1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2c2d1560aSJohannes Berg /* 3c2d1560aSJohannes Berg * Copyright 2002-2005, Instant802 Networks, Inc. 4c2d1560aSJohannes Berg * Copyright 2005-2006, Devicescape Software, Inc. 5c2d1560aSJohannes Berg * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6c2d1560aSJohannes Berg * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 7d98ad83eSJohannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH 8da6a4352SJohannes Berg * Copyright (C) 2015-2017 Intel Deutschland GmbH 923a5f0afSJohannes Berg * Copyright (C) 2018-2022 Intel Corporation 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 439a95371aSLuis R. Rodriguez local = wiphy_priv(wiphy); 449a95371aSLuis R. Rodriguez return &local->hw; 459a95371aSLuis R. Rodriguez } 469a95371aSLuis R. Rodriguez EXPORT_SYMBOL(wiphy_to_ieee80211_hw); 47c2d1560aSJohannes Berg 4809a740ceSThomas Pedersen u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 4909a740ceSThomas Pedersen enum nl80211_iftype type) 5009a740ceSThomas Pedersen { 5109a740ceSThomas Pedersen __le16 fc = hdr->frame_control; 5209a740ceSThomas Pedersen 5309a740ceSThomas Pedersen if (ieee80211_is_data(fc)) { 5409a740ceSThomas Pedersen if (len < 24) /* drop incorrect hdr len (data) */ 5509a740ceSThomas Pedersen return NULL; 5609a740ceSThomas Pedersen 5709a740ceSThomas Pedersen if (ieee80211_has_a4(fc)) 5809a740ceSThomas Pedersen return NULL; 5909a740ceSThomas Pedersen if (ieee80211_has_tods(fc)) 6009a740ceSThomas Pedersen return hdr->addr1; 6109a740ceSThomas Pedersen if (ieee80211_has_fromds(fc)) 6209a740ceSThomas Pedersen return hdr->addr2; 6309a740ceSThomas Pedersen 6409a740ceSThomas Pedersen return hdr->addr3; 6509a740ceSThomas Pedersen } 6609a740ceSThomas Pedersen 6709a740ceSThomas Pedersen if (ieee80211_is_s1g_beacon(fc)) { 6809a740ceSThomas Pedersen struct ieee80211_ext *ext = (void *) hdr; 6909a740ceSThomas Pedersen 7009a740ceSThomas Pedersen return ext->u.s1g_beacon.sa; 7109a740ceSThomas Pedersen } 7209a740ceSThomas Pedersen 7309a740ceSThomas Pedersen if (ieee80211_is_mgmt(fc)) { 7409a740ceSThomas Pedersen if (len < 24) /* drop incorrect hdr len (mgmt) */ 7509a740ceSThomas Pedersen return NULL; 7609a740ceSThomas Pedersen return hdr->addr3; 7709a740ceSThomas Pedersen } 7809a740ceSThomas Pedersen 7909a740ceSThomas Pedersen if (ieee80211_is_ctl(fc)) { 8009a740ceSThomas Pedersen if (ieee80211_is_pspoll(fc)) 8109a740ceSThomas Pedersen return hdr->addr1; 8209a740ceSThomas Pedersen 8309a740ceSThomas Pedersen if (ieee80211_is_back_req(fc)) { 8409a740ceSThomas Pedersen switch (type) { 8509a740ceSThomas Pedersen case NL80211_IFTYPE_STATION: 8609a740ceSThomas Pedersen return hdr->addr2; 8709a740ceSThomas Pedersen case NL80211_IFTYPE_AP: 8809a740ceSThomas Pedersen case NL80211_IFTYPE_AP_VLAN: 8909a740ceSThomas Pedersen return hdr->addr1; 9009a740ceSThomas Pedersen default: 9109a740ceSThomas Pedersen break; /* fall through to the return */ 9209a740ceSThomas Pedersen } 9309a740ceSThomas Pedersen } 9409a740ceSThomas Pedersen } 9509a740ceSThomas Pedersen 9609a740ceSThomas Pedersen return NULL; 9709a740ceSThomas Pedersen } 9809a740ceSThomas Pedersen EXPORT_SYMBOL(ieee80211_get_bssid); 9909a740ceSThomas Pedersen 1005cf121c3SJohannes Berg void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 101c2d1560aSJohannes Berg { 102252b86c4SJohannes Berg struct sk_buff *skb; 1032de8e0d9SJohannes Berg struct ieee80211_hdr *hdr; 104c2d1560aSJohannes Berg 105252b86c4SJohannes Berg skb_queue_walk(&tx->skbs, skb) { 1062de8e0d9SJohannes Berg hdr = (struct ieee80211_hdr *) skb->data; 107c2d1560aSJohannes Berg hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 108252b86c4SJohannes Berg } 109c2d1560aSJohannes Berg } 110c2d1560aSJohannes Berg 11157fbcce3SJohannes Berg int ieee80211_frame_duration(enum nl80211_band band, size_t len, 112438b61b7SSimon Wunderlich int rate, int erp, int short_preamble, 113438b61b7SSimon Wunderlich int shift) 114c2d1560aSJohannes Berg { 115c2d1560aSJohannes Berg int dur; 116c2d1560aSJohannes Berg 117c2d1560aSJohannes Berg /* calculate duration (in microseconds, rounded up to next higher 118c2d1560aSJohannes Berg * integer if it includes a fractional microsecond) to send frame of 119c2d1560aSJohannes Berg * len bytes (does not include FCS) at the given rate. Duration will 120c2d1560aSJohannes Berg * also include SIFS. 121c2d1560aSJohannes Berg * 122c2d1560aSJohannes Berg * rate is in 100 kbps, so divident is multiplied by 10 in the 123c2d1560aSJohannes Berg * DIV_ROUND_UP() operations. 124438b61b7SSimon Wunderlich * 125438b61b7SSimon Wunderlich * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and 126438b61b7SSimon Wunderlich * is assumed to be 0 otherwise. 127c2d1560aSJohannes Berg */ 128c2d1560aSJohannes Berg 12957fbcce3SJohannes Berg if (band == NL80211_BAND_5GHZ || erp) { 130c2d1560aSJohannes Berg /* 131c2d1560aSJohannes Berg * OFDM: 132c2d1560aSJohannes Berg * 133c2d1560aSJohannes Berg * N_DBPS = DATARATE x 4 134c2d1560aSJohannes Berg * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 135c2d1560aSJohannes Berg * (16 = SIGNAL time, 6 = tail bits) 136c2d1560aSJohannes Berg * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 137c2d1560aSJohannes Berg * 138c2d1560aSJohannes Berg * T_SYM = 4 usec 139438b61b7SSimon Wunderlich * 802.11a - 18.5.2: aSIFSTime = 16 usec 140c2d1560aSJohannes Berg * 802.11g - 19.8.4: aSIFSTime = 10 usec + 141c2d1560aSJohannes Berg * signal ext = 6 usec 142c2d1560aSJohannes Berg */ 143c2d1560aSJohannes Berg dur = 16; /* SIFS + signal ext */ 144438b61b7SSimon Wunderlich dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 145438b61b7SSimon Wunderlich dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 146438b61b7SSimon Wunderlich 147438b61b7SSimon Wunderlich /* IEEE 802.11-2012 18.3.2.4: all values above are: 148438b61b7SSimon Wunderlich * * times 4 for 5 MHz 149438b61b7SSimon Wunderlich * * times 2 for 10 MHz 150438b61b7SSimon Wunderlich */ 151438b61b7SSimon Wunderlich dur *= 1 << shift; 1522103dec1SSimon Wunderlich 1532103dec1SSimon Wunderlich /* rates should already consider the channel bandwidth, 1542103dec1SSimon Wunderlich * don't apply divisor again. 1552103dec1SSimon Wunderlich */ 1562103dec1SSimon Wunderlich dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 1572103dec1SSimon Wunderlich 4 * rate); /* T_SYM x N_SYM */ 158c2d1560aSJohannes Berg } else { 159c2d1560aSJohannes Berg /* 160c2d1560aSJohannes Berg * 802.11b or 802.11g with 802.11b compatibility: 161c2d1560aSJohannes Berg * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 162c2d1560aSJohannes Berg * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 163c2d1560aSJohannes Berg * 164c2d1560aSJohannes Berg * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 165c2d1560aSJohannes Berg * aSIFSTime = 10 usec 166c2d1560aSJohannes Berg * aPreambleLength = 144 usec or 72 usec with short preamble 167c2d1560aSJohannes Berg * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 168c2d1560aSJohannes Berg */ 169c2d1560aSJohannes Berg dur = 10; /* aSIFSTime = 10 usec */ 170c2d1560aSJohannes Berg dur += short_preamble ? (72 + 24) : (144 + 48); 171c2d1560aSJohannes Berg 172c2d1560aSJohannes Berg dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 173c2d1560aSJohannes Berg } 174c2d1560aSJohannes Berg 175c2d1560aSJohannes Berg return dur; 176c2d1560aSJohannes Berg } 177c2d1560aSJohannes Berg 178c2d1560aSJohannes Berg /* Exported duration function for driver use */ 17932bfd35dSJohannes Berg __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 18032bfd35dSJohannes Berg struct ieee80211_vif *vif, 18157fbcce3SJohannes Berg enum nl80211_band band, 1828318d78aSJohannes Berg size_t frame_len, 1838318d78aSJohannes Berg struct ieee80211_rate *rate) 184c2d1560aSJohannes Berg { 18525d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 186c2d1560aSJohannes Berg u16 dur; 187438b61b7SSimon Wunderlich int erp, shift = 0; 18825d834e1SJohannes Berg bool short_preamble = false; 189c2d1560aSJohannes Berg 1908318d78aSJohannes Berg erp = 0; 19125d834e1SJohannes Berg if (vif) { 19225d834e1SJohannes Berg sdata = vif_to_sdata(vif); 193bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 19439eac2deSJohannes Berg if (sdata->deflink.operating_11g_mode) 1958318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 196438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 19725d834e1SJohannes Berg } 1988318d78aSJohannes Berg 1994ee73f33SMichal Kazior dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 200438b61b7SSimon Wunderlich short_preamble, shift); 201c2d1560aSJohannes Berg 202c2d1560aSJohannes Berg return cpu_to_le16(dur); 203c2d1560aSJohannes Berg } 204c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_generic_frame_duration); 205c2d1560aSJohannes Berg 20632bfd35dSJohannes Berg __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 20732bfd35dSJohannes Berg struct ieee80211_vif *vif, size_t frame_len, 208e039fa4aSJohannes Berg const struct ieee80211_tx_info *frame_txctl) 209c2d1560aSJohannes Berg { 210c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 211c2d1560aSJohannes Berg struct ieee80211_rate *rate; 21225d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 213471b3efdSJohannes Berg bool short_preamble; 2142103dec1SSimon Wunderlich int erp, shift = 0, bitrate; 215c2d1560aSJohannes Berg u16 dur; 2162e92e6f2SJohannes Berg struct ieee80211_supported_band *sband; 2172e92e6f2SJohannes Berg 2184ee73f33SMichal Kazior sband = local->hw.wiphy->bands[frame_txctl->band]; 219c2d1560aSJohannes Berg 22025d834e1SJohannes Berg short_preamble = false; 2217e9ed188SDaniel Drake 222e039fa4aSJohannes Berg rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 2238318d78aSJohannes Berg 2248318d78aSJohannes Berg erp = 0; 22525d834e1SJohannes Berg if (vif) { 22625d834e1SJohannes Berg sdata = vif_to_sdata(vif); 227bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 22839eac2deSJohannes Berg if (sdata->deflink.operating_11g_mode) 2298318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 230438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 23125d834e1SJohannes Berg } 232c2d1560aSJohannes Berg 2332103dec1SSimon Wunderlich bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 2342103dec1SSimon Wunderlich 235c2d1560aSJohannes Berg /* CTS duration */ 2362103dec1SSimon Wunderlich dur = ieee80211_frame_duration(sband->band, 10, bitrate, 237438b61b7SSimon Wunderlich erp, short_preamble, shift); 238c2d1560aSJohannes Berg /* Data frame duration */ 2392103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 240438b61b7SSimon Wunderlich erp, short_preamble, shift); 241c2d1560aSJohannes Berg /* ACK duration */ 2422103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, 10, bitrate, 243438b61b7SSimon Wunderlich erp, short_preamble, shift); 244c2d1560aSJohannes Berg 245c2d1560aSJohannes Berg return cpu_to_le16(dur); 246c2d1560aSJohannes Berg } 247c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_rts_duration); 248c2d1560aSJohannes Berg 24932bfd35dSJohannes Berg __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 25032bfd35dSJohannes Berg struct ieee80211_vif *vif, 251c2d1560aSJohannes Berg size_t frame_len, 252e039fa4aSJohannes Berg const struct ieee80211_tx_info *frame_txctl) 253c2d1560aSJohannes Berg { 254c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 255c2d1560aSJohannes Berg struct ieee80211_rate *rate; 25625d834e1SJohannes Berg struct ieee80211_sub_if_data *sdata; 257471b3efdSJohannes Berg bool short_preamble; 2582103dec1SSimon Wunderlich int erp, shift = 0, bitrate; 259c2d1560aSJohannes Berg u16 dur; 2602e92e6f2SJohannes Berg struct ieee80211_supported_band *sband; 2612e92e6f2SJohannes Berg 2624ee73f33SMichal Kazior sband = local->hw.wiphy->bands[frame_txctl->band]; 263c2d1560aSJohannes Berg 26425d834e1SJohannes Berg short_preamble = false; 2657e9ed188SDaniel Drake 266e039fa4aSJohannes Berg rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 2678318d78aSJohannes Berg erp = 0; 26825d834e1SJohannes Berg if (vif) { 26925d834e1SJohannes Berg sdata = vif_to_sdata(vif); 270bda3933aSJohannes Berg short_preamble = sdata->vif.bss_conf.use_short_preamble; 27139eac2deSJohannes Berg if (sdata->deflink.operating_11g_mode) 2728318d78aSJohannes Berg erp = rate->flags & IEEE80211_RATE_ERP_G; 273438b61b7SSimon Wunderlich shift = ieee80211_vif_get_shift(vif); 27425d834e1SJohannes Berg } 275c2d1560aSJohannes Berg 2762103dec1SSimon Wunderlich bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 2772103dec1SSimon Wunderlich 278c2d1560aSJohannes Berg /* Data frame duration */ 2792103dec1SSimon Wunderlich dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 280438b61b7SSimon Wunderlich erp, short_preamble, shift); 281e039fa4aSJohannes Berg if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 282c2d1560aSJohannes Berg /* ACK duration */ 2832103dec1SSimon Wunderlich dur += ieee80211_frame_duration(sband->band, 10, bitrate, 284438b61b7SSimon Wunderlich erp, short_preamble, shift); 285c2d1560aSJohannes Berg } 286c2d1560aSJohannes Berg 287c2d1560aSJohannes Berg return cpu_to_le16(dur); 288c2d1560aSJohannes Berg } 289c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_ctstoself_duration); 290c2d1560aSJohannes Berg 29121a5d4c3SManikanta Pubbisetty static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 29221a5d4c3SManikanta Pubbisetty { 29321a5d4c3SManikanta Pubbisetty struct ieee80211_local *local = sdata->local; 29421a5d4c3SManikanta Pubbisetty struct ieee80211_vif *vif = &sdata->vif; 29521a5d4c3SManikanta Pubbisetty struct fq *fq = &local->fq; 29621a5d4c3SManikanta Pubbisetty struct ps_data *ps = NULL; 29721a5d4c3SManikanta Pubbisetty struct txq_info *txqi; 29821a5d4c3SManikanta Pubbisetty struct sta_info *sta; 29921a5d4c3SManikanta Pubbisetty int i; 30021a5d4c3SManikanta Pubbisetty 301d8dec42bSJohannes Berg local_bh_disable(); 302d8dec42bSJohannes Berg spin_lock(&fq->lock); 30321a5d4c3SManikanta Pubbisetty 304527008e5SAlexander Wetzel sdata->vif.txqs_stopped[ac] = false; 305527008e5SAlexander Wetzel 306f856373eSFelix Fietkau if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 307f856373eSFelix Fietkau goto out; 308f856373eSFelix Fietkau 30921a5d4c3SManikanta Pubbisetty if (sdata->vif.type == NL80211_IFTYPE_AP) 31021a5d4c3SManikanta Pubbisetty ps = &sdata->bss->ps; 31121a5d4c3SManikanta Pubbisetty 31221a5d4c3SManikanta Pubbisetty list_for_each_entry_rcu(sta, &local->sta_list, list) { 31321a5d4c3SManikanta Pubbisetty if (sdata != sta->sdata) 31421a5d4c3SManikanta Pubbisetty continue; 31521a5d4c3SManikanta Pubbisetty 31621a5d4c3SManikanta Pubbisetty for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 31721a5d4c3SManikanta Pubbisetty struct ieee80211_txq *txq = sta->sta.txq[i]; 31821a5d4c3SManikanta Pubbisetty 319a5ae3264SErik Stromdahl if (!txq) 320a5ae3264SErik Stromdahl continue; 321a5ae3264SErik Stromdahl 32221a5d4c3SManikanta Pubbisetty txqi = to_txq_info(txq); 32321a5d4c3SManikanta Pubbisetty 32421a5d4c3SManikanta Pubbisetty if (ac != txq->ac) 32521a5d4c3SManikanta Pubbisetty continue; 32621a5d4c3SManikanta Pubbisetty 32721a5d4c3SManikanta Pubbisetty if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, 32821a5d4c3SManikanta Pubbisetty &txqi->flags)) 32921a5d4c3SManikanta Pubbisetty continue; 33021a5d4c3SManikanta Pubbisetty 331d8dec42bSJohannes Berg spin_unlock(&fq->lock); 33221a5d4c3SManikanta Pubbisetty drv_wake_tx_queue(local, txqi); 333d8dec42bSJohannes Berg spin_lock(&fq->lock); 33421a5d4c3SManikanta Pubbisetty } 33521a5d4c3SManikanta Pubbisetty } 33621a5d4c3SManikanta Pubbisetty 33721a5d4c3SManikanta Pubbisetty if (!vif->txq) 33821a5d4c3SManikanta Pubbisetty goto out; 33921a5d4c3SManikanta Pubbisetty 34021a5d4c3SManikanta Pubbisetty txqi = to_txq_info(vif->txq); 34121a5d4c3SManikanta Pubbisetty 34221a5d4c3SManikanta Pubbisetty if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) || 34321a5d4c3SManikanta Pubbisetty (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) 34421a5d4c3SManikanta Pubbisetty goto out; 34521a5d4c3SManikanta Pubbisetty 346d8dec42bSJohannes Berg spin_unlock(&fq->lock); 34721a5d4c3SManikanta Pubbisetty 34821a5d4c3SManikanta Pubbisetty drv_wake_tx_queue(local, txqi); 349d8dec42bSJohannes Berg local_bh_enable(); 35021a5d4c3SManikanta Pubbisetty return; 35121a5d4c3SManikanta Pubbisetty out: 352d8dec42bSJohannes Berg spin_unlock(&fq->lock); 353d8dec42bSJohannes Berg local_bh_enable(); 35421a5d4c3SManikanta Pubbisetty } 35521a5d4c3SManikanta Pubbisetty 356f6c7f03fSEmmanuel Grumbach static void 357f6c7f03fSEmmanuel Grumbach __releases(&local->queue_stop_reason_lock) 358f6c7f03fSEmmanuel Grumbach __acquires(&local->queue_stop_reason_lock) 359f6c7f03fSEmmanuel Grumbach _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 36021a5d4c3SManikanta Pubbisetty { 36121a5d4c3SManikanta Pubbisetty struct ieee80211_sub_if_data *sdata; 36221a5d4c3SManikanta Pubbisetty int n_acs = IEEE80211_NUM_ACS; 36321a5d4c3SManikanta Pubbisetty int i; 36421a5d4c3SManikanta Pubbisetty 36521a5d4c3SManikanta Pubbisetty rcu_read_lock(); 36621a5d4c3SManikanta Pubbisetty 36721a5d4c3SManikanta Pubbisetty if (local->hw.queues < IEEE80211_NUM_ACS) 36821a5d4c3SManikanta Pubbisetty n_acs = 1; 36921a5d4c3SManikanta Pubbisetty 37021a5d4c3SManikanta Pubbisetty for (i = 0; i < local->hw.queues; i++) { 37121a5d4c3SManikanta Pubbisetty if (local->queue_stop_reasons[i]) 37221a5d4c3SManikanta Pubbisetty continue; 37321a5d4c3SManikanta Pubbisetty 374f6c7f03fSEmmanuel Grumbach spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 37521a5d4c3SManikanta Pubbisetty list_for_each_entry_rcu(sdata, &local->interfaces, list) { 37621a5d4c3SManikanta Pubbisetty int ac; 37721a5d4c3SManikanta Pubbisetty 37821a5d4c3SManikanta Pubbisetty for (ac = 0; ac < n_acs; ac++) { 37921a5d4c3SManikanta Pubbisetty int ac_queue = sdata->vif.hw_queue[ac]; 38021a5d4c3SManikanta Pubbisetty 38121a5d4c3SManikanta Pubbisetty if (ac_queue == i || 38221a5d4c3SManikanta Pubbisetty sdata->vif.cab_queue == i) 38321a5d4c3SManikanta Pubbisetty __ieee80211_wake_txqs(sdata, ac); 38421a5d4c3SManikanta Pubbisetty } 38521a5d4c3SManikanta Pubbisetty } 386f6c7f03fSEmmanuel Grumbach spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 38721a5d4c3SManikanta Pubbisetty } 38821a5d4c3SManikanta Pubbisetty 38921a5d4c3SManikanta Pubbisetty rcu_read_unlock(); 39021a5d4c3SManikanta Pubbisetty } 39121a5d4c3SManikanta Pubbisetty 392da1cad73SAllen Pais void ieee80211_wake_txqs(struct tasklet_struct *t) 393f6c7f03fSEmmanuel Grumbach { 394da1cad73SAllen Pais struct ieee80211_local *local = from_tasklet(local, t, 395da1cad73SAllen Pais wake_txqs_tasklet); 396f6c7f03fSEmmanuel Grumbach unsigned long flags; 397f6c7f03fSEmmanuel Grumbach 398f6c7f03fSEmmanuel Grumbach spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 399f6c7f03fSEmmanuel Grumbach _ieee80211_wake_txqs(local, &flags); 400f6c7f03fSEmmanuel Grumbach spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 401f6c7f03fSEmmanuel Grumbach } 402f6c7f03fSEmmanuel Grumbach 4033a25a8c8SJohannes Berg void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) 4043a25a8c8SJohannes Berg { 4053a25a8c8SJohannes Berg struct ieee80211_sub_if_data *sdata; 406a6f38ac3SJohannes Berg int n_acs = IEEE80211_NUM_ACS; 407a6f38ac3SJohannes Berg 40880a83cfcSMichal Kazior if (local->ops->wake_tx_queue) 40980a83cfcSMichal Kazior return; 41080a83cfcSMichal Kazior 411a6f38ac3SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 412a6f38ac3SJohannes Berg n_acs = 1; 4133a25a8c8SJohannes Berg 4143a25a8c8SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 4153a25a8c8SJohannes Berg int ac; 4163a25a8c8SJohannes Berg 417f142c6b9SJohannes Berg if (!sdata->dev) 418f142c6b9SJohannes Berg continue; 419f142c6b9SJohannes Berg 4203a25a8c8SJohannes Berg if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && 4213a25a8c8SJohannes Berg local->queue_stop_reasons[sdata->vif.cab_queue] != 0) 4223a25a8c8SJohannes Berg continue; 4233a25a8c8SJohannes Berg 424a6f38ac3SJohannes Berg for (ac = 0; ac < n_acs; ac++) { 4253a25a8c8SJohannes Berg int ac_queue = sdata->vif.hw_queue[ac]; 4263a25a8c8SJohannes Berg 4273a25a8c8SJohannes Berg if (ac_queue == queue || 4283a25a8c8SJohannes Berg (sdata->vif.cab_queue == queue && 4293a25a8c8SJohannes Berg local->queue_stop_reasons[ac_queue] == 0 && 4303a25a8c8SJohannes Berg skb_queue_empty(&local->pending[ac_queue]))) 4313a25a8c8SJohannes Berg netif_wake_subqueue(sdata->dev, ac); 4323a25a8c8SJohannes Berg } 4333a25a8c8SJohannes Berg } 4343a25a8c8SJohannes Berg } 4353a25a8c8SJohannes Berg 436ce7c9111SKalle Valo static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 437cca07b00SLuciano Coelho enum queue_stop_reason reason, 438f6c7f03fSEmmanuel Grumbach bool refcounted, 439f6c7f03fSEmmanuel Grumbach unsigned long *flags) 440c2d1560aSJohannes Berg { 441c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 442c2d1560aSJohannes Berg 443b5878a2dSJohannes Berg trace_wake_queue(local, queue, reason); 444b5878a2dSJohannes Berg 445e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 44696f5e66eSJohannes Berg return; 44796f5e66eSJohannes Berg 448ada15125SJohannes Berg if (!test_bit(reason, &local->queue_stop_reasons[queue])) 449ada15125SJohannes Berg return; 450ada15125SJohannes Berg 451856142cdSJohannes Berg if (!refcounted) { 452cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason] = 0; 453856142cdSJohannes Berg } else { 454cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason]--; 455856142cdSJohannes Berg if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 456856142cdSJohannes Berg local->q_stop_reasons[queue][reason] = 0; 457856142cdSJohannes Berg } 458cca07b00SLuciano Coelho 459cca07b00SLuciano Coelho if (local->q_stop_reasons[queue][reason] == 0) 460ce7c9111SKalle Valo __clear_bit(reason, &local->queue_stop_reasons[queue]); 461ce7c9111SKalle Valo 462ce7c9111SKalle Valo if (local->queue_stop_reasons[queue] != 0) 463ce7c9111SKalle Valo /* someone still has this queue stopped */ 464ce7c9111SKalle Valo return; 465ce7c9111SKalle Valo 4667236fe29SJohannes Berg if (skb_queue_empty(&local->pending[queue])) { 467cf0277e7SJohannes Berg rcu_read_lock(); 4683a25a8c8SJohannes Berg ieee80211_propagate_queue_wake(local, queue); 469cf0277e7SJohannes Berg rcu_read_unlock(); 4707236fe29SJohannes Berg } else 4717236fe29SJohannes Berg tasklet_schedule(&local->tx_pending_tasklet); 47221a5d4c3SManikanta Pubbisetty 473f6c7f03fSEmmanuel Grumbach /* 474f6c7f03fSEmmanuel Grumbach * Calling _ieee80211_wake_txqs here can be a problem because it may 475f6c7f03fSEmmanuel Grumbach * release queue_stop_reason_lock which has been taken by 476f6c7f03fSEmmanuel Grumbach * __ieee80211_wake_queue's caller. It is certainly not very nice to 477f6c7f03fSEmmanuel Grumbach * release someone's lock, but it is fine because all the callers of 478f6c7f03fSEmmanuel Grumbach * __ieee80211_wake_queue call it right before releasing the lock. 479f6c7f03fSEmmanuel Grumbach */ 480f6c7f03fSEmmanuel Grumbach if (local->ops->wake_tx_queue) { 481f6c7f03fSEmmanuel Grumbach if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) 48221a5d4c3SManikanta Pubbisetty tasklet_schedule(&local->wake_txqs_tasklet); 483f6c7f03fSEmmanuel Grumbach else 484f6c7f03fSEmmanuel Grumbach _ieee80211_wake_txqs(local, flags); 485f6c7f03fSEmmanuel Grumbach } 486c2d1560aSJohannes Berg } 487ce7c9111SKalle Valo 48896f5e66eSJohannes Berg void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 489cca07b00SLuciano Coelho enum queue_stop_reason reason, 490cca07b00SLuciano Coelho bool refcounted) 491ce7c9111SKalle Valo { 492ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 493ce7c9111SKalle Valo unsigned long flags; 494ce7c9111SKalle Valo 495ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 496f6c7f03fSEmmanuel Grumbach __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); 497ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 498ce7c9111SKalle Valo } 499ce7c9111SKalle Valo 500ce7c9111SKalle Valo void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 501ce7c9111SKalle Valo { 502ce7c9111SKalle Valo ieee80211_wake_queue_by_reason(hw, queue, 503cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 504cca07b00SLuciano Coelho false); 505ce7c9111SKalle Valo } 506c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_wake_queue); 507c2d1560aSJohannes Berg 508ce7c9111SKalle Valo static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 509cca07b00SLuciano Coelho enum queue_stop_reason reason, 510cca07b00SLuciano Coelho bool refcounted) 511c2d1560aSJohannes Berg { 512c2d1560aSJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 513cf0277e7SJohannes Berg struct ieee80211_sub_if_data *sdata; 514a6f38ac3SJohannes Berg int n_acs = IEEE80211_NUM_ACS; 515c2d1560aSJohannes Berg 516b5878a2dSJohannes Berg trace_stop_queue(local, queue, reason); 517b5878a2dSJohannes Berg 518e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 51996f5e66eSJohannes Berg return; 52096f5e66eSJohannes Berg 521cca07b00SLuciano Coelho if (!refcounted) 522cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason] = 1; 523cca07b00SLuciano Coelho else 524cca07b00SLuciano Coelho local->q_stop_reasons[queue][reason]++; 525ada15125SJohannes Berg 526cca07b00SLuciano Coelho if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) 527cca07b00SLuciano Coelho return; 528cf0277e7SJohannes Berg 529a6f38ac3SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 530a6f38ac3SJohannes Berg n_acs = 1; 531a6f38ac3SJohannes Berg 532cf0277e7SJohannes Berg rcu_read_lock(); 5333a25a8c8SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 5343a25a8c8SJohannes Berg int ac; 5353a25a8c8SJohannes Berg 536f142c6b9SJohannes Berg if (!sdata->dev) 537f142c6b9SJohannes Berg continue; 538f142c6b9SJohannes Berg 539a6f38ac3SJohannes Berg for (ac = 0; ac < n_acs; ac++) { 5403a25a8c8SJohannes Berg if (sdata->vif.hw_queue[ac] == queue || 54121a5d4c3SManikanta Pubbisetty sdata->vif.cab_queue == queue) { 54221a5d4c3SManikanta Pubbisetty if (!local->ops->wake_tx_queue) { 5433a25a8c8SJohannes Berg netif_stop_subqueue(sdata->dev, ac); 54421a5d4c3SManikanta Pubbisetty continue; 54521a5d4c3SManikanta Pubbisetty } 54621a5d4c3SManikanta Pubbisetty spin_lock(&local->fq.lock); 54721a5d4c3SManikanta Pubbisetty sdata->vif.txqs_stopped[ac] = true; 54821a5d4c3SManikanta Pubbisetty spin_unlock(&local->fq.lock); 54921a5d4c3SManikanta Pubbisetty } 5503a25a8c8SJohannes Berg } 5513a25a8c8SJohannes Berg } 552cf0277e7SJohannes Berg rcu_read_unlock(); 553c2d1560aSJohannes Berg } 554ce7c9111SKalle Valo 55596f5e66eSJohannes Berg void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 556cca07b00SLuciano Coelho enum queue_stop_reason reason, 557cca07b00SLuciano Coelho bool refcounted) 558ce7c9111SKalle Valo { 559ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 560ce7c9111SKalle Valo unsigned long flags; 561ce7c9111SKalle Valo 562ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 563cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, queue, reason, refcounted); 564ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 565ce7c9111SKalle Valo } 566ce7c9111SKalle Valo 567ce7c9111SKalle Valo void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 568ce7c9111SKalle Valo { 569ce7c9111SKalle Valo ieee80211_stop_queue_by_reason(hw, queue, 570cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 571cca07b00SLuciano Coelho false); 572ce7c9111SKalle Valo } 573c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_stop_queue); 574c2d1560aSJohannes Berg 5758f77f384SJohannes Berg void ieee80211_add_pending_skb(struct ieee80211_local *local, 5768f77f384SJohannes Berg struct sk_buff *skb) 5778f77f384SJohannes Berg { 5788f77f384SJohannes Berg struct ieee80211_hw *hw = &local->hw; 5798f77f384SJohannes Berg unsigned long flags; 580a7bc376cSJohannes Berg struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 5813a25a8c8SJohannes Berg int queue = info->hw_queue; 582a7bc376cSJohannes Berg 583a7bc376cSJohannes Berg if (WARN_ON(!info->control.vif)) { 584d4fa14cdSFelix Fietkau ieee80211_free_txskb(&local->hw, skb); 585a7bc376cSJohannes Berg return; 586a7bc376cSJohannes Berg } 5878f77f384SJohannes Berg 5888f77f384SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 589cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 590cca07b00SLuciano Coelho false); 5913b8d81e0SJohannes Berg __skb_queue_tail(&local->pending[queue], skb); 592cca07b00SLuciano Coelho __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 593f6c7f03fSEmmanuel Grumbach false, &flags); 5948f77f384SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 5958f77f384SJohannes Berg } 5968f77f384SJohannes Berg 597e3685e03SJohannes Berg void ieee80211_add_pending_skbs(struct ieee80211_local *local, 598e3685e03SJohannes Berg struct sk_buff_head *skbs) 5998f77f384SJohannes Berg { 6008f77f384SJohannes Berg struct ieee80211_hw *hw = &local->hw; 6018f77f384SJohannes Berg struct sk_buff *skb; 6028f77f384SJohannes Berg unsigned long flags; 603b0b97a8aSJohannes Berg int queue, i; 6048f77f384SJohannes Berg 6058f77f384SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 6068f77f384SJohannes Berg while ((skb = skb_dequeue(skbs))) { 607a7bc376cSJohannes Berg struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 608a7bc376cSJohannes Berg 609a7bc376cSJohannes Berg if (WARN_ON(!info->control.vif)) { 610d4fa14cdSFelix Fietkau ieee80211_free_txskb(&local->hw, skb); 611a7bc376cSJohannes Berg continue; 612a7bc376cSJohannes Berg } 613a7bc376cSJohannes Berg 6143a25a8c8SJohannes Berg queue = info->hw_queue; 6154644ae89SJohannes Berg 6164644ae89SJohannes Berg __ieee80211_stop_queue(hw, queue, 617cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 618cca07b00SLuciano Coelho false); 6194644ae89SJohannes Berg 6203b8d81e0SJohannes Berg __skb_queue_tail(&local->pending[queue], skb); 6218f77f384SJohannes Berg } 6228f77f384SJohannes Berg 6233b8d81e0SJohannes Berg for (i = 0; i < hw->queues; i++) 6248f77f384SJohannes Berg __ieee80211_wake_queue(hw, i, 625cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 626f6c7f03fSEmmanuel Grumbach false, &flags); 6278f77f384SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 6288f77f384SJohannes Berg } 6298f77f384SJohannes Berg 630ce7c9111SKalle Valo void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 631445ea4e8SJohannes Berg unsigned long queues, 632cca07b00SLuciano Coelho enum queue_stop_reason reason, 633cca07b00SLuciano Coelho bool refcounted) 634c2d1560aSJohannes Berg { 635ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 636ce7c9111SKalle Valo unsigned long flags; 637c2d1560aSJohannes Berg int i; 638c2d1560aSJohannes Berg 639ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 640ce7c9111SKalle Valo 641445ea4e8SJohannes Berg for_each_set_bit(i, &queues, hw->queues) 642cca07b00SLuciano Coelho __ieee80211_stop_queue(hw, i, reason, refcounted); 643ce7c9111SKalle Valo 644ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 645ce7c9111SKalle Valo } 646ce7c9111SKalle Valo 647ce7c9111SKalle Valo void ieee80211_stop_queues(struct ieee80211_hw *hw) 648ce7c9111SKalle Valo { 649445ea4e8SJohannes Berg ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 650cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 651cca07b00SLuciano Coelho false); 652c2d1560aSJohannes Berg } 653c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_stop_queues); 654c2d1560aSJohannes Berg 65592ab8535STomas Winkler int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 65692ab8535STomas Winkler { 65792ab8535STomas Winkler struct ieee80211_local *local = hw_to_local(hw); 6583b8d81e0SJohannes Berg unsigned long flags; 6593b8d81e0SJohannes Berg int ret; 66096f5e66eSJohannes Berg 661e4e72fb4SJohannes Berg if (WARN_ON(queue >= hw->queues)) 66296f5e66eSJohannes Berg return true; 66396f5e66eSJohannes Berg 6643b8d81e0SJohannes Berg spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 6652419ea14SThomas Pedersen ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 6662419ea14SThomas Pedersen &local->queue_stop_reasons[queue]); 6673b8d81e0SJohannes Berg spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 6683b8d81e0SJohannes Berg return ret; 66992ab8535STomas Winkler } 67092ab8535STomas Winkler EXPORT_SYMBOL(ieee80211_queue_stopped); 67192ab8535STomas Winkler 672ce7c9111SKalle Valo void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 673445ea4e8SJohannes Berg unsigned long queues, 674cca07b00SLuciano Coelho enum queue_stop_reason reason, 675cca07b00SLuciano Coelho bool refcounted) 676c2d1560aSJohannes Berg { 677ce7c9111SKalle Valo struct ieee80211_local *local = hw_to_local(hw); 678ce7c9111SKalle Valo unsigned long flags; 679c2d1560aSJohannes Berg int i; 680c2d1560aSJohannes Berg 681ce7c9111SKalle Valo spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 682ce7c9111SKalle Valo 683445ea4e8SJohannes Berg for_each_set_bit(i, &queues, hw->queues) 684f6c7f03fSEmmanuel Grumbach __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 685ce7c9111SKalle Valo 686ce7c9111SKalle Valo spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 687ce7c9111SKalle Valo } 688ce7c9111SKalle Valo 689ce7c9111SKalle Valo void ieee80211_wake_queues(struct ieee80211_hw *hw) 690ce7c9111SKalle Valo { 691445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 692cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_DRIVER, 693cca07b00SLuciano Coelho false); 694c2d1560aSJohannes Berg } 695c2d1560aSJohannes Berg EXPORT_SYMBOL(ieee80211_wake_queues); 696dabeb344SJohannes Berg 69726da23b6SLuciano Coelho static unsigned int 69826da23b6SLuciano Coelho ieee80211_get_vif_queues(struct ieee80211_local *local, 69939ecc01dSJohannes Berg struct ieee80211_sub_if_data *sdata) 70039ecc01dSJohannes Berg { 70126da23b6SLuciano Coelho unsigned int queues; 70239ecc01dSJohannes Berg 70330686bf7SJohannes Berg if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 70439ecc01dSJohannes Berg int ac; 70539ecc01dSJohannes Berg 70639ecc01dSJohannes Berg queues = 0; 70739ecc01dSJohannes Berg 70839ecc01dSJohannes Berg for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 70939ecc01dSJohannes Berg queues |= BIT(sdata->vif.hw_queue[ac]); 71039ecc01dSJohannes Berg if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 71139ecc01dSJohannes Berg queues |= BIT(sdata->vif.cab_queue); 71239ecc01dSJohannes Berg } else { 71339ecc01dSJohannes Berg /* all queues */ 71439ecc01dSJohannes Berg queues = BIT(local->hw.queues) - 1; 71539ecc01dSJohannes Berg } 71639ecc01dSJohannes Berg 71726da23b6SLuciano Coelho return queues; 71826da23b6SLuciano Coelho } 71926da23b6SLuciano Coelho 7204f9610d5SLiad Kaufman void __ieee80211_flush_queues(struct ieee80211_local *local, 7214f9610d5SLiad Kaufman struct ieee80211_sub_if_data *sdata, 7223b24f4c6SEmmanuel Grumbach unsigned int queues, bool drop) 72326da23b6SLuciano Coelho { 72426da23b6SLuciano Coelho if (!local->ops->flush) 72526da23b6SLuciano Coelho return; 72626da23b6SLuciano Coelho 7274f9610d5SLiad Kaufman /* 7284f9610d5SLiad Kaufman * If no queue was set, or if the HW doesn't support 7294f9610d5SLiad Kaufman * IEEE80211_HW_QUEUE_CONTROL - flush all queues 7304f9610d5SLiad Kaufman */ 73130686bf7SJohannes Berg if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 73226da23b6SLuciano Coelho queues = ieee80211_get_vif_queues(local, sdata); 73326da23b6SLuciano Coelho 73459f48fe2SLuciano Coelho ieee80211_stop_queues_by_reason(&local->hw, queues, 735cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_FLUSH, 736cca07b00SLuciano Coelho false); 737445ea4e8SJohannes Berg 7383b24f4c6SEmmanuel Grumbach drv_flush(local, sdata, queues, drop); 739445ea4e8SJohannes Berg 74059f48fe2SLuciano Coelho ieee80211_wake_queues_by_reason(&local->hw, queues, 741cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_FLUSH, 742cca07b00SLuciano Coelho false); 74339ecc01dSJohannes Berg } 74439ecc01dSJohannes Berg 7454f9610d5SLiad Kaufman void ieee80211_flush_queues(struct ieee80211_local *local, 7463b24f4c6SEmmanuel Grumbach struct ieee80211_sub_if_data *sdata, bool drop) 7474f9610d5SLiad Kaufman { 7483b24f4c6SEmmanuel Grumbach __ieee80211_flush_queues(local, sdata, 0, drop); 7494f9610d5SLiad Kaufman } 7504f9610d5SLiad Kaufman 75126da23b6SLuciano Coelho void ieee80211_stop_vif_queues(struct ieee80211_local *local, 75226da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata, 75326da23b6SLuciano Coelho enum queue_stop_reason reason) 75426da23b6SLuciano Coelho { 75526da23b6SLuciano Coelho ieee80211_stop_queues_by_reason(&local->hw, 75626da23b6SLuciano Coelho ieee80211_get_vif_queues(local, sdata), 75726da23b6SLuciano Coelho reason, true); 75826da23b6SLuciano Coelho } 75926da23b6SLuciano Coelho 76026da23b6SLuciano Coelho void ieee80211_wake_vif_queues(struct ieee80211_local *local, 76126da23b6SLuciano Coelho struct ieee80211_sub_if_data *sdata, 76226da23b6SLuciano Coelho enum queue_stop_reason reason) 76326da23b6SLuciano Coelho { 76426da23b6SLuciano Coelho ieee80211_wake_queues_by_reason(&local->hw, 76526da23b6SLuciano Coelho ieee80211_get_vif_queues(local, sdata), 76626da23b6SLuciano Coelho reason, true); 76726da23b6SLuciano Coelho } 76826da23b6SLuciano Coelho 7693384d757SArik Nemtsov static void __iterate_interfaces(struct ieee80211_local *local, 770c7c71066SJohannes Berg u32 iter_flags, 771dabeb344SJohannes Berg void (*iterator)(void *data, u8 *mac, 77232bfd35dSJohannes Berg struct ieee80211_vif *vif), 773dabeb344SJohannes Berg void *data) 774dabeb344SJohannes Berg { 775dabeb344SJohannes Berg struct ieee80211_sub_if_data *sdata; 7763384d757SArik Nemtsov bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 777dabeb344SJohannes Berg 778e38bad47SJohannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) { 77951fb61e7SJohannes Berg switch (sdata->vif.type) { 78005c914feSJohannes Berg case NL80211_IFTYPE_MONITOR: 781d8212184SAviya Erenfeld if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) 78231eba5bcSFelix Fietkau continue; 78331eba5bcSFelix Fietkau break; 78405c914feSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 785dabeb344SJohannes Berg continue; 7862ca27bcfSJohannes Berg default: 787dabeb344SJohannes Berg break; 788dabeb344SJohannes Berg } 7898b2c9824SJohannes Berg if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 7903384d757SArik Nemtsov active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 7918b2c9824SJohannes Berg continue; 792265a0708SBen Greear if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 793265a0708SBen Greear !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 794265a0708SBen Greear continue; 7953384d757SArik Nemtsov if (ieee80211_sdata_running(sdata) || !active_only) 79647846c9bSJohannes Berg iterator(data, sdata->vif.addr, 79732bfd35dSJohannes Berg &sdata->vif); 798dabeb344SJohannes Berg } 799e38bad47SJohannes Berg 800c7c71066SJohannes Berg sdata = rcu_dereference_check(local->monitor_sdata, 801c7c71066SJohannes Berg lockdep_is_held(&local->iflist_mtx) || 8026dd23603SJohannes Berg lockdep_is_held(&local->hw.wiphy->mtx)); 8038b2c9824SJohannes Berg if (sdata && 8043384d757SArik Nemtsov (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 8058b2c9824SJohannes Berg sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 806685fb72bSJohannes Berg iterator(data, sdata->vif.addr, &sdata->vif); 807c7c71066SJohannes Berg } 808685fb72bSJohannes Berg 8093384d757SArik Nemtsov void ieee80211_iterate_interfaces( 810c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 811c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 812c7c71066SJohannes Berg struct ieee80211_vif *vif), 813c7c71066SJohannes Berg void *data) 814c7c71066SJohannes Berg { 815c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 816c7c71066SJohannes Berg 817c7c71066SJohannes Berg mutex_lock(&local->iflist_mtx); 8183384d757SArik Nemtsov __iterate_interfaces(local, iter_flags, iterator, data); 819c7c71066SJohannes Berg mutex_unlock(&local->iflist_mtx); 820c7c71066SJohannes Berg } 8213384d757SArik Nemtsov EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 822c7c71066SJohannes Berg 823c7c71066SJohannes Berg void ieee80211_iterate_active_interfaces_atomic( 824c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 825c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 826c7c71066SJohannes Berg struct ieee80211_vif *vif), 827c7c71066SJohannes Berg void *data) 828c7c71066SJohannes Berg { 829c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 830c7c71066SJohannes Berg 831c7c71066SJohannes Berg rcu_read_lock(); 8323384d757SArik Nemtsov __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 8333384d757SArik Nemtsov iterator, data); 834e38bad47SJohannes Berg rcu_read_unlock(); 835dabeb344SJohannes Berg } 8362f561febSIvo van Doorn EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 83737ffc8daSJohannes Berg 838a05829a7SJohannes Berg void ieee80211_iterate_active_interfaces_mtx( 839c7c71066SJohannes Berg struct ieee80211_hw *hw, u32 iter_flags, 840c7c71066SJohannes Berg void (*iterator)(void *data, u8 *mac, 841c7c71066SJohannes Berg struct ieee80211_vif *vif), 842c7c71066SJohannes Berg void *data) 843c7c71066SJohannes Berg { 844c7c71066SJohannes Berg struct ieee80211_local *local = hw_to_local(hw); 845c7c71066SJohannes Berg 846a05829a7SJohannes Berg lockdep_assert_wiphy(hw->wiphy); 847c7c71066SJohannes Berg 8483384d757SArik Nemtsov __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 8493384d757SArik Nemtsov iterator, data); 850c7c71066SJohannes Berg } 851a05829a7SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx); 852c7c71066SJohannes Berg 8530fc1e049SArik Nemtsov static void __iterate_stations(struct ieee80211_local *local, 8540fc1e049SArik Nemtsov void (*iterator)(void *data, 8550fc1e049SArik Nemtsov struct ieee80211_sta *sta), 8560fc1e049SArik Nemtsov void *data) 8570fc1e049SArik Nemtsov { 8580fc1e049SArik Nemtsov struct sta_info *sta; 8590fc1e049SArik Nemtsov 8600fc1e049SArik Nemtsov list_for_each_entry_rcu(sta, &local->sta_list, list) { 8610fc1e049SArik Nemtsov if (!sta->uploaded) 8620fc1e049SArik Nemtsov continue; 8630fc1e049SArik Nemtsov 8640fc1e049SArik Nemtsov iterator(data, &sta->sta); 8650fc1e049SArik Nemtsov } 8660fc1e049SArik Nemtsov } 8670fc1e049SArik Nemtsov 868acb99b9bSMartin Blumenstingl void ieee80211_iterate_stations(struct ieee80211_hw *hw, 869acb99b9bSMartin Blumenstingl void (*iterator)(void *data, 870acb99b9bSMartin Blumenstingl struct ieee80211_sta *sta), 871acb99b9bSMartin Blumenstingl void *data) 872acb99b9bSMartin Blumenstingl { 873acb99b9bSMartin Blumenstingl struct ieee80211_local *local = hw_to_local(hw); 874acb99b9bSMartin Blumenstingl 875acb99b9bSMartin Blumenstingl mutex_lock(&local->sta_mtx); 876acb99b9bSMartin Blumenstingl __iterate_stations(local, iterator, data); 877acb99b9bSMartin Blumenstingl mutex_unlock(&local->sta_mtx); 878acb99b9bSMartin Blumenstingl } 879acb99b9bSMartin Blumenstingl EXPORT_SYMBOL_GPL(ieee80211_iterate_stations); 880acb99b9bSMartin Blumenstingl 8810fc1e049SArik Nemtsov void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 8820fc1e049SArik Nemtsov void (*iterator)(void *data, 8830fc1e049SArik Nemtsov struct ieee80211_sta *sta), 8840fc1e049SArik Nemtsov void *data) 8850fc1e049SArik Nemtsov { 8860fc1e049SArik Nemtsov struct ieee80211_local *local = hw_to_local(hw); 8870fc1e049SArik Nemtsov 8880fc1e049SArik Nemtsov rcu_read_lock(); 8890fc1e049SArik Nemtsov __iterate_stations(local, iterator, data); 8900fc1e049SArik Nemtsov rcu_read_unlock(); 8910fc1e049SArik Nemtsov } 8920fc1e049SArik Nemtsov EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 8930fc1e049SArik Nemtsov 894ad7e718cSJohannes Berg struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 895ad7e718cSJohannes Berg { 896ad7e718cSJohannes Berg struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 897ad7e718cSJohannes Berg 898ad7e718cSJohannes Berg if (!ieee80211_sdata_running(sdata) || 899ad7e718cSJohannes Berg !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 900ad7e718cSJohannes Berg return NULL; 901ad7e718cSJohannes Berg return &sdata->vif; 902ad7e718cSJohannes Berg } 903ad7e718cSJohannes Berg EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 904ad7e718cSJohannes Berg 905dc5a1ad7SEmmanuel Grumbach struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 906dc5a1ad7SEmmanuel Grumbach { 9076513e98eSJohannes Berg if (!vif) 9086513e98eSJohannes Berg return NULL; 9096513e98eSJohannes Berg 910f30386a8SEmmanuel Grumbach return &vif_to_sdata(vif)->wdev; 911dc5a1ad7SEmmanuel Grumbach } 912dc5a1ad7SEmmanuel Grumbach EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 913dc5a1ad7SEmmanuel Grumbach 91442935ecaSLuis R. Rodriguez /* 91542935ecaSLuis R. Rodriguez * Nothing should have been stuffed into the workqueue during 9164afaff17SEmmanuel Grumbach * the suspend->resume cycle. Since we can't check each caller 9174afaff17SEmmanuel Grumbach * of this function if we are already quiescing / suspended, 9184afaff17SEmmanuel Grumbach * check here and don't WARN since this can actually happen when 9194afaff17SEmmanuel Grumbach * the rx path (for example) is racing against __ieee80211_suspend 9204afaff17SEmmanuel Grumbach * and suspending / quiescing was set after the rx path checked 9214afaff17SEmmanuel Grumbach * them. 92242935ecaSLuis R. Rodriguez */ 92342935ecaSLuis R. Rodriguez static bool ieee80211_can_queue_work(struct ieee80211_local *local) 92442935ecaSLuis R. Rodriguez { 9254afaff17SEmmanuel Grumbach if (local->quiescing || (local->suspended && !local->resuming)) { 9264afaff17SEmmanuel Grumbach pr_warn("queueing ieee80211 work while going to suspend\n"); 92742935ecaSLuis R. Rodriguez return false; 9284afaff17SEmmanuel Grumbach } 92942935ecaSLuis R. Rodriguez 93042935ecaSLuis R. Rodriguez return true; 93142935ecaSLuis R. Rodriguez } 93242935ecaSLuis R. Rodriguez 93342935ecaSLuis R. Rodriguez void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 93442935ecaSLuis R. Rodriguez { 93542935ecaSLuis R. Rodriguez struct ieee80211_local *local = hw_to_local(hw); 93642935ecaSLuis R. Rodriguez 93742935ecaSLuis R. Rodriguez if (!ieee80211_can_queue_work(local)) 93842935ecaSLuis R. Rodriguez return; 93942935ecaSLuis R. Rodriguez 94042935ecaSLuis R. Rodriguez queue_work(local->workqueue, work); 94142935ecaSLuis R. Rodriguez } 94242935ecaSLuis R. Rodriguez EXPORT_SYMBOL(ieee80211_queue_work); 94342935ecaSLuis R. Rodriguez 94442935ecaSLuis R. Rodriguez void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 94542935ecaSLuis R. Rodriguez struct delayed_work *dwork, 94642935ecaSLuis R. Rodriguez unsigned long delay) 94742935ecaSLuis R. Rodriguez { 94842935ecaSLuis R. Rodriguez struct ieee80211_local *local = hw_to_local(hw); 94942935ecaSLuis R. Rodriguez 95042935ecaSLuis R. Rodriguez if (!ieee80211_can_queue_work(local)) 95142935ecaSLuis R. Rodriguez return; 95242935ecaSLuis R. Rodriguez 95342935ecaSLuis R. Rodriguez queue_delayed_work(local->workqueue, dwork, delay); 95442935ecaSLuis R. Rodriguez } 95542935ecaSLuis R. Rodriguez EXPORT_SYMBOL(ieee80211_queue_delayed_work); 95642935ecaSLuis R. Rodriguez 957ea5cba26SJohannes Berg static void 958ea5cba26SJohannes Berg ieee80211_parse_extension_element(u32 *crc, 959e4d005b8SJohannes Berg const struct element *elem, 960ea5cba26SJohannes Berg struct ieee802_11_elems *elems, 961ea5cba26SJohannes Berg struct ieee80211_elems_parse_params *params) 962e4d005b8SJohannes Berg { 963e4d005b8SJohannes Berg const void *data = elem->data + 1; 964768c0b19SJohannes Berg u8 len; 965768c0b19SJohannes Berg 966768c0b19SJohannes Berg if (!elem->datalen) 967768c0b19SJohannes Berg return; 968768c0b19SJohannes Berg 969768c0b19SJohannes Berg len = elem->datalen - 1; 970e4d005b8SJohannes Berg 971e4d005b8SJohannes Berg switch (elem->data[0]) { 972e4d005b8SJohannes Berg case WLAN_EID_EXT_HE_MU_EDCA: 973652e8363SJohannes Berg if (len >= sizeof(*elems->mu_edca_param_set)) { 974e4d005b8SJohannes Berg elems->mu_edca_param_set = data; 975e4d005b8SJohannes Berg if (crc) 976e4d005b8SJohannes Berg *crc = crc32_be(*crc, (void *)elem, 977e4d005b8SJohannes Berg elem->datalen + 2); 978e4d005b8SJohannes Berg } 979e4d005b8SJohannes Berg break; 980e4d005b8SJohannes Berg case WLAN_EID_EXT_HE_CAPABILITY: 981bd4e4d62SJohannes Berg if (ieee80211_he_capa_size_ok(data, len)) { 982e4d005b8SJohannes Berg elems->he_cap = data; 983e4d005b8SJohannes Berg elems->he_cap_len = len; 984bd4e4d62SJohannes Berg } 985e4d005b8SJohannes Berg break; 986e4d005b8SJohannes Berg case WLAN_EID_EXT_HE_OPERATION: 987e4d005b8SJohannes Berg if (len >= sizeof(*elems->he_operation) && 9880f7e90faSBrian Norris len >= ieee80211_he_oper_size(data) - 1) { 989660d81daSJohannes Berg if (crc) 990660d81daSJohannes Berg *crc = crc32_be(*crc, (void *)elem, 991660d81daSJohannes Berg elem->datalen + 2); 992e4d005b8SJohannes Berg elems->he_operation = data; 993660d81daSJohannes Berg } 994e4d005b8SJohannes Berg break; 995e4d005b8SJohannes Berg case WLAN_EID_EXT_UORA: 996652e8363SJohannes Berg if (len >= 1) 997e4d005b8SJohannes Berg elems->uora_element = data; 998e4d005b8SJohannes Berg break; 999e4d005b8SJohannes Berg case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME: 1000e4d005b8SJohannes Berg if (len == 3) 1001e4d005b8SJohannes Berg elems->max_channel_switch_time = data; 1002e4d005b8SJohannes Berg break; 1003e4d005b8SJohannes Berg case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION: 1004652e8363SJohannes Berg if (len >= sizeof(*elems->mbssid_config_ie)) 1005e4d005b8SJohannes Berg elems->mbssid_config_ie = data; 1006e4d005b8SJohannes Berg break; 1007e4d005b8SJohannes Berg case WLAN_EID_EXT_HE_SPR: 1008e4d005b8SJohannes Berg if (len >= sizeof(*elems->he_spr) && 1009e4d005b8SJohannes Berg len >= ieee80211_he_spr_size(data)) 1010e4d005b8SJohannes Berg elems->he_spr = data; 1011e4d005b8SJohannes Berg break; 1012a6cf28e0SRajkumar Manoharan case WLAN_EID_EXT_HE_6GHZ_CAPA: 1013652e8363SJohannes Berg if (len >= sizeof(*elems->he_6ghz_capa)) 1014a6cf28e0SRajkumar Manoharan elems->he_6ghz_capa = data; 1015a6cf28e0SRajkumar Manoharan break; 1016f0e6bea8SIlan Peer case WLAN_EID_EXT_EHT_CAPABILITY: 1017f0e6bea8SIlan Peer if (ieee80211_eht_capa_size_ok(elems->he_cap, 1018ea5cba26SJohannes Berg data, len, 1019ea5cba26SJohannes Berg params->from_ap)) { 1020f0e6bea8SIlan Peer elems->eht_cap = data; 1021f0e6bea8SIlan Peer elems->eht_cap_len = len; 1022f0e6bea8SIlan Peer } 1023f0e6bea8SIlan Peer break; 1024f0e6bea8SIlan Peer case WLAN_EID_EXT_EHT_OPERATION: 1025f0e6bea8SIlan Peer if (ieee80211_eht_oper_size_ok(data, len)) 1026f0e6bea8SIlan Peer elems->eht_operation = data; 1027f0e6bea8SIlan Peer break; 1028425f4b5fSJohannes Berg case WLAN_EID_EXT_EHT_MULTI_LINK: 1029425f4b5fSJohannes Berg if (ieee80211_mle_size_ok(data, len)) 1030425f4b5fSJohannes Berg elems->multi_link = (void *)data; 1031425f4b5fSJohannes Berg break; 1032e4d005b8SJohannes Berg } 1033e4d005b8SJohannes Berg } 1034e4d005b8SJohannes Berg 103578ac51f8SSara Sharon static u32 1036fd17bf04SJohannes Berg _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params, 1037dd76986bSJohannes Berg struct ieee802_11_elems *elems, 1038671042a4SSara Sharon const struct element *check_inherit) 1039dd76986bSJohannes Berg { 1040671042a4SSara Sharon const struct element *elem; 1041fd17bf04SJohannes Berg bool calc_crc = params->filter != 0; 1042fcff4f10SPaul Stewart DECLARE_BITMAP(seen_elems, 256); 1043fd17bf04SJohannes Berg u32 crc = params->crc; 1044b2e506bfSJohannes Berg const u8 *ie; 1045dd76986bSJohannes Berg 1046fcff4f10SPaul Stewart bitmap_zero(seen_elems, 256); 1047dd76986bSJohannes Berg 1048fd17bf04SJohannes Berg for_each_element(elem, params->start, params->len) { 1049fcff4f10SPaul Stewart bool elem_parse_failed; 1050c17e28d1SJohannes Berg u8 id = elem->id; 1051c17e28d1SJohannes Berg u8 elen = elem->datalen; 1052c17e28d1SJohannes Berg const u8 *pos = elem->data; 1053fcff4f10SPaul Stewart 1054671042a4SSara Sharon if (check_inherit && 1055671042a4SSara Sharon !cfg80211_is_element_inherited(elem, 1056671042a4SSara Sharon check_inherit)) 1057671042a4SSara Sharon continue; 1058671042a4SSara Sharon 10599690fb16SJohannes Berg switch (id) { 10609690fb16SJohannes Berg case WLAN_EID_SSID: 10619690fb16SJohannes Berg case WLAN_EID_SUPP_RATES: 10629690fb16SJohannes Berg case WLAN_EID_FH_PARAMS: 10639690fb16SJohannes Berg case WLAN_EID_DS_PARAMS: 10649690fb16SJohannes Berg case WLAN_EID_CF_PARAMS: 10659690fb16SJohannes Berg case WLAN_EID_TIM: 10669690fb16SJohannes Berg case WLAN_EID_IBSS_PARAMS: 10679690fb16SJohannes Berg case WLAN_EID_CHALLENGE: 10689690fb16SJohannes Berg case WLAN_EID_RSN: 10699690fb16SJohannes Berg case WLAN_EID_ERP_INFO: 10709690fb16SJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 10719690fb16SJohannes Berg case WLAN_EID_HT_CAPABILITY: 10729690fb16SJohannes Berg case WLAN_EID_HT_OPERATION: 10739690fb16SJohannes Berg case WLAN_EID_VHT_CAPABILITY: 10749690fb16SJohannes Berg case WLAN_EID_VHT_OPERATION: 10759690fb16SJohannes Berg case WLAN_EID_MESH_ID: 10769690fb16SJohannes Berg case WLAN_EID_MESH_CONFIG: 10779690fb16SJohannes Berg case WLAN_EID_PEER_MGMT: 10789690fb16SJohannes Berg case WLAN_EID_PREQ: 10799690fb16SJohannes Berg case WLAN_EID_PREP: 10809690fb16SJohannes Berg case WLAN_EID_PERR: 10819690fb16SJohannes Berg case WLAN_EID_RANN: 10829690fb16SJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 10839690fb16SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 10849690fb16SJohannes Berg case WLAN_EID_COUNTRY: 10859690fb16SJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 10869690fb16SJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 108785220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 1088b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 10898f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 10909041c1faSArik Nemtsov case WLAN_EID_EXT_CAPABILITY: 109153837584SArik Nemtsov case WLAN_EID_CHAN_SWITCH_TIMING: 109253837584SArik Nemtsov case WLAN_EID_LINK_ID: 1093e38a017bSAvraham Stern case WLAN_EID_BSS_MAX_IDLE_PERIOD: 1094c0058df7SShaul Triebitz case WLAN_EID_RSNX: 1095cd418ba6SThomas Pedersen case WLAN_EID_S1G_BCN_COMPAT: 1096cd418ba6SThomas Pedersen case WLAN_EID_S1G_CAPABILITIES: 1097cd418ba6SThomas Pedersen case WLAN_EID_S1G_OPERATION: 10981d00ce80SThomas Pedersen case WLAN_EID_AID_RESPONSE: 1099cd418ba6SThomas Pedersen case WLAN_EID_S1G_SHORT_BCN_INTERVAL: 1100b2e506bfSJohannes Berg /* 1101b2e506bfSJohannes Berg * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible 1102b2e506bfSJohannes Berg * that if the content gets bigger it might be needed more than once 1103b2e506bfSJohannes Berg */ 11049690fb16SJohannes Berg if (test_bit(id, seen_elems)) { 1105fcff4f10SPaul Stewart elems->parse_error = true; 1106fcff4f10SPaul Stewart continue; 1107fcff4f10SPaul Stewart } 11089690fb16SJohannes Berg break; 11099690fb16SJohannes Berg } 1110dd76986bSJohannes Berg 1111fd17bf04SJohannes Berg if (calc_crc && id < 64 && (params->filter & (1ULL << id))) 1112dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 1113dd76986bSJohannes Berg 1114fcff4f10SPaul Stewart elem_parse_failed = false; 1115fcff4f10SPaul Stewart 1116dd76986bSJohannes Berg switch (id) { 111753837584SArik Nemtsov case WLAN_EID_LINK_ID: 1118652e8363SJohannes Berg if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) { 111953837584SArik Nemtsov elem_parse_failed = true; 112053837584SArik Nemtsov break; 112153837584SArik Nemtsov } 112253837584SArik Nemtsov elems->lnk_id = (void *)(pos - 2); 112353837584SArik Nemtsov break; 112453837584SArik Nemtsov case WLAN_EID_CHAN_SWITCH_TIMING: 1125652e8363SJohannes Berg if (elen < sizeof(struct ieee80211_ch_switch_timing)) { 112653837584SArik Nemtsov elem_parse_failed = true; 112753837584SArik Nemtsov break; 112853837584SArik Nemtsov } 112953837584SArik Nemtsov elems->ch_sw_timing = (void *)pos; 113053837584SArik Nemtsov break; 11319041c1faSArik Nemtsov case WLAN_EID_EXT_CAPABILITY: 11329041c1faSArik Nemtsov elems->ext_capab = pos; 11339041c1faSArik Nemtsov elems->ext_capab_len = elen; 11349041c1faSArik Nemtsov break; 1135dd76986bSJohannes Berg case WLAN_EID_SSID: 1136dd76986bSJohannes Berg elems->ssid = pos; 1137dd76986bSJohannes Berg elems->ssid_len = elen; 1138dd76986bSJohannes Berg break; 1139dd76986bSJohannes Berg case WLAN_EID_SUPP_RATES: 1140dd76986bSJohannes Berg elems->supp_rates = pos; 1141dd76986bSJohannes Berg elems->supp_rates_len = elen; 1142dd76986bSJohannes Berg break; 1143dd76986bSJohannes Berg case WLAN_EID_DS_PARAMS: 11441cd8e88eSJohannes Berg if (elen >= 1) 1145dd76986bSJohannes Berg elems->ds_params = pos; 11461cd8e88eSJohannes Berg else 11471cd8e88eSJohannes Berg elem_parse_failed = true; 1148dd76986bSJohannes Berg break; 1149dd76986bSJohannes Berg case WLAN_EID_TIM: 1150dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_tim_ie)) { 1151dd76986bSJohannes Berg elems->tim = (void *)pos; 1152dd76986bSJohannes Berg elems->tim_len = elen; 1153fcff4f10SPaul Stewart } else 1154fcff4f10SPaul Stewart elem_parse_failed = true; 1155dd76986bSJohannes Berg break; 1156dd76986bSJohannes Berg case WLAN_EID_VENDOR_SPECIFIC: 1157dd76986bSJohannes Berg if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && 1158dd76986bSJohannes Berg pos[2] == 0xf2) { 1159dd76986bSJohannes Berg /* Microsoft OUI (00:50:F2) */ 1160dd76986bSJohannes Berg 1161dd76986bSJohannes Berg if (calc_crc) 1162dd76986bSJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 1163dd76986bSJohannes Berg 1164441a33baSJohannes Berg if (elen >= 5 && pos[3] == 2) { 1165dd76986bSJohannes Berg /* OUI Type 2 - WMM IE */ 1166dd76986bSJohannes Berg if (pos[4] == 0) { 1167dd76986bSJohannes Berg elems->wmm_info = pos; 1168dd76986bSJohannes Berg elems->wmm_info_len = elen; 1169dd76986bSJohannes Berg } else if (pos[4] == 1) { 1170dd76986bSJohannes Berg elems->wmm_param = pos; 1171dd76986bSJohannes Berg elems->wmm_param_len = elen; 1172dd76986bSJohannes Berg } 1173dd76986bSJohannes Berg } 1174dd76986bSJohannes Berg } 1175dd76986bSJohannes Berg break; 1176dd76986bSJohannes Berg case WLAN_EID_RSN: 1177dd76986bSJohannes Berg elems->rsn = pos; 1178dd76986bSJohannes Berg elems->rsn_len = elen; 1179dd76986bSJohannes Berg break; 1180dd76986bSJohannes Berg case WLAN_EID_ERP_INFO: 11811946bed9SJohannes Berg if (elen >= 1) 1182dd76986bSJohannes Berg elems->erp_info = pos; 11831946bed9SJohannes Berg else 11841946bed9SJohannes Berg elem_parse_failed = true; 1185dd76986bSJohannes Berg break; 1186dd76986bSJohannes Berg case WLAN_EID_EXT_SUPP_RATES: 1187dd76986bSJohannes Berg elems->ext_supp_rates = pos; 1188dd76986bSJohannes Berg elems->ext_supp_rates_len = elen; 1189dd76986bSJohannes Berg break; 1190dd76986bSJohannes Berg case WLAN_EID_HT_CAPABILITY: 1191dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_ht_cap)) 1192dd76986bSJohannes Berg elems->ht_cap_elem = (void *)pos; 1193fcff4f10SPaul Stewart else 1194fcff4f10SPaul Stewart elem_parse_failed = true; 1195dd76986bSJohannes Berg break; 1196074d46d1SJohannes Berg case WLAN_EID_HT_OPERATION: 1197074d46d1SJohannes Berg if (elen >= sizeof(struct ieee80211_ht_operation)) 1198074d46d1SJohannes Berg elems->ht_operation = (void *)pos; 1199fcff4f10SPaul Stewart else 1200fcff4f10SPaul Stewart elem_parse_failed = true; 1201dd76986bSJohannes Berg break; 1202818255eaSMahesh Palivela case WLAN_EID_VHT_CAPABILITY: 1203818255eaSMahesh Palivela if (elen >= sizeof(struct ieee80211_vht_cap)) 1204818255eaSMahesh Palivela elems->vht_cap_elem = (void *)pos; 1205818255eaSMahesh Palivela else 1206818255eaSMahesh Palivela elem_parse_failed = true; 1207818255eaSMahesh Palivela break; 1208818255eaSMahesh Palivela case WLAN_EID_VHT_OPERATION: 1209a04564c9SJohannes Berg if (elen >= sizeof(struct ieee80211_vht_operation)) { 1210818255eaSMahesh Palivela elems->vht_operation = (void *)pos; 1211a04564c9SJohannes Berg if (calc_crc) 1212a04564c9SJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 1213a04564c9SJohannes Berg break; 1214a04564c9SJohannes Berg } 1215818255eaSMahesh Palivela elem_parse_failed = true; 1216818255eaSMahesh Palivela break; 1217bee7f586SJohannes Berg case WLAN_EID_OPMODE_NOTIF: 1218a04564c9SJohannes Berg if (elen > 0) { 1219bee7f586SJohannes Berg elems->opmode_notif = pos; 1220a04564c9SJohannes Berg if (calc_crc) 1221a04564c9SJohannes Berg crc = crc32_be(crc, pos - 2, elen + 2); 1222a04564c9SJohannes Berg break; 1223a04564c9SJohannes Berg } 1224bee7f586SJohannes Berg elem_parse_failed = true; 1225bee7f586SJohannes Berg break; 1226dd76986bSJohannes Berg case WLAN_EID_MESH_ID: 1227dd76986bSJohannes Berg elems->mesh_id = pos; 1228dd76986bSJohannes Berg elems->mesh_id_len = elen; 1229dd76986bSJohannes Berg break; 1230dd76986bSJohannes Berg case WLAN_EID_MESH_CONFIG: 1231dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_meshconf_ie)) 1232dd76986bSJohannes Berg elems->mesh_config = (void *)pos; 1233fcff4f10SPaul Stewart else 1234fcff4f10SPaul Stewart elem_parse_failed = true; 1235dd76986bSJohannes Berg break; 1236dd76986bSJohannes Berg case WLAN_EID_PEER_MGMT: 1237dd76986bSJohannes Berg elems->peering = pos; 1238dd76986bSJohannes Berg elems->peering_len = elen; 1239dd76986bSJohannes Berg break; 12403f52b7e3SMarco Porsch case WLAN_EID_MESH_AWAKE_WINDOW: 12413f52b7e3SMarco Porsch if (elen >= 2) 12423f52b7e3SMarco Porsch elems->awake_window = (void *)pos; 12433f52b7e3SMarco Porsch break; 1244dd76986bSJohannes Berg case WLAN_EID_PREQ: 1245dd76986bSJohannes Berg elems->preq = pos; 1246dd76986bSJohannes Berg elems->preq_len = elen; 1247dd76986bSJohannes Berg break; 1248dd76986bSJohannes Berg case WLAN_EID_PREP: 1249dd76986bSJohannes Berg elems->prep = pos; 1250dd76986bSJohannes Berg elems->prep_len = elen; 1251dd76986bSJohannes Berg break; 1252dd76986bSJohannes Berg case WLAN_EID_PERR: 1253dd76986bSJohannes Berg elems->perr = pos; 1254dd76986bSJohannes Berg elems->perr_len = elen; 1255dd76986bSJohannes Berg break; 1256dd76986bSJohannes Berg case WLAN_EID_RANN: 1257dd76986bSJohannes Berg if (elen >= sizeof(struct ieee80211_rann_ie)) 1258dd76986bSJohannes Berg elems->rann = (void *)pos; 1259fcff4f10SPaul Stewart else 1260fcff4f10SPaul Stewart elem_parse_failed = true; 1261dd76986bSJohannes Berg break; 1262dd76986bSJohannes Berg case WLAN_EID_CHANNEL_SWITCH: 12635bc1420bSJohannes Berg if (elen != sizeof(struct ieee80211_channel_sw_ie)) { 12645bc1420bSJohannes Berg elem_parse_failed = true; 12655bc1420bSJohannes Berg break; 12665bc1420bSJohannes Berg } 12675bc1420bSJohannes Berg elems->ch_switch_ie = (void *)pos; 1268dd76986bSJohannes Berg break; 1269b4f286a1SJohannes Berg case WLAN_EID_EXT_CHANSWITCH_ANN: 1270b4f286a1SJohannes Berg if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { 1271b4f286a1SJohannes Berg elem_parse_failed = true; 1272b4f286a1SJohannes Berg break; 1273b4f286a1SJohannes Berg } 1274b4f286a1SJohannes Berg elems->ext_chansw_ie = (void *)pos; 1275b4f286a1SJohannes Berg break; 127685220d71SJohannes Berg case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 127785220d71SJohannes Berg if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { 127885220d71SJohannes Berg elem_parse_failed = true; 127985220d71SJohannes Berg break; 128085220d71SJohannes Berg } 128185220d71SJohannes Berg elems->sec_chan_offs = (void *)pos; 128285220d71SJohannes Berg break; 12838f2535b9SChun-Yeow Yeoh case WLAN_EID_CHAN_SWITCH_PARAM: 1284652e8363SJohannes Berg if (elen < 12858f2535b9SChun-Yeow Yeoh sizeof(*elems->mesh_chansw_params_ie)) { 12868f2535b9SChun-Yeow Yeoh elem_parse_failed = true; 12878f2535b9SChun-Yeow Yeoh break; 12888f2535b9SChun-Yeow Yeoh } 12898f2535b9SChun-Yeow Yeoh elems->mesh_chansw_params_ie = (void *)pos; 12908f2535b9SChun-Yeow Yeoh break; 1291b2e506bfSJohannes Berg case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 1292fd17bf04SJohannes Berg if (!params->action || 1293652e8363SJohannes Berg elen < sizeof(*elems->wide_bw_chansw_ie)) { 1294b2e506bfSJohannes Berg elem_parse_failed = true; 1295b2e506bfSJohannes Berg break; 1296b2e506bfSJohannes Berg } 1297b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = (void *)pos; 1298b2e506bfSJohannes Berg break; 1299b2e506bfSJohannes Berg case WLAN_EID_CHANNEL_SWITCH_WRAPPER: 1300fd17bf04SJohannes Berg if (params->action) { 1301b2e506bfSJohannes Berg elem_parse_failed = true; 1302b2e506bfSJohannes Berg break; 1303b2e506bfSJohannes Berg } 1304b2e506bfSJohannes Berg /* 1305b2e506bfSJohannes Berg * This is a bit tricky, but as we only care about 1306b2e506bfSJohannes Berg * the wide bandwidth channel switch element, so 1307b2e506bfSJohannes Berg * just parse it out manually. 1308b2e506bfSJohannes Berg */ 1309b2e506bfSJohannes Berg ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, 1310b2e506bfSJohannes Berg pos, elen); 1311b2e506bfSJohannes Berg if (ie) { 1312652e8363SJohannes Berg if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie)) 1313b2e506bfSJohannes Berg elems->wide_bw_chansw_ie = 1314b2e506bfSJohannes Berg (void *)(ie + 2); 1315b2e506bfSJohannes Berg else 1316b2e506bfSJohannes Berg elem_parse_failed = true; 1317b2e506bfSJohannes Berg } 1318b2e506bfSJohannes Berg break; 1319dd76986bSJohannes Berg case WLAN_EID_COUNTRY: 1320dd76986bSJohannes Berg elems->country_elem = pos; 1321dd76986bSJohannes Berg elems->country_elem_len = elen; 1322dd76986bSJohannes Berg break; 1323dd76986bSJohannes Berg case WLAN_EID_PWR_CONSTRAINT: 1324761a48d2SJohannes Berg if (elen != 1) { 1325761a48d2SJohannes Berg elem_parse_failed = true; 1326761a48d2SJohannes Berg break; 1327761a48d2SJohannes Berg } 1328dd76986bSJohannes Berg elems->pwr_constr_elem = pos; 1329dd76986bSJohannes Berg break; 1330c8d65917SSteinar H. Gunderson case WLAN_EID_CISCO_VENDOR_SPECIFIC: 1331c8d65917SSteinar H. Gunderson /* Lots of different options exist, but we only care 1332c8d65917SSteinar H. Gunderson * about the Dynamic Transmit Power Control element. 1333c8d65917SSteinar H. Gunderson * First check for the Cisco OUI, then for the DTPC 1334c8d65917SSteinar H. Gunderson * tag (0x00). 1335c8d65917SSteinar H. Gunderson */ 1336c8d65917SSteinar H. Gunderson if (elen < 4) { 1337c8d65917SSteinar H. Gunderson elem_parse_failed = true; 1338c8d65917SSteinar H. Gunderson break; 1339c8d65917SSteinar H. Gunderson } 1340c8d65917SSteinar H. Gunderson 1341c8d65917SSteinar H. Gunderson if (pos[0] != 0x00 || pos[1] != 0x40 || 1342c8d65917SSteinar H. Gunderson pos[2] != 0x96 || pos[3] != 0x00) 1343c8d65917SSteinar H. Gunderson break; 1344c8d65917SSteinar H. Gunderson 1345c8d65917SSteinar H. Gunderson if (elen != 6) { 1346c8d65917SSteinar H. Gunderson elem_parse_failed = true; 1347c8d65917SSteinar H. Gunderson break; 1348c8d65917SSteinar H. Gunderson } 1349c8d65917SSteinar H. Gunderson 1350c8d65917SSteinar H. Gunderson if (calc_crc) 1351c8d65917SSteinar H. Gunderson crc = crc32_be(crc, pos - 2, elen + 2); 1352c8d65917SSteinar H. Gunderson 1353c8d65917SSteinar H. Gunderson elems->cisco_dtpc_elem = pos; 1354c8d65917SSteinar H. Gunderson break; 13552aa485e1SJohn Crispin case WLAN_EID_ADDBA_EXT: 1356652e8363SJohannes Berg if (elen < sizeof(struct ieee80211_addba_ext_ie)) { 13572aa485e1SJohn Crispin elem_parse_failed = true; 13582aa485e1SJohn Crispin break; 13592aa485e1SJohn Crispin } 13602aa485e1SJohn Crispin elems->addba_ext_ie = (void *)pos; 13612aa485e1SJohn Crispin break; 1362dd76986bSJohannes Berg case WLAN_EID_TIMEOUT_INTERVAL: 136379ba1d89SJohannes Berg if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) 136479ba1d89SJohannes Berg elems->timeout_int = (void *)pos; 136579ba1d89SJohannes Berg else 136679ba1d89SJohannes Berg elem_parse_failed = true; 1367dd76986bSJohannes Berg break; 1368e38a017bSAvraham Stern case WLAN_EID_BSS_MAX_IDLE_PERIOD: 1369e38a017bSAvraham Stern if (elen >= sizeof(*elems->max_idle_period_ie)) 1370e38a017bSAvraham Stern elems->max_idle_period_ie = (void *)pos; 1371e38a017bSAvraham Stern break; 1372c0058df7SShaul Triebitz case WLAN_EID_RSNX: 1373c0058df7SShaul Triebitz elems->rsnx = pos; 1374c0058df7SShaul Triebitz elems->rsnx_len = elen; 1375c0058df7SShaul Triebitz break; 1376b0345850SWen Gong case WLAN_EID_TX_POWER_ENVELOPE: 1377b0345850SWen Gong if (elen < 1 || 1378b0345850SWen Gong elen > sizeof(struct ieee80211_tx_pwr_env)) 1379b0345850SWen Gong break; 1380b0345850SWen Gong 1381b0345850SWen Gong if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env)) 1382b0345850SWen Gong break; 1383b0345850SWen Gong 1384b0345850SWen Gong elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos; 1385b0345850SWen Gong elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen; 1386b0345850SWen Gong elems->tx_pwr_env_num++; 1387b0345850SWen Gong break; 138841cbb0f5SLuca Coelho case WLAN_EID_EXTENSION: 1389e4d005b8SJohannes Berg ieee80211_parse_extension_element(calc_crc ? 1390e4d005b8SJohannes Berg &crc : NULL, 1391ea5cba26SJohannes Berg elem, elems, params); 139241cbb0f5SLuca Coelho break; 1393cd418ba6SThomas Pedersen case WLAN_EID_S1G_CAPABILITIES: 1394652e8363SJohannes Berg if (elen >= sizeof(*elems->s1g_capab)) 1395cd418ba6SThomas Pedersen elems->s1g_capab = (void *)pos; 1396cd418ba6SThomas Pedersen else 1397cd418ba6SThomas Pedersen elem_parse_failed = true; 1398cd418ba6SThomas Pedersen break; 1399cd418ba6SThomas Pedersen case WLAN_EID_S1G_OPERATION: 1400cd418ba6SThomas Pedersen if (elen == sizeof(*elems->s1g_oper)) 1401cd418ba6SThomas Pedersen elems->s1g_oper = (void *)pos; 1402cd418ba6SThomas Pedersen else 1403cd418ba6SThomas Pedersen elem_parse_failed = true; 1404cd418ba6SThomas Pedersen break; 1405cd418ba6SThomas Pedersen case WLAN_EID_S1G_BCN_COMPAT: 1406cd418ba6SThomas Pedersen if (elen == sizeof(*elems->s1g_bcn_compat)) 1407cd418ba6SThomas Pedersen elems->s1g_bcn_compat = (void *)pos; 1408cd418ba6SThomas Pedersen else 1409cd418ba6SThomas Pedersen elem_parse_failed = true; 1410cd418ba6SThomas Pedersen break; 14111d00ce80SThomas Pedersen case WLAN_EID_AID_RESPONSE: 14121d00ce80SThomas Pedersen if (elen == sizeof(struct ieee80211_aid_response_ie)) 14131d00ce80SThomas Pedersen elems->aid_resp = (void *)pos; 14141d00ce80SThomas Pedersen else 14151d00ce80SThomas Pedersen elem_parse_failed = true; 14161d00ce80SThomas Pedersen break; 1417dd76986bSJohannes Berg default: 1418dd76986bSJohannes Berg break; 1419dd76986bSJohannes Berg } 1420dd76986bSJohannes Berg 1421fcff4f10SPaul Stewart if (elem_parse_failed) 1422fcff4f10SPaul Stewart elems->parse_error = true; 1423fcff4f10SPaul Stewart else 14245df45690SJohannes Berg __set_bit(id, seen_elems); 1425dd76986bSJohannes Berg } 1426dd76986bSJohannes Berg 1427fd17bf04SJohannes Berg if (!for_each_element_completed(elem, params->start, params->len)) 1428fcff4f10SPaul Stewart elems->parse_error = true; 1429fcff4f10SPaul Stewart 1430dd76986bSJohannes Berg return crc; 1431dd76986bSJohannes Berg } 1432dd76986bSJohannes Berg 14335023b14cSSara Sharon static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len, 1434671042a4SSara Sharon struct ieee802_11_elems *elems, 143538c6aa29SJohannes Berg struct cfg80211_bss *bss, 14365809a5d5SDan Carpenter u8 *nontransmitted_profile) 1437671042a4SSara Sharon { 1438671042a4SSara Sharon const struct element *elem, *sub; 14395023b14cSSara Sharon size_t profile_len = 0; 14405023b14cSSara Sharon bool found = false; 1441671042a4SSara Sharon 144238c6aa29SJohannes Berg if (!bss || !bss->transmitted_bss) 14435023b14cSSara Sharon return profile_len; 1444671042a4SSara Sharon 1445671042a4SSara Sharon for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) { 1446671042a4SSara Sharon if (elem->datalen < 2) 1447671042a4SSara Sharon continue; 1448*8f033d2bSJohannes Berg if (elem->data[0] < 1 || elem->data[0] > 8) 1449*8f033d2bSJohannes Berg continue; 1450671042a4SSara Sharon 1451671042a4SSara Sharon for_each_element(sub, elem->data + 1, elem->datalen - 1) { 1452671042a4SSara Sharon u8 new_bssid[ETH_ALEN]; 1453671042a4SSara Sharon const u8 *index; 1454671042a4SSara Sharon 1455671042a4SSara Sharon if (sub->id != 0 || sub->datalen < 4) { 1456671042a4SSara Sharon /* not a valid BSS profile */ 1457671042a4SSara Sharon continue; 1458671042a4SSara Sharon } 1459671042a4SSara Sharon 1460671042a4SSara Sharon if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP || 1461671042a4SSara Sharon sub->data[1] != 2) { 1462671042a4SSara Sharon /* The first element of the 1463671042a4SSara Sharon * Nontransmitted BSSID Profile is not 1464671042a4SSara Sharon * the Nontransmitted BSSID Capability 1465671042a4SSara Sharon * element. 1466671042a4SSara Sharon */ 1467671042a4SSara Sharon continue; 1468671042a4SSara Sharon } 1469671042a4SSara Sharon 14705809a5d5SDan Carpenter memset(nontransmitted_profile, 0, len); 14715023b14cSSara Sharon profile_len = cfg80211_merge_profile(start, len, 14725023b14cSSara Sharon elem, 14735023b14cSSara Sharon sub, 14745023b14cSSara Sharon nontransmitted_profile, 14755023b14cSSara Sharon len); 14765023b14cSSara Sharon 1477671042a4SSara Sharon /* found a Nontransmitted BSSID Profile */ 1478671042a4SSara Sharon index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, 14795809a5d5SDan Carpenter nontransmitted_profile, 14805023b14cSSara Sharon profile_len); 1481671042a4SSara Sharon if (!index || index[1] < 1 || index[2] == 0) { 1482671042a4SSara Sharon /* Invalid MBSSID Index element */ 1483671042a4SSara Sharon continue; 1484671042a4SSara Sharon } 1485671042a4SSara Sharon 148638c6aa29SJohannes Berg cfg80211_gen_new_bssid(bss->transmitted_bss->bssid, 1487671042a4SSara Sharon elem->data[0], 1488671042a4SSara Sharon index[2], 1489671042a4SSara Sharon new_bssid); 149038c6aa29SJohannes Berg if (ether_addr_equal(new_bssid, bss->bssid)) { 14915023b14cSSara Sharon found = true; 1492671042a4SSara Sharon elems->bssid_index_len = index[1]; 1493671042a4SSara Sharon elems->bssid_index = (void *)&index[2]; 1494671042a4SSara Sharon break; 1495671042a4SSara Sharon } 1496671042a4SSara Sharon } 1497671042a4SSara Sharon } 14985023b14cSSara Sharon 14995023b14cSSara Sharon return found ? profile_len : 0; 1500671042a4SSara Sharon } 1501671042a4SSara Sharon 1502fd17bf04SJohannes Berg struct ieee802_11_elems * 1503fd17bf04SJohannes Berg ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params) 150478ac51f8SSara Sharon { 15055d24828dSJohannes Berg struct ieee802_11_elems *elems; 1506671042a4SSara Sharon const struct element *non_inherit = NULL; 15075023b14cSSara Sharon u8 *nontransmitted_profile; 15085023b14cSSara Sharon int nontransmitted_profile_len = 0; 1509671042a4SSara Sharon 15105d24828dSJohannes Berg elems = kzalloc(sizeof(*elems), GFP_ATOMIC); 15115d24828dSJohannes Berg if (!elems) 15125d24828dSJohannes Berg return NULL; 1513fd17bf04SJohannes Berg elems->ie_start = params->start; 1514fd17bf04SJohannes Berg elems->total_len = params->len; 151578ac51f8SSara Sharon 1516fd17bf04SJohannes Berg nontransmitted_profile = kmalloc(params->len, GFP_ATOMIC); 15175023b14cSSara Sharon if (nontransmitted_profile) { 15185023b14cSSara Sharon nontransmitted_profile_len = 1519fd17bf04SJohannes Berg ieee802_11_find_bssid_profile(params->start, params->len, 152038c6aa29SJohannes Berg elems, params->bss, 15215809a5d5SDan Carpenter nontransmitted_profile); 1522671042a4SSara Sharon non_inherit = 1523671042a4SSara Sharon cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE, 15245023b14cSSara Sharon nontransmitted_profile, 15255023b14cSSara Sharon nontransmitted_profile_len); 15265023b14cSSara Sharon } 1527671042a4SSara Sharon 1528fd17bf04SJohannes Berg elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit); 152978ac51f8SSara Sharon 153078ac51f8SSara Sharon /* Override with nontransmitted profile, if found */ 1531fd17bf04SJohannes Berg if (nontransmitted_profile_len) { 1532fd17bf04SJohannes Berg struct ieee80211_elems_parse_params sub = { 1533fd17bf04SJohannes Berg .start = nontransmitted_profile, 1534fd17bf04SJohannes Berg .len = nontransmitted_profile_len, 1535fd17bf04SJohannes Berg .action = params->action, 1536425f4b5fSJohannes Berg .link_id = params->link_id, 1537fd17bf04SJohannes Berg }; 1538fd17bf04SJohannes Berg 1539fd17bf04SJohannes Berg _ieee802_11_parse_elems_full(&sub, elems, NULL); 1540fd17bf04SJohannes Berg } 154178ac51f8SSara Sharon 154278ac51f8SSara Sharon if (elems->tim && !elems->parse_error) { 154378ac51f8SSara Sharon const struct ieee80211_tim_ie *tim_ie = elems->tim; 154478ac51f8SSara Sharon 154578ac51f8SSara Sharon elems->dtim_period = tim_ie->dtim_period; 154678ac51f8SSara Sharon elems->dtim_count = tim_ie->dtim_count; 154778ac51f8SSara Sharon } 154878ac51f8SSara Sharon 154978ac51f8SSara Sharon /* Override DTIM period and count if needed */ 155078ac51f8SSara Sharon if (elems->bssid_index && 155178ac51f8SSara Sharon elems->bssid_index_len >= 155278ac51f8SSara Sharon offsetofend(struct ieee80211_bssid_index, dtim_period)) 155378ac51f8SSara Sharon elems->dtim_period = elems->bssid_index->dtim_period; 155478ac51f8SSara Sharon 155578ac51f8SSara Sharon if (elems->bssid_index && 155678ac51f8SSara Sharon elems->bssid_index_len >= 155778ac51f8SSara Sharon offsetofend(struct ieee80211_bssid_index, dtim_count)) 155878ac51f8SSara Sharon elems->dtim_count = elems->bssid_index->dtim_count; 155978ac51f8SSara Sharon 15605023b14cSSara Sharon kfree(nontransmitted_profile); 15615023b14cSSara Sharon 15625d24828dSJohannes Berg return elems; 156378ac51f8SSara Sharon } 156478ac51f8SSara Sharon 1565e552af05SHaim Dreyfuss void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1566e552af05SHaim Dreyfuss struct ieee80211_tx_queue_params 1567e552af05SHaim Dreyfuss *qparam, int ac) 1568e552af05SHaim Dreyfuss { 1569e552af05SHaim Dreyfuss struct ieee80211_chanctx_conf *chanctx_conf; 1570e552af05SHaim Dreyfuss const struct ieee80211_reg_rule *rrule; 157138cb87eeSStanislaw Gruszka const struct ieee80211_wmm_ac *wmm_ac; 1572e552af05SHaim Dreyfuss u16 center_freq = 0; 1573e552af05SHaim Dreyfuss 1574e552af05SHaim Dreyfuss if (sdata->vif.type != NL80211_IFTYPE_AP && 1575e552af05SHaim Dreyfuss sdata->vif.type != NL80211_IFTYPE_STATION) 1576e552af05SHaim Dreyfuss return; 1577e552af05SHaim Dreyfuss 1578e552af05SHaim Dreyfuss rcu_read_lock(); 1579d0a9123eSJohannes Berg chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1580e552af05SHaim Dreyfuss if (chanctx_conf) 1581e552af05SHaim Dreyfuss center_freq = chanctx_conf->def.chan->center_freq; 1582e552af05SHaim Dreyfuss 1583e552af05SHaim Dreyfuss if (!center_freq) { 1584e552af05SHaim Dreyfuss rcu_read_unlock(); 1585e552af05SHaim Dreyfuss return; 1586e552af05SHaim Dreyfuss } 1587e552af05SHaim Dreyfuss 1588e552af05SHaim Dreyfuss rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 1589e552af05SHaim Dreyfuss 159038cb87eeSStanislaw Gruszka if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 1591e552af05SHaim Dreyfuss rcu_read_unlock(); 1592e552af05SHaim Dreyfuss return; 1593e552af05SHaim Dreyfuss } 1594e552af05SHaim Dreyfuss 1595e552af05SHaim Dreyfuss if (sdata->vif.type == NL80211_IFTYPE_AP) 159638cb87eeSStanislaw Gruszka wmm_ac = &rrule->wmm_rule.ap[ac]; 1597e552af05SHaim Dreyfuss else 159838cb87eeSStanislaw Gruszka wmm_ac = &rrule->wmm_rule.client[ac]; 1599e552af05SHaim Dreyfuss qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1600e552af05SHaim Dreyfuss qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1601e552af05SHaim Dreyfuss qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1602abd76d25SDreyfuss, Haim qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1603e552af05SHaim Dreyfuss rcu_read_unlock(); 1604e552af05SHaim Dreyfuss } 1605e552af05SHaim Dreyfuss 1606b3e2130bSJohannes Berg void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 1607cec66283SJohannes Berg bool bss_notify, bool enable_qos) 16085825fe10SJohannes Berg { 1609b3e2130bSJohannes Berg struct ieee80211_sub_if_data *sdata = link->sdata; 16105825fe10SJohannes Berg struct ieee80211_local *local = sdata->local; 16115825fe10SJohannes Berg struct ieee80211_tx_queue_params qparam; 161255de908aSJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 161354bcbc69SJohannes Berg int ac; 1614cec66283SJohannes Berg bool use_11b; 1615239281f8SRostislav Lisovy bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1616aa837e1dSJohannes Berg int aCWmin, aCWmax; 16175825fe10SJohannes Berg 16185825fe10SJohannes Berg if (!local->ops->conf_tx) 16195825fe10SJohannes Berg return; 16205825fe10SJohannes Berg 162154bcbc69SJohannes Berg if (local->hw.queues < IEEE80211_NUM_ACS) 162254bcbc69SJohannes Berg return; 162354bcbc69SJohannes Berg 16245825fe10SJohannes Berg memset(&qparam, 0, sizeof(qparam)); 16255825fe10SJohannes Berg 162655de908aSJohannes Berg rcu_read_lock(); 1627b3e2130bSJohannes Berg chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 162855de908aSJohannes Berg use_11b = (chanctx_conf && 162957fbcce3SJohannes Berg chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 163039eac2deSJohannes Berg !link->operating_11g_mode; 163155de908aSJohannes Berg rcu_read_unlock(); 16325825fe10SJohannes Berg 1633239281f8SRostislav Lisovy is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1634239281f8SRostislav Lisovy 1635aa837e1dSJohannes Berg /* Set defaults according to 802.11-2007 Table 7-37 */ 1636aa837e1dSJohannes Berg aCWmax = 1023; 1637aa837e1dSJohannes Berg if (use_11b) 1638aa837e1dSJohannes Berg aCWmin = 31; 16395825fe10SJohannes Berg else 1640aa837e1dSJohannes Berg aCWmin = 15; 16415825fe10SJohannes Berg 16421f4ffde8SFred Zhou /* Confiure old 802.11b/g medium access rules. */ 16431f4ffde8SFred Zhou qparam.cw_max = aCWmax; 16441f4ffde8SFred Zhou qparam.cw_min = aCWmin; 16451f4ffde8SFred Zhou qparam.txop = 0; 16461f4ffde8SFred Zhou qparam.aifs = 2; 16471f4ffde8SFred Zhou 16481f4ffde8SFred Zhou for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 16491f4ffde8SFred Zhou /* Update if QoS is enabled. */ 1650a8ce8544SStanislaw Gruszka if (enable_qos) { 165154bcbc69SJohannes Berg switch (ac) { 16521d98fb12SJohannes Berg case IEEE80211_AC_BK: 16537ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 16547ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 16555825fe10SJohannes Berg qparam.txop = 0; 1656239281f8SRostislav Lisovy if (is_ocb) 1657239281f8SRostislav Lisovy qparam.aifs = 9; 1658239281f8SRostislav Lisovy else 1659aa837e1dSJohannes Berg qparam.aifs = 7; 1660aa837e1dSJohannes Berg break; 1661a8ce8544SStanislaw Gruszka /* never happens but let's not leave undefined */ 1662a8ce8544SStanislaw Gruszka default: 16631d98fb12SJohannes Berg case IEEE80211_AC_BE: 16647ba10a8eSJohannes Berg qparam.cw_max = aCWmax; 16657ba10a8eSJohannes Berg qparam.cw_min = aCWmin; 1666aa837e1dSJohannes Berg qparam.txop = 0; 1667239281f8SRostislav Lisovy if (is_ocb) 1668239281f8SRostislav Lisovy qparam.aifs = 6; 1669239281f8SRostislav Lisovy else 1670aa837e1dSJohannes Berg qparam.aifs = 3; 1671aa837e1dSJohannes Berg break; 16721d98fb12SJohannes Berg case IEEE80211_AC_VI: 1673aa837e1dSJohannes Berg qparam.cw_max = aCWmin; 1674aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 2 - 1; 1675239281f8SRostislav Lisovy if (is_ocb) 1676239281f8SRostislav Lisovy qparam.txop = 0; 1677239281f8SRostislav Lisovy else if (use_11b) 1678aa837e1dSJohannes Berg qparam.txop = 6016/32; 1679aa837e1dSJohannes Berg else 1680aa837e1dSJohannes Berg qparam.txop = 3008/32; 1681239281f8SRostislav Lisovy 1682239281f8SRostislav Lisovy if (is_ocb) 1683239281f8SRostislav Lisovy qparam.aifs = 3; 1684239281f8SRostislav Lisovy else 1685aa837e1dSJohannes Berg qparam.aifs = 2; 1686aa837e1dSJohannes Berg break; 16871d98fb12SJohannes Berg case IEEE80211_AC_VO: 1688aa837e1dSJohannes Berg qparam.cw_max = (aCWmin + 1) / 2 - 1; 1689aa837e1dSJohannes Berg qparam.cw_min = (aCWmin + 1) / 4 - 1; 1690239281f8SRostislav Lisovy if (is_ocb) 1691239281f8SRostislav Lisovy qparam.txop = 0; 1692239281f8SRostislav Lisovy else if (use_11b) 1693aa837e1dSJohannes Berg qparam.txop = 3264/32; 1694aa837e1dSJohannes Berg else 1695aa837e1dSJohannes Berg qparam.txop = 1504/32; 1696aa837e1dSJohannes Berg qparam.aifs = 2; 1697aa837e1dSJohannes Berg break; 1698aa837e1dSJohannes Berg } 1699a8ce8544SStanislaw Gruszka } 1700e552af05SHaim Dreyfuss ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 17015825fe10SJohannes Berg 1702ab13315aSKalle Valo qparam.uapsd = false; 1703ab13315aSKalle Valo 1704b3e2130bSJohannes Berg link->tx_conf[ac] = qparam; 1705b3e2130bSJohannes Berg drv_conf_tx(local, link, ac, &qparam); 1706aa837e1dSJohannes Berg } 1707e1b3ec1aSStanislaw Gruszka 1708f142c6b9SJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1709708d50edSAyala Beker sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1710708d50edSAyala Beker sdata->vif.type != NL80211_IFTYPE_NAN) { 1711b3e2130bSJohannes Berg link->conf->qos = enable_qos; 17123abead59SJohannes Berg if (bss_notify) 1713b3e2130bSJohannes Berg ieee80211_link_info_change_notify(sdata, link, 17143abead59SJohannes Berg BSS_CHANGED_QOS); 17155825fe10SJohannes Berg } 1716d9734979SSujith } 1717e50db65cSJohannes Berg 171846900298SJohannes Berg void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1719700e8ea6SJouni Malinen u16 transaction, u16 auth_alg, u16 status, 17204a3cb702SJohannes Berg const u8 *extra, size_t extra_len, const u8 *da, 17211672c0e3SJohannes Berg const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 17221672c0e3SJohannes Berg u32 tx_flags) 172346900298SJohannes Berg { 172446900298SJohannes Berg struct ieee80211_local *local = sdata->local; 172546900298SJohannes Berg struct sk_buff *skb; 172646900298SJohannes Berg struct ieee80211_mgmt *mgmt; 17278ec9a96bSJohannes Berg bool multi_link = sdata->vif.valid_links; 17288ec9a96bSJohannes Berg struct { 17298ec9a96bSJohannes Berg u8 id; 17308ec9a96bSJohannes Berg u8 len; 17318ec9a96bSJohannes Berg u8 ext_id; 17328ec9a96bSJohannes Berg struct ieee80211_multi_link_elem ml; 17338ec9a96bSJohannes Berg struct ieee80211_mle_basic_common_info basic; 17348ec9a96bSJohannes Berg } __packed mle = { 17358ec9a96bSJohannes Berg .id = WLAN_EID_EXTENSION, 17368ec9a96bSJohannes Berg .len = sizeof(mle) - 2, 17378ec9a96bSJohannes Berg .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 17388ec9a96bSJohannes Berg .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 17398ec9a96bSJohannes Berg .basic.len = sizeof(mle.basic), 17408ec9a96bSJohannes Berg }; 1741fffd0934SJohannes Berg int err; 174246900298SJohannes Berg 17438ec9a96bSJohannes Berg memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 17448ec9a96bSJohannes Berg 174515e230abSFred Zhou /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1746744462a9SMax Stepanov skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 17478ec9a96bSJohannes Berg 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 17488ec9a96bSJohannes Berg multi_link * sizeof(mle)); 1749d15b8459SJoe Perches if (!skb) 175046900298SJohannes Berg return; 1751d15b8459SJoe Perches 1752744462a9SMax Stepanov skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 175346900298SJohannes Berg 1754b080db58SJohannes Berg mgmt = skb_put_zero(skb, 24 + 6); 175546900298SJohannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 175646900298SJohannes Berg IEEE80211_STYPE_AUTH); 1757efa6a09dSAntonio Quartulli memcpy(mgmt->da, da, ETH_ALEN); 175847846c9bSJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 175946900298SJohannes Berg memcpy(mgmt->bssid, bssid, ETH_ALEN); 176046900298SJohannes Berg mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 176146900298SJohannes Berg mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1762700e8ea6SJouni Malinen mgmt->u.auth.status_code = cpu_to_le16(status); 176346900298SJohannes Berg if (extra) 176459ae1d12SJohannes Berg skb_put_data(skb, extra, extra_len); 17658ec9a96bSJohannes Berg if (multi_link) 17668ec9a96bSJohannes Berg skb_put_data(skb, &mle, sizeof(mle)); 176746900298SJohannes Berg 1768fffd0934SJohannes Berg if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1769fffd0934SJohannes Berg mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1770fffd0934SJohannes Berg err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 17717d7b0075SJohannes Berg if (WARN_ON(err)) { 17727d7b0075SJohannes Berg kfree_skb(skb); 17737d7b0075SJohannes Berg return; 17747d7b0075SJohannes Berg } 1775fffd0934SJohannes Berg } 1776fffd0934SJohannes Berg 17771672c0e3SJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 17781672c0e3SJohannes Berg tx_flags; 177962ae67beSJohannes Berg ieee80211_tx_skb(sdata, skb); 178046900298SJohannes Berg } 178146900298SJohannes Berg 17826ae16775SAntonio Quartulli void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 17834b08d1b6SJohannes Berg const u8 *da, const u8 *bssid, 17844b08d1b6SJohannes Berg u16 stype, u16 reason, 17856ae16775SAntonio Quartulli bool send_frame, u8 *frame_buf) 17866ae16775SAntonio Quartulli { 17876ae16775SAntonio Quartulli struct ieee80211_local *local = sdata->local; 17886ae16775SAntonio Quartulli struct sk_buff *skb; 17896ae16775SAntonio Quartulli struct ieee80211_mgmt *mgmt = (void *)frame_buf; 17906ae16775SAntonio Quartulli 17916ae16775SAntonio Quartulli /* build frame */ 17926ae16775SAntonio Quartulli mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 17936ae16775SAntonio Quartulli mgmt->duration = 0; /* initialize only */ 17946ae16775SAntonio Quartulli mgmt->seq_ctrl = 0; /* initialize only */ 17954b08d1b6SJohannes Berg memcpy(mgmt->da, da, ETH_ALEN); 17966ae16775SAntonio Quartulli memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 17976ae16775SAntonio Quartulli memcpy(mgmt->bssid, bssid, ETH_ALEN); 17986ae16775SAntonio Quartulli /* u.deauth.reason_code == u.disassoc.reason_code */ 17996ae16775SAntonio Quartulli mgmt->u.deauth.reason_code = cpu_to_le16(reason); 18006ae16775SAntonio Quartulli 18016ae16775SAntonio Quartulli if (send_frame) { 18026ae16775SAntonio Quartulli skb = dev_alloc_skb(local->hw.extra_tx_headroom + 18036ae16775SAntonio Quartulli IEEE80211_DEAUTH_FRAME_LEN); 18046ae16775SAntonio Quartulli if (!skb) 18056ae16775SAntonio Quartulli return; 18066ae16775SAntonio Quartulli 18076ae16775SAntonio Quartulli skb_reserve(skb, local->hw.extra_tx_headroom); 18086ae16775SAntonio Quartulli 18096ae16775SAntonio Quartulli /* copy in frame */ 181059ae1d12SJohannes Berg skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 18116ae16775SAntonio Quartulli 18126ae16775SAntonio Quartulli if (sdata->vif.type != NL80211_IFTYPE_STATION || 18136ae16775SAntonio Quartulli !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 18146ae16775SAntonio Quartulli IEEE80211_SKB_CB(skb)->flags |= 18156ae16775SAntonio Quartulli IEEE80211_TX_INTFL_DONT_ENCRYPT; 18166ae16775SAntonio Quartulli 18176ae16775SAntonio Quartulli ieee80211_tx_skb(sdata, skb); 18186ae16775SAntonio Quartulli } 18196ae16775SAntonio Quartulli } 18206ae16775SAntonio Quartulli 18212ad2274cSIlan Peer static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end) 18222ad2274cSIlan Peer { 18232ad2274cSIlan Peer if ((end - pos) < 5) 18242ad2274cSIlan Peer return pos; 18252ad2274cSIlan Peer 18262ad2274cSIlan Peer *pos++ = WLAN_EID_EXTENSION; 18272ad2274cSIlan Peer *pos++ = 1 + sizeof(cap); 18282ad2274cSIlan Peer *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA; 18292ad2274cSIlan Peer memcpy(pos, &cap, sizeof(cap)); 18302ad2274cSIlan Peer 18312ad2274cSIlan Peer return pos + 2; 18322ad2274cSIlan Peer } 18332ad2274cSIlan Peer 18342ad2274cSIlan Peer static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata, 1835c56ef672SDavid Spinadel u8 *buffer, size_t buffer_len, 1836c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 183757fbcce3SJohannes Berg enum nl80211_band band, 1838c56ef672SDavid Spinadel u32 rate_mask, 1839c56ef672SDavid Spinadel struct cfg80211_chan_def *chandef, 184000387f32SJohannes Berg size_t *offset, u32 flags) 1841de95a54bSJohannes Berg { 18422ad2274cSIlan Peer struct ieee80211_local *local = sdata->local; 1843de95a54bSJohannes Berg struct ieee80211_supported_band *sband; 184441cbb0f5SLuca Coelho const struct ieee80211_sta_he_cap *he_cap; 1845820acc81SIlan Peer const struct ieee80211_sta_eht_cap *eht_cap; 1846c604b9f2SJohannes Berg u8 *pos = buffer, *end = buffer + buffer_len; 1847c56ef672SDavid Spinadel size_t noffset; 18488e664fb3SJohannes Berg int supp_rates_len, i; 18498dcb2003SJouni Malinen u8 rates[32]; 18508dcb2003SJouni Malinen int num_rates; 18518dcb2003SJouni Malinen int ext_rates_len; 18522103dec1SSimon Wunderlich int shift; 18532103dec1SSimon Wunderlich u32 rate_flags; 185440a11ca8SJohannes Berg bool have_80mhz = false; 1855de95a54bSJohannes Berg 1856c56ef672SDavid Spinadel *offset = 0; 1857c56ef672SDavid Spinadel 18584d36ec58SJohannes Berg sband = local->hw.wiphy->bands[band]; 1859d811b3d5SArik Nemtsov if (WARN_ON_ONCE(!sband)) 1860d811b3d5SArik Nemtsov return 0; 1861de95a54bSJohannes Berg 18622103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(chandef); 18632103dec1SSimon Wunderlich shift = ieee80211_chandef_get_shift(chandef); 18642103dec1SSimon Wunderlich 18658dcb2003SJouni Malinen num_rates = 0; 18668dcb2003SJouni Malinen for (i = 0; i < sband->n_bitrates; i++) { 18678dcb2003SJouni Malinen if ((BIT(i) & rate_mask) == 0) 18688dcb2003SJouni Malinen continue; /* skip rate */ 18692103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 18702103dec1SSimon Wunderlich continue; 18712103dec1SSimon Wunderlich 18722103dec1SSimon Wunderlich rates[num_rates++] = 18732103dec1SSimon Wunderlich (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 18742103dec1SSimon Wunderlich (1 << shift) * 5); 18758dcb2003SJouni Malinen } 18768dcb2003SJouni Malinen 18778dcb2003SJouni Malinen supp_rates_len = min_t(int, num_rates, 8); 18788e664fb3SJohannes Berg 1879c604b9f2SJohannes Berg if (end - pos < 2 + supp_rates_len) 1880c604b9f2SJohannes Berg goto out_err; 1881de95a54bSJohannes Berg *pos++ = WLAN_EID_SUPP_RATES; 18828e664fb3SJohannes Berg *pos++ = supp_rates_len; 18838dcb2003SJouni Malinen memcpy(pos, rates, supp_rates_len); 18848dcb2003SJouni Malinen pos += supp_rates_len; 1885de95a54bSJohannes Berg 18868e664fb3SJohannes Berg /* insert "request information" if in custom IEs */ 18878e664fb3SJohannes Berg if (ie && ie_len) { 18888e664fb3SJohannes Berg static const u8 before_extrates[] = { 18898e664fb3SJohannes Berg WLAN_EID_SSID, 18908e664fb3SJohannes Berg WLAN_EID_SUPP_RATES, 18918e664fb3SJohannes Berg WLAN_EID_REQUEST, 18928e664fb3SJohannes Berg }; 18938e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 18948e664fb3SJohannes Berg before_extrates, 18958e664fb3SJohannes Berg ARRAY_SIZE(before_extrates), 1896c56ef672SDavid Spinadel *offset); 1897c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1898c604b9f2SJohannes Berg goto out_err; 1899c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1900c56ef672SDavid Spinadel pos += noffset - *offset; 1901c56ef672SDavid Spinadel *offset = noffset; 19028e664fb3SJohannes Berg } 19038e664fb3SJohannes Berg 19048dcb2003SJouni Malinen ext_rates_len = num_rates - supp_rates_len; 19058dcb2003SJouni Malinen if (ext_rates_len > 0) { 1906c604b9f2SJohannes Berg if (end - pos < 2 + ext_rates_len) 1907c604b9f2SJohannes Berg goto out_err; 1908de95a54bSJohannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 19098dcb2003SJouni Malinen *pos++ = ext_rates_len; 19108dcb2003SJouni Malinen memcpy(pos, rates + supp_rates_len, ext_rates_len); 19118dcb2003SJouni Malinen pos += ext_rates_len; 19128e664fb3SJohannes Berg } 19138e664fb3SJohannes Berg 191457fbcce3SJohannes Berg if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1915c604b9f2SJohannes Berg if (end - pos < 3) 1916c604b9f2SJohannes Berg goto out_err; 1917651b5225SJouni Malinen *pos++ = WLAN_EID_DS_PARAMS; 1918651b5225SJouni Malinen *pos++ = 1; 19192103dec1SSimon Wunderlich *pos++ = ieee80211_frequency_to_channel( 19202103dec1SSimon Wunderlich chandef->chan->center_freq); 1921651b5225SJouni Malinen } 1922651b5225SJouni Malinen 1923b9771d41SJohannes Berg if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1924b9771d41SJohannes Berg goto done; 1925b9771d41SJohannes Berg 19268e664fb3SJohannes Berg /* insert custom IEs that go before HT */ 19278e664fb3SJohannes Berg if (ie && ie_len) { 19288e664fb3SJohannes Berg static const u8 before_ht[] = { 1929a7f26d80SJohannes Berg /* 1930a7f26d80SJohannes Berg * no need to list the ones split off already 1931a7f26d80SJohannes Berg * (or generated here) 1932a7f26d80SJohannes Berg */ 19338e664fb3SJohannes Berg WLAN_EID_DS_PARAMS, 19348e664fb3SJohannes Berg WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 19358e664fb3SJohannes Berg }; 19368e664fb3SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 19378e664fb3SJohannes Berg before_ht, ARRAY_SIZE(before_ht), 1938c56ef672SDavid Spinadel *offset); 1939c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1940c604b9f2SJohannes Berg goto out_err; 1941c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1942c56ef672SDavid Spinadel pos += noffset - *offset; 1943c56ef672SDavid Spinadel *offset = noffset; 1944de95a54bSJohannes Berg } 1945de95a54bSJohannes Berg 1946c604b9f2SJohannes Berg if (sband->ht_cap.ht_supported) { 1947c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) 1948c604b9f2SJohannes Berg goto out_err; 1949ef96a842SBen Greear pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1950ef96a842SBen Greear sband->ht_cap.cap); 1951c604b9f2SJohannes Berg } 19525ef2d41aSJohannes Berg 19534d952300SJohannes Berg /* insert custom IEs that go before VHT */ 19548e664fb3SJohannes Berg if (ie && ie_len) { 19554d952300SJohannes Berg static const u8 before_vht[] = { 1956a7f26d80SJohannes Berg /* 1957a7f26d80SJohannes Berg * no need to list the ones split off already 1958a7f26d80SJohannes Berg * (or generated here) 1959a7f26d80SJohannes Berg */ 19604d952300SJohannes Berg WLAN_EID_BSS_COEX_2040, 19614d952300SJohannes Berg WLAN_EID_EXT_CAPABILITY, 19624d952300SJohannes Berg WLAN_EID_SSID_LIST, 19634d952300SJohannes Berg WLAN_EID_CHANNEL_USAGE, 19644d952300SJohannes Berg WLAN_EID_INTERWORKING, 1965b44eebeaSLiad Kaufman WLAN_EID_MESH_ID, 1966a7f26d80SJohannes Berg /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 19674d952300SJohannes Berg }; 19684d952300SJohannes Berg noffset = ieee80211_ie_split(ie, ie_len, 19694d952300SJohannes Berg before_vht, ARRAY_SIZE(before_vht), 1970c56ef672SDavid Spinadel *offset); 1971c56ef672SDavid Spinadel if (end - pos < noffset - *offset) 1972c604b9f2SJohannes Berg goto out_err; 1973c56ef672SDavid Spinadel memcpy(pos, ie + *offset, noffset - *offset); 1974c56ef672SDavid Spinadel pos += noffset - *offset; 1975c56ef672SDavid Spinadel *offset = noffset; 1976de95a54bSJohannes Berg } 1977de95a54bSJohannes Berg 197840a11ca8SJohannes Berg /* Check if any channel in this sband supports at least 80 MHz */ 197940a11ca8SJohannes Berg for (i = 0; i < sband->n_channels; i++) { 1980fa44b988SArik Nemtsov if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1981fa44b988SArik Nemtsov IEEE80211_CHAN_NO_80MHZ)) 1982fa44b988SArik Nemtsov continue; 1983fa44b988SArik Nemtsov 198440a11ca8SJohannes Berg have_80mhz = true; 198540a11ca8SJohannes Berg break; 198640a11ca8SJohannes Berg } 198740a11ca8SJohannes Berg 198840a11ca8SJohannes Berg if (sband->vht_cap.vht_supported && have_80mhz) { 1989c604b9f2SJohannes Berg if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) 1990c604b9f2SJohannes Berg goto out_err; 1991ba0afa2fSMahesh Palivela pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1992ba0afa2fSMahesh Palivela sband->vht_cap.cap); 1993c604b9f2SJohannes Berg } 1994ba0afa2fSMahesh Palivela 199541cbb0f5SLuca Coelho /* insert custom IEs that go before HE */ 199641cbb0f5SLuca Coelho if (ie && ie_len) { 199741cbb0f5SLuca Coelho static const u8 before_he[] = { 199841cbb0f5SLuca Coelho /* 199941cbb0f5SLuca Coelho * no need to list the ones split off before VHT 200041cbb0f5SLuca Coelho * or generated here 200141cbb0f5SLuca Coelho */ 200241cbb0f5SLuca Coelho WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 200341cbb0f5SLuca Coelho WLAN_EID_AP_CSN, 200441cbb0f5SLuca Coelho /* TODO: add 11ah/11aj/11ak elements */ 200541cbb0f5SLuca Coelho }; 200641cbb0f5SLuca Coelho noffset = ieee80211_ie_split(ie, ie_len, 200741cbb0f5SLuca Coelho before_he, ARRAY_SIZE(before_he), 200841cbb0f5SLuca Coelho *offset); 200941cbb0f5SLuca Coelho if (end - pos < noffset - *offset) 201041cbb0f5SLuca Coelho goto out_err; 201141cbb0f5SLuca Coelho memcpy(pos, ie + *offset, noffset - *offset); 201241cbb0f5SLuca Coelho pos += noffset - *offset; 201341cbb0f5SLuca Coelho *offset = noffset; 201441cbb0f5SLuca Coelho } 201541cbb0f5SLuca Coelho 2016bac2fd3dSJohannes Berg he_cap = ieee80211_get_he_iftype_cap(sband, 2017bac2fd3dSJohannes Berg ieee80211_vif_type_p2p(&sdata->vif)); 20180bc47057SJohannes Berg if (he_cap && 20190bc47057SJohannes Berg cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 20200bc47057SJohannes Berg IEEE80211_CHAN_NO_HE)) { 20211f2c1044SJohannes Berg pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end); 202241cbb0f5SLuca Coelho if (!pos) 202341cbb0f5SLuca Coelho goto out_err; 20247d29bc50SJohannes Berg } 20252ad2274cSIlan Peer 2026820acc81SIlan Peer eht_cap = ieee80211_get_eht_iftype_cap(sband, 2027820acc81SIlan Peer ieee80211_vif_type_p2p(&sdata->vif)); 2028820acc81SIlan Peer 2029820acc81SIlan Peer if (eht_cap && 2030820acc81SIlan Peer cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 2031820acc81SIlan Peer IEEE80211_CHAN_NO_HE | 2032820acc81SIlan Peer IEEE80211_CHAN_NO_EHT)) { 2033ea5cba26SJohannes Berg pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end, 2034ea5cba26SJohannes Berg sdata->vif.type == NL80211_IFTYPE_AP); 2035820acc81SIlan Peer if (!pos) 2036820acc81SIlan Peer goto out_err; 2037820acc81SIlan Peer } 2038820acc81SIlan Peer 20397d29bc50SJohannes Berg if (cfg80211_any_usable_channels(local->hw.wiphy, 20407d29bc50SJohannes Berg BIT(NL80211_BAND_6GHZ), 20417d29bc50SJohannes Berg IEEE80211_CHAN_NO_HE)) { 20427d29bc50SJohannes Berg struct ieee80211_supported_band *sband6; 20437d29bc50SJohannes Berg 20447d29bc50SJohannes Berg sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 20457d29bc50SJohannes Berg he_cap = ieee80211_get_he_iftype_cap(sband6, 20467d29bc50SJohannes Berg ieee80211_vif_type_p2p(&sdata->vif)); 20477d29bc50SJohannes Berg 20487d29bc50SJohannes Berg if (he_cap) { 20492ad2274cSIlan Peer enum nl80211_iftype iftype = 20502ad2274cSIlan Peer ieee80211_vif_type_p2p(&sdata->vif); 20512ad2274cSIlan Peer __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype); 20522ad2274cSIlan Peer 20532ad2274cSIlan Peer pos = ieee80211_write_he_6ghz_cap(pos, cap, end); 20542ad2274cSIlan Peer } 205541cbb0f5SLuca Coelho } 205641cbb0f5SLuca Coelho 205741cbb0f5SLuca Coelho /* 205841cbb0f5SLuca Coelho * If adding more here, adjust code in main.c 205941cbb0f5SLuca Coelho * that calculates local->scan_ies_len. 206041cbb0f5SLuca Coelho */ 206141cbb0f5SLuca Coelho 2062de95a54bSJohannes Berg return pos - buffer; 2063c604b9f2SJohannes Berg out_err: 2064c604b9f2SJohannes Berg WARN_ONCE(1, "not enough space for preq IEs\n"); 2065b9771d41SJohannes Berg done: 2066c604b9f2SJohannes Berg return pos - buffer; 2067de95a54bSJohannes Berg } 2068de95a54bSJohannes Berg 20692ad2274cSIlan Peer int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2070c56ef672SDavid Spinadel size_t buffer_len, 2071c56ef672SDavid Spinadel struct ieee80211_scan_ies *ie_desc, 2072c56ef672SDavid Spinadel const u8 *ie, size_t ie_len, 2073c56ef672SDavid Spinadel u8 bands_used, u32 *rate_masks, 207400387f32SJohannes Berg struct cfg80211_chan_def *chandef, 207500387f32SJohannes Berg u32 flags) 2076c56ef672SDavid Spinadel { 2077c56ef672SDavid Spinadel size_t pos = 0, old_pos = 0, custom_ie_offset = 0; 2078c56ef672SDavid Spinadel int i; 2079c56ef672SDavid Spinadel 2080c56ef672SDavid Spinadel memset(ie_desc, 0, sizeof(*ie_desc)); 2081c56ef672SDavid Spinadel 208257fbcce3SJohannes Berg for (i = 0; i < NUM_NL80211_BANDS; i++) { 2083c56ef672SDavid Spinadel if (bands_used & BIT(i)) { 20842ad2274cSIlan Peer pos += ieee80211_build_preq_ies_band(sdata, 2085c56ef672SDavid Spinadel buffer + pos, 2086c56ef672SDavid Spinadel buffer_len - pos, 2087c56ef672SDavid Spinadel ie, ie_len, i, 2088c56ef672SDavid Spinadel rate_masks[i], 2089c56ef672SDavid Spinadel chandef, 209000387f32SJohannes Berg &custom_ie_offset, 209100387f32SJohannes Berg flags); 2092c56ef672SDavid Spinadel ie_desc->ies[i] = buffer + old_pos; 2093c56ef672SDavid Spinadel ie_desc->len[i] = pos - old_pos; 2094c56ef672SDavid Spinadel old_pos = pos; 2095c56ef672SDavid Spinadel } 2096c56ef672SDavid Spinadel } 2097c56ef672SDavid Spinadel 2098c56ef672SDavid Spinadel /* add any remaining custom IEs */ 2099c56ef672SDavid Spinadel if (ie && ie_len) { 2100c56ef672SDavid Spinadel if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, 2101c56ef672SDavid Spinadel "not enough space for preq custom IEs\n")) 2102c56ef672SDavid Spinadel return pos; 2103c56ef672SDavid Spinadel memcpy(buffer + pos, ie + custom_ie_offset, 2104c56ef672SDavid Spinadel ie_len - custom_ie_offset); 2105c56ef672SDavid Spinadel ie_desc->common_ies = buffer + pos; 2106c56ef672SDavid Spinadel ie_desc->common_ie_len = ie_len - custom_ie_offset; 2107c56ef672SDavid Spinadel pos += ie_len - custom_ie_offset; 2108c56ef672SDavid Spinadel } 2109c56ef672SDavid Spinadel 2110c56ef672SDavid Spinadel return pos; 2111c56ef672SDavid Spinadel }; 2112c56ef672SDavid Spinadel 2113a619a4c0SJuuso Oikarinen struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2114a344d677SJohannes Berg const u8 *src, const u8 *dst, 2115a344d677SJohannes Berg u32 ratemask, 21166b77863bSJohannes Berg struct ieee80211_channel *chan, 2117de95a54bSJohannes Berg const u8 *ssid, size_t ssid_len, 2118a806c558SPaul Stewart const u8 *ie, size_t ie_len, 211900387f32SJohannes Berg u32 flags) 212046900298SJohannes Berg { 212146900298SJohannes Berg struct ieee80211_local *local = sdata->local; 21222103dec1SSimon Wunderlich struct cfg80211_chan_def chandef; 212346900298SJohannes Berg struct sk_buff *skb; 212446900298SJohannes Berg struct ieee80211_mgmt *mgmt; 2125b9a9ada1SJohannes Berg int ies_len; 212657fbcce3SJohannes Berg u32 rate_masks[NUM_NL80211_BANDS] = {}; 2127c56ef672SDavid Spinadel struct ieee80211_scan_ies dummy_ie_desc; 212846900298SJohannes Berg 2129a806c558SPaul Stewart /* 2130a806c558SPaul Stewart * Do not send DS Channel parameter for directed probe requests 2131a806c558SPaul Stewart * in order to maximize the chance that we get a response. Some 2132a806c558SPaul Stewart * badly-behaved APs don't respond when this parameter is included. 2133a806c558SPaul Stewart */ 21342103dec1SSimon Wunderlich chandef.width = sdata->vif.bss_conf.chandef.width; 213500387f32SJohannes Berg if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 21362103dec1SSimon Wunderlich chandef.chan = NULL; 2137a806c558SPaul Stewart else 21382103dec1SSimon Wunderlich chandef.chan = chan; 2139651b5225SJouni Malinen 2140a344d677SJohannes Berg skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 2141f22d9813SIlan Peer local->scan_ies_len + ie_len); 21425b2bbf75SJohannes Berg if (!skb) 2143b9a9ada1SJohannes Berg return NULL; 2144b9a9ada1SJohannes Berg 2145c56ef672SDavid Spinadel rate_masks[chan->band] = ratemask; 21462ad2274cSIlan Peer ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb), 2147c56ef672SDavid Spinadel skb_tailroom(skb), &dummy_ie_desc, 2148c56ef672SDavid Spinadel ie, ie_len, BIT(chan->band), 214900387f32SJohannes Berg rate_masks, &chandef, flags); 2150b9a9ada1SJohannes Berg skb_put(skb, ies_len); 21517c12ce8bSKalle Valo 215246900298SJohannes Berg if (dst) { 21537c12ce8bSKalle Valo mgmt = (struct ieee80211_mgmt *) skb->data; 215446900298SJohannes Berg memcpy(mgmt->da, dst, ETH_ALEN); 215546900298SJohannes Berg memcpy(mgmt->bssid, dst, ETH_ALEN); 215646900298SJohannes Berg } 215746900298SJohannes Berg 215862ae67beSJohannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 21595b2bbf75SJohannes Berg 2160a619a4c0SJuuso Oikarinen return skb; 2161a619a4c0SJuuso Oikarinen } 2162a619a4c0SJuuso Oikarinen 21632103dec1SSimon Wunderlich u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 216446900298SJohannes Berg struct ieee802_11_elems *elems, 216557fbcce3SJohannes Berg enum nl80211_band band, u32 *basic_rates) 216646900298SJohannes Berg { 216746900298SJohannes Berg struct ieee80211_supported_band *sband; 216846900298SJohannes Berg size_t num_rates; 21692103dec1SSimon Wunderlich u32 supp_rates, rate_flags; 21702103dec1SSimon Wunderlich int i, j, shift; 217121a8e9ddSMohammed Shafi Shajakhan 21722103dec1SSimon Wunderlich sband = sdata->local->hw.wiphy->bands[band]; 217321a8e9ddSMohammed Shafi Shajakhan if (WARN_ON(!sband)) 217421a8e9ddSMohammed Shafi Shajakhan return 1; 21752103dec1SSimon Wunderlich 21762103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 21772103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 217846900298SJohannes Berg 217946900298SJohannes Berg num_rates = sband->n_bitrates; 218046900298SJohannes Berg supp_rates = 0; 218146900298SJohannes Berg for (i = 0; i < elems->supp_rates_len + 218246900298SJohannes Berg elems->ext_supp_rates_len; i++) { 218346900298SJohannes Berg u8 rate = 0; 218446900298SJohannes Berg int own_rate; 21859ebb61a2SAshok Nagarajan bool is_basic; 218646900298SJohannes Berg if (i < elems->supp_rates_len) 218746900298SJohannes Berg rate = elems->supp_rates[i]; 218846900298SJohannes Berg else if (elems->ext_supp_rates) 218946900298SJohannes Berg rate = elems->ext_supp_rates 219046900298SJohannes Berg [i - elems->supp_rates_len]; 219146900298SJohannes Berg own_rate = 5 * (rate & 0x7f); 21929ebb61a2SAshok Nagarajan is_basic = !!(rate & 0x80); 21939ebb61a2SAshok Nagarajan 21949ebb61a2SAshok Nagarajan if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 21959ebb61a2SAshok Nagarajan continue; 21969ebb61a2SAshok Nagarajan 21979ebb61a2SAshok Nagarajan for (j = 0; j < num_rates; j++) { 21982103dec1SSimon Wunderlich int brate; 21992103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[j].flags) 22002103dec1SSimon Wunderlich != rate_flags) 22012103dec1SSimon Wunderlich continue; 22022103dec1SSimon Wunderlich 22032103dec1SSimon Wunderlich brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, 22042103dec1SSimon Wunderlich 1 << shift); 22052103dec1SSimon Wunderlich 22062103dec1SSimon Wunderlich if (brate == own_rate) { 220746900298SJohannes Berg supp_rates |= BIT(j); 22089ebb61a2SAshok Nagarajan if (basic_rates && is_basic) 22099ebb61a2SAshok Nagarajan *basic_rates |= BIT(j); 22109ebb61a2SAshok Nagarajan } 22119ebb61a2SAshok Nagarajan } 221246900298SJohannes Berg } 221346900298SJohannes Berg return supp_rates; 221446900298SJohannes Berg } 2215f2753ddbSJohannes Berg 221684f6a01cSJohannes Berg void ieee80211_stop_device(struct ieee80211_local *local) 221784f6a01cSJohannes Berg { 221884f6a01cSJohannes Berg ieee80211_led_radio(local, false); 221967408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 222084f6a01cSJohannes Berg 222184f6a01cSJohannes Berg cancel_work_sync(&local->reconfig_filter); 222284f6a01cSJohannes Berg 222384f6a01cSJohannes Berg flush_workqueue(local->workqueue); 2224678f415fSLennert Buytenhek drv_stop(local); 222584f6a01cSJohannes Berg } 222684f6a01cSJohannes Berg 222774430f94SJohannes Berg static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 222874430f94SJohannes Berg bool aborted) 222974430f94SJohannes Berg { 223074430f94SJohannes Berg /* It's possible that we don't handle the scan completion in 223174430f94SJohannes Berg * time during suspend, so if it's still marked as completed 223274430f94SJohannes Berg * here, queue the work and flush it to clean things up. 223374430f94SJohannes Berg * Instead of calling the worker function directly here, we 223474430f94SJohannes Berg * really queue it to avoid potential races with other flows 223574430f94SJohannes Berg * scheduling the same work. 223674430f94SJohannes Berg */ 223774430f94SJohannes Berg if (test_bit(SCAN_COMPLETED, &local->scanning)) { 223874430f94SJohannes Berg /* If coming from reconfiguration failure, abort the scan so 223974430f94SJohannes Berg * we don't attempt to continue a partial HW scan - which is 224074430f94SJohannes Berg * possible otherwise if (e.g.) the 2.4 GHz portion was the 224174430f94SJohannes Berg * completed scan, and a 5 GHz portion is still pending. 224274430f94SJohannes Berg */ 224374430f94SJohannes Berg if (aborted) 224474430f94SJohannes Berg set_bit(SCAN_ABORTED, &local->scanning); 224574430f94SJohannes Berg ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); 224674430f94SJohannes Berg flush_delayed_work(&local->scan_work); 224774430f94SJohannes Berg } 224874430f94SJohannes Berg } 224974430f94SJohannes Berg 2250f6837ba8SJohannes Berg static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 2251f6837ba8SJohannes Berg { 2252f6837ba8SJohannes Berg struct ieee80211_sub_if_data *sdata; 2253f6837ba8SJohannes Berg struct ieee80211_chanctx *ctx; 2254f6837ba8SJohannes Berg 2255f6837ba8SJohannes Berg /* 2256f6837ba8SJohannes Berg * We get here if during resume the device can't be restarted properly. 2257f6837ba8SJohannes Berg * We might also get here if this happens during HW reset, which is a 2258f6837ba8SJohannes Berg * slightly different situation and we need to drop all connections in 2259f6837ba8SJohannes Berg * the latter case. 2260f6837ba8SJohannes Berg * 2261f6837ba8SJohannes Berg * Ask cfg80211 to turn off all interfaces, this will result in more 2262f6837ba8SJohannes Berg * warnings but at least we'll then get into a clean stopped state. 2263f6837ba8SJohannes Berg */ 2264f6837ba8SJohannes Berg 2265f6837ba8SJohannes Berg local->resuming = false; 2266f6837ba8SJohannes Berg local->suspended = false; 22677584f88fSEliad Peller local->in_reconfig = false; 2268f6837ba8SJohannes Berg 226974430f94SJohannes Berg ieee80211_flush_completed_scan(local, true); 227074430f94SJohannes Berg 2271f6837ba8SJohannes Berg /* scheduled scan clearly can't be running any more, but tell 2272f6837ba8SJohannes Berg * cfg80211 and clear local state 2273f6837ba8SJohannes Berg */ 2274f6837ba8SJohannes Berg ieee80211_sched_scan_end(local); 2275f6837ba8SJohannes Berg 2276f6837ba8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) 2277f6837ba8SJohannes Berg sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 2278f6837ba8SJohannes Berg 2279f6837ba8SJohannes Berg /* Mark channel contexts as not being in the driver any more to avoid 2280f6837ba8SJohannes Berg * removing them from the driver during the shutdown process... 2281f6837ba8SJohannes Berg */ 2282f6837ba8SJohannes Berg mutex_lock(&local->chanctx_mtx); 2283f6837ba8SJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 2284f6837ba8SJohannes Berg ctx->driver_present = false; 2285f6837ba8SJohannes Berg mutex_unlock(&local->chanctx_mtx); 2286f6837ba8SJohannes Berg } 2287f6837ba8SJohannes Berg 2288153a5fc4SStanislaw Gruszka static void ieee80211_assign_chanctx(struct ieee80211_local *local, 2289b4f85443SJohannes Berg struct ieee80211_sub_if_data *sdata, 2290d8675a63SJohannes Berg struct ieee80211_link_data *link) 2291153a5fc4SStanislaw Gruszka { 2292153a5fc4SStanislaw Gruszka struct ieee80211_chanctx_conf *conf; 2293153a5fc4SStanislaw Gruszka struct ieee80211_chanctx *ctx; 2294153a5fc4SStanislaw Gruszka 2295153a5fc4SStanislaw Gruszka if (!local->use_chanctx) 2296153a5fc4SStanislaw Gruszka return; 2297153a5fc4SStanislaw Gruszka 2298153a5fc4SStanislaw Gruszka mutex_lock(&local->chanctx_mtx); 2299d8675a63SJohannes Berg conf = rcu_dereference_protected(link->conf->chanctx_conf, 2300153a5fc4SStanislaw Gruszka lockdep_is_held(&local->chanctx_mtx)); 2301153a5fc4SStanislaw Gruszka if (conf) { 2302153a5fc4SStanislaw Gruszka ctx = container_of(conf, struct ieee80211_chanctx, conf); 2303727eff4dSGregory Greenman drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 2304153a5fc4SStanislaw Gruszka } 2305153a5fc4SStanislaw Gruszka mutex_unlock(&local->chanctx_mtx); 2306153a5fc4SStanislaw Gruszka } 2307153a5fc4SStanislaw Gruszka 23081ea2c864SJohannes Berg static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 23091ea2c864SJohannes Berg { 23101ea2c864SJohannes Berg struct ieee80211_local *local = sdata->local; 23111ea2c864SJohannes Berg struct sta_info *sta; 23121ea2c864SJohannes Berg 23131ea2c864SJohannes Berg /* add STAs back */ 23141ea2c864SJohannes Berg mutex_lock(&local->sta_mtx); 23151ea2c864SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 23161ea2c864SJohannes Berg enum ieee80211_sta_state state; 23171ea2c864SJohannes Berg 23181ea2c864SJohannes Berg if (!sta->uploaded || sta->sdata != sdata) 23191ea2c864SJohannes Berg continue; 23201ea2c864SJohannes Berg 23211ea2c864SJohannes Berg for (state = IEEE80211_STA_NOTEXIST; 23221ea2c864SJohannes Berg state < sta->sta_state; state++) 23231ea2c864SJohannes Berg WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 23241ea2c864SJohannes Berg state + 1)); 23251ea2c864SJohannes Berg } 23261ea2c864SJohannes Berg mutex_unlock(&local->sta_mtx); 23271ea2c864SJohannes Berg } 23281ea2c864SJohannes Berg 2329167e33f4SAyala Beker static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 2330167e33f4SAyala Beker { 2331167e33f4SAyala Beker struct cfg80211_nan_func *func, **funcs; 2332167e33f4SAyala Beker int res, id, i = 0; 2333167e33f4SAyala Beker 2334167e33f4SAyala Beker res = drv_start_nan(sdata->local, sdata, 2335167e33f4SAyala Beker &sdata->u.nan.conf); 2336167e33f4SAyala Beker if (WARN_ON(res)) 2337167e33f4SAyala Beker return res; 2338167e33f4SAyala Beker 23396396bb22SKees Cook funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, 23406396bb22SKees Cook sizeof(*funcs), 23416396bb22SKees Cook GFP_KERNEL); 2342167e33f4SAyala Beker if (!funcs) 2343167e33f4SAyala Beker return -ENOMEM; 2344167e33f4SAyala Beker 2345167e33f4SAyala Beker /* Add all the functions: 2346167e33f4SAyala Beker * This is a little bit ugly. We need to call a potentially sleeping 2347167e33f4SAyala Beker * callback for each NAN function, so we can't hold the spinlock. 2348167e33f4SAyala Beker */ 2349167e33f4SAyala Beker spin_lock_bh(&sdata->u.nan.func_lock); 2350167e33f4SAyala Beker 2351167e33f4SAyala Beker idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 2352167e33f4SAyala Beker funcs[i++] = func; 2353167e33f4SAyala Beker 2354167e33f4SAyala Beker spin_unlock_bh(&sdata->u.nan.func_lock); 2355167e33f4SAyala Beker 2356167e33f4SAyala Beker for (i = 0; funcs[i]; i++) { 2357167e33f4SAyala Beker res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 2358167e33f4SAyala Beker if (WARN_ON(res)) 2359167e33f4SAyala Beker ieee80211_nan_func_terminated(&sdata->vif, 2360167e33f4SAyala Beker funcs[i]->instance_id, 2361167e33f4SAyala Beker NL80211_NAN_FUNC_TERM_REASON_ERROR, 2362167e33f4SAyala Beker GFP_KERNEL); 2363167e33f4SAyala Beker } 2364167e33f4SAyala Beker 2365167e33f4SAyala Beker kfree(funcs); 2366167e33f4SAyala Beker 2367167e33f4SAyala Beker return 0; 2368167e33f4SAyala Beker } 2369167e33f4SAyala Beker 2370f2753ddbSJohannes Berg int ieee80211_reconfig(struct ieee80211_local *local) 2371f2753ddbSJohannes Berg { 2372f2753ddbSJohannes Berg struct ieee80211_hw *hw = &local->hw; 2373f2753ddbSJohannes Berg struct ieee80211_sub_if_data *sdata; 237455de908aSJohannes Berg struct ieee80211_chanctx *ctx; 2375f2753ddbSJohannes Berg struct sta_info *sta; 23762683d65bSEliad Peller int res, i; 2377d888130aSJohannes Berg bool reconfig_due_to_wowlan = false; 2378d43c6b6eSDavid Spinadel struct ieee80211_sub_if_data *sched_scan_sdata; 23796ea0a69cSJohannes Berg struct cfg80211_sched_scan_request *sched_scan_req; 2380d43c6b6eSDavid Spinadel bool sched_scan_stopped = false; 2381b0485e9fSEliad Peller bool suspended = local->suspended; 23827d352ccfSYoughandhar Chintala bool in_reconfig = false; 2383d888130aSJohannes Berg 23840f8b8245SEliad Peller /* nothing to do if HW shouldn't run */ 23850f8b8245SEliad Peller if (!local->open_count) 23860f8b8245SEliad Peller goto wake_up; 23870f8b8245SEliad Peller 23888f21b0adSJohannes Berg #ifdef CONFIG_PM 2389b0485e9fSEliad Peller if (suspended) 2390ceb99fe0SJohannes Berg local->resuming = true; 2391f2753ddbSJohannes Berg 2392eecc4800SJohannes Berg if (local->wowlan) { 2393b0485e9fSEliad Peller /* 2394b0485e9fSEliad Peller * In the wowlan case, both mac80211 and the device 2395b0485e9fSEliad Peller * are functional when the resume op is called, so 2396b0485e9fSEliad Peller * clear local->suspended so the device could operate 2397b0485e9fSEliad Peller * normally (e.g. pass rx frames). 2398b0485e9fSEliad Peller */ 2399b0485e9fSEliad Peller local->suspended = false; 2400eecc4800SJohannes Berg res = drv_resume(local); 240127b3eb9cSJohannes Berg local->wowlan = false; 2402eecc4800SJohannes Berg if (res < 0) { 2403eecc4800SJohannes Berg local->resuming = false; 2404eecc4800SJohannes Berg return res; 2405eecc4800SJohannes Berg } 2406eecc4800SJohannes Berg if (res == 0) 2407eecc4800SJohannes Berg goto wake_up; 2408eecc4800SJohannes Berg WARN_ON(res > 1); 2409eecc4800SJohannes Berg /* 2410eecc4800SJohannes Berg * res is 1, which means the driver requested 2411eecc4800SJohannes Berg * to go through a regular reset on wakeup. 2412b0485e9fSEliad Peller * restore local->suspended in this case. 2413eecc4800SJohannes Berg */ 2414d888130aSJohannes Berg reconfig_due_to_wowlan = true; 2415b0485e9fSEliad Peller local->suspended = true; 2416eecc4800SJohannes Berg } 2417eecc4800SJohannes Berg #endif 241894f9b97bSJohannes Berg 241924feda00SLuis R. Rodriguez /* 242043d6df00SEliad Peller * In case of hw_restart during suspend (without wowlan), 242143d6df00SEliad Peller * cancel restart work, as we are reconfiguring the device 242243d6df00SEliad Peller * anyway. 242343d6df00SEliad Peller * Note that restart_work is scheduled on a frozen workqueue, 242443d6df00SEliad Peller * so we can't deadlock in this case. 242543d6df00SEliad Peller */ 242643d6df00SEliad Peller if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 242743d6df00SEliad Peller cancel_work_sync(&local->restart_work); 242843d6df00SEliad Peller 2429968a76ceSEliad Peller local->started = false; 2430968a76ceSEliad Peller 243143d6df00SEliad Peller /* 243224feda00SLuis R. Rodriguez * Upon resume hardware can sometimes be goofy due to 243324feda00SLuis R. Rodriguez * various platform / driver / bus issues, so restarting 243424feda00SLuis R. Rodriguez * the device may at times not work immediately. Propagate 243524feda00SLuis R. Rodriguez * the error. 243624feda00SLuis R. Rodriguez */ 243724487981SJohannes Berg res = drv_start(local); 243824feda00SLuis R. Rodriguez if (res) { 2439b0485e9fSEliad Peller if (suspended) 2440f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 2441f6837ba8SJohannes Berg else 2442f6837ba8SJohannes Berg WARN(1, "Hardware became unavailable during restart.\n"); 2443f6837ba8SJohannes Berg ieee80211_handle_reconfig_failure(local); 244424feda00SLuis R. Rodriguez return res; 244524feda00SLuis R. Rodriguez } 2446f2753ddbSJohannes Berg 24477f281975SYogesh Ashok Powar /* setup fragmentation threshold */ 24487f281975SYogesh Ashok Powar drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 24497f281975SYogesh Ashok Powar 24507f281975SYogesh Ashok Powar /* setup RTS threshold */ 24517f281975SYogesh Ashok Powar drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 24527f281975SYogesh Ashok Powar 24537f281975SYogesh Ashok Powar /* reset coverage class */ 24547f281975SYogesh Ashok Powar drv_set_coverage_class(local, hw->wiphy->coverage_class); 24557f281975SYogesh Ashok Powar 24561f87f7d3SJohannes Berg ieee80211_led_radio(local, true); 245767408c8cSJohannes Berg ieee80211_mod_tpt_led_trig(local, 245867408c8cSJohannes Berg IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 2459f2753ddbSJohannes Berg 2460f2753ddbSJohannes Berg /* add interfaces */ 24616dd23603SJohannes Berg sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 24624b6f1dd6SJohannes Berg if (sdata) { 24633c3e21e7SJohannes Berg /* in HW restart it exists already */ 24643c3e21e7SJohannes Berg WARN_ON(local->resuming); 24654b6f1dd6SJohannes Berg res = drv_add_interface(local, sdata); 24664b6f1dd6SJohannes Berg if (WARN_ON(res)) { 24670c2bef46SMonam Agarwal RCU_INIT_POINTER(local->monitor_sdata, NULL); 24684b6f1dd6SJohannes Berg synchronize_net(); 24694b6f1dd6SJohannes Berg kfree(sdata); 24704b6f1dd6SJohannes Berg } 24714b6f1dd6SJohannes Berg } 24724b6f1dd6SJohannes Berg 2473f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 2474f2753ddbSJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2475f2753ddbSJohannes Berg sdata->vif.type != NL80211_IFTYPE_MONITOR && 2476c8fff3dcSLuciano Coelho ieee80211_sdata_running(sdata)) { 24777b7eab6fSJohannes Berg res = drv_add_interface(local, sdata); 2478c8fff3dcSLuciano Coelho if (WARN_ON(res)) 2479c8fff3dcSLuciano Coelho break; 2480c8fff3dcSLuciano Coelho } 2481c8fff3dcSLuciano Coelho } 2482c8fff3dcSLuciano Coelho 2483c8fff3dcSLuciano Coelho /* If adding any of the interfaces failed above, roll back and 2484c8fff3dcSLuciano Coelho * report failure. 2485c8fff3dcSLuciano Coelho */ 2486c8fff3dcSLuciano Coelho if (res) { 2487c8fff3dcSLuciano Coelho list_for_each_entry_continue_reverse(sdata, &local->interfaces, 2488c8fff3dcSLuciano Coelho list) 2489c8fff3dcSLuciano Coelho if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2490c8fff3dcSLuciano Coelho sdata->vif.type != NL80211_IFTYPE_MONITOR && 2491c8fff3dcSLuciano Coelho ieee80211_sdata_running(sdata)) 2492c8fff3dcSLuciano Coelho drv_remove_interface(local, sdata); 2493c8fff3dcSLuciano Coelho ieee80211_handle_reconfig_failure(local); 2494c8fff3dcSLuciano Coelho return res; 2495f2753ddbSJohannes Berg } 2496f2753ddbSJohannes Berg 249755de908aSJohannes Berg /* add channel contexts */ 2498f0dea9c7SArend van Spriel if (local->use_chanctx) { 249955de908aSJohannes Berg mutex_lock(&local->chanctx_mtx); 250055de908aSJohannes Berg list_for_each_entry(ctx, &local->chanctx_list, list) 25015bcae31dSMichal Kazior if (ctx->replace_state != 25025bcae31dSMichal Kazior IEEE80211_CHANCTX_REPLACES_OTHER) 250355de908aSJohannes Berg WARN_ON(drv_add_chanctx(local, ctx)); 250455de908aSJohannes Berg mutex_unlock(&local->chanctx_mtx); 250555de908aSJohannes Berg 25066dd23603SJohannes Berg sdata = wiphy_dereference(local->hw.wiphy, 25076dd23603SJohannes Berg local->monitor_sdata); 2508153a5fc4SStanislaw Gruszka if (sdata && ieee80211_sdata_running(sdata)) 2509d8675a63SJohannes Berg ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 25107df180f7SZhao, Gang } 2511fe5f2559SJohannes Berg 2512f2753ddbSJohannes Berg /* reconfigure hardware */ 2513f2753ddbSJohannes Berg ieee80211_hw_config(local, ~0); 2514f2753ddbSJohannes Berg 2515f2753ddbSJohannes Berg ieee80211_configure_filter(local); 2516f2753ddbSJohannes Berg 2517f2753ddbSJohannes Berg /* Finally also reconfigure all the BSS information */ 2518f2753ddbSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 2519d8675a63SJohannes Berg unsigned int link_id; 2520ac8dd506SJohannes Berg u32 changed; 2521ac8dd506SJohannes Berg 25229607e6b6SJohannes Berg if (!ieee80211_sdata_running(sdata)) 2523f2753ddbSJohannes Berg continue; 2524ac8dd506SJohannes Berg 2525d8675a63SJohannes Berg sdata_lock(sdata); 2526d8675a63SJohannes Berg for (link_id = 0; 2527d8675a63SJohannes Berg link_id < ARRAY_SIZE(sdata->vif.link_conf); 2528d8675a63SJohannes Berg link_id++) { 2529d8675a63SJohannes Berg struct ieee80211_link_data *link; 2530d8675a63SJohannes Berg 2531d8675a63SJohannes Berg link = sdata_dereference(sdata->link[link_id], sdata); 2532d8675a63SJohannes Berg if (link) 2533b4f85443SJohannes Berg ieee80211_assign_chanctx(local, sdata, link); 2534b4f85443SJohannes Berg } 25351ea2c864SJohannes Berg 25361ea2c864SJohannes Berg switch (sdata->vif.type) { 25371ea2c864SJohannes Berg case NL80211_IFTYPE_AP_VLAN: 25381ea2c864SJohannes Berg case NL80211_IFTYPE_MONITOR: 25391ea2c864SJohannes Berg break; 25404926b51bSJohannes Berg case NL80211_IFTYPE_ADHOC: 2541f276e20bSJohannes Berg if (sdata->vif.cfg.ibss_joined) 25424926b51bSJohannes Berg WARN_ON(drv_join_ibss(local, sdata)); 2543fc0561dcSGustavo A. R. Silva fallthrough; 25441ea2c864SJohannes Berg default: 25451ea2c864SJohannes Berg ieee80211_reconfig_stations(sdata); 2546fc0561dcSGustavo A. R. Silva fallthrough; 25471ea2c864SJohannes Berg case NL80211_IFTYPE_AP: /* AP stations are handled later */ 25481ea2c864SJohannes Berg for (i = 0; i < IEEE80211_NUM_ACS; i++) 2549b3e2130bSJohannes Berg drv_conf_tx(local, &sdata->deflink, i, 2550b3e2130bSJohannes Berg &sdata->deflink.tx_conf[i]); 25511ea2c864SJohannes Berg break; 25521ea2c864SJohannes Berg } 255348c5d82aSJohannes Berg sdata_unlock(sdata); 25541ea2c864SJohannes Berg 2555ac8dd506SJohannes Berg /* common change flags for all interface types */ 2556ac8dd506SJohannes Berg changed = BSS_CHANGED_ERP_CTS_PROT | 2557ac8dd506SJohannes Berg BSS_CHANGED_ERP_PREAMBLE | 2558ac8dd506SJohannes Berg BSS_CHANGED_ERP_SLOT | 2559ac8dd506SJohannes Berg BSS_CHANGED_HT | 2560ac8dd506SJohannes Berg BSS_CHANGED_BASIC_RATES | 2561ac8dd506SJohannes Berg BSS_CHANGED_BEACON_INT | 2562ac8dd506SJohannes Berg BSS_CHANGED_BSSID | 25634ced3f74SJohannes Berg BSS_CHANGED_CQM | 256455de47f6SEliad Peller BSS_CHANGED_QOS | 25651ea6f9c0SJohannes Berg BSS_CHANGED_IDLE | 2566dcbe73caSPradeep Kumar Chitrapu BSS_CHANGED_TXPOWER | 2567dcbe73caSPradeep Kumar Chitrapu BSS_CHANGED_MCAST_RATE; 2568ac8dd506SJohannes Berg 2569d0a9123eSJohannes Berg if (sdata->vif.bss_conf.mu_mimo_owner) 257023a1f8d4SSara Sharon changed |= BSS_CHANGED_MU_GROUPS; 257123a1f8d4SSara Sharon 2572f2753ddbSJohannes Berg switch (sdata->vif.type) { 2573f2753ddbSJohannes Berg case NL80211_IFTYPE_STATION: 25740d392e93SEliad Peller changed |= BSS_CHANGED_ASSOC | 2575ab095877SEliad Peller BSS_CHANGED_ARP_FILTER | 2576ab095877SEliad Peller BSS_CHANGED_PS; 2577c65dd147SEmmanuel Grumbach 2578989c6505SAlexander Bondar /* Re-send beacon info report to the driver */ 2579bfd8403aSJohannes Berg if (sdata->deflink.u.mgd.have_beacon) 2580989c6505SAlexander Bondar changed |= BSS_CHANGED_BEACON_INFO; 2581c65dd147SEmmanuel Grumbach 2582e38a017bSAvraham Stern if (sdata->vif.bss_conf.max_idle_period || 2583e38a017bSAvraham Stern sdata->vif.bss_conf.protected_keep_alive) 2584e38a017bSAvraham Stern changed |= BSS_CHANGED_KEEP_ALIVE; 2585e38a017bSAvraham Stern 25868d61ffa5SJohannes Berg sdata_lock(sdata); 2587ac8dd506SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 25888d61ffa5SJohannes Berg sdata_unlock(sdata); 2589ac8dd506SJohannes Berg break; 25906e0bd6c3SRostislav Lisovy case NL80211_IFTYPE_OCB: 2591239281f8SRostislav Lisovy changed |= BSS_CHANGED_OCB; 2592239281f8SRostislav Lisovy ieee80211_bss_info_change_notify(sdata, changed); 25936e0bd6c3SRostislav Lisovy break; 2594f2753ddbSJohannes Berg case NL80211_IFTYPE_ADHOC: 2595ac8dd506SJohannes Berg changed |= BSS_CHANGED_IBSS; 2596fc0561dcSGustavo A. R. Silva fallthrough; 2597f2753ddbSJohannes Berg case NL80211_IFTYPE_AP: 2598339afbf4SJohannes Berg changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; 2599e7979ac7SArik Nemtsov 2600bc847970SPradeep Kumar Chitrapu if (sdata->vif.bss_conf.ftm_responder == 1 && 2601bc847970SPradeep Kumar Chitrapu wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2602bc847970SPradeep Kumar Chitrapu NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2603bc847970SPradeep Kumar Chitrapu changed |= BSS_CHANGED_FTM_RESPONDER; 2604bc847970SPradeep Kumar Chitrapu 26051041638fSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP) { 2606e7979ac7SArik Nemtsov changed |= BSS_CHANGED_AP_PROBE_RESP; 2607e7979ac7SArik Nemtsov 2608bfd8403aSJohannes Berg if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2609b327c84cSGregory Greenman drv_start_ap(local, sdata, 2610b327c84cSGregory Greenman sdata->deflink.conf); 26111041638fSJohannes Berg } 2612fc0561dcSGustavo A. R. Silva fallthrough; 2613f2753ddbSJohannes Berg case NL80211_IFTYPE_MESH_POINT: 26148da34932SJohannes Berg if (sdata->vif.bss_conf.enable_beacon) { 2615ac8dd506SJohannes Berg changed |= BSS_CHANGED_BEACON | 2616ac8dd506SJohannes Berg BSS_CHANGED_BEACON_ENABLED; 26172d0ddec5SJohannes Berg ieee80211_bss_info_change_notify(sdata, changed); 26188da34932SJohannes Berg } 2619f2753ddbSJohannes Berg break; 2620167e33f4SAyala Beker case NL80211_IFTYPE_NAN: 2621167e33f4SAyala Beker res = ieee80211_reconfig_nan(sdata); 2622167e33f4SAyala Beker if (res < 0) { 2623167e33f4SAyala Beker ieee80211_handle_reconfig_failure(local); 2624167e33f4SAyala Beker return res; 2625167e33f4SAyala Beker } 2626167e33f4SAyala Beker break; 2627f2753ddbSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 2628f2753ddbSJohannes Berg case NL80211_IFTYPE_MONITOR: 262998104fdeSJohannes Berg case NL80211_IFTYPE_P2P_DEVICE: 2630b205786eSZhao, Gang /* nothing to do */ 2631f142c6b9SJohannes Berg break; 2632f2753ddbSJohannes Berg case NL80211_IFTYPE_UNSPECIFIED: 26332e161f78SJohannes Berg case NUM_NL80211_IFTYPES: 26342ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_CLIENT: 26352ca27bcfSJohannes Berg case NL80211_IFTYPE_P2P_GO: 263670d9c599SJohannes Berg case NL80211_IFTYPE_WDS: 2637f2753ddbSJohannes Berg WARN_ON(1); 2638f2753ddbSJohannes Berg break; 2639f2753ddbSJohannes Berg } 2640f2753ddbSJohannes Berg } 2641f2753ddbSJohannes Berg 26424a733ef1SJohannes Berg ieee80211_recalc_ps(local); 26438e1b23b9SEyal Shapira 26442a419056SJohannes Berg /* 26456e1b1b24SEliad Peller * The sta might be in psm against the ap (e.g. because 26466e1b1b24SEliad Peller * this was the state before a hw restart), so we 26476e1b1b24SEliad Peller * explicitly send a null packet in order to make sure 26486e1b1b24SEliad Peller * it'll sync against the ap (and get out of psm). 26496e1b1b24SEliad Peller */ 26506e1b1b24SEliad Peller if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 26516e1b1b24SEliad Peller list_for_each_entry(sdata, &local->interfaces, list) { 26526e1b1b24SEliad Peller if (sdata->vif.type != NL80211_IFTYPE_STATION) 26536e1b1b24SEliad Peller continue; 265420f544eeSJohannes Berg if (!sdata->u.mgd.associated) 265520f544eeSJohannes Berg continue; 26566e1b1b24SEliad Peller 2657076cdcb1SJohannes Berg ieee80211_send_nullfunc(local, sdata, false); 26586e1b1b24SEliad Peller } 26596e1b1b24SEliad Peller } 26606e1b1b24SEliad Peller 26612e8d397eSArik Nemtsov /* APs are now beaconing, add back stations */ 266248c5d82aSJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 266348c5d82aSJohannes Berg if (!ieee80211_sdata_running(sdata)) 26642e8d397eSArik Nemtsov continue; 26652e8d397eSArik Nemtsov 266648c5d82aSJohannes Berg sdata_lock(sdata); 266748c5d82aSJohannes Berg switch (sdata->vif.type) { 266848c5d82aSJohannes Berg case NL80211_IFTYPE_AP_VLAN: 266948c5d82aSJohannes Berg case NL80211_IFTYPE_AP: 267048c5d82aSJohannes Berg ieee80211_reconfig_stations(sdata); 267148c5d82aSJohannes Berg break; 267248c5d82aSJohannes Berg default: 267348c5d82aSJohannes Berg break; 26742e8d397eSArik Nemtsov } 267548c5d82aSJohannes Berg sdata_unlock(sdata); 267648c5d82aSJohannes Berg } 26772e8d397eSArik Nemtsov 26787b21aea0SEyal Shapira /* add back keys */ 26797b21aea0SEyal Shapira list_for_each_entry(sdata, &local->interfaces, list) 2680624ff4b2SLior Cohen ieee80211_reenable_keys(sdata); 26817b21aea0SEyal Shapira 26820d440ea2SEliad Peller /* Reconfigure sched scan if it was interrupted by FW restart */ 26830d440ea2SEliad Peller mutex_lock(&local->mtx); 26840d440ea2SEliad Peller sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 26850d440ea2SEliad Peller lockdep_is_held(&local->mtx)); 26860d440ea2SEliad Peller sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 26870d440ea2SEliad Peller lockdep_is_held(&local->mtx)); 26880d440ea2SEliad Peller if (sched_scan_sdata && sched_scan_req) 26890d440ea2SEliad Peller /* 26900d440ea2SEliad Peller * Sched scan stopped, but we don't want to report it. Instead, 26910d440ea2SEliad Peller * we're trying to reschedule. However, if more than one scan 26920d440ea2SEliad Peller * plan was set, we cannot reschedule since we don't know which 26930d440ea2SEliad Peller * scan plan was currently running (and some scan plans may have 26940d440ea2SEliad Peller * already finished). 26950d440ea2SEliad Peller */ 26960d440ea2SEliad Peller if (sched_scan_req->n_scan_plans > 1 || 26970d440ea2SEliad Peller __ieee80211_request_sched_scan_start(sched_scan_sdata, 2698b9f628fcSEliad Peller sched_scan_req)) { 2699b9f628fcSEliad Peller RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2700b9f628fcSEliad Peller RCU_INIT_POINTER(local->sched_scan_req, NULL); 27010d440ea2SEliad Peller sched_scan_stopped = true; 2702b9f628fcSEliad Peller } 27030d440ea2SEliad Peller mutex_unlock(&local->mtx); 27040d440ea2SEliad Peller 27050d440ea2SEliad Peller if (sched_scan_stopped) 2706a05829a7SJohannes Berg cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 27070d440ea2SEliad Peller 2708c6209488SEliad Peller wake_up: 2709470f4d61SEliad Peller 27103c3e21e7SJohannes Berg if (local->monitors == local->open_count && local->monitors > 0) 27113c3e21e7SJohannes Berg ieee80211_add_virtual_monitor(local); 27123c3e21e7SJohannes Berg 27136e1b1b24SEliad Peller /* 27142a419056SJohannes Berg * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 27152a419056SJohannes Berg * sessions can be established after a resume. 27162a419056SJohannes Berg * 27172a419056SJohannes Berg * Also tear down aggregation sessions since reconfiguring 27182a419056SJohannes Berg * them in a hardware restart scenario is not easily done 27192a419056SJohannes Berg * right now, and the hardware will have lost information 27202a419056SJohannes Berg * about the sessions, but we and the AP still think they 27212a419056SJohannes Berg * are active. This is really a workaround though. 27222a419056SJohannes Berg */ 272330686bf7SJohannes Berg if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 27242a419056SJohannes Berg mutex_lock(&local->sta_mtx); 27252a419056SJohannes Berg 27262a419056SJohannes Berg list_for_each_entry(sta, &local->sta_list, list) { 272727392719SEliad Peller if (!local->resuming) 2728c82c4a80SJohannes Berg ieee80211_sta_tear_down_BA_sessions( 2729c82c4a80SJohannes Berg sta, AGG_STOP_LOCAL_REQUEST); 2730c2c98fdeSJohannes Berg clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 273174e2bd1fSWey-Yi Guy } 27322a419056SJohannes Berg 27332a419056SJohannes Berg mutex_unlock(&local->sta_mtx); 273474e2bd1fSWey-Yi Guy } 273574e2bd1fSWey-Yi Guy 273613dee10bSJohannes Berg /* 273713dee10bSJohannes Berg * If this is for hw restart things are still running. 273813dee10bSJohannes Berg * We may want to change that later, however. 273913dee10bSJohannes Berg */ 274013dee10bSJohannes Berg if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 274113dee10bSJohannes Berg drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 274213dee10bSJohannes Berg 27432316380fSSara Sharon if (local->in_reconfig) { 27447d352ccfSYoughandhar Chintala in_reconfig = local->in_reconfig; 27452316380fSSara Sharon local->in_reconfig = false; 27462316380fSSara Sharon barrier(); 27472316380fSSara Sharon 27482316380fSSara Sharon /* Restart deferred ROCs */ 27492316380fSSara Sharon mutex_lock(&local->mtx); 27502316380fSSara Sharon ieee80211_start_next_roc(local); 27512316380fSSara Sharon mutex_unlock(&local->mtx); 2752f8891461SNaftali Goldstein 2753f8891461SNaftali Goldstein /* Requeue all works */ 2754f8891461SNaftali Goldstein list_for_each_entry(sdata, &local->interfaces, list) 2755f8891461SNaftali Goldstein ieee80211_queue_work(&local->hw, &sdata->work); 27562316380fSSara Sharon } 27572316380fSSara Sharon 2758445ea4e8SJohannes Berg ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2759cca07b00SLuciano Coelho IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2760cca07b00SLuciano Coelho false); 2761f2753ddbSJohannes Berg 27627d352ccfSYoughandhar Chintala if (in_reconfig) { 27637d352ccfSYoughandhar Chintala list_for_each_entry(sdata, &local->interfaces, list) { 27647d352ccfSYoughandhar Chintala if (!ieee80211_sdata_running(sdata)) 27657d352ccfSYoughandhar Chintala continue; 27667d352ccfSYoughandhar Chintala if (sdata->vif.type == NL80211_IFTYPE_STATION) 27677d352ccfSYoughandhar Chintala ieee80211_sta_restart(sdata); 27687d352ccfSYoughandhar Chintala } 27697d352ccfSYoughandhar Chintala } 27707d352ccfSYoughandhar Chintala 2771b0485e9fSEliad Peller if (!suspended) 27725bb644a0SJohannes Berg return 0; 27735bb644a0SJohannes Berg 27745bb644a0SJohannes Berg #ifdef CONFIG_PM 2775ceb99fe0SJohannes Berg /* first set suspended false, then resuming */ 27765bb644a0SJohannes Berg local->suspended = false; 2777ceb99fe0SJohannes Berg mb(); 2778ceb99fe0SJohannes Berg local->resuming = false; 27795bb644a0SJohannes Berg 278074430f94SJohannes Berg ieee80211_flush_completed_scan(local, false); 27819120d94eSLuciano Coelho 27820f8b8245SEliad Peller if (local->open_count && !reconfig_due_to_wowlan) 2783cf2c92d8SEliad Peller drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2784cf2c92d8SEliad Peller 2785b8360ab8SJohannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 2786b8360ab8SJohannes Berg if (!ieee80211_sdata_running(sdata)) 2787b8360ab8SJohannes Berg continue; 2788b8360ab8SJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_STATION) 2789b8360ab8SJohannes Berg ieee80211_sta_restart(sdata); 2790b8360ab8SJohannes Berg } 2791b8360ab8SJohannes Berg 279226d59535SJohannes Berg mod_timer(&local->sta_cleanup, jiffies + 1); 27935bb644a0SJohannes Berg #else 27945bb644a0SJohannes Berg WARN_ON(1); 27955bb644a0SJohannes Berg #endif 2796d43c6b6eSDavid Spinadel 2797f2753ddbSJohannes Berg return 0; 2798f2753ddbSJohannes Berg } 279942935ecaSLuis R. Rodriguez 28007d352ccfSYoughandhar Chintala static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 280195acac61SJohannes Berg { 280295acac61SJohannes Berg struct ieee80211_sub_if_data *sdata; 280395acac61SJohannes Berg struct ieee80211_local *local; 280495acac61SJohannes Berg struct ieee80211_key *key; 280595acac61SJohannes Berg 280695acac61SJohannes Berg if (WARN_ON(!vif)) 280795acac61SJohannes Berg return; 280895acac61SJohannes Berg 280995acac61SJohannes Berg sdata = vif_to_sdata(vif); 281095acac61SJohannes Berg local = sdata->local; 281195acac61SJohannes Berg 28127d352ccfSYoughandhar Chintala if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 28137d352ccfSYoughandhar Chintala !local->resuming)) 28147d352ccfSYoughandhar Chintala return; 28157d352ccfSYoughandhar Chintala 28167d352ccfSYoughandhar Chintala if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 28177d352ccfSYoughandhar Chintala !local->in_reconfig)) 281895acac61SJohannes Berg return; 281995acac61SJohannes Berg 282095acac61SJohannes Berg if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 282195acac61SJohannes Berg return; 282295acac61SJohannes Berg 28237d352ccfSYoughandhar Chintala sdata->flags |= flag; 282495acac61SJohannes Berg 282595acac61SJohannes Berg mutex_lock(&local->key_mtx); 282695acac61SJohannes Berg list_for_each_entry(key, &sdata->key_list, list) 282795acac61SJohannes Berg key->flags |= KEY_FLAG_TAINTED; 282895acac61SJohannes Berg mutex_unlock(&local->key_mtx); 282995acac61SJohannes Berg } 28307d352ccfSYoughandhar Chintala 28317d352ccfSYoughandhar Chintala void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 28327d352ccfSYoughandhar Chintala { 28337d352ccfSYoughandhar Chintala ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 28347d352ccfSYoughandhar Chintala } 28357d352ccfSYoughandhar Chintala EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 28367d352ccfSYoughandhar Chintala 28377d352ccfSYoughandhar Chintala void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 28387d352ccfSYoughandhar Chintala { 28397d352ccfSYoughandhar Chintala ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 28407d352ccfSYoughandhar Chintala } 284195acac61SJohannes Berg EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 284295acac61SJohannes Berg 2843e9aac179SJohannes Berg void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2844d8675a63SJohannes Berg struct ieee80211_link_data *link) 28450f78231bSJohannes Berg { 284604ecd257SJohannes Berg struct ieee80211_local *local = sdata->local; 284704ecd257SJohannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 284804ecd257SJohannes Berg struct ieee80211_chanctx *chanctx; 28490f78231bSJohannes Berg 285004ecd257SJohannes Berg mutex_lock(&local->chanctx_mtx); 28510f78231bSJohannes Berg 2852d8675a63SJohannes Berg chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 285304ecd257SJohannes Berg lockdep_is_held(&local->chanctx_mtx)); 28540f78231bSJohannes Berg 2855c189a685SAndrei Otcheretianski /* 2856c189a685SAndrei Otcheretianski * This function can be called from a work, thus it may be possible 2857c189a685SAndrei Otcheretianski * that the chanctx_conf is removed (due to a disconnection, for 2858c189a685SAndrei Otcheretianski * example). 2859c189a685SAndrei Otcheretianski * So nothing should be done in such case. 2860c189a685SAndrei Otcheretianski */ 2861c189a685SAndrei Otcheretianski if (!chanctx_conf) 28625d8e4237SJohannes Berg goto unlock; 28630f78231bSJohannes Berg 286404ecd257SJohannes Berg chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 286504ecd257SJohannes Berg ieee80211_recalc_smps_chanctx(local, chanctx); 28665d8e4237SJohannes Berg unlock: 286704ecd257SJohannes Berg mutex_unlock(&local->chanctx_mtx); 28680f78231bSJohannes Berg } 28698e664fb3SJohannes Berg 28700cbf348aSAndrei Otcheretianski void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 28710cbf348aSAndrei Otcheretianski int link_id) 287221f659bfSEliad Peller { 287321f659bfSEliad Peller struct ieee80211_local *local = sdata->local; 287421f659bfSEliad Peller struct ieee80211_chanctx_conf *chanctx_conf; 287521f659bfSEliad Peller struct ieee80211_chanctx *chanctx; 28760cbf348aSAndrei Otcheretianski int i; 287721f659bfSEliad Peller 287821f659bfSEliad Peller mutex_lock(&local->chanctx_mtx); 287921f659bfSEliad Peller 28800cbf348aSAndrei Otcheretianski for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 28810cbf348aSAndrei Otcheretianski struct ieee80211_bss_conf *bss_conf; 28820cbf348aSAndrei Otcheretianski 28830cbf348aSAndrei Otcheretianski if (link_id >= 0 && link_id != i) 28840cbf348aSAndrei Otcheretianski continue; 28850cbf348aSAndrei Otcheretianski 28860cbf348aSAndrei Otcheretianski rcu_read_lock(); 28870cbf348aSAndrei Otcheretianski bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 28880cbf348aSAndrei Otcheretianski if (!bss_conf) { 28890cbf348aSAndrei Otcheretianski rcu_read_unlock(); 28900cbf348aSAndrei Otcheretianski continue; 28910cbf348aSAndrei Otcheretianski } 28920cbf348aSAndrei Otcheretianski 28930cbf348aSAndrei Otcheretianski chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 289421f659bfSEliad Peller lockdep_is_held(&local->chanctx_mtx)); 28950cbf348aSAndrei Otcheretianski /* 28960cbf348aSAndrei Otcheretianski * Since we hold the chanctx_mtx (checked above) 28970cbf348aSAndrei Otcheretianski * we can take the chanctx_conf pointer out of the 28980cbf348aSAndrei Otcheretianski * RCU critical section, it cannot go away without 28990cbf348aSAndrei Otcheretianski * the mutex. Just the way we reached it could - in 29000cbf348aSAndrei Otcheretianski * theory - go away, but we don't really care and 29010cbf348aSAndrei Otcheretianski * it really shouldn't happen anyway. 29020cbf348aSAndrei Otcheretianski */ 29030cbf348aSAndrei Otcheretianski rcu_read_unlock(); 290421f659bfSEliad Peller 2905efe9c2bfSJohannes Berg if (!chanctx_conf) 290621f659bfSEliad Peller goto unlock; 290721f659bfSEliad Peller 29080cbf348aSAndrei Otcheretianski chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 29090cbf348aSAndrei Otcheretianski conf); 291021f659bfSEliad Peller ieee80211_recalc_chanctx_min_def(local, chanctx); 29110cbf348aSAndrei Otcheretianski } 291221f659bfSEliad Peller unlock: 291321f659bfSEliad Peller mutex_unlock(&local->chanctx_mtx); 291421f659bfSEliad Peller } 291521f659bfSEliad Peller 29168e664fb3SJohannes Berg size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 29178e664fb3SJohannes Berg { 29188e664fb3SJohannes Berg size_t pos = offset; 29198e664fb3SJohannes Berg 29208e664fb3SJohannes Berg while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 29218e664fb3SJohannes Berg pos += 2 + ies[pos + 1]; 29228e664fb3SJohannes Berg 29238e664fb3SJohannes Berg return pos; 29248e664fb3SJohannes Berg } 2925615f7b9bSMeenakshi Venkataraman 2926ef96a842SBen Greear u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 292742e7aa77SAlexander Simon u16 cap) 292842e7aa77SAlexander Simon { 292942e7aa77SAlexander Simon __le16 tmp; 293042e7aa77SAlexander Simon 293142e7aa77SAlexander Simon *pos++ = WLAN_EID_HT_CAPABILITY; 293242e7aa77SAlexander Simon *pos++ = sizeof(struct ieee80211_ht_cap); 293342e7aa77SAlexander Simon memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 293442e7aa77SAlexander Simon 293542e7aa77SAlexander Simon /* capability flags */ 293642e7aa77SAlexander Simon tmp = cpu_to_le16(cap); 293742e7aa77SAlexander Simon memcpy(pos, &tmp, sizeof(u16)); 293842e7aa77SAlexander Simon pos += sizeof(u16); 293942e7aa77SAlexander Simon 294042e7aa77SAlexander Simon /* AMPDU parameters */ 2941ef96a842SBen Greear *pos++ = ht_cap->ampdu_factor | 2942ef96a842SBen Greear (ht_cap->ampdu_density << 294342e7aa77SAlexander Simon IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 294442e7aa77SAlexander Simon 294542e7aa77SAlexander Simon /* MCS set */ 2946ef96a842SBen Greear memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2947ef96a842SBen Greear pos += sizeof(ht_cap->mcs); 294842e7aa77SAlexander Simon 294942e7aa77SAlexander Simon /* extended capabilities */ 295042e7aa77SAlexander Simon pos += sizeof(__le16); 295142e7aa77SAlexander Simon 295242e7aa77SAlexander Simon /* BF capabilities */ 295342e7aa77SAlexander Simon pos += sizeof(__le32); 295442e7aa77SAlexander Simon 295542e7aa77SAlexander Simon /* antenna selection */ 295642e7aa77SAlexander Simon pos += sizeof(u8); 295742e7aa77SAlexander Simon 295842e7aa77SAlexander Simon return pos; 295942e7aa77SAlexander Simon } 296042e7aa77SAlexander Simon 2961ba0afa2fSMahesh Palivela u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2962ba0afa2fSMahesh Palivela u32 cap) 2963ba0afa2fSMahesh Palivela { 2964ba0afa2fSMahesh Palivela __le32 tmp; 2965ba0afa2fSMahesh Palivela 2966ba0afa2fSMahesh Palivela *pos++ = WLAN_EID_VHT_CAPABILITY; 2967d4950281SMahesh Palivela *pos++ = sizeof(struct ieee80211_vht_cap); 2968d4950281SMahesh Palivela memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2969ba0afa2fSMahesh Palivela 2970ba0afa2fSMahesh Palivela /* capability flags */ 2971ba0afa2fSMahesh Palivela tmp = cpu_to_le32(cap); 2972ba0afa2fSMahesh Palivela memcpy(pos, &tmp, sizeof(u32)); 2973ba0afa2fSMahesh Palivela pos += sizeof(u32); 2974ba0afa2fSMahesh Palivela 2975ba0afa2fSMahesh Palivela /* VHT MCS set */ 2976ba0afa2fSMahesh Palivela memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2977ba0afa2fSMahesh Palivela pos += sizeof(vht_cap->vht_mcs); 2978ba0afa2fSMahesh Palivela 2979ba0afa2fSMahesh Palivela return pos; 2980ba0afa2fSMahesh Palivela } 2981ba0afa2fSMahesh Palivela 298260ad72daSSven Eckelmann u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype) 298360ad72daSSven Eckelmann { 298460ad72daSSven Eckelmann const struct ieee80211_sta_he_cap *he_cap; 298560ad72daSSven Eckelmann struct ieee80211_supported_band *sband; 298660ad72daSSven Eckelmann u8 n; 298760ad72daSSven Eckelmann 298860ad72daSSven Eckelmann sband = ieee80211_get_sband(sdata); 298960ad72daSSven Eckelmann if (!sband) 299060ad72daSSven Eckelmann return 0; 299160ad72daSSven Eckelmann 299260ad72daSSven Eckelmann he_cap = ieee80211_get_he_iftype_cap(sband, iftype); 299360ad72daSSven Eckelmann if (!he_cap) 299460ad72daSSven Eckelmann return 0; 299560ad72daSSven Eckelmann 299660ad72daSSven Eckelmann n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 299760ad72daSSven Eckelmann return 2 + 1 + 299860ad72daSSven Eckelmann sizeof(he_cap->he_cap_elem) + n + 299960ad72daSSven Eckelmann ieee80211_he_ppe_size(he_cap->ppe_thres[0], 300060ad72daSSven Eckelmann he_cap->he_cap_elem.phy_cap_info); 300160ad72daSSven Eckelmann } 300260ad72daSSven Eckelmann 3003ba323e29SJohannes Berg u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, 300441cbb0f5SLuca Coelho const struct ieee80211_sta_he_cap *he_cap, 300541cbb0f5SLuca Coelho u8 *end) 300641cbb0f5SLuca Coelho { 30071f2c1044SJohannes Berg struct ieee80211_he_cap_elem elem; 300841cbb0f5SLuca Coelho u8 n; 300941cbb0f5SLuca Coelho u8 ie_len; 301041cbb0f5SLuca Coelho u8 *orig_pos = pos; 301141cbb0f5SLuca Coelho 301241cbb0f5SLuca Coelho /* Make sure we have place for the IE */ 301341cbb0f5SLuca Coelho /* 301441cbb0f5SLuca Coelho * TODO: the 1 added is because this temporarily is under the EXTENSION 301541cbb0f5SLuca Coelho * IE. Get rid of it when it moves. 301641cbb0f5SLuca Coelho */ 301741cbb0f5SLuca Coelho if (!he_cap) 301841cbb0f5SLuca Coelho return orig_pos; 301941cbb0f5SLuca Coelho 30201f2c1044SJohannes Berg /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 30211f2c1044SJohannes Berg elem = he_cap->he_cap_elem; 30221f2c1044SJohannes Berg 3023ba323e29SJohannes Berg if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ) 30241f2c1044SJohannes Berg elem.phy_cap_info[0] &= 30251f2c1044SJohannes Berg ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 30261f2c1044SJohannes Berg IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 30271f2c1044SJohannes Berg 3028ba323e29SJohannes Berg if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ) 30291f2c1044SJohannes Berg elem.phy_cap_info[0] &= 30301f2c1044SJohannes Berg ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 30311f2c1044SJohannes Berg 3032ba323e29SJohannes Berg if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ) 30331f2c1044SJohannes Berg elem.phy_cap_info[0] &= 30341f2c1044SJohannes Berg ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 30351f2c1044SJohannes Berg 30361f2c1044SJohannes Berg n = ieee80211_he_mcs_nss_size(&elem); 303741cbb0f5SLuca Coelho ie_len = 2 + 1 + 303841cbb0f5SLuca Coelho sizeof(he_cap->he_cap_elem) + n + 303941cbb0f5SLuca Coelho ieee80211_he_ppe_size(he_cap->ppe_thres[0], 304041cbb0f5SLuca Coelho he_cap->he_cap_elem.phy_cap_info); 304141cbb0f5SLuca Coelho 304241cbb0f5SLuca Coelho if ((end - pos) < ie_len) 304341cbb0f5SLuca Coelho return orig_pos; 304441cbb0f5SLuca Coelho 304541cbb0f5SLuca Coelho *pos++ = WLAN_EID_EXTENSION; 304641cbb0f5SLuca Coelho pos++; /* We'll set the size later below */ 304741cbb0f5SLuca Coelho *pos++ = WLAN_EID_EXT_HE_CAPABILITY; 304841cbb0f5SLuca Coelho 304941cbb0f5SLuca Coelho /* Fixed data */ 30501f2c1044SJohannes Berg memcpy(pos, &elem, sizeof(elem)); 30511f2c1044SJohannes Berg pos += sizeof(elem); 305241cbb0f5SLuca Coelho 305341cbb0f5SLuca Coelho memcpy(pos, &he_cap->he_mcs_nss_supp, n); 305441cbb0f5SLuca Coelho pos += n; 305541cbb0f5SLuca Coelho 305641cbb0f5SLuca Coelho /* Check if PPE Threshold should be present */ 305741cbb0f5SLuca Coelho if ((he_cap->he_cap_elem.phy_cap_info[6] & 305841cbb0f5SLuca Coelho IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 305941cbb0f5SLuca Coelho goto end; 306041cbb0f5SLuca Coelho 306141cbb0f5SLuca Coelho /* 306241cbb0f5SLuca Coelho * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 306341cbb0f5SLuca Coelho * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 306441cbb0f5SLuca Coelho */ 306541cbb0f5SLuca Coelho n = hweight8(he_cap->ppe_thres[0] & 306641cbb0f5SLuca Coelho IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 306741cbb0f5SLuca Coelho n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 306841cbb0f5SLuca Coelho IEEE80211_PPE_THRES_NSS_POS)); 306941cbb0f5SLuca Coelho 307041cbb0f5SLuca Coelho /* 307141cbb0f5SLuca Coelho * Each pair is 6 bits, and we need to add the 7 "header" bits to the 307241cbb0f5SLuca Coelho * total size. 307341cbb0f5SLuca Coelho */ 307441cbb0f5SLuca Coelho n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 307541cbb0f5SLuca Coelho n = DIV_ROUND_UP(n, 8); 307641cbb0f5SLuca Coelho 307741cbb0f5SLuca Coelho /* Copy PPE Thresholds */ 307841cbb0f5SLuca Coelho memcpy(pos, &he_cap->ppe_thres, n); 307941cbb0f5SLuca Coelho pos += n; 308041cbb0f5SLuca Coelho 308141cbb0f5SLuca Coelho end: 308241cbb0f5SLuca Coelho orig_pos[1] = (pos - orig_pos) - 2; 308341cbb0f5SLuca Coelho return pos; 308441cbb0f5SLuca Coelho } 308541cbb0f5SLuca Coelho 308624a2042cSRajkumar Manoharan void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 3087abd27d06SJohannes Berg enum ieee80211_smps_mode smps_mode, 308824a2042cSRajkumar Manoharan struct sk_buff *skb) 308924a2042cSRajkumar Manoharan { 309024a2042cSRajkumar Manoharan struct ieee80211_supported_band *sband; 309124a2042cSRajkumar Manoharan const struct ieee80211_sband_iftype_data *iftd; 309224a2042cSRajkumar Manoharan enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 309324a2042cSRajkumar Manoharan u8 *pos; 309424a2042cSRajkumar Manoharan u16 cap; 309524a2042cSRajkumar Manoharan 309665be6aa3SJohannes Berg if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 309765be6aa3SJohannes Berg BIT(NL80211_BAND_6GHZ), 309865be6aa3SJohannes Berg IEEE80211_CHAN_NO_HE)) 309924a2042cSRajkumar Manoharan return; 310024a2042cSRajkumar Manoharan 310165be6aa3SJohannes Berg sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 310265be6aa3SJohannes Berg 310324a2042cSRajkumar Manoharan iftd = ieee80211_get_sband_iftype_data(sband, iftype); 310465be6aa3SJohannes Berg if (!iftd) 310524a2042cSRajkumar Manoharan return; 310624a2042cSRajkumar Manoharan 310765ad3ef9SRajkumar Manoharan /* Check for device HE 6 GHz capability before adding element */ 310865ad3ef9SRajkumar Manoharan if (!iftd->he_6ghz_capa.capa) 310965ad3ef9SRajkumar Manoharan return; 311065ad3ef9SRajkumar Manoharan 311124a2042cSRajkumar Manoharan cap = le16_to_cpu(iftd->he_6ghz_capa.capa); 311224a2042cSRajkumar Manoharan cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS; 311324a2042cSRajkumar Manoharan 3114abd27d06SJohannes Berg switch (smps_mode) { 311524a2042cSRajkumar Manoharan case IEEE80211_SMPS_AUTOMATIC: 311624a2042cSRajkumar Manoharan case IEEE80211_SMPS_NUM_MODES: 311724a2042cSRajkumar Manoharan WARN_ON(1); 3118fc0561dcSGustavo A. R. Silva fallthrough; 311924a2042cSRajkumar Manoharan case IEEE80211_SMPS_OFF: 312024a2042cSRajkumar Manoharan cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 312124a2042cSRajkumar Manoharan IEEE80211_HE_6GHZ_CAP_SM_PS); 312224a2042cSRajkumar Manoharan break; 312324a2042cSRajkumar Manoharan case IEEE80211_SMPS_STATIC: 312424a2042cSRajkumar Manoharan cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 312524a2042cSRajkumar Manoharan IEEE80211_HE_6GHZ_CAP_SM_PS); 312624a2042cSRajkumar Manoharan break; 312724a2042cSRajkumar Manoharan case IEEE80211_SMPS_DYNAMIC: 312824a2042cSRajkumar Manoharan cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 312924a2042cSRajkumar Manoharan IEEE80211_HE_6GHZ_CAP_SM_PS); 313024a2042cSRajkumar Manoharan break; 313124a2042cSRajkumar Manoharan } 313224a2042cSRajkumar Manoharan 313324a2042cSRajkumar Manoharan pos = skb_put(skb, 2 + 1 + sizeof(cap)); 31342ad2274cSIlan Peer ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap), 31352ad2274cSIlan Peer pos + 2 + 1 + sizeof(cap)); 313624a2042cSRajkumar Manoharan } 313724a2042cSRajkumar Manoharan 3138074d46d1SJohannes Berg u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 31394bf88530SJohannes Berg const struct cfg80211_chan_def *chandef, 314057f255f5SArik Nemtsov u16 prot_mode, bool rifs_mode) 314142e7aa77SAlexander Simon { 3142074d46d1SJohannes Berg struct ieee80211_ht_operation *ht_oper; 314342e7aa77SAlexander Simon /* Build HT Information */ 3144074d46d1SJohannes Berg *pos++ = WLAN_EID_HT_OPERATION; 3145074d46d1SJohannes Berg *pos++ = sizeof(struct ieee80211_ht_operation); 3146074d46d1SJohannes Berg ht_oper = (struct ieee80211_ht_operation *)pos; 31474bf88530SJohannes Berg ht_oper->primary_chan = ieee80211_frequency_to_channel( 31484bf88530SJohannes Berg chandef->chan->center_freq); 31494bf88530SJohannes Berg switch (chandef->width) { 31504bf88530SJohannes Berg case NL80211_CHAN_WIDTH_160: 31514bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80P80: 31524bf88530SJohannes Berg case NL80211_CHAN_WIDTH_80: 31534bf88530SJohannes Berg case NL80211_CHAN_WIDTH_40: 31544bf88530SJohannes Berg if (chandef->center_freq1 > chandef->chan->center_freq) 31554bf88530SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 31564bf88530SJohannes Berg else 3157074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 315842e7aa77SAlexander Simon break; 31595dca295dSIlan Peer case NL80211_CHAN_WIDTH_320: 31605dca295dSIlan Peer /* HT information element should not be included on 6GHz */ 31615dca295dSIlan Peer WARN_ON(1); 31625dca295dSIlan Peer return pos; 316342e7aa77SAlexander Simon default: 3164074d46d1SJohannes Berg ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 316542e7aa77SAlexander Simon break; 316642e7aa77SAlexander Simon } 3167aee286c2SThomas Pedersen if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 31684bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 31694bf88530SJohannes Berg chandef->width != NL80211_CHAN_WIDTH_20) 3170074d46d1SJohannes Berg ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 3171ff3cc5f4SSimon Wunderlich 317257f255f5SArik Nemtsov if (rifs_mode) 317357f255f5SArik Nemtsov ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 317457f255f5SArik Nemtsov 3175431e3154SAshok Nagarajan ht_oper->operation_mode = cpu_to_le16(prot_mode); 3176074d46d1SJohannes Berg ht_oper->stbc_param = 0x0000; 317742e7aa77SAlexander Simon 317842e7aa77SAlexander Simon /* It seems that Basic MCS set and Supported MCS set 317942e7aa77SAlexander Simon are identical for the first 10 bytes */ 3180074d46d1SJohannes Berg memset(&ht_oper->basic_set, 0, 16); 3181074d46d1SJohannes Berg memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 318242e7aa77SAlexander Simon 3183074d46d1SJohannes Berg return pos + sizeof(struct ieee80211_ht_operation); 318442e7aa77SAlexander Simon } 318542e7aa77SAlexander Simon 318675d627d5SSimon Wunderlich void ieee80211_ie_build_wide_bw_cs(u8 *pos, 318775d627d5SSimon Wunderlich const struct cfg80211_chan_def *chandef) 318875d627d5SSimon Wunderlich { 318975d627d5SSimon Wunderlich *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 319075d627d5SSimon Wunderlich *pos++ = 3; /* IE length */ 319175d627d5SSimon Wunderlich /* New channel width */ 319275d627d5SSimon Wunderlich switch (chandef->width) { 319375d627d5SSimon Wunderlich case NL80211_CHAN_WIDTH_80: 319475d627d5SSimon Wunderlich *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 319575d627d5SSimon Wunderlich break; 319675d627d5SSimon Wunderlich case NL80211_CHAN_WIDTH_160: 319775d627d5SSimon Wunderlich *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 319875d627d5SSimon Wunderlich break; 319975d627d5SSimon Wunderlich case NL80211_CHAN_WIDTH_80P80: 320075d627d5SSimon Wunderlich *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 320175d627d5SSimon Wunderlich break; 32025dca295dSIlan Peer case NL80211_CHAN_WIDTH_320: 32035dca295dSIlan Peer /* The behavior is not defined for 320 MHz channels */ 32045dca295dSIlan Peer WARN_ON(1); 32055dca295dSIlan Peer fallthrough; 320675d627d5SSimon Wunderlich default: 320775d627d5SSimon Wunderlich *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 320875d627d5SSimon Wunderlich } 320975d627d5SSimon Wunderlich 321075d627d5SSimon Wunderlich /* new center frequency segment 0 */ 321175d627d5SSimon Wunderlich *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 321275d627d5SSimon Wunderlich /* new center frequency segment 1 */ 321375d627d5SSimon Wunderlich if (chandef->center_freq2) 321475d627d5SSimon Wunderlich *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 321575d627d5SSimon Wunderlich else 321675d627d5SSimon Wunderlich *pos++ = 0; 321775d627d5SSimon Wunderlich } 321875d627d5SSimon Wunderlich 3219fb28ec0cSArik Nemtsov u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 3220fb28ec0cSArik Nemtsov const struct cfg80211_chan_def *chandef) 3221fb28ec0cSArik Nemtsov { 3222fb28ec0cSArik Nemtsov struct ieee80211_vht_operation *vht_oper; 3223fb28ec0cSArik Nemtsov 3224fb28ec0cSArik Nemtsov *pos++ = WLAN_EID_VHT_OPERATION; 3225fb28ec0cSArik Nemtsov *pos++ = sizeof(struct ieee80211_vht_operation); 3226fb28ec0cSArik Nemtsov vht_oper = (struct ieee80211_vht_operation *)pos; 32272fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 3228fb28ec0cSArik Nemtsov chandef->center_freq1); 3229fb28ec0cSArik Nemtsov if (chandef->center_freq2) 32302fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = 3231fb28ec0cSArik Nemtsov ieee80211_frequency_to_channel(chandef->center_freq2); 3232f020ae40SChun-Yeow Yeoh else 32332fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = 0x00; 3234fb28ec0cSArik Nemtsov 3235fb28ec0cSArik Nemtsov switch (chandef->width) { 3236fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_160: 323723665aafSJouni Malinen /* 323823665aafSJouni Malinen * Convert 160 MHz channel width to new style as interop 323923665aafSJouni Malinen * workaround. 324023665aafSJouni Malinen */ 324123665aafSJouni Malinen vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 32422fb51c35SJohannes Berg vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 324323665aafSJouni Malinen if (chandef->chan->center_freq < chandef->center_freq1) 32442fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx -= 8; 324523665aafSJouni Malinen else 32462fb51c35SJohannes Berg vht_oper->center_freq_seg0_idx += 8; 3247fb28ec0cSArik Nemtsov break; 3248fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_80P80: 324923665aafSJouni Malinen /* 325023665aafSJouni Malinen * Convert 80+80 MHz channel width to new style as interop 325123665aafSJouni Malinen * workaround. 325223665aafSJouni Malinen */ 325323665aafSJouni Malinen vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 3254fb28ec0cSArik Nemtsov break; 3255fb28ec0cSArik Nemtsov case NL80211_CHAN_WIDTH_80: 3256fb28ec0cSArik Nemtsov vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 3257fb28ec0cSArik Nemtsov break; 32585dca295dSIlan Peer case NL80211_CHAN_WIDTH_320: 32595dca295dSIlan Peer /* VHT information element should not be included on 6GHz */ 32605dca295dSIlan Peer WARN_ON(1); 32615dca295dSIlan Peer return pos; 3262fb28ec0cSArik Nemtsov default: 3263fb28ec0cSArik Nemtsov vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 3264fb28ec0cSArik Nemtsov break; 3265fb28ec0cSArik Nemtsov } 3266fb28ec0cSArik Nemtsov 3267fb28ec0cSArik Nemtsov /* don't require special VHT peer rates */ 3268fb28ec0cSArik Nemtsov vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 3269fb28ec0cSArik Nemtsov 3270fb28ec0cSArik Nemtsov return pos + sizeof(struct ieee80211_vht_operation); 3271fb28ec0cSArik Nemtsov } 3272fb28ec0cSArik Nemtsov 3273d1b7524bSRajkumar Manoharan u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef) 327460ad72daSSven Eckelmann { 327560ad72daSSven Eckelmann struct ieee80211_he_operation *he_oper; 3276d1b7524bSRajkumar Manoharan struct ieee80211_he_6ghz_oper *he_6ghz_op; 327760ad72daSSven Eckelmann u32 he_oper_params; 3278d1b7524bSRajkumar Manoharan u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 3279d1b7524bSRajkumar Manoharan 3280d1b7524bSRajkumar Manoharan if (chandef->chan->band == NL80211_BAND_6GHZ) 3281d1b7524bSRajkumar Manoharan ie_len += sizeof(struct ieee80211_he_6ghz_oper); 328260ad72daSSven Eckelmann 328360ad72daSSven Eckelmann *pos++ = WLAN_EID_EXTENSION; 3284d1b7524bSRajkumar Manoharan *pos++ = ie_len; 328560ad72daSSven Eckelmann *pos++ = WLAN_EID_EXT_HE_OPERATION; 328660ad72daSSven Eckelmann 328760ad72daSSven Eckelmann he_oper_params = 0; 328860ad72daSSven Eckelmann he_oper_params |= u32_encode_bits(1023, /* disabled */ 328960ad72daSSven Eckelmann IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 329060ad72daSSven Eckelmann he_oper_params |= u32_encode_bits(1, 329160ad72daSSven Eckelmann IEEE80211_HE_OPERATION_ER_SU_DISABLE); 329260ad72daSSven Eckelmann he_oper_params |= u32_encode_bits(1, 329360ad72daSSven Eckelmann IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 3294d1b7524bSRajkumar Manoharan if (chandef->chan->band == NL80211_BAND_6GHZ) 3295d1b7524bSRajkumar Manoharan he_oper_params |= u32_encode_bits(1, 3296d1b7524bSRajkumar Manoharan IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 329760ad72daSSven Eckelmann 329860ad72daSSven Eckelmann he_oper = (struct ieee80211_he_operation *)pos; 329960ad72daSSven Eckelmann he_oper->he_oper_params = cpu_to_le32(he_oper_params); 330060ad72daSSven Eckelmann 330160ad72daSSven Eckelmann /* don't require special HE peer rates */ 330260ad72daSSven Eckelmann he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 3303d1b7524bSRajkumar Manoharan pos += sizeof(struct ieee80211_he_operation); 330460ad72daSSven Eckelmann 3305d1b7524bSRajkumar Manoharan if (chandef->chan->band != NL80211_BAND_6GHZ) 3306d1b7524bSRajkumar Manoharan goto out; 330760ad72daSSven Eckelmann 3308d1b7524bSRajkumar Manoharan /* TODO add VHT operational */ 3309d1b7524bSRajkumar Manoharan he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 3310d1b7524bSRajkumar Manoharan he_6ghz_op->minrate = 6; /* 6 Mbps */ 3311d1b7524bSRajkumar Manoharan he_6ghz_op->primary = 3312d1b7524bSRajkumar Manoharan ieee80211_frequency_to_channel(chandef->chan->center_freq); 3313d1b7524bSRajkumar Manoharan he_6ghz_op->ccfs0 = 3314d1b7524bSRajkumar Manoharan ieee80211_frequency_to_channel(chandef->center_freq1); 3315d1b7524bSRajkumar Manoharan if (chandef->center_freq2) 3316d1b7524bSRajkumar Manoharan he_6ghz_op->ccfs1 = 3317d1b7524bSRajkumar Manoharan ieee80211_frequency_to_channel(chandef->center_freq2); 3318d1b7524bSRajkumar Manoharan else 3319d1b7524bSRajkumar Manoharan he_6ghz_op->ccfs1 = 0; 3320d1b7524bSRajkumar Manoharan 3321d1b7524bSRajkumar Manoharan switch (chandef->width) { 33225dca295dSIlan Peer case NL80211_CHAN_WIDTH_320: 33235dca295dSIlan Peer /* 33245dca295dSIlan Peer * TODO: mesh operation is not defined over 6GHz 320 MHz 33255dca295dSIlan Peer * channels. 33265dca295dSIlan Peer */ 33275dca295dSIlan Peer WARN_ON(1); 33285dca295dSIlan Peer break; 3329d1b7524bSRajkumar Manoharan case NL80211_CHAN_WIDTH_160: 3330d1b7524bSRajkumar Manoharan /* Convert 160 MHz channel width to new style as interop 3331d1b7524bSRajkumar Manoharan * workaround. 3332d1b7524bSRajkumar Manoharan */ 3333d1b7524bSRajkumar Manoharan he_6ghz_op->control = 3334d1b7524bSRajkumar Manoharan IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 3335d1b7524bSRajkumar Manoharan he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 3336d1b7524bSRajkumar Manoharan if (chandef->chan->center_freq < chandef->center_freq1) 3337d1b7524bSRajkumar Manoharan he_6ghz_op->ccfs0 -= 8; 3338d1b7524bSRajkumar Manoharan else 3339d1b7524bSRajkumar Manoharan he_6ghz_op->ccfs0 += 8; 3340d1b7524bSRajkumar Manoharan fallthrough; 3341d1b7524bSRajkumar Manoharan case NL80211_CHAN_WIDTH_80P80: 3342d1b7524bSRajkumar Manoharan he_6ghz_op->control = 3343d1b7524bSRajkumar Manoharan IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 3344d1b7524bSRajkumar Manoharan break; 3345d1b7524bSRajkumar Manoharan case NL80211_CHAN_WIDTH_80: 3346d1b7524bSRajkumar Manoharan he_6ghz_op->control = 3347d1b7524bSRajkumar Manoharan IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 3348d1b7524bSRajkumar Manoharan break; 3349d1b7524bSRajkumar Manoharan case NL80211_CHAN_WIDTH_40: 3350d1b7524bSRajkumar Manoharan he_6ghz_op->control = 3351d1b7524bSRajkumar Manoharan IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 3352d1b7524bSRajkumar Manoharan break; 3353d1b7524bSRajkumar Manoharan default: 3354d1b7524bSRajkumar Manoharan he_6ghz_op->control = 3355d1b7524bSRajkumar Manoharan IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 3356d1b7524bSRajkumar Manoharan break; 3357d1b7524bSRajkumar Manoharan } 3358d1b7524bSRajkumar Manoharan 3359d1b7524bSRajkumar Manoharan pos += sizeof(struct ieee80211_he_6ghz_oper); 3360d1b7524bSRajkumar Manoharan 3361d1b7524bSRajkumar Manoharan out: 3362d1b7524bSRajkumar Manoharan return pos; 336360ad72daSSven Eckelmann } 336460ad72daSSven Eckelmann 33658ac3c704SJohannes Berg bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 33664bf88530SJohannes Berg struct cfg80211_chan_def *chandef) 336742e7aa77SAlexander Simon { 336842e7aa77SAlexander Simon enum nl80211_channel_type channel_type; 336942e7aa77SAlexander Simon 33708ac3c704SJohannes Berg if (!ht_oper) 33718ac3c704SJohannes Berg return false; 337242e7aa77SAlexander Simon 3373074d46d1SJohannes Berg switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 337442e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_NONE: 337542e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT20; 337642e7aa77SAlexander Simon break; 337742e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 337842e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40PLUS; 337942e7aa77SAlexander Simon break; 338042e7aa77SAlexander Simon case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 338142e7aa77SAlexander Simon channel_type = NL80211_CHAN_HT40MINUS; 338242e7aa77SAlexander Simon break; 338342e7aa77SAlexander Simon default: 33848ac3c704SJohannes Berg return false; 338542e7aa77SAlexander Simon } 338642e7aa77SAlexander Simon 33878ac3c704SJohannes Berg cfg80211_chandef_create(chandef, chandef->chan, channel_type); 33888ac3c704SJohannes Berg return true; 338942e7aa77SAlexander Simon } 339042e7aa77SAlexander Simon 33912a333a0dSJohannes Berg bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 33927eb26df2SJohannes Berg const struct ieee80211_vht_operation *oper, 33937eb26df2SJohannes Berg const struct ieee80211_ht_operation *htop, 3394abcff6efSJanusz.Dziedzic@tieto.com struct cfg80211_chan_def *chandef) 3395abcff6efSJanusz.Dziedzic@tieto.com { 33968ac3c704SJohannes Berg struct cfg80211_chan_def new = *chandef; 33977eb26df2SJohannes Berg int cf0, cf1; 33987eb26df2SJohannes Berg int ccfs0, ccfs1, ccfs2; 33997eb26df2SJohannes Berg int ccf0, ccf1; 340033181ea7SShay Bar u32 vht_cap; 340133181ea7SShay Bar bool support_80_80 = false; 340233181ea7SShay Bar bool support_160 = false; 34032a333a0dSJohannes Berg u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 34042a333a0dSJohannes Berg IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 34052a333a0dSJohannes Berg u8 supp_chwidth = u32_get_bits(vht_cap_info, 34062a333a0dSJohannes Berg IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 3407abcff6efSJanusz.Dziedzic@tieto.com 34087eb26df2SJohannes Berg if (!oper || !htop) 34098ac3c704SJohannes Berg return false; 34108ac3c704SJohannes Berg 341133181ea7SShay Bar vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 341233181ea7SShay Bar support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 341333181ea7SShay Bar IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 341433181ea7SShay Bar support_80_80 = ((vht_cap & 341533181ea7SShay Bar IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 341633181ea7SShay Bar (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 341733181ea7SShay Bar vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 341833181ea7SShay Bar ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 341933181ea7SShay Bar IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 34207eb26df2SJohannes Berg ccfs0 = oper->center_freq_seg0_idx; 34217eb26df2SJohannes Berg ccfs1 = oper->center_freq_seg1_idx; 34227eb26df2SJohannes Berg ccfs2 = (le16_to_cpu(htop->operation_mode) & 34237eb26df2SJohannes Berg IEEE80211_HT_OP_MODE_CCFS2_MASK) 34247eb26df2SJohannes Berg >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 34257eb26df2SJohannes Berg 34267eb26df2SJohannes Berg ccf0 = ccfs0; 34272a333a0dSJohannes Berg 34282a333a0dSJohannes Berg /* if not supported, parse as though we didn't understand it */ 34292a333a0dSJohannes Berg if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 34302a333a0dSJohannes Berg ext_nss_bw_supp = 0; 34312a333a0dSJohannes Berg 34322a333a0dSJohannes Berg /* 34332a333a0dSJohannes Berg * Cf. IEEE 802.11 Table 9-250 34342a333a0dSJohannes Berg * 34352a333a0dSJohannes Berg * We really just consider that because it's inefficient to connect 34362a333a0dSJohannes Berg * at a higher bandwidth than we'll actually be able to use. 34372a333a0dSJohannes Berg */ 34382a333a0dSJohannes Berg switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 34392a333a0dSJohannes Berg default: 34402a333a0dSJohannes Berg case 0x00: 34412a333a0dSJohannes Berg ccf1 = 0; 34422a333a0dSJohannes Berg support_160 = false; 34432a333a0dSJohannes Berg support_80_80 = false; 34442a333a0dSJohannes Berg break; 34452a333a0dSJohannes Berg case 0x01: 34462a333a0dSJohannes Berg support_80_80 = false; 3447fc0561dcSGustavo A. R. Silva fallthrough; 34482a333a0dSJohannes Berg case 0x02: 34492a333a0dSJohannes Berg case 0x03: 34507eb26df2SJohannes Berg ccf1 = ccfs2; 34512a333a0dSJohannes Berg break; 34522a333a0dSJohannes Berg case 0x10: 34532a333a0dSJohannes Berg ccf1 = ccfs1; 34542a333a0dSJohannes Berg break; 34552a333a0dSJohannes Berg case 0x11: 34562a333a0dSJohannes Berg case 0x12: 34572a333a0dSJohannes Berg if (!ccfs1) 34582a333a0dSJohannes Berg ccf1 = ccfs2; 34592a333a0dSJohannes Berg else 34602a333a0dSJohannes Berg ccf1 = ccfs1; 34612a333a0dSJohannes Berg break; 34622a333a0dSJohannes Berg case 0x13: 34632a333a0dSJohannes Berg case 0x20: 34642a333a0dSJohannes Berg case 0x23: 34652a333a0dSJohannes Berg ccf1 = ccfs1; 34662a333a0dSJohannes Berg break; 34672a333a0dSJohannes Berg } 34687eb26df2SJohannes Berg 34697eb26df2SJohannes Berg cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 34707eb26df2SJohannes Berg cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3471abcff6efSJanusz.Dziedzic@tieto.com 3472abcff6efSJanusz.Dziedzic@tieto.com switch (oper->chan_width) { 3473abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_USE_HT: 34747eb26df2SJohannes Berg /* just use HT information directly */ 3475abcff6efSJanusz.Dziedzic@tieto.com break; 3476abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_80MHZ: 34778ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_80; 34787eb26df2SJohannes Berg new.center_freq1 = cf0; 347923665aafSJouni Malinen /* If needed, adjust based on the newer interop workaround. */ 34807eb26df2SJohannes Berg if (ccf1) { 348123665aafSJouni Malinen unsigned int diff; 348223665aafSJouni Malinen 34837eb26df2SJohannes Berg diff = abs(ccf1 - ccf0); 348433181ea7SShay Bar if ((diff == 8) && support_160) { 348523665aafSJouni Malinen new.width = NL80211_CHAN_WIDTH_160; 34867eb26df2SJohannes Berg new.center_freq1 = cf1; 348733181ea7SShay Bar } else if ((diff > 8) && support_80_80) { 348823665aafSJouni Malinen new.width = NL80211_CHAN_WIDTH_80P80; 34897eb26df2SJohannes Berg new.center_freq2 = cf1; 349023665aafSJouni Malinen } 349123665aafSJouni Malinen } 3492abcff6efSJanusz.Dziedzic@tieto.com break; 3493abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_160MHZ: 34947eb26df2SJohannes Berg /* deprecated encoding */ 34958ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_160; 34967eb26df2SJohannes Berg new.center_freq1 = cf0; 3497abcff6efSJanusz.Dziedzic@tieto.com break; 3498abcff6efSJanusz.Dziedzic@tieto.com case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 34997eb26df2SJohannes Berg /* deprecated encoding */ 35008ac3c704SJohannes Berg new.width = NL80211_CHAN_WIDTH_80P80; 35017eb26df2SJohannes Berg new.center_freq1 = cf0; 35027eb26df2SJohannes Berg new.center_freq2 = cf1; 3503abcff6efSJanusz.Dziedzic@tieto.com break; 3504abcff6efSJanusz.Dziedzic@tieto.com default: 35058ac3c704SJohannes Berg return false; 3506abcff6efSJanusz.Dziedzic@tieto.com } 3507abcff6efSJanusz.Dziedzic@tieto.com 35088ac3c704SJohannes Berg if (!cfg80211_chandef_valid(&new)) 35098ac3c704SJohannes Berg return false; 35108ac3c704SJohannes Berg 35118ac3c704SJohannes Berg *chandef = new; 35128ac3c704SJohannes Berg return true; 3513abcff6efSJanusz.Dziedzic@tieto.com } 3514abcff6efSJanusz.Dziedzic@tieto.com 3515774e00c2SJohannes Berg void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper, 35161e0b3b0bSIlan Peer bool support_160, bool support_320, 35171e0b3b0bSIlan Peer struct cfg80211_chan_def *chandef) 35181e0b3b0bSIlan Peer { 35191e0b3b0bSIlan Peer struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional; 35201e0b3b0bSIlan Peer 35211e0b3b0bSIlan Peer chandef->center_freq1 = 35221e0b3b0bSIlan Peer ieee80211_channel_to_frequency(info->ccfs0, 35231e0b3b0bSIlan Peer chandef->chan->band); 35241e0b3b0bSIlan Peer 35251e0b3b0bSIlan Peer switch (u8_get_bits(info->control, 35261e0b3b0bSIlan Peer IEEE80211_EHT_OPER_CHAN_WIDTH)) { 35271e0b3b0bSIlan Peer case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 35281e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_20; 35291e0b3b0bSIlan Peer break; 35301e0b3b0bSIlan Peer case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 35311e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_40; 35321e0b3b0bSIlan Peer break; 35331e0b3b0bSIlan Peer case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 35341e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_80; 35351e0b3b0bSIlan Peer break; 35361e0b3b0bSIlan Peer case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 35371e0b3b0bSIlan Peer if (support_160) { 35381e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_160; 35391e0b3b0bSIlan Peer chandef->center_freq1 = 35401e0b3b0bSIlan Peer ieee80211_channel_to_frequency(info->ccfs1, 35411e0b3b0bSIlan Peer chandef->chan->band); 35421e0b3b0bSIlan Peer } else { 35431e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_80; 35441e0b3b0bSIlan Peer } 35451e0b3b0bSIlan Peer break; 35461e0b3b0bSIlan Peer case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 35471e0b3b0bSIlan Peer if (support_320) { 35481e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_320; 35491e0b3b0bSIlan Peer chandef->center_freq1 = 35501e0b3b0bSIlan Peer ieee80211_channel_to_frequency(info->ccfs1, 35511e0b3b0bSIlan Peer chandef->chan->band); 35521e0b3b0bSIlan Peer } else if (support_160) { 35531e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_160; 35541e0b3b0bSIlan Peer } else { 35551e0b3b0bSIlan Peer chandef->width = NL80211_CHAN_WIDTH_80; 35561e0b3b0bSIlan Peer 35571e0b3b0bSIlan Peer if (chandef->center_freq1 > chandef->chan->center_freq) 35581e0b3b0bSIlan Peer chandef->center_freq1 -= 40; 35591e0b3b0bSIlan Peer else 35601e0b3b0bSIlan Peer chandef->center_freq1 += 40; 35611e0b3b0bSIlan Peer } 35621e0b3b0bSIlan Peer break; 35631e0b3b0bSIlan Peer } 35641e0b3b0bSIlan Peer } 35651e0b3b0bSIlan Peer 356657fa5e85SJohannes Berg bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 356757fa5e85SJohannes Berg const struct ieee80211_he_operation *he_oper, 35685dca295dSIlan Peer const struct ieee80211_eht_operation *eht_oper, 356957fa5e85SJohannes Berg struct cfg80211_chan_def *chandef) 357057fa5e85SJohannes Berg { 357157fa5e85SJohannes Berg struct ieee80211_local *local = sdata->local; 357257fa5e85SJohannes Berg struct ieee80211_supported_band *sband; 357357fa5e85SJohannes Berg enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 357457fa5e85SJohannes Berg const struct ieee80211_sta_he_cap *he_cap; 35755dca295dSIlan Peer const struct ieee80211_sta_eht_cap *eht_cap; 357657fa5e85SJohannes Berg struct cfg80211_chan_def he_chandef = *chandef; 357757fa5e85SJohannes Berg const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3578cb751b7aSWen Gong struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 35795dca295dSIlan Peer bool support_80_80, support_160, support_320; 35805dca295dSIlan Peer u8 he_phy_cap, eht_phy_cap; 358157fa5e85SJohannes Berg u32 freq; 358257fa5e85SJohannes Berg 358357fa5e85SJohannes Berg if (chandef->chan->band != NL80211_BAND_6GHZ) 358457fa5e85SJohannes Berg return true; 358557fa5e85SJohannes Berg 358657fa5e85SJohannes Berg sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 358757fa5e85SJohannes Berg 358857fa5e85SJohannes Berg he_cap = ieee80211_get_he_iftype_cap(sband, iftype); 358957fa5e85SJohannes Berg if (!he_cap) { 359057fa5e85SJohannes Berg sdata_info(sdata, "Missing iftype sband data/HE cap"); 359157fa5e85SJohannes Berg return false; 359257fa5e85SJohannes Berg } 359357fa5e85SJohannes Berg 359457fa5e85SJohannes Berg he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0]; 359557fa5e85SJohannes Berg support_160 = 359657fa5e85SJohannes Berg he_phy_cap & 359757fa5e85SJohannes Berg IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 359857fa5e85SJohannes Berg support_80_80 = 359957fa5e85SJohannes Berg he_phy_cap & 360057fa5e85SJohannes Berg IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 360157fa5e85SJohannes Berg 360257fa5e85SJohannes Berg if (!he_oper) { 360357fa5e85SJohannes Berg sdata_info(sdata, 360457fa5e85SJohannes Berg "HE is not advertised on (on %d MHz), expect issues\n", 360557fa5e85SJohannes Berg chandef->chan->center_freq); 360657fa5e85SJohannes Berg return false; 360757fa5e85SJohannes Berg } 360857fa5e85SJohannes Berg 36095dca295dSIlan Peer eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype); 36105dca295dSIlan Peer if (!eht_cap) { 36115dca295dSIlan Peer sdata_info(sdata, "Missing iftype sband data/EHT cap"); 36125dca295dSIlan Peer eht_oper = NULL; 36135dca295dSIlan Peer } 36145dca295dSIlan Peer 361557fa5e85SJohannes Berg he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 361657fa5e85SJohannes Berg 361757fa5e85SJohannes Berg if (!he_6ghz_oper) { 361857fa5e85SJohannes Berg sdata_info(sdata, 361957fa5e85SJohannes Berg "HE 6GHz operation missing (on %d MHz), expect issues\n", 362057fa5e85SJohannes Berg chandef->chan->center_freq); 362157fa5e85SJohannes Berg return false; 362257fa5e85SJohannes Berg } 362357fa5e85SJohannes Berg 36245dca295dSIlan Peer /* 36255dca295dSIlan Peer * The EHT operation IE does not contain the primary channel so the 36265dca295dSIlan Peer * primary channel frequency should be taken from the 6 GHz operation 36275dca295dSIlan Peer * information. 36285dca295dSIlan Peer */ 362957fa5e85SJohannes Berg freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 363057fa5e85SJohannes Berg NL80211_BAND_6GHZ); 363157fa5e85SJohannes Berg he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq); 363257fa5e85SJohannes Berg 363357fa5e85SJohannes Berg switch (u8_get_bits(he_6ghz_oper->control, 3634cb751b7aSWen Gong IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) { 3635cb751b7aSWen Gong case IEEE80211_6GHZ_CTRL_REG_LPI_AP: 3636cb751b7aSWen Gong bss_conf->power_type = IEEE80211_REG_LPI_AP; 3637cb751b7aSWen Gong break; 3638cb751b7aSWen Gong case IEEE80211_6GHZ_CTRL_REG_SP_AP: 3639cb751b7aSWen Gong bss_conf->power_type = IEEE80211_REG_SP_AP; 3640cb751b7aSWen Gong break; 3641cb751b7aSWen Gong default: 3642cb751b7aSWen Gong bss_conf->power_type = IEEE80211_REG_UNSET_AP; 3643cb751b7aSWen Gong break; 3644cb751b7aSWen Gong } 3645cb751b7aSWen Gong 36461e0b3b0bSIlan Peer if (!eht_oper || 36471e0b3b0bSIlan Peer !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3648cb751b7aSWen Gong switch (u8_get_bits(he_6ghz_oper->control, 364957fa5e85SJohannes Berg IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 365057fa5e85SJohannes Berg case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 365157fa5e85SJohannes Berg he_chandef.width = NL80211_CHAN_WIDTH_20; 365257fa5e85SJohannes Berg break; 365357fa5e85SJohannes Berg case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 365457fa5e85SJohannes Berg he_chandef.width = NL80211_CHAN_WIDTH_40; 365557fa5e85SJohannes Berg break; 365657fa5e85SJohannes Berg case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 365757fa5e85SJohannes Berg he_chandef.width = NL80211_CHAN_WIDTH_80; 365857fa5e85SJohannes Berg break; 365957fa5e85SJohannes Berg case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 366057fa5e85SJohannes Berg he_chandef.width = NL80211_CHAN_WIDTH_80; 366157fa5e85SJohannes Berg if (!he_6ghz_oper->ccfs1) 366257fa5e85SJohannes Berg break; 366357fa5e85SJohannes Berg if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) { 366457fa5e85SJohannes Berg if (support_160) 366557fa5e85SJohannes Berg he_chandef.width = NL80211_CHAN_WIDTH_160; 366657fa5e85SJohannes Berg } else { 366757fa5e85SJohannes Berg if (support_80_80) 366857fa5e85SJohannes Berg he_chandef.width = NL80211_CHAN_WIDTH_80P80; 366957fa5e85SJohannes Berg } 367057fa5e85SJohannes Berg break; 367157fa5e85SJohannes Berg } 367257fa5e85SJohannes Berg 367357fa5e85SJohannes Berg if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 367457fa5e85SJohannes Berg he_chandef.center_freq1 = 367557fa5e85SJohannes Berg ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 367657fa5e85SJohannes Berg NL80211_BAND_6GHZ); 367757fa5e85SJohannes Berg } else { 367857fa5e85SJohannes Berg he_chandef.center_freq1 = 367957fa5e85SJohannes Berg ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 368057fa5e85SJohannes Berg NL80211_BAND_6GHZ); 368175bcbd69SJohn Crispin if (support_80_80 || support_160) 368257fa5e85SJohannes Berg he_chandef.center_freq2 = 368357fa5e85SJohannes Berg ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 368457fa5e85SJohannes Berg NL80211_BAND_6GHZ); 368557fa5e85SJohannes Berg } 36865dca295dSIlan Peer } else { 36875dca295dSIlan Peer eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0]; 36885dca295dSIlan Peer support_320 = 36895dca295dSIlan Peer eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 36905dca295dSIlan Peer 3691774e00c2SJohannes Berg ieee80211_chandef_eht_oper(eht_oper, support_160, 36921e0b3b0bSIlan Peer support_320, &he_chandef); 36935dca295dSIlan Peer } 369457fa5e85SJohannes Berg 369557fa5e85SJohannes Berg if (!cfg80211_chandef_valid(&he_chandef)) { 369657fa5e85SJohannes Berg sdata_info(sdata, 369757fa5e85SJohannes Berg "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n", 369857fa5e85SJohannes Berg he_chandef.chan ? he_chandef.chan->center_freq : 0, 369957fa5e85SJohannes Berg he_chandef.width, 370057fa5e85SJohannes Berg he_chandef.center_freq1, 370157fa5e85SJohannes Berg he_chandef.center_freq2); 370257fa5e85SJohannes Berg return false; 370357fa5e85SJohannes Berg } 370457fa5e85SJohannes Berg 370557fa5e85SJohannes Berg *chandef = he_chandef; 370657fa5e85SJohannes Berg 37078fca2b87SWen Gong return true; 37081d00ce80SThomas Pedersen } 37091d00ce80SThomas Pedersen 37101d00ce80SThomas Pedersen bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 37111d00ce80SThomas Pedersen struct cfg80211_chan_def *chandef) 37121d00ce80SThomas Pedersen { 37131d00ce80SThomas Pedersen u32 oper_freq; 37141d00ce80SThomas Pedersen 37151d00ce80SThomas Pedersen if (!oper) 37161d00ce80SThomas Pedersen return false; 37171d00ce80SThomas Pedersen 37181d00ce80SThomas Pedersen switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 37191d00ce80SThomas Pedersen case IEEE80211_S1G_CHANWIDTH_1MHZ: 37201d00ce80SThomas Pedersen chandef->width = NL80211_CHAN_WIDTH_1; 37211d00ce80SThomas Pedersen break; 37221d00ce80SThomas Pedersen case IEEE80211_S1G_CHANWIDTH_2MHZ: 37231d00ce80SThomas Pedersen chandef->width = NL80211_CHAN_WIDTH_2; 37241d00ce80SThomas Pedersen break; 37251d00ce80SThomas Pedersen case IEEE80211_S1G_CHANWIDTH_4MHZ: 37261d00ce80SThomas Pedersen chandef->width = NL80211_CHAN_WIDTH_4; 37271d00ce80SThomas Pedersen break; 37281d00ce80SThomas Pedersen case IEEE80211_S1G_CHANWIDTH_8MHZ: 37291d00ce80SThomas Pedersen chandef->width = NL80211_CHAN_WIDTH_8; 37301d00ce80SThomas Pedersen break; 37311d00ce80SThomas Pedersen case IEEE80211_S1G_CHANWIDTH_16MHZ: 37321d00ce80SThomas Pedersen chandef->width = NL80211_CHAN_WIDTH_16; 37331d00ce80SThomas Pedersen break; 37341d00ce80SThomas Pedersen default: 37351d00ce80SThomas Pedersen return false; 37361d00ce80SThomas Pedersen } 37371d00ce80SThomas Pedersen 37381d00ce80SThomas Pedersen oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch, 37391d00ce80SThomas Pedersen NL80211_BAND_S1GHZ); 37401d00ce80SThomas Pedersen chandef->center_freq1 = KHZ_TO_MHZ(oper_freq); 37411d00ce80SThomas Pedersen chandef->freq1_offset = oper_freq % 1000; 37421d00ce80SThomas Pedersen 374357fa5e85SJohannes Berg return true; 374457fa5e85SJohannes Berg } 374557fa5e85SJohannes Berg 37463dc05935SJohannes Berg int ieee80211_parse_bitrates(enum nl80211_chan_width width, 37472103dec1SSimon Wunderlich const struct ieee80211_supported_band *sband, 37482103dec1SSimon Wunderlich const u8 *srates, int srates_len, u32 *rates) 37492103dec1SSimon Wunderlich { 37503dc05935SJohannes Berg u32 rate_flags = ieee80211_chanwidth_rate_flags(width); 37513dc05935SJohannes Berg int shift = ieee80211_chanwidth_get_shift(width); 37522103dec1SSimon Wunderlich struct ieee80211_rate *br; 37532103dec1SSimon Wunderlich int brate, rate, i, j, count = 0; 37542103dec1SSimon Wunderlich 37552103dec1SSimon Wunderlich *rates = 0; 37562103dec1SSimon Wunderlich 37572103dec1SSimon Wunderlich for (i = 0; i < srates_len; i++) { 37582103dec1SSimon Wunderlich rate = srates[i] & 0x7f; 37592103dec1SSimon Wunderlich 37602103dec1SSimon Wunderlich for (j = 0; j < sband->n_bitrates; j++) { 37612103dec1SSimon Wunderlich br = &sband->bitrates[j]; 37622103dec1SSimon Wunderlich if ((rate_flags & br->flags) != rate_flags) 37632103dec1SSimon Wunderlich continue; 37642103dec1SSimon Wunderlich 37652103dec1SSimon Wunderlich brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); 37662103dec1SSimon Wunderlich if (brate == rate) { 37672103dec1SSimon Wunderlich *rates |= BIT(j); 37682103dec1SSimon Wunderlich count++; 37692103dec1SSimon Wunderlich break; 37702103dec1SSimon Wunderlich } 37712103dec1SSimon Wunderlich } 37722103dec1SSimon Wunderlich } 37732103dec1SSimon Wunderlich return count; 37742103dec1SSimon Wunderlich } 37752103dec1SSimon Wunderlich 3776fc8a7321SJohannes Berg int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 37776b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 377857fbcce3SJohannes Berg enum nl80211_band band) 3779768db343SArik Nemtsov { 3780768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 3781768db343SArik Nemtsov struct ieee80211_supported_band *sband; 37822103dec1SSimon Wunderlich int rate, shift; 3783768db343SArik Nemtsov u8 i, rates, *pos; 3784fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 37852103dec1SSimon Wunderlich u32 rate_flags; 3786768db343SArik Nemtsov 37872103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 37882103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 37896b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 37902103dec1SSimon Wunderlich rates = 0; 37912103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 37922103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 37932103dec1SSimon Wunderlich continue; 37942103dec1SSimon Wunderlich rates++; 37952103dec1SSimon Wunderlich } 3796768db343SArik Nemtsov if (rates > 8) 3797768db343SArik Nemtsov rates = 8; 3798768db343SArik Nemtsov 3799768db343SArik Nemtsov if (skb_tailroom(skb) < rates + 2) 3800768db343SArik Nemtsov return -ENOMEM; 3801768db343SArik Nemtsov 3802768db343SArik Nemtsov pos = skb_put(skb, rates + 2); 3803768db343SArik Nemtsov *pos++ = WLAN_EID_SUPP_RATES; 3804768db343SArik Nemtsov *pos++ = rates; 3805768db343SArik Nemtsov for (i = 0; i < rates; i++) { 3806657c3e0cSAshok Nagarajan u8 basic = 0; 38072103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 38082103dec1SSimon Wunderlich continue; 38092103dec1SSimon Wunderlich 3810657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 3811657c3e0cSAshok Nagarajan basic = 0x80; 38122103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 38132103dec1SSimon Wunderlich 5 * (1 << shift)); 38142103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 3815768db343SArik Nemtsov } 3816768db343SArik Nemtsov 3817768db343SArik Nemtsov return 0; 3818768db343SArik Nemtsov } 3819768db343SArik Nemtsov 3820fc8a7321SJohannes Berg int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 38216b77863bSJohannes Berg struct sk_buff *skb, bool need_basic, 382257fbcce3SJohannes Berg enum nl80211_band band) 3823768db343SArik Nemtsov { 3824768db343SArik Nemtsov struct ieee80211_local *local = sdata->local; 3825768db343SArik Nemtsov struct ieee80211_supported_band *sband; 3826cc63ec76SChun-Yeow Yeoh int rate, shift; 3827768db343SArik Nemtsov u8 i, exrates, *pos; 3828fc8a7321SJohannes Berg u32 basic_rates = sdata->vif.bss_conf.basic_rates; 38292103dec1SSimon Wunderlich u32 rate_flags; 38302103dec1SSimon Wunderlich 38312103dec1SSimon Wunderlich rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 38322103dec1SSimon Wunderlich shift = ieee80211_vif_get_shift(&sdata->vif); 3833768db343SArik Nemtsov 38346b77863bSJohannes Berg sband = local->hw.wiphy->bands[band]; 38352103dec1SSimon Wunderlich exrates = 0; 38362103dec1SSimon Wunderlich for (i = 0; i < sband->n_bitrates; i++) { 38372103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 38382103dec1SSimon Wunderlich continue; 38392103dec1SSimon Wunderlich exrates++; 38402103dec1SSimon Wunderlich } 38412103dec1SSimon Wunderlich 3842768db343SArik Nemtsov if (exrates > 8) 3843768db343SArik Nemtsov exrates -= 8; 3844768db343SArik Nemtsov else 3845768db343SArik Nemtsov exrates = 0; 3846768db343SArik Nemtsov 3847768db343SArik Nemtsov if (skb_tailroom(skb) < exrates + 2) 3848768db343SArik Nemtsov return -ENOMEM; 3849768db343SArik Nemtsov 3850768db343SArik Nemtsov if (exrates) { 3851768db343SArik Nemtsov pos = skb_put(skb, exrates + 2); 3852768db343SArik Nemtsov *pos++ = WLAN_EID_EXT_SUPP_RATES; 3853768db343SArik Nemtsov *pos++ = exrates; 3854768db343SArik Nemtsov for (i = 8; i < sband->n_bitrates; i++) { 3855657c3e0cSAshok Nagarajan u8 basic = 0; 38562103dec1SSimon Wunderlich if ((rate_flags & sband->bitrates[i].flags) 38572103dec1SSimon Wunderlich != rate_flags) 38582103dec1SSimon Wunderlich continue; 3859657c3e0cSAshok Nagarajan if (need_basic && basic_rates & BIT(i)) 3860657c3e0cSAshok Nagarajan basic = 0x80; 38612103dec1SSimon Wunderlich rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 38622103dec1SSimon Wunderlich 5 * (1 << shift)); 38632103dec1SSimon Wunderlich *pos++ = basic | (u8) rate; 3864768db343SArik Nemtsov } 3865768db343SArik Nemtsov } 3866768db343SArik Nemtsov return 0; 3867768db343SArik Nemtsov } 38681dae27f8SWey-Yi Guy 38691dae27f8SWey-Yi Guy int ieee80211_ave_rssi(struct ieee80211_vif *vif) 38701dae27f8SWey-Yi Guy { 38711dae27f8SWey-Yi Guy struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 38721dae27f8SWey-Yi Guy 3873bfd8403aSJohannes Berg if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3874be6bcabcSWey-Yi Guy return 0; 3875bfd8403aSJohannes Berg 3876bfd8403aSJohannes Berg return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal); 38771dae27f8SWey-Yi Guy } 38780d8a0a17SWey-Yi Guy EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 387904ecd257SJohannes Berg 388004ecd257SJohannes Berg u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 388104ecd257SJohannes Berg { 388204ecd257SJohannes Berg if (!mcs) 388304ecd257SJohannes Berg return 1; 388404ecd257SJohannes Berg 388504ecd257SJohannes Berg /* TODO: consider rx_highest */ 388604ecd257SJohannes Berg 388704ecd257SJohannes Berg if (mcs->rx_mask[3]) 388804ecd257SJohannes Berg return 4; 388904ecd257SJohannes Berg if (mcs->rx_mask[2]) 389004ecd257SJohannes Berg return 3; 389104ecd257SJohannes Berg if (mcs->rx_mask[1]) 389204ecd257SJohannes Berg return 2; 389304ecd257SJohannes Berg return 1; 389404ecd257SJohannes Berg } 3895f4bda337SThomas Pedersen 3896f4bda337SThomas Pedersen /** 3897f4bda337SThomas Pedersen * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 3898f4bda337SThomas Pedersen * @local: mac80211 hw info struct 3899f4bda337SThomas Pedersen * @status: RX status 3900f4bda337SThomas Pedersen * @mpdu_len: total MPDU length (including FCS) 3901f4bda337SThomas Pedersen * @mpdu_offset: offset into MPDU to calculate timestamp at 3902f4bda337SThomas Pedersen * 3903f4bda337SThomas Pedersen * This function calculates the RX timestamp at the given MPDU offset, taking 3904f4bda337SThomas Pedersen * into account what the RX timestamp was. An offset of 0 will just normalize 3905f4bda337SThomas Pedersen * the timestamp to TSF at beginning of MPDU reception. 3906f4bda337SThomas Pedersen */ 3907f4bda337SThomas Pedersen u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 3908f4bda337SThomas Pedersen struct ieee80211_rx_status *status, 3909f4bda337SThomas Pedersen unsigned int mpdu_len, 3910f4bda337SThomas Pedersen unsigned int mpdu_offset) 3911f4bda337SThomas Pedersen { 3912f4bda337SThomas Pedersen u64 ts = status->mactime; 3913f4bda337SThomas Pedersen struct rate_info ri; 3914f4bda337SThomas Pedersen u16 rate; 3915da388233SAvraham Stern u8 n_ltf; 3916f4bda337SThomas Pedersen 3917f4bda337SThomas Pedersen if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3918f4bda337SThomas Pedersen return 0; 3919f4bda337SThomas Pedersen 3920f4bda337SThomas Pedersen memset(&ri, 0, sizeof(ri)); 3921f4bda337SThomas Pedersen 392235f4962cSJohannes Berg ri.bw = status->bw; 392335f4962cSJohannes Berg 3924f4bda337SThomas Pedersen /* Fill cfg80211 rate info */ 3925da6a4352SJohannes Berg switch (status->encoding) { 3926da388233SAvraham Stern case RX_ENC_HE: 3927da388233SAvraham Stern ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3928da388233SAvraham Stern ri.mcs = status->rate_idx; 3929da388233SAvraham Stern ri.nss = status->nss; 3930da388233SAvraham Stern ri.he_ru_alloc = status->he_ru; 3931da388233SAvraham Stern if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3932da388233SAvraham Stern ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3933da388233SAvraham Stern 3934da388233SAvraham Stern /* 3935da388233SAvraham Stern * See P802.11ax_D6.0, section 27.3.4 for 3936da388233SAvraham Stern * VHT PPDU format. 3937da388233SAvraham Stern */ 3938da388233SAvraham Stern if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 3939da388233SAvraham Stern mpdu_offset += 2; 3940da388233SAvraham Stern ts += 36; 3941da388233SAvraham Stern 3942da388233SAvraham Stern /* 3943da388233SAvraham Stern * TODO: 3944da388233SAvraham Stern * For HE MU PPDU, add the HE-SIG-B. 3945da388233SAvraham Stern * For HE ER PPDU, add 8us for the HE-SIG-A. 3946da388233SAvraham Stern * For HE TB PPDU, add 4us for the HE-STF. 3947da388233SAvraham Stern * Add the HE-LTF durations - variable. 3948da388233SAvraham Stern */ 3949da388233SAvraham Stern } 3950da388233SAvraham Stern 3951da388233SAvraham Stern break; 3952da6a4352SJohannes Berg case RX_ENC_HT: 3953f4bda337SThomas Pedersen ri.mcs = status->rate_idx; 3954f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_MCS; 39557fdd69c5SJohannes Berg if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3956f4bda337SThomas Pedersen ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3957da388233SAvraham Stern 3958da388233SAvraham Stern /* 3959da388233SAvraham Stern * See P802.11REVmd_D3.0, section 19.3.2 for 3960da388233SAvraham Stern * HT PPDU format. 3961da388233SAvraham Stern */ 3962da388233SAvraham Stern if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 3963da388233SAvraham Stern mpdu_offset += 2; 3964da388233SAvraham Stern if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3965da388233SAvraham Stern ts += 24; 3966da388233SAvraham Stern else 3967da388233SAvraham Stern ts += 32; 3968da388233SAvraham Stern 3969da388233SAvraham Stern /* 3970da388233SAvraham Stern * Add Data HT-LTFs per streams 3971da388233SAvraham Stern * TODO: add Extension HT-LTFs, 4us per LTF 3972da388233SAvraham Stern */ 3973da388233SAvraham Stern n_ltf = ((ri.mcs >> 3) & 3) + 1; 3974da388233SAvraham Stern n_ltf = n_ltf == 3 ? 4 : n_ltf; 3975da388233SAvraham Stern ts += n_ltf * 4; 3976da388233SAvraham Stern } 3977da388233SAvraham Stern 3978da6a4352SJohannes Berg break; 3979da6a4352SJohannes Berg case RX_ENC_VHT: 39805614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 39815614618eSJohannes Berg ri.mcs = status->rate_idx; 39828613c948SJohannes Berg ri.nss = status->nss; 39837fdd69c5SJohannes Berg if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 39845614618eSJohannes Berg ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3985da388233SAvraham Stern 3986da388233SAvraham Stern /* 3987da388233SAvraham Stern * See P802.11REVmd_D3.0, section 21.3.2 for 3988da388233SAvraham Stern * VHT PPDU format. 3989da388233SAvraham Stern */ 3990da388233SAvraham Stern if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 3991da388233SAvraham Stern mpdu_offset += 2; 3992da388233SAvraham Stern ts += 36; 3993da388233SAvraham Stern 3994da388233SAvraham Stern /* 3995da388233SAvraham Stern * Add VHT-LTFs per streams 3996da388233SAvraham Stern */ 3997da388233SAvraham Stern n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3998da388233SAvraham Stern ri.nss + 1 : ri.nss; 3999da388233SAvraham Stern ts += 4 * n_ltf; 4000da388233SAvraham Stern } 4001da388233SAvraham Stern 4002da6a4352SJohannes Berg break; 4003da6a4352SJohannes Berg default: 4004da6a4352SJohannes Berg WARN_ON(1); 4005fc0561dcSGustavo A. R. Silva fallthrough; 4006da6a4352SJohannes Berg case RX_ENC_LEGACY: { 4007f4bda337SThomas Pedersen struct ieee80211_supported_band *sband; 40082103dec1SSimon Wunderlich int shift = 0; 40092103dec1SSimon Wunderlich int bitrate; 40102103dec1SSimon Wunderlich 4011da6a4352SJohannes Berg switch (status->bw) { 4012da6a4352SJohannes Berg case RATE_INFO_BW_10: 40132103dec1SSimon Wunderlich shift = 1; 4014da6a4352SJohannes Berg break; 4015da6a4352SJohannes Berg case RATE_INFO_BW_5: 40162103dec1SSimon Wunderlich shift = 2; 4017da6a4352SJohannes Berg break; 4018b51f3beeSJohannes Berg } 4019f4bda337SThomas Pedersen 4020f4bda337SThomas Pedersen sband = local->hw.wiphy->bands[status->band]; 40212103dec1SSimon Wunderlich bitrate = sband->bitrates[status->rate_idx].bitrate; 40222103dec1SSimon Wunderlich ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); 4023f4a0f0c5SJohannes Berg 4024f4a0f0c5SJohannes Berg if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 402557fbcce3SJohannes Berg if (status->band == NL80211_BAND_5GHZ) { 4026f4a0f0c5SJohannes Berg ts += 20 << shift; 4027f4a0f0c5SJohannes Berg mpdu_offset += 2; 40287fdd69c5SJohannes Berg } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 4029f4a0f0c5SJohannes Berg ts += 96; 4030f4a0f0c5SJohannes Berg } else { 4031f4a0f0c5SJohannes Berg ts += 192; 4032f4a0f0c5SJohannes Berg } 4033f4a0f0c5SJohannes Berg } 4034da6a4352SJohannes Berg break; 4035da6a4352SJohannes Berg } 4036f4bda337SThomas Pedersen } 4037f4bda337SThomas Pedersen 4038f4bda337SThomas Pedersen rate = cfg80211_calculate_bitrate(&ri); 4039d86aa4f8SJohannes Berg if (WARN_ONCE(!rate, 4040f980ebc0SSara Sharon "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 4041f980ebc0SSara Sharon (unsigned long long)status->flag, status->rate_idx, 40428613c948SJohannes Berg status->nss)) 4043d86aa4f8SJohannes Berg return 0; 4044f4bda337SThomas Pedersen 4045f4bda337SThomas Pedersen /* rewind from end of MPDU */ 4046f4bda337SThomas Pedersen if (status->flag & RX_FLAG_MACTIME_END) 4047f4bda337SThomas Pedersen ts -= mpdu_len * 8 * 10 / rate; 4048f4bda337SThomas Pedersen 4049f4bda337SThomas Pedersen ts += mpdu_offset * 8 * 10 / rate; 4050f4bda337SThomas Pedersen 4051f4bda337SThomas Pedersen return ts; 4052f4bda337SThomas Pedersen } 4053164eb02dSSimon Wunderlich 4054164eb02dSSimon Wunderlich void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 4055164eb02dSSimon Wunderlich { 4056164eb02dSSimon Wunderlich struct ieee80211_sub_if_data *sdata; 4057d2859df5SJanusz Dziedzic struct cfg80211_chan_def chandef; 4058164eb02dSSimon Wunderlich 40594a199068SJohannes Berg /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */ 4060a05829a7SJohannes Berg lockdep_assert_wiphy(local->hw.wiphy); 40614a199068SJohannes Berg 406234a3740dSJohannes Berg mutex_lock(&local->mtx); 4063164eb02dSSimon Wunderlich list_for_each_entry(sdata, &local->interfaces, list) { 406434a3740dSJohannes Berg /* it might be waiting for the local->mtx, but then 406534a3740dSJohannes Berg * by the time it gets it, sdata->wdev.cac_started 406634a3740dSJohannes Berg * will no longer be true 406734a3740dSJohannes Berg */ 4068bfd8403aSJohannes Berg cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work); 4069164eb02dSSimon Wunderlich 4070164eb02dSSimon Wunderlich if (sdata->wdev.cac_started) { 4071d2859df5SJanusz Dziedzic chandef = sdata->vif.bss_conf.chandef; 4072d8675a63SJohannes Berg ieee80211_link_release_channel(&sdata->deflink); 4073164eb02dSSimon Wunderlich cfg80211_cac_event(sdata->dev, 4074d2859df5SJanusz Dziedzic &chandef, 4075164eb02dSSimon Wunderlich NL80211_RADAR_CAC_ABORTED, 4076164eb02dSSimon Wunderlich GFP_KERNEL); 4077164eb02dSSimon Wunderlich } 4078164eb02dSSimon Wunderlich } 407934a3740dSJohannes Berg mutex_unlock(&local->mtx); 4080164eb02dSSimon Wunderlich } 4081164eb02dSSimon Wunderlich 4082164eb02dSSimon Wunderlich void ieee80211_dfs_radar_detected_work(struct work_struct *work) 4083164eb02dSSimon Wunderlich { 4084164eb02dSSimon Wunderlich struct ieee80211_local *local = 4085164eb02dSSimon Wunderlich container_of(work, struct ieee80211_local, radar_detected_work); 408684a3d1c9SJanusz Dziedzic struct cfg80211_chan_def chandef = local->hw.conf.chandef; 4087486cf4c0SMichal Kazior struct ieee80211_chanctx *ctx; 4088486cf4c0SMichal Kazior int num_chanctx = 0; 4089486cf4c0SMichal Kazior 4090486cf4c0SMichal Kazior mutex_lock(&local->chanctx_mtx); 4091486cf4c0SMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 4092486cf4c0SMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 4093486cf4c0SMichal Kazior continue; 4094486cf4c0SMichal Kazior 4095486cf4c0SMichal Kazior num_chanctx++; 4096486cf4c0SMichal Kazior chandef = ctx->conf.def; 4097486cf4c0SMichal Kazior } 4098486cf4c0SMichal Kazior mutex_unlock(&local->chanctx_mtx); 4099164eb02dSSimon Wunderlich 4100a05829a7SJohannes Berg wiphy_lock(local->hw.wiphy); 4101164eb02dSSimon Wunderlich ieee80211_dfs_cac_cancel(local); 4102a05829a7SJohannes Berg wiphy_unlock(local->hw.wiphy); 4103164eb02dSSimon Wunderlich 4104486cf4c0SMichal Kazior if (num_chanctx > 1) 4105486cf4c0SMichal Kazior /* XXX: multi-channel is not supported yet */ 4106164eb02dSSimon Wunderlich WARN_ON(1); 410784a3d1c9SJanusz Dziedzic else 4108164eb02dSSimon Wunderlich cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 4109164eb02dSSimon Wunderlich } 4110164eb02dSSimon Wunderlich 4111164eb02dSSimon Wunderlich void ieee80211_radar_detected(struct ieee80211_hw *hw) 4112164eb02dSSimon Wunderlich { 4113164eb02dSSimon Wunderlich struct ieee80211_local *local = hw_to_local(hw); 4114164eb02dSSimon Wunderlich 4115164eb02dSSimon Wunderlich trace_api_radar_detected(local); 4116164eb02dSSimon Wunderlich 41174a199068SJohannes Berg schedule_work(&local->radar_detected_work); 4118164eb02dSSimon Wunderlich } 4119164eb02dSSimon Wunderlich EXPORT_SYMBOL(ieee80211_radar_detected); 4120e6b7cde4SSimon Wunderlich 4121ba323e29SJohannes Berg ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) 4122e6b7cde4SSimon Wunderlich { 4123ba323e29SJohannes Berg ieee80211_conn_flags_t ret; 4124e6b7cde4SSimon Wunderlich int tmp; 4125e6b7cde4SSimon Wunderlich 4126e6b7cde4SSimon Wunderlich switch (c->width) { 4127e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20: 4128e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 4129ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT; 4130e6b7cde4SSimon Wunderlich break; 4131e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_40: 4132e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20; 4133e6b7cde4SSimon Wunderlich c->center_freq1 = c->chan->center_freq; 4134ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_40MHZ | 4135ba323e29SJohannes Berg IEEE80211_CONN_DISABLE_VHT; 4136e6b7cde4SSimon Wunderlich break; 4137e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80: 4138e6b7cde4SSimon Wunderlich tmp = (30 + c->chan->center_freq - c->center_freq1)/20; 4139e6b7cde4SSimon Wunderlich /* n_P40 */ 4140e6b7cde4SSimon Wunderlich tmp /= 2; 4141e6b7cde4SSimon Wunderlich /* freq_P40 */ 4142e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; 4143e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_40; 4144ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_VHT; 4145e6b7cde4SSimon Wunderlich break; 4146e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_80P80: 4147e6b7cde4SSimon Wunderlich c->center_freq2 = 0; 4148e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 4149ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_80P80MHZ | 4150ba323e29SJohannes Berg IEEE80211_CONN_DISABLE_160MHZ; 4151e6b7cde4SSimon Wunderlich break; 4152e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_160: 4153e6b7cde4SSimon Wunderlich /* n_P20 */ 4154e6b7cde4SSimon Wunderlich tmp = (70 + c->chan->center_freq - c->center_freq1)/20; 4155e6b7cde4SSimon Wunderlich /* n_P80 */ 4156e6b7cde4SSimon Wunderlich tmp /= 4; 4157e6b7cde4SSimon Wunderlich c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; 4158e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_80; 4159ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_80P80MHZ | 4160ba323e29SJohannes Berg IEEE80211_CONN_DISABLE_160MHZ; 4161e6b7cde4SSimon Wunderlich break; 41625dca295dSIlan Peer case NL80211_CHAN_WIDTH_320: 41635dca295dSIlan Peer /* n_P20 */ 41645dca295dSIlan Peer tmp = (150 + c->chan->center_freq - c->center_freq1) / 20; 41655dca295dSIlan Peer /* n_P160 */ 416668608f99SMeiChia Chiu tmp /= 8; 41675dca295dSIlan Peer c->center_freq1 = c->center_freq1 - 80 + 160 * tmp; 41685dca295dSIlan Peer c->width = NL80211_CHAN_WIDTH_160; 4169ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_320MHZ; 41705dca295dSIlan Peer break; 4171e6b7cde4SSimon Wunderlich default: 4172e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_20_NOHT: 4173e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 4174e6b7cde4SSimon Wunderlich c->width = NL80211_CHAN_WIDTH_20_NOHT; 4175ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT; 4176e6b7cde4SSimon Wunderlich break; 4177df78a0c0SThomas Pedersen case NL80211_CHAN_WIDTH_1: 4178df78a0c0SThomas Pedersen case NL80211_CHAN_WIDTH_2: 4179df78a0c0SThomas Pedersen case NL80211_CHAN_WIDTH_4: 4180df78a0c0SThomas Pedersen case NL80211_CHAN_WIDTH_8: 4181df78a0c0SThomas Pedersen case NL80211_CHAN_WIDTH_16: 4182e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_5: 4183e6b7cde4SSimon Wunderlich case NL80211_CHAN_WIDTH_10: 4184e6b7cde4SSimon Wunderlich WARN_ON_ONCE(1); 4185e6b7cde4SSimon Wunderlich /* keep c->width */ 4186ba323e29SJohannes Berg ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT; 4187e6b7cde4SSimon Wunderlich break; 4188e6b7cde4SSimon Wunderlich } 4189e6b7cde4SSimon Wunderlich 4190e6b7cde4SSimon Wunderlich WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 4191e6b7cde4SSimon Wunderlich 4192e6b7cde4SSimon Wunderlich return ret; 4193e6b7cde4SSimon Wunderlich } 4194687da132SEmmanuel Grumbach 4195687da132SEmmanuel Grumbach /* 4196687da132SEmmanuel Grumbach * Returns true if smps_mode_new is strictly more restrictive than 4197687da132SEmmanuel Grumbach * smps_mode_old. 4198687da132SEmmanuel Grumbach */ 4199687da132SEmmanuel Grumbach bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 4200687da132SEmmanuel Grumbach enum ieee80211_smps_mode smps_mode_new) 4201687da132SEmmanuel Grumbach { 4202687da132SEmmanuel Grumbach if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 4203687da132SEmmanuel Grumbach smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 4204687da132SEmmanuel Grumbach return false; 4205687da132SEmmanuel Grumbach 4206687da132SEmmanuel Grumbach switch (smps_mode_old) { 4207687da132SEmmanuel Grumbach case IEEE80211_SMPS_STATIC: 4208687da132SEmmanuel Grumbach return false; 4209687da132SEmmanuel Grumbach case IEEE80211_SMPS_DYNAMIC: 4210687da132SEmmanuel Grumbach return smps_mode_new == IEEE80211_SMPS_STATIC; 4211687da132SEmmanuel Grumbach case IEEE80211_SMPS_OFF: 4212687da132SEmmanuel Grumbach return smps_mode_new != IEEE80211_SMPS_OFF; 4213687da132SEmmanuel Grumbach default: 4214687da132SEmmanuel Grumbach WARN_ON(1); 4215687da132SEmmanuel Grumbach } 4216687da132SEmmanuel Grumbach 4217687da132SEmmanuel Grumbach return false; 4218687da132SEmmanuel Grumbach } 4219c6da674aSChun-Yeow Yeoh 4220c6da674aSChun-Yeow Yeoh int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 4221c6da674aSChun-Yeow Yeoh struct cfg80211_csa_settings *csa_settings) 4222c6da674aSChun-Yeow Yeoh { 4223c6da674aSChun-Yeow Yeoh struct sk_buff *skb; 4224c6da674aSChun-Yeow Yeoh struct ieee80211_mgmt *mgmt; 4225c6da674aSChun-Yeow Yeoh struct ieee80211_local *local = sdata->local; 4226c6da674aSChun-Yeow Yeoh int freq; 42274c121fd6SJohannes Berg int hdr_len = offsetofend(struct ieee80211_mgmt, 42284c121fd6SJohannes Berg u.action.u.chan_switch); 4229c6da674aSChun-Yeow Yeoh u8 *pos; 4230c6da674aSChun-Yeow Yeoh 4231c6da674aSChun-Yeow Yeoh if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 4232c6da674aSChun-Yeow Yeoh sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 4233c6da674aSChun-Yeow Yeoh return -EOPNOTSUPP; 4234c6da674aSChun-Yeow Yeoh 4235c6da674aSChun-Yeow Yeoh skb = dev_alloc_skb(local->tx_headroom + hdr_len + 4236c6da674aSChun-Yeow Yeoh 5 + /* channel switch announcement element */ 4237c6da674aSChun-Yeow Yeoh 3 + /* secondary channel offset element */ 423875d627d5SSimon Wunderlich 5 + /* wide bandwidth channel switch announcement */ 4239c6da674aSChun-Yeow Yeoh 8); /* mesh channel switch parameters element */ 4240c6da674aSChun-Yeow Yeoh if (!skb) 4241c6da674aSChun-Yeow Yeoh return -ENOMEM; 4242c6da674aSChun-Yeow Yeoh 4243c6da674aSChun-Yeow Yeoh skb_reserve(skb, local->tx_headroom); 4244b080db58SJohannes Berg mgmt = skb_put_zero(skb, hdr_len); 4245c6da674aSChun-Yeow Yeoh mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 4246c6da674aSChun-Yeow Yeoh IEEE80211_STYPE_ACTION); 4247c6da674aSChun-Yeow Yeoh 4248c6da674aSChun-Yeow Yeoh eth_broadcast_addr(mgmt->da); 4249c6da674aSChun-Yeow Yeoh memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 4250c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 4251c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 4252c6da674aSChun-Yeow Yeoh } else { 4253c6da674aSChun-Yeow Yeoh struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 4254c6da674aSChun-Yeow Yeoh memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 4255c6da674aSChun-Yeow Yeoh } 4256c6da674aSChun-Yeow Yeoh mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 4257c6da674aSChun-Yeow Yeoh mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 4258c6da674aSChun-Yeow Yeoh pos = skb_put(skb, 5); 4259c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 4260c6da674aSChun-Yeow Yeoh *pos++ = 3; /* IE length */ 4261c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 4262c6da674aSChun-Yeow Yeoh freq = csa_settings->chandef.chan->center_freq; 4263c6da674aSChun-Yeow Yeoh *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 4264c6da674aSChun-Yeow Yeoh *pos++ = csa_settings->count; /* count */ 4265c6da674aSChun-Yeow Yeoh 4266c6da674aSChun-Yeow Yeoh if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 4267c6da674aSChun-Yeow Yeoh enum nl80211_channel_type ch_type; 4268c6da674aSChun-Yeow Yeoh 4269c6da674aSChun-Yeow Yeoh skb_put(skb, 3); 4270c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 4271c6da674aSChun-Yeow Yeoh *pos++ = 1; /* IE length */ 4272c6da674aSChun-Yeow Yeoh ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 4273c6da674aSChun-Yeow Yeoh if (ch_type == NL80211_CHAN_HT40PLUS) 4274c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 4275c6da674aSChun-Yeow Yeoh else 4276c6da674aSChun-Yeow Yeoh *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 4277c6da674aSChun-Yeow Yeoh } 4278c6da674aSChun-Yeow Yeoh 4279c6da674aSChun-Yeow Yeoh if (ieee80211_vif_is_mesh(&sdata->vif)) { 4280c6da674aSChun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 4281c6da674aSChun-Yeow Yeoh 4282c6da674aSChun-Yeow Yeoh skb_put(skb, 8); 4283c6da674aSChun-Yeow Yeoh *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 4284c6da674aSChun-Yeow Yeoh *pos++ = 6; /* IE length */ 4285c6da674aSChun-Yeow Yeoh *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 4286c6da674aSChun-Yeow Yeoh *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 4287c6da674aSChun-Yeow Yeoh *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 4288c6da674aSChun-Yeow Yeoh *pos++ |= csa_settings->block_tx ? 4289c6da674aSChun-Yeow Yeoh WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 4290c6da674aSChun-Yeow Yeoh put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 4291c6da674aSChun-Yeow Yeoh pos += 2; 4292ca91dc97SChun-Yeow Yeoh put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 4293c6da674aSChun-Yeow Yeoh pos += 2; 4294c6da674aSChun-Yeow Yeoh } 4295c6da674aSChun-Yeow Yeoh 429675d627d5SSimon Wunderlich if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 429775d627d5SSimon Wunderlich csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 429875d627d5SSimon Wunderlich csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 429975d627d5SSimon Wunderlich skb_put(skb, 5); 430075d627d5SSimon Wunderlich ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 430175d627d5SSimon Wunderlich } 430275d627d5SSimon Wunderlich 4303c6da674aSChun-Yeow Yeoh ieee80211_tx_skb(sdata, skb); 4304c6da674aSChun-Yeow Yeoh return 0; 4305c6da674aSChun-Yeow Yeoh } 43062475b1ccSMax Stepanov 4307a7022e65SFelix Fietkau static bool 4308a7022e65SFelix Fietkau ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 4309a7022e65SFelix Fietkau { 4310a7022e65SFelix Fietkau s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 4311a7022e65SFelix Fietkau int skip; 4312a7022e65SFelix Fietkau 4313a7022e65SFelix Fietkau if (end > 0) 4314a7022e65SFelix Fietkau return false; 4315a7022e65SFelix Fietkau 4316519ee691SJanusz.Dziedzic@tieto.com /* One shot NOA */ 4317519ee691SJanusz.Dziedzic@tieto.com if (data->count[i] == 1) 4318519ee691SJanusz.Dziedzic@tieto.com return false; 4319519ee691SJanusz.Dziedzic@tieto.com 4320519ee691SJanusz.Dziedzic@tieto.com if (data->desc[i].interval == 0) 4321519ee691SJanusz.Dziedzic@tieto.com return false; 4322519ee691SJanusz.Dziedzic@tieto.com 4323a7022e65SFelix Fietkau /* End time is in the past, check for repetitions */ 4324a7022e65SFelix Fietkau skip = DIV_ROUND_UP(-end, data->desc[i].interval); 4325a7022e65SFelix Fietkau if (data->count[i] < 255) { 4326a7022e65SFelix Fietkau if (data->count[i] <= skip) { 4327a7022e65SFelix Fietkau data->count[i] = 0; 4328a7022e65SFelix Fietkau return false; 4329a7022e65SFelix Fietkau } 4330a7022e65SFelix Fietkau 4331a7022e65SFelix Fietkau data->count[i] -= skip; 4332a7022e65SFelix Fietkau } 4333a7022e65SFelix Fietkau 4334a7022e65SFelix Fietkau data->desc[i].start += skip * data->desc[i].interval; 4335a7022e65SFelix Fietkau 4336a7022e65SFelix Fietkau return true; 4337a7022e65SFelix Fietkau } 4338a7022e65SFelix Fietkau 4339a7022e65SFelix Fietkau static bool 4340a7022e65SFelix Fietkau ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 4341a7022e65SFelix Fietkau s32 *offset) 4342a7022e65SFelix Fietkau { 4343a7022e65SFelix Fietkau bool ret = false; 4344a7022e65SFelix Fietkau int i; 4345a7022e65SFelix Fietkau 4346a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4347a7022e65SFelix Fietkau s32 cur; 4348a7022e65SFelix Fietkau 4349a7022e65SFelix Fietkau if (!data->count[i]) 4350a7022e65SFelix Fietkau continue; 4351a7022e65SFelix Fietkau 4352a7022e65SFelix Fietkau if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 4353a7022e65SFelix Fietkau ret = true; 4354a7022e65SFelix Fietkau 4355a7022e65SFelix Fietkau cur = data->desc[i].start - tsf; 4356a7022e65SFelix Fietkau if (cur > *offset) 4357a7022e65SFelix Fietkau continue; 4358a7022e65SFelix Fietkau 4359a7022e65SFelix Fietkau cur = data->desc[i].start + data->desc[i].duration - tsf; 4360a7022e65SFelix Fietkau if (cur > *offset) 4361a7022e65SFelix Fietkau *offset = cur; 4362a7022e65SFelix Fietkau } 4363a7022e65SFelix Fietkau 4364a7022e65SFelix Fietkau return ret; 4365a7022e65SFelix Fietkau } 4366a7022e65SFelix Fietkau 4367a7022e65SFelix Fietkau static u32 4368a7022e65SFelix Fietkau ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 4369a7022e65SFelix Fietkau { 4370a7022e65SFelix Fietkau s32 offset = 0; 4371a7022e65SFelix Fietkau int tries = 0; 4372a7022e65SFelix Fietkau /* 4373a7022e65SFelix Fietkau * arbitrary limit, used to avoid infinite loops when combined NoA 4374a7022e65SFelix Fietkau * descriptors cover the full time period. 4375a7022e65SFelix Fietkau */ 4376a7022e65SFelix Fietkau int max_tries = 5; 4377a7022e65SFelix Fietkau 4378a7022e65SFelix Fietkau ieee80211_extend_absent_time(data, tsf, &offset); 4379a7022e65SFelix Fietkau do { 4380a7022e65SFelix Fietkau if (!ieee80211_extend_absent_time(data, tsf, &offset)) 4381a7022e65SFelix Fietkau break; 4382a7022e65SFelix Fietkau 4383a7022e65SFelix Fietkau tries++; 4384a7022e65SFelix Fietkau } while (tries < max_tries); 4385a7022e65SFelix Fietkau 4386a7022e65SFelix Fietkau return offset; 4387a7022e65SFelix Fietkau } 4388a7022e65SFelix Fietkau 4389a7022e65SFelix Fietkau void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 4390a7022e65SFelix Fietkau { 4391a7022e65SFelix Fietkau u32 next_offset = BIT(31) - 1; 4392a7022e65SFelix Fietkau int i; 4393a7022e65SFelix Fietkau 4394a7022e65SFelix Fietkau data->absent = 0; 4395a7022e65SFelix Fietkau data->has_next_tsf = false; 4396a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4397a7022e65SFelix Fietkau s32 start; 4398a7022e65SFelix Fietkau 4399a7022e65SFelix Fietkau if (!data->count[i]) 4400a7022e65SFelix Fietkau continue; 4401a7022e65SFelix Fietkau 4402a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 4403a7022e65SFelix Fietkau start = data->desc[i].start - tsf; 4404a7022e65SFelix Fietkau if (start <= 0) 4405a7022e65SFelix Fietkau data->absent |= BIT(i); 4406a7022e65SFelix Fietkau 4407a7022e65SFelix Fietkau if (next_offset > start) 4408a7022e65SFelix Fietkau next_offset = start; 4409a7022e65SFelix Fietkau 4410a7022e65SFelix Fietkau data->has_next_tsf = true; 4411a7022e65SFelix Fietkau } 4412a7022e65SFelix Fietkau 4413a7022e65SFelix Fietkau if (data->absent) 4414a7022e65SFelix Fietkau next_offset = ieee80211_get_noa_absent_time(data, tsf); 4415a7022e65SFelix Fietkau 4416a7022e65SFelix Fietkau data->next_tsf = tsf + next_offset; 4417a7022e65SFelix Fietkau } 4418a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_update_p2p_noa); 4419a7022e65SFelix Fietkau 4420a7022e65SFelix Fietkau int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 4421a7022e65SFelix Fietkau struct ieee80211_noa_data *data, u32 tsf) 4422a7022e65SFelix Fietkau { 4423a7022e65SFelix Fietkau int ret = 0; 4424a7022e65SFelix Fietkau int i; 4425a7022e65SFelix Fietkau 4426a7022e65SFelix Fietkau memset(data, 0, sizeof(*data)); 4427a7022e65SFelix Fietkau 4428a7022e65SFelix Fietkau for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4429a7022e65SFelix Fietkau const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 4430a7022e65SFelix Fietkau 4431a7022e65SFelix Fietkau if (!desc->count || !desc->duration) 4432a7022e65SFelix Fietkau continue; 4433a7022e65SFelix Fietkau 4434a7022e65SFelix Fietkau data->count[i] = desc->count; 4435a7022e65SFelix Fietkau data->desc[i].start = le32_to_cpu(desc->start_time); 4436a7022e65SFelix Fietkau data->desc[i].duration = le32_to_cpu(desc->duration); 4437a7022e65SFelix Fietkau data->desc[i].interval = le32_to_cpu(desc->interval); 4438a7022e65SFelix Fietkau 4439a7022e65SFelix Fietkau if (data->count[i] > 1 && 4440a7022e65SFelix Fietkau data->desc[i].interval < data->desc[i].duration) 4441a7022e65SFelix Fietkau continue; 4442a7022e65SFelix Fietkau 4443a7022e65SFelix Fietkau ieee80211_extend_noa_desc(data, tsf, i); 4444a7022e65SFelix Fietkau ret++; 4445a7022e65SFelix Fietkau } 4446a7022e65SFelix Fietkau 4447a7022e65SFelix Fietkau if (ret) 4448a7022e65SFelix Fietkau ieee80211_update_p2p_noa(data, tsf); 4449a7022e65SFelix Fietkau 4450a7022e65SFelix Fietkau return ret; 4451a7022e65SFelix Fietkau } 4452a7022e65SFelix Fietkau EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 4453057d5f4bSThomas Pedersen 4454057d5f4bSThomas Pedersen void ieee80211_recalc_dtim(struct ieee80211_local *local, 4455057d5f4bSThomas Pedersen struct ieee80211_sub_if_data *sdata) 4456057d5f4bSThomas Pedersen { 4457057d5f4bSThomas Pedersen u64 tsf = drv_get_tsf(local, sdata); 4458057d5f4bSThomas Pedersen u64 dtim_count = 0; 4459057d5f4bSThomas Pedersen u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4460057d5f4bSThomas Pedersen u8 dtim_period = sdata->vif.bss_conf.dtim_period; 4461057d5f4bSThomas Pedersen struct ps_data *ps; 4462057d5f4bSThomas Pedersen u8 bcns_from_dtim; 4463057d5f4bSThomas Pedersen 4464057d5f4bSThomas Pedersen if (tsf == -1ULL || !beacon_int || !dtim_period) 4465057d5f4bSThomas Pedersen return; 4466057d5f4bSThomas Pedersen 4467057d5f4bSThomas Pedersen if (sdata->vif.type == NL80211_IFTYPE_AP || 4468057d5f4bSThomas Pedersen sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 4469057d5f4bSThomas Pedersen if (!sdata->bss) 4470057d5f4bSThomas Pedersen return; 4471057d5f4bSThomas Pedersen 4472057d5f4bSThomas Pedersen ps = &sdata->bss->ps; 4473057d5f4bSThomas Pedersen } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 4474057d5f4bSThomas Pedersen ps = &sdata->u.mesh.ps; 4475057d5f4bSThomas Pedersen } else { 4476057d5f4bSThomas Pedersen return; 4477057d5f4bSThomas Pedersen } 4478057d5f4bSThomas Pedersen 4479057d5f4bSThomas Pedersen /* 4480057d5f4bSThomas Pedersen * actually finds last dtim_count, mac80211 will update in 4481057d5f4bSThomas Pedersen * __beacon_add_tim(). 4482057d5f4bSThomas Pedersen * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 4483057d5f4bSThomas Pedersen */ 4484057d5f4bSThomas Pedersen do_div(tsf, beacon_int); 4485057d5f4bSThomas Pedersen bcns_from_dtim = do_div(tsf, dtim_period); 4486057d5f4bSThomas Pedersen /* just had a DTIM */ 4487057d5f4bSThomas Pedersen if (!bcns_from_dtim) 4488057d5f4bSThomas Pedersen dtim_count = 0; 4489057d5f4bSThomas Pedersen else 4490057d5f4bSThomas Pedersen dtim_count = dtim_period - bcns_from_dtim; 4491057d5f4bSThomas Pedersen 4492057d5f4bSThomas Pedersen ps->dtim_count = dtim_count; 4493057d5f4bSThomas Pedersen } 449473de86a3SLuciano Coelho 449571e6195eSMichal Kazior static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 449671e6195eSMichal Kazior struct ieee80211_chanctx *ctx) 449771e6195eSMichal Kazior { 4498b4f85443SJohannes Berg struct ieee80211_link_data *link; 449971e6195eSMichal Kazior u8 radar_detect = 0; 450071e6195eSMichal Kazior 450171e6195eSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 450271e6195eSMichal Kazior 450371e6195eSMichal Kazior if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 450471e6195eSMichal Kazior return 0; 450571e6195eSMichal Kazior 4506b4f85443SJohannes Berg list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) 4507b4f85443SJohannes Berg if (link->reserved_radar_required) 4508b4f85443SJohannes Berg radar_detect |= BIT(link->reserved_chandef.width); 450971e6195eSMichal Kazior 451071e6195eSMichal Kazior /* 451171e6195eSMichal Kazior * An in-place reservation context should not have any assigned vifs 451271e6195eSMichal Kazior * until it replaces the other context. 451371e6195eSMichal Kazior */ 451471e6195eSMichal Kazior WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 4515b4f85443SJohannes Berg !list_empty(&ctx->assigned_links)); 451671e6195eSMichal Kazior 4517b4f85443SJohannes Berg list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { 4518b4f85443SJohannes Berg if (!link->radar_required) 4519b4f85443SJohannes Berg continue; 4520b4f85443SJohannes Berg 4521b4f85443SJohannes Berg radar_detect |= 4522d8675a63SJohannes Berg BIT(link->conf->chandef.width); 4523b4f85443SJohannes Berg } 452471e6195eSMichal Kazior 452571e6195eSMichal Kazior return radar_detect; 452671e6195eSMichal Kazior } 452771e6195eSMichal Kazior 452873de86a3SLuciano Coelho int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 452973de86a3SLuciano Coelho const struct cfg80211_chan_def *chandef, 453073de86a3SLuciano Coelho enum ieee80211_chanctx_mode chanmode, 453173de86a3SLuciano Coelho u8 radar_detect) 453273de86a3SLuciano Coelho { 453373de86a3SLuciano Coelho struct ieee80211_local *local = sdata->local; 453473de86a3SLuciano Coelho struct ieee80211_sub_if_data *sdata_iter; 453573de86a3SLuciano Coelho enum nl80211_iftype iftype = sdata->wdev.iftype; 453673de86a3SLuciano Coelho struct ieee80211_chanctx *ctx; 453773de86a3SLuciano Coelho int total = 1; 4538e227300cSPurushottam Kushwaha struct iface_combination_params params = { 4539e227300cSPurushottam Kushwaha .radar_detect = radar_detect, 4540e227300cSPurushottam Kushwaha }; 454173de86a3SLuciano Coelho 454273de86a3SLuciano Coelho lockdep_assert_held(&local->chanctx_mtx); 454373de86a3SLuciano Coelho 454473de86a3SLuciano Coelho if (WARN_ON(hweight32(radar_detect) > 1)) 454573de86a3SLuciano Coelho return -EINVAL; 454673de86a3SLuciano Coelho 4547b6a55015SLuciano Coelho if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 4548b6a55015SLuciano Coelho !chandef->chan)) 454973de86a3SLuciano Coelho return -EINVAL; 455073de86a3SLuciano Coelho 455173de86a3SLuciano Coelho if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 455273de86a3SLuciano Coelho return -EINVAL; 455373de86a3SLuciano Coelho 4554ac668afeSJohannes Berg if (sdata->vif.type == NL80211_IFTYPE_AP || 4555ac668afeSJohannes Berg sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4556ac668afeSJohannes Berg /* 4557ac668afeSJohannes Berg * always passing this is harmless, since it'll be the 4558ac668afeSJohannes Berg * same value that cfg80211 finds if it finds the same 4559ac668afeSJohannes Berg * interface ... and that's always allowed 4560ac668afeSJohannes Berg */ 4561ac668afeSJohannes Berg params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4562ac668afeSJohannes Berg } 4563ac668afeSJohannes Berg 456473de86a3SLuciano Coelho /* Always allow software iftypes */ 4565e6f40511SManikanta Pubbisetty if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 456673de86a3SLuciano Coelho if (radar_detect) 456773de86a3SLuciano Coelho return -EINVAL; 456873de86a3SLuciano Coelho return 0; 456973de86a3SLuciano Coelho } 457073de86a3SLuciano Coelho 4571e227300cSPurushottam Kushwaha if (chandef) 4572e227300cSPurushottam Kushwaha params.num_different_channels = 1; 457373de86a3SLuciano Coelho 457473de86a3SLuciano Coelho if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4575e227300cSPurushottam Kushwaha params.iftype_num[iftype] = 1; 457673de86a3SLuciano Coelho 457773de86a3SLuciano Coelho list_for_each_entry(ctx, &local->chanctx_list, list) { 45785bcae31dSMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 45795bcae31dSMichal Kazior continue; 4580e227300cSPurushottam Kushwaha params.radar_detect |= 4581e227300cSPurushottam Kushwaha ieee80211_chanctx_radar_detect(local, ctx); 458273de86a3SLuciano Coelho if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 4583e227300cSPurushottam Kushwaha params.num_different_channels++; 458473de86a3SLuciano Coelho continue; 458573de86a3SLuciano Coelho } 4586b6a55015SLuciano Coelho if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 458773de86a3SLuciano Coelho cfg80211_chandef_compatible(chandef, 458873de86a3SLuciano Coelho &ctx->conf.def)) 458973de86a3SLuciano Coelho continue; 4590e227300cSPurushottam Kushwaha params.num_different_channels++; 459173de86a3SLuciano Coelho } 459273de86a3SLuciano Coelho 459373de86a3SLuciano Coelho list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 459473de86a3SLuciano Coelho struct wireless_dev *wdev_iter; 459573de86a3SLuciano Coelho 459673de86a3SLuciano Coelho wdev_iter = &sdata_iter->wdev; 459773de86a3SLuciano Coelho 459873de86a3SLuciano Coelho if (sdata_iter == sdata || 45990f611d28SAndrei Otcheretianski !ieee80211_sdata_running(sdata_iter) || 4600e6f40511SManikanta Pubbisetty cfg80211_iftype_allowed(local->hw.wiphy, 4601e6f40511SManikanta Pubbisetty wdev_iter->iftype, 0, 1)) 460273de86a3SLuciano Coelho continue; 460373de86a3SLuciano Coelho 4604e227300cSPurushottam Kushwaha params.iftype_num[wdev_iter->iftype]++; 460573de86a3SLuciano Coelho total++; 460673de86a3SLuciano Coelho } 460773de86a3SLuciano Coelho 4608e227300cSPurushottam Kushwaha if (total == 1 && !params.radar_detect) 460973de86a3SLuciano Coelho return 0; 461073de86a3SLuciano Coelho 4611e227300cSPurushottam Kushwaha return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 461273de86a3SLuciano Coelho } 46136fa001bcSMichal Kazior 46146fa001bcSMichal Kazior static void 46156fa001bcSMichal Kazior ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 46166fa001bcSMichal Kazior void *data) 46176fa001bcSMichal Kazior { 46186fa001bcSMichal Kazior u32 *max_num_different_channels = data; 46196fa001bcSMichal Kazior 46206fa001bcSMichal Kazior *max_num_different_channels = max(*max_num_different_channels, 46216fa001bcSMichal Kazior c->num_different_channels); 46226fa001bcSMichal Kazior } 46236fa001bcSMichal Kazior 46246fa001bcSMichal Kazior int ieee80211_max_num_channels(struct ieee80211_local *local) 46256fa001bcSMichal Kazior { 46266fa001bcSMichal Kazior struct ieee80211_sub_if_data *sdata; 46276fa001bcSMichal Kazior struct ieee80211_chanctx *ctx; 46286fa001bcSMichal Kazior u32 max_num_different_channels = 1; 46296fa001bcSMichal Kazior int err; 4630e227300cSPurushottam Kushwaha struct iface_combination_params params = {0}; 46316fa001bcSMichal Kazior 46326fa001bcSMichal Kazior lockdep_assert_held(&local->chanctx_mtx); 46336fa001bcSMichal Kazior 46346fa001bcSMichal Kazior list_for_each_entry(ctx, &local->chanctx_list, list) { 46355bcae31dSMichal Kazior if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 46365bcae31dSMichal Kazior continue; 46375bcae31dSMichal Kazior 4638e227300cSPurushottam Kushwaha params.num_different_channels++; 46396fa001bcSMichal Kazior 4640e227300cSPurushottam Kushwaha params.radar_detect |= 4641e227300cSPurushottam Kushwaha ieee80211_chanctx_radar_detect(local, ctx); 46426fa001bcSMichal Kazior } 46436fa001bcSMichal Kazior 46446fa001bcSMichal Kazior list_for_each_entry_rcu(sdata, &local->interfaces, list) 4645e227300cSPurushottam Kushwaha params.iftype_num[sdata->wdev.iftype]++; 46466fa001bcSMichal Kazior 4647e227300cSPurushottam Kushwaha err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4648e227300cSPurushottam Kushwaha ieee80211_iter_max_chans, 46496fa001bcSMichal Kazior &max_num_different_channels); 46506fa001bcSMichal Kazior if (err < 0) 46516fa001bcSMichal Kazior return err; 46526fa001bcSMichal Kazior 46536fa001bcSMichal Kazior return max_num_different_channels; 46546fa001bcSMichal Kazior } 465540b861a0SArik Nemtsov 46567957c6c8SThomas Pedersen void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 46577957c6c8SThomas Pedersen struct ieee80211_sta_s1g_cap *caps, 46587957c6c8SThomas Pedersen struct sk_buff *skb) 46597957c6c8SThomas Pedersen { 46607957c6c8SThomas Pedersen struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 46617957c6c8SThomas Pedersen struct ieee80211_s1g_cap s1g_capab; 46627957c6c8SThomas Pedersen u8 *pos; 46637957c6c8SThomas Pedersen int i; 46647957c6c8SThomas Pedersen 46657957c6c8SThomas Pedersen if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 46667957c6c8SThomas Pedersen return; 46677957c6c8SThomas Pedersen 46687957c6c8SThomas Pedersen if (!caps->s1g) 46697957c6c8SThomas Pedersen return; 46707957c6c8SThomas Pedersen 46717957c6c8SThomas Pedersen memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 46727957c6c8SThomas Pedersen memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 46737957c6c8SThomas Pedersen 46747957c6c8SThomas Pedersen /* override the capability info */ 46757957c6c8SThomas Pedersen for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 46767957c6c8SThomas Pedersen u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 46777957c6c8SThomas Pedersen 46787957c6c8SThomas Pedersen s1g_capab.capab_info[i] &= ~mask; 46797957c6c8SThomas Pedersen s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 46807957c6c8SThomas Pedersen } 46817957c6c8SThomas Pedersen 46827957c6c8SThomas Pedersen /* then MCS and NSS set */ 46837957c6c8SThomas Pedersen for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 46847957c6c8SThomas Pedersen u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 46857957c6c8SThomas Pedersen 46867957c6c8SThomas Pedersen s1g_capab.supp_mcs_nss[i] &= ~mask; 46877957c6c8SThomas Pedersen s1g_capab.supp_mcs_nss[i] |= 46887957c6c8SThomas Pedersen ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 46897957c6c8SThomas Pedersen } 46907957c6c8SThomas Pedersen 46917957c6c8SThomas Pedersen pos = skb_put(skb, 2 + sizeof(s1g_capab)); 46927957c6c8SThomas Pedersen *pos++ = WLAN_EID_S1G_CAPABILITIES; 46937957c6c8SThomas Pedersen *pos++ = sizeof(s1g_capab); 46947957c6c8SThomas Pedersen 46957957c6c8SThomas Pedersen memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 46967957c6c8SThomas Pedersen } 46977957c6c8SThomas Pedersen 46981d00ce80SThomas Pedersen void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 46991d00ce80SThomas Pedersen struct sk_buff *skb) 47001d00ce80SThomas Pedersen { 47011d00ce80SThomas Pedersen u8 *pos = skb_put(skb, 3); 47021d00ce80SThomas Pedersen 47031d00ce80SThomas Pedersen *pos++ = WLAN_EID_AID_REQUEST; 47041d00ce80SThomas Pedersen *pos++ = 1; 47051d00ce80SThomas Pedersen *pos++ = 0; 47061d00ce80SThomas Pedersen } 47071d00ce80SThomas Pedersen 470840b861a0SArik Nemtsov u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 470940b861a0SArik Nemtsov { 471040b861a0SArik Nemtsov *buf++ = WLAN_EID_VENDOR_SPECIFIC; 471140b861a0SArik Nemtsov *buf++ = 7; /* len */ 471240b861a0SArik Nemtsov *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 471340b861a0SArik Nemtsov *buf++ = 0x50; 471440b861a0SArik Nemtsov *buf++ = 0xf2; 471540b861a0SArik Nemtsov *buf++ = 2; /* WME */ 471640b861a0SArik Nemtsov *buf++ = 0; /* WME info */ 471740b861a0SArik Nemtsov *buf++ = 1; /* WME ver */ 471840b861a0SArik Nemtsov *buf++ = qosinfo; /* U-APSD no in use */ 471940b861a0SArik Nemtsov 472040b861a0SArik Nemtsov return buf; 472140b861a0SArik Nemtsov } 4722ba8c3d6fSFelix Fietkau 4723f2ac7e30SMichal Kazior void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4724f2ac7e30SMichal Kazior unsigned long *frame_cnt, 4725f2ac7e30SMichal Kazior unsigned long *byte_cnt) 4726f2ac7e30SMichal Kazior { 4727f2ac7e30SMichal Kazior struct txq_info *txqi = to_txq_info(txq); 4728bb42f2d1SToke Høiland-Jørgensen u32 frag_cnt = 0, frag_bytes = 0; 4729bb42f2d1SToke Høiland-Jørgensen struct sk_buff *skb; 4730bb42f2d1SToke Høiland-Jørgensen 4731bb42f2d1SToke Høiland-Jørgensen skb_queue_walk(&txqi->frags, skb) { 4732bb42f2d1SToke Høiland-Jørgensen frag_cnt++; 4733bb42f2d1SToke Høiland-Jørgensen frag_bytes += skb->len; 4734bb42f2d1SToke Høiland-Jørgensen } 4735f2ac7e30SMichal Kazior 4736f2ac7e30SMichal Kazior if (frame_cnt) 4737bb42f2d1SToke Høiland-Jørgensen *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4738f2ac7e30SMichal Kazior 4739f2ac7e30SMichal Kazior if (byte_cnt) 4740bb42f2d1SToke Høiland-Jørgensen *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4741f2ac7e30SMichal Kazior } 4742f2ac7e30SMichal Kazior EXPORT_SYMBOL(ieee80211_txq_get_depth); 4743f438ceb8SEmmanuel Grumbach 4744f438ceb8SEmmanuel Grumbach const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4745f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4746f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4747f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4748f438ceb8SEmmanuel Grumbach IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4749f438ceb8SEmmanuel Grumbach }; 475005d10957SThomas Pedersen 475105d10957SThomas Pedersen u16 ieee80211_encode_usf(int listen_interval) 475205d10957SThomas Pedersen { 475305d10957SThomas Pedersen static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 475405d10957SThomas Pedersen u16 ui, usf = 0; 475505d10957SThomas Pedersen 475605d10957SThomas Pedersen /* find greatest USF */ 475705d10957SThomas Pedersen while (usf < IEEE80211_MAX_USF) { 475805d10957SThomas Pedersen if (listen_interval % listen_int_usf[usf + 1]) 475905d10957SThomas Pedersen break; 476005d10957SThomas Pedersen usf += 1; 476105d10957SThomas Pedersen } 476205d10957SThomas Pedersen ui = listen_interval / listen_int_usf[usf]; 476305d10957SThomas Pedersen 476405d10957SThomas Pedersen /* error if there is a remainder. Should've been checked by user */ 476505d10957SThomas Pedersen WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 476605d10957SThomas Pedersen listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 476705d10957SThomas Pedersen FIELD_PREP(LISTEN_INT_UI, ui); 476805d10957SThomas Pedersen 476905d10957SThomas Pedersen return (u16) listen_interval; 477005d10957SThomas Pedersen } 4771820acc81SIlan Peer 4772820acc81SIlan Peer u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype) 4773820acc81SIlan Peer { 4774820acc81SIlan Peer const struct ieee80211_sta_he_cap *he_cap; 4775820acc81SIlan Peer const struct ieee80211_sta_eht_cap *eht_cap; 4776820acc81SIlan Peer struct ieee80211_supported_band *sband; 4777ea5cba26SJohannes Berg bool is_ap; 4778820acc81SIlan Peer u8 n; 4779820acc81SIlan Peer 4780820acc81SIlan Peer sband = ieee80211_get_sband(sdata); 4781820acc81SIlan Peer if (!sband) 4782820acc81SIlan Peer return 0; 4783820acc81SIlan Peer 4784820acc81SIlan Peer he_cap = ieee80211_get_he_iftype_cap(sband, iftype); 4785820acc81SIlan Peer eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype); 4786820acc81SIlan Peer if (!he_cap || !eht_cap) 4787820acc81SIlan Peer return 0; 4788820acc81SIlan Peer 4789ea5cba26SJohannes Berg is_ap = iftype == NL80211_IFTYPE_AP || 4790ea5cba26SJohannes Berg iftype == NL80211_IFTYPE_P2P_GO; 4791ea5cba26SJohannes Berg 4792820acc81SIlan Peer n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4793ea5cba26SJohannes Berg &eht_cap->eht_cap_elem, 4794ea5cba26SJohannes Berg is_ap); 4795820acc81SIlan Peer return 2 + 1 + 4796820acc81SIlan Peer sizeof(he_cap->he_cap_elem) + n + 4797820acc81SIlan Peer ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4798820acc81SIlan Peer eht_cap->eht_cap_elem.phy_cap_info); 4799820acc81SIlan Peer return 0; 4800820acc81SIlan Peer } 4801820acc81SIlan Peer 4802820acc81SIlan Peer u8 *ieee80211_ie_build_eht_cap(u8 *pos, 4803820acc81SIlan Peer const struct ieee80211_sta_he_cap *he_cap, 4804820acc81SIlan Peer const struct ieee80211_sta_eht_cap *eht_cap, 4805ea5cba26SJohannes Berg u8 *end, 4806ea5cba26SJohannes Berg bool for_ap) 4807820acc81SIlan Peer { 4808820acc81SIlan Peer u8 mcs_nss_len, ppet_len; 4809820acc81SIlan Peer u8 ie_len; 4810820acc81SIlan Peer u8 *orig_pos = pos; 4811820acc81SIlan Peer 4812820acc81SIlan Peer /* Make sure we have place for the IE */ 4813820acc81SIlan Peer if (!he_cap || !eht_cap) 4814820acc81SIlan Peer return orig_pos; 4815820acc81SIlan Peer 4816820acc81SIlan Peer mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4817ea5cba26SJohannes Berg &eht_cap->eht_cap_elem, 4818ea5cba26SJohannes Berg for_ap); 4819820acc81SIlan Peer ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4820820acc81SIlan Peer eht_cap->eht_cap_elem.phy_cap_info); 4821820acc81SIlan Peer 4822820acc81SIlan Peer ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4823820acc81SIlan Peer if ((end - pos) < ie_len) 4824820acc81SIlan Peer return orig_pos; 4825820acc81SIlan Peer 4826820acc81SIlan Peer *pos++ = WLAN_EID_EXTENSION; 4827820acc81SIlan Peer *pos++ = ie_len - 2; 4828820acc81SIlan Peer *pos++ = WLAN_EID_EXT_EHT_CAPABILITY; 4829820acc81SIlan Peer 4830820acc81SIlan Peer /* Fixed data */ 4831820acc81SIlan Peer memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem)); 4832820acc81SIlan Peer pos += sizeof(eht_cap->eht_cap_elem); 4833820acc81SIlan Peer 4834820acc81SIlan Peer memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4835820acc81SIlan Peer pos += mcs_nss_len; 4836820acc81SIlan Peer 4837820acc81SIlan Peer if (ppet_len) { 4838820acc81SIlan Peer memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len); 4839820acc81SIlan Peer pos += ppet_len; 4840820acc81SIlan Peer } 4841820acc81SIlan Peer 4842820acc81SIlan Peer return pos; 4843820acc81SIlan Peer } 4844e4342549SJohannes Berg 4845e4342549SJohannes Berg void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos) 4846e4342549SJohannes Berg { 4847e4342549SJohannes Berg unsigned int elem_len; 4848e4342549SJohannes Berg 4849e4342549SJohannes Berg if (!len_pos) 4850e4342549SJohannes Berg return; 4851e4342549SJohannes Berg 4852e4342549SJohannes Berg elem_len = skb->data + skb->len - len_pos - 1; 4853e4342549SJohannes Berg 4854e4342549SJohannes Berg while (elem_len > 255) { 4855e4342549SJohannes Berg /* this one is 255 */ 4856e4342549SJohannes Berg *len_pos = 255; 4857e4342549SJohannes Berg /* remaining data gets smaller */ 4858e4342549SJohannes Berg elem_len -= 255; 4859e4342549SJohannes Berg /* make space for the fragment ID/len in SKB */ 4860e4342549SJohannes Berg skb_put(skb, 2); 4861e4342549SJohannes Berg /* shift back the remaining data to place fragment ID/len */ 4862e4342549SJohannes Berg memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len); 4863e4342549SJohannes Berg /* place the fragment ID */ 4864e4342549SJohannes Berg len_pos += 255 + 1; 4865e4342549SJohannes Berg *len_pos = WLAN_EID_FRAGMENT; 4866e4342549SJohannes Berg /* and point to fragment length to update later */ 4867e4342549SJohannes Berg len_pos++; 4868e4342549SJohannes Berg } 4869e4342549SJohannes Berg 4870e4342549SJohannes Berg *len_pos = elem_len; 4871e4342549SJohannes Berg } 4872