Commit | Line | Data |
---|---|---|
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 |
f4a0f0c5 | 7 | * Copyright (C) 2015-2016 Intel Deutschland GmbH |
c2d1560a JB |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * utilities for mac80211 | |
14 | */ | |
15 | ||
16 | #include <net/mac80211.h> | |
17 | #include <linux/netdevice.h> | |
bc3b2d7f | 18 | #include <linux/export.h> |
c2d1560a JB |
19 | #include <linux/types.h> |
20 | #include <linux/slab.h> | |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/etherdevice.h> | |
23 | #include <linux/if_arp.h> | |
c2d1560a | 24 | #include <linux/bitmap.h> |
dd76986b | 25 | #include <linux/crc32.h> |
881d966b | 26 | #include <net/net_namespace.h> |
c2d1560a | 27 | #include <net/cfg80211.h> |
dabeb344 | 28 | #include <net/rtnetlink.h> |
c2d1560a JB |
29 | |
30 | #include "ieee80211_i.h" | |
24487981 | 31 | #include "driver-ops.h" |
2c8dccc7 | 32 | #include "rate.h" |
ee385855 | 33 | #include "mesh.h" |
c2d1560a | 34 | #include "wme.h" |
f2753ddb | 35 | #include "led.h" |
fffd0934 | 36 | #include "wep.h" |
c2d1560a JB |
37 | |
38 | /* privid for wiphys to determine whether they belong to us or not */ | |
8a47cea7 | 39 | const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; |
c2d1560a | 40 | |
9a95371a LR |
41 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
42 | { | |
43 | struct ieee80211_local *local; | |
44 | BUG_ON(!wiphy); | |
45 | ||
46 | local = wiphy_priv(wiphy); | |
47 | return &local->hw; | |
48 | } | |
49 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 50 | |
5cf121c3 | 51 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 52 | { |
252b86c4 | 53 | struct sk_buff *skb; |
2de8e0d9 JB |
54 | struct ieee80211_hdr *hdr; |
55 | ||
252b86c4 | 56 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
57 | hdr = (struct ieee80211_hdr *) skb->data; |
58 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 59 | } |
c2d1560a JB |
60 | } |
61 | ||
57fbcce3 | 62 | int ieee80211_frame_duration(enum nl80211_band band, size_t len, |
438b61b7 SW |
63 | int rate, int erp, int short_preamble, |
64 | int shift) | |
c2d1560a JB |
65 | { |
66 | int dur; | |
67 | ||
68 | /* calculate duration (in microseconds, rounded up to next higher | |
69 | * integer if it includes a fractional microsecond) to send frame of | |
70 | * len bytes (does not include FCS) at the given rate. Duration will | |
71 | * also include SIFS. | |
72 | * | |
73 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
74 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
75 | * |
76 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
77 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
78 | */ |
79 | ||
57fbcce3 | 80 | if (band == NL80211_BAND_5GHZ || erp) { |
c2d1560a JB |
81 | /* |
82 | * OFDM: | |
83 | * | |
84 | * N_DBPS = DATARATE x 4 | |
85 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
86 | * (16 = SIGNAL time, 6 = tail bits) | |
87 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
88 | * | |
89 | * T_SYM = 4 usec | |
438b61b7 | 90 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
91 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
92 | * signal ext = 6 usec | |
93 | */ | |
c2d1560a | 94 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
95 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
96 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
97 | |
98 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
99 | * * times 4 for 5 MHz | |
100 | * * times 2 for 10 MHz | |
101 | */ | |
102 | dur *= 1 << shift; | |
2103dec1 SW |
103 | |
104 | /* rates should already consider the channel bandwidth, | |
105 | * don't apply divisor again. | |
106 | */ | |
107 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
108 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
109 | } else { |
110 | /* | |
111 | * 802.11b or 802.11g with 802.11b compatibility: | |
112 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
113 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
114 | * | |
115 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
116 | * aSIFSTime = 10 usec | |
117 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
118 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
119 | */ | |
120 | dur = 10; /* aSIFSTime = 10 usec */ | |
121 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
122 | ||
123 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
124 | } | |
125 | ||
126 | return dur; | |
127 | } | |
128 | ||
129 | /* Exported duration function for driver use */ | |
32bfd35d JB |
130 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
131 | struct ieee80211_vif *vif, | |
57fbcce3 | 132 | enum nl80211_band band, |
8318d78a JB |
133 | size_t frame_len, |
134 | struct ieee80211_rate *rate) | |
c2d1560a | 135 | { |
25d834e1 | 136 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 137 | u16 dur; |
438b61b7 | 138 | int erp, shift = 0; |
25d834e1 | 139 | bool short_preamble = false; |
c2d1560a | 140 | |
8318d78a | 141 | erp = 0; |
25d834e1 JB |
142 | if (vif) { |
143 | sdata = vif_to_sdata(vif); | |
bda3933a | 144 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
145 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
146 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 147 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 148 | } |
8318d78a | 149 | |
4ee73f33 | 150 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 151 | short_preamble, shift); |
c2d1560a JB |
152 | |
153 | return cpu_to_le16(dur); | |
154 | } | |
155 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
156 | ||
32bfd35d JB |
157 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
158 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 159 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
160 | { |
161 | struct ieee80211_local *local = hw_to_local(hw); | |
162 | struct ieee80211_rate *rate; | |
25d834e1 | 163 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 164 | bool short_preamble; |
2103dec1 | 165 | int erp, shift = 0, bitrate; |
c2d1560a | 166 | u16 dur; |
2e92e6f2 JB |
167 | struct ieee80211_supported_band *sband; |
168 | ||
4ee73f33 | 169 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 170 | |
25d834e1 | 171 | short_preamble = false; |
7e9ed188 | 172 | |
e039fa4a | 173 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
174 | |
175 | erp = 0; | |
25d834e1 JB |
176 | if (vif) { |
177 | sdata = vif_to_sdata(vif); | |
bda3933a | 178 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
179 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
180 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 181 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 182 | } |
c2d1560a | 183 | |
2103dec1 SW |
184 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
185 | ||
c2d1560a | 186 | /* CTS duration */ |
2103dec1 | 187 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 188 | erp, short_preamble, shift); |
c2d1560a | 189 | /* Data frame duration */ |
2103dec1 | 190 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 191 | erp, short_preamble, shift); |
c2d1560a | 192 | /* ACK duration */ |
2103dec1 | 193 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 194 | erp, short_preamble, shift); |
c2d1560a JB |
195 | |
196 | return cpu_to_le16(dur); | |
197 | } | |
198 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
199 | ||
32bfd35d JB |
200 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
201 | struct ieee80211_vif *vif, | |
c2d1560a | 202 | size_t frame_len, |
e039fa4a | 203 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
204 | { |
205 | struct ieee80211_local *local = hw_to_local(hw); | |
206 | struct ieee80211_rate *rate; | |
25d834e1 | 207 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 208 | bool short_preamble; |
2103dec1 | 209 | int erp, shift = 0, bitrate; |
c2d1560a | 210 | u16 dur; |
2e92e6f2 JB |
211 | struct ieee80211_supported_band *sband; |
212 | ||
4ee73f33 | 213 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 214 | |
25d834e1 | 215 | short_preamble = false; |
7e9ed188 | 216 | |
e039fa4a | 217 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 218 | erp = 0; |
25d834e1 JB |
219 | if (vif) { |
220 | sdata = vif_to_sdata(vif); | |
bda3933a | 221 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
222 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
223 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 224 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 225 | } |
c2d1560a | 226 | |
2103dec1 SW |
227 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
228 | ||
c2d1560a | 229 | /* Data frame duration */ |
2103dec1 | 230 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 231 | erp, short_preamble, shift); |
e039fa4a | 232 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 233 | /* ACK duration */ |
2103dec1 | 234 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 235 | erp, short_preamble, shift); |
c2d1560a JB |
236 | } |
237 | ||
238 | return cpu_to_le16(dur); | |
239 | } | |
240 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
241 | ||
3a25a8c8 JB |
242 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
243 | { | |
244 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
245 | int n_acs = IEEE80211_NUM_ACS; |
246 | ||
80a83cfc MK |
247 | if (local->ops->wake_tx_queue) |
248 | return; | |
249 | ||
a6f38ac3 JB |
250 | if (local->hw.queues < IEEE80211_NUM_ACS) |
251 | n_acs = 1; | |
3a25a8c8 JB |
252 | |
253 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
254 | int ac; | |
255 | ||
f142c6b9 JB |
256 | if (!sdata->dev) |
257 | continue; | |
258 | ||
3a25a8c8 JB |
259 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
260 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
261 | continue; | |
262 | ||
a6f38ac3 | 263 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
264 | int ac_queue = sdata->vif.hw_queue[ac]; |
265 | ||
266 | if (ac_queue == queue || | |
267 | (sdata->vif.cab_queue == queue && | |
268 | local->queue_stop_reasons[ac_queue] == 0 && | |
269 | skb_queue_empty(&local->pending[ac_queue]))) | |
270 | netif_wake_subqueue(sdata->dev, ac); | |
271 | } | |
272 | } | |
273 | } | |
274 | ||
ce7c9111 | 275 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
276 | enum queue_stop_reason reason, |
277 | bool refcounted) | |
c2d1560a JB |
278 | { |
279 | struct ieee80211_local *local = hw_to_local(hw); | |
280 | ||
b5878a2d JB |
281 | trace_wake_queue(local, queue, reason); |
282 | ||
e4e72fb4 JB |
283 | if (WARN_ON(queue >= hw->queues)) |
284 | return; | |
ce7c9111 | 285 | |
ada15125 JB |
286 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
287 | return; | |
288 | ||
856142cd | 289 | if (!refcounted) { |
cca07b00 | 290 | local->q_stop_reasons[queue][reason] = 0; |
856142cd | 291 | } else { |
cca07b00 | 292 | local->q_stop_reasons[queue][reason]--; |
856142cd JB |
293 | if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) |
294 | local->q_stop_reasons[queue][reason] = 0; | |
295 | } | |
cca07b00 LC |
296 | |
297 | if (local->q_stop_reasons[queue][reason] == 0) | |
298 | __clear_bit(reason, &local->queue_stop_reasons[queue]); | |
96f5e66e JB |
299 | |
300 | if (local->queue_stop_reasons[queue] != 0) | |
301 | /* someone still has this queue stopped */ | |
302 | return; | |
303 | ||
7236fe29 JB |
304 | if (skb_queue_empty(&local->pending[queue])) { |
305 | rcu_read_lock(); | |
3a25a8c8 | 306 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
307 | rcu_read_unlock(); |
308 | } else | |
3b8d81e0 | 309 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 310 | } |
ce7c9111 | 311 | |
96f5e66e | 312 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
313 | enum queue_stop_reason reason, |
314 | bool refcounted) | |
ce7c9111 KV |
315 | { |
316 | struct ieee80211_local *local = hw_to_local(hw); | |
317 | unsigned long flags; | |
318 | ||
319 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 320 | __ieee80211_wake_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
321 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
322 | } | |
323 | ||
324 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
325 | { | |
326 | ieee80211_wake_queue_by_reason(hw, queue, | |
cca07b00 LC |
327 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
328 | false); | |
ce7c9111 | 329 | } |
c2d1560a JB |
330 | EXPORT_SYMBOL(ieee80211_wake_queue); |
331 | ||
ce7c9111 | 332 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
333 | enum queue_stop_reason reason, |
334 | bool refcounted) | |
c2d1560a JB |
335 | { |
336 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 337 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 338 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 339 | |
b5878a2d JB |
340 | trace_stop_queue(local, queue, reason); |
341 | ||
e4e72fb4 JB |
342 | if (WARN_ON(queue >= hw->queues)) |
343 | return; | |
96f5e66e | 344 | |
cca07b00 LC |
345 | if (!refcounted) |
346 | local->q_stop_reasons[queue][reason] = 1; | |
347 | else | |
348 | local->q_stop_reasons[queue][reason]++; | |
ada15125 | 349 | |
cca07b00 LC |
350 | if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
351 | return; | |
cf0277e7 | 352 | |
80a83cfc MK |
353 | if (local->ops->wake_tx_queue) |
354 | return; | |
355 | ||
a6f38ac3 JB |
356 | if (local->hw.queues < IEEE80211_NUM_ACS) |
357 | n_acs = 1; | |
358 | ||
cf0277e7 | 359 | rcu_read_lock(); |
3a25a8c8 JB |
360 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
361 | int ac; | |
362 | ||
f142c6b9 JB |
363 | if (!sdata->dev) |
364 | continue; | |
365 | ||
a6f38ac3 | 366 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
367 | if (sdata->vif.hw_queue[ac] == queue || |
368 | sdata->vif.cab_queue == queue) | |
369 | netif_stop_subqueue(sdata->dev, ac); | |
370 | } | |
371 | } | |
cf0277e7 | 372 | rcu_read_unlock(); |
c2d1560a | 373 | } |
ce7c9111 | 374 | |
96f5e66e | 375 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
376 | enum queue_stop_reason reason, |
377 | bool refcounted) | |
ce7c9111 KV |
378 | { |
379 | struct ieee80211_local *local = hw_to_local(hw); | |
380 | unsigned long flags; | |
381 | ||
382 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 383 | __ieee80211_stop_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
384 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
385 | } | |
386 | ||
387 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
388 | { | |
389 | ieee80211_stop_queue_by_reason(hw, queue, | |
cca07b00 LC |
390 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
391 | false); | |
ce7c9111 | 392 | } |
c2d1560a JB |
393 | EXPORT_SYMBOL(ieee80211_stop_queue); |
394 | ||
8f77f384 JB |
395 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
396 | struct sk_buff *skb) | |
397 | { | |
398 | struct ieee80211_hw *hw = &local->hw; | |
399 | unsigned long flags; | |
a7bc376c | 400 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 401 | int queue = info->hw_queue; |
a7bc376c JB |
402 | |
403 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 404 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
405 | return; |
406 | } | |
8f77f384 JB |
407 | |
408 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 LC |
409 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
410 | false); | |
3b8d81e0 | 411 | __skb_queue_tail(&local->pending[queue], skb); |
cca07b00 LC |
412 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
413 | false); | |
8f77f384 JB |
414 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
415 | } | |
416 | ||
e3685e03 JB |
417 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
418 | struct sk_buff_head *skbs) | |
8f77f384 JB |
419 | { |
420 | struct ieee80211_hw *hw = &local->hw; | |
421 | struct sk_buff *skb; | |
422 | unsigned long flags; | |
b0b97a8a | 423 | int queue, i; |
8f77f384 JB |
424 | |
425 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 426 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
427 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
428 | ||
429 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 430 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
431 | continue; |
432 | } | |
433 | ||
3a25a8c8 | 434 | queue = info->hw_queue; |
4644ae89 JB |
435 | |
436 | __ieee80211_stop_queue(hw, queue, | |
cca07b00 LC |
437 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
438 | false); | |
4644ae89 | 439 | |
3b8d81e0 | 440 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
441 | } |
442 | ||
3b8d81e0 | 443 | for (i = 0; i < hw->queues; i++) |
8f77f384 | 444 | __ieee80211_wake_queue(hw, i, |
cca07b00 LC |
445 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
446 | false); | |
8f77f384 | 447 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
448 | } |
449 | ||
ce7c9111 | 450 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 451 | unsigned long queues, |
cca07b00 LC |
452 | enum queue_stop_reason reason, |
453 | bool refcounted) | |
c2d1560a | 454 | { |
ce7c9111 KV |
455 | struct ieee80211_local *local = hw_to_local(hw); |
456 | unsigned long flags; | |
c2d1560a JB |
457 | int i; |
458 | ||
ce7c9111 KV |
459 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
460 | ||
445ea4e8 | 461 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 462 | __ieee80211_stop_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
463 | |
464 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
465 | } | |
466 | ||
467 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
468 | { | |
445ea4e8 | 469 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
470 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
471 | false); | |
c2d1560a JB |
472 | } |
473 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
474 | ||
92ab8535 TW |
475 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
476 | { | |
477 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
478 | unsigned long flags; |
479 | int ret; | |
96f5e66e | 480 | |
e4e72fb4 JB |
481 | if (WARN_ON(queue >= hw->queues)) |
482 | return true; | |
96f5e66e | 483 | |
3b8d81e0 | 484 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
485 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
486 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
487 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
488 | return ret; | |
92ab8535 TW |
489 | } |
490 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
491 | ||
ce7c9111 | 492 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 493 | unsigned long queues, |
cca07b00 LC |
494 | enum queue_stop_reason reason, |
495 | bool refcounted) | |
c2d1560a | 496 | { |
ce7c9111 KV |
497 | struct ieee80211_local *local = hw_to_local(hw); |
498 | unsigned long flags; | |
c2d1560a JB |
499 | int i; |
500 | ||
ce7c9111 KV |
501 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
502 | ||
445ea4e8 | 503 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 504 | __ieee80211_wake_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
505 | |
506 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
507 | } | |
508 | ||
509 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
510 | { | |
445ea4e8 | 511 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
512 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
513 | false); | |
c2d1560a JB |
514 | } |
515 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 516 | |
26da23b6 LC |
517 | static unsigned int |
518 | ieee80211_get_vif_queues(struct ieee80211_local *local, | |
519 | struct ieee80211_sub_if_data *sdata) | |
39ecc01d | 520 | { |
26da23b6 | 521 | unsigned int queues; |
39ecc01d | 522 | |
30686bf7 | 523 | if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { |
39ecc01d JB |
524 | int ac; |
525 | ||
526 | queues = 0; | |
527 | ||
528 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
529 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
530 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
531 | queues |= BIT(sdata->vif.cab_queue); | |
532 | } else { | |
533 | /* all queues */ | |
534 | queues = BIT(local->hw.queues) - 1; | |
535 | } | |
536 | ||
26da23b6 LC |
537 | return queues; |
538 | } | |
539 | ||
4f9610d5 LK |
540 | void __ieee80211_flush_queues(struct ieee80211_local *local, |
541 | struct ieee80211_sub_if_data *sdata, | |
3b24f4c6 | 542 | unsigned int queues, bool drop) |
26da23b6 | 543 | { |
26da23b6 LC |
544 | if (!local->ops->flush) |
545 | return; | |
546 | ||
4f9610d5 LK |
547 | /* |
548 | * If no queue was set, or if the HW doesn't support | |
549 | * IEEE80211_HW_QUEUE_CONTROL - flush all queues | |
550 | */ | |
30686bf7 | 551 | if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
4f9610d5 | 552 | queues = ieee80211_get_vif_queues(local, sdata); |
26da23b6 | 553 | |
59f48fe2 | 554 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
555 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
556 | false); | |
445ea4e8 | 557 | |
3b24f4c6 | 558 | drv_flush(local, sdata, queues, drop); |
445ea4e8 | 559 | |
59f48fe2 | 560 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
561 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
562 | false); | |
39ecc01d JB |
563 | } |
564 | ||
4f9610d5 | 565 | void ieee80211_flush_queues(struct ieee80211_local *local, |
3b24f4c6 | 566 | struct ieee80211_sub_if_data *sdata, bool drop) |
4f9610d5 | 567 | { |
3b24f4c6 | 568 | __ieee80211_flush_queues(local, sdata, 0, drop); |
4f9610d5 LK |
569 | } |
570 | ||
26da23b6 LC |
571 | void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
572 | struct ieee80211_sub_if_data *sdata, | |
573 | enum queue_stop_reason reason) | |
574 | { | |
575 | ieee80211_stop_queues_by_reason(&local->hw, | |
576 | ieee80211_get_vif_queues(local, sdata), | |
577 | reason, true); | |
578 | } | |
579 | ||
580 | void ieee80211_wake_vif_queues(struct ieee80211_local *local, | |
581 | struct ieee80211_sub_if_data *sdata, | |
582 | enum queue_stop_reason reason) | |
583 | { | |
584 | ieee80211_wake_queues_by_reason(&local->hw, | |
585 | ieee80211_get_vif_queues(local, sdata), | |
586 | reason, true); | |
587 | } | |
588 | ||
3384d757 AN |
589 | static void __iterate_interfaces(struct ieee80211_local *local, |
590 | u32 iter_flags, | |
591 | void (*iterator)(void *data, u8 *mac, | |
592 | struct ieee80211_vif *vif), | |
593 | void *data) | |
dabeb344 | 594 | { |
dabeb344 | 595 | struct ieee80211_sub_if_data *sdata; |
3384d757 | 596 | bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; |
dabeb344 | 597 | |
c7c71066 | 598 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 599 | switch (sdata->vif.type) { |
05c914fe | 600 | case NL80211_IFTYPE_MONITOR: |
d8212184 | 601 | if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
602 | continue; |
603 | break; | |
05c914fe | 604 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 605 | continue; |
2ca27bcf | 606 | default: |
2f561feb ID |
607 | break; |
608 | } | |
8b2c9824 | 609 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
3384d757 | 610 | active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
8b2c9824 | 611 | continue; |
3384d757 | 612 | if (ieee80211_sdata_running(sdata) || !active_only) |
47846c9b | 613 | iterator(data, sdata->vif.addr, |
2f561feb ID |
614 | &sdata->vif); |
615 | } | |
616 | ||
c7c71066 JB |
617 | sdata = rcu_dereference_check(local->monitor_sdata, |
618 | lockdep_is_held(&local->iflist_mtx) || | |
619 | lockdep_rtnl_is_held()); | |
8b2c9824 | 620 | if (sdata && |
3384d757 | 621 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || |
8b2c9824 | 622 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
685fb72b | 623 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 624 | } |
685fb72b | 625 | |
3384d757 | 626 | void ieee80211_iterate_interfaces( |
c7c71066 JB |
627 | struct ieee80211_hw *hw, u32 iter_flags, |
628 | void (*iterator)(void *data, u8 *mac, | |
629 | struct ieee80211_vif *vif), | |
630 | void *data) | |
631 | { | |
632 | struct ieee80211_local *local = hw_to_local(hw); | |
633 | ||
634 | mutex_lock(&local->iflist_mtx); | |
3384d757 | 635 | __iterate_interfaces(local, iter_flags, iterator, data); |
c771c9d8 | 636 | mutex_unlock(&local->iflist_mtx); |
2f561feb | 637 | } |
3384d757 | 638 | EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); |
2f561feb ID |
639 | |
640 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 641 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
642 | void (*iterator)(void *data, u8 *mac, |
643 | struct ieee80211_vif *vif), | |
644 | void *data) | |
645 | { | |
646 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 647 | |
e38bad47 | 648 | rcu_read_lock(); |
3384d757 AN |
649 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
650 | iterator, data); | |
c7c71066 JB |
651 | rcu_read_unlock(); |
652 | } | |
653 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 654 | |
c7c71066 JB |
655 | void ieee80211_iterate_active_interfaces_rtnl( |
656 | struct ieee80211_hw *hw, u32 iter_flags, | |
657 | void (*iterator)(void *data, u8 *mac, | |
658 | struct ieee80211_vif *vif), | |
659 | void *data) | |
660 | { | |
661 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 662 | |
c7c71066 | 663 | ASSERT_RTNL(); |
685fb72b | 664 | |
3384d757 AN |
665 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
666 | iterator, data); | |
dabeb344 | 667 | } |
c7c71066 | 668 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 669 | |
0fc1e049 AN |
670 | static void __iterate_stations(struct ieee80211_local *local, |
671 | void (*iterator)(void *data, | |
672 | struct ieee80211_sta *sta), | |
673 | void *data) | |
674 | { | |
675 | struct sta_info *sta; | |
676 | ||
677 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
678 | if (!sta->uploaded) | |
679 | continue; | |
680 | ||
681 | iterator(data, &sta->sta); | |
682 | } | |
683 | } | |
684 | ||
685 | void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, | |
686 | void (*iterator)(void *data, | |
687 | struct ieee80211_sta *sta), | |
688 | void *data) | |
689 | { | |
690 | struct ieee80211_local *local = hw_to_local(hw); | |
691 | ||
692 | rcu_read_lock(); | |
693 | __iterate_stations(local, iterator, data); | |
694 | rcu_read_unlock(); | |
695 | } | |
696 | EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); | |
697 | ||
ad7e718c JB |
698 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
699 | { | |
700 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
701 | ||
702 | if (!ieee80211_sdata_running(sdata) || | |
703 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
704 | return NULL; | |
705 | return &sdata->vif; | |
706 | } | |
707 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
708 | ||
dc5a1ad7 EG |
709 | struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) |
710 | { | |
6513e98e JB |
711 | struct ieee80211_sub_if_data *sdata; |
712 | ||
713 | if (!vif) | |
714 | return NULL; | |
715 | ||
716 | sdata = vif_to_sdata(vif); | |
dc5a1ad7 EG |
717 | |
718 | if (!ieee80211_sdata_running(sdata) || | |
719 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
720 | return NULL; | |
721 | ||
722 | return &sdata->wdev; | |
723 | } | |
724 | EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); | |
725 | ||
42935eca LR |
726 | /* |
727 | * Nothing should have been stuffed into the workqueue during | |
4afaff17 EG |
728 | * the suspend->resume cycle. Since we can't check each caller |
729 | * of this function if we are already quiescing / suspended, | |
730 | * check here and don't WARN since this can actually happen when | |
731 | * the rx path (for example) is racing against __ieee80211_suspend | |
732 | * and suspending / quiescing was set after the rx path checked | |
733 | * them. | |
42935eca LR |
734 | */ |
735 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
736 | { | |
4afaff17 EG |
737 | if (local->quiescing || (local->suspended && !local->resuming)) { |
738 | pr_warn("queueing ieee80211 work while going to suspend\n"); | |
ceb99fe0 | 739 | return false; |
4afaff17 | 740 | } |
42935eca LR |
741 | |
742 | return true; | |
743 | } | |
744 | ||
745 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
746 | { | |
747 | struct ieee80211_local *local = hw_to_local(hw); | |
748 | ||
749 | if (!ieee80211_can_queue_work(local)) | |
750 | return; | |
751 | ||
752 | queue_work(local->workqueue, work); | |
753 | } | |
754 | EXPORT_SYMBOL(ieee80211_queue_work); | |
755 | ||
756 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
757 | struct delayed_work *dwork, | |
758 | unsigned long delay) | |
759 | { | |
760 | struct ieee80211_local *local = hw_to_local(hw); | |
761 | ||
762 | if (!ieee80211_can_queue_work(local)) | |
763 | return; | |
764 | ||
765 | queue_delayed_work(local->workqueue, dwork, delay); | |
766 | } | |
767 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
768 | ||
35d865af | 769 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
770 | struct ieee802_11_elems *elems, |
771 | u64 filter, u32 crc) | |
772 | { | |
773 | size_t left = len; | |
35d865af | 774 | const u8 *pos = start; |
dd76986b | 775 | bool calc_crc = filter != 0; |
fcff4f10 | 776 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 777 | const u8 *ie; |
dd76986b | 778 | |
fcff4f10 | 779 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
780 | memset(elems, 0, sizeof(*elems)); |
781 | elems->ie_start = start; | |
782 | elems->total_len = len; | |
783 | ||
784 | while (left >= 2) { | |
785 | u8 id, elen; | |
fcff4f10 | 786 | bool elem_parse_failed; |
dd76986b JB |
787 | |
788 | id = *pos++; | |
789 | elen = *pos++; | |
790 | left -= 2; | |
791 | ||
fcff4f10 PS |
792 | if (elen > left) { |
793 | elems->parse_error = true; | |
dd76986b | 794 | break; |
fcff4f10 PS |
795 | } |
796 | ||
9690fb16 JB |
797 | switch (id) { |
798 | case WLAN_EID_SSID: | |
799 | case WLAN_EID_SUPP_RATES: | |
800 | case WLAN_EID_FH_PARAMS: | |
801 | case WLAN_EID_DS_PARAMS: | |
802 | case WLAN_EID_CF_PARAMS: | |
803 | case WLAN_EID_TIM: | |
804 | case WLAN_EID_IBSS_PARAMS: | |
805 | case WLAN_EID_CHALLENGE: | |
806 | case WLAN_EID_RSN: | |
807 | case WLAN_EID_ERP_INFO: | |
808 | case WLAN_EID_EXT_SUPP_RATES: | |
809 | case WLAN_EID_HT_CAPABILITY: | |
810 | case WLAN_EID_HT_OPERATION: | |
811 | case WLAN_EID_VHT_CAPABILITY: | |
812 | case WLAN_EID_VHT_OPERATION: | |
813 | case WLAN_EID_MESH_ID: | |
814 | case WLAN_EID_MESH_CONFIG: | |
815 | case WLAN_EID_PEER_MGMT: | |
816 | case WLAN_EID_PREQ: | |
817 | case WLAN_EID_PREP: | |
818 | case WLAN_EID_PERR: | |
819 | case WLAN_EID_RANN: | |
820 | case WLAN_EID_CHANNEL_SWITCH: | |
821 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
822 | case WLAN_EID_COUNTRY: | |
823 | case WLAN_EID_PWR_CONSTRAINT: | |
824 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 825 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 826 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 827 | case WLAN_EID_CHAN_SWITCH_PARAM: |
9041c1fa | 828 | case WLAN_EID_EXT_CAPABILITY: |
53837584 AN |
829 | case WLAN_EID_CHAN_SWITCH_TIMING: |
830 | case WLAN_EID_LINK_ID: | |
b2e506bf JB |
831 | /* |
832 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
833 | * that if the content gets bigger it might be needed more than once | |
834 | */ | |
9690fb16 JB |
835 | if (test_bit(id, seen_elems)) { |
836 | elems->parse_error = true; | |
837 | left -= elen; | |
838 | pos += elen; | |
839 | continue; | |
840 | } | |
841 | break; | |
fcff4f10 | 842 | } |
dd76986b JB |
843 | |
844 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
845 | crc = crc32_be(crc, pos - 2, elen + 2); | |
846 | ||
fcff4f10 PS |
847 | elem_parse_failed = false; |
848 | ||
dd76986b | 849 | switch (id) { |
53837584 AN |
850 | case WLAN_EID_LINK_ID: |
851 | if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { | |
852 | elem_parse_failed = true; | |
853 | break; | |
854 | } | |
855 | elems->lnk_id = (void *)(pos - 2); | |
856 | break; | |
857 | case WLAN_EID_CHAN_SWITCH_TIMING: | |
858 | if (elen != sizeof(struct ieee80211_ch_switch_timing)) { | |
859 | elem_parse_failed = true; | |
860 | break; | |
861 | } | |
862 | elems->ch_sw_timing = (void *)pos; | |
863 | break; | |
9041c1fa AN |
864 | case WLAN_EID_EXT_CAPABILITY: |
865 | elems->ext_capab = pos; | |
866 | elems->ext_capab_len = elen; | |
867 | break; | |
dd76986b JB |
868 | case WLAN_EID_SSID: |
869 | elems->ssid = pos; | |
870 | elems->ssid_len = elen; | |
871 | break; | |
872 | case WLAN_EID_SUPP_RATES: | |
873 | elems->supp_rates = pos; | |
874 | elems->supp_rates_len = elen; | |
875 | break; | |
dd76986b | 876 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
877 | if (elen >= 1) |
878 | elems->ds_params = pos; | |
879 | else | |
880 | elem_parse_failed = true; | |
dd76986b | 881 | break; |
dd76986b JB |
882 | case WLAN_EID_TIM: |
883 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
884 | elems->tim = (void *)pos; | |
885 | elems->tim_len = elen; | |
fcff4f10 PS |
886 | } else |
887 | elem_parse_failed = true; | |
dd76986b | 888 | break; |
dd76986b JB |
889 | case WLAN_EID_CHALLENGE: |
890 | elems->challenge = pos; | |
891 | elems->challenge_len = elen; | |
892 | break; | |
893 | case WLAN_EID_VENDOR_SPECIFIC: | |
894 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
895 | pos[2] == 0xf2) { | |
896 | /* Microsoft OUI (00:50:F2) */ | |
897 | ||
898 | if (calc_crc) | |
899 | crc = crc32_be(crc, pos - 2, elen + 2); | |
900 | ||
441a33ba | 901 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
902 | /* OUI Type 2 - WMM IE */ |
903 | if (pos[4] == 0) { | |
904 | elems->wmm_info = pos; | |
905 | elems->wmm_info_len = elen; | |
906 | } else if (pos[4] == 1) { | |
907 | elems->wmm_param = pos; | |
908 | elems->wmm_param_len = elen; | |
909 | } | |
910 | } | |
911 | } | |
912 | break; | |
913 | case WLAN_EID_RSN: | |
914 | elems->rsn = pos; | |
915 | elems->rsn_len = elen; | |
916 | break; | |
917 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
918 | if (elen >= 1) |
919 | elems->erp_info = pos; | |
920 | else | |
921 | elem_parse_failed = true; | |
dd76986b JB |
922 | break; |
923 | case WLAN_EID_EXT_SUPP_RATES: | |
924 | elems->ext_supp_rates = pos; | |
925 | elems->ext_supp_rates_len = elen; | |
926 | break; | |
927 | case WLAN_EID_HT_CAPABILITY: | |
928 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
929 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
930 | else |
931 | elem_parse_failed = true; | |
dd76986b | 932 | break; |
074d46d1 JB |
933 | case WLAN_EID_HT_OPERATION: |
934 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
935 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
936 | else |
937 | elem_parse_failed = true; | |
dd76986b | 938 | break; |
818255ea MP |
939 | case WLAN_EID_VHT_CAPABILITY: |
940 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
941 | elems->vht_cap_elem = (void *)pos; | |
942 | else | |
943 | elem_parse_failed = true; | |
944 | break; | |
945 | case WLAN_EID_VHT_OPERATION: | |
946 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
947 | elems->vht_operation = (void *)pos; | |
948 | else | |
949 | elem_parse_failed = true; | |
950 | break; | |
bee7f586 JB |
951 | case WLAN_EID_OPMODE_NOTIF: |
952 | if (elen > 0) | |
953 | elems->opmode_notif = pos; | |
954 | else | |
955 | elem_parse_failed = true; | |
956 | break; | |
dd76986b JB |
957 | case WLAN_EID_MESH_ID: |
958 | elems->mesh_id = pos; | |
959 | elems->mesh_id_len = elen; | |
960 | break; | |
961 | case WLAN_EID_MESH_CONFIG: | |
962 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
963 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
964 | else |
965 | elem_parse_failed = true; | |
dd76986b JB |
966 | break; |
967 | case WLAN_EID_PEER_MGMT: | |
968 | elems->peering = pos; | |
969 | elems->peering_len = elen; | |
970 | break; | |
3f52b7e3 MP |
971 | case WLAN_EID_MESH_AWAKE_WINDOW: |
972 | if (elen >= 2) | |
973 | elems->awake_window = (void *)pos; | |
974 | break; | |
dd76986b JB |
975 | case WLAN_EID_PREQ: |
976 | elems->preq = pos; | |
977 | elems->preq_len = elen; | |
978 | break; | |
979 | case WLAN_EID_PREP: | |
980 | elems->prep = pos; | |
981 | elems->prep_len = elen; | |
982 | break; | |
983 | case WLAN_EID_PERR: | |
984 | elems->perr = pos; | |
985 | elems->perr_len = elen; | |
986 | break; | |
987 | case WLAN_EID_RANN: | |
988 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
989 | elems->rann = (void *)pos; | |
fcff4f10 PS |
990 | else |
991 | elem_parse_failed = true; | |
dd76986b JB |
992 | break; |
993 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
994 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
995 | elem_parse_failed = true; | |
996 | break; | |
997 | } | |
998 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 999 | break; |
b4f286a1 JB |
1000 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
1001 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
1002 | elem_parse_failed = true; | |
1003 | break; | |
1004 | } | |
1005 | elems->ext_chansw_ie = (void *)pos; | |
1006 | break; | |
85220d71 JB |
1007 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
1008 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
1009 | elem_parse_failed = true; | |
1010 | break; | |
1011 | } | |
1012 | elems->sec_chan_offs = (void *)pos; | |
1013 | break; | |
8f2535b9 CYY |
1014 | case WLAN_EID_CHAN_SWITCH_PARAM: |
1015 | if (elen != | |
1016 | sizeof(*elems->mesh_chansw_params_ie)) { | |
1017 | elem_parse_failed = true; | |
1018 | break; | |
1019 | } | |
1020 | elems->mesh_chansw_params_ie = (void *)pos; | |
1021 | break; | |
b2e506bf JB |
1022 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
1023 | if (!action || | |
1024 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
1025 | elem_parse_failed = true; | |
1026 | break; | |
1027 | } | |
1028 | elems->wide_bw_chansw_ie = (void *)pos; | |
1029 | break; | |
1030 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
1031 | if (action) { | |
1032 | elem_parse_failed = true; | |
1033 | break; | |
1034 | } | |
1035 | /* | |
1036 | * This is a bit tricky, but as we only care about | |
1037 | * the wide bandwidth channel switch element, so | |
1038 | * just parse it out manually. | |
1039 | */ | |
1040 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
1041 | pos, elen); | |
1042 | if (ie) { | |
1043 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
1044 | elems->wide_bw_chansw_ie = | |
1045 | (void *)(ie + 2); | |
1046 | else | |
1047 | elem_parse_failed = true; | |
1048 | } | |
1049 | break; | |
dd76986b JB |
1050 | case WLAN_EID_COUNTRY: |
1051 | elems->country_elem = pos; | |
1052 | elems->country_elem_len = elen; | |
1053 | break; | |
1054 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
1055 | if (elen != 1) { |
1056 | elem_parse_failed = true; | |
1057 | break; | |
1058 | } | |
dd76986b | 1059 | elems->pwr_constr_elem = pos; |
dd76986b | 1060 | break; |
c8d65917 SG |
1061 | case WLAN_EID_CISCO_VENDOR_SPECIFIC: |
1062 | /* Lots of different options exist, but we only care | |
1063 | * about the Dynamic Transmit Power Control element. | |
1064 | * First check for the Cisco OUI, then for the DTPC | |
1065 | * tag (0x00). | |
1066 | */ | |
1067 | if (elen < 4) { | |
1068 | elem_parse_failed = true; | |
1069 | break; | |
1070 | } | |
1071 | ||
1072 | if (pos[0] != 0x00 || pos[1] != 0x40 || | |
1073 | pos[2] != 0x96 || pos[3] != 0x00) | |
1074 | break; | |
1075 | ||
1076 | if (elen != 6) { | |
1077 | elem_parse_failed = true; | |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | if (calc_crc) | |
1082 | crc = crc32_be(crc, pos - 2, elen + 2); | |
1083 | ||
1084 | elems->cisco_dtpc_elem = pos; | |
1085 | break; | |
dd76986b | 1086 | case WLAN_EID_TIMEOUT_INTERVAL: |
79ba1d89 JB |
1087 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
1088 | elems->timeout_int = (void *)pos; | |
1089 | else | |
1090 | elem_parse_failed = true; | |
dd76986b JB |
1091 | break; |
1092 | default: | |
1093 | break; | |
1094 | } | |
1095 | ||
fcff4f10 PS |
1096 | if (elem_parse_failed) |
1097 | elems->parse_error = true; | |
1098 | else | |
5df45690 | 1099 | __set_bit(id, seen_elems); |
fcff4f10 | 1100 | |
dd76986b JB |
1101 | left -= elen; |
1102 | pos += elen; | |
1103 | } | |
1104 | ||
fcff4f10 PS |
1105 | if (left != 0) |
1106 | elems->parse_error = true; | |
1107 | ||
dd76986b JB |
1108 | return crc; |
1109 | } | |
1110 | ||
3abead59 | 1111 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
cec66283 | 1112 | bool bss_notify, bool enable_qos) |
5825fe10 JB |
1113 | { |
1114 | struct ieee80211_local *local = sdata->local; | |
1115 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 1116 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 1117 | int ac; |
cec66283 | 1118 | bool use_11b; |
239281f8 | 1119 | bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ |
aa837e1d | 1120 | int aCWmin, aCWmax; |
5825fe10 JB |
1121 | |
1122 | if (!local->ops->conf_tx) | |
1123 | return; | |
1124 | ||
54bcbc69 JB |
1125 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1126 | return; | |
1127 | ||
5825fe10 JB |
1128 | memset(&qparam, 0, sizeof(qparam)); |
1129 | ||
55de908a JB |
1130 | rcu_read_lock(); |
1131 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1132 | use_11b = (chanctx_conf && | |
57fbcce3 | 1133 | chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && |
aa837e1d | 1134 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1135 | rcu_read_unlock(); |
5825fe10 | 1136 | |
239281f8 RL |
1137 | is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); |
1138 | ||
1f4ffde8 FZ |
1139 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1140 | aCWmax = 1023; | |
1141 | if (use_11b) | |
1142 | aCWmin = 31; | |
1143 | else | |
1144 | aCWmin = 15; | |
1145 | ||
1146 | /* Confiure old 802.11b/g medium access rules. */ | |
1147 | qparam.cw_max = aCWmax; | |
1148 | qparam.cw_min = aCWmin; | |
1149 | qparam.txop = 0; | |
1150 | qparam.aifs = 2; | |
aa837e1d | 1151 | |
1f4ffde8 FZ |
1152 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1153 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1154 | if (enable_qos) { |
1155 | switch (ac) { | |
1156 | case IEEE80211_AC_BK: | |
1157 | qparam.cw_max = aCWmax; | |
1158 | qparam.cw_min = aCWmin; | |
1159 | qparam.txop = 0; | |
239281f8 RL |
1160 | if (is_ocb) |
1161 | qparam.aifs = 9; | |
1162 | else | |
1163 | qparam.aifs = 7; | |
a8ce8544 SG |
1164 | break; |
1165 | /* never happens but let's not leave undefined */ | |
1166 | default: | |
1167 | case IEEE80211_AC_BE: | |
1168 | qparam.cw_max = aCWmax; | |
1169 | qparam.cw_min = aCWmin; | |
1170 | qparam.txop = 0; | |
239281f8 RL |
1171 | if (is_ocb) |
1172 | qparam.aifs = 6; | |
1173 | else | |
1174 | qparam.aifs = 3; | |
a8ce8544 SG |
1175 | break; |
1176 | case IEEE80211_AC_VI: | |
1177 | qparam.cw_max = aCWmin; | |
1178 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
239281f8 RL |
1179 | if (is_ocb) |
1180 | qparam.txop = 0; | |
1181 | else if (use_11b) | |
a8ce8544 SG |
1182 | qparam.txop = 6016/32; |
1183 | else | |
1184 | qparam.txop = 3008/32; | |
239281f8 RL |
1185 | |
1186 | if (is_ocb) | |
1187 | qparam.aifs = 3; | |
1188 | else | |
1189 | qparam.aifs = 2; | |
a8ce8544 SG |
1190 | break; |
1191 | case IEEE80211_AC_VO: | |
1192 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1193 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
239281f8 RL |
1194 | if (is_ocb) |
1195 | qparam.txop = 0; | |
1196 | else if (use_11b) | |
a8ce8544 SG |
1197 | qparam.txop = 3264/32; |
1198 | else | |
1199 | qparam.txop = 1504/32; | |
1200 | qparam.aifs = 2; | |
1201 | break; | |
1202 | } | |
aa837e1d | 1203 | } |
5825fe10 | 1204 | |
ab13315a KV |
1205 | qparam.uapsd = false; |
1206 | ||
54bcbc69 JB |
1207 | sdata->tx_conf[ac] = qparam; |
1208 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1209 | } |
e1b3ec1a | 1210 | |
f142c6b9 JB |
1211 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1212 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1213 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1214 | if (bss_notify) |
1215 | ieee80211_bss_info_change_notify(sdata, | |
1216 | BSS_CHANGED_QOS); | |
d9734979 | 1217 | } |
5825fe10 | 1218 | } |
e50db65c | 1219 | |
46900298 | 1220 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1221 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1222 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1223 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1224 | u32 tx_flags) | |
46900298 JB |
1225 | { |
1226 | struct ieee80211_local *local = sdata->local; | |
1227 | struct sk_buff *skb; | |
1228 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1229 | int err; |
46900298 | 1230 | |
15e230ab | 1231 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
744462a9 MS |
1232 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + |
1233 | 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); | |
d15b8459 | 1234 | if (!skb) |
46900298 | 1235 | return; |
d15b8459 | 1236 | |
744462a9 | 1237 | skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); |
46900298 JB |
1238 | |
1239 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1240 | memset(mgmt, 0, 24 + 6); | |
1241 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1242 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1243 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1244 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1245 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1246 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1247 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1248 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1249 | if (extra) |
1250 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1251 | |
fffd0934 JB |
1252 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1253 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1254 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1255 | WARN_ON(err); | |
1256 | } | |
1257 | ||
1672c0e3 JB |
1258 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1259 | tx_flags; | |
62ae67be | 1260 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1261 | } |
1262 | ||
6ae16775 AQ |
1263 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1264 | const u8 *bssid, u16 stype, u16 reason, | |
1265 | bool send_frame, u8 *frame_buf) | |
1266 | { | |
1267 | struct ieee80211_local *local = sdata->local; | |
1268 | struct sk_buff *skb; | |
1269 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1270 | ||
1271 | /* build frame */ | |
1272 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1273 | mgmt->duration = 0; /* initialize only */ | |
1274 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1275 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1276 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1277 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1278 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1279 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1280 | ||
1281 | if (send_frame) { | |
1282 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1283 | IEEE80211_DEAUTH_FRAME_LEN); | |
1284 | if (!skb) | |
1285 | return; | |
1286 | ||
1287 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1288 | ||
1289 | /* copy in frame */ | |
1290 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1291 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1292 | ||
1293 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1294 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1295 | IEEE80211_SKB_CB(skb)->flags |= | |
1296 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1297 | ||
1298 | ieee80211_tx_skb(sdata, skb); | |
1299 | } | |
1300 | } | |
1301 | ||
c56ef672 DS |
1302 | static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, |
1303 | u8 *buffer, size_t buffer_len, | |
1304 | const u8 *ie, size_t ie_len, | |
57fbcce3 | 1305 | enum nl80211_band band, |
c56ef672 DS |
1306 | u32 rate_mask, |
1307 | struct cfg80211_chan_def *chandef, | |
1308 | size_t *offset) | |
de95a54b JB |
1309 | { |
1310 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1311 | u8 *pos = buffer, *end = buffer + buffer_len; |
c56ef672 | 1312 | size_t noffset; |
8e664fb3 | 1313 | int supp_rates_len, i; |
8dcb2003 JM |
1314 | u8 rates[32]; |
1315 | int num_rates; | |
1316 | int ext_rates_len; | |
2103dec1 SW |
1317 | int shift; |
1318 | u32 rate_flags; | |
40a11ca8 | 1319 | bool have_80mhz = false; |
de95a54b | 1320 | |
c56ef672 DS |
1321 | *offset = 0; |
1322 | ||
4d36ec58 | 1323 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1324 | if (WARN_ON_ONCE(!sband)) |
1325 | return 0; | |
de95a54b | 1326 | |
2103dec1 SW |
1327 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1328 | shift = ieee80211_chandef_get_shift(chandef); | |
1329 | ||
8dcb2003 JM |
1330 | num_rates = 0; |
1331 | for (i = 0; i < sband->n_bitrates; i++) { | |
1332 | if ((BIT(i) & rate_mask) == 0) | |
1333 | continue; /* skip rate */ | |
2103dec1 SW |
1334 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1335 | continue; | |
1336 | ||
1337 | rates[num_rates++] = | |
1338 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1339 | (1 << shift) * 5); | |
8dcb2003 JM |
1340 | } |
1341 | ||
1342 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1343 | |
c604b9f2 JB |
1344 | if (end - pos < 2 + supp_rates_len) |
1345 | goto out_err; | |
de95a54b | 1346 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1347 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1348 | memcpy(pos, rates, supp_rates_len); |
1349 | pos += supp_rates_len; | |
8e664fb3 JB |
1350 | |
1351 | /* insert "request information" if in custom IEs */ | |
1352 | if (ie && ie_len) { | |
1353 | static const u8 before_extrates[] = { | |
1354 | WLAN_EID_SSID, | |
1355 | WLAN_EID_SUPP_RATES, | |
1356 | WLAN_EID_REQUEST, | |
1357 | }; | |
1358 | noffset = ieee80211_ie_split(ie, ie_len, | |
1359 | before_extrates, | |
1360 | ARRAY_SIZE(before_extrates), | |
c56ef672 DS |
1361 | *offset); |
1362 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1363 | goto out_err; |
c56ef672 DS |
1364 | memcpy(pos, ie + *offset, noffset - *offset); |
1365 | pos += noffset - *offset; | |
1366 | *offset = noffset; | |
8e664fb3 JB |
1367 | } |
1368 | ||
8dcb2003 JM |
1369 | ext_rates_len = num_rates - supp_rates_len; |
1370 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1371 | if (end - pos < 2 + ext_rates_len) |
1372 | goto out_err; | |
8e664fb3 | 1373 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1374 | *pos++ = ext_rates_len; |
1375 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1376 | pos += ext_rates_len; | |
8e664fb3 JB |
1377 | } |
1378 | ||
57fbcce3 | 1379 | if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { |
c604b9f2 JB |
1380 | if (end - pos < 3) |
1381 | goto out_err; | |
651b5225 JM |
1382 | *pos++ = WLAN_EID_DS_PARAMS; |
1383 | *pos++ = 1; | |
2103dec1 SW |
1384 | *pos++ = ieee80211_frequency_to_channel( |
1385 | chandef->chan->center_freq); | |
651b5225 JM |
1386 | } |
1387 | ||
8e664fb3 JB |
1388 | /* insert custom IEs that go before HT */ |
1389 | if (ie && ie_len) { | |
1390 | static const u8 before_ht[] = { | |
1391 | WLAN_EID_SSID, | |
1392 | WLAN_EID_SUPP_RATES, | |
1393 | WLAN_EID_REQUEST, | |
1394 | WLAN_EID_EXT_SUPP_RATES, | |
1395 | WLAN_EID_DS_PARAMS, | |
1396 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1397 | }; | |
1398 | noffset = ieee80211_ie_split(ie, ie_len, | |
1399 | before_ht, ARRAY_SIZE(before_ht), | |
c56ef672 DS |
1400 | *offset); |
1401 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1402 | goto out_err; |
c56ef672 DS |
1403 | memcpy(pos, ie + *offset, noffset - *offset); |
1404 | pos += noffset - *offset; | |
1405 | *offset = noffset; | |
de95a54b JB |
1406 | } |
1407 | ||
c604b9f2 JB |
1408 | if (sband->ht_cap.ht_supported) { |
1409 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1410 | goto out_err; | |
ef96a842 BG |
1411 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1412 | sband->ht_cap.cap); | |
c604b9f2 | 1413 | } |
5ef2d41a | 1414 | |
de95a54b JB |
1415 | /* |
1416 | * If adding more here, adjust code in main.c | |
1417 | * that calculates local->scan_ies_len. | |
1418 | */ | |
1419 | ||
4d952300 | 1420 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1421 | if (ie && ie_len) { |
4d952300 JB |
1422 | static const u8 before_vht[] = { |
1423 | WLAN_EID_SSID, | |
1424 | WLAN_EID_SUPP_RATES, | |
1425 | WLAN_EID_REQUEST, | |
1426 | WLAN_EID_EXT_SUPP_RATES, | |
1427 | WLAN_EID_DS_PARAMS, | |
1428 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1429 | WLAN_EID_HT_CAPABILITY, | |
1430 | WLAN_EID_BSS_COEX_2040, | |
1431 | WLAN_EID_EXT_CAPABILITY, | |
1432 | WLAN_EID_SSID_LIST, | |
1433 | WLAN_EID_CHANNEL_USAGE, | |
1434 | WLAN_EID_INTERWORKING, | |
1435 | /* mesh ID can't happen here */ | |
1436 | /* 60 GHz can't happen here right now */ | |
1437 | }; | |
1438 | noffset = ieee80211_ie_split(ie, ie_len, | |
1439 | before_vht, ARRAY_SIZE(before_vht), | |
c56ef672 DS |
1440 | *offset); |
1441 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1442 | goto out_err; |
c56ef672 DS |
1443 | memcpy(pos, ie + *offset, noffset - *offset); |
1444 | pos += noffset - *offset; | |
1445 | *offset = noffset; | |
de95a54b JB |
1446 | } |
1447 | ||
40a11ca8 JB |
1448 | /* Check if any channel in this sband supports at least 80 MHz */ |
1449 | for (i = 0; i < sband->n_channels; i++) { | |
fa44b988 AN |
1450 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | |
1451 | IEEE80211_CHAN_NO_80MHZ)) | |
1452 | continue; | |
1453 | ||
1454 | have_80mhz = true; | |
1455 | break; | |
40a11ca8 JB |
1456 | } |
1457 | ||
1458 | if (sband->vht_cap.vht_supported && have_80mhz) { | |
c604b9f2 JB |
1459 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) |
1460 | goto out_err; | |
ba0afa2f MP |
1461 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1462 | sband->vht_cap.cap); | |
c604b9f2 | 1463 | } |
ba0afa2f | 1464 | |
c604b9f2 JB |
1465 | return pos - buffer; |
1466 | out_err: | |
1467 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1468 | return pos - buffer; |
1469 | } | |
1470 | ||
c56ef672 DS |
1471 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1472 | size_t buffer_len, | |
1473 | struct ieee80211_scan_ies *ie_desc, | |
1474 | const u8 *ie, size_t ie_len, | |
1475 | u8 bands_used, u32 *rate_masks, | |
1476 | struct cfg80211_chan_def *chandef) | |
1477 | { | |
1478 | size_t pos = 0, old_pos = 0, custom_ie_offset = 0; | |
1479 | int i; | |
1480 | ||
1481 | memset(ie_desc, 0, sizeof(*ie_desc)); | |
1482 | ||
57fbcce3 | 1483 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
c56ef672 DS |
1484 | if (bands_used & BIT(i)) { |
1485 | pos += ieee80211_build_preq_ies_band(local, | |
1486 | buffer + pos, | |
1487 | buffer_len - pos, | |
1488 | ie, ie_len, i, | |
1489 | rate_masks[i], | |
1490 | chandef, | |
1491 | &custom_ie_offset); | |
1492 | ie_desc->ies[i] = buffer + old_pos; | |
1493 | ie_desc->len[i] = pos - old_pos; | |
1494 | old_pos = pos; | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | /* add any remaining custom IEs */ | |
1499 | if (ie && ie_len) { | |
1500 | if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, | |
1501 | "not enough space for preq custom IEs\n")) | |
1502 | return pos; | |
1503 | memcpy(buffer + pos, ie + custom_ie_offset, | |
1504 | ie_len - custom_ie_offset); | |
1505 | ie_desc->common_ies = buffer + pos; | |
1506 | ie_desc->common_ie_len = ie_len - custom_ie_offset; | |
1507 | pos += ie_len - custom_ie_offset; | |
1508 | } | |
1509 | ||
1510 | return pos; | |
1511 | }; | |
1512 | ||
a619a4c0 | 1513 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
a344d677 JB |
1514 | const u8 *src, const u8 *dst, |
1515 | u32 ratemask, | |
6b77863b | 1516 | struct ieee80211_channel *chan, |
a619a4c0 | 1517 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1518 | const u8 *ie, size_t ie_len, |
1519 | bool directed) | |
46900298 JB |
1520 | { |
1521 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1522 | struct cfg80211_chan_def chandef; |
46900298 JB |
1523 | struct sk_buff *skb; |
1524 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1525 | int ies_len; |
57fbcce3 | 1526 | u32 rate_masks[NUM_NL80211_BANDS] = {}; |
c56ef672 | 1527 | struct ieee80211_scan_ies dummy_ie_desc; |
46900298 | 1528 | |
a806c558 PS |
1529 | /* |
1530 | * Do not send DS Channel parameter for directed probe requests | |
1531 | * in order to maximize the chance that we get a response. Some | |
1532 | * badly-behaved APs don't respond when this parameter is included. | |
1533 | */ | |
2103dec1 | 1534 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1535 | if (directed) |
2103dec1 | 1536 | chandef.chan = NULL; |
a806c558 | 1537 | else |
2103dec1 | 1538 | chandef.chan = chan; |
651b5225 | 1539 | |
a344d677 JB |
1540 | skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, |
1541 | 100 + ie_len); | |
5b2bbf75 | 1542 | if (!skb) |
b9a9ada1 JB |
1543 | return NULL; |
1544 | ||
c56ef672 | 1545 | rate_masks[chan->band] = ratemask; |
b9a9ada1 | 1546 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
c56ef672 DS |
1547 | skb_tailroom(skb), &dummy_ie_desc, |
1548 | ie, ie_len, BIT(chan->band), | |
1549 | rate_masks, &chandef); | |
b9a9ada1 | 1550 | skb_put(skb, ies_len); |
7c12ce8b | 1551 | |
46900298 | 1552 | if (dst) { |
7c12ce8b | 1553 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1554 | memcpy(mgmt->da, dst, ETH_ALEN); |
1555 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1556 | } |
46900298 | 1557 | |
62ae67be | 1558 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1559 | |
a619a4c0 JO |
1560 | return skb; |
1561 | } | |
1562 | ||
a344d677 JB |
1563 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, |
1564 | const u8 *src, const u8 *dst, | |
a619a4c0 | 1565 | const u8 *ssid, size_t ssid_len, |
a806c558 | 1566 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1567 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1568 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1569 | { |
1570 | struct sk_buff *skb; | |
1571 | ||
a344d677 | 1572 | skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, |
6b77863b | 1573 | ssid, ssid_len, |
85a237fe | 1574 | ie, ie_len, directed); |
aad14ceb | 1575 | if (skb) { |
1672c0e3 | 1576 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1577 | if (scan) |
1578 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1579 | else | |
1580 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1581 | } |
46900298 JB |
1582 | } |
1583 | ||
2103dec1 | 1584 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1585 | struct ieee802_11_elems *elems, |
57fbcce3 | 1586 | enum nl80211_band band, u32 *basic_rates) |
46900298 JB |
1587 | { |
1588 | struct ieee80211_supported_band *sband; | |
46900298 | 1589 | size_t num_rates; |
2103dec1 SW |
1590 | u32 supp_rates, rate_flags; |
1591 | int i, j, shift; | |
1592 | sband = sdata->local->hw.wiphy->bands[band]; | |
1593 | ||
1594 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1595 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1596 | |
4ee73f33 MK |
1597 | if (WARN_ON(!sband)) |
1598 | return 1; | |
46900298 | 1599 | |
46900298 JB |
1600 | num_rates = sband->n_bitrates; |
1601 | supp_rates = 0; | |
1602 | for (i = 0; i < elems->supp_rates_len + | |
1603 | elems->ext_supp_rates_len; i++) { | |
1604 | u8 rate = 0; | |
1605 | int own_rate; | |
9ebb61a2 | 1606 | bool is_basic; |
46900298 JB |
1607 | if (i < elems->supp_rates_len) |
1608 | rate = elems->supp_rates[i]; | |
1609 | else if (elems->ext_supp_rates) | |
1610 | rate = elems->ext_supp_rates | |
1611 | [i - elems->supp_rates_len]; | |
1612 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1613 | is_basic = !!(rate & 0x80); |
1614 | ||
1615 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1616 | continue; | |
1617 | ||
1618 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1619 | int brate; |
1620 | if ((rate_flags & sband->bitrates[j].flags) | |
1621 | != rate_flags) | |
1622 | continue; | |
1623 | ||
1624 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1625 | 1 << shift); | |
1626 | ||
1627 | if (brate == own_rate) { | |
46900298 | 1628 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1629 | if (basic_rates && is_basic) |
1630 | *basic_rates |= BIT(j); | |
1631 | } | |
1632 | } | |
46900298 JB |
1633 | } |
1634 | return supp_rates; | |
1635 | } | |
f2753ddb | 1636 | |
84f6a01c JB |
1637 | void ieee80211_stop_device(struct ieee80211_local *local) |
1638 | { | |
1639 | ieee80211_led_radio(local, false); | |
67408c8c | 1640 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1641 | |
1642 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1643 | |
1644 | flush_workqueue(local->workqueue); | |
678f415f | 1645 | drv_stop(local); |
84f6a01c JB |
1646 | } |
1647 | ||
74430f94 JB |
1648 | static void ieee80211_flush_completed_scan(struct ieee80211_local *local, |
1649 | bool aborted) | |
1650 | { | |
1651 | /* It's possible that we don't handle the scan completion in | |
1652 | * time during suspend, so if it's still marked as completed | |
1653 | * here, queue the work and flush it to clean things up. | |
1654 | * Instead of calling the worker function directly here, we | |
1655 | * really queue it to avoid potential races with other flows | |
1656 | * scheduling the same work. | |
1657 | */ | |
1658 | if (test_bit(SCAN_COMPLETED, &local->scanning)) { | |
1659 | /* If coming from reconfiguration failure, abort the scan so | |
1660 | * we don't attempt to continue a partial HW scan - which is | |
1661 | * possible otherwise if (e.g.) the 2.4 GHz portion was the | |
1662 | * completed scan, and a 5 GHz portion is still pending. | |
1663 | */ | |
1664 | if (aborted) | |
1665 | set_bit(SCAN_ABORTED, &local->scanning); | |
1666 | ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); | |
1667 | flush_delayed_work(&local->scan_work); | |
1668 | } | |
1669 | } | |
1670 | ||
f6837ba8 JB |
1671 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1672 | { | |
1673 | struct ieee80211_sub_if_data *sdata; | |
1674 | struct ieee80211_chanctx *ctx; | |
1675 | ||
1676 | /* | |
1677 | * We get here if during resume the device can't be restarted properly. | |
1678 | * We might also get here if this happens during HW reset, which is a | |
1679 | * slightly different situation and we need to drop all connections in | |
1680 | * the latter case. | |
1681 | * | |
1682 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1683 | * warnings but at least we'll then get into a clean stopped state. | |
1684 | */ | |
1685 | ||
1686 | local->resuming = false; | |
1687 | local->suspended = false; | |
7584f88f | 1688 | local->in_reconfig = false; |
f6837ba8 | 1689 | |
74430f94 JB |
1690 | ieee80211_flush_completed_scan(local, true); |
1691 | ||
f6837ba8 JB |
1692 | /* scheduled scan clearly can't be running any more, but tell |
1693 | * cfg80211 and clear local state | |
1694 | */ | |
1695 | ieee80211_sched_scan_end(local); | |
1696 | ||
1697 | list_for_each_entry(sdata, &local->interfaces, list) | |
1698 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1699 | ||
1700 | /* Mark channel contexts as not being in the driver any more to avoid | |
1701 | * removing them from the driver during the shutdown process... | |
1702 | */ | |
1703 | mutex_lock(&local->chanctx_mtx); | |
1704 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1705 | ctx->driver_present = false; | |
1706 | mutex_unlock(&local->chanctx_mtx); | |
1707 | ||
1708 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1709 | } | |
1710 | ||
153a5fc4 SG |
1711 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1712 | struct ieee80211_sub_if_data *sdata) | |
1713 | { | |
1714 | struct ieee80211_chanctx_conf *conf; | |
1715 | struct ieee80211_chanctx *ctx; | |
1716 | ||
1717 | if (!local->use_chanctx) | |
1718 | return; | |
1719 | ||
1720 | mutex_lock(&local->chanctx_mtx); | |
1721 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1722 | lockdep_is_held(&local->chanctx_mtx)); | |
1723 | if (conf) { | |
1724 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1725 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1726 | } | |
1727 | mutex_unlock(&local->chanctx_mtx); | |
1728 | } | |
1729 | ||
1ea2c864 JB |
1730 | static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) |
1731 | { | |
1732 | struct ieee80211_local *local = sdata->local; | |
1733 | struct sta_info *sta; | |
1734 | ||
1735 | /* add STAs back */ | |
1736 | mutex_lock(&local->sta_mtx); | |
1737 | list_for_each_entry(sta, &local->sta_list, list) { | |
1738 | enum ieee80211_sta_state state; | |
1739 | ||
1740 | if (!sta->uploaded || sta->sdata != sdata) | |
1741 | continue; | |
1742 | ||
1743 | for (state = IEEE80211_STA_NOTEXIST; | |
1744 | state < sta->sta_state; state++) | |
1745 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1746 | state + 1)); | |
1747 | } | |
1748 | mutex_unlock(&local->sta_mtx); | |
1749 | } | |
1750 | ||
f2753ddb JB |
1751 | int ieee80211_reconfig(struct ieee80211_local *local) |
1752 | { | |
1753 | struct ieee80211_hw *hw = &local->hw; | |
1754 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1755 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1756 | struct sta_info *sta; |
2683d65b | 1757 | int res, i; |
d888130a | 1758 | bool reconfig_due_to_wowlan = false; |
d43c6b6e | 1759 | struct ieee80211_sub_if_data *sched_scan_sdata; |
6ea0a69c | 1760 | struct cfg80211_sched_scan_request *sched_scan_req; |
d43c6b6e | 1761 | bool sched_scan_stopped = false; |
b0485e9f | 1762 | bool suspended = local->suspended; |
d888130a | 1763 | |
0f8b8245 EP |
1764 | /* nothing to do if HW shouldn't run */ |
1765 | if (!local->open_count) | |
1766 | goto wake_up; | |
1767 | ||
8f21b0ad | 1768 | #ifdef CONFIG_PM |
b0485e9f | 1769 | if (suspended) |
ceb99fe0 | 1770 | local->resuming = true; |
f2753ddb | 1771 | |
eecc4800 | 1772 | if (local->wowlan) { |
b0485e9f EP |
1773 | /* |
1774 | * In the wowlan case, both mac80211 and the device | |
1775 | * are functional when the resume op is called, so | |
1776 | * clear local->suspended so the device could operate | |
1777 | * normally (e.g. pass rx frames). | |
1778 | */ | |
1779 | local->suspended = false; | |
eecc4800 | 1780 | res = drv_resume(local); |
27b3eb9c | 1781 | local->wowlan = false; |
eecc4800 JB |
1782 | if (res < 0) { |
1783 | local->resuming = false; | |
1784 | return res; | |
1785 | } | |
1786 | if (res == 0) | |
1787 | goto wake_up; | |
1788 | WARN_ON(res > 1); | |
1789 | /* | |
1790 | * res is 1, which means the driver requested | |
1791 | * to go through a regular reset on wakeup. | |
b0485e9f | 1792 | * restore local->suspended in this case. |
eecc4800 | 1793 | */ |
d888130a | 1794 | reconfig_due_to_wowlan = true; |
b0485e9f | 1795 | local->suspended = true; |
eecc4800 JB |
1796 | } |
1797 | #endif | |
f2753ddb | 1798 | |
43d6df00 EP |
1799 | /* |
1800 | * In case of hw_restart during suspend (without wowlan), | |
1801 | * cancel restart work, as we are reconfiguring the device | |
1802 | * anyway. | |
1803 | * Note that restart_work is scheduled on a frozen workqueue, | |
1804 | * so we can't deadlock in this case. | |
1805 | */ | |
1806 | if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) | |
1807 | cancel_work_sync(&local->restart_work); | |
1808 | ||
968a76ce EP |
1809 | local->started = false; |
1810 | ||
94f9b97b JB |
1811 | /* |
1812 | * Upon resume hardware can sometimes be goofy due to | |
1813 | * various platform / driver / bus issues, so restarting | |
1814 | * the device may at times not work immediately. Propagate | |
1815 | * the error. | |
1816 | */ | |
1817 | res = drv_start(local); | |
1818 | if (res) { | |
b0485e9f | 1819 | if (suspended) |
f6837ba8 JB |
1820 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); |
1821 | else | |
1822 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1823 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1824 | return res; |
f2753ddb JB |
1825 | } |
1826 | ||
7f281975 YAP |
1827 | /* setup fragmentation threshold */ |
1828 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1829 | ||
1830 | /* setup RTS threshold */ | |
1831 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1832 | ||
1833 | /* reset coverage class */ | |
1834 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1835 | ||
94f9b97b JB |
1836 | ieee80211_led_radio(local, true); |
1837 | ieee80211_mod_tpt_led_trig(local, | |
1838 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1839 | ||
f2753ddb | 1840 | /* add interfaces */ |
4b6f1dd6 JB |
1841 | sdata = rtnl_dereference(local->monitor_sdata); |
1842 | if (sdata) { | |
3c3e21e7 JB |
1843 | /* in HW restart it exists already */ |
1844 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1845 | res = drv_add_interface(local, sdata); |
1846 | if (WARN_ON(res)) { | |
0c2bef46 | 1847 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1848 | synchronize_net(); |
1849 | kfree(sdata); | |
1850 | } | |
1851 | } | |
1852 | ||
f2753ddb JB |
1853 | list_for_each_entry(sdata, &local->interfaces, list) { |
1854 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1855 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
c8fff3dc | 1856 | ieee80211_sdata_running(sdata)) { |
7b7eab6f | 1857 | res = drv_add_interface(local, sdata); |
c8fff3dc LC |
1858 | if (WARN_ON(res)) |
1859 | break; | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /* If adding any of the interfaces failed above, roll back and | |
1864 | * report failure. | |
1865 | */ | |
1866 | if (res) { | |
1867 | list_for_each_entry_continue_reverse(sdata, &local->interfaces, | |
1868 | list) | |
1869 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1870 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1871 | ieee80211_sdata_running(sdata)) | |
1872 | drv_remove_interface(local, sdata); | |
1873 | ieee80211_handle_reconfig_failure(local); | |
1874 | return res; | |
f2753ddb JB |
1875 | } |
1876 | ||
55de908a | 1877 | /* add channel contexts */ |
f0dea9c7 AS |
1878 | if (local->use_chanctx) { |
1879 | mutex_lock(&local->chanctx_mtx); | |
1880 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
5bcae31d MK |
1881 | if (ctx->replace_state != |
1882 | IEEE80211_CHANCTX_REPLACES_OTHER) | |
1883 | WARN_ON(drv_add_chanctx(local, ctx)); | |
f0dea9c7 | 1884 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1885 | |
7df180f7 ZG |
1886 | sdata = rtnl_dereference(local->monitor_sdata); |
1887 | if (sdata && ieee80211_sdata_running(sdata)) | |
1888 | ieee80211_assign_chanctx(local, sdata); | |
1889 | } | |
fe5f2559 | 1890 | |
f2753ddb JB |
1891 | /* reconfigure hardware */ |
1892 | ieee80211_hw_config(local, ~0); | |
1893 | ||
f2753ddb | 1894 | ieee80211_configure_filter(local); |
f2753ddb JB |
1895 | |
1896 | /* Finally also reconfigure all the BSS information */ | |
1897 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1898 | u32 changed; |
1899 | ||
9607e6b6 | 1900 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1901 | continue; |
ac8dd506 | 1902 | |
1ea2c864 JB |
1903 | ieee80211_assign_chanctx(local, sdata); |
1904 | ||
1905 | switch (sdata->vif.type) { | |
1906 | case NL80211_IFTYPE_AP_VLAN: | |
1907 | case NL80211_IFTYPE_MONITOR: | |
1908 | break; | |
1909 | default: | |
1910 | ieee80211_reconfig_stations(sdata); | |
1911 | /* fall through */ | |
1912 | case NL80211_IFTYPE_AP: /* AP stations are handled later */ | |
1913 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
1914 | drv_conf_tx(local, sdata, i, | |
1915 | &sdata->tx_conf[i]); | |
1916 | break; | |
1917 | } | |
1918 | ||
ac8dd506 JB |
1919 | /* common change flags for all interface types */ |
1920 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1921 | BSS_CHANGED_ERP_PREAMBLE | | |
1922 | BSS_CHANGED_ERP_SLOT | | |
1923 | BSS_CHANGED_HT | | |
1924 | BSS_CHANGED_BASIC_RATES | | |
1925 | BSS_CHANGED_BEACON_INT | | |
1926 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1927 | BSS_CHANGED_CQM | |
55de47f6 | 1928 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1929 | BSS_CHANGED_IDLE | |
1930 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1931 | |
b5a33d52 | 1932 | if (sdata->vif.mu_mimo_owner) |
23a1f8d4 SS |
1933 | changed |= BSS_CHANGED_MU_GROUPS; |
1934 | ||
f2753ddb JB |
1935 | switch (sdata->vif.type) { |
1936 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1937 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1938 | BSS_CHANGED_ARP_FILTER | |
1939 | BSS_CHANGED_PS; | |
c65dd147 | 1940 | |
989c6505 AB |
1941 | /* Re-send beacon info report to the driver */ |
1942 | if (sdata->u.mgd.have_beacon) | |
1943 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1944 | |
8d61ffa5 | 1945 | sdata_lock(sdata); |
ac8dd506 | 1946 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1947 | sdata_unlock(sdata); |
ac8dd506 | 1948 | break; |
6e0bd6c3 | 1949 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1950 | changed |= BSS_CHANGED_OCB; |
1951 | ieee80211_bss_info_change_notify(sdata, changed); | |
6e0bd6c3 | 1952 | break; |
f2753ddb | 1953 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1954 | changed |= BSS_CHANGED_IBSS; |
1955 | /* fall through */ | |
f2753ddb | 1956 | case NL80211_IFTYPE_AP: |
339afbf4 | 1957 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1958 | |
1041638f | 1959 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1960 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1961 | ||
1041638f JB |
1962 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1963 | drv_start_ap(local, sdata); | |
1964 | } | |
1965 | ||
7827493b | 1966 | /* fall through */ |
f2753ddb | 1967 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1968 | if (sdata->vif.bss_conf.enable_beacon) { |
1969 | changed |= BSS_CHANGED_BEACON | | |
1970 | BSS_CHANGED_BEACON_ENABLED; | |
1971 | ieee80211_bss_info_change_notify(sdata, changed); | |
1972 | } | |
f2753ddb JB |
1973 | break; |
1974 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1975 | case NL80211_IFTYPE_AP_VLAN: |
1976 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1977 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1978 | /* nothing to do */ |
f142c6b9 | 1979 | break; |
f2753ddb | 1980 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1981 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1982 | case NL80211_IFTYPE_P2P_CLIENT: |
1983 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1984 | WARN_ON(1); |
1985 | break; | |
1986 | } | |
1987 | } | |
1988 | ||
4a733ef1 | 1989 | ieee80211_recalc_ps(local); |
8e1b23b9 | 1990 | |
6e1b1b24 EP |
1991 | /* |
1992 | * The sta might be in psm against the ap (e.g. because | |
1993 | * this was the state before a hw restart), so we | |
1994 | * explicitly send a null packet in order to make sure | |
1995 | * it'll sync against the ap (and get out of psm). | |
1996 | */ | |
1997 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1998 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1999 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
2000 | continue; | |
20f544ee JB |
2001 | if (!sdata->u.mgd.associated) |
2002 | continue; | |
6e1b1b24 | 2003 | |
076cdcb1 | 2004 | ieee80211_send_nullfunc(local, sdata, false); |
6e1b1b24 EP |
2005 | } |
2006 | } | |
2007 | ||
2e8d397e AN |
2008 | /* APs are now beaconing, add back stations */ |
2009 | mutex_lock(&local->sta_mtx); | |
2010 | list_for_each_entry(sta, &local->sta_list, list) { | |
2011 | enum ieee80211_sta_state state; | |
2012 | ||
2013 | if (!sta->uploaded) | |
2014 | continue; | |
2015 | ||
2016 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
2017 | continue; | |
2018 | ||
2019 | for (state = IEEE80211_STA_NOTEXIST; | |
2020 | state < sta->sta_state; state++) | |
2021 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
2022 | state + 1)); | |
2023 | } | |
2024 | mutex_unlock(&local->sta_mtx); | |
2025 | ||
7b21aea0 | 2026 | /* add back keys */ |
f9dca80b MK |
2027 | list_for_each_entry(sdata, &local->interfaces, list) |
2028 | ieee80211_reset_crypto_tx_tailroom(sdata); | |
2029 | ||
7b21aea0 ES |
2030 | list_for_each_entry(sdata, &local->interfaces, list) |
2031 | if (ieee80211_sdata_running(sdata)) | |
2032 | ieee80211_enable_keys(sdata); | |
2033 | ||
0d440ea2 EP |
2034 | /* Reconfigure sched scan if it was interrupted by FW restart */ |
2035 | mutex_lock(&local->mtx); | |
2036 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
2037 | lockdep_is_held(&local->mtx)); | |
2038 | sched_scan_req = rcu_dereference_protected(local->sched_scan_req, | |
2039 | lockdep_is_held(&local->mtx)); | |
2040 | if (sched_scan_sdata && sched_scan_req) | |
2041 | /* | |
2042 | * Sched scan stopped, but we don't want to report it. Instead, | |
2043 | * we're trying to reschedule. However, if more than one scan | |
2044 | * plan was set, we cannot reschedule since we don't know which | |
2045 | * scan plan was currently running (and some scan plans may have | |
2046 | * already finished). | |
2047 | */ | |
2048 | if (sched_scan_req->n_scan_plans > 1 || | |
2049 | __ieee80211_request_sched_scan_start(sched_scan_sdata, | |
b9f628fc EP |
2050 | sched_scan_req)) { |
2051 | RCU_INIT_POINTER(local->sched_scan_sdata, NULL); | |
2052 | RCU_INIT_POINTER(local->sched_scan_req, NULL); | |
0d440ea2 | 2053 | sched_scan_stopped = true; |
b9f628fc | 2054 | } |
0d440ea2 EP |
2055 | mutex_unlock(&local->mtx); |
2056 | ||
2057 | if (sched_scan_stopped) | |
2058 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); | |
2059 | ||
c6209488 | 2060 | wake_up: |
470f4d61 EP |
2061 | if (local->in_reconfig) { |
2062 | local->in_reconfig = false; | |
2063 | barrier(); | |
2064 | ||
2065 | /* Restart deferred ROCs */ | |
2066 | mutex_lock(&local->mtx); | |
2067 | ieee80211_start_next_roc(local); | |
2068 | mutex_unlock(&local->mtx); | |
2069 | } | |
04800ada | 2070 | |
3c3e21e7 JB |
2071 | if (local->monitors == local->open_count && local->monitors > 0) |
2072 | ieee80211_add_virtual_monitor(local); | |
2073 | ||
2a419056 JB |
2074 | /* |
2075 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
2076 | * sessions can be established after a resume. | |
2077 | * | |
2078 | * Also tear down aggregation sessions since reconfiguring | |
2079 | * them in a hardware restart scenario is not easily done | |
2080 | * right now, and the hardware will have lost information | |
2081 | * about the sessions, but we and the AP still think they | |
2082 | * are active. This is really a workaround though. | |
2083 | */ | |
30686bf7 | 2084 | if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
2a419056 JB |
2085 | mutex_lock(&local->sta_mtx); |
2086 | ||
2087 | list_for_each_entry(sta, &local->sta_list, list) { | |
27392719 EP |
2088 | if (!local->resuming) |
2089 | ieee80211_sta_tear_down_BA_sessions( | |
2090 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 2091 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 2092 | } |
2a419056 JB |
2093 | |
2094 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 2095 | } |
74e2bd1f | 2096 | |
445ea4e8 | 2097 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
2098 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
2099 | false); | |
f2753ddb | 2100 | |
5bb644a0 JB |
2101 | /* |
2102 | * If this is for hw restart things are still running. | |
2103 | * We may want to change that later, however. | |
2104 | */ | |
b0485e9f | 2105 | if (local->open_count && (!suspended || reconfig_due_to_wowlan)) |
cf2c92d8 | 2106 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); |
8f21b0ad | 2107 | |
b0485e9f | 2108 | if (!suspended) |
5bb644a0 JB |
2109 | return 0; |
2110 | ||
2111 | #ifdef CONFIG_PM | |
ceb99fe0 | 2112 | /* first set suspended false, then resuming */ |
5bb644a0 | 2113 | local->suspended = false; |
ceb99fe0 JB |
2114 | mb(); |
2115 | local->resuming = false; | |
5bb644a0 | 2116 | |
74430f94 | 2117 | ieee80211_flush_completed_scan(local, false); |
9120d94e | 2118 | |
0f8b8245 | 2119 | if (local->open_count && !reconfig_due_to_wowlan) |
cf2c92d8 EP |
2120 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); |
2121 | ||
b8360ab8 JB |
2122 | list_for_each_entry(sdata, &local->interfaces, list) { |
2123 | if (!ieee80211_sdata_running(sdata)) | |
2124 | continue; | |
2125 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2126 | ieee80211_sta_restart(sdata); | |
2127 | } | |
2128 | ||
26d59535 | 2129 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
2130 | #else |
2131 | WARN_ON(1); | |
2132 | #endif | |
d43c6b6e | 2133 | |
f2753ddb JB |
2134 | return 0; |
2135 | } | |
42935eca | 2136 | |
95acac61 JB |
2137 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
2138 | { | |
2139 | struct ieee80211_sub_if_data *sdata; | |
2140 | struct ieee80211_local *local; | |
2141 | struct ieee80211_key *key; | |
2142 | ||
2143 | if (WARN_ON(!vif)) | |
2144 | return; | |
2145 | ||
2146 | sdata = vif_to_sdata(vif); | |
2147 | local = sdata->local; | |
2148 | ||
2149 | if (WARN_ON(!local->resuming)) | |
2150 | return; | |
2151 | ||
2152 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
2153 | return; | |
2154 | ||
2155 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
2156 | ||
2157 | mutex_lock(&local->key_mtx); | |
2158 | list_for_each_entry(key, &sdata->key_list, list) | |
2159 | key->flags |= KEY_FLAG_TAINTED; | |
2160 | mutex_unlock(&local->key_mtx); | |
2161 | } | |
2162 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
2163 | ||
04ecd257 | 2164 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 2165 | { |
04ecd257 JB |
2166 | struct ieee80211_local *local = sdata->local; |
2167 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2168 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 2169 | |
04ecd257 | 2170 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 2171 | |
04ecd257 JB |
2172 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
2173 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 2174 | |
c189a685 AO |
2175 | /* |
2176 | * This function can be called from a work, thus it may be possible | |
2177 | * that the chanctx_conf is removed (due to a disconnection, for | |
2178 | * example). | |
2179 | * So nothing should be done in such case. | |
2180 | */ | |
2181 | if (!chanctx_conf) | |
5d8e4237 | 2182 | goto unlock; |
0f78231b | 2183 | |
04ecd257 JB |
2184 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
2185 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 2186 | unlock: |
04ecd257 | 2187 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 2188 | } |
8e664fb3 | 2189 | |
21f659bf EP |
2190 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
2191 | { | |
2192 | struct ieee80211_local *local = sdata->local; | |
2193 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2194 | struct ieee80211_chanctx *chanctx; | |
2195 | ||
2196 | mutex_lock(&local->chanctx_mtx); | |
2197 | ||
2198 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
2199 | lockdep_is_held(&local->chanctx_mtx)); | |
2200 | ||
2201 | if (WARN_ON_ONCE(!chanctx_conf)) | |
2202 | goto unlock; | |
2203 | ||
2204 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
2205 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
2206 | unlock: | |
2207 | mutex_unlock(&local->chanctx_mtx); | |
2208 | } | |
2209 | ||
8e664fb3 JB |
2210 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
2211 | { | |
2212 | size_t pos = offset; | |
2213 | ||
2214 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
2215 | pos += 2 + ies[pos + 1]; | |
2216 | ||
2217 | return pos; | |
2218 | } | |
615f7b9b MV |
2219 | |
2220 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
2221 | int rssi_min_thold, | |
2222 | int rssi_max_thold) | |
2223 | { | |
2224 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
2225 | ||
2226 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2227 | return; | |
2228 | ||
2229 | /* | |
2230 | * Scale up threshold values before storing it, as the RSSI averaging | |
2231 | * algorithm uses a scaled up value as well. Change this scaling | |
2232 | * factor if the RSSI averaging algorithm changes. | |
2233 | */ | |
2234 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
2235 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
2236 | } | |
2237 | ||
2238 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
2239 | int rssi_min_thold, | |
2240 | int rssi_max_thold) | |
2241 | { | |
2242 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2243 | ||
2244 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2245 | rssi_min_thold > rssi_max_thold); | |
2246 | ||
2247 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2248 | rssi_max_thold); | |
2249 | } | |
2250 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2251 | ||
2252 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2253 | { | |
2254 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2255 | ||
2256 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2257 | } | |
2258 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2259 | |
ef96a842 | 2260 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2261 | u16 cap) |
2262 | { | |
2263 | __le16 tmp; | |
2264 | ||
2265 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2266 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2267 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2268 | ||
2269 | /* capability flags */ | |
2270 | tmp = cpu_to_le16(cap); | |
2271 | memcpy(pos, &tmp, sizeof(u16)); | |
2272 | pos += sizeof(u16); | |
2273 | ||
2274 | /* AMPDU parameters */ | |
ef96a842 BG |
2275 | *pos++ = ht_cap->ampdu_factor | |
2276 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2277 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2278 | ||
2279 | /* MCS set */ | |
ef96a842 BG |
2280 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2281 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2282 | |
2283 | /* extended capabilities */ | |
2284 | pos += sizeof(__le16); | |
2285 | ||
2286 | /* BF capabilities */ | |
2287 | pos += sizeof(__le32); | |
2288 | ||
2289 | /* antenna selection */ | |
2290 | pos += sizeof(u8); | |
2291 | ||
2292 | return pos; | |
2293 | } | |
2294 | ||
ba0afa2f | 2295 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2296 | u32 cap) |
ba0afa2f MP |
2297 | { |
2298 | __le32 tmp; | |
2299 | ||
2300 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2301 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2302 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2303 | |
2304 | /* capability flags */ | |
2305 | tmp = cpu_to_le32(cap); | |
2306 | memcpy(pos, &tmp, sizeof(u32)); | |
2307 | pos += sizeof(u32); | |
2308 | ||
2309 | /* VHT MCS set */ | |
2310 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2311 | pos += sizeof(vht_cap->vht_mcs); | |
2312 | ||
2313 | return pos; | |
2314 | } | |
2315 | ||
074d46d1 | 2316 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2317 | const struct cfg80211_chan_def *chandef, |
57f255f5 | 2318 | u16 prot_mode, bool rifs_mode) |
42e7aa77 | 2319 | { |
074d46d1 | 2320 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2321 | /* Build HT Information */ |
074d46d1 JB |
2322 | *pos++ = WLAN_EID_HT_OPERATION; |
2323 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2324 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2325 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2326 | chandef->chan->center_freq); | |
2327 | switch (chandef->width) { | |
2328 | case NL80211_CHAN_WIDTH_160: | |
2329 | case NL80211_CHAN_WIDTH_80P80: | |
2330 | case NL80211_CHAN_WIDTH_80: | |
2331 | case NL80211_CHAN_WIDTH_40: | |
2332 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2333 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2334 | else | |
2335 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2336 | break; |
42e7aa77 | 2337 | default: |
074d46d1 | 2338 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2339 | break; |
2340 | } | |
aee286c2 | 2341 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2342 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2343 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2344 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2345 | |
57f255f5 AN |
2346 | if (rifs_mode) |
2347 | ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; | |
2348 | ||
431e3154 | 2349 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2350 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2351 | |
2352 | /* It seems that Basic MCS set and Supported MCS set | |
2353 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2354 | memset(&ht_oper->basic_set, 0, 16); |
2355 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2356 | |
074d46d1 | 2357 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2358 | } |
2359 | ||
fb28ec0c AN |
2360 | u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
2361 | const struct cfg80211_chan_def *chandef) | |
2362 | { | |
2363 | struct ieee80211_vht_operation *vht_oper; | |
2364 | ||
2365 | *pos++ = WLAN_EID_VHT_OPERATION; | |
2366 | *pos++ = sizeof(struct ieee80211_vht_operation); | |
2367 | vht_oper = (struct ieee80211_vht_operation *)pos; | |
2368 | vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel( | |
2369 | chandef->center_freq1); | |
2370 | if (chandef->center_freq2) | |
2371 | vht_oper->center_freq_seg2_idx = | |
2372 | ieee80211_frequency_to_channel(chandef->center_freq2); | |
f020ae40 CYY |
2373 | else |
2374 | vht_oper->center_freq_seg2_idx = 0x00; | |
fb28ec0c AN |
2375 | |
2376 | switch (chandef->width) { | |
2377 | case NL80211_CHAN_WIDTH_160: | |
23665aaf JM |
2378 | /* |
2379 | * Convert 160 MHz channel width to new style as interop | |
2380 | * workaround. | |
2381 | */ | |
2382 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
2383 | vht_oper->center_freq_seg2_idx = vht_oper->center_freq_seg1_idx; | |
2384 | if (chandef->chan->center_freq < chandef->center_freq1) | |
2385 | vht_oper->center_freq_seg1_idx -= 8; | |
2386 | else | |
2387 | vht_oper->center_freq_seg1_idx += 8; | |
fb28ec0c AN |
2388 | break; |
2389 | case NL80211_CHAN_WIDTH_80P80: | |
23665aaf JM |
2390 | /* |
2391 | * Convert 80+80 MHz channel width to new style as interop | |
2392 | * workaround. | |
2393 | */ | |
2394 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
fb28ec0c AN |
2395 | break; |
2396 | case NL80211_CHAN_WIDTH_80: | |
2397 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
2398 | break; | |
2399 | default: | |
2400 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; | |
2401 | break; | |
2402 | } | |
2403 | ||
2404 | /* don't require special VHT peer rates */ | |
2405 | vht_oper->basic_mcs_set = cpu_to_le16(0xffff); | |
2406 | ||
2407 | return pos + sizeof(struct ieee80211_vht_operation); | |
2408 | } | |
2409 | ||
8ac3c704 JB |
2410 | bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, |
2411 | struct cfg80211_chan_def *chandef) | |
42e7aa77 AS |
2412 | { |
2413 | enum nl80211_channel_type channel_type; | |
2414 | ||
8ac3c704 JB |
2415 | if (!ht_oper) |
2416 | return false; | |
42e7aa77 | 2417 | |
074d46d1 | 2418 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2419 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2420 | channel_type = NL80211_CHAN_HT20; | |
2421 | break; | |
2422 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2423 | channel_type = NL80211_CHAN_HT40PLUS; | |
2424 | break; | |
2425 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2426 | channel_type = NL80211_CHAN_HT40MINUS; | |
2427 | break; | |
2428 | default: | |
2429 | channel_type = NL80211_CHAN_NO_HT; | |
8ac3c704 | 2430 | return false; |
42e7aa77 AS |
2431 | } |
2432 | ||
8ac3c704 JB |
2433 | cfg80211_chandef_create(chandef, chandef->chan, channel_type); |
2434 | return true; | |
42e7aa77 AS |
2435 | } |
2436 | ||
8ac3c704 JB |
2437 | bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, |
2438 | struct cfg80211_chan_def *chandef) | |
abcff6ef | 2439 | { |
8ac3c704 JB |
2440 | struct cfg80211_chan_def new = *chandef; |
2441 | int cf1, cf2; | |
2442 | ||
abcff6ef | 2443 | if (!oper) |
8ac3c704 | 2444 | return false; |
abcff6ef | 2445 | |
8ac3c704 JB |
2446 | cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, |
2447 | chandef->chan->band); | |
2448 | cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg2_idx, | |
2449 | chandef->chan->band); | |
abcff6ef JD |
2450 | |
2451 | switch (oper->chan_width) { | |
2452 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
2453 | break; | |
2454 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
8ac3c704 JB |
2455 | new.width = NL80211_CHAN_WIDTH_80; |
2456 | new.center_freq1 = cf1; | |
23665aaf JM |
2457 | /* If needed, adjust based on the newer interop workaround. */ |
2458 | if (oper->center_freq_seg2_idx) { | |
2459 | unsigned int diff; | |
2460 | ||
2461 | diff = abs(oper->center_freq_seg2_idx - | |
2462 | oper->center_freq_seg1_idx); | |
2463 | if (diff == 8) { | |
2464 | new.width = NL80211_CHAN_WIDTH_160; | |
2465 | new.center_freq1 = cf2; | |
2466 | } else if (diff > 8) { | |
2467 | new.width = NL80211_CHAN_WIDTH_80P80; | |
2468 | new.center_freq2 = cf2; | |
2469 | } | |
2470 | } | |
abcff6ef JD |
2471 | break; |
2472 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
8ac3c704 JB |
2473 | new.width = NL80211_CHAN_WIDTH_160; |
2474 | new.center_freq1 = cf1; | |
abcff6ef JD |
2475 | break; |
2476 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
8ac3c704 JB |
2477 | new.width = NL80211_CHAN_WIDTH_80P80; |
2478 | new.center_freq1 = cf1; | |
2479 | new.center_freq2 = cf2; | |
abcff6ef JD |
2480 | break; |
2481 | default: | |
8ac3c704 | 2482 | return false; |
abcff6ef JD |
2483 | } |
2484 | ||
8ac3c704 JB |
2485 | if (!cfg80211_chandef_valid(&new)) |
2486 | return false; | |
2487 | ||
2488 | *chandef = new; | |
2489 | return true; | |
abcff6ef JD |
2490 | } |
2491 | ||
2103dec1 SW |
2492 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2493 | const struct ieee80211_supported_band *sband, | |
2494 | const u8 *srates, int srates_len, u32 *rates) | |
2495 | { | |
2496 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2497 | int shift = ieee80211_chandef_get_shift(chandef); | |
2498 | struct ieee80211_rate *br; | |
2499 | int brate, rate, i, j, count = 0; | |
2500 | ||
2501 | *rates = 0; | |
2502 | ||
2503 | for (i = 0; i < srates_len; i++) { | |
2504 | rate = srates[i] & 0x7f; | |
2505 | ||
2506 | for (j = 0; j < sband->n_bitrates; j++) { | |
2507 | br = &sband->bitrates[j]; | |
2508 | if ((rate_flags & br->flags) != rate_flags) | |
2509 | continue; | |
2510 | ||
2511 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2512 | if (brate == rate) { | |
2513 | *rates |= BIT(j); | |
2514 | count++; | |
2515 | break; | |
2516 | } | |
2517 | } | |
2518 | } | |
2519 | return count; | |
2520 | } | |
2521 | ||
fc8a7321 | 2522 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b | 2523 | struct sk_buff *skb, bool need_basic, |
57fbcce3 | 2524 | enum nl80211_band band) |
768db343 | 2525 | { |
768db343 AN |
2526 | struct ieee80211_local *local = sdata->local; |
2527 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2528 | int rate, shift; |
768db343 | 2529 | u8 i, rates, *pos; |
fc8a7321 | 2530 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2531 | u32 rate_flags; |
768db343 | 2532 | |
2103dec1 SW |
2533 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2534 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2535 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2536 | rates = 0; |
2537 | for (i = 0; i < sband->n_bitrates; i++) { | |
2538 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2539 | continue; | |
2540 | rates++; | |
2541 | } | |
768db343 AN |
2542 | if (rates > 8) |
2543 | rates = 8; | |
2544 | ||
2545 | if (skb_tailroom(skb) < rates + 2) | |
2546 | return -ENOMEM; | |
2547 | ||
2548 | pos = skb_put(skb, rates + 2); | |
2549 | *pos++ = WLAN_EID_SUPP_RATES; | |
2550 | *pos++ = rates; | |
2551 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2552 | u8 basic = 0; |
2103dec1 SW |
2553 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2554 | continue; | |
2555 | ||
657c3e0c AN |
2556 | if (need_basic && basic_rates & BIT(i)) |
2557 | basic = 0x80; | |
2103dec1 SW |
2558 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2559 | 5 * (1 << shift)); | |
2560 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2561 | } |
2562 | ||
2563 | return 0; | |
2564 | } | |
2565 | ||
fc8a7321 | 2566 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b | 2567 | struct sk_buff *skb, bool need_basic, |
57fbcce3 | 2568 | enum nl80211_band band) |
768db343 | 2569 | { |
768db343 AN |
2570 | struct ieee80211_local *local = sdata->local; |
2571 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2572 | int rate, shift; |
768db343 | 2573 | u8 i, exrates, *pos; |
fc8a7321 | 2574 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2575 | u32 rate_flags; |
2576 | ||
2577 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2578 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2579 | |
6b77863b | 2580 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2581 | exrates = 0; |
2582 | for (i = 0; i < sband->n_bitrates; i++) { | |
2583 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2584 | continue; | |
2585 | exrates++; | |
2586 | } | |
2587 | ||
768db343 AN |
2588 | if (exrates > 8) |
2589 | exrates -= 8; | |
2590 | else | |
2591 | exrates = 0; | |
2592 | ||
2593 | if (skb_tailroom(skb) < exrates + 2) | |
2594 | return -ENOMEM; | |
2595 | ||
2596 | if (exrates) { | |
2597 | pos = skb_put(skb, exrates + 2); | |
2598 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2599 | *pos++ = exrates; | |
2600 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2601 | u8 basic = 0; |
2103dec1 SW |
2602 | if ((rate_flags & sband->bitrates[i].flags) |
2603 | != rate_flags) | |
2604 | continue; | |
657c3e0c AN |
2605 | if (need_basic && basic_rates & BIT(i)) |
2606 | basic = 0x80; | |
2103dec1 SW |
2607 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2608 | 5 * (1 << shift)); | |
2609 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2610 | } |
2611 | } | |
2612 | return 0; | |
2613 | } | |
1dae27f8 WYG |
2614 | |
2615 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2616 | { | |
2617 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2618 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2619 | ||
be6bcabc WYG |
2620 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2621 | /* non-managed type inferfaces */ | |
2622 | return 0; | |
2623 | } | |
338c17ae | 2624 | return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
1dae27f8 | 2625 | } |
0d8a0a17 | 2626 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2627 | |
2628 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2629 | { | |
2630 | if (!mcs) | |
2631 | return 1; | |
2632 | ||
2633 | /* TODO: consider rx_highest */ | |
2634 | ||
2635 | if (mcs->rx_mask[3]) | |
2636 | return 4; | |
2637 | if (mcs->rx_mask[2]) | |
2638 | return 3; | |
2639 | if (mcs->rx_mask[1]) | |
2640 | return 2; | |
2641 | return 1; | |
2642 | } | |
f4bda337 TP |
2643 | |
2644 | /** | |
2645 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2646 | * @local: mac80211 hw info struct | |
2647 | * @status: RX status | |
2648 | * @mpdu_len: total MPDU length (including FCS) | |
2649 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2650 | * | |
2651 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2652 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2653 | * the timestamp to TSF at beginning of MPDU reception. | |
2654 | */ | |
2655 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2656 | struct ieee80211_rx_status *status, | |
2657 | unsigned int mpdu_len, | |
2658 | unsigned int mpdu_offset) | |
2659 | { | |
2660 | u64 ts = status->mactime; | |
2661 | struct rate_info ri; | |
2662 | u16 rate; | |
2663 | ||
2664 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2665 | return 0; | |
2666 | ||
2667 | memset(&ri, 0, sizeof(ri)); | |
2668 | ||
2669 | /* Fill cfg80211 rate info */ | |
2670 | if (status->flag & RX_FLAG_HT) { | |
2671 | ri.mcs = status->rate_idx; | |
2672 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2673 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2674 | ri.bw = RATE_INFO_BW_40; |
2675 | else | |
2676 | ri.bw = RATE_INFO_BW_20; | |
f4bda337 TP |
2677 | if (status->flag & RX_FLAG_SHORT_GI) |
2678 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2679 | } else if (status->flag & RX_FLAG_VHT) { |
2680 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2681 | ri.mcs = status->rate_idx; | |
2682 | ri.nss = status->vht_nss; | |
2683 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2684 | ri.bw = RATE_INFO_BW_40; |
2685 | else if (status->vht_flag & RX_VHT_FLAG_80MHZ) | |
2686 | ri.bw = RATE_INFO_BW_80; | |
2687 | else if (status->vht_flag & RX_VHT_FLAG_160MHZ) | |
2688 | ri.bw = RATE_INFO_BW_160; | |
2689 | else | |
2690 | ri.bw = RATE_INFO_BW_20; | |
5614618e JB |
2691 | if (status->flag & RX_FLAG_SHORT_GI) |
2692 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2693 | } else { |
2694 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2695 | int shift = 0; |
2696 | int bitrate; | |
2697 | ||
b51f3bee | 2698 | if (status->flag & RX_FLAG_10MHZ) { |
2103dec1 | 2699 | shift = 1; |
b51f3bee JB |
2700 | ri.bw = RATE_INFO_BW_10; |
2701 | } else if (status->flag & RX_FLAG_5MHZ) { | |
2103dec1 | 2702 | shift = 2; |
b51f3bee JB |
2703 | ri.bw = RATE_INFO_BW_5; |
2704 | } else { | |
2705 | ri.bw = RATE_INFO_BW_20; | |
2706 | } | |
f4bda337 TP |
2707 | |
2708 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2709 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2710 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4a0f0c5 JB |
2711 | |
2712 | if (status->flag & RX_FLAG_MACTIME_PLCP_START) { | |
2713 | /* TODO: handle HT/VHT preambles */ | |
57fbcce3 | 2714 | if (status->band == NL80211_BAND_5GHZ) { |
f4a0f0c5 JB |
2715 | ts += 20 << shift; |
2716 | mpdu_offset += 2; | |
2717 | } else if (status->flag & RX_FLAG_SHORTPRE) { | |
2718 | ts += 96; | |
2719 | } else { | |
2720 | ts += 192; | |
2721 | } | |
2722 | } | |
f4bda337 TP |
2723 | } |
2724 | ||
2725 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 | 2726 | if (WARN_ONCE(!rate, |
f980ebc0 SS |
2727 | "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", |
2728 | (unsigned long long)status->flag, status->rate_idx, | |
2729 | status->vht_nss)) | |
d86aa4f8 | 2730 | return 0; |
f4bda337 TP |
2731 | |
2732 | /* rewind from end of MPDU */ | |
2733 | if (status->flag & RX_FLAG_MACTIME_END) | |
2734 | ts -= mpdu_len * 8 * 10 / rate; | |
2735 | ||
2736 | ts += mpdu_offset * 8 * 10 / rate; | |
2737 | ||
2738 | return ts; | |
2739 | } | |
164eb02d SW |
2740 | |
2741 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2742 | { | |
2743 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2744 | struct cfg80211_chan_def chandef; |
164eb02d | 2745 | |
34a3740d | 2746 | mutex_lock(&local->mtx); |
164eb02d SW |
2747 | mutex_lock(&local->iflist_mtx); |
2748 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2749 | /* it might be waiting for the local->mtx, but then |
2750 | * by the time it gets it, sdata->wdev.cac_started | |
2751 | * will no longer be true | |
2752 | */ | |
2753 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2754 | |
2755 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2756 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2757 | ieee80211_vif_release_channel(sdata); |
2758 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2759 | &chandef, |
164eb02d SW |
2760 | NL80211_RADAR_CAC_ABORTED, |
2761 | GFP_KERNEL); | |
2762 | } | |
2763 | } | |
2764 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2765 | mutex_unlock(&local->mtx); |
164eb02d SW |
2766 | } |
2767 | ||
2768 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2769 | { | |
2770 | struct ieee80211_local *local = | |
2771 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2772 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
486cf4c0 MK |
2773 | struct ieee80211_chanctx *ctx; |
2774 | int num_chanctx = 0; | |
2775 | ||
2776 | mutex_lock(&local->chanctx_mtx); | |
2777 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2778 | if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) | |
2779 | continue; | |
2780 | ||
2781 | num_chanctx++; | |
2782 | chandef = ctx->conf.def; | |
2783 | } | |
2784 | mutex_unlock(&local->chanctx_mtx); | |
164eb02d SW |
2785 | |
2786 | ieee80211_dfs_cac_cancel(local); | |
2787 | ||
486cf4c0 MK |
2788 | if (num_chanctx > 1) |
2789 | /* XXX: multi-channel is not supported yet */ | |
164eb02d | 2790 | WARN_ON(1); |
84a3d1c9 | 2791 | else |
164eb02d | 2792 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2793 | } |
2794 | ||
2795 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2796 | { | |
2797 | struct ieee80211_local *local = hw_to_local(hw); | |
2798 | ||
2799 | trace_api_radar_detected(local); | |
2800 | ||
2801 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2802 | } | |
2803 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2804 | |
2805 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2806 | { | |
2807 | u32 ret; | |
2808 | int tmp; | |
2809 | ||
2810 | switch (c->width) { | |
2811 | case NL80211_CHAN_WIDTH_20: | |
2812 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2813 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2814 | break; | |
2815 | case NL80211_CHAN_WIDTH_40: | |
2816 | c->width = NL80211_CHAN_WIDTH_20; | |
2817 | c->center_freq1 = c->chan->center_freq; | |
2818 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2819 | IEEE80211_STA_DISABLE_VHT; | |
2820 | break; | |
2821 | case NL80211_CHAN_WIDTH_80: | |
2822 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2823 | /* n_P40 */ | |
2824 | tmp /= 2; | |
2825 | /* freq_P40 */ | |
2826 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2827 | c->width = NL80211_CHAN_WIDTH_40; | |
2828 | ret = IEEE80211_STA_DISABLE_VHT; | |
2829 | break; | |
2830 | case NL80211_CHAN_WIDTH_80P80: | |
2831 | c->center_freq2 = 0; | |
2832 | c->width = NL80211_CHAN_WIDTH_80; | |
2833 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2834 | IEEE80211_STA_DISABLE_160MHZ; | |
2835 | break; | |
2836 | case NL80211_CHAN_WIDTH_160: | |
2837 | /* n_P20 */ | |
2838 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2839 | /* n_P80 */ | |
2840 | tmp /= 4; | |
2841 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2842 | c->width = NL80211_CHAN_WIDTH_80; | |
2843 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2844 | IEEE80211_STA_DISABLE_160MHZ; | |
2845 | break; | |
2846 | default: | |
2847 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2848 | WARN_ON_ONCE(1); | |
2849 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2850 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2851 | break; | |
2852 | case NL80211_CHAN_WIDTH_5: | |
2853 | case NL80211_CHAN_WIDTH_10: | |
2854 | WARN_ON_ONCE(1); | |
2855 | /* keep c->width */ | |
2856 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2857 | break; | |
2858 | } | |
2859 | ||
2860 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2861 | ||
2862 | return ret; | |
2863 | } | |
687da132 EG |
2864 | |
2865 | /* | |
2866 | * Returns true if smps_mode_new is strictly more restrictive than | |
2867 | * smps_mode_old. | |
2868 | */ | |
2869 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2870 | enum ieee80211_smps_mode smps_mode_new) | |
2871 | { | |
2872 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2873 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2874 | return false; | |
2875 | ||
2876 | switch (smps_mode_old) { | |
2877 | case IEEE80211_SMPS_STATIC: | |
2878 | return false; | |
2879 | case IEEE80211_SMPS_DYNAMIC: | |
2880 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2881 | case IEEE80211_SMPS_OFF: | |
2882 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2883 | default: | |
2884 | WARN_ON(1); | |
2885 | } | |
2886 | ||
2887 | return false; | |
2888 | } | |
c6da674a CYY |
2889 | |
2890 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2891 | struct cfg80211_csa_settings *csa_settings) | |
2892 | { | |
2893 | struct sk_buff *skb; | |
2894 | struct ieee80211_mgmt *mgmt; | |
2895 | struct ieee80211_local *local = sdata->local; | |
2896 | int freq; | |
2897 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2898 | sizeof(mgmt->u.action.u.chan_switch); | |
2899 | u8 *pos; | |
2900 | ||
2901 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2902 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2903 | return -EOPNOTSUPP; | |
2904 | ||
2905 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2906 | 5 + /* channel switch announcement element */ | |
2907 | 3 + /* secondary channel offset element */ | |
2908 | 8); /* mesh channel switch parameters element */ | |
2909 | if (!skb) | |
2910 | return -ENOMEM; | |
2911 | ||
2912 | skb_reserve(skb, local->tx_headroom); | |
2913 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2914 | memset(mgmt, 0, hdr_len); | |
2915 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2916 | IEEE80211_STYPE_ACTION); | |
2917 | ||
2918 | eth_broadcast_addr(mgmt->da); | |
2919 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2920 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2921 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2922 | } else { | |
2923 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2924 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2925 | } | |
2926 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2927 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2928 | pos = skb_put(skb, 5); | |
2929 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2930 | *pos++ = 3; /* IE length */ | |
2931 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2932 | freq = csa_settings->chandef.chan->center_freq; | |
2933 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2934 | *pos++ = csa_settings->count; /* count */ | |
2935 | ||
2936 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2937 | enum nl80211_channel_type ch_type; | |
2938 | ||
2939 | skb_put(skb, 3); | |
2940 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2941 | *pos++ = 1; /* IE length */ | |
2942 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2943 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2944 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2945 | else | |
2946 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2947 | } | |
2948 | ||
2949 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2950 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2951 | |
2952 | skb_put(skb, 8); | |
2953 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2954 | *pos++ = 6; /* IE length */ | |
2955 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2956 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2957 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2958 | *pos++ |= csa_settings->block_tx ? | |
2959 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2960 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2961 | pos += 2; | |
ca91dc97 | 2962 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2963 | pos += 2; |
c6da674a CYY |
2964 | } |
2965 | ||
2966 | ieee80211_tx_skb(sdata, skb); | |
2967 | return 0; | |
2968 | } | |
2475b1cc MS |
2969 | |
2970 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2971 | { | |
2972 | return !(cs == NULL || cs->cipher == 0 || | |
2973 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2974 | cs->hdr_len <= cs->key_idx_off || | |
2975 | cs->key_idx_shift > 7 || | |
2976 | cs->key_idx_mask == 0); | |
2977 | } | |
2978 | ||
2979 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2980 | { | |
2981 | int i; | |
2982 | ||
2983 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2984 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2985 | ||
2986 | for (i = 0; i < n; i++) | |
2987 | if (!ieee80211_cs_valid(&cs[i])) | |
2988 | return false; | |
2989 | ||
2990 | return true; | |
2991 | } | |
2992 | ||
2993 | const struct ieee80211_cipher_scheme * | |
2994 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2995 | enum nl80211_iftype iftype) | |
2996 | { | |
2997 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2998 | int n = local->hw.n_cipher_schemes; | |
2999 | int i; | |
3000 | const struct ieee80211_cipher_scheme *cs = NULL; | |
3001 | ||
3002 | for (i = 0; i < n; i++) { | |
3003 | if (l[i].cipher == cipher) { | |
3004 | cs = &l[i]; | |
3005 | break; | |
3006 | } | |
3007 | } | |
3008 | ||
3009 | if (!cs || !(cs->iftype & BIT(iftype))) | |
3010 | return NULL; | |
3011 | ||
3012 | return cs; | |
3013 | } | |
3014 | ||
3015 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
3016 | struct cfg80211_crypto_settings *crypto, | |
3017 | enum nl80211_iftype iftype) | |
3018 | { | |
3019 | const struct ieee80211_cipher_scheme *cs; | |
3020 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
3021 | int i; | |
3022 | ||
3023 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
3024 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
3025 | iftype); | |
3026 | ||
3027 | if (cs && headroom < cs->hdr_len) | |
3028 | headroom = cs->hdr_len; | |
3029 | } | |
3030 | ||
3031 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
3032 | if (cs && headroom < cs->hdr_len) | |
3033 | headroom = cs->hdr_len; | |
3034 | ||
3035 | return headroom; | |
3036 | } | |
a7022e65 FF |
3037 | |
3038 | static bool | |
3039 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
3040 | { | |
3041 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
3042 | int skip; | |
3043 | ||
3044 | if (end > 0) | |
3045 | return false; | |
3046 | ||
519ee691 JD |
3047 | /* One shot NOA */ |
3048 | if (data->count[i] == 1) | |
3049 | return false; | |
3050 | ||
3051 | if (data->desc[i].interval == 0) | |
3052 | return false; | |
3053 | ||
a7022e65 FF |
3054 | /* End time is in the past, check for repetitions */ |
3055 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
3056 | if (data->count[i] < 255) { | |
3057 | if (data->count[i] <= skip) { | |
3058 | data->count[i] = 0; | |
3059 | return false; | |
3060 | } | |
3061 | ||
3062 | data->count[i] -= skip; | |
3063 | } | |
3064 | ||
3065 | data->desc[i].start += skip * data->desc[i].interval; | |
3066 | ||
3067 | return true; | |
3068 | } | |
3069 | ||
3070 | static bool | |
3071 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
3072 | s32 *offset) | |
3073 | { | |
3074 | bool ret = false; | |
3075 | int i; | |
3076 | ||
3077 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3078 | s32 cur; | |
3079 | ||
3080 | if (!data->count[i]) | |
3081 | continue; | |
3082 | ||
3083 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
3084 | ret = true; | |
3085 | ||
3086 | cur = data->desc[i].start - tsf; | |
3087 | if (cur > *offset) | |
3088 | continue; | |
3089 | ||
3090 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
3091 | if (cur > *offset) | |
3092 | *offset = cur; | |
3093 | } | |
3094 | ||
3095 | return ret; | |
3096 | } | |
3097 | ||
3098 | static u32 | |
3099 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
3100 | { | |
3101 | s32 offset = 0; | |
3102 | int tries = 0; | |
3103 | /* | |
3104 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
3105 | * descriptors cover the full time period. | |
3106 | */ | |
3107 | int max_tries = 5; | |
3108 | ||
3109 | ieee80211_extend_absent_time(data, tsf, &offset); | |
3110 | do { | |
3111 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
3112 | break; | |
3113 | ||
3114 | tries++; | |
3115 | } while (tries < max_tries); | |
3116 | ||
3117 | return offset; | |
3118 | } | |
3119 | ||
3120 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
3121 | { | |
3122 | u32 next_offset = BIT(31) - 1; | |
3123 | int i; | |
3124 | ||
3125 | data->absent = 0; | |
3126 | data->has_next_tsf = false; | |
3127 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3128 | s32 start; | |
3129 | ||
3130 | if (!data->count[i]) | |
3131 | continue; | |
3132 | ||
3133 | ieee80211_extend_noa_desc(data, tsf, i); | |
3134 | start = data->desc[i].start - tsf; | |
3135 | if (start <= 0) | |
3136 | data->absent |= BIT(i); | |
3137 | ||
3138 | if (next_offset > start) | |
3139 | next_offset = start; | |
3140 | ||
3141 | data->has_next_tsf = true; | |
3142 | } | |
3143 | ||
3144 | if (data->absent) | |
3145 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
3146 | ||
3147 | data->next_tsf = tsf + next_offset; | |
3148 | } | |
3149 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
3150 | ||
3151 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
3152 | struct ieee80211_noa_data *data, u32 tsf) | |
3153 | { | |
3154 | int ret = 0; | |
3155 | int i; | |
3156 | ||
3157 | memset(data, 0, sizeof(*data)); | |
3158 | ||
3159 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3160 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
3161 | ||
3162 | if (!desc->count || !desc->duration) | |
3163 | continue; | |
3164 | ||
3165 | data->count[i] = desc->count; | |
3166 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
3167 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
3168 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
3169 | ||
3170 | if (data->count[i] > 1 && | |
3171 | data->desc[i].interval < data->desc[i].duration) | |
3172 | continue; | |
3173 | ||
3174 | ieee80211_extend_noa_desc(data, tsf, i); | |
3175 | ret++; | |
3176 | } | |
3177 | ||
3178 | if (ret) | |
3179 | ieee80211_update_p2p_noa(data, tsf); | |
3180 | ||
3181 | return ret; | |
3182 | } | |
3183 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
3184 | |
3185 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
3186 | struct ieee80211_sub_if_data *sdata) | |
3187 | { | |
3188 | u64 tsf = drv_get_tsf(local, sdata); | |
3189 | u64 dtim_count = 0; | |
3190 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
3191 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
3192 | struct ps_data *ps; | |
3193 | u8 bcns_from_dtim; | |
3194 | ||
3195 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
3196 | return; | |
3197 | ||
3198 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
3199 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
3200 | if (!sdata->bss) | |
3201 | return; | |
3202 | ||
3203 | ps = &sdata->bss->ps; | |
3204 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
3205 | ps = &sdata->u.mesh.ps; | |
3206 | } else { | |
3207 | return; | |
3208 | } | |
3209 | ||
3210 | /* | |
3211 | * actually finds last dtim_count, mac80211 will update in | |
3212 | * __beacon_add_tim(). | |
3213 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
3214 | */ | |
3215 | do_div(tsf, beacon_int); | |
3216 | bcns_from_dtim = do_div(tsf, dtim_period); | |
3217 | /* just had a DTIM */ | |
3218 | if (!bcns_from_dtim) | |
3219 | dtim_count = 0; | |
3220 | else | |
3221 | dtim_count = dtim_period - bcns_from_dtim; | |
3222 | ||
3223 | ps->dtim_count = dtim_count; | |
3224 | } | |
73de86a3 | 3225 | |
71e6195e MK |
3226 | static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, |
3227 | struct ieee80211_chanctx *ctx) | |
3228 | { | |
3229 | struct ieee80211_sub_if_data *sdata; | |
3230 | u8 radar_detect = 0; | |
3231 | ||
3232 | lockdep_assert_held(&local->chanctx_mtx); | |
3233 | ||
3234 | if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) | |
3235 | return 0; | |
3236 | ||
3237 | list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) | |
3238 | if (sdata->reserved_radar_required) | |
3239 | radar_detect |= BIT(sdata->reserved_chandef.width); | |
3240 | ||
3241 | /* | |
3242 | * An in-place reservation context should not have any assigned vifs | |
3243 | * until it replaces the other context. | |
3244 | */ | |
3245 | WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && | |
3246 | !list_empty(&ctx->assigned_vifs)); | |
3247 | ||
3248 | list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) | |
3249 | if (sdata->radar_required) | |
3250 | radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); | |
3251 | ||
3252 | return radar_detect; | |
3253 | } | |
3254 | ||
73de86a3 LC |
3255 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, |
3256 | const struct cfg80211_chan_def *chandef, | |
3257 | enum ieee80211_chanctx_mode chanmode, | |
3258 | u8 radar_detect) | |
3259 | { | |
3260 | struct ieee80211_local *local = sdata->local; | |
3261 | struct ieee80211_sub_if_data *sdata_iter; | |
3262 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
3263 | int num[NUM_NL80211_IFTYPES]; | |
3264 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 3265 | int num_different_channels = 0; |
73de86a3 LC |
3266 | int total = 1; |
3267 | ||
3268 | lockdep_assert_held(&local->chanctx_mtx); | |
3269 | ||
3270 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
3271 | return -EINVAL; | |
3272 | ||
b6a55015 LC |
3273 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
3274 | !chandef->chan)) | |
73de86a3 LC |
3275 | return -EINVAL; |
3276 | ||
b6a55015 LC |
3277 | if (chandef) |
3278 | num_different_channels = 1; | |
3279 | ||
73de86a3 LC |
3280 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
3281 | return -EINVAL; | |
3282 | ||
3283 | /* Always allow software iftypes */ | |
3284 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
3285 | if (radar_detect) | |
3286 | return -EINVAL; | |
3287 | return 0; | |
3288 | } | |
3289 | ||
3290 | memset(num, 0, sizeof(num)); | |
3291 | ||
3292 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
3293 | num[iftype] = 1; | |
3294 | ||
3295 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3296 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3297 | continue; | |
71e6195e | 3298 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
73de86a3 LC |
3299 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { |
3300 | num_different_channels++; | |
3301 | continue; | |
3302 | } | |
b6a55015 | 3303 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
3304 | cfg80211_chandef_compatible(chandef, |
3305 | &ctx->conf.def)) | |
3306 | continue; | |
3307 | num_different_channels++; | |
3308 | } | |
3309 | ||
3310 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
3311 | struct wireless_dev *wdev_iter; | |
3312 | ||
3313 | wdev_iter = &sdata_iter->wdev; | |
3314 | ||
3315 | if (sdata_iter == sdata || | |
0f611d28 | 3316 | !ieee80211_sdata_running(sdata_iter) || |
73de86a3 LC |
3317 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) |
3318 | continue; | |
3319 | ||
3320 | num[wdev_iter->iftype]++; | |
3321 | total++; | |
3322 | } | |
3323 | ||
3324 | if (total == 1 && !radar_detect) | |
3325 | return 0; | |
3326 | ||
3327 | return cfg80211_check_combinations(local->hw.wiphy, | |
3328 | num_different_channels, | |
3329 | radar_detect, num); | |
3330 | } | |
6fa001bc MK |
3331 | |
3332 | static void | |
3333 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
3334 | void *data) | |
3335 | { | |
3336 | u32 *max_num_different_channels = data; | |
3337 | ||
3338 | *max_num_different_channels = max(*max_num_different_channels, | |
3339 | c->num_different_channels); | |
3340 | } | |
3341 | ||
3342 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
3343 | { | |
3344 | struct ieee80211_sub_if_data *sdata; | |
3345 | int num[NUM_NL80211_IFTYPES] = {}; | |
3346 | struct ieee80211_chanctx *ctx; | |
3347 | int num_different_channels = 0; | |
3348 | u8 radar_detect = 0; | |
3349 | u32 max_num_different_channels = 1; | |
3350 | int err; | |
3351 | ||
3352 | lockdep_assert_held(&local->chanctx_mtx); | |
3353 | ||
3354 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3355 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3356 | continue; | |
3357 | ||
6fa001bc MK |
3358 | num_different_channels++; |
3359 | ||
71e6195e | 3360 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
6fa001bc MK |
3361 | } |
3362 | ||
3363 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3364 | num[sdata->wdev.iftype]++; | |
3365 | ||
3366 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
3367 | num_different_channels, radar_detect, | |
3368 | num, ieee80211_iter_max_chans, | |
3369 | &max_num_different_channels); | |
3370 | if (err < 0) | |
3371 | return err; | |
3372 | ||
3373 | return max_num_different_channels; | |
3374 | } | |
40b861a0 AN |
3375 | |
3376 | u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) | |
3377 | { | |
3378 | *buf++ = WLAN_EID_VENDOR_SPECIFIC; | |
3379 | *buf++ = 7; /* len */ | |
3380 | *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
3381 | *buf++ = 0x50; | |
3382 | *buf++ = 0xf2; | |
3383 | *buf++ = 2; /* WME */ | |
3384 | *buf++ = 0; /* WME info */ | |
3385 | *buf++ = 1; /* WME ver */ | |
3386 | *buf++ = qosinfo; /* U-APSD no in use */ | |
3387 | ||
3388 | return buf; | |
3389 | } | |
ba8c3d6f | 3390 | |
f2ac7e30 MK |
3391 | void ieee80211_txq_get_depth(struct ieee80211_txq *txq, |
3392 | unsigned long *frame_cnt, | |
3393 | unsigned long *byte_cnt) | |
3394 | { | |
3395 | struct txq_info *txqi = to_txq_info(txq); | |
3396 | ||
3397 | if (frame_cnt) | |
fa962b92 | 3398 | *frame_cnt = txqi->tin.backlog_packets; |
f2ac7e30 MK |
3399 | |
3400 | if (byte_cnt) | |
fa962b92 | 3401 | *byte_cnt = txqi->tin.backlog_bytes; |
f2ac7e30 MK |
3402 | } |
3403 | EXPORT_SYMBOL(ieee80211_txq_get_depth); |