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 7da6a4352SJohannes Berg * Copyright (C) 2015-2017 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: 831e38a017bSAvraham Stern case WLAN_EID_BSS_MAX_IDLE_PERIOD: 832b2e506bfSJohannes Berg /* 833b2e506bfSJohannes Berg * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible 834b2e506bfSJohannes Berg * that if the content gets bigger it might be needed more than once 835b2e506bfSJohannes Berg */ 8369690fb16SJohannes Berg if (test_bit(id, seen_elems)) { 837fcff4f10SPaul Stewart elems->parse_error = true; 838fcff4f10SPaul Stewart left -= elen; 839fcff4f10SPaul Stewart pos += elen; 840fcff4f10SPaul Stewart continue; 841fcff4f10SPaul Stewart } 8429690fb16SJohannes Berg break; 8439690fb16SJohannes Berg } 844dd76986bSJohannes Berg 845dd76986bSJohannes Berg if (calc_crc && id < 64 && (filter & (1ULL << id))) 846dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 847dd76986bSJohannes Berg 848fcff4f10SPaul Stewart elem_parse_failed = false; 849fcff4f10SPaul Stewart 850dd76986bSJohannes Berg switch (id) { 85153837584SArik Nemtsov case WLAN_EID_LINK_ID: 85253837584SArik Nemtsov if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { 85353837584SArik Nemtsov elem_parse_failed = true; 85453837584SArik Nemtsov break; 85553837584SArik Nemtsov } 85653837584SArik Nemtsov elems->lnk_id = (void *)(pos - 2); 85753837584SArik Nemtsov break; 85853837584SArik Nemtsov case WLAN_EID_CHAN_SWITCH_TIMING: 85953837584SArik Nemtsov if (elen != sizeof(struct ieee80211_ch_switch_timing)) { 86053837584SArik Nemtsov elem_parse_failed = true; 86153837584SArik Nemtsov break; 86253837584SArik Nemtsov } 86353837584SArik Nemtsov elems->ch_sw_timing = (void *)pos; 86453837584SArik Nemtsov break; 8659041c1faSArik Nemtsov case WLAN_EID_EXT_CAPABILITY: 8669041c1faSArik Nemtsov elems->ext_capab = pos; 8679041c1faSArik Nemtsov elems->ext_capab_len = elen; 8689041c1faSArik Nemtsov break; 869dd76986bSJohannes Berg case WLAN_EID_SSID: 870dd76986bSJohannes Berg elems->ssid = pos; 871dd76986bSJohannes Berg elems->ssid_len = elen; 872dd76986bSJohannes Berg break; 873dd76986bSJohannes Berg case WLAN_EID_SUPP_RATES: 874dd76986bSJohannes Berg elems->supp_rates = pos; 875dd76986bSJohannes Berg elems->supp_rates_len = elen; 876dd76986bSJohannes Berg break; 877dd76986bSJohannes Berg case WLAN_EID_DS_PARAMS: 8781cd8e88eSJohannes Berg if (elen >= 1) 879dd76986bSJohannes Berg elems->ds_params = pos; 8801cd8e88eSJohannes Berg else 8811cd8e88eSJohannes Berg elem_parse_failed = true; 882dd76986bSJohannes Berg break; 883dd76986bSJohannes Berg case WLAN_EID_TIM: 884dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_tim_ie)) { 885dd76986bSJohannes Berg elems->tim = (void *)pos; 886dd76986bSJohannes Berg elems->tim_len = elen; 887fcff4f10SPaul Stewart } else 888fcff4f10SPaul Stewart elem_parse_failed = true; 889dd76986bSJohannes Berg break; 890dd76986bSJohannes Berg case WLAN_EID_CHALLENGE: 891dd76986bSJohannes Berg elems->challenge = pos; 892dd76986bSJohannes Berg elems->challenge_len = elen; 893dd76986bSJohannes Berg break; 894dd76986bSJohannes Berg case WLAN_EID_VENDOR_SPECIFIC: 895dd76986bSJohannes Berg if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && 896dd76986bSJohannes Berg pos[2] == 0xf2) { 897dd76986bSJohannes Berg /* Microsoft OUI (00:50:F2) */ 898dd76986bSJohannes Berg 899dd76986bSJohannes Berg if (calc_crc) 900dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 901dd76986bSJohannes Berg 902441a33baSJohannes Berg if (elen >= 5 && pos[3] == 2) { 903dd76986bSJohannes Berg /* OUI Type 2 - WMM IE */ 904dd76986bSJohannes Berg if (pos[4] == 0) { 905dd76986bSJohannes Berg elems->wmm_info = pos; 906dd76986bSJohannes Berg elems->wmm_info_len = elen; 907dd76986bSJohannes Berg } else if (pos[4] == 1) { 908dd76986bSJohannes Berg elems->wmm_param = pos; 909dd76986bSJohannes Berg elems->wmm_param_len = elen; 910dd76986bSJohannes Berg } 911dd76986bSJohannes Berg } 912dd76986bSJohannes Berg } 913dd76986bSJohannes Berg break; 914dd76986bSJohannes Berg case WLAN_EID_RSN: 915dd76986bSJohannes Berg elems->rsn = pos; 916dd76986bSJohannes Berg elems->rsn_len = elen; 917dd76986bSJohannes Berg break; 918dd76986bSJohannes Berg case WLAN_EID_ERP_INFO: 9191946bed9SJohannes Berg if (elen >= 1) 920dd76986bSJohannes Berg elems->erp_info = pos; 9211946bed9SJohannes Berg else 9221946bed9SJohannes Berg elem_parse_failed = true; 923dd76986bSJohannes Berg break; 924dd76986bSJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 925dd76986bSJohannes Berg elems->ext_supp_rates = pos; 926dd76986bSJohannes Berg elems->ext_supp_rates_len = elen; 927dd76986bSJohannes Berg break; 928dd76986bSJohannes Berg case WLAN_EID_HT_CAPABILITY: 929dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_ht_cap)) 930dd76986bSJohannes Berg elems->ht_cap_elem = (void *)pos; 931fcff4f10SPaul Stewart else 932fcff4f10SPaul Stewart elem_parse_failed = true; 933dd76986bSJohannes Berg break; 934074d46d1SJohannes Berg case WLAN_EID_HT_OPERATION: 935074d46d1SJohannes Berg if (elen >= sizeof(struct ieee80211_ht_operation)) 936074d46d1SJohannes Berg elems->ht_operation = (void *)pos; 937fcff4f10SPaul Stewart else 938fcff4f10SPaul Stewart elem_parse_failed = true; 939dd76986bSJohannes Berg break; 940818255eaSMahesh Palivela case WLAN_EID_VHT_CAPABILITY: 941818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_cap)) 942818255eaSMahesh Palivela elems->vht_cap_elem = (void *)pos; 943818255eaSMahesh Palivela else 944818255eaSMahesh Palivela elem_parse_failed = true; 945818255eaSMahesh Palivela break; 946818255eaSMahesh Palivela case WLAN_EID_VHT_OPERATION: 947818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_operation)) 948818255eaSMahesh Palivela elems->vht_operation = (void *)pos; 949818255eaSMahesh Palivela else 950818255eaSMahesh Palivela elem_parse_failed = true; 951818255eaSMahesh Palivela break; 952bee7f586SJohannes Berg case WLAN_EID_OPMODE_NOTIF: 953bee7f586SJohannes Berg if (elen > 0) 954bee7f586SJohannes Berg elems->opmode_notif = pos; 955bee7f586SJohannes Berg else 956bee7f586SJohannes Berg elem_parse_failed = true; 957bee7f586SJohannes Berg break; 958dd76986bSJohannes Berg case WLAN_EID_MESH_ID: 959dd76986bSJohannes Berg elems->mesh_id = pos; 960dd76986bSJohannes Berg elems->mesh_id_len = elen; 961dd76986bSJohannes Berg break; 962dd76986bSJohannes Berg case WLAN_EID_MESH_CONFIG: 963dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_meshconf_ie)) 964dd76986bSJohannes Berg elems->mesh_config = (void *)pos; 965fcff4f10SPaul Stewart else 966fcff4f10SPaul Stewart elem_parse_failed = true; 967dd76986bSJohannes Berg break; 968dd76986bSJohannes Berg case WLAN_EID_PEER_MGMT: 969dd76986bSJohannes Berg elems->peering = pos; 970dd76986bSJohannes Berg elems->peering_len = elen; 971dd76986bSJohannes Berg break; 9723f52b7e3SMarco Porsch case WLAN_EID_MESH_AWAKE_WINDOW: 9733f52b7e3SMarco Porsch if (elen >= 2) 9743f52b7e3SMarco Porsch elems->awake_window = (void *)pos; 9753f52b7e3SMarco Porsch break; 976dd76986bSJohannes Berg case WLAN_EID_PREQ: 977dd76986bSJohannes Berg elems->preq = pos; 978dd76986bSJohannes Berg elems->preq_len = elen; 979dd76986bSJohannes Berg break; 980dd76986bSJohannes Berg case WLAN_EID_PREP: 981dd76986bSJohannes Berg elems->prep = pos; 982dd76986bSJohannes Berg elems->prep_len = elen; 983dd76986bSJohannes Berg break; 984dd76986bSJohannes Berg case WLAN_EID_PERR: 985dd76986bSJohannes Berg elems->perr = pos; 986dd76986bSJohannes Berg elems->perr_len = elen; 987dd76986bSJohannes Berg break; 988dd76986bSJohannes Berg case WLAN_EID_RANN: 989dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_rann_ie)) 990dd76986bSJohannes Berg elems->rann = (void *)pos; 991fcff4f10SPaul Stewart else 992fcff4f10SPaul Stewart elem_parse_failed = true; 993dd76986bSJohannes Berg break; 994dd76986bSJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 9955bc1420bSJohannes Berg if (elen != sizeof(struct ieee80211_channel_sw_ie)) { 9965bc1420bSJohannes Berg elem_parse_failed = true; 9975bc1420bSJohannes Berg break; 9985bc1420bSJohannes Berg } 9995bc1420bSJohannes Berg elems->ch_switch_ie = (void *)pos; 1000dd76986bSJohannes Berg break; 1001b4f286a1SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 1002b4f286a1SJohannes Berg if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { 1003b4f286a1SJohannes Berg elem_parse_failed = true; 1004b4f286a1SJohannes Berg break; 1005b4f286a1SJohannes Berg } 1006b4f286a1SJohannes Berg elems->ext_chansw_ie = (void *)pos; 1007b4f286a1SJohannes Berg break; 100885220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 100985220d71SJohannes Berg if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { 101085220d71SJohannes Berg elem_parse_failed = true; 101185220d71SJohannes Berg break; 101285220d71SJohannes Berg } 101385220d71SJohannes Berg elems->sec_chan_offs = (void *)pos; 101485220d71SJohannes Berg break; 10158f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 10168f2535b9SChun-Yeow Yeoh if (elen != 10178f2535b9SChun-Yeow Yeoh sizeof(*elems->mesh_chansw_params_ie)) { 10188f2535b9SChun-Yeow Yeoh elem_parse_failed = true; 10198f2535b9SChun-Yeow Yeoh break; 10208f2535b9SChun-Yeow Yeoh } 10218f2535b9SChun-Yeow Yeoh elems->mesh_chansw_params_ie = (void *)pos; 10228f2535b9SChun-Yeow Yeoh break; 1023b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 1024b2e506bfSJohannes Berg if (!action || 1025b2e506bfSJohannes Berg elen != sizeof(*elems->wide_bw_chansw_ie)) { 1026b2e506bfSJohannes Berg elem_parse_failed = true; 1027b2e506bfSJohannes Berg break; 1028b2e506bfSJohannes Berg } 1029b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = (void *)pos; 1030b2e506bfSJohannes Berg break; 1031b2e506bfSJohannes Berg case WLAN_EID_CHANNEL_SWITCH_WRAPPER: 1032b2e506bfSJohannes Berg if (action) { 1033b2e506bfSJohannes Berg elem_parse_failed = true; 1034b2e506bfSJohannes Berg break; 1035b2e506bfSJohannes Berg } 1036b2e506bfSJohannes Berg /* 1037b2e506bfSJohannes Berg * This is a bit tricky, but as we only care about 1038b2e506bfSJohannes Berg * the wide bandwidth channel switch element, so 1039b2e506bfSJohannes Berg * just parse it out manually. 1040b2e506bfSJohannes Berg */ 1041b2e506bfSJohannes Berg ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, 1042b2e506bfSJohannes Berg pos, elen); 1043b2e506bfSJohannes Berg if (ie) { 1044b2e506bfSJohannes Berg if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) 1045b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = 1046b2e506bfSJohannes Berg (void *)(ie + 2); 1047b2e506bfSJohannes Berg else 1048b2e506bfSJohannes Berg elem_parse_failed = true; 1049b2e506bfSJohannes Berg } 1050b2e506bfSJohannes Berg break; 1051dd76986bSJohannes Berg case WLAN_EID_COUNTRY: 1052dd76986bSJohannes Berg elems->country_elem = pos; 1053dd76986bSJohannes Berg elems->country_elem_len = elen; 1054dd76986bSJohannes Berg break; 1055dd76986bSJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 1056761a48d2SJohannes Berg if (elen != 1) { 1057761a48d2SJohannes Berg elem_parse_failed = true; 1058761a48d2SJohannes Berg break; 1059761a48d2SJohannes Berg } 1060dd76986bSJohannes Berg elems->pwr_constr_elem = pos; 1061dd76986bSJohannes Berg break; 1062c8d65917SSteinar H. Gunderson case WLAN_EID_CISCO_VENDOR_SPECIFIC: 1063c8d65917SSteinar H. Gunderson /* Lots of different options exist, but we only care 1064c8d65917SSteinar H. Gunderson * about the Dynamic Transmit Power Control element. 1065c8d65917SSteinar H. Gunderson * First check for the Cisco OUI, then for the DTPC 1066c8d65917SSteinar H. Gunderson * tag (0x00). 1067c8d65917SSteinar H. Gunderson */ 1068c8d65917SSteinar H. Gunderson if (elen < 4) { 1069c8d65917SSteinar H. Gunderson elem_parse_failed = true; 1070c8d65917SSteinar H. Gunderson break; 1071c8d65917SSteinar H. Gunderson } 1072c8d65917SSteinar H. Gunderson 1073c8d65917SSteinar H. Gunderson if (pos[0] != 0x00 || pos[1] != 0x40 || 1074c8d65917SSteinar H. Gunderson pos[2] != 0x96 || pos[3] != 0x00) 1075c8d65917SSteinar H. Gunderson break; 1076c8d65917SSteinar H. Gunderson 1077c8d65917SSteinar H. Gunderson if (elen != 6) { 1078c8d65917SSteinar H. Gunderson elem_parse_failed = true; 1079c8d65917SSteinar H. Gunderson break; 1080c8d65917SSteinar H. Gunderson } 1081c8d65917SSteinar H. Gunderson 1082c8d65917SSteinar H. Gunderson if (calc_crc) 1083c8d65917SSteinar H. Gunderson crc = crc32_be(crc, pos - 2, elen + 2); 1084c8d65917SSteinar H. Gunderson 1085c8d65917SSteinar H. Gunderson elems->cisco_dtpc_elem = pos; 1086c8d65917SSteinar H. Gunderson break; 1087dd76986bSJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 108879ba1d89SJohannes Berg if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) 108979ba1d89SJohannes Berg elems->timeout_int = (void *)pos; 109079ba1d89SJohannes Berg else 109179ba1d89SJohannes Berg elem_parse_failed = true; 1092dd76986bSJohannes Berg break; 1093e38a017bSAvraham Stern case WLAN_EID_BSS_MAX_IDLE_PERIOD: 1094e38a017bSAvraham Stern if (elen >= sizeof(*elems->max_idle_period_ie)) 1095e38a017bSAvraham Stern elems->max_idle_period_ie = (void *)pos; 1096e38a017bSAvraham Stern break; 1097dd76986bSJohannes Berg default: 1098dd76986bSJohannes Berg break; 1099dd76986bSJohannes Berg } 1100dd76986bSJohannes Berg 1101fcff4f10SPaul Stewart if (elem_parse_failed) 1102fcff4f10SPaul Stewart elems->parse_error = true; 1103fcff4f10SPaul Stewart else 11045df45690SJohannes Berg __set_bit(id, seen_elems); 1105fcff4f10SPaul Stewart 1106dd76986bSJohannes Berg left -= elen; 1107dd76986bSJohannes Berg pos += elen; 1108dd76986bSJohannes Berg } 1109dd76986bSJohannes Berg 1110fcff4f10SPaul Stewart if (left != 0) 1111fcff4f10SPaul Stewart elems->parse_error = true; 1112fcff4f10SPaul Stewart 1113dd76986bSJohannes Berg return crc; 1114dd76986bSJohannes Berg } 1115dd76986bSJohannes Berg 11163abead59SJohannes Berg void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1117cec66283SJohannes Berg bool bss_notify, bool enable_qos) 11185825fe10SJohannes Berg { 11195825fe10SJohannes Berg struct ieee80211_local *local = sdata->local; 11205825fe10SJohannes Berg struct ieee80211_tx_queue_params qparam; 112155de908aSJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 112254bcbc69SJohannes Berg int ac; 1123cec66283SJohannes Berg bool use_11b; 1124239281f8SRostislav Lisovy bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1125aa837e1dSJohannes Berg int aCWmin, aCWmax; 11265825fe10SJohannes Berg 11275825fe10SJohannes Berg if (!local->ops->conf_tx) 11285825fe10SJohannes Berg return; 11295825fe10SJohannes Berg 113054bcbc69SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 113154bcbc69SJohannes Berg return; 113254bcbc69SJohannes Berg 11335825fe10SJohannes Berg memset(&qparam, 0, sizeof(qparam)); 11345825fe10SJohannes Berg 113555de908aSJohannes Berg rcu_read_lock(); 113655de908aSJohannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 113755de908aSJohannes Berg use_11b = (chanctx_conf && 113857fbcce3SJohannes Berg chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1139aa837e1dSJohannes Berg !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); 114055de908aSJohannes Berg rcu_read_unlock(); 11415825fe10SJohannes Berg 1142239281f8SRostislav Lisovy is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1143239281f8SRostislav Lisovy 1144aa837e1dSJohannes Berg /* Set defaults according to 802.11-2007 Table 7-37 */ 1145aa837e1dSJohannes Berg aCWmax = 1023; 1146aa837e1dSJohannes Berg if (use_11b) 1147aa837e1dSJohannes Berg aCWmin = 31; 11485825fe10SJohannes Berg else 1149aa837e1dSJohannes Berg aCWmin = 15; 11505825fe10SJohannes Berg 11511f4ffde8SFred Zhou /* Confiure old 802.11b/g medium access rules. */ 11521f4ffde8SFred Zhou qparam.cw_max = aCWmax; 11531f4ffde8SFred Zhou qparam.cw_min = aCWmin; 11541f4ffde8SFred Zhou qparam.txop = 0; 11551f4ffde8SFred Zhou qparam.aifs = 2; 11561f4ffde8SFred Zhou 11571f4ffde8SFred Zhou for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 11581f4ffde8SFred Zhou /* Update if QoS is enabled. */ 1159a8ce8544SStanislaw Gruszka if (enable_qos) { 116054bcbc69SJohannes Berg switch (ac) { 11611d98fb12SJohannes Berg case IEEE80211_AC_BK: 11627ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 11637ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 11645825fe10SJohannes Berg qparam.txop = 0; 1165239281f8SRostislav Lisovy if (is_ocb) 1166239281f8SRostislav Lisovy qparam.aifs = 9; 1167239281f8SRostislav Lisovy else 1168aa837e1dSJohannes Berg qparam.aifs = 7; 1169aa837e1dSJohannes Berg break; 1170a8ce8544SStanislaw Gruszka /* never happens but let's not leave undefined */ 1171a8ce8544SStanislaw Gruszka default: 11721d98fb12SJohannes Berg case IEEE80211_AC_BE: 11737ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 11747ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 1175aa837e1dSJohannes Berg qparam.txop = 0; 1176239281f8SRostislav Lisovy if (is_ocb) 1177239281f8SRostislav Lisovy qparam.aifs = 6; 1178239281f8SRostislav Lisovy else 1179aa837e1dSJohannes Berg qparam.aifs = 3; 1180aa837e1dSJohannes Berg break; 11811d98fb12SJohannes Berg case IEEE80211_AC_VI: 1182aa837e1dSJohannes Berg qparam.cw_max = aCWmin; 1183aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 2 - 1; 1184239281f8SRostislav Lisovy if (is_ocb) 1185239281f8SRostislav Lisovy qparam.txop = 0; 1186239281f8SRostislav Lisovy else if (use_11b) 1187aa837e1dSJohannes Berg qparam.txop = 6016/32; 1188aa837e1dSJohannes Berg else 1189aa837e1dSJohannes Berg qparam.txop = 3008/32; 1190239281f8SRostislav Lisovy 1191239281f8SRostislav Lisovy if (is_ocb) 1192239281f8SRostislav Lisovy qparam.aifs = 3; 1193239281f8SRostislav Lisovy else 1194aa837e1dSJohannes Berg qparam.aifs = 2; 1195aa837e1dSJohannes Berg break; 11961d98fb12SJohannes Berg case IEEE80211_AC_VO: 1197aa837e1dSJohannes Berg qparam.cw_max = (aCWmin + 1) / 2 - 1; 1198aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 4 - 1; 1199239281f8SRostislav Lisovy if (is_ocb) 1200239281f8SRostislav Lisovy qparam.txop = 0; 1201239281f8SRostislav Lisovy else if (use_11b) 1202aa837e1dSJohannes Berg qparam.txop = 3264/32; 1203aa837e1dSJohannes Berg else 1204aa837e1dSJohannes Berg qparam.txop = 1504/32; 1205aa837e1dSJohannes Berg qparam.aifs = 2; 1206aa837e1dSJohannes Berg break; 1207aa837e1dSJohannes Berg } 1208a8ce8544SStanislaw Gruszka } 12095825fe10SJohannes Berg 1210ab13315aSKalle Valo qparam.uapsd = false; 1211ab13315aSKalle Valo 121254bcbc69SJohannes Berg sdata->tx_conf[ac] = qparam; 121354bcbc69SJohannes Berg drv_conf_tx(local, sdata, ac, &qparam); 1214aa837e1dSJohannes Berg } 1215e1b3ec1aSStanislaw Gruszka 1216f142c6b9SJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1217708d50edSAyala Beker sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1218708d50edSAyala Beker sdata->vif.type != NL80211_IFTYPE_NAN) { 1219a8ce8544SStanislaw Gruszka sdata->vif.bss_conf.qos = enable_qos; 12203abead59SJohannes Berg if (bss_notify) 12213abead59SJohannes Berg ieee80211_bss_info_change_notify(sdata, 12223abead59SJohannes Berg BSS_CHANGED_QOS); 12235825fe10SJohannes Berg } 1224d9734979SSujith } 1225e50db65cSJohannes Berg 122646900298SJohannes Berg void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1227700e8ea6SJouni Malinen u16 transaction, u16 auth_alg, u16 status, 12284a3cb702SJohannes Berg const u8 *extra, size_t extra_len, const u8 *da, 12291672c0e3SJohannes Berg const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 12301672c0e3SJohannes Berg u32 tx_flags) 123146900298SJohannes Berg { 123246900298SJohannes Berg struct ieee80211_local *local = sdata->local; 123346900298SJohannes Berg struct sk_buff *skb; 123446900298SJohannes Berg struct ieee80211_mgmt *mgmt; 1235fffd0934SJohannes Berg int err; 123646900298SJohannes Berg 123715e230abSFred Zhou /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1238744462a9SMax Stepanov skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1239744462a9SMax Stepanov 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); 1240d15b8459SJoe Perches if (!skb) 124146900298SJohannes Berg return; 1242d15b8459SJoe Perches 1243744462a9SMax Stepanov skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 124446900298SJohannes Berg 124546900298SJohannes Berg mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); 124646900298SJohannes Berg memset(mgmt, 0, 24 + 6); 124746900298SJohannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 124846900298SJohannes Berg IEEE80211_STYPE_AUTH); 1249efa6a09dSAntonio Quartulli memcpy(mgmt->da, da, ETH_ALEN); 125047846c9bSJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 125146900298SJohannes Berg memcpy(mgmt->bssid, bssid, ETH_ALEN); 125246900298SJohannes Berg mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 125346900298SJohannes Berg mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1254700e8ea6SJouni Malinen mgmt->u.auth.status_code = cpu_to_le16(status); 125546900298SJohannes Berg if (extra) 125646900298SJohannes Berg memcpy(skb_put(skb, extra_len), extra, extra_len); 125746900298SJohannes Berg 1258fffd0934SJohannes Berg if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1259fffd0934SJohannes Berg mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1260fffd0934SJohannes Berg err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1261fffd0934SJohannes Berg WARN_ON(err); 1262fffd0934SJohannes Berg } 1263fffd0934SJohannes Berg 12641672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 12651672c0e3SJohannes Berg tx_flags; 126662ae67beSJohannes Berg ieee80211_tx_skb(sdata, skb); 126746900298SJohannes Berg } 126846900298SJohannes Berg 12696ae16775SAntonio Quartulli void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 12706ae16775SAntonio Quartulli const u8 *bssid, u16 stype, u16 reason, 12716ae16775SAntonio Quartulli bool send_frame, u8 *frame_buf) 12726ae16775SAntonio Quartulli { 12736ae16775SAntonio Quartulli struct ieee80211_local *local = sdata->local; 12746ae16775SAntonio Quartulli struct sk_buff *skb; 12756ae16775SAntonio Quartulli struct ieee80211_mgmt *mgmt = (void *)frame_buf; 12766ae16775SAntonio Quartulli 12776ae16775SAntonio Quartulli /* build frame */ 12786ae16775SAntonio Quartulli mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 12796ae16775SAntonio Quartulli mgmt->duration = 0; /* initialize only */ 12806ae16775SAntonio Quartulli mgmt->seq_ctrl = 0; /* initialize only */ 12816ae16775SAntonio Quartulli memcpy(mgmt->da, bssid, ETH_ALEN); 12826ae16775SAntonio Quartulli memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 12836ae16775SAntonio Quartulli memcpy(mgmt->bssid, bssid, ETH_ALEN); 12846ae16775SAntonio Quartulli /* u.deauth.reason_code == u.disassoc.reason_code */ 12856ae16775SAntonio Quartulli mgmt->u.deauth.reason_code = cpu_to_le16(reason); 12866ae16775SAntonio Quartulli 12876ae16775SAntonio Quartulli if (send_frame) { 12886ae16775SAntonio Quartulli skb = dev_alloc_skb(local->hw.extra_tx_headroom + 12896ae16775SAntonio Quartulli IEEE80211_DEAUTH_FRAME_LEN); 12906ae16775SAntonio Quartulli if (!skb) 12916ae16775SAntonio Quartulli return; 12926ae16775SAntonio Quartulli 12936ae16775SAntonio Quartulli skb_reserve(skb, local->hw.extra_tx_headroom); 12946ae16775SAntonio Quartulli 12956ae16775SAntonio Quartulli /* copy in frame */ 12966ae16775SAntonio Quartulli memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), 12976ae16775SAntonio Quartulli mgmt, IEEE80211_DEAUTH_FRAME_LEN); 12986ae16775SAntonio Quartulli 12996ae16775SAntonio Quartulli if (sdata->vif.type != NL80211_IFTYPE_STATION || 13006ae16775SAntonio Quartulli !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 13016ae16775SAntonio Quartulli IEEE80211_SKB_CB(skb)->flags |= 13026ae16775SAntonio Quartulli IEEE80211_TX_INTFL_DONT_ENCRYPT; 13036ae16775SAntonio Quartulli 13046ae16775SAntonio Quartulli ieee80211_tx_skb(sdata, skb); 13056ae16775SAntonio Quartulli } 13066ae16775SAntonio Quartulli } 13076ae16775SAntonio Quartulli 1308c56ef672SDavid Spinadel static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, 1309c56ef672SDavid Spinadel u8 *buffer, size_t buffer_len, 1310c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 131157fbcce3SJohannes Berg enum nl80211_band band, 1312c56ef672SDavid Spinadel u32 rate_mask, 1313c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef, 1314c56ef672SDavid Spinadel size_t *offset) 1315de95a54bSJohannes Berg { 1316de95a54bSJohannes Berg struct ieee80211_supported_band *sband; 1317c604b9f2SJohannes Berg u8 *pos = buffer, *end = buffer + buffer_len; 1318c56ef672SDavid Spinadel size_t noffset; 13198e664fb3SJohannes Berg int supp_rates_len, i; 13208dcb2003SJouni Malinen u8 rates[32]; 13218dcb2003SJouni Malinen int num_rates; 13228dcb2003SJouni Malinen int ext_rates_len; 13232103dec1SSimon Wunderlich int shift; 13242103dec1SSimon Wunderlich u32 rate_flags; 132540a11ca8SJohannes Berg bool have_80mhz = false; 1326de95a54bSJohannes Berg 1327c56ef672SDavid Spinadel *offset = 0; 1328c56ef672SDavid Spinadel 13294d36ec58SJohannes Berg sband = local->hw.wiphy->bands[band]; 1330d811b3d5SArik Nemtsov if (WARN_ON_ONCE(!sband)) 1331d811b3d5SArik Nemtsov return 0; 1332de95a54bSJohannes Berg 13332103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(chandef); 13342103dec1SSimon Wunderlich shift = ieee80211_chandef_get_shift(chandef); 13352103dec1SSimon Wunderlich 13368dcb2003SJouni Malinen num_rates = 0; 13378dcb2003SJouni Malinen for (i = 0; i < sband->n_bitrates; i++) { 13388dcb2003SJouni Malinen if ((BIT(i) & rate_mask) == 0) 13398dcb2003SJouni Malinen continue; /* skip rate */ 13402103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 13412103dec1SSimon Wunderlich continue; 13422103dec1SSimon Wunderlich 13432103dec1SSimon Wunderlich rates[num_rates++] = 13442103dec1SSimon Wunderlich (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 13452103dec1SSimon Wunderlich (1 << shift) * 5); 13468dcb2003SJouni Malinen } 13478dcb2003SJouni Malinen 13488dcb2003SJouni Malinen supp_rates_len = min_t(int, num_rates, 8); 13498e664fb3SJohannes Berg 1350c604b9f2SJohannes Berg if (end - pos < 2 + supp_rates_len) 1351c604b9f2SJohannes Berg goto out_err; 1352de95a54bSJohannes Berg *pos++ = WLAN_EID_SUPP_RATES; 13538e664fb3SJohannes Berg *pos++ = supp_rates_len; 13548dcb2003SJouni Malinen memcpy(pos, rates, supp_rates_len); 13558dcb2003SJouni Malinen pos += supp_rates_len; 1356de95a54bSJohannes Berg 13578e664fb3SJohannes Berg /* insert "request information" if in custom IEs */ 13588e664fb3SJohannes Berg if (ie && ie_len) { 13598e664fb3SJohannes Berg static const u8 before_extrates[] = { 13608e664fb3SJohannes Berg WLAN_EID_SSID, 13618e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 13628e664fb3SJohannes Berg WLAN_EID_REQUEST, 13638e664fb3SJohannes Berg }; 13648e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 13658e664fb3SJohannes Berg before_extrates, 13668e664fb3SJohannes Berg ARRAY_SIZE(before_extrates), 1367c56ef672SDavid Spinadel *offset); 1368c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1369c604b9f2SJohannes Berg goto out_err; 1370c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1371c56ef672SDavid Spinadel pos += noffset - *offset; 1372c56ef672SDavid Spinadel *offset = noffset; 13738e664fb3SJohannes Berg } 13748e664fb3SJohannes Berg 13758dcb2003SJouni Malinen ext_rates_len = num_rates - supp_rates_len; 13768dcb2003SJouni Malinen if (ext_rates_len > 0) { 1377c604b9f2SJohannes Berg if (end - pos < 2 + ext_rates_len) 1378c604b9f2SJohannes Berg goto out_err; 1379de95a54bSJohannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 13808dcb2003SJouni Malinen *pos++ = ext_rates_len; 13818dcb2003SJouni Malinen memcpy(pos, rates + supp_rates_len, ext_rates_len); 13828dcb2003SJouni Malinen pos += ext_rates_len; 13838e664fb3SJohannes Berg } 13848e664fb3SJohannes Berg 138557fbcce3SJohannes Berg if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1386c604b9f2SJohannes Berg if (end - pos < 3) 1387c604b9f2SJohannes Berg goto out_err; 1388651b5225SJouni Malinen *pos++ = WLAN_EID_DS_PARAMS; 1389651b5225SJouni Malinen *pos++ = 1; 13902103dec1SSimon Wunderlich *pos++ = ieee80211_frequency_to_channel( 13912103dec1SSimon Wunderlich chandef->chan->center_freq); 1392651b5225SJouni Malinen } 1393651b5225SJouni Malinen 13948e664fb3SJohannes Berg /* insert custom IEs that go before HT */ 13958e664fb3SJohannes Berg if (ie && ie_len) { 13968e664fb3SJohannes Berg static const u8 before_ht[] = { 13978e664fb3SJohannes Berg WLAN_EID_SSID, 13988e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 13998e664fb3SJohannes Berg WLAN_EID_REQUEST, 14008e664fb3SJohannes Berg WLAN_EID_EXT_SUPP_RATES, 14018e664fb3SJohannes Berg WLAN_EID_DS_PARAMS, 14028e664fb3SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 14038e664fb3SJohannes Berg }; 14048e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 14058e664fb3SJohannes Berg before_ht, ARRAY_SIZE(before_ht), 1406c56ef672SDavid Spinadel *offset); 1407c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1408c604b9f2SJohannes Berg goto out_err; 1409c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1410c56ef672SDavid Spinadel pos += noffset - *offset; 1411c56ef672SDavid Spinadel *offset = noffset; 1412de95a54bSJohannes Berg } 1413de95a54bSJohannes Berg 1414c604b9f2SJohannes Berg if (sband->ht_cap.ht_supported) { 1415c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) 1416c604b9f2SJohannes Berg goto out_err; 1417ef96a842SBen Greear pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1418ef96a842SBen Greear sband->ht_cap.cap); 1419c604b9f2SJohannes Berg } 14205ef2d41aSJohannes Berg 1421de95a54bSJohannes Berg /* 1422de95a54bSJohannes Berg * If adding more here, adjust code in main.c 1423de95a54bSJohannes Berg * that calculates local->scan_ies_len. 1424de95a54bSJohannes Berg */ 1425de95a54bSJohannes Berg 14264d952300SJohannes Berg /* insert custom IEs that go before VHT */ 14278e664fb3SJohannes Berg if (ie && ie_len) { 14284d952300SJohannes Berg static const u8 before_vht[] = { 14294d952300SJohannes Berg WLAN_EID_SSID, 14304d952300SJohannes Berg WLAN_EID_SUPP_RATES, 14314d952300SJohannes Berg WLAN_EID_REQUEST, 14324d952300SJohannes Berg WLAN_EID_EXT_SUPP_RATES, 14334d952300SJohannes Berg WLAN_EID_DS_PARAMS, 14344d952300SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 14354d952300SJohannes Berg WLAN_EID_HT_CAPABILITY, 14364d952300SJohannes Berg WLAN_EID_BSS_COEX_2040, 14374d952300SJohannes Berg WLAN_EID_EXT_CAPABILITY, 14384d952300SJohannes Berg WLAN_EID_SSID_LIST, 14394d952300SJohannes Berg WLAN_EID_CHANNEL_USAGE, 14404d952300SJohannes Berg WLAN_EID_INTERWORKING, 14414d952300SJohannes Berg /* mesh ID can't happen here */ 14424d952300SJohannes Berg /* 60 GHz can't happen here right now */ 14434d952300SJohannes Berg }; 14444d952300SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 14454d952300SJohannes Berg before_vht, ARRAY_SIZE(before_vht), 1446c56ef672SDavid Spinadel *offset); 1447c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1448c604b9f2SJohannes Berg goto out_err; 1449c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1450c56ef672SDavid Spinadel pos += noffset - *offset; 1451c56ef672SDavid Spinadel *offset = noffset; 1452de95a54bSJohannes Berg } 1453de95a54bSJohannes Berg 145440a11ca8SJohannes Berg /* Check if any channel in this sband supports at least 80 MHz */ 145540a11ca8SJohannes Berg for (i = 0; i < sband->n_channels; i++) { 1456fa44b988SArik Nemtsov if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1457fa44b988SArik Nemtsov IEEE80211_CHAN_NO_80MHZ)) 1458fa44b988SArik Nemtsov continue; 1459fa44b988SArik Nemtsov 146040a11ca8SJohannes Berg have_80mhz = true; 146140a11ca8SJohannes Berg break; 146240a11ca8SJohannes Berg } 146340a11ca8SJohannes Berg 146440a11ca8SJohannes Berg if (sband->vht_cap.vht_supported && have_80mhz) { 1465c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) 1466c604b9f2SJohannes Berg goto out_err; 1467ba0afa2fSMahesh Palivela pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1468ba0afa2fSMahesh Palivela sband->vht_cap.cap); 1469c604b9f2SJohannes Berg } 1470ba0afa2fSMahesh Palivela 1471de95a54bSJohannes Berg return pos - buffer; 1472c604b9f2SJohannes Berg out_err: 1473c604b9f2SJohannes Berg WARN_ONCE(1, "not enough space for preq IEs\n"); 1474c604b9f2SJohannes Berg return pos - buffer; 1475de95a54bSJohannes Berg } 1476de95a54bSJohannes Berg 1477c56ef672SDavid Spinadel int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1478c56ef672SDavid Spinadel size_t buffer_len, 1479c56ef672SDavid Spinadel struct ieee80211_scan_ies *ie_desc, 1480c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 1481c56ef672SDavid Spinadel u8 bands_used, u32 *rate_masks, 1482c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef) 1483c56ef672SDavid Spinadel { 1484c56ef672SDavid Spinadel size_t pos = 0, old_pos = 0, custom_ie_offset = 0; 1485c56ef672SDavid Spinadel int i; 1486c56ef672SDavid Spinadel 1487c56ef672SDavid Spinadel memset(ie_desc, 0, sizeof(*ie_desc)); 1488c56ef672SDavid Spinadel 148957fbcce3SJohannes Berg for (i = 0; i < NUM_NL80211_BANDS; i++) { 1490c56ef672SDavid Spinadel if (bands_used & BIT(i)) { 1491c56ef672SDavid Spinadel pos += ieee80211_build_preq_ies_band(local, 1492c56ef672SDavid Spinadel buffer + pos, 1493c56ef672SDavid Spinadel buffer_len - pos, 1494c56ef672SDavid Spinadel ie, ie_len, i, 1495c56ef672SDavid Spinadel rate_masks[i], 1496c56ef672SDavid Spinadel chandef, 1497c56ef672SDavid Spinadel &custom_ie_offset); 1498c56ef672SDavid Spinadel ie_desc->ies[i] = buffer + old_pos; 1499c56ef672SDavid Spinadel ie_desc->len[i] = pos - old_pos; 1500c56ef672SDavid Spinadel old_pos = pos; 1501c56ef672SDavid Spinadel } 1502c56ef672SDavid Spinadel } 1503c56ef672SDavid Spinadel 1504c56ef672SDavid Spinadel /* add any remaining custom IEs */ 1505c56ef672SDavid Spinadel if (ie && ie_len) { 1506c56ef672SDavid Spinadel if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, 1507c56ef672SDavid Spinadel "not enough space for preq custom IEs\n")) 1508c56ef672SDavid Spinadel return pos; 1509c56ef672SDavid Spinadel memcpy(buffer + pos, ie + custom_ie_offset, 1510c56ef672SDavid Spinadel ie_len - custom_ie_offset); 1511c56ef672SDavid Spinadel ie_desc->common_ies = buffer + pos; 1512c56ef672SDavid Spinadel ie_desc->common_ie_len = ie_len - custom_ie_offset; 1513c56ef672SDavid Spinadel pos += ie_len - custom_ie_offset; 1514c56ef672SDavid Spinadel } 1515c56ef672SDavid Spinadel 1516c56ef672SDavid Spinadel return pos; 1517c56ef672SDavid Spinadel }; 1518c56ef672SDavid Spinadel 1519a619a4c0SJuuso Oikarinen struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1520a344d677SJohannes Berg const u8 *src, const u8 *dst, 1521a344d677SJohannes Berg u32 ratemask, 15226b77863bSJohannes Berg struct ieee80211_channel *chan, 1523de95a54bSJohannes Berg const u8 *ssid, size_t ssid_len, 1524a806c558SPaul Stewart const u8 *ie, size_t ie_len, 1525a806c558SPaul Stewart bool directed) 152646900298SJohannes Berg { 152746900298SJohannes Berg struct ieee80211_local *local = sdata->local; 15282103dec1SSimon Wunderlich struct cfg80211_chan_def chandef; 152946900298SJohannes Berg struct sk_buff *skb; 153046900298SJohannes Berg struct ieee80211_mgmt *mgmt; 1531b9a9ada1SJohannes Berg int ies_len; 153257fbcce3SJohannes Berg u32 rate_masks[NUM_NL80211_BANDS] = {}; 1533c56ef672SDavid Spinadel struct ieee80211_scan_ies dummy_ie_desc; 153446900298SJohannes Berg 1535a806c558SPaul Stewart /* 1536a806c558SPaul Stewart * Do not send DS Channel parameter for directed probe requests 1537a806c558SPaul Stewart * in order to maximize the chance that we get a response. Some 1538a806c558SPaul Stewart * badly-behaved APs don't respond when this parameter is included. 1539a806c558SPaul Stewart */ 15402103dec1SSimon Wunderlich chandef.width = sdata->vif.bss_conf.chandef.width; 1541a806c558SPaul Stewart if (directed) 15422103dec1SSimon Wunderlich chandef.chan = NULL; 1543a806c558SPaul Stewart else 15442103dec1SSimon Wunderlich chandef.chan = chan; 1545651b5225SJouni Malinen 1546a344d677SJohannes Berg skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1547a344d677SJohannes Berg 100 + ie_len); 15485b2bbf75SJohannes Berg if (!skb) 1549b9a9ada1SJohannes Berg return NULL; 1550b9a9ada1SJohannes Berg 1551c56ef672SDavid Spinadel rate_masks[chan->band] = ratemask; 1552b9a9ada1SJohannes Berg ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), 1553c56ef672SDavid Spinadel skb_tailroom(skb), &dummy_ie_desc, 1554c56ef672SDavid Spinadel ie, ie_len, BIT(chan->band), 1555c56ef672SDavid Spinadel rate_masks, &chandef); 1556b9a9ada1SJohannes Berg skb_put(skb, ies_len); 15577c12ce8bSKalle Valo 155846900298SJohannes Berg if (dst) { 15597c12ce8bSKalle Valo mgmt = (struct ieee80211_mgmt *) skb->data; 156046900298SJohannes Berg memcpy(mgmt->da, dst, ETH_ALEN); 156146900298SJohannes Berg memcpy(mgmt->bssid, dst, ETH_ALEN); 156246900298SJohannes Berg } 156346900298SJohannes Berg 156462ae67beSJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 15655b2bbf75SJohannes Berg 1566a619a4c0SJuuso Oikarinen return skb; 1567a619a4c0SJuuso Oikarinen } 1568a619a4c0SJuuso Oikarinen 1569a344d677SJohannes Berg void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1570a344d677SJohannes Berg const u8 *src, const u8 *dst, 1571a619a4c0SJuuso Oikarinen const u8 *ssid, size_t ssid_len, 1572a806c558SPaul Stewart const u8 *ie, size_t ie_len, 15731672c0e3SJohannes Berg u32 ratemask, bool directed, u32 tx_flags, 157455de908aSJohannes Berg struct ieee80211_channel *channel, bool scan) 1575a619a4c0SJuuso Oikarinen { 1576a619a4c0SJuuso Oikarinen struct sk_buff *skb; 1577a619a4c0SJuuso Oikarinen 1578a344d677SJohannes Berg skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, 15796b77863bSJohannes Berg ssid, ssid_len, 158085a237feSJohannes Berg ie, ie_len, directed); 1581aad14cebSRajkumar Manoharan if (skb) { 15821672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= tx_flags; 158355de908aSJohannes Berg if (scan) 158455de908aSJohannes Berg ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); 158555de908aSJohannes Berg else 1586a619a4c0SJuuso Oikarinen ieee80211_tx_skb(sdata, skb); 158746900298SJohannes Berg } 1588aad14cebSRajkumar Manoharan } 158946900298SJohannes Berg 15902103dec1SSimon Wunderlich u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 159146900298SJohannes Berg struct ieee802_11_elems *elems, 159257fbcce3SJohannes Berg enum nl80211_band band, u32 *basic_rates) 159346900298SJohannes Berg { 159446900298SJohannes Berg struct ieee80211_supported_band *sband; 159546900298SJohannes Berg size_t num_rates; 15962103dec1SSimon Wunderlich u32 supp_rates, rate_flags; 15972103dec1SSimon Wunderlich int i, j, shift; 159821a8e9ddSMohammed Shafi Shajakhan 15992103dec1SSimon Wunderlich sband = sdata->local->hw.wiphy->bands[band]; 160021a8e9ddSMohammed Shafi Shajakhan if (WARN_ON(!sband)) 160121a8e9ddSMohammed Shafi Shajakhan return 1; 16022103dec1SSimon Wunderlich 16032103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 16042103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 160546900298SJohannes Berg 160646900298SJohannes Berg num_rates = sband->n_bitrates; 160746900298SJohannes Berg supp_rates = 0; 160846900298SJohannes Berg for (i = 0; i < elems->supp_rates_len + 160946900298SJohannes Berg elems->ext_supp_rates_len; i++) { 161046900298SJohannes Berg u8 rate = 0; 161146900298SJohannes Berg int own_rate; 16129ebb61a2SAshok Nagarajan bool is_basic; 161346900298SJohannes Berg if (i < elems->supp_rates_len) 161446900298SJohannes Berg rate = elems->supp_rates[i]; 161546900298SJohannes Berg else if (elems->ext_supp_rates) 161646900298SJohannes Berg rate = elems->ext_supp_rates 161746900298SJohannes Berg [i - elems->supp_rates_len]; 161846900298SJohannes Berg own_rate = 5 * (rate & 0x7f); 16199ebb61a2SAshok Nagarajan is_basic = !!(rate & 0x80); 16209ebb61a2SAshok Nagarajan 16219ebb61a2SAshok Nagarajan if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 16229ebb61a2SAshok Nagarajan continue; 16239ebb61a2SAshok Nagarajan 16249ebb61a2SAshok Nagarajan for (j = 0; j < num_rates; j++) { 16252103dec1SSimon Wunderlich int brate; 16262103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[j].flags) 16272103dec1SSimon Wunderlich != rate_flags) 16282103dec1SSimon Wunderlich continue; 16292103dec1SSimon Wunderlich 16302103dec1SSimon Wunderlich brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, 16312103dec1SSimon Wunderlich 1 << shift); 16322103dec1SSimon Wunderlich 16332103dec1SSimon Wunderlich if (brate == own_rate) { 163446900298SJohannes Berg supp_rates |= BIT(j); 16359ebb61a2SAshok Nagarajan if (basic_rates && is_basic) 16369ebb61a2SAshok Nagarajan *basic_rates |= BIT(j); 16379ebb61a2SAshok Nagarajan } 16389ebb61a2SAshok Nagarajan } 163946900298SJohannes Berg } 164046900298SJohannes Berg return supp_rates; 164146900298SJohannes Berg } 1642f2753ddbSJohannes Berg 164384f6a01cSJohannes Berg void ieee80211_stop_device(struct ieee80211_local *local) 164484f6a01cSJohannes Berg { 164584f6a01cSJohannes Berg ieee80211_led_radio(local, false); 164667408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 164784f6a01cSJohannes Berg 164884f6a01cSJohannes Berg cancel_work_sync(&local->reconfig_filter); 164984f6a01cSJohannes Berg 165084f6a01cSJohannes Berg flush_workqueue(local->workqueue); 1651678f415fSLennert Buytenhek drv_stop(local); 165284f6a01cSJohannes Berg } 165384f6a01cSJohannes Berg 165474430f94SJohannes Berg static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 165574430f94SJohannes Berg bool aborted) 165674430f94SJohannes Berg { 165774430f94SJohannes Berg /* It's possible that we don't handle the scan completion in 165874430f94SJohannes Berg * time during suspend, so if it's still marked as completed 165974430f94SJohannes Berg * here, queue the work and flush it to clean things up. 166074430f94SJohannes Berg * Instead of calling the worker function directly here, we 166174430f94SJohannes Berg * really queue it to avoid potential races with other flows 166274430f94SJohannes Berg * scheduling the same work. 166374430f94SJohannes Berg */ 166474430f94SJohannes Berg if (test_bit(SCAN_COMPLETED, &local->scanning)) { 166574430f94SJohannes Berg /* If coming from reconfiguration failure, abort the scan so 166674430f94SJohannes Berg * we don't attempt to continue a partial HW scan - which is 166774430f94SJohannes Berg * possible otherwise if (e.g.) the 2.4 GHz portion was the 166874430f94SJohannes Berg * completed scan, and a 5 GHz portion is still pending. 166974430f94SJohannes Berg */ 167074430f94SJohannes Berg if (aborted) 167174430f94SJohannes Berg set_bit(SCAN_ABORTED, &local->scanning); 167274430f94SJohannes Berg ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); 167374430f94SJohannes Berg flush_delayed_work(&local->scan_work); 167474430f94SJohannes Berg } 167574430f94SJohannes Berg } 167674430f94SJohannes Berg 1677f6837ba8SJohannes Berg static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1678f6837ba8SJohannes Berg { 1679f6837ba8SJohannes Berg struct ieee80211_sub_if_data *sdata; 1680f6837ba8SJohannes Berg struct ieee80211_chanctx *ctx; 1681f6837ba8SJohannes Berg 1682f6837ba8SJohannes Berg /* 1683f6837ba8SJohannes Berg * We get here if during resume the device can't be restarted properly. 1684f6837ba8SJohannes Berg * We might also get here if this happens during HW reset, which is a 1685f6837ba8SJohannes Berg * slightly different situation and we need to drop all connections in 1686f6837ba8SJohannes Berg * the latter case. 1687f6837ba8SJohannes Berg * 1688f6837ba8SJohannes Berg * Ask cfg80211 to turn off all interfaces, this will result in more 1689f6837ba8SJohannes Berg * warnings but at least we'll then get into a clean stopped state. 1690f6837ba8SJohannes Berg */ 1691f6837ba8SJohannes Berg 1692f6837ba8SJohannes Berg local->resuming = false; 1693f6837ba8SJohannes Berg local->suspended = false; 16947584f88fSEliad Peller local->in_reconfig = false; 1695f6837ba8SJohannes Berg 169674430f94SJohannes Berg ieee80211_flush_completed_scan(local, true); 169774430f94SJohannes Berg 1698f6837ba8SJohannes Berg /* scheduled scan clearly can't be running any more, but tell 1699f6837ba8SJohannes Berg * cfg80211 and clear local state 1700f6837ba8SJohannes Berg */ 1701f6837ba8SJohannes Berg ieee80211_sched_scan_end(local); 1702f6837ba8SJohannes Berg 1703f6837ba8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) 1704f6837ba8SJohannes Berg sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1705f6837ba8SJohannes Berg 1706f6837ba8SJohannes Berg /* Mark channel contexts as not being in the driver any more to avoid 1707f6837ba8SJohannes Berg * removing them from the driver during the shutdown process... 1708f6837ba8SJohannes Berg */ 1709f6837ba8SJohannes Berg mutex_lock(&local->chanctx_mtx); 1710f6837ba8SJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 1711f6837ba8SJohannes Berg ctx->driver_present = false; 1712f6837ba8SJohannes Berg mutex_unlock(&local->chanctx_mtx); 1713f6837ba8SJohannes Berg 1714f6837ba8SJohannes Berg cfg80211_shutdown_all_interfaces(local->hw.wiphy); 1715f6837ba8SJohannes Berg } 1716f6837ba8SJohannes Berg 1717153a5fc4SStanislaw Gruszka static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1718153a5fc4SStanislaw Gruszka struct ieee80211_sub_if_data *sdata) 1719153a5fc4SStanislaw Gruszka { 1720153a5fc4SStanislaw Gruszka struct ieee80211_chanctx_conf *conf; 1721153a5fc4SStanislaw Gruszka struct ieee80211_chanctx *ctx; 1722153a5fc4SStanislaw Gruszka 1723153a5fc4SStanislaw Gruszka if (!local->use_chanctx) 1724153a5fc4SStanislaw Gruszka return; 1725153a5fc4SStanislaw Gruszka 1726153a5fc4SStanislaw Gruszka mutex_lock(&local->chanctx_mtx); 1727153a5fc4SStanislaw Gruszka conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 1728153a5fc4SStanislaw Gruszka lockdep_is_held(&local->chanctx_mtx)); 1729153a5fc4SStanislaw Gruszka if (conf) { 1730153a5fc4SStanislaw Gruszka ctx = container_of(conf, struct ieee80211_chanctx, conf); 1731153a5fc4SStanislaw Gruszka drv_assign_vif_chanctx(local, sdata, ctx); 1732153a5fc4SStanislaw Gruszka } 1733153a5fc4SStanislaw Gruszka mutex_unlock(&local->chanctx_mtx); 1734153a5fc4SStanislaw Gruszka } 1735153a5fc4SStanislaw Gruszka 17361ea2c864SJohannes Berg static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 17371ea2c864SJohannes Berg { 17381ea2c864SJohannes Berg struct ieee80211_local *local = sdata->local; 17391ea2c864SJohannes Berg struct sta_info *sta; 17401ea2c864SJohannes Berg 17411ea2c864SJohannes Berg /* add STAs back */ 17421ea2c864SJohannes Berg mutex_lock(&local->sta_mtx); 17431ea2c864SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 17441ea2c864SJohannes Berg enum ieee80211_sta_state state; 17451ea2c864SJohannes Berg 17461ea2c864SJohannes Berg if (!sta->uploaded || sta->sdata != sdata) 17471ea2c864SJohannes Berg continue; 17481ea2c864SJohannes Berg 17491ea2c864SJohannes Berg for (state = IEEE80211_STA_NOTEXIST; 17501ea2c864SJohannes Berg state < sta->sta_state; state++) 17511ea2c864SJohannes Berg WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 17521ea2c864SJohannes Berg state + 1)); 17531ea2c864SJohannes Berg } 17541ea2c864SJohannes Berg mutex_unlock(&local->sta_mtx); 17551ea2c864SJohannes Berg } 17561ea2c864SJohannes Berg 1757167e33f4SAyala Beker static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1758167e33f4SAyala Beker { 1759167e33f4SAyala Beker struct cfg80211_nan_func *func, **funcs; 1760167e33f4SAyala Beker int res, id, i = 0; 1761167e33f4SAyala Beker 1762167e33f4SAyala Beker res = drv_start_nan(sdata->local, sdata, 1763167e33f4SAyala Beker &sdata->u.nan.conf); 1764167e33f4SAyala Beker if (WARN_ON(res)) 1765167e33f4SAyala Beker return res; 1766167e33f4SAyala Beker 1767167e33f4SAyala Beker funcs = kzalloc((sdata->local->hw.max_nan_de_entries + 1) * 1768167e33f4SAyala Beker sizeof(*funcs), GFP_KERNEL); 1769167e33f4SAyala Beker if (!funcs) 1770167e33f4SAyala Beker return -ENOMEM; 1771167e33f4SAyala Beker 1772167e33f4SAyala Beker /* Add all the functions: 1773167e33f4SAyala Beker * This is a little bit ugly. We need to call a potentially sleeping 1774167e33f4SAyala Beker * callback for each NAN function, so we can't hold the spinlock. 1775167e33f4SAyala Beker */ 1776167e33f4SAyala Beker spin_lock_bh(&sdata->u.nan.func_lock); 1777167e33f4SAyala Beker 1778167e33f4SAyala Beker idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1779167e33f4SAyala Beker funcs[i++] = func; 1780167e33f4SAyala Beker 1781167e33f4SAyala Beker spin_unlock_bh(&sdata->u.nan.func_lock); 1782167e33f4SAyala Beker 1783167e33f4SAyala Beker for (i = 0; funcs[i]; i++) { 1784167e33f4SAyala Beker res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1785167e33f4SAyala Beker if (WARN_ON(res)) 1786167e33f4SAyala Beker ieee80211_nan_func_terminated(&sdata->vif, 1787167e33f4SAyala Beker funcs[i]->instance_id, 1788167e33f4SAyala Beker NL80211_NAN_FUNC_TERM_REASON_ERROR, 1789167e33f4SAyala Beker GFP_KERNEL); 1790167e33f4SAyala Beker } 1791167e33f4SAyala Beker 1792167e33f4SAyala Beker kfree(funcs); 1793167e33f4SAyala Beker 1794167e33f4SAyala Beker return 0; 1795167e33f4SAyala Beker } 1796167e33f4SAyala Beker 1797f2753ddbSJohannes Berg int ieee80211_reconfig(struct ieee80211_local *local) 1798f2753ddbSJohannes Berg { 1799f2753ddbSJohannes Berg struct ieee80211_hw *hw = &local->hw; 1800f2753ddbSJohannes Berg struct ieee80211_sub_if_data *sdata; 180155de908aSJohannes Berg struct ieee80211_chanctx *ctx; 1802f2753ddbSJohannes Berg struct sta_info *sta; 18032683d65bSEliad Peller int res, i; 1804d888130aSJohannes Berg bool reconfig_due_to_wowlan = false; 1805d43c6b6eSDavid Spinadel struct ieee80211_sub_if_data *sched_scan_sdata; 18066ea0a69cSJohannes Berg struct cfg80211_sched_scan_request *sched_scan_req; 1807d43c6b6eSDavid Spinadel bool sched_scan_stopped = false; 1808b0485e9fSEliad Peller bool suspended = local->suspended; 1809d888130aSJohannes Berg 18100f8b8245SEliad Peller /* nothing to do if HW shouldn't run */ 18110f8b8245SEliad Peller if (!local->open_count) 18120f8b8245SEliad Peller goto wake_up; 18130f8b8245SEliad Peller 18148f21b0adSJohannes Berg #ifdef CONFIG_PM 1815b0485e9fSEliad Peller if (suspended) 1816ceb99fe0SJohannes Berg local->resuming = true; 1817f2753ddbSJohannes Berg 1818eecc4800SJohannes Berg if (local->wowlan) { 1819b0485e9fSEliad Peller /* 1820b0485e9fSEliad Peller * In the wowlan case, both mac80211 and the device 1821b0485e9fSEliad Peller * are functional when the resume op is called, so 1822b0485e9fSEliad Peller * clear local->suspended so the device could operate 1823b0485e9fSEliad Peller * normally (e.g. pass rx frames). 1824b0485e9fSEliad Peller */ 1825b0485e9fSEliad Peller local->suspended = false; 1826eecc4800SJohannes Berg res = drv_resume(local); 182727b3eb9cSJohannes Berg local->wowlan = false; 1828eecc4800SJohannes Berg if (res < 0) { 1829eecc4800SJohannes Berg local->resuming = false; 1830eecc4800SJohannes Berg return res; 1831eecc4800SJohannes Berg } 1832eecc4800SJohannes Berg if (res == 0) 1833eecc4800SJohannes Berg goto wake_up; 1834eecc4800SJohannes Berg WARN_ON(res > 1); 1835eecc4800SJohannes Berg /* 1836eecc4800SJohannes Berg * res is 1, which means the driver requested 1837eecc4800SJohannes Berg * to go through a regular reset on wakeup. 1838b0485e9fSEliad Peller * restore local->suspended in this case. 1839eecc4800SJohannes Berg */ 1840d888130aSJohannes Berg reconfig_due_to_wowlan = true; 1841b0485e9fSEliad Peller local->suspended = true; 1842eecc4800SJohannes Berg } 1843eecc4800SJohannes Berg #endif 184494f9b97bSJohannes Berg 184524feda00SLuis R. Rodriguez /* 184643d6df00SEliad Peller * In case of hw_restart during suspend (without wowlan), 184743d6df00SEliad Peller * cancel restart work, as we are reconfiguring the device 184843d6df00SEliad Peller * anyway. 184943d6df00SEliad Peller * Note that restart_work is scheduled on a frozen workqueue, 185043d6df00SEliad Peller * so we can't deadlock in this case. 185143d6df00SEliad Peller */ 185243d6df00SEliad Peller if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 185343d6df00SEliad Peller cancel_work_sync(&local->restart_work); 185443d6df00SEliad Peller 1855968a76ceSEliad Peller local->started = false; 1856968a76ceSEliad Peller 185743d6df00SEliad Peller /* 185824feda00SLuis R. Rodriguez * Upon resume hardware can sometimes be goofy due to 185924feda00SLuis R. Rodriguez * various platform / driver / bus issues, so restarting 186024feda00SLuis R. Rodriguez * the device may at times not work immediately. Propagate 186124feda00SLuis R. Rodriguez * the error. 186224feda00SLuis R. Rodriguez */ 186324487981SJohannes Berg res = drv_start(local); 186424feda00SLuis R. Rodriguez if (res) { 1865b0485e9fSEliad Peller if (suspended) 1866f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1867f6837ba8SJohannes Berg else 1868f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable during restart.\n"); 1869f6837ba8SJohannes Berg ieee80211_handle_reconfig_failure(local); 187024feda00SLuis R. Rodriguez return res; 187124feda00SLuis R. Rodriguez } 1872f2753ddbSJohannes Berg 18737f281975SYogesh Ashok Powar /* setup fragmentation threshold */ 18747f281975SYogesh Ashok Powar drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 18757f281975SYogesh Ashok Powar 18767f281975SYogesh Ashok Powar /* setup RTS threshold */ 18777f281975SYogesh Ashok Powar drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 18787f281975SYogesh Ashok Powar 18797f281975SYogesh Ashok Powar /* reset coverage class */ 18807f281975SYogesh Ashok Powar drv_set_coverage_class(local, hw->wiphy->coverage_class); 18817f281975SYogesh Ashok Powar 18821f87f7d3SJohannes Berg ieee80211_led_radio(local, true); 188367408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 188467408c8cSJohannes Berg IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1885f2753ddbSJohannes Berg 1886f2753ddbSJohannes Berg /* add interfaces */ 18874b6f1dd6SJohannes Berg sdata = rtnl_dereference(local->monitor_sdata); 18884b6f1dd6SJohannes Berg if (sdata) { 18893c3e21e7SJohannes Berg /* in HW restart it exists already */ 18903c3e21e7SJohannes Berg WARN_ON(local->resuming); 18914b6f1dd6SJohannes Berg res = drv_add_interface(local, sdata); 18924b6f1dd6SJohannes Berg if (WARN_ON(res)) { 18930c2bef46SMonam Agarwal RCU_INIT_POINTER(local->monitor_sdata, NULL); 18944b6f1dd6SJohannes Berg synchronize_net(); 18954b6f1dd6SJohannes Berg kfree(sdata); 18964b6f1dd6SJohannes Berg } 18974b6f1dd6SJohannes Berg } 18984b6f1dd6SJohannes Berg 1899f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1900f2753ddbSJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1901f2753ddbSJohannes Berg sdata->vif.type != NL80211_IFTYPE_MONITOR && 1902c8fff3dcSLuciano Coelho ieee80211_sdata_running(sdata)) { 19037b7eab6fSJohannes Berg res = drv_add_interface(local, sdata); 1904c8fff3dcSLuciano Coelho if (WARN_ON(res)) 1905c8fff3dcSLuciano Coelho break; 1906c8fff3dcSLuciano Coelho } 1907c8fff3dcSLuciano Coelho } 1908c8fff3dcSLuciano Coelho 1909c8fff3dcSLuciano Coelho /* If adding any of the interfaces failed above, roll back and 1910c8fff3dcSLuciano Coelho * report failure. 1911c8fff3dcSLuciano Coelho */ 1912c8fff3dcSLuciano Coelho if (res) { 1913c8fff3dcSLuciano Coelho list_for_each_entry_continue_reverse(sdata, &local->interfaces, 1914c8fff3dcSLuciano Coelho list) 1915c8fff3dcSLuciano Coelho if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1916c8fff3dcSLuciano Coelho sdata->vif.type != NL80211_IFTYPE_MONITOR && 1917c8fff3dcSLuciano Coelho ieee80211_sdata_running(sdata)) 1918c8fff3dcSLuciano Coelho drv_remove_interface(local, sdata); 1919c8fff3dcSLuciano Coelho ieee80211_handle_reconfig_failure(local); 1920c8fff3dcSLuciano Coelho return res; 1921f2753ddbSJohannes Berg } 1922f2753ddbSJohannes Berg 192355de908aSJohannes Berg /* add channel contexts */ 1924f0dea9c7SArend van Spriel if (local->use_chanctx) { 192555de908aSJohannes Berg mutex_lock(&local->chanctx_mtx); 192655de908aSJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 19275bcae31dSMichal Kazior if (ctx->replace_state != 19285bcae31dSMichal Kazior IEEE80211_CHANCTX_REPLACES_OTHER) 192955de908aSJohannes Berg WARN_ON(drv_add_chanctx(local, ctx)); 193055de908aSJohannes Berg mutex_unlock(&local->chanctx_mtx); 193155de908aSJohannes Berg 1932fe5f2559SJohannes Berg sdata = rtnl_dereference(local->monitor_sdata); 1933153a5fc4SStanislaw Gruszka if (sdata && ieee80211_sdata_running(sdata)) 1934153a5fc4SStanislaw Gruszka ieee80211_assign_chanctx(local, sdata); 19357df180f7SZhao, Gang } 1936fe5f2559SJohannes Berg 1937f2753ddbSJohannes Berg /* reconfigure hardware */ 1938f2753ddbSJohannes Berg ieee80211_hw_config(local, ~0); 1939f2753ddbSJohannes Berg 1940f2753ddbSJohannes Berg ieee80211_configure_filter(local); 1941f2753ddbSJohannes Berg 1942f2753ddbSJohannes Berg /* Finally also reconfigure all the BSS information */ 1943f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1944ac8dd506SJohannes Berg u32 changed; 1945ac8dd506SJohannes Berg 19469607e6b6SJohannes Berg if (!ieee80211_sdata_running(sdata)) 1947f2753ddbSJohannes Berg continue; 1948ac8dd506SJohannes Berg 19491ea2c864SJohannes Berg ieee80211_assign_chanctx(local, sdata); 19501ea2c864SJohannes Berg 19511ea2c864SJohannes Berg switch (sdata->vif.type) { 19521ea2c864SJohannes Berg case NL80211_IFTYPE_AP_VLAN: 19531ea2c864SJohannes Berg case NL80211_IFTYPE_MONITOR: 19541ea2c864SJohannes Berg break; 19551ea2c864SJohannes Berg default: 19561ea2c864SJohannes Berg ieee80211_reconfig_stations(sdata); 19571ea2c864SJohannes Berg /* fall through */ 19581ea2c864SJohannes Berg case NL80211_IFTYPE_AP: /* AP stations are handled later */ 19591ea2c864SJohannes Berg for (i = 0; i < IEEE80211_NUM_ACS; i++) 19601ea2c864SJohannes Berg drv_conf_tx(local, sdata, i, 19611ea2c864SJohannes Berg &sdata->tx_conf[i]); 19621ea2c864SJohannes Berg break; 19631ea2c864SJohannes Berg } 19641ea2c864SJohannes Berg 1965ac8dd506SJohannes Berg /* common change flags for all interface types */ 1966ac8dd506SJohannes Berg changed = BSS_CHANGED_ERP_CTS_PROT | 1967ac8dd506SJohannes Berg BSS_CHANGED_ERP_PREAMBLE | 1968ac8dd506SJohannes Berg BSS_CHANGED_ERP_SLOT | 1969ac8dd506SJohannes Berg BSS_CHANGED_HT | 1970ac8dd506SJohannes Berg BSS_CHANGED_BASIC_RATES | 1971ac8dd506SJohannes Berg BSS_CHANGED_BEACON_INT | 1972ac8dd506SJohannes Berg BSS_CHANGED_BSSID | 19734ced3f74SJohannes Berg BSS_CHANGED_CQM | 197455de47f6SEliad Peller BSS_CHANGED_QOS | 19751ea6f9c0SJohannes Berg BSS_CHANGED_IDLE | 19761ea6f9c0SJohannes Berg BSS_CHANGED_TXPOWER; 1977ac8dd506SJohannes Berg 1978b5a33d52SSara Sharon if (sdata->vif.mu_mimo_owner) 197923a1f8d4SSara Sharon changed |= BSS_CHANGED_MU_GROUPS; 198023a1f8d4SSara Sharon 1981f2753ddbSJohannes Berg switch (sdata->vif.type) { 1982f2753ddbSJohannes Berg case NL80211_IFTYPE_STATION: 19830d392e93SEliad Peller changed |= BSS_CHANGED_ASSOC | 1984ab095877SEliad Peller BSS_CHANGED_ARP_FILTER | 1985ab095877SEliad Peller BSS_CHANGED_PS; 1986c65dd147SEmmanuel Grumbach 1987989c6505SAlexander Bondar /* Re-send beacon info report to the driver */ 1988989c6505SAlexander Bondar if (sdata->u.mgd.have_beacon) 1989989c6505SAlexander Bondar changed |= BSS_CHANGED_BEACON_INFO; 1990c65dd147SEmmanuel Grumbach 1991e38a017bSAvraham Stern if (sdata->vif.bss_conf.max_idle_period || 1992e38a017bSAvraham Stern sdata->vif.bss_conf.protected_keep_alive) 1993e38a017bSAvraham Stern changed |= BSS_CHANGED_KEEP_ALIVE; 1994e38a017bSAvraham Stern 19958d61ffa5SJohannes Berg sdata_lock(sdata); 1996ac8dd506SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 19978d61ffa5SJohannes Berg sdata_unlock(sdata); 1998ac8dd506SJohannes Berg break; 19996e0bd6c3SRostislav Lisovy case NL80211_IFTYPE_OCB: 2000239281f8SRostislav Lisovy changed |= BSS_CHANGED_OCB; 2001239281f8SRostislav Lisovy ieee80211_bss_info_change_notify(sdata, changed); 20026e0bd6c3SRostislav Lisovy break; 2003f2753ddbSJohannes Berg case NL80211_IFTYPE_ADHOC: 2004ac8dd506SJohannes Berg changed |= BSS_CHANGED_IBSS; 2005ac8dd506SJohannes Berg /* fall through */ 2006f2753ddbSJohannes Berg case NL80211_IFTYPE_AP: 2007339afbf4SJohannes Berg changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; 2008e7979ac7SArik Nemtsov 20091041638fSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP) { 2010e7979ac7SArik Nemtsov changed |= BSS_CHANGED_AP_PROBE_RESP; 2011e7979ac7SArik Nemtsov 20121041638fSJohannes Berg if (rcu_access_pointer(sdata->u.ap.beacon)) 20131041638fSJohannes Berg drv_start_ap(local, sdata); 20141041638fSJohannes Berg } 20151041638fSJohannes Berg 20167827493bSArik Nemtsov /* fall through */ 2017f2753ddbSJohannes Berg case NL80211_IFTYPE_MESH_POINT: 20188da34932SJohannes Berg if (sdata->vif.bss_conf.enable_beacon) { 2019ac8dd506SJohannes Berg changed |= BSS_CHANGED_BEACON | 2020ac8dd506SJohannes Berg BSS_CHANGED_BEACON_ENABLED; 20212d0ddec5SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 20228da34932SJohannes Berg } 2023f2753ddbSJohannes Berg break; 2024167e33f4SAyala Beker case NL80211_IFTYPE_NAN: 2025167e33f4SAyala Beker res = ieee80211_reconfig_nan(sdata); 2026167e33f4SAyala Beker if (res < 0) { 2027167e33f4SAyala Beker ieee80211_handle_reconfig_failure(local); 2028167e33f4SAyala Beker return res; 2029167e33f4SAyala Beker } 2030167e33f4SAyala Beker break; 2031f2753ddbSJohannes Berg case NL80211_IFTYPE_WDS: 2032f2753ddbSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 2033f2753ddbSJohannes Berg case NL80211_IFTYPE_MONITOR: 203498104fdeSJohannes Berg case NL80211_IFTYPE_P2P_DEVICE: 2035b205786eSZhao, Gang /* nothing to do */ 2036f142c6b9SJohannes Berg break; 2037f2753ddbSJohannes Berg case NL80211_IFTYPE_UNSPECIFIED: 20382e161f78SJohannes Berg case NUM_NL80211_IFTYPES: 20392ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_CLIENT: 20402ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_GO: 2041f2753ddbSJohannes Berg WARN_ON(1); 2042f2753ddbSJohannes Berg break; 2043f2753ddbSJohannes Berg } 2044f2753ddbSJohannes Berg } 2045f2753ddbSJohannes Berg 20464a733ef1SJohannes Berg ieee80211_recalc_ps(local); 20478e1b23b9SEyal Shapira 20482a419056SJohannes Berg /* 20496e1b1b24SEliad Peller * The sta might be in psm against the ap (e.g. because 20506e1b1b24SEliad Peller * this was the state before a hw restart), so we 20516e1b1b24SEliad Peller * explicitly send a null packet in order to make sure 20526e1b1b24SEliad Peller * it'll sync against the ap (and get out of psm). 20536e1b1b24SEliad Peller */ 20546e1b1b24SEliad Peller if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 20556e1b1b24SEliad Peller list_for_each_entry(sdata, &local->interfaces, list) { 20566e1b1b24SEliad Peller if (sdata->vif.type != NL80211_IFTYPE_STATION) 20576e1b1b24SEliad Peller continue; 205820f544eeSJohannes Berg if (!sdata->u.mgd.associated) 205920f544eeSJohannes Berg continue; 20606e1b1b24SEliad Peller 2061076cdcb1SJohannes Berg ieee80211_send_nullfunc(local, sdata, false); 20626e1b1b24SEliad Peller } 20636e1b1b24SEliad Peller } 20646e1b1b24SEliad Peller 20652e8d397eSArik Nemtsov /* APs are now beaconing, add back stations */ 20662e8d397eSArik Nemtsov mutex_lock(&local->sta_mtx); 20672e8d397eSArik Nemtsov list_for_each_entry(sta, &local->sta_list, list) { 20682e8d397eSArik Nemtsov enum ieee80211_sta_state state; 20692e8d397eSArik Nemtsov 20702e8d397eSArik Nemtsov if (!sta->uploaded) 20712e8d397eSArik Nemtsov continue; 20722e8d397eSArik Nemtsov 20732e8d397eSArik Nemtsov if (sta->sdata->vif.type != NL80211_IFTYPE_AP) 20742e8d397eSArik Nemtsov continue; 20752e8d397eSArik Nemtsov 20762e8d397eSArik Nemtsov for (state = IEEE80211_STA_NOTEXIST; 20772e8d397eSArik Nemtsov state < sta->sta_state; state++) 20782e8d397eSArik Nemtsov WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 20792e8d397eSArik Nemtsov state + 1)); 20802e8d397eSArik Nemtsov } 20812e8d397eSArik Nemtsov mutex_unlock(&local->sta_mtx); 20822e8d397eSArik Nemtsov 20837b21aea0SEyal Shapira /* add back keys */ 20847b21aea0SEyal Shapira list_for_each_entry(sdata, &local->interfaces, list) 2085f9dca80bSMichal Kazior ieee80211_reset_crypto_tx_tailroom(sdata); 2086f9dca80bSMichal Kazior 2087f9dca80bSMichal Kazior list_for_each_entry(sdata, &local->interfaces, list) 20887b21aea0SEyal Shapira if (ieee80211_sdata_running(sdata)) 20897b21aea0SEyal Shapira ieee80211_enable_keys(sdata); 20907b21aea0SEyal Shapira 20910d440ea2SEliad Peller /* Reconfigure sched scan if it was interrupted by FW restart */ 20920d440ea2SEliad Peller mutex_lock(&local->mtx); 20930d440ea2SEliad Peller sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 20940d440ea2SEliad Peller lockdep_is_held(&local->mtx)); 20950d440ea2SEliad Peller sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 20960d440ea2SEliad Peller lockdep_is_held(&local->mtx)); 20970d440ea2SEliad Peller if (sched_scan_sdata && sched_scan_req) 20980d440ea2SEliad Peller /* 20990d440ea2SEliad Peller * Sched scan stopped, but we don't want to report it. Instead, 21000d440ea2SEliad Peller * we're trying to reschedule. However, if more than one scan 21010d440ea2SEliad Peller * plan was set, we cannot reschedule since we don't know which 21020d440ea2SEliad Peller * scan plan was currently running (and some scan plans may have 21030d440ea2SEliad Peller * already finished). 21040d440ea2SEliad Peller */ 21050d440ea2SEliad Peller if (sched_scan_req->n_scan_plans > 1 || 21060d440ea2SEliad Peller __ieee80211_request_sched_scan_start(sched_scan_sdata, 2107b9f628fcSEliad Peller sched_scan_req)) { 2108b9f628fcSEliad Peller RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2109b9f628fcSEliad Peller RCU_INIT_POINTER(local->sched_scan_req, NULL); 21100d440ea2SEliad Peller sched_scan_stopped = true; 2111b9f628fcSEliad Peller } 21120d440ea2SEliad Peller mutex_unlock(&local->mtx); 21130d440ea2SEliad Peller 21140d440ea2SEliad Peller if (sched_scan_stopped) 21150d440ea2SEliad Peller cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); 21160d440ea2SEliad Peller 2117c6209488SEliad Peller wake_up: 2118470f4d61SEliad Peller if (local->in_reconfig) { 211904800adaSArik Nemtsov local->in_reconfig = false; 212004800adaSArik Nemtsov barrier(); 212104800adaSArik Nemtsov 2122470f4d61SEliad Peller /* Restart deferred ROCs */ 2123470f4d61SEliad Peller mutex_lock(&local->mtx); 2124470f4d61SEliad Peller ieee80211_start_next_roc(local); 2125470f4d61SEliad Peller mutex_unlock(&local->mtx); 2126470f4d61SEliad Peller } 2127470f4d61SEliad Peller 21283c3e21e7SJohannes Berg if (local->monitors == local->open_count && local->monitors > 0) 21293c3e21e7SJohannes Berg ieee80211_add_virtual_monitor(local); 21303c3e21e7SJohannes Berg 21316e1b1b24SEliad Peller /* 21322a419056SJohannes Berg * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 21332a419056SJohannes Berg * sessions can be established after a resume. 21342a419056SJohannes Berg * 21352a419056SJohannes Berg * Also tear down aggregation sessions since reconfiguring 21362a419056SJohannes Berg * them in a hardware restart scenario is not easily done 21372a419056SJohannes Berg * right now, and the hardware will have lost information 21382a419056SJohannes Berg * about the sessions, but we and the AP still think they 21392a419056SJohannes Berg * are active. This is really a workaround though. 21402a419056SJohannes Berg */ 214130686bf7SJohannes Berg if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 21422a419056SJohannes Berg mutex_lock(&local->sta_mtx); 21432a419056SJohannes Berg 21442a419056SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 214527392719SEliad Peller if (!local->resuming) 2146c82c4a80SJohannes Berg ieee80211_sta_tear_down_BA_sessions( 2147c82c4a80SJohannes Berg sta, AGG_STOP_LOCAL_REQUEST); 2148c2c98fdeSJohannes Berg clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 214974e2bd1fSWey-Yi Guy } 21502a419056SJohannes Berg 21512a419056SJohannes Berg mutex_unlock(&local->sta_mtx); 215274e2bd1fSWey-Yi Guy } 215374e2bd1fSWey-Yi Guy 2154445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2155cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2156cca07b00SLuciano Coelho false); 2157f2753ddbSJohannes Berg 21585bb644a0SJohannes Berg /* 21595bb644a0SJohannes Berg * If this is for hw restart things are still running. 21605bb644a0SJohannes Berg * We may want to change that later, however. 21615bb644a0SJohannes Berg */ 2162b0485e9fSEliad Peller if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2163cf2c92d8SEliad Peller drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 21648f21b0adSJohannes Berg 2165b0485e9fSEliad Peller if (!suspended) 21665bb644a0SJohannes Berg return 0; 21675bb644a0SJohannes Berg 21685bb644a0SJohannes Berg #ifdef CONFIG_PM 2169ceb99fe0SJohannes Berg /* first set suspended false, then resuming */ 21705bb644a0SJohannes Berg local->suspended = false; 2171ceb99fe0SJohannes Berg mb(); 2172ceb99fe0SJohannes Berg local->resuming = false; 21735bb644a0SJohannes Berg 217474430f94SJohannes Berg ieee80211_flush_completed_scan(local, false); 21759120d94eSLuciano Coelho 21760f8b8245SEliad Peller if (local->open_count && !reconfig_due_to_wowlan) 2177cf2c92d8SEliad Peller drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2178cf2c92d8SEliad Peller 2179b8360ab8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 2180b8360ab8SJohannes Berg if (!ieee80211_sdata_running(sdata)) 2181b8360ab8SJohannes Berg continue; 2182b8360ab8SJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_STATION) 2183b8360ab8SJohannes Berg ieee80211_sta_restart(sdata); 2184b8360ab8SJohannes Berg } 2185b8360ab8SJohannes Berg 218626d59535SJohannes Berg mod_timer(&local->sta_cleanup, jiffies + 1); 21875bb644a0SJohannes Berg #else 21885bb644a0SJohannes Berg WARN_ON(1); 21895bb644a0SJohannes Berg #endif 2190d43c6b6eSDavid Spinadel 2191f2753ddbSJohannes Berg return 0; 2192f2753ddbSJohannes Berg } 219342935ecaSLuis R. Rodriguez 219495acac61SJohannes Berg void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 219595acac61SJohannes Berg { 219695acac61SJohannes Berg struct ieee80211_sub_if_data *sdata; 219795acac61SJohannes Berg struct ieee80211_local *local; 219895acac61SJohannes Berg struct ieee80211_key *key; 219995acac61SJohannes Berg 220095acac61SJohannes Berg if (WARN_ON(!vif)) 220195acac61SJohannes Berg return; 220295acac61SJohannes Berg 220395acac61SJohannes Berg sdata = vif_to_sdata(vif); 220495acac61SJohannes Berg local = sdata->local; 220595acac61SJohannes Berg 220695acac61SJohannes Berg if (WARN_ON(!local->resuming)) 220795acac61SJohannes Berg return; 220895acac61SJohannes Berg 220995acac61SJohannes Berg if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 221095acac61SJohannes Berg return; 221195acac61SJohannes Berg 221295acac61SJohannes Berg sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; 221395acac61SJohannes Berg 221495acac61SJohannes Berg mutex_lock(&local->key_mtx); 221595acac61SJohannes Berg list_for_each_entry(key, &sdata->key_list, list) 221695acac61SJohannes Berg key->flags |= KEY_FLAG_TAINTED; 221795acac61SJohannes Berg mutex_unlock(&local->key_mtx); 221895acac61SJohannes Berg } 221995acac61SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 222095acac61SJohannes Berg 222104ecd257SJohannes Berg void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) 22220f78231bSJohannes Berg { 222304ecd257SJohannes Berg struct ieee80211_local *local = sdata->local; 222404ecd257SJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 222504ecd257SJohannes Berg struct ieee80211_chanctx *chanctx; 22260f78231bSJohannes Berg 222704ecd257SJohannes Berg mutex_lock(&local->chanctx_mtx); 22280f78231bSJohannes Berg 222904ecd257SJohannes Berg chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 223004ecd257SJohannes Berg lockdep_is_held(&local->chanctx_mtx)); 22310f78231bSJohannes Berg 2232c189a685SAndrei Otcheretianski /* 2233c189a685SAndrei Otcheretianski * This function can be called from a work, thus it may be possible 2234c189a685SAndrei Otcheretianski * that the chanctx_conf is removed (due to a disconnection, for 2235c189a685SAndrei Otcheretianski * example). 2236c189a685SAndrei Otcheretianski * So nothing should be done in such case. 2237c189a685SAndrei Otcheretianski */ 2238c189a685SAndrei Otcheretianski if (!chanctx_conf) 22395d8e4237SJohannes Berg goto unlock; 22400f78231bSJohannes Berg 224104ecd257SJohannes Berg chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 224204ecd257SJohannes Berg ieee80211_recalc_smps_chanctx(local, chanctx); 22435d8e4237SJohannes Berg unlock: 224404ecd257SJohannes Berg mutex_unlock(&local->chanctx_mtx); 22450f78231bSJohannes Berg } 22468e664fb3SJohannes Berg 224721f659bfSEliad Peller void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) 224821f659bfSEliad Peller { 224921f659bfSEliad Peller struct ieee80211_local *local = sdata->local; 225021f659bfSEliad Peller struct ieee80211_chanctx_conf *chanctx_conf; 225121f659bfSEliad Peller struct ieee80211_chanctx *chanctx; 225221f659bfSEliad Peller 225321f659bfSEliad Peller mutex_lock(&local->chanctx_mtx); 225421f659bfSEliad Peller 225521f659bfSEliad Peller chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 225621f659bfSEliad Peller lockdep_is_held(&local->chanctx_mtx)); 225721f659bfSEliad Peller 225821f659bfSEliad Peller if (WARN_ON_ONCE(!chanctx_conf)) 225921f659bfSEliad Peller goto unlock; 226021f659bfSEliad Peller 226121f659bfSEliad Peller chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 226221f659bfSEliad Peller ieee80211_recalc_chanctx_min_def(local, chanctx); 226321f659bfSEliad Peller unlock: 226421f659bfSEliad Peller mutex_unlock(&local->chanctx_mtx); 226521f659bfSEliad Peller } 226621f659bfSEliad Peller 22678e664fb3SJohannes Berg size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 22688e664fb3SJohannes Berg { 22698e664fb3SJohannes Berg size_t pos = offset; 22708e664fb3SJohannes Berg 22718e664fb3SJohannes Berg while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 22728e664fb3SJohannes Berg pos += 2 + ies[pos + 1]; 22738e664fb3SJohannes Berg 22748e664fb3SJohannes Berg return pos; 22758e664fb3SJohannes Berg } 2276615f7b9bSMeenakshi Venkataraman 2277615f7b9bSMeenakshi Venkataraman static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, 2278615f7b9bSMeenakshi Venkataraman int rssi_min_thold, 2279615f7b9bSMeenakshi Venkataraman int rssi_max_thold) 2280615f7b9bSMeenakshi Venkataraman { 2281615f7b9bSMeenakshi Venkataraman trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); 2282615f7b9bSMeenakshi Venkataraman 2283615f7b9bSMeenakshi Venkataraman if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 2284615f7b9bSMeenakshi Venkataraman return; 2285615f7b9bSMeenakshi Venkataraman 2286615f7b9bSMeenakshi Venkataraman /* 2287615f7b9bSMeenakshi Venkataraman * Scale up threshold values before storing it, as the RSSI averaging 2288615f7b9bSMeenakshi Venkataraman * algorithm uses a scaled up value as well. Change this scaling 2289615f7b9bSMeenakshi Venkataraman * factor if the RSSI averaging algorithm changes. 2290615f7b9bSMeenakshi Venkataraman */ 2291615f7b9bSMeenakshi Venkataraman sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; 2292615f7b9bSMeenakshi Venkataraman sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; 2293615f7b9bSMeenakshi Venkataraman } 2294615f7b9bSMeenakshi Venkataraman 2295615f7b9bSMeenakshi Venkataraman void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 2296615f7b9bSMeenakshi Venkataraman int rssi_min_thold, 2297615f7b9bSMeenakshi Venkataraman int rssi_max_thold) 2298615f7b9bSMeenakshi Venkataraman { 2299615f7b9bSMeenakshi Venkataraman struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2300615f7b9bSMeenakshi Venkataraman 2301615f7b9bSMeenakshi Venkataraman WARN_ON(rssi_min_thold == rssi_max_thold || 2302615f7b9bSMeenakshi Venkataraman rssi_min_thold > rssi_max_thold); 2303615f7b9bSMeenakshi Venkataraman 2304615f7b9bSMeenakshi Venkataraman _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, 2305615f7b9bSMeenakshi Venkataraman rssi_max_thold); 2306615f7b9bSMeenakshi Venkataraman } 2307615f7b9bSMeenakshi Venkataraman EXPORT_SYMBOL(ieee80211_enable_rssi_reports); 2308615f7b9bSMeenakshi Venkataraman 2309615f7b9bSMeenakshi Venkataraman void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) 2310615f7b9bSMeenakshi Venkataraman { 2311615f7b9bSMeenakshi Venkataraman struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2312615f7b9bSMeenakshi Venkataraman 2313615f7b9bSMeenakshi Venkataraman _ieee80211_enable_rssi_reports(sdata, 0, 0); 2314615f7b9bSMeenakshi Venkataraman } 2315615f7b9bSMeenakshi Venkataraman EXPORT_SYMBOL(ieee80211_disable_rssi_reports); 2316768db343SArik Nemtsov 2317ef96a842SBen Greear u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 231842e7aa77SAlexander Simon u16 cap) 231942e7aa77SAlexander Simon { 232042e7aa77SAlexander Simon __le16 tmp; 232142e7aa77SAlexander Simon 232242e7aa77SAlexander Simon *pos++ = WLAN_EID_HT_CAPABILITY; 232342e7aa77SAlexander Simon *pos++ = sizeof(struct ieee80211_ht_cap); 232442e7aa77SAlexander Simon memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 232542e7aa77SAlexander Simon 232642e7aa77SAlexander Simon /* capability flags */ 232742e7aa77SAlexander Simon tmp = cpu_to_le16(cap); 232842e7aa77SAlexander Simon memcpy(pos, &tmp, sizeof(u16)); 232942e7aa77SAlexander Simon pos += sizeof(u16); 233042e7aa77SAlexander Simon 233142e7aa77SAlexander Simon /* AMPDU parameters */ 2332ef96a842SBen Greear *pos++ = ht_cap->ampdu_factor | 2333ef96a842SBen Greear (ht_cap->ampdu_density << 233442e7aa77SAlexander Simon IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 233542e7aa77SAlexander Simon 233642e7aa77SAlexander Simon /* MCS set */ 2337ef96a842SBen Greear memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2338ef96a842SBen Greear pos += sizeof(ht_cap->mcs); 233942e7aa77SAlexander Simon 234042e7aa77SAlexander Simon /* extended capabilities */ 234142e7aa77SAlexander Simon pos += sizeof(__le16); 234242e7aa77SAlexander Simon 234342e7aa77SAlexander Simon /* BF capabilities */ 234442e7aa77SAlexander Simon pos += sizeof(__le32); 234542e7aa77SAlexander Simon 234642e7aa77SAlexander Simon /* antenna selection */ 234742e7aa77SAlexander Simon pos += sizeof(u8); 234842e7aa77SAlexander Simon 234942e7aa77SAlexander Simon return pos; 235042e7aa77SAlexander Simon } 235142e7aa77SAlexander Simon 2352ba0afa2fSMahesh Palivela u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2353ba0afa2fSMahesh Palivela u32 cap) 2354ba0afa2fSMahesh Palivela { 2355ba0afa2fSMahesh Palivela __le32 tmp; 2356ba0afa2fSMahesh Palivela 2357ba0afa2fSMahesh Palivela *pos++ = WLAN_EID_VHT_CAPABILITY; 2358d4950281SMahesh Palivela *pos++ = sizeof(struct ieee80211_vht_cap); 2359d4950281SMahesh Palivela memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2360ba0afa2fSMahesh Palivela 2361ba0afa2fSMahesh Palivela /* capability flags */ 2362ba0afa2fSMahesh Palivela tmp = cpu_to_le32(cap); 2363ba0afa2fSMahesh Palivela memcpy(pos, &tmp, sizeof(u32)); 2364ba0afa2fSMahesh Palivela pos += sizeof(u32); 2365ba0afa2fSMahesh Palivela 2366ba0afa2fSMahesh Palivela /* VHT MCS set */ 2367ba0afa2fSMahesh Palivela memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2368ba0afa2fSMahesh Palivela pos += sizeof(vht_cap->vht_mcs); 2369ba0afa2fSMahesh Palivela 2370ba0afa2fSMahesh Palivela return pos; 2371ba0afa2fSMahesh Palivela } 2372ba0afa2fSMahesh Palivela 2373074d46d1SJohannes Berg u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 23744bf88530SJohannes Berg const struct cfg80211_chan_def *chandef, 237557f255f5SArik Nemtsov u16 prot_mode, bool rifs_mode) 237642e7aa77SAlexander Simon { 2377074d46d1SJohannes Berg struct ieee80211_ht_operation *ht_oper; 237842e7aa77SAlexander Simon /* Build HT Information */ 2379074d46d1SJohannes Berg *pos++ = WLAN_EID_HT_OPERATION; 2380074d46d1SJohannes Berg *pos++ = sizeof(struct ieee80211_ht_operation); 2381074d46d1SJohannes Berg ht_oper = (struct ieee80211_ht_operation *)pos; 23824bf88530SJohannes Berg ht_oper->primary_chan = ieee80211_frequency_to_channel( 23834bf88530SJohannes Berg chandef->chan->center_freq); 23844bf88530SJohannes Berg switch (chandef->width) { 23854bf88530SJohannes Berg case NL80211_CHAN_WIDTH_160: 23864bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80P80: 23874bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80: 23884bf88530SJohannes Berg case NL80211_CHAN_WIDTH_40: 23894bf88530SJohannes Berg if (chandef->center_freq1 > chandef->chan->center_freq) 23904bf88530SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 23914bf88530SJohannes Berg else 2392074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 239342e7aa77SAlexander Simon break; 239442e7aa77SAlexander Simon default: 2395074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 239642e7aa77SAlexander Simon break; 239742e7aa77SAlexander Simon } 2398aee286c2SThomas Pedersen if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 23994bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 24004bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20) 2401074d46d1SJohannes Berg ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2402ff3cc5f4SSimon Wunderlich 240357f255f5SArik Nemtsov if (rifs_mode) 240457f255f5SArik Nemtsov ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 240557f255f5SArik Nemtsov 2406431e3154SAshok Nagarajan ht_oper->operation_mode = cpu_to_le16(prot_mode); 2407074d46d1SJohannes Berg ht_oper->stbc_param = 0x0000; 240842e7aa77SAlexander Simon 240942e7aa77SAlexander Simon /* It seems that Basic MCS set and Supported MCS set 241042e7aa77SAlexander Simon are identical for the first 10 bytes */ 2411074d46d1SJohannes Berg memset(&ht_oper->basic_set, 0, 16); 2412074d46d1SJohannes Berg memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 241342e7aa77SAlexander Simon 2414074d46d1SJohannes Berg return pos + sizeof(struct ieee80211_ht_operation); 241542e7aa77SAlexander Simon } 241642e7aa77SAlexander Simon 2417fb28ec0cSArik Nemtsov u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2418fb28ec0cSArik Nemtsov const struct cfg80211_chan_def *chandef) 2419fb28ec0cSArik Nemtsov { 2420fb28ec0cSArik Nemtsov struct ieee80211_vht_operation *vht_oper; 2421fb28ec0cSArik Nemtsov 2422fb28ec0cSArik Nemtsov *pos++ = WLAN_EID_VHT_OPERATION; 2423fb28ec0cSArik Nemtsov *pos++ = sizeof(struct ieee80211_vht_operation); 2424fb28ec0cSArik Nemtsov vht_oper = (struct ieee80211_vht_operation *)pos; 24252fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2426fb28ec0cSArik Nemtsov chandef->center_freq1); 2427fb28ec0cSArik Nemtsov if (chandef->center_freq2) 24282fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = 2429fb28ec0cSArik Nemtsov ieee80211_frequency_to_channel(chandef->center_freq2); 2430f020ae40SChun-Yeow Yeoh else 24312fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = 0x00; 2432fb28ec0cSArik Nemtsov 2433fb28ec0cSArik Nemtsov switch (chandef->width) { 2434fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_160: 243523665aafSJouni Malinen /* 243623665aafSJouni Malinen * Convert 160 MHz channel width to new style as interop 243723665aafSJouni Malinen * workaround. 243823665aafSJouni Malinen */ 243923665aafSJouni Malinen vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 24402fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 244123665aafSJouni Malinen if (chandef->chan->center_freq < chandef->center_freq1) 24422fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx -= 8; 244323665aafSJouni Malinen else 24442fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx += 8; 2445fb28ec0cSArik Nemtsov break; 2446fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_80P80: 244723665aafSJouni Malinen /* 244823665aafSJouni Malinen * Convert 80+80 MHz channel width to new style as interop 244923665aafSJouni Malinen * workaround. 245023665aafSJouni Malinen */ 245123665aafSJouni Malinen vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2452fb28ec0cSArik Nemtsov break; 2453fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_80: 2454fb28ec0cSArik Nemtsov vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2455fb28ec0cSArik Nemtsov break; 2456fb28ec0cSArik Nemtsov default: 2457fb28ec0cSArik Nemtsov vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2458fb28ec0cSArik Nemtsov break; 2459fb28ec0cSArik Nemtsov } 2460fb28ec0cSArik Nemtsov 2461fb28ec0cSArik Nemtsov /* don't require special VHT peer rates */ 2462fb28ec0cSArik Nemtsov vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2463fb28ec0cSArik Nemtsov 2464fb28ec0cSArik Nemtsov return pos + sizeof(struct ieee80211_vht_operation); 2465fb28ec0cSArik Nemtsov } 2466fb28ec0cSArik Nemtsov 24678ac3c704SJohannes Berg bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 24684bf88530SJohannes Berg struct cfg80211_chan_def *chandef) 246942e7aa77SAlexander Simon { 247042e7aa77SAlexander Simon enum nl80211_channel_type channel_type; 247142e7aa77SAlexander Simon 24728ac3c704SJohannes Berg if (!ht_oper) 24738ac3c704SJohannes Berg return false; 247442e7aa77SAlexander Simon 2475074d46d1SJohannes Berg switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 247642e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_NONE: 247742e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT20; 247842e7aa77SAlexander Simon break; 247942e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 248042e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40PLUS; 248142e7aa77SAlexander Simon break; 248242e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 248342e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40MINUS; 248442e7aa77SAlexander Simon break; 248542e7aa77SAlexander Simon default: 248642e7aa77SAlexander Simon channel_type = NL80211_CHAN_NO_HT; 24878ac3c704SJohannes Berg return false; 248842e7aa77SAlexander Simon } 248942e7aa77SAlexander Simon 24908ac3c704SJohannes Berg cfg80211_chandef_create(chandef, chandef->chan, channel_type); 24918ac3c704SJohannes Berg return true; 249242e7aa77SAlexander Simon } 249342e7aa77SAlexander Simon 24948ac3c704SJohannes Berg bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2495abcff6efSJanusz.Dziedzic@tieto.com struct cfg80211_chan_def *chandef) 2496abcff6efSJanusz.Dziedzic@tieto.com { 24978ac3c704SJohannes Berg struct cfg80211_chan_def new = *chandef; 24988ac3c704SJohannes Berg int cf1, cf2; 2499abcff6efSJanusz.Dziedzic@tieto.com 25008ac3c704SJohannes Berg if (!oper) 25018ac3c704SJohannes Berg return false; 25028ac3c704SJohannes Berg 25032fb51c35SJohannes Berg cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg0_idx, 25048ac3c704SJohannes Berg chandef->chan->band); 25052fb51c35SJohannes Berg cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, 25068ac3c704SJohannes Berg chandef->chan->band); 2507abcff6efSJanusz.Dziedzic@tieto.com 2508abcff6efSJanusz.Dziedzic@tieto.com switch (oper->chan_width) { 2509abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_USE_HT: 2510abcff6efSJanusz.Dziedzic@tieto.com break; 2511abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_80MHZ: 25128ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_80; 25138ac3c704SJohannes Berg new.center_freq1 = cf1; 251423665aafSJouni Malinen /* If needed, adjust based on the newer interop workaround. */ 25152fb51c35SJohannes Berg if (oper->center_freq_seg1_idx) { 251623665aafSJouni Malinen unsigned int diff; 251723665aafSJouni Malinen 25182fb51c35SJohannes Berg diff = abs(oper->center_freq_seg1_idx - 25192fb51c35SJohannes Berg oper->center_freq_seg0_idx); 252023665aafSJouni Malinen if (diff == 8) { 252123665aafSJouni Malinen new.width = NL80211_CHAN_WIDTH_160; 252223665aafSJouni Malinen new.center_freq1 = cf2; 252323665aafSJouni Malinen } else if (diff > 8) { 252423665aafSJouni Malinen new.width = NL80211_CHAN_WIDTH_80P80; 252523665aafSJouni Malinen new.center_freq2 = cf2; 252623665aafSJouni Malinen } 252723665aafSJouni Malinen } 2528abcff6efSJanusz.Dziedzic@tieto.com break; 2529abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_160MHZ: 25308ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_160; 25318ac3c704SJohannes Berg new.center_freq1 = cf1; 2532abcff6efSJanusz.Dziedzic@tieto.com break; 2533abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 25348ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_80P80; 25358ac3c704SJohannes Berg new.center_freq1 = cf1; 25368ac3c704SJohannes Berg new.center_freq2 = cf2; 2537abcff6efSJanusz.Dziedzic@tieto.com break; 2538abcff6efSJanusz.Dziedzic@tieto.com default: 25398ac3c704SJohannes Berg return false; 2540abcff6efSJanusz.Dziedzic@tieto.com } 2541abcff6efSJanusz.Dziedzic@tieto.com 25428ac3c704SJohannes Berg if (!cfg80211_chandef_valid(&new)) 25438ac3c704SJohannes Berg return false; 25448ac3c704SJohannes Berg 25458ac3c704SJohannes Berg *chandef = new; 25468ac3c704SJohannes Berg return true; 2547abcff6efSJanusz.Dziedzic@tieto.com } 2548abcff6efSJanusz.Dziedzic@tieto.com 25492103dec1SSimon Wunderlich int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 25502103dec1SSimon Wunderlich const struct ieee80211_supported_band *sband, 25512103dec1SSimon Wunderlich const u8 *srates, int srates_len, u32 *rates) 25522103dec1SSimon Wunderlich { 25532103dec1SSimon Wunderlich u32 rate_flags = ieee80211_chandef_rate_flags(chandef); 25542103dec1SSimon Wunderlich int shift = ieee80211_chandef_get_shift(chandef); 25552103dec1SSimon Wunderlich struct ieee80211_rate *br; 25562103dec1SSimon Wunderlich int brate, rate, i, j, count = 0; 25572103dec1SSimon Wunderlich 25582103dec1SSimon Wunderlich *rates = 0; 25592103dec1SSimon Wunderlich 25602103dec1SSimon Wunderlich for (i = 0; i < srates_len; i++) { 25612103dec1SSimon Wunderlich rate = srates[i] & 0x7f; 25622103dec1SSimon Wunderlich 25632103dec1SSimon Wunderlich for (j = 0; j < sband->n_bitrates; j++) { 25642103dec1SSimon Wunderlich br = &sband->bitrates[j]; 25652103dec1SSimon Wunderlich if ((rate_flags & br->flags) != rate_flags) 25662103dec1SSimon Wunderlich continue; 25672103dec1SSimon Wunderlich 25682103dec1SSimon Wunderlich brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); 25692103dec1SSimon Wunderlich if (brate == rate) { 25702103dec1SSimon Wunderlich *rates |= BIT(j); 25712103dec1SSimon Wunderlich count++; 25722103dec1SSimon Wunderlich break; 25732103dec1SSimon Wunderlich } 25742103dec1SSimon Wunderlich } 25752103dec1SSimon Wunderlich } 25762103dec1SSimon Wunderlich return count; 25772103dec1SSimon Wunderlich } 25782103dec1SSimon Wunderlich 2579fc8a7321SJohannes Berg int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 25806b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 258157fbcce3SJohannes Berg enum nl80211_band band) 2582768db343SArik Nemtsov { 2583768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 2584768db343SArik Nemtsov struct ieee80211_supported_band *sband; 25852103dec1SSimon Wunderlich int rate, shift; 2586768db343SArik Nemtsov u8 i, rates, *pos; 2587fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 25882103dec1SSimon Wunderlich u32 rate_flags; 2589768db343SArik Nemtsov 25902103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 25912103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 25926b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 25932103dec1SSimon Wunderlich rates = 0; 25942103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 25952103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 25962103dec1SSimon Wunderlich continue; 25972103dec1SSimon Wunderlich rates++; 25982103dec1SSimon Wunderlich } 2599768db343SArik Nemtsov if (rates > 8) 2600768db343SArik Nemtsov rates = 8; 2601768db343SArik Nemtsov 2602768db343SArik Nemtsov if (skb_tailroom(skb) < rates + 2) 2603768db343SArik Nemtsov return -ENOMEM; 2604768db343SArik Nemtsov 2605768db343SArik Nemtsov pos = skb_put(skb, rates + 2); 2606768db343SArik Nemtsov *pos++ = WLAN_EID_SUPP_RATES; 2607768db343SArik Nemtsov *pos++ = rates; 2608768db343SArik Nemtsov for (i = 0; i < rates; i++) { 2609657c3e0cSAshok Nagarajan u8 basic = 0; 26102103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 26112103dec1SSimon Wunderlich continue; 26122103dec1SSimon Wunderlich 2613657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 2614657c3e0cSAshok Nagarajan basic = 0x80; 26152103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 26162103dec1SSimon Wunderlich 5 * (1 << shift)); 26172103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 2618768db343SArik Nemtsov } 2619768db343SArik Nemtsov 2620768db343SArik Nemtsov return 0; 2621768db343SArik Nemtsov } 2622768db343SArik Nemtsov 2623fc8a7321SJohannes Berg int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 26246b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 262557fbcce3SJohannes Berg enum nl80211_band band) 2626768db343SArik Nemtsov { 2627768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 2628768db343SArik Nemtsov struct ieee80211_supported_band *sband; 2629cc63ec76SChun-Yeow Yeoh int rate, shift; 2630768db343SArik Nemtsov u8 i, exrates, *pos; 2631fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 26322103dec1SSimon Wunderlich u32 rate_flags; 26332103dec1SSimon Wunderlich 26342103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 26352103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 2636768db343SArik Nemtsov 26376b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 26382103dec1SSimon Wunderlich exrates = 0; 26392103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 26402103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 26412103dec1SSimon Wunderlich continue; 26422103dec1SSimon Wunderlich exrates++; 26432103dec1SSimon Wunderlich } 26442103dec1SSimon Wunderlich 2645768db343SArik Nemtsov if (exrates > 8) 2646768db343SArik Nemtsov exrates -= 8; 2647768db343SArik Nemtsov else 2648768db343SArik Nemtsov exrates = 0; 2649768db343SArik Nemtsov 2650768db343SArik Nemtsov if (skb_tailroom(skb) < exrates + 2) 2651768db343SArik Nemtsov return -ENOMEM; 2652768db343SArik Nemtsov 2653768db343SArik Nemtsov if (exrates) { 2654768db343SArik Nemtsov pos = skb_put(skb, exrates + 2); 2655768db343SArik Nemtsov *pos++ = WLAN_EID_EXT_SUPP_RATES; 2656768db343SArik Nemtsov *pos++ = exrates; 2657768db343SArik Nemtsov for (i = 8; i < sband->n_bitrates; i++) { 2658657c3e0cSAshok Nagarajan u8 basic = 0; 26592103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) 26602103dec1SSimon Wunderlich != rate_flags) 26612103dec1SSimon Wunderlich continue; 2662657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 2663657c3e0cSAshok Nagarajan basic = 0x80; 26642103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 26652103dec1SSimon Wunderlich 5 * (1 << shift)); 26662103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 2667768db343SArik Nemtsov } 2668768db343SArik Nemtsov } 2669768db343SArik Nemtsov return 0; 2670768db343SArik Nemtsov } 26711dae27f8SWey-Yi Guy 26721dae27f8SWey-Yi Guy int ieee80211_ave_rssi(struct ieee80211_vif *vif) 26731dae27f8SWey-Yi Guy { 26741dae27f8SWey-Yi Guy struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 26751dae27f8SWey-Yi Guy struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 26761dae27f8SWey-Yi Guy 2677be6bcabcSWey-Yi Guy if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { 2678be6bcabcSWey-Yi Guy /* non-managed type inferfaces */ 2679be6bcabcSWey-Yi Guy return 0; 2680be6bcabcSWey-Yi Guy } 2681338c17aeSJohannes Berg return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); 26821dae27f8SWey-Yi Guy } 26830d8a0a17SWey-Yi Guy EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 268404ecd257SJohannes Berg 268504ecd257SJohannes Berg u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 268604ecd257SJohannes Berg { 268704ecd257SJohannes Berg if (!mcs) 268804ecd257SJohannes Berg return 1; 268904ecd257SJohannes Berg 269004ecd257SJohannes Berg /* TODO: consider rx_highest */ 269104ecd257SJohannes Berg 269204ecd257SJohannes Berg if (mcs->rx_mask[3]) 269304ecd257SJohannes Berg return 4; 269404ecd257SJohannes Berg if (mcs->rx_mask[2]) 269504ecd257SJohannes Berg return 3; 269604ecd257SJohannes Berg if (mcs->rx_mask[1]) 269704ecd257SJohannes Berg return 2; 269804ecd257SJohannes Berg return 1; 269904ecd257SJohannes Berg } 2700f4bda337SThomas Pedersen 2701f4bda337SThomas Pedersen /** 2702f4bda337SThomas Pedersen * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 2703f4bda337SThomas Pedersen * @local: mac80211 hw info struct 2704f4bda337SThomas Pedersen * @status: RX status 2705f4bda337SThomas Pedersen * @mpdu_len: total MPDU length (including FCS) 2706f4bda337SThomas Pedersen * @mpdu_offset: offset into MPDU to calculate timestamp at 2707f4bda337SThomas Pedersen * 2708f4bda337SThomas Pedersen * This function calculates the RX timestamp at the given MPDU offset, taking 2709f4bda337SThomas Pedersen * into account what the RX timestamp was. An offset of 0 will just normalize 2710f4bda337SThomas Pedersen * the timestamp to TSF at beginning of MPDU reception. 2711f4bda337SThomas Pedersen */ 2712f4bda337SThomas Pedersen u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 2713f4bda337SThomas Pedersen struct ieee80211_rx_status *status, 2714f4bda337SThomas Pedersen unsigned int mpdu_len, 2715f4bda337SThomas Pedersen unsigned int mpdu_offset) 2716f4bda337SThomas Pedersen { 2717f4bda337SThomas Pedersen u64 ts = status->mactime; 2718f4bda337SThomas Pedersen struct rate_info ri; 2719f4bda337SThomas Pedersen u16 rate; 2720f4bda337SThomas Pedersen 2721f4bda337SThomas Pedersen if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 2722f4bda337SThomas Pedersen return 0; 2723f4bda337SThomas Pedersen 2724f4bda337SThomas Pedersen memset(&ri, 0, sizeof(ri)); 2725f4bda337SThomas Pedersen 2726f4bda337SThomas Pedersen /* Fill cfg80211 rate info */ 2727da6a4352SJohannes Berg switch (status->encoding) { 2728da6a4352SJohannes Berg case RX_ENC_HT: 2729f4bda337SThomas Pedersen ri.mcs = status->rate_idx; 2730f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_MCS; 2731da6a4352SJohannes Berg ri.bw = status->bw; 27327fdd69c5SJohannes Berg if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 2733f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 2734da6a4352SJohannes Berg break; 2735da6a4352SJohannes Berg case RX_ENC_VHT: 27365614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 27375614618eSJohannes Berg ri.mcs = status->rate_idx; 27388613c948SJohannes Berg ri.nss = status->nss; 2739da6a4352SJohannes Berg ri.bw = status->bw; 27407fdd69c5SJohannes Berg if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 27415614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 2742da6a4352SJohannes Berg break; 2743da6a4352SJohannes Berg default: 2744da6a4352SJohannes Berg WARN_ON(1); 2745da6a4352SJohannes Berg /* fall through */ 2746da6a4352SJohannes Berg case RX_ENC_LEGACY: { 2747f4bda337SThomas Pedersen struct ieee80211_supported_band *sband; 27482103dec1SSimon Wunderlich int shift = 0; 27492103dec1SSimon Wunderlich int bitrate; 27502103dec1SSimon Wunderlich 2751da6a4352SJohannes Berg ri.bw = status->bw; 2752da6a4352SJohannes Berg 2753da6a4352SJohannes Berg switch (status->bw) { 2754da6a4352SJohannes Berg case RATE_INFO_BW_10: 27552103dec1SSimon Wunderlich shift = 1; 2756da6a4352SJohannes Berg break; 2757da6a4352SJohannes Berg case RATE_INFO_BW_5: 27582103dec1SSimon Wunderlich shift = 2; 2759da6a4352SJohannes Berg break; 2760b51f3beeSJohannes Berg } 2761f4bda337SThomas Pedersen 2762f4bda337SThomas Pedersen sband = local->hw.wiphy->bands[status->band]; 27632103dec1SSimon Wunderlich bitrate = sband->bitrates[status->rate_idx].bitrate; 27642103dec1SSimon Wunderlich ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); 2765f4a0f0c5SJohannes Berg 2766f4a0f0c5SJohannes Berg if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 2767f4a0f0c5SJohannes Berg /* TODO: handle HT/VHT preambles */ 276857fbcce3SJohannes Berg if (status->band == NL80211_BAND_5GHZ) { 2769f4a0f0c5SJohannes Berg ts += 20 << shift; 2770f4a0f0c5SJohannes Berg mpdu_offset += 2; 27717fdd69c5SJohannes Berg } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 2772f4a0f0c5SJohannes Berg ts += 96; 2773f4a0f0c5SJohannes Berg } else { 2774f4a0f0c5SJohannes Berg ts += 192; 2775f4a0f0c5SJohannes Berg } 2776f4a0f0c5SJohannes Berg } 2777da6a4352SJohannes Berg break; 2778da6a4352SJohannes Berg } 2779f4bda337SThomas Pedersen } 2780f4bda337SThomas Pedersen 2781f4bda337SThomas Pedersen rate = cfg80211_calculate_bitrate(&ri); 2782d86aa4f8SJohannes Berg if (WARN_ONCE(!rate, 2783f980ebc0SSara Sharon "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 2784f980ebc0SSara Sharon (unsigned long long)status->flag, status->rate_idx, 27858613c948SJohannes Berg status->nss)) 2786d86aa4f8SJohannes Berg return 0; 2787f4bda337SThomas Pedersen 2788f4bda337SThomas Pedersen /* rewind from end of MPDU */ 2789f4bda337SThomas Pedersen if (status->flag & RX_FLAG_MACTIME_END) 2790f4bda337SThomas Pedersen ts -= mpdu_len * 8 * 10 / rate; 2791f4bda337SThomas Pedersen 2792f4bda337SThomas Pedersen ts += mpdu_offset * 8 * 10 / rate; 2793f4bda337SThomas Pedersen 2794f4bda337SThomas Pedersen return ts; 2795f4bda337SThomas Pedersen } 2796164eb02dSSimon Wunderlich 2797164eb02dSSimon Wunderlich void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 2798164eb02dSSimon Wunderlich { 2799164eb02dSSimon Wunderlich struct ieee80211_sub_if_data *sdata; 2800d2859df5SJanusz Dziedzic struct cfg80211_chan_def chandef; 2801164eb02dSSimon Wunderlich 28024a199068SJohannes Berg /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */ 28034a199068SJohannes Berg ASSERT_RTNL(); 28044a199068SJohannes Berg 280534a3740dSJohannes Berg mutex_lock(&local->mtx); 2806164eb02dSSimon Wunderlich list_for_each_entry(sdata, &local->interfaces, list) { 280734a3740dSJohannes Berg /* it might be waiting for the local->mtx, but then 280834a3740dSJohannes Berg * by the time it gets it, sdata->wdev.cac_started 280934a3740dSJohannes Berg * will no longer be true 281034a3740dSJohannes Berg */ 281134a3740dSJohannes Berg cancel_delayed_work(&sdata->dfs_cac_timer_work); 2812164eb02dSSimon Wunderlich 2813164eb02dSSimon Wunderlich if (sdata->wdev.cac_started) { 2814d2859df5SJanusz Dziedzic chandef = sdata->vif.bss_conf.chandef; 2815164eb02dSSimon Wunderlich ieee80211_vif_release_channel(sdata); 2816164eb02dSSimon Wunderlich cfg80211_cac_event(sdata->dev, 2817d2859df5SJanusz Dziedzic &chandef, 2818164eb02dSSimon Wunderlich NL80211_RADAR_CAC_ABORTED, 2819164eb02dSSimon Wunderlich GFP_KERNEL); 2820164eb02dSSimon Wunderlich } 2821164eb02dSSimon Wunderlich } 282234a3740dSJohannes Berg mutex_unlock(&local->mtx); 2823164eb02dSSimon Wunderlich } 2824164eb02dSSimon Wunderlich 2825164eb02dSSimon Wunderlich void ieee80211_dfs_radar_detected_work(struct work_struct *work) 2826164eb02dSSimon Wunderlich { 2827164eb02dSSimon Wunderlich struct ieee80211_local *local = 2828164eb02dSSimon Wunderlich container_of(work, struct ieee80211_local, radar_detected_work); 282984a3d1c9SJanusz Dziedzic struct cfg80211_chan_def chandef = local->hw.conf.chandef; 2830486cf4c0SMichal Kazior struct ieee80211_chanctx *ctx; 2831486cf4c0SMichal Kazior int num_chanctx = 0; 2832486cf4c0SMichal Kazior 2833486cf4c0SMichal Kazior mutex_lock(&local->chanctx_mtx); 2834486cf4c0SMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 2835486cf4c0SMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 2836486cf4c0SMichal Kazior continue; 2837486cf4c0SMichal Kazior 2838486cf4c0SMichal Kazior num_chanctx++; 2839486cf4c0SMichal Kazior chandef = ctx->conf.def; 2840486cf4c0SMichal Kazior } 2841486cf4c0SMichal Kazior mutex_unlock(&local->chanctx_mtx); 2842164eb02dSSimon Wunderlich 28434a199068SJohannes Berg rtnl_lock(); 2844164eb02dSSimon Wunderlich ieee80211_dfs_cac_cancel(local); 28454a199068SJohannes Berg rtnl_unlock(); 2846164eb02dSSimon Wunderlich 2847486cf4c0SMichal Kazior if (num_chanctx > 1) 2848486cf4c0SMichal Kazior /* XXX: multi-channel is not supported yet */ 2849164eb02dSSimon Wunderlich WARN_ON(1); 285084a3d1c9SJanusz Dziedzic else 2851164eb02dSSimon Wunderlich cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 2852164eb02dSSimon Wunderlich } 2853164eb02dSSimon Wunderlich 2854164eb02dSSimon Wunderlich void ieee80211_radar_detected(struct ieee80211_hw *hw) 2855164eb02dSSimon Wunderlich { 2856164eb02dSSimon Wunderlich struct ieee80211_local *local = hw_to_local(hw); 2857164eb02dSSimon Wunderlich 2858164eb02dSSimon Wunderlich trace_api_radar_detected(local); 2859164eb02dSSimon Wunderlich 28604a199068SJohannes Berg schedule_work(&local->radar_detected_work); 2861164eb02dSSimon Wunderlich } 2862164eb02dSSimon Wunderlich EXPORT_SYMBOL(ieee80211_radar_detected); 2863e6b7cde4SSimon Wunderlich 2864e6b7cde4SSimon Wunderlich u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) 2865e6b7cde4SSimon Wunderlich { 2866e6b7cde4SSimon Wunderlich u32 ret; 2867e6b7cde4SSimon Wunderlich int tmp; 2868e6b7cde4SSimon Wunderlich 2869e6b7cde4SSimon Wunderlich switch (c->width) { 2870e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20: 2871e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 2872e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2873e6b7cde4SSimon Wunderlich break; 2874e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_40: 2875e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20; 2876e6b7cde4SSimon Wunderlich c->center_freq1 = c->chan->center_freq; 2877e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_40MHZ | 2878e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_VHT; 2879e6b7cde4SSimon Wunderlich break; 2880e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80: 2881e6b7cde4SSimon Wunderlich tmp = (30 + c->chan->center_freq - c->center_freq1)/20; 2882e6b7cde4SSimon Wunderlich /* n_P40 */ 2883e6b7cde4SSimon Wunderlich tmp /= 2; 2884e6b7cde4SSimon Wunderlich /* freq_P40 */ 2885e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; 2886e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_40; 2887e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_VHT; 2888e6b7cde4SSimon Wunderlich break; 2889e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80P80: 2890e6b7cde4SSimon Wunderlich c->center_freq2 = 0; 2891e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 2892e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_80P80MHZ | 2893e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_160MHZ; 2894e6b7cde4SSimon Wunderlich break; 2895e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_160: 2896e6b7cde4SSimon Wunderlich /* n_P20 */ 2897e6b7cde4SSimon Wunderlich tmp = (70 + c->chan->center_freq - c->center_freq1)/20; 2898e6b7cde4SSimon Wunderlich /* n_P80 */ 2899e6b7cde4SSimon Wunderlich tmp /= 4; 2900e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; 2901e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 2902e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_80P80MHZ | 2903e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_160MHZ; 2904e6b7cde4SSimon Wunderlich break; 2905e6b7cde4SSimon Wunderlich default: 2906e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20_NOHT: 2907e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 2908e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 2909e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2910e6b7cde4SSimon Wunderlich break; 2911e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_5: 2912e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_10: 2913e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 2914e6b7cde4SSimon Wunderlich /* keep c->width */ 2915e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2916e6b7cde4SSimon Wunderlich break; 2917e6b7cde4SSimon Wunderlich } 2918e6b7cde4SSimon Wunderlich 2919e6b7cde4SSimon Wunderlich WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 2920e6b7cde4SSimon Wunderlich 2921e6b7cde4SSimon Wunderlich return ret; 2922e6b7cde4SSimon Wunderlich } 2923687da132SEmmanuel Grumbach 2924687da132SEmmanuel Grumbach /* 2925687da132SEmmanuel Grumbach * Returns true if smps_mode_new is strictly more restrictive than 2926687da132SEmmanuel Grumbach * smps_mode_old. 2927687da132SEmmanuel Grumbach */ 2928687da132SEmmanuel Grumbach bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2929687da132SEmmanuel Grumbach enum ieee80211_smps_mode smps_mode_new) 2930687da132SEmmanuel Grumbach { 2931687da132SEmmanuel Grumbach if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 2932687da132SEmmanuel Grumbach smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 2933687da132SEmmanuel Grumbach return false; 2934687da132SEmmanuel Grumbach 2935687da132SEmmanuel Grumbach switch (smps_mode_old) { 2936687da132SEmmanuel Grumbach case IEEE80211_SMPS_STATIC: 2937687da132SEmmanuel Grumbach return false; 2938687da132SEmmanuel Grumbach case IEEE80211_SMPS_DYNAMIC: 2939687da132SEmmanuel Grumbach return smps_mode_new == IEEE80211_SMPS_STATIC; 2940687da132SEmmanuel Grumbach case IEEE80211_SMPS_OFF: 2941687da132SEmmanuel Grumbach return smps_mode_new != IEEE80211_SMPS_OFF; 2942687da132SEmmanuel Grumbach default: 2943687da132SEmmanuel Grumbach WARN_ON(1); 2944687da132SEmmanuel Grumbach } 2945687da132SEmmanuel Grumbach 2946687da132SEmmanuel Grumbach return false; 2947687da132SEmmanuel Grumbach } 2948c6da674aSChun-Yeow Yeoh 2949c6da674aSChun-Yeow Yeoh int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2950c6da674aSChun-Yeow Yeoh struct cfg80211_csa_settings *csa_settings) 2951c6da674aSChun-Yeow Yeoh { 2952c6da674aSChun-Yeow Yeoh struct sk_buff *skb; 2953c6da674aSChun-Yeow Yeoh struct ieee80211_mgmt *mgmt; 2954c6da674aSChun-Yeow Yeoh struct ieee80211_local *local = sdata->local; 2955c6da674aSChun-Yeow Yeoh int freq; 2956c6da674aSChun-Yeow Yeoh int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + 2957c6da674aSChun-Yeow Yeoh sizeof(mgmt->u.action.u.chan_switch); 2958c6da674aSChun-Yeow Yeoh u8 *pos; 2959c6da674aSChun-Yeow Yeoh 2960c6da674aSChun-Yeow Yeoh if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2961c6da674aSChun-Yeow Yeoh sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2962c6da674aSChun-Yeow Yeoh return -EOPNOTSUPP; 2963c6da674aSChun-Yeow Yeoh 2964c6da674aSChun-Yeow Yeoh skb = dev_alloc_skb(local->tx_headroom + hdr_len + 2965c6da674aSChun-Yeow Yeoh 5 + /* channel switch announcement element */ 2966c6da674aSChun-Yeow Yeoh 3 + /* secondary channel offset element */ 2967c6da674aSChun-Yeow Yeoh 8); /* mesh channel switch parameters element */ 2968c6da674aSChun-Yeow Yeoh if (!skb) 2969c6da674aSChun-Yeow Yeoh return -ENOMEM; 2970c6da674aSChun-Yeow Yeoh 2971c6da674aSChun-Yeow Yeoh skb_reserve(skb, local->tx_headroom); 2972c6da674aSChun-Yeow Yeoh mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); 2973c6da674aSChun-Yeow Yeoh memset(mgmt, 0, hdr_len); 2974c6da674aSChun-Yeow Yeoh mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2975c6da674aSChun-Yeow Yeoh IEEE80211_STYPE_ACTION); 2976c6da674aSChun-Yeow Yeoh 2977c6da674aSChun-Yeow Yeoh eth_broadcast_addr(mgmt->da); 2978c6da674aSChun-Yeow Yeoh memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2979c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 2980c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 2981c6da674aSChun-Yeow Yeoh } else { 2982c6da674aSChun-Yeow Yeoh struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2983c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 2984c6da674aSChun-Yeow Yeoh } 2985c6da674aSChun-Yeow Yeoh mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 2986c6da674aSChun-Yeow Yeoh mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 2987c6da674aSChun-Yeow Yeoh pos = skb_put(skb, 5); 2988c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 2989c6da674aSChun-Yeow Yeoh *pos++ = 3; /* IE length */ 2990c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 2991c6da674aSChun-Yeow Yeoh freq = csa_settings->chandef.chan->center_freq; 2992c6da674aSChun-Yeow Yeoh *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 2993c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->count; /* count */ 2994c6da674aSChun-Yeow Yeoh 2995c6da674aSChun-Yeow Yeoh if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 2996c6da674aSChun-Yeow Yeoh enum nl80211_channel_type ch_type; 2997c6da674aSChun-Yeow Yeoh 2998c6da674aSChun-Yeow Yeoh skb_put(skb, 3); 2999c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3000c6da674aSChun-Yeow Yeoh *pos++ = 1; /* IE length */ 3001c6da674aSChun-Yeow Yeoh ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3002c6da674aSChun-Yeow Yeoh if (ch_type == NL80211_CHAN_HT40PLUS) 3003c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3004c6da674aSChun-Yeow Yeoh else 3005c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3006c6da674aSChun-Yeow Yeoh } 3007c6da674aSChun-Yeow Yeoh 3008c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 3009c6da674aSChun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3010c6da674aSChun-Yeow Yeoh 3011c6da674aSChun-Yeow Yeoh skb_put(skb, 8); 3012c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3013c6da674aSChun-Yeow Yeoh *pos++ = 6; /* IE length */ 3014c6da674aSChun-Yeow Yeoh *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3015c6da674aSChun-Yeow Yeoh *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3016c6da674aSChun-Yeow Yeoh *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3017c6da674aSChun-Yeow Yeoh *pos++ |= csa_settings->block_tx ? 3018c6da674aSChun-Yeow Yeoh WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3019c6da674aSChun-Yeow Yeoh put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3020c6da674aSChun-Yeow Yeoh pos += 2; 3021ca91dc97SChun-Yeow Yeoh put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3022c6da674aSChun-Yeow Yeoh pos += 2; 3023c6da674aSChun-Yeow Yeoh } 3024c6da674aSChun-Yeow Yeoh 3025c6da674aSChun-Yeow Yeoh ieee80211_tx_skb(sdata, skb); 3026c6da674aSChun-Yeow Yeoh return 0; 3027c6da674aSChun-Yeow Yeoh } 30282475b1ccSMax Stepanov 30292475b1ccSMax Stepanov bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) 30302475b1ccSMax Stepanov { 30312475b1ccSMax Stepanov return !(cs == NULL || cs->cipher == 0 || 30322475b1ccSMax Stepanov cs->hdr_len < cs->pn_len + cs->pn_off || 30332475b1ccSMax Stepanov cs->hdr_len <= cs->key_idx_off || 30342475b1ccSMax Stepanov cs->key_idx_shift > 7 || 30352475b1ccSMax Stepanov cs->key_idx_mask == 0); 30362475b1ccSMax Stepanov } 30372475b1ccSMax Stepanov 30382475b1ccSMax Stepanov bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) 30392475b1ccSMax Stepanov { 30402475b1ccSMax Stepanov int i; 30412475b1ccSMax Stepanov 30422475b1ccSMax Stepanov /* Ensure we have enough iftype bitmap space for all iftype values */ 30432475b1ccSMax Stepanov WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); 30442475b1ccSMax Stepanov 30452475b1ccSMax Stepanov for (i = 0; i < n; i++) 30462475b1ccSMax Stepanov if (!ieee80211_cs_valid(&cs[i])) 30472475b1ccSMax Stepanov return false; 30482475b1ccSMax Stepanov 30492475b1ccSMax Stepanov return true; 30502475b1ccSMax Stepanov } 30512475b1ccSMax Stepanov 30522475b1ccSMax Stepanov const struct ieee80211_cipher_scheme * 30532475b1ccSMax Stepanov ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 30542475b1ccSMax Stepanov enum nl80211_iftype iftype) 30552475b1ccSMax Stepanov { 30562475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; 30572475b1ccSMax Stepanov int n = local->hw.n_cipher_schemes; 30582475b1ccSMax Stepanov int i; 30592475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *cs = NULL; 30602475b1ccSMax Stepanov 30612475b1ccSMax Stepanov for (i = 0; i < n; i++) { 30622475b1ccSMax Stepanov if (l[i].cipher == cipher) { 30632475b1ccSMax Stepanov cs = &l[i]; 30642475b1ccSMax Stepanov break; 30652475b1ccSMax Stepanov } 30662475b1ccSMax Stepanov } 30672475b1ccSMax Stepanov 30682475b1ccSMax Stepanov if (!cs || !(cs->iftype & BIT(iftype))) 30692475b1ccSMax Stepanov return NULL; 30702475b1ccSMax Stepanov 30712475b1ccSMax Stepanov return cs; 30722475b1ccSMax Stepanov } 30732475b1ccSMax Stepanov 30742475b1ccSMax Stepanov int ieee80211_cs_headroom(struct ieee80211_local *local, 30752475b1ccSMax Stepanov struct cfg80211_crypto_settings *crypto, 30762475b1ccSMax Stepanov enum nl80211_iftype iftype) 30772475b1ccSMax Stepanov { 30782475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *cs; 30792475b1ccSMax Stepanov int headroom = IEEE80211_ENCRYPT_HEADROOM; 30802475b1ccSMax Stepanov int i; 30812475b1ccSMax Stepanov 30822475b1ccSMax Stepanov for (i = 0; i < crypto->n_ciphers_pairwise; i++) { 30832475b1ccSMax Stepanov cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], 30842475b1ccSMax Stepanov iftype); 30852475b1ccSMax Stepanov 30862475b1ccSMax Stepanov if (cs && headroom < cs->hdr_len) 30872475b1ccSMax Stepanov headroom = cs->hdr_len; 30882475b1ccSMax Stepanov } 30892475b1ccSMax Stepanov 30902475b1ccSMax Stepanov cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); 30912475b1ccSMax Stepanov if (cs && headroom < cs->hdr_len) 30922475b1ccSMax Stepanov headroom = cs->hdr_len; 30932475b1ccSMax Stepanov 30942475b1ccSMax Stepanov return headroom; 30952475b1ccSMax Stepanov } 3096a7022e65SFelix Fietkau 3097a7022e65SFelix Fietkau static bool 3098a7022e65SFelix Fietkau ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3099a7022e65SFelix Fietkau { 3100a7022e65SFelix Fietkau s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3101a7022e65SFelix Fietkau int skip; 3102a7022e65SFelix Fietkau 3103a7022e65SFelix Fietkau if (end > 0) 3104a7022e65SFelix Fietkau return false; 3105a7022e65SFelix Fietkau 3106519ee691SJanusz.Dziedzic@tieto.com /* One shot NOA */ 3107519ee691SJanusz.Dziedzic@tieto.com if (data->count[i] == 1) 3108519ee691SJanusz.Dziedzic@tieto.com return false; 3109519ee691SJanusz.Dziedzic@tieto.com 3110519ee691SJanusz.Dziedzic@tieto.com if (data->desc[i].interval == 0) 3111519ee691SJanusz.Dziedzic@tieto.com return false; 3112519ee691SJanusz.Dziedzic@tieto.com 3113a7022e65SFelix Fietkau /* End time is in the past, check for repetitions */ 3114a7022e65SFelix Fietkau skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3115a7022e65SFelix Fietkau if (data->count[i] < 255) { 3116a7022e65SFelix Fietkau if (data->count[i] <= skip) { 3117a7022e65SFelix Fietkau data->count[i] = 0; 3118a7022e65SFelix Fietkau return false; 3119a7022e65SFelix Fietkau } 3120a7022e65SFelix Fietkau 3121a7022e65SFelix Fietkau data->count[i] -= skip; 3122a7022e65SFelix Fietkau } 3123a7022e65SFelix Fietkau 3124a7022e65SFelix Fietkau data->desc[i].start += skip * data->desc[i].interval; 3125a7022e65SFelix Fietkau 3126a7022e65SFelix Fietkau return true; 3127a7022e65SFelix Fietkau } 3128a7022e65SFelix Fietkau 3129a7022e65SFelix Fietkau static bool 3130a7022e65SFelix Fietkau ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3131a7022e65SFelix Fietkau s32 *offset) 3132a7022e65SFelix Fietkau { 3133a7022e65SFelix Fietkau bool ret = false; 3134a7022e65SFelix Fietkau int i; 3135a7022e65SFelix Fietkau 3136a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3137a7022e65SFelix Fietkau s32 cur; 3138a7022e65SFelix Fietkau 3139a7022e65SFelix Fietkau if (!data->count[i]) 3140a7022e65SFelix Fietkau continue; 3141a7022e65SFelix Fietkau 3142a7022e65SFelix Fietkau if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3143a7022e65SFelix Fietkau ret = true; 3144a7022e65SFelix Fietkau 3145a7022e65SFelix Fietkau cur = data->desc[i].start - tsf; 3146a7022e65SFelix Fietkau if (cur > *offset) 3147a7022e65SFelix Fietkau continue; 3148a7022e65SFelix Fietkau 3149a7022e65SFelix Fietkau cur = data->desc[i].start + data->desc[i].duration - tsf; 3150a7022e65SFelix Fietkau if (cur > *offset) 3151a7022e65SFelix Fietkau *offset = cur; 3152a7022e65SFelix Fietkau } 3153a7022e65SFelix Fietkau 3154a7022e65SFelix Fietkau return ret; 3155a7022e65SFelix Fietkau } 3156a7022e65SFelix Fietkau 3157a7022e65SFelix Fietkau static u32 3158a7022e65SFelix Fietkau ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3159a7022e65SFelix Fietkau { 3160a7022e65SFelix Fietkau s32 offset = 0; 3161a7022e65SFelix Fietkau int tries = 0; 3162a7022e65SFelix Fietkau /* 3163a7022e65SFelix Fietkau * arbitrary limit, used to avoid infinite loops when combined NoA 3164a7022e65SFelix Fietkau * descriptors cover the full time period. 3165a7022e65SFelix Fietkau */ 3166a7022e65SFelix Fietkau int max_tries = 5; 3167a7022e65SFelix Fietkau 3168a7022e65SFelix Fietkau ieee80211_extend_absent_time(data, tsf, &offset); 3169a7022e65SFelix Fietkau do { 3170a7022e65SFelix Fietkau if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3171a7022e65SFelix Fietkau break; 3172a7022e65SFelix Fietkau 3173a7022e65SFelix Fietkau tries++; 3174a7022e65SFelix Fietkau } while (tries < max_tries); 3175a7022e65SFelix Fietkau 3176a7022e65SFelix Fietkau return offset; 3177a7022e65SFelix Fietkau } 3178a7022e65SFelix Fietkau 3179a7022e65SFelix Fietkau void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3180a7022e65SFelix Fietkau { 3181a7022e65SFelix Fietkau u32 next_offset = BIT(31) - 1; 3182a7022e65SFelix Fietkau int i; 3183a7022e65SFelix Fietkau 3184a7022e65SFelix Fietkau data->absent = 0; 3185a7022e65SFelix Fietkau data->has_next_tsf = false; 3186a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3187a7022e65SFelix Fietkau s32 start; 3188a7022e65SFelix Fietkau 3189a7022e65SFelix Fietkau if (!data->count[i]) 3190a7022e65SFelix Fietkau continue; 3191a7022e65SFelix Fietkau 3192a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 3193a7022e65SFelix Fietkau start = data->desc[i].start - tsf; 3194a7022e65SFelix Fietkau if (start <= 0) 3195a7022e65SFelix Fietkau data->absent |= BIT(i); 3196a7022e65SFelix Fietkau 3197a7022e65SFelix Fietkau if (next_offset > start) 3198a7022e65SFelix Fietkau next_offset = start; 3199a7022e65SFelix Fietkau 3200a7022e65SFelix Fietkau data->has_next_tsf = true; 3201a7022e65SFelix Fietkau } 3202a7022e65SFelix Fietkau 3203a7022e65SFelix Fietkau if (data->absent) 3204a7022e65SFelix Fietkau next_offset = ieee80211_get_noa_absent_time(data, tsf); 3205a7022e65SFelix Fietkau 3206a7022e65SFelix Fietkau data->next_tsf = tsf + next_offset; 3207a7022e65SFelix Fietkau } 3208a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3209a7022e65SFelix Fietkau 3210a7022e65SFelix Fietkau int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3211a7022e65SFelix Fietkau struct ieee80211_noa_data *data, u32 tsf) 3212a7022e65SFelix Fietkau { 3213a7022e65SFelix Fietkau int ret = 0; 3214a7022e65SFelix Fietkau int i; 3215a7022e65SFelix Fietkau 3216a7022e65SFelix Fietkau memset(data, 0, sizeof(*data)); 3217a7022e65SFelix Fietkau 3218a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3219a7022e65SFelix Fietkau const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3220a7022e65SFelix Fietkau 3221a7022e65SFelix Fietkau if (!desc->count || !desc->duration) 3222a7022e65SFelix Fietkau continue; 3223a7022e65SFelix Fietkau 3224a7022e65SFelix Fietkau data->count[i] = desc->count; 3225a7022e65SFelix Fietkau data->desc[i].start = le32_to_cpu(desc->start_time); 3226a7022e65SFelix Fietkau data->desc[i].duration = le32_to_cpu(desc->duration); 3227a7022e65SFelix Fietkau data->desc[i].interval = le32_to_cpu(desc->interval); 3228a7022e65SFelix Fietkau 3229a7022e65SFelix Fietkau if (data->count[i] > 1 && 3230a7022e65SFelix Fietkau data->desc[i].interval < data->desc[i].duration) 3231a7022e65SFelix Fietkau continue; 3232a7022e65SFelix Fietkau 3233a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 3234a7022e65SFelix Fietkau ret++; 3235a7022e65SFelix Fietkau } 3236a7022e65SFelix Fietkau 3237a7022e65SFelix Fietkau if (ret) 3238a7022e65SFelix Fietkau ieee80211_update_p2p_noa(data, tsf); 3239a7022e65SFelix Fietkau 3240a7022e65SFelix Fietkau return ret; 3241a7022e65SFelix Fietkau } 3242a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 3243057d5f4bSThomas Pedersen 3244057d5f4bSThomas Pedersen void ieee80211_recalc_dtim(struct ieee80211_local *local, 3245057d5f4bSThomas Pedersen struct ieee80211_sub_if_data *sdata) 3246057d5f4bSThomas Pedersen { 3247057d5f4bSThomas Pedersen u64 tsf = drv_get_tsf(local, sdata); 3248057d5f4bSThomas Pedersen u64 dtim_count = 0; 3249057d5f4bSThomas Pedersen u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 3250057d5f4bSThomas Pedersen u8 dtim_period = sdata->vif.bss_conf.dtim_period; 3251057d5f4bSThomas Pedersen struct ps_data *ps; 3252057d5f4bSThomas Pedersen u8 bcns_from_dtim; 3253057d5f4bSThomas Pedersen 3254057d5f4bSThomas Pedersen if (tsf == -1ULL || !beacon_int || !dtim_period) 3255057d5f4bSThomas Pedersen return; 3256057d5f4bSThomas Pedersen 3257057d5f4bSThomas Pedersen if (sdata->vif.type == NL80211_IFTYPE_AP || 3258057d5f4bSThomas Pedersen sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 3259057d5f4bSThomas Pedersen if (!sdata->bss) 3260057d5f4bSThomas Pedersen return; 3261057d5f4bSThomas Pedersen 3262057d5f4bSThomas Pedersen ps = &sdata->bss->ps; 3263057d5f4bSThomas Pedersen } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 3264057d5f4bSThomas Pedersen ps = &sdata->u.mesh.ps; 3265057d5f4bSThomas Pedersen } else { 3266057d5f4bSThomas Pedersen return; 3267057d5f4bSThomas Pedersen } 3268057d5f4bSThomas Pedersen 3269057d5f4bSThomas Pedersen /* 3270057d5f4bSThomas Pedersen * actually finds last dtim_count, mac80211 will update in 3271057d5f4bSThomas Pedersen * __beacon_add_tim(). 3272057d5f4bSThomas Pedersen * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 3273057d5f4bSThomas Pedersen */ 3274057d5f4bSThomas Pedersen do_div(tsf, beacon_int); 3275057d5f4bSThomas Pedersen bcns_from_dtim = do_div(tsf, dtim_period); 3276057d5f4bSThomas Pedersen /* just had a DTIM */ 3277057d5f4bSThomas Pedersen if (!bcns_from_dtim) 3278057d5f4bSThomas Pedersen dtim_count = 0; 3279057d5f4bSThomas Pedersen else 3280057d5f4bSThomas Pedersen dtim_count = dtim_period - bcns_from_dtim; 3281057d5f4bSThomas Pedersen 3282057d5f4bSThomas Pedersen ps->dtim_count = dtim_count; 3283057d5f4bSThomas Pedersen } 328473de86a3SLuciano Coelho 328571e6195eSMichal Kazior static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 328671e6195eSMichal Kazior struct ieee80211_chanctx *ctx) 328771e6195eSMichal Kazior { 328871e6195eSMichal Kazior struct ieee80211_sub_if_data *sdata; 328971e6195eSMichal Kazior u8 radar_detect = 0; 329071e6195eSMichal Kazior 329171e6195eSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 329271e6195eSMichal Kazior 329371e6195eSMichal Kazior if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 329471e6195eSMichal Kazior return 0; 329571e6195eSMichal Kazior 329671e6195eSMichal Kazior list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) 329771e6195eSMichal Kazior if (sdata->reserved_radar_required) 329871e6195eSMichal Kazior radar_detect |= BIT(sdata->reserved_chandef.width); 329971e6195eSMichal Kazior 330071e6195eSMichal Kazior /* 330171e6195eSMichal Kazior * An in-place reservation context should not have any assigned vifs 330271e6195eSMichal Kazior * until it replaces the other context. 330371e6195eSMichal Kazior */ 330471e6195eSMichal Kazior WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 330571e6195eSMichal Kazior !list_empty(&ctx->assigned_vifs)); 330671e6195eSMichal Kazior 330771e6195eSMichal Kazior list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) 330871e6195eSMichal Kazior if (sdata->radar_required) 330971e6195eSMichal Kazior radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); 331071e6195eSMichal Kazior 331171e6195eSMichal Kazior return radar_detect; 331271e6195eSMichal Kazior } 331371e6195eSMichal Kazior 331473de86a3SLuciano Coelho int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 331573de86a3SLuciano Coelho const struct cfg80211_chan_def *chandef, 331673de86a3SLuciano Coelho enum ieee80211_chanctx_mode chanmode, 331773de86a3SLuciano Coelho u8 radar_detect) 331873de86a3SLuciano Coelho { 331973de86a3SLuciano Coelho struct ieee80211_local *local = sdata->local; 332073de86a3SLuciano Coelho struct ieee80211_sub_if_data *sdata_iter; 332173de86a3SLuciano Coelho enum nl80211_iftype iftype = sdata->wdev.iftype; 332273de86a3SLuciano Coelho struct ieee80211_chanctx *ctx; 332373de86a3SLuciano Coelho int total = 1; 3324e227300cSPurushottam Kushwaha struct iface_combination_params params = { 3325e227300cSPurushottam Kushwaha .radar_detect = radar_detect, 3326e227300cSPurushottam Kushwaha }; 332773de86a3SLuciano Coelho 332873de86a3SLuciano Coelho lockdep_assert_held(&local->chanctx_mtx); 332973de86a3SLuciano Coelho 333073de86a3SLuciano Coelho if (WARN_ON(hweight32(radar_detect) > 1)) 333173de86a3SLuciano Coelho return -EINVAL; 333273de86a3SLuciano Coelho 3333b6a55015SLuciano Coelho if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 3334b6a55015SLuciano Coelho !chandef->chan)) 333573de86a3SLuciano Coelho return -EINVAL; 333673de86a3SLuciano Coelho 333773de86a3SLuciano Coelho if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 333873de86a3SLuciano Coelho return -EINVAL; 333973de86a3SLuciano Coelho 3340ac668afeSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP || 3341ac668afeSJohannes Berg sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 3342ac668afeSJohannes Berg /* 3343ac668afeSJohannes Berg * always passing this is harmless, since it'll be the 3344ac668afeSJohannes Berg * same value that cfg80211 finds if it finds the same 3345ac668afeSJohannes Berg * interface ... and that's always allowed 3346ac668afeSJohannes Berg */ 3347ac668afeSJohannes Berg params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 3348ac668afeSJohannes Berg } 3349ac668afeSJohannes Berg 335073de86a3SLuciano Coelho /* Always allow software iftypes */ 335173de86a3SLuciano Coelho if (local->hw.wiphy->software_iftypes & BIT(iftype)) { 335273de86a3SLuciano Coelho if (radar_detect) 335373de86a3SLuciano Coelho return -EINVAL; 335473de86a3SLuciano Coelho return 0; 335573de86a3SLuciano Coelho } 335673de86a3SLuciano Coelho 3357e227300cSPurushottam Kushwaha if (chandef) 3358e227300cSPurushottam Kushwaha params.num_different_channels = 1; 335973de86a3SLuciano Coelho 336073de86a3SLuciano Coelho if (iftype != NL80211_IFTYPE_UNSPECIFIED) 3361e227300cSPurushottam Kushwaha params.iftype_num[iftype] = 1; 336273de86a3SLuciano Coelho 336373de86a3SLuciano Coelho list_for_each_entry(ctx, &local->chanctx_list, list) { 33645bcae31dSMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 33655bcae31dSMichal Kazior continue; 3366e227300cSPurushottam Kushwaha params.radar_detect |= 3367e227300cSPurushottam Kushwaha ieee80211_chanctx_radar_detect(local, ctx); 336873de86a3SLuciano Coelho if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 3369e227300cSPurushottam Kushwaha params.num_different_channels++; 337073de86a3SLuciano Coelho continue; 337173de86a3SLuciano Coelho } 3372b6a55015SLuciano Coelho if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 337373de86a3SLuciano Coelho cfg80211_chandef_compatible(chandef, 337473de86a3SLuciano Coelho &ctx->conf.def)) 337573de86a3SLuciano Coelho continue; 3376e227300cSPurushottam Kushwaha params.num_different_channels++; 337773de86a3SLuciano Coelho } 337873de86a3SLuciano Coelho 337973de86a3SLuciano Coelho list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 338073de86a3SLuciano Coelho struct wireless_dev *wdev_iter; 338173de86a3SLuciano Coelho 338273de86a3SLuciano Coelho wdev_iter = &sdata_iter->wdev; 338373de86a3SLuciano Coelho 338473de86a3SLuciano Coelho if (sdata_iter == sdata || 33850f611d28SAndrei Otcheretianski !ieee80211_sdata_running(sdata_iter) || 338673de86a3SLuciano Coelho local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) 338773de86a3SLuciano Coelho continue; 338873de86a3SLuciano Coelho 3389e227300cSPurushottam Kushwaha params.iftype_num[wdev_iter->iftype]++; 339073de86a3SLuciano Coelho total++; 339173de86a3SLuciano Coelho } 339273de86a3SLuciano Coelho 3393e227300cSPurushottam Kushwaha if (total == 1 && !params.radar_detect) 339473de86a3SLuciano Coelho return 0; 339573de86a3SLuciano Coelho 3396e227300cSPurushottam Kushwaha return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 339773de86a3SLuciano Coelho } 33986fa001bcSMichal Kazior 33996fa001bcSMichal Kazior static void 34006fa001bcSMichal Kazior ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 34016fa001bcSMichal Kazior void *data) 34026fa001bcSMichal Kazior { 34036fa001bcSMichal Kazior u32 *max_num_different_channels = data; 34046fa001bcSMichal Kazior 34056fa001bcSMichal Kazior *max_num_different_channels = max(*max_num_different_channels, 34066fa001bcSMichal Kazior c->num_different_channels); 34076fa001bcSMichal Kazior } 34086fa001bcSMichal Kazior 34096fa001bcSMichal Kazior int ieee80211_max_num_channels(struct ieee80211_local *local) 34106fa001bcSMichal Kazior { 34116fa001bcSMichal Kazior struct ieee80211_sub_if_data *sdata; 34126fa001bcSMichal Kazior struct ieee80211_chanctx *ctx; 34136fa001bcSMichal Kazior u32 max_num_different_channels = 1; 34146fa001bcSMichal Kazior int err; 3415e227300cSPurushottam Kushwaha struct iface_combination_params params = {0}; 34166fa001bcSMichal Kazior 34176fa001bcSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 34186fa001bcSMichal Kazior 34196fa001bcSMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 34205bcae31dSMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 34215bcae31dSMichal Kazior continue; 34225bcae31dSMichal Kazior 3423e227300cSPurushottam Kushwaha params.num_different_channels++; 34246fa001bcSMichal Kazior 3425e227300cSPurushottam Kushwaha params.radar_detect |= 3426e227300cSPurushottam Kushwaha ieee80211_chanctx_radar_detect(local, ctx); 34276fa001bcSMichal Kazior } 34286fa001bcSMichal Kazior 34296fa001bcSMichal Kazior list_for_each_entry_rcu(sdata, &local->interfaces, list) 3430e227300cSPurushottam Kushwaha params.iftype_num[sdata->wdev.iftype]++; 34316fa001bcSMichal Kazior 3432e227300cSPurushottam Kushwaha err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 3433e227300cSPurushottam Kushwaha ieee80211_iter_max_chans, 34346fa001bcSMichal Kazior &max_num_different_channels); 34356fa001bcSMichal Kazior if (err < 0) 34366fa001bcSMichal Kazior return err; 34376fa001bcSMichal Kazior 34386fa001bcSMichal Kazior return max_num_different_channels; 34396fa001bcSMichal Kazior } 344040b861a0SArik Nemtsov 344140b861a0SArik Nemtsov u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 344240b861a0SArik Nemtsov { 344340b861a0SArik Nemtsov *buf++ = WLAN_EID_VENDOR_SPECIFIC; 344440b861a0SArik Nemtsov *buf++ = 7; /* len */ 344540b861a0SArik Nemtsov *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 344640b861a0SArik Nemtsov *buf++ = 0x50; 344740b861a0SArik Nemtsov *buf++ = 0xf2; 344840b861a0SArik Nemtsov *buf++ = 2; /* WME */ 344940b861a0SArik Nemtsov *buf++ = 0; /* WME info */ 345040b861a0SArik Nemtsov *buf++ = 1; /* WME ver */ 345140b861a0SArik Nemtsov *buf++ = qosinfo; /* U-APSD no in use */ 345240b861a0SArik Nemtsov 345340b861a0SArik Nemtsov return buf; 345440b861a0SArik Nemtsov } 3455ba8c3d6fSFelix Fietkau 3456f2ac7e30SMichal Kazior void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 3457f2ac7e30SMichal Kazior unsigned long *frame_cnt, 3458f2ac7e30SMichal Kazior unsigned long *byte_cnt) 3459f2ac7e30SMichal Kazior { 3460f2ac7e30SMichal Kazior struct txq_info *txqi = to_txq_info(txq); 3461bb42f2d1SToke Høiland-Jørgensen u32 frag_cnt = 0, frag_bytes = 0; 3462bb42f2d1SToke Høiland-Jørgensen struct sk_buff *skb; 3463bb42f2d1SToke Høiland-Jørgensen 3464bb42f2d1SToke Høiland-Jørgensen skb_queue_walk(&txqi->frags, skb) { 3465bb42f2d1SToke Høiland-Jørgensen frag_cnt++; 3466bb42f2d1SToke Høiland-Jørgensen frag_bytes += skb->len; 3467bb42f2d1SToke Høiland-Jørgensen } 3468f2ac7e30SMichal Kazior 3469f2ac7e30SMichal Kazior if (frame_cnt) 3470bb42f2d1SToke Høiland-Jørgensen *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 3471f2ac7e30SMichal Kazior 3472f2ac7e30SMichal Kazior if (byte_cnt) 3473bb42f2d1SToke Høiland-Jørgensen *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 3474f2ac7e30SMichal Kazior } 3475f2ac7e30SMichal Kazior EXPORT_SYMBOL(ieee80211_txq_get_depth); 3476f438ceb8SEmmanuel Grumbach 3477f438ceb8SEmmanuel Grumbach const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 3478f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 3479f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 3480f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 3481f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 3482f438ceb8SEmmanuel Grumbach }; 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