Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * BSS client mode implementation |
| 3 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> |
| 4 | * Copyright 2004, Instant802 Networks, Inc. |
| 5 | * Copyright 2005, Devicescape Software, Inc. |
| 6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| 7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
| 14 | /* TODO: |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 15 | * order BSS list by RSSI(?) ("quality of AP") |
| 16 | * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, |
| 17 | * SSID) |
| 18 | */ |
Geert Uytterhoeven | 5b323ed | 2007-05-08 18:40:27 -0700 | [diff] [blame] | 19 | #include <linux/delay.h> |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 20 | #include <linux/if_ether.h> |
| 21 | #include <linux/skbuff.h> |
| 22 | #include <linux/netdevice.h> |
| 23 | #include <linux/if_arp.h> |
| 24 | #include <linux/wireless.h> |
| 25 | #include <linux/random.h> |
| 26 | #include <linux/etherdevice.h> |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 27 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 28 | #include <net/iw_handler.h> |
| 29 | #include <asm/types.h> |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 30 | |
| 31 | #include <net/mac80211.h> |
| 32 | #include "ieee80211_i.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 33 | #include "rate.h" |
| 34 | #include "led.h" |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 35 | #include "mesh.h" |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 36 | |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 37 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 38 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
| 39 | #define IEEE80211_AUTH_MAX_TRIES 3 |
| 40 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) |
| 41 | #define IEEE80211_ASSOC_MAX_TRIES 3 |
| 42 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 43 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 44 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
| 45 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) |
| 46 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) |
| 47 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) |
Dan Williams | 872ba53 | 2008-06-04 13:59:34 -0400 | [diff] [blame] | 48 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 49 | |
| 50 | #define IEEE80211_PROBE_DELAY (HZ / 33) |
| 51 | #define IEEE80211_CHANNEL_TIME (HZ / 33) |
| 52 | #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) |
| 53 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) |
| 54 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) |
| 55 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 56 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 57 | |
| 58 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 |
| 59 | |
| 60 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 61 | #define ERP_INFO_USE_PROTECTION BIT(1) |
| 62 | |
Johannes Berg | 9c80d3d | 2008-09-08 15:41:59 +0200 | [diff] [blame] | 63 | /* mgmt header + 1 byte category code */ |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 64 | #define IEEE80211_MIN_ACTION_SIZE (24 + 1) |
| 65 | |
| 66 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 |
| 67 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C |
| 68 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 69 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
| 70 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 71 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 72 | /* next values represent the buffer size for A-MPDU frame. |
| 73 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ |
| 74 | #define IEEE80211_MIN_AMPDU_BUF 0x8 |
| 75 | #define IEEE80211_MAX_AMPDU_BUF 0x40 |
| 76 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 77 | static void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 78 | u8 *ssid, size_t ssid_len); |
| 79 | static struct ieee80211_sta_bss * |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 80 | ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 81 | u8 *ssid, u8 ssid_len); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 82 | static void ieee80211_rx_bss_put(struct ieee80211_local *local, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 83 | struct ieee80211_sta_bss *bss); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 84 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 85 | struct ieee80211_if_sta *ifsta); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 86 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata); |
| 87 | static int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 88 | u8 *ssid, size_t ssid_len); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 89 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 90 | struct ieee80211_if_sta *ifsta); |
Adrian Bunk | 712590d | 2008-04-21 11:47:51 +0300 | [diff] [blame] | 91 | static void sta_rx_agg_session_timer_expired(unsigned long data); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 92 | |
| 93 | |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 94 | static u8 * ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie) |
| 95 | { |
| 96 | u8 *end, *pos; |
| 97 | |
| 98 | pos = bss->ies; |
| 99 | if (pos == NULL) |
| 100 | return NULL; |
| 101 | end = pos + bss->ies_len; |
| 102 | |
| 103 | while (pos + 1 < end) { |
| 104 | if (pos + 2 + pos[1] > end) |
| 105 | break; |
| 106 | if (pos[0] == ie) |
| 107 | return pos; |
| 108 | pos += 2 + pos[1]; |
| 109 | } |
| 110 | |
| 111 | return NULL; |
| 112 | } |
| 113 | |
| 114 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 115 | static int ecw2cw(int ecw) |
| 116 | { |
Johannes Berg | ac2bf32 | 2008-02-14 00:30:35 +0100 | [diff] [blame] | 117 | return (1 << ecw) - 1; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 118 | } |
| 119 | |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 120 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 121 | static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 122 | struct ieee80211_sta_bss *bss, |
| 123 | int ibss) |
| 124 | { |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 125 | struct ieee80211_local *local = sdata->local; |
| 126 | int i, have_higher_than_11mbit = 0; |
| 127 | |
| 128 | |
| 129 | /* cf. IEEE 802.11 9.2.12 */ |
| 130 | for (i = 0; i < bss->supp_rates_len; i++) |
| 131 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) |
| 132 | have_higher_than_11mbit = 1; |
| 133 | |
| 134 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 135 | have_higher_than_11mbit) |
| 136 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 137 | else |
| 138 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
| 139 | |
| 140 | |
| 141 | if (local->ops->conf_tx) { |
| 142 | struct ieee80211_tx_queue_params qparam; |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 143 | |
| 144 | memset(&qparam, 0, sizeof(qparam)); |
| 145 | |
| 146 | qparam.aifs = 2; |
| 147 | |
| 148 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 149 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) |
| 150 | qparam.cw_min = 31; |
| 151 | else |
| 152 | qparam.cw_min = 15; |
| 153 | |
| 154 | qparam.cw_max = 1023; |
| 155 | qparam.txop = 0; |
| 156 | |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 157 | for (i = 0; i < local_to_hw(local)->queues; i++) |
| 158 | local->ops->conf_tx(local_to_hw(local), i, &qparam); |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 159 | } |
| 160 | } |
| 161 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 162 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 163 | struct ieee80211_if_sta *ifsta, |
| 164 | u8 *wmm_param, size_t wmm_param_len) |
| 165 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 166 | struct ieee80211_tx_queue_params params; |
| 167 | size_t left; |
| 168 | int count; |
| 169 | u8 *pos; |
| 170 | |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 171 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
| 172 | return; |
| 173 | |
| 174 | if (!wmm_param) |
| 175 | return; |
| 176 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 177 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
| 178 | return; |
| 179 | count = wmm_param[6] & 0x0f; |
| 180 | if (count == ifsta->wmm_last_param_set) |
| 181 | return; |
| 182 | ifsta->wmm_last_param_set = count; |
| 183 | |
| 184 | pos = wmm_param + 8; |
| 185 | left = wmm_param_len - 8; |
| 186 | |
| 187 | memset(¶ms, 0, sizeof(params)); |
| 188 | |
| 189 | if (!local->ops->conf_tx) |
| 190 | return; |
| 191 | |
| 192 | local->wmm_acm = 0; |
| 193 | for (; left >= 4; left -= 4, pos += 4) { |
| 194 | int aci = (pos[0] >> 5) & 0x03; |
| 195 | int acm = (pos[0] >> 4) & 0x01; |
| 196 | int queue; |
| 197 | |
| 198 | switch (aci) { |
| 199 | case 1: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 200 | queue = 3; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 201 | if (acm) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 202 | local->wmm_acm |= BIT(0) | BIT(3); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 203 | break; |
| 204 | case 2: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 205 | queue = 1; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 206 | if (acm) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 207 | local->wmm_acm |= BIT(4) | BIT(5); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 208 | break; |
| 209 | case 3: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 210 | queue = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 211 | if (acm) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 212 | local->wmm_acm |= BIT(6) | BIT(7); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 213 | break; |
| 214 | case 0: |
| 215 | default: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 216 | queue = 2; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 217 | if (acm) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 218 | local->wmm_acm |= BIT(1) | BIT(2); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 219 | break; |
| 220 | } |
| 221 | |
| 222 | params.aifs = pos[0] & 0x0f; |
| 223 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); |
| 224 | params.cw_min = ecw2cw(pos[1] & 0x0f); |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 225 | params.txop = get_unaligned_le16(pos + 2); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 226 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 227 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 228 | "cWmin=%d cWmax=%d txop=%d\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 229 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 230 | params.cw_max, params.txop); |
| 231 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 232 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
| 233 | * AC for now) */ |
| 234 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { |
| 235 | printk(KERN_DEBUG "%s: failed to set TX queue " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 236 | "parameters for queue %d\n", local->mdev->name, queue); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 237 | } |
| 238 | } |
| 239 | } |
| 240 | |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 241 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
| 242 | bool use_protection, |
| 243 | bool use_short_preamble) |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 244 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 245 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 246 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 247 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 248 | DECLARE_MAC_BUF(mac); |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 249 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 250 | u32 changed = 0; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 251 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 252 | if (use_protection != bss_conf->use_cts_prot) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 253 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 254 | if (net_ratelimit()) { |
| 255 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 256 | "%s)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 257 | sdata->dev->name, |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 258 | use_protection ? "enabled" : "disabled", |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 259 | print_mac(mac, ifsta->bssid)); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 260 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 261 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 262 | bss_conf->use_cts_prot = use_protection; |
| 263 | changed |= BSS_CHANGED_ERP_CTS_PROT; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 264 | } |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 265 | |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 266 | if (use_short_preamble != bss_conf->use_short_preamble) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 267 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 268 | if (net_ratelimit()) { |
| 269 | printk(KERN_DEBUG "%s: switched to %s barker preamble" |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 270 | " (BSSID=%s)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 271 | sdata->dev->name, |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 272 | use_short_preamble ? "short" : "long", |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 273 | print_mac(mac, ifsta->bssid)); |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 274 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 275 | #endif |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 276 | bss_conf->use_short_preamble = use_short_preamble; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 277 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 278 | } |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 279 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 280 | return changed; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 281 | } |
| 282 | |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 283 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
| 284 | u8 erp_value) |
| 285 | { |
| 286 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; |
| 287 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; |
| 288 | |
| 289 | return ieee80211_handle_protect_preamb(sdata, |
| 290 | use_protection, use_short_preamble); |
| 291 | } |
| 292 | |
| 293 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
| 294 | struct ieee80211_sta_bss *bss) |
| 295 | { |
| 296 | u32 changed = 0; |
| 297 | |
| 298 | if (bss->has_erp_value) |
| 299 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); |
| 300 | else { |
| 301 | u16 capab = bss->capability; |
| 302 | changed |= ieee80211_handle_protect_preamb(sdata, false, |
| 303 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); |
| 304 | } |
| 305 | |
| 306 | return changed; |
| 307 | } |
| 308 | |
Ron Rindjunsky | c715350 | 2007-11-26 16:14:31 +0200 | [diff] [blame] | 309 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
| 310 | struct ieee80211_ht_info *ht_info) |
| 311 | { |
| 312 | |
| 313 | if (ht_info == NULL) |
| 314 | return -EINVAL; |
| 315 | |
| 316 | memset(ht_info, 0, sizeof(*ht_info)); |
| 317 | |
| 318 | if (ht_cap_ie) { |
| 319 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; |
| 320 | |
| 321 | ht_info->ht_supported = 1; |
| 322 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); |
| 323 | ht_info->ampdu_factor = |
| 324 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; |
| 325 | ht_info->ampdu_density = |
| 326 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; |
| 327 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); |
| 328 | } else |
| 329 | ht_info->ht_supported = 0; |
| 330 | |
| 331 | return 0; |
| 332 | } |
| 333 | |
| 334 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( |
| 335 | struct ieee80211_ht_addt_info *ht_add_info_ie, |
| 336 | struct ieee80211_ht_bss_info *bss_info) |
| 337 | { |
| 338 | if (bss_info == NULL) |
| 339 | return -EINVAL; |
| 340 | |
| 341 | memset(bss_info, 0, sizeof(*bss_info)); |
| 342 | |
| 343 | if (ht_add_info_ie) { |
| 344 | u16 op_mode; |
| 345 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); |
| 346 | |
| 347 | bss_info->primary_channel = ht_add_info_ie->control_chan; |
| 348 | bss_info->bss_cap = ht_add_info_ie->ht_param; |
| 349 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); |
| 350 | } |
| 351 | |
| 352 | return 0; |
| 353 | } |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 354 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 355 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 356 | struct ieee80211_if_sta *ifsta) |
| 357 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 358 | union iwreq_data wrqu; |
| 359 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 360 | if (ifsta->assocreq_ies) { |
Jouni Malinen | 087d833 | 2008-08-19 10:54:32 +0300 | [diff] [blame] | 361 | memset(&wrqu, 0, sizeof(wrqu)); |
| 362 | wrqu.data.length = ifsta->assocreq_ies_len; |
David S. Miller | b171e19 | 2008-08-29 23:06:00 -0700 | [diff] [blame] | 363 | wireless_send_event(sdata->dev, IWEVASSOCREQIE, &wrqu, |
Jouni Malinen | 087d833 | 2008-08-19 10:54:32 +0300 | [diff] [blame] | 364 | ifsta->assocreq_ies); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 365 | } |
| 366 | if (ifsta->assocresp_ies) { |
Jouni Malinen | 087d833 | 2008-08-19 10:54:32 +0300 | [diff] [blame] | 367 | memset(&wrqu, 0, sizeof(wrqu)); |
| 368 | wrqu.data.length = ifsta->assocresp_ies_len; |
David S. Miller | b171e19 | 2008-08-29 23:06:00 -0700 | [diff] [blame] | 369 | wireless_send_event(sdata->dev, IWEVASSOCRESPIE, &wrqu, |
Jouni Malinen | 087d833 | 2008-08-19 10:54:32 +0300 | [diff] [blame] | 370 | ifsta->assocresp_ies); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 371 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 375 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 376 | struct ieee80211_if_sta *ifsta, |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 377 | bool assoc) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 378 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 379 | struct ieee80211_local *local = sdata->local; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 380 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 381 | union iwreq_data wrqu; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 382 | u32 changed = BSS_CHANGED_ASSOC; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 383 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 384 | if (assoc) { |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 385 | struct ieee80211_sta_bss *bss; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 386 | |
| 387 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
| 388 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 389 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 390 | return; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 391 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 392 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 393 | conf->channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 394 | ifsta->ssid, ifsta->ssid_len); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 395 | if (bss) { |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 396 | /* set timing information */ |
| 397 | sdata->bss_conf.beacon_int = bss->beacon_int; |
| 398 | sdata->bss_conf.timestamp = bss->timestamp; |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 399 | sdata->bss_conf.dtim_period = bss->dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 400 | |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 401 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 402 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 403 | ieee80211_rx_bss_put(local, bss); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 404 | } |
| 405 | |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 406 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
| 407 | changed |= BSS_CHANGED_HT; |
| 408 | sdata->bss_conf.assoc_ht = 1; |
| 409 | sdata->bss_conf.ht_conf = &conf->ht_conf; |
| 410 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; |
| 411 | } |
| 412 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 413 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 414 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
| 415 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 416 | ieee80211_sta_send_associnfo(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 417 | } else { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 418 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 419 | changed |= ieee80211_reset_erp_info(sdata); |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 420 | |
| 421 | sdata->bss_conf.assoc_ht = 0; |
| 422 | sdata->bss_conf.ht_conf = NULL; |
| 423 | sdata->bss_conf.ht_bss_conf = NULL; |
| 424 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 425 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
| 426 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 427 | ifsta->last_probe = jiffies; |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 428 | ieee80211_led_assoc(local, assoc); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 429 | |
Tomas Winkler | b220525 | 2008-01-27 16:18:22 +0200 | [diff] [blame] | 430 | sdata->bss_conf.assoc = assoc; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 431 | ieee80211_bss_info_change_notify(sdata, changed); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 432 | |
| 433 | if (assoc) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 434 | netif_carrier_on(sdata->dev); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 435 | |
Reinette Chatre | 41a7be4 | 2008-04-03 16:08:49 -0700 | [diff] [blame] | 436 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 437 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 438 | } |
| 439 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 440 | void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 441 | int encrypt) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 442 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 443 | skb->dev = sdata->local->mdev; |
| 444 | skb_set_mac_header(skb, 0); |
| 445 | skb_set_network_header(skb, 0); |
| 446 | skb_set_transport_header(skb, 0); |
| 447 | |
Johannes Berg | d0f0980 | 2008-07-29 11:32:07 +0200 | [diff] [blame] | 448 | skb->iif = sdata->dev->ifindex; |
| 449 | skb->do_not_encrypt = !encrypt; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 450 | |
| 451 | dev_queue_xmit(skb); |
| 452 | } |
| 453 | |
| 454 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 455 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 456 | struct ieee80211_if_sta *ifsta, |
| 457 | int transaction, u8 *extra, size_t extra_len, |
| 458 | int encrypt) |
| 459 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 460 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 461 | struct sk_buff *skb; |
| 462 | struct ieee80211_mgmt *mgmt; |
| 463 | |
| 464 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 465 | sizeof(*mgmt) + 6 + extra_len); |
| 466 | if (!skb) { |
| 467 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 468 | "frame\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 469 | return; |
| 470 | } |
| 471 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 472 | |
| 473 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 474 | memset(mgmt, 0, 24 + 6); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 475 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 476 | IEEE80211_STYPE_AUTH); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 477 | if (encrypt) |
| 478 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 479 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 480 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 481 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 482 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); |
| 483 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
| 484 | ifsta->auth_transaction = transaction + 1; |
| 485 | mgmt->u.auth.status_code = cpu_to_le16(0); |
| 486 | if (extra) |
| 487 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
| 488 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 489 | ieee80211_sta_tx(sdata, skb, encrypt); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 490 | } |
| 491 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 492 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
| 493 | struct ieee80211_if_sta *ifsta) |
| 494 | { |
| 495 | DECLARE_MAC_BUF(mac); |
| 496 | |
| 497 | ifsta->direct_probe_tries++; |
| 498 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { |
| 499 | printk(KERN_DEBUG "%s: direct probe to AP %s timed out\n", |
| 500 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
| 501 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
| 502 | return; |
| 503 | } |
| 504 | |
| 505 | printk(KERN_DEBUG "%s: direct probe to AP %s try %d\n", |
| 506 | sdata->dev->name, print_mac(mac, ifsta->bssid), |
| 507 | ifsta->direct_probe_tries); |
| 508 | |
| 509 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 510 | |
| 511 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
| 512 | |
| 513 | /* Direct probe is sent to broadcast address as some APs |
| 514 | * will not answer to direct packet in unassociated state. |
| 515 | */ |
| 516 | ieee80211_send_probe_req(sdata, NULL, |
| 517 | ifsta->ssid, ifsta->ssid_len); |
| 518 | |
| 519 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 520 | } |
| 521 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 522 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 523 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 524 | struct ieee80211_if_sta *ifsta) |
| 525 | { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 526 | DECLARE_MAC_BUF(mac); |
| 527 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 528 | ifsta->auth_tries++; |
| 529 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 530 | printk(KERN_DEBUG "%s: authentication with AP %s" |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 531 | " timed out\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 532 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 533 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 534 | return; |
| 535 | } |
| 536 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 537 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 538 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 539 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 540 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 541 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 542 | |
| 543 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 544 | } |
| 545 | |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 546 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
| 547 | struct ieee80211_supported_band *sband, |
| 548 | u64 *rates) |
| 549 | { |
| 550 | int i, j, count; |
| 551 | *rates = 0; |
| 552 | count = 0; |
| 553 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 554 | int rate = (bss->supp_rates[i] & 0x7F) * 5; |
| 555 | |
| 556 | for (j = 0; j < sband->n_bitrates; j++) |
| 557 | if (sband->bitrates[j].bitrate == rate) { |
| 558 | *rates |= BIT(j); |
| 559 | count++; |
| 560 | break; |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | return count; |
| 565 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 566 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 567 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 568 | struct ieee80211_if_sta *ifsta) |
| 569 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 570 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 571 | struct sk_buff *skb; |
| 572 | struct ieee80211_mgmt *mgmt; |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 573 | u8 *pos, *ies, *ht_add_ie; |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 574 | int i, len, count, rates_len, supp_rates_len; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 575 | u16 capab; |
| 576 | struct ieee80211_sta_bss *bss; |
| 577 | int wmm = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 578 | struct ieee80211_supported_band *sband; |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 579 | u64 rates = 0; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 580 | |
| 581 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 582 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + |
| 583 | ifsta->ssid_len); |
| 584 | if (!skb) { |
| 585 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 586 | "frame\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 587 | return; |
| 588 | } |
| 589 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 590 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 591 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 592 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 593 | capab = ifsta->capab; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 594 | |
| 595 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { |
| 596 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) |
| 597 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
| 598 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) |
| 599 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 600 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 601 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 602 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 603 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 604 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 605 | if (bss) { |
| 606 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) |
| 607 | capab |= WLAN_CAPABILITY_PRIVACY; |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 608 | if (bss->wmm_used) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 609 | wmm = 1; |
Helmut Schaa | 0d580a7 | 2008-05-20 09:56:37 +0200 | [diff] [blame] | 610 | |
| 611 | /* get all rates supported by the device and the AP as |
| 612 | * some APs don't like getting a superset of their rates |
| 613 | * in the association request (e.g. D-Link DAP 1353 in |
| 614 | * b-only mode) */ |
| 615 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); |
| 616 | |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 617 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
| 618 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
| 619 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
| 620 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 621 | ieee80211_rx_bss_put(local, bss); |
Helmut Schaa | 0d580a7 | 2008-05-20 09:56:37 +0200 | [diff] [blame] | 622 | } else { |
| 623 | rates = ~0; |
| 624 | rates_len = sband->n_bitrates; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 628 | memset(mgmt, 0, 24); |
| 629 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 630 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 631 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 632 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 633 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 634 | skb_put(skb, 10); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 635 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 636 | IEEE80211_STYPE_REASSOC_REQ); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 637 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 638 | mgmt->u.reassoc_req.listen_interval = |
| 639 | cpu_to_le16(local->hw.conf.listen_interval); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 640 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, |
| 641 | ETH_ALEN); |
| 642 | } else { |
| 643 | skb_put(skb, 4); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 644 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 645 | IEEE80211_STYPE_ASSOC_REQ); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 646 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 647 | mgmt->u.reassoc_req.listen_interval = |
| 648 | cpu_to_le16(local->hw.conf.listen_interval); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 649 | } |
| 650 | |
| 651 | /* SSID */ |
| 652 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 653 | *pos++ = WLAN_EID_SSID; |
| 654 | *pos++ = ifsta->ssid_len; |
| 655 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
| 656 | |
Helmut Schaa | 0d580a7 | 2008-05-20 09:56:37 +0200 | [diff] [blame] | 657 | /* add all rates which were marked to be used above */ |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 658 | supp_rates_len = rates_len; |
| 659 | if (supp_rates_len > 8) |
| 660 | supp_rates_len = 8; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 661 | |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 662 | len = sband->n_bitrates; |
| 663 | pos = skb_put(skb, supp_rates_len + 2); |
| 664 | *pos++ = WLAN_EID_SUPP_RATES; |
| 665 | *pos++ = supp_rates_len; |
| 666 | |
| 667 | count = 0; |
| 668 | for (i = 0; i < sband->n_bitrates; i++) { |
| 669 | if (BIT(i) & rates) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 670 | int rate = sband->bitrates[i].bitrate; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 671 | *pos++ = (u8) (rate / 5); |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 672 | if (++count == 8) |
| 673 | break; |
| 674 | } |
| 675 | } |
| 676 | |
Jan-Espen Pettersen | 8ab65b0 | 2008-08-25 20:29:22 +0200 | [diff] [blame] | 677 | if (rates_len > count) { |
Helmut Schaa | 36d16ae | 2008-05-08 13:34:07 +0200 | [diff] [blame] | 678 | pos = skb_put(skb, rates_len - count + 2); |
| 679 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 680 | *pos++ = rates_len - count; |
| 681 | |
| 682 | for (i++; i < sband->n_bitrates; i++) { |
| 683 | if (BIT(i) & rates) { |
| 684 | int rate = sband->bitrates[i].bitrate; |
| 685 | *pos++ = (u8) (rate / 5); |
| 686 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 687 | } |
| 688 | } |
| 689 | |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 690 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
| 691 | /* 1. power capabilities */ |
| 692 | pos = skb_put(skb, 4); |
| 693 | *pos++ = WLAN_EID_PWR_CAPABILITY; |
| 694 | *pos++ = 2; |
| 695 | *pos++ = 0; /* min tx power */ |
| 696 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ |
| 697 | |
| 698 | /* 2. supported channels */ |
| 699 | /* TODO: get this in reg domain format */ |
| 700 | pos = skb_put(skb, 2 * sband->n_channels + 2); |
| 701 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; |
| 702 | *pos++ = 2 * sband->n_channels; |
| 703 | for (i = 0; i < sband->n_channels; i++) { |
| 704 | *pos++ = ieee80211_frequency_to_channel( |
| 705 | sband->channels[i].center_freq); |
| 706 | *pos++ = 1; /* one channel in the subband*/ |
| 707 | } |
| 708 | } |
| 709 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 710 | if (ifsta->extra_ie) { |
| 711 | pos = skb_put(skb, ifsta->extra_ie_len); |
| 712 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); |
| 713 | } |
| 714 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 715 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 716 | pos = skb_put(skb, 9); |
| 717 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; |
| 718 | *pos++ = 7; /* len */ |
| 719 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ |
| 720 | *pos++ = 0x50; |
| 721 | *pos++ = 0xf2; |
| 722 | *pos++ = 2; /* WME */ |
| 723 | *pos++ = 0; /* WME info */ |
| 724 | *pos++ = 1; /* WME ver */ |
| 725 | *pos++ = 0; |
| 726 | } |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 727 | |
Ron Rindjunsky | c715350 | 2007-11-26 16:14:31 +0200 | [diff] [blame] | 728 | /* wmm support is a must to HT */ |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 729 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 730 | sband->ht_info.ht_supported && |
| 731 | (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) { |
Emmanuel Grumbach | 9306102 | 2008-05-29 16:35:23 +0800 | [diff] [blame] | 732 | struct ieee80211_ht_addt_info *ht_add_info = |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 733 | (struct ieee80211_ht_addt_info *)ht_add_ie; |
Emmanuel Grumbach | 9306102 | 2008-05-29 16:35:23 +0800 | [diff] [blame] | 734 | u16 cap = sband->ht_info.cap; |
| 735 | __le16 tmp; |
| 736 | u32 flags = local->hw.conf.channel->flags; |
| 737 | |
| 738 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { |
| 739 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: |
| 740 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { |
| 741 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; |
| 742 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 743 | } |
| 744 | break; |
| 745 | case IEEE80211_HT_IE_CHA_SEC_BELOW: |
| 746 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { |
| 747 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; |
| 748 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 749 | } |
| 750 | break; |
| 751 | } |
| 752 | |
| 753 | tmp = cpu_to_le16(cap); |
Ron Rindjunsky | c715350 | 2007-11-26 16:14:31 +0200 | [diff] [blame] | 754 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
| 755 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 756 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 757 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 758 | memcpy(pos, &tmp, sizeof(u16)); |
| 759 | pos += sizeof(u16); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 760 | /* TODO: needs a define here for << 2 */ |
| 761 | *pos++ = sband->ht_info.ampdu_factor | |
| 762 | (sband->ht_info.ampdu_density << 2); |
| 763 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); |
Ron Rindjunsky | c715350 | 2007-11-26 16:14:31 +0200 | [diff] [blame] | 764 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 765 | |
| 766 | kfree(ifsta->assocreq_ies); |
| 767 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 768 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 769 | if (ifsta->assocreq_ies) |
| 770 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); |
| 771 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 772 | ieee80211_sta_tx(sdata, skb, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 773 | } |
| 774 | |
| 775 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 776 | static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 777 | struct ieee80211_if_sta *ifsta, u16 reason) |
| 778 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 779 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 780 | struct sk_buff *skb; |
| 781 | struct ieee80211_mgmt *mgmt; |
| 782 | |
| 783 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
| 784 | if (!skb) { |
| 785 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 786 | "frame\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 787 | return; |
| 788 | } |
| 789 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 790 | |
| 791 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 792 | memset(mgmt, 0, 24); |
| 793 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 794 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 795 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 796 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 797 | IEEE80211_STYPE_DEAUTH); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 798 | skb_put(skb, 2); |
| 799 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
| 800 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 801 | ieee80211_sta_tx(sdata, skb, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 805 | static void ieee80211_send_disassoc(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 806 | struct ieee80211_if_sta *ifsta, u16 reason) |
| 807 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 808 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 809 | struct sk_buff *skb; |
| 810 | struct ieee80211_mgmt *mgmt; |
| 811 | |
| 812 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
| 813 | if (!skb) { |
| 814 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 815 | "frame\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 816 | return; |
| 817 | } |
| 818 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 819 | |
| 820 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 821 | memset(mgmt, 0, 24); |
| 822 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 823 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 824 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 825 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 826 | IEEE80211_STYPE_DISASSOC); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 827 | skb_put(skb, 2); |
| 828 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); |
| 829 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 830 | ieee80211_sta_tx(sdata, skb, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 831 | } |
| 832 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 833 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
| 834 | struct ieee80211_if_sta *ifsta, bool deauth, |
| 835 | bool self_disconnected, u16 reason) |
| 836 | { |
| 837 | struct ieee80211_local *local = sdata->local; |
| 838 | struct sta_info *sta; |
| 839 | |
| 840 | rcu_read_lock(); |
| 841 | |
| 842 | sta = sta_info_get(local, ifsta->bssid); |
| 843 | if (!sta) { |
| 844 | rcu_read_unlock(); |
| 845 | return; |
| 846 | } |
| 847 | |
| 848 | if (deauth) { |
| 849 | ifsta->direct_probe_tries = 0; |
| 850 | ifsta->auth_tries = 0; |
| 851 | } |
| 852 | ifsta->assoc_scan_tries = 0; |
| 853 | ifsta->assoc_tries = 0; |
| 854 | |
| 855 | netif_carrier_off(sdata->dev); |
| 856 | |
| 857 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr); |
| 858 | |
| 859 | if (self_disconnected) { |
| 860 | if (deauth) |
| 861 | ieee80211_send_deauth(sdata, ifsta, reason); |
| 862 | else |
| 863 | ieee80211_send_disassoc(sdata, ifsta, reason); |
| 864 | } |
| 865 | |
| 866 | ieee80211_set_associated(sdata, ifsta, 0); |
| 867 | |
| 868 | if (self_disconnected) |
| 869 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
| 870 | |
| 871 | sta_info_unlink(&sta); |
| 872 | |
| 873 | rcu_read_unlock(); |
| 874 | |
| 875 | sta_info_destroy(sta); |
| 876 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 877 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 878 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 879 | struct ieee80211_if_sta *ifsta) |
| 880 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 881 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 882 | struct ieee80211_sta_bss *bss; |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 883 | int bss_privacy; |
| 884 | int wep_privacy; |
| 885 | int privacy_invoked; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 886 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 887 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 888 | return 0; |
| 889 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 890 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 891 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 892 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 893 | if (!bss) |
| 894 | return 0; |
| 895 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 896 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 897 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 898 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 899 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 900 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 901 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 902 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
| 903 | return 0; |
| 904 | |
| 905 | return 1; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 909 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 910 | struct ieee80211_if_sta *ifsta) |
| 911 | { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 912 | DECLARE_MAC_BUF(mac); |
| 913 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 914 | ifsta->assoc_tries++; |
| 915 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 916 | printk(KERN_DEBUG "%s: association with AP %s" |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 917 | " timed out\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 918 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 919 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 920 | return; |
| 921 | } |
| 922 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 923 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 924 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 925 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
| 926 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 927 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 928 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 929 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 930 | return; |
| 931 | } |
| 932 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 933 | ieee80211_send_assoc(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 934 | |
| 935 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
| 936 | } |
| 937 | |
| 938 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 939 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 940 | struct ieee80211_if_sta *ifsta) |
| 941 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 942 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 943 | struct sta_info *sta; |
| 944 | int disassoc; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 945 | DECLARE_MAC_BUF(mac); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 946 | |
| 947 | /* TODO: start monitoring current AP signal quality and number of |
| 948 | * missed beacons. Scan other channels every now and then and search |
| 949 | * for better APs. */ |
| 950 | /* TODO: remove expired BSSes */ |
| 951 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 952 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 953 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 954 | rcu_read_lock(); |
| 955 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 956 | sta = sta_info_get(local, ifsta->bssid); |
| 957 | if (!sta) { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 958 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 959 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 960 | disassoc = 1; |
| 961 | } else { |
| 962 | disassoc = 0; |
| 963 | if (time_after(jiffies, |
| 964 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 965 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 966 | printk(KERN_DEBUG "%s: No ProbeResp from " |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 967 | "current AP %s - assume out of " |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 968 | "range\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 969 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 970 | disassoc = 1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 971 | } else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 972 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 973 | local->scan_ssid, |
| 974 | local->scan_ssid_len); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 975 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 976 | } else { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 977 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 978 | if (time_after(jiffies, ifsta->last_probe + |
| 979 | IEEE80211_PROBE_INTERVAL)) { |
| 980 | ifsta->last_probe = jiffies; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 981 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 982 | ifsta->ssid, |
| 983 | ifsta->ssid_len); |
| 984 | } |
| 985 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 986 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 987 | |
| 988 | rcu_read_unlock(); |
| 989 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 990 | if (disassoc) |
| 991 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 992 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
| 993 | else |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 994 | mod_timer(&ifsta->timer, jiffies + |
| 995 | IEEE80211_MONITORING_INTERVAL); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 996 | } |
| 997 | |
| 998 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 999 | static void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1000 | u8 *ssid, size_t ssid_len) |
| 1001 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1002 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1003 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1004 | struct sk_buff *skb; |
| 1005 | struct ieee80211_mgmt *mgmt; |
| 1006 | u8 *pos, *supp_rates, *esupp_rates = NULL; |
| 1007 | int i; |
| 1008 | |
| 1009 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); |
| 1010 | if (!skb) { |
| 1011 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1012 | "request\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1013 | return; |
| 1014 | } |
| 1015 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1016 | |
| 1017 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 1018 | memset(mgmt, 0, 24); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 1019 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1020 | IEEE80211_STYPE_PROBE_REQ); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1021 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1022 | if (dst) { |
| 1023 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 1024 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
| 1025 | } else { |
| 1026 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 1027 | memset(mgmt->bssid, 0xff, ETH_ALEN); |
| 1028 | } |
| 1029 | pos = skb_put(skb, 2 + ssid_len); |
| 1030 | *pos++ = WLAN_EID_SSID; |
| 1031 | *pos++ = ssid_len; |
| 1032 | memcpy(pos, ssid, ssid_len); |
| 1033 | |
| 1034 | supp_rates = skb_put(skb, 2); |
| 1035 | supp_rates[0] = WLAN_EID_SUPP_RATES; |
| 1036 | supp_rates[1] = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1037 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1038 | |
| 1039 | for (i = 0; i < sband->n_bitrates; i++) { |
| 1040 | struct ieee80211_rate *rate = &sband->bitrates[i]; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1041 | if (esupp_rates) { |
| 1042 | pos = skb_put(skb, 1); |
| 1043 | esupp_rates[1]++; |
| 1044 | } else if (supp_rates[1] == 8) { |
| 1045 | esupp_rates = skb_put(skb, 3); |
| 1046 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; |
| 1047 | esupp_rates[1] = 1; |
| 1048 | pos = &esupp_rates[2]; |
| 1049 | } else { |
| 1050 | pos = skb_put(skb, 1); |
| 1051 | supp_rates[1]++; |
| 1052 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1053 | *pos = rate->bitrate / 5; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1054 | } |
| 1055 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1056 | ieee80211_sta_tx(sdata, skb, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1057 | } |
| 1058 | |
| 1059 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1060 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1061 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1062 | if (!sdata || !sdata->default_key || |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1063 | sdata->default_key->conf.alg != ALG_WEP) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1064 | return 0; |
| 1065 | return 1; |
| 1066 | } |
| 1067 | |
| 1068 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1069 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1070 | struct ieee80211_if_sta *ifsta) |
| 1071 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1072 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1073 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1074 | ieee80211_associate(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1075 | } |
| 1076 | |
| 1077 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1078 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1079 | struct ieee80211_if_sta *ifsta, |
| 1080 | struct ieee80211_mgmt *mgmt, |
| 1081 | size_t len) |
| 1082 | { |
| 1083 | u8 *pos; |
| 1084 | struct ieee802_11_elems elems; |
| 1085 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1086 | pos = mgmt->u.auth.variable; |
John W. Linville | 67a4cce | 2007-10-12 16:40:37 -0400 | [diff] [blame] | 1087 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1088 | if (!elems.challenge) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1089 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1090 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1091 | elems.challenge_len + 2, 1); |
| 1092 | } |
| 1093 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1094 | static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid, |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1095 | u8 dialog_token, u16 status, u16 policy, |
| 1096 | u16 buf_size, u16 timeout) |
| 1097 | { |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1098 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1099 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1100 | struct sk_buff *skb; |
| 1101 | struct ieee80211_mgmt *mgmt; |
| 1102 | u16 capab; |
| 1103 | |
Ester Kummer | 3acea5b | 2008-04-17 16:05:14 -0700 | [diff] [blame] | 1104 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
| 1105 | |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1106 | if (!skb) { |
| 1107 | printk(KERN_DEBUG "%s: failed to allocate buffer " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1108 | "for addba resp frame\n", sdata->dev->name); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1109 | return; |
| 1110 | } |
| 1111 | |
| 1112 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1113 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 1114 | memset(mgmt, 0, 24); |
| 1115 | memcpy(mgmt->da, da, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1116 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 1117 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1118 | memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1119 | else |
| 1120 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 1121 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1122 | IEEE80211_STYPE_ACTION); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1123 | |
| 1124 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); |
| 1125 | mgmt->u.action.category = WLAN_CATEGORY_BACK; |
| 1126 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; |
| 1127 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; |
| 1128 | |
| 1129 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ |
| 1130 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ |
| 1131 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ |
| 1132 | |
| 1133 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); |
| 1134 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); |
| 1135 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); |
| 1136 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1137 | ieee80211_sta_tx(sdata, skb, 0); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1138 | |
| 1139 | return; |
| 1140 | } |
| 1141 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1142 | void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da, |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1143 | u16 tid, u8 dialog_token, u16 start_seq_num, |
| 1144 | u16 agg_size, u16 timeout) |
| 1145 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1146 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1147 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 1148 | struct sk_buff *skb; |
| 1149 | struct ieee80211_mgmt *mgmt; |
| 1150 | u16 capab; |
| 1151 | |
Ester Kummer | 3acea5b | 2008-04-17 16:05:14 -0700 | [diff] [blame] | 1152 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1153 | |
| 1154 | if (!skb) { |
| 1155 | printk(KERN_ERR "%s: failed to allocate buffer " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1156 | "for addba request frame\n", sdata->dev->name); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1157 | return; |
| 1158 | } |
| 1159 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1160 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 1161 | memset(mgmt, 0, 24); |
| 1162 | memcpy(mgmt->da, da, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1163 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1164 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1165 | memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1166 | else |
| 1167 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 1168 | |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 1169 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1170 | IEEE80211_STYPE_ACTION); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1171 | |
| 1172 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); |
| 1173 | |
| 1174 | mgmt->u.action.category = WLAN_CATEGORY_BACK; |
| 1175 | mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; |
| 1176 | |
| 1177 | mgmt->u.action.u.addba_req.dialog_token = dialog_token; |
| 1178 | capab = (u16)(1 << 1); /* bit 1 aggregation policy */ |
| 1179 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ |
| 1180 | capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ |
| 1181 | |
| 1182 | mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); |
| 1183 | |
| 1184 | mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); |
| 1185 | mgmt->u.action.u.addba_req.start_seq_num = |
| 1186 | cpu_to_le16(start_seq_num << 4); |
| 1187 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1188 | ieee80211_sta_tx(sdata, skb, 0); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1189 | } |
| 1190 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1191 | static void ieee80211_sta_process_addba_request(struct ieee80211_local *local, |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1192 | struct ieee80211_mgmt *mgmt, |
| 1193 | size_t len) |
| 1194 | { |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1195 | struct ieee80211_hw *hw = &local->hw; |
| 1196 | struct ieee80211_conf *conf = &hw->conf; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1197 | struct sta_info *sta; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1198 | struct tid_ampdu_rx *tid_agg_rx; |
| 1199 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1200 | u8 dialog_token; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1201 | int ret = -EOPNOTSUPP; |
| 1202 | DECLARE_MAC_BUF(mac); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1203 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1204 | rcu_read_lock(); |
| 1205 | |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1206 | sta = sta_info_get(local, mgmt->sa); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1207 | if (!sta) { |
| 1208 | rcu_read_unlock(); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1209 | return; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1210 | } |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1211 | |
| 1212 | /* extract session parameters from addba request frame */ |
| 1213 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; |
| 1214 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1215 | start_seq_num = |
| 1216 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1217 | |
| 1218 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); |
| 1219 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; |
| 1220 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; |
| 1221 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; |
| 1222 | |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1223 | status = WLAN_STATUS_REQUEST_DECLINED; |
| 1224 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1225 | /* sanity check for incoming parameters: |
| 1226 | * check if configuration can support the BA policy |
| 1227 | * and if buffer size does not exceeds max value */ |
| 1228 | if (((ba_policy != 1) |
| 1229 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) |
| 1230 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { |
| 1231 | status = WLAN_STATUS_INVALID_QOS_PARAM; |
| 1232 | #ifdef CONFIG_MAC80211_HT_DEBUG |
| 1233 | if (net_ratelimit()) |
Ron Rindjunsky | 7b9d44c | 2008-03-18 15:00:31 -0700 | [diff] [blame] | 1234 | printk(KERN_DEBUG "AddBA Req with bad params from " |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1235 | "%s on tid %u. policy %d, buffer size %d\n", |
| 1236 | print_mac(mac, mgmt->sa), tid, ba_policy, |
| 1237 | buf_size); |
| 1238 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
| 1239 | goto end_no_lock; |
| 1240 | } |
| 1241 | /* determine default buffer size */ |
| 1242 | if (buf_size == 0) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1243 | struct ieee80211_supported_band *sband; |
| 1244 | |
| 1245 | sband = local->hw.wiphy->bands[conf->channel->band]; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1246 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1247 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1248 | } |
| 1249 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1250 | |
| 1251 | /* examine state machine */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1252 | spin_lock_bh(&sta->lock); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1253 | |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1254 | if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1255 | #ifdef CONFIG_MAC80211_HT_DEBUG |
| 1256 | if (net_ratelimit()) |
Ron Rindjunsky | 7b9d44c | 2008-03-18 15:00:31 -0700 | [diff] [blame] | 1257 | printk(KERN_DEBUG "unexpected AddBA Req from " |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1258 | "%s on tid %u\n", |
| 1259 | print_mac(mac, mgmt->sa), tid); |
| 1260 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
| 1261 | goto end; |
| 1262 | } |
| 1263 | |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1264 | /* prepare A-MPDU MLME for Rx aggregation */ |
| 1265 | sta->ampdu_mlme.tid_rx[tid] = |
| 1266 | kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); |
| 1267 | if (!sta->ampdu_mlme.tid_rx[tid]) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1268 | #ifdef CONFIG_MAC80211_HT_DEBUG |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1269 | if (net_ratelimit()) |
| 1270 | printk(KERN_ERR "allocate rx mlme to tid %d failed\n", |
| 1271 | tid); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1272 | #endif |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1273 | goto end; |
| 1274 | } |
| 1275 | /* rx timer */ |
| 1276 | sta->ampdu_mlme.tid_rx[tid]->session_timer.function = |
| 1277 | sta_rx_agg_session_timer_expired; |
| 1278 | sta->ampdu_mlme.tid_rx[tid]->session_timer.data = |
| 1279 | (unsigned long)&sta->timer_to_tid[tid]; |
| 1280 | init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); |
| 1281 | |
| 1282 | tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; |
| 1283 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1284 | /* prepare reordering buffer */ |
| 1285 | tid_agg_rx->reorder_buf = |
Senthil Balasubramanian | c97c23e | 2008-05-28 23:15:32 +0530 | [diff] [blame] | 1286 | kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC); |
Johannes Berg | 03147df | 2008-02-26 00:39:28 +0100 | [diff] [blame] | 1287 | if (!tid_agg_rx->reorder_buf) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1288 | #ifdef CONFIG_MAC80211_HT_DEBUG |
Johannes Berg | 03147df | 2008-02-26 00:39:28 +0100 | [diff] [blame] | 1289 | if (net_ratelimit()) |
| 1290 | printk(KERN_ERR "can not allocate reordering buffer " |
| 1291 | "to tid %d\n", tid); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1292 | #endif |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1293 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1294 | goto end; |
| 1295 | } |
| 1296 | memset(tid_agg_rx->reorder_buf, 0, |
Senthil Balasubramanian | c97c23e | 2008-05-28 23:15:32 +0530 | [diff] [blame] | 1297 | buf_size * sizeof(struct sk_buff *)); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1298 | |
| 1299 | if (local->ops->ampdu_action) |
| 1300 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1301 | sta->addr, tid, &start_seq_num); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1302 | #ifdef CONFIG_MAC80211_HT_DEBUG |
Ron Rindjunsky | 513a102 | 2008-04-07 10:16:56 -0700 | [diff] [blame] | 1303 | printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1304 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
| 1305 | |
| 1306 | if (ret) { |
| 1307 | kfree(tid_agg_rx->reorder_buf); |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1308 | kfree(tid_agg_rx); |
| 1309 | sta->ampdu_mlme.tid_rx[tid] = NULL; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1310 | goto end; |
| 1311 | } |
| 1312 | |
| 1313 | /* change state and send addba resp */ |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1314 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1315 | tid_agg_rx->dialog_token = dialog_token; |
| 1316 | tid_agg_rx->ssn = start_seq_num; |
| 1317 | tid_agg_rx->head_seq_num = start_seq_num; |
| 1318 | tid_agg_rx->buf_size = buf_size; |
| 1319 | tid_agg_rx->timeout = timeout; |
| 1320 | tid_agg_rx->stored_mpdu_num = 0; |
| 1321 | status = WLAN_STATUS_SUCCESS; |
| 1322 | end: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1323 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1324 | |
| 1325 | end_no_lock: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1326 | ieee80211_send_addba_resp(sta->sdata, sta->addr, tid, |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1327 | dialog_token, status, 1, buf_size, timeout); |
| 1328 | rcu_read_unlock(); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 1329 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1330 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1331 | static void ieee80211_sta_process_addba_resp(struct ieee80211_local *local, |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1332 | struct ieee80211_mgmt *mgmt, |
| 1333 | size_t len) |
| 1334 | { |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1335 | struct ieee80211_hw *hw = &local->hw; |
| 1336 | struct sta_info *sta; |
| 1337 | u16 capab; |
| 1338 | u16 tid; |
| 1339 | u8 *state; |
| 1340 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1341 | rcu_read_lock(); |
| 1342 | |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1343 | sta = sta_info_get(local, mgmt->sa); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1344 | if (!sta) { |
| 1345 | rcu_read_unlock(); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1346 | return; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1347 | } |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1348 | |
| 1349 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); |
| 1350 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; |
| 1351 | |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1352 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1353 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1354 | spin_lock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1355 | |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1356 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1357 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1358 | goto addba_resp_exit; |
| 1359 | } |
| 1360 | |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1361 | if (mgmt->u.action.u.addba_resp.dialog_token != |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1362 | sta->ampdu_mlme.tid_tx[tid]->dialog_token) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1363 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1364 | #ifdef CONFIG_MAC80211_HT_DEBUG |
| 1365 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); |
| 1366 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1367 | goto addba_resp_exit; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1368 | } |
| 1369 | |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1370 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1371 | #ifdef CONFIG_MAC80211_HT_DEBUG |
| 1372 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); |
| 1373 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
| 1374 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) |
| 1375 | == WLAN_STATUS_SUCCESS) { |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1376 | *state |= HT_ADDBA_RECEIVED_MSK; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1377 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1378 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1379 | if (*state == HT_AGG_STATE_OPERATIONAL) |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1380 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1381 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1382 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1383 | } else { |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1384 | sta->ampdu_mlme.addba_req_num[tid]++; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1385 | /* this will allow the state check in stop_BA_session */ |
| 1386 | *state = HT_AGG_STATE_OPERATIONAL; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1387 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1388 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, |
| 1389 | WLAN_BACK_INITIATOR); |
| 1390 | } |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1391 | |
| 1392 | addba_resp_exit: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1393 | rcu_read_unlock(); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1394 | } |
| 1395 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1396 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid, |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1397 | u16 initiator, u16 reason_code) |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1398 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1399 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1400 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 1401 | struct sk_buff *skb; |
| 1402 | struct ieee80211_mgmt *mgmt; |
| 1403 | u16 params; |
| 1404 | |
Ester Kummer | 3acea5b | 2008-04-17 16:05:14 -0700 | [diff] [blame] | 1405 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1406 | |
| 1407 | if (!skb) { |
| 1408 | printk(KERN_ERR "%s: failed to allocate buffer " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1409 | "for delba frame\n", sdata->dev->name); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1410 | return; |
| 1411 | } |
| 1412 | |
| 1413 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1414 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 1415 | memset(mgmt, 0, 24); |
| 1416 | memcpy(mgmt->da, da, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1417 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 1418 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1419 | memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1420 | else |
| 1421 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 1422 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1423 | IEEE80211_STYPE_ACTION); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1424 | |
| 1425 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); |
| 1426 | |
| 1427 | mgmt->u.action.category = WLAN_CATEGORY_BACK; |
| 1428 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; |
| 1429 | params = (u16)(initiator << 11); /* bit 11 initiator */ |
| 1430 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ |
| 1431 | |
| 1432 | mgmt->u.action.u.delba.params = cpu_to_le16(params); |
| 1433 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); |
| 1434 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1435 | ieee80211_sta_tx(sdata, skb, 0); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1436 | } |
| 1437 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1438 | void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn) |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1439 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1440 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1441 | struct sk_buff *skb; |
| 1442 | struct ieee80211_bar *bar; |
| 1443 | u16 bar_control = 0; |
| 1444 | |
| 1445 | skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom); |
| 1446 | if (!skb) { |
| 1447 | printk(KERN_ERR "%s: failed to allocate buffer for " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1448 | "bar frame\n", sdata->dev->name); |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1449 | return; |
| 1450 | } |
| 1451 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1452 | bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar)); |
| 1453 | memset(bar, 0, sizeof(*bar)); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 1454 | bar->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | |
| 1455 | IEEE80211_STYPE_BACK_REQ); |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1456 | memcpy(bar->ra, ra, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1457 | memcpy(bar->ta, sdata->dev->dev_addr, ETH_ALEN); |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1458 | bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL; |
| 1459 | bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA; |
| 1460 | bar_control |= (u16)(tid << 12); |
| 1461 | bar->control = cpu_to_le16(bar_control); |
| 1462 | bar->start_seq_num = cpu_to_le16(ssn); |
| 1463 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1464 | ieee80211_sta_tx(sdata, skb, 0); |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1465 | } |
| 1466 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1467 | void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1468 | u16 initiator, u16 reason) |
| 1469 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1470 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1471 | struct ieee80211_hw *hw = &local->hw; |
| 1472 | struct sta_info *sta; |
Ron Rindjunsky | b580781 | 2007-12-25 17:00:35 +0200 | [diff] [blame] | 1473 | int ret, i; |
Ron Rindjunsky | 513a102 | 2008-04-07 10:16:56 -0700 | [diff] [blame] | 1474 | DECLARE_MAC_BUF(mac); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1475 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1476 | rcu_read_lock(); |
| 1477 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1478 | sta = sta_info_get(local, ra); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1479 | if (!sta) { |
| 1480 | rcu_read_unlock(); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1481 | return; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1482 | } |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1483 | |
| 1484 | /* check if TID is in operational state */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1485 | spin_lock_bh(&sta->lock); |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1486 | if (sta->ampdu_mlme.tid_state_rx[tid] |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1487 | != HT_AGG_STATE_OPERATIONAL) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1488 | spin_unlock_bh(&sta->lock); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1489 | rcu_read_unlock(); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1490 | return; |
| 1491 | } |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1492 | sta->ampdu_mlme.tid_state_rx[tid] = |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1493 | HT_AGG_STATE_REQ_STOP_BA_MSK | |
| 1494 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1495 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1496 | |
| 1497 | /* stop HW Rx aggregation. ampdu_action existence |
| 1498 | * already verified in session init so we add the BUG_ON */ |
| 1499 | BUG_ON(!local->ops->ampdu_action); |
| 1500 | |
Ron Rindjunsky | 513a102 | 2008-04-07 10:16:56 -0700 | [diff] [blame] | 1501 | #ifdef CONFIG_MAC80211_HT_DEBUG |
| 1502 | printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n", |
| 1503 | print_mac(mac, ra), tid); |
| 1504 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
| 1505 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1506 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1507 | ra, tid, NULL); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1508 | if (ret) |
| 1509 | printk(KERN_DEBUG "HW problem - can not stop rx " |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1510 | "aggregation for tid %d\n", tid); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1511 | |
| 1512 | /* shutdown timer has not expired */ |
| 1513 | if (initiator != WLAN_BACK_TIMER) |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1514 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1515 | |
| 1516 | /* check if this is a self generated aggregation halt */ |
| 1517 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1518 | ieee80211_send_delba(sdata, ra, tid, 0, reason); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1519 | |
| 1520 | /* free the reordering buffer */ |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1521 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) { |
| 1522 | if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) { |
Ron Rindjunsky | b580781 | 2007-12-25 17:00:35 +0200 | [diff] [blame] | 1523 | /* release the reordered frames */ |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1524 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]); |
| 1525 | sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--; |
| 1526 | sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL; |
Ron Rindjunsky | b580781 | 2007-12-25 17:00:35 +0200 | [diff] [blame] | 1527 | } |
| 1528 | } |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1529 | /* free resources */ |
| 1530 | kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf); |
| 1531 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
| 1532 | sta->ampdu_mlme.tid_rx[tid] = NULL; |
| 1533 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1534 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1535 | rcu_read_unlock(); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1536 | } |
| 1537 | |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1538 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1539 | static void ieee80211_sta_process_delba(struct ieee80211_sub_if_data *sdata, |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1540 | struct ieee80211_mgmt *mgmt, size_t len) |
| 1541 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1542 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1543 | struct sta_info *sta; |
| 1544 | u16 tid, params; |
| 1545 | u16 initiator; |
| 1546 | DECLARE_MAC_BUF(mac); |
| 1547 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1548 | rcu_read_lock(); |
| 1549 | |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1550 | sta = sta_info_get(local, mgmt->sa); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1551 | if (!sta) { |
| 1552 | rcu_read_unlock(); |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1553 | return; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1554 | } |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1555 | |
| 1556 | params = le16_to_cpu(mgmt->u.action.u.delba.params); |
| 1557 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; |
| 1558 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; |
| 1559 | |
| 1560 | #ifdef CONFIG_MAC80211_HT_DEBUG |
| 1561 | if (net_ratelimit()) |
Ron Rindjunsky | d92684e | 2008-01-28 14:07:22 +0200 | [diff] [blame] | 1562 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
| 1563 | print_mac(mac, mgmt->sa), |
Ron Rindjunsky | 2e354ed | 2008-03-18 15:00:30 -0700 | [diff] [blame] | 1564 | initiator ? "initiator" : "recipient", tid, |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1565 | mgmt->u.action.u.delba.reason_code); |
| 1566 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
| 1567 | |
| 1568 | if (initiator == WLAN_BACK_INITIATOR) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1569 | ieee80211_sta_stop_rx_ba_session(sdata, sta->addr, tid, |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1570 | WLAN_BACK_INITIATOR, 0); |
Ron Rindjunsky | d92684e | 2008-01-28 14:07:22 +0200 | [diff] [blame] | 1571 | else { /* WLAN_BACK_RECIPIENT */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1572 | spin_lock_bh(&sta->lock); |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1573 | sta->ampdu_mlme.tid_state_tx[tid] = |
Ron Rindjunsky | d92684e | 2008-01-28 14:07:22 +0200 | [diff] [blame] | 1574 | HT_AGG_STATE_OPERATIONAL; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1575 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | d92684e | 2008-01-28 14:07:22 +0200 | [diff] [blame] | 1576 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, |
| 1577 | WLAN_BACK_RECIPIENT); |
| 1578 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1579 | rcu_read_unlock(); |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 1580 | } |
| 1581 | |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1582 | /* |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1583 | * After sending add Block Ack request we activated a timer until |
| 1584 | * add Block Ack response will arrive from the recipient. |
| 1585 | * If this timer expires sta_addba_resp_timer_expired will be executed. |
| 1586 | */ |
| 1587 | void sta_addba_resp_timer_expired(unsigned long data) |
| 1588 | { |
| 1589 | /* not an elegant detour, but there is no choice as the timer passes |
| 1590 | * only one argument, and both sta_info and TID are needed, so init |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1591 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1592 | * array gives the sta through container_of */ |
Senthil Balasubramanian | 70d251b | 2008-05-28 20:08:12 +0530 | [diff] [blame] | 1593 | u16 tid = *(u8 *)data; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1594 | struct sta_info *temp_sta = container_of((void *)data, |
| 1595 | struct sta_info, timer_to_tid[tid]); |
| 1596 | |
| 1597 | struct ieee80211_local *local = temp_sta->local; |
| 1598 | struct ieee80211_hw *hw = &local->hw; |
| 1599 | struct sta_info *sta; |
| 1600 | u8 *state; |
| 1601 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1602 | rcu_read_lock(); |
| 1603 | |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1604 | sta = sta_info_get(local, temp_sta->addr); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1605 | if (!sta) { |
| 1606 | rcu_read_unlock(); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1607 | return; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1608 | } |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1609 | |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 1610 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1611 | /* check if the TID waits for addBA response */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1612 | spin_lock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1613 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1614 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1615 | *state = HT_AGG_STATE_IDLE; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1616 | #ifdef CONFIG_MAC80211_HT_DEBUG |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1617 | printk(KERN_DEBUG "timer expired on tid %d but we are not " |
| 1618 | "expecting addBA response there", tid); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1619 | #endif |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1620 | goto timer_expired_exit; |
| 1621 | } |
| 1622 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1623 | #ifdef CONFIG_MAC80211_HT_DEBUG |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1624 | printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1625 | #endif |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1626 | |
| 1627 | /* go through the state check in stop_BA_session */ |
| 1628 | *state = HT_AGG_STATE_OPERATIONAL; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1629 | spin_unlock_bh(&sta->lock); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1630 | ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, |
| 1631 | WLAN_BACK_INITIATOR); |
| 1632 | |
| 1633 | timer_expired_exit: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1634 | rcu_read_unlock(); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 1635 | } |
| 1636 | |
| 1637 | /* |
Ron Rindjunsky | 7b9d44c | 2008-03-18 15:00:31 -0700 | [diff] [blame] | 1638 | * After accepting the AddBA Request we activated a timer, |
| 1639 | * resetting it after each frame that arrives from the originator. |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1640 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. |
| 1641 | */ |
Adrian Bunk | 712590d | 2008-04-21 11:47:51 +0300 | [diff] [blame] | 1642 | static void sta_rx_agg_session_timer_expired(unsigned long data) |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1643 | { |
| 1644 | /* not an elegant detour, but there is no choice as the timer passes |
Senthil Balasubramanian | 70d251b | 2008-05-28 20:08:12 +0530 | [diff] [blame] | 1645 | * only one argument, and various sta_info are needed here, so init |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1646 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1647 | * array gives the sta through container_of */ |
| 1648 | u8 *ptid = (u8 *)data; |
| 1649 | u8 *timer_to_id = ptid - *ptid; |
| 1650 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, |
| 1651 | timer_to_tid[0]); |
| 1652 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1653 | #ifdef CONFIG_MAC80211_HT_DEBUG |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1654 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1655 | #endif |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1656 | ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->addr, |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1657 | (u16)*ptid, WLAN_BACK_TIMER, |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1658 | WLAN_REASON_QSTA_TIMEOUT); |
| 1659 | } |
| 1660 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1661 | void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr) |
Ron Rindjunsky | 85249e5 | 2008-03-18 15:00:32 -0700 | [diff] [blame] | 1662 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1663 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | 85249e5 | 2008-03-18 15:00:32 -0700 | [diff] [blame] | 1664 | int i; |
| 1665 | |
| 1666 | for (i = 0; i < STA_TID_NUM; i++) { |
| 1667 | ieee80211_stop_tx_ba_session(&local->hw, addr, i, |
| 1668 | WLAN_BACK_INITIATOR); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1669 | ieee80211_sta_stop_rx_ba_session(sdata, addr, i, |
Ron Rindjunsky | 85249e5 | 2008-03-18 15:00:32 -0700 | [diff] [blame] | 1670 | WLAN_BACK_RECIPIENT, |
| 1671 | WLAN_REASON_QSTA_LEAVE_QBSS); |
| 1672 | } |
| 1673 | } |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 1674 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1675 | static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata, |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1676 | struct ieee80211_msrment_ie *request_ie, |
| 1677 | const u8 *da, const u8 *bssid, |
| 1678 | u8 dialog_token) |
| 1679 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1680 | struct ieee80211_local *local = sdata->local; |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1681 | struct sk_buff *skb; |
| 1682 | struct ieee80211_mgmt *msr_report; |
| 1683 | |
| 1684 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + |
| 1685 | sizeof(struct ieee80211_msrment_ie)); |
| 1686 | |
| 1687 | if (!skb) { |
| 1688 | printk(KERN_ERR "%s: failed to allocate buffer for " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1689 | "measurement report frame\n", sdata->dev->name); |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1690 | return; |
| 1691 | } |
| 1692 | |
| 1693 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1694 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); |
| 1695 | memset(msr_report, 0, 24); |
| 1696 | memcpy(msr_report->da, da, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1697 | memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN); |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1698 | memcpy(msr_report->bssid, bssid, ETH_ALEN); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 1699 | msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1700 | IEEE80211_STYPE_ACTION); |
| 1701 | |
| 1702 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); |
| 1703 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; |
| 1704 | msr_report->u.action.u.measurement.action_code = |
| 1705 | WLAN_ACTION_SPCT_MSR_RPRT; |
| 1706 | msr_report->u.action.u.measurement.dialog_token = dialog_token; |
| 1707 | |
| 1708 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; |
| 1709 | msr_report->u.action.u.measurement.length = |
| 1710 | sizeof(struct ieee80211_msrment_ie); |
| 1711 | |
| 1712 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, |
| 1713 | sizeof(struct ieee80211_msrment_ie)); |
| 1714 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; |
| 1715 | msr_report->u.action.u.measurement.msr_elem.mode |= |
| 1716 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; |
| 1717 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; |
| 1718 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1719 | ieee80211_sta_tx(sdata, skb, 0); |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1720 | } |
| 1721 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1722 | static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata, |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1723 | struct ieee80211_mgmt *mgmt, |
| 1724 | size_t len) |
| 1725 | { |
| 1726 | /* |
| 1727 | * Ignoring measurement request is spec violation. |
| 1728 | * Mandatory measurements must be reported optional |
| 1729 | * measurements might be refused or reported incapable |
| 1730 | * For now just refuse |
| 1731 | * TODO: Answer basic measurement as unmeasured |
| 1732 | */ |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1733 | ieee80211_send_refuse_measurement_request(sdata, |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 1734 | &mgmt->u.action.u.measurement.msr_elem, |
| 1735 | mgmt->sa, mgmt->bssid, |
| 1736 | mgmt->u.action.u.measurement.dialog_token); |
| 1737 | } |
| 1738 | |
| 1739 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1740 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1741 | struct ieee80211_if_sta *ifsta, |
| 1742 | struct ieee80211_mgmt *mgmt, |
| 1743 | size_t len) |
| 1744 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1745 | u16 auth_alg, auth_transaction, status_code; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1746 | DECLARE_MAC_BUF(mac); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1747 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1748 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1749 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1750 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1751 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1752 | if (len < 24 + 6) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1753 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1754 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 1755 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1756 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1757 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1758 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 1759 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1760 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1761 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1762 | |
| 1763 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); |
| 1764 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); |
| 1765 | status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 1766 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 1767 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
Johannes Berg | 135a211 | 2008-06-16 20:55:29 +0200 | [diff] [blame] | 1768 | /* |
| 1769 | * IEEE 802.11 standard does not require authentication in IBSS |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1770 | * networks and most implementations do not seem to use it. |
| 1771 | * However, try to reply to authentication attempts if someone |
| 1772 | * has actually implemented this. |
Johannes Berg | 135a211 | 2008-06-16 20:55:29 +0200 | [diff] [blame] | 1773 | */ |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1774 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1775 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1776 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1777 | } |
| 1778 | |
| 1779 | if (auth_alg != ifsta->auth_alg || |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1780 | auth_transaction != ifsta->auth_transaction) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1781 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1782 | |
| 1783 | if (status_code != WLAN_STATUS_SUCCESS) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1784 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
| 1785 | u8 algs[3]; |
| 1786 | const int num_algs = ARRAY_SIZE(algs); |
| 1787 | int i, pos; |
| 1788 | algs[0] = algs[1] = algs[2] = 0xff; |
| 1789 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 1790 | algs[0] = WLAN_AUTH_OPEN; |
| 1791 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 1792 | algs[1] = WLAN_AUTH_SHARED_KEY; |
| 1793 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 1794 | algs[2] = WLAN_AUTH_LEAP; |
| 1795 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) |
| 1796 | pos = 0; |
| 1797 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) |
| 1798 | pos = 1; |
| 1799 | else |
| 1800 | pos = 2; |
| 1801 | for (i = 0; i < num_algs; i++) { |
| 1802 | pos++; |
| 1803 | if (pos >= num_algs) |
| 1804 | pos = 0; |
| 1805 | if (algs[pos] == ifsta->auth_alg || |
| 1806 | algs[pos] == 0xff) |
| 1807 | continue; |
| 1808 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1809 | !ieee80211_sta_wep_configured(sdata)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1810 | continue; |
| 1811 | ifsta->auth_alg = algs[pos]; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1812 | break; |
| 1813 | } |
| 1814 | } |
| 1815 | return; |
| 1816 | } |
| 1817 | |
| 1818 | switch (ifsta->auth_alg) { |
| 1819 | case WLAN_AUTH_OPEN: |
| 1820 | case WLAN_AUTH_LEAP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1821 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1822 | break; |
| 1823 | case WLAN_AUTH_SHARED_KEY: |
| 1824 | if (ifsta->auth_transaction == 4) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1825 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1826 | else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1827 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1828 | break; |
| 1829 | } |
| 1830 | } |
| 1831 | |
| 1832 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1833 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1834 | struct ieee80211_if_sta *ifsta, |
| 1835 | struct ieee80211_mgmt *mgmt, |
| 1836 | size_t len) |
| 1837 | { |
| 1838 | u16 reason_code; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1839 | DECLARE_MAC_BUF(mac); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1840 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1841 | if (len < 24 + 2) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1842 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1843 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1844 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1845 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1846 | |
| 1847 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
| 1848 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 1849 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1850 | printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1851 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1852 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
| 1853 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || |
| 1854 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1855 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1856 | mod_timer(&ifsta->timer, jiffies + |
| 1857 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1858 | } |
| 1859 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1860 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1861 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1862 | } |
| 1863 | |
| 1864 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1865 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1866 | struct ieee80211_if_sta *ifsta, |
| 1867 | struct ieee80211_mgmt *mgmt, |
| 1868 | size_t len) |
| 1869 | { |
| 1870 | u16 reason_code; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1871 | DECLARE_MAC_BUF(mac); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1872 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1873 | if (len < 24 + 2) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1874 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1875 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1876 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1877 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1878 | |
| 1879 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
| 1880 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1881 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1882 | printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1883 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1884 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
| 1885 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1886 | mod_timer(&ifsta->timer, jiffies + |
| 1887 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1888 | } |
| 1889 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1890 | ieee80211_set_disassoc(sdata, ifsta, false, false, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1891 | } |
| 1892 | |
| 1893 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1894 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1895 | struct ieee80211_if_sta *ifsta, |
| 1896 | struct ieee80211_mgmt *mgmt, |
| 1897 | size_t len, |
| 1898 | int reassoc) |
| 1899 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1900 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1901 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1902 | struct sta_info *sta; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1903 | u64 rates, basic_rates; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1904 | u16 capab_info, status_code, aid; |
| 1905 | struct ieee802_11_elems elems; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1906 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1907 | u8 *pos; |
| 1908 | int i, j; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1909 | DECLARE_MAC_BUF(mac); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1910 | bool have_higher_than_11mbit = false; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1911 | |
| 1912 | /* AssocResp and ReassocResp have identical structure, so process both |
| 1913 | * of them in this function. */ |
| 1914 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1915 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1916 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1917 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1918 | if (len < 24 + 6) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1919 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1920 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1921 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1922 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1923 | |
| 1924 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
| 1925 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
| 1926 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1927 | |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1928 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1929 | "status=%d aid=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1930 | sdata->dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
Johannes Berg | ddd6858 | 2007-10-22 14:51:37 +0200 | [diff] [blame] | 1931 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1932 | |
| 1933 | if (status_code != WLAN_STATUS_SUCCESS) { |
| 1934 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1935 | sdata->dev->name, status_code); |
Daniel Drake | 8a69aa9 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 1936 | /* if this was a reassociation, ensure we try a "full" |
| 1937 | * association next time. This works around some broken APs |
| 1938 | * which do not correctly reject reassociation requests. */ |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1939 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1940 | return; |
| 1941 | } |
| 1942 | |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1943 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
| 1944 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1945 | "set\n", sdata->dev->name, aid); |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1946 | aid &= ~(BIT(15) | BIT(14)); |
| 1947 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1948 | pos = mgmt->u.assoc_resp.variable; |
John W. Linville | 67a4cce | 2007-10-12 16:40:37 -0400 | [diff] [blame] | 1949 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1950 | |
| 1951 | if (!elems.supp_rates) { |
| 1952 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1953 | sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1954 | return; |
| 1955 | } |
| 1956 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1957 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1958 | ifsta->aid = aid; |
| 1959 | ifsta->ap_capab = capab_info; |
| 1960 | |
| 1961 | kfree(ifsta->assocresp_ies); |
| 1962 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 1963 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1964 | if (ifsta->assocresp_ies) |
| 1965 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); |
| 1966 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1967 | rcu_read_lock(); |
| 1968 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1969 | /* Add STA entry for the AP */ |
| 1970 | sta = sta_info_get(local, ifsta->bssid); |
| 1971 | if (!sta) { |
| 1972 | struct ieee80211_sta_bss *bss; |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1973 | int err; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1974 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1975 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
| 1976 | if (!sta) { |
| 1977 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1978 | " the AP\n", sdata->dev->name); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1979 | rcu_read_unlock(); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1980 | return; |
| 1981 | } |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1982 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1983 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 1984 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1985 | if (bss) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1986 | sta->last_signal = bss->signal; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1987 | sta->last_qual = bss->qual; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1988 | sta->last_noise = bss->noise; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1989 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1990 | } |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1991 | |
| 1992 | err = sta_info_insert(sta); |
| 1993 | if (err) { |
| 1994 | printk(KERN_DEBUG "%s: failed to insert STA entry for" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1995 | " the AP (error %d)\n", sdata->dev->name, err); |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1996 | rcu_read_unlock(); |
| 1997 | return; |
| 1998 | } |
Ron Rindjunsky | a61dae1 | 2008-08-10 00:54:34 +0300 | [diff] [blame] | 1999 | /* update new sta with its last rx activity */ |
| 2000 | sta->last_rx = jiffies; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2001 | } |
| 2002 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 2003 | /* |
| 2004 | * FIXME: Do we really need to update the sta_info's information here? |
| 2005 | * We already know about the AP (we found it in our list) so it |
| 2006 | * should already be filled with the right info, no? |
| 2007 | * As is stands, all this is racy because typically we assume |
| 2008 | * the information that is filled in here (except flags) doesn't |
| 2009 | * change while a STA structure is alive. As such, it should move |
| 2010 | * to between the sta_info_alloc() and sta_info_insert() above. |
| 2011 | */ |
| 2012 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 2013 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
| 2014 | WLAN_STA_AUTHORIZED); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2015 | |
| 2016 | rates = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2017 | basic_rates = 0; |
| 2018 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 2019 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2020 | for (i = 0; i < elems.supp_rates_len; i++) { |
| 2021 | int rate = (elems.supp_rates[i] & 0x7f) * 5; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2022 | |
| 2023 | if (rate > 110) |
| 2024 | have_higher_than_11mbit = true; |
| 2025 | |
| 2026 | for (j = 0; j < sband->n_bitrates; j++) { |
| 2027 | if (sband->bitrates[j].bitrate == rate) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2028 | rates |= BIT(j); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2029 | if (elems.supp_rates[i] & 0x80) |
| 2030 | basic_rates |= BIT(j); |
| 2031 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2032 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2033 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2034 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
| 2035 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2036 | |
| 2037 | if (rate > 110) |
| 2038 | have_higher_than_11mbit = true; |
| 2039 | |
| 2040 | for (j = 0; j < sband->n_bitrates; j++) { |
| 2041 | if (sband->bitrates[j].bitrate == rate) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2042 | rates |= BIT(j); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2043 | if (elems.ext_supp_rates[i] & 0x80) |
| 2044 | basic_rates |= BIT(j); |
| 2045 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2046 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2047 | |
| 2048 | sta->supp_rates[local->hw.conf.channel->band] = rates; |
| 2049 | sdata->basic_rates = basic_rates; |
| 2050 | |
| 2051 | /* cf. IEEE 802.11 9.2.12 */ |
| 2052 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 2053 | have_higher_than_11mbit) |
| 2054 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 2055 | else |
| 2056 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2057 | |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 2058 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
| 2059 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2060 | struct ieee80211_ht_bss_info bss_info; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2061 | ieee80211_ht_cap_ie_to_ht_info( |
| 2062 | (struct ieee80211_ht_cap *) |
| 2063 | elems.ht_cap_elem, &sta->ht_info); |
| 2064 | ieee80211_ht_addt_info_ie_to_ht_bss_info( |
| 2065 | (struct ieee80211_ht_addt_info *) |
| 2066 | elems.ht_info_elem, &bss_info); |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 2067 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2068 | } |
| 2069 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2070 | rate_control_rate_init(sta, local); |
| 2071 | |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 2072 | if (elems.wmm_param) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 2073 | set_sta_flags(sta, WLAN_STA_WME); |
Johannes Berg | e5f98f2 | 2008-03-05 20:39:31 +0100 | [diff] [blame] | 2074 | rcu_read_unlock(); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2075 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2076 | elems.wmm_param_len); |
Johannes Berg | e5f98f2 | 2008-03-05 20:39:31 +0100 | [diff] [blame] | 2077 | } else |
| 2078 | rcu_read_unlock(); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2079 | |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 2080 | /* set AID and assoc capability, |
| 2081 | * ieee80211_set_associated() will tell the driver */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2082 | bss_conf->aid = aid; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 2083 | bss_conf->assoc_capability = capab_info; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2084 | ieee80211_set_associated(sdata, ifsta, 1); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2085 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2086 | ieee80211_associated(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2087 | } |
| 2088 | |
| 2089 | |
| 2090 | /* Caller must hold local->sta_bss_lock */ |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2091 | static void __ieee80211_rx_bss_hash_add(struct ieee80211_local *local, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2092 | struct ieee80211_sta_bss *bss) |
| 2093 | { |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2094 | u8 hash_idx; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2095 | |
| 2096 | if (bss_mesh_cfg(bss)) |
| 2097 | hash_idx = mesh_id_hash(bss_mesh_id(bss), |
| 2098 | bss_mesh_id_len(bss)); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2099 | else |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2100 | hash_idx = STA_HASH(bss->bssid); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2101 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2102 | bss->hnext = local->sta_bss_hash[hash_idx]; |
| 2103 | local->sta_bss_hash[hash_idx] = bss; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2104 | } |
| 2105 | |
| 2106 | |
| 2107 | /* Caller must hold local->sta_bss_lock */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2108 | static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2109 | struct ieee80211_sta_bss *bss) |
| 2110 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2111 | struct ieee80211_sta_bss *b, *prev = NULL; |
| 2112 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; |
| 2113 | while (b) { |
| 2114 | if (b == bss) { |
| 2115 | if (!prev) |
| 2116 | local->sta_bss_hash[STA_HASH(bss->bssid)] = |
| 2117 | bss->hnext; |
| 2118 | else |
| 2119 | prev->hnext = bss->hnext; |
| 2120 | break; |
| 2121 | } |
| 2122 | prev = b; |
| 2123 | b = b->hnext; |
| 2124 | } |
| 2125 | } |
| 2126 | |
| 2127 | |
| 2128 | static struct ieee80211_sta_bss * |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2129 | ieee80211_rx_bss_add(struct ieee80211_sub_if_data *sdata, u8 *bssid, int freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 2130 | u8 *ssid, u8 ssid_len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2131 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2132 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2133 | struct ieee80211_sta_bss *bss; |
| 2134 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 2135 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2136 | if (!bss) |
| 2137 | return NULL; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2138 | atomic_inc(&bss->users); |
| 2139 | atomic_inc(&bss->users); |
| 2140 | memcpy(bss->bssid, bssid, ETH_ALEN); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2141 | bss->freq = freq; |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 2142 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
| 2143 | memcpy(bss->ssid, ssid, ssid_len); |
| 2144 | bss->ssid_len = ssid_len; |
| 2145 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2146 | |
| 2147 | spin_lock_bh(&local->sta_bss_lock); |
| 2148 | /* TODO: order by RSSI? */ |
| 2149 | list_add_tail(&bss->list, &local->sta_bss_list); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2150 | __ieee80211_rx_bss_hash_add(local, bss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2151 | spin_unlock_bh(&local->sta_bss_lock); |
| 2152 | return bss; |
| 2153 | } |
| 2154 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2155 | static struct ieee80211_sta_bss * |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2156 | ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 2157 | u8 *ssid, u8 ssid_len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2158 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2159 | struct ieee80211_sta_bss *bss; |
| 2160 | |
| 2161 | spin_lock_bh(&local->sta_bss_lock); |
| 2162 | bss = local->sta_bss_hash[STA_HASH(bssid)]; |
| 2163 | while (bss) { |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2164 | if (!bss_mesh_cfg(bss) && |
| 2165 | !memcmp(bss->bssid, bssid, ETH_ALEN) && |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2166 | bss->freq == freq && |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 2167 | bss->ssid_len == ssid_len && |
| 2168 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2169 | atomic_inc(&bss->users); |
| 2170 | break; |
| 2171 | } |
| 2172 | bss = bss->hnext; |
| 2173 | } |
| 2174 | spin_unlock_bh(&local->sta_bss_lock); |
| 2175 | return bss; |
| 2176 | } |
| 2177 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2178 | #ifdef CONFIG_MAC80211_MESH |
| 2179 | static struct ieee80211_sta_bss * |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2180 | ieee80211_rx_mesh_bss_get(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len, |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2181 | u8 *mesh_cfg, int freq) |
| 2182 | { |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2183 | struct ieee80211_sta_bss *bss; |
| 2184 | |
| 2185 | spin_lock_bh(&local->sta_bss_lock); |
| 2186 | bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)]; |
| 2187 | while (bss) { |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2188 | if (bss_mesh_cfg(bss) && |
| 2189 | !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) && |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2190 | bss->freq == freq && |
| 2191 | mesh_id_len == bss->mesh_id_len && |
| 2192 | (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id, |
| 2193 | mesh_id_len))) { |
| 2194 | atomic_inc(&bss->users); |
| 2195 | break; |
| 2196 | } |
| 2197 | bss = bss->hnext; |
| 2198 | } |
| 2199 | spin_unlock_bh(&local->sta_bss_lock); |
| 2200 | return bss; |
| 2201 | } |
| 2202 | |
| 2203 | static struct ieee80211_sta_bss * |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2204 | ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len, |
Luis Carlos Cobo | 05e5e88 | 2008-03-31 16:00:13 -0700 | [diff] [blame] | 2205 | u8 *mesh_cfg, int mesh_config_len, int freq) |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2206 | { |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2207 | struct ieee80211_sta_bss *bss; |
| 2208 | |
Luis Carlos Cobo | 05e5e88 | 2008-03-31 16:00:13 -0700 | [diff] [blame] | 2209 | if (mesh_config_len != MESH_CFG_LEN) |
| 2210 | return NULL; |
| 2211 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2212 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
| 2213 | if (!bss) |
| 2214 | return NULL; |
| 2215 | |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 2216 | bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2217 | if (!bss->mesh_cfg) { |
| 2218 | kfree(bss); |
| 2219 | return NULL; |
| 2220 | } |
| 2221 | |
| 2222 | if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) { |
| 2223 | bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC); |
| 2224 | if (!bss->mesh_id) { |
| 2225 | kfree(bss->mesh_cfg); |
| 2226 | kfree(bss); |
| 2227 | return NULL; |
| 2228 | } |
| 2229 | memcpy(bss->mesh_id, mesh_id, mesh_id_len); |
| 2230 | } |
| 2231 | |
| 2232 | atomic_inc(&bss->users); |
| 2233 | atomic_inc(&bss->users); |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 2234 | memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2235 | bss->mesh_id_len = mesh_id_len; |
| 2236 | bss->freq = freq; |
| 2237 | spin_lock_bh(&local->sta_bss_lock); |
| 2238 | /* TODO: order by RSSI? */ |
| 2239 | list_add_tail(&bss->list, &local->sta_bss_list); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2240 | __ieee80211_rx_bss_hash_add(local, bss); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2241 | spin_unlock_bh(&local->sta_bss_lock); |
| 2242 | return bss; |
| 2243 | } |
| 2244 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2245 | |
| 2246 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) |
| 2247 | { |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 2248 | kfree(bss->ies); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2249 | kfree(bss_mesh_id(bss)); |
| 2250 | kfree(bss_mesh_cfg(bss)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2251 | kfree(bss); |
| 2252 | } |
| 2253 | |
| 2254 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2255 | static void ieee80211_rx_bss_put(struct ieee80211_local *local, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2256 | struct ieee80211_sta_bss *bss) |
| 2257 | { |
Pavel Emelyanov | 1ebebea | 2008-04-23 11:47:15 +0400 | [diff] [blame] | 2258 | local_bh_disable(); |
| 2259 | if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) { |
| 2260 | local_bh_enable(); |
| 2261 | return; |
| 2262 | } |
| 2263 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2264 | __ieee80211_rx_bss_hash_del(local, bss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2265 | list_del(&bss->list); |
| 2266 | spin_unlock_bh(&local->sta_bss_lock); |
| 2267 | ieee80211_rx_bss_free(bss); |
| 2268 | } |
| 2269 | |
| 2270 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2271 | void ieee80211_rx_bss_list_init(struct ieee80211_local *local) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2272 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2273 | spin_lock_init(&local->sta_bss_lock); |
| 2274 | INIT_LIST_HEAD(&local->sta_bss_list); |
| 2275 | } |
| 2276 | |
| 2277 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2278 | void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2279 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2280 | struct ieee80211_sta_bss *bss, *tmp; |
| 2281 | |
| 2282 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2283 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2284 | } |
| 2285 | |
| 2286 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2287 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2288 | struct ieee80211_if_sta *ifsta, |
| 2289 | struct ieee80211_sta_bss *bss) |
| 2290 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2291 | struct ieee80211_local *local = sdata->local; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2292 | int res, rates, i, j; |
| 2293 | struct sk_buff *skb; |
| 2294 | struct ieee80211_mgmt *mgmt; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2295 | u8 *pos; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2296 | struct ieee80211_supported_band *sband; |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 2297 | union iwreq_data wrqu; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2298 | |
| 2299 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 2300 | |
| 2301 | /* Remove possible STA entries from other IBSS networks. */ |
Johannes Berg | dc6676b | 2008-03-31 19:23:03 +0200 | [diff] [blame] | 2302 | sta_info_flush_delayed(sdata); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2303 | |
| 2304 | if (local->ops->reset_tsf) { |
| 2305 | /* Reset own TSF to allow time synchronization work. */ |
| 2306 | local->ops->reset_tsf(local_to_hw(local)); |
| 2307 | } |
| 2308 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2309 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2310 | if (res) |
| 2311 | return res; |
| 2312 | |
| 2313 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; |
| 2314 | |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2315 | sdata->drop_unencrypted = bss->capability & |
| 2316 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; |
| 2317 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2318 | res = ieee80211_set_freq(sdata, bss->freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2319 | |
Assaf Krauss | be038b3 | 2008-06-05 19:55:21 +0300 | [diff] [blame] | 2320 | if (res) |
| 2321 | return res; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2322 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2323 | /* Build IBSS probe response */ |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2324 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2325 | if (skb) { |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2326 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 2327 | |
| 2328 | mgmt = (struct ieee80211_mgmt *) |
| 2329 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); |
| 2330 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 2331 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 2332 | IEEE80211_STYPE_PROBE_RESP); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2333 | memset(mgmt->da, 0xff, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2334 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2335 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 2336 | mgmt->u.beacon.beacon_int = |
| 2337 | cpu_to_le16(local->hw.conf.beacon_int); |
Assaf Krauss | 4faeb86 | 2008-06-30 17:23:16 +0800 | [diff] [blame] | 2338 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2339 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
| 2340 | |
| 2341 | pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 2342 | *pos++ = WLAN_EID_SSID; |
| 2343 | *pos++ = ifsta->ssid_len; |
| 2344 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
| 2345 | |
| 2346 | rates = bss->supp_rates_len; |
| 2347 | if (rates > 8) |
| 2348 | rates = 8; |
| 2349 | pos = skb_put(skb, 2 + rates); |
| 2350 | *pos++ = WLAN_EID_SUPP_RATES; |
| 2351 | *pos++ = rates; |
| 2352 | memcpy(pos, bss->supp_rates, rates); |
| 2353 | |
| 2354 | if (bss->band == IEEE80211_BAND_2GHZ) { |
| 2355 | pos = skb_put(skb, 2 + 1); |
| 2356 | *pos++ = WLAN_EID_DS_PARAMS; |
| 2357 | *pos++ = 1; |
| 2358 | *pos++ = ieee80211_frequency_to_channel(bss->freq); |
| 2359 | } |
| 2360 | |
| 2361 | pos = skb_put(skb, 2 + 2); |
| 2362 | *pos++ = WLAN_EID_IBSS_PARAMS; |
| 2363 | *pos++ = 2; |
| 2364 | /* FIX: set ATIM window based on scan results */ |
| 2365 | *pos++ = 0; |
| 2366 | *pos++ = 0; |
| 2367 | |
| 2368 | if (bss->supp_rates_len > 8) { |
| 2369 | rates = bss->supp_rates_len - 8; |
| 2370 | pos = skb_put(skb, 2 + rates); |
| 2371 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 2372 | *pos++ = rates; |
| 2373 | memcpy(pos, &bss->supp_rates[8], rates); |
| 2374 | } |
| 2375 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2376 | ifsta->probe_resp = skb; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2377 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2378 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2379 | } |
| 2380 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2381 | rates = 0; |
| 2382 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 2383 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 2384 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; |
| 2385 | for (j = 0; j < sband->n_bitrates; j++) |
| 2386 | if (sband->bitrates[j].bitrate == bitrate) |
| 2387 | rates |= BIT(j); |
| 2388 | } |
| 2389 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
| 2390 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2391 | ieee80211_sta_def_wmm_params(sdata, bss, 1); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 2392 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2393 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2394 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 2395 | |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 2396 | memset(&wrqu, 0, sizeof(wrqu)); |
| 2397 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2398 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2399 | |
| 2400 | return res; |
| 2401 | } |
| 2402 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2403 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
| 2404 | struct ieee802_11_elems *elems, |
| 2405 | enum ieee80211_band band) |
| 2406 | { |
| 2407 | struct ieee80211_supported_band *sband; |
| 2408 | struct ieee80211_rate *bitrates; |
| 2409 | size_t num_rates; |
| 2410 | u64 supp_rates; |
| 2411 | int i, j; |
| 2412 | sband = local->hw.wiphy->bands[band]; |
| 2413 | |
| 2414 | if (!sband) { |
| 2415 | WARN_ON(1); |
| 2416 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 2417 | } |
| 2418 | |
| 2419 | bitrates = sband->bitrates; |
| 2420 | num_rates = sband->n_bitrates; |
| 2421 | supp_rates = 0; |
| 2422 | for (i = 0; i < elems->supp_rates_len + |
| 2423 | elems->ext_supp_rates_len; i++) { |
| 2424 | u8 rate = 0; |
| 2425 | int own_rate; |
| 2426 | if (i < elems->supp_rates_len) |
| 2427 | rate = elems->supp_rates[i]; |
| 2428 | else if (elems->ext_supp_rates) |
| 2429 | rate = elems->ext_supp_rates |
| 2430 | [i - elems->supp_rates_len]; |
| 2431 | own_rate = 5 * (rate & 0x7f); |
| 2432 | for (j = 0; j < num_rates; j++) |
| 2433 | if (bitrates[j].bitrate == own_rate) |
| 2434 | supp_rates |= BIT(j); |
| 2435 | } |
| 2436 | return supp_rates; |
| 2437 | } |
| 2438 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2439 | static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local, |
| 2440 | enum ieee80211_band band) |
| 2441 | { |
| 2442 | struct ieee80211_supported_band *sband; |
| 2443 | struct ieee80211_rate *bitrates; |
| 2444 | u64 mandatory_rates; |
| 2445 | enum ieee80211_rate_flags mandatory_flag; |
| 2446 | int i; |
| 2447 | |
| 2448 | sband = local->hw.wiphy->bands[band]; |
| 2449 | if (!sband) { |
| 2450 | WARN_ON(1); |
| 2451 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 2452 | } |
| 2453 | |
| 2454 | if (band == IEEE80211_BAND_2GHZ) |
| 2455 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; |
| 2456 | else |
| 2457 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; |
| 2458 | |
| 2459 | bitrates = sband->bitrates; |
| 2460 | mandatory_rates = 0; |
| 2461 | for (i = 0; i < sband->n_bitrates; i++) |
| 2462 | if (bitrates[i].flags & mandatory_flag) |
| 2463 | mandatory_rates |= BIT(i); |
| 2464 | return mandatory_rates; |
| 2465 | } |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 2466 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2467 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2468 | struct ieee80211_mgmt *mgmt, |
| 2469 | size_t len, |
| 2470 | struct ieee80211_rx_status *rx_status, |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2471 | struct ieee802_11_elems *elems) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2472 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2473 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2474 | int freq, clen; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2475 | struct ieee80211_sta_bss *bss; |
| 2476 | struct sta_info *sta; |
Johannes Berg | fab7d4a | 2008-03-16 18:42:44 +0100 | [diff] [blame] | 2477 | struct ieee80211_channel *channel; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2478 | u64 beacon_timestamp, rx_timestamp; |
| 2479 | u64 supp_rates = 0; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2480 | bool beacon = ieee80211_is_beacon(mgmt->frame_control); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2481 | enum ieee80211_band band = rx_status->band; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2482 | DECLARE_MAC_BUF(mac); |
| 2483 | DECLARE_MAC_BUF(mac2); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2484 | |
Johannes Berg | 5bda617 | 2008-09-08 11:05:10 +0200 | [diff] [blame] | 2485 | if (elems->ds_params && elems->ds_params_len == 1) |
| 2486 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); |
| 2487 | else |
| 2488 | freq = rx_status->freq; |
| 2489 | |
| 2490 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
| 2491 | |
| 2492 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) |
| 2493 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2494 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2495 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2496 | elems->mesh_config && mesh_matches_local(elems, sdata)) { |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2497 | supp_rates = ieee80211_sta_get_rates(local, elems, band); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2498 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2499 | mesh_neighbour_update(mgmt->sa, supp_rates, sdata, |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2500 | mesh_peer_accepts_plinks(elems)); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2501 | } |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2502 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2503 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates && |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2504 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2505 | supp_rates = ieee80211_sta_get_rates(local, elems, band); |
| 2506 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 2507 | rcu_read_lock(); |
| 2508 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2509 | sta = sta_info_get(local, mgmt->sa); |
| 2510 | if (sta) { |
| 2511 | u64 prev_rates; |
| 2512 | |
| 2513 | prev_rates = sta->supp_rates[band]; |
| 2514 | /* make sure mandatory rates are always added */ |
| 2515 | sta->supp_rates[band] = supp_rates | |
| 2516 | ieee80211_sta_get_mandatory_rates(local, band); |
| 2517 | |
| 2518 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2519 | if (sta->supp_rates[band] != prev_rates) |
| 2520 | printk(KERN_DEBUG "%s: updated supp_rates set " |
| 2521 | "for %s based on beacon info (0x%llx | " |
| 2522 | "0x%llx -> 0x%llx)\n", |
| 2523 | sdata->dev->name, print_mac(mac, sta->addr), |
| 2524 | (unsigned long long) prev_rates, |
| 2525 | (unsigned long long) supp_rates, |
| 2526 | (unsigned long long) sta->supp_rates[band]); |
| 2527 | #endif |
| 2528 | } else { |
| 2529 | ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid, |
| 2530 | mgmt->sa, supp_rates); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2531 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2532 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 2533 | rcu_read_unlock(); |
| 2534 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 2535 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2536 | #ifdef CONFIG_MAC80211_MESH |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2537 | if (elems->mesh_config) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2538 | bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id, |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2539 | elems->mesh_id_len, elems->mesh_config, freq); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2540 | else |
| 2541 | #endif |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2542 | bss = ieee80211_rx_bss_get(local, mgmt->bssid, freq, |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2543 | elems->ssid, elems->ssid_len); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2544 | if (!bss) { |
| 2545 | #ifdef CONFIG_MAC80211_MESH |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2546 | if (elems->mesh_config) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2547 | bss = ieee80211_rx_mesh_bss_add(local, elems->mesh_id, |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2548 | elems->mesh_id_len, elems->mesh_config, |
| 2549 | elems->mesh_config_len, freq); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2550 | else |
| 2551 | #endif |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2552 | bss = ieee80211_rx_bss_add(sdata, mgmt->bssid, freq, |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2553 | elems->ssid, elems->ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2554 | if (!bss) |
| 2555 | return; |
| 2556 | } else { |
| 2557 | #if 0 |
| 2558 | /* TODO: order by RSSI? */ |
| 2559 | spin_lock_bh(&local->sta_bss_lock); |
| 2560 | list_move_tail(&bss->list, &local->sta_bss_list); |
| 2561 | spin_unlock_bh(&local->sta_bss_lock); |
| 2562 | #endif |
| 2563 | } |
| 2564 | |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 2565 | /* save the ERP value so that it is available at association time */ |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2566 | if (elems->erp_info && elems->erp_info_len >= 1) { |
| 2567 | bss->erp_value = elems->erp_info[0]; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 2568 | bss->has_erp_value = 1; |
| 2569 | } |
| 2570 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2571 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
| 2572 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2573 | |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 2574 | if (elems->tim) { |
| 2575 | struct ieee80211_tim_ie *tim_ie = |
| 2576 | (struct ieee80211_tim_ie *)elems->tim; |
| 2577 | bss->dtim_period = tim_ie->dtim_period; |
| 2578 | } |
| 2579 | |
| 2580 | /* set default value for buggy APs */ |
| 2581 | if (!elems->tim || bss->dtim_period == 0) |
| 2582 | bss->dtim_period = 1; |
| 2583 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2584 | bss->supp_rates_len = 0; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2585 | if (elems->supp_rates) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2586 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2587 | if (clen > elems->supp_rates_len) |
| 2588 | clen = elems->supp_rates_len; |
| 2589 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2590 | clen); |
| 2591 | bss->supp_rates_len += clen; |
| 2592 | } |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2593 | if (elems->ext_supp_rates) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2594 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2595 | if (clen > elems->ext_supp_rates_len) |
| 2596 | clen = elems->ext_supp_rates_len; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2597 | memcpy(&bss->supp_rates[bss->supp_rates_len], |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2598 | elems->ext_supp_rates, clen); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2599 | bss->supp_rates_len += clen; |
| 2600 | } |
| 2601 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2602 | bss->band = band; |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 2603 | |
Johannes Berg | 5bda617 | 2008-09-08 11:05:10 +0200 | [diff] [blame] | 2604 | beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
| 2605 | |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 2606 | bss->timestamp = beacon_timestamp; |
| 2607 | bss->last_update = jiffies; |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 2608 | bss->signal = rx_status->signal; |
| 2609 | bss->noise = rx_status->noise; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 2610 | bss->qual = rx_status->qual; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2611 | if (!beacon) |
| 2612 | bss->last_probe_resp = jiffies; |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 2613 | /* |
| 2614 | * In STA mode, the remaining parameters should not be overridden |
| 2615 | * by beacons because they're not necessarily accurate there. |
| 2616 | */ |
| 2617 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2618 | bss->last_probe_resp && beacon) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2619 | ieee80211_rx_bss_put(local, bss); |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 2620 | return; |
| 2621 | } |
| 2622 | |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 2623 | if (bss->ies == NULL || bss->ies_len < elems->total_len) { |
| 2624 | kfree(bss->ies); |
| 2625 | bss->ies = kmalloc(elems->total_len, GFP_ATOMIC); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2626 | } |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 2627 | if (bss->ies) { |
| 2628 | memcpy(bss->ies, elems->ie_start, elems->total_len); |
| 2629 | bss->ies_len = elems->total_len; |
| 2630 | } else |
| 2631 | bss->ies_len = 0; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2632 | |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 2633 | bss->wmm_used = elems->wmm_param || elems->wmm_info; |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 2634 | |
| 2635 | /* check if we need to merge IBSS */ |
| 2636 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && |
| 2637 | !local->sta_sw_scanning && !local->sta_hw_scanning && |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 2638 | bss->capability & WLAN_CAPABILITY_IBSS && |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 2639 | bss->freq == local->oper_channel->center_freq && |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2640 | elems->ssid_len == sdata->u.sta.ssid_len && |
| 2641 | memcmp(elems->ssid, sdata->u.sta.ssid, |
| 2642 | sdata->u.sta.ssid_len) == 0) { |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 2643 | if (rx_status->flag & RX_FLAG_TSFT) { |
| 2644 | /* in order for correct IBSS merging we need mactime |
| 2645 | * |
| 2646 | * since mactime is defined as the time the first data |
| 2647 | * symbol of the frame hits the PHY, and the timestamp |
| 2648 | * of the beacon is defined as "the time that the data |
| 2649 | * symbol containing the first bit of the timestamp is |
| 2650 | * transmitted to the PHY plus the transmitting STA’s |
| 2651 | * delays through its local PHY from the MAC-PHY |
| 2652 | * interface to its interface with the WM" |
| 2653 | * (802.11 11.1.2) - equals the time this bit arrives at |
| 2654 | * the receiver - we have to take into account the |
| 2655 | * offset between the two. |
| 2656 | * e.g: at 1 MBit that means mactime is 192 usec earlier |
| 2657 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. |
| 2658 | */ |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2659 | int rate = local->hw.wiphy->bands[band]-> |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 2660 | bitrates[rx_status->rate_idx].bitrate; |
| 2661 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); |
| 2662 | } else if (local && local->ops && local->ops->get_tsf) |
| 2663 | /* second best option: get current TSF */ |
| 2664 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); |
| 2665 | else |
| 2666 | /* can't merge without knowing the TSF */ |
| 2667 | rx_timestamp = -1LLU; |
| 2668 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2669 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" |
| 2670 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", |
| 2671 | print_mac(mac, mgmt->sa), |
| 2672 | print_mac(mac2, mgmt->bssid), |
| 2673 | (unsigned long long)rx_timestamp, |
| 2674 | (unsigned long long)beacon_timestamp, |
| 2675 | (unsigned long long)(rx_timestamp - beacon_timestamp), |
| 2676 | jiffies); |
| 2677 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2678 | if (beacon_timestamp > rx_timestamp) { |
John W. Linville | 576fdea | 2008-08-26 20:33:34 -0400 | [diff] [blame] | 2679 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 2680 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
| 2681 | "local TSF - IBSS merge with BSSID %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2682 | sdata->dev->name, print_mac(mac, mgmt->bssid)); |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 2683 | #endif |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2684 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
| 2685 | ieee80211_ibss_add_sta(sdata, NULL, |
Vladimir Koutny | 87291c0 | 2008-06-13 16:50:44 +0200 | [diff] [blame] | 2686 | mgmt->bssid, mgmt->sa, |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 2687 | supp_rates); |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 2688 | } |
| 2689 | } |
| 2690 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2691 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2692 | } |
| 2693 | |
| 2694 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2695 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2696 | struct ieee80211_mgmt *mgmt, |
| 2697 | size_t len, |
| 2698 | struct ieee80211_rx_status *rx_status) |
| 2699 | { |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2700 | size_t baselen; |
| 2701 | struct ieee802_11_elems elems; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2702 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2703 | |
Tomas Winkler | 8e7cdbb | 2008-08-03 14:32:01 +0300 | [diff] [blame] | 2704 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
| 2705 | return; /* ignore ProbeResp to foreign address */ |
| 2706 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2707 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
| 2708 | if (baselen > len) |
| 2709 | return; |
| 2710 | |
| 2711 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, |
| 2712 | &elems); |
| 2713 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2714 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
| 2715 | |
| 2716 | /* direct probe may be part of the association flow */ |
| 2717 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, |
| 2718 | &ifsta->request)) { |
| 2719 | printk(KERN_DEBUG "%s direct probe responded\n", |
| 2720 | sdata->dev->name); |
| 2721 | ieee80211_authenticate(sdata, ifsta); |
| 2722 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2723 | } |
| 2724 | |
| 2725 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2726 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2727 | struct ieee80211_mgmt *mgmt, |
| 2728 | size_t len, |
| 2729 | struct ieee80211_rx_status *rx_status) |
| 2730 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2731 | struct ieee80211_if_sta *ifsta; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2732 | size_t baselen; |
| 2733 | struct ieee802_11_elems elems; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2734 | struct ieee80211_local *local = sdata->local; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2735 | struct ieee80211_conf *conf = &local->hw.conf; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2736 | u32 changed = 0; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2737 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 2738 | /* Process beacon from the current BSS */ |
| 2739 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; |
| 2740 | if (baselen > len) |
| 2741 | return; |
| 2742 | |
| 2743 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
| 2744 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2745 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2746 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 2747 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2748 | return; |
| 2749 | ifsta = &sdata->u.sta; |
| 2750 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2751 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2752 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
| 2753 | return; |
| 2754 | |
Reinette Chatre | d18ef29 | 2008-04-09 16:56:15 -0700 | [diff] [blame] | 2755 | /* Do not send changes to driver if we are scanning. This removes |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 2756 | * requirement that a driver's bss_info_changed/conf_tx functions |
| 2757 | * need to be atomic. |
| 2758 | * This is really ugly code, we should rewrite scanning and make |
| 2759 | * all this more understandable for humans. |
| 2760 | */ |
Reinette Chatre | d18ef29 | 2008-04-09 16:56:15 -0700 | [diff] [blame] | 2761 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
| 2762 | return; |
| 2763 | |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 2764 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
| 2765 | elems.wmm_param_len); |
| 2766 | |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 2767 | if (elems.erp_info && elems.erp_info_len >= 1) |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2768 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 2769 | else { |
| 2770 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); |
| 2771 | changed |= ieee80211_handle_protect_preamb(sdata, false, |
| 2772 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); |
| 2773 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2774 | |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2775 | if (elems.ht_cap_elem && elems.ht_info_elem && |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 2776 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2777 | struct ieee80211_ht_bss_info bss_info; |
| 2778 | |
| 2779 | ieee80211_ht_addt_info_ie_to_ht_bss_info( |
| 2780 | (struct ieee80211_ht_addt_info *) |
| 2781 | elems.ht_info_elem, &bss_info); |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 2782 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
| 2783 | &bss_info); |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 2784 | } |
| 2785 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2786 | ieee80211_bss_info_change_notify(sdata, changed); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2787 | } |
| 2788 | |
| 2789 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2790 | static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2791 | struct ieee80211_if_sta *ifsta, |
| 2792 | struct ieee80211_mgmt *mgmt, |
| 2793 | size_t len, |
| 2794 | struct ieee80211_rx_status *rx_status) |
| 2795 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2796 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2797 | int tx_last_beacon; |
| 2798 | struct sk_buff *skb; |
| 2799 | struct ieee80211_mgmt *resp; |
| 2800 | u8 *pos, *end; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2801 | DECLARE_MAC_BUF(mac); |
| 2802 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2803 | DECLARE_MAC_BUF(mac2); |
| 2804 | DECLARE_MAC_BUF(mac3); |
| 2805 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2806 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 2807 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2808 | ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2809 | len < 24 + 2 || !ifsta->probe_resp) |
| 2810 | return; |
| 2811 | |
| 2812 | if (local->ops->tx_last_beacon) |
| 2813 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); |
| 2814 | else |
| 2815 | tx_last_beacon = 1; |
| 2816 | |
| 2817 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2818 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
| 2819 | "%s (tx_last_beacon=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2820 | sdata->dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2821 | print_mac(mac3, mgmt->bssid), tx_last_beacon); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2822 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2823 | |
| 2824 | if (!tx_last_beacon) |
| 2825 | return; |
| 2826 | |
| 2827 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && |
| 2828 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) |
| 2829 | return; |
| 2830 | |
| 2831 | end = ((u8 *) mgmt) + len; |
| 2832 | pos = mgmt->u.probe_req.variable; |
| 2833 | if (pos[0] != WLAN_EID_SSID || |
| 2834 | pos + 2 + pos[1] > end) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 2835 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2836 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " |
| 2837 | "from %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2838 | sdata->dev->name, print_mac(mac, mgmt->sa)); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 2839 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2840 | return; |
| 2841 | } |
| 2842 | if (pos[1] != 0 && |
| 2843 | (pos[1] != ifsta->ssid_len || |
| 2844 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { |
| 2845 | /* Ignore ProbeReq for foreign SSID */ |
| 2846 | return; |
| 2847 | } |
| 2848 | |
| 2849 | /* Reply with ProbeResp */ |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 2850 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2851 | if (!skb) |
| 2852 | return; |
| 2853 | |
| 2854 | resp = (struct ieee80211_mgmt *) skb->data; |
| 2855 | memcpy(resp->da, mgmt->sa, ETH_ALEN); |
| 2856 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2857 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2858 | sdata->dev->name, print_mac(mac, resp->da)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2859 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2860 | ieee80211_sta_tx(sdata, skb, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2861 | } |
| 2862 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2863 | static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 4e20cb2 | 2007-12-19 01:31:24 +0100 | [diff] [blame] | 2864 | struct ieee80211_if_sta *ifsta, |
| 2865 | struct ieee80211_mgmt *mgmt, |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2866 | size_t len, |
| 2867 | struct ieee80211_rx_status *rx_status) |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2868 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2869 | struct ieee80211_local *local = sdata->local; |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2870 | |
Johannes Berg | 9c80d3d | 2008-09-08 15:41:59 +0200 | [diff] [blame] | 2871 | /* all categories we currently handle have action_code */ |
| 2872 | if (len < IEEE80211_MIN_ACTION_SIZE + 1) |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2873 | return; |
| 2874 | |
| 2875 | switch (mgmt->u.action.category) { |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 2876 | case WLAN_CATEGORY_SPECTRUM_MGMT: |
| 2877 | if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ) |
| 2878 | break; |
Johannes Berg | 5fd12d4 | 2008-09-08 16:31:48 +0200 | [diff] [blame] | 2879 | switch (mgmt->u.action.u.measurement.action_code) { |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 2880 | case WLAN_ACTION_SPCT_MSR_REQ: |
| 2881 | if (len < (IEEE80211_MIN_ACTION_SIZE + |
| 2882 | sizeof(mgmt->u.action.u.measurement))) |
| 2883 | break; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2884 | ieee80211_sta_process_measurement_req(sdata, mgmt, len); |
Assaf Krauss | b662348 | 2008-06-16 16:09:49 +0300 | [diff] [blame] | 2885 | break; |
| 2886 | } |
| 2887 | break; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2888 | case WLAN_CATEGORY_BACK: |
| 2889 | switch (mgmt->u.action.u.addba_req.action_code) { |
| 2890 | case WLAN_ACTION_ADDBA_REQ: |
| 2891 | if (len < (IEEE80211_MIN_ACTION_SIZE + |
| 2892 | sizeof(mgmt->u.action.u.addba_req))) |
| 2893 | break; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2894 | ieee80211_sta_process_addba_request(local, mgmt, len); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2895 | break; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 2896 | case WLAN_ACTION_ADDBA_RESP: |
| 2897 | if (len < (IEEE80211_MIN_ACTION_SIZE + |
| 2898 | sizeof(mgmt->u.action.u.addba_resp))) |
| 2899 | break; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2900 | ieee80211_sta_process_addba_resp(local, mgmt, len); |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 2901 | break; |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 2902 | case WLAN_ACTION_DELBA: |
| 2903 | if (len < (IEEE80211_MIN_ACTION_SIZE + |
| 2904 | sizeof(mgmt->u.action.u.delba))) |
| 2905 | break; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2906 | ieee80211_sta_process_delba(sdata, mgmt, len); |
Ron Rindjunsky | 688b88a | 2007-12-25 17:00:37 +0200 | [diff] [blame] | 2907 | break; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2908 | } |
| 2909 | break; |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2910 | case PLINK_CATEGORY: |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2911 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2912 | mesh_rx_plink_frame(sdata, mgmt, len, rx_status); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2913 | break; |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2914 | case MESH_PATH_SEL_CATEGORY: |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 2915 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2916 | mesh_rx_path_sel_frame(sdata, mgmt, len); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2917 | break; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2918 | } |
| 2919 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2920 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2921 | void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2922 | struct ieee80211_rx_status *rx_status) |
| 2923 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2924 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2925 | struct ieee80211_if_sta *ifsta; |
| 2926 | struct ieee80211_mgmt *mgmt; |
| 2927 | u16 fc; |
| 2928 | |
| 2929 | if (skb->len < 24) |
| 2930 | goto fail; |
| 2931 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2932 | ifsta = &sdata->u.sta; |
| 2933 | |
| 2934 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 2935 | fc = le16_to_cpu(mgmt->frame_control); |
| 2936 | |
| 2937 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2938 | case IEEE80211_STYPE_PROBE_REQ: |
| 2939 | case IEEE80211_STYPE_PROBE_RESP: |
| 2940 | case IEEE80211_STYPE_BEACON: |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 2941 | case IEEE80211_STYPE_ACTION: |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2942 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
| 2943 | case IEEE80211_STYPE_AUTH: |
| 2944 | case IEEE80211_STYPE_ASSOC_RESP: |
| 2945 | case IEEE80211_STYPE_REASSOC_RESP: |
| 2946 | case IEEE80211_STYPE_DEAUTH: |
| 2947 | case IEEE80211_STYPE_DISASSOC: |
| 2948 | skb_queue_tail(&ifsta->skb_queue, skb); |
| 2949 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2950 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2951 | } |
| 2952 | |
| 2953 | fail: |
| 2954 | kfree_skb(skb); |
| 2955 | } |
| 2956 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2957 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2958 | struct sk_buff *skb) |
| 2959 | { |
| 2960 | struct ieee80211_rx_status *rx_status; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2961 | struct ieee80211_if_sta *ifsta; |
| 2962 | struct ieee80211_mgmt *mgmt; |
| 2963 | u16 fc; |
| 2964 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2965 | ifsta = &sdata->u.sta; |
| 2966 | |
| 2967 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
| 2968 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 2969 | fc = le16_to_cpu(mgmt->frame_control); |
| 2970 | |
| 2971 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2972 | case IEEE80211_STYPE_PROBE_REQ: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2973 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2974 | rx_status); |
| 2975 | break; |
| 2976 | case IEEE80211_STYPE_PROBE_RESP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2977 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2978 | break; |
| 2979 | case IEEE80211_STYPE_BEACON: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2980 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2981 | break; |
| 2982 | case IEEE80211_STYPE_AUTH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2983 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2984 | break; |
| 2985 | case IEEE80211_STYPE_ASSOC_RESP: |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2986 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2987 | break; |
| 2988 | case IEEE80211_STYPE_REASSOC_RESP: |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2989 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2990 | break; |
| 2991 | case IEEE80211_STYPE_DEAUTH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2992 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2993 | break; |
| 2994 | case IEEE80211_STYPE_DISASSOC: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2995 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2996 | break; |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2997 | case IEEE80211_STYPE_ACTION: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2998 | ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status); |
Ron Rindjunsky | 9f985b0 | 2007-11-26 16:14:32 +0200 | [diff] [blame] | 2999 | break; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3000 | } |
| 3001 | |
| 3002 | kfree_skb(skb); |
| 3003 | } |
| 3004 | |
| 3005 | |
Johannes Berg | 9ae54c8 | 2008-01-31 19:48:20 +0100 | [diff] [blame] | 3006 | ieee80211_rx_result |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3007 | ieee80211_sta_rx_scan(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3008 | struct ieee80211_rx_status *rx_status) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3009 | { |
| 3010 | struct ieee80211_mgmt *mgmt; |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3011 | __le16 fc; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3012 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3013 | if (skb->len < 2) |
Johannes Berg | e4c26ad | 2008-01-31 19:48:21 +0100 | [diff] [blame] | 3014 | return RX_DROP_UNUSABLE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3015 | |
| 3016 | mgmt = (struct ieee80211_mgmt *) skb->data; |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3017 | fc = mgmt->frame_control; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3018 | |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3019 | if (ieee80211_is_ctl(fc)) |
Johannes Berg | 9ae54c8 | 2008-01-31 19:48:20 +0100 | [diff] [blame] | 3020 | return RX_CONTINUE; |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3021 | |
| 3022 | if (skb->len < 24) |
Johannes Berg | e4c26ad | 2008-01-31 19:48:21 +0100 | [diff] [blame] | 3023 | return RX_DROP_MONITOR; |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3024 | |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3025 | if (ieee80211_is_probe_resp(fc)) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3026 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3027 | dev_kfree_skb(skb); |
| 3028 | return RX_QUEUED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3029 | } |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3030 | |
| 3031 | if (ieee80211_is_beacon(fc)) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3032 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3033 | dev_kfree_skb(skb); |
| 3034 | return RX_QUEUED; |
| 3035 | } |
| 3036 | |
Johannes Berg | 9ae54c8 | 2008-01-31 19:48:20 +0100 | [diff] [blame] | 3037 | return RX_CONTINUE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3038 | } |
| 3039 | |
| 3040 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3041 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3042 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3043 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3044 | int active = 0; |
| 3045 | struct sta_info *sta; |
| 3046 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3047 | rcu_read_lock(); |
| 3048 | |
| 3049 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 3050 | if (sta->sdata == sdata && |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3051 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
| 3052 | jiffies)) { |
| 3053 | active++; |
| 3054 | break; |
| 3055 | } |
| 3056 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3057 | |
| 3058 | rcu_read_unlock(); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3059 | |
| 3060 | return active; |
| 3061 | } |
| 3062 | |
| 3063 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3064 | static void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3065 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3066 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3067 | struct sta_info *sta, *tmp; |
Michael Wu | be8755e | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 3068 | LIST_HEAD(tmp_list); |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3069 | DECLARE_MAC_BUF(mac); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3070 | unsigned long flags; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3071 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3072 | spin_lock_irqsave(&local->sta_lock, flags); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3073 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3074 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 3075 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3076 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3077 | sdata->dev->name, print_mac(mac, sta->addr)); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 3078 | #endif |
Luis Carlos Cobo | cb585bc | 2008-03-31 15:21:23 -0700 | [diff] [blame] | 3079 | __sta_info_unlink(&sta); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3080 | if (sta) |
| 3081 | list_add(&sta->list, &tmp_list); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3082 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3083 | spin_unlock_irqrestore(&local->sta_lock, flags); |
Michael Wu | be8755e | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 3084 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 3085 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
| 3086 | sta_info_destroy(sta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3087 | } |
| 3088 | |
| 3089 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3090 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3091 | struct ieee80211_if_sta *ifsta) |
| 3092 | { |
| 3093 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 3094 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3095 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
| 3096 | if (ieee80211_sta_active_ibss(sdata)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3097 | return; |
| 3098 | |
| 3099 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3100 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
| 3101 | ieee80211_sta_req_scan(sdata, ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3102 | } |
| 3103 | |
| 3104 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3105 | #ifdef CONFIG_MAC80211_MESH |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3106 | static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata, |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3107 | struct ieee80211_if_sta *ifsta) |
| 3108 | { |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3109 | bool free_plinks; |
| 3110 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3111 | ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); |
| 3112 | mesh_path_expire(sdata); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3113 | |
| 3114 | free_plinks = mesh_plink_availables(sdata); |
| 3115 | if (free_plinks != sdata->u.sta.accepting_plinks) |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3116 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3117 | |
| 3118 | mod_timer(&ifsta->timer, jiffies + |
| 3119 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); |
| 3120 | } |
| 3121 | |
| 3122 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3123 | void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3124 | { |
| 3125 | struct ieee80211_if_sta *ifsta; |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3126 | ifsta = &sdata->u.sta; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3127 | ifsta->state = IEEE80211_STA_MLME_MESH_UP; |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3128 | ieee80211_sta_timer((unsigned long)sdata); |
Luis Carlos Cobo | 56a6d13 | 2008-07-29 19:59:31 +0200 | [diff] [blame] | 3129 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3130 | } |
| 3131 | #endif |
| 3132 | |
| 3133 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3134 | void ieee80211_sta_timer(unsigned long data) |
| 3135 | { |
| 3136 | struct ieee80211_sub_if_data *sdata = |
| 3137 | (struct ieee80211_sub_if_data *) data; |
| 3138 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3139 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3140 | |
| 3141 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 3142 | queue_work(local->hw.workqueue, &ifsta->work); |
| 3143 | } |
| 3144 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3145 | void ieee80211_sta_work(struct work_struct *work) |
| 3146 | { |
| 3147 | struct ieee80211_sub_if_data *sdata = |
| 3148 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3149 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3150 | struct ieee80211_if_sta *ifsta; |
| 3151 | struct sk_buff *skb; |
| 3152 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3153 | if (!netif_running(sdata->dev)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3154 | return; |
| 3155 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3156 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3157 | return; |
| 3158 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 3159 | if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA && |
| 3160 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
| 3161 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3162 | return; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3163 | ifsta = &sdata->u.sta; |
| 3164 | |
| 3165 | while ((skb = skb_dequeue(&ifsta->skb_queue))) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3166 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3167 | |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3168 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 3169 | if (ifsta->preq_queue_len && |
| 3170 | time_after(jiffies, |
| 3171 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3172 | mesh_path_start_discovery(sdata); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3173 | #endif |
| 3174 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 3175 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
| 3176 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3177 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3178 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { |
Helmut Schaa | a0af5f1 | 2007-11-09 16:25:08 +0100 | [diff] [blame] | 3179 | if (ifsta->scan_ssid_len) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3180 | ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len); |
Helmut Schaa | a0af5f1 | 2007-11-09 16:25:08 +0100 | [diff] [blame] | 3181 | else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3182 | ieee80211_sta_start_scan(sdata, NULL, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3183 | return; |
| 3184 | } |
| 3185 | |
| 3186 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3187 | if (ieee80211_sta_config_auth(sdata, ifsta)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3188 | return; |
| 3189 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 3190 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) |
| 3191 | return; |
| 3192 | |
| 3193 | switch (ifsta->state) { |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3194 | case IEEE80211_STA_MLME_DISABLED: |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3195 | break; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 3196 | case IEEE80211_STA_MLME_DIRECT_PROBE: |
| 3197 | ieee80211_direct_probe(sdata, ifsta); |
| 3198 | break; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3199 | case IEEE80211_STA_MLME_AUTHENTICATE: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3200 | ieee80211_authenticate(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3201 | break; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3202 | case IEEE80211_STA_MLME_ASSOCIATE: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3203 | ieee80211_associate(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3204 | break; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3205 | case IEEE80211_STA_MLME_ASSOCIATED: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3206 | ieee80211_associated(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3207 | break; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3208 | case IEEE80211_STA_MLME_IBSS_SEARCH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3209 | ieee80211_sta_find_ibss(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3210 | break; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3211 | case IEEE80211_STA_MLME_IBSS_JOINED: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3212 | ieee80211_sta_merge_ibss(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3213 | break; |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3214 | #ifdef CONFIG_MAC80211_MESH |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3215 | case IEEE80211_STA_MLME_MESH_UP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3216 | ieee80211_mesh_housekeeping(sdata, ifsta); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3217 | break; |
| 3218 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3219 | default: |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 3220 | WARN_ON(1); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3221 | break; |
| 3222 | } |
| 3223 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3224 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3225 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3226 | "mixed-cell disabled - disassociate\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3227 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 3228 | ieee80211_set_disassoc(sdata, ifsta, false, true, |
| 3229 | WLAN_REASON_UNSPECIFIED); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3230 | } |
| 3231 | } |
| 3232 | |
| 3233 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3234 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3235 | struct ieee80211_if_sta *ifsta) |
| 3236 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3237 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3238 | |
| 3239 | if (local->ops->reset_tsf) { |
| 3240 | /* Reset own TSF to allow time synchronization work. */ |
| 3241 | local->ops->reset_tsf(local_to_hw(local)); |
| 3242 | } |
| 3243 | |
| 3244 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ |
| 3245 | |
| 3246 | |
| 3247 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 3248 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
| 3249 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 3250 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; |
| 3251 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 3252 | ifsta->auth_alg = WLAN_AUTH_LEAP; |
| 3253 | else |
| 3254 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3255 | ifsta->auth_transaction = -1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3256 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 3257 | ifsta->assoc_scan_tries = 0; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 3258 | ifsta->direct_probe_tries = 0; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 3259 | ifsta->auth_tries = 0; |
| 3260 | ifsta->assoc_tries = 0; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3261 | netif_carrier_off(sdata->dev); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3262 | } |
| 3263 | |
| 3264 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3265 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3266 | struct ieee80211_if_sta *ifsta) |
| 3267 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3268 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3269 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 3270 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3271 | return; |
| 3272 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3273 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
Tomas Winkler | 3b7ee69 | 2008-09-08 17:33:38 +0200 | [diff] [blame^] | 3274 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3275 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
Tomas Winkler | 3b7ee69 | 2008-09-08 17:33:38 +0200 | [diff] [blame^] | 3276 | IEEE80211_STA_AUTO_SSID_SEL))) { |
| 3277 | |
| 3278 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) |
| 3279 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 3280 | WLAN_REASON_DEAUTH_LEAVING); |
| 3281 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3282 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
| 3283 | queue_work(local->hw.workqueue, &ifsta->work); |
| 3284 | } |
| 3285 | } |
| 3286 | |
| 3287 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, |
| 3288 | const char *ssid, int ssid_len) |
| 3289 | { |
| 3290 | int tmp, hidden_ssid; |
| 3291 | |
Michael Wu | 4822570 | 2007-10-19 17:14:36 -0400 | [diff] [blame] | 3292 | if (ssid_len == ifsta->ssid_len && |
| 3293 | !memcmp(ifsta->ssid, ssid, ssid_len)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3294 | return 1; |
| 3295 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3296 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3297 | return 0; |
| 3298 | |
| 3299 | hidden_ssid = 1; |
| 3300 | tmp = ssid_len; |
| 3301 | while (tmp--) { |
| 3302 | if (ssid[tmp] != '\0') { |
| 3303 | hidden_ssid = 0; |
| 3304 | break; |
| 3305 | } |
| 3306 | } |
| 3307 | |
| 3308 | if (hidden_ssid && ifsta->ssid_len == ssid_len) |
| 3309 | return 1; |
| 3310 | |
| 3311 | if (ssid_len == 1 && ssid[0] == ' ') |
| 3312 | return 1; |
| 3313 | |
| 3314 | return 0; |
| 3315 | } |
| 3316 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3317 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3318 | struct ieee80211_if_sta *ifsta) |
| 3319 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3320 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3321 | struct ieee80211_sta_bss *bss, *selected = NULL; |
| 3322 | int top_rssi = 0, freq; |
| 3323 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3324 | spin_lock_bh(&local->sta_bss_lock); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3325 | freq = local->oper_channel->center_freq; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3326 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
| 3327 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) |
| 3328 | continue; |
| 3329 | |
Abhijeet Kolekar | 34a961f | 2008-05-09 09:35:41 -0700 | [diff] [blame] | 3330 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
| 3331 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 3332 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && |
| 3333 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ |
| 3334 | !!sdata->default_key)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3335 | continue; |
| 3336 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3337 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
| 3338 | bss->freq != freq) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3339 | continue; |
| 3340 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3341 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3342 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
| 3343 | continue; |
| 3344 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3345 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3346 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
| 3347 | continue; |
| 3348 | |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 3349 | if (!selected || top_rssi < bss->signal) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3350 | selected = bss; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 3351 | top_rssi = bss->signal; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3352 | } |
| 3353 | } |
| 3354 | if (selected) |
| 3355 | atomic_inc(&selected->users); |
| 3356 | spin_unlock_bh(&local->sta_bss_lock); |
| 3357 | |
| 3358 | if (selected) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3359 | ieee80211_set_freq(sdata, selected->freq); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3360 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3361 | ieee80211_sta_set_ssid(sdata, selected->ssid, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3362 | selected->ssid_len); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3363 | ieee80211_sta_set_bssid(sdata, selected->bssid); |
| 3364 | ieee80211_sta_def_wmm_params(sdata, selected, 0); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 3365 | |
| 3366 | /* Send out direct probe if no probe resp was received or |
| 3367 | * the one we have is outdated |
| 3368 | */ |
| 3369 | if (!selected->last_probe_resp || |
| 3370 | time_after(jiffies, selected->last_probe_resp |
| 3371 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
| 3372 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 3373 | else |
| 3374 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 3375 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 3376 | ieee80211_rx_bss_put(local, selected); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3377 | ieee80211_sta_reset_auth(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3378 | return 0; |
| 3379 | } else { |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 3380 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
| 3381 | ifsta->assoc_scan_tries++; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3382 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3383 | ieee80211_sta_start_scan(sdata, NULL, 0); |
John W. Linville | b9bf1e6 | 2007-08-07 16:33:15 -0400 | [diff] [blame] | 3384 | else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3385 | ieee80211_sta_start_scan(sdata, ifsta->ssid, |
John W. Linville | b9bf1e6 | 2007-08-07 16:33:15 -0400 | [diff] [blame] | 3386 | ifsta->ssid_len); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3387 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3388 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
| 3389 | } else |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3390 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3391 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3392 | return -1; |
| 3393 | } |
| 3394 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3395 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3396 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3397 | struct ieee80211_if_sta *ifsta) |
| 3398 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3399 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3400 | struct ieee80211_sta_bss *bss; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3401 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3402 | u8 bssid[ETH_ALEN], *pos; |
| 3403 | int i; |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 3404 | int ret; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3405 | DECLARE_MAC_BUF(mac); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3406 | |
| 3407 | #if 0 |
| 3408 | /* Easier testing, use fixed BSSID. */ |
| 3409 | memset(bssid, 0xfe, ETH_ALEN); |
| 3410 | #else |
| 3411 | /* Generate random, not broadcast, locally administered BSSID. Mix in |
| 3412 | * own MAC address to make sure that devices that do not have proper |
| 3413 | * random number generator get different BSSID. */ |
| 3414 | get_random_bytes(bssid, ETH_ALEN); |
| 3415 | for (i = 0; i < ETH_ALEN; i++) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3416 | bssid[i] ^= sdata->dev->dev_addr[i]; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3417 | bssid[0] &= ~0x01; |
| 3418 | bssid[0] |= 0x02; |
| 3419 | #endif |
| 3420 | |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3421 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3422 | sdata->dev->name, print_mac(mac, bssid)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3423 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3424 | bss = ieee80211_rx_bss_add(sdata, bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3425 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 3426 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3427 | if (!bss) |
| 3428 | return -ENOMEM; |
| 3429 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3430 | bss->band = local->hw.conf.channel->band; |
| 3431 | sband = local->hw.wiphy->bands[bss->band]; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3432 | |
| 3433 | if (local->hw.conf.beacon_int == 0) |
Tomas Winkler | dc0ae30 | 2008-06-12 22:38:37 +0300 | [diff] [blame] | 3434 | local->hw.conf.beacon_int = 100; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3435 | bss->beacon_int = local->hw.conf.beacon_int; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3436 | bss->last_update = jiffies; |
| 3437 | bss->capability = WLAN_CAPABILITY_IBSS; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 3438 | |
| 3439 | if (sdata->default_key) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3440 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 3441 | else |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3442 | sdata->drop_unencrypted = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 3443 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3444 | bss->supp_rates_len = sband->n_bitrates; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3445 | pos = bss->supp_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3446 | for (i = 0; i < sband->n_bitrates; i++) { |
| 3447 | int rate = sband->bitrates[i].bitrate; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3448 | *pos++ = (u8) (rate / 5); |
| 3449 | } |
| 3450 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3451 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 3452 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 3453 | return ret; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3454 | } |
| 3455 | |
| 3456 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3457 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3458 | struct ieee80211_if_sta *ifsta) |
| 3459 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3460 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3461 | struct ieee80211_sta_bss *bss; |
| 3462 | int found = 0; |
| 3463 | u8 bssid[ETH_ALEN]; |
| 3464 | int active_ibss; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3465 | DECLARE_MAC_BUF(mac); |
| 3466 | DECLARE_MAC_BUF(mac2); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3467 | |
| 3468 | if (ifsta->ssid_len == 0) |
| 3469 | return -EINVAL; |
| 3470 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3471 | active_ibss = ieee80211_sta_active_ibss(sdata); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3472 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 3473 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3474 | sdata->dev->name, active_ibss); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3475 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 3476 | spin_lock_bh(&local->sta_bss_lock); |
| 3477 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
| 3478 | if (ifsta->ssid_len != bss->ssid_len || |
| 3479 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 |
| 3480 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) |
| 3481 | continue; |
| 3482 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3483 | printk(KERN_DEBUG " bssid=%s found\n", |
| 3484 | print_mac(mac, bss->bssid)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3485 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 3486 | memcpy(bssid, bss->bssid, ETH_ALEN); |
| 3487 | found = 1; |
| 3488 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) |
| 3489 | break; |
| 3490 | } |
| 3491 | spin_unlock_bh(&local->sta_bss_lock); |
| 3492 | |
| 3493 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Vladimir Koutny | 6e43829 | 2008-07-07 14:23:01 +0200 | [diff] [blame] | 3494 | if (found) |
| 3495 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " |
| 3496 | "%s\n", print_mac(mac, bssid), |
| 3497 | print_mac(mac2, ifsta->bssid)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3498 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 3499 | |
| 3500 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 3501 | int ret; |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 3502 | int search_freq; |
| 3503 | |
| 3504 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
| 3505 | search_freq = bss->freq; |
| 3506 | else |
| 3507 | search_freq = local->hw.conf.channel->center_freq; |
| 3508 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3509 | bss = ieee80211_rx_bss_get(local, bssid, search_freq, |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 3510 | ifsta->ssid, ifsta->ssid_len); |
| 3511 | if (!bss) |
| 3512 | goto dont_join; |
| 3513 | |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3514 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3515 | " based on configured SSID\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3516 | sdata->dev->name, print_mac(mac, bssid)); |
| 3517 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 3518 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 3519 | return ret; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3520 | } |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 3521 | |
| 3522 | dont_join: |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3523 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 3524 | printk(KERN_DEBUG " did not try to join ibss\n"); |
| 3525 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 3526 | |
| 3527 | /* Selected IBSS not found in current scan results - try to scan */ |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3528 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3529 | !ieee80211_sta_active_ibss(sdata)) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3530 | mod_timer(&ifsta->timer, jiffies + |
| 3531 | IEEE80211_IBSS_MERGE_INTERVAL); |
| 3532 | } else if (time_after(jiffies, local->last_scan_completed + |
| 3533 | IEEE80211_SCAN_INTERVAL)) { |
| 3534 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3535 | "join\n", sdata->dev->name); |
| 3536 | return ieee80211_sta_req_scan(sdata, ifsta->ssid, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3537 | ifsta->ssid_len); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3538 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3539 | int interval = IEEE80211_SCAN_INTERVAL; |
| 3540 | |
| 3541 | if (time_after(jiffies, ifsta->ibss_join_req + |
| 3542 | IEEE80211_IBSS_JOIN_TIMEOUT)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3543 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3544 | (!(local->oper_channel->flags & |
| 3545 | IEEE80211_CHAN_NO_IBSS))) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3546 | return ieee80211_sta_create_ibss(sdata, ifsta); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3547 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3548 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3549 | " %d MHz\n", sdata->dev->name, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3550 | local->hw.conf.channel->center_freq); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3551 | } |
| 3552 | |
| 3553 | /* No IBSS found - decrease scan interval and continue |
| 3554 | * scanning. */ |
| 3555 | interval = IEEE80211_SCAN_INTERVAL_SLOW; |
| 3556 | } |
| 3557 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3558 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3559 | mod_timer(&ifsta->timer, jiffies + interval); |
| 3560 | return 0; |
| 3561 | } |
| 3562 | |
| 3563 | return 0; |
| 3564 | } |
| 3565 | |
| 3566 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3567 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3568 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3569 | struct ieee80211_if_sta *ifsta; |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3570 | int res; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3571 | |
| 3572 | if (len > IEEE80211_MAX_SSID_LEN) |
| 3573 | return -EINVAL; |
| 3574 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3575 | ifsta = &sdata->u.sta; |
| 3576 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3577 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
| 3578 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); |
| 3579 | memcpy(ifsta->ssid, ssid, len); |
| 3580 | ifsta->ssid_len = len; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3581 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3582 | |
| 3583 | res = 0; |
| 3584 | /* |
| 3585 | * Hack! MLME code needs to be cleaned up to have different |
| 3586 | * entry points for configuration and internal selection change |
| 3587 | */ |
| 3588 | if (netif_running(sdata->dev)) |
| 3589 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID); |
| 3590 | if (res) { |
| 3591 | printk(KERN_DEBUG "%s: Failed to config new SSID to " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3592 | "the low-level driver\n", sdata->dev->name); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3593 | return res; |
| 3594 | } |
| 3595 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3596 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3597 | if (len) |
| 3598 | ifsta->flags |= IEEE80211_STA_SSID_SET; |
| 3599 | else |
| 3600 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3601 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 3602 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3603 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3604 | ifsta->ibss_join_req = jiffies; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3605 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3606 | return ieee80211_sta_find_ibss(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3607 | } |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3608 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3609 | return 0; |
| 3610 | } |
| 3611 | |
| 3612 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3613 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3614 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3615 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 3616 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); |
| 3617 | *len = ifsta->ssid_len; |
| 3618 | return 0; |
| 3619 | } |
| 3620 | |
| 3621 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3622 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3623 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3624 | struct ieee80211_if_sta *ifsta; |
| 3625 | int res; |
| 3626 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3627 | ifsta = &sdata->u.sta; |
| 3628 | |
| 3629 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { |
| 3630 | memcpy(ifsta->bssid, bssid, ETH_ALEN); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 3631 | res = 0; |
| 3632 | /* |
| 3633 | * Hack! See also ieee80211_sta_set_ssid. |
| 3634 | */ |
| 3635 | if (netif_running(sdata->dev)) |
| 3636 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3637 | if (res) { |
| 3638 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3639 | "the low-level driver\n", sdata->dev->name); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3640 | return res; |
| 3641 | } |
| 3642 | } |
| 3643 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3644 | if (is_valid_ether_addr(bssid)) |
| 3645 | ifsta->flags |= IEEE80211_STA_BSSID_SET; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3646 | else |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3647 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
| 3648 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3649 | return 0; |
| 3650 | } |
| 3651 | |
| 3652 | |
| 3653 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, |
| 3654 | struct ieee80211_sub_if_data *sdata, |
| 3655 | int powersave) |
| 3656 | { |
| 3657 | struct sk_buff *skb; |
| 3658 | struct ieee80211_hdr *nullfunc; |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3659 | __le16 fc; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3660 | |
| 3661 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); |
| 3662 | if (!skb) { |
| 3663 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " |
| 3664 | "frame\n", sdata->dev->name); |
| 3665 | return; |
| 3666 | } |
| 3667 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 3668 | |
| 3669 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); |
| 3670 | memset(nullfunc, 0, 24); |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3671 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | |
| 3672 | IEEE80211_FCTL_TODS); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3673 | if (powersave) |
Harvey Harrison | 4e3996f | 2008-06-22 16:45:32 -0700 | [diff] [blame] | 3674 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); |
| 3675 | nullfunc->frame_control = fc; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3676 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); |
| 3677 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); |
| 3678 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); |
| 3679 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3680 | ieee80211_sta_tx(sdata, skb, 0); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3681 | } |
| 3682 | |
| 3683 | |
Johannes Berg | 69d3b6f | 2008-03-05 10:58:40 +0100 | [diff] [blame] | 3684 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
| 3685 | { |
| 3686 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
| 3687 | ieee80211_vif_is_mesh(&sdata->vif)) |
| 3688 | ieee80211_sta_timer((unsigned long)sdata); |
| 3689 | } |
| 3690 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3691 | void ieee80211_scan_completed(struct ieee80211_hw *hw) |
| 3692 | { |
| 3693 | struct ieee80211_local *local = hw_to_local(hw); |
| 3694 | struct net_device *dev = local->scan_dev; |
| 3695 | struct ieee80211_sub_if_data *sdata; |
| 3696 | union iwreq_data wrqu; |
| 3697 | |
| 3698 | local->last_scan_completed = jiffies; |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3699 | memset(&wrqu, 0, sizeof(wrqu)); |
| 3700 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3701 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3702 | if (local->sta_hw_scanning) { |
| 3703 | local->sta_hw_scanning = 0; |
Mohamed Abbas | 675ef58 | 2008-03-20 08:14:29 -0700 | [diff] [blame] | 3704 | if (ieee80211_hw_config(local)) |
| 3705 | printk(KERN_DEBUG "%s: failed to restore operational " |
| 3706 | "channel after scan\n", dev->name); |
Johannes Berg | 69d3b6f | 2008-03-05 10:58:40 +0100 | [diff] [blame] | 3707 | /* Restart STA timer for HW scan case */ |
| 3708 | rcu_read_lock(); |
| 3709 | list_for_each_entry_rcu(sdata, &local->interfaces, list) |
| 3710 | ieee80211_restart_sta_timer(sdata); |
| 3711 | rcu_read_unlock(); |
| 3712 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3713 | goto done; |
| 3714 | } |
| 3715 | |
| 3716 | local->sta_sw_scanning = 0; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3717 | if (ieee80211_hw_config(local)) |
Bruno Randolf | 4b50e38 | 2007-11-16 17:04:01 +0900 | [diff] [blame] | 3718 | printk(KERN_DEBUG "%s: failed to restore operational " |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3719 | "channel after scan\n", dev->name); |
| 3720 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 3721 | |
| 3722 | netif_tx_lock_bh(local->mdev); |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 3723 | netif_addr_lock(local->mdev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 3724 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; |
| 3725 | local->ops->configure_filter(local_to_hw(local), |
| 3726 | FIF_BCN_PRBRESP_PROMISC, |
| 3727 | &local->filter_flags, |
| 3728 | local->mdev->mc_count, |
| 3729 | local->mdev->mc_list); |
| 3730 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 3731 | netif_addr_unlock(local->mdev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 3732 | netif_tx_unlock_bh(local->mdev); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3733 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 3734 | rcu_read_lock(); |
| 3735 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 69d3b6f | 2008-03-05 10:58:40 +0100 | [diff] [blame] | 3736 | /* Tell AP we're back */ |
| 3737 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
| 3738 | sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) |
| 3739 | ieee80211_send_nullfunc(local, sdata, 0); |
Mattias Nissler | 14042cb | 2007-06-08 15:31:13 +0200 | [diff] [blame] | 3740 | |
Johannes Berg | 69d3b6f | 2008-03-05 10:58:40 +0100 | [diff] [blame] | 3741 | ieee80211_restart_sta_timer(sdata); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 3742 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3743 | netif_wake_queue(sdata->dev); |
| 3744 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 3745 | rcu_read_unlock(); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3746 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3747 | done: |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3748 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 3749 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3750 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3751 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 3752 | (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3753 | !ieee80211_sta_active_ibss(sdata))) |
| 3754 | ieee80211_sta_find_ibss(sdata, ifsta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3755 | } |
| 3756 | } |
| 3757 | EXPORT_SYMBOL(ieee80211_scan_completed); |
| 3758 | |
| 3759 | void ieee80211_sta_scan_work(struct work_struct *work) |
| 3760 | { |
| 3761 | struct ieee80211_local *local = |
| 3762 | container_of(work, struct ieee80211_local, scan_work.work); |
| 3763 | struct net_device *dev = local->scan_dev; |
| 3764 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3765 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3766 | struct ieee80211_channel *chan; |
| 3767 | int skip; |
| 3768 | unsigned long next_delay = 0; |
| 3769 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3770 | if (!local->sta_sw_scanning) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3771 | return; |
| 3772 | |
| 3773 | switch (local->scan_state) { |
| 3774 | case SCAN_SET_CHANNEL: |
Johannes Berg | 69d464d | 2008-01-28 17:08:56 +0100 | [diff] [blame] | 3775 | /* |
| 3776 | * Get current scan band. scan_band may be IEEE80211_NUM_BANDS |
| 3777 | * after we successfully scanned the last channel of the last |
| 3778 | * band (and the last band is supported by the hw) |
| 3779 | */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3780 | if (local->scan_band < IEEE80211_NUM_BANDS) |
| 3781 | sband = local->hw.wiphy->bands[local->scan_band]; |
| 3782 | else |
| 3783 | sband = NULL; |
| 3784 | |
Johannes Berg | 69d464d | 2008-01-28 17:08:56 +0100 | [diff] [blame] | 3785 | /* |
| 3786 | * If we are at an unsupported band and have more bands |
| 3787 | * left to scan, advance to the next supported one. |
| 3788 | */ |
| 3789 | while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3790 | local->scan_band++; |
| 3791 | sband = local->hw.wiphy->bands[local->scan_band]; |
| 3792 | local->scan_channel_idx = 0; |
| 3793 | } |
| 3794 | |
Johannes Berg | 69d464d | 2008-01-28 17:08:56 +0100 | [diff] [blame] | 3795 | /* if no more bands/channels left, complete scan */ |
| 3796 | if (!sband || local->scan_channel_idx >= sband->n_channels) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3797 | ieee80211_scan_completed(local_to_hw(local)); |
| 3798 | return; |
| 3799 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3800 | skip = 0; |
| 3801 | chan = &sband->channels[local->scan_channel_idx]; |
| 3802 | |
| 3803 | if (chan->flags & IEEE80211_CHAN_DISABLED || |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 3804 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3805 | chan->flags & IEEE80211_CHAN_NO_IBSS)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3806 | skip = 1; |
| 3807 | |
| 3808 | if (!skip) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3809 | local->scan_channel = chan; |
| 3810 | if (ieee80211_hw_config(local)) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3811 | printk(KERN_DEBUG "%s: failed to set freq to " |
| 3812 | "%d MHz for scan\n", dev->name, |
| 3813 | chan->center_freq); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3814 | skip = 1; |
| 3815 | } |
| 3816 | } |
| 3817 | |
Johannes Berg | 69d464d | 2008-01-28 17:08:56 +0100 | [diff] [blame] | 3818 | /* advance state machine to next channel/band */ |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3819 | local->scan_channel_idx++; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3820 | if (local->scan_channel_idx >= sband->n_channels) { |
Johannes Berg | 69d464d | 2008-01-28 17:08:56 +0100 | [diff] [blame] | 3821 | /* |
| 3822 | * scan_band may end up == IEEE80211_NUM_BANDS, but |
| 3823 | * we'll catch that case above and complete the scan |
| 3824 | * if that is the case. |
| 3825 | */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3826 | local->scan_band++; |
| 3827 | local->scan_channel_idx = 0; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3828 | } |
| 3829 | |
| 3830 | if (skip) |
| 3831 | break; |
| 3832 | |
| 3833 | next_delay = IEEE80211_PROBE_DELAY + |
| 3834 | usecs_to_jiffies(local->hw.channel_change_time); |
| 3835 | local->scan_state = SCAN_SEND_PROBE; |
| 3836 | break; |
| 3837 | case SCAN_SEND_PROBE: |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3838 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3839 | local->scan_state = SCAN_SET_CHANNEL; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3840 | |
| 3841 | if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
| 3842 | break; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3843 | ieee80211_send_probe_req(sdata, NULL, local->scan_ssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3844 | local->scan_ssid_len); |
| 3845 | next_delay = IEEE80211_CHANNEL_TIME; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3846 | break; |
| 3847 | } |
| 3848 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3849 | if (local->sta_sw_scanning) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3850 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
| 3851 | next_delay); |
| 3852 | } |
| 3853 | |
| 3854 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3855 | static int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3856 | u8 *ssid, size_t ssid_len) |
| 3857 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3858 | struct ieee80211_local *local = scan_sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3859 | struct ieee80211_sub_if_data *sdata; |
| 3860 | |
| 3861 | if (ssid_len > IEEE80211_MAX_SSID_LEN) |
| 3862 | return -EINVAL; |
| 3863 | |
| 3864 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) |
| 3865 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS |
| 3866 | * BSSID: MACAddress |
| 3867 | * SSID |
| 3868 | * ScanType: ACTIVE, PASSIVE |
| 3869 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting |
| 3870 | * a Probe frame during active scanning |
| 3871 | * ChannelList |
| 3872 | * MinChannelTime (>= ProbeDelay), in TU |
| 3873 | * MaxChannelTime: (>= MinChannelTime), in TU |
| 3874 | */ |
| 3875 | |
| 3876 | /* MLME-SCAN.confirm |
| 3877 | * BSSDescriptionSet |
| 3878 | * ResultCode: SUCCESS, INVALID_PARAMETERS |
| 3879 | */ |
| 3880 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3881 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3882 | if (local->scan_dev == scan_sdata->dev) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3883 | return 0; |
| 3884 | return -EBUSY; |
| 3885 | } |
| 3886 | |
| 3887 | if (local->ops->hw_scan) { |
| 3888 | int rc = local->ops->hw_scan(local_to_hw(local), |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3889 | ssid, ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3890 | if (!rc) { |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3891 | local->sta_hw_scanning = 1; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3892 | local->scan_dev = scan_sdata->dev; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3893 | } |
| 3894 | return rc; |
| 3895 | } |
| 3896 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3897 | local->sta_sw_scanning = 1; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3898 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 3899 | rcu_read_lock(); |
| 3900 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3901 | netif_stop_queue(sdata->dev); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 3902 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 3903 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3904 | ieee80211_send_nullfunc(local, sdata, 1); |
| 3905 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 3906 | rcu_read_unlock(); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3907 | |
| 3908 | if (ssid) { |
| 3909 | local->scan_ssid_len = ssid_len; |
| 3910 | memcpy(local->scan_ssid, ssid, ssid_len); |
| 3911 | } else |
| 3912 | local->scan_ssid_len = 0; |
| 3913 | local->scan_state = SCAN_SET_CHANNEL; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3914 | local->scan_channel_idx = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3915 | local->scan_band = IEEE80211_BAND_2GHZ; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3916 | local->scan_dev = scan_sdata->dev; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3917 | |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 3918 | netif_addr_lock_bh(local->mdev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 3919 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; |
| 3920 | local->ops->configure_filter(local_to_hw(local), |
| 3921 | FIF_BCN_PRBRESP_PROMISC, |
| 3922 | &local->filter_flags, |
| 3923 | local->mdev->mc_count, |
| 3924 | local->mdev->mc_list); |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 3925 | netif_addr_unlock_bh(local->mdev); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3926 | |
| 3927 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ |
| 3928 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
| 3929 | IEEE80211_CHANNEL_TIME); |
| 3930 | |
| 3931 | return 0; |
| 3932 | } |
| 3933 | |
| 3934 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3935 | int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3936 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3937 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3938 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3939 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 3940 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3941 | return ieee80211_sta_start_scan(sdata, ssid, ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3942 | |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 3943 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 3944 | if (local->scan_dev == sdata->dev) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3945 | return 0; |
| 3946 | return -EBUSY; |
| 3947 | } |
| 3948 | |
Helmut Schaa | a0af5f1 | 2007-11-09 16:25:08 +0100 | [diff] [blame] | 3949 | ifsta->scan_ssid_len = ssid_len; |
| 3950 | if (ssid_len) |
| 3951 | memcpy(ifsta->scan_ssid, ssid, ssid_len); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3952 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
| 3953 | queue_work(local->hw.workqueue, &ifsta->work); |
| 3954 | return 0; |
| 3955 | } |
| 3956 | |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 3957 | |
| 3958 | static void ieee80211_sta_add_scan_ies(struct iw_request_info *info, |
| 3959 | struct ieee80211_sta_bss *bss, |
| 3960 | char **current_ev, char *end_buf) |
| 3961 | { |
| 3962 | u8 *pos, *end, *next; |
| 3963 | struct iw_event iwe; |
| 3964 | |
| 3965 | if (bss == NULL || bss->ies == NULL) |
| 3966 | return; |
| 3967 | |
| 3968 | /* |
| 3969 | * If needed, fragment the IEs buffer (at IE boundaries) into short |
| 3970 | * enough fragments to fit into IW_GENERIC_IE_MAX octet messages. |
| 3971 | */ |
| 3972 | pos = bss->ies; |
| 3973 | end = pos + bss->ies_len; |
| 3974 | |
| 3975 | while (end - pos > IW_GENERIC_IE_MAX) { |
| 3976 | next = pos + 2 + pos[1]; |
| 3977 | while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX) |
| 3978 | next = next + 2 + next[1]; |
| 3979 | |
| 3980 | memset(&iwe, 0, sizeof(iwe)); |
| 3981 | iwe.cmd = IWEVGENIE; |
| 3982 | iwe.u.data.length = next - pos; |
| 3983 | *current_ev = iwe_stream_add_point(info, *current_ev, |
| 3984 | end_buf, &iwe, pos); |
| 3985 | |
| 3986 | pos = next; |
| 3987 | } |
| 3988 | |
| 3989 | if (end > pos) { |
| 3990 | memset(&iwe, 0, sizeof(iwe)); |
| 3991 | iwe.cmd = IWEVGENIE; |
| 3992 | iwe.u.data.length = end - pos; |
| 3993 | *current_ev = iwe_stream_add_point(info, *current_ev, |
| 3994 | end_buf, &iwe, pos); |
| 3995 | } |
| 3996 | } |
| 3997 | |
| 3998 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3999 | static char * |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4000 | ieee80211_sta_scan_result(struct ieee80211_local *local, |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4001 | struct iw_request_info *info, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4002 | struct ieee80211_sta_bss *bss, |
| 4003 | char *current_ev, char *end_buf) |
| 4004 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4005 | struct iw_event iwe; |
| 4006 | |
| 4007 | if (time_after(jiffies, |
| 4008 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) |
| 4009 | return current_ev; |
| 4010 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4011 | memset(&iwe, 0, sizeof(iwe)); |
| 4012 | iwe.cmd = SIOCGIWAP; |
| 4013 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; |
| 4014 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4015 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4016 | IW_EV_ADDR_LEN); |
| 4017 | |
| 4018 | memset(&iwe, 0, sizeof(iwe)); |
| 4019 | iwe.cmd = SIOCGIWESSID; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 4020 | if (bss_mesh_cfg(bss)) { |
| 4021 | iwe.u.data.length = bss_mesh_id_len(bss); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4022 | iwe.u.data.flags = 1; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4023 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
| 4024 | &iwe, bss_mesh_id(bss)); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4025 | } else { |
| 4026 | iwe.u.data.length = bss->ssid_len; |
| 4027 | iwe.u.data.flags = 1; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4028 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
| 4029 | &iwe, bss->ssid); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4030 | } |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4031 | |
Luis Carlos Cobo | 1d1b535 | 2008-02-29 12:15:28 -0800 | [diff] [blame] | 4032 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) |
| 4033 | || bss_mesh_cfg(bss)) { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4034 | memset(&iwe, 0, sizeof(iwe)); |
| 4035 | iwe.cmd = SIOCGIWMODE; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 4036 | if (bss_mesh_cfg(bss)) |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4037 | iwe.u.mode = IW_MODE_MESH; |
| 4038 | else if (bss->capability & WLAN_CAPABILITY_ESS) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4039 | iwe.u.mode = IW_MODE_MASTER; |
| 4040 | else |
| 4041 | iwe.u.mode = IW_MODE_ADHOC; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4042 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
| 4043 | &iwe, IW_EV_UINT_LEN); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4044 | } |
| 4045 | |
| 4046 | memset(&iwe, 0, sizeof(iwe)); |
| 4047 | iwe.cmd = SIOCGIWFREQ; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 4048 | iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); |
| 4049 | iwe.u.freq.e = 0; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4050 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4051 | IW_EV_FREQ_LEN); |
| 4052 | |
| 4053 | memset(&iwe, 0, sizeof(iwe)); |
Tomas Winkler | 9381be0 | 2008-05-23 01:36:36 +0300 | [diff] [blame] | 4054 | iwe.cmd = SIOCGIWFREQ; |
| 4055 | iwe.u.freq.m = bss->freq; |
| 4056 | iwe.u.freq.e = 6; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4057 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
Tomas Winkler | 9381be0 | 2008-05-23 01:36:36 +0300 | [diff] [blame] | 4058 | IW_EV_FREQ_LEN); |
| 4059 | memset(&iwe, 0, sizeof(iwe)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4060 | iwe.cmd = IWEVQUAL; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 4061 | iwe.u.qual.qual = bss->qual; |
| 4062 | iwe.u.qual.level = bss->signal; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4063 | iwe.u.qual.noise = bss->noise; |
| 4064 | iwe.u.qual.updated = local->wstats_flags; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4065 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4066 | IW_EV_QUAL_LEN); |
| 4067 | |
| 4068 | memset(&iwe, 0, sizeof(iwe)); |
| 4069 | iwe.cmd = SIOCGIWENCODE; |
| 4070 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) |
| 4071 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; |
| 4072 | else |
| 4073 | iwe.u.data.flags = IW_ENCODE_DISABLED; |
| 4074 | iwe.u.data.length = 0; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4075 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
| 4076 | &iwe, ""); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4077 | |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 4078 | ieee80211_sta_add_scan_ies(info, bss, ¤t_ev, end_buf); |
Emmanuel Grumbach | e623157 | 2008-05-27 20:00:11 +0300 | [diff] [blame] | 4079 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4080 | if (bss && bss->supp_rates_len > 0) { |
| 4081 | /* display all supported rates in readable format */ |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4082 | char *p = current_ev + iwe_stream_lcp_len(info); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4083 | int i; |
| 4084 | |
| 4085 | memset(&iwe, 0, sizeof(iwe)); |
| 4086 | iwe.cmd = SIOCGIWRATE; |
| 4087 | /* Those two flags are ignored... */ |
| 4088 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; |
| 4089 | |
| 4090 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 4091 | iwe.u.bitrate.value = ((bss->supp_rates[i] & |
| 4092 | 0x7f) * 500000); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4093 | p = iwe_stream_add_value(info, current_ev, p, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4094 | end_buf, &iwe, IW_EV_PARAM_LEN); |
| 4095 | } |
| 4096 | current_ev = p; |
| 4097 | } |
| 4098 | |
| 4099 | if (bss) { |
| 4100 | char *buf; |
| 4101 | buf = kmalloc(30, GFP_ATOMIC); |
| 4102 | if (buf) { |
| 4103 | memset(&iwe, 0, sizeof(iwe)); |
| 4104 | iwe.cmd = IWEVCUSTOM; |
| 4105 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); |
| 4106 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4107 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4108 | end_buf, |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4109 | &iwe, buf); |
Emmanuel Grumbach | bf998f6 | 2008-06-24 13:38:00 +0300 | [diff] [blame] | 4110 | memset(&iwe, 0, sizeof(iwe)); |
| 4111 | iwe.cmd = IWEVCUSTOM; |
| 4112 | sprintf(buf, " Last beacon: %dms ago", |
| 4113 | jiffies_to_msecs(jiffies - bss->last_update)); |
| 4114 | iwe.u.data.length = strlen(buf); |
| 4115 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4116 | end_buf, &iwe, buf); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4117 | kfree(buf); |
| 4118 | } |
| 4119 | } |
| 4120 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 4121 | if (bss_mesh_cfg(bss)) { |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4122 | char *buf; |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 4123 | u8 *cfg = bss_mesh_cfg(bss); |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4124 | buf = kmalloc(50, GFP_ATOMIC); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4125 | if (buf) { |
| 4126 | memset(&iwe, 0, sizeof(iwe)); |
| 4127 | iwe.cmd = IWEVCUSTOM; |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 4128 | sprintf(buf, "Mesh network (version %d)", cfg[0]); |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4129 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4130 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4131 | end_buf, |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4132 | &iwe, buf); |
| 4133 | sprintf(buf, "Path Selection Protocol ID: " |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 4134 | "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], |
| 4135 | cfg[4]); |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4136 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4137 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4138 | end_buf, |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4139 | &iwe, buf); |
| 4140 | sprintf(buf, "Path Selection Metric ID: " |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 4141 | "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], |
| 4142 | cfg[8]); |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4143 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4144 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4145 | end_buf, |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4146 | &iwe, buf); |
| 4147 | sprintf(buf, "Congestion Control Mode ID: " |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 4148 | "0x%02X%02X%02X%02X", cfg[9], cfg[10], |
| 4149 | cfg[11], cfg[12]); |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4150 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4151 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4152 | end_buf, |
Luis Carlos Cobo | 4f5d4c4 | 2008-02-29 12:32:46 -0800 | [diff] [blame] | 4153 | &iwe, buf); |
| 4154 | sprintf(buf, "Channel Precedence: " |
John W. Linville | 2473670 | 2008-04-08 14:15:46 -0400 | [diff] [blame] | 4155 | "0x%02X%02X%02X%02X", cfg[13], cfg[14], |
| 4156 | cfg[15], cfg[16]); |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4157 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4158 | current_ev = iwe_stream_add_point(info, current_ev, |
| 4159 | end_buf, |
Luis Carlos Cobo | f709fc6 | 2008-02-23 15:17:12 +0100 | [diff] [blame] | 4160 | &iwe, buf); |
| 4161 | kfree(buf); |
| 4162 | } |
| 4163 | } |
| 4164 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4165 | return current_ev; |
| 4166 | } |
| 4167 | |
| 4168 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4169 | int ieee80211_sta_scan_results(struct ieee80211_local *local, |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4170 | struct iw_request_info *info, |
| 4171 | char *buf, size_t len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4172 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4173 | char *current_ev = buf; |
| 4174 | char *end_buf = buf + len; |
| 4175 | struct ieee80211_sta_bss *bss; |
| 4176 | |
| 4177 | spin_lock_bh(&local->sta_bss_lock); |
| 4178 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
| 4179 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { |
| 4180 | spin_unlock_bh(&local->sta_bss_lock); |
| 4181 | return -E2BIG; |
| 4182 | } |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4183 | current_ev = ieee80211_sta_scan_result(local, info, bss, |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 4184 | current_ev, end_buf); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4185 | } |
| 4186 | spin_unlock_bh(&local->sta_bss_lock); |
| 4187 | return current_ev - buf; |
| 4188 | } |
| 4189 | |
| 4190 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4191 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4192 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4193 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 4194 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4195 | kfree(ifsta->extra_ie); |
| 4196 | if (len == 0) { |
| 4197 | ifsta->extra_ie = NULL; |
| 4198 | ifsta->extra_ie_len = 0; |
| 4199 | return 0; |
| 4200 | } |
| 4201 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); |
| 4202 | if (!ifsta->extra_ie) { |
| 4203 | ifsta->extra_ie_len = 0; |
| 4204 | return -ENOMEM; |
| 4205 | } |
| 4206 | memcpy(ifsta->extra_ie, ie, len); |
| 4207 | ifsta->extra_ie_len = len; |
| 4208 | return 0; |
| 4209 | } |
| 4210 | |
| 4211 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4212 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 4213 | struct sk_buff *skb, u8 *bssid, |
Vladimir Koutny | 87291c0 | 2008-06-13 16:50:44 +0200 | [diff] [blame] | 4214 | u8 *addr, u64 supp_rates) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4215 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4216 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4217 | struct sta_info *sta; |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 4218 | DECLARE_MAC_BUF(mac); |
Vladimir Koutny | 87291c0 | 2008-06-13 16:50:44 +0200 | [diff] [blame] | 4219 | int band = local->hw.conf.channel->band; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4220 | |
| 4221 | /* TODO: Could consider removing the least recently used entry and |
| 4222 | * allow new one to be added. */ |
| 4223 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { |
| 4224 | if (net_ratelimit()) { |
| 4225 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4226 | "entry %s\n", sdata->dev->name, print_mac(mac, addr)); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4227 | } |
| 4228 | return NULL; |
| 4229 | } |
| 4230 | |
Emmanuel Grumbach | 1e18863 | 2008-07-10 17:54:14 +0300 | [diff] [blame] | 4231 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
Vladimir Koutny | 87291c0 | 2008-06-13 16:50:44 +0200 | [diff] [blame] | 4232 | return NULL; |
| 4233 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 4234 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 4235 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4236 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 4237 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4238 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 4239 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
| 4240 | if (!sta) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4241 | return NULL; |
| 4242 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 4243 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 4244 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 4245 | /* make sure mandatory rates are always added */ |
| 4246 | sta->supp_rates[band] = supp_rates | |
| 4247 | ieee80211_sta_get_mandatory_rates(local, band); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4248 | |
| 4249 | rate_control_rate_init(sta, local); |
| 4250 | |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 4251 | if (sta_info_insert(sta)) |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 4252 | return NULL; |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 4253 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 4254 | return sta; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4255 | } |
| 4256 | |
| 4257 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4258 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4259 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4260 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 4261 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 4262 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4263 | sdata->dev->name, reason); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4264 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 4265 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
| 4266 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4267 | return -EINVAL; |
| 4268 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 4269 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4270 | return 0; |
| 4271 | } |
| 4272 | |
| 4273 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4274 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4275 | { |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4276 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 4277 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 4278 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4279 | sdata->dev->name, reason); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4280 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 4281 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4282 | return -EINVAL; |
| 4283 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 4284 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4285 | return -1; |
| 4286 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 4287 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4288 | return 0; |
| 4289 | } |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 4290 | |
| 4291 | void ieee80211_notify_mac(struct ieee80211_hw *hw, |
| 4292 | enum ieee80211_notification_types notif_type) |
| 4293 | { |
| 4294 | struct ieee80211_local *local = hw_to_local(hw); |
| 4295 | struct ieee80211_sub_if_data *sdata; |
| 4296 | |
| 4297 | switch (notif_type) { |
| 4298 | case IEEE80211_NOTIFY_RE_ASSOC: |
| 4299 | rcu_read_lock(); |
| 4300 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 4301 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
| 4302 | continue; |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 4303 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 4304 | ieee80211_sta_req_auth(sdata, &sdata->u.sta); |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 4305 | } |
| 4306 | rcu_read_unlock(); |
| 4307 | break; |
| 4308 | } |
| 4309 | } |
| 4310 | EXPORT_SYMBOL(ieee80211_notify_mac); |