1c2d1560aSJohannes Berg /* 2c2d1560aSJohannes Berg * Copyright 2002-2005, Instant802 Networks, Inc. 3c2d1560aSJohannes Berg * Copyright 2005-2006, Devicescape Software, Inc. 4c2d1560aSJohannes Berg * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5c2d1560aSJohannes Berg * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 6d98ad83eSJohannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH 7f4a0f0c5SJohannes Berg * Copyright (C) 2015-2016 Intel Deutschland GmbH 8c2d1560aSJohannes Berg * 9c2d1560aSJohannes Berg * This program is free software; you can redistribute it and/or modify 10c2d1560aSJohannes Berg * it under the terms of the GNU General Public License version 2 as 11c2d1560aSJohannes Berg * published by the Free Software Foundation. 12c2d1560aSJohannes Berg * 13c2d1560aSJohannes Berg * utilities for mac80211 14c2d1560aSJohannes Berg */ 15c2d1560aSJohannes Berg 16c2d1560aSJohannes Berg #include <net/mac80211.h> 17c2d1560aSJohannes Berg #include <linux/netdevice.h> 18bc3b2d7fSPaul Gortmaker #include <linux/export.h> 19c2d1560aSJohannes Berg #include <linux/types.h> 20c2d1560aSJohannes Berg #include <linux/slab.h> 21c2d1560aSJohannes Berg #include <linux/skbuff.h> 22c2d1560aSJohannes Berg #include <linux/etherdevice.h> 23c2d1560aSJohannes Berg #include <linux/if_arp.h> 24c2d1560aSJohannes Berg #include <linux/bitmap.h> 25dd76986bSJohannes Berg #include <linux/crc32.h> 26881d966bSEric W. Biederman #include <net/net_namespace.h> 27c2d1560aSJohannes Berg #include <net/cfg80211.h> 28dabeb344SJohannes Berg #include <net/rtnetlink.h> 29c2d1560aSJohannes Berg 30c2d1560aSJohannes Berg #include "ieee80211_i.h" 3124487981SJohannes Berg #include "driver-ops.h" 322c8dccc7SJohannes Berg #include "rate.h" 33ee385855SLuis Carlos Cobo #include "mesh.h" 34c2d1560aSJohannes Berg #include "wme.h" 35f2753ddbSJohannes Berg #include "led.h" 36fffd0934SJohannes Berg #include "wep.h" 37c2d1560aSJohannes Berg 38c2d1560aSJohannes Berg /* privid for wiphys to determine whether they belong to us or not */ 398a47cea7SJohannes Berg const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; 40c2d1560aSJohannes Berg 419a95371aSLuis R. Rodriguez struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) 429a95371aSLuis R. Rodriguez { 439a95371aSLuis R. Rodriguez struct ieee80211_local *local; 449a95371aSLuis R. Rodriguez BUG_ON(!wiphy); 459a95371aSLuis R. Rodriguez 469a95371aSLuis R. Rodriguez local = wiphy_priv(wiphy); 479a95371aSLuis R. Rodriguez return &local->hw; 489a95371aSLuis R. Rodriguez } 499a95371aSLuis R. Rodriguez EXPORT_SYMBOL(wiphy_to_ieee80211_hw); 50c2d1560aSJohannes Berg 515cf121c3SJohannes Berg void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 52c2d1560aSJohannes Berg { 53252b86c4SJohannes Berg struct sk_buff *skb; 542de8e0d9SJohannes Berg struct ieee80211_hdr *hdr; 55c2d1560aSJohannes Berg 56252b86c4SJohannes Berg skb_queue_walk(&tx->skbs, skb) { 572de8e0d9SJohannes Berg hdr = (struct ieee80211_hdr *) skb->data; 58c2d1560aSJohannes Berg hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 59252b86c4SJohannes Berg } 60c2d1560aSJohannes Berg } 61c2d1560aSJohannes Berg 6257fbcce3SJohannes Berg int ieee80211_frame_duration(enum nl80211_band band, size_t len, 63438b61b7SSimon Wunderlich int rate, int erp, int short_preamble, 64438b61b7SSimon Wunderlich int shift) 65c2d1560aSJohannes Berg { 66c2d1560aSJohannes Berg int dur; 67c2d1560aSJohannes Berg 68c2d1560aSJohannes Berg /* calculate duration (in microseconds, rounded up to next higher 69c2d1560aSJohannes Berg * integer if it includes a fractional microsecond) to send frame of 70c2d1560aSJohannes Berg * len bytes (does not include FCS) at the given rate. Duration will 71c2d1560aSJohannes Berg * also include SIFS. 72c2d1560aSJohannes Berg * 73c2d1560aSJohannes Berg * rate is in 100 kbps, so divident is multiplied by 10 in the 74c2d1560aSJohannes Berg * DIV_ROUND_UP() operations. 75438b61b7SSimon Wunderlich * 76438b61b7SSimon Wunderlich * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and 77438b61b7SSimon Wunderlich * is assumed to be 0 otherwise. 78c2d1560aSJohannes Berg */ 79c2d1560aSJohannes Berg 8057fbcce3SJohannes Berg if (band == NL80211_BAND_5GHZ || erp) { 81c2d1560aSJohannes Berg /* 82c2d1560aSJohannes Berg * OFDM: 83c2d1560aSJohannes Berg * 84c2d1560aSJohannes Berg * N_DBPS = DATARATE x 4 85c2d1560aSJohannes Berg * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 86c2d1560aSJohannes Berg * (16 = SIGNAL time, 6 = tail bits) 87c2d1560aSJohannes Berg * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 88c2d1560aSJohannes Berg * 89c2d1560aSJohannes Berg * T_SYM = 4 usec 90438b61b7SSimon Wunderlich * 802.11a - 18.5.2: aSIFSTime = 16 usec 91c2d1560aSJohannes Berg * 802.11g - 19.8.4: aSIFSTime = 10 usec + 92c2d1560aSJohannes Berg * signal ext = 6 usec 93c2d1560aSJohannes Berg */ 94c2d1560aSJohannes Berg dur = 16; /* SIFS + signal ext */ 95438b61b7SSimon Wunderlich dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 96438b61b7SSimon Wunderlich dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 97438b61b7SSimon Wunderlich 98438b61b7SSimon Wunderlich /* IEEE 802.11-2012 18.3.2.4: all values above are: 99438b61b7SSimon Wunderlich * * times 4 for 5 MHz 100438b61b7SSimon Wunderlich * * times 2 for 10 MHz 101438b61b7SSimon Wunderlich */ 102438b61b7SSimon Wunderlich dur *= 1 << shift; 1032103dec1SSimon Wunderlich 1042103dec1SSimon Wunderlich /* rates should already consider the channel bandwidth, 1052103dec1SSimon Wunderlich * don't apply divisor again. 1062103dec1SSimon Wunderlich */ 1072103dec1SSimon Wunderlich dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 1082103dec1SSimon Wunderlich 4 * rate); /* T_SYM x N_SYM */ 109c2d1560aSJohannes Berg } else { 110c2d1560aSJohannes Berg /* 111c2d1560aSJohannes Berg * 802.11b or 802.11g with 802.11b compatibility: 112c2d1560aSJohannes Berg * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 113c2d1560aSJohannes Berg * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 114c2d1560aSJohannes Berg * 115c2d1560aSJohannes Berg * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 116c2d1560aSJohannes Berg * aSIFSTime = 10 usec 117c2d1560aSJohannes Berg * aPreambleLength = 144 usec or 72 usec with short preamble 118c2d1560aSJohannes Berg * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 119c2d1560aSJohannes Berg */ 120c2d1560aSJohannes Berg dur = 10; /* aSIFSTime = 10 usec */ 121c2d1560aSJohannes Berg dur += short_preamble ? (72 + 24) : (144 + 48); 122c2d1560aSJohannes Berg 123c2d1560aSJohannes Berg dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 124c2d1560aSJohannes Berg } 125c2d1560aSJohannes Berg 126c2d1560aSJohannes Berg return dur; 127c2d1560aSJohannes Berg } 128c2d1560aSJohannes Berg 129c2d1560aSJohannes Berg /* Exported duration function for driver use */ 13032bfd35dSJohannes Berg __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 13132bfd35dSJohannes Berg struct ieee80211_vif *vif, 13257fbcce3SJohannes Berg enum nl80211_band band, 1338318d78aSJohannes Berg size_t frame_len, 1348318d78aSJohannes Berg struct ieee80211_rate *rate) 135c2d1560aSJohannes Berg { 13625d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 137c2d1560aSJohannes Berg u16 dur; 138438b61b7SSimon Wunderlich int erp, shift = 0; 13925d834e1SJohannes Berg bool short_preamble = false; 140c2d1560aSJohannes Berg 1418318d78aSJohannes Berg erp = 0; 14225d834e1SJohannes Berg if (vif) { 14325d834e1SJohannes Berg sdata = vif_to_sdata(vif); 144bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 1458318d78aSJohannes Berg if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 1468318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 147438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 14825d834e1SJohannes Berg } 1498318d78aSJohannes Berg 1504ee73f33SMichal Kazior dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 151438b61b7SSimon Wunderlich short_preamble, shift); 152c2d1560aSJohannes Berg 153c2d1560aSJohannes Berg return cpu_to_le16(dur); 154c2d1560aSJohannes Berg } 155c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_generic_frame_duration); 156c2d1560aSJohannes Berg 15732bfd35dSJohannes Berg __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 15832bfd35dSJohannes Berg struct ieee80211_vif *vif, size_t frame_len, 159e039fa4aSJohannes Berg const struct ieee80211_tx_info *frame_txctl) 160c2d1560aSJohannes Berg { 161c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 162c2d1560aSJohannes Berg struct ieee80211_rate *rate; 16325d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 164471b3efdSJohannes Berg bool short_preamble; 1652103dec1SSimon Wunderlich int erp, shift = 0, bitrate; 166c2d1560aSJohannes Berg u16 dur; 1672e92e6f2SJohannes Berg struct ieee80211_supported_band *sband; 1682e92e6f2SJohannes Berg 1694ee73f33SMichal Kazior sband = local->hw.wiphy->bands[frame_txctl->band]; 170c2d1560aSJohannes Berg 17125d834e1SJohannes Berg short_preamble = false; 1727e9ed188SDaniel Drake 173e039fa4aSJohannes Berg rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 1748318d78aSJohannes Berg 1758318d78aSJohannes Berg erp = 0; 17625d834e1SJohannes Berg if (vif) { 17725d834e1SJohannes Berg sdata = vif_to_sdata(vif); 178bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 1798318d78aSJohannes Berg if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 1808318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 181438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 18225d834e1SJohannes Berg } 183c2d1560aSJohannes Berg 1842103dec1SSimon Wunderlich bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 1852103dec1SSimon Wunderlich 186c2d1560aSJohannes Berg /* CTS duration */ 1872103dec1SSimon Wunderlich dur = ieee80211_frame_duration(sband->band, 10, bitrate, 188438b61b7SSimon Wunderlich erp, short_preamble, shift); 189c2d1560aSJohannes Berg /* Data frame duration */ 1902103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 191438b61b7SSimon Wunderlich erp, short_preamble, shift); 192c2d1560aSJohannes Berg /* ACK duration */ 1932103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, 10, bitrate, 194438b61b7SSimon Wunderlich erp, short_preamble, shift); 195c2d1560aSJohannes Berg 196c2d1560aSJohannes Berg return cpu_to_le16(dur); 197c2d1560aSJohannes Berg } 198c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_rts_duration); 199c2d1560aSJohannes Berg 20032bfd35dSJohannes Berg __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 20132bfd35dSJohannes Berg struct ieee80211_vif *vif, 202c2d1560aSJohannes Berg size_t frame_len, 203e039fa4aSJohannes Berg const struct ieee80211_tx_info *frame_txctl) 204c2d1560aSJohannes Berg { 205c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 206c2d1560aSJohannes Berg struct ieee80211_rate *rate; 20725d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 208471b3efdSJohannes Berg bool short_preamble; 2092103dec1SSimon Wunderlich int erp, shift = 0, bitrate; 210c2d1560aSJohannes Berg u16 dur; 2112e92e6f2SJohannes Berg struct ieee80211_supported_band *sband; 2122e92e6f2SJohannes Berg 2134ee73f33SMichal Kazior sband = local->hw.wiphy->bands[frame_txctl->band]; 214c2d1560aSJohannes Berg 21525d834e1SJohannes Berg short_preamble = false; 2167e9ed188SDaniel Drake 217e039fa4aSJohannes Berg rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 2188318d78aSJohannes Berg erp = 0; 21925d834e1SJohannes Berg if (vif) { 22025d834e1SJohannes Berg sdata = vif_to_sdata(vif); 221bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 2228318d78aSJohannes Berg if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 2238318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 224438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 22525d834e1SJohannes Berg } 226c2d1560aSJohannes Berg 2272103dec1SSimon Wunderlich bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 2282103dec1SSimon Wunderlich 229c2d1560aSJohannes Berg /* Data frame duration */ 2302103dec1SSimon Wunderlich dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 231438b61b7SSimon Wunderlich erp, short_preamble, shift); 232e039fa4aSJohannes Berg if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 233c2d1560aSJohannes Berg /* ACK duration */ 2342103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, 10, bitrate, 235438b61b7SSimon Wunderlich erp, short_preamble, shift); 236c2d1560aSJohannes Berg } 237c2d1560aSJohannes Berg 238c2d1560aSJohannes Berg return cpu_to_le16(dur); 239c2d1560aSJohannes Berg } 240c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_ctstoself_duration); 241c2d1560aSJohannes Berg 2423a25a8c8SJohannes Berg void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) 2433a25a8c8SJohannes Berg { 2443a25a8c8SJohannes Berg struct ieee80211_sub_if_data *sdata; 245a6f38ac3SJohannes Berg int n_acs = IEEE80211_NUM_ACS; 246a6f38ac3SJohannes Berg 24780a83cfcSMichal Kazior if (local->ops->wake_tx_queue) 24880a83cfcSMichal Kazior return; 24980a83cfcSMichal Kazior 250a6f38ac3SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 251a6f38ac3SJohannes Berg n_acs = 1; 2523a25a8c8SJohannes Berg 2533a25a8c8SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 2543a25a8c8SJohannes Berg int ac; 2553a25a8c8SJohannes Berg 256f142c6b9SJohannes Berg if (!sdata->dev) 257f142c6b9SJohannes Berg continue; 258f142c6b9SJohannes Berg 2593a25a8c8SJohannes Berg if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && 2603a25a8c8SJohannes Berg local->queue_stop_reasons[sdata->vif.cab_queue] != 0) 2613a25a8c8SJohannes Berg continue; 2623a25a8c8SJohannes Berg 263a6f38ac3SJohannes Berg for (ac = 0; ac < n_acs; ac++) { 2643a25a8c8SJohannes Berg int ac_queue = sdata->vif.hw_queue[ac]; 2653a25a8c8SJohannes Berg 2663a25a8c8SJohannes Berg if (ac_queue == queue || 2673a25a8c8SJohannes Berg (sdata->vif.cab_queue == queue && 2683a25a8c8SJohannes Berg local->queue_stop_reasons[ac_queue] == 0 && 2693a25a8c8SJohannes Berg skb_queue_empty(&local->pending[ac_queue]))) 2703a25a8c8SJohannes Berg netif_wake_subqueue(sdata->dev, ac); 2713a25a8c8SJohannes Berg } 2723a25a8c8SJohannes Berg } 2733a25a8c8SJohannes Berg } 2743a25a8c8SJohannes Berg 275ce7c9111SKalle Valo static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 276cca07b00SLuciano Coelho enum queue_stop_reason reason, 277cca07b00SLuciano Coelho bool refcounted) 278c2d1560aSJohannes Berg { 279c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 280c2d1560aSJohannes Berg 281b5878a2dSJohannes Berg trace_wake_queue(local, queue, reason); 282b5878a2dSJohannes Berg 283e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 28496f5e66eSJohannes Berg return; 28596f5e66eSJohannes Berg 286ada15125SJohannes Berg if (!test_bit(reason, &local->queue_stop_reasons[queue])) 287ada15125SJohannes Berg return; 288ada15125SJohannes Berg 289856142cdSJohannes Berg if (!refcounted) { 290cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason] = 0; 291856142cdSJohannes Berg } else { 292cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason]--; 293856142cdSJohannes Berg if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 294856142cdSJohannes Berg local->q_stop_reasons[queue][reason] = 0; 295856142cdSJohannes Berg } 296cca07b00SLuciano Coelho 297cca07b00SLuciano Coelho if (local->q_stop_reasons[queue][reason] == 0) 298ce7c9111SKalle Valo __clear_bit(reason, &local->queue_stop_reasons[queue]); 299ce7c9111SKalle Valo 300ce7c9111SKalle Valo if (local->queue_stop_reasons[queue] != 0) 301ce7c9111SKalle Valo /* someone still has this queue stopped */ 302ce7c9111SKalle Valo return; 303ce7c9111SKalle Valo 3047236fe29SJohannes Berg if (skb_queue_empty(&local->pending[queue])) { 305cf0277e7SJohannes Berg rcu_read_lock(); 3063a25a8c8SJohannes Berg ieee80211_propagate_queue_wake(local, queue); 307cf0277e7SJohannes Berg rcu_read_unlock(); 3087236fe29SJohannes Berg } else 3097236fe29SJohannes Berg tasklet_schedule(&local->tx_pending_tasklet); 310c2d1560aSJohannes Berg } 311ce7c9111SKalle Valo 31296f5e66eSJohannes Berg void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 313cca07b00SLuciano Coelho enum queue_stop_reason reason, 314cca07b00SLuciano Coelho bool refcounted) 315ce7c9111SKalle Valo { 316ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 317ce7c9111SKalle Valo unsigned long flags; 318ce7c9111SKalle Valo 319ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 320cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, queue, reason, refcounted); 321ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 322ce7c9111SKalle Valo } 323ce7c9111SKalle Valo 324ce7c9111SKalle Valo void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 325ce7c9111SKalle Valo { 326ce7c9111SKalle Valo ieee80211_wake_queue_by_reason(hw, queue, 327cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 328cca07b00SLuciano Coelho false); 329ce7c9111SKalle Valo } 330c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_wake_queue); 331c2d1560aSJohannes Berg 332ce7c9111SKalle Valo static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 333cca07b00SLuciano Coelho enum queue_stop_reason reason, 334cca07b00SLuciano Coelho bool refcounted) 335c2d1560aSJohannes Berg { 336c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 337cf0277e7SJohannes Berg struct ieee80211_sub_if_data *sdata; 338a6f38ac3SJohannes Berg int n_acs = IEEE80211_NUM_ACS; 339c2d1560aSJohannes Berg 340b5878a2dSJohannes Berg trace_stop_queue(local, queue, reason); 341b5878a2dSJohannes Berg 342e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 34396f5e66eSJohannes Berg return; 34496f5e66eSJohannes Berg 345cca07b00SLuciano Coelho if (!refcounted) 346cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason] = 1; 347cca07b00SLuciano Coelho else 348cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason]++; 349ada15125SJohannes Berg 350cca07b00SLuciano Coelho if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) 351cca07b00SLuciano Coelho return; 352cf0277e7SJohannes Berg 35380a83cfcSMichal Kazior if (local->ops->wake_tx_queue) 35480a83cfcSMichal Kazior return; 35580a83cfcSMichal Kazior 356a6f38ac3SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 357a6f38ac3SJohannes Berg n_acs = 1; 358a6f38ac3SJohannes Berg 359cf0277e7SJohannes Berg rcu_read_lock(); 3603a25a8c8SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 3613a25a8c8SJohannes Berg int ac; 3623a25a8c8SJohannes Berg 363f142c6b9SJohannes Berg if (!sdata->dev) 364f142c6b9SJohannes Berg continue; 365f142c6b9SJohannes Berg 366a6f38ac3SJohannes Berg for (ac = 0; ac < n_acs; ac++) { 3673a25a8c8SJohannes Berg if (sdata->vif.hw_queue[ac] == queue || 3683a25a8c8SJohannes Berg sdata->vif.cab_queue == queue) 3693a25a8c8SJohannes Berg netif_stop_subqueue(sdata->dev, ac); 3703a25a8c8SJohannes Berg } 3713a25a8c8SJohannes Berg } 372cf0277e7SJohannes Berg rcu_read_unlock(); 373c2d1560aSJohannes Berg } 374ce7c9111SKalle Valo 37596f5e66eSJohannes Berg void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 376cca07b00SLuciano Coelho enum queue_stop_reason reason, 377cca07b00SLuciano Coelho bool refcounted) 378ce7c9111SKalle Valo { 379ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 380ce7c9111SKalle Valo unsigned long flags; 381ce7c9111SKalle Valo 382ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 383cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, queue, reason, refcounted); 384ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 385ce7c9111SKalle Valo } 386ce7c9111SKalle Valo 387ce7c9111SKalle Valo void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 388ce7c9111SKalle Valo { 389ce7c9111SKalle Valo ieee80211_stop_queue_by_reason(hw, queue, 390cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 391cca07b00SLuciano Coelho false); 392ce7c9111SKalle Valo } 393c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_stop_queue); 394c2d1560aSJohannes Berg 3958f77f384SJohannes Berg void ieee80211_add_pending_skb(struct ieee80211_local *local, 3968f77f384SJohannes Berg struct sk_buff *skb) 3978f77f384SJohannes Berg { 3988f77f384SJohannes Berg struct ieee80211_hw *hw = &local->hw; 3998f77f384SJohannes Berg unsigned long flags; 400a7bc376cSJohannes Berg struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 4013a25a8c8SJohannes Berg int queue = info->hw_queue; 402a7bc376cSJohannes Berg 403a7bc376cSJohannes Berg if (WARN_ON(!info->control.vif)) { 404d4fa14cdSFelix Fietkau ieee80211_free_txskb(&local->hw, skb); 405a7bc376cSJohannes Berg return; 406a7bc376cSJohannes Berg } 4078f77f384SJohannes Berg 4088f77f384SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 409cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 410cca07b00SLuciano Coelho false); 4113b8d81e0SJohannes Berg __skb_queue_tail(&local->pending[queue], skb); 412cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 413cca07b00SLuciano Coelho false); 4148f77f384SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 4158f77f384SJohannes Berg } 4168f77f384SJohannes Berg 417e3685e03SJohannes Berg void ieee80211_add_pending_skbs(struct ieee80211_local *local, 418e3685e03SJohannes Berg struct sk_buff_head *skbs) 4198f77f384SJohannes Berg { 4208f77f384SJohannes Berg struct ieee80211_hw *hw = &local->hw; 4218f77f384SJohannes Berg struct sk_buff *skb; 4228f77f384SJohannes Berg unsigned long flags; 423b0b97a8aSJohannes Berg int queue, i; 4248f77f384SJohannes Berg 4258f77f384SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 4268f77f384SJohannes Berg while ((skb = skb_dequeue(skbs))) { 427a7bc376cSJohannes Berg struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 428a7bc376cSJohannes Berg 429a7bc376cSJohannes Berg if (WARN_ON(!info->control.vif)) { 430d4fa14cdSFelix Fietkau ieee80211_free_txskb(&local->hw, skb); 431a7bc376cSJohannes Berg continue; 432a7bc376cSJohannes Berg } 433a7bc376cSJohannes Berg 4343a25a8c8SJohannes Berg queue = info->hw_queue; 4354644ae89SJohannes Berg 4364644ae89SJohannes Berg __ieee80211_stop_queue(hw, queue, 437cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 438cca07b00SLuciano Coelho false); 4394644ae89SJohannes Berg 4403b8d81e0SJohannes Berg __skb_queue_tail(&local->pending[queue], skb); 4418f77f384SJohannes Berg } 4428f77f384SJohannes Berg 4433b8d81e0SJohannes Berg for (i = 0; i < hw->queues; i++) 4448f77f384SJohannes Berg __ieee80211_wake_queue(hw, i, 445cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 446cca07b00SLuciano Coelho false); 4478f77f384SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 4488f77f384SJohannes Berg } 4498f77f384SJohannes Berg 450ce7c9111SKalle Valo void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 451445ea4e8SJohannes Berg unsigned long queues, 452cca07b00SLuciano Coelho enum queue_stop_reason reason, 453cca07b00SLuciano Coelho bool refcounted) 454c2d1560aSJohannes Berg { 455ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 456ce7c9111SKalle Valo unsigned long flags; 457c2d1560aSJohannes Berg int i; 458c2d1560aSJohannes Berg 459ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 460ce7c9111SKalle Valo 461445ea4e8SJohannes Berg for_each_set_bit(i, &queues, hw->queues) 462cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, i, reason, refcounted); 463ce7c9111SKalle Valo 464ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 465ce7c9111SKalle Valo } 466ce7c9111SKalle Valo 467ce7c9111SKalle Valo void ieee80211_stop_queues(struct ieee80211_hw *hw) 468ce7c9111SKalle Valo { 469445ea4e8SJohannes Berg ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 470cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 471cca07b00SLuciano Coelho false); 472c2d1560aSJohannes Berg } 473c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_stop_queues); 474c2d1560aSJohannes Berg 47592ab8535STomas Winkler int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 47692ab8535STomas Winkler { 47792ab8535STomas Winkler struct ieee80211_local *local = hw_to_local(hw); 4783b8d81e0SJohannes Berg unsigned long flags; 4793b8d81e0SJohannes Berg int ret; 48096f5e66eSJohannes Berg 481e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 48296f5e66eSJohannes Berg return true; 48396f5e66eSJohannes Berg 4843b8d81e0SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 4852419ea14SThomas Pedersen ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 4862419ea14SThomas Pedersen &local->queue_stop_reasons[queue]); 4873b8d81e0SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 4883b8d81e0SJohannes Berg return ret; 48992ab8535STomas Winkler } 49092ab8535STomas Winkler EXPORT_SYMBOL(ieee80211_queue_stopped); 49192ab8535STomas Winkler 492ce7c9111SKalle Valo void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 493445ea4e8SJohannes Berg unsigned long queues, 494cca07b00SLuciano Coelho enum queue_stop_reason reason, 495cca07b00SLuciano Coelho bool refcounted) 496c2d1560aSJohannes Berg { 497ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 498ce7c9111SKalle Valo unsigned long flags; 499c2d1560aSJohannes Berg int i; 500c2d1560aSJohannes Berg 501ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 502ce7c9111SKalle Valo 503445ea4e8SJohannes Berg for_each_set_bit(i, &queues, hw->queues) 504cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, i, reason, refcounted); 505ce7c9111SKalle Valo 506ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 507ce7c9111SKalle Valo } 508ce7c9111SKalle Valo 509ce7c9111SKalle Valo void ieee80211_wake_queues(struct ieee80211_hw *hw) 510ce7c9111SKalle Valo { 511445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 512cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 513cca07b00SLuciano Coelho false); 514c2d1560aSJohannes Berg } 515c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_wake_queues); 516dabeb344SJohannes Berg 51726da23b6SLuciano Coelho static unsigned int 51826da23b6SLuciano Coelho ieee80211_get_vif_queues(struct ieee80211_local *local, 51939ecc01dSJohannes Berg struct ieee80211_sub_if_data *sdata) 52039ecc01dSJohannes Berg { 52126da23b6SLuciano Coelho unsigned int queues; 52239ecc01dSJohannes Berg 52330686bf7SJohannes Berg if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 52439ecc01dSJohannes Berg int ac; 52539ecc01dSJohannes Berg 52639ecc01dSJohannes Berg queues = 0; 52739ecc01dSJohannes Berg 52839ecc01dSJohannes Berg for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 52939ecc01dSJohannes Berg queues |= BIT(sdata->vif.hw_queue[ac]); 53039ecc01dSJohannes Berg if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 53139ecc01dSJohannes Berg queues |= BIT(sdata->vif.cab_queue); 53239ecc01dSJohannes Berg } else { 53339ecc01dSJohannes Berg /* all queues */ 53439ecc01dSJohannes Berg queues = BIT(local->hw.queues) - 1; 53539ecc01dSJohannes Berg } 53639ecc01dSJohannes Berg 53726da23b6SLuciano Coelho return queues; 53826da23b6SLuciano Coelho } 53926da23b6SLuciano Coelho 5404f9610d5SLiad Kaufman void __ieee80211_flush_queues(struct ieee80211_local *local, 5414f9610d5SLiad Kaufman struct ieee80211_sub_if_data *sdata, 5423b24f4c6SEmmanuel Grumbach unsigned int queues, bool drop) 54326da23b6SLuciano Coelho { 54426da23b6SLuciano Coelho if (!local->ops->flush) 54526da23b6SLuciano Coelho return; 54626da23b6SLuciano Coelho 5474f9610d5SLiad Kaufman /* 5484f9610d5SLiad Kaufman * If no queue was set, or if the HW doesn't support 5494f9610d5SLiad Kaufman * IEEE80211_HW_QUEUE_CONTROL - flush all queues 5504f9610d5SLiad Kaufman */ 55130686bf7SJohannes Berg if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 55226da23b6SLuciano Coelho queues = ieee80211_get_vif_queues(local, sdata); 55326da23b6SLuciano Coelho 55459f48fe2SLuciano Coelho ieee80211_stop_queues_by_reason(&local->hw, queues, 555cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_FLUSH, 556cca07b00SLuciano Coelho false); 557445ea4e8SJohannes Berg 5583b24f4c6SEmmanuel Grumbach drv_flush(local, sdata, queues, drop); 559445ea4e8SJohannes Berg 56059f48fe2SLuciano Coelho ieee80211_wake_queues_by_reason(&local->hw, queues, 561cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_FLUSH, 562cca07b00SLuciano Coelho false); 56339ecc01dSJohannes Berg } 56439ecc01dSJohannes Berg 5654f9610d5SLiad Kaufman void ieee80211_flush_queues(struct ieee80211_local *local, 5663b24f4c6SEmmanuel Grumbach struct ieee80211_sub_if_data *sdata, bool drop) 5674f9610d5SLiad Kaufman { 5683b24f4c6SEmmanuel Grumbach __ieee80211_flush_queues(local, sdata, 0, drop); 5694f9610d5SLiad Kaufman } 5704f9610d5SLiad Kaufman 57126da23b6SLuciano Coelho void ieee80211_stop_vif_queues(struct ieee80211_local *local, 57226da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata, 57326da23b6SLuciano Coelho enum queue_stop_reason reason) 57426da23b6SLuciano Coelho { 57526da23b6SLuciano Coelho ieee80211_stop_queues_by_reason(&local->hw, 57626da23b6SLuciano Coelho ieee80211_get_vif_queues(local, sdata), 57726da23b6SLuciano Coelho reason, true); 57826da23b6SLuciano Coelho } 57926da23b6SLuciano Coelho 58026da23b6SLuciano Coelho void ieee80211_wake_vif_queues(struct ieee80211_local *local, 58126da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata, 58226da23b6SLuciano Coelho enum queue_stop_reason reason) 58326da23b6SLuciano Coelho { 58426da23b6SLuciano Coelho ieee80211_wake_queues_by_reason(&local->hw, 58526da23b6SLuciano Coelho ieee80211_get_vif_queues(local, sdata), 58626da23b6SLuciano Coelho reason, true); 58726da23b6SLuciano Coelho } 58826da23b6SLuciano Coelho 5893384d757SArik Nemtsov static void __iterate_interfaces(struct ieee80211_local *local, 590c7c71066SJohannes Berg u32 iter_flags, 591dabeb344SJohannes Berg void (*iterator)(void *data, u8 *mac, 59232bfd35dSJohannes Berg struct ieee80211_vif *vif), 593dabeb344SJohannes Berg void *data) 594dabeb344SJohannes Berg { 595dabeb344SJohannes Berg struct ieee80211_sub_if_data *sdata; 5963384d757SArik Nemtsov bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 597dabeb344SJohannes Berg 598e38bad47SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 59951fb61e7SJohannes Berg switch (sdata->vif.type) { 60005c914feSJohannes Berg case NL80211_IFTYPE_MONITOR: 601d8212184SAviya Erenfeld if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) 60231eba5bcSFelix Fietkau continue; 60331eba5bcSFelix Fietkau break; 60405c914feSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 605dabeb344SJohannes Berg continue; 6062ca27bcfSJohannes Berg default: 607dabeb344SJohannes Berg break; 608dabeb344SJohannes Berg } 6098b2c9824SJohannes Berg if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 6103384d757SArik Nemtsov active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 6118b2c9824SJohannes Berg continue; 6123384d757SArik Nemtsov if (ieee80211_sdata_running(sdata) || !active_only) 61347846c9bSJohannes Berg iterator(data, sdata->vif.addr, 61432bfd35dSJohannes Berg &sdata->vif); 615dabeb344SJohannes Berg } 616e38bad47SJohannes Berg 617c7c71066SJohannes Berg sdata = rcu_dereference_check(local->monitor_sdata, 618c7c71066SJohannes Berg lockdep_is_held(&local->iflist_mtx) || 619c7c71066SJohannes Berg lockdep_rtnl_is_held()); 6208b2c9824SJohannes Berg if (sdata && 6213384d757SArik Nemtsov (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 6228b2c9824SJohannes Berg sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 623685fb72bSJohannes Berg iterator(data, sdata->vif.addr, &sdata->vif); 624c7c71066SJohannes Berg } 625685fb72bSJohannes Berg 6263384d757SArik Nemtsov void ieee80211_iterate_interfaces( 627c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 628c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 629c7c71066SJohannes Berg struct ieee80211_vif *vif), 630c7c71066SJohannes Berg void *data) 631c7c71066SJohannes Berg { 632c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 633c7c71066SJohannes Berg 634c7c71066SJohannes Berg mutex_lock(&local->iflist_mtx); 6353384d757SArik Nemtsov __iterate_interfaces(local, iter_flags, iterator, data); 636c7c71066SJohannes Berg mutex_unlock(&local->iflist_mtx); 637c7c71066SJohannes Berg } 6383384d757SArik Nemtsov EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 639c7c71066SJohannes Berg 640c7c71066SJohannes Berg void ieee80211_iterate_active_interfaces_atomic( 641c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 642c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 643c7c71066SJohannes Berg struct ieee80211_vif *vif), 644c7c71066SJohannes Berg void *data) 645c7c71066SJohannes Berg { 646c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 647c7c71066SJohannes Berg 648c7c71066SJohannes Berg rcu_read_lock(); 6493384d757SArik Nemtsov __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 6503384d757SArik Nemtsov iterator, data); 651e38bad47SJohannes Berg rcu_read_unlock(); 652dabeb344SJohannes Berg } 6532f561febSIvo van Doorn EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 65437ffc8daSJohannes Berg 655c7c71066SJohannes Berg void ieee80211_iterate_active_interfaces_rtnl( 656c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 657c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 658c7c71066SJohannes Berg struct ieee80211_vif *vif), 659c7c71066SJohannes Berg void *data) 660c7c71066SJohannes Berg { 661c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 662c7c71066SJohannes Berg 663c7c71066SJohannes Berg ASSERT_RTNL(); 664c7c71066SJohannes Berg 6653384d757SArik Nemtsov __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 6663384d757SArik Nemtsov iterator, data); 667c7c71066SJohannes Berg } 668c7c71066SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); 669c7c71066SJohannes Berg 6700fc1e049SArik Nemtsov static void __iterate_stations(struct ieee80211_local *local, 6710fc1e049SArik Nemtsov void (*iterator)(void *data, 6720fc1e049SArik Nemtsov struct ieee80211_sta *sta), 6730fc1e049SArik Nemtsov void *data) 6740fc1e049SArik Nemtsov { 6750fc1e049SArik Nemtsov struct sta_info *sta; 6760fc1e049SArik Nemtsov 6770fc1e049SArik Nemtsov list_for_each_entry_rcu(sta, &local->sta_list, list) { 6780fc1e049SArik Nemtsov if (!sta->uploaded) 6790fc1e049SArik Nemtsov continue; 6800fc1e049SArik Nemtsov 6810fc1e049SArik Nemtsov iterator(data, &sta->sta); 6820fc1e049SArik Nemtsov } 6830fc1e049SArik Nemtsov } 6840fc1e049SArik Nemtsov 6850fc1e049SArik Nemtsov void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 6860fc1e049SArik Nemtsov void (*iterator)(void *data, 6870fc1e049SArik Nemtsov struct ieee80211_sta *sta), 6880fc1e049SArik Nemtsov void *data) 6890fc1e049SArik Nemtsov { 6900fc1e049SArik Nemtsov struct ieee80211_local *local = hw_to_local(hw); 6910fc1e049SArik Nemtsov 6920fc1e049SArik Nemtsov rcu_read_lock(); 6930fc1e049SArik Nemtsov __iterate_stations(local, iterator, data); 6940fc1e049SArik Nemtsov rcu_read_unlock(); 6950fc1e049SArik Nemtsov } 6960fc1e049SArik Nemtsov EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 6970fc1e049SArik Nemtsov 698ad7e718cSJohannes Berg struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 699ad7e718cSJohannes Berg { 700ad7e718cSJohannes Berg struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 701ad7e718cSJohannes Berg 702ad7e718cSJohannes Berg if (!ieee80211_sdata_running(sdata) || 703ad7e718cSJohannes Berg !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 704ad7e718cSJohannes Berg return NULL; 705ad7e718cSJohannes Berg return &sdata->vif; 706ad7e718cSJohannes Berg } 707ad7e718cSJohannes Berg EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 708ad7e718cSJohannes Berg 709dc5a1ad7SEmmanuel Grumbach struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 710dc5a1ad7SEmmanuel Grumbach { 7116513e98eSJohannes Berg struct ieee80211_sub_if_data *sdata; 7126513e98eSJohannes Berg 7136513e98eSJohannes Berg if (!vif) 7146513e98eSJohannes Berg return NULL; 7156513e98eSJohannes Berg 7166513e98eSJohannes Berg sdata = vif_to_sdata(vif); 717dc5a1ad7SEmmanuel Grumbach 718dc5a1ad7SEmmanuel Grumbach if (!ieee80211_sdata_running(sdata) || 719dc5a1ad7SEmmanuel Grumbach !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 720dc5a1ad7SEmmanuel Grumbach return NULL; 721dc5a1ad7SEmmanuel Grumbach 722dc5a1ad7SEmmanuel Grumbach return &sdata->wdev; 723dc5a1ad7SEmmanuel Grumbach } 724dc5a1ad7SEmmanuel Grumbach EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 725dc5a1ad7SEmmanuel Grumbach 72642935ecaSLuis R. Rodriguez /* 72742935ecaSLuis R. Rodriguez * Nothing should have been stuffed into the workqueue during 7284afaff17SEmmanuel Grumbach * the suspend->resume cycle. Since we can't check each caller 7294afaff17SEmmanuel Grumbach * of this function if we are already quiescing / suspended, 7304afaff17SEmmanuel Grumbach * check here and don't WARN since this can actually happen when 7314afaff17SEmmanuel Grumbach * the rx path (for example) is racing against __ieee80211_suspend 7324afaff17SEmmanuel Grumbach * and suspending / quiescing was set after the rx path checked 7334afaff17SEmmanuel Grumbach * them. 73442935ecaSLuis R. Rodriguez */ 73542935ecaSLuis R. Rodriguez static bool ieee80211_can_queue_work(struct ieee80211_local *local) 73642935ecaSLuis R. Rodriguez { 7374afaff17SEmmanuel Grumbach if (local->quiescing || (local->suspended && !local->resuming)) { 7384afaff17SEmmanuel Grumbach pr_warn("queueing ieee80211 work while going to suspend\n"); 73942935ecaSLuis R. Rodriguez return false; 7404afaff17SEmmanuel Grumbach } 74142935ecaSLuis R. Rodriguez 74242935ecaSLuis R. Rodriguez return true; 74342935ecaSLuis R. Rodriguez } 74442935ecaSLuis R. Rodriguez 74542935ecaSLuis R. Rodriguez void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 74642935ecaSLuis R. Rodriguez { 74742935ecaSLuis R. Rodriguez struct ieee80211_local *local = hw_to_local(hw); 74842935ecaSLuis R. Rodriguez 74942935ecaSLuis R. Rodriguez if (!ieee80211_can_queue_work(local)) 75042935ecaSLuis R. Rodriguez return; 75142935ecaSLuis R. Rodriguez 75242935ecaSLuis R. Rodriguez queue_work(local->workqueue, work); 75342935ecaSLuis R. Rodriguez } 75442935ecaSLuis R. Rodriguez EXPORT_SYMBOL(ieee80211_queue_work); 75542935ecaSLuis R. Rodriguez 75642935ecaSLuis R. Rodriguez void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 75742935ecaSLuis R. Rodriguez struct delayed_work *dwork, 75842935ecaSLuis R. Rodriguez unsigned long delay) 75942935ecaSLuis R. Rodriguez { 76042935ecaSLuis R. Rodriguez struct ieee80211_local *local = hw_to_local(hw); 76142935ecaSLuis R. Rodriguez 76242935ecaSLuis R. Rodriguez if (!ieee80211_can_queue_work(local)) 76342935ecaSLuis R. Rodriguez return; 76442935ecaSLuis R. Rodriguez 76542935ecaSLuis R. Rodriguez queue_delayed_work(local->workqueue, dwork, delay); 76642935ecaSLuis R. Rodriguez } 76742935ecaSLuis R. Rodriguez EXPORT_SYMBOL(ieee80211_queue_delayed_work); 76842935ecaSLuis R. Rodriguez 76935d865afSJohannes Berg u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 770dd76986bSJohannes Berg struct ieee802_11_elems *elems, 771dd76986bSJohannes Berg u64 filter, u32 crc) 772dd76986bSJohannes Berg { 773dd76986bSJohannes Berg size_t left = len; 77435d865afSJohannes Berg const u8 *pos = start; 775dd76986bSJohannes Berg bool calc_crc = filter != 0; 776fcff4f10SPaul Stewart DECLARE_BITMAP(seen_elems, 256); 777b2e506bfSJohannes Berg const u8 *ie; 778dd76986bSJohannes Berg 779fcff4f10SPaul Stewart bitmap_zero(seen_elems, 256); 780dd76986bSJohannes Berg memset(elems, 0, sizeof(*elems)); 781dd76986bSJohannes Berg elems->ie_start = start; 782dd76986bSJohannes Berg elems->total_len = len; 783dd76986bSJohannes Berg 784dd76986bSJohannes Berg while (left >= 2) { 785dd76986bSJohannes Berg u8 id, elen; 786fcff4f10SPaul Stewart bool elem_parse_failed; 787dd76986bSJohannes Berg 788dd76986bSJohannes Berg id = *pos++; 789dd76986bSJohannes Berg elen = *pos++; 790dd76986bSJohannes Berg left -= 2; 791dd76986bSJohannes Berg 792fcff4f10SPaul Stewart if (elen > left) { 793fcff4f10SPaul Stewart elems->parse_error = true; 794dd76986bSJohannes Berg break; 795fcff4f10SPaul Stewart } 796fcff4f10SPaul Stewart 7979690fb16SJohannes Berg switch (id) { 7989690fb16SJohannes Berg case WLAN_EID_SSID: 7999690fb16SJohannes Berg case WLAN_EID_SUPP_RATES: 8009690fb16SJohannes Berg case WLAN_EID_FH_PARAMS: 8019690fb16SJohannes Berg case WLAN_EID_DS_PARAMS: 8029690fb16SJohannes Berg case WLAN_EID_CF_PARAMS: 8039690fb16SJohannes Berg case WLAN_EID_TIM: 8049690fb16SJohannes Berg case WLAN_EID_IBSS_PARAMS: 8059690fb16SJohannes Berg case WLAN_EID_CHALLENGE: 8069690fb16SJohannes Berg case WLAN_EID_RSN: 8079690fb16SJohannes Berg case WLAN_EID_ERP_INFO: 8089690fb16SJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 8099690fb16SJohannes Berg case WLAN_EID_HT_CAPABILITY: 8109690fb16SJohannes Berg case WLAN_EID_HT_OPERATION: 8119690fb16SJohannes Berg case WLAN_EID_VHT_CAPABILITY: 8129690fb16SJohannes Berg case WLAN_EID_VHT_OPERATION: 8139690fb16SJohannes Berg case WLAN_EID_MESH_ID: 8149690fb16SJohannes Berg case WLAN_EID_MESH_CONFIG: 8159690fb16SJohannes Berg case WLAN_EID_PEER_MGMT: 8169690fb16SJohannes Berg case WLAN_EID_PREQ: 8179690fb16SJohannes Berg case WLAN_EID_PREP: 8189690fb16SJohannes Berg case WLAN_EID_PERR: 8199690fb16SJohannes Berg case WLAN_EID_RANN: 8209690fb16SJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 8219690fb16SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 8229690fb16SJohannes Berg case WLAN_EID_COUNTRY: 8239690fb16SJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 8249690fb16SJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 82585220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 826b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 8278f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 8289041c1faSArik Nemtsov case WLAN_EID_EXT_CAPABILITY: 82953837584SArik Nemtsov case WLAN_EID_CHAN_SWITCH_TIMING: 83053837584SArik Nemtsov case WLAN_EID_LINK_ID: 831b2e506bfSJohannes Berg /* 832b2e506bfSJohannes Berg * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible 833b2e506bfSJohannes Berg * that if the content gets bigger it might be needed more than once 834b2e506bfSJohannes Berg */ 8359690fb16SJohannes Berg if (test_bit(id, seen_elems)) { 836fcff4f10SPaul Stewart elems->parse_error = true; 837fcff4f10SPaul Stewart left -= elen; 838fcff4f10SPaul Stewart pos += elen; 839fcff4f10SPaul Stewart continue; 840fcff4f10SPaul Stewart } 8419690fb16SJohannes Berg break; 8429690fb16SJohannes Berg } 843dd76986bSJohannes Berg 844dd76986bSJohannes Berg if (calc_crc && id < 64 && (filter & (1ULL << id))) 845dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 846dd76986bSJohannes Berg 847fcff4f10SPaul Stewart elem_parse_failed = false; 848fcff4f10SPaul Stewart 849dd76986bSJohannes Berg switch (id) { 85053837584SArik Nemtsov case WLAN_EID_LINK_ID: 85153837584SArik Nemtsov if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { 85253837584SArik Nemtsov elem_parse_failed = true; 85353837584SArik Nemtsov break; 85453837584SArik Nemtsov } 85553837584SArik Nemtsov elems->lnk_id = (void *)(pos - 2); 85653837584SArik Nemtsov break; 85753837584SArik Nemtsov case WLAN_EID_CHAN_SWITCH_TIMING: 85853837584SArik Nemtsov if (elen != sizeof(struct ieee80211_ch_switch_timing)) { 85953837584SArik Nemtsov elem_parse_failed = true; 86053837584SArik Nemtsov break; 86153837584SArik Nemtsov } 86253837584SArik Nemtsov elems->ch_sw_timing = (void *)pos; 86353837584SArik Nemtsov break; 8649041c1faSArik Nemtsov case WLAN_EID_EXT_CAPABILITY: 8659041c1faSArik Nemtsov elems->ext_capab = pos; 8669041c1faSArik Nemtsov elems->ext_capab_len = elen; 8679041c1faSArik Nemtsov break; 868dd76986bSJohannes Berg case WLAN_EID_SSID: 869dd76986bSJohannes Berg elems->ssid = pos; 870dd76986bSJohannes Berg elems->ssid_len = elen; 871dd76986bSJohannes Berg break; 872dd76986bSJohannes Berg case WLAN_EID_SUPP_RATES: 873dd76986bSJohannes Berg elems->supp_rates = pos; 874dd76986bSJohannes Berg elems->supp_rates_len = elen; 875dd76986bSJohannes Berg break; 876dd76986bSJohannes Berg case WLAN_EID_DS_PARAMS: 8771cd8e88eSJohannes Berg if (elen >= 1) 878dd76986bSJohannes Berg elems->ds_params = pos; 8791cd8e88eSJohannes Berg else 8801cd8e88eSJohannes Berg elem_parse_failed = true; 881dd76986bSJohannes Berg break; 882dd76986bSJohannes Berg case WLAN_EID_TIM: 883dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_tim_ie)) { 884dd76986bSJohannes Berg elems->tim = (void *)pos; 885dd76986bSJohannes Berg elems->tim_len = elen; 886fcff4f10SPaul Stewart } else 887fcff4f10SPaul Stewart elem_parse_failed = true; 888dd76986bSJohannes Berg break; 889dd76986bSJohannes Berg case WLAN_EID_CHALLENGE: 890dd76986bSJohannes Berg elems->challenge = pos; 891dd76986bSJohannes Berg elems->challenge_len = elen; 892dd76986bSJohannes Berg break; 893dd76986bSJohannes Berg case WLAN_EID_VENDOR_SPECIFIC: 894dd76986bSJohannes Berg if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && 895dd76986bSJohannes Berg pos[2] == 0xf2) { 896dd76986bSJohannes Berg /* Microsoft OUI (00:50:F2) */ 897dd76986bSJohannes Berg 898dd76986bSJohannes Berg if (calc_crc) 899dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 900dd76986bSJohannes Berg 901441a33baSJohannes Berg if (elen >= 5 && pos[3] == 2) { 902dd76986bSJohannes Berg /* OUI Type 2 - WMM IE */ 903dd76986bSJohannes Berg if (pos[4] == 0) { 904dd76986bSJohannes Berg elems->wmm_info = pos; 905dd76986bSJohannes Berg elems->wmm_info_len = elen; 906dd76986bSJohannes Berg } else if (pos[4] == 1) { 907dd76986bSJohannes Berg elems->wmm_param = pos; 908dd76986bSJohannes Berg elems->wmm_param_len = elen; 909dd76986bSJohannes Berg } 910dd76986bSJohannes Berg } 911dd76986bSJohannes Berg } 912dd76986bSJohannes Berg break; 913dd76986bSJohannes Berg case WLAN_EID_RSN: 914dd76986bSJohannes Berg elems->rsn = pos; 915dd76986bSJohannes Berg elems->rsn_len = elen; 916dd76986bSJohannes Berg break; 917dd76986bSJohannes Berg case WLAN_EID_ERP_INFO: 9181946bed9SJohannes Berg if (elen >= 1) 919dd76986bSJohannes Berg elems->erp_info = pos; 9201946bed9SJohannes Berg else 9211946bed9SJohannes Berg elem_parse_failed = true; 922dd76986bSJohannes Berg break; 923dd76986bSJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 924dd76986bSJohannes Berg elems->ext_supp_rates = pos; 925dd76986bSJohannes Berg elems->ext_supp_rates_len = elen; 926dd76986bSJohannes Berg break; 927dd76986bSJohannes Berg case WLAN_EID_HT_CAPABILITY: 928dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_ht_cap)) 929dd76986bSJohannes Berg elems->ht_cap_elem = (void *)pos; 930fcff4f10SPaul Stewart else 931fcff4f10SPaul Stewart elem_parse_failed = true; 932dd76986bSJohannes Berg break; 933074d46d1SJohannes Berg case WLAN_EID_HT_OPERATION: 934074d46d1SJohannes Berg if (elen >= sizeof(struct ieee80211_ht_operation)) 935074d46d1SJohannes Berg elems->ht_operation = (void *)pos; 936fcff4f10SPaul Stewart else 937fcff4f10SPaul Stewart elem_parse_failed = true; 938dd76986bSJohannes Berg break; 939818255eaSMahesh Palivela case WLAN_EID_VHT_CAPABILITY: 940818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_cap)) 941818255eaSMahesh Palivela elems->vht_cap_elem = (void *)pos; 942818255eaSMahesh Palivela else 943818255eaSMahesh Palivela elem_parse_failed = true; 944818255eaSMahesh Palivela break; 945818255eaSMahesh Palivela case WLAN_EID_VHT_OPERATION: 946818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_operation)) 947818255eaSMahesh Palivela elems->vht_operation = (void *)pos; 948818255eaSMahesh Palivela else 949818255eaSMahesh Palivela elem_parse_failed = true; 950818255eaSMahesh Palivela break; 951bee7f586SJohannes Berg case WLAN_EID_OPMODE_NOTIF: 952bee7f586SJohannes Berg if (elen > 0) 953bee7f586SJohannes Berg elems->opmode_notif = pos; 954bee7f586SJohannes Berg else 955bee7f586SJohannes Berg elem_parse_failed = true; 956bee7f586SJohannes Berg break; 957dd76986bSJohannes Berg case WLAN_EID_MESH_ID: 958dd76986bSJohannes Berg elems->mesh_id = pos; 959dd76986bSJohannes Berg elems->mesh_id_len = elen; 960dd76986bSJohannes Berg break; 961dd76986bSJohannes Berg case WLAN_EID_MESH_CONFIG: 962dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_meshconf_ie)) 963dd76986bSJohannes Berg elems->mesh_config = (void *)pos; 964fcff4f10SPaul Stewart else 965fcff4f10SPaul Stewart elem_parse_failed = true; 966dd76986bSJohannes Berg break; 967dd76986bSJohannes Berg case WLAN_EID_PEER_MGMT: 968dd76986bSJohannes Berg elems->peering = pos; 969dd76986bSJohannes Berg elems->peering_len = elen; 970dd76986bSJohannes Berg break; 9713f52b7e3SMarco Porsch case WLAN_EID_MESH_AWAKE_WINDOW: 9723f52b7e3SMarco Porsch if (elen >= 2) 9733f52b7e3SMarco Porsch elems->awake_window = (void *)pos; 9743f52b7e3SMarco Porsch break; 975dd76986bSJohannes Berg case WLAN_EID_PREQ: 976dd76986bSJohannes Berg elems->preq = pos; 977dd76986bSJohannes Berg elems->preq_len = elen; 978dd76986bSJohannes Berg break; 979dd76986bSJohannes Berg case WLAN_EID_PREP: 980dd76986bSJohannes Berg elems->prep = pos; 981dd76986bSJohannes Berg elems->prep_len = elen; 982dd76986bSJohannes Berg break; 983dd76986bSJohannes Berg case WLAN_EID_PERR: 984dd76986bSJohannes Berg elems->perr = pos; 985dd76986bSJohannes Berg elems->perr_len = elen; 986dd76986bSJohannes Berg break; 987dd76986bSJohannes Berg case WLAN_EID_RANN: 988dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_rann_ie)) 989dd76986bSJohannes Berg elems->rann = (void *)pos; 990fcff4f10SPaul Stewart else 991fcff4f10SPaul Stewart elem_parse_failed = true; 992dd76986bSJohannes Berg break; 993dd76986bSJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 9945bc1420bSJohannes Berg if (elen != sizeof(struct ieee80211_channel_sw_ie)) { 9955bc1420bSJohannes Berg elem_parse_failed = true; 9965bc1420bSJohannes Berg break; 9975bc1420bSJohannes Berg } 9985bc1420bSJohannes Berg elems->ch_switch_ie = (void *)pos; 999dd76986bSJohannes Berg break; 1000b4f286a1SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 1001b4f286a1SJohannes Berg if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { 1002b4f286a1SJohannes Berg elem_parse_failed = true; 1003b4f286a1SJohannes Berg break; 1004b4f286a1SJohannes Berg } 1005b4f286a1SJohannes Berg elems->ext_chansw_ie = (void *)pos; 1006b4f286a1SJohannes Berg break; 100785220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 100885220d71SJohannes Berg if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { 100985220d71SJohannes Berg elem_parse_failed = true; 101085220d71SJohannes Berg break; 101185220d71SJohannes Berg } 101285220d71SJohannes Berg elems->sec_chan_offs = (void *)pos; 101385220d71SJohannes Berg break; 10148f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 10158f2535b9SChun-Yeow Yeoh if (elen != 10168f2535b9SChun-Yeow Yeoh sizeof(*elems->mesh_chansw_params_ie)) { 10178f2535b9SChun-Yeow Yeoh elem_parse_failed = true; 10188f2535b9SChun-Yeow Yeoh break; 10198f2535b9SChun-Yeow Yeoh } 10208f2535b9SChun-Yeow Yeoh elems->mesh_chansw_params_ie = (void *)pos; 10218f2535b9SChun-Yeow Yeoh break; 1022b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 1023b2e506bfSJohannes Berg if (!action || 1024b2e506bfSJohannes Berg elen != sizeof(*elems->wide_bw_chansw_ie)) { 1025b2e506bfSJohannes Berg elem_parse_failed = true; 1026b2e506bfSJohannes Berg break; 1027b2e506bfSJohannes Berg } 1028b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = (void *)pos; 1029b2e506bfSJohannes Berg break; 1030b2e506bfSJohannes Berg case WLAN_EID_CHANNEL_SWITCH_WRAPPER: 1031b2e506bfSJohannes Berg if (action) { 1032b2e506bfSJohannes Berg elem_parse_failed = true; 1033b2e506bfSJohannes Berg break; 1034b2e506bfSJohannes Berg } 1035b2e506bfSJohannes Berg /* 1036b2e506bfSJohannes Berg * This is a bit tricky, but as we only care about 1037b2e506bfSJohannes Berg * the wide bandwidth channel switch element, so 1038b2e506bfSJohannes Berg * just parse it out manually. 1039b2e506bfSJohannes Berg */ 1040b2e506bfSJohannes Berg ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, 1041b2e506bfSJohannes Berg pos, elen); 1042b2e506bfSJohannes Berg if (ie) { 1043b2e506bfSJohannes Berg if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) 1044b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = 1045b2e506bfSJohannes Berg (void *)(ie + 2); 1046b2e506bfSJohannes Berg else 1047b2e506bfSJohannes Berg elem_parse_failed = true; 1048b2e506bfSJohannes Berg } 1049b2e506bfSJohannes Berg break; 1050dd76986bSJohannes Berg case WLAN_EID_COUNTRY: 1051dd76986bSJohannes Berg elems->country_elem = pos; 1052dd76986bSJohannes Berg elems->country_elem_len = elen; 1053dd76986bSJohannes Berg break; 1054dd76986bSJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 1055761a48d2SJohannes Berg if (elen != 1) { 1056761a48d2SJohannes Berg elem_parse_failed = true; 1057761a48d2SJohannes Berg break; 1058761a48d2SJohannes Berg } 1059dd76986bSJohannes Berg elems->pwr_constr_elem = pos; 1060dd76986bSJohannes Berg break; 1061c8d65917SSteinar H. Gunderson case WLAN_EID_CISCO_VENDOR_SPECIFIC: 1062c8d65917SSteinar H. Gunderson /* Lots of different options exist, but we only care 1063c8d65917SSteinar H. Gunderson * about the Dynamic Transmit Power Control element. 1064c8d65917SSteinar H. Gunderson * First check for the Cisco OUI, then for the DTPC 1065c8d65917SSteinar H. Gunderson * tag (0x00). 1066c8d65917SSteinar H. Gunderson */ 1067c8d65917SSteinar H. Gunderson if (elen < 4) { 1068c8d65917SSteinar H. Gunderson elem_parse_failed = true; 1069c8d65917SSteinar H. Gunderson break; 1070c8d65917SSteinar H. Gunderson } 1071c8d65917SSteinar H. Gunderson 1072c8d65917SSteinar H. Gunderson if (pos[0] != 0x00 || pos[1] != 0x40 || 1073c8d65917SSteinar H. Gunderson pos[2] != 0x96 || pos[3] != 0x00) 1074c8d65917SSteinar H. Gunderson break; 1075c8d65917SSteinar H. Gunderson 1076c8d65917SSteinar H. Gunderson if (elen != 6) { 1077c8d65917SSteinar H. Gunderson elem_parse_failed = true; 1078c8d65917SSteinar H. Gunderson break; 1079c8d65917SSteinar H. Gunderson } 1080c8d65917SSteinar H. Gunderson 1081c8d65917SSteinar H. Gunderson if (calc_crc) 1082c8d65917SSteinar H. Gunderson crc = crc32_be(crc, pos - 2, elen + 2); 1083c8d65917SSteinar H. Gunderson 1084c8d65917SSteinar H. Gunderson elems->cisco_dtpc_elem = pos; 1085c8d65917SSteinar H. Gunderson break; 1086dd76986bSJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 108779ba1d89SJohannes Berg if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) 108879ba1d89SJohannes Berg elems->timeout_int = (void *)pos; 108979ba1d89SJohannes Berg else 109079ba1d89SJohannes Berg elem_parse_failed = true; 1091dd76986bSJohannes Berg break; 1092dd76986bSJohannes Berg default: 1093dd76986bSJohannes Berg break; 1094dd76986bSJohannes Berg } 1095dd76986bSJohannes Berg 1096fcff4f10SPaul Stewart if (elem_parse_failed) 1097fcff4f10SPaul Stewart elems->parse_error = true; 1098fcff4f10SPaul Stewart else 10995df45690SJohannes Berg __set_bit(id, seen_elems); 1100fcff4f10SPaul Stewart 1101dd76986bSJohannes Berg left -= elen; 1102dd76986bSJohannes Berg pos += elen; 1103dd76986bSJohannes Berg } 1104dd76986bSJohannes Berg 1105fcff4f10SPaul Stewart if (left != 0) 1106fcff4f10SPaul Stewart elems->parse_error = true; 1107fcff4f10SPaul Stewart 1108dd76986bSJohannes Berg return crc; 1109dd76986bSJohannes Berg } 1110dd76986bSJohannes Berg 11113abead59SJohannes Berg void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1112cec66283SJohannes Berg bool bss_notify, bool enable_qos) 11135825fe10SJohannes Berg { 11145825fe10SJohannes Berg struct ieee80211_local *local = sdata->local; 11155825fe10SJohannes Berg struct ieee80211_tx_queue_params qparam; 111655de908aSJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 111754bcbc69SJohannes Berg int ac; 1118cec66283SJohannes Berg bool use_11b; 1119239281f8SRostislav Lisovy bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1120aa837e1dSJohannes Berg int aCWmin, aCWmax; 11215825fe10SJohannes Berg 11225825fe10SJohannes Berg if (!local->ops->conf_tx) 11235825fe10SJohannes Berg return; 11245825fe10SJohannes Berg 112554bcbc69SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 112654bcbc69SJohannes Berg return; 112754bcbc69SJohannes Berg 11285825fe10SJohannes Berg memset(&qparam, 0, sizeof(qparam)); 11295825fe10SJohannes Berg 113055de908aSJohannes Berg rcu_read_lock(); 113155de908aSJohannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 113255de908aSJohannes Berg use_11b = (chanctx_conf && 113357fbcce3SJohannes Berg chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1134aa837e1dSJohannes Berg !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); 113555de908aSJohannes Berg rcu_read_unlock(); 11365825fe10SJohannes Berg 1137239281f8SRostislav Lisovy is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1138239281f8SRostislav Lisovy 1139aa837e1dSJohannes Berg /* Set defaults according to 802.11-2007 Table 7-37 */ 1140aa837e1dSJohannes Berg aCWmax = 1023; 1141aa837e1dSJohannes Berg if (use_11b) 1142aa837e1dSJohannes Berg aCWmin = 31; 11435825fe10SJohannes Berg else 1144aa837e1dSJohannes Berg aCWmin = 15; 11455825fe10SJohannes Berg 11461f4ffde8SFred Zhou /* Confiure old 802.11b/g medium access rules. */ 11471f4ffde8SFred Zhou qparam.cw_max = aCWmax; 11481f4ffde8SFred Zhou qparam.cw_min = aCWmin; 11491f4ffde8SFred Zhou qparam.txop = 0; 11501f4ffde8SFred Zhou qparam.aifs = 2; 11511f4ffde8SFred Zhou 11521f4ffde8SFred Zhou for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 11531f4ffde8SFred Zhou /* Update if QoS is enabled. */ 1154a8ce8544SStanislaw Gruszka if (enable_qos) { 115554bcbc69SJohannes Berg switch (ac) { 11561d98fb12SJohannes Berg case IEEE80211_AC_BK: 11577ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 11587ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 11595825fe10SJohannes Berg qparam.txop = 0; 1160239281f8SRostislav Lisovy if (is_ocb) 1161239281f8SRostislav Lisovy qparam.aifs = 9; 1162239281f8SRostislav Lisovy else 1163aa837e1dSJohannes Berg qparam.aifs = 7; 1164aa837e1dSJohannes Berg break; 1165a8ce8544SStanislaw Gruszka /* never happens but let's not leave undefined */ 1166a8ce8544SStanislaw Gruszka default: 11671d98fb12SJohannes Berg case IEEE80211_AC_BE: 11687ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 11697ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 1170aa837e1dSJohannes Berg qparam.txop = 0; 1171239281f8SRostislav Lisovy if (is_ocb) 1172239281f8SRostislav Lisovy qparam.aifs = 6; 1173239281f8SRostislav Lisovy else 1174aa837e1dSJohannes Berg qparam.aifs = 3; 1175aa837e1dSJohannes Berg break; 11761d98fb12SJohannes Berg case IEEE80211_AC_VI: 1177aa837e1dSJohannes Berg qparam.cw_max = aCWmin; 1178aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 2 - 1; 1179239281f8SRostislav Lisovy if (is_ocb) 1180239281f8SRostislav Lisovy qparam.txop = 0; 1181239281f8SRostislav Lisovy else if (use_11b) 1182aa837e1dSJohannes Berg qparam.txop = 6016/32; 1183aa837e1dSJohannes Berg else 1184aa837e1dSJohannes Berg qparam.txop = 3008/32; 1185239281f8SRostislav Lisovy 1186239281f8SRostislav Lisovy if (is_ocb) 1187239281f8SRostislav Lisovy qparam.aifs = 3; 1188239281f8SRostislav Lisovy else 1189aa837e1dSJohannes Berg qparam.aifs = 2; 1190aa837e1dSJohannes Berg break; 11911d98fb12SJohannes Berg case IEEE80211_AC_VO: 1192aa837e1dSJohannes Berg qparam.cw_max = (aCWmin + 1) / 2 - 1; 1193aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 4 - 1; 1194239281f8SRostislav Lisovy if (is_ocb) 1195239281f8SRostislav Lisovy qparam.txop = 0; 1196239281f8SRostislav Lisovy else if (use_11b) 1197aa837e1dSJohannes Berg qparam.txop = 3264/32; 1198aa837e1dSJohannes Berg else 1199aa837e1dSJohannes Berg qparam.txop = 1504/32; 1200aa837e1dSJohannes Berg qparam.aifs = 2; 1201aa837e1dSJohannes Berg break; 1202aa837e1dSJohannes Berg } 1203a8ce8544SStanislaw Gruszka } 12045825fe10SJohannes Berg 1205ab13315aSKalle Valo qparam.uapsd = false; 1206ab13315aSKalle Valo 120754bcbc69SJohannes Berg sdata->tx_conf[ac] = qparam; 120854bcbc69SJohannes Berg drv_conf_tx(local, sdata, ac, &qparam); 1209aa837e1dSJohannes Berg } 1210e1b3ec1aSStanislaw Gruszka 1211f142c6b9SJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1212708d50edSAyala Beker sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1213708d50edSAyala Beker sdata->vif.type != NL80211_IFTYPE_NAN) { 1214a8ce8544SStanislaw Gruszka sdata->vif.bss_conf.qos = enable_qos; 12153abead59SJohannes Berg if (bss_notify) 12163abead59SJohannes Berg ieee80211_bss_info_change_notify(sdata, 12173abead59SJohannes Berg BSS_CHANGED_QOS); 12185825fe10SJohannes Berg } 1219d9734979SSujith } 1220e50db65cSJohannes Berg 122146900298SJohannes Berg void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1222700e8ea6SJouni Malinen u16 transaction, u16 auth_alg, u16 status, 12234a3cb702SJohannes Berg const u8 *extra, size_t extra_len, const u8 *da, 12241672c0e3SJohannes Berg const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 12251672c0e3SJohannes Berg u32 tx_flags) 122646900298SJohannes Berg { 122746900298SJohannes Berg struct ieee80211_local *local = sdata->local; 122846900298SJohannes Berg struct sk_buff *skb; 122946900298SJohannes Berg struct ieee80211_mgmt *mgmt; 1230fffd0934SJohannes Berg int err; 123146900298SJohannes Berg 123215e230abSFred Zhou /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1233744462a9SMax Stepanov skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1234744462a9SMax Stepanov 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); 1235d15b8459SJoe Perches if (!skb) 123646900298SJohannes Berg return; 1237d15b8459SJoe Perches 1238744462a9SMax Stepanov skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 123946900298SJohannes Berg 124046900298SJohannes Berg mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); 124146900298SJohannes Berg memset(mgmt, 0, 24 + 6); 124246900298SJohannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 124346900298SJohannes Berg IEEE80211_STYPE_AUTH); 1244efa6a09dSAntonio Quartulli memcpy(mgmt->da, da, ETH_ALEN); 124547846c9bSJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 124646900298SJohannes Berg memcpy(mgmt->bssid, bssid, ETH_ALEN); 124746900298SJohannes Berg mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 124846900298SJohannes Berg mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1249700e8ea6SJouni Malinen mgmt->u.auth.status_code = cpu_to_le16(status); 125046900298SJohannes Berg if (extra) 125146900298SJohannes Berg memcpy(skb_put(skb, extra_len), extra, extra_len); 125246900298SJohannes Berg 1253fffd0934SJohannes Berg if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1254fffd0934SJohannes Berg mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1255fffd0934SJohannes Berg err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1256fffd0934SJohannes Berg WARN_ON(err); 1257fffd0934SJohannes Berg } 1258fffd0934SJohannes Berg 12591672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 12601672c0e3SJohannes Berg tx_flags; 126162ae67beSJohannes Berg ieee80211_tx_skb(sdata, skb); 126246900298SJohannes Berg } 126346900298SJohannes Berg 12646ae16775SAntonio Quartulli void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 12656ae16775SAntonio Quartulli const u8 *bssid, u16 stype, u16 reason, 12666ae16775SAntonio Quartulli bool send_frame, u8 *frame_buf) 12676ae16775SAntonio Quartulli { 12686ae16775SAntonio Quartulli struct ieee80211_local *local = sdata->local; 12696ae16775SAntonio Quartulli struct sk_buff *skb; 12706ae16775SAntonio Quartulli struct ieee80211_mgmt *mgmt = (void *)frame_buf; 12716ae16775SAntonio Quartulli 12726ae16775SAntonio Quartulli /* build frame */ 12736ae16775SAntonio Quartulli mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 12746ae16775SAntonio Quartulli mgmt->duration = 0; /* initialize only */ 12756ae16775SAntonio Quartulli mgmt->seq_ctrl = 0; /* initialize only */ 12766ae16775SAntonio Quartulli memcpy(mgmt->da, bssid, ETH_ALEN); 12776ae16775SAntonio Quartulli memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 12786ae16775SAntonio Quartulli memcpy(mgmt->bssid, bssid, ETH_ALEN); 12796ae16775SAntonio Quartulli /* u.deauth.reason_code == u.disassoc.reason_code */ 12806ae16775SAntonio Quartulli mgmt->u.deauth.reason_code = cpu_to_le16(reason); 12816ae16775SAntonio Quartulli 12826ae16775SAntonio Quartulli if (send_frame) { 12836ae16775SAntonio Quartulli skb = dev_alloc_skb(local->hw.extra_tx_headroom + 12846ae16775SAntonio Quartulli IEEE80211_DEAUTH_FRAME_LEN); 12856ae16775SAntonio Quartulli if (!skb) 12866ae16775SAntonio Quartulli return; 12876ae16775SAntonio Quartulli 12886ae16775SAntonio Quartulli skb_reserve(skb, local->hw.extra_tx_headroom); 12896ae16775SAntonio Quartulli 12906ae16775SAntonio Quartulli /* copy in frame */ 12916ae16775SAntonio Quartulli memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), 12926ae16775SAntonio Quartulli mgmt, IEEE80211_DEAUTH_FRAME_LEN); 12936ae16775SAntonio Quartulli 12946ae16775SAntonio Quartulli if (sdata->vif.type != NL80211_IFTYPE_STATION || 12956ae16775SAntonio Quartulli !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 12966ae16775SAntonio Quartulli IEEE80211_SKB_CB(skb)->flags |= 12976ae16775SAntonio Quartulli IEEE80211_TX_INTFL_DONT_ENCRYPT; 12986ae16775SAntonio Quartulli 12996ae16775SAntonio Quartulli ieee80211_tx_skb(sdata, skb); 13006ae16775SAntonio Quartulli } 13016ae16775SAntonio Quartulli } 13026ae16775SAntonio Quartulli 1303c56ef672SDavid Spinadel static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, 1304c56ef672SDavid Spinadel u8 *buffer, size_t buffer_len, 1305c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 130657fbcce3SJohannes Berg enum nl80211_band band, 1307c56ef672SDavid Spinadel u32 rate_mask, 1308c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef, 1309c56ef672SDavid Spinadel size_t *offset) 1310de95a54bSJohannes Berg { 1311de95a54bSJohannes Berg struct ieee80211_supported_band *sband; 1312c604b9f2SJohannes Berg u8 *pos = buffer, *end = buffer + buffer_len; 1313c56ef672SDavid Spinadel size_t noffset; 13148e664fb3SJohannes Berg int supp_rates_len, i; 13158dcb2003SJouni Malinen u8 rates[32]; 13168dcb2003SJouni Malinen int num_rates; 13178dcb2003SJouni Malinen int ext_rates_len; 13182103dec1SSimon Wunderlich int shift; 13192103dec1SSimon Wunderlich u32 rate_flags; 132040a11ca8SJohannes Berg bool have_80mhz = false; 1321de95a54bSJohannes Berg 1322c56ef672SDavid Spinadel *offset = 0; 1323c56ef672SDavid Spinadel 13244d36ec58SJohannes Berg sband = local->hw.wiphy->bands[band]; 1325d811b3d5SArik Nemtsov if (WARN_ON_ONCE(!sband)) 1326d811b3d5SArik Nemtsov return 0; 1327de95a54bSJohannes Berg 13282103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(chandef); 13292103dec1SSimon Wunderlich shift = ieee80211_chandef_get_shift(chandef); 13302103dec1SSimon Wunderlich 13318dcb2003SJouni Malinen num_rates = 0; 13328dcb2003SJouni Malinen for (i = 0; i < sband->n_bitrates; i++) { 13338dcb2003SJouni Malinen if ((BIT(i) & rate_mask) == 0) 13348dcb2003SJouni Malinen continue; /* skip rate */ 13352103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 13362103dec1SSimon Wunderlich continue; 13372103dec1SSimon Wunderlich 13382103dec1SSimon Wunderlich rates[num_rates++] = 13392103dec1SSimon Wunderlich (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 13402103dec1SSimon Wunderlich (1 << shift) * 5); 13418dcb2003SJouni Malinen } 13428dcb2003SJouni Malinen 13438dcb2003SJouni Malinen supp_rates_len = min_t(int, num_rates, 8); 13448e664fb3SJohannes Berg 1345c604b9f2SJohannes Berg if (end - pos < 2 + supp_rates_len) 1346c604b9f2SJohannes Berg goto out_err; 1347de95a54bSJohannes Berg *pos++ = WLAN_EID_SUPP_RATES; 13488e664fb3SJohannes Berg *pos++ = supp_rates_len; 13498dcb2003SJouni Malinen memcpy(pos, rates, supp_rates_len); 13508dcb2003SJouni Malinen pos += supp_rates_len; 1351de95a54bSJohannes Berg 13528e664fb3SJohannes Berg /* insert "request information" if in custom IEs */ 13538e664fb3SJohannes Berg if (ie && ie_len) { 13548e664fb3SJohannes Berg static const u8 before_extrates[] = { 13558e664fb3SJohannes Berg WLAN_EID_SSID, 13568e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 13578e664fb3SJohannes Berg WLAN_EID_REQUEST, 13588e664fb3SJohannes Berg }; 13598e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 13608e664fb3SJohannes Berg before_extrates, 13618e664fb3SJohannes Berg ARRAY_SIZE(before_extrates), 1362c56ef672SDavid Spinadel *offset); 1363c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1364c604b9f2SJohannes Berg goto out_err; 1365c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1366c56ef672SDavid Spinadel pos += noffset - *offset; 1367c56ef672SDavid Spinadel *offset = noffset; 13688e664fb3SJohannes Berg } 13698e664fb3SJohannes Berg 13708dcb2003SJouni Malinen ext_rates_len = num_rates - supp_rates_len; 13718dcb2003SJouni Malinen if (ext_rates_len > 0) { 1372c604b9f2SJohannes Berg if (end - pos < 2 + ext_rates_len) 1373c604b9f2SJohannes Berg goto out_err; 1374de95a54bSJohannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 13758dcb2003SJouni Malinen *pos++ = ext_rates_len; 13768dcb2003SJouni Malinen memcpy(pos, rates + supp_rates_len, ext_rates_len); 13778dcb2003SJouni Malinen pos += ext_rates_len; 13788e664fb3SJohannes Berg } 13798e664fb3SJohannes Berg 138057fbcce3SJohannes Berg if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1381c604b9f2SJohannes Berg if (end - pos < 3) 1382c604b9f2SJohannes Berg goto out_err; 1383651b5225SJouni Malinen *pos++ = WLAN_EID_DS_PARAMS; 1384651b5225SJouni Malinen *pos++ = 1; 13852103dec1SSimon Wunderlich *pos++ = ieee80211_frequency_to_channel( 13862103dec1SSimon Wunderlich chandef->chan->center_freq); 1387651b5225SJouni Malinen } 1388651b5225SJouni Malinen 13898e664fb3SJohannes Berg /* insert custom IEs that go before HT */ 13908e664fb3SJohannes Berg if (ie && ie_len) { 13918e664fb3SJohannes Berg static const u8 before_ht[] = { 13928e664fb3SJohannes Berg WLAN_EID_SSID, 13938e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 13948e664fb3SJohannes Berg WLAN_EID_REQUEST, 13958e664fb3SJohannes Berg WLAN_EID_EXT_SUPP_RATES, 13968e664fb3SJohannes Berg WLAN_EID_DS_PARAMS, 13978e664fb3SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 13988e664fb3SJohannes Berg }; 13998e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 14008e664fb3SJohannes Berg before_ht, ARRAY_SIZE(before_ht), 1401c56ef672SDavid Spinadel *offset); 1402c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1403c604b9f2SJohannes Berg goto out_err; 1404c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1405c56ef672SDavid Spinadel pos += noffset - *offset; 1406c56ef672SDavid Spinadel *offset = noffset; 1407de95a54bSJohannes Berg } 1408de95a54bSJohannes Berg 1409c604b9f2SJohannes Berg if (sband->ht_cap.ht_supported) { 1410c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) 1411c604b9f2SJohannes Berg goto out_err; 1412ef96a842SBen Greear pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1413ef96a842SBen Greear sband->ht_cap.cap); 1414c604b9f2SJohannes Berg } 14155ef2d41aSJohannes Berg 1416de95a54bSJohannes Berg /* 1417de95a54bSJohannes Berg * If adding more here, adjust code in main.c 1418de95a54bSJohannes Berg * that calculates local->scan_ies_len. 1419de95a54bSJohannes Berg */ 1420de95a54bSJohannes Berg 14214d952300SJohannes Berg /* insert custom IEs that go before VHT */ 14228e664fb3SJohannes Berg if (ie && ie_len) { 14234d952300SJohannes Berg static const u8 before_vht[] = { 14244d952300SJohannes Berg WLAN_EID_SSID, 14254d952300SJohannes Berg WLAN_EID_SUPP_RATES, 14264d952300SJohannes Berg WLAN_EID_REQUEST, 14274d952300SJohannes Berg WLAN_EID_EXT_SUPP_RATES, 14284d952300SJohannes Berg WLAN_EID_DS_PARAMS, 14294d952300SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 14304d952300SJohannes Berg WLAN_EID_HT_CAPABILITY, 14314d952300SJohannes Berg WLAN_EID_BSS_COEX_2040, 14324d952300SJohannes Berg WLAN_EID_EXT_CAPABILITY, 14334d952300SJohannes Berg WLAN_EID_SSID_LIST, 14344d952300SJohannes Berg WLAN_EID_CHANNEL_USAGE, 14354d952300SJohannes Berg WLAN_EID_INTERWORKING, 14364d952300SJohannes Berg /* mesh ID can't happen here */ 14374d952300SJohannes Berg /* 60 GHz can't happen here right now */ 14384d952300SJohannes Berg }; 14394d952300SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 14404d952300SJohannes Berg before_vht, ARRAY_SIZE(before_vht), 1441c56ef672SDavid Spinadel *offset); 1442c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1443c604b9f2SJohannes Berg goto out_err; 1444c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1445c56ef672SDavid Spinadel pos += noffset - *offset; 1446c56ef672SDavid Spinadel *offset = noffset; 1447de95a54bSJohannes Berg } 1448de95a54bSJohannes Berg 144940a11ca8SJohannes Berg /* Check if any channel in this sband supports at least 80 MHz */ 145040a11ca8SJohannes Berg for (i = 0; i < sband->n_channels; i++) { 1451fa44b988SArik Nemtsov if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1452fa44b988SArik Nemtsov IEEE80211_CHAN_NO_80MHZ)) 1453fa44b988SArik Nemtsov continue; 1454fa44b988SArik Nemtsov 145540a11ca8SJohannes Berg have_80mhz = true; 145640a11ca8SJohannes Berg break; 145740a11ca8SJohannes Berg } 145840a11ca8SJohannes Berg 145940a11ca8SJohannes Berg if (sband->vht_cap.vht_supported && have_80mhz) { 1460c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) 1461c604b9f2SJohannes Berg goto out_err; 1462ba0afa2fSMahesh Palivela pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1463ba0afa2fSMahesh Palivela sband->vht_cap.cap); 1464c604b9f2SJohannes Berg } 1465ba0afa2fSMahesh Palivela 1466de95a54bSJohannes Berg return pos - buffer; 1467c604b9f2SJohannes Berg out_err: 1468c604b9f2SJohannes Berg WARN_ONCE(1, "not enough space for preq IEs\n"); 1469c604b9f2SJohannes Berg return pos - buffer; 1470de95a54bSJohannes Berg } 1471de95a54bSJohannes Berg 1472c56ef672SDavid Spinadel int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1473c56ef672SDavid Spinadel size_t buffer_len, 1474c56ef672SDavid Spinadel struct ieee80211_scan_ies *ie_desc, 1475c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 1476c56ef672SDavid Spinadel u8 bands_used, u32 *rate_masks, 1477c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef) 1478c56ef672SDavid Spinadel { 1479c56ef672SDavid Spinadel size_t pos = 0, old_pos = 0, custom_ie_offset = 0; 1480c56ef672SDavid Spinadel int i; 1481c56ef672SDavid Spinadel 1482c56ef672SDavid Spinadel memset(ie_desc, 0, sizeof(*ie_desc)); 1483c56ef672SDavid Spinadel 148457fbcce3SJohannes Berg for (i = 0; i < NUM_NL80211_BANDS; i++) { 1485c56ef672SDavid Spinadel if (bands_used & BIT(i)) { 1486c56ef672SDavid Spinadel pos += ieee80211_build_preq_ies_band(local, 1487c56ef672SDavid Spinadel buffer + pos, 1488c56ef672SDavid Spinadel buffer_len - pos, 1489c56ef672SDavid Spinadel ie, ie_len, i, 1490c56ef672SDavid Spinadel rate_masks[i], 1491c56ef672SDavid Spinadel chandef, 1492c56ef672SDavid Spinadel &custom_ie_offset); 1493c56ef672SDavid Spinadel ie_desc->ies[i] = buffer + old_pos; 1494c56ef672SDavid Spinadel ie_desc->len[i] = pos - old_pos; 1495c56ef672SDavid Spinadel old_pos = pos; 1496c56ef672SDavid Spinadel } 1497c56ef672SDavid Spinadel } 1498c56ef672SDavid Spinadel 1499c56ef672SDavid Spinadel /* add any remaining custom IEs */ 1500c56ef672SDavid Spinadel if (ie && ie_len) { 1501c56ef672SDavid Spinadel if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, 1502c56ef672SDavid Spinadel "not enough space for preq custom IEs\n")) 1503c56ef672SDavid Spinadel return pos; 1504c56ef672SDavid Spinadel memcpy(buffer + pos, ie + custom_ie_offset, 1505c56ef672SDavid Spinadel ie_len - custom_ie_offset); 1506c56ef672SDavid Spinadel ie_desc->common_ies = buffer + pos; 1507c56ef672SDavid Spinadel ie_desc->common_ie_len = ie_len - custom_ie_offset; 1508c56ef672SDavid Spinadel pos += ie_len - custom_ie_offset; 1509c56ef672SDavid Spinadel } 1510c56ef672SDavid Spinadel 1511c56ef672SDavid Spinadel return pos; 1512c56ef672SDavid Spinadel }; 1513c56ef672SDavid Spinadel 1514a619a4c0SJuuso Oikarinen struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1515a344d677SJohannes Berg const u8 *src, const u8 *dst, 1516a344d677SJohannes Berg u32 ratemask, 15176b77863bSJohannes Berg struct ieee80211_channel *chan, 1518de95a54bSJohannes Berg const u8 *ssid, size_t ssid_len, 1519a806c558SPaul Stewart const u8 *ie, size_t ie_len, 1520a806c558SPaul Stewart bool directed) 152146900298SJohannes Berg { 152246900298SJohannes Berg struct ieee80211_local *local = sdata->local; 15232103dec1SSimon Wunderlich struct cfg80211_chan_def chandef; 152446900298SJohannes Berg struct sk_buff *skb; 152546900298SJohannes Berg struct ieee80211_mgmt *mgmt; 1526b9a9ada1SJohannes Berg int ies_len; 152757fbcce3SJohannes Berg u32 rate_masks[NUM_NL80211_BANDS] = {}; 1528c56ef672SDavid Spinadel struct ieee80211_scan_ies dummy_ie_desc; 152946900298SJohannes Berg 1530a806c558SPaul Stewart /* 1531a806c558SPaul Stewart * Do not send DS Channel parameter for directed probe requests 1532a806c558SPaul Stewart * in order to maximize the chance that we get a response. Some 1533a806c558SPaul Stewart * badly-behaved APs don't respond when this parameter is included. 1534a806c558SPaul Stewart */ 15352103dec1SSimon Wunderlich chandef.width = sdata->vif.bss_conf.chandef.width; 1536a806c558SPaul Stewart if (directed) 15372103dec1SSimon Wunderlich chandef.chan = NULL; 1538a806c558SPaul Stewart else 15392103dec1SSimon Wunderlich chandef.chan = chan; 1540651b5225SJouni Malinen 1541a344d677SJohannes Berg skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1542a344d677SJohannes Berg 100 + ie_len); 15435b2bbf75SJohannes Berg if (!skb) 1544b9a9ada1SJohannes Berg return NULL; 1545b9a9ada1SJohannes Berg 1546c56ef672SDavid Spinadel rate_masks[chan->band] = ratemask; 1547b9a9ada1SJohannes Berg ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), 1548c56ef672SDavid Spinadel skb_tailroom(skb), &dummy_ie_desc, 1549c56ef672SDavid Spinadel ie, ie_len, BIT(chan->band), 1550c56ef672SDavid Spinadel rate_masks, &chandef); 1551b9a9ada1SJohannes Berg skb_put(skb, ies_len); 15527c12ce8bSKalle Valo 155346900298SJohannes Berg if (dst) { 15547c12ce8bSKalle Valo mgmt = (struct ieee80211_mgmt *) skb->data; 155546900298SJohannes Berg memcpy(mgmt->da, dst, ETH_ALEN); 155646900298SJohannes Berg memcpy(mgmt->bssid, dst, ETH_ALEN); 155746900298SJohannes Berg } 155846900298SJohannes Berg 155962ae67beSJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 15605b2bbf75SJohannes Berg 1561a619a4c0SJuuso Oikarinen return skb; 1562a619a4c0SJuuso Oikarinen } 1563a619a4c0SJuuso Oikarinen 1564a344d677SJohannes Berg void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1565a344d677SJohannes Berg const u8 *src, const u8 *dst, 1566a619a4c0SJuuso Oikarinen const u8 *ssid, size_t ssid_len, 1567a806c558SPaul Stewart const u8 *ie, size_t ie_len, 15681672c0e3SJohannes Berg u32 ratemask, bool directed, u32 tx_flags, 156955de908aSJohannes Berg struct ieee80211_channel *channel, bool scan) 1570a619a4c0SJuuso Oikarinen { 1571a619a4c0SJuuso Oikarinen struct sk_buff *skb; 1572a619a4c0SJuuso Oikarinen 1573a344d677SJohannes Berg skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, 15746b77863bSJohannes Berg ssid, ssid_len, 157585a237feSJohannes Berg ie, ie_len, directed); 1576aad14cebSRajkumar Manoharan if (skb) { 15771672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= tx_flags; 157855de908aSJohannes Berg if (scan) 157955de908aSJohannes Berg ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); 158055de908aSJohannes Berg else 1581a619a4c0SJuuso Oikarinen ieee80211_tx_skb(sdata, skb); 158246900298SJohannes Berg } 1583aad14cebSRajkumar Manoharan } 158446900298SJohannes Berg 15852103dec1SSimon Wunderlich u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 158646900298SJohannes Berg struct ieee802_11_elems *elems, 158757fbcce3SJohannes Berg enum nl80211_band band, u32 *basic_rates) 158846900298SJohannes Berg { 158946900298SJohannes Berg struct ieee80211_supported_band *sband; 159046900298SJohannes Berg size_t num_rates; 15912103dec1SSimon Wunderlich u32 supp_rates, rate_flags; 15922103dec1SSimon Wunderlich int i, j, shift; 15932103dec1SSimon Wunderlich sband = sdata->local->hw.wiphy->bands[band]; 15942103dec1SSimon Wunderlich 15952103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 15962103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 159746900298SJohannes Berg 15984ee73f33SMichal Kazior if (WARN_ON(!sband)) 15994ee73f33SMichal Kazior return 1; 160046900298SJohannes Berg 160146900298SJohannes Berg num_rates = sband->n_bitrates; 160246900298SJohannes Berg supp_rates = 0; 160346900298SJohannes Berg for (i = 0; i < elems->supp_rates_len + 160446900298SJohannes Berg elems->ext_supp_rates_len; i++) { 160546900298SJohannes Berg u8 rate = 0; 160646900298SJohannes Berg int own_rate; 16079ebb61a2SAshok Nagarajan bool is_basic; 160846900298SJohannes Berg if (i < elems->supp_rates_len) 160946900298SJohannes Berg rate = elems->supp_rates[i]; 161046900298SJohannes Berg else if (elems->ext_supp_rates) 161146900298SJohannes Berg rate = elems->ext_supp_rates 161246900298SJohannes Berg [i - elems->supp_rates_len]; 161346900298SJohannes Berg own_rate = 5 * (rate & 0x7f); 16149ebb61a2SAshok Nagarajan is_basic = !!(rate & 0x80); 16159ebb61a2SAshok Nagarajan 16169ebb61a2SAshok Nagarajan if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 16179ebb61a2SAshok Nagarajan continue; 16189ebb61a2SAshok Nagarajan 16199ebb61a2SAshok Nagarajan for (j = 0; j < num_rates; j++) { 16202103dec1SSimon Wunderlich int brate; 16212103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[j].flags) 16222103dec1SSimon Wunderlich != rate_flags) 16232103dec1SSimon Wunderlich continue; 16242103dec1SSimon Wunderlich 16252103dec1SSimon Wunderlich brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, 16262103dec1SSimon Wunderlich 1 << shift); 16272103dec1SSimon Wunderlich 16282103dec1SSimon Wunderlich if (brate == own_rate) { 162946900298SJohannes Berg supp_rates |= BIT(j); 16309ebb61a2SAshok Nagarajan if (basic_rates && is_basic) 16319ebb61a2SAshok Nagarajan *basic_rates |= BIT(j); 16329ebb61a2SAshok Nagarajan } 16339ebb61a2SAshok Nagarajan } 163446900298SJohannes Berg } 163546900298SJohannes Berg return supp_rates; 163646900298SJohannes Berg } 1637f2753ddbSJohannes Berg 163884f6a01cSJohannes Berg void ieee80211_stop_device(struct ieee80211_local *local) 163984f6a01cSJohannes Berg { 164084f6a01cSJohannes Berg ieee80211_led_radio(local, false); 164167408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 164284f6a01cSJohannes Berg 164384f6a01cSJohannes Berg cancel_work_sync(&local->reconfig_filter); 164484f6a01cSJohannes Berg 164584f6a01cSJohannes Berg flush_workqueue(local->workqueue); 1646678f415fSLennert Buytenhek drv_stop(local); 164784f6a01cSJohannes Berg } 164884f6a01cSJohannes Berg 164974430f94SJohannes Berg static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 165074430f94SJohannes Berg bool aborted) 165174430f94SJohannes Berg { 165274430f94SJohannes Berg /* It's possible that we don't handle the scan completion in 165374430f94SJohannes Berg * time during suspend, so if it's still marked as completed 165474430f94SJohannes Berg * here, queue the work and flush it to clean things up. 165574430f94SJohannes Berg * Instead of calling the worker function directly here, we 165674430f94SJohannes Berg * really queue it to avoid potential races with other flows 165774430f94SJohannes Berg * scheduling the same work. 165874430f94SJohannes Berg */ 165974430f94SJohannes Berg if (test_bit(SCAN_COMPLETED, &local->scanning)) { 166074430f94SJohannes Berg /* If coming from reconfiguration failure, abort the scan so 166174430f94SJohannes Berg * we don't attempt to continue a partial HW scan - which is 166274430f94SJohannes Berg * possible otherwise if (e.g.) the 2.4 GHz portion was the 166374430f94SJohannes Berg * completed scan, and a 5 GHz portion is still pending. 166474430f94SJohannes Berg */ 166574430f94SJohannes Berg if (aborted) 166674430f94SJohannes Berg set_bit(SCAN_ABORTED, &local->scanning); 166774430f94SJohannes Berg ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); 166874430f94SJohannes Berg flush_delayed_work(&local->scan_work); 166974430f94SJohannes Berg } 167074430f94SJohannes Berg } 167174430f94SJohannes Berg 1672f6837ba8SJohannes Berg static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1673f6837ba8SJohannes Berg { 1674f6837ba8SJohannes Berg struct ieee80211_sub_if_data *sdata; 1675f6837ba8SJohannes Berg struct ieee80211_chanctx *ctx; 1676f6837ba8SJohannes Berg 1677f6837ba8SJohannes Berg /* 1678f6837ba8SJohannes Berg * We get here if during resume the device can't be restarted properly. 1679f6837ba8SJohannes Berg * We might also get here if this happens during HW reset, which is a 1680f6837ba8SJohannes Berg * slightly different situation and we need to drop all connections in 1681f6837ba8SJohannes Berg * the latter case. 1682f6837ba8SJohannes Berg * 1683f6837ba8SJohannes Berg * Ask cfg80211 to turn off all interfaces, this will result in more 1684f6837ba8SJohannes Berg * warnings but at least we'll then get into a clean stopped state. 1685f6837ba8SJohannes Berg */ 1686f6837ba8SJohannes Berg 1687f6837ba8SJohannes Berg local->resuming = false; 1688f6837ba8SJohannes Berg local->suspended = false; 16897584f88fSEliad Peller local->in_reconfig = false; 1690f6837ba8SJohannes Berg 169174430f94SJohannes Berg ieee80211_flush_completed_scan(local, true); 169274430f94SJohannes Berg 1693f6837ba8SJohannes Berg /* scheduled scan clearly can't be running any more, but tell 1694f6837ba8SJohannes Berg * cfg80211 and clear local state 1695f6837ba8SJohannes Berg */ 1696f6837ba8SJohannes Berg ieee80211_sched_scan_end(local); 1697f6837ba8SJohannes Berg 1698f6837ba8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) 1699f6837ba8SJohannes Berg sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1700f6837ba8SJohannes Berg 1701f6837ba8SJohannes Berg /* Mark channel contexts as not being in the driver any more to avoid 1702f6837ba8SJohannes Berg * removing them from the driver during the shutdown process... 1703f6837ba8SJohannes Berg */ 1704f6837ba8SJohannes Berg mutex_lock(&local->chanctx_mtx); 1705f6837ba8SJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 1706f6837ba8SJohannes Berg ctx->driver_present = false; 1707f6837ba8SJohannes Berg mutex_unlock(&local->chanctx_mtx); 1708f6837ba8SJohannes Berg 1709f6837ba8SJohannes Berg cfg80211_shutdown_all_interfaces(local->hw.wiphy); 1710f6837ba8SJohannes Berg } 1711f6837ba8SJohannes Berg 1712153a5fc4SStanislaw Gruszka static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1713153a5fc4SStanislaw Gruszka struct ieee80211_sub_if_data *sdata) 1714153a5fc4SStanislaw Gruszka { 1715153a5fc4SStanislaw Gruszka struct ieee80211_chanctx_conf *conf; 1716153a5fc4SStanislaw Gruszka struct ieee80211_chanctx *ctx; 1717153a5fc4SStanislaw Gruszka 1718153a5fc4SStanislaw Gruszka if (!local->use_chanctx) 1719153a5fc4SStanislaw Gruszka return; 1720153a5fc4SStanislaw Gruszka 1721153a5fc4SStanislaw Gruszka mutex_lock(&local->chanctx_mtx); 1722153a5fc4SStanislaw Gruszka conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 1723153a5fc4SStanislaw Gruszka lockdep_is_held(&local->chanctx_mtx)); 1724153a5fc4SStanislaw Gruszka if (conf) { 1725153a5fc4SStanislaw Gruszka ctx = container_of(conf, struct ieee80211_chanctx, conf); 1726153a5fc4SStanislaw Gruszka drv_assign_vif_chanctx(local, sdata, ctx); 1727153a5fc4SStanislaw Gruszka } 1728153a5fc4SStanislaw Gruszka mutex_unlock(&local->chanctx_mtx); 1729153a5fc4SStanislaw Gruszka } 1730153a5fc4SStanislaw Gruszka 17311ea2c864SJohannes Berg static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 17321ea2c864SJohannes Berg { 17331ea2c864SJohannes Berg struct ieee80211_local *local = sdata->local; 17341ea2c864SJohannes Berg struct sta_info *sta; 17351ea2c864SJohannes Berg 17361ea2c864SJohannes Berg /* add STAs back */ 17371ea2c864SJohannes Berg mutex_lock(&local->sta_mtx); 17381ea2c864SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 17391ea2c864SJohannes Berg enum ieee80211_sta_state state; 17401ea2c864SJohannes Berg 17411ea2c864SJohannes Berg if (!sta->uploaded || sta->sdata != sdata) 17421ea2c864SJohannes Berg continue; 17431ea2c864SJohannes Berg 17441ea2c864SJohannes Berg for (state = IEEE80211_STA_NOTEXIST; 17451ea2c864SJohannes Berg state < sta->sta_state; state++) 17461ea2c864SJohannes Berg WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 17471ea2c864SJohannes Berg state + 1)); 17481ea2c864SJohannes Berg } 17491ea2c864SJohannes Berg mutex_unlock(&local->sta_mtx); 17501ea2c864SJohannes Berg } 17511ea2c864SJohannes Berg 1752167e33f4SAyala Beker static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1753167e33f4SAyala Beker { 1754167e33f4SAyala Beker struct cfg80211_nan_func *func, **funcs; 1755167e33f4SAyala Beker int res, id, i = 0; 1756167e33f4SAyala Beker 1757167e33f4SAyala Beker res = drv_start_nan(sdata->local, sdata, 1758167e33f4SAyala Beker &sdata->u.nan.conf); 1759167e33f4SAyala Beker if (WARN_ON(res)) 1760167e33f4SAyala Beker return res; 1761167e33f4SAyala Beker 1762167e33f4SAyala Beker funcs = kzalloc((sdata->local->hw.max_nan_de_entries + 1) * 1763167e33f4SAyala Beker sizeof(*funcs), GFP_KERNEL); 1764167e33f4SAyala Beker if (!funcs) 1765167e33f4SAyala Beker return -ENOMEM; 1766167e33f4SAyala Beker 1767167e33f4SAyala Beker /* Add all the functions: 1768167e33f4SAyala Beker * This is a little bit ugly. We need to call a potentially sleeping 1769167e33f4SAyala Beker * callback for each NAN function, so we can't hold the spinlock. 1770167e33f4SAyala Beker */ 1771167e33f4SAyala Beker spin_lock_bh(&sdata->u.nan.func_lock); 1772167e33f4SAyala Beker 1773167e33f4SAyala Beker idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1774167e33f4SAyala Beker funcs[i++] = func; 1775167e33f4SAyala Beker 1776167e33f4SAyala Beker spin_unlock_bh(&sdata->u.nan.func_lock); 1777167e33f4SAyala Beker 1778167e33f4SAyala Beker for (i = 0; funcs[i]; i++) { 1779167e33f4SAyala Beker res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1780167e33f4SAyala Beker if (WARN_ON(res)) 1781167e33f4SAyala Beker ieee80211_nan_func_terminated(&sdata->vif, 1782167e33f4SAyala Beker funcs[i]->instance_id, 1783167e33f4SAyala Beker NL80211_NAN_FUNC_TERM_REASON_ERROR, 1784167e33f4SAyala Beker GFP_KERNEL); 1785167e33f4SAyala Beker } 1786167e33f4SAyala Beker 1787167e33f4SAyala Beker kfree(funcs); 1788167e33f4SAyala Beker 1789167e33f4SAyala Beker return 0; 1790167e33f4SAyala Beker } 1791167e33f4SAyala Beker 1792f2753ddbSJohannes Berg int ieee80211_reconfig(struct ieee80211_local *local) 1793f2753ddbSJohannes Berg { 1794f2753ddbSJohannes Berg struct ieee80211_hw *hw = &local->hw; 1795f2753ddbSJohannes Berg struct ieee80211_sub_if_data *sdata; 179655de908aSJohannes Berg struct ieee80211_chanctx *ctx; 1797f2753ddbSJohannes Berg struct sta_info *sta; 17982683d65bSEliad Peller int res, i; 1799d888130aSJohannes Berg bool reconfig_due_to_wowlan = false; 1800d43c6b6eSDavid Spinadel struct ieee80211_sub_if_data *sched_scan_sdata; 18016ea0a69cSJohannes Berg struct cfg80211_sched_scan_request *sched_scan_req; 1802d43c6b6eSDavid Spinadel bool sched_scan_stopped = false; 1803b0485e9fSEliad Peller bool suspended = local->suspended; 1804d888130aSJohannes Berg 18050f8b8245SEliad Peller /* nothing to do if HW shouldn't run */ 18060f8b8245SEliad Peller if (!local->open_count) 18070f8b8245SEliad Peller goto wake_up; 18080f8b8245SEliad Peller 18098f21b0adSJohannes Berg #ifdef CONFIG_PM 1810b0485e9fSEliad Peller if (suspended) 1811ceb99fe0SJohannes Berg local->resuming = true; 1812f2753ddbSJohannes Berg 1813eecc4800SJohannes Berg if (local->wowlan) { 1814b0485e9fSEliad Peller /* 1815b0485e9fSEliad Peller * In the wowlan case, both mac80211 and the device 1816b0485e9fSEliad Peller * are functional when the resume op is called, so 1817b0485e9fSEliad Peller * clear local->suspended so the device could operate 1818b0485e9fSEliad Peller * normally (e.g. pass rx frames). 1819b0485e9fSEliad Peller */ 1820b0485e9fSEliad Peller local->suspended = false; 1821eecc4800SJohannes Berg res = drv_resume(local); 182227b3eb9cSJohannes Berg local->wowlan = false; 1823eecc4800SJohannes Berg if (res < 0) { 1824eecc4800SJohannes Berg local->resuming = false; 1825eecc4800SJohannes Berg return res; 1826eecc4800SJohannes Berg } 1827eecc4800SJohannes Berg if (res == 0) 1828eecc4800SJohannes Berg goto wake_up; 1829eecc4800SJohannes Berg WARN_ON(res > 1); 1830eecc4800SJohannes Berg /* 1831eecc4800SJohannes Berg * res is 1, which means the driver requested 1832eecc4800SJohannes Berg * to go through a regular reset on wakeup. 1833b0485e9fSEliad Peller * restore local->suspended in this case. 1834eecc4800SJohannes Berg */ 1835d888130aSJohannes Berg reconfig_due_to_wowlan = true; 1836b0485e9fSEliad Peller local->suspended = true; 1837eecc4800SJohannes Berg } 1838eecc4800SJohannes Berg #endif 183994f9b97bSJohannes Berg 184024feda00SLuis R. Rodriguez /* 184143d6df00SEliad Peller * In case of hw_restart during suspend (without wowlan), 184243d6df00SEliad Peller * cancel restart work, as we are reconfiguring the device 184343d6df00SEliad Peller * anyway. 184443d6df00SEliad Peller * Note that restart_work is scheduled on a frozen workqueue, 184543d6df00SEliad Peller * so we can't deadlock in this case. 184643d6df00SEliad Peller */ 184743d6df00SEliad Peller if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 184843d6df00SEliad Peller cancel_work_sync(&local->restart_work); 184943d6df00SEliad Peller 1850968a76ceSEliad Peller local->started = false; 1851968a76ceSEliad Peller 185243d6df00SEliad Peller /* 185324feda00SLuis R. Rodriguez * Upon resume hardware can sometimes be goofy due to 185424feda00SLuis R. Rodriguez * various platform / driver / bus issues, so restarting 185524feda00SLuis R. Rodriguez * the device may at times not work immediately. Propagate 185624feda00SLuis R. Rodriguez * the error. 185724feda00SLuis R. Rodriguez */ 185824487981SJohannes Berg res = drv_start(local); 185924feda00SLuis R. Rodriguez if (res) { 1860b0485e9fSEliad Peller if (suspended) 1861f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1862f6837ba8SJohannes Berg else 1863f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable during restart.\n"); 1864f6837ba8SJohannes Berg ieee80211_handle_reconfig_failure(local); 186524feda00SLuis R. Rodriguez return res; 186624feda00SLuis R. Rodriguez } 1867f2753ddbSJohannes Berg 18687f281975SYogesh Ashok Powar /* setup fragmentation threshold */ 18697f281975SYogesh Ashok Powar drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 18707f281975SYogesh Ashok Powar 18717f281975SYogesh Ashok Powar /* setup RTS threshold */ 18727f281975SYogesh Ashok Powar drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 18737f281975SYogesh Ashok Powar 18747f281975SYogesh Ashok Powar /* reset coverage class */ 18757f281975SYogesh Ashok Powar drv_set_coverage_class(local, hw->wiphy->coverage_class); 18767f281975SYogesh Ashok Powar 18771f87f7d3SJohannes Berg ieee80211_led_radio(local, true); 187867408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 187967408c8cSJohannes Berg IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1880f2753ddbSJohannes Berg 1881f2753ddbSJohannes Berg /* add interfaces */ 18824b6f1dd6SJohannes Berg sdata = rtnl_dereference(local->monitor_sdata); 18834b6f1dd6SJohannes Berg if (sdata) { 18843c3e21e7SJohannes Berg /* in HW restart it exists already */ 18853c3e21e7SJohannes Berg WARN_ON(local->resuming); 18864b6f1dd6SJohannes Berg res = drv_add_interface(local, sdata); 18874b6f1dd6SJohannes Berg if (WARN_ON(res)) { 18880c2bef46SMonam Agarwal RCU_INIT_POINTER(local->monitor_sdata, NULL); 18894b6f1dd6SJohannes Berg synchronize_net(); 18904b6f1dd6SJohannes Berg kfree(sdata); 18914b6f1dd6SJohannes Berg } 18924b6f1dd6SJohannes Berg } 18934b6f1dd6SJohannes Berg 1894f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1895f2753ddbSJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1896f2753ddbSJohannes Berg sdata->vif.type != NL80211_IFTYPE_MONITOR && 1897c8fff3dcSLuciano Coelho ieee80211_sdata_running(sdata)) { 18987b7eab6fSJohannes Berg res = drv_add_interface(local, sdata); 1899c8fff3dcSLuciano Coelho if (WARN_ON(res)) 1900c8fff3dcSLuciano Coelho break; 1901c8fff3dcSLuciano Coelho } 1902c8fff3dcSLuciano Coelho } 1903c8fff3dcSLuciano Coelho 1904c8fff3dcSLuciano Coelho /* If adding any of the interfaces failed above, roll back and 1905c8fff3dcSLuciano Coelho * report failure. 1906c8fff3dcSLuciano Coelho */ 1907c8fff3dcSLuciano Coelho if (res) { 1908c8fff3dcSLuciano Coelho list_for_each_entry_continue_reverse(sdata, &local->interfaces, 1909c8fff3dcSLuciano Coelho list) 1910c8fff3dcSLuciano Coelho if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1911c8fff3dcSLuciano Coelho sdata->vif.type != NL80211_IFTYPE_MONITOR && 1912c8fff3dcSLuciano Coelho ieee80211_sdata_running(sdata)) 1913c8fff3dcSLuciano Coelho drv_remove_interface(local, sdata); 1914c8fff3dcSLuciano Coelho ieee80211_handle_reconfig_failure(local); 1915c8fff3dcSLuciano Coelho return res; 1916f2753ddbSJohannes Berg } 1917f2753ddbSJohannes Berg 191855de908aSJohannes Berg /* add channel contexts */ 1919f0dea9c7SArend van Spriel if (local->use_chanctx) { 192055de908aSJohannes Berg mutex_lock(&local->chanctx_mtx); 192155de908aSJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 19225bcae31dSMichal Kazior if (ctx->replace_state != 19235bcae31dSMichal Kazior IEEE80211_CHANCTX_REPLACES_OTHER) 192455de908aSJohannes Berg WARN_ON(drv_add_chanctx(local, ctx)); 192555de908aSJohannes Berg mutex_unlock(&local->chanctx_mtx); 192655de908aSJohannes Berg 1927fe5f2559SJohannes Berg sdata = rtnl_dereference(local->monitor_sdata); 1928153a5fc4SStanislaw Gruszka if (sdata && ieee80211_sdata_running(sdata)) 1929153a5fc4SStanislaw Gruszka ieee80211_assign_chanctx(local, sdata); 19307df180f7SZhao, Gang } 1931fe5f2559SJohannes Berg 1932f2753ddbSJohannes Berg /* reconfigure hardware */ 1933f2753ddbSJohannes Berg ieee80211_hw_config(local, ~0); 1934f2753ddbSJohannes Berg 1935f2753ddbSJohannes Berg ieee80211_configure_filter(local); 1936f2753ddbSJohannes Berg 1937f2753ddbSJohannes Berg /* Finally also reconfigure all the BSS information */ 1938f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1939ac8dd506SJohannes Berg u32 changed; 1940ac8dd506SJohannes Berg 19419607e6b6SJohannes Berg if (!ieee80211_sdata_running(sdata)) 1942f2753ddbSJohannes Berg continue; 1943ac8dd506SJohannes Berg 19441ea2c864SJohannes Berg ieee80211_assign_chanctx(local, sdata); 19451ea2c864SJohannes Berg 19461ea2c864SJohannes Berg switch (sdata->vif.type) { 19471ea2c864SJohannes Berg case NL80211_IFTYPE_AP_VLAN: 19481ea2c864SJohannes Berg case NL80211_IFTYPE_MONITOR: 19491ea2c864SJohannes Berg break; 19501ea2c864SJohannes Berg default: 19511ea2c864SJohannes Berg ieee80211_reconfig_stations(sdata); 19521ea2c864SJohannes Berg /* fall through */ 19531ea2c864SJohannes Berg case NL80211_IFTYPE_AP: /* AP stations are handled later */ 19541ea2c864SJohannes Berg for (i = 0; i < IEEE80211_NUM_ACS; i++) 19551ea2c864SJohannes Berg drv_conf_tx(local, sdata, i, 19561ea2c864SJohannes Berg &sdata->tx_conf[i]); 19571ea2c864SJohannes Berg break; 19581ea2c864SJohannes Berg } 19591ea2c864SJohannes Berg 1960ac8dd506SJohannes Berg /* common change flags for all interface types */ 1961ac8dd506SJohannes Berg changed = BSS_CHANGED_ERP_CTS_PROT | 1962ac8dd506SJohannes Berg BSS_CHANGED_ERP_PREAMBLE | 1963ac8dd506SJohannes Berg BSS_CHANGED_ERP_SLOT | 1964ac8dd506SJohannes Berg BSS_CHANGED_HT | 1965ac8dd506SJohannes Berg BSS_CHANGED_BASIC_RATES | 1966ac8dd506SJohannes Berg BSS_CHANGED_BEACON_INT | 1967ac8dd506SJohannes Berg BSS_CHANGED_BSSID | 19684ced3f74SJohannes Berg BSS_CHANGED_CQM | 196955de47f6SEliad Peller BSS_CHANGED_QOS | 19701ea6f9c0SJohannes Berg BSS_CHANGED_IDLE | 19711ea6f9c0SJohannes Berg BSS_CHANGED_TXPOWER; 1972ac8dd506SJohannes Berg 1973b5a33d52SSara Sharon if (sdata->vif.mu_mimo_owner) 197423a1f8d4SSara Sharon changed |= BSS_CHANGED_MU_GROUPS; 197523a1f8d4SSara Sharon 1976f2753ddbSJohannes Berg switch (sdata->vif.type) { 1977f2753ddbSJohannes Berg case NL80211_IFTYPE_STATION: 19780d392e93SEliad Peller changed |= BSS_CHANGED_ASSOC | 1979ab095877SEliad Peller BSS_CHANGED_ARP_FILTER | 1980ab095877SEliad Peller BSS_CHANGED_PS; 1981c65dd147SEmmanuel Grumbach 1982989c6505SAlexander Bondar /* Re-send beacon info report to the driver */ 1983989c6505SAlexander Bondar if (sdata->u.mgd.have_beacon) 1984989c6505SAlexander Bondar changed |= BSS_CHANGED_BEACON_INFO; 1985c65dd147SEmmanuel Grumbach 19868d61ffa5SJohannes Berg sdata_lock(sdata); 1987ac8dd506SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 19888d61ffa5SJohannes Berg sdata_unlock(sdata); 1989ac8dd506SJohannes Berg break; 19906e0bd6c3SRostislav Lisovy case NL80211_IFTYPE_OCB: 1991239281f8SRostislav Lisovy changed |= BSS_CHANGED_OCB; 1992239281f8SRostislav Lisovy ieee80211_bss_info_change_notify(sdata, changed); 19936e0bd6c3SRostislav Lisovy break; 1994f2753ddbSJohannes Berg case NL80211_IFTYPE_ADHOC: 1995ac8dd506SJohannes Berg changed |= BSS_CHANGED_IBSS; 1996ac8dd506SJohannes Berg /* fall through */ 1997f2753ddbSJohannes Berg case NL80211_IFTYPE_AP: 1998339afbf4SJohannes Berg changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; 1999e7979ac7SArik Nemtsov 20001041638fSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP) { 2001e7979ac7SArik Nemtsov changed |= BSS_CHANGED_AP_PROBE_RESP; 2002e7979ac7SArik Nemtsov 20031041638fSJohannes Berg if (rcu_access_pointer(sdata->u.ap.beacon)) 20041041638fSJohannes Berg drv_start_ap(local, sdata); 20051041638fSJohannes Berg } 20061041638fSJohannes Berg 20077827493bSArik Nemtsov /* fall through */ 2008f2753ddbSJohannes Berg case NL80211_IFTYPE_MESH_POINT: 20098da34932SJohannes Berg if (sdata->vif.bss_conf.enable_beacon) { 2010ac8dd506SJohannes Berg changed |= BSS_CHANGED_BEACON | 2011ac8dd506SJohannes Berg BSS_CHANGED_BEACON_ENABLED; 20122d0ddec5SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 20138da34932SJohannes Berg } 2014f2753ddbSJohannes Berg break; 2015167e33f4SAyala Beker case NL80211_IFTYPE_NAN: 2016167e33f4SAyala Beker res = ieee80211_reconfig_nan(sdata); 2017167e33f4SAyala Beker if (res < 0) { 2018167e33f4SAyala Beker ieee80211_handle_reconfig_failure(local); 2019167e33f4SAyala Beker return res; 2020167e33f4SAyala Beker } 2021167e33f4SAyala Beker break; 2022f2753ddbSJohannes Berg case NL80211_IFTYPE_WDS: 2023f2753ddbSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 2024f2753ddbSJohannes Berg case NL80211_IFTYPE_MONITOR: 202598104fdeSJohannes Berg case NL80211_IFTYPE_P2P_DEVICE: 2026b205786eSZhao, Gang /* nothing to do */ 2027f142c6b9SJohannes Berg break; 2028f2753ddbSJohannes Berg case NL80211_IFTYPE_UNSPECIFIED: 20292e161f78SJohannes Berg case NUM_NL80211_IFTYPES: 20302ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_CLIENT: 20312ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_GO: 2032f2753ddbSJohannes Berg WARN_ON(1); 2033f2753ddbSJohannes Berg break; 2034f2753ddbSJohannes Berg } 2035f2753ddbSJohannes Berg } 2036f2753ddbSJohannes Berg 20374a733ef1SJohannes Berg ieee80211_recalc_ps(local); 20388e1b23b9SEyal Shapira 20392a419056SJohannes Berg /* 20406e1b1b24SEliad Peller * The sta might be in psm against the ap (e.g. because 20416e1b1b24SEliad Peller * this was the state before a hw restart), so we 20426e1b1b24SEliad Peller * explicitly send a null packet in order to make sure 20436e1b1b24SEliad Peller * it'll sync against the ap (and get out of psm). 20446e1b1b24SEliad Peller */ 20456e1b1b24SEliad Peller if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 20466e1b1b24SEliad Peller list_for_each_entry(sdata, &local->interfaces, list) { 20476e1b1b24SEliad Peller if (sdata->vif.type != NL80211_IFTYPE_STATION) 20486e1b1b24SEliad Peller continue; 204920f544eeSJohannes Berg if (!sdata->u.mgd.associated) 205020f544eeSJohannes Berg continue; 20516e1b1b24SEliad Peller 2052076cdcb1SJohannes Berg ieee80211_send_nullfunc(local, sdata, false); 20536e1b1b24SEliad Peller } 20546e1b1b24SEliad Peller } 20556e1b1b24SEliad Peller 20562e8d397eSArik Nemtsov /* APs are now beaconing, add back stations */ 20572e8d397eSArik Nemtsov mutex_lock(&local->sta_mtx); 20582e8d397eSArik Nemtsov list_for_each_entry(sta, &local->sta_list, list) { 20592e8d397eSArik Nemtsov enum ieee80211_sta_state state; 20602e8d397eSArik Nemtsov 20612e8d397eSArik Nemtsov if (!sta->uploaded) 20622e8d397eSArik Nemtsov continue; 20632e8d397eSArik Nemtsov 20642e8d397eSArik Nemtsov if (sta->sdata->vif.type != NL80211_IFTYPE_AP) 20652e8d397eSArik Nemtsov continue; 20662e8d397eSArik Nemtsov 20672e8d397eSArik Nemtsov for (state = IEEE80211_STA_NOTEXIST; 20682e8d397eSArik Nemtsov state < sta->sta_state; state++) 20692e8d397eSArik Nemtsov WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 20702e8d397eSArik Nemtsov state + 1)); 20712e8d397eSArik Nemtsov } 20722e8d397eSArik Nemtsov mutex_unlock(&local->sta_mtx); 20732e8d397eSArik Nemtsov 20747b21aea0SEyal Shapira /* add back keys */ 20757b21aea0SEyal Shapira list_for_each_entry(sdata, &local->interfaces, list) 2076f9dca80bSMichal Kazior ieee80211_reset_crypto_tx_tailroom(sdata); 2077f9dca80bSMichal Kazior 2078f9dca80bSMichal Kazior list_for_each_entry(sdata, &local->interfaces, list) 20797b21aea0SEyal Shapira if (ieee80211_sdata_running(sdata)) 20807b21aea0SEyal Shapira ieee80211_enable_keys(sdata); 20817b21aea0SEyal Shapira 20820d440ea2SEliad Peller /* Reconfigure sched scan if it was interrupted by FW restart */ 20830d440ea2SEliad Peller mutex_lock(&local->mtx); 20840d440ea2SEliad Peller sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 20850d440ea2SEliad Peller lockdep_is_held(&local->mtx)); 20860d440ea2SEliad Peller sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 20870d440ea2SEliad Peller lockdep_is_held(&local->mtx)); 20880d440ea2SEliad Peller if (sched_scan_sdata && sched_scan_req) 20890d440ea2SEliad Peller /* 20900d440ea2SEliad Peller * Sched scan stopped, but we don't want to report it. Instead, 20910d440ea2SEliad Peller * we're trying to reschedule. However, if more than one scan 20920d440ea2SEliad Peller * plan was set, we cannot reschedule since we don't know which 20930d440ea2SEliad Peller * scan plan was currently running (and some scan plans may have 20940d440ea2SEliad Peller * already finished). 20950d440ea2SEliad Peller */ 20960d440ea2SEliad Peller if (sched_scan_req->n_scan_plans > 1 || 20970d440ea2SEliad Peller __ieee80211_request_sched_scan_start(sched_scan_sdata, 2098b9f628fcSEliad Peller sched_scan_req)) { 2099b9f628fcSEliad Peller RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2100b9f628fcSEliad Peller RCU_INIT_POINTER(local->sched_scan_req, NULL); 21010d440ea2SEliad Peller sched_scan_stopped = true; 2102b9f628fcSEliad Peller } 21030d440ea2SEliad Peller mutex_unlock(&local->mtx); 21040d440ea2SEliad Peller 21050d440ea2SEliad Peller if (sched_scan_stopped) 21060d440ea2SEliad Peller cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); 21070d440ea2SEliad Peller 2108c6209488SEliad Peller wake_up: 2109470f4d61SEliad Peller if (local->in_reconfig) { 211004800adaSArik Nemtsov local->in_reconfig = false; 211104800adaSArik Nemtsov barrier(); 211204800adaSArik Nemtsov 2113470f4d61SEliad Peller /* Restart deferred ROCs */ 2114470f4d61SEliad Peller mutex_lock(&local->mtx); 2115470f4d61SEliad Peller ieee80211_start_next_roc(local); 2116470f4d61SEliad Peller mutex_unlock(&local->mtx); 2117470f4d61SEliad Peller } 2118470f4d61SEliad Peller 21193c3e21e7SJohannes Berg if (local->monitors == local->open_count && local->monitors > 0) 21203c3e21e7SJohannes Berg ieee80211_add_virtual_monitor(local); 21213c3e21e7SJohannes Berg 21226e1b1b24SEliad Peller /* 21232a419056SJohannes Berg * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 21242a419056SJohannes Berg * sessions can be established after a resume. 21252a419056SJohannes Berg * 21262a419056SJohannes Berg * Also tear down aggregation sessions since reconfiguring 21272a419056SJohannes Berg * them in a hardware restart scenario is not easily done 21282a419056SJohannes Berg * right now, and the hardware will have lost information 21292a419056SJohannes Berg * about the sessions, but we and the AP still think they 21302a419056SJohannes Berg * are active. This is really a workaround though. 21312a419056SJohannes Berg */ 213230686bf7SJohannes Berg if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 21332a419056SJohannes Berg mutex_lock(&local->sta_mtx); 21342a419056SJohannes Berg 21352a419056SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 213627392719SEliad Peller if (!local->resuming) 2137c82c4a80SJohannes Berg ieee80211_sta_tear_down_BA_sessions( 2138c82c4a80SJohannes Berg sta, AGG_STOP_LOCAL_REQUEST); 2139c2c98fdeSJohannes Berg clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 214074e2bd1fSWey-Yi Guy } 21412a419056SJohannes Berg 21422a419056SJohannes Berg mutex_unlock(&local->sta_mtx); 214374e2bd1fSWey-Yi Guy } 214474e2bd1fSWey-Yi Guy 2145445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2146cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2147cca07b00SLuciano Coelho false); 2148f2753ddbSJohannes Berg 21495bb644a0SJohannes Berg /* 21505bb644a0SJohannes Berg * If this is for hw restart things are still running. 21515bb644a0SJohannes Berg * We may want to change that later, however. 21525bb644a0SJohannes Berg */ 2153b0485e9fSEliad Peller if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2154cf2c92d8SEliad Peller drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 21558f21b0adSJohannes Berg 2156b0485e9fSEliad Peller if (!suspended) 21575bb644a0SJohannes Berg return 0; 21585bb644a0SJohannes Berg 21595bb644a0SJohannes Berg #ifdef CONFIG_PM 2160ceb99fe0SJohannes Berg /* first set suspended false, then resuming */ 21615bb644a0SJohannes Berg local->suspended = false; 2162ceb99fe0SJohannes Berg mb(); 2163ceb99fe0SJohannes Berg local->resuming = false; 21645bb644a0SJohannes Berg 216574430f94SJohannes Berg ieee80211_flush_completed_scan(local, false); 21669120d94eSLuciano Coelho 21670f8b8245SEliad Peller if (local->open_count && !reconfig_due_to_wowlan) 2168cf2c92d8SEliad Peller drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2169cf2c92d8SEliad Peller 2170b8360ab8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 2171b8360ab8SJohannes Berg if (!ieee80211_sdata_running(sdata)) 2172b8360ab8SJohannes Berg continue; 2173b8360ab8SJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_STATION) 2174b8360ab8SJohannes Berg ieee80211_sta_restart(sdata); 2175b8360ab8SJohannes Berg } 2176b8360ab8SJohannes Berg 217726d59535SJohannes Berg mod_timer(&local->sta_cleanup, jiffies + 1); 21785bb644a0SJohannes Berg #else 21795bb644a0SJohannes Berg WARN_ON(1); 21805bb644a0SJohannes Berg #endif 2181d43c6b6eSDavid Spinadel 2182f2753ddbSJohannes Berg return 0; 2183f2753ddbSJohannes Berg } 218442935ecaSLuis R. Rodriguez 218595acac61SJohannes Berg void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 218695acac61SJohannes Berg { 218795acac61SJohannes Berg struct ieee80211_sub_if_data *sdata; 218895acac61SJohannes Berg struct ieee80211_local *local; 218995acac61SJohannes Berg struct ieee80211_key *key; 219095acac61SJohannes Berg 219195acac61SJohannes Berg if (WARN_ON(!vif)) 219295acac61SJohannes Berg return; 219395acac61SJohannes Berg 219495acac61SJohannes Berg sdata = vif_to_sdata(vif); 219595acac61SJohannes Berg local = sdata->local; 219695acac61SJohannes Berg 219795acac61SJohannes Berg if (WARN_ON(!local->resuming)) 219895acac61SJohannes Berg return; 219995acac61SJohannes Berg 220095acac61SJohannes Berg if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 220195acac61SJohannes Berg return; 220295acac61SJohannes Berg 220395acac61SJohannes Berg sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; 220495acac61SJohannes Berg 220595acac61SJohannes Berg mutex_lock(&local->key_mtx); 220695acac61SJohannes Berg list_for_each_entry(key, &sdata->key_list, list) 220795acac61SJohannes Berg key->flags |= KEY_FLAG_TAINTED; 220895acac61SJohannes Berg mutex_unlock(&local->key_mtx); 220995acac61SJohannes Berg } 221095acac61SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 221195acac61SJohannes Berg 221204ecd257SJohannes Berg void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) 22130f78231bSJohannes Berg { 221404ecd257SJohannes Berg struct ieee80211_local *local = sdata->local; 221504ecd257SJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 221604ecd257SJohannes Berg struct ieee80211_chanctx *chanctx; 22170f78231bSJohannes Berg 221804ecd257SJohannes Berg mutex_lock(&local->chanctx_mtx); 22190f78231bSJohannes Berg 222004ecd257SJohannes Berg chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 222104ecd257SJohannes Berg lockdep_is_held(&local->chanctx_mtx)); 22220f78231bSJohannes Berg 2223c189a685SAndrei Otcheretianski /* 2224c189a685SAndrei Otcheretianski * This function can be called from a work, thus it may be possible 2225c189a685SAndrei Otcheretianski * that the chanctx_conf is removed (due to a disconnection, for 2226c189a685SAndrei Otcheretianski * example). 2227c189a685SAndrei Otcheretianski * So nothing should be done in such case. 2228c189a685SAndrei Otcheretianski */ 2229c189a685SAndrei Otcheretianski if (!chanctx_conf) 22305d8e4237SJohannes Berg goto unlock; 22310f78231bSJohannes Berg 223204ecd257SJohannes Berg chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 223304ecd257SJohannes Berg ieee80211_recalc_smps_chanctx(local, chanctx); 22345d8e4237SJohannes Berg unlock: 223504ecd257SJohannes Berg mutex_unlock(&local->chanctx_mtx); 22360f78231bSJohannes Berg } 22378e664fb3SJohannes Berg 223821f659bfSEliad Peller void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) 223921f659bfSEliad Peller { 224021f659bfSEliad Peller struct ieee80211_local *local = sdata->local; 224121f659bfSEliad Peller struct ieee80211_chanctx_conf *chanctx_conf; 224221f659bfSEliad Peller struct ieee80211_chanctx *chanctx; 224321f659bfSEliad Peller 224421f659bfSEliad Peller mutex_lock(&local->chanctx_mtx); 224521f659bfSEliad Peller 224621f659bfSEliad Peller chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 224721f659bfSEliad Peller lockdep_is_held(&local->chanctx_mtx)); 224821f659bfSEliad Peller 224921f659bfSEliad Peller if (WARN_ON_ONCE(!chanctx_conf)) 225021f659bfSEliad Peller goto unlock; 225121f659bfSEliad Peller 225221f659bfSEliad Peller chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 225321f659bfSEliad Peller ieee80211_recalc_chanctx_min_def(local, chanctx); 225421f659bfSEliad Peller unlock: 225521f659bfSEliad Peller mutex_unlock(&local->chanctx_mtx); 225621f659bfSEliad Peller } 225721f659bfSEliad Peller 22588e664fb3SJohannes Berg size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 22598e664fb3SJohannes Berg { 22608e664fb3SJohannes Berg size_t pos = offset; 22618e664fb3SJohannes Berg 22628e664fb3SJohannes Berg while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 22638e664fb3SJohannes Berg pos += 2 + ies[pos + 1]; 22648e664fb3SJohannes Berg 22658e664fb3SJohannes Berg return pos; 22668e664fb3SJohannes Berg } 2267615f7b9bSMeenakshi Venkataraman 2268615f7b9bSMeenakshi Venkataraman static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, 2269615f7b9bSMeenakshi Venkataraman int rssi_min_thold, 2270615f7b9bSMeenakshi Venkataraman int rssi_max_thold) 2271615f7b9bSMeenakshi Venkataraman { 2272615f7b9bSMeenakshi Venkataraman trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); 2273615f7b9bSMeenakshi Venkataraman 2274615f7b9bSMeenakshi Venkataraman if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 2275615f7b9bSMeenakshi Venkataraman return; 2276615f7b9bSMeenakshi Venkataraman 2277615f7b9bSMeenakshi Venkataraman /* 2278615f7b9bSMeenakshi Venkataraman * Scale up threshold values before storing it, as the RSSI averaging 2279615f7b9bSMeenakshi Venkataraman * algorithm uses a scaled up value as well. Change this scaling 2280615f7b9bSMeenakshi Venkataraman * factor if the RSSI averaging algorithm changes. 2281615f7b9bSMeenakshi Venkataraman */ 2282615f7b9bSMeenakshi Venkataraman sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; 2283615f7b9bSMeenakshi Venkataraman sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; 2284615f7b9bSMeenakshi Venkataraman } 2285615f7b9bSMeenakshi Venkataraman 2286615f7b9bSMeenakshi Venkataraman void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 2287615f7b9bSMeenakshi Venkataraman int rssi_min_thold, 2288615f7b9bSMeenakshi Venkataraman int rssi_max_thold) 2289615f7b9bSMeenakshi Venkataraman { 2290615f7b9bSMeenakshi Venkataraman struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2291615f7b9bSMeenakshi Venkataraman 2292615f7b9bSMeenakshi Venkataraman WARN_ON(rssi_min_thold == rssi_max_thold || 2293615f7b9bSMeenakshi Venkataraman rssi_min_thold > rssi_max_thold); 2294615f7b9bSMeenakshi Venkataraman 2295615f7b9bSMeenakshi Venkataraman _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, 2296615f7b9bSMeenakshi Venkataraman rssi_max_thold); 2297615f7b9bSMeenakshi Venkataraman } 2298615f7b9bSMeenakshi Venkataraman EXPORT_SYMBOL(ieee80211_enable_rssi_reports); 2299615f7b9bSMeenakshi Venkataraman 2300615f7b9bSMeenakshi Venkataraman void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) 2301615f7b9bSMeenakshi Venkataraman { 2302615f7b9bSMeenakshi Venkataraman struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2303615f7b9bSMeenakshi Venkataraman 2304615f7b9bSMeenakshi Venkataraman _ieee80211_enable_rssi_reports(sdata, 0, 0); 2305615f7b9bSMeenakshi Venkataraman } 2306615f7b9bSMeenakshi Venkataraman EXPORT_SYMBOL(ieee80211_disable_rssi_reports); 2307768db343SArik Nemtsov 2308ef96a842SBen Greear u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 230942e7aa77SAlexander Simon u16 cap) 231042e7aa77SAlexander Simon { 231142e7aa77SAlexander Simon __le16 tmp; 231242e7aa77SAlexander Simon 231342e7aa77SAlexander Simon *pos++ = WLAN_EID_HT_CAPABILITY; 231442e7aa77SAlexander Simon *pos++ = sizeof(struct ieee80211_ht_cap); 231542e7aa77SAlexander Simon memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 231642e7aa77SAlexander Simon 231742e7aa77SAlexander Simon /* capability flags */ 231842e7aa77SAlexander Simon tmp = cpu_to_le16(cap); 231942e7aa77SAlexander Simon memcpy(pos, &tmp, sizeof(u16)); 232042e7aa77SAlexander Simon pos += sizeof(u16); 232142e7aa77SAlexander Simon 232242e7aa77SAlexander Simon /* AMPDU parameters */ 2323ef96a842SBen Greear *pos++ = ht_cap->ampdu_factor | 2324ef96a842SBen Greear (ht_cap->ampdu_density << 232542e7aa77SAlexander Simon IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 232642e7aa77SAlexander Simon 232742e7aa77SAlexander Simon /* MCS set */ 2328ef96a842SBen Greear memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2329ef96a842SBen Greear pos += sizeof(ht_cap->mcs); 233042e7aa77SAlexander Simon 233142e7aa77SAlexander Simon /* extended capabilities */ 233242e7aa77SAlexander Simon pos += sizeof(__le16); 233342e7aa77SAlexander Simon 233442e7aa77SAlexander Simon /* BF capabilities */ 233542e7aa77SAlexander Simon pos += sizeof(__le32); 233642e7aa77SAlexander Simon 233742e7aa77SAlexander Simon /* antenna selection */ 233842e7aa77SAlexander Simon pos += sizeof(u8); 233942e7aa77SAlexander Simon 234042e7aa77SAlexander Simon return pos; 234142e7aa77SAlexander Simon } 234242e7aa77SAlexander Simon 2343ba0afa2fSMahesh Palivela u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2344ba0afa2fSMahesh Palivela u32 cap) 2345ba0afa2fSMahesh Palivela { 2346ba0afa2fSMahesh Palivela __le32 tmp; 2347ba0afa2fSMahesh Palivela 2348ba0afa2fSMahesh Palivela *pos++ = WLAN_EID_VHT_CAPABILITY; 2349d4950281SMahesh Palivela *pos++ = sizeof(struct ieee80211_vht_cap); 2350d4950281SMahesh Palivela memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2351ba0afa2fSMahesh Palivela 2352ba0afa2fSMahesh Palivela /* capability flags */ 2353ba0afa2fSMahesh Palivela tmp = cpu_to_le32(cap); 2354ba0afa2fSMahesh Palivela memcpy(pos, &tmp, sizeof(u32)); 2355ba0afa2fSMahesh Palivela pos += sizeof(u32); 2356ba0afa2fSMahesh Palivela 2357ba0afa2fSMahesh Palivela /* VHT MCS set */ 2358ba0afa2fSMahesh Palivela memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2359ba0afa2fSMahesh Palivela pos += sizeof(vht_cap->vht_mcs); 2360ba0afa2fSMahesh Palivela 2361ba0afa2fSMahesh Palivela return pos; 2362ba0afa2fSMahesh Palivela } 2363ba0afa2fSMahesh Palivela 2364074d46d1SJohannes Berg u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 23654bf88530SJohannes Berg const struct cfg80211_chan_def *chandef, 236657f255f5SArik Nemtsov u16 prot_mode, bool rifs_mode) 236742e7aa77SAlexander Simon { 2368074d46d1SJohannes Berg struct ieee80211_ht_operation *ht_oper; 236942e7aa77SAlexander Simon /* Build HT Information */ 2370074d46d1SJohannes Berg *pos++ = WLAN_EID_HT_OPERATION; 2371074d46d1SJohannes Berg *pos++ = sizeof(struct ieee80211_ht_operation); 2372074d46d1SJohannes Berg ht_oper = (struct ieee80211_ht_operation *)pos; 23734bf88530SJohannes Berg ht_oper->primary_chan = ieee80211_frequency_to_channel( 23744bf88530SJohannes Berg chandef->chan->center_freq); 23754bf88530SJohannes Berg switch (chandef->width) { 23764bf88530SJohannes Berg case NL80211_CHAN_WIDTH_160: 23774bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80P80: 23784bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80: 23794bf88530SJohannes Berg case NL80211_CHAN_WIDTH_40: 23804bf88530SJohannes Berg if (chandef->center_freq1 > chandef->chan->center_freq) 23814bf88530SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 23824bf88530SJohannes Berg else 2383074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 238442e7aa77SAlexander Simon break; 238542e7aa77SAlexander Simon default: 2386074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 238742e7aa77SAlexander Simon break; 238842e7aa77SAlexander Simon } 2389aee286c2SThomas Pedersen if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 23904bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 23914bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20) 2392074d46d1SJohannes Berg ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2393ff3cc5f4SSimon Wunderlich 239457f255f5SArik Nemtsov if (rifs_mode) 239557f255f5SArik Nemtsov ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 239657f255f5SArik Nemtsov 2397431e3154SAshok Nagarajan ht_oper->operation_mode = cpu_to_le16(prot_mode); 2398074d46d1SJohannes Berg ht_oper->stbc_param = 0x0000; 239942e7aa77SAlexander Simon 240042e7aa77SAlexander Simon /* It seems that Basic MCS set and Supported MCS set 240142e7aa77SAlexander Simon are identical for the first 10 bytes */ 2402074d46d1SJohannes Berg memset(&ht_oper->basic_set, 0, 16); 2403074d46d1SJohannes Berg memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 240442e7aa77SAlexander Simon 2405074d46d1SJohannes Berg return pos + sizeof(struct ieee80211_ht_operation); 240642e7aa77SAlexander Simon } 240742e7aa77SAlexander Simon 2408fb28ec0cSArik Nemtsov u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2409fb28ec0cSArik Nemtsov const struct cfg80211_chan_def *chandef) 2410fb28ec0cSArik Nemtsov { 2411fb28ec0cSArik Nemtsov struct ieee80211_vht_operation *vht_oper; 2412fb28ec0cSArik Nemtsov 2413fb28ec0cSArik Nemtsov *pos++ = WLAN_EID_VHT_OPERATION; 2414fb28ec0cSArik Nemtsov *pos++ = sizeof(struct ieee80211_vht_operation); 2415fb28ec0cSArik Nemtsov vht_oper = (struct ieee80211_vht_operation *)pos; 24162fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2417fb28ec0cSArik Nemtsov chandef->center_freq1); 2418fb28ec0cSArik Nemtsov if (chandef->center_freq2) 24192fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = 2420fb28ec0cSArik Nemtsov ieee80211_frequency_to_channel(chandef->center_freq2); 2421f020ae40SChun-Yeow Yeoh else 24222fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = 0x00; 2423fb28ec0cSArik Nemtsov 2424fb28ec0cSArik Nemtsov switch (chandef->width) { 2425fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_160: 242623665aafSJouni Malinen /* 242723665aafSJouni Malinen * Convert 160 MHz channel width to new style as interop 242823665aafSJouni Malinen * workaround. 242923665aafSJouni Malinen */ 243023665aafSJouni Malinen vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 24312fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 243223665aafSJouni Malinen if (chandef->chan->center_freq < chandef->center_freq1) 24332fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx -= 8; 243423665aafSJouni Malinen else 24352fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx += 8; 2436fb28ec0cSArik Nemtsov break; 2437fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_80P80: 243823665aafSJouni Malinen /* 243923665aafSJouni Malinen * Convert 80+80 MHz channel width to new style as interop 244023665aafSJouni Malinen * workaround. 244123665aafSJouni Malinen */ 244223665aafSJouni Malinen vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2443fb28ec0cSArik Nemtsov break; 2444fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_80: 2445fb28ec0cSArik Nemtsov vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2446fb28ec0cSArik Nemtsov break; 2447fb28ec0cSArik Nemtsov default: 2448fb28ec0cSArik Nemtsov vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2449fb28ec0cSArik Nemtsov break; 2450fb28ec0cSArik Nemtsov } 2451fb28ec0cSArik Nemtsov 2452fb28ec0cSArik Nemtsov /* don't require special VHT peer rates */ 2453fb28ec0cSArik Nemtsov vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2454fb28ec0cSArik Nemtsov 2455fb28ec0cSArik Nemtsov return pos + sizeof(struct ieee80211_vht_operation); 2456fb28ec0cSArik Nemtsov } 2457fb28ec0cSArik Nemtsov 24588ac3c704SJohannes Berg bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 24594bf88530SJohannes Berg struct cfg80211_chan_def *chandef) 246042e7aa77SAlexander Simon { 246142e7aa77SAlexander Simon enum nl80211_channel_type channel_type; 246242e7aa77SAlexander Simon 24638ac3c704SJohannes Berg if (!ht_oper) 24648ac3c704SJohannes Berg return false; 246542e7aa77SAlexander Simon 2466074d46d1SJohannes Berg switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 246742e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_NONE: 246842e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT20; 246942e7aa77SAlexander Simon break; 247042e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 247142e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40PLUS; 247242e7aa77SAlexander Simon break; 247342e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 247442e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40MINUS; 247542e7aa77SAlexander Simon break; 247642e7aa77SAlexander Simon default: 247742e7aa77SAlexander Simon channel_type = NL80211_CHAN_NO_HT; 24788ac3c704SJohannes Berg return false; 247942e7aa77SAlexander Simon } 248042e7aa77SAlexander Simon 24818ac3c704SJohannes Berg cfg80211_chandef_create(chandef, chandef->chan, channel_type); 24828ac3c704SJohannes Berg return true; 248342e7aa77SAlexander Simon } 248442e7aa77SAlexander Simon 24858ac3c704SJohannes Berg bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2486abcff6efSJanusz.Dziedzic@tieto.com struct cfg80211_chan_def *chandef) 2487abcff6efSJanusz.Dziedzic@tieto.com { 24888ac3c704SJohannes Berg struct cfg80211_chan_def new = *chandef; 24898ac3c704SJohannes Berg int cf1, cf2; 2490abcff6efSJanusz.Dziedzic@tieto.com 24918ac3c704SJohannes Berg if (!oper) 24928ac3c704SJohannes Berg return false; 24938ac3c704SJohannes Berg 24942fb51c35SJohannes Berg cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg0_idx, 24958ac3c704SJohannes Berg chandef->chan->band); 24962fb51c35SJohannes Berg cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, 24978ac3c704SJohannes Berg chandef->chan->band); 2498abcff6efSJanusz.Dziedzic@tieto.com 2499abcff6efSJanusz.Dziedzic@tieto.com switch (oper->chan_width) { 2500abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_USE_HT: 2501abcff6efSJanusz.Dziedzic@tieto.com break; 2502abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_80MHZ: 25038ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_80; 25048ac3c704SJohannes Berg new.center_freq1 = cf1; 250523665aafSJouni Malinen /* If needed, adjust based on the newer interop workaround. */ 25062fb51c35SJohannes Berg if (oper->center_freq_seg1_idx) { 250723665aafSJouni Malinen unsigned int diff; 250823665aafSJouni Malinen 25092fb51c35SJohannes Berg diff = abs(oper->center_freq_seg1_idx - 25102fb51c35SJohannes Berg oper->center_freq_seg0_idx); 251123665aafSJouni Malinen if (diff == 8) { 251223665aafSJouni Malinen new.width = NL80211_CHAN_WIDTH_160; 251323665aafSJouni Malinen new.center_freq1 = cf2; 251423665aafSJouni Malinen } else if (diff > 8) { 251523665aafSJouni Malinen new.width = NL80211_CHAN_WIDTH_80P80; 251623665aafSJouni Malinen new.center_freq2 = cf2; 251723665aafSJouni Malinen } 251823665aafSJouni Malinen } 2519abcff6efSJanusz.Dziedzic@tieto.com break; 2520abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_160MHZ: 25218ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_160; 25228ac3c704SJohannes Berg new.center_freq1 = cf1; 2523abcff6efSJanusz.Dziedzic@tieto.com break; 2524abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 25258ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_80P80; 25268ac3c704SJohannes Berg new.center_freq1 = cf1; 25278ac3c704SJohannes Berg new.center_freq2 = cf2; 2528abcff6efSJanusz.Dziedzic@tieto.com break; 2529abcff6efSJanusz.Dziedzic@tieto.com default: 25308ac3c704SJohannes Berg return false; 2531abcff6efSJanusz.Dziedzic@tieto.com } 2532abcff6efSJanusz.Dziedzic@tieto.com 25338ac3c704SJohannes Berg if (!cfg80211_chandef_valid(&new)) 25348ac3c704SJohannes Berg return false; 25358ac3c704SJohannes Berg 25368ac3c704SJohannes Berg *chandef = new; 25378ac3c704SJohannes Berg return true; 2538abcff6efSJanusz.Dziedzic@tieto.com } 2539abcff6efSJanusz.Dziedzic@tieto.com 25402103dec1SSimon Wunderlich int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 25412103dec1SSimon Wunderlich const struct ieee80211_supported_band *sband, 25422103dec1SSimon Wunderlich const u8 *srates, int srates_len, u32 *rates) 25432103dec1SSimon Wunderlich { 25442103dec1SSimon Wunderlich u32 rate_flags = ieee80211_chandef_rate_flags(chandef); 25452103dec1SSimon Wunderlich int shift = ieee80211_chandef_get_shift(chandef); 25462103dec1SSimon Wunderlich struct ieee80211_rate *br; 25472103dec1SSimon Wunderlich int brate, rate, i, j, count = 0; 25482103dec1SSimon Wunderlich 25492103dec1SSimon Wunderlich *rates = 0; 25502103dec1SSimon Wunderlich 25512103dec1SSimon Wunderlich for (i = 0; i < srates_len; i++) { 25522103dec1SSimon Wunderlich rate = srates[i] & 0x7f; 25532103dec1SSimon Wunderlich 25542103dec1SSimon Wunderlich for (j = 0; j < sband->n_bitrates; j++) { 25552103dec1SSimon Wunderlich br = &sband->bitrates[j]; 25562103dec1SSimon Wunderlich if ((rate_flags & br->flags) != rate_flags) 25572103dec1SSimon Wunderlich continue; 25582103dec1SSimon Wunderlich 25592103dec1SSimon Wunderlich brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); 25602103dec1SSimon Wunderlich if (brate == rate) { 25612103dec1SSimon Wunderlich *rates |= BIT(j); 25622103dec1SSimon Wunderlich count++; 25632103dec1SSimon Wunderlich break; 25642103dec1SSimon Wunderlich } 25652103dec1SSimon Wunderlich } 25662103dec1SSimon Wunderlich } 25672103dec1SSimon Wunderlich return count; 25682103dec1SSimon Wunderlich } 25692103dec1SSimon Wunderlich 2570fc8a7321SJohannes Berg int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 25716b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 257257fbcce3SJohannes Berg enum nl80211_band band) 2573768db343SArik Nemtsov { 2574768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 2575768db343SArik Nemtsov struct ieee80211_supported_band *sband; 25762103dec1SSimon Wunderlich int rate, shift; 2577768db343SArik Nemtsov u8 i, rates, *pos; 2578fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 25792103dec1SSimon Wunderlich u32 rate_flags; 2580768db343SArik Nemtsov 25812103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 25822103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 25836b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 25842103dec1SSimon Wunderlich rates = 0; 25852103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 25862103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 25872103dec1SSimon Wunderlich continue; 25882103dec1SSimon Wunderlich rates++; 25892103dec1SSimon Wunderlich } 2590768db343SArik Nemtsov if (rates > 8) 2591768db343SArik Nemtsov rates = 8; 2592768db343SArik Nemtsov 2593768db343SArik Nemtsov if (skb_tailroom(skb) < rates + 2) 2594768db343SArik Nemtsov return -ENOMEM; 2595768db343SArik Nemtsov 2596768db343SArik Nemtsov pos = skb_put(skb, rates + 2); 2597768db343SArik Nemtsov *pos++ = WLAN_EID_SUPP_RATES; 2598768db343SArik Nemtsov *pos++ = rates; 2599768db343SArik Nemtsov for (i = 0; i < rates; i++) { 2600657c3e0cSAshok Nagarajan u8 basic = 0; 26012103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 26022103dec1SSimon Wunderlich continue; 26032103dec1SSimon Wunderlich 2604657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 2605657c3e0cSAshok Nagarajan basic = 0x80; 26062103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 26072103dec1SSimon Wunderlich 5 * (1 << shift)); 26082103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 2609768db343SArik Nemtsov } 2610768db343SArik Nemtsov 2611768db343SArik Nemtsov return 0; 2612768db343SArik Nemtsov } 2613768db343SArik Nemtsov 2614fc8a7321SJohannes Berg int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 26156b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 261657fbcce3SJohannes Berg enum nl80211_band band) 2617768db343SArik Nemtsov { 2618768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 2619768db343SArik Nemtsov struct ieee80211_supported_band *sband; 2620cc63ec76SChun-Yeow Yeoh int rate, shift; 2621768db343SArik Nemtsov u8 i, exrates, *pos; 2622fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 26232103dec1SSimon Wunderlich u32 rate_flags; 26242103dec1SSimon Wunderlich 26252103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 26262103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 2627768db343SArik Nemtsov 26286b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 26292103dec1SSimon Wunderlich exrates = 0; 26302103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 26312103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 26322103dec1SSimon Wunderlich continue; 26332103dec1SSimon Wunderlich exrates++; 26342103dec1SSimon Wunderlich } 26352103dec1SSimon Wunderlich 2636768db343SArik Nemtsov if (exrates > 8) 2637768db343SArik Nemtsov exrates -= 8; 2638768db343SArik Nemtsov else 2639768db343SArik Nemtsov exrates = 0; 2640768db343SArik Nemtsov 2641768db343SArik Nemtsov if (skb_tailroom(skb) < exrates + 2) 2642768db343SArik Nemtsov return -ENOMEM; 2643768db343SArik Nemtsov 2644768db343SArik Nemtsov if (exrates) { 2645768db343SArik Nemtsov pos = skb_put(skb, exrates + 2); 2646768db343SArik Nemtsov *pos++ = WLAN_EID_EXT_SUPP_RATES; 2647768db343SArik Nemtsov *pos++ = exrates; 2648768db343SArik Nemtsov for (i = 8; i < sband->n_bitrates; i++) { 2649657c3e0cSAshok Nagarajan u8 basic = 0; 26502103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) 26512103dec1SSimon Wunderlich != rate_flags) 26522103dec1SSimon Wunderlich continue; 2653657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 2654657c3e0cSAshok Nagarajan basic = 0x80; 26552103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 26562103dec1SSimon Wunderlich 5 * (1 << shift)); 26572103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 2658768db343SArik Nemtsov } 2659768db343SArik Nemtsov } 2660768db343SArik Nemtsov return 0; 2661768db343SArik Nemtsov } 26621dae27f8SWey-Yi Guy 26631dae27f8SWey-Yi Guy int ieee80211_ave_rssi(struct ieee80211_vif *vif) 26641dae27f8SWey-Yi Guy { 26651dae27f8SWey-Yi Guy struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 26661dae27f8SWey-Yi Guy struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 26671dae27f8SWey-Yi Guy 2668be6bcabcSWey-Yi Guy if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { 2669be6bcabcSWey-Yi Guy /* non-managed type inferfaces */ 2670be6bcabcSWey-Yi Guy return 0; 2671be6bcabcSWey-Yi Guy } 2672338c17aeSJohannes Berg return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); 26731dae27f8SWey-Yi Guy } 26740d8a0a17SWey-Yi Guy EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 267504ecd257SJohannes Berg 267604ecd257SJohannes Berg u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 267704ecd257SJohannes Berg { 267804ecd257SJohannes Berg if (!mcs) 267904ecd257SJohannes Berg return 1; 268004ecd257SJohannes Berg 268104ecd257SJohannes Berg /* TODO: consider rx_highest */ 268204ecd257SJohannes Berg 268304ecd257SJohannes Berg if (mcs->rx_mask[3]) 268404ecd257SJohannes Berg return 4; 268504ecd257SJohannes Berg if (mcs->rx_mask[2]) 268604ecd257SJohannes Berg return 3; 268704ecd257SJohannes Berg if (mcs->rx_mask[1]) 268804ecd257SJohannes Berg return 2; 268904ecd257SJohannes Berg return 1; 269004ecd257SJohannes Berg } 2691f4bda337SThomas Pedersen 2692f4bda337SThomas Pedersen /** 2693f4bda337SThomas Pedersen * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 2694f4bda337SThomas Pedersen * @local: mac80211 hw info struct 2695f4bda337SThomas Pedersen * @status: RX status 2696f4bda337SThomas Pedersen * @mpdu_len: total MPDU length (including FCS) 2697f4bda337SThomas Pedersen * @mpdu_offset: offset into MPDU to calculate timestamp at 2698f4bda337SThomas Pedersen * 2699f4bda337SThomas Pedersen * This function calculates the RX timestamp at the given MPDU offset, taking 2700f4bda337SThomas Pedersen * into account what the RX timestamp was. An offset of 0 will just normalize 2701f4bda337SThomas Pedersen * the timestamp to TSF at beginning of MPDU reception. 2702f4bda337SThomas Pedersen */ 2703f4bda337SThomas Pedersen u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 2704f4bda337SThomas Pedersen struct ieee80211_rx_status *status, 2705f4bda337SThomas Pedersen unsigned int mpdu_len, 2706f4bda337SThomas Pedersen unsigned int mpdu_offset) 2707f4bda337SThomas Pedersen { 2708f4bda337SThomas Pedersen u64 ts = status->mactime; 2709f4bda337SThomas Pedersen struct rate_info ri; 2710f4bda337SThomas Pedersen u16 rate; 2711f4bda337SThomas Pedersen 2712f4bda337SThomas Pedersen if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 2713f4bda337SThomas Pedersen return 0; 2714f4bda337SThomas Pedersen 2715f4bda337SThomas Pedersen memset(&ri, 0, sizeof(ri)); 2716f4bda337SThomas Pedersen 2717f4bda337SThomas Pedersen /* Fill cfg80211 rate info */ 2718f4bda337SThomas Pedersen if (status->flag & RX_FLAG_HT) { 2719f4bda337SThomas Pedersen ri.mcs = status->rate_idx; 2720f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_MCS; 2721f4bda337SThomas Pedersen if (status->flag & RX_FLAG_40MHZ) 2722b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_40; 2723b51f3beeSJohannes Berg else 2724b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_20; 2725f4bda337SThomas Pedersen if (status->flag & RX_FLAG_SHORT_GI) 2726f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 27275614618eSJohannes Berg } else if (status->flag & RX_FLAG_VHT) { 27285614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 27295614618eSJohannes Berg ri.mcs = status->rate_idx; 27305614618eSJohannes Berg ri.nss = status->vht_nss; 27315614618eSJohannes Berg if (status->flag & RX_FLAG_40MHZ) 2732b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_40; 2733b51f3beeSJohannes Berg else if (status->vht_flag & RX_VHT_FLAG_80MHZ) 2734b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_80; 2735b51f3beeSJohannes Berg else if (status->vht_flag & RX_VHT_FLAG_160MHZ) 2736b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_160; 2737b51f3beeSJohannes Berg else 2738b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_20; 27395614618eSJohannes Berg if (status->flag & RX_FLAG_SHORT_GI) 27405614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 2741f4bda337SThomas Pedersen } else { 2742f4bda337SThomas Pedersen struct ieee80211_supported_band *sband; 27432103dec1SSimon Wunderlich int shift = 0; 27442103dec1SSimon Wunderlich int bitrate; 27452103dec1SSimon Wunderlich 2746b51f3beeSJohannes Berg if (status->flag & RX_FLAG_10MHZ) { 27472103dec1SSimon Wunderlich shift = 1; 2748b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_10; 2749b51f3beeSJohannes Berg } else if (status->flag & RX_FLAG_5MHZ) { 27502103dec1SSimon Wunderlich shift = 2; 2751b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_5; 2752b51f3beeSJohannes Berg } else { 2753b51f3beeSJohannes Berg ri.bw = RATE_INFO_BW_20; 2754b51f3beeSJohannes Berg } 2755f4bda337SThomas Pedersen 2756f4bda337SThomas Pedersen sband = local->hw.wiphy->bands[status->band]; 27572103dec1SSimon Wunderlich bitrate = sband->bitrates[status->rate_idx].bitrate; 27582103dec1SSimon Wunderlich ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); 2759f4a0f0c5SJohannes Berg 2760f4a0f0c5SJohannes Berg if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 2761f4a0f0c5SJohannes Berg /* TODO: handle HT/VHT preambles */ 276257fbcce3SJohannes Berg if (status->band == NL80211_BAND_5GHZ) { 2763f4a0f0c5SJohannes Berg ts += 20 << shift; 2764f4a0f0c5SJohannes Berg mpdu_offset += 2; 2765f4a0f0c5SJohannes Berg } else if (status->flag & RX_FLAG_SHORTPRE) { 2766f4a0f0c5SJohannes Berg ts += 96; 2767f4a0f0c5SJohannes Berg } else { 2768f4a0f0c5SJohannes Berg ts += 192; 2769f4a0f0c5SJohannes Berg } 2770f4a0f0c5SJohannes Berg } 2771f4bda337SThomas Pedersen } 2772f4bda337SThomas Pedersen 2773f4bda337SThomas Pedersen rate = cfg80211_calculate_bitrate(&ri); 2774d86aa4f8SJohannes Berg if (WARN_ONCE(!rate, 2775f980ebc0SSara Sharon "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 2776f980ebc0SSara Sharon (unsigned long long)status->flag, status->rate_idx, 2777f980ebc0SSara Sharon status->vht_nss)) 2778d86aa4f8SJohannes Berg return 0; 2779f4bda337SThomas Pedersen 2780f4bda337SThomas Pedersen /* rewind from end of MPDU */ 2781f4bda337SThomas Pedersen if (status->flag & RX_FLAG_MACTIME_END) 2782f4bda337SThomas Pedersen ts -= mpdu_len * 8 * 10 / rate; 2783f4bda337SThomas Pedersen 2784f4bda337SThomas Pedersen ts += mpdu_offset * 8 * 10 / rate; 2785f4bda337SThomas Pedersen 2786f4bda337SThomas Pedersen return ts; 2787f4bda337SThomas Pedersen } 2788164eb02dSSimon Wunderlich 2789164eb02dSSimon Wunderlich void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 2790164eb02dSSimon Wunderlich { 2791164eb02dSSimon Wunderlich struct ieee80211_sub_if_data *sdata; 2792d2859df5SJanusz Dziedzic struct cfg80211_chan_def chandef; 2793164eb02dSSimon Wunderlich 279434a3740dSJohannes Berg mutex_lock(&local->mtx); 2795164eb02dSSimon Wunderlich mutex_lock(&local->iflist_mtx); 2796164eb02dSSimon Wunderlich list_for_each_entry(sdata, &local->interfaces, list) { 279734a3740dSJohannes Berg /* it might be waiting for the local->mtx, but then 279834a3740dSJohannes Berg * by the time it gets it, sdata->wdev.cac_started 279934a3740dSJohannes Berg * will no longer be true 280034a3740dSJohannes Berg */ 280134a3740dSJohannes Berg cancel_delayed_work(&sdata->dfs_cac_timer_work); 2802164eb02dSSimon Wunderlich 2803164eb02dSSimon Wunderlich if (sdata->wdev.cac_started) { 2804d2859df5SJanusz Dziedzic chandef = sdata->vif.bss_conf.chandef; 2805164eb02dSSimon Wunderlich ieee80211_vif_release_channel(sdata); 2806164eb02dSSimon Wunderlich cfg80211_cac_event(sdata->dev, 2807d2859df5SJanusz Dziedzic &chandef, 2808164eb02dSSimon Wunderlich NL80211_RADAR_CAC_ABORTED, 2809164eb02dSSimon Wunderlich GFP_KERNEL); 2810164eb02dSSimon Wunderlich } 2811164eb02dSSimon Wunderlich } 2812164eb02dSSimon Wunderlich mutex_unlock(&local->iflist_mtx); 281334a3740dSJohannes Berg mutex_unlock(&local->mtx); 2814164eb02dSSimon Wunderlich } 2815164eb02dSSimon Wunderlich 2816164eb02dSSimon Wunderlich void ieee80211_dfs_radar_detected_work(struct work_struct *work) 2817164eb02dSSimon Wunderlich { 2818164eb02dSSimon Wunderlich struct ieee80211_local *local = 2819164eb02dSSimon Wunderlich container_of(work, struct ieee80211_local, radar_detected_work); 282084a3d1c9SJanusz Dziedzic struct cfg80211_chan_def chandef = local->hw.conf.chandef; 2821486cf4c0SMichal Kazior struct ieee80211_chanctx *ctx; 2822486cf4c0SMichal Kazior int num_chanctx = 0; 2823486cf4c0SMichal Kazior 2824486cf4c0SMichal Kazior mutex_lock(&local->chanctx_mtx); 2825486cf4c0SMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 2826486cf4c0SMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 2827486cf4c0SMichal Kazior continue; 2828486cf4c0SMichal Kazior 2829486cf4c0SMichal Kazior num_chanctx++; 2830486cf4c0SMichal Kazior chandef = ctx->conf.def; 2831486cf4c0SMichal Kazior } 2832486cf4c0SMichal Kazior mutex_unlock(&local->chanctx_mtx); 2833164eb02dSSimon Wunderlich 2834164eb02dSSimon Wunderlich ieee80211_dfs_cac_cancel(local); 2835164eb02dSSimon Wunderlich 2836486cf4c0SMichal Kazior if (num_chanctx > 1) 2837486cf4c0SMichal Kazior /* XXX: multi-channel is not supported yet */ 2838164eb02dSSimon Wunderlich WARN_ON(1); 283984a3d1c9SJanusz Dziedzic else 2840164eb02dSSimon Wunderlich cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 2841164eb02dSSimon Wunderlich } 2842164eb02dSSimon Wunderlich 2843164eb02dSSimon Wunderlich void ieee80211_radar_detected(struct ieee80211_hw *hw) 2844164eb02dSSimon Wunderlich { 2845164eb02dSSimon Wunderlich struct ieee80211_local *local = hw_to_local(hw); 2846164eb02dSSimon Wunderlich 2847164eb02dSSimon Wunderlich trace_api_radar_detected(local); 2848164eb02dSSimon Wunderlich 2849164eb02dSSimon Wunderlich ieee80211_queue_work(hw, &local->radar_detected_work); 2850164eb02dSSimon Wunderlich } 2851164eb02dSSimon Wunderlich EXPORT_SYMBOL(ieee80211_radar_detected); 2852e6b7cde4SSimon Wunderlich 2853e6b7cde4SSimon Wunderlich u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) 2854e6b7cde4SSimon Wunderlich { 2855e6b7cde4SSimon Wunderlich u32 ret; 2856e6b7cde4SSimon Wunderlich int tmp; 2857e6b7cde4SSimon Wunderlich 2858e6b7cde4SSimon Wunderlich switch (c->width) { 2859e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20: 2860e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 2861e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2862e6b7cde4SSimon Wunderlich break; 2863e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_40: 2864e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20; 2865e6b7cde4SSimon Wunderlich c->center_freq1 = c->chan->center_freq; 2866e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_40MHZ | 2867e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_VHT; 2868e6b7cde4SSimon Wunderlich break; 2869e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80: 2870e6b7cde4SSimon Wunderlich tmp = (30 + c->chan->center_freq - c->center_freq1)/20; 2871e6b7cde4SSimon Wunderlich /* n_P40 */ 2872e6b7cde4SSimon Wunderlich tmp /= 2; 2873e6b7cde4SSimon Wunderlich /* freq_P40 */ 2874e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; 2875e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_40; 2876e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_VHT; 2877e6b7cde4SSimon Wunderlich break; 2878e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80P80: 2879e6b7cde4SSimon Wunderlich c->center_freq2 = 0; 2880e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 2881e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_80P80MHZ | 2882e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_160MHZ; 2883e6b7cde4SSimon Wunderlich break; 2884e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_160: 2885e6b7cde4SSimon Wunderlich /* n_P20 */ 2886e6b7cde4SSimon Wunderlich tmp = (70 + c->chan->center_freq - c->center_freq1)/20; 2887e6b7cde4SSimon Wunderlich /* n_P80 */ 2888e6b7cde4SSimon Wunderlich tmp /= 4; 2889e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; 2890e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 2891e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_80P80MHZ | 2892e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_160MHZ; 2893e6b7cde4SSimon Wunderlich break; 2894e6b7cde4SSimon Wunderlich default: 2895e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20_NOHT: 2896e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 2897e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 2898e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2899e6b7cde4SSimon Wunderlich break; 2900e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_5: 2901e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_10: 2902e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 2903e6b7cde4SSimon Wunderlich /* keep c->width */ 2904e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2905e6b7cde4SSimon Wunderlich break; 2906e6b7cde4SSimon Wunderlich } 2907e6b7cde4SSimon Wunderlich 2908e6b7cde4SSimon Wunderlich WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 2909e6b7cde4SSimon Wunderlich 2910e6b7cde4SSimon Wunderlich return ret; 2911e6b7cde4SSimon Wunderlich } 2912687da132SEmmanuel Grumbach 2913687da132SEmmanuel Grumbach /* 2914687da132SEmmanuel Grumbach * Returns true if smps_mode_new is strictly more restrictive than 2915687da132SEmmanuel Grumbach * smps_mode_old. 2916687da132SEmmanuel Grumbach */ 2917687da132SEmmanuel Grumbach bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2918687da132SEmmanuel Grumbach enum ieee80211_smps_mode smps_mode_new) 2919687da132SEmmanuel Grumbach { 2920687da132SEmmanuel Grumbach if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 2921687da132SEmmanuel Grumbach smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 2922687da132SEmmanuel Grumbach return false; 2923687da132SEmmanuel Grumbach 2924687da132SEmmanuel Grumbach switch (smps_mode_old) { 2925687da132SEmmanuel Grumbach case IEEE80211_SMPS_STATIC: 2926687da132SEmmanuel Grumbach return false; 2927687da132SEmmanuel Grumbach case IEEE80211_SMPS_DYNAMIC: 2928687da132SEmmanuel Grumbach return smps_mode_new == IEEE80211_SMPS_STATIC; 2929687da132SEmmanuel Grumbach case IEEE80211_SMPS_OFF: 2930687da132SEmmanuel Grumbach return smps_mode_new != IEEE80211_SMPS_OFF; 2931687da132SEmmanuel Grumbach default: 2932687da132SEmmanuel Grumbach WARN_ON(1); 2933687da132SEmmanuel Grumbach } 2934687da132SEmmanuel Grumbach 2935687da132SEmmanuel Grumbach return false; 2936687da132SEmmanuel Grumbach } 2937c6da674aSChun-Yeow Yeoh 2938c6da674aSChun-Yeow Yeoh int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2939c6da674aSChun-Yeow Yeoh struct cfg80211_csa_settings *csa_settings) 2940c6da674aSChun-Yeow Yeoh { 2941c6da674aSChun-Yeow Yeoh struct sk_buff *skb; 2942c6da674aSChun-Yeow Yeoh struct ieee80211_mgmt *mgmt; 2943c6da674aSChun-Yeow Yeoh struct ieee80211_local *local = sdata->local; 2944c6da674aSChun-Yeow Yeoh int freq; 2945c6da674aSChun-Yeow Yeoh int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + 2946c6da674aSChun-Yeow Yeoh sizeof(mgmt->u.action.u.chan_switch); 2947c6da674aSChun-Yeow Yeoh u8 *pos; 2948c6da674aSChun-Yeow Yeoh 2949c6da674aSChun-Yeow Yeoh if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2950c6da674aSChun-Yeow Yeoh sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2951c6da674aSChun-Yeow Yeoh return -EOPNOTSUPP; 2952c6da674aSChun-Yeow Yeoh 2953c6da674aSChun-Yeow Yeoh skb = dev_alloc_skb(local->tx_headroom + hdr_len + 2954c6da674aSChun-Yeow Yeoh 5 + /* channel switch announcement element */ 2955c6da674aSChun-Yeow Yeoh 3 + /* secondary channel offset element */ 2956c6da674aSChun-Yeow Yeoh 8); /* mesh channel switch parameters element */ 2957c6da674aSChun-Yeow Yeoh if (!skb) 2958c6da674aSChun-Yeow Yeoh return -ENOMEM; 2959c6da674aSChun-Yeow Yeoh 2960c6da674aSChun-Yeow Yeoh skb_reserve(skb, local->tx_headroom); 2961c6da674aSChun-Yeow Yeoh mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); 2962c6da674aSChun-Yeow Yeoh memset(mgmt, 0, hdr_len); 2963c6da674aSChun-Yeow Yeoh mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2964c6da674aSChun-Yeow Yeoh IEEE80211_STYPE_ACTION); 2965c6da674aSChun-Yeow Yeoh 2966c6da674aSChun-Yeow Yeoh eth_broadcast_addr(mgmt->da); 2967c6da674aSChun-Yeow Yeoh memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2968c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 2969c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 2970c6da674aSChun-Yeow Yeoh } else { 2971c6da674aSChun-Yeow Yeoh struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2972c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 2973c6da674aSChun-Yeow Yeoh } 2974c6da674aSChun-Yeow Yeoh mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 2975c6da674aSChun-Yeow Yeoh mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 2976c6da674aSChun-Yeow Yeoh pos = skb_put(skb, 5); 2977c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 2978c6da674aSChun-Yeow Yeoh *pos++ = 3; /* IE length */ 2979c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 2980c6da674aSChun-Yeow Yeoh freq = csa_settings->chandef.chan->center_freq; 2981c6da674aSChun-Yeow Yeoh *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 2982c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->count; /* count */ 2983c6da674aSChun-Yeow Yeoh 2984c6da674aSChun-Yeow Yeoh if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 2985c6da674aSChun-Yeow Yeoh enum nl80211_channel_type ch_type; 2986c6da674aSChun-Yeow Yeoh 2987c6da674aSChun-Yeow Yeoh skb_put(skb, 3); 2988c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 2989c6da674aSChun-Yeow Yeoh *pos++ = 1; /* IE length */ 2990c6da674aSChun-Yeow Yeoh ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 2991c6da674aSChun-Yeow Yeoh if (ch_type == NL80211_CHAN_HT40PLUS) 2992c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2993c6da674aSChun-Yeow Yeoh else 2994c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2995c6da674aSChun-Yeow Yeoh } 2996c6da674aSChun-Yeow Yeoh 2997c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 2998c6da674aSChun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2999c6da674aSChun-Yeow Yeoh 3000c6da674aSChun-Yeow Yeoh skb_put(skb, 8); 3001c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3002c6da674aSChun-Yeow Yeoh *pos++ = 6; /* IE length */ 3003c6da674aSChun-Yeow Yeoh *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3004c6da674aSChun-Yeow Yeoh *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3005c6da674aSChun-Yeow Yeoh *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3006c6da674aSChun-Yeow Yeoh *pos++ |= csa_settings->block_tx ? 3007c6da674aSChun-Yeow Yeoh WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3008c6da674aSChun-Yeow Yeoh put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3009c6da674aSChun-Yeow Yeoh pos += 2; 3010ca91dc97SChun-Yeow Yeoh put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3011c6da674aSChun-Yeow Yeoh pos += 2; 3012c6da674aSChun-Yeow Yeoh } 3013c6da674aSChun-Yeow Yeoh 3014c6da674aSChun-Yeow Yeoh ieee80211_tx_skb(sdata, skb); 3015c6da674aSChun-Yeow Yeoh return 0; 3016c6da674aSChun-Yeow Yeoh } 30172475b1ccSMax Stepanov 30182475b1ccSMax Stepanov bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) 30192475b1ccSMax Stepanov { 30202475b1ccSMax Stepanov return !(cs == NULL || cs->cipher == 0 || 30212475b1ccSMax Stepanov cs->hdr_len < cs->pn_len + cs->pn_off || 30222475b1ccSMax Stepanov cs->hdr_len <= cs->key_idx_off || 30232475b1ccSMax Stepanov cs->key_idx_shift > 7 || 30242475b1ccSMax Stepanov cs->key_idx_mask == 0); 30252475b1ccSMax Stepanov } 30262475b1ccSMax Stepanov 30272475b1ccSMax Stepanov bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) 30282475b1ccSMax Stepanov { 30292475b1ccSMax Stepanov int i; 30302475b1ccSMax Stepanov 30312475b1ccSMax Stepanov /* Ensure we have enough iftype bitmap space for all iftype values */ 30322475b1ccSMax Stepanov WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); 30332475b1ccSMax Stepanov 30342475b1ccSMax Stepanov for (i = 0; i < n; i++) 30352475b1ccSMax Stepanov if (!ieee80211_cs_valid(&cs[i])) 30362475b1ccSMax Stepanov return false; 30372475b1ccSMax Stepanov 30382475b1ccSMax Stepanov return true; 30392475b1ccSMax Stepanov } 30402475b1ccSMax Stepanov 30412475b1ccSMax Stepanov const struct ieee80211_cipher_scheme * 30422475b1ccSMax Stepanov ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 30432475b1ccSMax Stepanov enum nl80211_iftype iftype) 30442475b1ccSMax Stepanov { 30452475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; 30462475b1ccSMax Stepanov int n = local->hw.n_cipher_schemes; 30472475b1ccSMax Stepanov int i; 30482475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *cs = NULL; 30492475b1ccSMax Stepanov 30502475b1ccSMax Stepanov for (i = 0; i < n; i++) { 30512475b1ccSMax Stepanov if (l[i].cipher == cipher) { 30522475b1ccSMax Stepanov cs = &l[i]; 30532475b1ccSMax Stepanov break; 30542475b1ccSMax Stepanov } 30552475b1ccSMax Stepanov } 30562475b1ccSMax Stepanov 30572475b1ccSMax Stepanov if (!cs || !(cs->iftype & BIT(iftype))) 30582475b1ccSMax Stepanov return NULL; 30592475b1ccSMax Stepanov 30602475b1ccSMax Stepanov return cs; 30612475b1ccSMax Stepanov } 30622475b1ccSMax Stepanov 30632475b1ccSMax Stepanov int ieee80211_cs_headroom(struct ieee80211_local *local, 30642475b1ccSMax Stepanov struct cfg80211_crypto_settings *crypto, 30652475b1ccSMax Stepanov enum nl80211_iftype iftype) 30662475b1ccSMax Stepanov { 30672475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *cs; 30682475b1ccSMax Stepanov int headroom = IEEE80211_ENCRYPT_HEADROOM; 30692475b1ccSMax Stepanov int i; 30702475b1ccSMax Stepanov 30712475b1ccSMax Stepanov for (i = 0; i < crypto->n_ciphers_pairwise; i++) { 30722475b1ccSMax Stepanov cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], 30732475b1ccSMax Stepanov iftype); 30742475b1ccSMax Stepanov 30752475b1ccSMax Stepanov if (cs && headroom < cs->hdr_len) 30762475b1ccSMax Stepanov headroom = cs->hdr_len; 30772475b1ccSMax Stepanov } 30782475b1ccSMax Stepanov 30792475b1ccSMax Stepanov cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); 30802475b1ccSMax Stepanov if (cs && headroom < cs->hdr_len) 30812475b1ccSMax Stepanov headroom = cs->hdr_len; 30822475b1ccSMax Stepanov 30832475b1ccSMax Stepanov return headroom; 30842475b1ccSMax Stepanov } 3085a7022e65SFelix Fietkau 3086a7022e65SFelix Fietkau static bool 3087a7022e65SFelix Fietkau ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3088a7022e65SFelix Fietkau { 3089a7022e65SFelix Fietkau s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3090a7022e65SFelix Fietkau int skip; 3091a7022e65SFelix Fietkau 3092a7022e65SFelix Fietkau if (end > 0) 3093a7022e65SFelix Fietkau return false; 3094a7022e65SFelix Fietkau 3095519ee691SJanusz.Dziedzic@tieto.com /* One shot NOA */ 3096519ee691SJanusz.Dziedzic@tieto.com if (data->count[i] == 1) 3097519ee691SJanusz.Dziedzic@tieto.com return false; 3098519ee691SJanusz.Dziedzic@tieto.com 3099519ee691SJanusz.Dziedzic@tieto.com if (data->desc[i].interval == 0) 3100519ee691SJanusz.Dziedzic@tieto.com return false; 3101519ee691SJanusz.Dziedzic@tieto.com 3102a7022e65SFelix Fietkau /* End time is in the past, check for repetitions */ 3103a7022e65SFelix Fietkau skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3104a7022e65SFelix Fietkau if (data->count[i] < 255) { 3105a7022e65SFelix Fietkau if (data->count[i] <= skip) { 3106a7022e65SFelix Fietkau data->count[i] = 0; 3107a7022e65SFelix Fietkau return false; 3108a7022e65SFelix Fietkau } 3109a7022e65SFelix Fietkau 3110a7022e65SFelix Fietkau data->count[i] -= skip; 3111a7022e65SFelix Fietkau } 3112a7022e65SFelix Fietkau 3113a7022e65SFelix Fietkau data->desc[i].start += skip * data->desc[i].interval; 3114a7022e65SFelix Fietkau 3115a7022e65SFelix Fietkau return true; 3116a7022e65SFelix Fietkau } 3117a7022e65SFelix Fietkau 3118a7022e65SFelix Fietkau static bool 3119a7022e65SFelix Fietkau ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3120a7022e65SFelix Fietkau s32 *offset) 3121a7022e65SFelix Fietkau { 3122a7022e65SFelix Fietkau bool ret = false; 3123a7022e65SFelix Fietkau int i; 3124a7022e65SFelix Fietkau 3125a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3126a7022e65SFelix Fietkau s32 cur; 3127a7022e65SFelix Fietkau 3128a7022e65SFelix Fietkau if (!data->count[i]) 3129a7022e65SFelix Fietkau continue; 3130a7022e65SFelix Fietkau 3131a7022e65SFelix Fietkau if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3132a7022e65SFelix Fietkau ret = true; 3133a7022e65SFelix Fietkau 3134a7022e65SFelix Fietkau cur = data->desc[i].start - tsf; 3135a7022e65SFelix Fietkau if (cur > *offset) 3136a7022e65SFelix Fietkau continue; 3137a7022e65SFelix Fietkau 3138a7022e65SFelix Fietkau cur = data->desc[i].start + data->desc[i].duration - tsf; 3139a7022e65SFelix Fietkau if (cur > *offset) 3140a7022e65SFelix Fietkau *offset = cur; 3141a7022e65SFelix Fietkau } 3142a7022e65SFelix Fietkau 3143a7022e65SFelix Fietkau return ret; 3144a7022e65SFelix Fietkau } 3145a7022e65SFelix Fietkau 3146a7022e65SFelix Fietkau static u32 3147a7022e65SFelix Fietkau ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3148a7022e65SFelix Fietkau { 3149a7022e65SFelix Fietkau s32 offset = 0; 3150a7022e65SFelix Fietkau int tries = 0; 3151a7022e65SFelix Fietkau /* 3152a7022e65SFelix Fietkau * arbitrary limit, used to avoid infinite loops when combined NoA 3153a7022e65SFelix Fietkau * descriptors cover the full time period. 3154a7022e65SFelix Fietkau */ 3155a7022e65SFelix Fietkau int max_tries = 5; 3156a7022e65SFelix Fietkau 3157a7022e65SFelix Fietkau ieee80211_extend_absent_time(data, tsf, &offset); 3158a7022e65SFelix Fietkau do { 3159a7022e65SFelix Fietkau if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3160a7022e65SFelix Fietkau break; 3161a7022e65SFelix Fietkau 3162a7022e65SFelix Fietkau tries++; 3163a7022e65SFelix Fietkau } while (tries < max_tries); 3164a7022e65SFelix Fietkau 3165a7022e65SFelix Fietkau return offset; 3166a7022e65SFelix Fietkau } 3167a7022e65SFelix Fietkau 3168a7022e65SFelix Fietkau void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3169a7022e65SFelix Fietkau { 3170a7022e65SFelix Fietkau u32 next_offset = BIT(31) - 1; 3171a7022e65SFelix Fietkau int i; 3172a7022e65SFelix Fietkau 3173a7022e65SFelix Fietkau data->absent = 0; 3174a7022e65SFelix Fietkau data->has_next_tsf = false; 3175a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3176a7022e65SFelix Fietkau s32 start; 3177a7022e65SFelix Fietkau 3178a7022e65SFelix Fietkau if (!data->count[i]) 3179a7022e65SFelix Fietkau continue; 3180a7022e65SFelix Fietkau 3181a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 3182a7022e65SFelix Fietkau start = data->desc[i].start - tsf; 3183a7022e65SFelix Fietkau if (start <= 0) 3184a7022e65SFelix Fietkau data->absent |= BIT(i); 3185a7022e65SFelix Fietkau 3186a7022e65SFelix Fietkau if (next_offset > start) 3187a7022e65SFelix Fietkau next_offset = start; 3188a7022e65SFelix Fietkau 3189a7022e65SFelix Fietkau data->has_next_tsf = true; 3190a7022e65SFelix Fietkau } 3191a7022e65SFelix Fietkau 3192a7022e65SFelix Fietkau if (data->absent) 3193a7022e65SFelix Fietkau next_offset = ieee80211_get_noa_absent_time(data, tsf); 3194a7022e65SFelix Fietkau 3195a7022e65SFelix Fietkau data->next_tsf = tsf + next_offset; 3196a7022e65SFelix Fietkau } 3197a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3198a7022e65SFelix Fietkau 3199a7022e65SFelix Fietkau int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3200a7022e65SFelix Fietkau struct ieee80211_noa_data *data, u32 tsf) 3201a7022e65SFelix Fietkau { 3202a7022e65SFelix Fietkau int ret = 0; 3203a7022e65SFelix Fietkau int i; 3204a7022e65SFelix Fietkau 3205a7022e65SFelix Fietkau memset(data, 0, sizeof(*data)); 3206a7022e65SFelix Fietkau 3207a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3208a7022e65SFelix Fietkau const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3209a7022e65SFelix Fietkau 3210a7022e65SFelix Fietkau if (!desc->count || !desc->duration) 3211a7022e65SFelix Fietkau continue; 3212a7022e65SFelix Fietkau 3213a7022e65SFelix Fietkau data->count[i] = desc->count; 3214a7022e65SFelix Fietkau data->desc[i].start = le32_to_cpu(desc->start_time); 3215a7022e65SFelix Fietkau data->desc[i].duration = le32_to_cpu(desc->duration); 3216a7022e65SFelix Fietkau data->desc[i].interval = le32_to_cpu(desc->interval); 3217a7022e65SFelix Fietkau 3218a7022e65SFelix Fietkau if (data->count[i] > 1 && 3219a7022e65SFelix Fietkau data->desc[i].interval < data->desc[i].duration) 3220a7022e65SFelix Fietkau continue; 3221a7022e65SFelix Fietkau 3222a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 3223a7022e65SFelix Fietkau ret++; 3224a7022e65SFelix Fietkau } 3225a7022e65SFelix Fietkau 3226a7022e65SFelix Fietkau if (ret) 3227a7022e65SFelix Fietkau ieee80211_update_p2p_noa(data, tsf); 3228a7022e65SFelix Fietkau 3229a7022e65SFelix Fietkau return ret; 3230a7022e65SFelix Fietkau } 3231a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 3232057d5f4bSThomas Pedersen 3233057d5f4bSThomas Pedersen void ieee80211_recalc_dtim(struct ieee80211_local *local, 3234057d5f4bSThomas Pedersen struct ieee80211_sub_if_data *sdata) 3235057d5f4bSThomas Pedersen { 3236057d5f4bSThomas Pedersen u64 tsf = drv_get_tsf(local, sdata); 3237057d5f4bSThomas Pedersen u64 dtim_count = 0; 3238057d5f4bSThomas Pedersen u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 3239057d5f4bSThomas Pedersen u8 dtim_period = sdata->vif.bss_conf.dtim_period; 3240057d5f4bSThomas Pedersen struct ps_data *ps; 3241057d5f4bSThomas Pedersen u8 bcns_from_dtim; 3242057d5f4bSThomas Pedersen 3243057d5f4bSThomas Pedersen if (tsf == -1ULL || !beacon_int || !dtim_period) 3244057d5f4bSThomas Pedersen return; 3245057d5f4bSThomas Pedersen 3246057d5f4bSThomas Pedersen if (sdata->vif.type == NL80211_IFTYPE_AP || 3247057d5f4bSThomas Pedersen sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 3248057d5f4bSThomas Pedersen if (!sdata->bss) 3249057d5f4bSThomas Pedersen return; 3250057d5f4bSThomas Pedersen 3251057d5f4bSThomas Pedersen ps = &sdata->bss->ps; 3252057d5f4bSThomas Pedersen } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 3253057d5f4bSThomas Pedersen ps = &sdata->u.mesh.ps; 3254057d5f4bSThomas Pedersen } else { 3255057d5f4bSThomas Pedersen return; 3256057d5f4bSThomas Pedersen } 3257057d5f4bSThomas Pedersen 3258057d5f4bSThomas Pedersen /* 3259057d5f4bSThomas Pedersen * actually finds last dtim_count, mac80211 will update in 3260057d5f4bSThomas Pedersen * __beacon_add_tim(). 3261057d5f4bSThomas Pedersen * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 3262057d5f4bSThomas Pedersen */ 3263057d5f4bSThomas Pedersen do_div(tsf, beacon_int); 3264057d5f4bSThomas Pedersen bcns_from_dtim = do_div(tsf, dtim_period); 3265057d5f4bSThomas Pedersen /* just had a DTIM */ 3266057d5f4bSThomas Pedersen if (!bcns_from_dtim) 3267057d5f4bSThomas Pedersen dtim_count = 0; 3268057d5f4bSThomas Pedersen else 3269057d5f4bSThomas Pedersen dtim_count = dtim_period - bcns_from_dtim; 3270057d5f4bSThomas Pedersen 3271057d5f4bSThomas Pedersen ps->dtim_count = dtim_count; 3272057d5f4bSThomas Pedersen } 327373de86a3SLuciano Coelho 327471e6195eSMichal Kazior static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 327571e6195eSMichal Kazior struct ieee80211_chanctx *ctx) 327671e6195eSMichal Kazior { 327771e6195eSMichal Kazior struct ieee80211_sub_if_data *sdata; 327871e6195eSMichal Kazior u8 radar_detect = 0; 327971e6195eSMichal Kazior 328071e6195eSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 328171e6195eSMichal Kazior 328271e6195eSMichal Kazior if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 328371e6195eSMichal Kazior return 0; 328471e6195eSMichal Kazior 328571e6195eSMichal Kazior list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) 328671e6195eSMichal Kazior if (sdata->reserved_radar_required) 328771e6195eSMichal Kazior radar_detect |= BIT(sdata->reserved_chandef.width); 328871e6195eSMichal Kazior 328971e6195eSMichal Kazior /* 329071e6195eSMichal Kazior * An in-place reservation context should not have any assigned vifs 329171e6195eSMichal Kazior * until it replaces the other context. 329271e6195eSMichal Kazior */ 329371e6195eSMichal Kazior WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 329471e6195eSMichal Kazior !list_empty(&ctx->assigned_vifs)); 329571e6195eSMichal Kazior 329671e6195eSMichal Kazior list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) 329771e6195eSMichal Kazior if (sdata->radar_required) 329871e6195eSMichal Kazior radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); 329971e6195eSMichal Kazior 330071e6195eSMichal Kazior return radar_detect; 330171e6195eSMichal Kazior } 330271e6195eSMichal Kazior 330373de86a3SLuciano Coelho int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 330473de86a3SLuciano Coelho const struct cfg80211_chan_def *chandef, 330573de86a3SLuciano Coelho enum ieee80211_chanctx_mode chanmode, 330673de86a3SLuciano Coelho u8 radar_detect) 330773de86a3SLuciano Coelho { 330873de86a3SLuciano Coelho struct ieee80211_local *local = sdata->local; 330973de86a3SLuciano Coelho struct ieee80211_sub_if_data *sdata_iter; 331073de86a3SLuciano Coelho enum nl80211_iftype iftype = sdata->wdev.iftype; 331173de86a3SLuciano Coelho struct ieee80211_chanctx *ctx; 331273de86a3SLuciano Coelho int total = 1; 3313e227300cSPurushottam Kushwaha struct iface_combination_params params = { 3314e227300cSPurushottam Kushwaha .radar_detect = radar_detect, 3315e227300cSPurushottam Kushwaha }; 331673de86a3SLuciano Coelho 331773de86a3SLuciano Coelho lockdep_assert_held(&local->chanctx_mtx); 331873de86a3SLuciano Coelho 331973de86a3SLuciano Coelho if (WARN_ON(hweight32(radar_detect) > 1)) 332073de86a3SLuciano Coelho return -EINVAL; 332173de86a3SLuciano Coelho 3322b6a55015SLuciano Coelho if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 3323b6a55015SLuciano Coelho !chandef->chan)) 332473de86a3SLuciano Coelho return -EINVAL; 332573de86a3SLuciano Coelho 332673de86a3SLuciano Coelho if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 332773de86a3SLuciano Coelho return -EINVAL; 332873de86a3SLuciano Coelho 3329ac668afeSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP || 3330ac668afeSJohannes Berg sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 3331ac668afeSJohannes Berg /* 3332ac668afeSJohannes Berg * always passing this is harmless, since it'll be the 3333ac668afeSJohannes Berg * same value that cfg80211 finds if it finds the same 3334ac668afeSJohannes Berg * interface ... and that's always allowed 3335ac668afeSJohannes Berg */ 3336ac668afeSJohannes Berg params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 3337ac668afeSJohannes Berg } 3338ac668afeSJohannes Berg 333973de86a3SLuciano Coelho /* Always allow software iftypes */ 334073de86a3SLuciano Coelho if (local->hw.wiphy->software_iftypes & BIT(iftype)) { 334173de86a3SLuciano Coelho if (radar_detect) 334273de86a3SLuciano Coelho return -EINVAL; 334373de86a3SLuciano Coelho return 0; 334473de86a3SLuciano Coelho } 334573de86a3SLuciano Coelho 3346e227300cSPurushottam Kushwaha if (chandef) 3347e227300cSPurushottam Kushwaha params.num_different_channels = 1; 334873de86a3SLuciano Coelho 334973de86a3SLuciano Coelho if (iftype != NL80211_IFTYPE_UNSPECIFIED) 3350e227300cSPurushottam Kushwaha params.iftype_num[iftype] = 1; 335173de86a3SLuciano Coelho 335273de86a3SLuciano Coelho list_for_each_entry(ctx, &local->chanctx_list, list) { 33535bcae31dSMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 33545bcae31dSMichal Kazior continue; 3355e227300cSPurushottam Kushwaha params.radar_detect |= 3356e227300cSPurushottam Kushwaha ieee80211_chanctx_radar_detect(local, ctx); 335773de86a3SLuciano Coelho if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 3358e227300cSPurushottam Kushwaha params.num_different_channels++; 335973de86a3SLuciano Coelho continue; 336073de86a3SLuciano Coelho } 3361b6a55015SLuciano Coelho if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 336273de86a3SLuciano Coelho cfg80211_chandef_compatible(chandef, 336373de86a3SLuciano Coelho &ctx->conf.def)) 336473de86a3SLuciano Coelho continue; 3365e227300cSPurushottam Kushwaha params.num_different_channels++; 336673de86a3SLuciano Coelho } 336773de86a3SLuciano Coelho 336873de86a3SLuciano Coelho list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 336973de86a3SLuciano Coelho struct wireless_dev *wdev_iter; 337073de86a3SLuciano Coelho 337173de86a3SLuciano Coelho wdev_iter = &sdata_iter->wdev; 337273de86a3SLuciano Coelho 337373de86a3SLuciano Coelho if (sdata_iter == sdata || 33740f611d28SAndrei Otcheretianski !ieee80211_sdata_running(sdata_iter) || 337573de86a3SLuciano Coelho local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) 337673de86a3SLuciano Coelho continue; 337773de86a3SLuciano Coelho 3378e227300cSPurushottam Kushwaha params.iftype_num[wdev_iter->iftype]++; 337973de86a3SLuciano Coelho total++; 338073de86a3SLuciano Coelho } 338173de86a3SLuciano Coelho 3382e227300cSPurushottam Kushwaha if (total == 1 && !params.radar_detect) 338373de86a3SLuciano Coelho return 0; 338473de86a3SLuciano Coelho 3385e227300cSPurushottam Kushwaha return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 338673de86a3SLuciano Coelho } 33876fa001bcSMichal Kazior 33886fa001bcSMichal Kazior static void 33896fa001bcSMichal Kazior ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 33906fa001bcSMichal Kazior void *data) 33916fa001bcSMichal Kazior { 33926fa001bcSMichal Kazior u32 *max_num_different_channels = data; 33936fa001bcSMichal Kazior 33946fa001bcSMichal Kazior *max_num_different_channels = max(*max_num_different_channels, 33956fa001bcSMichal Kazior c->num_different_channels); 33966fa001bcSMichal Kazior } 33976fa001bcSMichal Kazior 33986fa001bcSMichal Kazior int ieee80211_max_num_channels(struct ieee80211_local *local) 33996fa001bcSMichal Kazior { 34006fa001bcSMichal Kazior struct ieee80211_sub_if_data *sdata; 34016fa001bcSMichal Kazior struct ieee80211_chanctx *ctx; 34026fa001bcSMichal Kazior u32 max_num_different_channels = 1; 34036fa001bcSMichal Kazior int err; 3404e227300cSPurushottam Kushwaha struct iface_combination_params params = {0}; 34056fa001bcSMichal Kazior 34066fa001bcSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 34076fa001bcSMichal Kazior 34086fa001bcSMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 34095bcae31dSMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 34105bcae31dSMichal Kazior continue; 34115bcae31dSMichal Kazior 3412e227300cSPurushottam Kushwaha params.num_different_channels++; 34136fa001bcSMichal Kazior 3414e227300cSPurushottam Kushwaha params.radar_detect |= 3415e227300cSPurushottam Kushwaha ieee80211_chanctx_radar_detect(local, ctx); 34166fa001bcSMichal Kazior } 34176fa001bcSMichal Kazior 34186fa001bcSMichal Kazior list_for_each_entry_rcu(sdata, &local->interfaces, list) 3419e227300cSPurushottam Kushwaha params.iftype_num[sdata->wdev.iftype]++; 34206fa001bcSMichal Kazior 3421e227300cSPurushottam Kushwaha err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 3422e227300cSPurushottam Kushwaha ieee80211_iter_max_chans, 34236fa001bcSMichal Kazior &max_num_different_channels); 34246fa001bcSMichal Kazior if (err < 0) 34256fa001bcSMichal Kazior return err; 34266fa001bcSMichal Kazior 34276fa001bcSMichal Kazior return max_num_different_channels; 34286fa001bcSMichal Kazior } 342940b861a0SArik Nemtsov 343040b861a0SArik Nemtsov u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 343140b861a0SArik Nemtsov { 343240b861a0SArik Nemtsov *buf++ = WLAN_EID_VENDOR_SPECIFIC; 343340b861a0SArik Nemtsov *buf++ = 7; /* len */ 343440b861a0SArik Nemtsov *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 343540b861a0SArik Nemtsov *buf++ = 0x50; 343640b861a0SArik Nemtsov *buf++ = 0xf2; 343740b861a0SArik Nemtsov *buf++ = 2; /* WME */ 343840b861a0SArik Nemtsov *buf++ = 0; /* WME info */ 343940b861a0SArik Nemtsov *buf++ = 1; /* WME ver */ 344040b861a0SArik Nemtsov *buf++ = qosinfo; /* U-APSD no in use */ 344140b861a0SArik Nemtsov 344240b861a0SArik Nemtsov return buf; 344340b861a0SArik Nemtsov } 3444ba8c3d6fSFelix Fietkau 3445f2ac7e30SMichal Kazior void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 3446f2ac7e30SMichal Kazior unsigned long *frame_cnt, 3447f2ac7e30SMichal Kazior unsigned long *byte_cnt) 3448f2ac7e30SMichal Kazior { 3449f2ac7e30SMichal Kazior struct txq_info *txqi = to_txq_info(txq); 3450bb42f2d1SToke Høiland-Jørgensen u32 frag_cnt = 0, frag_bytes = 0; 3451bb42f2d1SToke Høiland-Jørgensen struct sk_buff *skb; 3452bb42f2d1SToke Høiland-Jørgensen 3453bb42f2d1SToke Høiland-Jørgensen skb_queue_walk(&txqi->frags, skb) { 3454bb42f2d1SToke Høiland-Jørgensen frag_cnt++; 3455bb42f2d1SToke Høiland-Jørgensen frag_bytes += skb->len; 3456bb42f2d1SToke Høiland-Jørgensen } 3457f2ac7e30SMichal Kazior 3458f2ac7e30SMichal Kazior if (frame_cnt) 3459bb42f2d1SToke Høiland-Jørgensen *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 3460f2ac7e30SMichal Kazior 3461f2ac7e30SMichal Kazior if (byte_cnt) 3462bb42f2d1SToke Høiland-Jørgensen *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 3463f2ac7e30SMichal Kazior } 3464f2ac7e30SMichal Kazior EXPORT_SYMBOL(ieee80211_txq_get_depth); 3465f438ceb8SEmmanuel Grumbach 3466f438ceb8SEmmanuel Grumbach const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 3467f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 3468f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 3469f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 3470f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 3471f438ceb8SEmmanuel Grumbach }; 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