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> 6c2d1560aSJohannes Berg * 7c2d1560aSJohannes Berg * This program is free software; you can redistribute it and/or modify 8c2d1560aSJohannes Berg * it under the terms of the GNU General Public License version 2 as 9c2d1560aSJohannes Berg * published by the Free Software Foundation. 10c2d1560aSJohannes Berg * 11c2d1560aSJohannes Berg * utilities for mac80211 12c2d1560aSJohannes Berg */ 13c2d1560aSJohannes Berg 14c2d1560aSJohannes Berg #include <net/mac80211.h> 15c2d1560aSJohannes Berg #include <linux/netdevice.h> 16bc3b2d7fSPaul Gortmaker #include <linux/export.h> 17c2d1560aSJohannes Berg #include <linux/types.h> 18c2d1560aSJohannes Berg #include <linux/slab.h> 19c2d1560aSJohannes Berg #include <linux/skbuff.h> 20c2d1560aSJohannes Berg #include <linux/etherdevice.h> 21c2d1560aSJohannes Berg #include <linux/if_arp.h> 22c2d1560aSJohannes Berg #include <linux/bitmap.h> 23dd76986bSJohannes Berg #include <linux/crc32.h> 24881d966bSEric W. Biederman #include <net/net_namespace.h> 25c2d1560aSJohannes Berg #include <net/cfg80211.h> 26dabeb344SJohannes Berg #include <net/rtnetlink.h> 27c2d1560aSJohannes Berg 28c2d1560aSJohannes Berg #include "ieee80211_i.h" 2924487981SJohannes Berg #include "driver-ops.h" 302c8dccc7SJohannes Berg #include "rate.h" 31ee385855SLuis Carlos Cobo #include "mesh.h" 32c2d1560aSJohannes Berg #include "wme.h" 33f2753ddbSJohannes Berg #include "led.h" 34fffd0934SJohannes Berg #include "wep.h" 35c2d1560aSJohannes Berg 36c2d1560aSJohannes Berg /* privid for wiphys to determine whether they belong to us or not */ 378a47cea7SJohannes Berg const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; 38c2d1560aSJohannes Berg 399a95371aSLuis R. Rodriguez struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) 409a95371aSLuis R. Rodriguez { 419a95371aSLuis R. Rodriguez struct ieee80211_local *local; 429a95371aSLuis R. Rodriguez BUG_ON(!wiphy); 439a95371aSLuis R. Rodriguez 449a95371aSLuis R. Rodriguez local = wiphy_priv(wiphy); 459a95371aSLuis R. Rodriguez return &local->hw; 469a95371aSLuis R. Rodriguez } 479a95371aSLuis R. Rodriguez EXPORT_SYMBOL(wiphy_to_ieee80211_hw); 48c2d1560aSJohannes Berg 4971364716SRon Rindjunsky u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 5005c914feSJohannes Berg enum nl80211_iftype type) 51c2d1560aSJohannes Berg { 52a494bb1cSHarvey Harrison __le16 fc = hdr->frame_control; 53c2d1560aSJohannes Berg 5498f0b0a3SRon Rindjunsky /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ 5598f0b0a3SRon Rindjunsky if (len < 16) 56c2d1560aSJohannes Berg return NULL; 57c2d1560aSJohannes Berg 58a494bb1cSHarvey Harrison if (ieee80211_is_data(fc)) { 5998f0b0a3SRon Rindjunsky if (len < 24) /* drop incorrect hdr len (data) */ 6098f0b0a3SRon Rindjunsky return NULL; 61a494bb1cSHarvey Harrison 62a494bb1cSHarvey Harrison if (ieee80211_has_a4(fc)) 63c2d1560aSJohannes Berg return NULL; 64a494bb1cSHarvey Harrison if (ieee80211_has_tods(fc)) 65a494bb1cSHarvey Harrison return hdr->addr1; 66a494bb1cSHarvey Harrison if (ieee80211_has_fromds(fc)) 67c2d1560aSJohannes Berg return hdr->addr2; 68a494bb1cSHarvey Harrison 69c2d1560aSJohannes Berg return hdr->addr3; 70c2d1560aSJohannes Berg } 71a494bb1cSHarvey Harrison 72a494bb1cSHarvey Harrison if (ieee80211_is_mgmt(fc)) { 7398f0b0a3SRon Rindjunsky if (len < 24) /* drop incorrect hdr len (mgmt) */ 7498f0b0a3SRon Rindjunsky return NULL; 75c2d1560aSJohannes Berg return hdr->addr3; 76a494bb1cSHarvey Harrison } 77a494bb1cSHarvey Harrison 78a494bb1cSHarvey Harrison if (ieee80211_is_ctl(fc)) { 79a494bb1cSHarvey Harrison if (ieee80211_is_pspoll(fc)) 80c2d1560aSJohannes Berg return hdr->addr1; 81a494bb1cSHarvey Harrison 82a494bb1cSHarvey Harrison if (ieee80211_is_back_req(fc)) { 8371364716SRon Rindjunsky switch (type) { 8405c914feSJohannes Berg case NL80211_IFTYPE_STATION: 8571364716SRon Rindjunsky return hdr->addr2; 8605c914feSJohannes Berg case NL80211_IFTYPE_AP: 8705c914feSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 8871364716SRon Rindjunsky return hdr->addr1; 8971364716SRon Rindjunsky default: 90a494bb1cSHarvey Harrison break; /* fall through to the return */ 9171364716SRon Rindjunsky } 9271364716SRon Rindjunsky } 93c2d1560aSJohannes Berg } 94c2d1560aSJohannes Berg 95c2d1560aSJohannes Berg return NULL; 96c2d1560aSJohannes Berg } 97c2d1560aSJohannes Berg 985cf121c3SJohannes Berg void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 99c2d1560aSJohannes Berg { 100252b86c4SJohannes Berg struct sk_buff *skb; 1012de8e0d9SJohannes Berg struct ieee80211_hdr *hdr; 102c2d1560aSJohannes Berg 103252b86c4SJohannes Berg skb_queue_walk(&tx->skbs, skb) { 1042de8e0d9SJohannes Berg hdr = (struct ieee80211_hdr *) skb->data; 105c2d1560aSJohannes Berg hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 106252b86c4SJohannes Berg } 107c2d1560aSJohannes Berg } 108c2d1560aSJohannes Berg 1094ee73f33SMichal Kazior int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 110438b61b7SSimon Wunderlich int rate, int erp, int short_preamble, 111438b61b7SSimon Wunderlich int shift) 112c2d1560aSJohannes Berg { 113c2d1560aSJohannes Berg int dur; 114c2d1560aSJohannes Berg 115c2d1560aSJohannes Berg /* calculate duration (in microseconds, rounded up to next higher 116c2d1560aSJohannes Berg * integer if it includes a fractional microsecond) to send frame of 117c2d1560aSJohannes Berg * len bytes (does not include FCS) at the given rate. Duration will 118c2d1560aSJohannes Berg * also include SIFS. 119c2d1560aSJohannes Berg * 120c2d1560aSJohannes Berg * rate is in 100 kbps, so divident is multiplied by 10 in the 121c2d1560aSJohannes Berg * DIV_ROUND_UP() operations. 122438b61b7SSimon Wunderlich * 123438b61b7SSimon Wunderlich * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and 124438b61b7SSimon Wunderlich * is assumed to be 0 otherwise. 125c2d1560aSJohannes Berg */ 126c2d1560aSJohannes Berg 1274ee73f33SMichal Kazior if (band == IEEE80211_BAND_5GHZ || erp) { 128c2d1560aSJohannes Berg /* 129c2d1560aSJohannes Berg * OFDM: 130c2d1560aSJohannes Berg * 131c2d1560aSJohannes Berg * N_DBPS = DATARATE x 4 132c2d1560aSJohannes Berg * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 133c2d1560aSJohannes Berg * (16 = SIGNAL time, 6 = tail bits) 134c2d1560aSJohannes Berg * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 135c2d1560aSJohannes Berg * 136c2d1560aSJohannes Berg * T_SYM = 4 usec 137438b61b7SSimon Wunderlich * 802.11a - 18.5.2: aSIFSTime = 16 usec 138c2d1560aSJohannes Berg * 802.11g - 19.8.4: aSIFSTime = 10 usec + 139c2d1560aSJohannes Berg * signal ext = 6 usec 140c2d1560aSJohannes Berg */ 141c2d1560aSJohannes Berg dur = 16; /* SIFS + signal ext */ 142438b61b7SSimon Wunderlich dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 143438b61b7SSimon Wunderlich dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 144438b61b7SSimon Wunderlich 145438b61b7SSimon Wunderlich /* IEEE 802.11-2012 18.3.2.4: all values above are: 146438b61b7SSimon Wunderlich * * times 4 for 5 MHz 147438b61b7SSimon Wunderlich * * times 2 for 10 MHz 148438b61b7SSimon Wunderlich */ 149438b61b7SSimon Wunderlich dur *= 1 << shift; 1502103dec1SSimon Wunderlich 1512103dec1SSimon Wunderlich /* rates should already consider the channel bandwidth, 1522103dec1SSimon Wunderlich * don't apply divisor again. 1532103dec1SSimon Wunderlich */ 1542103dec1SSimon Wunderlich dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 1552103dec1SSimon Wunderlich 4 * rate); /* T_SYM x N_SYM */ 156c2d1560aSJohannes Berg } else { 157c2d1560aSJohannes Berg /* 158c2d1560aSJohannes Berg * 802.11b or 802.11g with 802.11b compatibility: 159c2d1560aSJohannes Berg * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 160c2d1560aSJohannes Berg * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 161c2d1560aSJohannes Berg * 162c2d1560aSJohannes Berg * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 163c2d1560aSJohannes Berg * aSIFSTime = 10 usec 164c2d1560aSJohannes Berg * aPreambleLength = 144 usec or 72 usec with short preamble 165c2d1560aSJohannes Berg * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 166c2d1560aSJohannes Berg */ 167c2d1560aSJohannes Berg dur = 10; /* aSIFSTime = 10 usec */ 168c2d1560aSJohannes Berg dur += short_preamble ? (72 + 24) : (144 + 48); 169c2d1560aSJohannes Berg 170c2d1560aSJohannes Berg dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 171c2d1560aSJohannes Berg } 172c2d1560aSJohannes Berg 173c2d1560aSJohannes Berg return dur; 174c2d1560aSJohannes Berg } 175c2d1560aSJohannes Berg 176c2d1560aSJohannes Berg /* Exported duration function for driver use */ 17732bfd35dSJohannes Berg __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 17832bfd35dSJohannes Berg struct ieee80211_vif *vif, 1794ee73f33SMichal Kazior enum ieee80211_band band, 1808318d78aSJohannes Berg size_t frame_len, 1818318d78aSJohannes Berg struct ieee80211_rate *rate) 182c2d1560aSJohannes Berg { 18325d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 184c2d1560aSJohannes Berg u16 dur; 185438b61b7SSimon Wunderlich int erp, shift = 0; 18625d834e1SJohannes Berg bool short_preamble = false; 187c2d1560aSJohannes Berg 1888318d78aSJohannes Berg erp = 0; 18925d834e1SJohannes Berg if (vif) { 19025d834e1SJohannes Berg sdata = vif_to_sdata(vif); 191bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 1928318d78aSJohannes Berg if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 1938318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 194438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 19525d834e1SJohannes Berg } 1968318d78aSJohannes Berg 1974ee73f33SMichal Kazior dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 198438b61b7SSimon Wunderlich short_preamble, shift); 199c2d1560aSJohannes Berg 200c2d1560aSJohannes Berg return cpu_to_le16(dur); 201c2d1560aSJohannes Berg } 202c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_generic_frame_duration); 203c2d1560aSJohannes Berg 20432bfd35dSJohannes Berg __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 20532bfd35dSJohannes Berg struct ieee80211_vif *vif, size_t frame_len, 206e039fa4aSJohannes Berg const struct ieee80211_tx_info *frame_txctl) 207c2d1560aSJohannes Berg { 208c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 209c2d1560aSJohannes Berg struct ieee80211_rate *rate; 21025d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 211471b3efdSJohannes Berg bool short_preamble; 2122103dec1SSimon Wunderlich int erp, shift = 0, bitrate; 213c2d1560aSJohannes Berg u16 dur; 2142e92e6f2SJohannes Berg struct ieee80211_supported_band *sband; 2152e92e6f2SJohannes Berg 2164ee73f33SMichal Kazior sband = local->hw.wiphy->bands[frame_txctl->band]; 217c2d1560aSJohannes Berg 21825d834e1SJohannes Berg short_preamble = false; 2197e9ed188SDaniel Drake 220e039fa4aSJohannes Berg rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 2218318d78aSJohannes Berg 2228318d78aSJohannes Berg erp = 0; 22325d834e1SJohannes Berg if (vif) { 22425d834e1SJohannes Berg sdata = vif_to_sdata(vif); 225bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 2268318d78aSJohannes Berg if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 2278318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 228438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 22925d834e1SJohannes Berg } 230c2d1560aSJohannes Berg 2312103dec1SSimon Wunderlich bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 2322103dec1SSimon Wunderlich 233c2d1560aSJohannes Berg /* CTS duration */ 2342103dec1SSimon Wunderlich dur = ieee80211_frame_duration(sband->band, 10, bitrate, 235438b61b7SSimon Wunderlich erp, short_preamble, shift); 236c2d1560aSJohannes Berg /* Data frame duration */ 2372103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 238438b61b7SSimon Wunderlich erp, short_preamble, shift); 239c2d1560aSJohannes Berg /* ACK duration */ 2402103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, 10, bitrate, 241438b61b7SSimon Wunderlich erp, short_preamble, shift); 242c2d1560aSJohannes Berg 243c2d1560aSJohannes Berg return cpu_to_le16(dur); 244c2d1560aSJohannes Berg } 245c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_rts_duration); 246c2d1560aSJohannes Berg 24732bfd35dSJohannes Berg __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 24832bfd35dSJohannes Berg struct ieee80211_vif *vif, 249c2d1560aSJohannes Berg size_t frame_len, 250e039fa4aSJohannes Berg const struct ieee80211_tx_info *frame_txctl) 251c2d1560aSJohannes Berg { 252c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 253c2d1560aSJohannes Berg struct ieee80211_rate *rate; 25425d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 255471b3efdSJohannes Berg bool short_preamble; 2562103dec1SSimon Wunderlich int erp, shift = 0, bitrate; 257c2d1560aSJohannes Berg u16 dur; 2582e92e6f2SJohannes Berg struct ieee80211_supported_band *sband; 2592e92e6f2SJohannes Berg 2604ee73f33SMichal Kazior sband = local->hw.wiphy->bands[frame_txctl->band]; 261c2d1560aSJohannes Berg 26225d834e1SJohannes Berg short_preamble = false; 2637e9ed188SDaniel Drake 264e039fa4aSJohannes Berg rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 2658318d78aSJohannes Berg erp = 0; 26625d834e1SJohannes Berg if (vif) { 26725d834e1SJohannes Berg sdata = vif_to_sdata(vif); 268bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 2698318d78aSJohannes Berg if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 2708318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 271438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 27225d834e1SJohannes Berg } 273c2d1560aSJohannes Berg 2742103dec1SSimon Wunderlich bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 2752103dec1SSimon Wunderlich 276c2d1560aSJohannes Berg /* Data frame duration */ 2772103dec1SSimon Wunderlich dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 278438b61b7SSimon Wunderlich erp, short_preamble, shift); 279e039fa4aSJohannes Berg if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 280c2d1560aSJohannes Berg /* ACK duration */ 2812103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, 10, bitrate, 282438b61b7SSimon Wunderlich erp, short_preamble, shift); 283c2d1560aSJohannes Berg } 284c2d1560aSJohannes Berg 285c2d1560aSJohannes Berg return cpu_to_le16(dur); 286c2d1560aSJohannes Berg } 287c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_ctstoself_duration); 288c2d1560aSJohannes Berg 2893a25a8c8SJohannes Berg void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) 2903a25a8c8SJohannes Berg { 2913a25a8c8SJohannes Berg struct ieee80211_sub_if_data *sdata; 292a6f38ac3SJohannes Berg int n_acs = IEEE80211_NUM_ACS; 293a6f38ac3SJohannes Berg 294a6f38ac3SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 295a6f38ac3SJohannes Berg n_acs = 1; 2963a25a8c8SJohannes Berg 2973a25a8c8SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 2983a25a8c8SJohannes Berg int ac; 2993a25a8c8SJohannes Berg 300f142c6b9SJohannes Berg if (!sdata->dev) 301f142c6b9SJohannes Berg continue; 302f142c6b9SJohannes Berg 3033a25a8c8SJohannes Berg if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && 3043a25a8c8SJohannes Berg local->queue_stop_reasons[sdata->vif.cab_queue] != 0) 3053a25a8c8SJohannes Berg continue; 3063a25a8c8SJohannes Berg 307a6f38ac3SJohannes Berg for (ac = 0; ac < n_acs; ac++) { 3083a25a8c8SJohannes Berg int ac_queue = sdata->vif.hw_queue[ac]; 3093a25a8c8SJohannes Berg 3103a25a8c8SJohannes Berg if (ac_queue == queue || 3113a25a8c8SJohannes Berg (sdata->vif.cab_queue == queue && 3123a25a8c8SJohannes Berg local->queue_stop_reasons[ac_queue] == 0 && 3133a25a8c8SJohannes Berg skb_queue_empty(&local->pending[ac_queue]))) 3143a25a8c8SJohannes Berg netif_wake_subqueue(sdata->dev, ac); 3153a25a8c8SJohannes Berg } 3163a25a8c8SJohannes Berg } 3173a25a8c8SJohannes Berg } 3183a25a8c8SJohannes Berg 319ce7c9111SKalle Valo static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 320cca07b00SLuciano Coelho enum queue_stop_reason reason, 321cca07b00SLuciano Coelho bool refcounted) 322c2d1560aSJohannes Berg { 323c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 324c2d1560aSJohannes Berg 325b5878a2dSJohannes Berg trace_wake_queue(local, queue, reason); 326b5878a2dSJohannes Berg 327e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 32896f5e66eSJohannes Berg return; 32996f5e66eSJohannes Berg 330ada15125SJohannes Berg if (!test_bit(reason, &local->queue_stop_reasons[queue])) 331ada15125SJohannes Berg return; 332ada15125SJohannes Berg 333cca07b00SLuciano Coelho if (!refcounted) 334cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason] = 0; 335cca07b00SLuciano Coelho else 336cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason]--; 337cca07b00SLuciano Coelho 338cca07b00SLuciano Coelho if (local->q_stop_reasons[queue][reason] == 0) 339ce7c9111SKalle Valo __clear_bit(reason, &local->queue_stop_reasons[queue]); 340ce7c9111SKalle Valo 341ce7c9111SKalle Valo if (local->queue_stop_reasons[queue] != 0) 342ce7c9111SKalle Valo /* someone still has this queue stopped */ 343ce7c9111SKalle Valo return; 344ce7c9111SKalle Valo 3457236fe29SJohannes Berg if (skb_queue_empty(&local->pending[queue])) { 346cf0277e7SJohannes Berg rcu_read_lock(); 3473a25a8c8SJohannes Berg ieee80211_propagate_queue_wake(local, queue); 348cf0277e7SJohannes Berg rcu_read_unlock(); 3497236fe29SJohannes Berg } else 3507236fe29SJohannes Berg tasklet_schedule(&local->tx_pending_tasklet); 351c2d1560aSJohannes Berg } 352ce7c9111SKalle Valo 35396f5e66eSJohannes Berg void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 354cca07b00SLuciano Coelho enum queue_stop_reason reason, 355cca07b00SLuciano Coelho bool refcounted) 356ce7c9111SKalle Valo { 357ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 358ce7c9111SKalle Valo unsigned long flags; 359ce7c9111SKalle Valo 360ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 361cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, queue, reason, refcounted); 362ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 363ce7c9111SKalle Valo } 364ce7c9111SKalle Valo 365ce7c9111SKalle Valo void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 366ce7c9111SKalle Valo { 367ce7c9111SKalle Valo ieee80211_wake_queue_by_reason(hw, queue, 368cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 369cca07b00SLuciano Coelho false); 370ce7c9111SKalle Valo } 371c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_wake_queue); 372c2d1560aSJohannes Berg 373ce7c9111SKalle Valo static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 374cca07b00SLuciano Coelho enum queue_stop_reason reason, 375cca07b00SLuciano Coelho bool refcounted) 376c2d1560aSJohannes Berg { 377c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 378cf0277e7SJohannes Berg struct ieee80211_sub_if_data *sdata; 379a6f38ac3SJohannes Berg int n_acs = IEEE80211_NUM_ACS; 380c2d1560aSJohannes Berg 381b5878a2dSJohannes Berg trace_stop_queue(local, queue, reason); 382b5878a2dSJohannes Berg 383e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 38496f5e66eSJohannes Berg return; 38596f5e66eSJohannes Berg 386cca07b00SLuciano Coelho if (!refcounted) 387cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason] = 1; 388cca07b00SLuciano Coelho else 389cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason]++; 390ada15125SJohannes Berg 391cca07b00SLuciano Coelho if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) 392cca07b00SLuciano Coelho return; 393cf0277e7SJohannes Berg 394a6f38ac3SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 395a6f38ac3SJohannes Berg n_acs = 1; 396a6f38ac3SJohannes Berg 397cf0277e7SJohannes Berg rcu_read_lock(); 3983a25a8c8SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 3993a25a8c8SJohannes Berg int ac; 4003a25a8c8SJohannes Berg 401f142c6b9SJohannes Berg if (!sdata->dev) 402f142c6b9SJohannes Berg continue; 403f142c6b9SJohannes Berg 404a6f38ac3SJohannes Berg for (ac = 0; ac < n_acs; ac++) { 4053a25a8c8SJohannes Berg if (sdata->vif.hw_queue[ac] == queue || 4063a25a8c8SJohannes Berg sdata->vif.cab_queue == queue) 4073a25a8c8SJohannes Berg netif_stop_subqueue(sdata->dev, ac); 4083a25a8c8SJohannes Berg } 4093a25a8c8SJohannes Berg } 410cf0277e7SJohannes Berg rcu_read_unlock(); 411c2d1560aSJohannes Berg } 412ce7c9111SKalle Valo 41396f5e66eSJohannes Berg void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 414cca07b00SLuciano Coelho enum queue_stop_reason reason, 415cca07b00SLuciano Coelho bool refcounted) 416ce7c9111SKalle Valo { 417ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 418ce7c9111SKalle Valo unsigned long flags; 419ce7c9111SKalle Valo 420ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 421cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, queue, reason, refcounted); 422ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 423ce7c9111SKalle Valo } 424ce7c9111SKalle Valo 425ce7c9111SKalle Valo void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 426ce7c9111SKalle Valo { 427ce7c9111SKalle Valo ieee80211_stop_queue_by_reason(hw, queue, 428cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 429cca07b00SLuciano Coelho false); 430ce7c9111SKalle Valo } 431c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_stop_queue); 432c2d1560aSJohannes Berg 4338f77f384SJohannes Berg void ieee80211_add_pending_skb(struct ieee80211_local *local, 4348f77f384SJohannes Berg struct sk_buff *skb) 4358f77f384SJohannes Berg { 4368f77f384SJohannes Berg struct ieee80211_hw *hw = &local->hw; 4378f77f384SJohannes Berg unsigned long flags; 438a7bc376cSJohannes Berg struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 4393a25a8c8SJohannes Berg int queue = info->hw_queue; 440a7bc376cSJohannes Berg 441a7bc376cSJohannes Berg if (WARN_ON(!info->control.vif)) { 442d4fa14cdSFelix Fietkau ieee80211_free_txskb(&local->hw, skb); 443a7bc376cSJohannes Berg return; 444a7bc376cSJohannes Berg } 4458f77f384SJohannes Berg 4468f77f384SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 447cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 448cca07b00SLuciano Coelho false); 4493b8d81e0SJohannes Berg __skb_queue_tail(&local->pending[queue], skb); 450cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 451cca07b00SLuciano Coelho false); 4528f77f384SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 4538f77f384SJohannes Berg } 4548f77f384SJohannes Berg 455e3685e03SJohannes Berg void ieee80211_add_pending_skbs(struct ieee80211_local *local, 456e3685e03SJohannes Berg struct sk_buff_head *skbs) 4578f77f384SJohannes Berg { 4588f77f384SJohannes Berg struct ieee80211_hw *hw = &local->hw; 4598f77f384SJohannes Berg struct sk_buff *skb; 4608f77f384SJohannes Berg unsigned long flags; 461b0b97a8aSJohannes Berg int queue, i; 4628f77f384SJohannes Berg 4638f77f384SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 4648f77f384SJohannes Berg while ((skb = skb_dequeue(skbs))) { 465a7bc376cSJohannes Berg struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 466a7bc376cSJohannes Berg 467a7bc376cSJohannes Berg if (WARN_ON(!info->control.vif)) { 468d4fa14cdSFelix Fietkau ieee80211_free_txskb(&local->hw, skb); 469a7bc376cSJohannes Berg continue; 470a7bc376cSJohannes Berg } 471a7bc376cSJohannes Berg 4723a25a8c8SJohannes Berg queue = info->hw_queue; 4734644ae89SJohannes Berg 4744644ae89SJohannes Berg __ieee80211_stop_queue(hw, queue, 475cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 476cca07b00SLuciano Coelho false); 4774644ae89SJohannes Berg 4783b8d81e0SJohannes Berg __skb_queue_tail(&local->pending[queue], skb); 4798f77f384SJohannes Berg } 4808f77f384SJohannes Berg 4813b8d81e0SJohannes Berg for (i = 0; i < hw->queues; i++) 4828f77f384SJohannes Berg __ieee80211_wake_queue(hw, i, 483cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 484cca07b00SLuciano Coelho false); 4858f77f384SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 4868f77f384SJohannes Berg } 4878f77f384SJohannes Berg 488ce7c9111SKalle Valo void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 489445ea4e8SJohannes Berg unsigned long queues, 490cca07b00SLuciano Coelho enum queue_stop_reason reason, 491cca07b00SLuciano Coelho bool refcounted) 492c2d1560aSJohannes Berg { 493ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 494ce7c9111SKalle Valo unsigned long flags; 495c2d1560aSJohannes Berg int i; 496c2d1560aSJohannes Berg 497ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 498ce7c9111SKalle Valo 499445ea4e8SJohannes Berg for_each_set_bit(i, &queues, hw->queues) 500cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, i, reason, refcounted); 501ce7c9111SKalle Valo 502ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 503ce7c9111SKalle Valo } 504ce7c9111SKalle Valo 505ce7c9111SKalle Valo void ieee80211_stop_queues(struct ieee80211_hw *hw) 506ce7c9111SKalle Valo { 507445ea4e8SJohannes Berg ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 508cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 509cca07b00SLuciano Coelho false); 510c2d1560aSJohannes Berg } 511c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_stop_queues); 512c2d1560aSJohannes Berg 51392ab8535STomas Winkler int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 51492ab8535STomas Winkler { 51592ab8535STomas Winkler struct ieee80211_local *local = hw_to_local(hw); 5163b8d81e0SJohannes Berg unsigned long flags; 5173b8d81e0SJohannes Berg int ret; 51896f5e66eSJohannes Berg 519e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 52096f5e66eSJohannes Berg return true; 52196f5e66eSJohannes Berg 5223b8d81e0SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 5232419ea14SThomas Pedersen ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 5242419ea14SThomas Pedersen &local->queue_stop_reasons[queue]); 5253b8d81e0SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 5263b8d81e0SJohannes Berg return ret; 52792ab8535STomas Winkler } 52892ab8535STomas Winkler EXPORT_SYMBOL(ieee80211_queue_stopped); 52992ab8535STomas Winkler 530ce7c9111SKalle Valo void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 531445ea4e8SJohannes Berg unsigned long queues, 532cca07b00SLuciano Coelho enum queue_stop_reason reason, 533cca07b00SLuciano Coelho bool refcounted) 534c2d1560aSJohannes Berg { 535ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 536ce7c9111SKalle Valo unsigned long flags; 537c2d1560aSJohannes Berg int i; 538c2d1560aSJohannes Berg 539ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 540ce7c9111SKalle Valo 541445ea4e8SJohannes Berg for_each_set_bit(i, &queues, hw->queues) 542cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, i, reason, refcounted); 543ce7c9111SKalle Valo 544ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 545ce7c9111SKalle Valo } 546ce7c9111SKalle Valo 547ce7c9111SKalle Valo void ieee80211_wake_queues(struct ieee80211_hw *hw) 548ce7c9111SKalle Valo { 549445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 550cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 551cca07b00SLuciano Coelho false); 552c2d1560aSJohannes Berg } 553c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_wake_queues); 554dabeb344SJohannes Berg 55526da23b6SLuciano Coelho static unsigned int 55626da23b6SLuciano Coelho ieee80211_get_vif_queues(struct ieee80211_local *local, 55739ecc01dSJohannes Berg struct ieee80211_sub_if_data *sdata) 55839ecc01dSJohannes Berg { 55926da23b6SLuciano Coelho unsigned int queues; 56039ecc01dSJohannes Berg 56139ecc01dSJohannes Berg if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { 56239ecc01dSJohannes Berg int ac; 56339ecc01dSJohannes Berg 56439ecc01dSJohannes Berg queues = 0; 56539ecc01dSJohannes Berg 56639ecc01dSJohannes Berg for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 56739ecc01dSJohannes Berg queues |= BIT(sdata->vif.hw_queue[ac]); 56839ecc01dSJohannes Berg if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 56939ecc01dSJohannes Berg queues |= BIT(sdata->vif.cab_queue); 57039ecc01dSJohannes Berg } else { 57139ecc01dSJohannes Berg /* all queues */ 57239ecc01dSJohannes Berg queues = BIT(local->hw.queues) - 1; 57339ecc01dSJohannes Berg } 57439ecc01dSJohannes Berg 57526da23b6SLuciano Coelho return queues; 57626da23b6SLuciano Coelho } 57726da23b6SLuciano Coelho 57826da23b6SLuciano Coelho void ieee80211_flush_queues(struct ieee80211_local *local, 57926da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata) 58026da23b6SLuciano Coelho { 58126da23b6SLuciano Coelho unsigned int queues; 58226da23b6SLuciano Coelho 58326da23b6SLuciano Coelho if (!local->ops->flush) 58426da23b6SLuciano Coelho return; 58526da23b6SLuciano Coelho 58626da23b6SLuciano Coelho queues = ieee80211_get_vif_queues(local, sdata); 58726da23b6SLuciano Coelho 58859f48fe2SLuciano Coelho ieee80211_stop_queues_by_reason(&local->hw, queues, 589cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_FLUSH, 590cca07b00SLuciano Coelho false); 591445ea4e8SJohannes Berg 59277be2c54SEmmanuel Grumbach drv_flush(local, sdata, queues, false); 593445ea4e8SJohannes Berg 59459f48fe2SLuciano Coelho ieee80211_wake_queues_by_reason(&local->hw, queues, 595cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_FLUSH, 596cca07b00SLuciano Coelho false); 59739ecc01dSJohannes Berg } 59839ecc01dSJohannes Berg 59926da23b6SLuciano Coelho void ieee80211_stop_vif_queues(struct ieee80211_local *local, 60026da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata, 60126da23b6SLuciano Coelho enum queue_stop_reason reason) 60226da23b6SLuciano Coelho { 60326da23b6SLuciano Coelho ieee80211_stop_queues_by_reason(&local->hw, 60426da23b6SLuciano Coelho ieee80211_get_vif_queues(local, sdata), 60526da23b6SLuciano Coelho reason, true); 60626da23b6SLuciano Coelho } 60726da23b6SLuciano Coelho 60826da23b6SLuciano Coelho void ieee80211_wake_vif_queues(struct ieee80211_local *local, 60926da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata, 61026da23b6SLuciano Coelho enum queue_stop_reason reason) 61126da23b6SLuciano Coelho { 61226da23b6SLuciano Coelho ieee80211_wake_queues_by_reason(&local->hw, 61326da23b6SLuciano Coelho ieee80211_get_vif_queues(local, sdata), 61426da23b6SLuciano Coelho reason, true); 61526da23b6SLuciano Coelho } 61626da23b6SLuciano Coelho 617c7c71066SJohannes Berg static void __iterate_active_interfaces(struct ieee80211_local *local, 618c7c71066SJohannes Berg u32 iter_flags, 619dabeb344SJohannes Berg void (*iterator)(void *data, u8 *mac, 62032bfd35dSJohannes Berg struct ieee80211_vif *vif), 621dabeb344SJohannes Berg void *data) 622dabeb344SJohannes Berg { 623dabeb344SJohannes Berg struct ieee80211_sub_if_data *sdata; 624dabeb344SJohannes Berg 625e38bad47SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 62651fb61e7SJohannes Berg switch (sdata->vif.type) { 62705c914feSJohannes Berg case NL80211_IFTYPE_MONITOR: 62831eba5bcSFelix Fietkau if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) 62931eba5bcSFelix Fietkau continue; 63031eba5bcSFelix Fietkau break; 63105c914feSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 632dabeb344SJohannes Berg continue; 6332ca27bcfSJohannes Berg default: 634dabeb344SJohannes Berg break; 635dabeb344SJohannes Berg } 6368b2c9824SJohannes Berg if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 6378b2c9824SJohannes Berg !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 6388b2c9824SJohannes Berg continue; 6399607e6b6SJohannes Berg if (ieee80211_sdata_running(sdata)) 64047846c9bSJohannes Berg iterator(data, sdata->vif.addr, 64132bfd35dSJohannes Berg &sdata->vif); 642dabeb344SJohannes Berg } 643e38bad47SJohannes Berg 644c7c71066SJohannes Berg sdata = rcu_dereference_check(local->monitor_sdata, 645c7c71066SJohannes Berg lockdep_is_held(&local->iflist_mtx) || 646c7c71066SJohannes Berg lockdep_rtnl_is_held()); 6478b2c9824SJohannes Berg if (sdata && 6488b2c9824SJohannes Berg (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || 6498b2c9824SJohannes Berg sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 650685fb72bSJohannes Berg iterator(data, sdata->vif.addr, &sdata->vif); 651c7c71066SJohannes Berg } 652685fb72bSJohannes Berg 653c7c71066SJohannes Berg void ieee80211_iterate_active_interfaces( 654c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 655c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 656c7c71066SJohannes Berg struct ieee80211_vif *vif), 657c7c71066SJohannes Berg void *data) 658c7c71066SJohannes Berg { 659c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 660c7c71066SJohannes Berg 661c7c71066SJohannes Berg mutex_lock(&local->iflist_mtx); 662c7c71066SJohannes Berg __iterate_active_interfaces(local, iter_flags, iterator, data); 663c7c71066SJohannes Berg mutex_unlock(&local->iflist_mtx); 664c7c71066SJohannes Berg } 665c7c71066SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); 666c7c71066SJohannes Berg 667c7c71066SJohannes Berg void ieee80211_iterate_active_interfaces_atomic( 668c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 669c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 670c7c71066SJohannes Berg struct ieee80211_vif *vif), 671c7c71066SJohannes Berg void *data) 672c7c71066SJohannes Berg { 673c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 674c7c71066SJohannes Berg 675c7c71066SJohannes Berg rcu_read_lock(); 676c7c71066SJohannes Berg __iterate_active_interfaces(local, iter_flags, iterator, data); 677e38bad47SJohannes Berg rcu_read_unlock(); 678dabeb344SJohannes Berg } 6792f561febSIvo van Doorn EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 68037ffc8daSJohannes Berg 681c7c71066SJohannes Berg void ieee80211_iterate_active_interfaces_rtnl( 682c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 683c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 684c7c71066SJohannes Berg struct ieee80211_vif *vif), 685c7c71066SJohannes Berg void *data) 686c7c71066SJohannes Berg { 687c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 688c7c71066SJohannes Berg 689c7c71066SJohannes Berg ASSERT_RTNL(); 690c7c71066SJohannes Berg 691c7c71066SJohannes Berg __iterate_active_interfaces(local, iter_flags, iterator, data); 692c7c71066SJohannes Berg } 693c7c71066SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); 694c7c71066SJohannes Berg 695ad7e718cSJohannes Berg struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 696ad7e718cSJohannes Berg { 697ad7e718cSJohannes Berg struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 698ad7e718cSJohannes Berg 699ad7e718cSJohannes Berg if (!ieee80211_sdata_running(sdata) || 700ad7e718cSJohannes Berg !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 701ad7e718cSJohannes Berg return NULL; 702ad7e718cSJohannes Berg return &sdata->vif; 703ad7e718cSJohannes Berg } 704ad7e718cSJohannes Berg EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 705ad7e718cSJohannes Berg 70642935ecaSLuis R. Rodriguez /* 70742935ecaSLuis R. Rodriguez * Nothing should have been stuffed into the workqueue during 70842935ecaSLuis R. Rodriguez * the suspend->resume cycle. If this WARN is seen then there 70942935ecaSLuis R. Rodriguez * is a bug with either the driver suspend or something in 71042935ecaSLuis R. Rodriguez * mac80211 stuffing into the workqueue which we haven't yet 71142935ecaSLuis R. Rodriguez * cleared during mac80211's suspend cycle. 71242935ecaSLuis R. Rodriguez */ 71342935ecaSLuis R. Rodriguez static bool ieee80211_can_queue_work(struct ieee80211_local *local) 71442935ecaSLuis R. Rodriguez { 715ceb99fe0SJohannes Berg if (WARN(local->suspended && !local->resuming, 716ceb99fe0SJohannes Berg "queueing ieee80211 work while going to suspend\n")) 71742935ecaSLuis R. Rodriguez return false; 71842935ecaSLuis R. Rodriguez 71942935ecaSLuis R. Rodriguez return true; 72042935ecaSLuis R. Rodriguez } 72142935ecaSLuis R. Rodriguez 72242935ecaSLuis R. Rodriguez void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 72342935ecaSLuis R. Rodriguez { 72442935ecaSLuis R. Rodriguez struct ieee80211_local *local = hw_to_local(hw); 72542935ecaSLuis R. Rodriguez 72642935ecaSLuis R. Rodriguez if (!ieee80211_can_queue_work(local)) 72742935ecaSLuis R. Rodriguez return; 72842935ecaSLuis R. Rodriguez 72942935ecaSLuis R. Rodriguez queue_work(local->workqueue, work); 73042935ecaSLuis R. Rodriguez } 73142935ecaSLuis R. Rodriguez EXPORT_SYMBOL(ieee80211_queue_work); 73242935ecaSLuis R. Rodriguez 73342935ecaSLuis R. Rodriguez void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 73442935ecaSLuis R. Rodriguez struct delayed_work *dwork, 73542935ecaSLuis R. Rodriguez unsigned long delay) 73642935ecaSLuis R. Rodriguez { 73742935ecaSLuis R. Rodriguez struct ieee80211_local *local = hw_to_local(hw); 73842935ecaSLuis R. Rodriguez 73942935ecaSLuis R. Rodriguez if (!ieee80211_can_queue_work(local)) 74042935ecaSLuis R. Rodriguez return; 74142935ecaSLuis R. Rodriguez 74242935ecaSLuis R. Rodriguez queue_delayed_work(local->workqueue, dwork, delay); 74342935ecaSLuis R. Rodriguez } 74442935ecaSLuis R. Rodriguez EXPORT_SYMBOL(ieee80211_queue_delayed_work); 74542935ecaSLuis R. Rodriguez 74635d865afSJohannes Berg u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 747dd76986bSJohannes Berg struct ieee802_11_elems *elems, 748dd76986bSJohannes Berg u64 filter, u32 crc) 749dd76986bSJohannes Berg { 750dd76986bSJohannes Berg size_t left = len; 75135d865afSJohannes Berg const u8 *pos = start; 752dd76986bSJohannes Berg bool calc_crc = filter != 0; 753fcff4f10SPaul Stewart DECLARE_BITMAP(seen_elems, 256); 754b2e506bfSJohannes Berg const u8 *ie; 755dd76986bSJohannes Berg 756fcff4f10SPaul Stewart bitmap_zero(seen_elems, 256); 757dd76986bSJohannes Berg memset(elems, 0, sizeof(*elems)); 758dd76986bSJohannes Berg elems->ie_start = start; 759dd76986bSJohannes Berg elems->total_len = len; 760dd76986bSJohannes Berg 761dd76986bSJohannes Berg while (left >= 2) { 762dd76986bSJohannes Berg u8 id, elen; 763fcff4f10SPaul Stewart bool elem_parse_failed; 764dd76986bSJohannes Berg 765dd76986bSJohannes Berg id = *pos++; 766dd76986bSJohannes Berg elen = *pos++; 767dd76986bSJohannes Berg left -= 2; 768dd76986bSJohannes Berg 769fcff4f10SPaul Stewart if (elen > left) { 770fcff4f10SPaul Stewart elems->parse_error = true; 771dd76986bSJohannes Berg break; 772fcff4f10SPaul Stewart } 773fcff4f10SPaul Stewart 7749690fb16SJohannes Berg switch (id) { 7759690fb16SJohannes Berg case WLAN_EID_SSID: 7769690fb16SJohannes Berg case WLAN_EID_SUPP_RATES: 7779690fb16SJohannes Berg case WLAN_EID_FH_PARAMS: 7789690fb16SJohannes Berg case WLAN_EID_DS_PARAMS: 7799690fb16SJohannes Berg case WLAN_EID_CF_PARAMS: 7809690fb16SJohannes Berg case WLAN_EID_TIM: 7819690fb16SJohannes Berg case WLAN_EID_IBSS_PARAMS: 7829690fb16SJohannes Berg case WLAN_EID_CHALLENGE: 7839690fb16SJohannes Berg case WLAN_EID_RSN: 7849690fb16SJohannes Berg case WLAN_EID_ERP_INFO: 7859690fb16SJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 7869690fb16SJohannes Berg case WLAN_EID_HT_CAPABILITY: 7879690fb16SJohannes Berg case WLAN_EID_HT_OPERATION: 7889690fb16SJohannes Berg case WLAN_EID_VHT_CAPABILITY: 7899690fb16SJohannes Berg case WLAN_EID_VHT_OPERATION: 7909690fb16SJohannes Berg case WLAN_EID_MESH_ID: 7919690fb16SJohannes Berg case WLAN_EID_MESH_CONFIG: 7929690fb16SJohannes Berg case WLAN_EID_PEER_MGMT: 7939690fb16SJohannes Berg case WLAN_EID_PREQ: 7949690fb16SJohannes Berg case WLAN_EID_PREP: 7959690fb16SJohannes Berg case WLAN_EID_PERR: 7969690fb16SJohannes Berg case WLAN_EID_RANN: 7979690fb16SJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 7989690fb16SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 7999690fb16SJohannes Berg case WLAN_EID_COUNTRY: 8009690fb16SJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 8019690fb16SJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 80285220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 803b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 8048f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 805b2e506bfSJohannes Berg /* 806b2e506bfSJohannes Berg * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible 807b2e506bfSJohannes Berg * that if the content gets bigger it might be needed more than once 808b2e506bfSJohannes Berg */ 8099690fb16SJohannes Berg if (test_bit(id, seen_elems)) { 810fcff4f10SPaul Stewart elems->parse_error = true; 811fcff4f10SPaul Stewart left -= elen; 812fcff4f10SPaul Stewart pos += elen; 813fcff4f10SPaul Stewart continue; 814fcff4f10SPaul Stewart } 8159690fb16SJohannes Berg break; 8169690fb16SJohannes Berg } 817dd76986bSJohannes Berg 818dd76986bSJohannes Berg if (calc_crc && id < 64 && (filter & (1ULL << id))) 819dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 820dd76986bSJohannes Berg 821fcff4f10SPaul Stewart elem_parse_failed = false; 822fcff4f10SPaul Stewart 823dd76986bSJohannes Berg switch (id) { 824dd76986bSJohannes Berg case WLAN_EID_SSID: 825dd76986bSJohannes Berg elems->ssid = pos; 826dd76986bSJohannes Berg elems->ssid_len = elen; 827dd76986bSJohannes Berg break; 828dd76986bSJohannes Berg case WLAN_EID_SUPP_RATES: 829dd76986bSJohannes Berg elems->supp_rates = pos; 830dd76986bSJohannes Berg elems->supp_rates_len = elen; 831dd76986bSJohannes Berg break; 832dd76986bSJohannes Berg case WLAN_EID_DS_PARAMS: 8331cd8e88eSJohannes Berg if (elen >= 1) 834dd76986bSJohannes Berg elems->ds_params = pos; 8351cd8e88eSJohannes Berg else 8361cd8e88eSJohannes Berg elem_parse_failed = true; 837dd76986bSJohannes Berg break; 838dd76986bSJohannes Berg case WLAN_EID_TIM: 839dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_tim_ie)) { 840dd76986bSJohannes Berg elems->tim = (void *)pos; 841dd76986bSJohannes Berg elems->tim_len = elen; 842fcff4f10SPaul Stewart } else 843fcff4f10SPaul Stewart elem_parse_failed = true; 844dd76986bSJohannes Berg break; 845dd76986bSJohannes Berg case WLAN_EID_CHALLENGE: 846dd76986bSJohannes Berg elems->challenge = pos; 847dd76986bSJohannes Berg elems->challenge_len = elen; 848dd76986bSJohannes Berg break; 849dd76986bSJohannes Berg case WLAN_EID_VENDOR_SPECIFIC: 850dd76986bSJohannes Berg if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && 851dd76986bSJohannes Berg pos[2] == 0xf2) { 852dd76986bSJohannes Berg /* Microsoft OUI (00:50:F2) */ 853dd76986bSJohannes Berg 854dd76986bSJohannes Berg if (calc_crc) 855dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 856dd76986bSJohannes Berg 857441a33baSJohannes Berg if (elen >= 5 && pos[3] == 2) { 858dd76986bSJohannes Berg /* OUI Type 2 - WMM IE */ 859dd76986bSJohannes Berg if (pos[4] == 0) { 860dd76986bSJohannes Berg elems->wmm_info = pos; 861dd76986bSJohannes Berg elems->wmm_info_len = elen; 862dd76986bSJohannes Berg } else if (pos[4] == 1) { 863dd76986bSJohannes Berg elems->wmm_param = pos; 864dd76986bSJohannes Berg elems->wmm_param_len = elen; 865dd76986bSJohannes Berg } 866dd76986bSJohannes Berg } 867dd76986bSJohannes Berg } 868dd76986bSJohannes Berg break; 869dd76986bSJohannes Berg case WLAN_EID_RSN: 870dd76986bSJohannes Berg elems->rsn = pos; 871dd76986bSJohannes Berg elems->rsn_len = elen; 872dd76986bSJohannes Berg break; 873dd76986bSJohannes Berg case WLAN_EID_ERP_INFO: 8741946bed9SJohannes Berg if (elen >= 1) 875dd76986bSJohannes Berg elems->erp_info = pos; 8761946bed9SJohannes Berg else 8771946bed9SJohannes Berg elem_parse_failed = true; 878dd76986bSJohannes Berg break; 879dd76986bSJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 880dd76986bSJohannes Berg elems->ext_supp_rates = pos; 881dd76986bSJohannes Berg elems->ext_supp_rates_len = elen; 882dd76986bSJohannes Berg break; 883dd76986bSJohannes Berg case WLAN_EID_HT_CAPABILITY: 884dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_ht_cap)) 885dd76986bSJohannes Berg elems->ht_cap_elem = (void *)pos; 886fcff4f10SPaul Stewart else 887fcff4f10SPaul Stewart elem_parse_failed = true; 888dd76986bSJohannes Berg break; 889074d46d1SJohannes Berg case WLAN_EID_HT_OPERATION: 890074d46d1SJohannes Berg if (elen >= sizeof(struct ieee80211_ht_operation)) 891074d46d1SJohannes Berg elems->ht_operation = (void *)pos; 892fcff4f10SPaul Stewart else 893fcff4f10SPaul Stewart elem_parse_failed = true; 894dd76986bSJohannes Berg break; 895818255eaSMahesh Palivela case WLAN_EID_VHT_CAPABILITY: 896818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_cap)) 897818255eaSMahesh Palivela elems->vht_cap_elem = (void *)pos; 898818255eaSMahesh Palivela else 899818255eaSMahesh Palivela elem_parse_failed = true; 900818255eaSMahesh Palivela break; 901818255eaSMahesh Palivela case WLAN_EID_VHT_OPERATION: 902818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_operation)) 903818255eaSMahesh Palivela elems->vht_operation = (void *)pos; 904818255eaSMahesh Palivela else 905818255eaSMahesh Palivela elem_parse_failed = true; 906818255eaSMahesh Palivela break; 907bee7f586SJohannes Berg case WLAN_EID_OPMODE_NOTIF: 908bee7f586SJohannes Berg if (elen > 0) 909bee7f586SJohannes Berg elems->opmode_notif = pos; 910bee7f586SJohannes Berg else 911bee7f586SJohannes Berg elem_parse_failed = true; 912bee7f586SJohannes Berg break; 913dd76986bSJohannes Berg case WLAN_EID_MESH_ID: 914dd76986bSJohannes Berg elems->mesh_id = pos; 915dd76986bSJohannes Berg elems->mesh_id_len = elen; 916dd76986bSJohannes Berg break; 917dd76986bSJohannes Berg case WLAN_EID_MESH_CONFIG: 918dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_meshconf_ie)) 919dd76986bSJohannes Berg elems->mesh_config = (void *)pos; 920fcff4f10SPaul Stewart else 921fcff4f10SPaul Stewart elem_parse_failed = true; 922dd76986bSJohannes Berg break; 923dd76986bSJohannes Berg case WLAN_EID_PEER_MGMT: 924dd76986bSJohannes Berg elems->peering = pos; 925dd76986bSJohannes Berg elems->peering_len = elen; 926dd76986bSJohannes Berg break; 9273f52b7e3SMarco Porsch case WLAN_EID_MESH_AWAKE_WINDOW: 9283f52b7e3SMarco Porsch if (elen >= 2) 9293f52b7e3SMarco Porsch elems->awake_window = (void *)pos; 9303f52b7e3SMarco Porsch break; 931dd76986bSJohannes Berg case WLAN_EID_PREQ: 932dd76986bSJohannes Berg elems->preq = pos; 933dd76986bSJohannes Berg elems->preq_len = elen; 934dd76986bSJohannes Berg break; 935dd76986bSJohannes Berg case WLAN_EID_PREP: 936dd76986bSJohannes Berg elems->prep = pos; 937dd76986bSJohannes Berg elems->prep_len = elen; 938dd76986bSJohannes Berg break; 939dd76986bSJohannes Berg case WLAN_EID_PERR: 940dd76986bSJohannes Berg elems->perr = pos; 941dd76986bSJohannes Berg elems->perr_len = elen; 942dd76986bSJohannes Berg break; 943dd76986bSJohannes Berg case WLAN_EID_RANN: 944dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_rann_ie)) 945dd76986bSJohannes Berg elems->rann = (void *)pos; 946fcff4f10SPaul Stewart else 947fcff4f10SPaul Stewart elem_parse_failed = true; 948dd76986bSJohannes Berg break; 949dd76986bSJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 9505bc1420bSJohannes Berg if (elen != sizeof(struct ieee80211_channel_sw_ie)) { 9515bc1420bSJohannes Berg elem_parse_failed = true; 9525bc1420bSJohannes Berg break; 9535bc1420bSJohannes Berg } 9545bc1420bSJohannes Berg elems->ch_switch_ie = (void *)pos; 955dd76986bSJohannes Berg break; 956b4f286a1SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 957b4f286a1SJohannes Berg if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { 958b4f286a1SJohannes Berg elem_parse_failed = true; 959b4f286a1SJohannes Berg break; 960b4f286a1SJohannes Berg } 961b4f286a1SJohannes Berg elems->ext_chansw_ie = (void *)pos; 962b4f286a1SJohannes Berg break; 96385220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 96485220d71SJohannes Berg if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { 96585220d71SJohannes Berg elem_parse_failed = true; 96685220d71SJohannes Berg break; 96785220d71SJohannes Berg } 96885220d71SJohannes Berg elems->sec_chan_offs = (void *)pos; 96985220d71SJohannes Berg break; 9708f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 9718f2535b9SChun-Yeow Yeoh if (elen != 9728f2535b9SChun-Yeow Yeoh sizeof(*elems->mesh_chansw_params_ie)) { 9738f2535b9SChun-Yeow Yeoh elem_parse_failed = true; 9748f2535b9SChun-Yeow Yeoh break; 9758f2535b9SChun-Yeow Yeoh } 9768f2535b9SChun-Yeow Yeoh elems->mesh_chansw_params_ie = (void *)pos; 9778f2535b9SChun-Yeow Yeoh break; 978b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 979b2e506bfSJohannes Berg if (!action || 980b2e506bfSJohannes Berg elen != sizeof(*elems->wide_bw_chansw_ie)) { 981b2e506bfSJohannes Berg elem_parse_failed = true; 982b2e506bfSJohannes Berg break; 983b2e506bfSJohannes Berg } 984b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = (void *)pos; 985b2e506bfSJohannes Berg break; 986b2e506bfSJohannes Berg case WLAN_EID_CHANNEL_SWITCH_WRAPPER: 987b2e506bfSJohannes Berg if (action) { 988b2e506bfSJohannes Berg elem_parse_failed = true; 989b2e506bfSJohannes Berg break; 990b2e506bfSJohannes Berg } 991b2e506bfSJohannes Berg /* 992b2e506bfSJohannes Berg * This is a bit tricky, but as we only care about 993b2e506bfSJohannes Berg * the wide bandwidth channel switch element, so 994b2e506bfSJohannes Berg * just parse it out manually. 995b2e506bfSJohannes Berg */ 996b2e506bfSJohannes Berg ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, 997b2e506bfSJohannes Berg pos, elen); 998b2e506bfSJohannes Berg if (ie) { 999b2e506bfSJohannes Berg if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) 1000b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = 1001b2e506bfSJohannes Berg (void *)(ie + 2); 1002b2e506bfSJohannes Berg else 1003b2e506bfSJohannes Berg elem_parse_failed = true; 1004b2e506bfSJohannes Berg } 1005b2e506bfSJohannes Berg break; 1006dd76986bSJohannes Berg case WLAN_EID_COUNTRY: 1007dd76986bSJohannes Berg elems->country_elem = pos; 1008dd76986bSJohannes Berg elems->country_elem_len = elen; 1009dd76986bSJohannes Berg break; 1010dd76986bSJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 1011761a48d2SJohannes Berg if (elen != 1) { 1012761a48d2SJohannes Berg elem_parse_failed = true; 1013761a48d2SJohannes Berg break; 1014761a48d2SJohannes Berg } 1015dd76986bSJohannes Berg elems->pwr_constr_elem = pos; 1016dd76986bSJohannes Berg break; 1017dd76986bSJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 101879ba1d89SJohannes Berg if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) 101979ba1d89SJohannes Berg elems->timeout_int = (void *)pos; 102079ba1d89SJohannes Berg else 102179ba1d89SJohannes Berg elem_parse_failed = true; 1022dd76986bSJohannes Berg break; 1023dd76986bSJohannes Berg default: 1024dd76986bSJohannes Berg break; 1025dd76986bSJohannes Berg } 1026dd76986bSJohannes Berg 1027fcff4f10SPaul Stewart if (elem_parse_failed) 1028fcff4f10SPaul Stewart elems->parse_error = true; 1029fcff4f10SPaul Stewart else 10305df45690SJohannes Berg __set_bit(id, seen_elems); 1031fcff4f10SPaul Stewart 1032dd76986bSJohannes Berg left -= elen; 1033dd76986bSJohannes Berg pos += elen; 1034dd76986bSJohannes Berg } 1035dd76986bSJohannes Berg 1036fcff4f10SPaul Stewart if (left != 0) 1037fcff4f10SPaul Stewart elems->parse_error = true; 1038fcff4f10SPaul Stewart 1039dd76986bSJohannes Berg return crc; 1040dd76986bSJohannes Berg } 1041dd76986bSJohannes Berg 10423abead59SJohannes Berg void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 10433abead59SJohannes Berg bool bss_notify) 10445825fe10SJohannes Berg { 10455825fe10SJohannes Berg struct ieee80211_local *local = sdata->local; 10465825fe10SJohannes Berg struct ieee80211_tx_queue_params qparam; 104755de908aSJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 104854bcbc69SJohannes Berg int ac; 1049a8ce8544SStanislaw Gruszka bool use_11b, enable_qos; 1050aa837e1dSJohannes Berg int aCWmin, aCWmax; 10515825fe10SJohannes Berg 10525825fe10SJohannes Berg if (!local->ops->conf_tx) 10535825fe10SJohannes Berg return; 10545825fe10SJohannes Berg 105554bcbc69SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 105654bcbc69SJohannes Berg return; 105754bcbc69SJohannes Berg 10585825fe10SJohannes Berg memset(&qparam, 0, sizeof(qparam)); 10595825fe10SJohannes Berg 106055de908aSJohannes Berg rcu_read_lock(); 106155de908aSJohannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 106255de908aSJohannes Berg use_11b = (chanctx_conf && 10634bf88530SJohannes Berg chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && 1064aa837e1dSJohannes Berg !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); 106555de908aSJohannes Berg rcu_read_unlock(); 10665825fe10SJohannes Berg 1067a8ce8544SStanislaw Gruszka /* 1068a8ce8544SStanislaw Gruszka * By default disable QoS in STA mode for old access points, which do 1069a8ce8544SStanislaw Gruszka * not support 802.11e. New APs will provide proper queue parameters, 1070a8ce8544SStanislaw Gruszka * that we will configure later. 1071a8ce8544SStanislaw Gruszka */ 1072a8ce8544SStanislaw Gruszka enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); 1073a8ce8544SStanislaw Gruszka 1074aa837e1dSJohannes Berg /* Set defaults according to 802.11-2007 Table 7-37 */ 1075aa837e1dSJohannes Berg aCWmax = 1023; 1076aa837e1dSJohannes Berg if (use_11b) 1077aa837e1dSJohannes Berg aCWmin = 31; 10785825fe10SJohannes Berg else 1079aa837e1dSJohannes Berg aCWmin = 15; 10805825fe10SJohannes Berg 10811f4ffde8SFred Zhou /* Confiure old 802.11b/g medium access rules. */ 10821f4ffde8SFred Zhou qparam.cw_max = aCWmax; 10831f4ffde8SFred Zhou qparam.cw_min = aCWmin; 10841f4ffde8SFred Zhou qparam.txop = 0; 10851f4ffde8SFred Zhou qparam.aifs = 2; 10861f4ffde8SFred Zhou 10871f4ffde8SFred Zhou for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 10881f4ffde8SFred Zhou /* Update if QoS is enabled. */ 1089a8ce8544SStanislaw Gruszka if (enable_qos) { 109054bcbc69SJohannes Berg switch (ac) { 10911d98fb12SJohannes Berg case IEEE80211_AC_BK: 10927ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 10937ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 10945825fe10SJohannes Berg qparam.txop = 0; 1095aa837e1dSJohannes Berg qparam.aifs = 7; 1096aa837e1dSJohannes Berg break; 1097a8ce8544SStanislaw Gruszka /* never happens but let's not leave undefined */ 1098a8ce8544SStanislaw Gruszka default: 10991d98fb12SJohannes Berg case IEEE80211_AC_BE: 11007ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 11017ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 1102aa837e1dSJohannes Berg qparam.txop = 0; 1103aa837e1dSJohannes Berg qparam.aifs = 3; 1104aa837e1dSJohannes Berg break; 11051d98fb12SJohannes Berg case IEEE80211_AC_VI: 1106aa837e1dSJohannes Berg qparam.cw_max = aCWmin; 1107aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 2 - 1; 1108aa837e1dSJohannes Berg if (use_11b) 1109aa837e1dSJohannes Berg qparam.txop = 6016/32; 1110aa837e1dSJohannes Berg else 1111aa837e1dSJohannes Berg qparam.txop = 3008/32; 1112aa837e1dSJohannes Berg qparam.aifs = 2; 1113aa837e1dSJohannes Berg break; 11141d98fb12SJohannes Berg case IEEE80211_AC_VO: 1115aa837e1dSJohannes Berg qparam.cw_max = (aCWmin + 1) / 2 - 1; 1116aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 4 - 1; 1117aa837e1dSJohannes Berg if (use_11b) 1118aa837e1dSJohannes Berg qparam.txop = 3264/32; 1119aa837e1dSJohannes Berg else 1120aa837e1dSJohannes Berg qparam.txop = 1504/32; 1121aa837e1dSJohannes Berg qparam.aifs = 2; 1122aa837e1dSJohannes Berg break; 1123aa837e1dSJohannes Berg } 1124a8ce8544SStanislaw Gruszka } 11255825fe10SJohannes Berg 1126ab13315aSKalle Valo qparam.uapsd = false; 1127ab13315aSKalle Valo 112854bcbc69SJohannes Berg sdata->tx_conf[ac] = qparam; 112954bcbc69SJohannes Berg drv_conf_tx(local, sdata, ac, &qparam); 1130aa837e1dSJohannes Berg } 1131e1b3ec1aSStanislaw Gruszka 1132f142c6b9SJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1133f142c6b9SJohannes Berg sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { 1134a8ce8544SStanislaw Gruszka sdata->vif.bss_conf.qos = enable_qos; 11353abead59SJohannes Berg if (bss_notify) 11363abead59SJohannes Berg ieee80211_bss_info_change_notify(sdata, 11373abead59SJohannes Berg BSS_CHANGED_QOS); 11385825fe10SJohannes Berg } 1139d9734979SSujith } 1140e50db65cSJohannes Berg 114146900298SJohannes Berg void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1142700e8ea6SJouni Malinen u16 transaction, u16 auth_alg, u16 status, 11434a3cb702SJohannes Berg const u8 *extra, size_t extra_len, const u8 *da, 11441672c0e3SJohannes Berg const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 11451672c0e3SJohannes Berg u32 tx_flags) 114646900298SJohannes Berg { 114746900298SJohannes Berg struct ieee80211_local *local = sdata->local; 114846900298SJohannes Berg struct sk_buff *skb; 114946900298SJohannes Berg struct ieee80211_mgmt *mgmt; 1150fffd0934SJohannes Berg int err; 115146900298SJohannes Berg 115215e230abSFred Zhou /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 115315e230abSFred Zhou skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); 1154d15b8459SJoe Perches if (!skb) 115546900298SJohannes Berg return; 1156d15b8459SJoe Perches 115746900298SJohannes Berg skb_reserve(skb, local->hw.extra_tx_headroom); 115846900298SJohannes Berg 115946900298SJohannes Berg mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); 116046900298SJohannes Berg memset(mgmt, 0, 24 + 6); 116146900298SJohannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 116246900298SJohannes Berg IEEE80211_STYPE_AUTH); 1163efa6a09dSAntonio Quartulli memcpy(mgmt->da, da, ETH_ALEN); 116447846c9bSJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 116546900298SJohannes Berg memcpy(mgmt->bssid, bssid, ETH_ALEN); 116646900298SJohannes Berg mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 116746900298SJohannes Berg mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1168700e8ea6SJouni Malinen mgmt->u.auth.status_code = cpu_to_le16(status); 116946900298SJohannes Berg if (extra) 117046900298SJohannes Berg memcpy(skb_put(skb, extra_len), extra, extra_len); 117146900298SJohannes Berg 1172fffd0934SJohannes Berg if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1173fffd0934SJohannes Berg mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1174fffd0934SJohannes Berg err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1175fffd0934SJohannes Berg WARN_ON(err); 1176fffd0934SJohannes Berg } 1177fffd0934SJohannes Berg 11781672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 11791672c0e3SJohannes Berg tx_flags; 118062ae67beSJohannes Berg ieee80211_tx_skb(sdata, skb); 118146900298SJohannes Berg } 118246900298SJohannes Berg 11836ae16775SAntonio Quartulli void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 11846ae16775SAntonio Quartulli const u8 *bssid, u16 stype, u16 reason, 11856ae16775SAntonio Quartulli bool send_frame, u8 *frame_buf) 11866ae16775SAntonio Quartulli { 11876ae16775SAntonio Quartulli struct ieee80211_local *local = sdata->local; 11886ae16775SAntonio Quartulli struct sk_buff *skb; 11896ae16775SAntonio Quartulli struct ieee80211_mgmt *mgmt = (void *)frame_buf; 11906ae16775SAntonio Quartulli 11916ae16775SAntonio Quartulli /* build frame */ 11926ae16775SAntonio Quartulli mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 11936ae16775SAntonio Quartulli mgmt->duration = 0; /* initialize only */ 11946ae16775SAntonio Quartulli mgmt->seq_ctrl = 0; /* initialize only */ 11956ae16775SAntonio Quartulli memcpy(mgmt->da, bssid, ETH_ALEN); 11966ae16775SAntonio Quartulli memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 11976ae16775SAntonio Quartulli memcpy(mgmt->bssid, bssid, ETH_ALEN); 11986ae16775SAntonio Quartulli /* u.deauth.reason_code == u.disassoc.reason_code */ 11996ae16775SAntonio Quartulli mgmt->u.deauth.reason_code = cpu_to_le16(reason); 12006ae16775SAntonio Quartulli 12016ae16775SAntonio Quartulli if (send_frame) { 12026ae16775SAntonio Quartulli skb = dev_alloc_skb(local->hw.extra_tx_headroom + 12036ae16775SAntonio Quartulli IEEE80211_DEAUTH_FRAME_LEN); 12046ae16775SAntonio Quartulli if (!skb) 12056ae16775SAntonio Quartulli return; 12066ae16775SAntonio Quartulli 12076ae16775SAntonio Quartulli skb_reserve(skb, local->hw.extra_tx_headroom); 12086ae16775SAntonio Quartulli 12096ae16775SAntonio Quartulli /* copy in frame */ 12106ae16775SAntonio Quartulli memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), 12116ae16775SAntonio Quartulli mgmt, IEEE80211_DEAUTH_FRAME_LEN); 12126ae16775SAntonio Quartulli 12136ae16775SAntonio Quartulli if (sdata->vif.type != NL80211_IFTYPE_STATION || 12146ae16775SAntonio Quartulli !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 12156ae16775SAntonio Quartulli IEEE80211_SKB_CB(skb)->flags |= 12166ae16775SAntonio Quartulli IEEE80211_TX_INTFL_DONT_ENCRYPT; 12176ae16775SAntonio Quartulli 12186ae16775SAntonio Quartulli ieee80211_tx_skb(sdata, skb); 12196ae16775SAntonio Quartulli } 12206ae16775SAntonio Quartulli } 12216ae16775SAntonio Quartulli 1222c56ef672SDavid Spinadel static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, 1223c56ef672SDavid Spinadel u8 *buffer, size_t buffer_len, 1224c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 1225c56ef672SDavid Spinadel enum ieee80211_band band, 1226c56ef672SDavid Spinadel u32 rate_mask, 1227c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef, 1228c56ef672SDavid Spinadel size_t *offset) 1229de95a54bSJohannes Berg { 1230de95a54bSJohannes Berg struct ieee80211_supported_band *sband; 1231c604b9f2SJohannes Berg u8 *pos = buffer, *end = buffer + buffer_len; 1232c56ef672SDavid Spinadel size_t noffset; 12338e664fb3SJohannes Berg int supp_rates_len, i; 12348dcb2003SJouni Malinen u8 rates[32]; 12358dcb2003SJouni Malinen int num_rates; 12368dcb2003SJouni Malinen int ext_rates_len; 12372103dec1SSimon Wunderlich int shift; 12382103dec1SSimon Wunderlich u32 rate_flags; 1239de95a54bSJohannes Berg 1240c56ef672SDavid Spinadel *offset = 0; 1241c56ef672SDavid Spinadel 12424d36ec58SJohannes Berg sband = local->hw.wiphy->bands[band]; 1243d811b3d5SArik Nemtsov if (WARN_ON_ONCE(!sband)) 1244d811b3d5SArik Nemtsov return 0; 1245de95a54bSJohannes Berg 12462103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(chandef); 12472103dec1SSimon Wunderlich shift = ieee80211_chandef_get_shift(chandef); 12482103dec1SSimon Wunderlich 12498dcb2003SJouni Malinen num_rates = 0; 12508dcb2003SJouni Malinen for (i = 0; i < sband->n_bitrates; i++) { 12518dcb2003SJouni Malinen if ((BIT(i) & rate_mask) == 0) 12528dcb2003SJouni Malinen continue; /* skip rate */ 12532103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 12542103dec1SSimon Wunderlich continue; 12552103dec1SSimon Wunderlich 12562103dec1SSimon Wunderlich rates[num_rates++] = 12572103dec1SSimon Wunderlich (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 12582103dec1SSimon Wunderlich (1 << shift) * 5); 12598dcb2003SJouni Malinen } 12608dcb2003SJouni Malinen 12618dcb2003SJouni Malinen supp_rates_len = min_t(int, num_rates, 8); 12628e664fb3SJohannes Berg 1263c604b9f2SJohannes Berg if (end - pos < 2 + supp_rates_len) 1264c604b9f2SJohannes Berg goto out_err; 1265de95a54bSJohannes Berg *pos++ = WLAN_EID_SUPP_RATES; 12668e664fb3SJohannes Berg *pos++ = supp_rates_len; 12678dcb2003SJouni Malinen memcpy(pos, rates, supp_rates_len); 12688dcb2003SJouni Malinen pos += supp_rates_len; 1269de95a54bSJohannes Berg 12708e664fb3SJohannes Berg /* insert "request information" if in custom IEs */ 12718e664fb3SJohannes Berg if (ie && ie_len) { 12728e664fb3SJohannes Berg static const u8 before_extrates[] = { 12738e664fb3SJohannes Berg WLAN_EID_SSID, 12748e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 12758e664fb3SJohannes Berg WLAN_EID_REQUEST, 12768e664fb3SJohannes Berg }; 12778e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 12788e664fb3SJohannes Berg before_extrates, 12798e664fb3SJohannes Berg ARRAY_SIZE(before_extrates), 1280c56ef672SDavid Spinadel *offset); 1281c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1282c604b9f2SJohannes Berg goto out_err; 1283c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1284c56ef672SDavid Spinadel pos += noffset - *offset; 1285c56ef672SDavid Spinadel *offset = noffset; 12868e664fb3SJohannes Berg } 12878e664fb3SJohannes Berg 12888dcb2003SJouni Malinen ext_rates_len = num_rates - supp_rates_len; 12898dcb2003SJouni Malinen if (ext_rates_len > 0) { 1290c604b9f2SJohannes Berg if (end - pos < 2 + ext_rates_len) 1291c604b9f2SJohannes Berg goto out_err; 1292de95a54bSJohannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 12938dcb2003SJouni Malinen *pos++ = ext_rates_len; 12948dcb2003SJouni Malinen memcpy(pos, rates + supp_rates_len, ext_rates_len); 12958dcb2003SJouni Malinen pos += ext_rates_len; 12968e664fb3SJohannes Berg } 12978e664fb3SJohannes Berg 12982103dec1SSimon Wunderlich if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { 1299c604b9f2SJohannes Berg if (end - pos < 3) 1300c604b9f2SJohannes Berg goto out_err; 1301651b5225SJouni Malinen *pos++ = WLAN_EID_DS_PARAMS; 1302651b5225SJouni Malinen *pos++ = 1; 13032103dec1SSimon Wunderlich *pos++ = ieee80211_frequency_to_channel( 13042103dec1SSimon Wunderlich chandef->chan->center_freq); 1305651b5225SJouni Malinen } 1306651b5225SJouni Malinen 13078e664fb3SJohannes Berg /* insert custom IEs that go before HT */ 13088e664fb3SJohannes Berg if (ie && ie_len) { 13098e664fb3SJohannes Berg static const u8 before_ht[] = { 13108e664fb3SJohannes Berg WLAN_EID_SSID, 13118e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 13128e664fb3SJohannes Berg WLAN_EID_REQUEST, 13138e664fb3SJohannes Berg WLAN_EID_EXT_SUPP_RATES, 13148e664fb3SJohannes Berg WLAN_EID_DS_PARAMS, 13158e664fb3SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 13168e664fb3SJohannes Berg }; 13178e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 13188e664fb3SJohannes Berg before_ht, ARRAY_SIZE(before_ht), 1319c56ef672SDavid Spinadel *offset); 1320c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1321c604b9f2SJohannes Berg goto out_err; 1322c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1323c56ef672SDavid Spinadel pos += noffset - *offset; 1324c56ef672SDavid Spinadel *offset = noffset; 1325de95a54bSJohannes Berg } 1326de95a54bSJohannes Berg 1327c604b9f2SJohannes Berg if (sband->ht_cap.ht_supported) { 1328c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) 1329c604b9f2SJohannes Berg goto out_err; 1330ef96a842SBen Greear pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1331ef96a842SBen Greear sband->ht_cap.cap); 1332c604b9f2SJohannes Berg } 13335ef2d41aSJohannes Berg 1334de95a54bSJohannes Berg /* 1335de95a54bSJohannes Berg * If adding more here, adjust code in main.c 1336de95a54bSJohannes Berg * that calculates local->scan_ies_len. 1337de95a54bSJohannes Berg */ 1338de95a54bSJohannes Berg 13394d952300SJohannes Berg /* insert custom IEs that go before VHT */ 13408e664fb3SJohannes Berg if (ie && ie_len) { 13414d952300SJohannes Berg static const u8 before_vht[] = { 13424d952300SJohannes Berg WLAN_EID_SSID, 13434d952300SJohannes Berg WLAN_EID_SUPP_RATES, 13444d952300SJohannes Berg WLAN_EID_REQUEST, 13454d952300SJohannes Berg WLAN_EID_EXT_SUPP_RATES, 13464d952300SJohannes Berg WLAN_EID_DS_PARAMS, 13474d952300SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 13484d952300SJohannes Berg WLAN_EID_HT_CAPABILITY, 13494d952300SJohannes Berg WLAN_EID_BSS_COEX_2040, 13504d952300SJohannes Berg WLAN_EID_EXT_CAPABILITY, 13514d952300SJohannes Berg WLAN_EID_SSID_LIST, 13524d952300SJohannes Berg WLAN_EID_CHANNEL_USAGE, 13534d952300SJohannes Berg WLAN_EID_INTERWORKING, 13544d952300SJohannes Berg /* mesh ID can't happen here */ 13554d952300SJohannes Berg /* 60 GHz can't happen here right now */ 13564d952300SJohannes Berg }; 13574d952300SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 13584d952300SJohannes Berg before_vht, ARRAY_SIZE(before_vht), 1359c56ef672SDavid Spinadel *offset); 1360c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1361c604b9f2SJohannes Berg goto out_err; 1362c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1363c56ef672SDavid Spinadel pos += noffset - *offset; 1364c56ef672SDavid Spinadel *offset = noffset; 1365de95a54bSJohannes Berg } 1366de95a54bSJohannes Berg 1367c604b9f2SJohannes Berg if (sband->vht_cap.vht_supported) { 1368c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) 1369c604b9f2SJohannes Berg goto out_err; 1370ba0afa2fSMahesh Palivela pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1371ba0afa2fSMahesh Palivela sband->vht_cap.cap); 1372c604b9f2SJohannes Berg } 1373ba0afa2fSMahesh Palivela 1374de95a54bSJohannes Berg return pos - buffer; 1375c604b9f2SJohannes Berg out_err: 1376c604b9f2SJohannes Berg WARN_ONCE(1, "not enough space for preq IEs\n"); 1377c604b9f2SJohannes Berg return pos - buffer; 1378de95a54bSJohannes Berg } 1379de95a54bSJohannes Berg 1380c56ef672SDavid Spinadel int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1381c56ef672SDavid Spinadel size_t buffer_len, 1382c56ef672SDavid Spinadel struct ieee80211_scan_ies *ie_desc, 1383c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 1384c56ef672SDavid Spinadel u8 bands_used, u32 *rate_masks, 1385c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef) 1386c56ef672SDavid Spinadel { 1387c56ef672SDavid Spinadel size_t pos = 0, old_pos = 0, custom_ie_offset = 0; 1388c56ef672SDavid Spinadel int i; 1389c56ef672SDavid Spinadel 1390c56ef672SDavid Spinadel memset(ie_desc, 0, sizeof(*ie_desc)); 1391c56ef672SDavid Spinadel 1392c56ef672SDavid Spinadel for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 1393c56ef672SDavid Spinadel if (bands_used & BIT(i)) { 1394c56ef672SDavid Spinadel pos += ieee80211_build_preq_ies_band(local, 1395c56ef672SDavid Spinadel buffer + pos, 1396c56ef672SDavid Spinadel buffer_len - pos, 1397c56ef672SDavid Spinadel ie, ie_len, i, 1398c56ef672SDavid Spinadel rate_masks[i], 1399c56ef672SDavid Spinadel chandef, 1400c56ef672SDavid Spinadel &custom_ie_offset); 1401c56ef672SDavid Spinadel ie_desc->ies[i] = buffer + old_pos; 1402c56ef672SDavid Spinadel ie_desc->len[i] = pos - old_pos; 1403c56ef672SDavid Spinadel old_pos = pos; 1404c56ef672SDavid Spinadel } 1405c56ef672SDavid Spinadel } 1406c56ef672SDavid Spinadel 1407c56ef672SDavid Spinadel /* add any remaining custom IEs */ 1408c56ef672SDavid Spinadel if (ie && ie_len) { 1409c56ef672SDavid Spinadel if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, 1410c56ef672SDavid Spinadel "not enough space for preq custom IEs\n")) 1411c56ef672SDavid Spinadel return pos; 1412c56ef672SDavid Spinadel memcpy(buffer + pos, ie + custom_ie_offset, 1413c56ef672SDavid Spinadel ie_len - custom_ie_offset); 1414c56ef672SDavid Spinadel ie_desc->common_ies = buffer + pos; 1415c56ef672SDavid Spinadel ie_desc->common_ie_len = ie_len - custom_ie_offset; 1416c56ef672SDavid Spinadel pos += ie_len - custom_ie_offset; 1417c56ef672SDavid Spinadel } 1418c56ef672SDavid Spinadel 1419c56ef672SDavid Spinadel return pos; 1420c56ef672SDavid Spinadel }; 1421c56ef672SDavid Spinadel 1422a619a4c0SJuuso Oikarinen struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 142385a237feSJohannes Berg u8 *dst, u32 ratemask, 14246b77863bSJohannes Berg struct ieee80211_channel *chan, 1425de95a54bSJohannes Berg const u8 *ssid, size_t ssid_len, 1426a806c558SPaul Stewart const u8 *ie, size_t ie_len, 1427a806c558SPaul Stewart bool directed) 142846900298SJohannes Berg { 142946900298SJohannes Berg struct ieee80211_local *local = sdata->local; 14302103dec1SSimon Wunderlich struct cfg80211_chan_def chandef; 143146900298SJohannes Berg struct sk_buff *skb; 143246900298SJohannes Berg struct ieee80211_mgmt *mgmt; 1433b9a9ada1SJohannes Berg int ies_len; 1434c56ef672SDavid Spinadel u32 rate_masks[IEEE80211_NUM_BANDS] = {}; 1435c56ef672SDavid Spinadel struct ieee80211_scan_ies dummy_ie_desc; 143646900298SJohannes Berg 1437a806c558SPaul Stewart /* 1438a806c558SPaul Stewart * Do not send DS Channel parameter for directed probe requests 1439a806c558SPaul Stewart * in order to maximize the chance that we get a response. Some 1440a806c558SPaul Stewart * badly-behaved APs don't respond when this parameter is included. 1441a806c558SPaul Stewart */ 14422103dec1SSimon Wunderlich chandef.width = sdata->vif.bss_conf.chandef.width; 1443a806c558SPaul Stewart if (directed) 14442103dec1SSimon Wunderlich chandef.chan = NULL; 1445a806c558SPaul Stewart else 14462103dec1SSimon Wunderlich chandef.chan = chan; 1447651b5225SJouni Malinen 14487c12ce8bSKalle Valo skb = ieee80211_probereq_get(&local->hw, &sdata->vif, 1449b9a9ada1SJohannes Berg ssid, ssid_len, 100 + ie_len); 14505b2bbf75SJohannes Berg if (!skb) 1451b9a9ada1SJohannes Berg return NULL; 1452b9a9ada1SJohannes Berg 1453c56ef672SDavid Spinadel rate_masks[chan->band] = ratemask; 1454b9a9ada1SJohannes Berg ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), 1455c56ef672SDavid Spinadel skb_tailroom(skb), &dummy_ie_desc, 1456c56ef672SDavid Spinadel ie, ie_len, BIT(chan->band), 1457c56ef672SDavid Spinadel rate_masks, &chandef); 1458b9a9ada1SJohannes Berg skb_put(skb, ies_len); 14597c12ce8bSKalle Valo 146046900298SJohannes Berg if (dst) { 14617c12ce8bSKalle Valo mgmt = (struct ieee80211_mgmt *) skb->data; 146246900298SJohannes Berg memcpy(mgmt->da, dst, ETH_ALEN); 146346900298SJohannes Berg memcpy(mgmt->bssid, dst, ETH_ALEN); 146446900298SJohannes Berg } 146546900298SJohannes Berg 146662ae67beSJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 14675b2bbf75SJohannes Berg 1468a619a4c0SJuuso Oikarinen return skb; 1469a619a4c0SJuuso Oikarinen } 1470a619a4c0SJuuso Oikarinen 1471a619a4c0SJuuso Oikarinen void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1472a619a4c0SJuuso Oikarinen const u8 *ssid, size_t ssid_len, 1473a806c558SPaul Stewart const u8 *ie, size_t ie_len, 14741672c0e3SJohannes Berg u32 ratemask, bool directed, u32 tx_flags, 147555de908aSJohannes Berg struct ieee80211_channel *channel, bool scan) 1476a619a4c0SJuuso Oikarinen { 1477a619a4c0SJuuso Oikarinen struct sk_buff *skb; 1478a619a4c0SJuuso Oikarinen 1479fe94fe05SJohannes Berg skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, 14806b77863bSJohannes Berg ssid, ssid_len, 148185a237feSJohannes Berg ie, ie_len, directed); 1482aad14cebSRajkumar Manoharan if (skb) { 14831672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= tx_flags; 148455de908aSJohannes Berg if (scan) 148555de908aSJohannes Berg ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); 148655de908aSJohannes Berg else 1487a619a4c0SJuuso Oikarinen ieee80211_tx_skb(sdata, skb); 148846900298SJohannes Berg } 1489aad14cebSRajkumar Manoharan } 149046900298SJohannes Berg 14912103dec1SSimon Wunderlich u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 149246900298SJohannes Berg struct ieee802_11_elems *elems, 14939ebb61a2SAshok Nagarajan enum ieee80211_band band, u32 *basic_rates) 149446900298SJohannes Berg { 149546900298SJohannes Berg struct ieee80211_supported_band *sband; 149646900298SJohannes Berg size_t num_rates; 14972103dec1SSimon Wunderlich u32 supp_rates, rate_flags; 14982103dec1SSimon Wunderlich int i, j, shift; 14992103dec1SSimon Wunderlich sband = sdata->local->hw.wiphy->bands[band]; 15002103dec1SSimon Wunderlich 15012103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 15022103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 150346900298SJohannes Berg 15044ee73f33SMichal Kazior if (WARN_ON(!sband)) 15054ee73f33SMichal Kazior return 1; 150646900298SJohannes Berg 150746900298SJohannes Berg num_rates = sband->n_bitrates; 150846900298SJohannes Berg supp_rates = 0; 150946900298SJohannes Berg for (i = 0; i < elems->supp_rates_len + 151046900298SJohannes Berg elems->ext_supp_rates_len; i++) { 151146900298SJohannes Berg u8 rate = 0; 151246900298SJohannes Berg int own_rate; 15139ebb61a2SAshok Nagarajan bool is_basic; 151446900298SJohannes Berg if (i < elems->supp_rates_len) 151546900298SJohannes Berg rate = elems->supp_rates[i]; 151646900298SJohannes Berg else if (elems->ext_supp_rates) 151746900298SJohannes Berg rate = elems->ext_supp_rates 151846900298SJohannes Berg [i - elems->supp_rates_len]; 151946900298SJohannes Berg own_rate = 5 * (rate & 0x7f); 15209ebb61a2SAshok Nagarajan is_basic = !!(rate & 0x80); 15219ebb61a2SAshok Nagarajan 15229ebb61a2SAshok Nagarajan if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 15239ebb61a2SAshok Nagarajan continue; 15249ebb61a2SAshok Nagarajan 15259ebb61a2SAshok Nagarajan for (j = 0; j < num_rates; j++) { 15262103dec1SSimon Wunderlich int brate; 15272103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[j].flags) 15282103dec1SSimon Wunderlich != rate_flags) 15292103dec1SSimon Wunderlich continue; 15302103dec1SSimon Wunderlich 15312103dec1SSimon Wunderlich brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, 15322103dec1SSimon Wunderlich 1 << shift); 15332103dec1SSimon Wunderlich 15342103dec1SSimon Wunderlich if (brate == own_rate) { 153546900298SJohannes Berg supp_rates |= BIT(j); 15369ebb61a2SAshok Nagarajan if (basic_rates && is_basic) 15379ebb61a2SAshok Nagarajan *basic_rates |= BIT(j); 15389ebb61a2SAshok Nagarajan } 15399ebb61a2SAshok Nagarajan } 154046900298SJohannes Berg } 154146900298SJohannes Berg return supp_rates; 154246900298SJohannes Berg } 1543f2753ddbSJohannes Berg 154484f6a01cSJohannes Berg void ieee80211_stop_device(struct ieee80211_local *local) 154584f6a01cSJohannes Berg { 154684f6a01cSJohannes Berg ieee80211_led_radio(local, false); 154767408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 154884f6a01cSJohannes Berg 154984f6a01cSJohannes Berg cancel_work_sync(&local->reconfig_filter); 155084f6a01cSJohannes Berg 155184f6a01cSJohannes Berg flush_workqueue(local->workqueue); 1552678f415fSLennert Buytenhek drv_stop(local); 155384f6a01cSJohannes Berg } 155484f6a01cSJohannes Berg 1555f6837ba8SJohannes Berg static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1556f6837ba8SJohannes Berg { 1557f6837ba8SJohannes Berg struct ieee80211_sub_if_data *sdata; 1558f6837ba8SJohannes Berg struct ieee80211_chanctx *ctx; 1559f6837ba8SJohannes Berg 1560f6837ba8SJohannes Berg /* 1561f6837ba8SJohannes Berg * We get here if during resume the device can't be restarted properly. 1562f6837ba8SJohannes Berg * We might also get here if this happens during HW reset, which is a 1563f6837ba8SJohannes Berg * slightly different situation and we need to drop all connections in 1564f6837ba8SJohannes Berg * the latter case. 1565f6837ba8SJohannes Berg * 1566f6837ba8SJohannes Berg * Ask cfg80211 to turn off all interfaces, this will result in more 1567f6837ba8SJohannes Berg * warnings but at least we'll then get into a clean stopped state. 1568f6837ba8SJohannes Berg */ 1569f6837ba8SJohannes Berg 1570f6837ba8SJohannes Berg local->resuming = false; 1571f6837ba8SJohannes Berg local->suspended = false; 1572f6837ba8SJohannes Berg local->started = false; 1573f6837ba8SJohannes Berg 1574f6837ba8SJohannes Berg /* scheduled scan clearly can't be running any more, but tell 1575f6837ba8SJohannes Berg * cfg80211 and clear local state 1576f6837ba8SJohannes Berg */ 1577f6837ba8SJohannes Berg ieee80211_sched_scan_end(local); 1578f6837ba8SJohannes Berg 1579f6837ba8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) 1580f6837ba8SJohannes Berg sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1581f6837ba8SJohannes Berg 1582f6837ba8SJohannes Berg /* Mark channel contexts as not being in the driver any more to avoid 1583f6837ba8SJohannes Berg * removing them from the driver during the shutdown process... 1584f6837ba8SJohannes Berg */ 1585f6837ba8SJohannes Berg mutex_lock(&local->chanctx_mtx); 1586f6837ba8SJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 1587f6837ba8SJohannes Berg ctx->driver_present = false; 1588f6837ba8SJohannes Berg mutex_unlock(&local->chanctx_mtx); 1589f6837ba8SJohannes Berg 1590f6837ba8SJohannes Berg cfg80211_shutdown_all_interfaces(local->hw.wiphy); 1591f6837ba8SJohannes Berg } 1592f6837ba8SJohannes Berg 1593153a5fc4SStanislaw Gruszka static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1594153a5fc4SStanislaw Gruszka struct ieee80211_sub_if_data *sdata) 1595153a5fc4SStanislaw Gruszka { 1596153a5fc4SStanislaw Gruszka struct ieee80211_chanctx_conf *conf; 1597153a5fc4SStanislaw Gruszka struct ieee80211_chanctx *ctx; 1598153a5fc4SStanislaw Gruszka 1599153a5fc4SStanislaw Gruszka if (!local->use_chanctx) 1600153a5fc4SStanislaw Gruszka return; 1601153a5fc4SStanislaw Gruszka 1602153a5fc4SStanislaw Gruszka mutex_lock(&local->chanctx_mtx); 1603153a5fc4SStanislaw Gruszka conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 1604153a5fc4SStanislaw Gruszka lockdep_is_held(&local->chanctx_mtx)); 1605153a5fc4SStanislaw Gruszka if (conf) { 1606153a5fc4SStanislaw Gruszka ctx = container_of(conf, struct ieee80211_chanctx, conf); 1607153a5fc4SStanislaw Gruszka drv_assign_vif_chanctx(local, sdata, ctx); 1608153a5fc4SStanislaw Gruszka } 1609153a5fc4SStanislaw Gruszka mutex_unlock(&local->chanctx_mtx); 1610153a5fc4SStanislaw Gruszka } 1611153a5fc4SStanislaw Gruszka 1612f2753ddbSJohannes Berg int ieee80211_reconfig(struct ieee80211_local *local) 1613f2753ddbSJohannes Berg { 1614f2753ddbSJohannes Berg struct ieee80211_hw *hw = &local->hw; 1615f2753ddbSJohannes Berg struct ieee80211_sub_if_data *sdata; 161655de908aSJohannes Berg struct ieee80211_chanctx *ctx; 1617f2753ddbSJohannes Berg struct sta_info *sta; 16182683d65bSEliad Peller int res, i; 1619d888130aSJohannes Berg bool reconfig_due_to_wowlan = false; 1620d43c6b6eSDavid Spinadel struct ieee80211_sub_if_data *sched_scan_sdata; 1621d43c6b6eSDavid Spinadel bool sched_scan_stopped = false; 1622d888130aSJohannes Berg 16238f21b0adSJohannes Berg #ifdef CONFIG_PM 1624ceb99fe0SJohannes Berg if (local->suspended) 1625ceb99fe0SJohannes Berg local->resuming = true; 1626f2753ddbSJohannes Berg 1627eecc4800SJohannes Berg if (local->wowlan) { 1628eecc4800SJohannes Berg res = drv_resume(local); 162927b3eb9cSJohannes Berg local->wowlan = false; 1630eecc4800SJohannes Berg if (res < 0) { 1631eecc4800SJohannes Berg local->resuming = false; 1632eecc4800SJohannes Berg return res; 1633eecc4800SJohannes Berg } 1634eecc4800SJohannes Berg if (res == 0) 1635eecc4800SJohannes Berg goto wake_up; 1636eecc4800SJohannes Berg WARN_ON(res > 1); 1637eecc4800SJohannes Berg /* 1638eecc4800SJohannes Berg * res is 1, which means the driver requested 1639eecc4800SJohannes Berg * to go through a regular reset on wakeup. 1640eecc4800SJohannes Berg */ 1641d888130aSJohannes Berg reconfig_due_to_wowlan = true; 1642eecc4800SJohannes Berg } 1643eecc4800SJohannes Berg #endif 164494f9b97bSJohannes Berg /* everything else happens only if HW was up & running */ 164594f9b97bSJohannes Berg if (!local->open_count) 164694f9b97bSJohannes Berg goto wake_up; 164794f9b97bSJohannes Berg 164824feda00SLuis R. Rodriguez /* 164924feda00SLuis R. Rodriguez * Upon resume hardware can sometimes be goofy due to 165024feda00SLuis R. Rodriguez * various platform / driver / bus issues, so restarting 165124feda00SLuis R. Rodriguez * the device may at times not work immediately. Propagate 165224feda00SLuis R. Rodriguez * the error. 165324feda00SLuis R. Rodriguez */ 165424487981SJohannes Berg res = drv_start(local); 165524feda00SLuis R. Rodriguez if (res) { 1656f6837ba8SJohannes Berg if (local->suspended) 1657f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1658f6837ba8SJohannes Berg else 1659f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable during restart.\n"); 1660f6837ba8SJohannes Berg ieee80211_handle_reconfig_failure(local); 166124feda00SLuis R. Rodriguez return res; 166224feda00SLuis R. Rodriguez } 1663f2753ddbSJohannes Berg 16647f281975SYogesh Ashok Powar /* setup fragmentation threshold */ 16657f281975SYogesh Ashok Powar drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 16667f281975SYogesh Ashok Powar 16677f281975SYogesh Ashok Powar /* setup RTS threshold */ 16687f281975SYogesh Ashok Powar drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 16697f281975SYogesh Ashok Powar 16707f281975SYogesh Ashok Powar /* reset coverage class */ 16717f281975SYogesh Ashok Powar drv_set_coverage_class(local, hw->wiphy->coverage_class); 16727f281975SYogesh Ashok Powar 16731f87f7d3SJohannes Berg ieee80211_led_radio(local, true); 167467408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 167567408c8cSJohannes Berg IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1676f2753ddbSJohannes Berg 1677f2753ddbSJohannes Berg /* add interfaces */ 16784b6f1dd6SJohannes Berg sdata = rtnl_dereference(local->monitor_sdata); 16794b6f1dd6SJohannes Berg if (sdata) { 16803c3e21e7SJohannes Berg /* in HW restart it exists already */ 16813c3e21e7SJohannes Berg WARN_ON(local->resuming); 16824b6f1dd6SJohannes Berg res = drv_add_interface(local, sdata); 16834b6f1dd6SJohannes Berg if (WARN_ON(res)) { 16840c2bef46SMonam Agarwal RCU_INIT_POINTER(local->monitor_sdata, NULL); 16854b6f1dd6SJohannes Berg synchronize_net(); 16864b6f1dd6SJohannes Berg kfree(sdata); 16874b6f1dd6SJohannes Berg } 16884b6f1dd6SJohannes Berg } 16894b6f1dd6SJohannes Berg 1690f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1691f2753ddbSJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1692f2753ddbSJohannes Berg sdata->vif.type != NL80211_IFTYPE_MONITOR && 16931ed32e4fSJohannes Berg ieee80211_sdata_running(sdata)) 16947b7eab6fSJohannes Berg res = drv_add_interface(local, sdata); 1695f2753ddbSJohannes Berg } 1696f2753ddbSJohannes Berg 169755de908aSJohannes Berg /* add channel contexts */ 1698f0dea9c7SArend van Spriel if (local->use_chanctx) { 169955de908aSJohannes Berg mutex_lock(&local->chanctx_mtx); 170055de908aSJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 170155de908aSJohannes Berg WARN_ON(drv_add_chanctx(local, ctx)); 170255de908aSJohannes Berg mutex_unlock(&local->chanctx_mtx); 170355de908aSJohannes Berg 17046352c87fSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 17056352c87fSJohannes Berg if (!ieee80211_sdata_running(sdata)) 17066352c87fSJohannes Berg continue; 1707153a5fc4SStanislaw Gruszka ieee80211_assign_chanctx(local, sdata); 17086352c87fSJohannes Berg } 17096352c87fSJohannes Berg 1710fe5f2559SJohannes Berg sdata = rtnl_dereference(local->monitor_sdata); 1711153a5fc4SStanislaw Gruszka if (sdata && ieee80211_sdata_running(sdata)) 1712153a5fc4SStanislaw Gruszka ieee80211_assign_chanctx(local, sdata); 17137df180f7SZhao, Gang } 1714fe5f2559SJohannes Berg 1715f2753ddbSJohannes Berg /* add STAs back */ 171634e89507SJohannes Berg mutex_lock(&local->sta_mtx); 1717f2753ddbSJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 1718f09603a2SJohannes Berg enum ieee80211_sta_state state; 1719f09603a2SJohannes Berg 17202e8d397eSArik Nemtsov if (!sta->uploaded) 17212e8d397eSArik Nemtsov continue; 17222e8d397eSArik Nemtsov 17232e8d397eSArik Nemtsov /* AP-mode stations will be added later */ 17242e8d397eSArik Nemtsov if (sta->sdata->vif.type == NL80211_IFTYPE_AP) 17252e8d397eSArik Nemtsov continue; 17262e8d397eSArik Nemtsov 1727f09603a2SJohannes Berg for (state = IEEE80211_STA_NOTEXIST; 1728bd34ab62SMeenakshi Venkataraman state < sta->sta_state; state++) 17292e8d397eSArik Nemtsov WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 17302e8d397eSArik Nemtsov state + 1)); 1731f2753ddbSJohannes Berg } 173234e89507SJohannes Berg mutex_unlock(&local->sta_mtx); 1733f2753ddbSJohannes Berg 17342683d65bSEliad Peller /* reconfigure tx conf */ 173554bcbc69SJohannes Berg if (hw->queues >= IEEE80211_NUM_ACS) { 1736f6f3def3SEliad Peller list_for_each_entry(sdata, &local->interfaces, list) { 1737f6f3def3SEliad Peller if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1738f6f3def3SEliad Peller sdata->vif.type == NL80211_IFTYPE_MONITOR || 1739f6f3def3SEliad Peller !ieee80211_sdata_running(sdata)) 1740f6f3def3SEliad Peller continue; 1741f6f3def3SEliad Peller 174254bcbc69SJohannes Berg for (i = 0; i < IEEE80211_NUM_ACS; i++) 174354bcbc69SJohannes Berg drv_conf_tx(local, sdata, i, 174454bcbc69SJohannes Berg &sdata->tx_conf[i]); 174554bcbc69SJohannes Berg } 1746f6f3def3SEliad Peller } 17472683d65bSEliad Peller 1748f2753ddbSJohannes Berg /* reconfigure hardware */ 1749f2753ddbSJohannes Berg ieee80211_hw_config(local, ~0); 1750f2753ddbSJohannes Berg 1751f2753ddbSJohannes Berg ieee80211_configure_filter(local); 1752f2753ddbSJohannes Berg 1753f2753ddbSJohannes Berg /* Finally also reconfigure all the BSS information */ 1754f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1755ac8dd506SJohannes Berg u32 changed; 1756ac8dd506SJohannes Berg 17579607e6b6SJohannes Berg if (!ieee80211_sdata_running(sdata)) 1758f2753ddbSJohannes Berg continue; 1759ac8dd506SJohannes Berg 1760ac8dd506SJohannes Berg /* common change flags for all interface types */ 1761ac8dd506SJohannes Berg changed = BSS_CHANGED_ERP_CTS_PROT | 1762ac8dd506SJohannes Berg BSS_CHANGED_ERP_PREAMBLE | 1763ac8dd506SJohannes Berg BSS_CHANGED_ERP_SLOT | 1764ac8dd506SJohannes Berg BSS_CHANGED_HT | 1765ac8dd506SJohannes Berg BSS_CHANGED_BASIC_RATES | 1766ac8dd506SJohannes Berg BSS_CHANGED_BEACON_INT | 1767ac8dd506SJohannes Berg BSS_CHANGED_BSSID | 17684ced3f74SJohannes Berg BSS_CHANGED_CQM | 176955de47f6SEliad Peller BSS_CHANGED_QOS | 17701ea6f9c0SJohannes Berg BSS_CHANGED_IDLE | 17711ea6f9c0SJohannes Berg BSS_CHANGED_TXPOWER; 1772ac8dd506SJohannes Berg 1773f2753ddbSJohannes Berg switch (sdata->vif.type) { 1774f2753ddbSJohannes Berg case NL80211_IFTYPE_STATION: 17750d392e93SEliad Peller changed |= BSS_CHANGED_ASSOC | 1776ab095877SEliad Peller BSS_CHANGED_ARP_FILTER | 1777ab095877SEliad Peller BSS_CHANGED_PS; 1778c65dd147SEmmanuel Grumbach 1779989c6505SAlexander Bondar /* Re-send beacon info report to the driver */ 1780989c6505SAlexander Bondar if (sdata->u.mgd.have_beacon) 1781989c6505SAlexander Bondar changed |= BSS_CHANGED_BEACON_INFO; 1782c65dd147SEmmanuel Grumbach 17838d61ffa5SJohannes Berg sdata_lock(sdata); 1784ac8dd506SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 17858d61ffa5SJohannes Berg sdata_unlock(sdata); 1786ac8dd506SJohannes Berg break; 1787f2753ddbSJohannes Berg case NL80211_IFTYPE_ADHOC: 1788ac8dd506SJohannes Berg changed |= BSS_CHANGED_IBSS; 1789ac8dd506SJohannes Berg /* fall through */ 1790f2753ddbSJohannes Berg case NL80211_IFTYPE_AP: 1791339afbf4SJohannes Berg changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; 1792e7979ac7SArik Nemtsov 17931041638fSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP) { 1794e7979ac7SArik Nemtsov changed |= BSS_CHANGED_AP_PROBE_RESP; 1795e7979ac7SArik Nemtsov 17961041638fSJohannes Berg if (rcu_access_pointer(sdata->u.ap.beacon)) 17971041638fSJohannes Berg drv_start_ap(local, sdata); 17981041638fSJohannes Berg } 17991041638fSJohannes Berg 18007827493bSArik Nemtsov /* fall through */ 1801f2753ddbSJohannes Berg case NL80211_IFTYPE_MESH_POINT: 18028da34932SJohannes Berg if (sdata->vif.bss_conf.enable_beacon) { 1803ac8dd506SJohannes Berg changed |= BSS_CHANGED_BEACON | 1804ac8dd506SJohannes Berg BSS_CHANGED_BEACON_ENABLED; 18052d0ddec5SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 18068da34932SJohannes Berg } 1807f2753ddbSJohannes Berg break; 1808f2753ddbSJohannes Berg case NL80211_IFTYPE_WDS: 1809f2753ddbSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 1810f2753ddbSJohannes Berg case NL80211_IFTYPE_MONITOR: 181198104fdeSJohannes Berg case NL80211_IFTYPE_P2P_DEVICE: 1812b205786eSZhao, Gang /* nothing to do */ 1813f142c6b9SJohannes Berg break; 1814f2753ddbSJohannes Berg case NL80211_IFTYPE_UNSPECIFIED: 18152e161f78SJohannes Berg case NUM_NL80211_IFTYPES: 18162ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_CLIENT: 18172ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_GO: 1818f2753ddbSJohannes Berg WARN_ON(1); 1819f2753ddbSJohannes Berg break; 1820f2753ddbSJohannes Berg } 1821f2753ddbSJohannes Berg } 1822f2753ddbSJohannes Berg 18238e1b23b9SEyal Shapira ieee80211_recalc_ps(local, -1); 18248e1b23b9SEyal Shapira 18252a419056SJohannes Berg /* 18266e1b1b24SEliad Peller * The sta might be in psm against the ap (e.g. because 18276e1b1b24SEliad Peller * this was the state before a hw restart), so we 18286e1b1b24SEliad Peller * explicitly send a null packet in order to make sure 18296e1b1b24SEliad Peller * it'll sync against the ap (and get out of psm). 18306e1b1b24SEliad Peller */ 18316e1b1b24SEliad Peller if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 18326e1b1b24SEliad Peller list_for_each_entry(sdata, &local->interfaces, list) { 18336e1b1b24SEliad Peller if (sdata->vif.type != NL80211_IFTYPE_STATION) 18346e1b1b24SEliad Peller continue; 183520f544eeSJohannes Berg if (!sdata->u.mgd.associated) 183620f544eeSJohannes Berg continue; 18376e1b1b24SEliad Peller 18386e1b1b24SEliad Peller ieee80211_send_nullfunc(local, sdata, 0); 18396e1b1b24SEliad Peller } 18406e1b1b24SEliad Peller } 18416e1b1b24SEliad Peller 18422e8d397eSArik Nemtsov /* APs are now beaconing, add back stations */ 18432e8d397eSArik Nemtsov mutex_lock(&local->sta_mtx); 18442e8d397eSArik Nemtsov list_for_each_entry(sta, &local->sta_list, list) { 18452e8d397eSArik Nemtsov enum ieee80211_sta_state state; 18462e8d397eSArik Nemtsov 18472e8d397eSArik Nemtsov if (!sta->uploaded) 18482e8d397eSArik Nemtsov continue; 18492e8d397eSArik Nemtsov 18502e8d397eSArik Nemtsov if (sta->sdata->vif.type != NL80211_IFTYPE_AP) 18512e8d397eSArik Nemtsov continue; 18522e8d397eSArik Nemtsov 18532e8d397eSArik Nemtsov for (state = IEEE80211_STA_NOTEXIST; 18542e8d397eSArik Nemtsov state < sta->sta_state; state++) 18552e8d397eSArik Nemtsov WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 18562e8d397eSArik Nemtsov state + 1)); 18572e8d397eSArik Nemtsov } 18582e8d397eSArik Nemtsov mutex_unlock(&local->sta_mtx); 18592e8d397eSArik Nemtsov 18607b21aea0SEyal Shapira /* add back keys */ 18617b21aea0SEyal Shapira list_for_each_entry(sdata, &local->interfaces, list) 18627b21aea0SEyal Shapira if (ieee80211_sdata_running(sdata)) 18637b21aea0SEyal Shapira ieee80211_enable_keys(sdata); 18647b21aea0SEyal Shapira 1865c6209488SEliad Peller wake_up: 186604800adaSArik Nemtsov local->in_reconfig = false; 186704800adaSArik Nemtsov barrier(); 186804800adaSArik Nemtsov 18693c3e21e7SJohannes Berg if (local->monitors == local->open_count && local->monitors > 0) 18703c3e21e7SJohannes Berg ieee80211_add_virtual_monitor(local); 18713c3e21e7SJohannes Berg 18726e1b1b24SEliad Peller /* 18732a419056SJohannes Berg * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 18742a419056SJohannes Berg * sessions can be established after a resume. 18752a419056SJohannes Berg * 18762a419056SJohannes Berg * Also tear down aggregation sessions since reconfiguring 18772a419056SJohannes Berg * them in a hardware restart scenario is not easily done 18782a419056SJohannes Berg * right now, and the hardware will have lost information 18792a419056SJohannes Berg * about the sessions, but we and the AP still think they 18802a419056SJohannes Berg * are active. This is really a workaround though. 18812a419056SJohannes Berg */ 188274e2bd1fSWey-Yi Guy if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { 18832a419056SJohannes Berg mutex_lock(&local->sta_mtx); 18842a419056SJohannes Berg 18852a419056SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 1886c82c4a80SJohannes Berg ieee80211_sta_tear_down_BA_sessions( 1887c82c4a80SJohannes Berg sta, AGG_STOP_LOCAL_REQUEST); 1888c2c98fdeSJohannes Berg clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 188974e2bd1fSWey-Yi Guy } 18902a419056SJohannes Berg 18912a419056SJohannes Berg mutex_unlock(&local->sta_mtx); 189274e2bd1fSWey-Yi Guy } 189374e2bd1fSWey-Yi Guy 1894445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 1895cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1896cca07b00SLuciano Coelho false); 1897f2753ddbSJohannes Berg 18985bb644a0SJohannes Berg /* 189932769814SArik Nemtsov * Reconfigure sched scan if it was interrupted by FW restart or 190032769814SArik Nemtsov * suspend. 190132769814SArik Nemtsov */ 190232769814SArik Nemtsov mutex_lock(&local->mtx); 190332769814SArik Nemtsov sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 190432769814SArik Nemtsov lockdep_is_held(&local->mtx)); 190532769814SArik Nemtsov if (sched_scan_sdata && local->sched_scan_req) 190632769814SArik Nemtsov /* 190732769814SArik Nemtsov * Sched scan stopped, but we don't want to report it. Instead, 190832769814SArik Nemtsov * we're trying to reschedule. 190932769814SArik Nemtsov */ 191032769814SArik Nemtsov if (__ieee80211_request_sched_scan_start(sched_scan_sdata, 191132769814SArik Nemtsov local->sched_scan_req)) 191232769814SArik Nemtsov sched_scan_stopped = true; 191332769814SArik Nemtsov mutex_unlock(&local->mtx); 191432769814SArik Nemtsov 191532769814SArik Nemtsov if (sched_scan_stopped) 1916e669ba2dSEliad Peller cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); 191732769814SArik Nemtsov 191832769814SArik Nemtsov /* 19195bb644a0SJohannes Berg * If this is for hw restart things are still running. 19205bb644a0SJohannes Berg * We may want to change that later, however. 19215bb644a0SJohannes Berg */ 19228f21b0adSJohannes Berg if (!local->suspended || reconfig_due_to_wowlan) 19239214ad7fSJohannes Berg drv_restart_complete(local); 19248f21b0adSJohannes Berg 19258f21b0adSJohannes Berg if (!local->suspended) 19265bb644a0SJohannes Berg return 0; 19275bb644a0SJohannes Berg 19285bb644a0SJohannes Berg #ifdef CONFIG_PM 1929ceb99fe0SJohannes Berg /* first set suspended false, then resuming */ 19305bb644a0SJohannes Berg local->suspended = false; 1931ceb99fe0SJohannes Berg mb(); 1932ceb99fe0SJohannes Berg local->resuming = false; 19335bb644a0SJohannes Berg 1934b8360ab8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 1935b8360ab8SJohannes Berg if (!ieee80211_sdata_running(sdata)) 1936b8360ab8SJohannes Berg continue; 1937b8360ab8SJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_STATION) 1938b8360ab8SJohannes Berg ieee80211_sta_restart(sdata); 1939b8360ab8SJohannes Berg } 1940b8360ab8SJohannes Berg 194126d59535SJohannes Berg mod_timer(&local->sta_cleanup, jiffies + 1); 19425bb644a0SJohannes Berg #else 19435bb644a0SJohannes Berg WARN_ON(1); 19445bb644a0SJohannes Berg #endif 1945d43c6b6eSDavid Spinadel 1946f2753ddbSJohannes Berg return 0; 1947f2753ddbSJohannes Berg } 194842935ecaSLuis R. Rodriguez 194995acac61SJohannes Berg void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 195095acac61SJohannes Berg { 195195acac61SJohannes Berg struct ieee80211_sub_if_data *sdata; 195295acac61SJohannes Berg struct ieee80211_local *local; 195395acac61SJohannes Berg struct ieee80211_key *key; 195495acac61SJohannes Berg 195595acac61SJohannes Berg if (WARN_ON(!vif)) 195695acac61SJohannes Berg return; 195795acac61SJohannes Berg 195895acac61SJohannes Berg sdata = vif_to_sdata(vif); 195995acac61SJohannes Berg local = sdata->local; 196095acac61SJohannes Berg 196195acac61SJohannes Berg if (WARN_ON(!local->resuming)) 196295acac61SJohannes Berg return; 196395acac61SJohannes Berg 196495acac61SJohannes Berg if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 196595acac61SJohannes Berg return; 196695acac61SJohannes Berg 196795acac61SJohannes Berg sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; 196895acac61SJohannes Berg 196995acac61SJohannes Berg mutex_lock(&local->key_mtx); 197095acac61SJohannes Berg list_for_each_entry(key, &sdata->key_list, list) 197195acac61SJohannes Berg key->flags |= KEY_FLAG_TAINTED; 197295acac61SJohannes Berg mutex_unlock(&local->key_mtx); 197395acac61SJohannes Berg } 197495acac61SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 197595acac61SJohannes Berg 197604ecd257SJohannes Berg void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) 19770f78231bSJohannes Berg { 197804ecd257SJohannes Berg struct ieee80211_local *local = sdata->local; 197904ecd257SJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 198004ecd257SJohannes Berg struct ieee80211_chanctx *chanctx; 19810f78231bSJohannes Berg 198204ecd257SJohannes Berg mutex_lock(&local->chanctx_mtx); 19830f78231bSJohannes Berg 198404ecd257SJohannes Berg chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 198504ecd257SJohannes Berg lockdep_is_held(&local->chanctx_mtx)); 19860f78231bSJohannes Berg 198704ecd257SJohannes Berg if (WARN_ON_ONCE(!chanctx_conf)) 19885d8e4237SJohannes Berg goto unlock; 19890f78231bSJohannes Berg 199004ecd257SJohannes Berg chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 199104ecd257SJohannes Berg ieee80211_recalc_smps_chanctx(local, chanctx); 19925d8e4237SJohannes Berg unlock: 199304ecd257SJohannes Berg mutex_unlock(&local->chanctx_mtx); 19940f78231bSJohannes Berg } 19958e664fb3SJohannes Berg 199621f659bfSEliad Peller void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) 199721f659bfSEliad Peller { 199821f659bfSEliad Peller struct ieee80211_local *local = sdata->local; 199921f659bfSEliad Peller struct ieee80211_chanctx_conf *chanctx_conf; 200021f659bfSEliad Peller struct ieee80211_chanctx *chanctx; 200121f659bfSEliad Peller 200221f659bfSEliad Peller mutex_lock(&local->chanctx_mtx); 200321f659bfSEliad Peller 200421f659bfSEliad Peller chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 200521f659bfSEliad Peller lockdep_is_held(&local->chanctx_mtx)); 200621f659bfSEliad Peller 200721f659bfSEliad Peller if (WARN_ON_ONCE(!chanctx_conf)) 200821f659bfSEliad Peller goto unlock; 200921f659bfSEliad Peller 201021f659bfSEliad Peller chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 201121f659bfSEliad Peller ieee80211_recalc_chanctx_min_def(local, chanctx); 201221f659bfSEliad Peller unlock: 201321f659bfSEliad Peller mutex_unlock(&local->chanctx_mtx); 201421f659bfSEliad Peller } 201521f659bfSEliad Peller 20168e664fb3SJohannes Berg static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) 20178e664fb3SJohannes Berg { 20188e664fb3SJohannes Berg int i; 20198e664fb3SJohannes Berg 20208e664fb3SJohannes Berg for (i = 0; i < n_ids; i++) 20218e664fb3SJohannes Berg if (ids[i] == id) 20228e664fb3SJohannes Berg return true; 20238e664fb3SJohannes Berg return false; 20248e664fb3SJohannes Berg } 20258e664fb3SJohannes Berg 20268e664fb3SJohannes Berg /** 20278e664fb3SJohannes Berg * ieee80211_ie_split - split an IE buffer according to ordering 20288e664fb3SJohannes Berg * 20298e664fb3SJohannes Berg * @ies: the IE buffer 20308e664fb3SJohannes Berg * @ielen: the length of the IE buffer 20318e664fb3SJohannes Berg * @ids: an array with element IDs that are allowed before 20328e664fb3SJohannes Berg * the split 20338e664fb3SJohannes Berg * @n_ids: the size of the element ID array 20348e664fb3SJohannes Berg * @offset: offset where to start splitting in the buffer 20358e664fb3SJohannes Berg * 20368e664fb3SJohannes Berg * This function splits an IE buffer by updating the @offset 20378e664fb3SJohannes Berg * variable to point to the location where the buffer should be 20388e664fb3SJohannes Berg * split. 20398e664fb3SJohannes Berg * 20408e664fb3SJohannes Berg * It assumes that the given IE buffer is well-formed, this 20418e664fb3SJohannes Berg * has to be guaranteed by the caller! 20428e664fb3SJohannes Berg * 20438e664fb3SJohannes Berg * It also assumes that the IEs in the buffer are ordered 20448e664fb3SJohannes Berg * correctly, if not the result of using this function will not 20458e664fb3SJohannes Berg * be ordered correctly either, i.e. it does no reordering. 20468e664fb3SJohannes Berg * 20478e664fb3SJohannes Berg * The function returns the offset where the next part of the 20488e664fb3SJohannes Berg * buffer starts, which may be @ielen if the entire (remainder) 20498e664fb3SJohannes Berg * of the buffer should be used. 20508e664fb3SJohannes Berg */ 20518e664fb3SJohannes Berg size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 20528e664fb3SJohannes Berg const u8 *ids, int n_ids, size_t offset) 20538e664fb3SJohannes Berg { 20548e664fb3SJohannes Berg size_t pos = offset; 20558e664fb3SJohannes Berg 20568e664fb3SJohannes Berg while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) 20578e664fb3SJohannes Berg pos += 2 + ies[pos + 1]; 20588e664fb3SJohannes Berg 20598e664fb3SJohannes Berg return pos; 20608e664fb3SJohannes Berg } 20618e664fb3SJohannes Berg 20628e664fb3SJohannes Berg size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 20638e664fb3SJohannes Berg { 20648e664fb3SJohannes Berg size_t pos = offset; 20658e664fb3SJohannes Berg 20668e664fb3SJohannes Berg while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 20678e664fb3SJohannes Berg pos += 2 + ies[pos + 1]; 20688e664fb3SJohannes Berg 20698e664fb3SJohannes Berg return pos; 20708e664fb3SJohannes Berg } 2071615f7b9bSMeenakshi Venkataraman 2072615f7b9bSMeenakshi Venkataraman static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, 2073615f7b9bSMeenakshi Venkataraman int rssi_min_thold, 2074615f7b9bSMeenakshi Venkataraman int rssi_max_thold) 2075615f7b9bSMeenakshi Venkataraman { 2076615f7b9bSMeenakshi Venkataraman trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); 2077615f7b9bSMeenakshi Venkataraman 2078615f7b9bSMeenakshi Venkataraman if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 2079615f7b9bSMeenakshi Venkataraman return; 2080615f7b9bSMeenakshi Venkataraman 2081615f7b9bSMeenakshi Venkataraman /* 2082615f7b9bSMeenakshi Venkataraman * Scale up threshold values before storing it, as the RSSI averaging 2083615f7b9bSMeenakshi Venkataraman * algorithm uses a scaled up value as well. Change this scaling 2084615f7b9bSMeenakshi Venkataraman * factor if the RSSI averaging algorithm changes. 2085615f7b9bSMeenakshi Venkataraman */ 2086615f7b9bSMeenakshi Venkataraman sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; 2087615f7b9bSMeenakshi Venkataraman sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; 2088615f7b9bSMeenakshi Venkataraman } 2089615f7b9bSMeenakshi Venkataraman 2090615f7b9bSMeenakshi Venkataraman void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 2091615f7b9bSMeenakshi Venkataraman int rssi_min_thold, 2092615f7b9bSMeenakshi Venkataraman int rssi_max_thold) 2093615f7b9bSMeenakshi Venkataraman { 2094615f7b9bSMeenakshi Venkataraman struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2095615f7b9bSMeenakshi Venkataraman 2096615f7b9bSMeenakshi Venkataraman WARN_ON(rssi_min_thold == rssi_max_thold || 2097615f7b9bSMeenakshi Venkataraman rssi_min_thold > rssi_max_thold); 2098615f7b9bSMeenakshi Venkataraman 2099615f7b9bSMeenakshi Venkataraman _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, 2100615f7b9bSMeenakshi Venkataraman rssi_max_thold); 2101615f7b9bSMeenakshi Venkataraman } 2102615f7b9bSMeenakshi Venkataraman EXPORT_SYMBOL(ieee80211_enable_rssi_reports); 2103615f7b9bSMeenakshi Venkataraman 2104615f7b9bSMeenakshi Venkataraman void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) 2105615f7b9bSMeenakshi Venkataraman { 2106615f7b9bSMeenakshi Venkataraman struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2107615f7b9bSMeenakshi Venkataraman 2108615f7b9bSMeenakshi Venkataraman _ieee80211_enable_rssi_reports(sdata, 0, 0); 2109615f7b9bSMeenakshi Venkataraman } 2110615f7b9bSMeenakshi Venkataraman EXPORT_SYMBOL(ieee80211_disable_rssi_reports); 2111768db343SArik Nemtsov 2112ef96a842SBen Greear u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 211342e7aa77SAlexander Simon u16 cap) 211442e7aa77SAlexander Simon { 211542e7aa77SAlexander Simon __le16 tmp; 211642e7aa77SAlexander Simon 211742e7aa77SAlexander Simon *pos++ = WLAN_EID_HT_CAPABILITY; 211842e7aa77SAlexander Simon *pos++ = sizeof(struct ieee80211_ht_cap); 211942e7aa77SAlexander Simon memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 212042e7aa77SAlexander Simon 212142e7aa77SAlexander Simon /* capability flags */ 212242e7aa77SAlexander Simon tmp = cpu_to_le16(cap); 212342e7aa77SAlexander Simon memcpy(pos, &tmp, sizeof(u16)); 212442e7aa77SAlexander Simon pos += sizeof(u16); 212542e7aa77SAlexander Simon 212642e7aa77SAlexander Simon /* AMPDU parameters */ 2127ef96a842SBen Greear *pos++ = ht_cap->ampdu_factor | 2128ef96a842SBen Greear (ht_cap->ampdu_density << 212942e7aa77SAlexander Simon IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 213042e7aa77SAlexander Simon 213142e7aa77SAlexander Simon /* MCS set */ 2132ef96a842SBen Greear memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2133ef96a842SBen Greear pos += sizeof(ht_cap->mcs); 213442e7aa77SAlexander Simon 213542e7aa77SAlexander Simon /* extended capabilities */ 213642e7aa77SAlexander Simon pos += sizeof(__le16); 213742e7aa77SAlexander Simon 213842e7aa77SAlexander Simon /* BF capabilities */ 213942e7aa77SAlexander Simon pos += sizeof(__le32); 214042e7aa77SAlexander Simon 214142e7aa77SAlexander Simon /* antenna selection */ 214242e7aa77SAlexander Simon pos += sizeof(u8); 214342e7aa77SAlexander Simon 214442e7aa77SAlexander Simon return pos; 214542e7aa77SAlexander Simon } 214642e7aa77SAlexander Simon 2147ba0afa2fSMahesh Palivela u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2148ba0afa2fSMahesh Palivela u32 cap) 2149ba0afa2fSMahesh Palivela { 2150ba0afa2fSMahesh Palivela __le32 tmp; 2151ba0afa2fSMahesh Palivela 2152ba0afa2fSMahesh Palivela *pos++ = WLAN_EID_VHT_CAPABILITY; 2153d4950281SMahesh Palivela *pos++ = sizeof(struct ieee80211_vht_cap); 2154d4950281SMahesh Palivela memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2155ba0afa2fSMahesh Palivela 2156ba0afa2fSMahesh Palivela /* capability flags */ 2157ba0afa2fSMahesh Palivela tmp = cpu_to_le32(cap); 2158ba0afa2fSMahesh Palivela memcpy(pos, &tmp, sizeof(u32)); 2159ba0afa2fSMahesh Palivela pos += sizeof(u32); 2160ba0afa2fSMahesh Palivela 2161ba0afa2fSMahesh Palivela /* VHT MCS set */ 2162ba0afa2fSMahesh Palivela memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2163ba0afa2fSMahesh Palivela pos += sizeof(vht_cap->vht_mcs); 2164ba0afa2fSMahesh Palivela 2165ba0afa2fSMahesh Palivela return pos; 2166ba0afa2fSMahesh Palivela } 2167ba0afa2fSMahesh Palivela 2168074d46d1SJohannes Berg u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 21694bf88530SJohannes Berg const struct cfg80211_chan_def *chandef, 2170431e3154SAshok Nagarajan u16 prot_mode) 217142e7aa77SAlexander Simon { 2172074d46d1SJohannes Berg struct ieee80211_ht_operation *ht_oper; 217342e7aa77SAlexander Simon /* Build HT Information */ 2174074d46d1SJohannes Berg *pos++ = WLAN_EID_HT_OPERATION; 2175074d46d1SJohannes Berg *pos++ = sizeof(struct ieee80211_ht_operation); 2176074d46d1SJohannes Berg ht_oper = (struct ieee80211_ht_operation *)pos; 21774bf88530SJohannes Berg ht_oper->primary_chan = ieee80211_frequency_to_channel( 21784bf88530SJohannes Berg chandef->chan->center_freq); 21794bf88530SJohannes Berg switch (chandef->width) { 21804bf88530SJohannes Berg case NL80211_CHAN_WIDTH_160: 21814bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80P80: 21824bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80: 21834bf88530SJohannes Berg case NL80211_CHAN_WIDTH_40: 21844bf88530SJohannes Berg if (chandef->center_freq1 > chandef->chan->center_freq) 21854bf88530SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 21864bf88530SJohannes Berg else 2187074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 218842e7aa77SAlexander Simon break; 218942e7aa77SAlexander Simon default: 2190074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 219142e7aa77SAlexander Simon break; 219242e7aa77SAlexander Simon } 2193aee286c2SThomas Pedersen if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 21944bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 21954bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20) 2196074d46d1SJohannes Berg ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2197ff3cc5f4SSimon Wunderlich 2198431e3154SAshok Nagarajan ht_oper->operation_mode = cpu_to_le16(prot_mode); 2199074d46d1SJohannes Berg ht_oper->stbc_param = 0x0000; 220042e7aa77SAlexander Simon 220142e7aa77SAlexander Simon /* It seems that Basic MCS set and Supported MCS set 220242e7aa77SAlexander Simon are identical for the first 10 bytes */ 2203074d46d1SJohannes Berg memset(&ht_oper->basic_set, 0, 16); 2204074d46d1SJohannes Berg memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 220542e7aa77SAlexander Simon 2206074d46d1SJohannes Berg return pos + sizeof(struct ieee80211_ht_operation); 220742e7aa77SAlexander Simon } 220842e7aa77SAlexander Simon 22094bf88530SJohannes Berg void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 22104a3cb702SJohannes Berg const struct ieee80211_ht_operation *ht_oper, 22114bf88530SJohannes Berg struct cfg80211_chan_def *chandef) 221242e7aa77SAlexander Simon { 221342e7aa77SAlexander Simon enum nl80211_channel_type channel_type; 221442e7aa77SAlexander Simon 22154bf88530SJohannes Berg if (!ht_oper) { 22164bf88530SJohannes Berg cfg80211_chandef_create(chandef, control_chan, 22174bf88530SJohannes Berg NL80211_CHAN_NO_HT); 22184bf88530SJohannes Berg return; 22194bf88530SJohannes Berg } 222042e7aa77SAlexander Simon 2221074d46d1SJohannes Berg switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 222242e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_NONE: 222342e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT20; 222442e7aa77SAlexander Simon break; 222542e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 222642e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40PLUS; 222742e7aa77SAlexander Simon break; 222842e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 222942e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40MINUS; 223042e7aa77SAlexander Simon break; 223142e7aa77SAlexander Simon default: 223242e7aa77SAlexander Simon channel_type = NL80211_CHAN_NO_HT; 223342e7aa77SAlexander Simon } 223442e7aa77SAlexander Simon 22354bf88530SJohannes Berg cfg80211_chandef_create(chandef, control_chan, channel_type); 223642e7aa77SAlexander Simon } 223742e7aa77SAlexander Simon 22382103dec1SSimon Wunderlich int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 22392103dec1SSimon Wunderlich const struct ieee80211_supported_band *sband, 22402103dec1SSimon Wunderlich const u8 *srates, int srates_len, u32 *rates) 22412103dec1SSimon Wunderlich { 22422103dec1SSimon Wunderlich u32 rate_flags = ieee80211_chandef_rate_flags(chandef); 22432103dec1SSimon Wunderlich int shift = ieee80211_chandef_get_shift(chandef); 22442103dec1SSimon Wunderlich struct ieee80211_rate *br; 22452103dec1SSimon Wunderlich int brate, rate, i, j, count = 0; 22462103dec1SSimon Wunderlich 22472103dec1SSimon Wunderlich *rates = 0; 22482103dec1SSimon Wunderlich 22492103dec1SSimon Wunderlich for (i = 0; i < srates_len; i++) { 22502103dec1SSimon Wunderlich rate = srates[i] & 0x7f; 22512103dec1SSimon Wunderlich 22522103dec1SSimon Wunderlich for (j = 0; j < sband->n_bitrates; j++) { 22532103dec1SSimon Wunderlich br = &sband->bitrates[j]; 22542103dec1SSimon Wunderlich if ((rate_flags & br->flags) != rate_flags) 22552103dec1SSimon Wunderlich continue; 22562103dec1SSimon Wunderlich 22572103dec1SSimon Wunderlich brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); 22582103dec1SSimon Wunderlich if (brate == rate) { 22592103dec1SSimon Wunderlich *rates |= BIT(j); 22602103dec1SSimon Wunderlich count++; 22612103dec1SSimon Wunderlich break; 22622103dec1SSimon Wunderlich } 22632103dec1SSimon Wunderlich } 22642103dec1SSimon Wunderlich } 22652103dec1SSimon Wunderlich return count; 22662103dec1SSimon Wunderlich } 22672103dec1SSimon Wunderlich 2268fc8a7321SJohannes Berg int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 22696b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 22706b77863bSJohannes Berg enum ieee80211_band band) 2271768db343SArik Nemtsov { 2272768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 2273768db343SArik Nemtsov struct ieee80211_supported_band *sband; 22742103dec1SSimon Wunderlich int rate, shift; 2275768db343SArik Nemtsov u8 i, rates, *pos; 2276fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 22772103dec1SSimon Wunderlich u32 rate_flags; 2278768db343SArik Nemtsov 22792103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 22802103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 22816b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 22822103dec1SSimon Wunderlich rates = 0; 22832103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 22842103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 22852103dec1SSimon Wunderlich continue; 22862103dec1SSimon Wunderlich rates++; 22872103dec1SSimon Wunderlich } 2288768db343SArik Nemtsov if (rates > 8) 2289768db343SArik Nemtsov rates = 8; 2290768db343SArik Nemtsov 2291768db343SArik Nemtsov if (skb_tailroom(skb) < rates + 2) 2292768db343SArik Nemtsov return -ENOMEM; 2293768db343SArik Nemtsov 2294768db343SArik Nemtsov pos = skb_put(skb, rates + 2); 2295768db343SArik Nemtsov *pos++ = WLAN_EID_SUPP_RATES; 2296768db343SArik Nemtsov *pos++ = rates; 2297768db343SArik Nemtsov for (i = 0; i < rates; i++) { 2298657c3e0cSAshok Nagarajan u8 basic = 0; 22992103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 23002103dec1SSimon Wunderlich continue; 23012103dec1SSimon Wunderlich 2302657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 2303657c3e0cSAshok Nagarajan basic = 0x80; 2304768db343SArik Nemtsov rate = sband->bitrates[i].bitrate; 23052103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 23062103dec1SSimon Wunderlich 5 * (1 << shift)); 23072103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 2308768db343SArik Nemtsov } 2309768db343SArik Nemtsov 2310768db343SArik Nemtsov return 0; 2311768db343SArik Nemtsov } 2312768db343SArik Nemtsov 2313fc8a7321SJohannes Berg int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 23146b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 23156b77863bSJohannes Berg enum ieee80211_band band) 2316768db343SArik Nemtsov { 2317768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 2318768db343SArik Nemtsov struct ieee80211_supported_band *sband; 2319cc63ec76SChun-Yeow Yeoh int rate, shift; 2320768db343SArik Nemtsov u8 i, exrates, *pos; 2321fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 23222103dec1SSimon Wunderlich u32 rate_flags; 23232103dec1SSimon Wunderlich 23242103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 23252103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 2326768db343SArik Nemtsov 23276b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 23282103dec1SSimon Wunderlich exrates = 0; 23292103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 23302103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 23312103dec1SSimon Wunderlich continue; 23322103dec1SSimon Wunderlich exrates++; 23332103dec1SSimon Wunderlich } 23342103dec1SSimon Wunderlich 2335768db343SArik Nemtsov if (exrates > 8) 2336768db343SArik Nemtsov exrates -= 8; 2337768db343SArik Nemtsov else 2338768db343SArik Nemtsov exrates = 0; 2339768db343SArik Nemtsov 2340768db343SArik Nemtsov if (skb_tailroom(skb) < exrates + 2) 2341768db343SArik Nemtsov return -ENOMEM; 2342768db343SArik Nemtsov 2343768db343SArik Nemtsov if (exrates) { 2344768db343SArik Nemtsov pos = skb_put(skb, exrates + 2); 2345768db343SArik Nemtsov *pos++ = WLAN_EID_EXT_SUPP_RATES; 2346768db343SArik Nemtsov *pos++ = exrates; 2347768db343SArik Nemtsov for (i = 8; i < sband->n_bitrates; i++) { 2348657c3e0cSAshok Nagarajan u8 basic = 0; 23492103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) 23502103dec1SSimon Wunderlich != rate_flags) 23512103dec1SSimon Wunderlich continue; 2352657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 2353657c3e0cSAshok Nagarajan basic = 0x80; 23542103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 23552103dec1SSimon Wunderlich 5 * (1 << shift)); 23562103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 2357768db343SArik Nemtsov } 2358768db343SArik Nemtsov } 2359768db343SArik Nemtsov return 0; 2360768db343SArik Nemtsov } 23611dae27f8SWey-Yi Guy 23621dae27f8SWey-Yi Guy int ieee80211_ave_rssi(struct ieee80211_vif *vif) 23631dae27f8SWey-Yi Guy { 23641dae27f8SWey-Yi Guy struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 23651dae27f8SWey-Yi Guy struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 23661dae27f8SWey-Yi Guy 2367be6bcabcSWey-Yi Guy if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { 2368be6bcabcSWey-Yi Guy /* non-managed type inferfaces */ 2369be6bcabcSWey-Yi Guy return 0; 2370be6bcabcSWey-Yi Guy } 23713a7bba64SEmmanuel Grumbach return ifmgd->ave_beacon_signal / 16; 23721dae27f8SWey-Yi Guy } 23730d8a0a17SWey-Yi Guy EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 237404ecd257SJohannes Berg 237504ecd257SJohannes Berg u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 237604ecd257SJohannes Berg { 237704ecd257SJohannes Berg if (!mcs) 237804ecd257SJohannes Berg return 1; 237904ecd257SJohannes Berg 238004ecd257SJohannes Berg /* TODO: consider rx_highest */ 238104ecd257SJohannes Berg 238204ecd257SJohannes Berg if (mcs->rx_mask[3]) 238304ecd257SJohannes Berg return 4; 238404ecd257SJohannes Berg if (mcs->rx_mask[2]) 238504ecd257SJohannes Berg return 3; 238604ecd257SJohannes Berg if (mcs->rx_mask[1]) 238704ecd257SJohannes Berg return 2; 238804ecd257SJohannes Berg return 1; 238904ecd257SJohannes Berg } 2390f4bda337SThomas Pedersen 2391f4bda337SThomas Pedersen /** 2392f4bda337SThomas Pedersen * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 2393f4bda337SThomas Pedersen * @local: mac80211 hw info struct 2394f4bda337SThomas Pedersen * @status: RX status 2395f4bda337SThomas Pedersen * @mpdu_len: total MPDU length (including FCS) 2396f4bda337SThomas Pedersen * @mpdu_offset: offset into MPDU to calculate timestamp at 2397f4bda337SThomas Pedersen * 2398f4bda337SThomas Pedersen * This function calculates the RX timestamp at the given MPDU offset, taking 2399f4bda337SThomas Pedersen * into account what the RX timestamp was. An offset of 0 will just normalize 2400f4bda337SThomas Pedersen * the timestamp to TSF at beginning of MPDU reception. 2401f4bda337SThomas Pedersen */ 2402f4bda337SThomas Pedersen u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 2403f4bda337SThomas Pedersen struct ieee80211_rx_status *status, 2404f4bda337SThomas Pedersen unsigned int mpdu_len, 2405f4bda337SThomas Pedersen unsigned int mpdu_offset) 2406f4bda337SThomas Pedersen { 2407f4bda337SThomas Pedersen u64 ts = status->mactime; 2408f4bda337SThomas Pedersen struct rate_info ri; 2409f4bda337SThomas Pedersen u16 rate; 2410f4bda337SThomas Pedersen 2411f4bda337SThomas Pedersen if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 2412f4bda337SThomas Pedersen return 0; 2413f4bda337SThomas Pedersen 2414f4bda337SThomas Pedersen memset(&ri, 0, sizeof(ri)); 2415f4bda337SThomas Pedersen 2416f4bda337SThomas Pedersen /* Fill cfg80211 rate info */ 2417f4bda337SThomas Pedersen if (status->flag & RX_FLAG_HT) { 2418f4bda337SThomas Pedersen ri.mcs = status->rate_idx; 2419f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_MCS; 2420f4bda337SThomas Pedersen if (status->flag & RX_FLAG_40MHZ) 2421f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 2422f4bda337SThomas Pedersen if (status->flag & RX_FLAG_SHORT_GI) 2423f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 24245614618eSJohannes Berg } else if (status->flag & RX_FLAG_VHT) { 24255614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 24265614618eSJohannes Berg ri.mcs = status->rate_idx; 24275614618eSJohannes Berg ri.nss = status->vht_nss; 24285614618eSJohannes Berg if (status->flag & RX_FLAG_40MHZ) 24295614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 24301b8d242aSEmmanuel Grumbach if (status->vht_flag & RX_VHT_FLAG_80MHZ) 24315614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 24321b8d242aSEmmanuel Grumbach if (status->vht_flag & RX_VHT_FLAG_80P80MHZ) 24335614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 24341b8d242aSEmmanuel Grumbach if (status->vht_flag & RX_VHT_FLAG_160MHZ) 24355614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 24365614618eSJohannes Berg if (status->flag & RX_FLAG_SHORT_GI) 24375614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 2438f4bda337SThomas Pedersen } else { 2439f4bda337SThomas Pedersen struct ieee80211_supported_band *sband; 24402103dec1SSimon Wunderlich int shift = 0; 24412103dec1SSimon Wunderlich int bitrate; 24422103dec1SSimon Wunderlich 24432103dec1SSimon Wunderlich if (status->flag & RX_FLAG_10MHZ) 24442103dec1SSimon Wunderlich shift = 1; 24452103dec1SSimon Wunderlich if (status->flag & RX_FLAG_5MHZ) 24462103dec1SSimon Wunderlich shift = 2; 2447f4bda337SThomas Pedersen 2448f4bda337SThomas Pedersen sband = local->hw.wiphy->bands[status->band]; 24492103dec1SSimon Wunderlich bitrate = sband->bitrates[status->rate_idx].bitrate; 24502103dec1SSimon Wunderlich ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); 2451f4bda337SThomas Pedersen } 2452f4bda337SThomas Pedersen 2453f4bda337SThomas Pedersen rate = cfg80211_calculate_bitrate(&ri); 2454d86aa4f8SJohannes Berg if (WARN_ONCE(!rate, 2455d86aa4f8SJohannes Berg "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", 2456d86aa4f8SJohannes Berg status->flag, status->rate_idx, status->vht_nss)) 2457d86aa4f8SJohannes Berg return 0; 2458f4bda337SThomas Pedersen 2459f4bda337SThomas Pedersen /* rewind from end of MPDU */ 2460f4bda337SThomas Pedersen if (status->flag & RX_FLAG_MACTIME_END) 2461f4bda337SThomas Pedersen ts -= mpdu_len * 8 * 10 / rate; 2462f4bda337SThomas Pedersen 2463f4bda337SThomas Pedersen ts += mpdu_offset * 8 * 10 / rate; 2464f4bda337SThomas Pedersen 2465f4bda337SThomas Pedersen return ts; 2466f4bda337SThomas Pedersen } 2467164eb02dSSimon Wunderlich 2468164eb02dSSimon Wunderlich void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 2469164eb02dSSimon Wunderlich { 2470164eb02dSSimon Wunderlich struct ieee80211_sub_if_data *sdata; 2471d2859df5SJanusz Dziedzic struct cfg80211_chan_def chandef; 2472164eb02dSSimon Wunderlich 247334a3740dSJohannes Berg mutex_lock(&local->mtx); 2474164eb02dSSimon Wunderlich mutex_lock(&local->iflist_mtx); 2475164eb02dSSimon Wunderlich list_for_each_entry(sdata, &local->interfaces, list) { 247634a3740dSJohannes Berg /* it might be waiting for the local->mtx, but then 247734a3740dSJohannes Berg * by the time it gets it, sdata->wdev.cac_started 247834a3740dSJohannes Berg * will no longer be true 247934a3740dSJohannes Berg */ 248034a3740dSJohannes Berg cancel_delayed_work(&sdata->dfs_cac_timer_work); 2481164eb02dSSimon Wunderlich 2482164eb02dSSimon Wunderlich if (sdata->wdev.cac_started) { 2483d2859df5SJanusz Dziedzic chandef = sdata->vif.bss_conf.chandef; 2484164eb02dSSimon Wunderlich ieee80211_vif_release_channel(sdata); 2485164eb02dSSimon Wunderlich cfg80211_cac_event(sdata->dev, 2486d2859df5SJanusz Dziedzic &chandef, 2487164eb02dSSimon Wunderlich NL80211_RADAR_CAC_ABORTED, 2488164eb02dSSimon Wunderlich GFP_KERNEL); 2489164eb02dSSimon Wunderlich } 2490164eb02dSSimon Wunderlich } 2491164eb02dSSimon Wunderlich mutex_unlock(&local->iflist_mtx); 249234a3740dSJohannes Berg mutex_unlock(&local->mtx); 2493164eb02dSSimon Wunderlich } 2494164eb02dSSimon Wunderlich 2495164eb02dSSimon Wunderlich void ieee80211_dfs_radar_detected_work(struct work_struct *work) 2496164eb02dSSimon Wunderlich { 2497164eb02dSSimon Wunderlich struct ieee80211_local *local = 2498164eb02dSSimon Wunderlich container_of(work, struct ieee80211_local, radar_detected_work); 249984a3d1c9SJanusz Dziedzic struct cfg80211_chan_def chandef = local->hw.conf.chandef; 2500164eb02dSSimon Wunderlich 2501164eb02dSSimon Wunderlich ieee80211_dfs_cac_cancel(local); 2502164eb02dSSimon Wunderlich 2503164eb02dSSimon Wunderlich if (local->use_chanctx) 2504164eb02dSSimon Wunderlich /* currently not handled */ 2505164eb02dSSimon Wunderlich WARN_ON(1); 250684a3d1c9SJanusz Dziedzic else 2507164eb02dSSimon Wunderlich cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 2508164eb02dSSimon Wunderlich } 2509164eb02dSSimon Wunderlich 2510164eb02dSSimon Wunderlich void ieee80211_radar_detected(struct ieee80211_hw *hw) 2511164eb02dSSimon Wunderlich { 2512164eb02dSSimon Wunderlich struct ieee80211_local *local = hw_to_local(hw); 2513164eb02dSSimon Wunderlich 2514164eb02dSSimon Wunderlich trace_api_radar_detected(local); 2515164eb02dSSimon Wunderlich 2516164eb02dSSimon Wunderlich ieee80211_queue_work(hw, &local->radar_detected_work); 2517164eb02dSSimon Wunderlich } 2518164eb02dSSimon Wunderlich EXPORT_SYMBOL(ieee80211_radar_detected); 2519e6b7cde4SSimon Wunderlich 2520e6b7cde4SSimon Wunderlich u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) 2521e6b7cde4SSimon Wunderlich { 2522e6b7cde4SSimon Wunderlich u32 ret; 2523e6b7cde4SSimon Wunderlich int tmp; 2524e6b7cde4SSimon Wunderlich 2525e6b7cde4SSimon Wunderlich switch (c->width) { 2526e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20: 2527e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 2528e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2529e6b7cde4SSimon Wunderlich break; 2530e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_40: 2531e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20; 2532e6b7cde4SSimon Wunderlich c->center_freq1 = c->chan->center_freq; 2533e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_40MHZ | 2534e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_VHT; 2535e6b7cde4SSimon Wunderlich break; 2536e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80: 2537e6b7cde4SSimon Wunderlich tmp = (30 + c->chan->center_freq - c->center_freq1)/20; 2538e6b7cde4SSimon Wunderlich /* n_P40 */ 2539e6b7cde4SSimon Wunderlich tmp /= 2; 2540e6b7cde4SSimon Wunderlich /* freq_P40 */ 2541e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; 2542e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_40; 2543e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_VHT; 2544e6b7cde4SSimon Wunderlich break; 2545e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80P80: 2546e6b7cde4SSimon Wunderlich c->center_freq2 = 0; 2547e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 2548e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_80P80MHZ | 2549e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_160MHZ; 2550e6b7cde4SSimon Wunderlich break; 2551e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_160: 2552e6b7cde4SSimon Wunderlich /* n_P20 */ 2553e6b7cde4SSimon Wunderlich tmp = (70 + c->chan->center_freq - c->center_freq1)/20; 2554e6b7cde4SSimon Wunderlich /* n_P80 */ 2555e6b7cde4SSimon Wunderlich tmp /= 4; 2556e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; 2557e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 2558e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_80P80MHZ | 2559e6b7cde4SSimon Wunderlich IEEE80211_STA_DISABLE_160MHZ; 2560e6b7cde4SSimon Wunderlich break; 2561e6b7cde4SSimon Wunderlich default: 2562e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20_NOHT: 2563e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 2564e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 2565e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2566e6b7cde4SSimon Wunderlich break; 2567e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_5: 2568e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_10: 2569e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 2570e6b7cde4SSimon Wunderlich /* keep c->width */ 2571e6b7cde4SSimon Wunderlich ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 2572e6b7cde4SSimon Wunderlich break; 2573e6b7cde4SSimon Wunderlich } 2574e6b7cde4SSimon Wunderlich 2575e6b7cde4SSimon Wunderlich WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 2576e6b7cde4SSimon Wunderlich 2577e6b7cde4SSimon Wunderlich return ret; 2578e6b7cde4SSimon Wunderlich } 2579687da132SEmmanuel Grumbach 2580687da132SEmmanuel Grumbach /* 2581687da132SEmmanuel Grumbach * Returns true if smps_mode_new is strictly more restrictive than 2582687da132SEmmanuel Grumbach * smps_mode_old. 2583687da132SEmmanuel Grumbach */ 2584687da132SEmmanuel Grumbach bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2585687da132SEmmanuel Grumbach enum ieee80211_smps_mode smps_mode_new) 2586687da132SEmmanuel Grumbach { 2587687da132SEmmanuel Grumbach if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 2588687da132SEmmanuel Grumbach smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 2589687da132SEmmanuel Grumbach return false; 2590687da132SEmmanuel Grumbach 2591687da132SEmmanuel Grumbach switch (smps_mode_old) { 2592687da132SEmmanuel Grumbach case IEEE80211_SMPS_STATIC: 2593687da132SEmmanuel Grumbach return false; 2594687da132SEmmanuel Grumbach case IEEE80211_SMPS_DYNAMIC: 2595687da132SEmmanuel Grumbach return smps_mode_new == IEEE80211_SMPS_STATIC; 2596687da132SEmmanuel Grumbach case IEEE80211_SMPS_OFF: 2597687da132SEmmanuel Grumbach return smps_mode_new != IEEE80211_SMPS_OFF; 2598687da132SEmmanuel Grumbach default: 2599687da132SEmmanuel Grumbach WARN_ON(1); 2600687da132SEmmanuel Grumbach } 2601687da132SEmmanuel Grumbach 2602687da132SEmmanuel Grumbach return false; 2603687da132SEmmanuel Grumbach } 2604c6da674aSChun-Yeow Yeoh 2605c6da674aSChun-Yeow Yeoh int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2606c6da674aSChun-Yeow Yeoh struct cfg80211_csa_settings *csa_settings) 2607c6da674aSChun-Yeow Yeoh { 2608c6da674aSChun-Yeow Yeoh struct sk_buff *skb; 2609c6da674aSChun-Yeow Yeoh struct ieee80211_mgmt *mgmt; 2610c6da674aSChun-Yeow Yeoh struct ieee80211_local *local = sdata->local; 2611c6da674aSChun-Yeow Yeoh int freq; 2612c6da674aSChun-Yeow Yeoh int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + 2613c6da674aSChun-Yeow Yeoh sizeof(mgmt->u.action.u.chan_switch); 2614c6da674aSChun-Yeow Yeoh u8 *pos; 2615c6da674aSChun-Yeow Yeoh 2616c6da674aSChun-Yeow Yeoh if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2617c6da674aSChun-Yeow Yeoh sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2618c6da674aSChun-Yeow Yeoh return -EOPNOTSUPP; 2619c6da674aSChun-Yeow Yeoh 2620c6da674aSChun-Yeow Yeoh skb = dev_alloc_skb(local->tx_headroom + hdr_len + 2621c6da674aSChun-Yeow Yeoh 5 + /* channel switch announcement element */ 2622c6da674aSChun-Yeow Yeoh 3 + /* secondary channel offset element */ 2623c6da674aSChun-Yeow Yeoh 8); /* mesh channel switch parameters element */ 2624c6da674aSChun-Yeow Yeoh if (!skb) 2625c6da674aSChun-Yeow Yeoh return -ENOMEM; 2626c6da674aSChun-Yeow Yeoh 2627c6da674aSChun-Yeow Yeoh skb_reserve(skb, local->tx_headroom); 2628c6da674aSChun-Yeow Yeoh mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); 2629c6da674aSChun-Yeow Yeoh memset(mgmt, 0, hdr_len); 2630c6da674aSChun-Yeow Yeoh mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2631c6da674aSChun-Yeow Yeoh IEEE80211_STYPE_ACTION); 2632c6da674aSChun-Yeow Yeoh 2633c6da674aSChun-Yeow Yeoh eth_broadcast_addr(mgmt->da); 2634c6da674aSChun-Yeow Yeoh memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2635c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 2636c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 2637c6da674aSChun-Yeow Yeoh } else { 2638c6da674aSChun-Yeow Yeoh struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2639c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 2640c6da674aSChun-Yeow Yeoh } 2641c6da674aSChun-Yeow Yeoh mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 2642c6da674aSChun-Yeow Yeoh mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 2643c6da674aSChun-Yeow Yeoh pos = skb_put(skb, 5); 2644c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 2645c6da674aSChun-Yeow Yeoh *pos++ = 3; /* IE length */ 2646c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 2647c6da674aSChun-Yeow Yeoh freq = csa_settings->chandef.chan->center_freq; 2648c6da674aSChun-Yeow Yeoh *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 2649c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->count; /* count */ 2650c6da674aSChun-Yeow Yeoh 2651c6da674aSChun-Yeow Yeoh if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 2652c6da674aSChun-Yeow Yeoh enum nl80211_channel_type ch_type; 2653c6da674aSChun-Yeow Yeoh 2654c6da674aSChun-Yeow Yeoh skb_put(skb, 3); 2655c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 2656c6da674aSChun-Yeow Yeoh *pos++ = 1; /* IE length */ 2657c6da674aSChun-Yeow Yeoh ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 2658c6da674aSChun-Yeow Yeoh if (ch_type == NL80211_CHAN_HT40PLUS) 2659c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2660c6da674aSChun-Yeow Yeoh else 2661c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2662c6da674aSChun-Yeow Yeoh } 2663c6da674aSChun-Yeow Yeoh 2664c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 2665c6da674aSChun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2666c6da674aSChun-Yeow Yeoh 2667c6da674aSChun-Yeow Yeoh skb_put(skb, 8); 2668c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 2669c6da674aSChun-Yeow Yeoh *pos++ = 6; /* IE length */ 2670c6da674aSChun-Yeow Yeoh *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 2671c6da674aSChun-Yeow Yeoh *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 2672c6da674aSChun-Yeow Yeoh *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 2673c6da674aSChun-Yeow Yeoh *pos++ |= csa_settings->block_tx ? 2674c6da674aSChun-Yeow Yeoh WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 2675c6da674aSChun-Yeow Yeoh put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 2676c6da674aSChun-Yeow Yeoh pos += 2; 2677ca91dc97SChun-Yeow Yeoh put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 2678c6da674aSChun-Yeow Yeoh pos += 2; 2679c6da674aSChun-Yeow Yeoh } 2680c6da674aSChun-Yeow Yeoh 2681c6da674aSChun-Yeow Yeoh ieee80211_tx_skb(sdata, skb); 2682c6da674aSChun-Yeow Yeoh return 0; 2683c6da674aSChun-Yeow Yeoh } 26842475b1ccSMax Stepanov 26852475b1ccSMax Stepanov bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) 26862475b1ccSMax Stepanov { 26872475b1ccSMax Stepanov return !(cs == NULL || cs->cipher == 0 || 26882475b1ccSMax Stepanov cs->hdr_len < cs->pn_len + cs->pn_off || 26892475b1ccSMax Stepanov cs->hdr_len <= cs->key_idx_off || 26902475b1ccSMax Stepanov cs->key_idx_shift > 7 || 26912475b1ccSMax Stepanov cs->key_idx_mask == 0); 26922475b1ccSMax Stepanov } 26932475b1ccSMax Stepanov 26942475b1ccSMax Stepanov bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) 26952475b1ccSMax Stepanov { 26962475b1ccSMax Stepanov int i; 26972475b1ccSMax Stepanov 26982475b1ccSMax Stepanov /* Ensure we have enough iftype bitmap space for all iftype values */ 26992475b1ccSMax Stepanov WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); 27002475b1ccSMax Stepanov 27012475b1ccSMax Stepanov for (i = 0; i < n; i++) 27022475b1ccSMax Stepanov if (!ieee80211_cs_valid(&cs[i])) 27032475b1ccSMax Stepanov return false; 27042475b1ccSMax Stepanov 27052475b1ccSMax Stepanov return true; 27062475b1ccSMax Stepanov } 27072475b1ccSMax Stepanov 27082475b1ccSMax Stepanov const struct ieee80211_cipher_scheme * 27092475b1ccSMax Stepanov ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 27102475b1ccSMax Stepanov enum nl80211_iftype iftype) 27112475b1ccSMax Stepanov { 27122475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; 27132475b1ccSMax Stepanov int n = local->hw.n_cipher_schemes; 27142475b1ccSMax Stepanov int i; 27152475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *cs = NULL; 27162475b1ccSMax Stepanov 27172475b1ccSMax Stepanov for (i = 0; i < n; i++) { 27182475b1ccSMax Stepanov if (l[i].cipher == cipher) { 27192475b1ccSMax Stepanov cs = &l[i]; 27202475b1ccSMax Stepanov break; 27212475b1ccSMax Stepanov } 27222475b1ccSMax Stepanov } 27232475b1ccSMax Stepanov 27242475b1ccSMax Stepanov if (!cs || !(cs->iftype & BIT(iftype))) 27252475b1ccSMax Stepanov return NULL; 27262475b1ccSMax Stepanov 27272475b1ccSMax Stepanov return cs; 27282475b1ccSMax Stepanov } 27292475b1ccSMax Stepanov 27302475b1ccSMax Stepanov int ieee80211_cs_headroom(struct ieee80211_local *local, 27312475b1ccSMax Stepanov struct cfg80211_crypto_settings *crypto, 27322475b1ccSMax Stepanov enum nl80211_iftype iftype) 27332475b1ccSMax Stepanov { 27342475b1ccSMax Stepanov const struct ieee80211_cipher_scheme *cs; 27352475b1ccSMax Stepanov int headroom = IEEE80211_ENCRYPT_HEADROOM; 27362475b1ccSMax Stepanov int i; 27372475b1ccSMax Stepanov 27382475b1ccSMax Stepanov for (i = 0; i < crypto->n_ciphers_pairwise; i++) { 27392475b1ccSMax Stepanov cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], 27402475b1ccSMax Stepanov iftype); 27412475b1ccSMax Stepanov 27422475b1ccSMax Stepanov if (cs && headroom < cs->hdr_len) 27432475b1ccSMax Stepanov headroom = cs->hdr_len; 27442475b1ccSMax Stepanov } 27452475b1ccSMax Stepanov 27462475b1ccSMax Stepanov cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); 27472475b1ccSMax Stepanov if (cs && headroom < cs->hdr_len) 27482475b1ccSMax Stepanov headroom = cs->hdr_len; 27492475b1ccSMax Stepanov 27502475b1ccSMax Stepanov return headroom; 27512475b1ccSMax Stepanov } 2752a7022e65SFelix Fietkau 2753a7022e65SFelix Fietkau static bool 2754a7022e65SFelix Fietkau ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 2755a7022e65SFelix Fietkau { 2756a7022e65SFelix Fietkau s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 2757a7022e65SFelix Fietkau int skip; 2758a7022e65SFelix Fietkau 2759a7022e65SFelix Fietkau if (end > 0) 2760a7022e65SFelix Fietkau return false; 2761a7022e65SFelix Fietkau 2762a7022e65SFelix Fietkau /* End time is in the past, check for repetitions */ 2763a7022e65SFelix Fietkau skip = DIV_ROUND_UP(-end, data->desc[i].interval); 2764a7022e65SFelix Fietkau if (data->count[i] < 255) { 2765a7022e65SFelix Fietkau if (data->count[i] <= skip) { 2766a7022e65SFelix Fietkau data->count[i] = 0; 2767a7022e65SFelix Fietkau return false; 2768a7022e65SFelix Fietkau } 2769a7022e65SFelix Fietkau 2770a7022e65SFelix Fietkau data->count[i] -= skip; 2771a7022e65SFelix Fietkau } 2772a7022e65SFelix Fietkau 2773a7022e65SFelix Fietkau data->desc[i].start += skip * data->desc[i].interval; 2774a7022e65SFelix Fietkau 2775a7022e65SFelix Fietkau return true; 2776a7022e65SFelix Fietkau } 2777a7022e65SFelix Fietkau 2778a7022e65SFelix Fietkau static bool 2779a7022e65SFelix Fietkau ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 2780a7022e65SFelix Fietkau s32 *offset) 2781a7022e65SFelix Fietkau { 2782a7022e65SFelix Fietkau bool ret = false; 2783a7022e65SFelix Fietkau int i; 2784a7022e65SFelix Fietkau 2785a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 2786a7022e65SFelix Fietkau s32 cur; 2787a7022e65SFelix Fietkau 2788a7022e65SFelix Fietkau if (!data->count[i]) 2789a7022e65SFelix Fietkau continue; 2790a7022e65SFelix Fietkau 2791a7022e65SFelix Fietkau if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 2792a7022e65SFelix Fietkau ret = true; 2793a7022e65SFelix Fietkau 2794a7022e65SFelix Fietkau cur = data->desc[i].start - tsf; 2795a7022e65SFelix Fietkau if (cur > *offset) 2796a7022e65SFelix Fietkau continue; 2797a7022e65SFelix Fietkau 2798a7022e65SFelix Fietkau cur = data->desc[i].start + data->desc[i].duration - tsf; 2799a7022e65SFelix Fietkau if (cur > *offset) 2800a7022e65SFelix Fietkau *offset = cur; 2801a7022e65SFelix Fietkau } 2802a7022e65SFelix Fietkau 2803a7022e65SFelix Fietkau return ret; 2804a7022e65SFelix Fietkau } 2805a7022e65SFelix Fietkau 2806a7022e65SFelix Fietkau static u32 2807a7022e65SFelix Fietkau ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 2808a7022e65SFelix Fietkau { 2809a7022e65SFelix Fietkau s32 offset = 0; 2810a7022e65SFelix Fietkau int tries = 0; 2811a7022e65SFelix Fietkau /* 2812a7022e65SFelix Fietkau * arbitrary limit, used to avoid infinite loops when combined NoA 2813a7022e65SFelix Fietkau * descriptors cover the full time period. 2814a7022e65SFelix Fietkau */ 2815a7022e65SFelix Fietkau int max_tries = 5; 2816a7022e65SFelix Fietkau 2817a7022e65SFelix Fietkau ieee80211_extend_absent_time(data, tsf, &offset); 2818a7022e65SFelix Fietkau do { 2819a7022e65SFelix Fietkau if (!ieee80211_extend_absent_time(data, tsf, &offset)) 2820a7022e65SFelix Fietkau break; 2821a7022e65SFelix Fietkau 2822a7022e65SFelix Fietkau tries++; 2823a7022e65SFelix Fietkau } while (tries < max_tries); 2824a7022e65SFelix Fietkau 2825a7022e65SFelix Fietkau return offset; 2826a7022e65SFelix Fietkau } 2827a7022e65SFelix Fietkau 2828a7022e65SFelix Fietkau void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 2829a7022e65SFelix Fietkau { 2830a7022e65SFelix Fietkau u32 next_offset = BIT(31) - 1; 2831a7022e65SFelix Fietkau int i; 2832a7022e65SFelix Fietkau 2833a7022e65SFelix Fietkau data->absent = 0; 2834a7022e65SFelix Fietkau data->has_next_tsf = false; 2835a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 2836a7022e65SFelix Fietkau s32 start; 2837a7022e65SFelix Fietkau 2838a7022e65SFelix Fietkau if (!data->count[i]) 2839a7022e65SFelix Fietkau continue; 2840a7022e65SFelix Fietkau 2841a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 2842a7022e65SFelix Fietkau start = data->desc[i].start - tsf; 2843a7022e65SFelix Fietkau if (start <= 0) 2844a7022e65SFelix Fietkau data->absent |= BIT(i); 2845a7022e65SFelix Fietkau 2846a7022e65SFelix Fietkau if (next_offset > start) 2847a7022e65SFelix Fietkau next_offset = start; 2848a7022e65SFelix Fietkau 2849a7022e65SFelix Fietkau data->has_next_tsf = true; 2850a7022e65SFelix Fietkau } 2851a7022e65SFelix Fietkau 2852a7022e65SFelix Fietkau if (data->absent) 2853a7022e65SFelix Fietkau next_offset = ieee80211_get_noa_absent_time(data, tsf); 2854a7022e65SFelix Fietkau 2855a7022e65SFelix Fietkau data->next_tsf = tsf + next_offset; 2856a7022e65SFelix Fietkau } 2857a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_update_p2p_noa); 2858a7022e65SFelix Fietkau 2859a7022e65SFelix Fietkau int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 2860a7022e65SFelix Fietkau struct ieee80211_noa_data *data, u32 tsf) 2861a7022e65SFelix Fietkau { 2862a7022e65SFelix Fietkau int ret = 0; 2863a7022e65SFelix Fietkau int i; 2864a7022e65SFelix Fietkau 2865a7022e65SFelix Fietkau memset(data, 0, sizeof(*data)); 2866a7022e65SFelix Fietkau 2867a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 2868a7022e65SFelix Fietkau const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 2869a7022e65SFelix Fietkau 2870a7022e65SFelix Fietkau if (!desc->count || !desc->duration) 2871a7022e65SFelix Fietkau continue; 2872a7022e65SFelix Fietkau 2873a7022e65SFelix Fietkau data->count[i] = desc->count; 2874a7022e65SFelix Fietkau data->desc[i].start = le32_to_cpu(desc->start_time); 2875a7022e65SFelix Fietkau data->desc[i].duration = le32_to_cpu(desc->duration); 2876a7022e65SFelix Fietkau data->desc[i].interval = le32_to_cpu(desc->interval); 2877a7022e65SFelix Fietkau 2878a7022e65SFelix Fietkau if (data->count[i] > 1 && 2879a7022e65SFelix Fietkau data->desc[i].interval < data->desc[i].duration) 2880a7022e65SFelix Fietkau continue; 2881a7022e65SFelix Fietkau 2882a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 2883a7022e65SFelix Fietkau ret++; 2884a7022e65SFelix Fietkau } 2885a7022e65SFelix Fietkau 2886a7022e65SFelix Fietkau if (ret) 2887a7022e65SFelix Fietkau ieee80211_update_p2p_noa(data, tsf); 2888a7022e65SFelix Fietkau 2889a7022e65SFelix Fietkau return ret; 2890a7022e65SFelix Fietkau } 2891a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 2892057d5f4bSThomas Pedersen 2893057d5f4bSThomas Pedersen void ieee80211_recalc_dtim(struct ieee80211_local *local, 2894057d5f4bSThomas Pedersen struct ieee80211_sub_if_data *sdata) 2895057d5f4bSThomas Pedersen { 2896057d5f4bSThomas Pedersen u64 tsf = drv_get_tsf(local, sdata); 2897057d5f4bSThomas Pedersen u64 dtim_count = 0; 2898057d5f4bSThomas Pedersen u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 2899057d5f4bSThomas Pedersen u8 dtim_period = sdata->vif.bss_conf.dtim_period; 2900057d5f4bSThomas Pedersen struct ps_data *ps; 2901057d5f4bSThomas Pedersen u8 bcns_from_dtim; 2902057d5f4bSThomas Pedersen 2903057d5f4bSThomas Pedersen if (tsf == -1ULL || !beacon_int || !dtim_period) 2904057d5f4bSThomas Pedersen return; 2905057d5f4bSThomas Pedersen 2906057d5f4bSThomas Pedersen if (sdata->vif.type == NL80211_IFTYPE_AP || 2907057d5f4bSThomas Pedersen sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 2908057d5f4bSThomas Pedersen if (!sdata->bss) 2909057d5f4bSThomas Pedersen return; 2910057d5f4bSThomas Pedersen 2911057d5f4bSThomas Pedersen ps = &sdata->bss->ps; 2912057d5f4bSThomas Pedersen } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 2913057d5f4bSThomas Pedersen ps = &sdata->u.mesh.ps; 2914057d5f4bSThomas Pedersen } else { 2915057d5f4bSThomas Pedersen return; 2916057d5f4bSThomas Pedersen } 2917057d5f4bSThomas Pedersen 2918057d5f4bSThomas Pedersen /* 2919057d5f4bSThomas Pedersen * actually finds last dtim_count, mac80211 will update in 2920057d5f4bSThomas Pedersen * __beacon_add_tim(). 2921057d5f4bSThomas Pedersen * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 2922057d5f4bSThomas Pedersen */ 2923057d5f4bSThomas Pedersen do_div(tsf, beacon_int); 2924057d5f4bSThomas Pedersen bcns_from_dtim = do_div(tsf, dtim_period); 2925057d5f4bSThomas Pedersen /* just had a DTIM */ 2926057d5f4bSThomas Pedersen if (!bcns_from_dtim) 2927057d5f4bSThomas Pedersen dtim_count = 0; 2928057d5f4bSThomas Pedersen else 2929057d5f4bSThomas Pedersen dtim_count = dtim_period - bcns_from_dtim; 2930057d5f4bSThomas Pedersen 2931057d5f4bSThomas Pedersen ps->dtim_count = dtim_count; 2932057d5f4bSThomas Pedersen } 293373de86a3SLuciano Coelho 293473de86a3SLuciano Coelho int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 293573de86a3SLuciano Coelho const struct cfg80211_chan_def *chandef, 293673de86a3SLuciano Coelho enum ieee80211_chanctx_mode chanmode, 293773de86a3SLuciano Coelho u8 radar_detect) 293873de86a3SLuciano Coelho { 293973de86a3SLuciano Coelho struct ieee80211_local *local = sdata->local; 294073de86a3SLuciano Coelho struct ieee80211_sub_if_data *sdata_iter; 294173de86a3SLuciano Coelho enum nl80211_iftype iftype = sdata->wdev.iftype; 294273de86a3SLuciano Coelho int num[NUM_NL80211_IFTYPES]; 294373de86a3SLuciano Coelho struct ieee80211_chanctx *ctx; 2944b6a55015SLuciano Coelho int num_different_channels = 0; 294573de86a3SLuciano Coelho int total = 1; 294673de86a3SLuciano Coelho 294773de86a3SLuciano Coelho lockdep_assert_held(&local->chanctx_mtx); 294873de86a3SLuciano Coelho 294973de86a3SLuciano Coelho if (WARN_ON(hweight32(radar_detect) > 1)) 295073de86a3SLuciano Coelho return -EINVAL; 295173de86a3SLuciano Coelho 2952b6a55015SLuciano Coelho if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 2953b6a55015SLuciano Coelho !chandef->chan)) 295473de86a3SLuciano Coelho return -EINVAL; 295573de86a3SLuciano Coelho 2956b6a55015SLuciano Coelho if (chandef) 2957b6a55015SLuciano Coelho num_different_channels = 1; 2958b6a55015SLuciano Coelho 295973de86a3SLuciano Coelho if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 296073de86a3SLuciano Coelho return -EINVAL; 296173de86a3SLuciano Coelho 296273de86a3SLuciano Coelho /* Always allow software iftypes */ 296373de86a3SLuciano Coelho if (local->hw.wiphy->software_iftypes & BIT(iftype)) { 296473de86a3SLuciano Coelho if (radar_detect) 296573de86a3SLuciano Coelho return -EINVAL; 296673de86a3SLuciano Coelho return 0; 296773de86a3SLuciano Coelho } 296873de86a3SLuciano Coelho 296973de86a3SLuciano Coelho memset(num, 0, sizeof(num)); 297073de86a3SLuciano Coelho 297173de86a3SLuciano Coelho if (iftype != NL80211_IFTYPE_UNSPECIFIED) 297273de86a3SLuciano Coelho num[iftype] = 1; 297373de86a3SLuciano Coelho 297473de86a3SLuciano Coelho list_for_each_entry(ctx, &local->chanctx_list, list) { 297573de86a3SLuciano Coelho if (ctx->conf.radar_enabled) 297673de86a3SLuciano Coelho radar_detect |= BIT(ctx->conf.def.width); 297773de86a3SLuciano Coelho if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 297873de86a3SLuciano Coelho num_different_channels++; 297973de86a3SLuciano Coelho continue; 298073de86a3SLuciano Coelho } 2981b6a55015SLuciano Coelho if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 298273de86a3SLuciano Coelho cfg80211_chandef_compatible(chandef, 298373de86a3SLuciano Coelho &ctx->conf.def)) 298473de86a3SLuciano Coelho continue; 298573de86a3SLuciano Coelho num_different_channels++; 298673de86a3SLuciano Coelho } 298773de86a3SLuciano Coelho 298873de86a3SLuciano Coelho list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 298973de86a3SLuciano Coelho struct wireless_dev *wdev_iter; 299073de86a3SLuciano Coelho 299173de86a3SLuciano Coelho wdev_iter = &sdata_iter->wdev; 299273de86a3SLuciano Coelho 299373de86a3SLuciano Coelho if (sdata_iter == sdata || 299473de86a3SLuciano Coelho rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL || 299573de86a3SLuciano Coelho local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) 299673de86a3SLuciano Coelho continue; 299773de86a3SLuciano Coelho 299873de86a3SLuciano Coelho num[wdev_iter->iftype]++; 299973de86a3SLuciano Coelho total++; 300073de86a3SLuciano Coelho } 300173de86a3SLuciano Coelho 300273de86a3SLuciano Coelho if (total == 1 && !radar_detect) 300373de86a3SLuciano Coelho return 0; 300473de86a3SLuciano Coelho 300573de86a3SLuciano Coelho return cfg80211_check_combinations(local->hw.wiphy, 300673de86a3SLuciano Coelho num_different_channels, 300773de86a3SLuciano Coelho radar_detect, num); 300873de86a3SLuciano Coelho } 30096fa001bcSMichal Kazior 30106fa001bcSMichal Kazior static void 30116fa001bcSMichal Kazior ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 30126fa001bcSMichal Kazior void *data) 30136fa001bcSMichal Kazior { 30146fa001bcSMichal Kazior u32 *max_num_different_channels = data; 30156fa001bcSMichal Kazior 30166fa001bcSMichal Kazior *max_num_different_channels = max(*max_num_different_channels, 30176fa001bcSMichal Kazior c->num_different_channels); 30186fa001bcSMichal Kazior } 30196fa001bcSMichal Kazior 30206fa001bcSMichal Kazior int ieee80211_max_num_channels(struct ieee80211_local *local) 30216fa001bcSMichal Kazior { 30226fa001bcSMichal Kazior struct ieee80211_sub_if_data *sdata; 30236fa001bcSMichal Kazior int num[NUM_NL80211_IFTYPES] = {}; 30246fa001bcSMichal Kazior struct ieee80211_chanctx *ctx; 30256fa001bcSMichal Kazior int num_different_channels = 0; 30266fa001bcSMichal Kazior u8 radar_detect = 0; 30276fa001bcSMichal Kazior u32 max_num_different_channels = 1; 30286fa001bcSMichal Kazior int err; 30296fa001bcSMichal Kazior 30306fa001bcSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 30316fa001bcSMichal Kazior 30326fa001bcSMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 30336fa001bcSMichal Kazior num_different_channels++; 30346fa001bcSMichal Kazior 30356fa001bcSMichal Kazior if (ctx->conf.radar_enabled) 30366fa001bcSMichal Kazior radar_detect |= BIT(ctx->conf.def.width); 30376fa001bcSMichal Kazior } 30386fa001bcSMichal Kazior 30396fa001bcSMichal Kazior list_for_each_entry_rcu(sdata, &local->interfaces, list) 30406fa001bcSMichal Kazior num[sdata->wdev.iftype]++; 30416fa001bcSMichal Kazior 30426fa001bcSMichal Kazior err = cfg80211_iter_combinations(local->hw.wiphy, 30436fa001bcSMichal Kazior num_different_channels, radar_detect, 30446fa001bcSMichal Kazior num, ieee80211_iter_max_chans, 30456fa001bcSMichal Kazior &max_num_different_channels); 30466fa001bcSMichal Kazior if (err < 0) 30476fa001bcSMichal Kazior return err; 30486fa001bcSMichal Kazior 30496fa001bcSMichal Kazior return max_num_different_channels; 30506fa001bcSMichal Kazior } 3051