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, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 110 | int rate, int erp, int short_preamble) |
| 111 | { |
| 112 | int dur; |
| 113 | |
| 114 | /* calculate duration (in microseconds, rounded up to next higher |
| 115 | * integer if it includes a fractional microsecond) to send frame of |
| 116 | * len bytes (does not include FCS) at the given rate. Duration will |
| 117 | * also include SIFS. |
| 118 | * |
| 119 | * rate is in 100 kbps, so divident is multiplied by 10 in the |
| 120 | * DIV_ROUND_UP() operations. |
| 121 | */ |
| 122 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 123 | if (band == IEEE80211_BAND_5GHZ || erp) { |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 124 | /* |
| 125 | * OFDM: |
| 126 | * |
| 127 | * N_DBPS = DATARATE x 4 |
| 128 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) |
| 129 | * (16 = SIGNAL time, 6 = tail bits) |
| 130 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext |
| 131 | * |
| 132 | * T_SYM = 4 usec |
| 133 | * 802.11a - 17.5.2: aSIFSTime = 16 usec |
| 134 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
| 135 | * signal ext = 6 usec |
| 136 | */ |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 137 | dur = 16; /* SIFS + signal ext */ |
| 138 | dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */ |
| 139 | dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */ |
| 140 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, |
| 141 | 4 * rate); /* T_SYM x N_SYM */ |
| 142 | } else { |
| 143 | /* |
| 144 | * 802.11b or 802.11g with 802.11b compatibility: |
| 145 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + |
| 146 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. |
| 147 | * |
| 148 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 |
| 149 | * aSIFSTime = 10 usec |
| 150 | * aPreambleLength = 144 usec or 72 usec with short preamble |
| 151 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble |
| 152 | */ |
| 153 | dur = 10; /* aSIFSTime = 10 usec */ |
| 154 | dur += short_preamble ? (72 + 24) : (144 + 48); |
| 155 | |
| 156 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); |
| 157 | } |
| 158 | |
| 159 | return dur; |
| 160 | } |
| 161 | |
| 162 | /* Exported duration function for driver use */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 163 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 164 | struct ieee80211_vif *vif, |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 165 | enum ieee80211_band band, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 166 | size_t frame_len, |
| 167 | struct ieee80211_rate *rate) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 168 | { |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 169 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 170 | u16 dur; |
| 171 | int erp; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 172 | bool short_preamble = false; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 173 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 174 | erp = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 175 | if (vif) { |
| 176 | sdata = vif_to_sdata(vif); |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 177 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 178 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
| 179 | erp = rate->flags & IEEE80211_RATE_ERP_G; |
| 180 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 181 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 182 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 183 | short_preamble); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 184 | |
| 185 | return cpu_to_le16(dur); |
| 186 | } |
| 187 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); |
| 188 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 189 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 190 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 191 | const struct ieee80211_tx_info *frame_txctl) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 192 | { |
| 193 | struct ieee80211_local *local = hw_to_local(hw); |
| 194 | struct ieee80211_rate *rate; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 195 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 196 | bool short_preamble; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 197 | int erp; |
| 198 | u16 dur; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 199 | struct ieee80211_supported_band *sband; |
| 200 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 201 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 202 | |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 203 | short_preamble = false; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 204 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 205 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 206 | |
| 207 | erp = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 208 | if (vif) { |
| 209 | sdata = vif_to_sdata(vif); |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 210 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 211 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
| 212 | erp = rate->flags & IEEE80211_RATE_ERP_G; |
| 213 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 214 | |
| 215 | /* CTS duration */ |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 216 | dur = ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 217 | erp, short_preamble); |
| 218 | /* Data frame duration */ |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 219 | dur += ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 220 | erp, short_preamble); |
| 221 | /* ACK duration */ |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 222 | dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 223 | erp, short_preamble); |
| 224 | |
| 225 | return cpu_to_le16(dur); |
| 226 | } |
| 227 | EXPORT_SYMBOL(ieee80211_rts_duration); |
| 228 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 229 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 230 | struct ieee80211_vif *vif, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 231 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 232 | const struct ieee80211_tx_info *frame_txctl) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 233 | { |
| 234 | struct ieee80211_local *local = hw_to_local(hw); |
| 235 | struct ieee80211_rate *rate; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 236 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 237 | bool short_preamble; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 238 | int erp; |
| 239 | u16 dur; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 240 | struct ieee80211_supported_band *sband; |
| 241 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 242 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 243 | |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 244 | short_preamble = false; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 245 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 246 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 247 | erp = 0; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 248 | if (vif) { |
| 249 | sdata = vif_to_sdata(vif); |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 250 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 251 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
| 252 | erp = rate->flags & IEEE80211_RATE_ERP_G; |
| 253 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 254 | |
| 255 | /* Data frame duration */ |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 256 | dur = ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 257 | erp, short_preamble); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 258 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 259 | /* ACK duration */ |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 260 | dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 261 | erp, short_preamble); |
| 262 | } |
| 263 | |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 264 | return cpu_to_le16(dur); |
| 265 | } |
| 266 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); |
| 267 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 268 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
| 269 | { |
| 270 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame^] | 271 | int n_acs = IEEE80211_NUM_ACS; |
| 272 | |
| 273 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 274 | n_acs = 1; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 275 | |
| 276 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| 277 | int ac; |
| 278 | |
| 279 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
| 280 | continue; |
| 281 | |
| 282 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
| 283 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) |
| 284 | continue; |
| 285 | |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame^] | 286 | for (ac = 0; ac < n_acs; ac++) { |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 287 | int ac_queue = sdata->vif.hw_queue[ac]; |
| 288 | |
| 289 | if (ac_queue == queue || |
| 290 | (sdata->vif.cab_queue == queue && |
| 291 | local->queue_stop_reasons[ac_queue] == 0 && |
| 292 | skb_queue_empty(&local->pending[ac_queue]))) |
| 293 | netif_wake_subqueue(sdata->dev, ac); |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 298 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
| 299 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 300 | { |
| 301 | struct ieee80211_local *local = hw_to_local(hw); |
| 302 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 303 | trace_wake_queue(local, queue, reason); |
| 304 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 305 | if (WARN_ON(queue >= hw->queues)) |
| 306 | return; |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 307 | |
Johannes Berg | ada1512 | 2012-03-28 11:04:27 +0200 | [diff] [blame] | 308 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
| 309 | return; |
| 310 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 311 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
| 312 | |
| 313 | if (local->queue_stop_reasons[queue] != 0) |
| 314 | /* someone still has this queue stopped */ |
| 315 | return; |
| 316 | |
Johannes Berg | 7236fe2 | 2010-03-22 13:42:43 -0700 | [diff] [blame] | 317 | if (skb_queue_empty(&local->pending[queue])) { |
| 318 | rcu_read_lock(); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 319 | ieee80211_propagate_queue_wake(local, queue); |
Johannes Berg | 7236fe2 | 2010-03-22 13:42:43 -0700 | [diff] [blame] | 320 | rcu_read_unlock(); |
| 321 | } else |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 322 | tasklet_schedule(&local->tx_pending_tasklet); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 323 | } |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 324 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 325 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
| 326 | enum queue_stop_reason reason) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 327 | { |
| 328 | struct ieee80211_local *local = hw_to_local(hw); |
| 329 | unsigned long flags; |
| 330 | |
| 331 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 332 | __ieee80211_wake_queue(hw, queue, reason); |
| 333 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 334 | } |
| 335 | |
| 336 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) |
| 337 | { |
| 338 | ieee80211_wake_queue_by_reason(hw, queue, |
| 339 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
| 340 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 341 | EXPORT_SYMBOL(ieee80211_wake_queue); |
| 342 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 343 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
| 344 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 345 | { |
| 346 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 347 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame^] | 348 | int n_acs = IEEE80211_NUM_ACS; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 349 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 350 | trace_stop_queue(local, queue, reason); |
| 351 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 352 | if (WARN_ON(queue >= hw->queues)) |
| 353 | return; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 354 | |
Johannes Berg | ada1512 | 2012-03-28 11:04:27 +0200 | [diff] [blame] | 355 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
| 356 | return; |
| 357 | |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 358 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 359 | |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame^] | 360 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 361 | n_acs = 1; |
| 362 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 363 | rcu_read_lock(); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 364 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| 365 | int ac; |
| 366 | |
Johannes Berg | a6f38ac | 2012-07-04 12:49:59 +0200 | [diff] [blame^] | 367 | for (ac = 0; ac < n_acs; ac++) { |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 368 | if (sdata->vif.hw_queue[ac] == queue || |
| 369 | sdata->vif.cab_queue == queue) |
| 370 | netif_stop_subqueue(sdata->dev, ac); |
| 371 | } |
| 372 | } |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 373 | rcu_read_unlock(); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 374 | } |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 375 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 376 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
| 377 | enum queue_stop_reason reason) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 378 | { |
| 379 | struct ieee80211_local *local = hw_to_local(hw); |
| 380 | unsigned long flags; |
| 381 | |
| 382 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 383 | __ieee80211_stop_queue(hw, queue, reason); |
| 384 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 385 | } |
| 386 | |
| 387 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) |
| 388 | { |
| 389 | ieee80211_stop_queue_by_reason(hw, queue, |
| 390 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
| 391 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 392 | EXPORT_SYMBOL(ieee80211_stop_queue); |
| 393 | |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 394 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
| 395 | struct sk_buff *skb) |
| 396 | { |
| 397 | struct ieee80211_hw *hw = &local->hw; |
| 398 | unsigned long flags; |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 399 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 400 | int queue = info->hw_queue; |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 401 | |
| 402 | if (WARN_ON(!info->control.vif)) { |
Roel Kluin | 0819663 | 2009-10-06 15:52:35 +0200 | [diff] [blame] | 403 | kfree_skb(skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 404 | return; |
| 405 | } |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 406 | |
| 407 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 408 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 409 | __skb_queue_tail(&local->pending[queue], skb); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 410 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
| 411 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 412 | } |
| 413 | |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 414 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
| 415 | struct sk_buff_head *skbs, |
| 416 | void (*fn)(void *data), void *data) |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 417 | { |
| 418 | struct ieee80211_hw *hw = &local->hw; |
| 419 | struct sk_buff *skb; |
| 420 | unsigned long flags; |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 421 | int queue, i; |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 422 | |
| 423 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 424 | while ((skb = skb_dequeue(skbs))) { |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 425 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 426 | |
| 427 | if (WARN_ON(!info->control.vif)) { |
Roel Kluin | 0819663 | 2009-10-06 15:52:35 +0200 | [diff] [blame] | 428 | kfree_skb(skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 429 | continue; |
| 430 | } |
| 431 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 432 | queue = info->hw_queue; |
Johannes Berg | 4644ae8 | 2012-03-28 11:04:28 +0200 | [diff] [blame] | 433 | |
| 434 | __ieee80211_stop_queue(hw, queue, |
| 435 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
| 436 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 437 | __skb_queue_tail(&local->pending[queue], skb); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 438 | } |
| 439 | |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 440 | if (fn) |
| 441 | fn(data); |
| 442 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 443 | for (i = 0; i < hw->queues; i++) |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 444 | __ieee80211_wake_queue(hw, i, |
| 445 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 446 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 447 | } |
| 448 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 449 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
| 450 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 451 | { |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 452 | struct ieee80211_local *local = hw_to_local(hw); |
| 453 | unsigned long flags; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 454 | int i; |
| 455 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 456 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 457 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 458 | for (i = 0; i < hw->queues; i++) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 459 | __ieee80211_stop_queue(hw, i, reason); |
| 460 | |
| 461 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 462 | } |
| 463 | |
| 464 | void ieee80211_stop_queues(struct ieee80211_hw *hw) |
| 465 | { |
| 466 | ieee80211_stop_queues_by_reason(hw, |
| 467 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 468 | } |
| 469 | EXPORT_SYMBOL(ieee80211_stop_queues); |
| 470 | |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 471 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
| 472 | { |
| 473 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 474 | unsigned long flags; |
| 475 | int ret; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 476 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 477 | if (WARN_ON(queue >= hw->queues)) |
| 478 | return true; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 479 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 480 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 481 | ret = !!local->queue_stop_reasons[queue]; |
| 482 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 483 | return ret; |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 484 | } |
| 485 | EXPORT_SYMBOL(ieee80211_queue_stopped); |
| 486 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 487 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
| 488 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 489 | { |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 490 | struct ieee80211_local *local = hw_to_local(hw); |
| 491 | unsigned long flags; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 492 | int i; |
| 493 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 494 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 495 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 496 | for (i = 0; i < hw->queues; i++) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 497 | __ieee80211_wake_queue(hw, i, reason); |
| 498 | |
| 499 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 500 | } |
| 501 | |
| 502 | void ieee80211_wake_queues(struct ieee80211_hw *hw) |
| 503 | { |
| 504 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 505 | } |
| 506 | EXPORT_SYMBOL(ieee80211_wake_queues); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 507 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 508 | void ieee80211_iterate_active_interfaces( |
| 509 | struct ieee80211_hw *hw, |
| 510 | void (*iterator)(void *data, u8 *mac, |
| 511 | struct ieee80211_vif *vif), |
| 512 | void *data) |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 513 | { |
| 514 | struct ieee80211_local *local = hw_to_local(hw); |
| 515 | struct ieee80211_sub_if_data *sdata; |
| 516 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 517 | mutex_lock(&local->iflist_mtx); |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 518 | |
| 519 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 520 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 521 | case NL80211_IFTYPE_MONITOR: |
| 522 | case NL80211_IFTYPE_AP_VLAN: |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 523 | continue; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 524 | default: |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 525 | break; |
| 526 | } |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 527 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 528 | iterator(data, sdata->vif.addr, |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 529 | &sdata->vif); |
| 530 | } |
| 531 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 532 | mutex_unlock(&local->iflist_mtx); |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 533 | } |
| 534 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); |
| 535 | |
| 536 | void ieee80211_iterate_active_interfaces_atomic( |
| 537 | struct ieee80211_hw *hw, |
| 538 | void (*iterator)(void *data, u8 *mac, |
| 539 | struct ieee80211_vif *vif), |
| 540 | void *data) |
| 541 | { |
| 542 | struct ieee80211_local *local = hw_to_local(hw); |
| 543 | struct ieee80211_sub_if_data *sdata; |
| 544 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 545 | rcu_read_lock(); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 546 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 547 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 548 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 549 | case NL80211_IFTYPE_MONITOR: |
| 550 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 551 | continue; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 552 | default: |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 553 | break; |
| 554 | } |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 555 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 556 | iterator(data, sdata->vif.addr, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 557 | &sdata->vif); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 558 | } |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 559 | |
| 560 | rcu_read_unlock(); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 561 | } |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 562 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
Johannes Berg | 37ffc8d | 2008-09-08 16:40:36 +0200 | [diff] [blame] | 563 | |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 564 | /* |
| 565 | * Nothing should have been stuffed into the workqueue during |
| 566 | * the suspend->resume cycle. If this WARN is seen then there |
| 567 | * is a bug with either the driver suspend or something in |
| 568 | * mac80211 stuffing into the workqueue which we haven't yet |
| 569 | * cleared during mac80211's suspend cycle. |
| 570 | */ |
| 571 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) |
| 572 | { |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 573 | if (WARN(local->suspended && !local->resuming, |
| 574 | "queueing ieee80211 work while going to suspend\n")) |
| 575 | return false; |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 576 | |
| 577 | return true; |
| 578 | } |
| 579 | |
| 580 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) |
| 581 | { |
| 582 | struct ieee80211_local *local = hw_to_local(hw); |
| 583 | |
| 584 | if (!ieee80211_can_queue_work(local)) |
| 585 | return; |
| 586 | |
| 587 | queue_work(local->workqueue, work); |
| 588 | } |
| 589 | EXPORT_SYMBOL(ieee80211_queue_work); |
| 590 | |
| 591 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
| 592 | struct delayed_work *dwork, |
| 593 | unsigned long delay) |
| 594 | { |
| 595 | struct ieee80211_local *local = hw_to_local(hw); |
| 596 | |
| 597 | if (!ieee80211_can_queue_work(local)) |
| 598 | return; |
| 599 | |
| 600 | queue_delayed_work(local->workqueue, dwork, delay); |
| 601 | } |
| 602 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); |
| 603 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 604 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, |
| 605 | struct ieee802_11_elems *elems, |
| 606 | u64 filter, u32 crc) |
| 607 | { |
| 608 | size_t left = len; |
| 609 | u8 *pos = start; |
| 610 | bool calc_crc = filter != 0; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 611 | DECLARE_BITMAP(seen_elems, 256); |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 612 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 613 | bitmap_zero(seen_elems, 256); |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 614 | memset(elems, 0, sizeof(*elems)); |
| 615 | elems->ie_start = start; |
| 616 | elems->total_len = len; |
| 617 | |
| 618 | while (left >= 2) { |
| 619 | u8 id, elen; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 620 | bool elem_parse_failed; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 621 | |
| 622 | id = *pos++; |
| 623 | elen = *pos++; |
| 624 | left -= 2; |
| 625 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 626 | if (elen > left) { |
| 627 | elems->parse_error = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 628 | break; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | if (id != WLAN_EID_VENDOR_SPECIFIC && |
| 632 | id != WLAN_EID_QUIET && |
| 633 | test_bit(id, seen_elems)) { |
| 634 | elems->parse_error = true; |
| 635 | left -= elen; |
| 636 | pos += elen; |
| 637 | continue; |
| 638 | } |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 639 | |
| 640 | if (calc_crc && id < 64 && (filter & (1ULL << id))) |
| 641 | crc = crc32_be(crc, pos - 2, elen + 2); |
| 642 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 643 | elem_parse_failed = false; |
| 644 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 645 | switch (id) { |
| 646 | case WLAN_EID_SSID: |
| 647 | elems->ssid = pos; |
| 648 | elems->ssid_len = elen; |
| 649 | break; |
| 650 | case WLAN_EID_SUPP_RATES: |
| 651 | elems->supp_rates = pos; |
| 652 | elems->supp_rates_len = elen; |
| 653 | break; |
| 654 | case WLAN_EID_FH_PARAMS: |
| 655 | elems->fh_params = pos; |
| 656 | elems->fh_params_len = elen; |
| 657 | break; |
| 658 | case WLAN_EID_DS_PARAMS: |
| 659 | elems->ds_params = pos; |
| 660 | elems->ds_params_len = elen; |
| 661 | break; |
| 662 | case WLAN_EID_CF_PARAMS: |
| 663 | elems->cf_params = pos; |
| 664 | elems->cf_params_len = elen; |
| 665 | break; |
| 666 | case WLAN_EID_TIM: |
| 667 | if (elen >= sizeof(struct ieee80211_tim_ie)) { |
| 668 | elems->tim = (void *)pos; |
| 669 | elems->tim_len = elen; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 670 | } else |
| 671 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 672 | break; |
| 673 | case WLAN_EID_IBSS_PARAMS: |
| 674 | elems->ibss_params = pos; |
| 675 | elems->ibss_params_len = elen; |
| 676 | break; |
| 677 | case WLAN_EID_CHALLENGE: |
| 678 | elems->challenge = pos; |
| 679 | elems->challenge_len = elen; |
| 680 | break; |
| 681 | case WLAN_EID_VENDOR_SPECIFIC: |
| 682 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
| 683 | pos[2] == 0xf2) { |
| 684 | /* Microsoft OUI (00:50:F2) */ |
| 685 | |
| 686 | if (calc_crc) |
| 687 | crc = crc32_be(crc, pos - 2, elen + 2); |
| 688 | |
| 689 | if (pos[3] == 1) { |
| 690 | /* OUI Type 1 - WPA IE */ |
| 691 | elems->wpa = pos; |
| 692 | elems->wpa_len = elen; |
| 693 | } else if (elen >= 5 && pos[3] == 2) { |
| 694 | /* OUI Type 2 - WMM IE */ |
| 695 | if (pos[4] == 0) { |
| 696 | elems->wmm_info = pos; |
| 697 | elems->wmm_info_len = elen; |
| 698 | } else if (pos[4] == 1) { |
| 699 | elems->wmm_param = pos; |
| 700 | elems->wmm_param_len = elen; |
| 701 | } |
| 702 | } |
| 703 | } |
| 704 | break; |
| 705 | case WLAN_EID_RSN: |
| 706 | elems->rsn = pos; |
| 707 | elems->rsn_len = elen; |
| 708 | break; |
| 709 | case WLAN_EID_ERP_INFO: |
| 710 | elems->erp_info = pos; |
| 711 | elems->erp_info_len = elen; |
| 712 | break; |
| 713 | case WLAN_EID_EXT_SUPP_RATES: |
| 714 | elems->ext_supp_rates = pos; |
| 715 | elems->ext_supp_rates_len = elen; |
| 716 | break; |
| 717 | case WLAN_EID_HT_CAPABILITY: |
| 718 | if (elen >= sizeof(struct ieee80211_ht_cap)) |
| 719 | elems->ht_cap_elem = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 720 | else |
| 721 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 722 | break; |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 723 | case WLAN_EID_HT_OPERATION: |
| 724 | if (elen >= sizeof(struct ieee80211_ht_operation)) |
| 725 | elems->ht_operation = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 726 | else |
| 727 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 728 | break; |
| 729 | case WLAN_EID_MESH_ID: |
| 730 | elems->mesh_id = pos; |
| 731 | elems->mesh_id_len = elen; |
| 732 | break; |
| 733 | case WLAN_EID_MESH_CONFIG: |
| 734 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) |
| 735 | elems->mesh_config = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 736 | else |
| 737 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 738 | break; |
| 739 | case WLAN_EID_PEER_MGMT: |
| 740 | elems->peering = pos; |
| 741 | elems->peering_len = elen; |
| 742 | break; |
| 743 | case WLAN_EID_PREQ: |
| 744 | elems->preq = pos; |
| 745 | elems->preq_len = elen; |
| 746 | break; |
| 747 | case WLAN_EID_PREP: |
| 748 | elems->prep = pos; |
| 749 | elems->prep_len = elen; |
| 750 | break; |
| 751 | case WLAN_EID_PERR: |
| 752 | elems->perr = pos; |
| 753 | elems->perr_len = elen; |
| 754 | break; |
| 755 | case WLAN_EID_RANN: |
| 756 | if (elen >= sizeof(struct ieee80211_rann_ie)) |
| 757 | elems->rann = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 758 | else |
| 759 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 760 | break; |
| 761 | case WLAN_EID_CHANNEL_SWITCH: |
| 762 | elems->ch_switch_elem = pos; |
| 763 | elems->ch_switch_elem_len = elen; |
| 764 | break; |
| 765 | case WLAN_EID_QUIET: |
| 766 | if (!elems->quiet_elem) { |
| 767 | elems->quiet_elem = pos; |
| 768 | elems->quiet_elem_len = elen; |
| 769 | } |
| 770 | elems->num_of_quiet_elem++; |
| 771 | break; |
| 772 | case WLAN_EID_COUNTRY: |
| 773 | elems->country_elem = pos; |
| 774 | elems->country_elem_len = elen; |
| 775 | break; |
| 776 | case WLAN_EID_PWR_CONSTRAINT: |
| 777 | elems->pwr_constr_elem = pos; |
| 778 | elems->pwr_constr_elem_len = elen; |
| 779 | break; |
| 780 | case WLAN_EID_TIMEOUT_INTERVAL: |
| 781 | elems->timeout_int = pos; |
| 782 | elems->timeout_int_len = elen; |
| 783 | break; |
| 784 | default: |
| 785 | break; |
| 786 | } |
| 787 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 788 | if (elem_parse_failed) |
| 789 | elems->parse_error = true; |
| 790 | else |
| 791 | set_bit(id, seen_elems); |
| 792 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 793 | left -= elen; |
| 794 | pos += elen; |
| 795 | } |
| 796 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 797 | if (left != 0) |
| 798 | elems->parse_error = true; |
| 799 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 800 | return crc; |
| 801 | } |
| 802 | |
Johannes Berg | 37ffc8d | 2008-09-08 16:40:36 +0200 | [diff] [blame] | 803 | void ieee802_11_parse_elems(u8 *start, size_t len, |
| 804 | struct ieee802_11_elems *elems) |
| 805 | { |
Johannes Berg | d91f36d | 2009-04-16 13:17:26 +0200 | [diff] [blame] | 806 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); |
| 807 | } |
| 808 | |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 809 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
| 810 | bool bss_notify) |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 811 | { |
| 812 | struct ieee80211_local *local = sdata->local; |
| 813 | struct ieee80211_tx_queue_params qparam; |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 814 | int ac; |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 815 | bool use_11b, enable_qos; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 816 | int aCWmin, aCWmax; |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 817 | |
| 818 | if (!local->ops->conf_tx) |
| 819 | return; |
| 820 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 821 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 822 | return; |
| 823 | |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 824 | memset(&qparam, 0, sizeof(qparam)); |
| 825 | |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 826 | use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) && |
| 827 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 828 | |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 829 | /* |
| 830 | * By default disable QoS in STA mode for old access points, which do |
| 831 | * not support 802.11e. New APs will provide proper queue parameters, |
| 832 | * that we will configure later. |
| 833 | */ |
| 834 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); |
| 835 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 836 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 837 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
| 838 | aCWmax = 1023; |
| 839 | if (use_11b) |
| 840 | aCWmin = 31; |
| 841 | else |
| 842 | aCWmin = 15; |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 843 | |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 844 | if (enable_qos) { |
| 845 | switch (ac) { |
| 846 | case IEEE80211_AC_BK: |
| 847 | qparam.cw_max = aCWmax; |
| 848 | qparam.cw_min = aCWmin; |
| 849 | qparam.txop = 0; |
| 850 | qparam.aifs = 7; |
| 851 | break; |
| 852 | /* never happens but let's not leave undefined */ |
| 853 | default: |
| 854 | case IEEE80211_AC_BE: |
| 855 | qparam.cw_max = aCWmax; |
| 856 | qparam.cw_min = aCWmin; |
| 857 | qparam.txop = 0; |
| 858 | qparam.aifs = 3; |
| 859 | break; |
| 860 | case IEEE80211_AC_VI: |
| 861 | qparam.cw_max = aCWmin; |
| 862 | qparam.cw_min = (aCWmin + 1) / 2 - 1; |
| 863 | if (use_11b) |
| 864 | qparam.txop = 6016/32; |
| 865 | else |
| 866 | qparam.txop = 3008/32; |
| 867 | qparam.aifs = 2; |
| 868 | break; |
| 869 | case IEEE80211_AC_VO: |
| 870 | qparam.cw_max = (aCWmin + 1) / 2 - 1; |
| 871 | qparam.cw_min = (aCWmin + 1) / 4 - 1; |
| 872 | if (use_11b) |
| 873 | qparam.txop = 3264/32; |
| 874 | else |
| 875 | qparam.txop = 1504/32; |
| 876 | qparam.aifs = 2; |
| 877 | break; |
| 878 | } |
| 879 | } else { |
| 880 | /* Confiure old 802.11b/g medium access rules. */ |
Johannes Berg | 7ba10a8 | 2009-05-27 09:41:06 +0200 | [diff] [blame] | 881 | qparam.cw_max = aCWmax; |
| 882 | qparam.cw_min = aCWmin; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 883 | qparam.txop = 0; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 884 | qparam.aifs = 2; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 885 | } |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 886 | |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 887 | qparam.uapsd = false; |
| 888 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 889 | sdata->tx_conf[ac] = qparam; |
| 890 | drv_conf_tx(local, sdata, ac, &qparam); |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 891 | } |
Stanislaw Gruszka | e1b3ec1 | 2010-03-29 12:18:34 +0200 | [diff] [blame] | 892 | |
Sujith | d973497 | 2010-07-23 10:47:11 +0530 | [diff] [blame] | 893 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR) { |
Stanislaw Gruszka | a8ce854 | 2012-05-30 10:56:46 +0200 | [diff] [blame] | 894 | sdata->vif.bss_conf.qos = enable_qos; |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 895 | if (bss_notify) |
| 896 | ieee80211_bss_info_change_notify(sdata, |
| 897 | BSS_CHANGED_QOS); |
Sujith | d973497 | 2010-07-23 10:47:11 +0530 | [diff] [blame] | 898 | } |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 899 | } |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 900 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 901 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
| 902 | const size_t supp_rates_len, |
| 903 | const u8 *supp_rates) |
| 904 | { |
| 905 | struct ieee80211_local *local = sdata->local; |
| 906 | int i, have_higher_than_11mbit = 0; |
| 907 | |
| 908 | /* cf. IEEE 802.11 9.2.12 */ |
| 909 | for (i = 0; i < supp_rates_len; i++) |
| 910 | if ((supp_rates[i] & 0x7f) * 5 > 110) |
| 911 | have_higher_than_11mbit = 1; |
| 912 | |
| 913 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 914 | have_higher_than_11mbit) |
| 915 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 916 | else |
| 917 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
| 918 | |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 919 | ieee80211_set_wmm_default(sdata, true); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 920 | } |
| 921 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 922 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 923 | enum ieee80211_band band) |
| 924 | { |
| 925 | struct ieee80211_supported_band *sband; |
| 926 | struct ieee80211_rate *bitrates; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 927 | u32 mandatory_rates; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 928 | enum ieee80211_rate_flags mandatory_flag; |
| 929 | int i; |
| 930 | |
| 931 | sband = local->hw.wiphy->bands[band]; |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 932 | if (WARN_ON(!sband)) |
| 933 | return 1; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 934 | |
| 935 | if (band == IEEE80211_BAND_2GHZ) |
| 936 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; |
| 937 | else |
| 938 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; |
| 939 | |
| 940 | bitrates = sband->bitrates; |
| 941 | mandatory_rates = 0; |
| 942 | for (i = 0; i < sband->n_bitrates; i++) |
| 943 | if (bitrates[i].flags & mandatory_flag) |
| 944 | mandatory_rates |= BIT(i); |
| 945 | return mandatory_rates; |
| 946 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 947 | |
| 948 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
| 949 | u16 transaction, u16 auth_alg, |
Antonio Quartulli | efa6a09 | 2012-01-09 19:43:06 +0100 | [diff] [blame] | 950 | u8 *extra, size_t extra_len, const u8 *da, |
| 951 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 952 | { |
| 953 | struct ieee80211_local *local = sdata->local; |
| 954 | struct sk_buff *skb; |
| 955 | struct ieee80211_mgmt *mgmt; |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 956 | int err; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 957 | |
| 958 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
Jouni Malinen | 65fc73a | 2009-03-20 21:21:16 +0200 | [diff] [blame] | 959 | sizeof(*mgmt) + 6 + extra_len); |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 960 | if (!skb) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 961 | return; |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 962 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 963 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 964 | |
| 965 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 966 | memset(mgmt, 0, 24 + 6); |
| 967 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 968 | IEEE80211_STYPE_AUTH); |
Antonio Quartulli | efa6a09 | 2012-01-09 19:43:06 +0100 | [diff] [blame] | 969 | memcpy(mgmt->da, da, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 970 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 971 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
| 972 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); |
| 973 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
| 974 | mgmt->u.auth.status_code = cpu_to_le16(0); |
| 975 | if (extra) |
| 976 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 977 | |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 978 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
| 979 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 980 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); |
| 981 | WARN_ON(err); |
| 982 | } |
| 983 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 984 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
| 985 | ieee80211_tx_skb(sdata, skb); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 986 | } |
| 987 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 988 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
Johannes Berg | 4d36ec5 | 2009-10-27 20:59:55 +0100 | [diff] [blame] | 989 | const u8 *ie, size_t ie_len, |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 990 | enum ieee80211_band band, u32 rate_mask, |
| 991 | u8 channel) |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 992 | { |
| 993 | struct ieee80211_supported_band *sband; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 994 | u8 *pos; |
| 995 | size_t offset = 0, noffset; |
| 996 | int supp_rates_len, i; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 997 | u8 rates[32]; |
| 998 | int num_rates; |
| 999 | int ext_rates_len; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1000 | |
Johannes Berg | 4d36ec5 | 2009-10-27 20:59:55 +0100 | [diff] [blame] | 1001 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1002 | |
| 1003 | pos = buffer; |
| 1004 | |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1005 | num_rates = 0; |
| 1006 | for (i = 0; i < sband->n_bitrates; i++) { |
| 1007 | if ((BIT(i) & rate_mask) == 0) |
| 1008 | continue; /* skip rate */ |
| 1009 | rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5); |
| 1010 | } |
| 1011 | |
| 1012 | supp_rates_len = min_t(int, num_rates, 8); |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1013 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1014 | *pos++ = WLAN_EID_SUPP_RATES; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1015 | *pos++ = supp_rates_len; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1016 | memcpy(pos, rates, supp_rates_len); |
| 1017 | pos += supp_rates_len; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1018 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1019 | /* insert "request information" if in custom IEs */ |
| 1020 | if (ie && ie_len) { |
| 1021 | static const u8 before_extrates[] = { |
| 1022 | WLAN_EID_SSID, |
| 1023 | WLAN_EID_SUPP_RATES, |
| 1024 | WLAN_EID_REQUEST, |
| 1025 | }; |
| 1026 | noffset = ieee80211_ie_split(ie, ie_len, |
| 1027 | before_extrates, |
| 1028 | ARRAY_SIZE(before_extrates), |
| 1029 | offset); |
| 1030 | memcpy(pos, ie + offset, noffset - offset); |
| 1031 | pos += noffset - offset; |
| 1032 | offset = noffset; |
| 1033 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1034 | |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1035 | ext_rates_len = num_rates - supp_rates_len; |
| 1036 | if (ext_rates_len > 0) { |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1037 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1038 | *pos++ = ext_rates_len; |
| 1039 | memcpy(pos, rates + supp_rates_len, ext_rates_len); |
| 1040 | pos += ext_rates_len; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1041 | } |
| 1042 | |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1043 | if (channel && sband->band == IEEE80211_BAND_2GHZ) { |
| 1044 | *pos++ = WLAN_EID_DS_PARAMS; |
| 1045 | *pos++ = 1; |
| 1046 | *pos++ = channel; |
| 1047 | } |
| 1048 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1049 | /* insert custom IEs that go before HT */ |
| 1050 | if (ie && ie_len) { |
| 1051 | static const u8 before_ht[] = { |
| 1052 | WLAN_EID_SSID, |
| 1053 | WLAN_EID_SUPP_RATES, |
| 1054 | WLAN_EID_REQUEST, |
| 1055 | WLAN_EID_EXT_SUPP_RATES, |
| 1056 | WLAN_EID_DS_PARAMS, |
| 1057 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
| 1058 | }; |
| 1059 | noffset = ieee80211_ie_split(ie, ie_len, |
| 1060 | before_ht, ARRAY_SIZE(before_ht), |
| 1061 | offset); |
| 1062 | memcpy(pos, ie + offset, noffset - offset); |
| 1063 | pos += noffset - offset; |
| 1064 | offset = noffset; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1065 | } |
| 1066 | |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1067 | if (sband->ht_cap.ht_supported) |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1068 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
| 1069 | sband->ht_cap.cap); |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 1070 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1071 | /* |
| 1072 | * If adding more here, adjust code in main.c |
| 1073 | * that calculates local->scan_ies_len. |
| 1074 | */ |
| 1075 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1076 | /* add any remaining custom IEs */ |
| 1077 | if (ie && ie_len) { |
| 1078 | noffset = ie_len; |
| 1079 | memcpy(pos, ie + offset, noffset - offset); |
| 1080 | pos += noffset - offset; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1081 | } |
| 1082 | |
Mahesh Palivela | ba0afa2 | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1083 | if (sband->vht_cap.vht_supported) |
| 1084 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
| 1085 | sband->vht_cap.cap); |
| 1086 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1087 | return pos - buffer; |
| 1088 | } |
| 1089 | |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1090 | 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] | 1091 | u8 *dst, u32 ratemask, |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1092 | const u8 *ssid, size_t ssid_len, |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1093 | const u8 *ie, size_t ie_len, |
| 1094 | bool directed) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1095 | { |
| 1096 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1097 | struct sk_buff *skb; |
| 1098 | struct ieee80211_mgmt *mgmt; |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1099 | size_t buf_len; |
| 1100 | u8 *buf; |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1101 | u8 chan; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1102 | |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1103 | /* FIXME: come up with a proper value */ |
| 1104 | buf = kmalloc(200 + ie_len, GFP_KERNEL); |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 1105 | if (!buf) |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1106 | return NULL; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1107 | |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1108 | /* |
| 1109 | * Do not send DS Channel parameter for directed probe requests |
| 1110 | * in order to maximize the chance that we get a response. Some |
| 1111 | * badly-behaved APs don't respond when this parameter is included. |
| 1112 | */ |
| 1113 | if (directed) |
| 1114 | chan = 0; |
| 1115 | else |
| 1116 | chan = ieee80211_frequency_to_channel( |
| 1117 | local->hw.conf.channel->center_freq); |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1118 | |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1119 | buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len, |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1120 | local->hw.conf.channel->band, |
Johannes Berg | 85a237f | 2011-07-18 18:08:36 +0200 | [diff] [blame] | 1121 | ratemask, chan); |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1122 | |
| 1123 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
| 1124 | ssid, ssid_len, |
| 1125 | buf, buf_len); |
Johannes Berg | 5b2bbf7 | 2011-11-08 13:04:41 +0100 | [diff] [blame] | 1126 | if (!skb) |
| 1127 | goto out; |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1128 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1129 | if (dst) { |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1130 | mgmt = (struct ieee80211_mgmt *) skb->data; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1131 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 1132 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1133 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1134 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 1135 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
Johannes Berg | 5b2bbf7 | 2011-11-08 13:04:41 +0100 | [diff] [blame] | 1136 | |
| 1137 | out: |
Ming Lei | 145b6d1 | 2010-01-15 21:44:21 +0800 | [diff] [blame] | 1138 | kfree(buf); |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1139 | |
| 1140 | return skb; |
| 1141 | } |
| 1142 | |
| 1143 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
| 1144 | const u8 *ssid, size_t ssid_len, |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1145 | const u8 *ie, size_t ie_len, |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1146 | u32 ratemask, bool directed, bool no_cck) |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1147 | { |
| 1148 | struct sk_buff *skb; |
| 1149 | |
Johannes Berg | 85a237f | 2011-07-18 18:08:36 +0200 | [diff] [blame] | 1150 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, ssid, ssid_len, |
| 1151 | ie, ie_len, directed); |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1152 | if (skb) { |
| 1153 | if (no_cck) |
| 1154 | IEEE80211_SKB_CB(skb)->flags |= |
| 1155 | IEEE80211_TX_CTL_NO_CCK_RATE; |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1156 | ieee80211_tx_skb(sdata, skb); |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1157 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1158 | } |
| 1159 | |
| 1160 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, |
| 1161 | struct ieee802_11_elems *elems, |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1162 | enum ieee80211_band band, u32 *basic_rates) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1163 | { |
| 1164 | struct ieee80211_supported_band *sband; |
| 1165 | struct ieee80211_rate *bitrates; |
| 1166 | size_t num_rates; |
| 1167 | u32 supp_rates; |
| 1168 | int i, j; |
| 1169 | sband = local->hw.wiphy->bands[band]; |
| 1170 | |
Michal Kazior | 4ee73f3 | 2012-04-11 08:47:56 +0200 | [diff] [blame] | 1171 | if (WARN_ON(!sband)) |
| 1172 | return 1; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1173 | |
| 1174 | bitrates = sband->bitrates; |
| 1175 | num_rates = sband->n_bitrates; |
| 1176 | supp_rates = 0; |
| 1177 | for (i = 0; i < elems->supp_rates_len + |
| 1178 | elems->ext_supp_rates_len; i++) { |
| 1179 | u8 rate = 0; |
| 1180 | int own_rate; |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1181 | bool is_basic; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1182 | if (i < elems->supp_rates_len) |
| 1183 | rate = elems->supp_rates[i]; |
| 1184 | else if (elems->ext_supp_rates) |
| 1185 | rate = elems->ext_supp_rates |
| 1186 | [i - elems->supp_rates_len]; |
| 1187 | own_rate = 5 * (rate & 0x7f); |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1188 | is_basic = !!(rate & 0x80); |
| 1189 | |
| 1190 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) |
| 1191 | continue; |
| 1192 | |
| 1193 | for (j = 0; j < num_rates; j++) { |
| 1194 | if (bitrates[j].bitrate == own_rate) { |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1195 | supp_rates |= BIT(j); |
Ashok Nagarajan | 9ebb61a | 2012-04-02 21:21:21 -0700 | [diff] [blame] | 1196 | if (basic_rates && is_basic) |
| 1197 | *basic_rates |= BIT(j); |
| 1198 | } |
| 1199 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1200 | } |
| 1201 | return supp_rates; |
| 1202 | } |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1203 | |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1204 | void ieee80211_stop_device(struct ieee80211_local *local) |
| 1205 | { |
| 1206 | ieee80211_led_radio(local, false); |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 1207 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1208 | |
| 1209 | cancel_work_sync(&local->reconfig_filter); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1210 | |
| 1211 | flush_workqueue(local->workqueue); |
Lennert Buytenhek | 678f415 | 2010-01-10 14:07:53 +0100 | [diff] [blame] | 1212 | drv_stop(local); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1213 | } |
| 1214 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1215 | int ieee80211_reconfig(struct ieee80211_local *local) |
| 1216 | { |
| 1217 | struct ieee80211_hw *hw = &local->hw; |
| 1218 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1219 | struct sta_info *sta; |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1220 | int res, i; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1221 | |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1222 | #ifdef CONFIG_PM |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1223 | if (local->suspended) |
| 1224 | local->resuming = true; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1225 | |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1226 | if (local->wowlan) { |
| 1227 | local->wowlan = false; |
| 1228 | res = drv_resume(local); |
| 1229 | if (res < 0) { |
| 1230 | local->resuming = false; |
| 1231 | return res; |
| 1232 | } |
| 1233 | if (res == 0) |
| 1234 | goto wake_up; |
| 1235 | WARN_ON(res > 1); |
| 1236 | /* |
| 1237 | * res is 1, which means the driver requested |
| 1238 | * to go through a regular reset on wakeup. |
| 1239 | */ |
| 1240 | } |
| 1241 | #endif |
Johannes Berg | 94f9b97 | 2011-07-14 16:48:54 +0200 | [diff] [blame] | 1242 | /* everything else happens only if HW was up & running */ |
| 1243 | if (!local->open_count) |
| 1244 | goto wake_up; |
| 1245 | |
| 1246 | /* |
| 1247 | * Upon resume hardware can sometimes be goofy due to |
| 1248 | * various platform / driver / bus issues, so restarting |
| 1249 | * the device may at times not work immediately. Propagate |
| 1250 | * the error. |
| 1251 | */ |
| 1252 | res = drv_start(local); |
| 1253 | if (res) { |
| 1254 | WARN(local->suspended, "Hardware became unavailable " |
| 1255 | "upon resume. This could be a software issue " |
| 1256 | "prior to suspend or a hardware issue.\n"); |
| 1257 | return res; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1258 | } |
| 1259 | |
Yogesh Ashok Powar | 7f28197 | 2011-12-30 16:34:25 +0530 | [diff] [blame] | 1260 | /* setup fragmentation threshold */ |
| 1261 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); |
| 1262 | |
| 1263 | /* setup RTS threshold */ |
| 1264 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); |
| 1265 | |
| 1266 | /* reset coverage class */ |
| 1267 | drv_set_coverage_class(local, hw->wiphy->coverage_class); |
| 1268 | |
Johannes Berg | 94f9b97 | 2011-07-14 16:48:54 +0200 | [diff] [blame] | 1269 | ieee80211_led_radio(local, true); |
| 1270 | ieee80211_mod_tpt_led_trig(local, |
| 1271 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); |
| 1272 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1273 | /* add interfaces */ |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 1274 | sdata = rtnl_dereference(local->monitor_sdata); |
| 1275 | if (sdata) { |
| 1276 | res = drv_add_interface(local, sdata); |
| 1277 | if (WARN_ON(res)) { |
| 1278 | rcu_assign_pointer(local->monitor_sdata, NULL); |
| 1279 | synchronize_net(); |
| 1280 | kfree(sdata); |
| 1281 | } |
| 1282 | } |
| 1283 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1284 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1285 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
| 1286 | sdata->vif.type != NL80211_IFTYPE_MONITOR && |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1287 | ieee80211_sdata_running(sdata)) |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 1288 | res = drv_add_interface(local, sdata); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1289 | } |
| 1290 | |
| 1291 | /* add STAs back */ |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1292 | mutex_lock(&local->sta_mtx); |
| 1293 | list_for_each_entry(sta, &local->sta_list, list) { |
Arik Nemtsov | 2e8d397 | 2012-06-03 23:31:56 +0300 | [diff] [blame] | 1294 | enum ieee80211_sta_state state; |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1295 | |
Arik Nemtsov | 2e8d397 | 2012-06-03 23:31:56 +0300 | [diff] [blame] | 1296 | if (!sta->uploaded) |
| 1297 | continue; |
| 1298 | |
| 1299 | /* AP-mode stations will be added later */ |
| 1300 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) |
| 1301 | continue; |
| 1302 | |
| 1303 | for (state = IEEE80211_STA_NOTEXIST; |
| 1304 | state < sta->sta_state; state++) |
| 1305 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, |
| 1306 | state + 1)); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1307 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1308 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1309 | |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1310 | /* reconfigure tx conf */ |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 1311 | if (hw->queues >= IEEE80211_NUM_ACS) { |
| 1312 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1313 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
| 1314 | sdata->vif.type == NL80211_IFTYPE_MONITOR || |
| 1315 | !ieee80211_sdata_running(sdata)) |
| 1316 | continue; |
Eliad Peller | f6f3def | 2011-09-25 20:06:54 +0300 | [diff] [blame] | 1317 | |
Johannes Berg | 54bcbc6 | 2012-03-28 11:04:25 +0200 | [diff] [blame] | 1318 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
| 1319 | drv_conf_tx(local, sdata, i, |
| 1320 | &sdata->tx_conf[i]); |
| 1321 | } |
Eliad Peller | f6f3def | 2011-09-25 20:06:54 +0300 | [diff] [blame] | 1322 | } |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1323 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1324 | /* reconfigure hardware */ |
| 1325 | ieee80211_hw_config(local, ~0); |
| 1326 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1327 | ieee80211_configure_filter(local); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1328 | |
| 1329 | /* Finally also reconfigure all the BSS information */ |
| 1330 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1331 | u32 changed; |
| 1332 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 1333 | if (!ieee80211_sdata_running(sdata)) |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1334 | continue; |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1335 | |
| 1336 | /* common change flags for all interface types */ |
| 1337 | changed = BSS_CHANGED_ERP_CTS_PROT | |
| 1338 | BSS_CHANGED_ERP_PREAMBLE | |
| 1339 | BSS_CHANGED_ERP_SLOT | |
| 1340 | BSS_CHANGED_HT | |
| 1341 | BSS_CHANGED_BASIC_RATES | |
| 1342 | BSS_CHANGED_BEACON_INT | |
| 1343 | BSS_CHANGED_BSSID | |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 1344 | BSS_CHANGED_CQM | |
Eliad Peller | 55de47f | 2011-11-01 15:16:55 +0200 | [diff] [blame] | 1345 | BSS_CHANGED_QOS | |
| 1346 | BSS_CHANGED_IDLE; |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1347 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1348 | switch (sdata->vif.type) { |
| 1349 | case NL80211_IFTYPE_STATION: |
Eliad Peller | 0d392e9 | 2011-12-12 14:10:49 +0200 | [diff] [blame] | 1350 | changed |= BSS_CHANGED_ASSOC | |
| 1351 | BSS_CHANGED_ARP_FILTER; |
Eliad Peller | a7b545f | 2011-02-08 18:43:19 +0200 | [diff] [blame] | 1352 | mutex_lock(&sdata->u.mgd.mtx); |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1353 | ieee80211_bss_info_change_notify(sdata, changed); |
Eliad Peller | a7b545f | 2011-02-08 18:43:19 +0200 | [diff] [blame] | 1354 | mutex_unlock(&sdata->u.mgd.mtx); |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1355 | break; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1356 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1357 | changed |= BSS_CHANGED_IBSS; |
| 1358 | /* fall through */ |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1359 | case NL80211_IFTYPE_AP: |
Arik Nemtsov | e7979ac | 2011-11-22 19:33:18 +0200 | [diff] [blame] | 1360 | changed |= BSS_CHANGED_SSID; |
| 1361 | |
| 1362 | if (sdata->vif.type == NL80211_IFTYPE_AP) |
| 1363 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
| 1364 | |
Arik Nemtsov | 7827493 | 2011-09-04 11:11:32 +0300 | [diff] [blame] | 1365 | /* fall through */ |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1366 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1367 | changed |= BSS_CHANGED_BEACON | |
| 1368 | BSS_CHANGED_BEACON_ENABLED; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1369 | ieee80211_bss_info_change_notify(sdata, changed); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1370 | break; |
| 1371 | case NL80211_IFTYPE_WDS: |
| 1372 | break; |
| 1373 | case NL80211_IFTYPE_AP_VLAN: |
| 1374 | case NL80211_IFTYPE_MONITOR: |
| 1375 | /* ignore virtual */ |
| 1376 | break; |
| 1377 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 1378 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1379 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1380 | case NL80211_IFTYPE_P2P_GO: |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1381 | WARN_ON(1); |
| 1382 | break; |
| 1383 | } |
| 1384 | } |
| 1385 | |
Eyal Shapira | 8e1b23b | 2011-11-09 12:29:06 +0200 | [diff] [blame] | 1386 | ieee80211_recalc_ps(local, -1); |
| 1387 | |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1388 | /* |
Eliad Peller | 6e1b1b2 | 2012-01-26 13:36:05 +0200 | [diff] [blame] | 1389 | * The sta might be in psm against the ap (e.g. because |
| 1390 | * this was the state before a hw restart), so we |
| 1391 | * explicitly send a null packet in order to make sure |
| 1392 | * it'll sync against the ap (and get out of psm). |
| 1393 | */ |
| 1394 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { |
| 1395 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1396 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| 1397 | continue; |
| 1398 | |
| 1399 | ieee80211_send_nullfunc(local, sdata, 0); |
| 1400 | } |
| 1401 | } |
| 1402 | |
Arik Nemtsov | 2e8d397 | 2012-06-03 23:31:56 +0300 | [diff] [blame] | 1403 | /* APs are now beaconing, add back stations */ |
| 1404 | mutex_lock(&local->sta_mtx); |
| 1405 | list_for_each_entry(sta, &local->sta_list, list) { |
| 1406 | enum ieee80211_sta_state state; |
| 1407 | |
| 1408 | if (!sta->uploaded) |
| 1409 | continue; |
| 1410 | |
| 1411 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) |
| 1412 | continue; |
| 1413 | |
| 1414 | for (state = IEEE80211_STA_NOTEXIST; |
| 1415 | state < sta->sta_state; state++) |
| 1416 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, |
| 1417 | state + 1)); |
| 1418 | } |
| 1419 | mutex_unlock(&local->sta_mtx); |
| 1420 | |
Eyal Shapira | 7b21aea | 2012-05-29 02:00:22 -0700 | [diff] [blame] | 1421 | /* add back keys */ |
| 1422 | list_for_each_entry(sdata, &local->interfaces, list) |
| 1423 | if (ieee80211_sdata_running(sdata)) |
| 1424 | ieee80211_enable_keys(sdata); |
| 1425 | |
Eliad Peller | c620948 | 2012-07-02 15:08:25 +0300 | [diff] [blame] | 1426 | wake_up: |
Arik Nemtsov | 04800ad | 2012-06-06 11:25:02 +0300 | [diff] [blame] | 1427 | local->in_reconfig = false; |
| 1428 | barrier(); |
| 1429 | |
Eliad Peller | 6e1b1b2 | 2012-01-26 13:36:05 +0200 | [diff] [blame] | 1430 | /* |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1431 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation |
| 1432 | * sessions can be established after a resume. |
| 1433 | * |
| 1434 | * Also tear down aggregation sessions since reconfiguring |
| 1435 | * them in a hardware restart scenario is not easily done |
| 1436 | * right now, and the hardware will have lost information |
| 1437 | * about the sessions, but we and the AP still think they |
| 1438 | * are active. This is really a workaround though. |
| 1439 | */ |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1440 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1441 | mutex_lock(&local->sta_mtx); |
| 1442 | |
| 1443 | list_for_each_entry(sta, &local->sta_list, list) { |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 1444 | ieee80211_sta_tear_down_BA_sessions(sta, true); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 1445 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1446 | } |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1447 | |
| 1448 | mutex_unlock(&local->sta_mtx); |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1449 | } |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1450 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1451 | ieee80211_wake_queues_by_reason(hw, |
| 1452 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| 1453 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1454 | /* |
| 1455 | * If this is for hw restart things are still running. |
| 1456 | * We may want to change that later, however. |
| 1457 | */ |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1458 | if (!local->suspended) |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1459 | return 0; |
| 1460 | |
| 1461 | #ifdef CONFIG_PM |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1462 | /* first set suspended false, then resuming */ |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1463 | local->suspended = false; |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1464 | mb(); |
| 1465 | local->resuming = false; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1466 | |
| 1467 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1468 | switch(sdata->vif.type) { |
| 1469 | case NL80211_IFTYPE_STATION: |
| 1470 | ieee80211_sta_restart(sdata); |
| 1471 | break; |
| 1472 | case NL80211_IFTYPE_ADHOC: |
| 1473 | ieee80211_ibss_restart(sdata); |
| 1474 | break; |
| 1475 | case NL80211_IFTYPE_MESH_POINT: |
| 1476 | ieee80211_mesh_restart(sdata); |
| 1477 | break; |
| 1478 | default: |
| 1479 | break; |
| 1480 | } |
| 1481 | } |
| 1482 | |
Johannes Berg | 26d5953 | 2011-04-01 13:52:48 +0200 | [diff] [blame] | 1483 | mod_timer(&local->sta_cleanup, jiffies + 1); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1484 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1485 | mutex_lock(&local->sta_mtx); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1486 | list_for_each_entry(sta, &local->sta_list, list) |
| 1487 | mesh_plink_restart(sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1488 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1489 | #else |
| 1490 | WARN_ON(1); |
| 1491 | #endif |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1492 | return 0; |
| 1493 | } |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1494 | |
Johannes Berg | 95acac6 | 2011-07-12 12:30:59 +0200 | [diff] [blame] | 1495 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
| 1496 | { |
| 1497 | struct ieee80211_sub_if_data *sdata; |
| 1498 | struct ieee80211_local *local; |
| 1499 | struct ieee80211_key *key; |
| 1500 | |
| 1501 | if (WARN_ON(!vif)) |
| 1502 | return; |
| 1503 | |
| 1504 | sdata = vif_to_sdata(vif); |
| 1505 | local = sdata->local; |
| 1506 | |
| 1507 | if (WARN_ON(!local->resuming)) |
| 1508 | return; |
| 1509 | |
| 1510 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) |
| 1511 | return; |
| 1512 | |
| 1513 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; |
| 1514 | |
| 1515 | mutex_lock(&local->key_mtx); |
| 1516 | list_for_each_entry(key, &sdata->key_list, list) |
| 1517 | key->flags |= KEY_FLAG_TAINTED; |
| 1518 | mutex_unlock(&local->key_mtx); |
| 1519 | } |
| 1520 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); |
| 1521 | |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1522 | static int check_mgd_smps(struct ieee80211_if_managed *ifmgd, |
| 1523 | enum ieee80211_smps_mode *smps_mode) |
| 1524 | { |
| 1525 | if (ifmgd->associated) { |
| 1526 | *smps_mode = ifmgd->ap_smps; |
| 1527 | |
| 1528 | if (*smps_mode == IEEE80211_SMPS_AUTOMATIC) { |
| 1529 | if (ifmgd->powersave) |
| 1530 | *smps_mode = IEEE80211_SMPS_DYNAMIC; |
| 1531 | else |
| 1532 | *smps_mode = IEEE80211_SMPS_OFF; |
| 1533 | } |
| 1534 | |
| 1535 | return 1; |
| 1536 | } |
| 1537 | |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | /* must hold iflist_mtx */ |
Johannes Berg | 025e6be | 2010-10-05 10:41:47 +0200 | [diff] [blame] | 1542 | void ieee80211_recalc_smps(struct ieee80211_local *local) |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1543 | { |
| 1544 | struct ieee80211_sub_if_data *sdata; |
| 1545 | enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_OFF; |
| 1546 | int count = 0; |
| 1547 | |
Johannes Berg | 46a5eba | 2010-09-15 13:28:15 +0200 | [diff] [blame] | 1548 | lockdep_assert_held(&local->iflist_mtx); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1549 | |
| 1550 | /* |
| 1551 | * This function could be improved to handle multiple |
| 1552 | * interfaces better, but right now it makes any |
| 1553 | * non-station interfaces force SM PS to be turned |
| 1554 | * off. If there are multiple station interfaces it |
| 1555 | * could also use the best possible mode, e.g. if |
| 1556 | * one is in static and the other in dynamic then |
| 1557 | * dynamic is ok. |
| 1558 | */ |
| 1559 | |
| 1560 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 26a5845 | 2010-08-27 12:35:55 +0200 | [diff] [blame] | 1561 | if (!ieee80211_sdata_running(sdata)) |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1562 | continue; |
| 1563 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| 1564 | goto set; |
Johannes Berg | 025e6be | 2010-10-05 10:41:47 +0200 | [diff] [blame] | 1565 | |
| 1566 | count += check_mgd_smps(&sdata->u.mgd, &smps_mode); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1567 | |
| 1568 | if (count > 1) { |
| 1569 | smps_mode = IEEE80211_SMPS_OFF; |
| 1570 | break; |
| 1571 | } |
| 1572 | } |
| 1573 | |
| 1574 | if (smps_mode == local->smps_mode) |
| 1575 | return; |
| 1576 | |
| 1577 | set: |
| 1578 | local->smps_mode = smps_mode; |
| 1579 | /* changed flag is auto-detected for this */ |
| 1580 | ieee80211_hw_config(local, 0); |
| 1581 | } |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1582 | |
| 1583 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
| 1584 | { |
| 1585 | int i; |
| 1586 | |
| 1587 | for (i = 0; i < n_ids; i++) |
| 1588 | if (ids[i] == id) |
| 1589 | return true; |
| 1590 | return false; |
| 1591 | } |
| 1592 | |
| 1593 | /** |
| 1594 | * ieee80211_ie_split - split an IE buffer according to ordering |
| 1595 | * |
| 1596 | * @ies: the IE buffer |
| 1597 | * @ielen: the length of the IE buffer |
| 1598 | * @ids: an array with element IDs that are allowed before |
| 1599 | * the split |
| 1600 | * @n_ids: the size of the element ID array |
| 1601 | * @offset: offset where to start splitting in the buffer |
| 1602 | * |
| 1603 | * This function splits an IE buffer by updating the @offset |
| 1604 | * variable to point to the location where the buffer should be |
| 1605 | * split. |
| 1606 | * |
| 1607 | * It assumes that the given IE buffer is well-formed, this |
| 1608 | * has to be guaranteed by the caller! |
| 1609 | * |
| 1610 | * It also assumes that the IEs in the buffer are ordered |
| 1611 | * correctly, if not the result of using this function will not |
| 1612 | * be ordered correctly either, i.e. it does no reordering. |
| 1613 | * |
| 1614 | * The function returns the offset where the next part of the |
| 1615 | * buffer starts, which may be @ielen if the entire (remainder) |
| 1616 | * of the buffer should be used. |
| 1617 | */ |
| 1618 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, |
| 1619 | const u8 *ids, int n_ids, size_t offset) |
| 1620 | { |
| 1621 | size_t pos = offset; |
| 1622 | |
| 1623 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) |
| 1624 | pos += 2 + ies[pos + 1]; |
| 1625 | |
| 1626 | return pos; |
| 1627 | } |
| 1628 | |
| 1629 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
| 1630 | { |
| 1631 | size_t pos = offset; |
| 1632 | |
| 1633 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) |
| 1634 | pos += 2 + ies[pos + 1]; |
| 1635 | |
| 1636 | return pos; |
| 1637 | } |
Meenakshi Venkataraman | 615f7b9 | 2011-07-08 08:46:22 -0700 | [diff] [blame] | 1638 | |
| 1639 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, |
| 1640 | int rssi_min_thold, |
| 1641 | int rssi_max_thold) |
| 1642 | { |
| 1643 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); |
| 1644 | |
| 1645 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
| 1646 | return; |
| 1647 | |
| 1648 | /* |
| 1649 | * Scale up threshold values before storing it, as the RSSI averaging |
| 1650 | * algorithm uses a scaled up value as well. Change this scaling |
| 1651 | * factor if the RSSI averaging algorithm changes. |
| 1652 | */ |
| 1653 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; |
| 1654 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; |
| 1655 | } |
| 1656 | |
| 1657 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, |
| 1658 | int rssi_min_thold, |
| 1659 | int rssi_max_thold) |
| 1660 | { |
| 1661 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1662 | |
| 1663 | WARN_ON(rssi_min_thold == rssi_max_thold || |
| 1664 | rssi_min_thold > rssi_max_thold); |
| 1665 | |
| 1666 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, |
| 1667 | rssi_max_thold); |
| 1668 | } |
| 1669 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); |
| 1670 | |
| 1671 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) |
| 1672 | { |
| 1673 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1674 | |
| 1675 | _ieee80211_enable_rssi_reports(sdata, 0, 0); |
| 1676 | } |
| 1677 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1678 | |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1679 | 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] | 1680 | u16 cap) |
| 1681 | { |
| 1682 | __le16 tmp; |
| 1683 | |
| 1684 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 1685 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 1686 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 1687 | |
| 1688 | /* capability flags */ |
| 1689 | tmp = cpu_to_le16(cap); |
| 1690 | memcpy(pos, &tmp, sizeof(u16)); |
| 1691 | pos += sizeof(u16); |
| 1692 | |
| 1693 | /* AMPDU parameters */ |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1694 | *pos++ = ht_cap->ampdu_factor | |
| 1695 | (ht_cap->ampdu_density << |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1696 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
| 1697 | |
| 1698 | /* MCS set */ |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1699 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
| 1700 | pos += sizeof(ht_cap->mcs); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1701 | |
| 1702 | /* extended capabilities */ |
| 1703 | pos += sizeof(__le16); |
| 1704 | |
| 1705 | /* BF capabilities */ |
| 1706 | pos += sizeof(__le32); |
| 1707 | |
| 1708 | /* antenna selection */ |
| 1709 | pos += sizeof(u8); |
| 1710 | |
| 1711 | return pos; |
| 1712 | } |
| 1713 | |
Mahesh Palivela | ba0afa2 | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1714 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
| 1715 | u32 cap) |
| 1716 | { |
| 1717 | __le32 tmp; |
| 1718 | |
| 1719 | *pos++ = WLAN_EID_VHT_CAPABILITY; |
| 1720 | *pos++ = sizeof(struct ieee80211_vht_capabilities); |
| 1721 | memset(pos, 0, sizeof(struct ieee80211_vht_capabilities)); |
| 1722 | |
| 1723 | /* capability flags */ |
| 1724 | tmp = cpu_to_le32(cap); |
| 1725 | memcpy(pos, &tmp, sizeof(u32)); |
| 1726 | pos += sizeof(u32); |
| 1727 | |
| 1728 | /* VHT MCS set */ |
| 1729 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); |
| 1730 | pos += sizeof(vht_cap->vht_mcs); |
| 1731 | |
| 1732 | return pos; |
| 1733 | } |
| 1734 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1735 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1736 | struct ieee80211_channel *channel, |
Ashok Nagarajan | 431e315 | 2012-04-30 14:20:29 -0700 | [diff] [blame] | 1737 | enum nl80211_channel_type channel_type, |
| 1738 | u16 prot_mode) |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1739 | { |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1740 | struct ieee80211_ht_operation *ht_oper; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1741 | /* Build HT Information */ |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1742 | *pos++ = WLAN_EID_HT_OPERATION; |
| 1743 | *pos++ = sizeof(struct ieee80211_ht_operation); |
| 1744 | ht_oper = (struct ieee80211_ht_operation *)pos; |
| 1745 | ht_oper->primary_chan = |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1746 | ieee80211_frequency_to_channel(channel->center_freq); |
| 1747 | switch (channel_type) { |
| 1748 | case NL80211_CHAN_HT40MINUS: |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1749 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1750 | break; |
| 1751 | case NL80211_CHAN_HT40PLUS: |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1752 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1753 | break; |
| 1754 | case NL80211_CHAN_HT20: |
| 1755 | default: |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1756 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1757 | break; |
| 1758 | } |
Thomas Pedersen | aee286c | 2012-04-18 19:24:14 -0700 | [diff] [blame] | 1759 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
| 1760 | channel_type != NL80211_CHAN_NO_HT && |
| 1761 | channel_type != NL80211_CHAN_HT20) |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1762 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
Simon Wunderlich | ff3cc5f | 2011-11-30 16:56:33 +0100 | [diff] [blame] | 1763 | |
Ashok Nagarajan | 431e315 | 2012-04-30 14:20:29 -0700 | [diff] [blame] | 1764 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1765 | ht_oper->stbc_param = 0x0000; |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1766 | |
| 1767 | /* It seems that Basic MCS set and Supported MCS set |
| 1768 | are identical for the first 10 bytes */ |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1769 | memset(&ht_oper->basic_set, 0, 16); |
| 1770 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1771 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1772 | return pos + sizeof(struct ieee80211_ht_operation); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1773 | } |
| 1774 | |
| 1775 | enum nl80211_channel_type |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1776 | ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper) |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1777 | { |
| 1778 | enum nl80211_channel_type channel_type; |
| 1779 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1780 | if (!ht_oper) |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1781 | return NL80211_CHAN_NO_HT; |
| 1782 | |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 1783 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1784 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
| 1785 | channel_type = NL80211_CHAN_HT20; |
| 1786 | break; |
| 1787 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| 1788 | channel_type = NL80211_CHAN_HT40PLUS; |
| 1789 | break; |
| 1790 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| 1791 | channel_type = NL80211_CHAN_HT40MINUS; |
| 1792 | break; |
| 1793 | default: |
| 1794 | channel_type = NL80211_CHAN_NO_HT; |
| 1795 | } |
| 1796 | |
| 1797 | return channel_type; |
| 1798 | } |
| 1799 | |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 1800 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 1801 | struct sk_buff *skb, bool need_basic) |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1802 | { |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1803 | struct ieee80211_local *local = sdata->local; |
| 1804 | struct ieee80211_supported_band *sband; |
| 1805 | int rate; |
| 1806 | u8 i, rates, *pos; |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 1807 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1808 | |
| 1809 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1810 | rates = sband->n_bitrates; |
| 1811 | if (rates > 8) |
| 1812 | rates = 8; |
| 1813 | |
| 1814 | if (skb_tailroom(skb) < rates + 2) |
| 1815 | return -ENOMEM; |
| 1816 | |
| 1817 | pos = skb_put(skb, rates + 2); |
| 1818 | *pos++ = WLAN_EID_SUPP_RATES; |
| 1819 | *pos++ = rates; |
| 1820 | for (i = 0; i < rates; i++) { |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 1821 | u8 basic = 0; |
| 1822 | if (need_basic && basic_rates & BIT(i)) |
| 1823 | basic = 0x80; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1824 | rate = sband->bitrates[i].bitrate; |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 1825 | *pos++ = basic | (u8) (rate / 5); |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1826 | } |
| 1827 | |
| 1828 | return 0; |
| 1829 | } |
| 1830 | |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 1831 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 1832 | struct sk_buff *skb, bool need_basic) |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1833 | { |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1834 | struct ieee80211_local *local = sdata->local; |
| 1835 | struct ieee80211_supported_band *sband; |
| 1836 | int rate; |
| 1837 | u8 i, exrates, *pos; |
Johannes Berg | fc8a732 | 2012-06-28 10:33:25 +0200 | [diff] [blame] | 1838 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1839 | |
| 1840 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1841 | exrates = sband->n_bitrates; |
| 1842 | if (exrates > 8) |
| 1843 | exrates -= 8; |
| 1844 | else |
| 1845 | exrates = 0; |
| 1846 | |
| 1847 | if (skb_tailroom(skb) < exrates + 2) |
| 1848 | return -ENOMEM; |
| 1849 | |
| 1850 | if (exrates) { |
| 1851 | pos = skb_put(skb, exrates + 2); |
| 1852 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 1853 | *pos++ = exrates; |
| 1854 | for (i = 8; i < sband->n_bitrates; i++) { |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 1855 | u8 basic = 0; |
| 1856 | if (need_basic && basic_rates & BIT(i)) |
| 1857 | basic = 0x80; |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1858 | rate = sband->bitrates[i].bitrate; |
Ashok Nagarajan | 657c3e0 | 2012-04-02 21:21:20 -0700 | [diff] [blame] | 1859 | *pos++ = basic | (u8) (rate / 5); |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1860 | } |
| 1861 | } |
| 1862 | return 0; |
| 1863 | } |
Wey-Yi Guy | 1dae27f | 2012-04-13 12:02:57 -0700 | [diff] [blame] | 1864 | |
| 1865 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) |
| 1866 | { |
| 1867 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1868 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
| 1869 | |
Wey-Yi Guy | be6bcab | 2012-04-23 09:30:32 -0700 | [diff] [blame] | 1870 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
| 1871 | /* non-managed type inferfaces */ |
| 1872 | return 0; |
| 1873 | } |
Wey-Yi Guy | 1dae27f | 2012-04-13 12:02:57 -0700 | [diff] [blame] | 1874 | return ifmgd->ave_beacon_signal; |
| 1875 | } |
Wey-Yi Guy | 0d8a0a1 | 2012-04-20 11:57:00 -0700 | [diff] [blame] | 1876 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |