times 4 for 5 MHz | |
148 | * * times 2 for 10 MHz | |
149 | */ | |
150 | dur *= 1 << shift; | |
2103dec1 SW |
151 | |
152 | /* rates should already consider the channel bandwidth, | |
153 | * don't apply divisor again. | |
154 | */ | |
155 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
156 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
157 | } else { |
158 | /* | |
159 | * 802.11b or 802.11g with 802.11b compatibility: | |
160 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
161 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
162 | * | |
163 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
164 | * aSIFSTime = 10 usec | |
165 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
166 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
167 | */ | |
168 | dur = 10; /* aSIFSTime = 10 usec */ | |
169 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
170 | ||
171 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
172 | } | |
173 | ||
174 | return dur; | |
175 | } | |
176 | ||
177 | /* Exported duration function for driver use */ | |
32bfd35d JB |
178 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
179 | struct ieee80211_vif *vif, | |
4ee73f33 | 180 | enum ieee80211_band band, |
8318d78a JB |
181 | size_t frame_len, |
182 | struct ieee80211_rate *rate) | |
c2d1560a | 183 | { |
25d834e1 | 184 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 185 | u16 dur; |
438b61b7 | 186 | int erp, shift = 0; |
25d834e1 | 187 | bool short_preamble = false; |
c2d1560a | 188 | |
8318d78a | 189 | erp = 0; |
25d834e1 JB |
190 | if (vif) { |
191 | sdata = vif_to_sdata(vif); | |
bda3933a | 192 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
193 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
194 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 195 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 196 | } |
8318d78a | 197 | |
4ee73f33 | 198 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 199 | short_preamble, shift); |
c2d1560a JB |
200 | |
201 | return cpu_to_le16(dur); | |
202 | } | |
203 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
204 | ||
32bfd35d JB |
205 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
206 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 207 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
208 | { |
209 | struct ieee80211_local *local = hw_to_local(hw); | |
210 | struct ieee80211_rate *rate; | |
25d834e1 | 211 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 212 | bool short_preamble; |
2103dec1 | 213 | int erp, shift = 0, bitrate; |
c2d1560a | 214 | u16 dur; |
2e92e6f2 JB |
215 | struct ieee80211_supported_band *sband; |
216 | ||
4ee73f33 | 217 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 218 | |
25d834e1 | 219 | short_preamble = false; |
7e9ed188 | 220 | |
e039fa4a | 221 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
222 | |
223 | erp = 0; | |
25d834e1 JB |
224 | if (vif) { |
225 | sdata = vif_to_sdata(vif); | |
bda3933a | 226 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
227 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
228 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 229 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 230 | } |
c2d1560a | 231 | |
2103dec1 SW |
232 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
233 | ||
c2d1560a | 234 | /* CTS duration */ |
2103dec1 | 235 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 236 | erp, short_preamble, shift); |
c2d1560a | 237 | /* Data frame duration */ |
2103dec1 | 238 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 239 | erp, short_preamble, shift); |
c2d1560a | 240 | /* ACK duration */ |
2103dec1 | 241 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 242 | erp, short_preamble, shift); |
c2d1560a JB |
243 | |
244 | return cpu_to_le16(dur); | |
245 | } | |
246 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
247 | ||
32bfd35d JB |
248 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
249 | struct ieee80211_vif *vif, | |
c2d1560a | 250 | size_t frame_len, |
e039fa4a | 251 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
252 | { |
253 | struct ieee80211_local *local = hw_to_local(hw); | |
254 | struct ieee80211_rate *rate; | |
25d834e1 | 255 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 256 | bool short_preamble; |
2103dec1 | 257 | int erp, shift = 0, bitrate; |
c2d1560a | 258 | u16 dur; |
2e92e6f2 JB |
259 | struct ieee80211_supported_band *sband; |
260 | ||
4ee73f33 | 261 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 262 | |
25d834e1 | 263 | short_preamble = false; |
7e9ed188 | 264 | |
e039fa4a | 265 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 266 | erp = 0; |
25d834e1 JB |
267 | if (vif) { |
268 | sdata = vif_to_sdata(vif); | |
bda3933a | 269 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
270 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
271 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 272 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 273 | } |
c2d1560a | 274 | |
2103dec1 SW |
275 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
276 | ||
c2d1560a | 277 | /* Data frame duration */ |
2103dec1 | 278 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 279 | erp, short_preamble, shift); |
e039fa4a | 280 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 281 | /* ACK duration */ |
2103dec1 | 282 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 283 | erp, short_preamble, shift); |
c2d1560a JB |
284 | } |
285 | ||
286 | return cpu_to_le16(dur); | |
287 | } | |
288 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
289 | ||
3a25a8c8 JB |
290 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
291 | { | |
292 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
293 | int n_acs = IEEE80211_NUM_ACS; |
294 | ||
295 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
296 | n_acs = 1; | |
3a25a8c8 JB |
297 | |
298 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
299 | int ac; | |
300 | ||
f142c6b9 JB |
301 | if (!sdata->dev) |
302 | continue; | |
303 | ||
3a25a8c8 JB |
304 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
305 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
306 | continue; | |
307 | ||
a6f38ac3 | 308 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
309 | int ac_queue = sdata->vif.hw_queue[ac]; |
310 | ||
311 | if (ac_queue == queue || | |
312 | (sdata->vif.cab_queue == queue && | |
313 | local->queue_stop_reasons[ac_queue] == 0 && | |
314 | skb_queue_empty(&local->pending[ac_queue]))) | |
315 | netif_wake_subqueue(sdata->dev, ac); | |
316 | } | |
317 | } | |
318 | } | |
319 | ||
ce7c9111 | 320 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
321 | enum queue_stop_reason reason, |
322 | bool refcounted) | |
c2d1560a JB |
323 | { |
324 | struct ieee80211_local *local = hw_to_local(hw); | |
325 | ||
b5878a2d JB |
326 | trace_wake_queue(local, queue, reason); |
327 | ||
e4e72fb4 JB |
328 | if (WARN_ON(queue >= hw->queues)) |
329 | return; | |
ce7c9111 | 330 | |
ada15125 JB |
331 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
332 | return; | |
333 | ||
cca07b00 LC |
334 | if (!refcounted) |
335 | local->q_stop_reasons[queue][reason] = 0; | |
336 | else | |
337 | local->q_stop_reasons[queue][reason]--; | |
338 | ||
339 | if (local->q_stop_reasons[queue][reason] == 0) | |
340 | __clear_bit(reason, &local->queue_stop_reasons[queue]); | |
96f5e66e JB |
341 | |
342 | if (local->queue_stop_reasons[queue] != 0) | |
343 | /* someone still has this queue stopped */ | |
344 | return; | |
345 | ||
7236fe29 JB |
346 | if (skb_queue_empty(&local->pending[queue])) { |
347 | rcu_read_lock(); | |
3a25a8c8 | 348 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
349 | rcu_read_unlock(); |
350 | } else | |
3b8d81e0 | 351 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 352 | } |
ce7c9111 | 353 | |
96f5e66e | 354 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
355 | enum queue_stop_reason reason, |
356 | bool refcounted) | |
ce7c9111 KV |
357 | { |
358 | struct ieee80211_local *local = hw_to_local(hw); | |
359 | unsigned long flags; | |
360 | ||
361 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 362 | __ieee80211_wake_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
363 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
364 | } | |
365 | ||
366 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
367 | { | |
368 | ieee80211_wake_queue_by_reason(hw, queue, | |
cca07b00 LC |
369 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
370 | false); | |
ce7c9111 | 371 | } |
c2d1560a JB |
372 | EXPORT_SYMBOL(ieee80211_wake_queue); |
373 | ||
ce7c9111 | 374 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
375 | enum queue_stop_reason reason, |
376 | bool refcounted) | |
c2d1560a JB |
377 | { |
378 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 379 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 380 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 381 | |
b5878a2d JB |
382 | trace_stop_queue(local, queue, reason); |
383 | ||
e4e72fb4 JB |
384 | if (WARN_ON(queue >= hw->queues)) |
385 | return; | |
96f5e66e | 386 | |
cca07b00 LC |
387 | if (!refcounted) |
388 | local->q_stop_reasons[queue][reason] = 1; | |
389 | else | |
390 | local->q_stop_reasons[queue][reason]++; | |
ada15125 | 391 | |
cca07b00 LC |
392 | if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
393 | return; | |
cf0277e7 | 394 | |
a6f38ac3 JB |
395 | if (local->hw.queues < IEEE80211_NUM_ACS) |
396 | n_acs = 1; | |
397 | ||
cf0277e7 | 398 | rcu_read_lock(); |
3a25a8c8 JB |
399 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
400 | int ac; | |
401 | ||
f142c6b9 JB |
402 | if (!sdata->dev) |
403 | continue; | |
404 | ||
a6f38ac3 | 405 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
406 | if (sdata->vif.hw_queue[ac] == queue || |
407 | sdata->vif.cab_queue == queue) | |
408 | netif_stop_subqueue(sdata->dev, ac); | |
409 | } | |
410 | } | |
cf0277e7 | 411 | rcu_read_unlock(); |
c2d1560a | 412 | } |
ce7c9111 | 413 | |
96f5e66e | 414 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
415 | enum queue_stop_reason reason, |
416 | bool refcounted) | |
ce7c9111 KV |
417 | { |
418 | struct ieee80211_local *local = hw_to_local(hw); | |
419 | unsigned long flags; | |
420 | ||
421 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 422 | __ieee80211_stop_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
423 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
424 | } | |
425 | ||
426 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
427 | { | |
428 | ieee80211_stop_queue_by_reason(hw, queue, | |
cca07b00 LC |
429 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
430 | false); | |
ce7c9111 | 431 | } |
c2d1560a JB |
432 | EXPORT_SYMBOL(ieee80211_stop_queue); |
433 | ||
8f77f384 JB |
434 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
435 | struct sk_buff *skb) | |
436 | { | |
437 | struct ieee80211_hw *hw = &local->hw; | |
438 | unsigned long flags; | |
a7bc376c | 439 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 440 | int queue = info->hw_queue; |
a7bc376c JB |
441 | |
442 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 443 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
444 | return; |
445 | } | |
8f77f384 JB |
446 | |
447 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 LC |
448 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
449 | false); | |
3b8d81e0 | 450 | __skb_queue_tail(&local->pending[queue], skb); |
cca07b00 LC |
451 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
452 | false); | |
8f77f384 JB |
453 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
454 | } | |
455 | ||
e3685e03 JB |
456 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
457 | struct sk_buff_head *skbs) | |
8f77f384 JB |
458 | { |
459 | struct ieee80211_hw *hw = &local->hw; | |
460 | struct sk_buff *skb; | |
461 | unsigned long flags; | |
b0b97a8a | 462 | int queue, i; |
8f77f384 JB |
463 | |
464 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 465 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
466 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
467 | ||
468 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 469 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
470 | continue; |
471 | } | |
472 | ||
3a25a8c8 | 473 | queue = info->hw_queue; |
4644ae89 JB |
474 | |
475 | __ieee80211_stop_queue(hw, queue, | |
cca07b00 LC |
476 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
477 | false); | |
4644ae89 | 478 | |
3b8d81e0 | 479 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
480 | } |
481 | ||
3b8d81e0 | 482 | for (i = 0; i < hw->queues; i++) |
8f77f384 | 483 | __ieee80211_wake_queue(hw, i, |
cca07b00 LC |
484 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
485 | false); | |
8f77f384 | 486 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
487 | } |
488 | ||
ce7c9111 | 489 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 490 | unsigned long queues, |
cca07b00 LC |
491 | enum queue_stop_reason reason, |
492 | bool refcounted) | |
c2d1560a | 493 | { |
ce7c9111 KV |
494 | struct ieee80211_local *local = hw_to_local(hw); |
495 | unsigned long flags; | |
c2d1560a JB |
496 | int i; |
497 | ||
ce7c9111 KV |
498 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
499 | ||
445ea4e8 | 500 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 501 | __ieee80211_stop_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
502 | |
503 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
504 | } | |
505 | ||
506 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
507 | { | |
445ea4e8 | 508 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
509 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
510 | false); | |
c2d1560a JB |
511 | } |
512 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
513 | ||
92ab8535 TW |
514 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
515 | { | |
516 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
517 | unsigned long flags; |
518 | int ret; | |
96f5e66e | 519 | |
e4e72fb4 JB |
520 | if (WARN_ON(queue >= hw->queues)) |
521 | return true; | |
96f5e66e | 522 | |
3b8d81e0 | 523 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
524 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
525 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
526 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
527 | return ret; | |
92ab8535 TW |
528 | } |
529 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
530 | ||
ce7c9111 | 531 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 532 | unsigned long queues, |
cca07b00 LC |
533 | enum queue_stop_reason reason, |
534 | bool refcounted) | |
c2d1560a | 535 | { |
ce7c9111 KV |
536 | struct ieee80211_local *local = hw_to_local(hw); |
537 | unsigned long flags; | |
c2d1560a JB |
538 | int i; |
539 | ||
ce7c9111 KV |
540 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
541 | ||
445ea4e8 | 542 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 543 | __ieee80211_wake_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
544 | |
545 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
546 | } | |
547 | ||
548 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
549 | { | |
445ea4e8 | 550 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
551 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
552 | false); | |
c2d1560a JB |
553 | } |
554 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 555 | |
26da23b6 LC |
556 | static unsigned int |
557 | ieee80211_get_vif_queues(struct ieee80211_local *local, | |
558 | struct ieee80211_sub_if_data *sdata) | |
39ecc01d | 559 | { |
26da23b6 | 560 | unsigned int queues; |
39ecc01d JB |
561 | |
562 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
563 | int ac; | |
564 | ||
565 | queues = 0; | |
566 | ||
567 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
568 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
569 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
570 | queues |= BIT(sdata->vif.cab_queue); | |
571 | } else { | |
572 | /* all queues */ | |
573 | queues = BIT(local->hw.queues) - 1; | |
574 | } | |
575 | ||
26da23b6 LC |
576 | return queues; |
577 | } | |
578 | ||
579 | void ieee80211_flush_queues(struct ieee80211_local *local, | |
580 | struct ieee80211_sub_if_data *sdata) | |
581 | { | |
582 | unsigned int queues; | |
583 | ||
584 | if (!local->ops->flush) | |
585 | return; | |
586 | ||
587 | queues = ieee80211_get_vif_queues(local, sdata); | |
588 | ||
59f48fe2 | 589 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
590 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
591 | false); | |
445ea4e8 | 592 | |
77be2c54 | 593 | drv_flush(local, sdata, queues, false); |
445ea4e8 | 594 | |
59f48fe2 | 595 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
596 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
597 | false); | |
39ecc01d JB |
598 | } |
599 | ||
26da23b6 LC |
600 | void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
601 | struct ieee80211_sub_if_data *sdata, | |
602 | enum queue_stop_reason reason) | |
603 | { | |
604 | ieee80211_stop_queues_by_reason(&local->hw, | |
605 | ieee80211_get_vif_queues(local, sdata), | |
606 | reason, true); | |
607 | } | |
608 | ||
609 | void ieee80211_wake_vif_queues(struct ieee80211_local *local, | |
610 | struct ieee80211_sub_if_data *sdata, | |
611 | enum queue_stop_reason reason) | |
612 | { | |
613 | ieee80211_wake_queues_by_reason(&local->hw, | |
614 | ieee80211_get_vif_queues(local, sdata), | |
615 | reason, true); | |
616 | } | |
617 | ||
c7c71066 JB |
618 | static void __iterate_active_interfaces(struct ieee80211_local *local, |
619 | u32 iter_flags, | |
620 | void (*iterator)(void *data, u8 *mac, | |
621 | struct ieee80211_vif *vif), | |
622 | void *data) | |
dabeb344 | 623 | { |
dabeb344 JB |
624 | struct ieee80211_sub_if_data *sdata; |
625 | ||
c7c71066 | 626 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 627 | switch (sdata->vif.type) { |
05c914fe | 628 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
629 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
630 | continue; | |
631 | break; | |
05c914fe | 632 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 633 | continue; |
2ca27bcf | 634 | default: |
2f561feb ID |
635 | break; |
636 | } | |
8b2c9824 JB |
637 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
638 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
639 | continue; | |
9607e6b6 | 640 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 641 | iterator(data, sdata->vif.addr, |
2f561feb ID |
642 | &sdata->vif); |
643 | } | |
644 | ||
c7c71066 JB |
645 | sdata = rcu_dereference_check(local->monitor_sdata, |
646 | lockdep_is_held(&local->iflist_mtx) || | |
647 | lockdep_rtnl_is_held()); | |
8b2c9824 JB |
648 | if (sdata && |
649 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
650 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b | 651 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 652 | } |
685fb72b | 653 | |
c7c71066 JB |
654 | void ieee80211_iterate_active_interfaces( |
655 | struct ieee80211_hw *hw, u32 iter_flags, | |
656 | void (*iterator)(void *data, u8 *mac, | |
657 | struct ieee80211_vif *vif), | |
658 | void *data) | |
659 | { | |
660 | struct ieee80211_local *local = hw_to_local(hw); | |
661 | ||
662 | mutex_lock(&local->iflist_mtx); | |
663 | __iterate_active_interfaces(local, iter_flags, iterator, data); | |
c771c9d8 | 664 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
665 | } |
666 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
667 | ||
668 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 669 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
670 | void (*iterator)(void *data, u8 *mac, |
671 | struct ieee80211_vif *vif), | |
672 | void *data) | |
673 | { | |
674 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 675 | |
e38bad47 | 676 | rcu_read_lock(); |
c7c71066 JB |
677 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
678 | rcu_read_unlock(); | |
679 | } | |
680 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 681 | |
c7c71066 JB |
682 | void ieee80211_iterate_active_interfaces_rtnl( |
683 | struct ieee80211_hw *hw, u32 iter_flags, | |
684 | void (*iterator)(void *data, u8 *mac, | |
685 | struct ieee80211_vif *vif), | |
686 | void *data) | |
687 | { | |
688 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 689 | |
c7c71066 | 690 | ASSERT_RTNL(); |
685fb72b | 691 | |
c7c71066 | 692 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
dabeb344 | 693 | } |
c7c71066 | 694 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 695 | |
0fc1e049 AN |
696 | static void __iterate_stations(struct ieee80211_local *local, |
697 | void (*iterator)(void *data, | |
698 | struct ieee80211_sta *sta), | |
699 | void *data) | |
700 | { | |
701 | struct sta_info *sta; | |
702 | ||
703 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
704 | if (!sta->uploaded) | |
705 | continue; | |
706 | ||
707 | iterator(data, &sta->sta); | |
708 | } | |
709 | } | |
710 | ||
711 | void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, | |
712 | void (*iterator)(void *data, | |
713 | struct ieee80211_sta *sta), | |
714 | void *data) | |
715 | { | |
716 | struct ieee80211_local *local = hw_to_local(hw); | |
717 | ||
718 | rcu_read_lock(); | |
719 | __iterate_stations(local, iterator, data); | |
720 | rcu_read_unlock(); | |
721 | } | |
722 | EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); | |
723 | ||
ad7e718c JB |
724 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
725 | { | |
726 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
727 | ||
728 | if (!ieee80211_sdata_running(sdata) || | |
729 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
730 | return NULL; | |
731 | return &sdata->vif; | |
732 | } | |
733 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
734 | ||
42935eca LR |
735 | /* |
736 | * Nothing should have been stuffed into the workqueue during | |
737 | * the suspend->resume cycle. If this WARN is seen then there | |
738 | * is a bug with either the driver suspend or something in | |
739 | * mac80211 stuffing into the workqueue which we haven't yet | |
740 | * cleared during mac80211's suspend cycle. | |
741 | */ | |
742 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
743 | { | |
ceb99fe0 JB |
744 | if (WARN(local->suspended && !local->resuming, |
745 | "queueing ieee80211 work while going to suspend\n")) | |
746 | return false; | |
42935eca LR |
747 | |
748 | return true; | |
749 | } | |
750 | ||
751 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
752 | { | |
753 | struct ieee80211_local *local = hw_to_local(hw); | |
754 | ||
755 | if (!ieee80211_can_queue_work(local)) | |
756 | return; | |
757 | ||
758 | queue_work(local->workqueue, work); | |
759 | } | |
760 | EXPORT_SYMBOL(ieee80211_queue_work); | |
761 | ||
762 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
763 | struct delayed_work *dwork, | |
764 | unsigned long delay) | |
765 | { | |
766 | struct ieee80211_local *local = hw_to_local(hw); | |
767 | ||
768 | if (!ieee80211_can_queue_work(local)) | |
769 | return; | |
770 | ||
771 | queue_delayed_work(local->workqueue, dwork, delay); | |
772 | } | |
773 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
774 | ||
35d865af | 775 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
776 | struct ieee802_11_elems *elems, |
777 | u64 filter, u32 crc) | |
778 | { | |
779 | size_t left = len; | |
35d865af | 780 | const u8 *pos = start; |
dd76986b | 781 | bool calc_crc = filter != 0; |
fcff4f10 | 782 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 783 | const u8 *ie; |
dd76986b | 784 | |
fcff4f10 | 785 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
786 | memset(elems, 0, sizeof(*elems)); |
787 | elems->ie_start = start; | |
788 | elems->total_len = len; | |
789 | ||
790 | while (left >= 2) { | |
791 | u8 id, elen; | |
fcff4f10 | 792 | bool elem_parse_failed; |
dd76986b JB |
793 | |
794 | id = *pos++; | |
795 | elen = *pos++; | |
796 | left -= 2; | |
797 | ||
fcff4f10 PS |
798 | if (elen > left) { |
799 | elems->parse_error = true; | |
dd76986b | 800 | break; |
fcff4f10 PS |
801 | } |
802 | ||
9690fb16 JB |
803 | switch (id) { |
804 | case WLAN_EID_SSID: | |
805 | case WLAN_EID_SUPP_RATES: | |
806 | case WLAN_EID_FH_PARAMS: | |
807 | case WLAN_EID_DS_PARAMS: | |
808 | case WLAN_EID_CF_PARAMS: | |
809 | case WLAN_EID_TIM: | |
810 | case WLAN_EID_IBSS_PARAMS: | |
811 | case WLAN_EID_CHALLENGE: | |
812 | case WLAN_EID_RSN: | |
813 | case WLAN_EID_ERP_INFO: | |
814 | case WLAN_EID_EXT_SUPP_RATES: | |
815 | case WLAN_EID_HT_CAPABILITY: | |
816 | case WLAN_EID_HT_OPERATION: | |
817 | case WLAN_EID_VHT_CAPABILITY: | |
818 | case WLAN_EID_VHT_OPERATION: | |
819 | case WLAN_EID_MESH_ID: | |
820 | case WLAN_EID_MESH_CONFIG: | |
821 | case WLAN_EID_PEER_MGMT: | |
822 | case WLAN_EID_PREQ: | |
823 | case WLAN_EID_PREP: | |
824 | case WLAN_EID_PERR: | |
825 | case WLAN_EID_RANN: | |
826 | case WLAN_EID_CHANNEL_SWITCH: | |
827 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
828 | case WLAN_EID_COUNTRY: | |
829 | case WLAN_EID_PWR_CONSTRAINT: | |
830 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 831 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 832 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 833 | case WLAN_EID_CHAN_SWITCH_PARAM: |
b2e506bf JB |
834 | /* |
835 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
836 | * that if the content gets bigger it might be needed more than once | |
837 | */ | |
9690fb16 JB |
838 | if (test_bit(id, seen_elems)) { |
839 | elems->parse_error = true; | |
840 | left -= elen; | |
841 | pos += elen; | |
842 | continue; | |
843 | } | |
844 | break; | |
fcff4f10 | 845 | } |
dd76986b JB |
846 | |
847 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
848 | crc = crc32_be(crc, pos - 2, elen + 2); | |
849 | ||
fcff4f10 PS |
850 | elem_parse_failed = false; |
851 | ||
dd76986b JB |
852 | switch (id) { |
853 | case WLAN_EID_SSID: | |
854 | elems->ssid = pos; | |
855 | elems->ssid_len = elen; | |
856 | break; | |
857 | case WLAN_EID_SUPP_RATES: | |
858 | elems->supp_rates = pos; | |
859 | elems->supp_rates_len = elen; | |
860 | break; | |
dd76986b | 861 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
862 | if (elen >= 1) |
863 | elems->ds_params = pos; | |
864 | else | |
865 | elem_parse_failed = true; | |
dd76986b | 866 | break; |
dd76986b JB |
867 | case WLAN_EID_TIM: |
868 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
869 | elems->tim = (void *)pos; | |
870 | elems->tim_len = elen; | |
fcff4f10 PS |
871 | } else |
872 | elem_parse_failed = true; | |
dd76986b | 873 | break; |
dd76986b JB |
874 | case WLAN_EID_CHALLENGE: |
875 | elems->challenge = pos; | |
876 | elems->challenge_len = elen; | |
877 | break; | |
878 | case WLAN_EID_VENDOR_SPECIFIC: | |
879 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
880 | pos[2] == 0xf2) { | |
881 | /* Microsoft OUI (00:50:F2) */ | |
882 | ||
883 | if (calc_crc) | |
884 | crc = crc32_be(crc, pos - 2, elen + 2); | |
885 | ||
441a33ba | 886 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
887 | /* OUI Type 2 - WMM IE */ |
888 | if (pos[4] == 0) { | |
889 | elems->wmm_info = pos; | |
890 | elems->wmm_info_len = elen; | |
891 | } else if (pos[4] == 1) { | |
892 | elems->wmm_param = pos; | |
893 | elems->wmm_param_len = elen; | |
894 | } | |
895 | } | |
896 | } | |
897 | break; | |
898 | case WLAN_EID_RSN: | |
899 | elems->rsn = pos; | |
900 | elems->rsn_len = elen; | |
901 | break; | |
902 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
903 | if (elen >= 1) |
904 | elems->erp_info = pos; | |
905 | else | |
906 | elem_parse_failed = true; | |
dd76986b JB |
907 | break; |
908 | case WLAN_EID_EXT_SUPP_RATES: | |
909 | elems->ext_supp_rates = pos; | |
910 | elems->ext_supp_rates_len = elen; | |
911 | break; | |
912 | case WLAN_EID_HT_CAPABILITY: | |
913 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
914 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
915 | else |
916 | elem_parse_failed = true; | |
dd76986b | 917 | break; |
074d46d1 JB |
918 | case WLAN_EID_HT_OPERATION: |
919 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
920 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
921 | else |
922 | elem_parse_failed = true; | |
dd76986b | 923 | break; |
818255ea MP |
924 | case WLAN_EID_VHT_CAPABILITY: |
925 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
926 | elems->vht_cap_elem = (void *)pos; | |
927 | else | |
928 | elem_parse_failed = true; | |
929 | break; | |
930 | case WLAN_EID_VHT_OPERATION: | |
931 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
932 | elems->vht_operation = (void *)pos; | |
933 | else | |
934 | elem_parse_failed = true; | |
935 | break; | |
bee7f586 JB |
936 | case WLAN_EID_OPMODE_NOTIF: |
937 | if (elen > 0) | |
938 | elems->opmode_notif = pos; | |
939 | else | |
940 | elem_parse_failed = true; | |
941 | break; | |
dd76986b JB |
942 | case WLAN_EID_MESH_ID: |
943 | elems->mesh_id = pos; | |
944 | elems->mesh_id_len = elen; | |
945 | break; | |
946 | case WLAN_EID_MESH_CONFIG: | |
947 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
948 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
949 | else |
950 | elem_parse_failed = true; | |
dd76986b JB |
951 | break; |
952 | case WLAN_EID_PEER_MGMT: | |
953 | elems->peering = pos; | |
954 | elems->peering_len = elen; | |
955 | break; | |
3f52b7e3 MP |
956 | case WLAN_EID_MESH_AWAKE_WINDOW: |
957 | if (elen >= 2) | |
958 | elems->awake_window = (void *)pos; | |
959 | break; | |
dd76986b JB |
960 | case WLAN_EID_PREQ: |
961 | elems->preq = pos; | |
962 | elems->preq_len = elen; | |
963 | break; | |
964 | case WLAN_EID_PREP: | |
965 | elems->prep = pos; | |
966 | elems->prep_len = elen; | |
967 | break; | |
968 | case WLAN_EID_PERR: | |
969 | elems->perr = pos; | |
970 | elems->perr_len = elen; | |
971 | break; | |
972 | case WLAN_EID_RANN: | |
973 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
974 | elems->rann = (void *)pos; | |
fcff4f10 PS |
975 | else |
976 | elem_parse_failed = true; | |
dd76986b JB |
977 | break; |
978 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
979 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
980 | elem_parse_failed = true; | |
981 | break; | |
982 | } | |
983 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 984 | break; |
b4f286a1 JB |
985 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
986 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
987 | elem_parse_failed = true; | |
988 | break; | |
989 | } | |
990 | elems->ext_chansw_ie = (void *)pos; | |
991 | break; | |
85220d71 JB |
992 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
993 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
994 | elem_parse_failed = true; | |
995 | break; | |
996 | } | |
997 | elems->sec_chan_offs = (void *)pos; | |
998 | break; | |
8f2535b9 CYY |
999 | case WLAN_EID_CHAN_SWITCH_PARAM: |
1000 | if (elen != | |
1001 | sizeof(*elems->mesh_chansw_params_ie)) { | |
1002 | elem_parse_failed = true; | |
1003 | break; | |
1004 | } | |
1005 | elems->mesh_chansw_params_ie = (void *)pos; | |
1006 | break; | |
b2e506bf JB |
1007 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
1008 | if (!action || | |
1009 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
1010 | elem_parse_failed = true; | |
1011 | break; | |
1012 | } | |
1013 | elems->wide_bw_chansw_ie = (void *)pos; | |
1014 | break; | |
1015 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
1016 | if (action) { | |
1017 | elem_parse_failed = true; | |
1018 | break; | |
1019 | } | |
1020 | /* | |
1021 | * This is a bit tricky, but as we only care about | |
1022 | * the wide bandwidth channel switch element, so | |
1023 | * just parse it out manually. | |
1024 | */ | |
1025 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
1026 | pos, elen); | |
1027 | if (ie) { | |
1028 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
1029 | elems->wide_bw_chansw_ie = | |
1030 | (void *)(ie + 2); | |
1031 | else | |
1032 | elem_parse_failed = true; | |
1033 | } | |
1034 | break; | |
dd76986b JB |
1035 | case WLAN_EID_COUNTRY: |
1036 | elems->country_elem = pos; | |
1037 | elems->country_elem_len = elen; | |
1038 | break; | |
1039 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
1040 | if (elen != 1) { |
1041 | elem_parse_failed = true; | |
1042 | break; | |
1043 | } | |
dd76986b | 1044 | elems->pwr_constr_elem = pos; |
dd76986b | 1045 | break; |
c8d65917 SG |
1046 | case WLAN_EID_CISCO_VENDOR_SPECIFIC: |
1047 | /* Lots of different options exist, but we only care | |
1048 | * about the Dynamic Transmit Power Control element. | |
1049 | * First check for the Cisco OUI, then for the DTPC | |
1050 | * tag (0x00). | |
1051 | */ | |
1052 | if (elen < 4) { | |
1053 | elem_parse_failed = true; | |
1054 | break; | |
1055 | } | |
1056 | ||
1057 | if (pos[0] != 0x00 || pos[1] != 0x40 || | |
1058 | pos[2] != 0x96 || pos[3] != 0x00) | |
1059 | break; | |
1060 | ||
1061 | if (elen != 6) { | |
1062 | elem_parse_failed = true; | |
1063 | break; | |
1064 | } | |
1065 | ||
1066 | if (calc_crc) | |
1067 | crc = crc32_be(crc, pos - 2, elen + 2); | |
1068 | ||
1069 | elems->cisco_dtpc_elem = pos; | |
1070 | break; | |
dd76986b | 1071 | case WLAN_EID_TIMEOUT_INTERVAL: |
79ba1d89 JB |
1072 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
1073 | elems->timeout_int = (void *)pos; | |
1074 | else | |
1075 | elem_parse_failed = true; | |
dd76986b JB |
1076 | break; |
1077 | default: | |
1078 | break; | |
1079 | } | |
1080 | ||
fcff4f10 PS |
1081 | if (elem_parse_failed) |
1082 | elems->parse_error = true; | |
1083 | else | |
5df45690 | 1084 | __set_bit(id, seen_elems); |
fcff4f10 | 1085 | |
dd76986b JB |
1086 | left -= elen; |
1087 | pos += elen; | |
1088 | } | |
1089 | ||
fcff4f10 PS |
1090 | if (left != 0) |
1091 | elems->parse_error = true; | |
1092 | ||
dd76986b JB |
1093 | return crc; |
1094 | } | |
1095 | ||
3abead59 JB |
1096 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
1097 | bool bss_notify) | |
5825fe10 JB |
1098 | { |
1099 | struct ieee80211_local *local = sdata->local; | |
1100 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 1101 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 1102 | int ac; |
a8ce8544 | 1103 | bool use_11b, enable_qos; |
239281f8 | 1104 | bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ |
aa837e1d | 1105 | int aCWmin, aCWmax; |
5825fe10 JB |
1106 | |
1107 | if (!local->ops->conf_tx) | |
1108 | return; | |
1109 | ||
54bcbc69 JB |
1110 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1111 | return; | |
1112 | ||
5825fe10 JB |
1113 | memset(&qparam, 0, sizeof(qparam)); |
1114 | ||
55de908a JB |
1115 | rcu_read_lock(); |
1116 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1117 | use_11b = (chanctx_conf && | |
4bf88530 | 1118 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1119 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1120 | rcu_read_unlock(); |
5825fe10 | 1121 | |
a8ce8544 SG |
1122 | /* |
1123 | * By default disable QoS in STA mode for old access points, which do | |
1124 | * not support 802.11e. New APs will provide proper queue parameters, | |
1125 | * that we will configure later. | |
1126 | */ | |
1127 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1128 | ||
239281f8 RL |
1129 | is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); |
1130 | ||
1f4ffde8 FZ |
1131 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1132 | aCWmax = 1023; | |
1133 | if (use_11b) | |
1134 | aCWmin = 31; | |
1135 | else | |
1136 | aCWmin = 15; | |
1137 | ||
1138 | /* Confiure old 802.11b/g medium access rules. */ | |
1139 | qparam.cw_max = aCWmax; | |
1140 | qparam.cw_min = aCWmin; | |
1141 | qparam.txop = 0; | |
1142 | qparam.aifs = 2; | |
aa837e1d | 1143 | |
1f4ffde8 FZ |
1144 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1145 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1146 | if (enable_qos) { |
1147 | switch (ac) { | |
1148 | case IEEE80211_AC_BK: | |
1149 | qparam.cw_max = aCWmax; | |
1150 | qparam.cw_min = aCWmin; | |
1151 | qparam.txop = 0; | |
239281f8 RL |
1152 | if (is_ocb) |
1153 | qparam.aifs = 9; | |
1154 | else | |
1155 | qparam.aifs = 7; | |
a8ce8544 SG |
1156 | break; |
1157 | /* never happens but let's not leave undefined */ | |
1158 | default: | |
1159 | case IEEE80211_AC_BE: | |
1160 | qparam.cw_max = aCWmax; | |
1161 | qparam.cw_min = aCWmin; | |
1162 | qparam.txop = 0; | |
239281f8 RL |
1163 | if (is_ocb) |
1164 | qparam.aifs = 6; | |
1165 | else | |
1166 | qparam.aifs = 3; | |
a8ce8544 SG |
1167 | break; |
1168 | case IEEE80211_AC_VI: | |
1169 | qparam.cw_max = aCWmin; | |
1170 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
239281f8 RL |
1171 | if (is_ocb) |
1172 | qparam.txop = 0; | |
1173 | else if (use_11b) | |
a8ce8544 SG |
1174 | qparam.txop = 6016/32; |
1175 | else | |
1176 | qparam.txop = 3008/32; | |
239281f8 RL |
1177 | |
1178 | if (is_ocb) | |
1179 | qparam.aifs = 3; | |
1180 | else | |
1181 | qparam.aifs = 2; | |
a8ce8544 SG |
1182 | break; |
1183 | case IEEE80211_AC_VO: | |
1184 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1185 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
239281f8 RL |
1186 | if (is_ocb) |
1187 | qparam.txop = 0; | |
1188 | else if (use_11b) | |
a8ce8544 SG |
1189 | qparam.txop = 3264/32; |
1190 | else | |
1191 | qparam.txop = 1504/32; | |
1192 | qparam.aifs = 2; | |
1193 | break; | |
1194 | } | |
aa837e1d | 1195 | } |
5825fe10 | 1196 | |
ab13315a KV |
1197 | qparam.uapsd = false; |
1198 | ||
54bcbc69 JB |
1199 | sdata->tx_conf[ac] = qparam; |
1200 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1201 | } |
e1b3ec1a | 1202 | |
f142c6b9 JB |
1203 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1204 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1205 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1206 | if (bss_notify) |
1207 | ieee80211_bss_info_change_notify(sdata, | |
1208 | BSS_CHANGED_QOS); | |
d9734979 | 1209 | } |
5825fe10 | 1210 | } |
e50db65c | 1211 | |
46900298 | 1212 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1213 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1214 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1215 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1216 | u32 tx_flags) | |
46900298 JB |
1217 | { |
1218 | struct ieee80211_local *local = sdata->local; | |
1219 | struct sk_buff *skb; | |
1220 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1221 | int err; |
46900298 | 1222 | |
15e230ab | 1223 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
744462a9 MS |
1224 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + |
1225 | 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); | |
d15b8459 | 1226 | if (!skb) |
46900298 | 1227 | return; |
d15b8459 | 1228 | |
744462a9 | 1229 | skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); |
46900298 JB |
1230 | |
1231 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1232 | memset(mgmt, 0, 24 + 6); | |
1233 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1234 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1235 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1236 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1237 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1238 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1239 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1240 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1241 | if (extra) |
1242 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1243 | |
fffd0934 JB |
1244 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1245 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1246 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1247 | WARN_ON(err); | |
1248 | } | |
1249 | ||
1672c0e3 JB |
1250 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1251 | tx_flags; | |
62ae67be | 1252 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1253 | } |
1254 | ||
6ae16775 AQ |
1255 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1256 | const u8 *bssid, u16 stype, u16 reason, | |
1257 | bool send_frame, u8 *frame_buf) | |
1258 | { | |
1259 | struct ieee80211_local *local = sdata->local; | |
1260 | struct sk_buff *skb; | |
1261 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1262 | ||
1263 | /* build frame */ | |
1264 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1265 | mgmt->duration = 0; /* initialize only */ | |
1266 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1267 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1268 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1269 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1270 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1271 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1272 | ||
1273 | if (send_frame) { | |
1274 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1275 | IEEE80211_DEAUTH_FRAME_LEN); | |
1276 | if (!skb) | |
1277 | return; | |
1278 | ||
1279 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1280 | ||
1281 | /* copy in frame */ | |
1282 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1283 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1284 | ||
1285 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1286 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1287 | IEEE80211_SKB_CB(skb)->flags |= | |
1288 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1289 | ||
1290 | ieee80211_tx_skb(sdata, skb); | |
1291 | } | |
1292 | } | |
1293 | ||
c56ef672 DS |
1294 | static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, |
1295 | u8 *buffer, size_t buffer_len, | |
1296 | const u8 *ie, size_t ie_len, | |
1297 | enum ieee80211_band band, | |
1298 | u32 rate_mask, | |
1299 | struct cfg80211_chan_def *chandef, | |
1300 | size_t *offset) | |
de95a54b JB |
1301 | { |
1302 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1303 | u8 *pos = buffer, *end = buffer + buffer_len; |
c56ef672 | 1304 | size_t noffset; |
8e664fb3 | 1305 | int supp_rates_len, i; |
8dcb2003 JM |
1306 | u8 rates[32]; |
1307 | int num_rates; | |
1308 | int ext_rates_len; | |
2103dec1 SW |
1309 | int shift; |
1310 | u32 rate_flags; | |
de95a54b | 1311 | |
c56ef672 DS |
1312 | *offset = 0; |
1313 | ||
4d36ec58 | 1314 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1315 | if (WARN_ON_ONCE(!sband)) |
1316 | return 0; | |
de95a54b | 1317 | |
2103dec1 SW |
1318 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1319 | shift = ieee80211_chandef_get_shift(chandef); | |
1320 | ||
8dcb2003 JM |
1321 | num_rates = 0; |
1322 | for (i = 0; i < sband->n_bitrates; i++) { | |
1323 | if ((BIT(i) & rate_mask) == 0) | |
1324 | continue; /* skip rate */ | |
2103dec1 SW |
1325 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1326 | continue; | |
1327 | ||
1328 | rates[num_rates++] = | |
1329 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1330 | (1 << shift) * 5); | |
8dcb2003 JM |
1331 | } |
1332 | ||
1333 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1334 | |
c604b9f2 JB |
1335 | if (end - pos < 2 + supp_rates_len) |
1336 | goto out_err; | |
de95a54b | 1337 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1338 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1339 | memcpy(pos, rates, supp_rates_len); |
1340 | pos += supp_rates_len; | |
8e664fb3 JB |
1341 | |
1342 | /* insert "request information" if in custom IEs */ | |
1343 | if (ie && ie_len) { | |
1344 | static const u8 before_extrates[] = { | |
1345 | WLAN_EID_SSID, | |
1346 | WLAN_EID_SUPP_RATES, | |
1347 | WLAN_EID_REQUEST, | |
1348 | }; | |
1349 | noffset = ieee80211_ie_split(ie, ie_len, | |
1350 | before_extrates, | |
1351 | ARRAY_SIZE(before_extrates), | |
c56ef672 DS |
1352 | *offset); |
1353 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1354 | goto out_err; |
c56ef672 DS |
1355 | memcpy(pos, ie + *offset, noffset - *offset); |
1356 | pos += noffset - *offset; | |
1357 | *offset = noffset; | |
8e664fb3 JB |
1358 | } |
1359 | ||
8dcb2003 JM |
1360 | ext_rates_len = num_rates - supp_rates_len; |
1361 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1362 | if (end - pos < 2 + ext_rates_len) |
1363 | goto out_err; | |
8e664fb3 | 1364 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1365 | *pos++ = ext_rates_len; |
1366 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1367 | pos += ext_rates_len; | |
8e664fb3 JB |
1368 | } |
1369 | ||
2103dec1 | 1370 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1371 | if (end - pos < 3) |
1372 | goto out_err; | |
651b5225 JM |
1373 | *pos++ = WLAN_EID_DS_PARAMS; |
1374 | *pos++ = 1; | |
2103dec1 SW |
1375 | *pos++ = ieee80211_frequency_to_channel( |
1376 | chandef->chan->center_freq); | |
651b5225 JM |
1377 | } |
1378 | ||
8e664fb3 JB |
1379 | /* insert custom IEs that go before HT */ |
1380 | if (ie && ie_len) { | |
1381 | static const u8 before_ht[] = { | |
1382 | WLAN_EID_SSID, | |
1383 | WLAN_EID_SUPP_RATES, | |
1384 | WLAN_EID_REQUEST, | |
1385 | WLAN_EID_EXT_SUPP_RATES, | |
1386 | WLAN_EID_DS_PARAMS, | |
1387 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1388 | }; | |
1389 | noffset = ieee80211_ie_split(ie, ie_len, | |
1390 | before_ht, ARRAY_SIZE(before_ht), | |
c56ef672 DS |
1391 | *offset); |
1392 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1393 | goto out_err; |
c56ef672 DS |
1394 | memcpy(pos, ie + *offset, noffset - *offset); |
1395 | pos += noffset - *offset; | |
1396 | *offset = noffset; | |
de95a54b JB |
1397 | } |
1398 | ||
c604b9f2 JB |
1399 | if (sband->ht_cap.ht_supported) { |
1400 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1401 | goto out_err; | |
ef96a842 BG |
1402 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1403 | sband->ht_cap.cap); | |
c604b9f2 | 1404 | } |
5ef2d41a | 1405 | |
de95a54b JB |
1406 | /* |
1407 | * If adding more here, adjust code in main.c | |
1408 | * that calculates local->scan_ies_len. | |
1409 | */ | |
1410 | ||
4d952300 | 1411 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1412 | if (ie && ie_len) { |
4d952300 JB |
1413 | static const u8 before_vht[] = { |
1414 | WLAN_EID_SSID, | |
1415 | WLAN_EID_SUPP_RATES, | |
1416 | WLAN_EID_REQUEST, | |
1417 | WLAN_EID_EXT_SUPP_RATES, | |
1418 | WLAN_EID_DS_PARAMS, | |
1419 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1420 | WLAN_EID_HT_CAPABILITY, | |
1421 | WLAN_EID_BSS_COEX_2040, | |
1422 | WLAN_EID_EXT_CAPABILITY, | |
1423 | WLAN_EID_SSID_LIST, | |
1424 | WLAN_EID_CHANNEL_USAGE, | |
1425 | WLAN_EID_INTERWORKING, | |
1426 | /* mesh ID can't happen here */ | |
1427 | /* 60 GHz can't happen here right now */ | |
1428 | }; | |
1429 | noffset = ieee80211_ie_split(ie, ie_len, | |
1430 | before_vht, ARRAY_SIZE(before_vht), | |
c56ef672 DS |
1431 | *offset); |
1432 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1433 | goto out_err; |
c56ef672 DS |
1434 | memcpy(pos, ie + *offset, noffset - *offset); |
1435 | pos += noffset - *offset; | |
1436 | *offset = noffset; | |
de95a54b JB |
1437 | } |
1438 | ||
c604b9f2 JB |
1439 | if (sband->vht_cap.vht_supported) { |
1440 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1441 | goto out_err; | |
ba0afa2f MP |
1442 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1443 | sband->vht_cap.cap); | |
c604b9f2 | 1444 | } |
ba0afa2f | 1445 | |
c604b9f2 JB |
1446 | return pos - buffer; |
1447 | out_err: | |
1448 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1449 | return pos - buffer; |
1450 | } | |
1451 | ||
c56ef672 DS |
1452 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1453 | size_t buffer_len, | |
1454 | struct ieee80211_scan_ies *ie_desc, | |
1455 | const u8 *ie, size_t ie_len, | |
1456 | u8 bands_used, u32 *rate_masks, | |
1457 | struct cfg80211_chan_def *chandef) | |
1458 | { | |
1459 | size_t pos = 0, old_pos = 0, custom_ie_offset = 0; | |
1460 | int i; | |
1461 | ||
1462 | memset(ie_desc, 0, sizeof(*ie_desc)); | |
1463 | ||
1464 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { | |
1465 | if (bands_used & BIT(i)) { | |
1466 | pos += ieee80211_build_preq_ies_band(local, | |
1467 | buffer + pos, | |
1468 | buffer_len - pos, | |
1469 | ie, ie_len, i, | |
1470 | rate_masks[i], | |
1471 | chandef, | |
1472 | &custom_ie_offset); | |
1473 | ie_desc->ies[i] = buffer + old_pos; | |
1474 | ie_desc->len[i] = pos - old_pos; | |
1475 | old_pos = pos; | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | /* add any remaining custom IEs */ | |
1480 | if (ie && ie_len) { | |
1481 | if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, | |
1482 | "not enough space for preq custom IEs\n")) | |
1483 | return pos; | |
1484 | memcpy(buffer + pos, ie + custom_ie_offset, | |
1485 | ie_len - custom_ie_offset); | |
1486 | ie_desc->common_ies = buffer + pos; | |
1487 | ie_desc->common_ie_len = ie_len - custom_ie_offset; | |
1488 | pos += ie_len - custom_ie_offset; | |
1489 | } | |
1490 | ||
1491 | return pos; | |
1492 | }; | |
1493 | ||
a619a4c0 | 1494 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1495 | u8 *dst, u32 ratemask, |
6b77863b | 1496 | struct ieee80211_channel *chan, |
a619a4c0 | 1497 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1498 | const u8 *ie, size_t ie_len, |
1499 | bool directed) | |
46900298 JB |
1500 | { |
1501 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1502 | struct cfg80211_chan_def chandef; |
46900298 JB |
1503 | struct sk_buff *skb; |
1504 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1505 | int ies_len; |
c56ef672 DS |
1506 | u32 rate_masks[IEEE80211_NUM_BANDS] = {}; |
1507 | struct ieee80211_scan_ies dummy_ie_desc; | |
46900298 | 1508 | |
a806c558 PS |
1509 | /* |
1510 | * Do not send DS Channel parameter for directed probe requests | |
1511 | * in order to maximize the chance that we get a response. Some | |
1512 | * badly-behaved APs don't respond when this parameter is included. | |
1513 | */ | |
2103dec1 | 1514 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1515 | if (directed) |
2103dec1 | 1516 | chandef.chan = NULL; |
a806c558 | 1517 | else |
2103dec1 | 1518 | chandef.chan = chan; |
651b5225 | 1519 | |
7c12ce8b | 1520 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1521 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1522 | if (!skb) |
b9a9ada1 JB |
1523 | return NULL; |
1524 | ||
c56ef672 | 1525 | rate_masks[chan->band] = ratemask; |
b9a9ada1 | 1526 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
c56ef672 DS |
1527 | skb_tailroom(skb), &dummy_ie_desc, |
1528 | ie, ie_len, BIT(chan->band), | |
1529 | rate_masks, &chandef); | |
b9a9ada1 | 1530 | skb_put(skb, ies_len); |
7c12ce8b | 1531 | |
46900298 | 1532 | if (dst) { |
7c12ce8b | 1533 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1534 | memcpy(mgmt->da, dst, ETH_ALEN); |
1535 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1536 | } |
46900298 | 1537 | |
62ae67be | 1538 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1539 | |
a619a4c0 JO |
1540 | return skb; |
1541 | } | |
1542 | ||
1543 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1544 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1545 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1546 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1547 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1548 | { |
1549 | struct sk_buff *skb; | |
1550 | ||
fe94fe05 | 1551 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1552 | ssid, ssid_len, |
85a237fe | 1553 | ie, ie_len, directed); |
aad14ceb | 1554 | if (skb) { |
1672c0e3 | 1555 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1556 | if (scan) |
1557 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1558 | else | |
1559 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1560 | } |
46900298 JB |
1561 | } |
1562 | ||
2103dec1 | 1563 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1564 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1565 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1566 | { |
1567 | struct ieee80211_supported_band *sband; | |
46900298 | 1568 | size_t num_rates; |
2103dec1 SW |
1569 | u32 supp_rates, rate_flags; |
1570 | int i, j, shift; | |
1571 | sband = sdata->local->hw.wiphy->bands[band]; | |
1572 | ||
1573 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1574 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1575 | |
4ee73f33 MK |
1576 | if (WARN_ON(!sband)) |
1577 | return 1; | |
46900298 | 1578 | |
46900298 JB |
1579 | num_rates = sband->n_bitrates; |
1580 | supp_rates = 0; | |
1581 | for (i = 0; i < elems->supp_rates_len + | |
1582 | elems->ext_supp_rates_len; i++) { | |
1583 | u8 rate = 0; | |
1584 | int own_rate; | |
9ebb61a2 | 1585 | bool is_basic; |
46900298 JB |
1586 | if (i < elems->supp_rates_len) |
1587 | rate = elems->supp_rates[i]; | |
1588 | else if (elems->ext_supp_rates) | |
1589 | rate = elems->ext_supp_rates | |
1590 | [i - elems->supp_rates_len]; | |
1591 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1592 | is_basic = !!(rate & 0x80); |
1593 | ||
1594 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1595 | continue; | |
1596 | ||
1597 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1598 | int brate; |
1599 | if ((rate_flags & sband->bitrates[j].flags) | |
1600 | != rate_flags) | |
1601 | continue; | |
1602 | ||
1603 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1604 | 1 << shift); | |
1605 | ||
1606 | if (brate == own_rate) { | |
46900298 | 1607 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1608 | if (basic_rates && is_basic) |
1609 | *basic_rates |= BIT(j); | |
1610 | } | |
1611 | } | |
46900298 JB |
1612 | } |
1613 | return supp_rates; | |
1614 | } | |
f2753ddb | 1615 | |
84f6a01c JB |
1616 | void ieee80211_stop_device(struct ieee80211_local *local) |
1617 | { | |
1618 | ieee80211_led_radio(local, false); | |
67408c8c | 1619 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1620 | |
1621 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1622 | |
1623 | flush_workqueue(local->workqueue); | |
678f415f | 1624 | drv_stop(local); |
84f6a01c JB |
1625 | } |
1626 | ||
f6837ba8 JB |
1627 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1628 | { | |
1629 | struct ieee80211_sub_if_data *sdata; | |
1630 | struct ieee80211_chanctx *ctx; | |
1631 | ||
1632 | /* | |
1633 | * We get here if during resume the device can't be restarted properly. | |
1634 | * We might also get here if this happens during HW reset, which is a | |
1635 | * slightly different situation and we need to drop all connections in | |
1636 | * the latter case. | |
1637 | * | |
1638 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1639 | * warnings but at least we'll then get into a clean stopped state. | |
1640 | */ | |
1641 | ||
1642 | local->resuming = false; | |
1643 | local->suspended = false; | |
1644 | local->started = false; | |
1645 | ||
1646 | /* scheduled scan clearly can't be running any more, but tell | |
1647 | * cfg80211 and clear local state | |
1648 | */ | |
1649 | ieee80211_sched_scan_end(local); | |
1650 | ||
1651 | list_for_each_entry(sdata, &local->interfaces, list) | |
1652 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1653 | ||
1654 | /* Mark channel contexts as not being in the driver any more to avoid | |
1655 | * removing them from the driver during the shutdown process... | |
1656 | */ | |
1657 | mutex_lock(&local->chanctx_mtx); | |
1658 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1659 | ctx->driver_present = false; | |
1660 | mutex_unlock(&local->chanctx_mtx); | |
1661 | ||
1662 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1663 | } | |
1664 | ||
153a5fc4 SG |
1665 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1666 | struct ieee80211_sub_if_data *sdata) | |
1667 | { | |
1668 | struct ieee80211_chanctx_conf *conf; | |
1669 | struct ieee80211_chanctx *ctx; | |
1670 | ||
1671 | if (!local->use_chanctx) | |
1672 | return; | |
1673 | ||
1674 | mutex_lock(&local->chanctx_mtx); | |
1675 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1676 | lockdep_is_held(&local->chanctx_mtx)); | |
1677 | if (conf) { | |
1678 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1679 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1680 | } | |
1681 | mutex_unlock(&local->chanctx_mtx); | |
1682 | } | |
1683 | ||
f2753ddb JB |
1684 | int ieee80211_reconfig(struct ieee80211_local *local) |
1685 | { | |
1686 | struct ieee80211_hw *hw = &local->hw; | |
1687 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1688 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1689 | struct sta_info *sta; |
2683d65b | 1690 | int res, i; |
d888130a | 1691 | bool reconfig_due_to_wowlan = false; |
d43c6b6e DS |
1692 | struct ieee80211_sub_if_data *sched_scan_sdata; |
1693 | bool sched_scan_stopped = false; | |
d888130a | 1694 | |
8f21b0ad | 1695 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1696 | if (local->suspended) |
1697 | local->resuming = true; | |
f2753ddb | 1698 | |
eecc4800 | 1699 | if (local->wowlan) { |
eecc4800 | 1700 | res = drv_resume(local); |
27b3eb9c | 1701 | local->wowlan = false; |
eecc4800 JB |
1702 | if (res < 0) { |
1703 | local->resuming = false; | |
1704 | return res; | |
1705 | } | |
1706 | if (res == 0) | |
1707 | goto wake_up; | |
1708 | WARN_ON(res > 1); | |
1709 | /* | |
1710 | * res is 1, which means the driver requested | |
1711 | * to go through a regular reset on wakeup. | |
1712 | */ | |
d888130a | 1713 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1714 | } |
1715 | #endif | |
94f9b97b JB |
1716 | /* everything else happens only if HW was up & running */ |
1717 | if (!local->open_count) | |
1718 | goto wake_up; | |
f2753ddb | 1719 | |
94f9b97b JB |
1720 | /* |
1721 | * Upon resume hardware can sometimes be goofy due to | |
1722 | * various platform / driver / bus issues, so restarting | |
1723 | * the device may at times not work immediately. Propagate | |
1724 | * the error. | |
1725 | */ | |
1726 | res = drv_start(local); | |
1727 | if (res) { | |
f6837ba8 JB |
1728 | if (local->suspended) |
1729 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); | |
1730 | else | |
1731 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1732 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1733 | return res; |
f2753ddb JB |
1734 | } |
1735 | ||
7f281975 YAP |
1736 | /* setup fragmentation threshold */ |
1737 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1738 | ||
1739 | /* setup RTS threshold */ | |
1740 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1741 | ||
1742 | /* reset coverage class */ | |
1743 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1744 | ||
94f9b97b JB |
1745 | ieee80211_led_radio(local, true); |
1746 | ieee80211_mod_tpt_led_trig(local, | |
1747 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1748 | ||
f2753ddb | 1749 | /* add interfaces */ |
4b6f1dd6 JB |
1750 | sdata = rtnl_dereference(local->monitor_sdata); |
1751 | if (sdata) { | |
3c3e21e7 JB |
1752 | /* in HW restart it exists already */ |
1753 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1754 | res = drv_add_interface(local, sdata); |
1755 | if (WARN_ON(res)) { | |
0c2bef46 | 1756 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1757 | synchronize_net(); |
1758 | kfree(sdata); | |
1759 | } | |
1760 | } | |
1761 | ||
f2753ddb JB |
1762 | list_for_each_entry(sdata, &local->interfaces, list) { |
1763 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1764 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1765 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1766 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1767 | } |
1768 | ||
55de908a | 1769 | /* add channel contexts */ |
f0dea9c7 AS |
1770 | if (local->use_chanctx) { |
1771 | mutex_lock(&local->chanctx_mtx); | |
1772 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
5bcae31d MK |
1773 | if (ctx->replace_state != |
1774 | IEEE80211_CHANCTX_REPLACES_OTHER) | |
1775 | WARN_ON(drv_add_chanctx(local, ctx)); | |
f0dea9c7 | 1776 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1777 | |
7df180f7 ZG |
1778 | list_for_each_entry(sdata, &local->interfaces, list) { |
1779 | if (!ieee80211_sdata_running(sdata)) | |
1780 | continue; | |
1781 | ieee80211_assign_chanctx(local, sdata); | |
1782 | } | |
6352c87f | 1783 | |
7df180f7 ZG |
1784 | sdata = rtnl_dereference(local->monitor_sdata); |
1785 | if (sdata && ieee80211_sdata_running(sdata)) | |
1786 | ieee80211_assign_chanctx(local, sdata); | |
1787 | } | |
fe5f2559 | 1788 | |
f2753ddb | 1789 | /* add STAs back */ |
34e89507 JB |
1790 | mutex_lock(&local->sta_mtx); |
1791 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1792 | enum ieee80211_sta_state state; |
f09603a2 | 1793 | |
2e8d397e AN |
1794 | if (!sta->uploaded) |
1795 | continue; | |
1796 | ||
1797 | /* AP-mode stations will be added later */ | |
1798 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1799 | continue; | |
1800 | ||
1801 | for (state = IEEE80211_STA_NOTEXIST; | |
1802 | state < sta->sta_state; state++) | |
1803 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1804 | state + 1)); | |
f2753ddb | 1805 | } |
34e89507 | 1806 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1807 | |
2683d65b | 1808 | /* reconfigure tx conf */ |
54bcbc69 JB |
1809 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1810 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1811 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1812 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1813 | !ieee80211_sdata_running(sdata)) | |
1814 | continue; | |
f6f3def3 | 1815 | |
54bcbc69 JB |
1816 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1817 | drv_conf_tx(local, sdata, i, | |
1818 | &sdata->tx_conf[i]); | |
1819 | } | |
f6f3def3 | 1820 | } |
2683d65b | 1821 | |
f2753ddb JB |
1822 | /* reconfigure hardware */ |
1823 | ieee80211_hw_config(local, ~0); | |
1824 | ||
f2753ddb | 1825 | ieee80211_configure_filter(local); |
f2753ddb JB |
1826 | |
1827 | /* Finally also reconfigure all the BSS information */ | |
1828 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1829 | u32 changed; |
1830 | ||
9607e6b6 | 1831 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1832 | continue; |
ac8dd506 JB |
1833 | |
1834 | /* common change flags for all interface types */ | |
1835 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1836 | BSS_CHANGED_ERP_PREAMBLE | | |
1837 | BSS_CHANGED_ERP_SLOT | | |
1838 | BSS_CHANGED_HT | | |
1839 | BSS_CHANGED_BASIC_RATES | | |
1840 | BSS_CHANGED_BEACON_INT | | |
1841 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1842 | BSS_CHANGED_CQM | |
55de47f6 | 1843 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1844 | BSS_CHANGED_IDLE | |
1845 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1846 | |
f2753ddb JB |
1847 | switch (sdata->vif.type) { |
1848 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1849 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1850 | BSS_CHANGED_ARP_FILTER | |
1851 | BSS_CHANGED_PS; | |
c65dd147 | 1852 | |
989c6505 AB |
1853 | /* Re-send beacon info report to the driver */ |
1854 | if (sdata->u.mgd.have_beacon) | |
1855 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1856 | |
8d61ffa5 | 1857 | sdata_lock(sdata); |
ac8dd506 | 1858 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1859 | sdata_unlock(sdata); |
ac8dd506 | 1860 | break; |
6e0bd6c3 | 1861 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1862 | changed |= BSS_CHANGED_OCB; |
1863 | ieee80211_bss_info_change_notify(sdata, changed); | |
6e0bd6c3 | 1864 | break; |
f2753ddb | 1865 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1866 | changed |= BSS_CHANGED_IBSS; |
1867 | /* fall through */ | |
f2753ddb | 1868 | case NL80211_IFTYPE_AP: |
339afbf4 | 1869 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1870 | |
1041638f | 1871 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1872 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1873 | ||
1041638f JB |
1874 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1875 | drv_start_ap(local, sdata); | |
1876 | } | |
1877 | ||
7827493b | 1878 | /* fall through */ |
f2753ddb | 1879 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1880 | if (sdata->vif.bss_conf.enable_beacon) { |
1881 | changed |= BSS_CHANGED_BEACON | | |
1882 | BSS_CHANGED_BEACON_ENABLED; | |
1883 | ieee80211_bss_info_change_notify(sdata, changed); | |
1884 | } | |
f2753ddb JB |
1885 | break; |
1886 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1887 | case NL80211_IFTYPE_AP_VLAN: |
1888 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1889 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1890 | /* nothing to do */ |
f142c6b9 | 1891 | break; |
f2753ddb | 1892 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1893 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1894 | case NL80211_IFTYPE_P2P_CLIENT: |
1895 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1896 | WARN_ON(1); |
1897 | break; | |
1898 | } | |
1899 | } | |
1900 | ||
8e1b23b9 ES |
1901 | ieee80211_recalc_ps(local, -1); |
1902 | ||
6e1b1b24 EP |
1903 | /* |
1904 | * The sta might be in psm against the ap (e.g. because | |
1905 | * this was the state before a hw restart), so we | |
1906 | * explicitly send a null packet in order to make sure | |
1907 | * it'll sync against the ap (and get out of psm). | |
1908 | */ | |
1909 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1910 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1911 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1912 | continue; | |
20f544ee JB |
1913 | if (!sdata->u.mgd.associated) |
1914 | continue; | |
6e1b1b24 EP |
1915 | |
1916 | ieee80211_send_nullfunc(local, sdata, 0); | |
1917 | } | |
1918 | } | |
1919 | ||
2e8d397e AN |
1920 | /* APs are now beaconing, add back stations */ |
1921 | mutex_lock(&local->sta_mtx); | |
1922 | list_for_each_entry(sta, &local->sta_list, list) { | |
1923 | enum ieee80211_sta_state state; | |
1924 | ||
1925 | if (!sta->uploaded) | |
1926 | continue; | |
1927 | ||
1928 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1929 | continue; | |
1930 | ||
1931 | for (state = IEEE80211_STA_NOTEXIST; | |
1932 | state < sta->sta_state; state++) | |
1933 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1934 | state + 1)); | |
1935 | } | |
1936 | mutex_unlock(&local->sta_mtx); | |
1937 | ||
7b21aea0 ES |
1938 | /* add back keys */ |
1939 | list_for_each_entry(sdata, &local->interfaces, list) | |
1940 | if (ieee80211_sdata_running(sdata)) | |
1941 | ieee80211_enable_keys(sdata); | |
1942 | ||
c6209488 | 1943 | wake_up: |
04800ada AN |
1944 | local->in_reconfig = false; |
1945 | barrier(); | |
1946 | ||
3c3e21e7 JB |
1947 | if (local->monitors == local->open_count && local->monitors > 0) |
1948 | ieee80211_add_virtual_monitor(local); | |
1949 | ||
2a419056 JB |
1950 | /* |
1951 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1952 | * sessions can be established after a resume. | |
1953 | * | |
1954 | * Also tear down aggregation sessions since reconfiguring | |
1955 | * them in a hardware restart scenario is not easily done | |
1956 | * right now, and the hardware will have lost information | |
1957 | * about the sessions, but we and the AP still think they | |
1958 | * are active. This is really a workaround though. | |
1959 | */ | |
74e2bd1f | 1960 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1961 | mutex_lock(&local->sta_mtx); |
1962 | ||
1963 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1964 | ieee80211_sta_tear_down_BA_sessions( |
1965 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1966 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1967 | } |
2a419056 JB |
1968 | |
1969 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1970 | } |
74e2bd1f | 1971 | |
445ea4e8 | 1972 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1973 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
1974 | false); | |
f2753ddb | 1975 | |
32769814 AN |
1976 | /* |
1977 | * Reconfigure sched scan if it was interrupted by FW restart or | |
1978 | * suspend. | |
1979 | */ | |
1980 | mutex_lock(&local->mtx); | |
1981 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
1982 | lockdep_is_held(&local->mtx)); | |
1983 | if (sched_scan_sdata && local->sched_scan_req) | |
1984 | /* | |
1985 | * Sched scan stopped, but we don't want to report it. Instead, | |
1986 | * we're trying to reschedule. | |
1987 | */ | |
1988 | if (__ieee80211_request_sched_scan_start(sched_scan_sdata, | |
1989 | local->sched_scan_req)) | |
1990 | sched_scan_stopped = true; | |
1991 | mutex_unlock(&local->mtx); | |
1992 | ||
1993 | if (sched_scan_stopped) | |
e669ba2d | 1994 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); |
32769814 | 1995 | |
5bb644a0 JB |
1996 | /* |
1997 | * If this is for hw restart things are still running. | |
1998 | * We may want to change that later, however. | |
1999 | */ | |
8f21b0ad | 2000 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 2001 | drv_restart_complete(local); |
8f21b0ad JB |
2002 | |
2003 | if (!local->suspended) | |
5bb644a0 JB |
2004 | return 0; |
2005 | ||
2006 | #ifdef CONFIG_PM | |
ceb99fe0 | 2007 | /* first set suspended false, then resuming */ |
5bb644a0 | 2008 | local->suspended = false; |
ceb99fe0 JB |
2009 | mb(); |
2010 | local->resuming = false; | |
5bb644a0 | 2011 | |
b8360ab8 JB |
2012 | list_for_each_entry(sdata, &local->interfaces, list) { |
2013 | if (!ieee80211_sdata_running(sdata)) | |
2014 | continue; | |
2015 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2016 | ieee80211_sta_restart(sdata); | |
2017 | } | |
2018 | ||
26d59535 | 2019 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
2020 | #else |
2021 | WARN_ON(1); | |
2022 | #endif | |
d43c6b6e | 2023 | |
f2753ddb JB |
2024 | return 0; |
2025 | } | |
42935eca | 2026 | |
95acac61 JB |
2027 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
2028 | { | |
2029 | struct ieee80211_sub_if_data *sdata; | |
2030 | struct ieee80211_local *local; | |
2031 | struct ieee80211_key *key; | |
2032 | ||
2033 | if (WARN_ON(!vif)) | |
2034 | return; | |
2035 | ||
2036 | sdata = vif_to_sdata(vif); | |
2037 | local = sdata->local; | |
2038 | ||
2039 | if (WARN_ON(!local->resuming)) | |
2040 | return; | |
2041 | ||
2042 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
2043 | return; | |
2044 | ||
2045 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
2046 | ||
2047 | mutex_lock(&local->key_mtx); | |
2048 | list_for_each_entry(key, &sdata->key_list, list) | |
2049 | key->flags |= KEY_FLAG_TAINTED; | |
2050 | mutex_unlock(&local->key_mtx); | |
2051 | } | |
2052 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
2053 | ||
04ecd257 | 2054 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 2055 | { |
04ecd257 JB |
2056 | struct ieee80211_local *local = sdata->local; |
2057 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2058 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 2059 | |
04ecd257 | 2060 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 2061 | |
04ecd257 JB |
2062 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
2063 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 2064 | |
04ecd257 | 2065 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 2066 | goto unlock; |
0f78231b | 2067 | |
04ecd257 JB |
2068 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
2069 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 2070 | unlock: |
04ecd257 | 2071 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 2072 | } |
8e664fb3 | 2073 | |
21f659bf EP |
2074 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
2075 | { | |
2076 | struct ieee80211_local *local = sdata->local; | |
2077 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2078 | struct ieee80211_chanctx *chanctx; | |
2079 | ||
2080 | mutex_lock(&local->chanctx_mtx); | |
2081 | ||
2082 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
2083 | lockdep_is_held(&local->chanctx_mtx)); | |
2084 | ||
2085 | if (WARN_ON_ONCE(!chanctx_conf)) | |
2086 | goto unlock; | |
2087 | ||
2088 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
2089 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
2090 | unlock: | |
2091 | mutex_unlock(&local->chanctx_mtx); | |
2092 | } | |
2093 | ||
8e664fb3 JB |
2094 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
2095 | { | |
2096 | int i; | |
2097 | ||
2098 | for (i = 0; i < n_ids; i++) | |
2099 | if (ids[i] == id) | |
2100 | return true; | |
2101 | return false; | |
2102 | } | |
2103 | ||
8e664fb3 JB |
2104 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, |
2105 | const u8 *ids, int n_ids, size_t offset) | |
2106 | { | |
2107 | size_t pos = offset; | |
2108 | ||
2109 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
2110 | pos += 2 + ies[pos + 1]; | |
2111 | ||
2112 | return pos; | |
2113 | } | |
a7f3a768 | 2114 | EXPORT_SYMBOL(ieee80211_ie_split); |
8e664fb3 JB |
2115 | |
2116 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
2117 | { | |
2118 | size_t pos = offset; | |
2119 | ||
2120 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
2121 | pos += 2 + ies[pos + 1]; | |
2122 | ||
2123 | return pos; | |
2124 | } | |
615f7b9b MV |
2125 | |
2126 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
2127 | int rssi_min_thold, | |
2128 | int rssi_max_thold) | |
2129 | { | |
2130 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
2131 | ||
2132 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2133 | return; | |
2134 | ||
2135 | /* | |
2136 | * Scale up threshold values before storing it, as the RSSI averaging | |
2137 | * algorithm uses a scaled up value as well. Change this scaling | |
2138 | * factor if the RSSI averaging algorithm changes. | |
2139 | */ | |
2140 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
2141 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
2142 | } | |
2143 | ||
2144 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
2145 | int rssi_min_thold, | |
2146 | int rssi_max_thold) | |
2147 | { | |
2148 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2149 | ||
2150 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2151 | rssi_min_thold > rssi_max_thold); | |
2152 | ||
2153 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2154 | rssi_max_thold); | |
2155 | } | |
2156 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2157 | ||
2158 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2159 | { | |
2160 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2161 | ||
2162 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2163 | } | |
2164 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2165 | |
ef96a842 | 2166 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2167 | u16 cap) |
2168 | { | |
2169 | __le16 tmp; | |
2170 | ||
2171 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2172 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2173 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2174 | ||
2175 | /* capability flags */ | |
2176 | tmp = cpu_to_le16(cap); | |
2177 | memcpy(pos, &tmp, sizeof(u16)); | |
2178 | pos += sizeof(u16); | |
2179 | ||
2180 | /* AMPDU parameters */ | |
ef96a842 BG |
2181 | *pos++ = ht_cap->ampdu_factor | |
2182 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2183 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2184 | ||
2185 | /* MCS set */ | |
ef96a842 BG |
2186 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2187 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2188 | |
2189 | /* extended capabilities */ | |
2190 | pos += sizeof(__le16); | |
2191 | ||
2192 | /* BF capabilities */ | |
2193 | pos += sizeof(__le32); | |
2194 | ||
2195 | /* antenna selection */ | |
2196 | pos += sizeof(u8); | |
2197 | ||
2198 | return pos; | |
2199 | } | |
2200 | ||
ba0afa2f | 2201 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2202 | u32 cap) |
ba0afa2f MP |
2203 | { |
2204 | __le32 tmp; | |
2205 | ||
2206 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2207 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2208 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2209 | |
2210 | /* capability flags */ | |
2211 | tmp = cpu_to_le32(cap); | |
2212 | memcpy(pos, &tmp, sizeof(u32)); | |
2213 | pos += sizeof(u32); | |
2214 | ||
2215 | /* VHT MCS set */ | |
2216 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2217 | pos += sizeof(vht_cap->vht_mcs); | |
2218 | ||
2219 | return pos; | |
2220 | } | |
2221 | ||
074d46d1 | 2222 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2223 | const struct cfg80211_chan_def *chandef, |
431e3154 | 2224 | u16 prot_mode) |
42e7aa77 | 2225 | { |
074d46d1 | 2226 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2227 | /* Build HT Information */ |
074d46d1 JB |
2228 | *pos++ = WLAN_EID_HT_OPERATION; |
2229 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2230 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2231 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2232 | chandef->chan->center_freq); | |
2233 | switch (chandef->width) { | |
2234 | case NL80211_CHAN_WIDTH_160: | |
2235 | case NL80211_CHAN_WIDTH_80P80: | |
2236 | case NL80211_CHAN_WIDTH_80: | |
2237 | case NL80211_CHAN_WIDTH_40: | |
2238 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2239 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2240 | else | |
2241 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2242 | break; |
42e7aa77 | 2243 | default: |
074d46d1 | 2244 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2245 | break; |
2246 | } | |
aee286c2 | 2247 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2248 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2249 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2250 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2251 | |
431e3154 | 2252 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2253 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2254 | |
2255 | /* It seems that Basic MCS set and Supported MCS set | |
2256 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2257 | memset(&ht_oper->basic_set, 0, 16); |
2258 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2259 | |
074d46d1 | 2260 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2261 | } |
2262 | ||
4bf88530 | 2263 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2264 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2265 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2266 | { |
2267 | enum nl80211_channel_type channel_type; | |
2268 | ||
4bf88530 JB |
2269 | if (!ht_oper) { |
2270 | cfg80211_chandef_create(chandef, control_chan, | |
2271 | NL80211_CHAN_NO_HT); | |
2272 | return; | |
2273 | } | |
42e7aa77 | 2274 | |
074d46d1 | 2275 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2276 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2277 | channel_type = NL80211_CHAN_HT20; | |
2278 | break; | |
2279 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2280 | channel_type = NL80211_CHAN_HT40PLUS; | |
2281 | break; | |
2282 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2283 | channel_type = NL80211_CHAN_HT40MINUS; | |
2284 | break; | |
2285 | default: | |
2286 | channel_type = NL80211_CHAN_NO_HT; | |
2287 | } | |
2288 | ||
4bf88530 | 2289 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2290 | } |
2291 | ||
2103dec1 SW |
2292 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2293 | const struct ieee80211_supported_band *sband, | |
2294 | const u8 *srates, int srates_len, u32 *rates) | |
2295 | { | |
2296 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2297 | int shift = ieee80211_chandef_get_shift(chandef); | |
2298 | struct ieee80211_rate *br; | |
2299 | int brate, rate, i, j, count = 0; | |
2300 | ||
2301 | *rates = 0; | |
2302 | ||
2303 | for (i = 0; i < srates_len; i++) { | |
2304 | rate = srates[i] & 0x7f; | |
2305 | ||
2306 | for (j = 0; j < sband->n_bitrates; j++) { | |
2307 | br = &sband->bitrates[j]; | |
2308 | if ((rate_flags & br->flags) != rate_flags) | |
2309 | continue; | |
2310 | ||
2311 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2312 | if (brate == rate) { | |
2313 | *rates |= BIT(j); | |
2314 | count++; | |
2315 | break; | |
2316 | } | |
2317 | } | |
2318 | } | |
2319 | return count; | |
2320 | } | |
2321 | ||
fc8a7321 | 2322 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2323 | struct sk_buff *skb, bool need_basic, |
2324 | enum ieee80211_band band) | |
768db343 | 2325 | { |
768db343 AN |
2326 | struct ieee80211_local *local = sdata->local; |
2327 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2328 | int rate, shift; |
768db343 | 2329 | u8 i, rates, *pos; |
fc8a7321 | 2330 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2331 | u32 rate_flags; |
768db343 | 2332 | |
2103dec1 SW |
2333 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2334 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2335 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2336 | rates = 0; |
2337 | for (i = 0; i < sband->n_bitrates; i++) { | |
2338 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2339 | continue; | |
2340 | rates++; | |
2341 | } | |
768db343 AN |
2342 | if (rates > 8) |
2343 | rates = 8; | |
2344 | ||
2345 | if (skb_tailroom(skb) < rates + 2) | |
2346 | return -ENOMEM; | |
2347 | ||
2348 | pos = skb_put(skb, rates + 2); | |
2349 | *pos++ = WLAN_EID_SUPP_RATES; | |
2350 | *pos++ = rates; | |
2351 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2352 | u8 basic = 0; |
2103dec1 SW |
2353 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2354 | continue; | |
2355 | ||
657c3e0c AN |
2356 | if (need_basic && basic_rates & BIT(i)) |
2357 | basic = 0x80; | |
768db343 | 2358 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2359 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2360 | 5 * (1 << shift)); | |
2361 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2362 | } |
2363 | ||
2364 | return 0; | |
2365 | } | |
2366 | ||
fc8a7321 | 2367 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2368 | struct sk_buff *skb, bool need_basic, |
2369 | enum ieee80211_band band) | |
768db343 | 2370 | { |
768db343 AN |
2371 | struct ieee80211_local *local = sdata->local; |
2372 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2373 | int rate, shift; |
768db343 | 2374 | u8 i, exrates, *pos; |
fc8a7321 | 2375 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2376 | u32 rate_flags; |
2377 | ||
2378 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2379 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2380 | |
6b77863b | 2381 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2382 | exrates = 0; |
2383 | for (i = 0; i < sband->n_bitrates; i++) { | |
2384 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2385 | continue; | |
2386 | exrates++; | |
2387 | } | |
2388 | ||
768db343 AN |
2389 | if (exrates > 8) |
2390 | exrates -= 8; | |
2391 | else | |
2392 | exrates = 0; | |
2393 | ||
2394 | if (skb_tailroom(skb) < exrates + 2) | |
2395 | return -ENOMEM; | |
2396 | ||
2397 | if (exrates) { | |
2398 | pos = skb_put(skb, exrates + 2); | |
2399 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2400 | *pos++ = exrates; | |
2401 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2402 | u8 basic = 0; |
2103dec1 SW |
2403 | if ((rate_flags & sband->bitrates[i].flags) |
2404 | != rate_flags) | |
2405 | continue; | |
657c3e0c AN |
2406 | if (need_basic && basic_rates & BIT(i)) |
2407 | basic = 0x80; | |
2103dec1 SW |
2408 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2409 | 5 * (1 << shift)); | |
2410 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2411 | } |
2412 | } | |
2413 | return 0; | |
2414 | } | |
1dae27f8 WYG |
2415 | |
2416 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2417 | { | |
2418 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2419 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2420 | ||
be6bcabc WYG |
2421 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2422 | /* non-managed type inferfaces */ | |
2423 | return 0; | |
2424 | } | |
3a7bba64 | 2425 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2426 | } |
0d8a0a17 | 2427 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2428 | |
2429 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2430 | { | |
2431 | if (!mcs) | |
2432 | return 1; | |
2433 | ||
2434 | /* TODO: consider rx_highest */ | |
2435 | ||
2436 | if (mcs->rx_mask[3]) | |
2437 | return 4; | |
2438 | if (mcs->rx_mask[2]) | |
2439 | return 3; | |
2440 | if (mcs->rx_mask[1]) | |
2441 | return 2; | |
2442 | return 1; | |
2443 | } | |
f4bda337 TP |
2444 | |
2445 | /** | |
2446 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2447 | * @local: mac80211 hw info struct | |
2448 | * @status: RX status | |
2449 | * @mpdu_len: total MPDU length (including FCS) | |
2450 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2451 | * | |
2452 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2453 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2454 | * the timestamp to TSF at beginning of MPDU reception. | |
2455 | */ | |
2456 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2457 | struct ieee80211_rx_status *status, | |
2458 | unsigned int mpdu_len, | |
2459 | unsigned int mpdu_offset) | |
2460 | { | |
2461 | u64 ts = status->mactime; | |
2462 | struct rate_info ri; | |
2463 | u16 rate; | |
2464 | ||
2465 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2466 | return 0; | |
2467 | ||
2468 | memset(&ri, 0, sizeof(ri)); | |
2469 | ||
2470 | /* Fill cfg80211 rate info */ | |
2471 | if (status->flag & RX_FLAG_HT) { | |
2472 | ri.mcs = status->rate_idx; | |
2473 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2474 | if (status->flag & RX_FLAG_40MHZ) | |
2475 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2476 | if (status->flag & RX_FLAG_SHORT_GI) | |
2477 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2478 | } else if (status->flag & RX_FLAG_VHT) { |
2479 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2480 | ri.mcs = status->rate_idx; | |
2481 | ri.nss = status->vht_nss; | |
2482 | if (status->flag & RX_FLAG_40MHZ) | |
2483 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
1b8d242a | 2484 | if (status->vht_flag & RX_VHT_FLAG_80MHZ) |
5614618e | 2485 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; |
1b8d242a | 2486 | if (status->vht_flag & RX_VHT_FLAG_80P80MHZ) |
5614618e | 2487 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; |
1b8d242a | 2488 | if (status->vht_flag & RX_VHT_FLAG_160MHZ) |
5614618e JB |
2489 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; |
2490 | if (status->flag & RX_FLAG_SHORT_GI) | |
2491 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2492 | } else { |
2493 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2494 | int shift = 0; |
2495 | int bitrate; | |
2496 | ||
2497 | if (status->flag & RX_FLAG_10MHZ) | |
2498 | shift = 1; | |
2499 | if (status->flag & RX_FLAG_5MHZ) | |
2500 | shift = 2; | |
f4bda337 TP |
2501 | |
2502 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2503 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2504 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2505 | } |
2506 | ||
2507 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2508 | if (WARN_ONCE(!rate, |
2509 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2510 | status->flag, status->rate_idx, status->vht_nss)) | |
2511 | return 0; | |
f4bda337 TP |
2512 | |
2513 | /* rewind from end of MPDU */ | |
2514 | if (status->flag & RX_FLAG_MACTIME_END) | |
2515 | ts -= mpdu_len * 8 * 10 / rate; | |
2516 | ||
2517 | ts += mpdu_offset * 8 * 10 / rate; | |
2518 | ||
2519 | return ts; | |
2520 | } | |
164eb02d SW |
2521 | |
2522 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2523 | { | |
2524 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2525 | struct cfg80211_chan_def chandef; |
164eb02d | 2526 | |
34a3740d | 2527 | mutex_lock(&local->mtx); |
164eb02d SW |
2528 | mutex_lock(&local->iflist_mtx); |
2529 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2530 | /* it might be waiting for the local->mtx, but then |
2531 | * by the time it gets it, sdata->wdev.cac_started | |
2532 | * will no longer be true | |
2533 | */ | |
2534 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2535 | |
2536 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2537 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2538 | ieee80211_vif_release_channel(sdata); |
2539 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2540 | &chandef, |
164eb02d SW |
2541 | NL80211_RADAR_CAC_ABORTED, |
2542 | GFP_KERNEL); | |
2543 | } | |
2544 | } | |
2545 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2546 | mutex_unlock(&local->mtx); |
164eb02d SW |
2547 | } |
2548 | ||
2549 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2550 | { | |
2551 | struct ieee80211_local *local = | |
2552 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2553 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
486cf4c0 MK |
2554 | struct ieee80211_chanctx *ctx; |
2555 | int num_chanctx = 0; | |
2556 | ||
2557 | mutex_lock(&local->chanctx_mtx); | |
2558 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2559 | if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) | |
2560 | continue; | |
2561 | ||
2562 | num_chanctx++; | |
2563 | chandef = ctx->conf.def; | |
2564 | } | |
2565 | mutex_unlock(&local->chanctx_mtx); | |
164eb02d SW |
2566 | |
2567 | ieee80211_dfs_cac_cancel(local); | |
2568 | ||
486cf4c0 MK |
2569 | if (num_chanctx > 1) |
2570 | /* XXX: multi-channel is not supported yet */ | |
164eb02d | 2571 | WARN_ON(1); |
84a3d1c9 | 2572 | else |
164eb02d | 2573 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2574 | } |
2575 | ||
2576 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2577 | { | |
2578 | struct ieee80211_local *local = hw_to_local(hw); | |
2579 | ||
2580 | trace_api_radar_detected(local); | |
2581 | ||
2582 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2583 | } | |
2584 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2585 | |
2586 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2587 | { | |
2588 | u32 ret; | |
2589 | int tmp; | |
2590 | ||
2591 | switch (c->width) { | |
2592 | case NL80211_CHAN_WIDTH_20: | |
2593 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2594 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2595 | break; | |
2596 | case NL80211_CHAN_WIDTH_40: | |
2597 | c->width = NL80211_CHAN_WIDTH_20; | |
2598 | c->center_freq1 = c->chan->center_freq; | |
2599 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2600 | IEEE80211_STA_DISABLE_VHT; | |
2601 | break; | |
2602 | case NL80211_CHAN_WIDTH_80: | |
2603 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2604 | /* n_P40 */ | |
2605 | tmp /= 2; | |
2606 | /* freq_P40 */ | |
2607 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2608 | c->width = NL80211_CHAN_WIDTH_40; | |
2609 | ret = IEEE80211_STA_DISABLE_VHT; | |
2610 | break; | |
2611 | case NL80211_CHAN_WIDTH_80P80: | |
2612 | c->center_freq2 = 0; | |
2613 | c->width = NL80211_CHAN_WIDTH_80; | |
2614 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2615 | IEEE80211_STA_DISABLE_160MHZ; | |
2616 | break; | |
2617 | case NL80211_CHAN_WIDTH_160: | |
2618 | /* n_P20 */ | |
2619 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2620 | /* n_P80 */ | |
2621 | tmp /= 4; | |
2622 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2623 | c->width = NL80211_CHAN_WIDTH_80; | |
2624 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2625 | IEEE80211_STA_DISABLE_160MHZ; | |
2626 | break; | |
2627 | default: | |
2628 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2629 | WARN_ON_ONCE(1); | |
2630 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2631 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2632 | break; | |
2633 | case NL80211_CHAN_WIDTH_5: | |
2634 | case NL80211_CHAN_WIDTH_10: | |
2635 | WARN_ON_ONCE(1); | |
2636 | /* keep c->width */ | |
2637 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2638 | break; | |
2639 | } | |
2640 | ||
2641 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2642 | ||
2643 | return ret; | |
2644 | } | |
687da132 EG |
2645 | |
2646 | /* | |
2647 | * Returns true if smps_mode_new is strictly more restrictive than | |
2648 | * smps_mode_old. | |
2649 | */ | |
2650 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2651 | enum ieee80211_smps_mode smps_mode_new) | |
2652 | { | |
2653 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2654 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2655 | return false; | |
2656 | ||
2657 | switch (smps_mode_old) { | |
2658 | case IEEE80211_SMPS_STATIC: | |
2659 | return false; | |
2660 | case IEEE80211_SMPS_DYNAMIC: | |
2661 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2662 | case IEEE80211_SMPS_OFF: | |
2663 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2664 | default: | |
2665 | WARN_ON(1); | |
2666 | } | |
2667 | ||
2668 | return false; | |
2669 | } | |
c6da674a CYY |
2670 | |
2671 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2672 | struct cfg80211_csa_settings *csa_settings) | |
2673 | { | |
2674 | struct sk_buff *skb; | |
2675 | struct ieee80211_mgmt *mgmt; | |
2676 | struct ieee80211_local *local = sdata->local; | |
2677 | int freq; | |
2678 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2679 | sizeof(mgmt->u.action.u.chan_switch); | |
2680 | u8 *pos; | |
2681 | ||
2682 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2683 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2684 | return -EOPNOTSUPP; | |
2685 | ||
2686 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2687 | 5 + /* channel switch announcement element */ | |
2688 | 3 + /* secondary channel offset element */ | |
2689 | 8); /* mesh channel switch parameters element */ | |
2690 | if (!skb) | |
2691 | return -ENOMEM; | |
2692 | ||
2693 | skb_reserve(skb, local->tx_headroom); | |
2694 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2695 | memset(mgmt, 0, hdr_len); | |
2696 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2697 | IEEE80211_STYPE_ACTION); | |
2698 | ||
2699 | eth_broadcast_addr(mgmt->da); | |
2700 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2701 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2702 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2703 | } else { | |
2704 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2705 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2706 | } | |
2707 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2708 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2709 | pos = skb_put(skb, 5); | |
2710 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2711 | *pos++ = 3; /* IE length */ | |
2712 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2713 | freq = csa_settings->chandef.chan->center_freq; | |
2714 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2715 | *pos++ = csa_settings->count; /* count */ | |
2716 | ||
2717 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2718 | enum nl80211_channel_type ch_type; | |
2719 | ||
2720 | skb_put(skb, 3); | |
2721 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2722 | *pos++ = 1; /* IE length */ | |
2723 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2724 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2725 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2726 | else | |
2727 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2728 | } | |
2729 | ||
2730 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2731 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2732 | |
2733 | skb_put(skb, 8); | |
2734 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2735 | *pos++ = 6; /* IE length */ | |
2736 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2737 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2738 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2739 | *pos++ |= csa_settings->block_tx ? | |
2740 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2741 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2742 | pos += 2; | |
ca91dc97 | 2743 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2744 | pos += 2; |
c6da674a CYY |
2745 | } |
2746 | ||
2747 | ieee80211_tx_skb(sdata, skb); | |
2748 | return 0; | |
2749 | } | |
2475b1cc MS |
2750 | |
2751 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2752 | { | |
2753 | return !(cs == NULL || cs->cipher == 0 || | |
2754 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2755 | cs->hdr_len <= cs->key_idx_off || | |
2756 | cs->key_idx_shift > 7 || | |
2757 | cs->key_idx_mask == 0); | |
2758 | } | |
2759 | ||
2760 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2761 | { | |
2762 | int i; | |
2763 | ||
2764 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2765 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2766 | ||
2767 | for (i = 0; i < n; i++) | |
2768 | if (!ieee80211_cs_valid(&cs[i])) | |
2769 | return false; | |
2770 | ||
2771 | return true; | |
2772 | } | |
2773 | ||
2774 | const struct ieee80211_cipher_scheme * | |
2775 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2776 | enum nl80211_iftype iftype) | |
2777 | { | |
2778 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2779 | int n = local->hw.n_cipher_schemes; | |
2780 | int i; | |
2781 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2782 | ||
2783 | for (i = 0; i < n; i++) { | |
2784 | if (l[i].cipher == cipher) { | |
2785 | cs = &l[i]; | |
2786 | break; | |
2787 | } | |
2788 | } | |
2789 | ||
2790 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2791 | return NULL; | |
2792 | ||
2793 | return cs; | |
2794 | } | |
2795 | ||
2796 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2797 | struct cfg80211_crypto_settings *crypto, | |
2798 | enum nl80211_iftype iftype) | |
2799 | { | |
2800 | const struct ieee80211_cipher_scheme *cs; | |
2801 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2802 | int i; | |
2803 | ||
2804 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2805 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2806 | iftype); | |
2807 | ||
2808 | if (cs && headroom < cs->hdr_len) | |
2809 | headroom = cs->hdr_len; | |
2810 | } | |
2811 | ||
2812 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2813 | if (cs && headroom < cs->hdr_len) | |
2814 | headroom = cs->hdr_len; | |
2815 | ||
2816 | return headroom; | |
2817 | } | |
a7022e65 FF |
2818 | |
2819 | static bool | |
2820 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
2821 | { | |
2822 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
2823 | int skip; | |
2824 | ||
2825 | if (end > 0) | |
2826 | return false; | |
2827 | ||
2828 | /* End time is in the past, check for repetitions */ | |
2829 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
2830 | if (data->count[i] < 255) { | |
2831 | if (data->count[i] <= skip) { | |
2832 | data->count[i] = 0; | |
2833 | return false; | |
2834 | } | |
2835 | ||
2836 | data->count[i] -= skip; | |
2837 | } | |
2838 | ||
2839 | data->desc[i].start += skip * data->desc[i].interval; | |
2840 | ||
2841 | return true; | |
2842 | } | |
2843 | ||
2844 | static bool | |
2845 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
2846 | s32 *offset) | |
2847 | { | |
2848 | bool ret = false; | |
2849 | int i; | |
2850 | ||
2851 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2852 | s32 cur; | |
2853 | ||
2854 | if (!data->count[i]) | |
2855 | continue; | |
2856 | ||
2857 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
2858 | ret = true; | |
2859 | ||
2860 | cur = data->desc[i].start - tsf; | |
2861 | if (cur > *offset) | |
2862 | continue; | |
2863 | ||
2864 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
2865 | if (cur > *offset) | |
2866 | *offset = cur; | |
2867 | } | |
2868 | ||
2869 | return ret; | |
2870 | } | |
2871 | ||
2872 | static u32 | |
2873 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
2874 | { | |
2875 | s32 offset = 0; | |
2876 | int tries = 0; | |
2877 | /* | |
2878 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
2879 | * descriptors cover the full time period. | |
2880 | */ | |
2881 | int max_tries = 5; | |
2882 | ||
2883 | ieee80211_extend_absent_time(data, tsf, &offset); | |
2884 | do { | |
2885 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
2886 | break; | |
2887 | ||
2888 | tries++; | |
2889 | } while (tries < max_tries); | |
2890 | ||
2891 | return offset; | |
2892 | } | |
2893 | ||
2894 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
2895 | { | |
2896 | u32 next_offset = BIT(31) - 1; | |
2897 | int i; | |
2898 | ||
2899 | data->absent = 0; | |
2900 | data->has_next_tsf = false; | |
2901 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2902 | s32 start; | |
2903 | ||
2904 | if (!data->count[i]) | |
2905 | continue; | |
2906 | ||
2907 | ieee80211_extend_noa_desc(data, tsf, i); | |
2908 | start = data->desc[i].start - tsf; | |
2909 | if (start <= 0) | |
2910 | data->absent |= BIT(i); | |
2911 | ||
2912 | if (next_offset > start) | |
2913 | next_offset = start; | |
2914 | ||
2915 | data->has_next_tsf = true; | |
2916 | } | |
2917 | ||
2918 | if (data->absent) | |
2919 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
2920 | ||
2921 | data->next_tsf = tsf + next_offset; | |
2922 | } | |
2923 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
2924 | ||
2925 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
2926 | struct ieee80211_noa_data *data, u32 tsf) | |
2927 | { | |
2928 | int ret = 0; | |
2929 | int i; | |
2930 | ||
2931 | memset(data, 0, sizeof(*data)); | |
2932 | ||
2933 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2934 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
2935 | ||
2936 | if (!desc->count || !desc->duration) | |
2937 | continue; | |
2938 | ||
2939 | data->count[i] = desc->count; | |
2940 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
2941 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
2942 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
2943 | ||
2944 | if (data->count[i] > 1 && | |
2945 | data->desc[i].interval < data->desc[i].duration) | |
2946 | continue; | |
2947 | ||
2948 | ieee80211_extend_noa_desc(data, tsf, i); | |
2949 | ret++; | |
2950 | } | |
2951 | ||
2952 | if (ret) | |
2953 | ieee80211_update_p2p_noa(data, tsf); | |
2954 | ||
2955 | return ret; | |
2956 | } | |
2957 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
2958 | |
2959 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
2960 | struct ieee80211_sub_if_data *sdata) | |
2961 | { | |
2962 | u64 tsf = drv_get_tsf(local, sdata); | |
2963 | u64 dtim_count = 0; | |
2964 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
2965 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
2966 | struct ps_data *ps; | |
2967 | u8 bcns_from_dtim; | |
2968 | ||
2969 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
2970 | return; | |
2971 | ||
2972 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
2973 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
2974 | if (!sdata->bss) | |
2975 | return; | |
2976 | ||
2977 | ps = &sdata->bss->ps; | |
2978 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2979 | ps = &sdata->u.mesh.ps; | |
2980 | } else { | |
2981 | return; | |
2982 | } | |
2983 | ||
2984 | /* | |
2985 | * actually finds last dtim_count, mac80211 will update in | |
2986 | * __beacon_add_tim(). | |
2987 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
2988 | */ | |
2989 | do_div(tsf, beacon_int); | |
2990 | bcns_from_dtim = do_div(tsf, dtim_period); | |
2991 | /* just had a DTIM */ | |
2992 | if (!bcns_from_dtim) | |
2993 | dtim_count = 0; | |
2994 | else | |
2995 | dtim_count = dtim_period - bcns_from_dtim; | |
2996 | ||
2997 | ps->dtim_count = dtim_count; | |
2998 | } | |
73de86a3 | 2999 | |
71e6195e MK |
3000 | static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, |
3001 | struct ieee80211_chanctx *ctx) | |
3002 | { | |
3003 | struct ieee80211_sub_if_data *sdata; | |
3004 | u8 radar_detect = 0; | |
3005 | ||
3006 | lockdep_assert_held(&local->chanctx_mtx); | |
3007 | ||
3008 | if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) | |
3009 | return 0; | |
3010 | ||
3011 | list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) | |
3012 | if (sdata->reserved_radar_required) | |
3013 | radar_detect |= BIT(sdata->reserved_chandef.width); | |
3014 | ||
3015 | /* | |
3016 | * An in-place reservation context should not have any assigned vifs | |
3017 | * until it replaces the other context. | |
3018 | */ | |
3019 | WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && | |
3020 | !list_empty(&ctx->assigned_vifs)); | |
3021 | ||
3022 | list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) | |
3023 | if (sdata->radar_required) | |
3024 | radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); | |
3025 | ||
3026 | return radar_detect; | |
3027 | } | |
3028 | ||
73de86a3 LC |
3029 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, |
3030 | const struct cfg80211_chan_def *chandef, | |
3031 | enum ieee80211_chanctx_mode chanmode, | |
3032 | u8 radar_detect) | |
3033 | { | |
3034 | struct ieee80211_local *local = sdata->local; | |
3035 | struct ieee80211_sub_if_data *sdata_iter; | |
3036 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
3037 | int num[NUM_NL80211_IFTYPES]; | |
3038 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 3039 | int num_different_channels = 0; |
73de86a3 LC |
3040 | int total = 1; |
3041 | ||
3042 | lockdep_assert_held(&local->chanctx_mtx); | |
3043 | ||
3044 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
3045 | return -EINVAL; | |
3046 | ||
b6a55015 LC |
3047 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
3048 | !chandef->chan)) | |
73de86a3 LC |
3049 | return -EINVAL; |
3050 | ||
b6a55015 LC |
3051 | if (chandef) |
3052 | num_different_channels = 1; | |
3053 | ||
73de86a3 LC |
3054 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
3055 | return -EINVAL; | |
3056 | ||
3057 | /* Always allow software iftypes */ | |
3058 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
3059 | if (radar_detect) | |
3060 | return -EINVAL; | |
3061 | return 0; | |
3062 | } | |
3063 | ||
3064 | memset(num, 0, sizeof(num)); | |
3065 | ||
3066 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
3067 | num[iftype] = 1; | |
3068 | ||
3069 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3070 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3071 | continue; | |
71e6195e | 3072 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
73de86a3 LC |
3073 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { |
3074 | num_different_channels++; | |
3075 | continue; | |
3076 | } | |
b6a55015 | 3077 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
3078 | cfg80211_chandef_compatible(chandef, |
3079 | &ctx->conf.def)) | |
3080 | continue; | |
3081 | num_different_channels++; | |
3082 | } | |
3083 | ||
3084 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
3085 | struct wireless_dev *wdev_iter; | |
3086 | ||
3087 | wdev_iter = &sdata_iter->wdev; | |
3088 | ||
3089 | if (sdata_iter == sdata || | |
3090 | rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL || | |
3091 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) | |
3092 | continue; | |
3093 | ||
3094 | num[wdev_iter->iftype]++; | |
3095 | total++; | |
3096 | } | |
3097 | ||
3098 | if (total == 1 && !radar_detect) | |
3099 | return 0; | |
3100 | ||
3101 | return cfg80211_check_combinations(local->hw.wiphy, | |
3102 | num_different_channels, | |
3103 | radar_detect, num); | |
3104 | } | |
6fa001bc MK |
3105 | |
3106 | static void | |
3107 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
3108 | void *data) | |
3109 | { | |
3110 | u32 *max_num_different_channels = data; | |
3111 | ||
3112 | *max_num_different_channels = max(*max_num_different_channels, | |
3113 | c->num_different_channels); | |
3114 | } | |
3115 | ||
3116 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
3117 | { | |
3118 | struct ieee80211_sub_if_data *sdata; | |
3119 | int num[NUM_NL80211_IFTYPES] = {}; | |
3120 | struct ieee80211_chanctx *ctx; | |
3121 | int num_different_channels = 0; | |
3122 | u8 radar_detect = 0; | |
3123 | u32 max_num_different_channels = 1; | |
3124 | int err; | |
3125 | ||
3126 | lockdep_assert_held(&local->chanctx_mtx); | |
3127 | ||
3128 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3129 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3130 | continue; | |
3131 | ||
6fa001bc MK |
3132 | num_different_channels++; |
3133 | ||
71e6195e | 3134 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
6fa001bc MK |
3135 | } |
3136 | ||
3137 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3138 | num[sdata->wdev.iftype]++; | |
3139 | ||
3140 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
3141 | num_different_channels, radar_detect, | |
3142 | num, ieee80211_iter_max_chans, | |
3143 | &max_num_different_channels); | |
3144 | if (err < 0) | |
3145 | return err; | |
3146 | ||
3147 | return max_num_different_channels; | |
3148 | } | |
40b861a0 AN |
3149 | |
3150 | u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) | |
3151 | { | |
3152 | *buf++ = WLAN_EID_VENDOR_SPECIFIC; | |
3153 | *buf++ = 7; /* len */ | |
3154 | *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
3155 | *buf++ = 0x50; | |
3156 | *buf++ = 0xf2; | |
3157 | *buf++ = 2; /* WME */ | |
3158 | *buf++ = 0; /* WME info */ | |
3159 | *buf++ = 1; /* WME ver */ | |
3160 | *buf++ = qosinfo; /* U-APSD no in use */ | |
3161 | ||
3162 | return buf; | |
3163 | } |