blob: 8349c91250ef4119580c20c27971de2d238b9ca9 [file] [log] [blame]
Johannes Bergc2d15602007-07-27 15:43:23 +02001/*
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>
Johannes Bergd98ad832014-09-03 15:24:57 +03006 * Copyright 2013-2014 Intel Mobile Communications GmbH
Johannes Bergda6a4352017-04-26 12:14:59 +02007 * Copyright (C) 2015-2017 Intel Deutschland GmbH
Haim Dreyfusse552af02018-03-28 13:24:10 +03008 * Copyright (C) 2018 Intel Corporation
Johannes Bergc2d15602007-07-27 15:43:23 +02009 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * utilities for mac80211
15 */
16
17#include <net/mac80211.h>
18#include <linux/netdevice.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040019#include <linux/export.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020020#include <linux/types.h>
21#include <linux/slab.h>
22#include <linux/skbuff.h>
23#include <linux/etherdevice.h>
24#include <linux/if_arp.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020025#include <linux/bitmap.h>
Johannes Bergdd769862011-11-18 16:54:50 +010026#include <linux/crc32.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070027#include <net/net_namespace.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020028#include <net/cfg80211.h>
Johannes Bergdabeb342007-11-09 01:57:29 +010029#include <net/rtnetlink.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020030
31#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020032#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040033#include "rate.h"
Luis Carlos Coboee385852008-02-23 15:17:11 +010034#include "mesh.h"
Johannes Bergc2d15602007-07-27 15:43:23 +020035#include "wme.h"
Johannes Bergf2753dd2009-04-14 10:09:24 +020036#include "led.h"
Johannes Bergfffd0932009-07-08 14:22:54 +020037#include "wep.h"
Johannes Bergc2d15602007-07-27 15:43:23 +020038
39/* privid for wiphys to determine whether they belong to us or not */
Johannes Berg8a47cea2014-01-20 23:55:44 +010040const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
Johannes Bergc2d15602007-07-27 15:43:23 +020041
Luis R. Rodriguez9a953712009-01-22 15:05:53 -080042struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
43{
44 struct ieee80211_local *local;
45 BUG_ON(!wiphy);
46
47 local = wiphy_priv(wiphy);
48 return &local->hw;
49}
50EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
Johannes Bergc2d15602007-07-27 15:43:23 +020051
Johannes Berg5cf121c2008-02-25 16:27:43 +010052void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
Johannes Bergc2d15602007-07-27 15:43:23 +020053{
Johannes Berg252b86c2011-11-16 15:28:55 +010054 struct sk_buff *skb;
Johannes Berg2de8e0d2009-03-23 17:28:35 +010055 struct ieee80211_hdr *hdr;
Johannes Bergc2d15602007-07-27 15:43:23 +020056
Johannes Berg252b86c2011-11-16 15:28:55 +010057 skb_queue_walk(&tx->skbs, skb) {
Johannes Berg2de8e0d2009-03-23 17:28:35 +010058 hdr = (struct ieee80211_hdr *) skb->data;
59 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
Johannes Berg252b86c2011-11-16 15:28:55 +010060 }
Johannes Bergc2d15602007-07-27 15:43:23 +020061}
62
Johannes Berg57fbcce2016-04-12 15:56:15 +020063int ieee80211_frame_duration(enum nl80211_band band, size_t len,
Simon Wunderlich438b61b2013-07-08 16:55:51 +020064 int rate, int erp, int short_preamble,
65 int shift)
Johannes Bergc2d15602007-07-27 15:43:23 +020066{
67 int dur;
68
69 /* calculate duration (in microseconds, rounded up to next higher
70 * integer if it includes a fractional microsecond) to send frame of
71 * len bytes (does not include FCS) at the given rate. Duration will
72 * also include SIFS.
73 *
74 * rate is in 100 kbps, so divident is multiplied by 10 in the
75 * DIV_ROUND_UP() operations.
Simon Wunderlich438b61b2013-07-08 16:55:51 +020076 *
77 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
78 * is assumed to be 0 otherwise.
Johannes Bergc2d15602007-07-27 15:43:23 +020079 */
80
Johannes Berg57fbcce2016-04-12 15:56:15 +020081 if (band == NL80211_BAND_5GHZ || erp) {
Johannes Bergc2d15602007-07-27 15:43:23 +020082 /*
83 * OFDM:
84 *
85 * N_DBPS = DATARATE x 4
86 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
87 * (16 = SIGNAL time, 6 = tail bits)
88 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
89 *
90 * T_SYM = 4 usec
Simon Wunderlich438b61b2013-07-08 16:55:51 +020091 * 802.11a - 18.5.2: aSIFSTime = 16 usec
Johannes Bergc2d15602007-07-27 15:43:23 +020092 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
93 * signal ext = 6 usec
94 */
Johannes Bergc2d15602007-07-27 15:43:23 +020095 dur = 16; /* SIFS + signal ext */
Simon Wunderlich438b61b2013-07-08 16:55:51 +020096 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
97 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
Simon Wunderlich438b61b2013-07-08 16:55:51 +020098
99 /* IEEE 802.11-2012 18.3.2.4: all values above are:
100 * * times 4 for 5 MHz
101 * * times 2 for 10 MHz
102 */
103 dur *= 1 << shift;
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200104
105 /* rates should already consider the channel bandwidth,
106 * don't apply divisor again.
107 */
108 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
109 4 * rate); /* T_SYM x N_SYM */
Johannes Bergc2d15602007-07-27 15:43:23 +0200110 } else {
111 /*
112 * 802.11b or 802.11g with 802.11b compatibility:
113 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
114 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
115 *
116 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
117 * aSIFSTime = 10 usec
118 * aPreambleLength = 144 usec or 72 usec with short preamble
119 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
120 */
121 dur = 10; /* aSIFSTime = 10 usec */
122 dur += short_preamble ? (72 + 24) : (144 + 48);
123
124 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
125 }
126
127 return dur;
128}
129
130/* Exported duration function for driver use */
Johannes Berg32bfd352007-12-19 01:31:26 +0100131__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
132 struct ieee80211_vif *vif,
Johannes Berg57fbcce2016-04-12 15:56:15 +0200133 enum nl80211_band band,
Johannes Berg8318d782008-01-24 19:38:38 +0100134 size_t frame_len,
135 struct ieee80211_rate *rate)
Johannes Bergc2d15602007-07-27 15:43:23 +0200136{
Johannes Berg25d834e2008-09-12 22:52:47 +0200137 struct ieee80211_sub_if_data *sdata;
Johannes Bergc2d15602007-07-27 15:43:23 +0200138 u16 dur;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200139 int erp, shift = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200140 bool short_preamble = false;
Johannes Bergc2d15602007-07-27 15:43:23 +0200141
Johannes Berg8318d782008-01-24 19:38:38 +0100142 erp = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200143 if (vif) {
144 sdata = vif_to_sdata(vif);
Johannes Bergbda39332008-10-11 01:51:51 +0200145 short_preamble = sdata->vif.bss_conf.use_short_preamble;
Johannes Berg25d834e2008-09-12 22:52:47 +0200146 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
147 erp = rate->flags & IEEE80211_RATE_ERP_G;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200148 shift = ieee80211_vif_get_shift(vif);
Johannes Berg25d834e2008-09-12 22:52:47 +0200149 }
Johannes Berg8318d782008-01-24 19:38:38 +0100150
Michal Kazior4ee73f32012-04-11 08:47:56 +0200151 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200152 short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200153
154 return cpu_to_le16(dur);
155}
156EXPORT_SYMBOL(ieee80211_generic_frame_duration);
157
Johannes Berg32bfd352007-12-19 01:31:26 +0100158__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
159 struct ieee80211_vif *vif, size_t frame_len,
Johannes Berge039fa42008-05-15 12:55:29 +0200160 const struct ieee80211_tx_info *frame_txctl)
Johannes Bergc2d15602007-07-27 15:43:23 +0200161{
162 struct ieee80211_local *local = hw_to_local(hw);
163 struct ieee80211_rate *rate;
Johannes Berg25d834e2008-09-12 22:52:47 +0200164 struct ieee80211_sub_if_data *sdata;
Johannes Berg471b3ef2007-12-28 14:32:58 +0100165 bool short_preamble;
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200166 int erp, shift = 0, bitrate;
Johannes Bergc2d15602007-07-27 15:43:23 +0200167 u16 dur;
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200168 struct ieee80211_supported_band *sband;
169
Michal Kazior4ee73f32012-04-11 08:47:56 +0200170 sband = local->hw.wiphy->bands[frame_txctl->band];
Johannes Bergc2d15602007-07-27 15:43:23 +0200171
Johannes Berg25d834e2008-09-12 22:52:47 +0200172 short_preamble = false;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200173
Johannes Berge039fa42008-05-15 12:55:29 +0200174 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
Johannes Berg8318d782008-01-24 19:38:38 +0100175
176 erp = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200177 if (vif) {
178 sdata = vif_to_sdata(vif);
Johannes Bergbda39332008-10-11 01:51:51 +0200179 short_preamble = sdata->vif.bss_conf.use_short_preamble;
Johannes Berg25d834e2008-09-12 22:52:47 +0200180 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
181 erp = rate->flags & IEEE80211_RATE_ERP_G;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200182 shift = ieee80211_vif_get_shift(vif);
Johannes Berg25d834e2008-09-12 22:52:47 +0200183 }
Johannes Bergc2d15602007-07-27 15:43:23 +0200184
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200185 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
186
Johannes Bergc2d15602007-07-27 15:43:23 +0200187 /* CTS duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200188 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200189 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200190 /* Data frame duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200191 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200192 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200193 /* ACK duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200194 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200195 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200196
197 return cpu_to_le16(dur);
198}
199EXPORT_SYMBOL(ieee80211_rts_duration);
200
Johannes Berg32bfd352007-12-19 01:31:26 +0100201__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
202 struct ieee80211_vif *vif,
Johannes Bergc2d15602007-07-27 15:43:23 +0200203 size_t frame_len,
Johannes Berge039fa42008-05-15 12:55:29 +0200204 const struct ieee80211_tx_info *frame_txctl)
Johannes Bergc2d15602007-07-27 15:43:23 +0200205{
206 struct ieee80211_local *local = hw_to_local(hw);
207 struct ieee80211_rate *rate;
Johannes Berg25d834e2008-09-12 22:52:47 +0200208 struct ieee80211_sub_if_data *sdata;
Johannes Berg471b3ef2007-12-28 14:32:58 +0100209 bool short_preamble;
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200210 int erp, shift = 0, bitrate;
Johannes Bergc2d15602007-07-27 15:43:23 +0200211 u16 dur;
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200212 struct ieee80211_supported_band *sband;
213
Michal Kazior4ee73f32012-04-11 08:47:56 +0200214 sband = local->hw.wiphy->bands[frame_txctl->band];
Johannes Bergc2d15602007-07-27 15:43:23 +0200215
Johannes Berg25d834e2008-09-12 22:52:47 +0200216 short_preamble = false;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200217
Johannes Berge039fa42008-05-15 12:55:29 +0200218 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
Johannes Berg8318d782008-01-24 19:38:38 +0100219 erp = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200220 if (vif) {
221 sdata = vif_to_sdata(vif);
Johannes Bergbda39332008-10-11 01:51:51 +0200222 short_preamble = sdata->vif.bss_conf.use_short_preamble;
Johannes Berg25d834e2008-09-12 22:52:47 +0200223 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
224 erp = rate->flags & IEEE80211_RATE_ERP_G;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200225 shift = ieee80211_vif_get_shift(vif);
Johannes Berg25d834e2008-09-12 22:52:47 +0200226 }
Johannes Bergc2d15602007-07-27 15:43:23 +0200227
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200228 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
229
Johannes Bergc2d15602007-07-27 15:43:23 +0200230 /* Data frame duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200231 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200232 erp, short_preamble, shift);
Johannes Berge039fa42008-05-15 12:55:29 +0200233 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
Johannes Bergc2d15602007-07-27 15:43:23 +0200234 /* ACK duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200235 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200236 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200237 }
238
Johannes Bergc2d15602007-07-27 15:43:23 +0200239 return cpu_to_le16(dur);
240}
241EXPORT_SYMBOL(ieee80211_ctstoself_duration);
242
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530243static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
244{
245 struct ieee80211_local *local = sdata->local;
246 struct ieee80211_vif *vif = &sdata->vif;
247 struct fq *fq = &local->fq;
248 struct ps_data *ps = NULL;
249 struct txq_info *txqi;
250 struct sta_info *sta;
251 int i;
252
253 spin_lock_bh(&fq->lock);
254
255 if (sdata->vif.type == NL80211_IFTYPE_AP)
256 ps = &sdata->bss->ps;
257
258 sdata->vif.txqs_stopped[ac] = false;
259
260 list_for_each_entry_rcu(sta, &local->sta_list, list) {
261 if (sdata != sta->sdata)
262 continue;
263
264 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
265 struct ieee80211_txq *txq = sta->sta.txq[i];
266
Erik Stromdahla5ae3262018-09-14 18:00:34 +0200267 if (!txq)
268 continue;
269
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530270 txqi = to_txq_info(txq);
271
272 if (ac != txq->ac)
273 continue;
274
275 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
276 &txqi->flags))
277 continue;
278
279 spin_unlock_bh(&fq->lock);
280 drv_wake_tx_queue(local, txqi);
281 spin_lock_bh(&fq->lock);
282 }
283 }
284
285 if (!vif->txq)
286 goto out;
287
288 txqi = to_txq_info(vif->txq);
289
290 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
291 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
292 goto out;
293
294 spin_unlock_bh(&fq->lock);
295
296 drv_wake_tx_queue(local, txqi);
297 return;
298out:
299 spin_unlock_bh(&fq->lock);
300}
301
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200302static void
303__releases(&local->queue_stop_reason_lock)
304__acquires(&local->queue_stop_reason_lock)
305_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530306{
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530307 struct ieee80211_sub_if_data *sdata;
308 int n_acs = IEEE80211_NUM_ACS;
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530309 int i;
310
311 rcu_read_lock();
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530312
313 if (local->hw.queues < IEEE80211_NUM_ACS)
314 n_acs = 1;
315
316 for (i = 0; i < local->hw.queues; i++) {
317 if (local->queue_stop_reasons[i])
318 continue;
319
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200320 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530321 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
322 int ac;
323
324 for (ac = 0; ac < n_acs; ac++) {
325 int ac_queue = sdata->vif.hw_queue[ac];
326
327 if (ac_queue == i ||
328 sdata->vif.cab_queue == i)
329 __ieee80211_wake_txqs(sdata, ac);
330 }
331 }
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200332 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530333 }
334
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530335 rcu_read_unlock();
336}
337
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200338void ieee80211_wake_txqs(unsigned long data)
339{
340 struct ieee80211_local *local = (struct ieee80211_local *)data;
341 unsigned long flags;
342
343 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
344 _ieee80211_wake_txqs(local, &flags);
345 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
346}
347
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200348void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
349{
350 struct ieee80211_sub_if_data *sdata;
Johannes Berga6f38ac2012-07-04 12:49:59 +0200351 int n_acs = IEEE80211_NUM_ACS;
352
Michal Kazior80a83cf2016-05-19 10:37:48 +0200353 if (local->ops->wake_tx_queue)
354 return;
355
Johannes Berga6f38ac2012-07-04 12:49:59 +0200356 if (local->hw.queues < IEEE80211_NUM_ACS)
357 n_acs = 1;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200358
359 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
360 int ac;
361
Johannes Bergf142c6b2012-06-18 20:07:15 +0200362 if (!sdata->dev)
363 continue;
364
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200365 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
366 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
367 continue;
368
Johannes Berga6f38ac2012-07-04 12:49:59 +0200369 for (ac = 0; ac < n_acs; ac++) {
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200370 int ac_queue = sdata->vif.hw_queue[ac];
371
372 if (ac_queue == queue ||
373 (sdata->vif.cab_queue == queue &&
374 local->queue_stop_reasons[ac_queue] == 0 &&
375 skb_queue_empty(&local->pending[ac_queue])))
376 netif_wake_subqueue(sdata->dev, ac);
377 }
378 }
379}
380
Kalle Valoce7c9112008-12-18 23:35:20 +0200381static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300382 enum queue_stop_reason reason,
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200383 bool refcounted,
384 unsigned long *flags)
Johannes Bergc2d15602007-07-27 15:43:23 +0200385{
386 struct ieee80211_local *local = hw_to_local(hw);
387
Johannes Bergb5878a22010-04-07 16:48:40 +0200388 trace_wake_queue(local, queue, reason);
389
Johannes Berge4e72fb2009-03-23 17:28:42 +0100390 if (WARN_ON(queue >= hw->queues))
391 return;
Kalle Valoce7c9112008-12-18 23:35:20 +0200392
Johannes Bergada15122012-03-28 11:04:27 +0200393 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
394 return;
395
Johannes Berg856142c2015-11-24 15:29:53 +0100396 if (!refcounted) {
Luciano Coelhocca07b02014-06-13 16:30:05 +0300397 local->q_stop_reasons[queue][reason] = 0;
Johannes Berg856142c2015-11-24 15:29:53 +0100398 } else {
Luciano Coelhocca07b02014-06-13 16:30:05 +0300399 local->q_stop_reasons[queue][reason]--;
Johannes Berg856142c2015-11-24 15:29:53 +0100400 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
401 local->q_stop_reasons[queue][reason] = 0;
402 }
Luciano Coelhocca07b02014-06-13 16:30:05 +0300403
404 if (local->q_stop_reasons[queue][reason] == 0)
405 __clear_bit(reason, &local->queue_stop_reasons[queue]);
Johannes Berg96f5e662009-02-12 00:51:53 +0100406
407 if (local->queue_stop_reasons[queue] != 0)
408 /* someone still has this queue stopped */
409 return;
410
Johannes Berg7236fe22010-03-22 13:42:43 -0700411 if (skb_queue_empty(&local->pending[queue])) {
412 rcu_read_lock();
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200413 ieee80211_propagate_queue_wake(local, queue);
Johannes Berg7236fe22010-03-22 13:42:43 -0700414 rcu_read_unlock();
415 } else
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200416 tasklet_schedule(&local->tx_pending_tasklet);
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530417
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200418 /*
419 * Calling _ieee80211_wake_txqs here can be a problem because it may
420 * release queue_stop_reason_lock which has been taken by
421 * __ieee80211_wake_queue's caller. It is certainly not very nice to
422 * release someone's lock, but it is fine because all the callers of
423 * __ieee80211_wake_queue call it right before releasing the lock.
424 */
425 if (local->ops->wake_tx_queue) {
426 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
427 tasklet_schedule(&local->wake_txqs_tasklet);
428 else
429 _ieee80211_wake_txqs(local, flags);
430 }
Johannes Bergc2d15602007-07-27 15:43:23 +0200431}
Kalle Valoce7c9112008-12-18 23:35:20 +0200432
Johannes Berg96f5e662009-02-12 00:51:53 +0100433void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300434 enum queue_stop_reason reason,
435 bool refcounted)
Kalle Valoce7c9112008-12-18 23:35:20 +0200436{
437 struct ieee80211_local *local = hw_to_local(hw);
438 unsigned long flags;
439
440 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200441 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
Kalle Valoce7c9112008-12-18 23:35:20 +0200442 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
443}
444
445void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
446{
447 ieee80211_wake_queue_by_reason(hw, queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300448 IEEE80211_QUEUE_STOP_REASON_DRIVER,
449 false);
Kalle Valoce7c9112008-12-18 23:35:20 +0200450}
Johannes Bergc2d15602007-07-27 15:43:23 +0200451EXPORT_SYMBOL(ieee80211_wake_queue);
452
Kalle Valoce7c9112008-12-18 23:35:20 +0200453static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300454 enum queue_stop_reason reason,
455 bool refcounted)
Johannes Bergc2d15602007-07-27 15:43:23 +0200456{
457 struct ieee80211_local *local = hw_to_local(hw);
Johannes Bergcf0277e2010-01-05 18:00:58 +0100458 struct ieee80211_sub_if_data *sdata;
Johannes Berga6f38ac2012-07-04 12:49:59 +0200459 int n_acs = IEEE80211_NUM_ACS;
Johannes Bergc2d15602007-07-27 15:43:23 +0200460
Johannes Bergb5878a22010-04-07 16:48:40 +0200461 trace_stop_queue(local, queue, reason);
462
Johannes Berge4e72fb2009-03-23 17:28:42 +0100463 if (WARN_ON(queue >= hw->queues))
464 return;
Johannes Berg96f5e662009-02-12 00:51:53 +0100465
Luciano Coelhocca07b02014-06-13 16:30:05 +0300466 if (!refcounted)
467 local->q_stop_reasons[queue][reason] = 1;
468 else
469 local->q_stop_reasons[queue][reason]++;
Johannes Bergada15122012-03-28 11:04:27 +0200470
Luciano Coelhocca07b02014-06-13 16:30:05 +0300471 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
472 return;
Johannes Bergcf0277e2010-01-05 18:00:58 +0100473
Johannes Berga6f38ac2012-07-04 12:49:59 +0200474 if (local->hw.queues < IEEE80211_NUM_ACS)
475 n_acs = 1;
476
Johannes Bergcf0277e2010-01-05 18:00:58 +0100477 rcu_read_lock();
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200478 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
479 int ac;
480
Johannes Bergf142c6b2012-06-18 20:07:15 +0200481 if (!sdata->dev)
482 continue;
483
Johannes Berga6f38ac2012-07-04 12:49:59 +0200484 for (ac = 0; ac < n_acs; ac++) {
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200485 if (sdata->vif.hw_queue[ac] == queue ||
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530486 sdata->vif.cab_queue == queue) {
487 if (!local->ops->wake_tx_queue) {
488 netif_stop_subqueue(sdata->dev, ac);
489 continue;
490 }
491 spin_lock(&local->fq.lock);
492 sdata->vif.txqs_stopped[ac] = true;
493 spin_unlock(&local->fq.lock);
494 }
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200495 }
496 }
Johannes Bergcf0277e2010-01-05 18:00:58 +0100497 rcu_read_unlock();
Johannes Bergc2d15602007-07-27 15:43:23 +0200498}
Kalle Valoce7c9112008-12-18 23:35:20 +0200499
Johannes Berg96f5e662009-02-12 00:51:53 +0100500void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300501 enum queue_stop_reason reason,
502 bool refcounted)
Kalle Valoce7c9112008-12-18 23:35:20 +0200503{
504 struct ieee80211_local *local = hw_to_local(hw);
505 unsigned long flags;
506
507 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Luciano Coelhocca07b02014-06-13 16:30:05 +0300508 __ieee80211_stop_queue(hw, queue, reason, refcounted);
Kalle Valoce7c9112008-12-18 23:35:20 +0200509 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
510}
511
512void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
513{
514 ieee80211_stop_queue_by_reason(hw, queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300515 IEEE80211_QUEUE_STOP_REASON_DRIVER,
516 false);
Kalle Valoce7c9112008-12-18 23:35:20 +0200517}
Johannes Bergc2d15602007-07-27 15:43:23 +0200518EXPORT_SYMBOL(ieee80211_stop_queue);
519
Johannes Berg8f77f382009-06-07 21:58:37 +0200520void ieee80211_add_pending_skb(struct ieee80211_local *local,
521 struct sk_buff *skb)
522{
523 struct ieee80211_hw *hw = &local->hw;
524 unsigned long flags;
Johannes Berga7bc3762009-07-27 10:33:31 +0200525 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200526 int queue = info->hw_queue;
Johannes Berga7bc3762009-07-27 10:33:31 +0200527
528 if (WARN_ON(!info->control.vif)) {
Felix Fietkaud4fa14c2012-10-10 22:40:23 +0200529 ieee80211_free_txskb(&local->hw, skb);
Johannes Berga7bc3762009-07-27 10:33:31 +0200530 return;
531 }
Johannes Berg8f77f382009-06-07 21:58:37 +0200532
533 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Luciano Coelhocca07b02014-06-13 16:30:05 +0300534 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
535 false);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200536 __skb_queue_tail(&local->pending[queue], skb);
Luciano Coelhocca07b02014-06-13 16:30:05 +0300537 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200538 false, &flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200539 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
540}
541
Johannes Berge3685e02014-02-20 11:19:58 +0100542void ieee80211_add_pending_skbs(struct ieee80211_local *local,
543 struct sk_buff_head *skbs)
Johannes Berg8f77f382009-06-07 21:58:37 +0200544{
545 struct ieee80211_hw *hw = &local->hw;
546 struct sk_buff *skb;
547 unsigned long flags;
Johannes Bergb0b97a82011-09-29 16:04:30 +0200548 int queue, i;
Johannes Berg8f77f382009-06-07 21:58:37 +0200549
550 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200551 while ((skb = skb_dequeue(skbs))) {
Johannes Berga7bc3762009-07-27 10:33:31 +0200552 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
553
554 if (WARN_ON(!info->control.vif)) {
Felix Fietkaud4fa14c2012-10-10 22:40:23 +0200555 ieee80211_free_txskb(&local->hw, skb);
Johannes Berga7bc3762009-07-27 10:33:31 +0200556 continue;
557 }
558
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200559 queue = info->hw_queue;
Johannes Berg4644ae82012-03-28 11:04:28 +0200560
561 __ieee80211_stop_queue(hw, queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300562 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
563 false);
Johannes Berg4644ae82012-03-28 11:04:28 +0200564
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200565 __skb_queue_tail(&local->pending[queue], skb);
Johannes Berg8f77f382009-06-07 21:58:37 +0200566 }
567
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200568 for (i = 0; i < hw->queues; i++)
Johannes Berg8f77f382009-06-07 21:58:37 +0200569 __ieee80211_wake_queue(hw, i,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300570 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200571 false, &flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200572 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200573}
574
Kalle Valoce7c9112008-12-18 23:35:20 +0200575void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +0100576 unsigned long queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300577 enum queue_stop_reason reason,
578 bool refcounted)
Johannes Bergc2d15602007-07-27 15:43:23 +0200579{
Kalle Valoce7c9112008-12-18 23:35:20 +0200580 struct ieee80211_local *local = hw_to_local(hw);
581 unsigned long flags;
Johannes Bergc2d15602007-07-27 15:43:23 +0200582 int i;
583
Kalle Valoce7c9112008-12-18 23:35:20 +0200584 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
585
Johannes Berg445ea4e2013-02-13 12:25:28 +0100586 for_each_set_bit(i, &queues, hw->queues)
Luciano Coelhocca07b02014-06-13 16:30:05 +0300587 __ieee80211_stop_queue(hw, i, reason, refcounted);
Kalle Valoce7c9112008-12-18 23:35:20 +0200588
589 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
590}
591
592void ieee80211_stop_queues(struct ieee80211_hw *hw)
593{
Johannes Berg445ea4e2013-02-13 12:25:28 +0100594 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300595 IEEE80211_QUEUE_STOP_REASON_DRIVER,
596 false);
Johannes Bergc2d15602007-07-27 15:43:23 +0200597}
598EXPORT_SYMBOL(ieee80211_stop_queues);
599
Tomas Winkler92ab8532008-07-24 21:02:04 +0300600int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
601{
602 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200603 unsigned long flags;
604 int ret;
Johannes Berg96f5e662009-02-12 00:51:53 +0100605
Johannes Berge4e72fb2009-03-23 17:28:42 +0100606 if (WARN_ON(queue >= hw->queues))
607 return true;
Johannes Berg96f5e662009-02-12 00:51:53 +0100608
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200609 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Thomas Pedersen2419ea12013-04-10 15:41:40 -0700610 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
611 &local->queue_stop_reasons[queue]);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200612 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
613 return ret;
Tomas Winkler92ab8532008-07-24 21:02:04 +0300614}
615EXPORT_SYMBOL(ieee80211_queue_stopped);
616
Kalle Valoce7c9112008-12-18 23:35:20 +0200617void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +0100618 unsigned long queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300619 enum queue_stop_reason reason,
620 bool refcounted)
Johannes Bergc2d15602007-07-27 15:43:23 +0200621{
Kalle Valoce7c9112008-12-18 23:35:20 +0200622 struct ieee80211_local *local = hw_to_local(hw);
623 unsigned long flags;
Johannes Bergc2d15602007-07-27 15:43:23 +0200624 int i;
625
Kalle Valoce7c9112008-12-18 23:35:20 +0200626 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
627
Johannes Berg445ea4e2013-02-13 12:25:28 +0100628 for_each_set_bit(i, &queues, hw->queues)
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200629 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
Kalle Valoce7c9112008-12-18 23:35:20 +0200630
631 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
632}
633
634void ieee80211_wake_queues(struct ieee80211_hw *hw)
635{
Johannes Berg445ea4e2013-02-13 12:25:28 +0100636 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300637 IEEE80211_QUEUE_STOP_REASON_DRIVER,
638 false);
Johannes Bergc2d15602007-07-27 15:43:23 +0200639}
640EXPORT_SYMBOL(ieee80211_wake_queues);
Johannes Bergdabeb342007-11-09 01:57:29 +0100641
Luciano Coelho26da23b2014-06-13 16:30:06 +0300642static unsigned int
643ieee80211_get_vif_queues(struct ieee80211_local *local,
644 struct ieee80211_sub_if_data *sdata)
Johannes Berg39ecc012013-02-13 12:11:00 +0100645{
Luciano Coelho26da23b2014-06-13 16:30:06 +0300646 unsigned int queues;
Johannes Berg39ecc012013-02-13 12:11:00 +0100647
Johannes Berg30686bf2015-06-02 21:39:54 +0200648 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
Johannes Berg39ecc012013-02-13 12:11:00 +0100649 int ac;
650
651 queues = 0;
652
653 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
654 queues |= BIT(sdata->vif.hw_queue[ac]);
655 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
656 queues |= BIT(sdata->vif.cab_queue);
657 } else {
658 /* all queues */
659 queues = BIT(local->hw.queues) - 1;
660 }
661
Luciano Coelho26da23b2014-06-13 16:30:06 +0300662 return queues;
663}
664
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200665void __ieee80211_flush_queues(struct ieee80211_local *local,
666 struct ieee80211_sub_if_data *sdata,
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200667 unsigned int queues, bool drop)
Luciano Coelho26da23b2014-06-13 16:30:06 +0300668{
Luciano Coelho26da23b2014-06-13 16:30:06 +0300669 if (!local->ops->flush)
670 return;
671
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200672 /*
673 * If no queue was set, or if the HW doesn't support
674 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
675 */
Johannes Berg30686bf2015-06-02 21:39:54 +0200676 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200677 queues = ieee80211_get_vif_queues(local, sdata);
Luciano Coelho26da23b2014-06-13 16:30:06 +0300678
Luciano Coelho59f48fe2014-06-13 16:30:04 +0300679 ieee80211_stop_queues_by_reason(&local->hw, queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300680 IEEE80211_QUEUE_STOP_REASON_FLUSH,
681 false);
Johannes Berg445ea4e2013-02-13 12:25:28 +0100682
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200683 drv_flush(local, sdata, queues, drop);
Johannes Berg445ea4e2013-02-13 12:25:28 +0100684
Luciano Coelho59f48fe2014-06-13 16:30:04 +0300685 ieee80211_wake_queues_by_reason(&local->hw, queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300686 IEEE80211_QUEUE_STOP_REASON_FLUSH,
687 false);
Johannes Berg39ecc012013-02-13 12:11:00 +0100688}
689
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200690void ieee80211_flush_queues(struct ieee80211_local *local,
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200691 struct ieee80211_sub_if_data *sdata, bool drop)
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200692{
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200693 __ieee80211_flush_queues(local, sdata, 0, drop);
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200694}
695
Luciano Coelho26da23b2014-06-13 16:30:06 +0300696void ieee80211_stop_vif_queues(struct ieee80211_local *local,
697 struct ieee80211_sub_if_data *sdata,
698 enum queue_stop_reason reason)
699{
700 ieee80211_stop_queues_by_reason(&local->hw,
701 ieee80211_get_vif_queues(local, sdata),
702 reason, true);
703}
704
705void ieee80211_wake_vif_queues(struct ieee80211_local *local,
706 struct ieee80211_sub_if_data *sdata,
707 enum queue_stop_reason reason)
708{
709 ieee80211_wake_queues_by_reason(&local->hw,
710 ieee80211_get_vif_queues(local, sdata),
711 reason, true);
712}
713
Arik Nemtsov3384d752015-03-01 09:10:15 +0200714static void __iterate_interfaces(struct ieee80211_local *local,
715 u32 iter_flags,
716 void (*iterator)(void *data, u8 *mac,
717 struct ieee80211_vif *vif),
718 void *data)
Johannes Bergdabeb342007-11-09 01:57:29 +0100719{
Johannes Bergdabeb342007-11-09 01:57:29 +0100720 struct ieee80211_sub_if_data *sdata;
Arik Nemtsov3384d752015-03-01 09:10:15 +0200721 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
Johannes Bergdabeb342007-11-09 01:57:29 +0100722
Johannes Berge38bad42007-11-28 10:55:32 +0100723 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
Johannes Berg51fb61e2007-12-19 01:31:27 +0100724 switch (sdata->vif.type) {
Johannes Berg05c914f2008-09-11 00:01:58 +0200725 case NL80211_IFTYPE_MONITOR:
Aviya Erenfeldd8212182016-08-29 23:25:15 +0300726 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
Felix Fietkau31eba5b2013-05-28 13:01:53 +0200727 continue;
728 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200729 case NL80211_IFTYPE_AP_VLAN:
Johannes Bergdabeb342007-11-09 01:57:29 +0100730 continue;
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200731 default:
Johannes Bergdabeb342007-11-09 01:57:29 +0100732 break;
733 }
Johannes Berg8b2c9822012-11-06 20:23:30 +0100734 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
Arik Nemtsov3384d752015-03-01 09:10:15 +0200735 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
Johannes Berg8b2c9822012-11-06 20:23:30 +0100736 continue;
Arik Nemtsov3384d752015-03-01 09:10:15 +0200737 if (ieee80211_sdata_running(sdata) || !active_only)
Johannes Berg47846c92009-11-25 17:46:19 +0100738 iterator(data, sdata->vif.addr,
Johannes Berg32bfd352007-12-19 01:31:26 +0100739 &sdata->vif);
Johannes Bergdabeb342007-11-09 01:57:29 +0100740 }
Johannes Berge38bad42007-11-28 10:55:32 +0100741
Johannes Bergc7c71062013-08-21 22:07:20 +0200742 sdata = rcu_dereference_check(local->monitor_sdata,
743 lockdep_is_held(&local->iflist_mtx) ||
744 lockdep_rtnl_is_held());
Johannes Berg8b2c9822012-11-06 20:23:30 +0100745 if (sdata &&
Arik Nemtsov3384d752015-03-01 09:10:15 +0200746 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
Johannes Berg8b2c9822012-11-06 20:23:30 +0100747 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
Johannes Berg685fb722012-07-11 16:38:09 +0200748 iterator(data, sdata->vif.addr, &sdata->vif);
Johannes Bergc7c71062013-08-21 22:07:20 +0200749}
Johannes Berg685fb722012-07-11 16:38:09 +0200750
Arik Nemtsov3384d752015-03-01 09:10:15 +0200751void ieee80211_iterate_interfaces(
Johannes Bergc7c71062013-08-21 22:07:20 +0200752 struct ieee80211_hw *hw, u32 iter_flags,
753 void (*iterator)(void *data, u8 *mac,
754 struct ieee80211_vif *vif),
755 void *data)
756{
757 struct ieee80211_local *local = hw_to_local(hw);
758
759 mutex_lock(&local->iflist_mtx);
Arik Nemtsov3384d752015-03-01 09:10:15 +0200760 __iterate_interfaces(local, iter_flags, iterator, data);
Johannes Bergc7c71062013-08-21 22:07:20 +0200761 mutex_unlock(&local->iflist_mtx);
762}
Arik Nemtsov3384d752015-03-01 09:10:15 +0200763EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
Johannes Bergc7c71062013-08-21 22:07:20 +0200764
765void ieee80211_iterate_active_interfaces_atomic(
766 struct ieee80211_hw *hw, u32 iter_flags,
767 void (*iterator)(void *data, u8 *mac,
768 struct ieee80211_vif *vif),
769 void *data)
770{
771 struct ieee80211_local *local = hw_to_local(hw);
772
773 rcu_read_lock();
Arik Nemtsov3384d752015-03-01 09:10:15 +0200774 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
775 iterator, data);
Johannes Berge38bad42007-11-28 10:55:32 +0100776 rcu_read_unlock();
Johannes Bergdabeb342007-11-09 01:57:29 +0100777}
Ivo van Doorn2f561fe2008-05-10 13:40:49 +0200778EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
Johannes Berg37ffc8d2008-09-08 16:40:36 +0200779
Johannes Bergc7c71062013-08-21 22:07:20 +0200780void ieee80211_iterate_active_interfaces_rtnl(
781 struct ieee80211_hw *hw, u32 iter_flags,
782 void (*iterator)(void *data, u8 *mac,
783 struct ieee80211_vif *vif),
784 void *data)
785{
786 struct ieee80211_local *local = hw_to_local(hw);
787
788 ASSERT_RTNL();
789
Arik Nemtsov3384d752015-03-01 09:10:15 +0200790 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
791 iterator, data);
Johannes Bergc7c71062013-08-21 22:07:20 +0200792}
793EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
794
Arik Nemtsov0fc1e042014-10-22 12:30:59 +0300795static void __iterate_stations(struct ieee80211_local *local,
796 void (*iterator)(void *data,
797 struct ieee80211_sta *sta),
798 void *data)
799{
800 struct sta_info *sta;
801
802 list_for_each_entry_rcu(sta, &local->sta_list, list) {
803 if (!sta->uploaded)
804 continue;
805
806 iterator(data, &sta->sta);
807 }
808}
809
810void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
811 void (*iterator)(void *data,
812 struct ieee80211_sta *sta),
813 void *data)
814{
815 struct ieee80211_local *local = hw_to_local(hw);
816
817 rcu_read_lock();
818 __iterate_stations(local, iterator, data);
819 rcu_read_unlock();
820}
821EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
822
Johannes Bergad7e7182013-11-13 13:37:47 +0100823struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
824{
825 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
826
827 if (!ieee80211_sdata_running(sdata) ||
828 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
829 return NULL;
830 return &sdata->vif;
831}
832EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
833
Emmanuel Grumbachdc5a1ad2015-03-12 08:53:24 +0200834struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
835{
Johannes Berg6513e982015-06-10 20:18:55 +0300836 struct ieee80211_sub_if_data *sdata;
837
838 if (!vif)
839 return NULL;
840
841 sdata = vif_to_sdata(vif);
Emmanuel Grumbachdc5a1ad2015-03-12 08:53:24 +0200842
843 if (!ieee80211_sdata_running(sdata) ||
844 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
845 return NULL;
846
847 return &sdata->wdev;
848}
849EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
850
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400851/*
852 * Nothing should have been stuffed into the workqueue during
Emmanuel Grumbach4afaff12015-01-22 23:32:46 +0200853 * the suspend->resume cycle. Since we can't check each caller
854 * of this function if we are already quiescing / suspended,
855 * check here and don't WARN since this can actually happen when
856 * the rx path (for example) is racing against __ieee80211_suspend
857 * and suspending / quiescing was set after the rx path checked
858 * them.
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400859 */
860static bool ieee80211_can_queue_work(struct ieee80211_local *local)
861{
Emmanuel Grumbach4afaff12015-01-22 23:32:46 +0200862 if (local->quiescing || (local->suspended && !local->resuming)) {
863 pr_warn("queueing ieee80211 work while going to suspend\n");
Johannes Bergceb99fe2009-11-19 14:29:39 +0100864 return false;
Emmanuel Grumbach4afaff12015-01-22 23:32:46 +0200865 }
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400866
867 return true;
868}
869
870void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
871{
872 struct ieee80211_local *local = hw_to_local(hw);
873
874 if (!ieee80211_can_queue_work(local))
875 return;
876
877 queue_work(local->workqueue, work);
878}
879EXPORT_SYMBOL(ieee80211_queue_work);
880
881void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
882 struct delayed_work *dwork,
883 unsigned long delay)
884{
885 struct ieee80211_local *local = hw_to_local(hw);
886
887 if (!ieee80211_can_queue_work(local))
888 return;
889
890 queue_delayed_work(local->workqueue, dwork, delay);
891}
892EXPORT_SYMBOL(ieee80211_queue_delayed_work);
893
Sara Sharon78ac51f2019-01-16 18:22:56 +0200894static u32
895_ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
896 struct ieee802_11_elems *elems,
897 u64 filter, u32 crc, u8 *transmitter_bssid,
898 u8 *bss_bssid)
Johannes Bergdd769862011-11-18 16:54:50 +0100899{
Sara Sharon78ac51f2019-01-16 18:22:56 +0200900 const struct element *elem, *sub;
Johannes Bergdd769862011-11-18 16:54:50 +0100901 bool calc_crc = filter != 0;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800902 DECLARE_BITMAP(seen_elems, 256);
Johannes Bergb2e506b2013-03-26 14:54:16 +0100903 const u8 *ie;
Johannes Bergdd769862011-11-18 16:54:50 +0100904
Paul Stewartfcff4f12012-02-23 17:59:53 -0800905 bitmap_zero(seen_elems, 256);
Johannes Bergdd769862011-11-18 16:54:50 +0100906
Johannes Bergc17e28d2019-02-07 22:18:19 +0100907 for_each_element(elem, start, len) {
Paul Stewartfcff4f12012-02-23 17:59:53 -0800908 bool elem_parse_failed;
Johannes Bergc17e28d2019-02-07 22:18:19 +0100909 u8 id = elem->id;
910 u8 elen = elem->datalen;
911 const u8 *pos = elem->data;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800912
Johannes Berg9690fb12012-10-24 14:19:53 +0200913 switch (id) {
914 case WLAN_EID_SSID:
915 case WLAN_EID_SUPP_RATES:
916 case WLAN_EID_FH_PARAMS:
917 case WLAN_EID_DS_PARAMS:
918 case WLAN_EID_CF_PARAMS:
919 case WLAN_EID_TIM:
920 case WLAN_EID_IBSS_PARAMS:
921 case WLAN_EID_CHALLENGE:
922 case WLAN_EID_RSN:
923 case WLAN_EID_ERP_INFO:
924 case WLAN_EID_EXT_SUPP_RATES:
925 case WLAN_EID_HT_CAPABILITY:
926 case WLAN_EID_HT_OPERATION:
927 case WLAN_EID_VHT_CAPABILITY:
928 case WLAN_EID_VHT_OPERATION:
929 case WLAN_EID_MESH_ID:
930 case WLAN_EID_MESH_CONFIG:
931 case WLAN_EID_PEER_MGMT:
932 case WLAN_EID_PREQ:
933 case WLAN_EID_PREP:
934 case WLAN_EID_PERR:
935 case WLAN_EID_RANN:
936 case WLAN_EID_CHANNEL_SWITCH:
937 case WLAN_EID_EXT_CHANSWITCH_ANN:
938 case WLAN_EID_COUNTRY:
939 case WLAN_EID_PWR_CONSTRAINT:
940 case WLAN_EID_TIMEOUT_INTERVAL:
Johannes Berg85220d72013-03-25 18:29:27 +0100941 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
Johannes Bergb2e506b2013-03-26 14:54:16 +0100942 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
Chun-Yeow Yeoh8f2535b2013-10-14 19:08:27 -0700943 case WLAN_EID_CHAN_SWITCH_PARAM:
Arik Nemtsov9041c1f2014-11-09 18:50:15 +0200944 case WLAN_EID_EXT_CAPABILITY:
Arik Nemtsov538375842014-11-09 18:50:18 +0200945 case WLAN_EID_CHAN_SWITCH_TIMING:
946 case WLAN_EID_LINK_ID:
Avraham Sterne38a0172017-04-26 10:58:47 +0300947 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
Johannes Bergb2e506b2013-03-26 14:54:16 +0100948 /*
949 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
950 * that if the content gets bigger it might be needed more than once
951 */
Johannes Berg9690fb12012-10-24 14:19:53 +0200952 if (test_bit(id, seen_elems)) {
953 elems->parse_error = true;
Johannes Berg9690fb12012-10-24 14:19:53 +0200954 continue;
955 }
956 break;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800957 }
Johannes Bergdd769862011-11-18 16:54:50 +0100958
959 if (calc_crc && id < 64 && (filter & (1ULL << id)))
960 crc = crc32_be(crc, pos - 2, elen + 2);
961
Paul Stewartfcff4f12012-02-23 17:59:53 -0800962 elem_parse_failed = false;
963
Johannes Bergdd769862011-11-18 16:54:50 +0100964 switch (id) {
Arik Nemtsov538375842014-11-09 18:50:18 +0200965 case WLAN_EID_LINK_ID:
966 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
967 elem_parse_failed = true;
968 break;
969 }
970 elems->lnk_id = (void *)(pos - 2);
971 break;
972 case WLAN_EID_CHAN_SWITCH_TIMING:
973 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
974 elem_parse_failed = true;
975 break;
976 }
977 elems->ch_sw_timing = (void *)pos;
978 break;
Arik Nemtsov9041c1f2014-11-09 18:50:15 +0200979 case WLAN_EID_EXT_CAPABILITY:
980 elems->ext_capab = pos;
981 elems->ext_capab_len = elen;
982 break;
Johannes Bergdd769862011-11-18 16:54:50 +0100983 case WLAN_EID_SSID:
984 elems->ssid = pos;
985 elems->ssid_len = elen;
986 break;
987 case WLAN_EID_SUPP_RATES:
988 elems->supp_rates = pos;
989 elems->supp_rates_len = elen;
990 break;
Johannes Bergdd769862011-11-18 16:54:50 +0100991 case WLAN_EID_DS_PARAMS:
Johannes Berg1cd8e882013-03-27 14:30:12 +0100992 if (elen >= 1)
993 elems->ds_params = pos;
994 else
995 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +0100996 break;
Johannes Bergdd769862011-11-18 16:54:50 +0100997 case WLAN_EID_TIM:
998 if (elen >= sizeof(struct ieee80211_tim_ie)) {
999 elems->tim = (void *)pos;
1000 elems->tim_len = elen;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001001 } else
1002 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001003 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001004 case WLAN_EID_CHALLENGE:
1005 elems->challenge = pos;
1006 elems->challenge_len = elen;
1007 break;
1008 case WLAN_EID_VENDOR_SPECIFIC:
1009 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1010 pos[2] == 0xf2) {
1011 /* Microsoft OUI (00:50:F2) */
1012
1013 if (calc_crc)
1014 crc = crc32_be(crc, pos - 2, elen + 2);
1015
Johannes Berg441a33b2013-02-12 16:27:04 +01001016 if (elen >= 5 && pos[3] == 2) {
Johannes Bergdd769862011-11-18 16:54:50 +01001017 /* OUI Type 2 - WMM IE */
1018 if (pos[4] == 0) {
1019 elems->wmm_info = pos;
1020 elems->wmm_info_len = elen;
1021 } else if (pos[4] == 1) {
1022 elems->wmm_param = pos;
1023 elems->wmm_param_len = elen;
1024 }
1025 }
1026 }
1027 break;
1028 case WLAN_EID_RSN:
1029 elems->rsn = pos;
1030 elems->rsn_len = elen;
1031 break;
1032 case WLAN_EID_ERP_INFO:
Johannes Berg1946bed2013-03-27 14:31:53 +01001033 if (elen >= 1)
1034 elems->erp_info = pos;
1035 else
1036 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001037 break;
1038 case WLAN_EID_EXT_SUPP_RATES:
1039 elems->ext_supp_rates = pos;
1040 elems->ext_supp_rates_len = elen;
1041 break;
1042 case WLAN_EID_HT_CAPABILITY:
1043 if (elen >= sizeof(struct ieee80211_ht_cap))
1044 elems->ht_cap_elem = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001045 else
1046 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001047 break;
Johannes Berg074d46d2012-03-15 19:45:16 +01001048 case WLAN_EID_HT_OPERATION:
1049 if (elen >= sizeof(struct ieee80211_ht_operation))
1050 elems->ht_operation = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001051 else
1052 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001053 break;
Mahesh Palivela818255e2012-10-10 11:33:04 +00001054 case WLAN_EID_VHT_CAPABILITY:
1055 if (elen >= sizeof(struct ieee80211_vht_cap))
1056 elems->vht_cap_elem = (void *)pos;
1057 else
1058 elem_parse_failed = true;
1059 break;
1060 case WLAN_EID_VHT_OPERATION:
1061 if (elen >= sizeof(struct ieee80211_vht_operation))
1062 elems->vht_operation = (void *)pos;
1063 else
1064 elem_parse_failed = true;
1065 break;
Johannes Bergbee7f5862013-02-07 22:24:55 +01001066 case WLAN_EID_OPMODE_NOTIF:
1067 if (elen > 0)
1068 elems->opmode_notif = pos;
1069 else
1070 elem_parse_failed = true;
1071 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001072 case WLAN_EID_MESH_ID:
1073 elems->mesh_id = pos;
1074 elems->mesh_id_len = elen;
1075 break;
1076 case WLAN_EID_MESH_CONFIG:
1077 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1078 elems->mesh_config = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001079 else
1080 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001081 break;
1082 case WLAN_EID_PEER_MGMT:
1083 elems->peering = pos;
1084 elems->peering_len = elen;
1085 break;
Marco Porsch3f52b7e2013-01-30 18:14:08 +01001086 case WLAN_EID_MESH_AWAKE_WINDOW:
1087 if (elen >= 2)
1088 elems->awake_window = (void *)pos;
1089 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001090 case WLAN_EID_PREQ:
1091 elems->preq = pos;
1092 elems->preq_len = elen;
1093 break;
1094 case WLAN_EID_PREP:
1095 elems->prep = pos;
1096 elems->prep_len = elen;
1097 break;
1098 case WLAN_EID_PERR:
1099 elems->perr = pos;
1100 elems->perr_len = elen;
1101 break;
1102 case WLAN_EID_RANN:
1103 if (elen >= sizeof(struct ieee80211_rann_ie))
1104 elems->rann = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001105 else
1106 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001107 break;
1108 case WLAN_EID_CHANNEL_SWITCH:
Johannes Berg5bc14202012-08-01 16:13:02 +02001109 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1110 elem_parse_failed = true;
1111 break;
1112 }
1113 elems->ch_switch_ie = (void *)pos;
Johannes Bergdd769862011-11-18 16:54:50 +01001114 break;
Johannes Bergb4f286a12013-03-26 14:13:58 +01001115 case WLAN_EID_EXT_CHANSWITCH_ANN:
1116 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1117 elem_parse_failed = true;
1118 break;
1119 }
1120 elems->ext_chansw_ie = (void *)pos;
1121 break;
Johannes Berg85220d72013-03-25 18:29:27 +01001122 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1123 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1124 elem_parse_failed = true;
1125 break;
1126 }
1127 elems->sec_chan_offs = (void *)pos;
1128 break;
Chun-Yeow Yeoh8f2535b2013-10-14 19:08:27 -07001129 case WLAN_EID_CHAN_SWITCH_PARAM:
1130 if (elen !=
1131 sizeof(*elems->mesh_chansw_params_ie)) {
1132 elem_parse_failed = true;
1133 break;
1134 }
1135 elems->mesh_chansw_params_ie = (void *)pos;
1136 break;
Johannes Bergb2e506b2013-03-26 14:54:16 +01001137 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1138 if (!action ||
1139 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1140 elem_parse_failed = true;
1141 break;
1142 }
1143 elems->wide_bw_chansw_ie = (void *)pos;
1144 break;
1145 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1146 if (action) {
1147 elem_parse_failed = true;
1148 break;
1149 }
1150 /*
1151 * This is a bit tricky, but as we only care about
1152 * the wide bandwidth channel switch element, so
1153 * just parse it out manually.
1154 */
1155 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1156 pos, elen);
1157 if (ie) {
1158 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1159 elems->wide_bw_chansw_ie =
1160 (void *)(ie + 2);
1161 else
1162 elem_parse_failed = true;
1163 }
1164 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001165 case WLAN_EID_COUNTRY:
1166 elems->country_elem = pos;
1167 elems->country_elem_len = elen;
1168 break;
1169 case WLAN_EID_PWR_CONSTRAINT:
Johannes Berg761a48d2012-09-05 13:07:00 +02001170 if (elen != 1) {
1171 elem_parse_failed = true;
1172 break;
1173 }
Johannes Bergdd769862011-11-18 16:54:50 +01001174 elems->pwr_constr_elem = pos;
Johannes Bergdd769862011-11-18 16:54:50 +01001175 break;
Steinar H. Gundersonc8d65912014-09-03 06:48:37 -07001176 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1177 /* Lots of different options exist, but we only care
1178 * about the Dynamic Transmit Power Control element.
1179 * First check for the Cisco OUI, then for the DTPC
1180 * tag (0x00).
1181 */
1182 if (elen < 4) {
1183 elem_parse_failed = true;
1184 break;
1185 }
1186
1187 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1188 pos[2] != 0x96 || pos[3] != 0x00)
1189 break;
1190
1191 if (elen != 6) {
1192 elem_parse_failed = true;
1193 break;
1194 }
1195
1196 if (calc_crc)
1197 crc = crc32_be(crc, pos - 2, elen + 2);
1198
1199 elems->cisco_dtpc_elem = pos;
1200 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001201 case WLAN_EID_TIMEOUT_INTERVAL:
Johannes Berg79ba1d82013-03-27 14:38:07 +01001202 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1203 elems->timeout_int = (void *)pos;
1204 else
1205 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001206 break;
Avraham Sterne38a0172017-04-26 10:58:47 +03001207 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1208 if (elen >= sizeof(*elems->max_idle_period_ie))
1209 elems->max_idle_period_ie = (void *)pos;
1210 break;
Sara Sharon78ac51f2019-01-16 18:22:56 +02001211 case WLAN_EID_MULTIPLE_BSSID:
1212 if (!bss_bssid || !transmitter_bssid || elen < 4)
1213 break;
1214
1215 elems->max_bssid_indicator = pos[0];
1216
1217 for_each_element(sub, pos + 1, elen - 1) {
1218 u8 sub_len = sub->datalen;
1219 u8 new_bssid[ETH_ALEN];
1220 const u8 *index;
1221
1222 /*
1223 * we only expect the "non-transmitted BSSID
1224 * profile" subelement (subelement id 0)
1225 */
1226 if (sub->id != 0 || sub->datalen < 4) {
1227 /* not a valid BSS profile */
1228 continue;
1229 }
1230
1231 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1232 sub->data[1] != 2) {
1233 /* The first element of the
1234 * Nontransmitted BSSID Profile is not
1235 * the Nontransmitted BSSID Capability
1236 * element.
1237 */
1238 continue;
1239 }
1240
1241 /* found a Nontransmitted BSSID Profile */
1242 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1243 sub->data, sub_len);
1244 if (!index || index[1] < 1 || index[2] == 0) {
1245 /* Invalid MBSSID Index element */
1246 continue;
1247 }
1248
1249 cfg80211_gen_new_bssid(transmitter_bssid,
1250 pos[0],
1251 index[2],
1252 new_bssid);
1253 if (ether_addr_equal(new_bssid, bss_bssid)) {
1254 elems->nontransmitted_bssid_profile =
1255 (void *)sub;
1256 elems->bssid_index_len = index[1];
1257 elems->bssid_index = (void *)&index[2];
1258 break;
1259 }
1260 }
1261 break;
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001262 case WLAN_EID_EXTENSION:
1263 if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA &&
1264 elen >= (sizeof(*elems->mu_edca_param_set) + 1)) {
1265 elems->mu_edca_param_set = (void *)&pos[1];
Shaul Triebitz2e249fc2018-12-15 11:03:15 +02001266 if (calc_crc)
1267 crc = crc32_be(crc, pos - 2, elen + 2);
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001268 } else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) {
1269 elems->he_cap = (void *)&pos[1];
1270 elems->he_cap_len = elen - 1;
1271 } else if (pos[0] == WLAN_EID_EXT_HE_OPERATION &&
1272 elen >= sizeof(*elems->he_operation) &&
1273 elen >= ieee80211_he_oper_size(&pos[1])) {
1274 elems->he_operation = (void *)&pos[1];
1275 } else if (pos[0] == WLAN_EID_EXT_UORA && elen >= 1) {
1276 elems->uora_element = (void *)&pos[1];
Sara Sharon78ac51f2019-01-16 18:22:56 +02001277 } else if (pos[0] ==
1278 WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION &&
1279 elen == 3) {
1280 elems->mbssid_config_ie = (void *)&pos[1];
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001281 }
1282 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001283 default:
1284 break;
1285 }
1286
Paul Stewartfcff4f12012-02-23 17:59:53 -08001287 if (elem_parse_failed)
1288 elems->parse_error = true;
1289 else
Johannes Berg5df45692012-10-24 14:22:37 +02001290 __set_bit(id, seen_elems);
Johannes Bergdd769862011-11-18 16:54:50 +01001291 }
1292
Johannes Bergc17e28d2019-02-07 22:18:19 +01001293 if (!for_each_element_completed(elem, start, len))
Paul Stewartfcff4f12012-02-23 17:59:53 -08001294 elems->parse_error = true;
1295
Johannes Bergdd769862011-11-18 16:54:50 +01001296 return crc;
1297}
1298
Sara Sharon78ac51f2019-01-16 18:22:56 +02001299u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1300 struct ieee802_11_elems *elems,
1301 u64 filter, u32 crc, u8 *transmitter_bssid,
1302 u8 *bss_bssid)
1303{
1304 memset(elems, 0, sizeof(*elems));
1305 elems->ie_start = start;
1306 elems->total_len = len;
1307
1308 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1309 crc, transmitter_bssid, bss_bssid);
1310
1311 /* Override with nontransmitted profile, if found */
1312 if (transmitter_bssid && elems->nontransmitted_bssid_profile) {
1313 const u8 *profile = elems->nontransmitted_bssid_profile;
1314
1315 _ieee802_11_parse_elems_crc(&profile[2], profile[1],
1316 action, elems, 0, 0,
1317 transmitter_bssid, bss_bssid);
1318 }
1319
1320 if (elems->tim && !elems->parse_error) {
1321 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1322
1323 elems->dtim_period = tim_ie->dtim_period;
1324 elems->dtim_count = tim_ie->dtim_count;
1325 }
1326
1327 /* Override DTIM period and count if needed */
1328 if (elems->bssid_index &&
1329 elems->bssid_index_len >=
1330 offsetofend(struct ieee80211_bssid_index, dtim_period))
1331 elems->dtim_period = elems->bssid_index->dtim_period;
1332
1333 if (elems->bssid_index &&
1334 elems->bssid_index_len >=
1335 offsetofend(struct ieee80211_bssid_index, dtim_count))
1336 elems->dtim_count = elems->bssid_index->dtim_count;
1337
1338 return crc;
1339}
1340
Haim Dreyfusse552af02018-03-28 13:24:10 +03001341void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1342 struct ieee80211_tx_queue_params
1343 *qparam, int ac)
1344{
1345 struct ieee80211_chanctx_conf *chanctx_conf;
1346 const struct ieee80211_reg_rule *rrule;
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001347 const struct ieee80211_wmm_ac *wmm_ac;
Haim Dreyfusse552af02018-03-28 13:24:10 +03001348 u16 center_freq = 0;
1349
1350 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1351 sdata->vif.type != NL80211_IFTYPE_STATION)
1352 return;
1353
1354 rcu_read_lock();
1355 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1356 if (chanctx_conf)
1357 center_freq = chanctx_conf->def.chan->center_freq;
1358
1359 if (!center_freq) {
1360 rcu_read_unlock();
1361 return;
1362 }
1363
1364 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1365
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001366 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
Haim Dreyfusse552af02018-03-28 13:24:10 +03001367 rcu_read_unlock();
1368 return;
1369 }
1370
1371 if (sdata->vif.type == NL80211_IFTYPE_AP)
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001372 wmm_ac = &rrule->wmm_rule.ap[ac];
Haim Dreyfusse552af02018-03-28 13:24:10 +03001373 else
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001374 wmm_ac = &rrule->wmm_rule.client[ac];
Haim Dreyfusse552af02018-03-28 13:24:10 +03001375 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1376 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1377 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
Dreyfuss, Haimabd76d22018-08-31 11:31:04 +03001378 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
Haim Dreyfusse552af02018-03-28 13:24:10 +03001379 rcu_read_unlock();
1380}
1381
Johannes Berg3abead52012-03-02 15:56:59 +01001382void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
Johannes Bergcec66282015-10-22 17:46:04 +02001383 bool bss_notify, bool enable_qos)
Johannes Berg5825fe102008-09-09 12:56:01 +02001384{
1385 struct ieee80211_local *local = sdata->local;
1386 struct ieee80211_tx_queue_params qparam;
Johannes Berg55de9082012-07-26 17:24:39 +02001387 struct ieee80211_chanctx_conf *chanctx_conf;
Johannes Berg54bcbc62012-03-28 11:04:25 +02001388 int ac;
Johannes Bergcec66282015-10-22 17:46:04 +02001389 bool use_11b;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001390 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
Johannes Bergaa837e12009-05-07 16:16:24 +02001391 int aCWmin, aCWmax;
Johannes Berg5825fe102008-09-09 12:56:01 +02001392
1393 if (!local->ops->conf_tx)
1394 return;
1395
Johannes Berg54bcbc62012-03-28 11:04:25 +02001396 if (local->hw.queues < IEEE80211_NUM_ACS)
1397 return;
1398
Johannes Berg5825fe102008-09-09 12:56:01 +02001399 memset(&qparam, 0, sizeof(qparam));
1400
Johannes Berg55de9082012-07-26 17:24:39 +02001401 rcu_read_lock();
1402 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1403 use_11b = (chanctx_conf &&
Johannes Berg57fbcce2016-04-12 15:56:15 +02001404 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
Johannes Bergaa837e12009-05-07 16:16:24 +02001405 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
Johannes Berg55de9082012-07-26 17:24:39 +02001406 rcu_read_unlock();
Johannes Berg5825fe102008-09-09 12:56:01 +02001407
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001408 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1409
Fred Zhou1f4ffde2013-09-09 23:03:41 +08001410 /* Set defaults according to 802.11-2007 Table 7-37 */
1411 aCWmax = 1023;
1412 if (use_11b)
1413 aCWmin = 31;
1414 else
1415 aCWmin = 15;
Johannes Berg5825fe102008-09-09 12:56:01 +02001416
Fred Zhou1f4ffde2013-09-09 23:03:41 +08001417 /* Confiure old 802.11b/g medium access rules. */
1418 qparam.cw_max = aCWmax;
1419 qparam.cw_min = aCWmin;
1420 qparam.txop = 0;
1421 qparam.aifs = 2;
1422
1423 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1424 /* Update if QoS is enabled. */
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001425 if (enable_qos) {
1426 switch (ac) {
1427 case IEEE80211_AC_BK:
1428 qparam.cw_max = aCWmax;
1429 qparam.cw_min = aCWmin;
1430 qparam.txop = 0;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001431 if (is_ocb)
1432 qparam.aifs = 9;
1433 else
1434 qparam.aifs = 7;
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001435 break;
1436 /* never happens but let's not leave undefined */
1437 default:
1438 case IEEE80211_AC_BE:
1439 qparam.cw_max = aCWmax;
1440 qparam.cw_min = aCWmin;
1441 qparam.txop = 0;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001442 if (is_ocb)
1443 qparam.aifs = 6;
1444 else
1445 qparam.aifs = 3;
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001446 break;
1447 case IEEE80211_AC_VI:
1448 qparam.cw_max = aCWmin;
1449 qparam.cw_min = (aCWmin + 1) / 2 - 1;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001450 if (is_ocb)
1451 qparam.txop = 0;
1452 else if (use_11b)
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001453 qparam.txop = 6016/32;
1454 else
1455 qparam.txop = 3008/32;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001456
1457 if (is_ocb)
1458 qparam.aifs = 3;
1459 else
1460 qparam.aifs = 2;
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001461 break;
1462 case IEEE80211_AC_VO:
1463 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1464 qparam.cw_min = (aCWmin + 1) / 4 - 1;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001465 if (is_ocb)
1466 qparam.txop = 0;
1467 else if (use_11b)
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001468 qparam.txop = 3264/32;
1469 else
1470 qparam.txop = 1504/32;
1471 qparam.aifs = 2;
1472 break;
1473 }
Johannes Bergaa837e12009-05-07 16:16:24 +02001474 }
Haim Dreyfusse552af02018-03-28 13:24:10 +03001475 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
Johannes Berg5825fe102008-09-09 12:56:01 +02001476
Kalle Valoab133152010-01-12 10:42:31 +02001477 qparam.uapsd = false;
1478
Johannes Berg54bcbc62012-03-28 11:04:25 +02001479 sdata->tx_conf[ac] = qparam;
1480 drv_conf_tx(local, sdata, ac, &qparam);
Johannes Bergaa837e12009-05-07 16:16:24 +02001481 }
Stanislaw Gruszkae1b3ec12010-03-29 12:18:34 +02001482
Johannes Bergf142c6b2012-06-18 20:07:15 +02001483 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
Ayala Beker708d50e2016-09-20 17:31:14 +03001484 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1485 sdata->vif.type != NL80211_IFTYPE_NAN) {
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001486 sdata->vif.bss_conf.qos = enable_qos;
Johannes Berg3abead52012-03-02 15:56:59 +01001487 if (bss_notify)
1488 ieee80211_bss_info_change_notify(sdata,
1489 BSS_CHANGED_QOS);
Sujithd9734972010-07-23 10:47:11 +05301490 }
Johannes Berg5825fe102008-09-09 12:56:01 +02001491}
Johannes Berge50db652008-09-09 15:07:09 +02001492
Johannes Berg46900292009-02-15 12:44:28 +01001493void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
Jouni Malinen700e8ea2012-09-30 19:29:37 +03001494 u16 transaction, u16 auth_alg, u16 status,
Johannes Berg4a3cb702013-02-12 16:43:19 +01001495 const u8 *extra, size_t extra_len, const u8 *da,
Johannes Berg1672c0e32013-01-29 15:02:27 +01001496 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1497 u32 tx_flags)
Johannes Berg46900292009-02-15 12:44:28 +01001498{
1499 struct ieee80211_local *local = sdata->local;
1500 struct sk_buff *skb;
1501 struct ieee80211_mgmt *mgmt;
Johannes Bergfffd0932009-07-08 14:22:54 +02001502 int err;
Johannes Berg46900292009-02-15 12:44:28 +01001503
Fred Zhou15e230a2013-09-24 10:33:01 +08001504 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
Max Stepanov744462a2014-06-10 20:00:08 +03001505 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1506 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
Joe Perchesd15b8452011-08-29 14:17:31 -07001507 if (!skb)
Johannes Berg46900292009-02-15 12:44:28 +01001508 return;
Joe Perchesd15b8452011-08-29 14:17:31 -07001509
Max Stepanov744462a2014-06-10 20:00:08 +03001510 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
Johannes Berg46900292009-02-15 12:44:28 +01001511
Johannes Bergb080db52017-06-16 14:29:19 +02001512 mgmt = skb_put_zero(skb, 24 + 6);
Johannes Berg46900292009-02-15 12:44:28 +01001513 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1514 IEEE80211_STYPE_AUTH);
Antonio Quartulliefa6a092012-01-09 19:43:06 +01001515 memcpy(mgmt->da, da, ETH_ALEN);
Johannes Berg47846c92009-11-25 17:46:19 +01001516 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
Johannes Berg46900292009-02-15 12:44:28 +01001517 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1518 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1519 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
Jouni Malinen700e8ea2012-09-30 19:29:37 +03001520 mgmt->u.auth.status_code = cpu_to_le16(status);
Johannes Berg46900292009-02-15 12:44:28 +01001521 if (extra)
Johannes Berg59ae1d12017-06-16 14:29:20 +02001522 skb_put_data(skb, extra, extra_len);
Johannes Berg46900292009-02-15 12:44:28 +01001523
Johannes Bergfffd0932009-07-08 14:22:54 +02001524 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1525 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1526 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1527 WARN_ON(err);
1528 }
1529
Johannes Berg1672c0e32013-01-29 15:02:27 +01001530 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1531 tx_flags;
Johannes Berg62ae67b2009-11-18 18:42:05 +01001532 ieee80211_tx_skb(sdata, skb);
Johannes Berg46900292009-02-15 12:44:28 +01001533}
1534
Antonio Quartulli6ae16772012-09-07 13:28:52 +02001535void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1536 const u8 *bssid, u16 stype, u16 reason,
1537 bool send_frame, u8 *frame_buf)
1538{
1539 struct ieee80211_local *local = sdata->local;
1540 struct sk_buff *skb;
1541 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1542
1543 /* build frame */
1544 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1545 mgmt->duration = 0; /* initialize only */
1546 mgmt->seq_ctrl = 0; /* initialize only */
1547 memcpy(mgmt->da, bssid, ETH_ALEN);
1548 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1549 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1550 /* u.deauth.reason_code == u.disassoc.reason_code */
1551 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1552
1553 if (send_frame) {
1554 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1555 IEEE80211_DEAUTH_FRAME_LEN);
1556 if (!skb)
1557 return;
1558
1559 skb_reserve(skb, local->hw.extra_tx_headroom);
1560
1561 /* copy in frame */
Johannes Berg59ae1d12017-06-16 14:29:20 +02001562 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
Antonio Quartulli6ae16772012-09-07 13:28:52 +02001563
1564 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1565 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1566 IEEE80211_SKB_CB(skb)->flags |=
1567 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1568
1569 ieee80211_tx_skb(sdata, skb);
1570 }
1571}
1572
David Spinadelc56ef672014-02-05 15:21:13 +02001573static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1574 u8 *buffer, size_t buffer_len,
1575 const u8 *ie, size_t ie_len,
Johannes Berg57fbcce2016-04-12 15:56:15 +02001576 enum nl80211_band band,
David Spinadelc56ef672014-02-05 15:21:13 +02001577 u32 rate_mask,
1578 struct cfg80211_chan_def *chandef,
Johannes Berg00387f32018-05-28 15:47:38 +02001579 size_t *offset, u32 flags)
Johannes Bergde95a542009-04-01 11:58:36 +02001580{
1581 struct ieee80211_supported_band *sband;
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001582 const struct ieee80211_sta_he_cap *he_cap;
Johannes Bergc604b9f2012-11-29 12:45:18 +01001583 u8 *pos = buffer, *end = buffer + buffer_len;
David Spinadelc56ef672014-02-05 15:21:13 +02001584 size_t noffset;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001585 int supp_rates_len, i;
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001586 u8 rates[32];
1587 int num_rates;
1588 int ext_rates_len;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001589 int shift;
1590 u32 rate_flags;
Johannes Berg40a11ca2014-11-24 15:49:44 +01001591 bool have_80mhz = false;
Johannes Bergde95a542009-04-01 11:58:36 +02001592
David Spinadelc56ef672014-02-05 15:21:13 +02001593 *offset = 0;
1594
Johannes Berg4d36ec52009-10-27 20:59:55 +01001595 sband = local->hw.wiphy->bands[band];
Arik Nemtsovd811b3d2012-07-09 19:57:28 +03001596 if (WARN_ON_ONCE(!sband))
1597 return 0;
Johannes Bergde95a542009-04-01 11:58:36 +02001598
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001599 rate_flags = ieee80211_chandef_rate_flags(chandef);
1600 shift = ieee80211_chandef_get_shift(chandef);
1601
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001602 num_rates = 0;
1603 for (i = 0; i < sband->n_bitrates; i++) {
1604 if ((BIT(i) & rate_mask) == 0)
1605 continue; /* skip rate */
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001606 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1607 continue;
1608
1609 rates[num_rates++] =
1610 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1611 (1 << shift) * 5);
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001612 }
1613
1614 supp_rates_len = min_t(int, num_rates, 8);
Johannes Berg8e664fb2009-12-23 13:15:38 +01001615
Johannes Bergc604b9f2012-11-29 12:45:18 +01001616 if (end - pos < 2 + supp_rates_len)
1617 goto out_err;
Johannes Bergde95a542009-04-01 11:58:36 +02001618 *pos++ = WLAN_EID_SUPP_RATES;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001619 *pos++ = supp_rates_len;
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001620 memcpy(pos, rates, supp_rates_len);
1621 pos += supp_rates_len;
Johannes Bergde95a542009-04-01 11:58:36 +02001622
Johannes Berg8e664fb2009-12-23 13:15:38 +01001623 /* insert "request information" if in custom IEs */
1624 if (ie && ie_len) {
1625 static const u8 before_extrates[] = {
1626 WLAN_EID_SSID,
1627 WLAN_EID_SUPP_RATES,
1628 WLAN_EID_REQUEST,
1629 };
1630 noffset = ieee80211_ie_split(ie, ie_len,
1631 before_extrates,
1632 ARRAY_SIZE(before_extrates),
David Spinadelc56ef672014-02-05 15:21:13 +02001633 *offset);
1634 if (end - pos < noffset - *offset)
Johannes Bergc604b9f2012-11-29 12:45:18 +01001635 goto out_err;
David Spinadelc56ef672014-02-05 15:21:13 +02001636 memcpy(pos, ie + *offset, noffset - *offset);
1637 pos += noffset - *offset;
1638 *offset = noffset;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001639 }
Johannes Bergde95a542009-04-01 11:58:36 +02001640
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001641 ext_rates_len = num_rates - supp_rates_len;
1642 if (ext_rates_len > 0) {
Johannes Bergc604b9f2012-11-29 12:45:18 +01001643 if (end - pos < 2 + ext_rates_len)
1644 goto out_err;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001645 *pos++ = WLAN_EID_EXT_SUPP_RATES;
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001646 *pos++ = ext_rates_len;
1647 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1648 pos += ext_rates_len;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001649 }
1650
Johannes Berg57fbcce2016-04-12 15:56:15 +02001651 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
Johannes Bergc604b9f2012-11-29 12:45:18 +01001652 if (end - pos < 3)
1653 goto out_err;
Jouni Malinen651b5222010-08-28 19:37:51 +03001654 *pos++ = WLAN_EID_DS_PARAMS;
1655 *pos++ = 1;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001656 *pos++ = ieee80211_frequency_to_channel(
1657 chandef->chan->center_freq);
Jouni Malinen651b5222010-08-28 19:37:51 +03001658 }
1659
Johannes Bergb9771d42018-05-28 15:47:41 +02001660 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1661 goto done;
1662
Johannes Berg8e664fb2009-12-23 13:15:38 +01001663 /* insert custom IEs that go before HT */
1664 if (ie && ie_len) {
1665 static const u8 before_ht[] = {
Johannes Berga7f26d82017-08-05 11:44:32 +03001666 /*
1667 * no need to list the ones split off already
1668 * (or generated here)
1669 */
Johannes Berg8e664fb2009-12-23 13:15:38 +01001670 WLAN_EID_DS_PARAMS,
1671 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1672 };
1673 noffset = ieee80211_ie_split(ie, ie_len,
1674 before_ht, ARRAY_SIZE(before_ht),
David Spinadelc56ef672014-02-05 15:21:13 +02001675 *offset);
1676 if (end - pos < noffset - *offset)
Johannes Bergc604b9f2012-11-29 12:45:18 +01001677 goto out_err;
David Spinadelc56ef672014-02-05 15:21:13 +02001678 memcpy(pos, ie + *offset, noffset - *offset);
1679 pos += noffset - *offset;
1680 *offset = noffset;
Johannes Bergde95a542009-04-01 11:58:36 +02001681 }
1682
Johannes Bergc604b9f2012-11-29 12:45:18 +01001683 if (sband->ht_cap.ht_supported) {
1684 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1685 goto out_err;
Ben Greearef96a8422011-11-18 11:32:00 -08001686 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1687 sband->ht_cap.cap);
Johannes Bergc604b9f2012-11-29 12:45:18 +01001688 }
Johannes Berg5ef2d412009-03-31 12:12:07 +02001689
Johannes Berg4d952302014-02-04 09:48:34 +01001690 /* insert custom IEs that go before VHT */
Johannes Berg8e664fb2009-12-23 13:15:38 +01001691 if (ie && ie_len) {
Johannes Berg4d952302014-02-04 09:48:34 +01001692 static const u8 before_vht[] = {
Johannes Berga7f26d82017-08-05 11:44:32 +03001693 /*
1694 * no need to list the ones split off already
1695 * (or generated here)
1696 */
Johannes Berg4d952302014-02-04 09:48:34 +01001697 WLAN_EID_BSS_COEX_2040,
1698 WLAN_EID_EXT_CAPABILITY,
1699 WLAN_EID_SSID_LIST,
1700 WLAN_EID_CHANNEL_USAGE,
1701 WLAN_EID_INTERWORKING,
Liad Kaufmanb44eebe2017-08-05 11:44:29 +03001702 WLAN_EID_MESH_ID,
Johannes Berga7f26d82017-08-05 11:44:32 +03001703 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
Johannes Berg4d952302014-02-04 09:48:34 +01001704 };
1705 noffset = ieee80211_ie_split(ie, ie_len,
1706 before_vht, ARRAY_SIZE(before_vht),
David Spinadelc56ef672014-02-05 15:21:13 +02001707 *offset);
1708 if (end - pos < noffset - *offset)
Johannes Bergc604b9f2012-11-29 12:45:18 +01001709 goto out_err;
David Spinadelc56ef672014-02-05 15:21:13 +02001710 memcpy(pos, ie + *offset, noffset - *offset);
1711 pos += noffset - *offset;
1712 *offset = noffset;
Johannes Bergde95a542009-04-01 11:58:36 +02001713 }
1714
Johannes Berg40a11ca2014-11-24 15:49:44 +01001715 /* Check if any channel in this sband supports at least 80 MHz */
1716 for (i = 0; i < sband->n_channels; i++) {
Arik Nemtsovfa44b982015-01-01 13:43:17 +02001717 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1718 IEEE80211_CHAN_NO_80MHZ))
1719 continue;
1720
1721 have_80mhz = true;
1722 break;
Johannes Berg40a11ca2014-11-24 15:49:44 +01001723 }
1724
1725 if (sband->vht_cap.vht_supported && have_80mhz) {
Johannes Bergc604b9f2012-11-29 12:45:18 +01001726 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1727 goto out_err;
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00001728 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1729 sband->vht_cap.cap);
Johannes Bergc604b9f2012-11-29 12:45:18 +01001730 }
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00001731
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001732 /* insert custom IEs that go before HE */
1733 if (ie && ie_len) {
1734 static const u8 before_he[] = {
1735 /*
1736 * no need to list the ones split off before VHT
1737 * or generated here
1738 */
1739 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1740 WLAN_EID_AP_CSN,
1741 /* TODO: add 11ah/11aj/11ak elements */
1742 };
1743 noffset = ieee80211_ie_split(ie, ie_len,
1744 before_he, ARRAY_SIZE(before_he),
1745 *offset);
1746 if (end - pos < noffset - *offset)
1747 goto out_err;
1748 memcpy(pos, ie + *offset, noffset - *offset);
1749 pos += noffset - *offset;
1750 *offset = noffset;
1751 }
1752
1753 he_cap = ieee80211_get_he_sta_cap(sband);
1754 if (he_cap) {
1755 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1756 if (!pos)
1757 goto out_err;
1758 }
1759
1760 /*
1761 * If adding more here, adjust code in main.c
1762 * that calculates local->scan_ies_len.
1763 */
1764
Johannes Bergde95a542009-04-01 11:58:36 +02001765 return pos - buffer;
Johannes Bergc604b9f2012-11-29 12:45:18 +01001766 out_err:
1767 WARN_ONCE(1, "not enough space for preq IEs\n");
Johannes Bergb9771d42018-05-28 15:47:41 +02001768 done:
Johannes Bergc604b9f2012-11-29 12:45:18 +01001769 return pos - buffer;
Johannes Bergde95a542009-04-01 11:58:36 +02001770}
1771
David Spinadelc56ef672014-02-05 15:21:13 +02001772int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1773 size_t buffer_len,
1774 struct ieee80211_scan_ies *ie_desc,
1775 const u8 *ie, size_t ie_len,
1776 u8 bands_used, u32 *rate_masks,
Johannes Berg00387f32018-05-28 15:47:38 +02001777 struct cfg80211_chan_def *chandef,
1778 u32 flags)
David Spinadelc56ef672014-02-05 15:21:13 +02001779{
1780 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1781 int i;
1782
1783 memset(ie_desc, 0, sizeof(*ie_desc));
1784
Johannes Berg57fbcce2016-04-12 15:56:15 +02001785 for (i = 0; i < NUM_NL80211_BANDS; i++) {
David Spinadelc56ef672014-02-05 15:21:13 +02001786 if (bands_used & BIT(i)) {
1787 pos += ieee80211_build_preq_ies_band(local,
1788 buffer + pos,
1789 buffer_len - pos,
1790 ie, ie_len, i,
1791 rate_masks[i],
1792 chandef,
Johannes Berg00387f32018-05-28 15:47:38 +02001793 &custom_ie_offset,
1794 flags);
David Spinadelc56ef672014-02-05 15:21:13 +02001795 ie_desc->ies[i] = buffer + old_pos;
1796 ie_desc->len[i] = pos - old_pos;
1797 old_pos = pos;
1798 }
1799 }
1800
1801 /* add any remaining custom IEs */
1802 if (ie && ie_len) {
1803 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1804 "not enough space for preq custom IEs\n"))
1805 return pos;
1806 memcpy(buffer + pos, ie + custom_ie_offset,
1807 ie_len - custom_ie_offset);
1808 ie_desc->common_ies = buffer + pos;
1809 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1810 pos += ie_len - custom_ie_offset;
1811 }
1812
1813 return pos;
1814};
1815
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001816struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
Johannes Berga344d672014-06-12 22:24:31 +02001817 const u8 *src, const u8 *dst,
1818 u32 ratemask,
Johannes Berg6b778632012-07-23 14:53:27 +02001819 struct ieee80211_channel *chan,
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001820 const u8 *ssid, size_t ssid_len,
Paul Stewarta806c552011-06-23 09:00:11 -08001821 const u8 *ie, size_t ie_len,
Johannes Berg00387f32018-05-28 15:47:38 +02001822 u32 flags)
Johannes Berg46900292009-02-15 12:44:28 +01001823{
1824 struct ieee80211_local *local = sdata->local;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001825 struct cfg80211_chan_def chandef;
Johannes Berg46900292009-02-15 12:44:28 +01001826 struct sk_buff *skb;
1827 struct ieee80211_mgmt *mgmt;
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001828 int ies_len;
Johannes Berg57fbcce2016-04-12 15:56:15 +02001829 u32 rate_masks[NUM_NL80211_BANDS] = {};
David Spinadelc56ef672014-02-05 15:21:13 +02001830 struct ieee80211_scan_ies dummy_ie_desc;
Johannes Berg46900292009-02-15 12:44:28 +01001831
Paul Stewarta806c552011-06-23 09:00:11 -08001832 /*
1833 * Do not send DS Channel parameter for directed probe requests
1834 * in order to maximize the chance that we get a response. Some
1835 * badly-behaved APs don't respond when this parameter is included.
1836 */
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001837 chandef.width = sdata->vif.bss_conf.chandef.width;
Johannes Berg00387f32018-05-28 15:47:38 +02001838 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001839 chandef.chan = NULL;
Paul Stewarta806c552011-06-23 09:00:11 -08001840 else
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001841 chandef.chan = chan;
Jouni Malinen651b5222010-08-28 19:37:51 +03001842
Johannes Berga344d672014-06-12 22:24:31 +02001843 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1844 100 + ie_len);
Johannes Berg5b2bbf72011-11-08 13:04:41 +01001845 if (!skb)
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001846 return NULL;
1847
David Spinadelc56ef672014-02-05 15:21:13 +02001848 rate_masks[chan->band] = ratemask;
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001849 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
David Spinadelc56ef672014-02-05 15:21:13 +02001850 skb_tailroom(skb), &dummy_ie_desc,
1851 ie, ie_len, BIT(chan->band),
Johannes Berg00387f32018-05-28 15:47:38 +02001852 rate_masks, &chandef, flags);
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001853 skb_put(skb, ies_len);
Kalle Valo7c12ce82010-01-05 20:16:44 +02001854
Johannes Berg46900292009-02-15 12:44:28 +01001855 if (dst) {
Kalle Valo7c12ce82010-01-05 20:16:44 +02001856 mgmt = (struct ieee80211_mgmt *) skb->data;
Johannes Berg46900292009-02-15 12:44:28 +01001857 memcpy(mgmt->da, dst, ETH_ALEN);
1858 memcpy(mgmt->bssid, dst, ETH_ALEN);
Johannes Berg46900292009-02-15 12:44:28 +01001859 }
Johannes Berg46900292009-02-15 12:44:28 +01001860
Johannes Berg62ae67b2009-11-18 18:42:05 +01001861 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
Johannes Berg5b2bbf72011-11-08 13:04:41 +01001862
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001863 return skb;
1864}
1865
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001866u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
Johannes Berg46900292009-02-15 12:44:28 +01001867 struct ieee802_11_elems *elems,
Johannes Berg57fbcce2016-04-12 15:56:15 +02001868 enum nl80211_band band, u32 *basic_rates)
Johannes Berg46900292009-02-15 12:44:28 +01001869{
1870 struct ieee80211_supported_band *sband;
Johannes Berg46900292009-02-15 12:44:28 +01001871 size_t num_rates;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001872 u32 supp_rates, rate_flags;
1873 int i, j, shift;
Mohammed Shafi Shajakhan21a8e9d2017-04-27 12:45:38 +05301874
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001875 sband = sdata->local->hw.wiphy->bands[band];
Mohammed Shafi Shajakhan21a8e9d2017-04-27 12:45:38 +05301876 if (WARN_ON(!sband))
1877 return 1;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001878
1879 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1880 shift = ieee80211_vif_get_shift(&sdata->vif);
Johannes Berg46900292009-02-15 12:44:28 +01001881
Johannes Berg46900292009-02-15 12:44:28 +01001882 num_rates = sband->n_bitrates;
1883 supp_rates = 0;
1884 for (i = 0; i < elems->supp_rates_len +
1885 elems->ext_supp_rates_len; i++) {
1886 u8 rate = 0;
1887 int own_rate;
Ashok Nagarajan9ebb61a2012-04-02 21:21:21 -07001888 bool is_basic;
Johannes Berg46900292009-02-15 12:44:28 +01001889 if (i < elems->supp_rates_len)
1890 rate = elems->supp_rates[i];
1891 else if (elems->ext_supp_rates)
1892 rate = elems->ext_supp_rates
1893 [i - elems->supp_rates_len];
1894 own_rate = 5 * (rate & 0x7f);
Ashok Nagarajan9ebb61a2012-04-02 21:21:21 -07001895 is_basic = !!(rate & 0x80);
1896
1897 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1898 continue;
1899
1900 for (j = 0; j < num_rates; j++) {
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001901 int brate;
1902 if ((rate_flags & sband->bitrates[j].flags)
1903 != rate_flags)
1904 continue;
1905
1906 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1907 1 << shift);
1908
1909 if (brate == own_rate) {
Johannes Berg46900292009-02-15 12:44:28 +01001910 supp_rates |= BIT(j);
Ashok Nagarajan9ebb61a2012-04-02 21:21:21 -07001911 if (basic_rates && is_basic)
1912 *basic_rates |= BIT(j);
1913 }
1914 }
Johannes Berg46900292009-02-15 12:44:28 +01001915 }
1916 return supp_rates;
1917}
Johannes Bergf2753dd2009-04-14 10:09:24 +02001918
Johannes Berg84f6a012009-08-20 20:02:20 +02001919void ieee80211_stop_device(struct ieee80211_local *local)
1920{
1921 ieee80211_led_radio(local, false);
Johannes Berg67408c82010-11-30 08:59:23 +01001922 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
Johannes Berg84f6a012009-08-20 20:02:20 +02001923
1924 cancel_work_sync(&local->reconfig_filter);
Johannes Berg84f6a012009-08-20 20:02:20 +02001925
1926 flush_workqueue(local->workqueue);
Lennert Buytenhek678f4152010-01-10 14:07:53 +01001927 drv_stop(local);
Johannes Berg84f6a012009-08-20 20:02:20 +02001928}
1929
Johannes Berg74430f92015-12-08 16:04:38 +02001930static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1931 bool aborted)
1932{
1933 /* It's possible that we don't handle the scan completion in
1934 * time during suspend, so if it's still marked as completed
1935 * here, queue the work and flush it to clean things up.
1936 * Instead of calling the worker function directly here, we
1937 * really queue it to avoid potential races with other flows
1938 * scheduling the same work.
1939 */
1940 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1941 /* If coming from reconfiguration failure, abort the scan so
1942 * we don't attempt to continue a partial HW scan - which is
1943 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1944 * completed scan, and a 5 GHz portion is still pending.
1945 */
1946 if (aborted)
1947 set_bit(SCAN_ABORTED, &local->scanning);
1948 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
1949 flush_delayed_work(&local->scan_work);
1950 }
1951}
1952
Johannes Bergf6837ba82014-04-30 14:19:04 +02001953static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1954{
1955 struct ieee80211_sub_if_data *sdata;
1956 struct ieee80211_chanctx *ctx;
1957
1958 /*
1959 * We get here if during resume the device can't be restarted properly.
1960 * We might also get here if this happens during HW reset, which is a
1961 * slightly different situation and we need to drop all connections in
1962 * the latter case.
1963 *
1964 * Ask cfg80211 to turn off all interfaces, this will result in more
1965 * warnings but at least we'll then get into a clean stopped state.
1966 */
1967
1968 local->resuming = false;
1969 local->suspended = false;
Eliad Peller7584f882015-06-10 20:19:37 +03001970 local->in_reconfig = false;
Johannes Bergf6837ba82014-04-30 14:19:04 +02001971
Johannes Berg74430f92015-12-08 16:04:38 +02001972 ieee80211_flush_completed_scan(local, true);
1973
Johannes Bergf6837ba82014-04-30 14:19:04 +02001974 /* scheduled scan clearly can't be running any more, but tell
1975 * cfg80211 and clear local state
1976 */
1977 ieee80211_sched_scan_end(local);
1978
1979 list_for_each_entry(sdata, &local->interfaces, list)
1980 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1981
1982 /* Mark channel contexts as not being in the driver any more to avoid
1983 * removing them from the driver during the shutdown process...
1984 */
1985 mutex_lock(&local->chanctx_mtx);
1986 list_for_each_entry(ctx, &local->chanctx_list, list)
1987 ctx->driver_present = false;
1988 mutex_unlock(&local->chanctx_mtx);
1989
1990 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1991}
1992
Stanislaw Gruszka153a5fc42013-02-28 10:55:30 +01001993static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1994 struct ieee80211_sub_if_data *sdata)
1995{
1996 struct ieee80211_chanctx_conf *conf;
1997 struct ieee80211_chanctx *ctx;
1998
1999 if (!local->use_chanctx)
2000 return;
2001
2002 mutex_lock(&local->chanctx_mtx);
2003 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2004 lockdep_is_held(&local->chanctx_mtx));
2005 if (conf) {
2006 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2007 drv_assign_vif_chanctx(local, sdata, ctx);
2008 }
2009 mutex_unlock(&local->chanctx_mtx);
2010}
2011
Johannes Berg1ea2c862015-12-08 16:04:39 +02002012static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2013{
2014 struct ieee80211_local *local = sdata->local;
2015 struct sta_info *sta;
2016
2017 /* add STAs back */
2018 mutex_lock(&local->sta_mtx);
2019 list_for_each_entry(sta, &local->sta_list, list) {
2020 enum ieee80211_sta_state state;
2021
2022 if (!sta->uploaded || sta->sdata != sdata)
2023 continue;
2024
2025 for (state = IEEE80211_STA_NOTEXIST;
2026 state < sta->sta_state; state++)
2027 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2028 state + 1));
2029 }
2030 mutex_unlock(&local->sta_mtx);
2031}
2032
Ayala Beker167e33f2016-09-20 17:31:20 +03002033static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2034{
2035 struct cfg80211_nan_func *func, **funcs;
2036 int res, id, i = 0;
2037
2038 res = drv_start_nan(sdata->local, sdata,
2039 &sdata->u.nan.conf);
2040 if (WARN_ON(res))
2041 return res;
2042
Kees Cook6396bb22018-06-12 14:03:40 -07002043 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2044 sizeof(*funcs),
2045 GFP_KERNEL);
Ayala Beker167e33f2016-09-20 17:31:20 +03002046 if (!funcs)
2047 return -ENOMEM;
2048
2049 /* Add all the functions:
2050 * This is a little bit ugly. We need to call a potentially sleeping
2051 * callback for each NAN function, so we can't hold the spinlock.
2052 */
2053 spin_lock_bh(&sdata->u.nan.func_lock);
2054
2055 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2056 funcs[i++] = func;
2057
2058 spin_unlock_bh(&sdata->u.nan.func_lock);
2059
2060 for (i = 0; funcs[i]; i++) {
2061 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2062 if (WARN_ON(res))
2063 ieee80211_nan_func_terminated(&sdata->vif,
2064 funcs[i]->instance_id,
2065 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2066 GFP_KERNEL);
2067 }
2068
2069 kfree(funcs);
2070
2071 return 0;
2072}
2073
Johannes Bergf2753dd2009-04-14 10:09:24 +02002074int ieee80211_reconfig(struct ieee80211_local *local)
2075{
2076 struct ieee80211_hw *hw = &local->hw;
2077 struct ieee80211_sub_if_data *sdata;
Johannes Berg55de9082012-07-26 17:24:39 +02002078 struct ieee80211_chanctx *ctx;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002079 struct sta_info *sta;
Eliad Peller2683d652011-07-14 20:29:42 +03002080 int res, i;
Johannes Bergd8881302013-01-10 23:55:33 +01002081 bool reconfig_due_to_wowlan = false;
David Spinadeld43c6b62013-12-08 21:48:57 +02002082 struct ieee80211_sub_if_data *sched_scan_sdata;
Johannes Berg6ea0a692014-11-19 11:55:49 +01002083 struct cfg80211_sched_scan_request *sched_scan_req;
David Spinadeld43c6b62013-12-08 21:48:57 +02002084 bool sched_scan_stopped = false;
Eliad Pellerb0485e92015-07-08 15:41:47 +03002085 bool suspended = local->suspended;
Johannes Bergd8881302013-01-10 23:55:33 +01002086
Eliad Peller0f8b8242014-12-14 11:05:53 +02002087 /* nothing to do if HW shouldn't run */
2088 if (!local->open_count)
2089 goto wake_up;
2090
Johannes Berg8f21b0a2013-01-11 00:28:01 +01002091#ifdef CONFIG_PM
Eliad Pellerb0485e92015-07-08 15:41:47 +03002092 if (suspended)
Johannes Bergceb99fe2009-11-19 14:29:39 +01002093 local->resuming = true;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002094
Johannes Bergeecc4802011-05-04 15:37:29 +02002095 if (local->wowlan) {
Eliad Pellerb0485e92015-07-08 15:41:47 +03002096 /*
2097 * In the wowlan case, both mac80211 and the device
2098 * are functional when the resume op is called, so
2099 * clear local->suspended so the device could operate
2100 * normally (e.g. pass rx frames).
2101 */
2102 local->suspended = false;
Johannes Bergeecc4802011-05-04 15:37:29 +02002103 res = drv_resume(local);
Johannes Berg27b3eb92013-08-07 20:11:55 +02002104 local->wowlan = false;
Johannes Bergeecc4802011-05-04 15:37:29 +02002105 if (res < 0) {
2106 local->resuming = false;
2107 return res;
2108 }
2109 if (res == 0)
2110 goto wake_up;
2111 WARN_ON(res > 1);
2112 /*
2113 * res is 1, which means the driver requested
2114 * to go through a regular reset on wakeup.
Eliad Pellerb0485e92015-07-08 15:41:47 +03002115 * restore local->suspended in this case.
Johannes Bergeecc4802011-05-04 15:37:29 +02002116 */
Johannes Bergd8881302013-01-10 23:55:33 +01002117 reconfig_due_to_wowlan = true;
Eliad Pellerb0485e92015-07-08 15:41:47 +03002118 local->suspended = true;
Johannes Bergeecc4802011-05-04 15:37:29 +02002119 }
2120#endif
Johannes Berg94f9b972011-07-14 16:48:54 +02002121
2122 /*
Eliad Peller43d6df02015-10-25 10:59:35 +02002123 * In case of hw_restart during suspend (without wowlan),
2124 * cancel restart work, as we are reconfiguring the device
2125 * anyway.
2126 * Note that restart_work is scheduled on a frozen workqueue,
2127 * so we can't deadlock in this case.
2128 */
2129 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2130 cancel_work_sync(&local->restart_work);
2131
Eliad Peller968a76c2015-10-25 10:59:36 +02002132 local->started = false;
2133
Eliad Peller43d6df02015-10-25 10:59:35 +02002134 /*
Johannes Berg94f9b972011-07-14 16:48:54 +02002135 * Upon resume hardware can sometimes be goofy due to
2136 * various platform / driver / bus issues, so restarting
2137 * the device may at times not work immediately. Propagate
2138 * the error.
2139 */
2140 res = drv_start(local);
2141 if (res) {
Eliad Pellerb0485e92015-07-08 15:41:47 +03002142 if (suspended)
Johannes Bergf6837ba82014-04-30 14:19:04 +02002143 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2144 else
2145 WARN(1, "Hardware became unavailable during restart.\n");
2146 ieee80211_handle_reconfig_failure(local);
Johannes Berg94f9b972011-07-14 16:48:54 +02002147 return res;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002148 }
2149
Yogesh Ashok Powar7f2819752011-12-30 16:34:25 +05302150 /* setup fragmentation threshold */
2151 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2152
2153 /* setup RTS threshold */
2154 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2155
2156 /* reset coverage class */
2157 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2158
Johannes Berg94f9b972011-07-14 16:48:54 +02002159 ieee80211_led_radio(local, true);
2160 ieee80211_mod_tpt_led_trig(local,
2161 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2162
Johannes Bergf2753dd2009-04-14 10:09:24 +02002163 /* add interfaces */
Johannes Berg4b6f1dd2012-04-03 14:35:57 +02002164 sdata = rtnl_dereference(local->monitor_sdata);
2165 if (sdata) {
Johannes Berg3c3e21e2013-03-27 23:20:27 +01002166 /* in HW restart it exists already */
2167 WARN_ON(local->resuming);
Johannes Berg4b6f1dd2012-04-03 14:35:57 +02002168 res = drv_add_interface(local, sdata);
2169 if (WARN_ON(res)) {
Monam Agarwal0c2bef462014-03-24 00:51:43 +05302170 RCU_INIT_POINTER(local->monitor_sdata, NULL);
Johannes Berg4b6f1dd2012-04-03 14:35:57 +02002171 synchronize_net();
2172 kfree(sdata);
2173 }
2174 }
2175
Johannes Bergf2753dd2009-04-14 10:09:24 +02002176 list_for_each_entry(sdata, &local->interfaces, list) {
2177 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2178 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
Luciano Coelhoc8fff3d2015-03-01 09:10:04 +02002179 ieee80211_sdata_running(sdata)) {
Johannes Berg7b7eab62011-11-03 14:41:13 +01002180 res = drv_add_interface(local, sdata);
Luciano Coelhoc8fff3d2015-03-01 09:10:04 +02002181 if (WARN_ON(res))
2182 break;
2183 }
2184 }
2185
2186 /* If adding any of the interfaces failed above, roll back and
2187 * report failure.
2188 */
2189 if (res) {
2190 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2191 list)
2192 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2193 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2194 ieee80211_sdata_running(sdata))
2195 drv_remove_interface(local, sdata);
2196 ieee80211_handle_reconfig_failure(local);
2197 return res;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002198 }
2199
Johannes Berg55de9082012-07-26 17:24:39 +02002200 /* add channel contexts */
Arend van Sprielf0dea9c2012-11-19 12:01:05 +01002201 if (local->use_chanctx) {
2202 mutex_lock(&local->chanctx_mtx);
2203 list_for_each_entry(ctx, &local->chanctx_list, list)
Michal Kazior5bcae312014-06-25 12:35:06 +02002204 if (ctx->replace_state !=
2205 IEEE80211_CHANCTX_REPLACES_OTHER)
2206 WARN_ON(drv_add_chanctx(local, ctx));
Arend van Sprielf0dea9c2012-11-19 12:01:05 +01002207 mutex_unlock(&local->chanctx_mtx);
Johannes Berg55de9082012-07-26 17:24:39 +02002208
Zhao, Gang7df180f2014-04-26 09:43:40 +08002209 sdata = rtnl_dereference(local->monitor_sdata);
2210 if (sdata && ieee80211_sdata_running(sdata))
2211 ieee80211_assign_chanctx(local, sdata);
2212 }
Johannes Bergfe5f2552012-11-19 22:19:08 +01002213
Johannes Bergf2753dd2009-04-14 10:09:24 +02002214 /* reconfigure hardware */
2215 ieee80211_hw_config(local, ~0);
2216
Johannes Bergf2753dd2009-04-14 10:09:24 +02002217 ieee80211_configure_filter(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +02002218
2219 /* Finally also reconfigure all the BSS information */
2220 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Bergac8dd502010-05-05 09:44:02 +02002221 u32 changed;
2222
Johannes Berg9607e6b662009-12-23 13:15:31 +01002223 if (!ieee80211_sdata_running(sdata))
Johannes Bergf2753dd2009-04-14 10:09:24 +02002224 continue;
Johannes Bergac8dd502010-05-05 09:44:02 +02002225
Johannes Berg1ea2c862015-12-08 16:04:39 +02002226 ieee80211_assign_chanctx(local, sdata);
2227
2228 switch (sdata->vif.type) {
2229 case NL80211_IFTYPE_AP_VLAN:
2230 case NL80211_IFTYPE_MONITOR:
2231 break;
2232 default:
2233 ieee80211_reconfig_stations(sdata);
2234 /* fall through */
2235 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2236 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2237 drv_conf_tx(local, sdata, i,
2238 &sdata->tx_conf[i]);
2239 break;
2240 }
2241
Johannes Bergac8dd502010-05-05 09:44:02 +02002242 /* common change flags for all interface types */
2243 changed = BSS_CHANGED_ERP_CTS_PROT |
2244 BSS_CHANGED_ERP_PREAMBLE |
2245 BSS_CHANGED_ERP_SLOT |
2246 BSS_CHANGED_HT |
2247 BSS_CHANGED_BASIC_RATES |
2248 BSS_CHANGED_BEACON_INT |
2249 BSS_CHANGED_BSSID |
Johannes Berg4ced3f72010-07-19 16:39:04 +02002250 BSS_CHANGED_CQM |
Eliad Peller55de47f2011-11-01 15:16:55 +02002251 BSS_CHANGED_QOS |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +02002252 BSS_CHANGED_IDLE |
Pradeep Kumar Chitrapudcbe73c2018-03-22 12:18:03 -07002253 BSS_CHANGED_TXPOWER |
2254 BSS_CHANGED_MCAST_RATE;
Johannes Bergac8dd502010-05-05 09:44:02 +02002255
Sara Sharonb5a33d52016-02-16 12:48:18 +02002256 if (sdata->vif.mu_mimo_owner)
Sara Sharon23a1f8d2015-12-08 16:04:31 +02002257 changed |= BSS_CHANGED_MU_GROUPS;
2258
Johannes Bergf2753dd2009-04-14 10:09:24 +02002259 switch (sdata->vif.type) {
2260 case NL80211_IFTYPE_STATION:
Eliad Peller0d392e92011-12-12 14:10:49 +02002261 changed |= BSS_CHANGED_ASSOC |
Eliad Pellerab095872012-07-27 12:33:22 +03002262 BSS_CHANGED_ARP_FILTER |
2263 BSS_CHANGED_PS;
Emmanuel Grumbachc65dd142012-12-12 10:12:24 +02002264
Alexander Bondar989c6502013-05-16 17:34:17 +03002265 /* Re-send beacon info report to the driver */
2266 if (sdata->u.mgd.have_beacon)
2267 changed |= BSS_CHANGED_BEACON_INFO;
Emmanuel Grumbachc65dd142012-12-12 10:12:24 +02002268
Avraham Sterne38a0172017-04-26 10:58:47 +03002269 if (sdata->vif.bss_conf.max_idle_period ||
2270 sdata->vif.bss_conf.protected_keep_alive)
2271 changed |= BSS_CHANGED_KEEP_ALIVE;
2272
Johannes Berg8d61ffa2013-05-10 12:32:47 +02002273 sdata_lock(sdata);
Johannes Bergac8dd502010-05-05 09:44:02 +02002274 ieee80211_bss_info_change_notify(sdata, changed);
Johannes Berg8d61ffa2013-05-10 12:32:47 +02002275 sdata_unlock(sdata);
Johannes Bergac8dd502010-05-05 09:44:02 +02002276 break;
Rostislav Lisovy6e0bd6c2014-11-03 10:33:18 +01002277 case NL80211_IFTYPE_OCB:
Rostislav Lisovy239281f2014-11-03 10:33:19 +01002278 changed |= BSS_CHANGED_OCB;
2279 ieee80211_bss_info_change_notify(sdata, changed);
Rostislav Lisovy6e0bd6c2014-11-03 10:33:18 +01002280 break;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002281 case NL80211_IFTYPE_ADHOC:
Johannes Bergac8dd502010-05-05 09:44:02 +02002282 changed |= BSS_CHANGED_IBSS;
2283 /* fall through */
Johannes Bergf2753dd2009-04-14 10:09:24 +02002284 case NL80211_IFTYPE_AP:
Johannes Berg339afbf2012-11-14 15:21:17 +01002285 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
Arik Nemtsove7979ac2011-11-22 19:33:18 +02002286
Pradeep Kumar Chitrapubc847972018-10-03 20:19:20 -07002287 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2288 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2289 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2290 changed |= BSS_CHANGED_FTM_RESPONDER;
2291
Johannes Berg10416382012-10-19 15:44:42 +02002292 if (sdata->vif.type == NL80211_IFTYPE_AP) {
Arik Nemtsove7979ac2011-11-22 19:33:18 +02002293 changed |= BSS_CHANGED_AP_PROBE_RESP;
2294
Johannes Berg10416382012-10-19 15:44:42 +02002295 if (rcu_access_pointer(sdata->u.ap.beacon))
2296 drv_start_ap(local, sdata);
2297 }
2298
Arik Nemtsov78274932011-09-04 11:11:32 +03002299 /* fall through */
Johannes Bergf2753dd2009-04-14 10:09:24 +02002300 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg8da34932012-12-14 14:17:26 +01002301 if (sdata->vif.bss_conf.enable_beacon) {
2302 changed |= BSS_CHANGED_BEACON |
2303 BSS_CHANGED_BEACON_ENABLED;
2304 ieee80211_bss_info_change_notify(sdata, changed);
2305 }
Johannes Bergf2753dd2009-04-14 10:09:24 +02002306 break;
Ayala Beker167e33f2016-09-20 17:31:20 +03002307 case NL80211_IFTYPE_NAN:
2308 res = ieee80211_reconfig_nan(sdata);
2309 if (res < 0) {
2310 ieee80211_handle_reconfig_failure(local);
2311 return res;
2312 }
2313 break;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002314 case NL80211_IFTYPE_WDS:
Johannes Bergf2753dd2009-04-14 10:09:24 +02002315 case NL80211_IFTYPE_AP_VLAN:
2316 case NL80211_IFTYPE_MONITOR:
Johannes Berg98104fde2012-06-16 00:19:54 +02002317 case NL80211_IFTYPE_P2P_DEVICE:
Zhao, Gangb2057862014-04-26 09:43:41 +08002318 /* nothing to do */
Johannes Bergf142c6b2012-06-18 20:07:15 +02002319 break;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002320 case NL80211_IFTYPE_UNSPECIFIED:
Johannes Berg2e161f782010-08-12 15:38:38 +02002321 case NUM_NL80211_IFTYPES:
Johannes Berg2ca27bc2010-09-16 14:58:23 +02002322 case NL80211_IFTYPE_P2P_CLIENT:
2323 case NL80211_IFTYPE_P2P_GO:
Johannes Bergf2753dd2009-04-14 10:09:24 +02002324 WARN_ON(1);
2325 break;
2326 }
2327 }
2328
Johannes Berg4a733ef2015-10-14 18:02:43 +02002329 ieee80211_recalc_ps(local);
Eyal Shapira8e1b23b2011-11-09 12:29:06 +02002330
Johannes Berg2a419052010-06-10 10:21:29 +02002331 /*
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002332 * The sta might be in psm against the ap (e.g. because
2333 * this was the state before a hw restart), so we
2334 * explicitly send a null packet in order to make sure
2335 * it'll sync against the ap (and get out of psm).
2336 */
2337 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2338 list_for_each_entry(sdata, &local->interfaces, list) {
2339 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2340 continue;
Johannes Berg20f544e2012-11-08 14:06:28 +01002341 if (!sdata->u.mgd.associated)
2342 continue;
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002343
Johannes Berg076cdcb2015-09-24 16:14:55 +02002344 ieee80211_send_nullfunc(local, sdata, false);
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002345 }
2346 }
2347
Arik Nemtsov2e8d3972012-06-03 23:31:56 +03002348 /* APs are now beaconing, add back stations */
2349 mutex_lock(&local->sta_mtx);
2350 list_for_each_entry(sta, &local->sta_list, list) {
2351 enum ieee80211_sta_state state;
2352
2353 if (!sta->uploaded)
2354 continue;
2355
mpubbise@codeaurora.org19103a42018-07-02 15:40:14 +05302356 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2357 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
Arik Nemtsov2e8d3972012-06-03 23:31:56 +03002358 continue;
2359
2360 for (state = IEEE80211_STA_NOTEXIST;
2361 state < sta->sta_state; state++)
2362 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2363 state + 1));
2364 }
2365 mutex_unlock(&local->sta_mtx);
2366
Eyal Shapira7b21aea2012-05-29 02:00:22 -07002367 /* add back keys */
2368 list_for_each_entry(sdata, &local->interfaces, list)
Michal Kaziorf9dca802015-05-13 09:16:48 +00002369 ieee80211_reset_crypto_tx_tailroom(sdata);
2370
2371 list_for_each_entry(sdata, &local->interfaces, list)
Eyal Shapira7b21aea2012-05-29 02:00:22 -07002372 if (ieee80211_sdata_running(sdata))
2373 ieee80211_enable_keys(sdata);
2374
Eliad Peller0d440ea2015-10-25 10:59:33 +02002375 /* Reconfigure sched scan if it was interrupted by FW restart */
2376 mutex_lock(&local->mtx);
2377 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2378 lockdep_is_held(&local->mtx));
2379 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2380 lockdep_is_held(&local->mtx));
2381 if (sched_scan_sdata && sched_scan_req)
2382 /*
2383 * Sched scan stopped, but we don't want to report it. Instead,
2384 * we're trying to reschedule. However, if more than one scan
2385 * plan was set, we cannot reschedule since we don't know which
2386 * scan plan was currently running (and some scan plans may have
2387 * already finished).
2388 */
2389 if (sched_scan_req->n_scan_plans > 1 ||
2390 __ieee80211_request_sched_scan_start(sched_scan_sdata,
Eliad Pellerb9f628f2015-12-16 15:45:45 +02002391 sched_scan_req)) {
2392 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2393 RCU_INIT_POINTER(local->sched_scan_req, NULL);
Eliad Peller0d440ea2015-10-25 10:59:33 +02002394 sched_scan_stopped = true;
Eliad Pellerb9f628f2015-12-16 15:45:45 +02002395 }
Eliad Peller0d440ea2015-10-25 10:59:33 +02002396 mutex_unlock(&local->mtx);
2397
2398 if (sched_scan_stopped)
Arend Van Sprielb34939b2017-04-28 13:40:28 +01002399 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
Eliad Peller0d440ea2015-10-25 10:59:33 +02002400
Eliad Pellerc6209482012-07-02 15:08:25 +03002401 wake_up:
Arik Nemtsov04800ad2012-06-06 11:25:02 +03002402
Johannes Berg3c3e21e2013-03-27 23:20:27 +01002403 if (local->monitors == local->open_count && local->monitors > 0)
2404 ieee80211_add_virtual_monitor(local);
2405
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002406 /*
Johannes Berg2a419052010-06-10 10:21:29 +02002407 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2408 * sessions can be established after a resume.
2409 *
2410 * Also tear down aggregation sessions since reconfiguring
2411 * them in a hardware restart scenario is not easily done
2412 * right now, and the hardware will have lost information
2413 * about the sessions, but we and the AP still think they
2414 * are active. This is really a workaround though.
2415 */
Johannes Berg30686bf2015-06-02 21:39:54 +02002416 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
Johannes Berg2a419052010-06-10 10:21:29 +02002417 mutex_lock(&local->sta_mtx);
2418
2419 list_for_each_entry(sta, &local->sta_list, list) {
Eliad Peller27392712015-09-21 15:50:26 +03002420 if (!local->resuming)
2421 ieee80211_sta_tear_down_BA_sessions(
2422 sta, AGG_STOP_LOCAL_REQUEST);
Johannes Bergc2c98fd2011-09-29 16:04:36 +02002423 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
Wey-Yi Guy74e2bd12010-02-03 09:28:55 -08002424 }
Johannes Berg2a419052010-06-10 10:21:29 +02002425
2426 mutex_unlock(&local->sta_mtx);
Wey-Yi Guy74e2bd12010-02-03 09:28:55 -08002427 }
Wey-Yi Guy74e2bd12010-02-03 09:28:55 -08002428
Sara Sharon23163802017-10-29 11:51:08 +02002429 if (local->in_reconfig) {
2430 local->in_reconfig = false;
2431 barrier();
2432
2433 /* Restart deferred ROCs */
2434 mutex_lock(&local->mtx);
2435 ieee80211_start_next_roc(local);
2436 mutex_unlock(&local->mtx);
2437 }
2438
Johannes Berg445ea4e2013-02-13 12:25:28 +01002439 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +03002440 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2441 false);
Johannes Bergf2753dd2009-04-14 10:09:24 +02002442
Johannes Berg5bb644a2009-05-17 11:40:42 +02002443 /*
2444 * If this is for hw restart things are still running.
2445 * We may want to change that later, however.
2446 */
Eliad Pellerb0485e92015-07-08 15:41:47 +03002447 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
Eliad Pellercf2c92d2014-11-04 11:43:54 +02002448 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
Johannes Berg8f21b0a2013-01-11 00:28:01 +01002449
Eliad Pellerb0485e92015-07-08 15:41:47 +03002450 if (!suspended)
Johannes Berg5bb644a2009-05-17 11:40:42 +02002451 return 0;
2452
2453#ifdef CONFIG_PM
Johannes Bergceb99fe2009-11-19 14:29:39 +01002454 /* first set suspended false, then resuming */
Johannes Berg5bb644a2009-05-17 11:40:42 +02002455 local->suspended = false;
Johannes Bergceb99fe2009-11-19 14:29:39 +01002456 mb();
2457 local->resuming = false;
Johannes Berg5bb644a2009-05-17 11:40:42 +02002458
Johannes Berg74430f92015-12-08 16:04:38 +02002459 ieee80211_flush_completed_scan(local, false);
Luciano Coelho9120d94e2015-01-24 10:30:02 +02002460
Eliad Peller0f8b8242014-12-14 11:05:53 +02002461 if (local->open_count && !reconfig_due_to_wowlan)
Eliad Pellercf2c92d2014-11-04 11:43:54 +02002462 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2463
Johannes Bergb8360ab2013-04-29 14:57:44 +02002464 list_for_each_entry(sdata, &local->interfaces, list) {
2465 if (!ieee80211_sdata_running(sdata))
2466 continue;
2467 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2468 ieee80211_sta_restart(sdata);
2469 }
2470
Johannes Berg26d59532011-04-01 13:52:48 +02002471 mod_timer(&local->sta_cleanup, jiffies + 1);
Johannes Berg5bb644a2009-05-17 11:40:42 +02002472#else
2473 WARN_ON(1);
2474#endif
David Spinadeld43c6b62013-12-08 21:48:57 +02002475
Johannes Bergf2753dd2009-04-14 10:09:24 +02002476 return 0;
2477}
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04002478
Johannes Berg95acac62011-07-12 12:30:59 +02002479void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2480{
2481 struct ieee80211_sub_if_data *sdata;
2482 struct ieee80211_local *local;
2483 struct ieee80211_key *key;
2484
2485 if (WARN_ON(!vif))
2486 return;
2487
2488 sdata = vif_to_sdata(vif);
2489 local = sdata->local;
2490
2491 if (WARN_ON(!local->resuming))
2492 return;
2493
2494 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2495 return;
2496
2497 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2498
2499 mutex_lock(&local->key_mtx);
2500 list_for_each_entry(key, &sdata->key_list, list)
2501 key->flags |= KEY_FLAG_TAINTED;
2502 mutex_unlock(&local->key_mtx);
2503}
2504EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2505
Johannes Berg04ecd252012-09-11 14:34:12 +02002506void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
Johannes Berg0f782312009-12-01 13:37:02 +01002507{
Johannes Berg04ecd252012-09-11 14:34:12 +02002508 struct ieee80211_local *local = sdata->local;
2509 struct ieee80211_chanctx_conf *chanctx_conf;
2510 struct ieee80211_chanctx *chanctx;
Johannes Berg0f782312009-12-01 13:37:02 +01002511
Johannes Berg04ecd252012-09-11 14:34:12 +02002512 mutex_lock(&local->chanctx_mtx);
Johannes Berg0f782312009-12-01 13:37:02 +01002513
Johannes Berg04ecd252012-09-11 14:34:12 +02002514 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2515 lockdep_is_held(&local->chanctx_mtx));
Johannes Berg0f782312009-12-01 13:37:02 +01002516
Andrei Otcheretianskic189a682015-10-25 10:59:40 +02002517 /*
2518 * This function can be called from a work, thus it may be possible
2519 * that the chanctx_conf is removed (due to a disconnection, for
2520 * example).
2521 * So nothing should be done in such case.
2522 */
2523 if (!chanctx_conf)
Johannes Berg5d8e4232012-09-11 10:17:11 +02002524 goto unlock;
Johannes Berg0f782312009-12-01 13:37:02 +01002525
Johannes Berg04ecd252012-09-11 14:34:12 +02002526 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2527 ieee80211_recalc_smps_chanctx(local, chanctx);
Johannes Berg5d8e4232012-09-11 10:17:11 +02002528 unlock:
Johannes Berg04ecd252012-09-11 14:34:12 +02002529 mutex_unlock(&local->chanctx_mtx);
Johannes Berg0f782312009-12-01 13:37:02 +01002530}
Johannes Berg8e664fb2009-12-23 13:15:38 +01002531
Eliad Peller21f659b2013-11-11 20:14:01 +02002532void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2533{
2534 struct ieee80211_local *local = sdata->local;
2535 struct ieee80211_chanctx_conf *chanctx_conf;
2536 struct ieee80211_chanctx *chanctx;
2537
2538 mutex_lock(&local->chanctx_mtx);
2539
2540 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2541 lockdep_is_held(&local->chanctx_mtx));
2542
2543 if (WARN_ON_ONCE(!chanctx_conf))
2544 goto unlock;
2545
2546 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2547 ieee80211_recalc_chanctx_min_def(local, chanctx);
2548 unlock:
2549 mutex_unlock(&local->chanctx_mtx);
2550}
2551
Johannes Berg8e664fb2009-12-23 13:15:38 +01002552size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2553{
2554 size_t pos = offset;
2555
2556 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2557 pos += 2 + ies[pos + 1];
2558
2559 return pos;
2560}
Meenakshi Venkataraman615f7b92011-07-08 08:46:22 -07002561
2562static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2563 int rssi_min_thold,
2564 int rssi_max_thold)
2565{
2566 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2567
2568 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2569 return;
2570
2571 /*
2572 * Scale up threshold values before storing it, as the RSSI averaging
2573 * algorithm uses a scaled up value as well. Change this scaling
2574 * factor if the RSSI averaging algorithm changes.
2575 */
2576 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2577 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2578}
2579
2580void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2581 int rssi_min_thold,
2582 int rssi_max_thold)
2583{
2584 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2585
2586 WARN_ON(rssi_min_thold == rssi_max_thold ||
2587 rssi_min_thold > rssi_max_thold);
2588
2589 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2590 rssi_max_thold);
2591}
2592EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2593
2594void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2595{
2596 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2597
2598 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2599}
2600EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
Arik Nemtsov768db3432011-09-28 14:12:51 +03002601
Ben Greearef96a8422011-11-18 11:32:00 -08002602u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
Alexander Simon42e7aa72011-10-26 14:47:26 -07002603 u16 cap)
2604{
2605 __le16 tmp;
2606
2607 *pos++ = WLAN_EID_HT_CAPABILITY;
2608 *pos++ = sizeof(struct ieee80211_ht_cap);
2609 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2610
2611 /* capability flags */
2612 tmp = cpu_to_le16(cap);
2613 memcpy(pos, &tmp, sizeof(u16));
2614 pos += sizeof(u16);
2615
2616 /* AMPDU parameters */
Ben Greearef96a8422011-11-18 11:32:00 -08002617 *pos++ = ht_cap->ampdu_factor |
2618 (ht_cap->ampdu_density <<
Alexander Simon42e7aa72011-10-26 14:47:26 -07002619 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2620
2621 /* MCS set */
Ben Greearef96a8422011-11-18 11:32:00 -08002622 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2623 pos += sizeof(ht_cap->mcs);
Alexander Simon42e7aa72011-10-26 14:47:26 -07002624
2625 /* extended capabilities */
2626 pos += sizeof(__le16);
2627
2628 /* BF capabilities */
2629 pos += sizeof(__le32);
2630
2631 /* antenna selection */
2632 pos += sizeof(u8);
2633
2634 return pos;
2635}
2636
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00002637u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
Johannes Bergcc3983d2012-12-07 12:45:06 +01002638 u32 cap)
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00002639{
2640 __le32 tmp;
2641
2642 *pos++ = WLAN_EID_VHT_CAPABILITY;
Mahesh Palivelad4950282012-10-10 11:25:40 +00002643 *pos++ = sizeof(struct ieee80211_vht_cap);
2644 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00002645
2646 /* capability flags */
2647 tmp = cpu_to_le32(cap);
2648 memcpy(pos, &tmp, sizeof(u32));
2649 pos += sizeof(u32);
2650
2651 /* VHT MCS set */
2652 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2653 pos += sizeof(vht_cap->vht_mcs);
2654
2655 return pos;
2656}
2657
Luca Coelho41cbb0f2018-06-09 09:14:44 +03002658u8 *ieee80211_ie_build_he_cap(u8 *pos,
2659 const struct ieee80211_sta_he_cap *he_cap,
2660 u8 *end)
2661{
2662 u8 n;
2663 u8 ie_len;
2664 u8 *orig_pos = pos;
2665
2666 /* Make sure we have place for the IE */
2667 /*
2668 * TODO: the 1 added is because this temporarily is under the EXTENSION
2669 * IE. Get rid of it when it moves.
2670 */
2671 if (!he_cap)
2672 return orig_pos;
2673
2674 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2675 ie_len = 2 + 1 +
2676 sizeof(he_cap->he_cap_elem) + n +
2677 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2678 he_cap->he_cap_elem.phy_cap_info);
2679
2680 if ((end - pos) < ie_len)
2681 return orig_pos;
2682
2683 *pos++ = WLAN_EID_EXTENSION;
2684 pos++; /* We'll set the size later below */
2685 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2686
2687 /* Fixed data */
2688 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2689 pos += sizeof(he_cap->he_cap_elem);
2690
2691 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2692 pos += n;
2693
2694 /* Check if PPE Threshold should be present */
2695 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2696 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2697 goto end;
2698
2699 /*
2700 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2701 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2702 */
2703 n = hweight8(he_cap->ppe_thres[0] &
2704 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2705 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2706 IEEE80211_PPE_THRES_NSS_POS));
2707
2708 /*
2709 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2710 * total size.
2711 */
2712 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2713 n = DIV_ROUND_UP(n, 8);
2714
2715 /* Copy PPE Thresholds */
2716 memcpy(pos, &he_cap->ppe_thres, n);
2717 pos += n;
2718
2719end:
2720 orig_pos[1] = (pos - orig_pos) - 2;
2721 return pos;
2722}
2723
Johannes Berg074d46d2012-03-15 19:45:16 +01002724u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
Johannes Berg4bf88532012-11-09 11:39:59 +01002725 const struct cfg80211_chan_def *chandef,
Arik Nemtsov57f255f2015-10-25 10:59:34 +02002726 u16 prot_mode, bool rifs_mode)
Alexander Simon42e7aa72011-10-26 14:47:26 -07002727{
Johannes Berg074d46d2012-03-15 19:45:16 +01002728 struct ieee80211_ht_operation *ht_oper;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002729 /* Build HT Information */
Johannes Berg074d46d2012-03-15 19:45:16 +01002730 *pos++ = WLAN_EID_HT_OPERATION;
2731 *pos++ = sizeof(struct ieee80211_ht_operation);
2732 ht_oper = (struct ieee80211_ht_operation *)pos;
Johannes Berg4bf88532012-11-09 11:39:59 +01002733 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2734 chandef->chan->center_freq);
2735 switch (chandef->width) {
2736 case NL80211_CHAN_WIDTH_160:
2737 case NL80211_CHAN_WIDTH_80P80:
2738 case NL80211_CHAN_WIDTH_80:
2739 case NL80211_CHAN_WIDTH_40:
2740 if (chandef->center_freq1 > chandef->chan->center_freq)
2741 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2742 else
2743 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002744 break;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002745 default:
Johannes Berg074d46d2012-03-15 19:45:16 +01002746 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002747 break;
2748 }
Thomas Pedersenaee286c2012-04-18 19:24:14 -07002749 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
Johannes Berg4bf88532012-11-09 11:39:59 +01002750 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2751 chandef->width != NL80211_CHAN_WIDTH_20)
Johannes Berg074d46d2012-03-15 19:45:16 +01002752 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
Simon Wunderlichff3cc5f2011-11-30 16:56:33 +01002753
Arik Nemtsov57f255f2015-10-25 10:59:34 +02002754 if (rifs_mode)
2755 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2756
Ashok Nagarajan431e3152012-04-30 14:20:29 -07002757 ht_oper->operation_mode = cpu_to_le16(prot_mode);
Johannes Berg074d46d2012-03-15 19:45:16 +01002758 ht_oper->stbc_param = 0x0000;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002759
2760 /* It seems that Basic MCS set and Supported MCS set
2761 are identical for the first 10 bytes */
Johannes Berg074d46d2012-03-15 19:45:16 +01002762 memset(&ht_oper->basic_set, 0, 16);
2763 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
Alexander Simon42e7aa72011-10-26 14:47:26 -07002764
Johannes Berg074d46d2012-03-15 19:45:16 +01002765 return pos + sizeof(struct ieee80211_ht_operation);
Alexander Simon42e7aa72011-10-26 14:47:26 -07002766}
2767
Simon Wunderlich75d627d2017-05-23 17:00:42 +02002768void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2769 const struct cfg80211_chan_def *chandef)
2770{
2771 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2772 *pos++ = 3; /* IE length */
2773 /* New channel width */
2774 switch (chandef->width) {
2775 case NL80211_CHAN_WIDTH_80:
2776 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2777 break;
2778 case NL80211_CHAN_WIDTH_160:
2779 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2780 break;
2781 case NL80211_CHAN_WIDTH_80P80:
2782 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2783 break;
2784 default:
2785 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2786 }
2787
2788 /* new center frequency segment 0 */
2789 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2790 /* new center frequency segment 1 */
2791 if (chandef->center_freq2)
2792 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2793 else
2794 *pos++ = 0;
2795}
2796
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002797u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2798 const struct cfg80211_chan_def *chandef)
2799{
2800 struct ieee80211_vht_operation *vht_oper;
2801
2802 *pos++ = WLAN_EID_VHT_OPERATION;
2803 *pos++ = sizeof(struct ieee80211_vht_operation);
2804 vht_oper = (struct ieee80211_vht_operation *)pos;
Johannes Berg2fb51c32017-02-15 15:02:06 +01002805 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002806 chandef->center_freq1);
2807 if (chandef->center_freq2)
Johannes Berg2fb51c32017-02-15 15:02:06 +01002808 vht_oper->center_freq_seg1_idx =
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002809 ieee80211_frequency_to_channel(chandef->center_freq2);
Chun-Yeow Yeohf020ae42015-09-04 10:58:05 +08002810 else
Johannes Berg2fb51c32017-02-15 15:02:06 +01002811 vht_oper->center_freq_seg1_idx = 0x00;
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002812
2813 switch (chandef->width) {
2814 case NL80211_CHAN_WIDTH_160:
Jouni Malinen23665aa2016-02-01 11:40:55 +02002815 /*
2816 * Convert 160 MHz channel width to new style as interop
2817 * workaround.
2818 */
2819 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
Johannes Berg2fb51c32017-02-15 15:02:06 +01002820 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002821 if (chandef->chan->center_freq < chandef->center_freq1)
Johannes Berg2fb51c32017-02-15 15:02:06 +01002822 vht_oper->center_freq_seg0_idx -= 8;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002823 else
Johannes Berg2fb51c32017-02-15 15:02:06 +01002824 vht_oper->center_freq_seg0_idx += 8;
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002825 break;
2826 case NL80211_CHAN_WIDTH_80P80:
Jouni Malinen23665aa2016-02-01 11:40:55 +02002827 /*
2828 * Convert 80+80 MHz channel width to new style as interop
2829 * workaround.
2830 */
2831 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002832 break;
2833 case NL80211_CHAN_WIDTH_80:
2834 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2835 break;
2836 default:
2837 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2838 break;
2839 }
2840
2841 /* don't require special VHT peer rates */
2842 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2843
2844 return pos + sizeof(struct ieee80211_vht_operation);
2845}
2846
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002847bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2848 struct cfg80211_chan_def *chandef)
Alexander Simon42e7aa72011-10-26 14:47:26 -07002849{
2850 enum nl80211_channel_type channel_type;
2851
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002852 if (!ht_oper)
2853 return false;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002854
Johannes Berg074d46d2012-03-15 19:45:16 +01002855 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
Alexander Simon42e7aa72011-10-26 14:47:26 -07002856 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2857 channel_type = NL80211_CHAN_HT20;
2858 break;
2859 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2860 channel_type = NL80211_CHAN_HT40PLUS;
2861 break;
2862 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2863 channel_type = NL80211_CHAN_HT40MINUS;
2864 break;
2865 default:
2866 channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002867 return false;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002868 }
2869
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002870 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2871 return true;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002872}
2873
Johannes Berg7eb26df2018-08-31 11:31:18 +03002874bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
2875 const struct ieee80211_vht_operation *oper,
2876 const struct ieee80211_ht_operation *htop,
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002877 struct cfg80211_chan_def *chandef)
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002878{
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002879 struct cfg80211_chan_def new = *chandef;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002880 int cf0, cf1;
2881 int ccfs0, ccfs1, ccfs2;
2882 int ccf0, ccf1;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002883
Johannes Berg7eb26df2018-08-31 11:31:18 +03002884 if (!oper || !htop)
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002885 return false;
2886
Johannes Berg7eb26df2018-08-31 11:31:18 +03002887 ccfs0 = oper->center_freq_seg0_idx;
2888 ccfs1 = oper->center_freq_seg1_idx;
2889 ccfs2 = (le16_to_cpu(htop->operation_mode) &
2890 IEEE80211_HT_OP_MODE_CCFS2_MASK)
2891 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
2892
2893 /* when parsing (and we know how to) CCFS1 and CCFS2 are equivalent */
2894 ccf0 = ccfs0;
2895 ccf1 = ccfs1;
2896 if (!ccfs1 && ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
2897 ccf1 = ccfs2;
2898
2899 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
2900 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002901
2902 switch (oper->chan_width) {
2903 case IEEE80211_VHT_CHANWIDTH_USE_HT:
Johannes Berg7eb26df2018-08-31 11:31:18 +03002904 /* just use HT information directly */
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002905 break;
2906 case IEEE80211_VHT_CHANWIDTH_80MHZ:
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002907 new.width = NL80211_CHAN_WIDTH_80;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002908 new.center_freq1 = cf0;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002909 /* If needed, adjust based on the newer interop workaround. */
Johannes Berg7eb26df2018-08-31 11:31:18 +03002910 if (ccf1) {
Jouni Malinen23665aa2016-02-01 11:40:55 +02002911 unsigned int diff;
2912
Johannes Berg7eb26df2018-08-31 11:31:18 +03002913 diff = abs(ccf1 - ccf0);
Jouni Malinen23665aa2016-02-01 11:40:55 +02002914 if (diff == 8) {
2915 new.width = NL80211_CHAN_WIDTH_160;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002916 new.center_freq1 = cf1;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002917 } else if (diff > 8) {
2918 new.width = NL80211_CHAN_WIDTH_80P80;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002919 new.center_freq2 = cf1;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002920 }
2921 }
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002922 break;
2923 case IEEE80211_VHT_CHANWIDTH_160MHZ:
Johannes Berg7eb26df2018-08-31 11:31:18 +03002924 /* deprecated encoding */
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002925 new.width = NL80211_CHAN_WIDTH_160;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002926 new.center_freq1 = cf0;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002927 break;
2928 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
Johannes Berg7eb26df2018-08-31 11:31:18 +03002929 /* deprecated encoding */
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002930 new.width = NL80211_CHAN_WIDTH_80P80;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002931 new.center_freq1 = cf0;
2932 new.center_freq2 = cf1;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002933 break;
2934 default:
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002935 return false;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002936 }
2937
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002938 if (!cfg80211_chandef_valid(&new))
2939 return false;
2940
2941 *chandef = new;
2942 return true;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002943}
2944
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002945int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2946 const struct ieee80211_supported_band *sband,
2947 const u8 *srates, int srates_len, u32 *rates)
2948{
2949 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2950 int shift = ieee80211_chandef_get_shift(chandef);
2951 struct ieee80211_rate *br;
2952 int brate, rate, i, j, count = 0;
2953
2954 *rates = 0;
2955
2956 for (i = 0; i < srates_len; i++) {
2957 rate = srates[i] & 0x7f;
2958
2959 for (j = 0; j < sband->n_bitrates; j++) {
2960 br = &sband->bitrates[j];
2961 if ((rate_flags & br->flags) != rate_flags)
2962 continue;
2963
2964 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2965 if (brate == rate) {
2966 *rates |= BIT(j);
2967 count++;
2968 break;
2969 }
2970 }
2971 }
2972 return count;
2973}
2974
Johannes Bergfc8a7322012-06-28 10:33:25 +02002975int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
Johannes Berg6b778632012-07-23 14:53:27 +02002976 struct sk_buff *skb, bool need_basic,
Johannes Berg57fbcce2016-04-12 15:56:15 +02002977 enum nl80211_band band)
Arik Nemtsov768db3432011-09-28 14:12:51 +03002978{
Arik Nemtsov768db3432011-09-28 14:12:51 +03002979 struct ieee80211_local *local = sdata->local;
2980 struct ieee80211_supported_band *sband;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002981 int rate, shift;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002982 u8 i, rates, *pos;
Johannes Bergfc8a7322012-06-28 10:33:25 +02002983 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002984 u32 rate_flags;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002985
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002986 shift = ieee80211_vif_get_shift(&sdata->vif);
2987 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
Johannes Berg6b778632012-07-23 14:53:27 +02002988 sband = local->hw.wiphy->bands[band];
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002989 rates = 0;
2990 for (i = 0; i < sband->n_bitrates; i++) {
2991 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2992 continue;
2993 rates++;
2994 }
Arik Nemtsov768db3432011-09-28 14:12:51 +03002995 if (rates > 8)
2996 rates = 8;
2997
2998 if (skb_tailroom(skb) < rates + 2)
2999 return -ENOMEM;
3000
3001 pos = skb_put(skb, rates + 2);
3002 *pos++ = WLAN_EID_SUPP_RATES;
3003 *pos++ = rates;
3004 for (i = 0; i < rates; i++) {
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07003005 u8 basic = 0;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003006 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3007 continue;
3008
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07003009 if (need_basic && basic_rates & BIT(i))
3010 basic = 0x80;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003011 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3012 5 * (1 << shift));
3013 *pos++ = basic | (u8) rate;
Arik Nemtsov768db3432011-09-28 14:12:51 +03003014 }
3015
3016 return 0;
3017}
3018
Johannes Bergfc8a7322012-06-28 10:33:25 +02003019int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
Johannes Berg6b778632012-07-23 14:53:27 +02003020 struct sk_buff *skb, bool need_basic,
Johannes Berg57fbcce2016-04-12 15:56:15 +02003021 enum nl80211_band band)
Arik Nemtsov768db3432011-09-28 14:12:51 +03003022{
Arik Nemtsov768db3432011-09-28 14:12:51 +03003023 struct ieee80211_local *local = sdata->local;
3024 struct ieee80211_supported_band *sband;
Chun-Yeow Yeohcc63ec72013-09-07 23:40:44 -07003025 int rate, shift;
Arik Nemtsov768db3432011-09-28 14:12:51 +03003026 u8 i, exrates, *pos;
Johannes Bergfc8a7322012-06-28 10:33:25 +02003027 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003028 u32 rate_flags;
3029
3030 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3031 shift = ieee80211_vif_get_shift(&sdata->vif);
Arik Nemtsov768db3432011-09-28 14:12:51 +03003032
Johannes Berg6b778632012-07-23 14:53:27 +02003033 sband = local->hw.wiphy->bands[band];
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003034 exrates = 0;
3035 for (i = 0; i < sband->n_bitrates; i++) {
3036 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3037 continue;
3038 exrates++;
3039 }
3040
Arik Nemtsov768db3432011-09-28 14:12:51 +03003041 if (exrates > 8)
3042 exrates -= 8;
3043 else
3044 exrates = 0;
3045
3046 if (skb_tailroom(skb) < exrates + 2)
3047 return -ENOMEM;
3048
3049 if (exrates) {
3050 pos = skb_put(skb, exrates + 2);
3051 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3052 *pos++ = exrates;
3053 for (i = 8; i < sband->n_bitrates; i++) {
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07003054 u8 basic = 0;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003055 if ((rate_flags & sband->bitrates[i].flags)
3056 != rate_flags)
3057 continue;
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07003058 if (need_basic && basic_rates & BIT(i))
3059 basic = 0x80;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003060 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3061 5 * (1 << shift));
3062 *pos++ = basic | (u8) rate;
Arik Nemtsov768db3432011-09-28 14:12:51 +03003063 }
3064 }
3065 return 0;
3066}
Wey-Yi Guy1dae27f2012-04-13 12:02:57 -07003067
3068int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3069{
3070 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3071 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3072
Wey-Yi Guybe6bcab2012-04-23 09:30:32 -07003073 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3074 /* non-managed type inferfaces */
3075 return 0;
3076 }
Johannes Berg338c17a2015-08-28 10:52:54 +02003077 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
Wey-Yi Guy1dae27f2012-04-13 12:02:57 -07003078}
Wey-Yi Guy0d8a0a12012-04-20 11:57:00 -07003079EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
Johannes Berg04ecd252012-09-11 14:34:12 +02003080
3081u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3082{
3083 if (!mcs)
3084 return 1;
3085
3086 /* TODO: consider rx_highest */
3087
3088 if (mcs->rx_mask[3])
3089 return 4;
3090 if (mcs->rx_mask[2])
3091 return 3;
3092 if (mcs->rx_mask[1])
3093 return 2;
3094 return 1;
3095}
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003096
3097/**
3098 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3099 * @local: mac80211 hw info struct
3100 * @status: RX status
3101 * @mpdu_len: total MPDU length (including FCS)
3102 * @mpdu_offset: offset into MPDU to calculate timestamp at
3103 *
3104 * This function calculates the RX timestamp at the given MPDU offset, taking
3105 * into account what the RX timestamp was. An offset of 0 will just normalize
3106 * the timestamp to TSF at beginning of MPDU reception.
3107 */
3108u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3109 struct ieee80211_rx_status *status,
3110 unsigned int mpdu_len,
3111 unsigned int mpdu_offset)
3112{
3113 u64 ts = status->mactime;
3114 struct rate_info ri;
3115 u16 rate;
3116
3117 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3118 return 0;
3119
3120 memset(&ri, 0, sizeof(ri));
3121
Johannes Berg35f49622018-04-20 13:49:21 +03003122 ri.bw = status->bw;
3123
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003124 /* Fill cfg80211 rate info */
Johannes Bergda6a4352017-04-26 12:14:59 +02003125 switch (status->encoding) {
3126 case RX_ENC_HT:
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003127 ri.mcs = status->rate_idx;
3128 ri.flags |= RATE_INFO_FLAGS_MCS;
Johannes Berg7fdd69c2017-04-26 11:13:00 +02003129 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003130 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
Johannes Bergda6a4352017-04-26 12:14:59 +02003131 break;
3132 case RX_ENC_VHT:
Johannes Berg56146182012-11-09 15:07:02 +01003133 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3134 ri.mcs = status->rate_idx;
Johannes Berg8613c942017-04-26 13:51:41 +02003135 ri.nss = status->nss;
Johannes Berg7fdd69c2017-04-26 11:13:00 +02003136 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
Johannes Berg56146182012-11-09 15:07:02 +01003137 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
Johannes Bergda6a4352017-04-26 12:14:59 +02003138 break;
3139 default:
3140 WARN_ON(1);
3141 /* fall through */
3142 case RX_ENC_LEGACY: {
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003143 struct ieee80211_supported_band *sband;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003144 int shift = 0;
3145 int bitrate;
3146
Johannes Bergda6a4352017-04-26 12:14:59 +02003147 switch (status->bw) {
3148 case RATE_INFO_BW_10:
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003149 shift = 1;
Johannes Bergda6a4352017-04-26 12:14:59 +02003150 break;
3151 case RATE_INFO_BW_5:
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003152 shift = 2;
Johannes Bergda6a4352017-04-26 12:14:59 +02003153 break;
Johannes Bergb51f3be2015-01-15 16:14:02 +01003154 }
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003155
3156 sband = local->hw.wiphy->bands[status->band];
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003157 bitrate = sband->bitrates[status->rate_idx].bitrate;
3158 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
Johannes Bergf4a0f0c2016-01-25 15:46:34 +02003159
3160 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3161 /* TODO: handle HT/VHT preambles */
Johannes Berg57fbcce2016-04-12 15:56:15 +02003162 if (status->band == NL80211_BAND_5GHZ) {
Johannes Bergf4a0f0c2016-01-25 15:46:34 +02003163 ts += 20 << shift;
3164 mpdu_offset += 2;
Johannes Berg7fdd69c2017-04-26 11:13:00 +02003165 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
Johannes Bergf4a0f0c2016-01-25 15:46:34 +02003166 ts += 96;
3167 } else {
3168 ts += 192;
3169 }
3170 }
Johannes Bergda6a4352017-04-26 12:14:59 +02003171 break;
3172 }
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003173 }
3174
3175 rate = cfg80211_calculate_bitrate(&ri);
Johannes Bergd86aa4f2013-10-11 15:47:06 +02003176 if (WARN_ONCE(!rate,
Sara Sharonf980ebc2016-02-24 11:49:45 +02003177 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3178 (unsigned long long)status->flag, status->rate_idx,
Johannes Berg8613c942017-04-26 13:51:41 +02003179 status->nss))
Johannes Bergd86aa4f2013-10-11 15:47:06 +02003180 return 0;
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003181
3182 /* rewind from end of MPDU */
3183 if (status->flag & RX_FLAG_MACTIME_END)
3184 ts -= mpdu_len * 8 * 10 / rate;
3185
3186 ts += mpdu_offset * 8 * 10 / rate;
3187
3188 return ts;
3189}
Simon Wunderlich164eb022013-02-08 18:16:20 +01003190
3191void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3192{
3193 struct ieee80211_sub_if_data *sdata;
Janusz Dziedzicd2859df2013-11-06 13:55:51 +01003194 struct cfg80211_chan_def chandef;
Simon Wunderlich164eb022013-02-08 18:16:20 +01003195
Johannes Berg4a199062017-04-26 10:58:53 +03003196 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3197 ASSERT_RTNL();
3198
Johannes Berg34a37402013-12-18 09:43:33 +01003199 mutex_lock(&local->mtx);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003200 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Berg34a37402013-12-18 09:43:33 +01003201 /* it might be waiting for the local->mtx, but then
3202 * by the time it gets it, sdata->wdev.cac_started
3203 * will no longer be true
3204 */
3205 cancel_delayed_work(&sdata->dfs_cac_timer_work);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003206
3207 if (sdata->wdev.cac_started) {
Janusz Dziedzicd2859df2013-11-06 13:55:51 +01003208 chandef = sdata->vif.bss_conf.chandef;
Simon Wunderlich164eb022013-02-08 18:16:20 +01003209 ieee80211_vif_release_channel(sdata);
3210 cfg80211_cac_event(sdata->dev,
Janusz Dziedzicd2859df2013-11-06 13:55:51 +01003211 &chandef,
Simon Wunderlich164eb022013-02-08 18:16:20 +01003212 NL80211_RADAR_CAC_ABORTED,
3213 GFP_KERNEL);
3214 }
3215 }
Johannes Berg34a37402013-12-18 09:43:33 +01003216 mutex_unlock(&local->mtx);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003217}
3218
3219void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3220{
3221 struct ieee80211_local *local =
3222 container_of(work, struct ieee80211_local, radar_detected_work);
Janusz Dziedzic84a3d1c2013-11-05 14:48:46 +01003223 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
Michal Kazior486cf4c2014-10-10 12:43:23 +02003224 struct ieee80211_chanctx *ctx;
3225 int num_chanctx = 0;
3226
3227 mutex_lock(&local->chanctx_mtx);
3228 list_for_each_entry(ctx, &local->chanctx_list, list) {
3229 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3230 continue;
3231
3232 num_chanctx++;
3233 chandef = ctx->conf.def;
3234 }
3235 mutex_unlock(&local->chanctx_mtx);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003236
Johannes Berg4a199062017-04-26 10:58:53 +03003237 rtnl_lock();
Simon Wunderlich164eb022013-02-08 18:16:20 +01003238 ieee80211_dfs_cac_cancel(local);
Johannes Berg4a199062017-04-26 10:58:53 +03003239 rtnl_unlock();
Simon Wunderlich164eb022013-02-08 18:16:20 +01003240
Michal Kazior486cf4c2014-10-10 12:43:23 +02003241 if (num_chanctx > 1)
3242 /* XXX: multi-channel is not supported yet */
Simon Wunderlich164eb022013-02-08 18:16:20 +01003243 WARN_ON(1);
Janusz Dziedzic84a3d1c2013-11-05 14:48:46 +01003244 else
Simon Wunderlich164eb022013-02-08 18:16:20 +01003245 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003246}
3247
3248void ieee80211_radar_detected(struct ieee80211_hw *hw)
3249{
3250 struct ieee80211_local *local = hw_to_local(hw);
3251
3252 trace_api_radar_detected(local);
3253
Johannes Berg4a199062017-04-26 10:58:53 +03003254 schedule_work(&local->radar_detected_work);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003255}
3256EXPORT_SYMBOL(ieee80211_radar_detected);
Simon Wunderliche6b7cde2013-08-28 13:41:29 +02003257
3258u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3259{
3260 u32 ret;
3261 int tmp;
3262
3263 switch (c->width) {
3264 case NL80211_CHAN_WIDTH_20:
3265 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3266 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3267 break;
3268 case NL80211_CHAN_WIDTH_40:
3269 c->width = NL80211_CHAN_WIDTH_20;
3270 c->center_freq1 = c->chan->center_freq;
3271 ret = IEEE80211_STA_DISABLE_40MHZ |
3272 IEEE80211_STA_DISABLE_VHT;
3273 break;
3274 case NL80211_CHAN_WIDTH_80:
3275 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3276 /* n_P40 */
3277 tmp /= 2;
3278 /* freq_P40 */
3279 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3280 c->width = NL80211_CHAN_WIDTH_40;
3281 ret = IEEE80211_STA_DISABLE_VHT;
3282 break;
3283 case NL80211_CHAN_WIDTH_80P80:
3284 c->center_freq2 = 0;
3285 c->width = NL80211_CHAN_WIDTH_80;
3286 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3287 IEEE80211_STA_DISABLE_160MHZ;
3288 break;
3289 case NL80211_CHAN_WIDTH_160:
3290 /* n_P20 */
3291 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3292 /* n_P80 */
3293 tmp /= 4;
3294 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3295 c->width = NL80211_CHAN_WIDTH_80;
3296 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3297 IEEE80211_STA_DISABLE_160MHZ;
3298 break;
3299 default:
3300 case NL80211_CHAN_WIDTH_20_NOHT:
3301 WARN_ON_ONCE(1);
3302 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3303 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3304 break;
3305 case NL80211_CHAN_WIDTH_5:
3306 case NL80211_CHAN_WIDTH_10:
3307 WARN_ON_ONCE(1);
3308 /* keep c->width */
3309 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3310 break;
3311 }
3312
3313 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3314
3315 return ret;
3316}
Emmanuel Grumbach687da132013-10-01 16:45:43 +03003317
3318/*
3319 * Returns true if smps_mode_new is strictly more restrictive than
3320 * smps_mode_old.
3321 */
3322bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3323 enum ieee80211_smps_mode smps_mode_new)
3324{
3325 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3326 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3327 return false;
3328
3329 switch (smps_mode_old) {
3330 case IEEE80211_SMPS_STATIC:
3331 return false;
3332 case IEEE80211_SMPS_DYNAMIC:
3333 return smps_mode_new == IEEE80211_SMPS_STATIC;
3334 case IEEE80211_SMPS_OFF:
3335 return smps_mode_new != IEEE80211_SMPS_OFF;
3336 default:
3337 WARN_ON(1);
3338 }
3339
3340 return false;
3341}
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003342
3343int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3344 struct cfg80211_csa_settings *csa_settings)
3345{
3346 struct sk_buff *skb;
3347 struct ieee80211_mgmt *mgmt;
3348 struct ieee80211_local *local = sdata->local;
3349 int freq;
Johannes Berg4c121fd62017-09-08 11:54:46 +02003350 int hdr_len = offsetofend(struct ieee80211_mgmt,
3351 u.action.u.chan_switch);
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003352 u8 *pos;
3353
3354 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3355 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3356 return -EOPNOTSUPP;
3357
3358 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3359 5 + /* channel switch announcement element */
3360 3 + /* secondary channel offset element */
Simon Wunderlich75d627d2017-05-23 17:00:42 +02003361 5 + /* wide bandwidth channel switch announcement */
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003362 8); /* mesh channel switch parameters element */
3363 if (!skb)
3364 return -ENOMEM;
3365
3366 skb_reserve(skb, local->tx_headroom);
Johannes Bergb080db52017-06-16 14:29:19 +02003367 mgmt = skb_put_zero(skb, hdr_len);
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003368 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3369 IEEE80211_STYPE_ACTION);
3370
3371 eth_broadcast_addr(mgmt->da);
3372 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3373 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3374 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3375 } else {
3376 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3377 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3378 }
3379 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3380 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3381 pos = skb_put(skb, 5);
3382 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3383 *pos++ = 3; /* IE length */
3384 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3385 freq = csa_settings->chandef.chan->center_freq;
3386 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3387 *pos++ = csa_settings->count; /* count */
3388
3389 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3390 enum nl80211_channel_type ch_type;
3391
3392 skb_put(skb, 3);
3393 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3394 *pos++ = 1; /* IE length */
3395 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3396 if (ch_type == NL80211_CHAN_HT40PLUS)
3397 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3398 else
3399 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3400 }
3401
3402 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3403 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003404
3405 skb_put(skb, 8);
3406 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3407 *pos++ = 6; /* IE length */
3408 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3409 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3410 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3411 *pos++ |= csa_settings->block_tx ?
3412 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3413 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3414 pos += 2;
Chun-Yeow Yeohca91dc92013-11-12 10:31:48 +08003415 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003416 pos += 2;
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003417 }
3418
Simon Wunderlich75d627d2017-05-23 17:00:42 +02003419 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3420 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3421 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3422 skb_put(skb, 5);
3423 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3424 }
3425
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003426 ieee80211_tx_skb(sdata, skb);
3427 return 0;
3428}
Max Stepanov2475b1cc2013-03-24 14:23:27 +02003429
3430bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3431{
3432 return !(cs == NULL || cs->cipher == 0 ||
3433 cs->hdr_len < cs->pn_len + cs->pn_off ||
3434 cs->hdr_len <= cs->key_idx_off ||
3435 cs->key_idx_shift > 7 ||
3436 cs->key_idx_mask == 0);
3437}
3438
3439bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3440{
3441 int i;
3442
3443 /* Ensure we have enough iftype bitmap space for all iftype values */
3444 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3445
3446 for (i = 0; i < n; i++)
3447 if (!ieee80211_cs_valid(&cs[i]))
3448 return false;
3449
3450 return true;
3451}
3452
3453const struct ieee80211_cipher_scheme *
3454ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3455 enum nl80211_iftype iftype)
3456{
3457 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3458 int n = local->hw.n_cipher_schemes;
3459 int i;
3460 const struct ieee80211_cipher_scheme *cs = NULL;
3461
3462 for (i = 0; i < n; i++) {
3463 if (l[i].cipher == cipher) {
3464 cs = &l[i];
3465 break;
3466 }
3467 }
3468
3469 if (!cs || !(cs->iftype & BIT(iftype)))
3470 return NULL;
3471
3472 return cs;
3473}
3474
3475int ieee80211_cs_headroom(struct ieee80211_local *local,
3476 struct cfg80211_crypto_settings *crypto,
3477 enum nl80211_iftype iftype)
3478{
3479 const struct ieee80211_cipher_scheme *cs;
3480 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3481 int i;
3482
3483 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3484 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3485 iftype);
3486
3487 if (cs && headroom < cs->hdr_len)
3488 headroom = cs->hdr_len;
3489 }
3490
3491 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3492 if (cs && headroom < cs->hdr_len)
3493 headroom = cs->hdr_len;
3494
3495 return headroom;
3496}
Felix Fietkaua7022e62013-12-16 21:49:14 +01003497
3498static bool
3499ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3500{
3501 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3502 int skip;
3503
3504 if (end > 0)
3505 return false;
3506
Janusz.Dziedzic@tieto.com519ee692015-10-27 08:35:11 +01003507 /* One shot NOA */
3508 if (data->count[i] == 1)
3509 return false;
3510
3511 if (data->desc[i].interval == 0)
3512 return false;
3513
Felix Fietkaua7022e62013-12-16 21:49:14 +01003514 /* End time is in the past, check for repetitions */
3515 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3516 if (data->count[i] < 255) {
3517 if (data->count[i] <= skip) {
3518 data->count[i] = 0;
3519 return false;
3520 }
3521
3522 data->count[i] -= skip;
3523 }
3524
3525 data->desc[i].start += skip * data->desc[i].interval;
3526
3527 return true;
3528}
3529
3530static bool
3531ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3532 s32 *offset)
3533{
3534 bool ret = false;
3535 int i;
3536
3537 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3538 s32 cur;
3539
3540 if (!data->count[i])
3541 continue;
3542
3543 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3544 ret = true;
3545
3546 cur = data->desc[i].start - tsf;
3547 if (cur > *offset)
3548 continue;
3549
3550 cur = data->desc[i].start + data->desc[i].duration - tsf;
3551 if (cur > *offset)
3552 *offset = cur;
3553 }
3554
3555 return ret;
3556}
3557
3558static u32
3559ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3560{
3561 s32 offset = 0;
3562 int tries = 0;
3563 /*
3564 * arbitrary limit, used to avoid infinite loops when combined NoA
3565 * descriptors cover the full time period.
3566 */
3567 int max_tries = 5;
3568
3569 ieee80211_extend_absent_time(data, tsf, &offset);
3570 do {
3571 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3572 break;
3573
3574 tries++;
3575 } while (tries < max_tries);
3576
3577 return offset;
3578}
3579
3580void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3581{
3582 u32 next_offset = BIT(31) - 1;
3583 int i;
3584
3585 data->absent = 0;
3586 data->has_next_tsf = false;
3587 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3588 s32 start;
3589
3590 if (!data->count[i])
3591 continue;
3592
3593 ieee80211_extend_noa_desc(data, tsf, i);
3594 start = data->desc[i].start - tsf;
3595 if (start <= 0)
3596 data->absent |= BIT(i);
3597
3598 if (next_offset > start)
3599 next_offset = start;
3600
3601 data->has_next_tsf = true;
3602 }
3603
3604 if (data->absent)
3605 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3606
3607 data->next_tsf = tsf + next_offset;
3608}
3609EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3610
3611int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3612 struct ieee80211_noa_data *data, u32 tsf)
3613{
3614 int ret = 0;
3615 int i;
3616
3617 memset(data, 0, sizeof(*data));
3618
3619 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3620 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3621
3622 if (!desc->count || !desc->duration)
3623 continue;
3624
3625 data->count[i] = desc->count;
3626 data->desc[i].start = le32_to_cpu(desc->start_time);
3627 data->desc[i].duration = le32_to_cpu(desc->duration);
3628 data->desc[i].interval = le32_to_cpu(desc->interval);
3629
3630 if (data->count[i] > 1 &&
3631 data->desc[i].interval < data->desc[i].duration)
3632 continue;
3633
3634 ieee80211_extend_noa_desc(data, tsf, i);
3635 ret++;
3636 }
3637
3638 if (ret)
3639 ieee80211_update_p2p_noa(data, tsf);
3640
3641 return ret;
3642}
3643EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
Thomas Pedersen057d5f42013-12-19 10:25:15 -08003644
3645void ieee80211_recalc_dtim(struct ieee80211_local *local,
3646 struct ieee80211_sub_if_data *sdata)
3647{
3648 u64 tsf = drv_get_tsf(local, sdata);
3649 u64 dtim_count = 0;
3650 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3651 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3652 struct ps_data *ps;
3653 u8 bcns_from_dtim;
3654
3655 if (tsf == -1ULL || !beacon_int || !dtim_period)
3656 return;
3657
3658 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3659 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3660 if (!sdata->bss)
3661 return;
3662
3663 ps = &sdata->bss->ps;
3664 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3665 ps = &sdata->u.mesh.ps;
3666 } else {
3667 return;
3668 }
3669
3670 /*
3671 * actually finds last dtim_count, mac80211 will update in
3672 * __beacon_add_tim().
3673 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3674 */
3675 do_div(tsf, beacon_int);
3676 bcns_from_dtim = do_div(tsf, dtim_period);
3677 /* just had a DTIM */
3678 if (!bcns_from_dtim)
3679 dtim_count = 0;
3680 else
3681 dtim_count = dtim_period - bcns_from_dtim;
3682
3683 ps->dtim_count = dtim_count;
3684}
Luciano Coelho73de86a2014-02-13 11:31:59 +02003685
Michal Kazior71e61952014-06-25 12:35:07 +02003686static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3687 struct ieee80211_chanctx *ctx)
3688{
3689 struct ieee80211_sub_if_data *sdata;
3690 u8 radar_detect = 0;
3691
3692 lockdep_assert_held(&local->chanctx_mtx);
3693
3694 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3695 return 0;
3696
3697 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3698 if (sdata->reserved_radar_required)
3699 radar_detect |= BIT(sdata->reserved_chandef.width);
3700
3701 /*
3702 * An in-place reservation context should not have any assigned vifs
3703 * until it replaces the other context.
3704 */
3705 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3706 !list_empty(&ctx->assigned_vifs));
3707
3708 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3709 if (sdata->radar_required)
3710 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3711
3712 return radar_detect;
3713}
3714
Luciano Coelho73de86a2014-02-13 11:31:59 +02003715int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3716 const struct cfg80211_chan_def *chandef,
3717 enum ieee80211_chanctx_mode chanmode,
3718 u8 radar_detect)
3719{
3720 struct ieee80211_local *local = sdata->local;
3721 struct ieee80211_sub_if_data *sdata_iter;
3722 enum nl80211_iftype iftype = sdata->wdev.iftype;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003723 struct ieee80211_chanctx *ctx;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003724 int total = 1;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303725 struct iface_combination_params params = {
3726 .radar_detect = radar_detect,
3727 };
Luciano Coelho73de86a2014-02-13 11:31:59 +02003728
3729 lockdep_assert_held(&local->chanctx_mtx);
3730
3731 if (WARN_ON(hweight32(radar_detect) > 1))
3732 return -EINVAL;
3733
Luciano Coelhob6a55012014-02-27 11:07:21 +02003734 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3735 !chandef->chan))
Luciano Coelho73de86a2014-02-13 11:31:59 +02003736 return -EINVAL;
3737
3738 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3739 return -EINVAL;
3740
Johannes Bergac668af2016-10-21 14:25:14 +02003741 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3742 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
3743 /*
3744 * always passing this is harmless, since it'll be the
3745 * same value that cfg80211 finds if it finds the same
3746 * interface ... and that's always allowed
3747 */
3748 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
3749 }
3750
Luciano Coelho73de86a2014-02-13 11:31:59 +02003751 /* Always allow software iftypes */
3752 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3753 if (radar_detect)
3754 return -EINVAL;
3755 return 0;
3756 }
3757
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303758 if (chandef)
3759 params.num_different_channels = 1;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003760
3761 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303762 params.iftype_num[iftype] = 1;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003763
3764 list_for_each_entry(ctx, &local->chanctx_list, list) {
Michal Kazior5bcae312014-06-25 12:35:06 +02003765 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3766 continue;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303767 params.radar_detect |=
3768 ieee80211_chanctx_radar_detect(local, ctx);
Luciano Coelho73de86a2014-02-13 11:31:59 +02003769 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303770 params.num_different_channels++;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003771 continue;
3772 }
Luciano Coelhob6a55012014-02-27 11:07:21 +02003773 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
Luciano Coelho73de86a2014-02-13 11:31:59 +02003774 cfg80211_chandef_compatible(chandef,
3775 &ctx->conf.def))
3776 continue;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303777 params.num_different_channels++;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003778 }
3779
3780 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3781 struct wireless_dev *wdev_iter;
3782
3783 wdev_iter = &sdata_iter->wdev;
3784
3785 if (sdata_iter == sdata ||
Andrei Otcheretianski0f611d22015-03-12 08:53:30 +02003786 !ieee80211_sdata_running(sdata_iter) ||
Luciano Coelho73de86a2014-02-13 11:31:59 +02003787 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3788 continue;
3789
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303790 params.iftype_num[wdev_iter->iftype]++;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003791 total++;
3792 }
3793
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303794 if (total == 1 && !params.radar_detect)
Luciano Coelho73de86a2014-02-13 11:31:59 +02003795 return 0;
3796
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303797 return cfg80211_check_combinations(local->hw.wiphy, &params);
Luciano Coelho73de86a2014-02-13 11:31:59 +02003798}
Michal Kazior6fa001b2014-04-09 15:29:23 +02003799
3800static void
3801ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3802 void *data)
3803{
3804 u32 *max_num_different_channels = data;
3805
3806 *max_num_different_channels = max(*max_num_different_channels,
3807 c->num_different_channels);
3808}
3809
3810int ieee80211_max_num_channels(struct ieee80211_local *local)
3811{
3812 struct ieee80211_sub_if_data *sdata;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003813 struct ieee80211_chanctx *ctx;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003814 u32 max_num_different_channels = 1;
3815 int err;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303816 struct iface_combination_params params = {0};
Michal Kazior6fa001b2014-04-09 15:29:23 +02003817
3818 lockdep_assert_held(&local->chanctx_mtx);
3819
3820 list_for_each_entry(ctx, &local->chanctx_list, list) {
Michal Kazior5bcae312014-06-25 12:35:06 +02003821 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3822 continue;
3823
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303824 params.num_different_channels++;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003825
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303826 params.radar_detect |=
3827 ieee80211_chanctx_radar_detect(local, ctx);
Michal Kazior6fa001b2014-04-09 15:29:23 +02003828 }
3829
3830 list_for_each_entry_rcu(sdata, &local->interfaces, list)
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303831 params.iftype_num[sdata->wdev.iftype]++;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003832
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303833 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
3834 ieee80211_iter_max_chans,
Michal Kazior6fa001b2014-04-09 15:29:23 +02003835 &max_num_different_channels);
3836 if (err < 0)
3837 return err;
3838
3839 return max_num_different_channels;
3840}
Arik Nemtsov40b861a2014-07-17 17:14:23 +03003841
3842u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3843{
3844 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3845 *buf++ = 7; /* len */
3846 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3847 *buf++ = 0x50;
3848 *buf++ = 0xf2;
3849 *buf++ = 2; /* WME */
3850 *buf++ = 0; /* WME info */
3851 *buf++ = 1; /* WME ver */
3852 *buf++ = qosinfo; /* U-APSD no in use */
3853
3854 return buf;
3855}
Felix Fietkauba8c3d62015-03-27 21:30:37 +01003856
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003857void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
3858 unsigned long *frame_cnt,
3859 unsigned long *byte_cnt)
3860{
3861 struct txq_info *txqi = to_txq_info(txq);
Toke Høiland-Jørgensenbb42f2d2016-09-22 19:04:20 +02003862 u32 frag_cnt = 0, frag_bytes = 0;
3863 struct sk_buff *skb;
3864
3865 skb_queue_walk(&txqi->frags, skb) {
3866 frag_cnt++;
3867 frag_bytes += skb->len;
3868 }
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003869
3870 if (frame_cnt)
Toke Høiland-Jørgensenbb42f2d2016-09-22 19:04:20 +02003871 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003872
3873 if (byte_cnt)
Toke Høiland-Jørgensenbb42f2d2016-09-22 19:04:20 +02003874 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003875}
3876EXPORT_SYMBOL(ieee80211_txq_get_depth);
Emmanuel Grumbachf438ceb2016-10-18 23:12:12 +03003877
3878const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
3879 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
3880 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
3881 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
3882 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
3883};