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 | |
| 109 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, |
| 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 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 123 | if (local->hw.conf.channel->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, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 165 | size_t frame_len, |
| 166 | struct ieee80211_rate *rate) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 167 | { |
| 168 | struct ieee80211_local *local = hw_to_local(hw); |
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 | |
| 182 | dur = ieee80211_frame_duration(local, 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 | |
| 201 | sband = local->hw.wiphy->bands[local->hw.conf.channel->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 */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 216 | dur = ieee80211_frame_duration(local, 10, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 217 | erp, short_preamble); |
| 218 | /* Data frame duration */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 219 | dur += ieee80211_frame_duration(local, frame_len, rate->bitrate, |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 220 | erp, short_preamble); |
| 221 | /* ACK duration */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 222 | dur += ieee80211_frame_duration(local, 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 | |
| 242 | sband = local->hw.wiphy->bands[local->hw.conf.channel->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 */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 256 | dur = ieee80211_frame_duration(local, 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 */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 260 | dur += ieee80211_frame_duration(local, 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 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 268 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
| 269 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 270 | { |
| 271 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 272 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 273 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 274 | trace_wake_queue(local, queue, reason); |
| 275 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 276 | if (WARN_ON(queue >= hw->queues)) |
| 277 | return; |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 278 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 279 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
| 280 | |
| 281 | if (local->queue_stop_reasons[queue] != 0) |
| 282 | /* someone still has this queue stopped */ |
| 283 | return; |
| 284 | |
Johannes Berg | 7236fe2 | 2010-03-22 13:42:43 -0700 | [diff] [blame] | 285 | if (skb_queue_empty(&local->pending[queue])) { |
| 286 | rcu_read_lock(); |
Johannes Berg | 5b714c6 | 2010-08-27 13:45:28 +0200 | [diff] [blame] | 287 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| 288 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
| 289 | continue; |
Johannes Berg | 2337db8 | 2010-08-27 13:36:49 +0200 | [diff] [blame] | 290 | netif_wake_subqueue(sdata->dev, queue); |
Johannes Berg | 5b714c6 | 2010-08-27 13:45:28 +0200 | [diff] [blame] | 291 | } |
Johannes Berg | 7236fe2 | 2010-03-22 13:42:43 -0700 | [diff] [blame] | 292 | rcu_read_unlock(); |
| 293 | } else |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 294 | tasklet_schedule(&local->tx_pending_tasklet); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 295 | } |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 296 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 297 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
| 298 | enum queue_stop_reason reason) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 299 | { |
| 300 | struct ieee80211_local *local = hw_to_local(hw); |
| 301 | unsigned long flags; |
| 302 | |
| 303 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 304 | __ieee80211_wake_queue(hw, queue, reason); |
| 305 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 306 | } |
| 307 | |
| 308 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) |
| 309 | { |
| 310 | ieee80211_wake_queue_by_reason(hw, queue, |
| 311 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
| 312 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 313 | EXPORT_SYMBOL(ieee80211_wake_queue); |
| 314 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 315 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
| 316 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 317 | { |
| 318 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 319 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 320 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 321 | trace_stop_queue(local, queue, reason); |
| 322 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 323 | if (WARN_ON(queue >= hw->queues)) |
| 324 | return; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 325 | |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 326 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 327 | |
| 328 | rcu_read_lock(); |
| 329 | list_for_each_entry_rcu(sdata, &local->interfaces, list) |
Johannes Berg | 2337db8 | 2010-08-27 13:36:49 +0200 | [diff] [blame] | 330 | netif_stop_subqueue(sdata->dev, queue); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 331 | rcu_read_unlock(); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 332 | } |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 333 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 334 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
| 335 | enum queue_stop_reason reason) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 336 | { |
| 337 | struct ieee80211_local *local = hw_to_local(hw); |
| 338 | unsigned long flags; |
| 339 | |
| 340 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 341 | __ieee80211_stop_queue(hw, queue, reason); |
| 342 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 343 | } |
| 344 | |
| 345 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) |
| 346 | { |
| 347 | ieee80211_stop_queue_by_reason(hw, queue, |
| 348 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
| 349 | } |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 350 | EXPORT_SYMBOL(ieee80211_stop_queue); |
| 351 | |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 352 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
| 353 | struct sk_buff *skb) |
| 354 | { |
| 355 | struct ieee80211_hw *hw = &local->hw; |
| 356 | unsigned long flags; |
| 357 | int queue = skb_get_queue_mapping(skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 358 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 359 | |
| 360 | if (WARN_ON(!info->control.vif)) { |
Roel Kluin | 0819663 | 2009-10-06 15:52:35 +0200 | [diff] [blame] | 361 | kfree_skb(skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 362 | return; |
| 363 | } |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 364 | |
| 365 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 366 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 367 | __skb_queue_tail(&local->pending[queue], skb); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 368 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
| 369 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 370 | } |
| 371 | |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 372 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
| 373 | struct sk_buff_head *skbs, |
| 374 | void (*fn)(void *data), void *data) |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 375 | { |
| 376 | struct ieee80211_hw *hw = &local->hw; |
| 377 | struct sk_buff *skb; |
| 378 | unsigned long flags; |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 379 | int queue, i; |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 380 | |
| 381 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 382 | for (i = 0; i < hw->queues; i++) |
| 383 | __ieee80211_stop_queue(hw, i, |
| 384 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
| 385 | |
| 386 | while ((skb = skb_dequeue(skbs))) { |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 387 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 388 | |
| 389 | if (WARN_ON(!info->control.vif)) { |
Roel Kluin | 0819663 | 2009-10-06 15:52:35 +0200 | [diff] [blame] | 390 | kfree_skb(skb); |
Johannes Berg | a7bc376 | 2009-07-27 10:33:31 +0200 | [diff] [blame] | 391 | continue; |
| 392 | } |
| 393 | |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 394 | queue = skb_get_queue_mapping(skb); |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 395 | __skb_queue_tail(&local->pending[queue], skb); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 396 | } |
| 397 | |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 398 | if (fn) |
| 399 | fn(data); |
| 400 | |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 401 | for (i = 0; i < hw->queues; i++) |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 402 | __ieee80211_wake_queue(hw, i, |
| 403 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 404 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 405 | } |
| 406 | |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 407 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
| 408 | struct sk_buff_head *skbs) |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 409 | { |
Johannes Berg | b0b97a8 | 2011-09-29 16:04:30 +0200 | [diff] [blame] | 410 | ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 411 | } |
| 412 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 413 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
| 414 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 415 | { |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 416 | struct ieee80211_local *local = hw_to_local(hw); |
| 417 | unsigned long flags; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 418 | int i; |
| 419 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 420 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 421 | |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 422 | for (i = 0; i < hw->queues; i++) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 423 | __ieee80211_stop_queue(hw, i, reason); |
| 424 | |
| 425 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 426 | } |
| 427 | |
| 428 | void ieee80211_stop_queues(struct ieee80211_hw *hw) |
| 429 | { |
| 430 | ieee80211_stop_queues_by_reason(hw, |
| 431 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 432 | } |
| 433 | EXPORT_SYMBOL(ieee80211_stop_queues); |
| 434 | |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 435 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
| 436 | { |
| 437 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 438 | unsigned long flags; |
| 439 | int ret; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 440 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 441 | if (WARN_ON(queue >= hw->queues)) |
| 442 | return true; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 443 | |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 444 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 445 | ret = !!local->queue_stop_reasons[queue]; |
| 446 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 447 | return ret; |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 448 | } |
| 449 | EXPORT_SYMBOL(ieee80211_queue_stopped); |
| 450 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 451 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
| 452 | enum queue_stop_reason reason) |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 453 | { |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 454 | struct ieee80211_local *local = hw_to_local(hw); |
| 455 | unsigned long flags; |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 456 | int i; |
| 457 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 458 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 459 | |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 460 | for (i = 0; i < hw->queues; i++) |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 461 | __ieee80211_wake_queue(hw, i, reason); |
| 462 | |
| 463 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 464 | } |
| 465 | |
| 466 | void ieee80211_wake_queues(struct ieee80211_hw *hw) |
| 467 | { |
| 468 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); |
Johannes Berg | c2d1560 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 469 | } |
| 470 | EXPORT_SYMBOL(ieee80211_wake_queues); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 471 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 472 | void ieee80211_iterate_active_interfaces( |
| 473 | struct ieee80211_hw *hw, |
| 474 | void (*iterator)(void *data, u8 *mac, |
| 475 | struct ieee80211_vif *vif), |
| 476 | void *data) |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 477 | { |
| 478 | struct ieee80211_local *local = hw_to_local(hw); |
| 479 | struct ieee80211_sub_if_data *sdata; |
| 480 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 481 | mutex_lock(&local->iflist_mtx); |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 482 | |
| 483 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 484 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 485 | case NL80211_IFTYPE_MONITOR: |
| 486 | case NL80211_IFTYPE_AP_VLAN: |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 487 | continue; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 488 | default: |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 489 | break; |
| 490 | } |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 491 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 492 | iterator(data, sdata->vif.addr, |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 493 | &sdata->vif); |
| 494 | } |
| 495 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 496 | mutex_unlock(&local->iflist_mtx); |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 497 | } |
| 498 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); |
| 499 | |
| 500 | void ieee80211_iterate_active_interfaces_atomic( |
| 501 | struct ieee80211_hw *hw, |
| 502 | void (*iterator)(void *data, u8 *mac, |
| 503 | struct ieee80211_vif *vif), |
| 504 | void *data) |
| 505 | { |
| 506 | struct ieee80211_local *local = hw_to_local(hw); |
| 507 | struct ieee80211_sub_if_data *sdata; |
| 508 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 509 | rcu_read_lock(); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 510 | |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 511 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 512 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 513 | case NL80211_IFTYPE_MONITOR: |
| 514 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 515 | continue; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 516 | default: |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 517 | break; |
| 518 | } |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 519 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 520 | iterator(data, sdata->vif.addr, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 521 | &sdata->vif); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 522 | } |
Johannes Berg | e38bad4 | 2007-11-28 10:55:32 +0100 | [diff] [blame] | 523 | |
| 524 | rcu_read_unlock(); |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 525 | } |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 526 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
Johannes Berg | 37ffc8d | 2008-09-08 16:40:36 +0200 | [diff] [blame] | 527 | |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 528 | /* |
| 529 | * Nothing should have been stuffed into the workqueue during |
| 530 | * the suspend->resume cycle. If this WARN is seen then there |
| 531 | * is a bug with either the driver suspend or something in |
| 532 | * mac80211 stuffing into the workqueue which we haven't yet |
| 533 | * cleared during mac80211's suspend cycle. |
| 534 | */ |
| 535 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) |
| 536 | { |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 537 | if (WARN(local->suspended && !local->resuming, |
| 538 | "queueing ieee80211 work while going to suspend\n")) |
| 539 | return false; |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 540 | |
| 541 | return true; |
| 542 | } |
| 543 | |
| 544 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) |
| 545 | { |
| 546 | struct ieee80211_local *local = hw_to_local(hw); |
| 547 | |
| 548 | if (!ieee80211_can_queue_work(local)) |
| 549 | return; |
| 550 | |
| 551 | queue_work(local->workqueue, work); |
| 552 | } |
| 553 | EXPORT_SYMBOL(ieee80211_queue_work); |
| 554 | |
| 555 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
| 556 | struct delayed_work *dwork, |
| 557 | unsigned long delay) |
| 558 | { |
| 559 | struct ieee80211_local *local = hw_to_local(hw); |
| 560 | |
| 561 | if (!ieee80211_can_queue_work(local)) |
| 562 | return; |
| 563 | |
| 564 | queue_delayed_work(local->workqueue, dwork, delay); |
| 565 | } |
| 566 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); |
| 567 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 568 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, |
| 569 | struct ieee802_11_elems *elems, |
| 570 | u64 filter, u32 crc) |
| 571 | { |
| 572 | size_t left = len; |
| 573 | u8 *pos = start; |
| 574 | bool calc_crc = filter != 0; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 575 | DECLARE_BITMAP(seen_elems, 256); |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 576 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 577 | bitmap_zero(seen_elems, 256); |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 578 | memset(elems, 0, sizeof(*elems)); |
| 579 | elems->ie_start = start; |
| 580 | elems->total_len = len; |
| 581 | |
| 582 | while (left >= 2) { |
| 583 | u8 id, elen; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 584 | bool elem_parse_failed; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 585 | |
| 586 | id = *pos++; |
| 587 | elen = *pos++; |
| 588 | left -= 2; |
| 589 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 590 | if (elen > left) { |
| 591 | elems->parse_error = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 592 | break; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | if (id != WLAN_EID_VENDOR_SPECIFIC && |
| 596 | id != WLAN_EID_QUIET && |
| 597 | test_bit(id, seen_elems)) { |
| 598 | elems->parse_error = true; |
| 599 | left -= elen; |
| 600 | pos += elen; |
| 601 | continue; |
| 602 | } |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 603 | |
| 604 | if (calc_crc && id < 64 && (filter & (1ULL << id))) |
| 605 | crc = crc32_be(crc, pos - 2, elen + 2); |
| 606 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 607 | elem_parse_failed = false; |
| 608 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 609 | switch (id) { |
| 610 | case WLAN_EID_SSID: |
| 611 | elems->ssid = pos; |
| 612 | elems->ssid_len = elen; |
| 613 | break; |
| 614 | case WLAN_EID_SUPP_RATES: |
| 615 | elems->supp_rates = pos; |
| 616 | elems->supp_rates_len = elen; |
| 617 | break; |
| 618 | case WLAN_EID_FH_PARAMS: |
| 619 | elems->fh_params = pos; |
| 620 | elems->fh_params_len = elen; |
| 621 | break; |
| 622 | case WLAN_EID_DS_PARAMS: |
| 623 | elems->ds_params = pos; |
| 624 | elems->ds_params_len = elen; |
| 625 | break; |
| 626 | case WLAN_EID_CF_PARAMS: |
| 627 | elems->cf_params = pos; |
| 628 | elems->cf_params_len = elen; |
| 629 | break; |
| 630 | case WLAN_EID_TIM: |
| 631 | if (elen >= sizeof(struct ieee80211_tim_ie)) { |
| 632 | elems->tim = (void *)pos; |
| 633 | elems->tim_len = elen; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 634 | } else |
| 635 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 636 | break; |
| 637 | case WLAN_EID_IBSS_PARAMS: |
| 638 | elems->ibss_params = pos; |
| 639 | elems->ibss_params_len = elen; |
| 640 | break; |
| 641 | case WLAN_EID_CHALLENGE: |
| 642 | elems->challenge = pos; |
| 643 | elems->challenge_len = elen; |
| 644 | break; |
| 645 | case WLAN_EID_VENDOR_SPECIFIC: |
| 646 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
| 647 | pos[2] == 0xf2) { |
| 648 | /* Microsoft OUI (00:50:F2) */ |
| 649 | |
| 650 | if (calc_crc) |
| 651 | crc = crc32_be(crc, pos - 2, elen + 2); |
| 652 | |
| 653 | if (pos[3] == 1) { |
| 654 | /* OUI Type 1 - WPA IE */ |
| 655 | elems->wpa = pos; |
| 656 | elems->wpa_len = elen; |
| 657 | } else if (elen >= 5 && pos[3] == 2) { |
| 658 | /* OUI Type 2 - WMM IE */ |
| 659 | if (pos[4] == 0) { |
| 660 | elems->wmm_info = pos; |
| 661 | elems->wmm_info_len = elen; |
| 662 | } else if (pos[4] == 1) { |
| 663 | elems->wmm_param = pos; |
| 664 | elems->wmm_param_len = elen; |
| 665 | } |
| 666 | } |
| 667 | } |
| 668 | break; |
| 669 | case WLAN_EID_RSN: |
| 670 | elems->rsn = pos; |
| 671 | elems->rsn_len = elen; |
| 672 | break; |
| 673 | case WLAN_EID_ERP_INFO: |
| 674 | elems->erp_info = pos; |
| 675 | elems->erp_info_len = elen; |
| 676 | break; |
| 677 | case WLAN_EID_EXT_SUPP_RATES: |
| 678 | elems->ext_supp_rates = pos; |
| 679 | elems->ext_supp_rates_len = elen; |
| 680 | break; |
| 681 | case WLAN_EID_HT_CAPABILITY: |
| 682 | if (elen >= sizeof(struct ieee80211_ht_cap)) |
| 683 | elems->ht_cap_elem = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 684 | else |
| 685 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 686 | break; |
| 687 | case WLAN_EID_HT_INFORMATION: |
| 688 | if (elen >= sizeof(struct ieee80211_ht_info)) |
| 689 | elems->ht_info_elem = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 690 | else |
| 691 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 692 | break; |
| 693 | case WLAN_EID_MESH_ID: |
| 694 | elems->mesh_id = pos; |
| 695 | elems->mesh_id_len = elen; |
| 696 | break; |
| 697 | case WLAN_EID_MESH_CONFIG: |
| 698 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) |
| 699 | elems->mesh_config = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 700 | else |
| 701 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 702 | break; |
| 703 | case WLAN_EID_PEER_MGMT: |
| 704 | elems->peering = pos; |
| 705 | elems->peering_len = elen; |
| 706 | break; |
| 707 | case WLAN_EID_PREQ: |
| 708 | elems->preq = pos; |
| 709 | elems->preq_len = elen; |
| 710 | break; |
| 711 | case WLAN_EID_PREP: |
| 712 | elems->prep = pos; |
| 713 | elems->prep_len = elen; |
| 714 | break; |
| 715 | case WLAN_EID_PERR: |
| 716 | elems->perr = pos; |
| 717 | elems->perr_len = elen; |
| 718 | break; |
| 719 | case WLAN_EID_RANN: |
| 720 | if (elen >= sizeof(struct ieee80211_rann_ie)) |
| 721 | elems->rann = (void *)pos; |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 722 | else |
| 723 | elem_parse_failed = true; |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 724 | break; |
| 725 | case WLAN_EID_CHANNEL_SWITCH: |
| 726 | elems->ch_switch_elem = pos; |
| 727 | elems->ch_switch_elem_len = elen; |
| 728 | break; |
| 729 | case WLAN_EID_QUIET: |
| 730 | if (!elems->quiet_elem) { |
| 731 | elems->quiet_elem = pos; |
| 732 | elems->quiet_elem_len = elen; |
| 733 | } |
| 734 | elems->num_of_quiet_elem++; |
| 735 | break; |
| 736 | case WLAN_EID_COUNTRY: |
| 737 | elems->country_elem = pos; |
| 738 | elems->country_elem_len = elen; |
| 739 | break; |
| 740 | case WLAN_EID_PWR_CONSTRAINT: |
| 741 | elems->pwr_constr_elem = pos; |
| 742 | elems->pwr_constr_elem_len = elen; |
| 743 | break; |
| 744 | case WLAN_EID_TIMEOUT_INTERVAL: |
| 745 | elems->timeout_int = pos; |
| 746 | elems->timeout_int_len = elen; |
| 747 | break; |
| 748 | default: |
| 749 | break; |
| 750 | } |
| 751 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 752 | if (elem_parse_failed) |
| 753 | elems->parse_error = true; |
| 754 | else |
| 755 | set_bit(id, seen_elems); |
| 756 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 757 | left -= elen; |
| 758 | pos += elen; |
| 759 | } |
| 760 | |
Paul Stewart | fcff4f1 | 2012-02-23 17:59:53 -0800 | [diff] [blame] | 761 | if (left != 0) |
| 762 | elems->parse_error = true; |
| 763 | |
Johannes Berg | dd76986 | 2011-11-18 16:54:50 +0100 | [diff] [blame] | 764 | return crc; |
| 765 | } |
| 766 | |
Johannes Berg | 37ffc8d | 2008-09-08 16:40:36 +0200 | [diff] [blame] | 767 | void ieee802_11_parse_elems(u8 *start, size_t len, |
| 768 | struct ieee802_11_elems *elems) |
| 769 | { |
Johannes Berg | d91f36d | 2009-04-16 13:17:26 +0200 | [diff] [blame] | 770 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); |
| 771 | } |
| 772 | |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 773 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
| 774 | bool bss_notify) |
Johannes Berg | 5825fe1 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 775 | { |
| 776 | struct ieee80211_local *local = sdata->local; |
| 777 | struct ieee80211_tx_queue_params qparam; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 778 | int queue; |
| 779 | bool use_11b; |
| 780 | int aCWmin, aCWmax; |
Johannes Berg | 5825fe1 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 781 | |
| 782 | if (!local->ops->conf_tx) |
| 783 | return; |
| 784 | |
| 785 | memset(&qparam, 0, sizeof(qparam)); |
| 786 | |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 787 | use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) && |
| 788 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
Johannes Berg | 5825fe1 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 789 | |
Johannes Berg | 005e472 | 2012-02-26 11:24:35 +0100 | [diff] [blame] | 790 | for (queue = 0; queue < local->hw.queues; queue++) { |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 791 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
| 792 | aCWmax = 1023; |
| 793 | if (use_11b) |
| 794 | aCWmin = 31; |
| 795 | else |
| 796 | aCWmin = 15; |
Johannes Berg | 5825fe1 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 797 | |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 798 | switch (queue) { |
| 799 | case 3: /* AC_BK */ |
Johannes Berg | 7ba10a8 | 2009-05-27 09:41:06 +0200 | [diff] [blame] | 800 | qparam.cw_max = aCWmax; |
| 801 | qparam.cw_min = aCWmin; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 802 | qparam.txop = 0; |
| 803 | qparam.aifs = 7; |
| 804 | break; |
| 805 | default: /* never happens but let's not leave undefined */ |
| 806 | case 2: /* AC_BE */ |
Johannes Berg | 7ba10a8 | 2009-05-27 09:41:06 +0200 | [diff] [blame] | 807 | qparam.cw_max = aCWmax; |
| 808 | qparam.cw_min = aCWmin; |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 809 | qparam.txop = 0; |
| 810 | qparam.aifs = 3; |
| 811 | break; |
| 812 | case 1: /* AC_VI */ |
| 813 | qparam.cw_max = aCWmin; |
| 814 | qparam.cw_min = (aCWmin + 1) / 2 - 1; |
| 815 | if (use_11b) |
| 816 | qparam.txop = 6016/32; |
| 817 | else |
| 818 | qparam.txop = 3008/32; |
| 819 | qparam.aifs = 2; |
| 820 | break; |
| 821 | case 0: /* AC_VO */ |
| 822 | qparam.cw_max = (aCWmin + 1) / 2 - 1; |
| 823 | qparam.cw_min = (aCWmin + 1) / 4 - 1; |
| 824 | if (use_11b) |
| 825 | qparam.txop = 3264/32; |
| 826 | else |
| 827 | qparam.txop = 1504/32; |
| 828 | qparam.aifs = 2; |
| 829 | break; |
| 830 | } |
Johannes Berg | 5825fe1 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 831 | |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 832 | qparam.uapsd = false; |
| 833 | |
Eliad Peller | f6f3def | 2011-09-25 20:06:54 +0300 | [diff] [blame] | 834 | sdata->tx_conf[queue] = qparam; |
| 835 | drv_conf_tx(local, sdata, queue, &qparam); |
Johannes Berg | aa837e1 | 2009-05-07 16:16:24 +0200 | [diff] [blame] | 836 | } |
Stanislaw Gruszka | e1b3ec1 | 2010-03-29 12:18:34 +0200 | [diff] [blame] | 837 | |
| 838 | /* after reinitialize QoS TX queues setting to default, |
| 839 | * disable QoS at all */ |
Sujith | d973497 | 2010-07-23 10:47:11 +0530 | [diff] [blame] | 840 | |
| 841 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR) { |
| 842 | sdata->vif.bss_conf.qos = |
| 843 | sdata->vif.type != NL80211_IFTYPE_STATION; |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 844 | if (bss_notify) |
| 845 | ieee80211_bss_info_change_notify(sdata, |
| 846 | BSS_CHANGED_QOS); |
Sujith | d973497 | 2010-07-23 10:47:11 +0530 | [diff] [blame] | 847 | } |
Johannes Berg | 5825fe1 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 848 | } |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 849 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 850 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
| 851 | const size_t supp_rates_len, |
| 852 | const u8 *supp_rates) |
| 853 | { |
| 854 | struct ieee80211_local *local = sdata->local; |
| 855 | int i, have_higher_than_11mbit = 0; |
| 856 | |
| 857 | /* cf. IEEE 802.11 9.2.12 */ |
| 858 | for (i = 0; i < supp_rates_len; i++) |
| 859 | if ((supp_rates[i] & 0x7f) * 5 > 110) |
| 860 | have_higher_than_11mbit = 1; |
| 861 | |
| 862 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 863 | have_higher_than_11mbit) |
| 864 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 865 | else |
| 866 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
| 867 | |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 868 | ieee80211_set_wmm_default(sdata, true); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 869 | } |
| 870 | |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 871 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 872 | enum ieee80211_band band) |
| 873 | { |
| 874 | struct ieee80211_supported_band *sband; |
| 875 | struct ieee80211_rate *bitrates; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 876 | u32 mandatory_rates; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 877 | enum ieee80211_rate_flags mandatory_flag; |
| 878 | int i; |
| 879 | |
| 880 | sband = local->hw.wiphy->bands[band]; |
| 881 | if (!sband) { |
| 882 | WARN_ON(1); |
| 883 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 884 | } |
| 885 | |
| 886 | if (band == IEEE80211_BAND_2GHZ) |
| 887 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; |
| 888 | else |
| 889 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; |
| 890 | |
| 891 | bitrates = sband->bitrates; |
| 892 | mandatory_rates = 0; |
| 893 | for (i = 0; i < sband->n_bitrates; i++) |
| 894 | if (bitrates[i].flags & mandatory_flag) |
| 895 | mandatory_rates |= BIT(i); |
| 896 | return mandatory_rates; |
| 897 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 898 | |
| 899 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
| 900 | u16 transaction, u16 auth_alg, |
Antonio Quartulli | efa6a09 | 2012-01-09 19:43:06 +0100 | [diff] [blame] | 901 | u8 *extra, size_t extra_len, const u8 *da, |
| 902 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 903 | { |
| 904 | struct ieee80211_local *local = sdata->local; |
| 905 | struct sk_buff *skb; |
| 906 | struct ieee80211_mgmt *mgmt; |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 907 | int err; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 908 | |
| 909 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
Jouni Malinen | 65fc73a | 2009-03-20 21:21:16 +0200 | [diff] [blame] | 910 | sizeof(*mgmt) + 6 + extra_len); |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 911 | if (!skb) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 912 | return; |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 913 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 914 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 915 | |
| 916 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 917 | memset(mgmt, 0, 24 + 6); |
| 918 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 919 | IEEE80211_STYPE_AUTH); |
Antonio Quartulli | efa6a09 | 2012-01-09 19:43:06 +0100 | [diff] [blame] | 920 | memcpy(mgmt->da, da, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 921 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 922 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
| 923 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); |
| 924 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
| 925 | mgmt->u.auth.status_code = cpu_to_le16(0); |
| 926 | if (extra) |
| 927 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 928 | |
Johannes Berg | fffd093 | 2009-07-08 14:22:54 +0200 | [diff] [blame] | 929 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
| 930 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 931 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); |
| 932 | WARN_ON(err); |
| 933 | } |
| 934 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 935 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
| 936 | ieee80211_tx_skb(sdata, skb); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 937 | } |
| 938 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 939 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
Johannes Berg | 4d36ec5 | 2009-10-27 20:59:55 +0100 | [diff] [blame] | 940 | const u8 *ie, size_t ie_len, |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 941 | enum ieee80211_band band, u32 rate_mask, |
| 942 | u8 channel) |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 943 | { |
| 944 | struct ieee80211_supported_band *sband; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 945 | u8 *pos; |
| 946 | size_t offset = 0, noffset; |
| 947 | int supp_rates_len, i; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 948 | u8 rates[32]; |
| 949 | int num_rates; |
| 950 | int ext_rates_len; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 951 | |
Johannes Berg | 4d36ec5 | 2009-10-27 20:59:55 +0100 | [diff] [blame] | 952 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 953 | |
| 954 | pos = buffer; |
| 955 | |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 956 | num_rates = 0; |
| 957 | for (i = 0; i < sband->n_bitrates; i++) { |
| 958 | if ((BIT(i) & rate_mask) == 0) |
| 959 | continue; /* skip rate */ |
| 960 | rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5); |
| 961 | } |
| 962 | |
| 963 | supp_rates_len = min_t(int, num_rates, 8); |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 964 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 965 | *pos++ = WLAN_EID_SUPP_RATES; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 966 | *pos++ = supp_rates_len; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 967 | memcpy(pos, rates, supp_rates_len); |
| 968 | pos += supp_rates_len; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 969 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 970 | /* insert "request information" if in custom IEs */ |
| 971 | if (ie && ie_len) { |
| 972 | static const u8 before_extrates[] = { |
| 973 | WLAN_EID_SSID, |
| 974 | WLAN_EID_SUPP_RATES, |
| 975 | WLAN_EID_REQUEST, |
| 976 | }; |
| 977 | noffset = ieee80211_ie_split(ie, ie_len, |
| 978 | before_extrates, |
| 979 | ARRAY_SIZE(before_extrates), |
| 980 | offset); |
| 981 | memcpy(pos, ie + offset, noffset - offset); |
| 982 | pos += noffset - offset; |
| 983 | offset = noffset; |
| 984 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 985 | |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 986 | ext_rates_len = num_rates - supp_rates_len; |
| 987 | if (ext_rates_len > 0) { |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 988 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 989 | *pos++ = ext_rates_len; |
| 990 | memcpy(pos, rates + supp_rates_len, ext_rates_len); |
| 991 | pos += ext_rates_len; |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 992 | } |
| 993 | |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 994 | if (channel && sband->band == IEEE80211_BAND_2GHZ) { |
| 995 | *pos++ = WLAN_EID_DS_PARAMS; |
| 996 | *pos++ = 1; |
| 997 | *pos++ = channel; |
| 998 | } |
| 999 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1000 | /* insert custom IEs that go before HT */ |
| 1001 | if (ie && ie_len) { |
| 1002 | static const u8 before_ht[] = { |
| 1003 | WLAN_EID_SSID, |
| 1004 | WLAN_EID_SUPP_RATES, |
| 1005 | WLAN_EID_REQUEST, |
| 1006 | WLAN_EID_EXT_SUPP_RATES, |
| 1007 | WLAN_EID_DS_PARAMS, |
| 1008 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
| 1009 | }; |
| 1010 | noffset = ieee80211_ie_split(ie, ie_len, |
| 1011 | before_ht, ARRAY_SIZE(before_ht), |
| 1012 | offset); |
| 1013 | memcpy(pos, ie + offset, noffset - offset); |
| 1014 | pos += noffset - offset; |
| 1015 | offset = noffset; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1016 | } |
| 1017 | |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1018 | if (sband->ht_cap.ht_supported) |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1019 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
| 1020 | sband->ht_cap.cap); |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 1021 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1022 | /* |
| 1023 | * If adding more here, adjust code in main.c |
| 1024 | * that calculates local->scan_ies_len. |
| 1025 | */ |
| 1026 | |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1027 | /* add any remaining custom IEs */ |
| 1028 | if (ie && ie_len) { |
| 1029 | noffset = ie_len; |
| 1030 | memcpy(pos, ie + offset, noffset - offset); |
| 1031 | pos += noffset - offset; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1032 | } |
| 1033 | |
Mahesh Palivela | 5e89ac7 | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1034 | if (sband->vht_cap.vht_supported) |
| 1035 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
| 1036 | sband->vht_cap.cap); |
| 1037 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1038 | return pos - buffer; |
| 1039 | } |
| 1040 | |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1041 | 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] | 1042 | u8 *dst, u32 ratemask, |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1043 | const u8 *ssid, size_t ssid_len, |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1044 | const u8 *ie, size_t ie_len, |
| 1045 | bool directed) |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1046 | { |
| 1047 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1048 | struct sk_buff *skb; |
| 1049 | struct ieee80211_mgmt *mgmt; |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1050 | size_t buf_len; |
| 1051 | u8 *buf; |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1052 | u8 chan; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1053 | |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1054 | /* FIXME: come up with a proper value */ |
| 1055 | buf = kmalloc(200 + ie_len, GFP_KERNEL); |
Joe Perches | d15b845 | 2011-08-29 14:17:31 -0700 | [diff] [blame] | 1056 | if (!buf) |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1057 | return NULL; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1058 | |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1059 | /* |
| 1060 | * Do not send DS Channel parameter for directed probe requests |
| 1061 | * in order to maximize the chance that we get a response. Some |
| 1062 | * badly-behaved APs don't respond when this parameter is included. |
| 1063 | */ |
| 1064 | if (directed) |
| 1065 | chan = 0; |
| 1066 | else |
| 1067 | chan = ieee80211_frequency_to_channel( |
| 1068 | local->hw.conf.channel->center_freq); |
Jouni Malinen | 651b522 | 2010-08-28 19:37:51 +0300 | [diff] [blame] | 1069 | |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1070 | buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len, |
Jouni Malinen | 8dcb200 | 2010-08-28 19:36:10 +0300 | [diff] [blame] | 1071 | local->hw.conf.channel->band, |
Johannes Berg | 85a237f | 2011-07-18 18:08:36 +0200 | [diff] [blame] | 1072 | ratemask, chan); |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1073 | |
| 1074 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
| 1075 | ssid, ssid_len, |
| 1076 | buf, buf_len); |
Johannes Berg | 5b2bbf7 | 2011-11-08 13:04:41 +0100 | [diff] [blame] | 1077 | if (!skb) |
| 1078 | goto out; |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1079 | |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1080 | if (dst) { |
Kalle Valo | 7c12ce8 | 2010-01-05 20:16:44 +0200 | [diff] [blame] | 1081 | mgmt = (struct ieee80211_mgmt *) skb->data; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1082 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 1083 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1084 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1085 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 1086 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
Johannes Berg | 5b2bbf7 | 2011-11-08 13:04:41 +0100 | [diff] [blame] | 1087 | |
| 1088 | out: |
Ming Lei | 145b6d1 | 2010-01-15 21:44:21 +0800 | [diff] [blame] | 1089 | kfree(buf); |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1090 | |
| 1091 | return skb; |
| 1092 | } |
| 1093 | |
| 1094 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
| 1095 | const u8 *ssid, size_t ssid_len, |
Paul Stewart | a806c55 | 2011-06-23 09:00:11 -0800 | [diff] [blame] | 1096 | const u8 *ie, size_t ie_len, |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1097 | u32 ratemask, bool directed, bool no_cck) |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1098 | { |
| 1099 | struct sk_buff *skb; |
| 1100 | |
Johannes Berg | 85a237f | 2011-07-18 18:08:36 +0200 | [diff] [blame] | 1101 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, ssid, ssid_len, |
| 1102 | ie, ie_len, directed); |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1103 | if (skb) { |
| 1104 | if (no_cck) |
| 1105 | IEEE80211_SKB_CB(skb)->flags |= |
| 1106 | IEEE80211_TX_CTL_NO_CCK_RATE; |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 1107 | ieee80211_tx_skb(sdata, skb); |
Rajkumar Manoharan | aad14ce | 2011-09-25 14:53:31 +0530 | [diff] [blame] | 1108 | } |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1109 | } |
| 1110 | |
| 1111 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, |
| 1112 | struct ieee802_11_elems *elems, |
| 1113 | enum ieee80211_band band) |
| 1114 | { |
| 1115 | struct ieee80211_supported_band *sband; |
| 1116 | struct ieee80211_rate *bitrates; |
| 1117 | size_t num_rates; |
| 1118 | u32 supp_rates; |
| 1119 | int i, j; |
| 1120 | sband = local->hw.wiphy->bands[band]; |
| 1121 | |
| 1122 | if (!sband) { |
| 1123 | WARN_ON(1); |
| 1124 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1125 | } |
| 1126 | |
| 1127 | bitrates = sband->bitrates; |
| 1128 | num_rates = sband->n_bitrates; |
| 1129 | supp_rates = 0; |
| 1130 | for (i = 0; i < elems->supp_rates_len + |
| 1131 | elems->ext_supp_rates_len; i++) { |
| 1132 | u8 rate = 0; |
| 1133 | int own_rate; |
| 1134 | if (i < elems->supp_rates_len) |
| 1135 | rate = elems->supp_rates[i]; |
| 1136 | else if (elems->ext_supp_rates) |
| 1137 | rate = elems->ext_supp_rates |
| 1138 | [i - elems->supp_rates_len]; |
| 1139 | own_rate = 5 * (rate & 0x7f); |
| 1140 | for (j = 0; j < num_rates; j++) |
| 1141 | if (bitrates[j].bitrate == own_rate) |
| 1142 | supp_rates |= BIT(j); |
| 1143 | } |
| 1144 | return supp_rates; |
| 1145 | } |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1146 | |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1147 | void ieee80211_stop_device(struct ieee80211_local *local) |
| 1148 | { |
| 1149 | ieee80211_led_radio(local, false); |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 1150 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1151 | |
| 1152 | cancel_work_sync(&local->reconfig_filter); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1153 | |
| 1154 | flush_workqueue(local->workqueue); |
Lennert Buytenhek | 678f415 | 2010-01-10 14:07:53 +0100 | [diff] [blame] | 1155 | drv_stop(local); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 1156 | } |
| 1157 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1158 | int ieee80211_reconfig(struct ieee80211_local *local) |
| 1159 | { |
| 1160 | struct ieee80211_hw *hw = &local->hw; |
| 1161 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1162 | struct sta_info *sta; |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1163 | int res, i; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1164 | |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1165 | #ifdef CONFIG_PM |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1166 | if (local->suspended) |
| 1167 | local->resuming = true; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1168 | |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1169 | if (local->wowlan) { |
| 1170 | local->wowlan = false; |
| 1171 | res = drv_resume(local); |
| 1172 | if (res < 0) { |
| 1173 | local->resuming = false; |
| 1174 | return res; |
| 1175 | } |
| 1176 | if (res == 0) |
| 1177 | goto wake_up; |
| 1178 | WARN_ON(res > 1); |
| 1179 | /* |
| 1180 | * res is 1, which means the driver requested |
| 1181 | * to go through a regular reset on wakeup. |
| 1182 | */ |
| 1183 | } |
| 1184 | #endif |
Johannes Berg | 94f9b97 | 2011-07-14 16:48:54 +0200 | [diff] [blame] | 1185 | /* everything else happens only if HW was up & running */ |
| 1186 | if (!local->open_count) |
| 1187 | goto wake_up; |
| 1188 | |
| 1189 | /* |
| 1190 | * Upon resume hardware can sometimes be goofy due to |
| 1191 | * various platform / driver / bus issues, so restarting |
| 1192 | * the device may at times not work immediately. Propagate |
| 1193 | * the error. |
| 1194 | */ |
| 1195 | res = drv_start(local); |
| 1196 | if (res) { |
| 1197 | WARN(local->suspended, "Hardware became unavailable " |
| 1198 | "upon resume. This could be a software issue " |
| 1199 | "prior to suspend or a hardware issue.\n"); |
| 1200 | return res; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1201 | } |
| 1202 | |
Yogesh Ashok Powar | 7f28197 | 2011-12-30 16:34:25 +0530 | [diff] [blame] | 1203 | /* setup fragmentation threshold */ |
| 1204 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); |
| 1205 | |
| 1206 | /* setup RTS threshold */ |
| 1207 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); |
| 1208 | |
| 1209 | /* reset coverage class */ |
| 1210 | drv_set_coverage_class(local, hw->wiphy->coverage_class); |
| 1211 | |
Johannes Berg | 94f9b97 | 2011-07-14 16:48:54 +0200 | [diff] [blame] | 1212 | ieee80211_led_radio(local, true); |
| 1213 | ieee80211_mod_tpt_led_trig(local, |
| 1214 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); |
| 1215 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1216 | /* add interfaces */ |
| 1217 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1218 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
| 1219 | sdata->vif.type != NL80211_IFTYPE_MONITOR && |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1220 | ieee80211_sdata_running(sdata)) |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 1221 | res = drv_add_interface(local, sdata); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1222 | } |
| 1223 | |
| 1224 | /* add STAs back */ |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1225 | mutex_lock(&local->sta_mtx); |
| 1226 | list_for_each_entry(sta, &local->sta_list, list) { |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1227 | if (sta->uploaded) { |
| 1228 | enum ieee80211_sta_state state; |
| 1229 | |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1230 | for (state = IEEE80211_STA_NOTEXIST; |
| 1231 | state < sta->sta_state - 1; state++) |
| 1232 | WARN_ON(drv_sta_state(local, sta->sdata, sta, |
| 1233 | state, state + 1)); |
| 1234 | } |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1235 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1236 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1237 | |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1238 | /* reconfigure tx conf */ |
Eliad Peller | f6f3def | 2011-09-25 20:06:54 +0300 | [diff] [blame] | 1239 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1240 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
| 1241 | sdata->vif.type == NL80211_IFTYPE_MONITOR || |
| 1242 | !ieee80211_sdata_running(sdata)) |
| 1243 | continue; |
| 1244 | |
| 1245 | for (i = 0; i < hw->queues; i++) |
| 1246 | drv_conf_tx(local, sdata, i, &sdata->tx_conf[i]); |
| 1247 | } |
Eliad Peller | 2683d65 | 2011-07-14 20:29:42 +0300 | [diff] [blame] | 1248 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1249 | /* reconfigure hardware */ |
| 1250 | ieee80211_hw_config(local, ~0); |
| 1251 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1252 | ieee80211_configure_filter(local); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1253 | |
| 1254 | /* Finally also reconfigure all the BSS information */ |
| 1255 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1256 | u32 changed; |
| 1257 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 1258 | if (!ieee80211_sdata_running(sdata)) |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1259 | continue; |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1260 | |
| 1261 | /* common change flags for all interface types */ |
| 1262 | changed = BSS_CHANGED_ERP_CTS_PROT | |
| 1263 | BSS_CHANGED_ERP_PREAMBLE | |
| 1264 | BSS_CHANGED_ERP_SLOT | |
| 1265 | BSS_CHANGED_HT | |
| 1266 | BSS_CHANGED_BASIC_RATES | |
| 1267 | BSS_CHANGED_BEACON_INT | |
| 1268 | BSS_CHANGED_BSSID | |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 1269 | BSS_CHANGED_CQM | |
Eliad Peller | 55de47f | 2011-11-01 15:16:55 +0200 | [diff] [blame] | 1270 | BSS_CHANGED_QOS | |
| 1271 | BSS_CHANGED_IDLE; |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1272 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1273 | switch (sdata->vif.type) { |
| 1274 | case NL80211_IFTYPE_STATION: |
Eliad Peller | 0d392e9 | 2011-12-12 14:10:49 +0200 | [diff] [blame] | 1275 | changed |= BSS_CHANGED_ASSOC | |
| 1276 | BSS_CHANGED_ARP_FILTER; |
Eliad Peller | a7b545f | 2011-02-08 18:43:19 +0200 | [diff] [blame] | 1277 | mutex_lock(&sdata->u.mgd.mtx); |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1278 | ieee80211_bss_info_change_notify(sdata, changed); |
Eliad Peller | a7b545f | 2011-02-08 18:43:19 +0200 | [diff] [blame] | 1279 | mutex_unlock(&sdata->u.mgd.mtx); |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1280 | break; |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1281 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1282 | changed |= BSS_CHANGED_IBSS; |
| 1283 | /* fall through */ |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1284 | case NL80211_IFTYPE_AP: |
Arik Nemtsov | e7979ac | 2011-11-22 19:33:18 +0200 | [diff] [blame] | 1285 | changed |= BSS_CHANGED_SSID; |
| 1286 | |
| 1287 | if (sdata->vif.type == NL80211_IFTYPE_AP) |
| 1288 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
| 1289 | |
Arik Nemtsov | 7827493 | 2011-09-04 11:11:32 +0300 | [diff] [blame] | 1290 | /* fall through */ |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1291 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 1292 | changed |= BSS_CHANGED_BEACON | |
| 1293 | BSS_CHANGED_BEACON_ENABLED; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1294 | ieee80211_bss_info_change_notify(sdata, changed); |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1295 | break; |
| 1296 | case NL80211_IFTYPE_WDS: |
| 1297 | break; |
| 1298 | case NL80211_IFTYPE_AP_VLAN: |
| 1299 | case NL80211_IFTYPE_MONITOR: |
| 1300 | /* ignore virtual */ |
| 1301 | break; |
| 1302 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 1303 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1304 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1305 | case NL80211_IFTYPE_P2P_GO: |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1306 | WARN_ON(1); |
| 1307 | break; |
| 1308 | } |
| 1309 | } |
| 1310 | |
Eyal Shapira | 8e1b23b | 2011-11-09 12:29:06 +0200 | [diff] [blame] | 1311 | ieee80211_recalc_ps(local, -1); |
| 1312 | |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1313 | /* |
Eliad Peller | 6e1b1b2 | 2012-01-26 13:36:05 +0200 | [diff] [blame] | 1314 | * The sta might be in psm against the ap (e.g. because |
| 1315 | * this was the state before a hw restart), so we |
| 1316 | * explicitly send a null packet in order to make sure |
| 1317 | * it'll sync against the ap (and get out of psm). |
| 1318 | */ |
| 1319 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { |
| 1320 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1321 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| 1322 | continue; |
| 1323 | |
| 1324 | ieee80211_send_nullfunc(local, sdata, 0); |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | /* |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1329 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation |
| 1330 | * sessions can be established after a resume. |
| 1331 | * |
| 1332 | * Also tear down aggregation sessions since reconfiguring |
| 1333 | * them in a hardware restart scenario is not easily done |
| 1334 | * right now, and the hardware will have lost information |
| 1335 | * about the sessions, but we and the AP still think they |
| 1336 | * are active. This is really a workaround though. |
| 1337 | */ |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1338 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1339 | mutex_lock(&local->sta_mtx); |
| 1340 | |
| 1341 | list_for_each_entry(sta, &local->sta_list, list) { |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 1342 | ieee80211_sta_tear_down_BA_sessions(sta, true); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 1343 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1344 | } |
Johannes Berg | 2a41905 | 2010-06-10 10:21:29 +0200 | [diff] [blame] | 1345 | |
| 1346 | mutex_unlock(&local->sta_mtx); |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1347 | } |
Wey-Yi Guy | 74e2bd1 | 2010-02-03 09:28:55 -0800 | [diff] [blame] | 1348 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1349 | /* add back keys */ |
| 1350 | list_for_each_entry(sdata, &local->interfaces, list) |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 1351 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1352 | ieee80211_enable_keys(sdata); |
| 1353 | |
Johannes Berg | eecc480 | 2011-05-04 15:37:29 +0200 | [diff] [blame] | 1354 | wake_up: |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1355 | ieee80211_wake_queues_by_reason(hw, |
| 1356 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| 1357 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1358 | /* |
| 1359 | * If this is for hw restart things are still running. |
| 1360 | * We may want to change that later, however. |
| 1361 | */ |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1362 | if (!local->suspended) |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1363 | return 0; |
| 1364 | |
| 1365 | #ifdef CONFIG_PM |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1366 | /* first set suspended false, then resuming */ |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1367 | local->suspended = false; |
Johannes Berg | ceb99fe | 2009-11-19 14:29:39 +0100 | [diff] [blame] | 1368 | mb(); |
| 1369 | local->resuming = false; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1370 | |
| 1371 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1372 | switch(sdata->vif.type) { |
| 1373 | case NL80211_IFTYPE_STATION: |
| 1374 | ieee80211_sta_restart(sdata); |
| 1375 | break; |
| 1376 | case NL80211_IFTYPE_ADHOC: |
| 1377 | ieee80211_ibss_restart(sdata); |
| 1378 | break; |
| 1379 | case NL80211_IFTYPE_MESH_POINT: |
| 1380 | ieee80211_mesh_restart(sdata); |
| 1381 | break; |
| 1382 | default: |
| 1383 | break; |
| 1384 | } |
| 1385 | } |
| 1386 | |
Johannes Berg | 26d5953 | 2011-04-01 13:52:48 +0200 | [diff] [blame] | 1387 | mod_timer(&local->sta_cleanup, jiffies + 1); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1388 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1389 | mutex_lock(&local->sta_mtx); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1390 | list_for_each_entry(sta, &local->sta_list, list) |
| 1391 | mesh_plink_restart(sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1392 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1393 | #else |
| 1394 | WARN_ON(1); |
| 1395 | #endif |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1396 | return 0; |
| 1397 | } |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1398 | |
Johannes Berg | 95acac6 | 2011-07-12 12:30:59 +0200 | [diff] [blame] | 1399 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
| 1400 | { |
| 1401 | struct ieee80211_sub_if_data *sdata; |
| 1402 | struct ieee80211_local *local; |
| 1403 | struct ieee80211_key *key; |
| 1404 | |
| 1405 | if (WARN_ON(!vif)) |
| 1406 | return; |
| 1407 | |
| 1408 | sdata = vif_to_sdata(vif); |
| 1409 | local = sdata->local; |
| 1410 | |
| 1411 | if (WARN_ON(!local->resuming)) |
| 1412 | return; |
| 1413 | |
| 1414 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) |
| 1415 | return; |
| 1416 | |
| 1417 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; |
| 1418 | |
| 1419 | mutex_lock(&local->key_mtx); |
| 1420 | list_for_each_entry(key, &sdata->key_list, list) |
| 1421 | key->flags |= KEY_FLAG_TAINTED; |
| 1422 | mutex_unlock(&local->key_mtx); |
| 1423 | } |
| 1424 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); |
| 1425 | |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1426 | static int check_mgd_smps(struct ieee80211_if_managed *ifmgd, |
| 1427 | enum ieee80211_smps_mode *smps_mode) |
| 1428 | { |
| 1429 | if (ifmgd->associated) { |
| 1430 | *smps_mode = ifmgd->ap_smps; |
| 1431 | |
| 1432 | if (*smps_mode == IEEE80211_SMPS_AUTOMATIC) { |
| 1433 | if (ifmgd->powersave) |
| 1434 | *smps_mode = IEEE80211_SMPS_DYNAMIC; |
| 1435 | else |
| 1436 | *smps_mode = IEEE80211_SMPS_OFF; |
| 1437 | } |
| 1438 | |
| 1439 | return 1; |
| 1440 | } |
| 1441 | |
| 1442 | return 0; |
| 1443 | } |
| 1444 | |
| 1445 | /* must hold iflist_mtx */ |
Johannes Berg | 025e6be | 2010-10-05 10:41:47 +0200 | [diff] [blame] | 1446 | void ieee80211_recalc_smps(struct ieee80211_local *local) |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1447 | { |
| 1448 | struct ieee80211_sub_if_data *sdata; |
| 1449 | enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_OFF; |
| 1450 | int count = 0; |
| 1451 | |
Johannes Berg | 46a5eba | 2010-09-15 13:28:15 +0200 | [diff] [blame] | 1452 | lockdep_assert_held(&local->iflist_mtx); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1453 | |
| 1454 | /* |
| 1455 | * This function could be improved to handle multiple |
| 1456 | * interfaces better, but right now it makes any |
| 1457 | * non-station interfaces force SM PS to be turned |
| 1458 | * off. If there are multiple station interfaces it |
| 1459 | * could also use the best possible mode, e.g. if |
| 1460 | * one is in static and the other in dynamic then |
| 1461 | * dynamic is ok. |
| 1462 | */ |
| 1463 | |
| 1464 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 26a5845 | 2010-08-27 12:35:55 +0200 | [diff] [blame] | 1465 | if (!ieee80211_sdata_running(sdata)) |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1466 | continue; |
| 1467 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| 1468 | goto set; |
Johannes Berg | 025e6be | 2010-10-05 10:41:47 +0200 | [diff] [blame] | 1469 | |
| 1470 | count += check_mgd_smps(&sdata->u.mgd, &smps_mode); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1471 | |
| 1472 | if (count > 1) { |
| 1473 | smps_mode = IEEE80211_SMPS_OFF; |
| 1474 | break; |
| 1475 | } |
| 1476 | } |
| 1477 | |
| 1478 | if (smps_mode == local->smps_mode) |
| 1479 | return; |
| 1480 | |
| 1481 | set: |
| 1482 | local->smps_mode = smps_mode; |
| 1483 | /* changed flag is auto-detected for this */ |
| 1484 | ieee80211_hw_config(local, 0); |
| 1485 | } |
Johannes Berg | 8e664fb | 2009-12-23 13:15:38 +0100 | [diff] [blame] | 1486 | |
| 1487 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
| 1488 | { |
| 1489 | int i; |
| 1490 | |
| 1491 | for (i = 0; i < n_ids; i++) |
| 1492 | if (ids[i] == id) |
| 1493 | return true; |
| 1494 | return false; |
| 1495 | } |
| 1496 | |
| 1497 | /** |
| 1498 | * ieee80211_ie_split - split an IE buffer according to ordering |
| 1499 | * |
| 1500 | * @ies: the IE buffer |
| 1501 | * @ielen: the length of the IE buffer |
| 1502 | * @ids: an array with element IDs that are allowed before |
| 1503 | * the split |
| 1504 | * @n_ids: the size of the element ID array |
| 1505 | * @offset: offset where to start splitting in the buffer |
| 1506 | * |
| 1507 | * This function splits an IE buffer by updating the @offset |
| 1508 | * variable to point to the location where the buffer should be |
| 1509 | * split. |
| 1510 | * |
| 1511 | * It assumes that the given IE buffer is well-formed, this |
| 1512 | * has to be guaranteed by the caller! |
| 1513 | * |
| 1514 | * It also assumes that the IEs in the buffer are ordered |
| 1515 | * correctly, if not the result of using this function will not |
| 1516 | * be ordered correctly either, i.e. it does no reordering. |
| 1517 | * |
| 1518 | * The function returns the offset where the next part of the |
| 1519 | * buffer starts, which may be @ielen if the entire (remainder) |
| 1520 | * of the buffer should be used. |
| 1521 | */ |
| 1522 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, |
| 1523 | const u8 *ids, int n_ids, size_t offset) |
| 1524 | { |
| 1525 | size_t pos = offset; |
| 1526 | |
| 1527 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) |
| 1528 | pos += 2 + ies[pos + 1]; |
| 1529 | |
| 1530 | return pos; |
| 1531 | } |
| 1532 | |
| 1533 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
| 1534 | { |
| 1535 | size_t pos = offset; |
| 1536 | |
| 1537 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) |
| 1538 | pos += 2 + ies[pos + 1]; |
| 1539 | |
| 1540 | return pos; |
| 1541 | } |
Meenakshi Venkataraman | 615f7b9 | 2011-07-08 08:46:22 -0700 | [diff] [blame] | 1542 | |
| 1543 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, |
| 1544 | int rssi_min_thold, |
| 1545 | int rssi_max_thold) |
| 1546 | { |
| 1547 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); |
| 1548 | |
| 1549 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
| 1550 | return; |
| 1551 | |
| 1552 | /* |
| 1553 | * Scale up threshold values before storing it, as the RSSI averaging |
| 1554 | * algorithm uses a scaled up value as well. Change this scaling |
| 1555 | * factor if the RSSI averaging algorithm changes. |
| 1556 | */ |
| 1557 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; |
| 1558 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; |
| 1559 | } |
| 1560 | |
| 1561 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, |
| 1562 | int rssi_min_thold, |
| 1563 | int rssi_max_thold) |
| 1564 | { |
| 1565 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1566 | |
| 1567 | WARN_ON(rssi_min_thold == rssi_max_thold || |
| 1568 | rssi_min_thold > rssi_max_thold); |
| 1569 | |
| 1570 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, |
| 1571 | rssi_max_thold); |
| 1572 | } |
| 1573 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); |
| 1574 | |
| 1575 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) |
| 1576 | { |
| 1577 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1578 | |
| 1579 | _ieee80211_enable_rssi_reports(sdata, 0, 0); |
| 1580 | } |
| 1581 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1582 | |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1583 | 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] | 1584 | u16 cap) |
| 1585 | { |
| 1586 | __le16 tmp; |
| 1587 | |
| 1588 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 1589 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 1590 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 1591 | |
| 1592 | /* capability flags */ |
| 1593 | tmp = cpu_to_le16(cap); |
| 1594 | memcpy(pos, &tmp, sizeof(u16)); |
| 1595 | pos += sizeof(u16); |
| 1596 | |
| 1597 | /* AMPDU parameters */ |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1598 | *pos++ = ht_cap->ampdu_factor | |
| 1599 | (ht_cap->ampdu_density << |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1600 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
| 1601 | |
| 1602 | /* MCS set */ |
Ben Greear | ef96a842 | 2011-11-18 11:32:00 -0800 | [diff] [blame] | 1603 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
| 1604 | pos += sizeof(ht_cap->mcs); |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1605 | |
| 1606 | /* extended capabilities */ |
| 1607 | pos += sizeof(__le16); |
| 1608 | |
| 1609 | /* BF capabilities */ |
| 1610 | pos += sizeof(__le32); |
| 1611 | |
| 1612 | /* antenna selection */ |
| 1613 | pos += sizeof(u8); |
| 1614 | |
| 1615 | return pos; |
| 1616 | } |
| 1617 | |
Mahesh Palivela | 5e89ac7 | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1618 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
| 1619 | u32 cap) |
| 1620 | { |
| 1621 | __le32 tmp; |
| 1622 | |
| 1623 | *pos++ = WLAN_EID_VHT_CAPABILITY; |
Mahesh Palivela | 8d200ae | 2012-10-10 11:25:40 +0000 | [diff] [blame] | 1624 | *pos++ = sizeof(struct ieee80211_vht_cap); |
| 1625 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); |
Mahesh Palivela | 5e89ac7 | 2012-07-02 11:25:12 +0000 | [diff] [blame] | 1626 | |
| 1627 | /* capability flags */ |
| 1628 | tmp = cpu_to_le32(cap); |
| 1629 | memcpy(pos, &tmp, sizeof(u32)); |
| 1630 | pos += sizeof(u32); |
| 1631 | |
| 1632 | /* VHT MCS set */ |
| 1633 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); |
| 1634 | pos += sizeof(vht_cap->vht_mcs); |
| 1635 | |
| 1636 | return pos; |
| 1637 | } |
| 1638 | |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1639 | u8 *ieee80211_ie_build_ht_info(u8 *pos, |
| 1640 | struct ieee80211_sta_ht_cap *ht_cap, |
| 1641 | struct ieee80211_channel *channel, |
| 1642 | enum nl80211_channel_type channel_type) |
| 1643 | { |
| 1644 | struct ieee80211_ht_info *ht_info; |
| 1645 | /* Build HT Information */ |
| 1646 | *pos++ = WLAN_EID_HT_INFORMATION; |
| 1647 | *pos++ = sizeof(struct ieee80211_ht_info); |
| 1648 | ht_info = (struct ieee80211_ht_info *)pos; |
| 1649 | ht_info->control_chan = |
| 1650 | ieee80211_frequency_to_channel(channel->center_freq); |
| 1651 | switch (channel_type) { |
| 1652 | case NL80211_CHAN_HT40MINUS: |
| 1653 | ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
| 1654 | break; |
| 1655 | case NL80211_CHAN_HT40PLUS: |
| 1656 | ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
| 1657 | break; |
| 1658 | case NL80211_CHAN_HT20: |
| 1659 | default: |
| 1660 | ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
| 1661 | break; |
| 1662 | } |
| 1663 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) |
| 1664 | ht_info->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
Simon Wunderlich | ff3cc5f | 2011-11-30 16:56:33 +0100 | [diff] [blame] | 1665 | |
| 1666 | /* |
| 1667 | * Note: According to 802.11n-2009 9.13.3.1, HT Protection field and |
| 1668 | * RIFS Mode are reserved in IBSS mode, therefore keep them at 0 |
| 1669 | */ |
Alexander Simon | 42e7aa7 | 2011-10-26 14:47:26 -0700 | [diff] [blame] | 1670 | ht_info->operation_mode = 0x0000; |
| 1671 | ht_info->stbc_param = 0x0000; |
| 1672 | |
| 1673 | /* It seems that Basic MCS set and Supported MCS set |
| 1674 | are identical for the first 10 bytes */ |
| 1675 | memset(&ht_info->basic_set, 0, 16); |
| 1676 | memcpy(&ht_info->basic_set, &ht_cap->mcs, 10); |
| 1677 | |
| 1678 | return pos + sizeof(struct ieee80211_ht_info); |
| 1679 | } |
| 1680 | |
| 1681 | enum nl80211_channel_type |
| 1682 | ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info) |
| 1683 | { |
| 1684 | enum nl80211_channel_type channel_type; |
| 1685 | |
| 1686 | if (!ht_info) |
| 1687 | return NL80211_CHAN_NO_HT; |
| 1688 | |
| 1689 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
| 1690 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
| 1691 | channel_type = NL80211_CHAN_HT20; |
| 1692 | break; |
| 1693 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| 1694 | channel_type = NL80211_CHAN_HT40PLUS; |
| 1695 | break; |
| 1696 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| 1697 | channel_type = NL80211_CHAN_HT40MINUS; |
| 1698 | break; |
| 1699 | default: |
| 1700 | channel_type = NL80211_CHAN_NO_HT; |
| 1701 | } |
| 1702 | |
| 1703 | return channel_type; |
| 1704 | } |
| 1705 | |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 1706 | int ieee80211_add_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb) |
| 1707 | { |
| 1708 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1709 | struct ieee80211_local *local = sdata->local; |
| 1710 | struct ieee80211_supported_band *sband; |
| 1711 | int rate; |
| 1712 | u8 i, rates, *pos; |
| 1713 | |
| 1714 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1715 | rates = sband->n_bitrates; |
| 1716 | if (rates > 8) |
| 1717 | rates = 8; |
| 1718 | |
| 1719 | if (skb_tailroom(skb) < rates + 2) |
| 1720 | return -ENOMEM; |
| 1721 | |
| 1722 | pos = skb_put(skb, rates + 2); |
| 1723 | *pos++ = WLAN_EID_SUPP_RATES; |
| 1724 | *pos++ = rates; |
| 1725 | for (i = 0; i < rates; i++) { |
| 1726 | rate = sband->bitrates[i].bitrate; |
| 1727 | *pos++ = (u8) (rate / 5); |
| 1728 | } |
| 1729 | |
| 1730 | return 0; |
| 1731 | } |
| 1732 | |
| 1733 | int ieee80211_add_ext_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb) |
| 1734 | { |
| 1735 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| 1736 | struct ieee80211_local *local = sdata->local; |
| 1737 | struct ieee80211_supported_band *sband; |
| 1738 | int rate; |
| 1739 | u8 i, exrates, *pos; |
| 1740 | |
| 1741 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1742 | exrates = sband->n_bitrates; |
| 1743 | if (exrates > 8) |
| 1744 | exrates -= 8; |
| 1745 | else |
| 1746 | exrates = 0; |
| 1747 | |
| 1748 | if (skb_tailroom(skb) < exrates + 2) |
| 1749 | return -ENOMEM; |
| 1750 | |
| 1751 | if (exrates) { |
| 1752 | pos = skb_put(skb, exrates + 2); |
| 1753 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 1754 | *pos++ = exrates; |
| 1755 | for (i = 8; i < sband->n_bitrates; i++) { |
| 1756 | rate = sband->bitrates[i].bitrate; |
| 1757 | *pos++ = (u8) (rate / 5); |
| 1758 | } |
| 1759 | } |
| 1760 | return 0; |
| 1761 | } |