Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 3 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| 5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * utilities for mac80211 |
| 12 | */ |
| 13 | |
| 14 | #include <net/mac80211.h> |
| 15 | #include <linux/netdevice.h> |
Paul Gortmaker | bc3b2d7 | 2011-07-15 11:47:34 -0400 | [diff] [blame] | 16 | #include <linux/export.h> |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 17 | #include <linux/types.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/skbuff.h> |
| 20 | #include <linux/etherdevice.h> |
| 21 | #include <linux/if_arp.h> |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 22 | #include <linux/bitmap.h> |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 23 | #include <linux/crc32.h> |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 24 | #include <net/net_namespace.h> |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 25 | #include <net/cfg80211.h> |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 26 | #include <net/rtnetlink.h> |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 27 | |
| 28 | #include "ieee80211_i.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 29 | #include "driver-ops.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 30 | #include "rate.h" |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 31 | #include "mesh.h" |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 32 | #include "wme.h" |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 33 | #include "led.h" |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 34 | #include "wep.h" |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 35 | |
| 36 | /* privid for wiphys to determine whether they belong to us or not */ |
| 37 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; |
| 38 | |
Luis R. Rodriguez | 9a95371 | 2009-01-22 15:05:53 -0800 | [diff] [blame] | 39 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
| 40 | { |
| 41 | struct ieee80211_local *local; |
| 42 | BUG_ON(!wiphy); |
| 43 | |
| 44 | local = wiphy_priv(wiphy); |
| 45 | return &local->hw; |
| 46 | } |
| 47 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 48 | |
Ron Rindjunsky | 7136471 | 2007-12-25 17:00:36 +0200 | [diff] [blame] | 49 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 50 | enum nl80211_iftype type) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 51 | { |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 52 | __le16 fc = hdr->frame_control; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 53 | |
Ron Rindjunsky | 98f0b0a | 2007-12-18 17:23:53 +0200 | [diff] [blame] | 54 | /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ |
| 55 | if (len < 16) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 56 | return NULL; |
| 57 | |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 58 | if (ieee80211_is_data(fc)) { |
Ron Rindjunsky | 98f0b0a | 2007-12-18 17:23:53 +0200 | [diff] [blame] | 59 | if (len < 24) /* drop incorrect hdr len (data) */ |
| 60 | return NULL; |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 61 | |
| 62 | if (ieee80211_has_a4(fc)) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 63 | return NULL; |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 64 | if (ieee80211_has_tods(fc)) |
| 65 | return hdr->addr1; |
| 66 | if (ieee80211_has_fromds(fc)) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 67 | return hdr->addr2; |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 68 | |
| 69 | return hdr->addr3; |
| 70 | } |
| 71 | |
| 72 | if (ieee80211_is_mgmt(fc)) { |
Ron Rindjunsky | 98f0b0a | 2007-12-18 17:23:53 +0200 | [diff] [blame] | 73 | if (len < 24) /* drop incorrect hdr len (mgmt) */ |
| 74 | return NULL; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 75 | return hdr->addr3; |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | if (ieee80211_is_ctl(fc)) { |
| 79 | if(ieee80211_is_pspoll(fc)) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 80 | return hdr->addr1; |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 81 | |
| 82 | if (ieee80211_is_back_req(fc)) { |
Ron Rindjunsky | 7136471 | 2007-12-25 17:00:36 +0200 | [diff] [blame] | 83 | switch (type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 84 | case NL80211_IFTYPE_STATION: |
Ron Rindjunsky | 7136471 | 2007-12-25 17:00:36 +0200 | [diff] [blame] | 85 | return hdr->addr2; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 86 | case NL80211_IFTYPE_AP: |
| 87 | case NL80211_IFTYPE_AP_VLAN: |
Ron Rindjunsky | 7136471 | 2007-12-25 17:00:36 +0200 | [diff] [blame] | 88 | return hdr->addr1; |
| 89 | default: |
Harvey Harrison | a494bb1 | 2008-06-11 14:21:58 -0700 | [diff] [blame] | 90 | break; /* fall through to the return */ |
Ron Rindjunsky | 7136471 | 2007-12-25 17:00:36 +0200 | [diff] [blame] | 91 | } |
| 92 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | return NULL; |
| 96 | } |
| 97 | |
Johannes Berg | 5cf121c | 2008-02-25 16:27:43 +0100 | [diff] [blame] | 98 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 99 | { |
Johannes Berg | 252b86c | 2011-11-16 15:28:55 +0100 | [diff] [blame] | 100 | struct sk_buff *skb; |
Johannes Berg | 2de8e0d | 2009-03-23 17:28:35 +0100 | [diff] [blame] | 101 | struct ieee80211_hdr *hdr; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 102 | |
Johannes Berg | 252b86c | 2011-11-16 15:28:55 +0100 | [diff] [blame] | 103 | skb_queue_walk(&tx->skbs, skb) { |
Johannes Berg | 2de8e0d | 2009-03-23 17:28:35 +0100 | [diff] [blame] | 104 | hdr = (struct ieee80211_hdr *) skb->data; |
| 105 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
Johannes Berg | 252b86c | 2011-11-16 15:28:55 +0100 | [diff] [blame] | 106 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 107 | } |
| 108 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 109 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 110 | int rate, int erp, int short_preamble, |
| 111 | int shift) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 112 | { |
| 113 | int dur; |
| 114 | |
| 115 | /* calculate duration (in microseconds, rounded up to next higher |
| 116 | * integer if it includes a fractional microsecond) to send frame of |
| 117 | * len bytes (does not include FCS) at the given rate. Duration will |
| 118 | * also include SIFS. |
| 119 | * |
| 120 | * rate is in 100 kbps, so divident is multiplied by 10 in the |
| 121 | * DIV_ROUND_UP() operations. |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 122 | * |
| 123 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and |
| 124 | * is assumed to be 0 otherwise. |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 125 | */ |
| 126 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 127 | if (band == IEEE80211_BAND_5GHZ || erp) { |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 128 | /* |
| 129 | * OFDM: |
| 130 | * |
| 131 | * N_DBPS = DATARATE x 4 |
| 132 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) |
| 133 | * (16 = SIGNAL time, 6 = tail bits) |
| 134 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext |
| 135 | * |
| 136 | * T_SYM = 4 usec |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 137 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 138 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
| 139 | * signal ext = 6 usec |
| 140 | */ |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 141 | dur = 16; /* SIFS + signal ext */ |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 142 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
| 143 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 144 | |
| 145 | /* IEEE 802.11-2012 18.3.2.4: all values above are: |
| 146 | * * times 4 for 5 MHz |
| 147 | * * times 2 for 10 MHz |
| 148 | */ |
| 149 | dur *= 1 << shift; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 150 | |
| 151 | /* rates should already consider the channel bandwidth, |
| 152 | * don't apply divisor again. |
| 153 | */ |
| 154 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, |
| 155 | 4 * rate); /* T_SYM x N_SYM */ |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 156 | } else { |
| 157 | /* |
| 158 | * 802.11b or 802.11g with 802.11b compatibility: |
| 159 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + |
| 160 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. |
| 161 | * |
| 162 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 |
| 163 | * aSIFSTime = 10 usec |
| 164 | * aPreambleLength = 144 usec or 72 usec with short preamble |
| 165 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble |
| 166 | */ |
| 167 | dur = 10; /* aSIFSTime = 10 usec */ |
| 168 | dur += short_preamble ? (72 + 24) : (144 + 48); |
| 169 | |
| 170 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); |
| 171 | } |
| 172 | |
| 173 | return dur; |
| 174 | } |
| 175 | |
| 176 | /* Exported duration function for driver use */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 177 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 178 | struct ieee80211_vif *vif, |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 179 | enum ieee80211_band band, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 180 | size_t frame_len, |
| 181 | struct ieee80211_rate *rate) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 182 | { |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 183 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 184 | u16 dur; |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 185 | int erp, shift = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 186 | bool short_preamble = false; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 187 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 188 | erp = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 189 | if (vif) { |
| 190 | sdata = vif_to_sdata(vif); |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 191 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 192 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
| 193 | erp = rate->flags & IEEE80211_RATE_ERP_G; |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 194 | shift = ieee80211_vif_get_shift(vif); |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 195 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 196 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 197 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 198 | short_preamble, shift); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 199 | |
| 200 | return cpu_to_le16(dur); |
| 201 | } |
| 202 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); |
| 203 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 204 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 205 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 206 | const struct ieee80211_tx_info *frame_txctl) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 207 | { |
| 208 | struct ieee80211_local *local = hw_to_local(hw); |
| 209 | struct ieee80211_rate *rate; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 210 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 211 | bool short_preamble; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 212 | int erp, shift = 0, bitrate; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 213 | u16 dur; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 214 | struct ieee80211_supported_band *sband; |
| 215 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 216 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 217 | |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 218 | short_preamble = false; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 219 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 220 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 221 | |
| 222 | erp = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 223 | if (vif) { |
| 224 | sdata = vif_to_sdata(vif); |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 225 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 226 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
| 227 | erp = rate->flags & IEEE80211_RATE_ERP_G; |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 228 | shift = ieee80211_vif_get_shift(vif); |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 229 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 230 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 231 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
| 232 | |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 233 | /* CTS duration */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 234 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 235 | erp, short_preamble, shift); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 236 | /* Data frame duration */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 237 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 238 | erp, short_preamble, shift); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 239 | /* ACK duration */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 240 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 241 | erp, short_preamble, shift); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 242 | |
| 243 | return cpu_to_le16(dur); |
| 244 | } |
| 245 | EXPORT_SYMBOL(ieee80211_rts_duration); |
| 246 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 247 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 248 | struct ieee80211_vif *vif, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 249 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 250 | const struct ieee80211_tx_info *frame_txctl) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 251 | { |
| 252 | struct ieee80211_local *local = hw_to_local(hw); |
| 253 | struct ieee80211_rate *rate; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 254 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 255 | bool short_preamble; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 256 | int erp, shift = 0, bitrate; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 257 | u16 dur; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 258 | struct ieee80211_supported_band *sband; |
| 259 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 260 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 261 | |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 262 | short_preamble = false; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 263 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 264 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 265 | erp = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 266 | if (vif) { |
| 267 | sdata = vif_to_sdata(vif); |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 268 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 269 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
| 270 | erp = rate->flags & IEEE80211_RATE_ERP_G; |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 271 | shift = ieee80211_vif_get_shift(vif); |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 272 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 273 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 274 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
| 275 | |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 276 | /* Data frame duration */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 277 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 278 | erp, short_preamble, shift); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 279 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 280 | /* ACK duration */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 281 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
Simon Wunderlich | 438b61b | 2013-07-08 16:55:51 +0200 | [diff] [blame] | 282 | erp, short_preamble, shift); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 283 | } |
| 284 | |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 285 | return cpu_to_le16(dur); |
| 286 | } |
| 287 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); |
| 288 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 289 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
| 290 | { |
| 291 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame] | 292 | int n_acs = IEEE80211_NUM_ACS; |
| 293 | |
| 294 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 295 | n_acs = 1; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 296 | |
| 297 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| 298 | int ac; |
| 299 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 300 | if (!sdata->dev) |
| 301 | continue; |
| 302 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 303 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
| 304 | continue; |
| 305 | |
| 306 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
| 307 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) |
| 308 | continue; |
| 309 | |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame] | 310 | for (ac = 0; ac < n_acs; ac++) { |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 311 | int ac_queue = sdata->vif.hw_queue[ac]; |
| 312 | |
| 313 | if (ac_queue == queue || |
| 314 | (sdata->vif.cab_queue == queue && |
| 315 | local->queue_stop_reasons[ac_queue] == 0 && |
| 316 | skb_queue_empty(&local->pending[ac_queue]))) |
| 317 | netif_wake_subqueue(sdata->dev, ac); |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 322 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
| 323 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 324 | { |
| 325 | struct ieee80211_local *local = hw_to_local(hw); |
| 326 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 327 | trace_wake_queue(local, queue, reason); |
| 328 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 329 | if (WARN_ON(queue >= hw->queues)) |
| 330 | return; |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 331 | |
Johannes Berg | ada1512 | 2012-03-28 11:04:27 +0200 | [diff] [blame] | 332 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
| 333 | return; |
| 334 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 335 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
| 336 | |
| 337 | if (local->queue_stop_reasons[queue] != 0) |
| 338 | /* someone still has this queue stopped */ |
| 339 | return; |
| 340 | |
Johannes Berg | 7236fe2 | 2010-03-22 13:42:43 -0700 | [diff] [blame] | 341 | if (skb_queue_empty(&local->pending[queue])) { |
| 342 | rcu_read_lock(); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 343 | ieee80211_propagate_queue_wake(local, queue); |
Johannes Berg | 7236fe2 | 2010-03-22 13:42:43 -0700 | [diff] [blame] | 344 | rcu_read_unlock(); |
| 345 | } else |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 346 | tasklet_schedule(&local->tx_pending_tasklet); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 347 | } |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 348 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 349 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
| 350 | enum queue_stop_reason reason) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 351 | { |
| 352 | struct ieee80211_local *local = hw_to_local(hw); |
| 353 | unsigned long flags; |
| 354 | |
| 355 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 356 | __ieee80211_wake_queue(hw, queue, reason); |
| 357 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 358 | } |
| 359 | |
| 360 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) |
| 361 | { |
| 362 | ieee80211_wake_queue_by_reason(hw, queue, |
| 363 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
| 364 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 365 | EXPORT_SYMBOL(ieee80211_wake_queue); |
| 366 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 367 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
| 368 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 369 | { |
| 370 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 371 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame] | 372 | int n_acs = IEEE80211_NUM_ACS; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 373 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 374 | trace_stop_queue(local, queue, reason); |
| 375 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 376 | if (WARN_ON(queue >= hw->queues)) |
| 377 | return; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 378 | |
Johannes Berg | ada1512 | 2012-03-28 11:04:27 +0200 | [diff] [blame] | 379 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
| 380 | return; |
| 381 | |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 382 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 383 | |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame] | 384 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 385 | n_acs = 1; |
| 386 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 387 | rcu_read_lock(); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 388 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| 389 | int ac; |
| 390 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 391 | if (!sdata->dev) |
| 392 | continue; |
| 393 | |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame] | 394 | for (ac = 0; ac < n_acs; ac++) { |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 395 | if (sdata->vif.hw_queue[ac] == queue || |
| 396 | sdata->vif.cab_queue == queue) |
| 397 | netif_stop_subqueue(sdata->dev, ac); |
| 398 | } |
| 399 | } |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 400 | rcu_read_unlock(); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 401 | } |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 402 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 403 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
| 404 | enum queue_stop_reason reason) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 405 | { |
| 406 | struct ieee80211_local *local = hw_to_local(hw); |
| 407 | unsigned long flags; |
| 408 | |
| 409 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 410 | __ieee80211_stop_queue(hw, queue, reason); |
| 411 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 412 | } |
| 413 | |
| 414 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) |
| 415 | { |
| 416 | ieee80211_stop_queue_by_reason(hw, queue, |
| 417 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
| 418 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 419 | EXPORT_SYMBOL(ieee80211_stop_queue); |
| 420 | |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 421 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
| 422 | struct sk_buff *skb) |
| 423 | { |
| 424 | struct ieee80211_hw *hw = &local->hw; |
| 425 | unsigned long flags; |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 426 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 427 | int queue = info->hw_queue; |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 428 | |
| 429 | if (WARN_ON(!info->control.vif)) { |
Felix Fietkau | d4fa14c | 2012-10-10 22:40:23 +0200 | [diff] [blame] | 430 | ieee80211_free_txskb(&local->hw, skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 431 | return; |
| 432 | } |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 433 | |
| 434 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 435 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 436 | __skb_queue_tail(&local->pending[queue], skb); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 437 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
| 438 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 439 | } |
| 440 | |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 441 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
| 442 | struct sk_buff_head *skbs, |
| 443 | void (*fn)(void *data), void *data) |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 444 | { |
| 445 | struct ieee80211_hw *hw = &local->hw; |
| 446 | struct sk_buff *skb; |
| 447 | unsigned long flags; |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 448 | int queue, i; |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 449 | |
| 450 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 451 | while ((skb = skb_dequeue(skbs))) { |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 452 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 453 | |
| 454 | if (WARN_ON(!info->control.vif)) { |
Felix Fietkau | d4fa14c | 2012-10-10 22:40:23 +0200 | [diff] [blame] | 455 | ieee80211_free_txskb(&local->hw, skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 456 | continue; |
| 457 | } |
| 458 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 459 | queue = info->hw_queue; |
Johannes Berg | 4644ae8 | 2012-03-28 11:04:28 +0200 | [diff] [blame] | 460 | |
| 461 | __ieee80211_stop_queue(hw, queue, |
| 462 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
| 463 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 464 | __skb_queue_tail(&local->pending[queue], skb); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 465 | } |
| 466 | |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 467 | if (fn) |
| 468 | fn(data); |
| 469 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 470 | for (i = 0; i < hw->queues; i++) |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 471 | __ieee80211_wake_queue(hw, i, |
| 472 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 473 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 474 | } |
| 475 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 476 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 477 | unsigned long queues, |
| 478 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 479 | { |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 480 | struct ieee80211_local *local = hw_to_local(hw); |
| 481 | unsigned long flags; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 482 | int i; |
| 483 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 484 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 485 | |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 486 | for_each_set_bit(i, &queues, hw->queues) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 487 | __ieee80211_stop_queue(hw, i, reason); |
| 488 | |
| 489 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 490 | } |
| 491 | |
| 492 | void ieee80211_stop_queues(struct ieee80211_hw *hw) |
| 493 | { |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 494 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 495 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 496 | } |
| 497 | EXPORT_SYMBOL(ieee80211_stop_queues); |
| 498 | |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 499 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
| 500 | { |
| 501 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 502 | unsigned long flags; |
| 503 | int ret; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 504 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 505 | if (WARN_ON(queue >= hw->queues)) |
| 506 | return true; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 507 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 508 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
Thomas Pedersen | 2419ea1 | 2013-04-10 15:41:40 -0700 | [diff] [blame] | 509 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
| 510 | &local->queue_stop_reasons[queue]); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 511 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 512 | return ret; |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 513 | } |
| 514 | EXPORT_SYMBOL(ieee80211_queue_stopped); |
| 515 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 516 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 517 | unsigned long queues, |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 518 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 519 | { |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 520 | struct ieee80211_local *local = hw_to_local(hw); |
| 521 | unsigned long flags; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 522 | int i; |
| 523 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 524 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 525 | |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 526 | for_each_set_bit(i, &queues, hw->queues) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 527 | __ieee80211_wake_queue(hw, i, reason); |
| 528 | |
| 529 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 530 | } |
| 531 | |
| 532 | void ieee80211_wake_queues(struct ieee80211_hw *hw) |
| 533 | { |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 534 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
| 535 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 536 | } |
| 537 | EXPORT_SYMBOL(ieee80211_wake_queues); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 538 | |
Johannes Berg | 39ecc01 | 2013-02-13 12:11:00 +0100 | [diff] [blame] | 539 | void ieee80211_flush_queues(struct ieee80211_local *local, |
| 540 | struct ieee80211_sub_if_data *sdata) |
| 541 | { |
| 542 | u32 queues; |
| 543 | |
| 544 | if (!local->ops->flush) |
| 545 | return; |
| 546 | |
| 547 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { |
| 548 | int ac; |
| 549 | |
| 550 | queues = 0; |
| 551 | |
| 552 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
| 553 | queues |= BIT(sdata->vif.hw_queue[ac]); |
| 554 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) |
| 555 | queues |= BIT(sdata->vif.cab_queue); |
| 556 | } else { |
| 557 | /* all queues */ |
| 558 | queues = BIT(local->hw.queues) - 1; |
| 559 | } |
| 560 | |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 561 | ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, |
| 562 | IEEE80211_QUEUE_STOP_REASON_FLUSH); |
| 563 | |
Johannes Berg | 39ecc01 | 2013-02-13 12:11:00 +0100 | [diff] [blame] | 564 | drv_flush(local, queues, false); |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 565 | |
| 566 | ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, |
| 567 | IEEE80211_QUEUE_STOP_REASON_FLUSH); |
Johannes Berg | 39ecc01 | 2013-02-13 12:11:00 +0100 | [diff] [blame] | 568 | } |
| 569 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 570 | void ieee80211_iterate_active_interfaces( |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 571 | struct ieee80211_hw *hw, u32 iter_flags, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 572 | void (*iterator)(void *data, u8 *mac, |
| 573 | struct ieee80211_vif *vif), |
| 574 | void *data) |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 575 | { |
| 576 | struct ieee80211_local *local = hw_to_local(hw); |
| 577 | struct ieee80211_sub_if_data *sdata; |
| 578 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 579 | mutex_lock(&local->iflist_mtx); |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 580 | |
| 581 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 582 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 583 | case NL80211_IFTYPE_MONITOR: |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 584 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
| 585 | continue; |
| 586 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 587 | case NL80211_IFTYPE_AP_VLAN: |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 588 | continue; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 589 | default: |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 590 | break; |
| 591 | } |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 592 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
| 593 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
| 594 | continue; |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 595 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 596 | iterator(data, sdata->vif.addr, |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 597 | &sdata->vif); |
| 598 | } |
| 599 | |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 600 | sdata = rcu_dereference_protected(local->monitor_sdata, |
| 601 | lockdep_is_held(&local->iflist_mtx)); |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 602 | if (sdata && |
| 603 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || |
| 604 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 605 | iterator(data, sdata->vif.addr, &sdata->vif); |
| 606 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 607 | mutex_unlock(&local->iflist_mtx); |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 608 | } |
| 609 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); |
| 610 | |
| 611 | void ieee80211_iterate_active_interfaces_atomic( |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 612 | struct ieee80211_hw *hw, u32 iter_flags, |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 613 | void (*iterator)(void *data, u8 *mac, |
| 614 | struct ieee80211_vif *vif), |
| 615 | void *data) |
| 616 | { |
| 617 | struct ieee80211_local *local = hw_to_local(hw); |
| 618 | struct ieee80211_sub_if_data *sdata; |
| 619 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 620 | rcu_read_lock(); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 621 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 622 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 623 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 624 | case NL80211_IFTYPE_MONITOR: |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 625 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
| 626 | continue; |
| 627 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 628 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 629 | continue; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 630 | default: |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 631 | break; |
| 632 | } |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 633 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
| 634 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
| 635 | continue; |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 636 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 637 | iterator(data, sdata->vif.addr, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 638 | &sdata->vif); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 639 | } |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 640 | |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 641 | sdata = rcu_dereference(local->monitor_sdata); |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 642 | if (sdata && |
| 643 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || |
| 644 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 645 | iterator(data, sdata->vif.addr, &sdata->vif); |
| 646 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 647 | rcu_read_unlock(); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 648 | } |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 649 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
Johannes Berg | 37ffc8d | 2008-09-08 16:40:36 +0200 | [diff] [blame] | 650 | |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 651 | /* |
| 652 | * Nothing should have been stuffed into the workqueue during |
| 653 | * the suspend->resume cycle. If this WARN is seen then there |
| 654 | * is a bug with either the driver suspend or something in |
| 655 | * mac80211 stuffing into the workqueue which we haven't yet |
| 656 | * cleared during mac80211's suspend cycle. |
| 657 | */ |
| 658 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) |
| 659 | { |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 660 | if (WARN(local->suspended && !local->resuming, |
| 661 | "queueing ieee80211 work while going to suspend\n")) |
| 662 | return false; |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 663 | |
| 664 | return true; |
| 665 | } |
| 666 | |
| 667 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) |
| 668 | { |
| 669 | struct ieee80211_local *local = hw_to_local(hw); |
| 670 | |
| 671 | if (!ieee80211_can_queue_work(local)) |
| 672 | return; |
| 673 | |
| 674 | queue_work(local->workqueue, work); |
| 675 | } |
| 676 | EXPORT_SYMBOL(ieee80211_queue_work); |
| 677 | |
| 678 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
| 679 | struct delayed_work *dwork, |
| 680 | unsigned long delay) |
| 681 | { |
| 682 | struct ieee80211_local *local = hw_to_local(hw); |
| 683 | |
| 684 | if (!ieee80211_can_queue_work(local)) |
| 685 | return; |
| 686 | |
| 687 | queue_delayed_work(local->workqueue, dwork, delay); |
| 688 | } |
| 689 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); |
| 690 | |
Johannes Berg | 35d865a | 2013-05-28 10:54:03 +0200 | [diff] [blame] | 691 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 692 | struct ieee802_11_elems *elems, |
| 693 | u64 filter, u32 crc) |
| 694 | { |
| 695 | size_t left = len; |
Johannes Berg | 35d865a | 2013-05-28 10:54:03 +0200 | [diff] [blame] | 696 | const u8 *pos = start; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 697 | bool calc_crc = filter != 0; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 698 | DECLARE_BITMAP(seen_elems, 256); |
Johannes Berg | b2e506b | 2013-03-26 14:54:16 +0100 | [diff] [blame] | 699 | const u8 *ie; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 700 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 701 | bitmap_zero(seen_elems, 256); |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 702 | memset(elems, 0, sizeof(*elems)); |
| 703 | elems->ie_start = start; |
| 704 | elems->total_len = len; |
| 705 | |
| 706 | while (left >= 2) { |
| 707 | u8 id, elen; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 708 | bool elem_parse_failed; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 709 | |
| 710 | id = *pos++; |
| 711 | elen = *pos++; |
| 712 | left -= 2; |
| 713 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 714 | if (elen > left) { |
| 715 | elems->parse_error = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 716 | break; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 717 | } |
| 718 | |
Johannes Berg | 9690fb1 | 2012-10-24 14:19:53 +0200 | [diff] [blame] | 719 | switch (id) { |
| 720 | case WLAN_EID_SSID: |
| 721 | case WLAN_EID_SUPP_RATES: |
| 722 | case WLAN_EID_FH_PARAMS: |
| 723 | case WLAN_EID_DS_PARAMS: |
| 724 | case WLAN_EID_CF_PARAMS: |
| 725 | case WLAN_EID_TIM: |
| 726 | case WLAN_EID_IBSS_PARAMS: |
| 727 | case WLAN_EID_CHALLENGE: |
| 728 | case WLAN_EID_RSN: |
| 729 | case WLAN_EID_ERP_INFO: |
| 730 | case WLAN_EID_EXT_SUPP_RATES: |
| 731 | case WLAN_EID_HT_CAPABILITY: |
| 732 | case WLAN_EID_HT_OPERATION: |
| 733 | case WLAN_EID_VHT_CAPABILITY: |
| 734 | case WLAN_EID_VHT_OPERATION: |
| 735 | case WLAN_EID_MESH_ID: |
| 736 | case WLAN_EID_MESH_CONFIG: |
| 737 | case WLAN_EID_PEER_MGMT: |
| 738 | case WLAN_EID_PREQ: |
| 739 | case WLAN_EID_PREP: |
| 740 | case WLAN_EID_PERR: |
| 741 | case WLAN_EID_RANN: |
| 742 | case WLAN_EID_CHANNEL_SWITCH: |
| 743 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
| 744 | case WLAN_EID_COUNTRY: |
| 745 | case WLAN_EID_PWR_CONSTRAINT: |
| 746 | case WLAN_EID_TIMEOUT_INTERVAL: |
Johannes Berg | 85220d7 | 2013-03-25 18:29:27 +0100 | [diff] [blame] | 747 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
Johannes Berg | b2e506b | 2013-03-26 14:54:16 +0100 | [diff] [blame] | 748 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
| 749 | /* |
| 750 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible |
| 751 | * that if the content gets bigger it might be needed more than once |
| 752 | */ |
Johannes Berg | 9690fb1 | 2012-10-24 14:19:53 +0200 | [diff] [blame] | 753 | if (test_bit(id, seen_elems)) { |
| 754 | elems->parse_error = true; |
| 755 | left -= elen; |
| 756 | pos += elen; |
| 757 | continue; |
| 758 | } |
| 759 | break; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 760 | } |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 761 | |
| 762 | if (calc_crc && id < 64 && (filter & (1ULL << id))) |
| 763 | crc = crc32_be(crc, pos - 2, elen + 2); |
| 764 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 765 | elem_parse_failed = false; |
| 766 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 767 | switch (id) { |
| 768 | case WLAN_EID_SSID: |
| 769 | elems->ssid = pos; |
| 770 | elems->ssid_len = elen; |
| 771 | break; |
| 772 | case WLAN_EID_SUPP_RATES: |
| 773 | elems->supp_rates = pos; |
| 774 | elems->supp_rates_len = elen; |
| 775 | break; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 776 | case WLAN_EID_DS_PARAMS: |
Johannes Berg | 1cd8e88 | 2013-03-27 14:30:12 +0100 | [diff] [blame] | 777 | if (elen >= 1) |
| 778 | elems->ds_params = pos; |
| 779 | else |
| 780 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 781 | break; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 782 | case WLAN_EID_TIM: |
| 783 | if (elen >= sizeof(struct ieee80211_tim_ie)) { |
| 784 | elems->tim = (void *)pos; |
| 785 | elems->tim_len = elen; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 786 | } else |
| 787 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 788 | break; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 789 | case WLAN_EID_CHALLENGE: |
| 790 | elems->challenge = pos; |
| 791 | elems->challenge_len = elen; |
| 792 | break; |
| 793 | case WLAN_EID_VENDOR_SPECIFIC: |
| 794 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
| 795 | pos[2] == 0xf2) { |
| 796 | /* Microsoft OUI (00:50:F2) */ |
| 797 | |
| 798 | if (calc_crc) |
| 799 | crc = crc32_be(crc, pos - 2, elen + 2); |
| 800 | |
Johannes Berg | 441a33b | 2013-02-12 16:27:04 +0100 | [diff] [blame] | 801 | if (elen >= 5 && pos[3] == 2) { |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 802 | /* OUI Type 2 - WMM IE */ |
| 803 | if (pos[4] == 0) { |
| 804 | elems->wmm_info = pos; |
| 805 | elems->wmm_info_len = elen; |
| 806 | } else if (pos[4] == 1) { |
| 807 | elems->wmm_param = pos; |
| 808 | elems->wmm_param_len = elen; |
| 809 | } |
| 810 | } |
| 811 | } |
| 812 | break; |
| 813 | case WLAN_EID_RSN: |
| 814 | elems->rsn = pos; |
| 815 | elems->rsn_len = elen; |
| 816 | break; |
| 817 | case WLAN_EID_ERP_INFO: |
Johannes Berg | 1946bed | 2013-03-27 14:31:53 +0100 | [diff] [blame] | 818 | if (elen >= 1) |
| 819 | elems->erp_info = pos; |
| 820 | else |
| 821 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 822 | break; |
| 823 | case WLAN_EID_EXT_SUPP_RATES: |
| 824 | elems->ext_supp_rates = pos; |
| 825 | elems->ext_supp_rates_len = elen; |
| 826 | break; |
| 827 | case WLAN_EID_HT_CAPABILITY: |
| 828 | if (elen >= sizeof(struct ieee80211_ht_cap)) |
| 829 | elems->ht_cap_elem = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 830 | else |
| 831 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 832 | break; |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 833 | case WLAN_EID_HT_OPERATION: |
| 834 | if (elen >= sizeof(struct ieee80211_ht_operation)) |
| 835 | elems->ht_operation = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 836 | else |
| 837 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 838 | break; |
Mahesh Palivela | 818255e | 2012-10-10 11:33:04 +0000 | [diff] [blame] | 839 | case WLAN_EID_VHT_CAPABILITY: |
| 840 | if (elen >= sizeof(struct ieee80211_vht_cap)) |
| 841 | elems->vht_cap_elem = (void *)pos; |
| 842 | else |
| 843 | elem_parse_failed = true; |
| 844 | break; |
| 845 | case WLAN_EID_VHT_OPERATION: |
| 846 | if (elen >= sizeof(struct ieee80211_vht_operation)) |
| 847 | elems->vht_operation = (void *)pos; |
| 848 | else |
| 849 | elem_parse_failed = true; |
| 850 | break; |
Johannes Berg | bee7f58 | 2013-02-07 22:24:55 +0100 | [diff] [blame] | 851 | case WLAN_EID_OPMODE_NOTIF: |
| 852 | if (elen > 0) |
| 853 | elems->opmode_notif = pos; |
| 854 | else |
| 855 | elem_parse_failed = true; |
| 856 | break; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 857 | case WLAN_EID_MESH_ID: |
| 858 | elems->mesh_id = pos; |
| 859 | elems->mesh_id_len = elen; |
| 860 | break; |
| 861 | case WLAN_EID_MESH_CONFIG: |
| 862 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) |
| 863 | elems->mesh_config = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 864 | else |
| 865 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 866 | break; |
| 867 | case WLAN_EID_PEER_MGMT: |
| 868 | elems->peering = pos; |
| 869 | elems->peering_len = elen; |
| 870 | break; |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 871 | case WLAN_EID_MESH_AWAKE_WINDOW: |
| 872 | if (elen >= 2) |
| 873 | elems->awake_window = (void *)pos; |
| 874 | break; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 875 | case WLAN_EID_PREQ: |
| 876 | elems->preq = pos; |
| 877 | elems->preq_len = elen; |
| 878 | break; |
| 879 | case WLAN_EID_PREP: |
| 880 | elems->prep = pos; |
| 881 | elems->prep_len = elen; |
| 882 | break; |
| 883 | case WLAN_EID_PERR: |
| 884 | elems->perr = pos; |
| 885 | elems->perr_len = elen; |
| 886 | break; |
| 887 | case WLAN_EID_RANN: |
| 888 | if (elen >= sizeof(struct ieee80211_rann_ie)) |
| 889 | elems->rann = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 890 | else |
| 891 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 892 | break; |
| 893 | case WLAN_EID_CHANNEL_SWITCH: |
Johannes Berg | 5bc1420 | 2012-08-01 16:13:02 +0200 | [diff] [blame] | 894 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
| 895 | elem_parse_failed = true; |
| 896 | break; |
| 897 | } |
| 898 | elems->ch_switch_ie = (void *)pos; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 899 | break; |
Johannes Berg | b4f286a1 | 2013-03-26 14:13:58 +0100 | [diff] [blame] | 900 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
| 901 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { |
| 902 | elem_parse_failed = true; |
| 903 | break; |
| 904 | } |
| 905 | elems->ext_chansw_ie = (void *)pos; |
| 906 | break; |
Johannes Berg | 85220d7 | 2013-03-25 18:29:27 +0100 | [diff] [blame] | 907 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
| 908 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { |
| 909 | elem_parse_failed = true; |
| 910 | break; |
| 911 | } |
| 912 | elems->sec_chan_offs = (void *)pos; |
| 913 | break; |
Johannes Berg | b2e506b | 2013-03-26 14:54:16 +0100 | [diff] [blame] | 914 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
| 915 | if (!action || |
| 916 | elen != sizeof(*elems->wide_bw_chansw_ie)) { |
| 917 | elem_parse_failed = true; |
| 918 | break; |
| 919 | } |
| 920 | elems->wide_bw_chansw_ie = (void *)pos; |
| 921 | break; |
| 922 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: |
| 923 | if (action) { |
| 924 | elem_parse_failed = true; |
| 925 | break; |
| 926 | } |
| 927 | /* |
| 928 | * This is a bit tricky, but as we only care about |
| 929 | * the wide bandwidth channel switch element, so |
| 930 | * just parse it out manually. |
| 931 | */ |
| 932 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, |
| 933 | pos, elen); |
| 934 | if (ie) { |
| 935 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) |
| 936 | elems->wide_bw_chansw_ie = |
| 937 | (void *)(ie + 2); |
| 938 | else |
| 939 | elem_parse_failed = true; |
| 940 | } |
| 941 | break; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 942 | case WLAN_EID_COUNTRY: |
| 943 | elems->country_elem = pos; |
| 944 | elems->country_elem_len = elen; |
| 945 | break; |
| 946 | case WLAN_EID_PWR_CONSTRAINT: |
Johannes Berg | 761a48d | 2012-09-05 13:07:00 +0200 | [diff] [blame] | 947 | if (elen != 1) { |
| 948 | elem_parse_failed = true; |
| 949 | break; |
| 950 | } |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 951 | elems->pwr_constr_elem = pos; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 952 | break; |
| 953 | case WLAN_EID_TIMEOUT_INTERVAL: |
Johannes Berg | 79ba1d8 | 2013-03-27 14:38:07 +0100 | [diff] [blame] | 954 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
| 955 | elems->timeout_int = (void *)pos; |
| 956 | else |
| 957 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 958 | break; |
| 959 | default: |
| 960 | break; |
| 961 | } |
| 962 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 963 | if (elem_parse_failed) |
| 964 | elems->parse_error = true; |
| 965 | else |
Johannes Berg | 5df4569 | 2012-10-24 14:22:37 +0200 | [diff] [blame] | 966 | __set_bit(id, seen_elems); |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 967 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 968 | left -= elen; |
| 969 | pos += elen; |
| 970 | } |
| 971 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 972 | if (left != 0) |
| 973 | elems->parse_error = true; |
| 974 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 975 | return crc; |
| 976 | } |
| 977 | |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 978 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
| 979 | bool bss_notify) |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 980 | { |
| 981 | struct ieee80211_local *local = sdata->local; |
| 982 | struct ieee80211_tx_queue_params qparam; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 983 | struct ieee80211_chanctx_conf *chanctx_conf; |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 984 | int ac; |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 985 | bool use_11b, enable_qos; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 986 | int aCWmin, aCWmax; |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 987 | |
| 988 | if (!local->ops->conf_tx) |
| 989 | return; |
| 990 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 991 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 992 | return; |
| 993 | |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 994 | memset(&qparam, 0, sizeof(qparam)); |
| 995 | |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 996 | rcu_read_lock(); |
| 997 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); |
| 998 | use_11b = (chanctx_conf && |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 999 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 1000 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1001 | rcu_read_unlock(); |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 1002 | |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 1003 | /* |
| 1004 | * By default disable QoS in STA mode for old access points, which do |
| 1005 | * not support 802.11e. New APs will provide proper queue parameters, |
| 1006 | * that we will configure later. |
| 1007 | */ |
| 1008 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); |
| 1009 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 1010 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 1011 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
| 1012 | aCWmax = 1023; |
| 1013 | if (use_11b) |
| 1014 | aCWmin = 31; |
| 1015 | else |
| 1016 | aCWmin = 15; |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 1017 | |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 1018 | if (enable_qos) { |
| 1019 | switch (ac) { |
| 1020 | case IEEE80211_AC_BK: |
| 1021 | qparam.cw_max = aCWmax; |
| 1022 | qparam.cw_min = aCWmin; |
| 1023 | qparam.txop = 0; |
| 1024 | qparam.aifs = 7; |
| 1025 | break; |
| 1026 | /* never happens but let's not leave undefined */ |
| 1027 | default: |
| 1028 | case IEEE80211_AC_BE: |
| 1029 | qparam.cw_max = aCWmax; |
| 1030 | qparam.cw_min = aCWmin; |
| 1031 | qparam.txop = 0; |
| 1032 | qparam.aifs = 3; |
| 1033 | break; |
| 1034 | case IEEE80211_AC_VI: |
| 1035 | qparam.cw_max = aCWmin; |
| 1036 | qparam.cw_min = (aCWmin + 1) / 2 - 1; |
| 1037 | if (use_11b) |
| 1038 | qparam.txop = 6016/32; |
| 1039 | else |
| 1040 | qparam.txop = 3008/32; |
| 1041 | qparam.aifs = 2; |
| 1042 | break; |
| 1043 | case IEEE80211_AC_VO: |
| 1044 | qparam.cw_max = (aCWmin + 1) / 2 - 1; |
| 1045 | qparam.cw_min = (aCWmin + 1) / 4 - 1; |
| 1046 | if (use_11b) |
| 1047 | qparam.txop = 3264/32; |
| 1048 | else |
| 1049 | qparam.txop = 1504/32; |
| 1050 | qparam.aifs = 2; |
| 1051 | break; |
| 1052 | } |
| 1053 | } else { |
| 1054 | /* Confiure old 802.11b/g medium access rules. */ |
Johannes Berg | 7ba10a8 | 2009-05-27 09:41:06 +0200 | [diff] [blame] | 1055 | qparam.cw_max = aCWmax; |
| 1056 | qparam.cw_min = aCWmin; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 1057 | qparam.txop = 0; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 1058 | qparam.aifs = 2; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 1059 | } |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 1060 | |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 1061 | qparam.uapsd = false; |
| 1062 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 1063 | sdata->tx_conf[ac] = qparam; |
| 1064 | drv_conf_tx(local, sdata, ac, &qparam); |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 1065 | } |
Stanislaw Gruszka | e1b3ec1 | 2010-03-29 12:18:34 +0200 | [diff] [blame] | 1066 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1067 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
| 1068 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 1069 | sdata->vif.bss_conf.qos = enable_qos; |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 1070 | if (bss_notify) |
| 1071 | ieee80211_bss_info_change_notify(sdata, |
| 1072 | BSS_CHANGED_QOS); |
Sujith | d973497 | 2010-07-23 10:47:11 +0530 | [diff] [blame] | 1073 | } |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 1074 | } |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 1075 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1076 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
Jouni Malinen | 700e8ea | 2012-09-30 19:29:37 +0300 | [diff] [blame] | 1077 | u16 transaction, u16 auth_alg, u16 status, |
Johannes Berg | 4a3cb70 | 2013-02-12 16:43:19 +0100 | [diff] [blame] | 1078 | const u8 *extra, size_t extra_len, const u8 *da, |
Johannes Berg | 1672c0e3 | 2013-01-29 15:02:27 +0100 | [diff] [blame] | 1079 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
| 1080 | u32 tx_flags) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1081 | { |
| 1082 | struct ieee80211_local *local = sdata->local; |
| 1083 | struct sk_buff *skb; |
| 1084 | struct ieee80211_mgmt *mgmt; |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 1085 | int err; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1086 | |
| 1087 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
Jouni Malinen | 65fc73a | 2009-03-20 21:21:16 +0200 | [diff] [blame] | 1088 | sizeof(*mgmt) + 6 + extra_len); |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 1089 | if (!skb) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1090 | return; |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 1091 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1092 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1093 | |
| 1094 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 1095 | memset(mgmt, 0, 24 + 6); |
| 1096 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1097 | IEEE80211_STYPE_AUTH); |
Antonio Quartulli | efa6a09 | 2012-01-09 19:43:06 +0100 | [diff] [blame] | 1098 | memcpy(mgmt->da, da, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1099 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1100 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
| 1101 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); |
| 1102 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
Jouni Malinen | 700e8ea | 2012-09-30 19:29:37 +0300 | [diff] [blame] | 1103 | mgmt->u.auth.status_code = cpu_to_le16(status); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1104 | if (extra) |
| 1105 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1106 | |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 1107 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
| 1108 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 1109 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); |
| 1110 | WARN_ON(err); |
| 1111 | } |
| 1112 | |
Johannes Berg | 1672c0e3 | 2013-01-29 15:02:27 +0100 | [diff] [blame] | 1113 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
| 1114 | tx_flags; |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 1115 | ieee80211_tx_skb(sdata, skb); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1116 | } |
| 1117 | |
Antonio Quartulli | 6ae1677 | 2012-09-07 13:28:52 +0200 | [diff] [blame] | 1118 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
| 1119 | const u8 *bssid, u16 stype, u16 reason, |
| 1120 | bool send_frame, u8 *frame_buf) |
| 1121 | { |
| 1122 | struct ieee80211_local *local = sdata->local; |
| 1123 | struct sk_buff *skb; |
| 1124 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; |
| 1125 | |
| 1126 | /* build frame */ |
| 1127 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
| 1128 | mgmt->duration = 0; /* initialize only */ |
| 1129 | mgmt->seq_ctrl = 0; /* initialize only */ |
| 1130 | memcpy(mgmt->da, bssid, ETH_ALEN); |
| 1131 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
| 1132 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
| 1133 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
| 1134 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
| 1135 | |
| 1136 | if (send_frame) { |
| 1137 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 1138 | IEEE80211_DEAUTH_FRAME_LEN); |
| 1139 | if (!skb) |
| 1140 | return; |
| 1141 | |
| 1142 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1143 | |
| 1144 | /* copy in frame */ |
| 1145 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), |
| 1146 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); |
| 1147 | |
| 1148 | if (sdata->vif.type != NL80211_IFTYPE_STATION || |
| 1149 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) |
| 1150 | IEEE80211_SKB_CB(skb)->flags |= |
| 1151 | IEEE80211_TX_INTFL_DONT_ENCRYPT; |
| 1152 | |
| 1153 | ieee80211_tx_skb(sdata, skb); |
| 1154 | } |
| 1155 | } |
| 1156 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1157 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1158 | size_t buffer_len, const u8 *ie, size_t ie_len, |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1159 | enum ieee80211_band band, u32 rate_mask, |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1160 | struct cfg80211_chan_def *chandef) |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1161 | { |
| 1162 | struct ieee80211_supported_band *sband; |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1163 | u8 *pos = buffer, *end = buffer + buffer_len; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1164 | size_t offset = 0, noffset; |
| 1165 | int supp_rates_len, i; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1166 | u8 rates[32]; |
| 1167 | int num_rates; |
| 1168 | int ext_rates_len; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1169 | int shift; |
| 1170 | u32 rate_flags; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1171 | |
Johannes Berg | 4d36ec58 | 2009-10-27 20:59:55 +0100 | [diff] [blame] | 1172 | sband = local->hw.wiphy->bands[band]; |
Arik Nemtsov | d811b3d | 2012-07-09 19:57:28 +0300 | [diff] [blame] | 1173 | if (WARN_ON_ONCE(!sband)) |
| 1174 | return 0; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1175 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1176 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
| 1177 | shift = ieee80211_chandef_get_shift(chandef); |
| 1178 | |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1179 | num_rates = 0; |
| 1180 | for (i = 0; i < sband->n_bitrates; i++) { |
| 1181 | if ((BIT(i) & rate_mask) == 0) |
| 1182 | continue; /* skip rate */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1183 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
| 1184 | continue; |
| 1185 | |
| 1186 | rates[num_rates++] = |
| 1187 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, |
| 1188 | (1 << shift) * 5); |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1189 | } |
| 1190 | |
| 1191 | supp_rates_len = min_t(int, num_rates, 8); |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1192 | |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1193 | if (end - pos < 2 + supp_rates_len) |
| 1194 | goto out_err; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1195 | *pos++ = WLAN_EID_SUPP_RATES; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1196 | *pos++ = supp_rates_len; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1197 | memcpy(pos, rates, supp_rates_len); |
| 1198 | pos += supp_rates_len; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1199 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1200 | /* insert "request information" if in custom IEs */ |
| 1201 | if (ie && ie_len) { |
| 1202 | static const u8 before_extrates[] = { |
| 1203 | WLAN_EID_SSID, |
| 1204 | WLAN_EID_SUPP_RATES, |
| 1205 | WLAN_EID_REQUEST, |
| 1206 | }; |
| 1207 | noffset = ieee80211_ie_split(ie, ie_len, |
| 1208 | before_extrates, |
| 1209 | ARRAY_SIZE(before_extrates), |
| 1210 | offset); |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1211 | if (end - pos < noffset - offset) |
| 1212 | goto out_err; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1213 | memcpy(pos, ie + offset, noffset - offset); |
| 1214 | pos += noffset - offset; |
| 1215 | offset = noffset; |
| 1216 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1217 | |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1218 | ext_rates_len = num_rates - supp_rates_len; |
| 1219 | if (ext_rates_len > 0) { |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1220 | if (end - pos < 2 + ext_rates_len) |
| 1221 | goto out_err; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1222 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1223 | *pos++ = ext_rates_len; |
| 1224 | memcpy(pos, rates + supp_rates_len, ext_rates_len); |
| 1225 | pos += ext_rates_len; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1226 | } |
| 1227 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1228 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1229 | if (end - pos < 3) |
| 1230 | goto out_err; |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1231 | *pos++ = WLAN_EID_DS_PARAMS; |
| 1232 | *pos++ = 1; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1233 | *pos++ = ieee80211_frequency_to_channel( |
| 1234 | chandef->chan->center_freq); |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1235 | } |
| 1236 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1237 | /* insert custom IEs that go before HT */ |
| 1238 | if (ie && ie_len) { |
| 1239 | static const u8 before_ht[] = { |
| 1240 | WLAN_EID_SSID, |
| 1241 | WLAN_EID_SUPP_RATES, |
| 1242 | WLAN_EID_REQUEST, |
| 1243 | WLAN_EID_EXT_SUPP_RATES, |
| 1244 | WLAN_EID_DS_PARAMS, |
| 1245 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
| 1246 | }; |
| 1247 | noffset = ieee80211_ie_split(ie, ie_len, |
| 1248 | before_ht, ARRAY_SIZE(before_ht), |
| 1249 | offset); |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1250 | if (end - pos < noffset - offset) |
| 1251 | goto out_err; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1252 | memcpy(pos, ie + offset, noffset - offset); |
| 1253 | pos += noffset - offset; |
| 1254 | offset = noffset; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1255 | } |
| 1256 | |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1257 | if (sband->ht_cap.ht_supported) { |
| 1258 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) |
| 1259 | goto out_err; |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1260 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
| 1261 | sband->ht_cap.cap); |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1262 | } |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 1263 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1264 | /* |
| 1265 | * If adding more here, adjust code in main.c |
| 1266 | * that calculates local->scan_ies_len. |
| 1267 | */ |
| 1268 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1269 | /* add any remaining custom IEs */ |
| 1270 | if (ie && ie_len) { |
| 1271 | noffset = ie_len; |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1272 | if (end - pos < noffset - offset) |
| 1273 | goto out_err; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1274 | memcpy(pos, ie + offset, noffset - offset); |
| 1275 | pos += noffset - offset; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1276 | } |
| 1277 | |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1278 | if (sband->vht_cap.vht_supported) { |
| 1279 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) |
| 1280 | goto out_err; |
Mahesh Palivela | ba0afa2f | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1281 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
| 1282 | sband->vht_cap.cap); |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1283 | } |
Mahesh Palivela | ba0afa2f | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1284 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1285 | return pos - buffer; |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1286 | out_err: |
| 1287 | WARN_ONCE(1, "not enough space for preq IEs\n"); |
| 1288 | return pos - buffer; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1289 | } |
| 1290 | |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1291 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 85a237f | 2011-07-18 18:08:36 +0200 | [diff] [blame] | 1292 | u8 *dst, u32 ratemask, |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 1293 | struct ieee80211_channel *chan, |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1294 | const u8 *ssid, size_t ssid_len, |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1295 | const u8 *ie, size_t ie_len, |
| 1296 | bool directed) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1297 | { |
| 1298 | struct ieee80211_local *local = sdata->local; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1299 | struct cfg80211_chan_def chandef; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1300 | struct sk_buff *skb; |
| 1301 | struct ieee80211_mgmt *mgmt; |
Johannes Berg | b9a9ada | 2012-11-29 13:00:10 +0100 | [diff] [blame] | 1302 | int ies_len; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1303 | |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1304 | /* |
| 1305 | * Do not send DS Channel parameter for directed probe requests |
| 1306 | * in order to maximize the chance that we get a response. Some |
| 1307 | * badly-behaved APs don't respond when this parameter is included. |
| 1308 | */ |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1309 | chandef.width = sdata->vif.bss_conf.chandef.width; |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1310 | if (directed) |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1311 | chandef.chan = NULL; |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1312 | else |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1313 | chandef.chan = chan; |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1314 | |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1315 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
Johannes Berg | b9a9ada | 2012-11-29 13:00:10 +0100 | [diff] [blame] | 1316 | ssid, ssid_len, 100 + ie_len); |
Johannes Berg | 5b2bbf7 | 2011-11-08 13:04:41 +0100 | [diff] [blame] | 1317 | if (!skb) |
Johannes Berg | b9a9ada | 2012-11-29 13:00:10 +0100 | [diff] [blame] | 1318 | return NULL; |
| 1319 | |
| 1320 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
| 1321 | skb_tailroom(skb), |
Johannes Berg | c604b9f | 2012-11-29 12:45:18 +0100 | [diff] [blame] | 1322 | ie, ie_len, chan->band, |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1323 | ratemask, &chandef); |
Johannes Berg | b9a9ada | 2012-11-29 13:00:10 +0100 | [diff] [blame] | 1324 | skb_put(skb, ies_len); |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1325 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1326 | if (dst) { |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1327 | mgmt = (struct ieee80211_mgmt *) skb->data; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1328 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 1329 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1330 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1331 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 1332 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
Johannes Berg | 5b2bbf7 | 2011-11-08 13:04:41 +0100 | [diff] [blame] | 1333 | |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1334 | return skb; |
| 1335 | } |
| 1336 | |
| 1337 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
| 1338 | const u8 *ssid, size_t ssid_len, |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1339 | const u8 *ie, size_t ie_len, |
Johannes Berg | 1672c0e3 | 2013-01-29 15:02:27 +0100 | [diff] [blame] | 1340 | u32 ratemask, bool directed, u32 tx_flags, |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1341 | struct ieee80211_channel *channel, bool scan) |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1342 | { |
| 1343 | struct sk_buff *skb; |
| 1344 | |
Johannes Berg | fe94fe0 | 2012-07-30 12:26:34 +0200 | [diff] [blame] | 1345 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 1346 | ssid, ssid_len, |
Johannes Berg | 85a237f | 2011-07-18 18:08:36 +0200 | [diff] [blame] | 1347 | ie, ie_len, directed); |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1348 | if (skb) { |
Johannes Berg | 1672c0e3 | 2013-01-29 15:02:27 +0100 | [diff] [blame] | 1349 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1350 | if (scan) |
| 1351 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); |
| 1352 | else |
| 1353 | ieee80211_tx_skb(sdata, skb); |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1354 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1355 | } |
| 1356 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1357 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1358 | struct ieee802_11_elems *elems, |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1359 | enum ieee80211_band band, u32 *basic_rates) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1360 | { |
| 1361 | struct ieee80211_supported_band *sband; |
| 1362 | struct ieee80211_rate *bitrates; |
| 1363 | size_t num_rates; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1364 | u32 supp_rates, rate_flags; |
| 1365 | int i, j, shift; |
| 1366 | sband = sdata->local->hw.wiphy->bands[band]; |
| 1367 | |
| 1368 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); |
| 1369 | shift = ieee80211_vif_get_shift(&sdata->vif); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1370 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 1371 | if (WARN_ON(!sband)) |
| 1372 | return 1; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1373 | |
| 1374 | bitrates = sband->bitrates; |
| 1375 | num_rates = sband->n_bitrates; |
| 1376 | supp_rates = 0; |
| 1377 | for (i = 0; i < elems->supp_rates_len + |
| 1378 | elems->ext_supp_rates_len; i++) { |
| 1379 | u8 rate = 0; |
| 1380 | int own_rate; |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1381 | bool is_basic; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1382 | if (i < elems->supp_rates_len) |
| 1383 | rate = elems->supp_rates[i]; |
| 1384 | else if (elems->ext_supp_rates) |
| 1385 | rate = elems->ext_supp_rates |
| 1386 | [i - elems->supp_rates_len]; |
| 1387 | own_rate = 5 * (rate & 0x7f); |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1388 | is_basic = !!(rate & 0x80); |
| 1389 | |
| 1390 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) |
| 1391 | continue; |
| 1392 | |
| 1393 | for (j = 0; j < num_rates; j++) { |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 1394 | int brate; |
| 1395 | if ((rate_flags & sband->bitrates[j].flags) |
| 1396 | != rate_flags) |
| 1397 | continue; |
| 1398 | |
| 1399 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, |
| 1400 | 1 << shift); |
| 1401 | |
| 1402 | if (brate == own_rate) { |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1403 | supp_rates |= BIT(j); |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1404 | if (basic_rates && is_basic) |
| 1405 | *basic_rates |= BIT(j); |
| 1406 | } |
| 1407 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1408 | } |
| 1409 | return supp_rates; |
| 1410 | } |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1411 | |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1412 | void ieee80211_stop_device(struct ieee80211_local *local) |
| 1413 | { |
| 1414 | ieee80211_led_radio(local, false); |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 1415 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1416 | |
| 1417 | cancel_work_sync(&local->reconfig_filter); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1418 | |
| 1419 | flush_workqueue(local->workqueue); |
Lennert Buytenhek | 678f415 | 2010-01-10 14:07:53 +0100 | [diff] [blame] | 1420 | drv_stop(local); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1421 | } |
| 1422 | |
Stanislaw Gruszka | 153a5fc | 2013-02-28 10:55:30 +0100 | [diff] [blame] | 1423 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
| 1424 | struct ieee80211_sub_if_data *sdata) |
| 1425 | { |
| 1426 | struct ieee80211_chanctx_conf *conf; |
| 1427 | struct ieee80211_chanctx *ctx; |
| 1428 | |
| 1429 | if (!local->use_chanctx) |
| 1430 | return; |
| 1431 | |
| 1432 | mutex_lock(&local->chanctx_mtx); |
| 1433 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
| 1434 | lockdep_is_held(&local->chanctx_mtx)); |
| 1435 | if (conf) { |
| 1436 | ctx = container_of(conf, struct ieee80211_chanctx, conf); |
| 1437 | drv_assign_vif_chanctx(local, sdata, ctx); |
| 1438 | } |
| 1439 | mutex_unlock(&local->chanctx_mtx); |
| 1440 | } |
| 1441 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1442 | int ieee80211_reconfig(struct ieee80211_local *local) |
| 1443 | { |
| 1444 | struct ieee80211_hw *hw = &local->hw; |
| 1445 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1446 | struct ieee80211_chanctx *ctx; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1447 | struct sta_info *sta; |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1448 | int res, i; |
Johannes Berg | d888130 | 2013-01-10 23:55:33 +0100 | [diff] [blame] | 1449 | bool reconfig_due_to_wowlan = false; |
| 1450 | |
Johannes Berg | 8f21b0a | 2013-01-11 00:28:01 +0100 | [diff] [blame] | 1451 | #ifdef CONFIG_PM |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1452 | if (local->suspended) |
| 1453 | local->resuming = true; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1454 | |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1455 | if (local->wowlan) { |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1456 | res = drv_resume(local); |
Johannes Berg | 27b3eb9 | 2013-08-07 20:11:55 +0200 | [diff] [blame] | 1457 | local->wowlan = false; |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1458 | if (res < 0) { |
| 1459 | local->resuming = false; |
| 1460 | return res; |
| 1461 | } |
| 1462 | if (res == 0) |
| 1463 | goto wake_up; |
| 1464 | WARN_ON(res > 1); |
| 1465 | /* |
| 1466 | * res is 1, which means the driver requested |
| 1467 | * to go through a regular reset on wakeup. |
| 1468 | */ |
Johannes Berg | d888130 | 2013-01-10 23:55:33 +0100 | [diff] [blame] | 1469 | reconfig_due_to_wowlan = true; |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1470 | } |
| 1471 | #endif |
Johannes Berg | 94f9b97 | 2011-07-14 16:48:54 +0200 | [diff] [blame] | 1472 | /* everything else happens only if HW was up & running */ |
| 1473 | if (!local->open_count) |
| 1474 | goto wake_up; |
| 1475 | |
| 1476 | /* |
| 1477 | * Upon resume hardware can sometimes be goofy due to |
| 1478 | * various platform / driver / bus issues, so restarting |
| 1479 | * the device may at times not work immediately. Propagate |
| 1480 | * the error. |
| 1481 | */ |
| 1482 | res = drv_start(local); |
| 1483 | if (res) { |
| 1484 | WARN(local->suspended, "Hardware became unavailable " |
| 1485 | "upon resume. This could be a software issue " |
| 1486 | "prior to suspend or a hardware issue.\n"); |
| 1487 | return res; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1488 | } |
| 1489 | |
Yogesh Ashok Powar | 7f28197 | 2011-12-30 16:34:25 +0530 | [diff] [blame] | 1490 | /* setup fragmentation threshold */ |
| 1491 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); |
| 1492 | |
| 1493 | /* setup RTS threshold */ |
| 1494 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); |
| 1495 | |
| 1496 | /* reset coverage class */ |
| 1497 | drv_set_coverage_class(local, hw->wiphy->coverage_class); |
| 1498 | |
Johannes Berg | 94f9b97 | 2011-07-14 16:48:54 +0200 | [diff] [blame] | 1499 | ieee80211_led_radio(local, true); |
| 1500 | ieee80211_mod_tpt_led_trig(local, |
| 1501 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); |
| 1502 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1503 | /* add interfaces */ |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 1504 | sdata = rtnl_dereference(local->monitor_sdata); |
| 1505 | if (sdata) { |
Johannes Berg | 3c3e21e | 2013-03-27 23:20:27 +0100 | [diff] [blame] | 1506 | /* in HW restart it exists already */ |
| 1507 | WARN_ON(local->resuming); |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 1508 | res = drv_add_interface(local, sdata); |
| 1509 | if (WARN_ON(res)) { |
| 1510 | rcu_assign_pointer(local->monitor_sdata, NULL); |
| 1511 | synchronize_net(); |
| 1512 | kfree(sdata); |
| 1513 | } |
| 1514 | } |
| 1515 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1516 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1517 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
| 1518 | sdata->vif.type != NL80211_IFTYPE_MONITOR && |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1519 | ieee80211_sdata_running(sdata)) |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 1520 | res = drv_add_interface(local, sdata); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1521 | } |
| 1522 | |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1523 | /* add channel contexts */ |
Arend van Spriel | f0dea9c | 2012-11-19 12:01:05 +0100 | [diff] [blame] | 1524 | if (local->use_chanctx) { |
| 1525 | mutex_lock(&local->chanctx_mtx); |
| 1526 | list_for_each_entry(ctx, &local->chanctx_list, list) |
| 1527 | WARN_ON(drv_add_chanctx(local, ctx)); |
| 1528 | mutex_unlock(&local->chanctx_mtx); |
| 1529 | } |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1530 | |
Johannes Berg | 6352c87 | 2012-11-07 12:40:41 +0100 | [diff] [blame] | 1531 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 6352c87 | 2012-11-07 12:40:41 +0100 | [diff] [blame] | 1532 | if (!ieee80211_sdata_running(sdata)) |
| 1533 | continue; |
Stanislaw Gruszka | 153a5fc | 2013-02-28 10:55:30 +0100 | [diff] [blame] | 1534 | ieee80211_assign_chanctx(local, sdata); |
Johannes Berg | 6352c87 | 2012-11-07 12:40:41 +0100 | [diff] [blame] | 1535 | } |
| 1536 | |
Johannes Berg | fe5f255 | 2012-11-19 22:19:08 +0100 | [diff] [blame] | 1537 | sdata = rtnl_dereference(local->monitor_sdata); |
Stanislaw Gruszka | 153a5fc | 2013-02-28 10:55:30 +0100 | [diff] [blame] | 1538 | if (sdata && ieee80211_sdata_running(sdata)) |
| 1539 | ieee80211_assign_chanctx(local, sdata); |
Johannes Berg | fe5f255 | 2012-11-19 22:19:08 +0100 | [diff] [blame] | 1540 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1541 | /* add STAs back */ |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1542 | mutex_lock(&local->sta_mtx); |
| 1543 | list_for_each_entry(sta, &local->sta_list, list) { |
Arik Nemtsov | 2e8d397 | 2012-06-03 23:31:56 +0300 | [diff] [blame] | 1544 | enum ieee80211_sta_state state; |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1545 | |
Arik Nemtsov | 2e8d397 | 2012-06-03 23:31:56 +0300 | [diff] [blame] | 1546 | if (!sta->uploaded) |
| 1547 | continue; |
| 1548 | |
| 1549 | /* AP-mode stations will be added later */ |
| 1550 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) |
| 1551 | continue; |
| 1552 | |
| 1553 | for (state = IEEE80211_STA_NOTEXIST; |
| 1554 | state < sta->sta_state; state++) |
| 1555 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, |
| 1556 | state + 1)); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1557 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1558 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1559 | |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1560 | /* reconfigure tx conf */ |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 1561 | if (hw->queues >= IEEE80211_NUM_ACS) { |
| 1562 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1563 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
| 1564 | sdata->vif.type == NL80211_IFTYPE_MONITOR || |
| 1565 | !ieee80211_sdata_running(sdata)) |
| 1566 | continue; |
Eliad Peller | f6f3def | 2011-09-25 20:06:54 +0300 | [diff] [blame] | 1567 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 1568 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
| 1569 | drv_conf_tx(local, sdata, i, |
| 1570 | &sdata->tx_conf[i]); |
| 1571 | } |
Eliad Peller | f6f3def | 2011-09-25 20:06:54 +0300 | [diff] [blame] | 1572 | } |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1573 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1574 | /* reconfigure hardware */ |
| 1575 | ieee80211_hw_config(local, ~0); |
| 1576 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1577 | ieee80211_configure_filter(local); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1578 | |
| 1579 | /* Finally also reconfigure all the BSS information */ |
| 1580 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1581 | u32 changed; |
| 1582 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 1583 | if (!ieee80211_sdata_running(sdata)) |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1584 | continue; |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1585 | |
| 1586 | /* common change flags for all interface types */ |
| 1587 | changed = BSS_CHANGED_ERP_CTS_PROT | |
| 1588 | BSS_CHANGED_ERP_PREAMBLE | |
| 1589 | BSS_CHANGED_ERP_SLOT | |
| 1590 | BSS_CHANGED_HT | |
| 1591 | BSS_CHANGED_BASIC_RATES | |
| 1592 | BSS_CHANGED_BEACON_INT | |
| 1593 | BSS_CHANGED_BSSID | |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 1594 | BSS_CHANGED_CQM | |
Eliad Peller | 55de47f | 2011-11-01 15:16:55 +0200 | [diff] [blame] | 1595 | BSS_CHANGED_QOS | |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 1596 | BSS_CHANGED_IDLE | |
| 1597 | BSS_CHANGED_TXPOWER; |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1598 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1599 | switch (sdata->vif.type) { |
| 1600 | case NL80211_IFTYPE_STATION: |
Eliad Peller | 0d392e9 | 2011-12-12 14:10:49 +0200 | [diff] [blame] | 1601 | changed |= BSS_CHANGED_ASSOC | |
Eliad Peller | ab09587 | 2012-07-27 12:33:22 +0300 | [diff] [blame] | 1602 | BSS_CHANGED_ARP_FILTER | |
| 1603 | BSS_CHANGED_PS; |
Emmanuel Grumbach | c65dd14 | 2012-12-12 10:12:24 +0200 | [diff] [blame] | 1604 | |
Alexander Bondar | 989c650 | 2013-05-16 17:34:17 +0300 | [diff] [blame] | 1605 | /* Re-send beacon info report to the driver */ |
| 1606 | if (sdata->u.mgd.have_beacon) |
| 1607 | changed |= BSS_CHANGED_BEACON_INFO; |
Emmanuel Grumbach | c65dd14 | 2012-12-12 10:12:24 +0200 | [diff] [blame] | 1608 | |
Johannes Berg | 8d61ffa | 2013-05-10 12:32:47 +0200 | [diff] [blame] | 1609 | sdata_lock(sdata); |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1610 | ieee80211_bss_info_change_notify(sdata, changed); |
Johannes Berg | 8d61ffa | 2013-05-10 12:32:47 +0200 | [diff] [blame] | 1611 | sdata_unlock(sdata); |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1612 | break; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1613 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1614 | changed |= BSS_CHANGED_IBSS; |
| 1615 | /* fall through */ |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1616 | case NL80211_IFTYPE_AP: |
Johannes Berg | 339afbf | 2012-11-14 15:21:17 +0100 | [diff] [blame] | 1617 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
Arik Nemtsov | e7979ac | 2011-11-22 19:33:18 +0200 | [diff] [blame] | 1618 | |
Johannes Berg | 1041638 | 2012-10-19 15:44:42 +0200 | [diff] [blame] | 1619 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Arik Nemtsov | e7979ac | 2011-11-22 19:33:18 +0200 | [diff] [blame] | 1620 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
| 1621 | |
Johannes Berg | 1041638 | 2012-10-19 15:44:42 +0200 | [diff] [blame] | 1622 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
| 1623 | drv_start_ap(local, sdata); |
| 1624 | } |
| 1625 | |
Arik Nemtsov | 7827493 | 2011-09-04 11:11:32 +0300 | [diff] [blame] | 1626 | /* fall through */ |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1627 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 8da3493 | 2012-12-14 14:17:26 +0100 | [diff] [blame] | 1628 | if (sdata->vif.bss_conf.enable_beacon) { |
| 1629 | changed |= BSS_CHANGED_BEACON | |
| 1630 | BSS_CHANGED_BEACON_ENABLED; |
| 1631 | ieee80211_bss_info_change_notify(sdata, changed); |
| 1632 | } |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1633 | break; |
| 1634 | case NL80211_IFTYPE_WDS: |
| 1635 | break; |
| 1636 | case NL80211_IFTYPE_AP_VLAN: |
| 1637 | case NL80211_IFTYPE_MONITOR: |
| 1638 | /* ignore virtual */ |
| 1639 | break; |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 1640 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1641 | changed = BSS_CHANGED_IDLE; |
| 1642 | break; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1643 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 1644 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1645 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1646 | case NL80211_IFTYPE_P2P_GO: |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1647 | WARN_ON(1); |
| 1648 | break; |
| 1649 | } |
| 1650 | } |
| 1651 | |
Eyal Shapira | 8e1b23b | 2011-11-09 12:29:06 +0200 | [diff] [blame] | 1652 | ieee80211_recalc_ps(local, -1); |
| 1653 | |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1654 | /* |
Eliad Peller | 6e1b1b2 | 2012-01-26 13:36:05 +0200 | [diff] [blame] | 1655 | * The sta might be in psm against the ap (e.g. because |
| 1656 | * this was the state before a hw restart), so we |
| 1657 | * explicitly send a null packet in order to make sure |
| 1658 | * it'll sync against the ap (and get out of psm). |
| 1659 | */ |
| 1660 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { |
| 1661 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1662 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| 1663 | continue; |
Johannes Berg | 20f544e | 2012-11-08 14:06:28 +0100 | [diff] [blame] | 1664 | if (!sdata->u.mgd.associated) |
| 1665 | continue; |
Eliad Peller | 6e1b1b2 | 2012-01-26 13:36:05 +0200 | [diff] [blame] | 1666 | |
| 1667 | ieee80211_send_nullfunc(local, sdata, 0); |
| 1668 | } |
| 1669 | } |
| 1670 | |
Arik Nemtsov | 2e8d397 | 2012-06-03 23:31:56 +0300 | [diff] [blame] | 1671 | /* APs are now beaconing, add back stations */ |
| 1672 | mutex_lock(&local->sta_mtx); |
| 1673 | list_for_each_entry(sta, &local->sta_list, list) { |
| 1674 | enum ieee80211_sta_state state; |
| 1675 | |
| 1676 | if (!sta->uploaded) |
| 1677 | continue; |
| 1678 | |
| 1679 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) |
| 1680 | continue; |
| 1681 | |
| 1682 | for (state = IEEE80211_STA_NOTEXIST; |
| 1683 | state < sta->sta_state; state++) |
| 1684 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, |
| 1685 | state + 1)); |
| 1686 | } |
| 1687 | mutex_unlock(&local->sta_mtx); |
| 1688 | |
Eyal Shapira | 7b21aea | 2012-05-29 02:00:22 -0700 | [diff] [blame] | 1689 | /* add back keys */ |
| 1690 | list_for_each_entry(sdata, &local->interfaces, list) |
| 1691 | if (ieee80211_sdata_running(sdata)) |
| 1692 | ieee80211_enable_keys(sdata); |
| 1693 | |
Eliad Peller | c620948 | 2012-07-02 15:08:25 +0300 | [diff] [blame] | 1694 | wake_up: |
Arik Nemtsov | 04800ad | 2012-06-06 11:25:02 +0300 | [diff] [blame] | 1695 | local->in_reconfig = false; |
| 1696 | barrier(); |
| 1697 | |
Johannes Berg | 3c3e21e | 2013-03-27 23:20:27 +0100 | [diff] [blame] | 1698 | if (local->monitors == local->open_count && local->monitors > 0) |
| 1699 | ieee80211_add_virtual_monitor(local); |
| 1700 | |
Eliad Peller | 6e1b1b2 | 2012-01-26 13:36:05 +0200 | [diff] [blame] | 1701 | /* |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1702 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation |
| 1703 | * sessions can be established after a resume. |
| 1704 | * |
| 1705 | * Also tear down aggregation sessions since reconfiguring |
| 1706 | * them in a hardware restart scenario is not easily done |
| 1707 | * right now, and the hardware will have lost information |
| 1708 | * about the sessions, but we and the AP still think they |
| 1709 | * are active. This is really a workaround though. |
| 1710 | */ |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1711 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1712 | mutex_lock(&local->sta_mtx); |
| 1713 | |
| 1714 | list_for_each_entry(sta, &local->sta_list, list) { |
Johannes Berg | c82c4a8 | 2012-07-18 13:31:31 +0200 | [diff] [blame] | 1715 | ieee80211_sta_tear_down_BA_sessions( |
| 1716 | sta, AGG_STOP_LOCAL_REQUEST); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 1717 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1718 | } |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1719 | |
| 1720 | mutex_unlock(&local->sta_mtx); |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1721 | } |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1722 | |
Johannes Berg | 445ea4e | 2013-02-13 12:25:28 +0100 | [diff] [blame] | 1723 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
| 1724 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1725 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1726 | /* |
| 1727 | * If this is for hw restart things are still running. |
| 1728 | * We may want to change that later, however. |
| 1729 | */ |
Johannes Berg | 8f21b0a | 2013-01-11 00:28:01 +0100 | [diff] [blame] | 1730 | if (!local->suspended || reconfig_due_to_wowlan) |
Johannes Berg | 9214ad7 | 2012-11-06 19:18:13 +0100 | [diff] [blame] | 1731 | drv_restart_complete(local); |
Johannes Berg | 8f21b0a | 2013-01-11 00:28:01 +0100 | [diff] [blame] | 1732 | |
| 1733 | if (!local->suspended) |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1734 | return 0; |
| 1735 | |
| 1736 | #ifdef CONFIG_PM |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1737 | /* first set suspended false, then resuming */ |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1738 | local->suspended = false; |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1739 | mb(); |
| 1740 | local->resuming = false; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1741 | |
Johannes Berg | b8360ab | 2013-04-29 14:57:44 +0200 | [diff] [blame] | 1742 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1743 | if (!ieee80211_sdata_running(sdata)) |
| 1744 | continue; |
| 1745 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
| 1746 | ieee80211_sta_restart(sdata); |
| 1747 | } |
| 1748 | |
Johannes Berg | 26d5953 | 2011-04-01 13:52:48 +0200 | [diff] [blame] | 1749 | mod_timer(&local->sta_cleanup, jiffies + 1); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1750 | #else |
| 1751 | WARN_ON(1); |
| 1752 | #endif |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1753 | return 0; |
| 1754 | } |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1755 | |
Johannes Berg | 95acac6 | 2011-07-12 12:30:59 +0200 | [diff] [blame] | 1756 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
| 1757 | { |
| 1758 | struct ieee80211_sub_if_data *sdata; |
| 1759 | struct ieee80211_local *local; |
| 1760 | struct ieee80211_key *key; |
| 1761 | |
| 1762 | if (WARN_ON(!vif)) |
| 1763 | return; |
| 1764 | |
| 1765 | sdata = vif_to_sdata(vif); |
| 1766 | local = sdata->local; |
| 1767 | |
| 1768 | if (WARN_ON(!local->resuming)) |
| 1769 | return; |
| 1770 | |
| 1771 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) |
| 1772 | return; |
| 1773 | |
| 1774 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; |
| 1775 | |
| 1776 | mutex_lock(&local->key_mtx); |
| 1777 | list_for_each_entry(key, &sdata->key_list, list) |
| 1778 | key->flags |= KEY_FLAG_TAINTED; |
| 1779 | mutex_unlock(&local->key_mtx); |
| 1780 | } |
| 1781 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); |
| 1782 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1783 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1784 | { |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1785 | struct ieee80211_local *local = sdata->local; |
| 1786 | struct ieee80211_chanctx_conf *chanctx_conf; |
| 1787 | struct ieee80211_chanctx *chanctx; |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1788 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1789 | mutex_lock(&local->chanctx_mtx); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1790 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1791 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
| 1792 | lockdep_is_held(&local->chanctx_mtx)); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1793 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1794 | if (WARN_ON_ONCE(!chanctx_conf)) |
Johannes Berg | 5d8e423 | 2012-09-11 10:17:11 +0200 | [diff] [blame] | 1795 | goto unlock; |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1796 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1797 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
| 1798 | ieee80211_recalc_smps_chanctx(local, chanctx); |
Johannes Berg | 5d8e423 | 2012-09-11 10:17:11 +0200 | [diff] [blame] | 1799 | unlock: |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1800 | mutex_unlock(&local->chanctx_mtx); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1801 | } |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1802 | |
| 1803 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
| 1804 | { |
| 1805 | int i; |
| 1806 | |
| 1807 | for (i = 0; i < n_ids; i++) |
| 1808 | if (ids[i] == id) |
| 1809 | return true; |
| 1810 | return false; |
| 1811 | } |
| 1812 | |
| 1813 | /** |
| 1814 | * ieee80211_ie_split - split an IE buffer according to ordering |
| 1815 | * |
| 1816 | * @ies: the IE buffer |
| 1817 | * @ielen: the length of the IE buffer |
| 1818 | * @ids: an array with element IDs that are allowed before |
| 1819 | * the split |
| 1820 | * @n_ids: the size of the element ID array |
| 1821 | * @offset: offset where to start splitting in the buffer |
| 1822 | * |
| 1823 | * This function splits an IE buffer by updating the @offset |
| 1824 | * variable to point to the location where the buffer should be |
| 1825 | * split. |
| 1826 | * |
| 1827 | * It assumes that the given IE buffer is well-formed, this |
| 1828 | * has to be guaranteed by the caller! |
| 1829 | * |
| 1830 | * It also assumes that the IEs in the buffer are ordered |
| 1831 | * correctly, if not the result of using this function will not |
| 1832 | * be ordered correctly either, i.e. it does no reordering. |
| 1833 | * |
| 1834 | * The function returns the offset where the next part of the |
| 1835 | * buffer starts, which may be @ielen if the entire (remainder) |
| 1836 | * of the buffer should be used. |
| 1837 | */ |
| 1838 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, |
| 1839 | const u8 *ids, int n_ids, size_t offset) |
| 1840 | { |
| 1841 | size_t pos = offset; |
| 1842 | |
| 1843 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) |
| 1844 | pos += 2 + ies[pos + 1]; |
| 1845 | |
| 1846 | return pos; |
| 1847 | } |
| 1848 | |
| 1849 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
| 1850 | { |
| 1851 | size_t pos = offset; |
| 1852 | |
| 1853 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) |
| 1854 | pos += 2 + ies[pos + 1]; |
| 1855 | |
| 1856 | return pos; |
| 1857 | } |
Meenakshi Venkataraman | 615f7b9 | 2011-07-08 08:46:22 -0700 | [diff] [blame] | 1858 | |
| 1859 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, |
| 1860 | int rssi_min_thold, |
| 1861 | int rssi_max_thold) |
| 1862 | { |
| 1863 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); |
| 1864 | |
| 1865 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
| 1866 | return; |
| 1867 | |
| 1868 | /* |
| 1869 | * Scale up threshold values before storing it, as the RSSI averaging |
| 1870 | * algorithm uses a scaled up value as well. Change this scaling |
| 1871 | * factor if the RSSI averaging algorithm changes. |
| 1872 | */ |
| 1873 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; |
| 1874 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; |
| 1875 | } |
| 1876 | |
| 1877 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, |
| 1878 | int rssi_min_thold, |
| 1879 | int rssi_max_thold) |
| 1880 | { |
| 1881 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1882 | |
| 1883 | WARN_ON(rssi_min_thold == rssi_max_thold || |
| 1884 | rssi_min_thold > rssi_max_thold); |
| 1885 | |
| 1886 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, |
| 1887 | rssi_max_thold); |
| 1888 | } |
| 1889 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); |
| 1890 | |
| 1891 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) |
| 1892 | { |
| 1893 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1894 | |
| 1895 | _ieee80211_enable_rssi_reports(sdata, 0, 0); |
| 1896 | } |
| 1897 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1898 | |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1899 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1900 | u16 cap) |
| 1901 | { |
| 1902 | __le16 tmp; |
| 1903 | |
| 1904 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 1905 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 1906 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 1907 | |
| 1908 | /* capability flags */ |
| 1909 | tmp = cpu_to_le16(cap); |
| 1910 | memcpy(pos, &tmp, sizeof(u16)); |
| 1911 | pos += sizeof(u16); |
| 1912 | |
| 1913 | /* AMPDU parameters */ |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1914 | *pos++ = ht_cap->ampdu_factor | |
| 1915 | (ht_cap->ampdu_density << |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1916 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
| 1917 | |
| 1918 | /* MCS set */ |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1919 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
| 1920 | pos += sizeof(ht_cap->mcs); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1921 | |
| 1922 | /* extended capabilities */ |
| 1923 | pos += sizeof(__le16); |
| 1924 | |
| 1925 | /* BF capabilities */ |
| 1926 | pos += sizeof(__le32); |
| 1927 | |
| 1928 | /* antenna selection */ |
| 1929 | pos += sizeof(u8); |
| 1930 | |
| 1931 | return pos; |
| 1932 | } |
| 1933 | |
Mahesh Palivela | ba0afa2f | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1934 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
Johannes Berg | cc3983d | 2012-12-07 12:45:06 +0100 | [diff] [blame] | 1935 | u32 cap) |
Mahesh Palivela | ba0afa2f | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1936 | { |
| 1937 | __le32 tmp; |
| 1938 | |
| 1939 | *pos++ = WLAN_EID_VHT_CAPABILITY; |
Mahesh Palivela | d495028 | 2012-10-10 11:25:40 +0000 | [diff] [blame] | 1940 | *pos++ = sizeof(struct ieee80211_vht_cap); |
| 1941 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); |
Mahesh Palivela | ba0afa2f | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1942 | |
| 1943 | /* capability flags */ |
| 1944 | tmp = cpu_to_le32(cap); |
| 1945 | memcpy(pos, &tmp, sizeof(u32)); |
| 1946 | pos += sizeof(u32); |
| 1947 | |
| 1948 | /* VHT MCS set */ |
| 1949 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); |
| 1950 | pos += sizeof(vht_cap->vht_mcs); |
| 1951 | |
| 1952 | return pos; |
| 1953 | } |
| 1954 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1955 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 1956 | const struct cfg80211_chan_def *chandef, |
Ashok Nagarajan | 431e315 | 2012-04-30 14:20:29 -0700 | [diff] [blame] | 1957 | u16 prot_mode) |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1958 | { |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1959 | struct ieee80211_ht_operation *ht_oper; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1960 | /* Build HT Information */ |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1961 | *pos++ = WLAN_EID_HT_OPERATION; |
| 1962 | *pos++ = sizeof(struct ieee80211_ht_operation); |
| 1963 | ht_oper = (struct ieee80211_ht_operation *)pos; |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 1964 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
| 1965 | chandef->chan->center_freq); |
| 1966 | switch (chandef->width) { |
| 1967 | case NL80211_CHAN_WIDTH_160: |
| 1968 | case NL80211_CHAN_WIDTH_80P80: |
| 1969 | case NL80211_CHAN_WIDTH_80: |
| 1970 | case NL80211_CHAN_WIDTH_40: |
| 1971 | if (chandef->center_freq1 > chandef->chan->center_freq) |
| 1972 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
| 1973 | else |
| 1974 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1975 | break; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1976 | default: |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1977 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1978 | break; |
| 1979 | } |
Thomas Pedersen | aee286c | 2012-04-18 19:24:14 -0700 | [diff] [blame] | 1980 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 1981 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
| 1982 | chandef->width != NL80211_CHAN_WIDTH_20) |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1983 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
Simon Wunderlich | ff3cc5f | 2011-11-30 16:56:33 +0100 | [diff] [blame] | 1984 | |
Ashok Nagarajan | 431e315 | 2012-04-30 14:20:29 -0700 | [diff] [blame] | 1985 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1986 | ht_oper->stbc_param = 0x0000; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1987 | |
| 1988 | /* It seems that Basic MCS set and Supported MCS set |
| 1989 | are identical for the first 10 bytes */ |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1990 | memset(&ht_oper->basic_set, 0, 16); |
| 1991 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1992 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1993 | return pos + sizeof(struct ieee80211_ht_operation); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1994 | } |
| 1995 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 1996 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
Johannes Berg | 4a3cb70 | 2013-02-12 16:43:19 +0100 | [diff] [blame] | 1997 | const struct ieee80211_ht_operation *ht_oper, |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 1998 | struct cfg80211_chan_def *chandef) |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1999 | { |
| 2000 | enum nl80211_channel_type channel_type; |
| 2001 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 2002 | if (!ht_oper) { |
| 2003 | cfg80211_chandef_create(chandef, control_chan, |
| 2004 | NL80211_CHAN_NO_HT); |
| 2005 | return; |
| 2006 | } |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 2007 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 2008 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 2009 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
| 2010 | channel_type = NL80211_CHAN_HT20; |
| 2011 | break; |
| 2012 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| 2013 | channel_type = NL80211_CHAN_HT40PLUS; |
| 2014 | break; |
| 2015 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| 2016 | channel_type = NL80211_CHAN_HT40MINUS; |
| 2017 | break; |
| 2018 | default: |
| 2019 | channel_type = NL80211_CHAN_NO_HT; |
| 2020 | } |
| 2021 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 2022 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 2023 | } |
| 2024 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2025 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
| 2026 | const struct ieee80211_supported_band *sband, |
| 2027 | const u8 *srates, int srates_len, u32 *rates) |
| 2028 | { |
| 2029 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); |
| 2030 | int shift = ieee80211_chandef_get_shift(chandef); |
| 2031 | struct ieee80211_rate *br; |
| 2032 | int brate, rate, i, j, count = 0; |
| 2033 | |
| 2034 | *rates = 0; |
| 2035 | |
| 2036 | for (i = 0; i < srates_len; i++) { |
| 2037 | rate = srates[i] & 0x7f; |
| 2038 | |
| 2039 | for (j = 0; j < sband->n_bitrates; j++) { |
| 2040 | br = &sband->bitrates[j]; |
| 2041 | if ((rate_flags & br->flags) != rate_flags) |
| 2042 | continue; |
| 2043 | |
| 2044 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); |
| 2045 | if (brate == rate) { |
| 2046 | *rates |= BIT(j); |
| 2047 | count++; |
| 2048 | break; |
| 2049 | } |
| 2050 | } |
| 2051 | } |
| 2052 | return count; |
| 2053 | } |
| 2054 | |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 2055 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 2056 | struct sk_buff *skb, bool need_basic, |
| 2057 | enum ieee80211_band band) |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2058 | { |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2059 | struct ieee80211_local *local = sdata->local; |
| 2060 | struct ieee80211_supported_band *sband; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2061 | int rate, shift; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2062 | u8 i, rates, *pos; |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 2063 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2064 | u32 rate_flags; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2065 | |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2066 | shift = ieee80211_vif_get_shift(&sdata->vif); |
| 2067 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 2068 | sband = local->hw.wiphy->bands[band]; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2069 | rates = 0; |
| 2070 | for (i = 0; i < sband->n_bitrates; i++) { |
| 2071 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
| 2072 | continue; |
| 2073 | rates++; |
| 2074 | } |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2075 | if (rates > 8) |
| 2076 | rates = 8; |
| 2077 | |
| 2078 | if (skb_tailroom(skb) < rates + 2) |
| 2079 | return -ENOMEM; |
| 2080 | |
| 2081 | pos = skb_put(skb, rates + 2); |
| 2082 | *pos++ = WLAN_EID_SUPP_RATES; |
| 2083 | *pos++ = rates; |
| 2084 | for (i = 0; i < rates; i++) { |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 2085 | u8 basic = 0; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2086 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
| 2087 | continue; |
| 2088 | |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 2089 | if (need_basic && basic_rates & BIT(i)) |
| 2090 | basic = 0x80; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2091 | rate = sband->bitrates[i].bitrate; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2092 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
| 2093 | 5 * (1 << shift)); |
| 2094 | *pos++ = basic | (u8) rate; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2095 | } |
| 2096 | |
| 2097 | return 0; |
| 2098 | } |
| 2099 | |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 2100 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 2101 | struct sk_buff *skb, bool need_basic, |
| 2102 | enum ieee80211_band band) |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2103 | { |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2104 | struct ieee80211_local *local = sdata->local; |
| 2105 | struct ieee80211_supported_band *sband; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2106 | int rate, skip, shift; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2107 | u8 i, exrates, *pos; |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 2108 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2109 | u32 rate_flags; |
| 2110 | |
| 2111 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); |
| 2112 | shift = ieee80211_vif_get_shift(&sdata->vif); |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2113 | |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 2114 | sband = local->hw.wiphy->bands[band]; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2115 | exrates = 0; |
| 2116 | for (i = 0; i < sband->n_bitrates; i++) { |
| 2117 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
| 2118 | continue; |
| 2119 | exrates++; |
| 2120 | } |
| 2121 | |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2122 | if (exrates > 8) |
| 2123 | exrates -= 8; |
| 2124 | else |
| 2125 | exrates = 0; |
| 2126 | |
| 2127 | if (skb_tailroom(skb) < exrates + 2) |
| 2128 | return -ENOMEM; |
| 2129 | |
| 2130 | if (exrates) { |
| 2131 | pos = skb_put(skb, exrates + 2); |
| 2132 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 2133 | *pos++ = exrates; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2134 | skip = 0; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2135 | for (i = 8; i < sband->n_bitrates; i++) { |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 2136 | u8 basic = 0; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2137 | if ((rate_flags & sband->bitrates[i].flags) |
| 2138 | != rate_flags) |
| 2139 | continue; |
| 2140 | if (skip++ < 8) |
| 2141 | continue; |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 2142 | if (need_basic && basic_rates & BIT(i)) |
| 2143 | basic = 0x80; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2144 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
| 2145 | 5 * (1 << shift)); |
| 2146 | *pos++ = basic | (u8) rate; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 2147 | } |
| 2148 | } |
| 2149 | return 0; |
| 2150 | } |
Wey-Yi Guy | 1dae27f | 2012-04-13 12:02:57 -0700 | [diff] [blame] | 2151 | |
| 2152 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) |
| 2153 | { |
| 2154 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 2155 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
| 2156 | |
Wey-Yi Guy | be6bcab | 2012-04-23 09:30:32 -0700 | [diff] [blame] | 2157 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
| 2158 | /* non-managed type inferfaces */ |
| 2159 | return 0; |
| 2160 | } |
Emmanuel Grumbach | 3a7bba6 | 2013-03-20 17:05:45 +0200 | [diff] [blame] | 2161 | return ifmgd->ave_beacon_signal / 16; |
Wey-Yi Guy | 1dae27f | 2012-04-13 12:02:57 -0700 | [diff] [blame] | 2162 | } |
Wey-Yi Guy | 0d8a0a1 | 2012-04-20 11:57:00 -0700 | [diff] [blame] | 2163 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 2164 | |
| 2165 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) |
| 2166 | { |
| 2167 | if (!mcs) |
| 2168 | return 1; |
| 2169 | |
| 2170 | /* TODO: consider rx_highest */ |
| 2171 | |
| 2172 | if (mcs->rx_mask[3]) |
| 2173 | return 4; |
| 2174 | if (mcs->rx_mask[2]) |
| 2175 | return 3; |
| 2176 | if (mcs->rx_mask[1]) |
| 2177 | return 2; |
| 2178 | return 1; |
| 2179 | } |
Thomas Pedersen | f4bda33 | 2012-11-13 10:46:27 -0800 | [diff] [blame] | 2180 | |
| 2181 | /** |
| 2182 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame |
| 2183 | * @local: mac80211 hw info struct |
| 2184 | * @status: RX status |
| 2185 | * @mpdu_len: total MPDU length (including FCS) |
| 2186 | * @mpdu_offset: offset into MPDU to calculate timestamp at |
| 2187 | * |
| 2188 | * This function calculates the RX timestamp at the given MPDU offset, taking |
| 2189 | * into account what the RX timestamp was. An offset of 0 will just normalize |
| 2190 | * the timestamp to TSF at beginning of MPDU reception. |
| 2191 | */ |
| 2192 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, |
| 2193 | struct ieee80211_rx_status *status, |
| 2194 | unsigned int mpdu_len, |
| 2195 | unsigned int mpdu_offset) |
| 2196 | { |
| 2197 | u64 ts = status->mactime; |
| 2198 | struct rate_info ri; |
| 2199 | u16 rate; |
| 2200 | |
| 2201 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) |
| 2202 | return 0; |
| 2203 | |
| 2204 | memset(&ri, 0, sizeof(ri)); |
| 2205 | |
| 2206 | /* Fill cfg80211 rate info */ |
| 2207 | if (status->flag & RX_FLAG_HT) { |
| 2208 | ri.mcs = status->rate_idx; |
| 2209 | ri.flags |= RATE_INFO_FLAGS_MCS; |
| 2210 | if (status->flag & RX_FLAG_40MHZ) |
| 2211 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; |
| 2212 | if (status->flag & RX_FLAG_SHORT_GI) |
| 2213 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; |
Johannes Berg | 5614618 | 2012-11-09 15:07:02 +0100 | [diff] [blame] | 2214 | } else if (status->flag & RX_FLAG_VHT) { |
| 2215 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; |
| 2216 | ri.mcs = status->rate_idx; |
| 2217 | ri.nss = status->vht_nss; |
| 2218 | if (status->flag & RX_FLAG_40MHZ) |
| 2219 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; |
| 2220 | if (status->flag & RX_FLAG_80MHZ) |
| 2221 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; |
| 2222 | if (status->flag & RX_FLAG_80P80MHZ) |
| 2223 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; |
| 2224 | if (status->flag & RX_FLAG_160MHZ) |
| 2225 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; |
| 2226 | if (status->flag & RX_FLAG_SHORT_GI) |
| 2227 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; |
Thomas Pedersen | f4bda33 | 2012-11-13 10:46:27 -0800 | [diff] [blame] | 2228 | } else { |
| 2229 | struct ieee80211_supported_band *sband; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2230 | int shift = 0; |
| 2231 | int bitrate; |
| 2232 | |
| 2233 | if (status->flag & RX_FLAG_10MHZ) |
| 2234 | shift = 1; |
| 2235 | if (status->flag & RX_FLAG_5MHZ) |
| 2236 | shift = 2; |
Thomas Pedersen | f4bda33 | 2012-11-13 10:46:27 -0800 | [diff] [blame] | 2237 | |
| 2238 | sband = local->hw.wiphy->bands[status->band]; |
Simon Wunderlich | 2103dec | 2013-07-08 16:55:53 +0200 | [diff] [blame] | 2239 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
| 2240 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); |
Thomas Pedersen | f4bda33 | 2012-11-13 10:46:27 -0800 | [diff] [blame] | 2241 | } |
| 2242 | |
| 2243 | rate = cfg80211_calculate_bitrate(&ri); |
| 2244 | |
| 2245 | /* rewind from end of MPDU */ |
| 2246 | if (status->flag & RX_FLAG_MACTIME_END) |
| 2247 | ts -= mpdu_len * 8 * 10 / rate; |
| 2248 | |
| 2249 | ts += mpdu_offset * 8 * 10 / rate; |
| 2250 | |
| 2251 | return ts; |
| 2252 | } |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 2253 | |
| 2254 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) |
| 2255 | { |
| 2256 | struct ieee80211_sub_if_data *sdata; |
| 2257 | |
| 2258 | mutex_lock(&local->iflist_mtx); |
| 2259 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 2260 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
| 2261 | |
| 2262 | if (sdata->wdev.cac_started) { |
| 2263 | ieee80211_vif_release_channel(sdata); |
| 2264 | cfg80211_cac_event(sdata->dev, |
| 2265 | NL80211_RADAR_CAC_ABORTED, |
| 2266 | GFP_KERNEL); |
| 2267 | } |
| 2268 | } |
| 2269 | mutex_unlock(&local->iflist_mtx); |
| 2270 | } |
| 2271 | |
| 2272 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) |
| 2273 | { |
| 2274 | struct ieee80211_local *local = |
| 2275 | container_of(work, struct ieee80211_local, radar_detected_work); |
| 2276 | struct cfg80211_chan_def chandef; |
| 2277 | |
| 2278 | ieee80211_dfs_cac_cancel(local); |
| 2279 | |
| 2280 | if (local->use_chanctx) |
| 2281 | /* currently not handled */ |
| 2282 | WARN_ON(1); |
| 2283 | else { |
Karl Beldan | 675a0b0 | 2013-03-25 16:26:57 +0100 | [diff] [blame] | 2284 | chandef = local->hw.conf.chandef; |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 2285 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
| 2286 | } |
| 2287 | } |
| 2288 | |
| 2289 | void ieee80211_radar_detected(struct ieee80211_hw *hw) |
| 2290 | { |
| 2291 | struct ieee80211_local *local = hw_to_local(hw); |
| 2292 | |
| 2293 | trace_api_radar_detected(local); |
| 2294 | |
| 2295 | ieee80211_queue_work(hw, &local->radar_detected_work); |
| 2296 | } |
| 2297 | EXPORT_SYMBOL(ieee80211_radar_detected); |