Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * BSS client mode implementation |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 3 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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 | |
Geert Uytterhoeven | 5b323ed | 2007-05-08 18:40:27 -0700 | [diff] [blame] | 14 | #include <linux/delay.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 15 | #include <linux/if_ether.h> |
| 16 | #include <linux/skbuff.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 17 | #include <linux/if_arp.h> |
| 18 | #include <linux/wireless.h> |
| 19 | #include <linux/random.h> |
| 20 | #include <linux/etherdevice.h> |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 21 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 22 | #include <net/iw_handler.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 23 | #include <net/mac80211.h> |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 24 | #include <asm/unaligned.h> |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 25 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 26 | #include "ieee80211_i.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 27 | #include "rate.h" |
| 28 | #include "led.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 29 | |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 30 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 31 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
| 32 | #define IEEE80211_AUTH_MAX_TRIES 3 |
| 33 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) |
| 34 | #define IEEE80211_ASSOC_MAX_TRIES 3 |
| 35 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) |
| 36 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
| 37 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) |
| 38 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) |
| 39 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) |
Dan Williams | 872ba53 | 2008-06-04 13:59:34 -0400 | [diff] [blame] | 40 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 41 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 42 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) |
| 43 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) |
| 44 | |
| 45 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 |
| 46 | |
| 47 | |
Johannes Berg | 5484e23 | 2008-09-08 17:44:27 +0200 | [diff] [blame] | 48 | /* utils */ |
| 49 | static int ecw2cw(int ecw) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 50 | { |
Johannes Berg | 5484e23 | 2008-09-08 17:44:27 +0200 | [diff] [blame] | 51 | return (1 << ecw) - 1; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 52 | } |
| 53 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 54 | static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 55 | { |
| 56 | u8 *end, *pos; |
| 57 | |
| 58 | pos = bss->ies; |
| 59 | if (pos == NULL) |
| 60 | return NULL; |
| 61 | end = pos + bss->ies_len; |
| 62 | |
| 63 | while (pos + 1 < end) { |
| 64 | if (pos + 2 + pos[1] > end) |
| 65 | break; |
| 66 | if (pos[0] == ie) |
| 67 | return pos; |
| 68 | pos += 2 + pos[1]; |
| 69 | } |
| 70 | |
| 71 | return NULL; |
| 72 | } |
| 73 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 74 | static int ieee80211_compatible_rates(struct ieee80211_bss *bss, |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 75 | struct ieee80211_supported_band *sband, |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 76 | u32 *rates) |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 77 | { |
| 78 | int i, j, count; |
| 79 | *rates = 0; |
| 80 | count = 0; |
| 81 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 82 | int rate = (bss->supp_rates[i] & 0x7F) * 5; |
| 83 | |
| 84 | for (j = 0; j < sband->n_bitrates; j++) |
| 85 | if (sband->bitrates[j].bitrate == rate) { |
| 86 | *rates |= BIT(j); |
| 87 | count++; |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | return count; |
| 93 | } |
| 94 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 95 | /* also used by mesh code */ |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 96 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 97 | struct ieee802_11_elems *elems, |
| 98 | enum ieee80211_band band) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 99 | { |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 100 | struct ieee80211_supported_band *sband; |
| 101 | struct ieee80211_rate *bitrates; |
| 102 | size_t num_rates; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 103 | u32 supp_rates; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 104 | int i, j; |
| 105 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 106 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 107 | if (!sband) { |
| 108 | WARN_ON(1); |
| 109 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 110 | } |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 111 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 112 | bitrates = sband->bitrates; |
| 113 | num_rates = sband->n_bitrates; |
| 114 | supp_rates = 0; |
| 115 | for (i = 0; i < elems->supp_rates_len + |
| 116 | elems->ext_supp_rates_len; i++) { |
| 117 | u8 rate = 0; |
| 118 | int own_rate; |
| 119 | if (i < elems->supp_rates_len) |
| 120 | rate = elems->supp_rates[i]; |
| 121 | else if (elems->ext_supp_rates) |
| 122 | rate = elems->ext_supp_rates |
| 123 | [i - elems->supp_rates_len]; |
| 124 | own_rate = 5 * (rate & 0x7f); |
| 125 | for (j = 0; j < num_rates; j++) |
| 126 | if (bitrates[j].bitrate == own_rate) |
| 127 | supp_rates |= BIT(j); |
| 128 | } |
| 129 | return supp_rates; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 130 | } |
| 131 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 132 | /* frame sending functions */ |
| 133 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 134 | static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len) |
| 135 | { |
| 136 | if (ies) |
| 137 | memcpy(skb_put(skb, ies_len), ies, ies_len); |
| 138 | } |
| 139 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 140 | /* also used by scanning code */ |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 141 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
| 142 | u8 *ssid, size_t ssid_len) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 143 | { |
| 144 | struct ieee80211_local *local = sdata->local; |
| 145 | struct ieee80211_supported_band *sband; |
| 146 | struct sk_buff *skb; |
| 147 | struct ieee80211_mgmt *mgmt; |
| 148 | u8 *pos, *supp_rates, *esupp_rates = NULL; |
| 149 | int i; |
| 150 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 151 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + |
| 152 | sdata->u.sta.ie_probereq_len); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 153 | if (!skb) { |
| 154 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
| 155 | "request\n", sdata->dev->name); |
| 156 | return; |
| 157 | } |
| 158 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 159 | |
| 160 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 161 | memset(mgmt, 0, 24); |
| 162 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 163 | IEEE80211_STYPE_PROBE_REQ); |
| 164 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 165 | if (dst) { |
| 166 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 167 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
| 168 | } else { |
| 169 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 170 | memset(mgmt->bssid, 0xff, ETH_ALEN); |
| 171 | } |
| 172 | pos = skb_put(skb, 2 + ssid_len); |
| 173 | *pos++ = WLAN_EID_SSID; |
| 174 | *pos++ = ssid_len; |
| 175 | memcpy(pos, ssid, ssid_len); |
| 176 | |
| 177 | supp_rates = skb_put(skb, 2); |
| 178 | supp_rates[0] = WLAN_EID_SUPP_RATES; |
| 179 | supp_rates[1] = 0; |
| 180 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 181 | |
| 182 | for (i = 0; i < sband->n_bitrates; i++) { |
| 183 | struct ieee80211_rate *rate = &sband->bitrates[i]; |
| 184 | if (esupp_rates) { |
| 185 | pos = skb_put(skb, 1); |
| 186 | esupp_rates[1]++; |
| 187 | } else if (supp_rates[1] == 8) { |
| 188 | esupp_rates = skb_put(skb, 3); |
| 189 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; |
| 190 | esupp_rates[1] = 1; |
| 191 | pos = &esupp_rates[2]; |
| 192 | } else { |
| 193 | pos = skb_put(skb, 1); |
| 194 | supp_rates[1]++; |
| 195 | } |
| 196 | *pos = rate->bitrate / 5; |
| 197 | } |
| 198 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 199 | add_extra_ies(skb, sdata->u.sta.ie_probereq, |
| 200 | sdata->u.sta.ie_probereq_len); |
| 201 | |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 202 | ieee80211_tx_skb(sdata, skb, 0); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 203 | } |
| 204 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 205 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
| 206 | struct ieee80211_if_sta *ifsta, |
| 207 | int transaction, u8 *extra, size_t extra_len, |
| 208 | int encrypt) |
| 209 | { |
| 210 | struct ieee80211_local *local = sdata->local; |
| 211 | struct sk_buff *skb; |
| 212 | struct ieee80211_mgmt *mgmt; |
| 213 | |
| 214 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 215 | sizeof(*mgmt) + 6 + extra_len + |
| 216 | sdata->u.sta.ie_auth_len); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 217 | if (!skb) { |
| 218 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " |
| 219 | "frame\n", sdata->dev->name); |
| 220 | return; |
| 221 | } |
| 222 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 223 | |
| 224 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 225 | memset(mgmt, 0, 24 + 6); |
| 226 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 227 | IEEE80211_STYPE_AUTH); |
| 228 | if (encrypt) |
| 229 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 230 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 231 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 232 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 233 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); |
| 234 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
| 235 | ifsta->auth_transaction = transaction + 1; |
| 236 | mgmt->u.auth.status_code = cpu_to_le16(0); |
| 237 | if (extra) |
| 238 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 239 | add_extra_ies(skb, sdata->u.sta.ie_auth, sdata->u.sta.ie_auth_len); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 240 | |
| 241 | ieee80211_tx_skb(sdata, skb, encrypt); |
| 242 | } |
| 243 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 244 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
| 245 | struct ieee80211_if_sta *ifsta) |
| 246 | { |
| 247 | struct ieee80211_local *local = sdata->local; |
| 248 | struct sk_buff *skb; |
| 249 | struct ieee80211_mgmt *mgmt; |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 250 | u8 *pos, *ies, *ht_ie, *e_ies; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 251 | int i, len, count, rates_len, supp_rates_len; |
| 252 | u16 capab; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 253 | struct ieee80211_bss *bss; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 254 | int wmm = 0; |
| 255 | struct ieee80211_supported_band *sband; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 256 | u32 rates = 0; |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 257 | size_t e_ies_len; |
| 258 | |
| 259 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
| 260 | e_ies = sdata->u.sta.ie_reassocreq; |
| 261 | e_ies_len = sdata->u.sta.ie_reassocreq_len; |
| 262 | } else { |
| 263 | e_ies = sdata->u.sta.ie_assocreq; |
| 264 | e_ies_len = sdata->u.sta.ie_assocreq_len; |
| 265 | } |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 266 | |
| 267 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 268 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 269 | ifsta->ssid_len + e_ies_len); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 270 | if (!skb) { |
| 271 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " |
| 272 | "frame\n", sdata->dev->name); |
| 273 | return; |
| 274 | } |
| 275 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 276 | |
| 277 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 278 | |
| 279 | capab = ifsta->capab; |
| 280 | |
| 281 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { |
| 282 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) |
| 283 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
| 284 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) |
| 285 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; |
| 286 | } |
| 287 | |
| 288 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
| 289 | local->hw.conf.channel->center_freq, |
| 290 | ifsta->ssid, ifsta->ssid_len); |
| 291 | if (bss) { |
| 292 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) |
| 293 | capab |= WLAN_CAPABILITY_PRIVACY; |
| 294 | if (bss->wmm_used) |
| 295 | wmm = 1; |
| 296 | |
| 297 | /* get all rates supported by the device and the AP as |
| 298 | * some APs don't like getting a superset of their rates |
| 299 | * in the association request (e.g. D-Link DAP 1353 in |
| 300 | * b-only mode) */ |
| 301 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); |
| 302 | |
| 303 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
| 304 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
| 305 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
| 306 | |
| 307 | ieee80211_rx_bss_put(local, bss); |
| 308 | } else { |
| 309 | rates = ~0; |
| 310 | rates_len = sband->n_bitrates; |
| 311 | } |
| 312 | |
| 313 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 314 | memset(mgmt, 0, 24); |
| 315 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 316 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 317 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 318 | |
| 319 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
| 320 | skb_put(skb, 10); |
| 321 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 322 | IEEE80211_STYPE_REASSOC_REQ); |
| 323 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); |
| 324 | mgmt->u.reassoc_req.listen_interval = |
| 325 | cpu_to_le16(local->hw.conf.listen_interval); |
| 326 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, |
| 327 | ETH_ALEN); |
| 328 | } else { |
| 329 | skb_put(skb, 4); |
| 330 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 331 | IEEE80211_STYPE_ASSOC_REQ); |
| 332 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); |
Rami Rosen | 1355412 | 2008-12-16 22:38:29 +0200 | [diff] [blame] | 333 | mgmt->u.assoc_req.listen_interval = |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 334 | cpu_to_le16(local->hw.conf.listen_interval); |
| 335 | } |
| 336 | |
| 337 | /* SSID */ |
| 338 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 339 | *pos++ = WLAN_EID_SSID; |
| 340 | *pos++ = ifsta->ssid_len; |
| 341 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
| 342 | |
| 343 | /* add all rates which were marked to be used above */ |
| 344 | supp_rates_len = rates_len; |
| 345 | if (supp_rates_len > 8) |
| 346 | supp_rates_len = 8; |
| 347 | |
| 348 | len = sband->n_bitrates; |
| 349 | pos = skb_put(skb, supp_rates_len + 2); |
| 350 | *pos++ = WLAN_EID_SUPP_RATES; |
| 351 | *pos++ = supp_rates_len; |
| 352 | |
| 353 | count = 0; |
| 354 | for (i = 0; i < sband->n_bitrates; i++) { |
| 355 | if (BIT(i) & rates) { |
| 356 | int rate = sband->bitrates[i].bitrate; |
| 357 | *pos++ = (u8) (rate / 5); |
| 358 | if (++count == 8) |
| 359 | break; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | if (rates_len > count) { |
| 364 | pos = skb_put(skb, rates_len - count + 2); |
| 365 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 366 | *pos++ = rates_len - count; |
| 367 | |
| 368 | for (i++; i < sband->n_bitrates; i++) { |
| 369 | if (BIT(i) & rates) { |
| 370 | int rate = sband->bitrates[i].bitrate; |
| 371 | *pos++ = (u8) (rate / 5); |
| 372 | } |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
| 377 | /* 1. power capabilities */ |
| 378 | pos = skb_put(skb, 4); |
| 379 | *pos++ = WLAN_EID_PWR_CAPABILITY; |
| 380 | *pos++ = 2; |
| 381 | *pos++ = 0; /* min tx power */ |
| 382 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ |
| 383 | |
| 384 | /* 2. supported channels */ |
| 385 | /* TODO: get this in reg domain format */ |
| 386 | pos = skb_put(skb, 2 * sband->n_channels + 2); |
| 387 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; |
| 388 | *pos++ = 2 * sband->n_channels; |
| 389 | for (i = 0; i < sband->n_channels; i++) { |
| 390 | *pos++ = ieee80211_frequency_to_channel( |
| 391 | sband->channels[i].center_freq); |
| 392 | *pos++ = 1; /* one channel in the subband*/ |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | if (ifsta->extra_ie) { |
| 397 | pos = skb_put(skb, ifsta->extra_ie_len); |
| 398 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); |
| 399 | } |
| 400 | |
| 401 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
| 402 | pos = skb_put(skb, 9); |
| 403 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; |
| 404 | *pos++ = 7; /* len */ |
| 405 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ |
| 406 | *pos++ = 0x50; |
| 407 | *pos++ = 0xf2; |
| 408 | *pos++ = 2; /* WME */ |
| 409 | *pos++ = 0; /* WME info */ |
| 410 | *pos++ = 1; /* WME ver */ |
| 411 | *pos++ = 0; |
| 412 | } |
| 413 | |
| 414 | /* wmm support is a must to HT */ |
Vasanthakumar Thiagarajan | eb46936 | 2008-12-23 21:30:50 +0530 | [diff] [blame] | 415 | /* |
| 416 | * IEEE802.11n does not allow TKIP/WEP as pairwise |
| 417 | * ciphers in HT mode. We still associate in non-ht |
| 418 | * mode (11a/b/g) if any one of these ciphers is |
| 419 | * configured as pairwise. |
| 420 | */ |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 421 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 422 | sband->ht_cap.ht_supported && |
| 423 | (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && |
Vasanthakumar Thiagarajan | eb46936 | 2008-12-23 21:30:50 +0530 | [diff] [blame] | 424 | ht_ie[1] >= sizeof(struct ieee80211_ht_info) && |
| 425 | (!(ifsta->flags & IEEE80211_STA_TKIP_WEP_USED))) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 426 | struct ieee80211_ht_info *ht_info = |
| 427 | (struct ieee80211_ht_info *)(ht_ie + 2); |
| 428 | u16 cap = sband->ht_cap.cap; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 429 | __le16 tmp; |
| 430 | u32 flags = local->hw.conf.channel->flags; |
| 431 | |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 432 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
| 433 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 434 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 435 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 436 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 437 | } |
| 438 | break; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 439 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 440 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 441 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 442 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 443 | } |
| 444 | break; |
| 445 | } |
| 446 | |
| 447 | tmp = cpu_to_le16(cap); |
| 448 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
| 449 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 450 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 451 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 452 | memcpy(pos, &tmp, sizeof(u16)); |
| 453 | pos += sizeof(u16); |
| 454 | /* TODO: needs a define here for << 2 */ |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 455 | *pos++ = sband->ht_cap.ampdu_factor | |
| 456 | (sband->ht_cap.ampdu_density << 2); |
| 457 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 458 | } |
| 459 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 460 | add_extra_ies(skb, e_ies, e_ies_len); |
| 461 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 462 | kfree(ifsta->assocreq_ies); |
| 463 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; |
| 464 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
| 465 | if (ifsta->assocreq_ies) |
| 466 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); |
| 467 | |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 468 | ieee80211_tx_skb(sdata, skb, 0); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 472 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
| 473 | u16 stype, u16 reason) |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 474 | { |
| 475 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 476 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 477 | struct sk_buff *skb; |
| 478 | struct ieee80211_mgmt *mgmt; |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 479 | u8 *ies; |
| 480 | size_t ies_len; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 481 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 482 | if (stype == IEEE80211_STYPE_DEAUTH) { |
| 483 | ies = sdata->u.sta.ie_deauth; |
| 484 | ies_len = sdata->u.sta.ie_deauth_len; |
| 485 | } else { |
| 486 | ies = sdata->u.sta.ie_disassoc; |
| 487 | ies_len = sdata->u.sta.ie_disassoc_len; |
| 488 | } |
| 489 | |
| 490 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + |
| 491 | ies_len); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 492 | if (!skb) { |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 493 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
| 494 | "deauth/disassoc frame\n", sdata->dev->name); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 495 | return; |
| 496 | } |
| 497 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 498 | |
| 499 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 500 | memset(mgmt, 0, 24); |
| 501 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 502 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 503 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 504 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 505 | skb_put(skb, 2); |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 506 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 507 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
| 508 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 509 | add_extra_ies(skb, ies, ies_len); |
| 510 | |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 511 | ieee80211_tx_skb(sdata, skb, ifsta->flags & IEEE80211_STA_MFP_ENABLED); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 512 | } |
| 513 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 514 | /* MLME */ |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 515 | static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 516 | struct ieee80211_bss *bss) |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 517 | { |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 518 | struct ieee80211_local *local = sdata->local; |
| 519 | int i, have_higher_than_11mbit = 0; |
| 520 | |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 521 | /* cf. IEEE 802.11 9.2.12 */ |
| 522 | for (i = 0; i < bss->supp_rates_len; i++) |
| 523 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) |
| 524 | have_higher_than_11mbit = 1; |
| 525 | |
| 526 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 527 | have_higher_than_11mbit) |
| 528 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 529 | else |
| 530 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
| 531 | |
Johannes Berg | 3d35f7c | 2008-09-09 12:54:11 +0200 | [diff] [blame] | 532 | ieee80211_set_wmm_default(sdata); |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 533 | } |
| 534 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 535 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 536 | struct ieee80211_if_sta *ifsta, |
| 537 | u8 *wmm_param, size_t wmm_param_len) |
| 538 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 539 | struct ieee80211_tx_queue_params params; |
| 540 | size_t left; |
| 541 | int count; |
| 542 | u8 *pos; |
| 543 | |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 544 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
| 545 | return; |
| 546 | |
| 547 | if (!wmm_param) |
| 548 | return; |
| 549 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 550 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
| 551 | return; |
| 552 | count = wmm_param[6] & 0x0f; |
| 553 | if (count == ifsta->wmm_last_param_set) |
| 554 | return; |
| 555 | ifsta->wmm_last_param_set = count; |
| 556 | |
| 557 | pos = wmm_param + 8; |
| 558 | left = wmm_param_len - 8; |
| 559 | |
| 560 | memset(¶ms, 0, sizeof(params)); |
| 561 | |
| 562 | if (!local->ops->conf_tx) |
| 563 | return; |
| 564 | |
| 565 | local->wmm_acm = 0; |
| 566 | for (; left >= 4; left -= 4, pos += 4) { |
| 567 | int aci = (pos[0] >> 5) & 0x03; |
| 568 | int acm = (pos[0] >> 4) & 0x01; |
| 569 | int queue; |
| 570 | |
| 571 | switch (aci) { |
| 572 | case 1: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 573 | queue = 3; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 574 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 575 | local->wmm_acm |= BIT(0) | BIT(3); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 576 | break; |
| 577 | case 2: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 578 | queue = 1; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 579 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 580 | local->wmm_acm |= BIT(4) | BIT(5); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 581 | break; |
| 582 | case 3: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 583 | queue = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 584 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 585 | local->wmm_acm |= BIT(6) | BIT(7); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 586 | break; |
| 587 | case 0: |
| 588 | default: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 589 | queue = 2; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 590 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 591 | local->wmm_acm |= BIT(1) | BIT(2); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 592 | break; |
| 593 | } |
| 594 | |
| 595 | params.aifs = pos[0] & 0x0f; |
| 596 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); |
| 597 | params.cw_min = ecw2cw(pos[1] & 0x0f); |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 598 | params.txop = get_unaligned_le16(pos + 2); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 599 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 600 | 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] | 601 | "cWmin=%d cWmax=%d txop=%d\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 602 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 603 | params.cw_max, params.txop); |
| 604 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 605 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
| 606 | * AC for now) */ |
| 607 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { |
| 608 | printk(KERN_DEBUG "%s: failed to set TX queue " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 609 | "parameters for queue %d\n", local->mdev->name, queue); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 610 | } |
| 611 | } |
| 612 | } |
| 613 | |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 614 | static bool check_tim(struct ieee802_11_elems *elems, u16 aid, bool *is_mc) |
| 615 | { |
| 616 | u8 mask; |
| 617 | u8 index, indexn1, indexn2; |
| 618 | struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim; |
| 619 | |
| 620 | aid &= 0x3fff; |
| 621 | index = aid / 8; |
| 622 | mask = 1 << (aid & 7); |
| 623 | |
| 624 | if (tim->bitmap_ctrl & 0x01) |
| 625 | *is_mc = true; |
| 626 | |
| 627 | indexn1 = tim->bitmap_ctrl & 0xfe; |
| 628 | indexn2 = elems->tim_len + indexn1 - 4; |
| 629 | |
| 630 | if (index < indexn1 || index > indexn2) |
| 631 | return false; |
| 632 | |
| 633 | index -= indexn1; |
| 634 | |
| 635 | return !!(tim->virtual_map[index] & mask); |
| 636 | } |
| 637 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 638 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
| 639 | u16 capab, bool erp_valid, u8 erp) |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 640 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 641 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 642 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 643 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 644 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 645 | u32 changed = 0; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 646 | bool use_protection; |
| 647 | bool use_short_preamble; |
| 648 | bool use_short_slot; |
| 649 | |
| 650 | if (erp_valid) { |
| 651 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; |
| 652 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; |
| 653 | } else { |
| 654 | use_protection = false; |
| 655 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); |
| 656 | } |
| 657 | |
| 658 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 659 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 660 | if (use_protection != bss_conf->use_cts_prot) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 661 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 662 | if (net_ratelimit()) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 663 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 664 | sdata->dev->name, |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 665 | use_protection ? "enabled" : "disabled", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 666 | ifsta->bssid); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 667 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 668 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 669 | bss_conf->use_cts_prot = use_protection; |
| 670 | changed |= BSS_CHANGED_ERP_CTS_PROT; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 671 | } |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 672 | |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 673 | if (use_short_preamble != bss_conf->use_short_preamble) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 674 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 675 | if (net_ratelimit()) { |
| 676 | printk(KERN_DEBUG "%s: switched to %s barker preamble" |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 677 | " (BSSID=%pM)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 678 | sdata->dev->name, |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 679 | use_short_preamble ? "short" : "long", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 680 | ifsta->bssid); |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 681 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 682 | #endif |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 683 | bss_conf->use_short_preamble = use_short_preamble; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 684 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 685 | } |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 686 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 687 | if (use_short_slot != bss_conf->use_short_slot) { |
| 688 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 689 | if (net_ratelimit()) { |
Christian Lamparter | 391429c | 2009-01-18 02:24:15 +0100 | [diff] [blame] | 690 | printk(KERN_DEBUG "%s: switched to %s slot time" |
| 691 | " (BSSID=%pM)\n", |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 692 | sdata->dev->name, |
| 693 | use_short_slot ? "short" : "long", |
| 694 | ifsta->bssid); |
| 695 | } |
| 696 | #endif |
| 697 | bss_conf->use_short_slot = use_short_slot; |
| 698 | changed |= BSS_CHANGED_ERP_SLOT; |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | return changed; |
| 702 | } |
| 703 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 704 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, |
| 705 | struct ieee80211_if_sta *ifsta) |
| 706 | { |
| 707 | union iwreq_data wrqu; |
| 708 | memset(&wrqu, 0, sizeof(wrqu)); |
| 709 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
| 710 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); |
| 711 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 712 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
| 713 | } |
| 714 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 715 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 716 | struct ieee80211_if_sta *ifsta) |
| 717 | { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 718 | char *buf; |
| 719 | size_t len; |
| 720 | int i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 721 | union iwreq_data wrqu; |
| 722 | |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 723 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) |
| 724 | return; |
| 725 | |
| 726 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + |
| 727 | ifsta->assocresp_ies_len), GFP_KERNEL); |
| 728 | if (!buf) |
| 729 | return; |
| 730 | |
| 731 | len = sprintf(buf, "ASSOCINFO("); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 732 | if (ifsta->assocreq_ies) { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 733 | len += sprintf(buf + len, "ReqIEs="); |
| 734 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { |
| 735 | len += sprintf(buf + len, "%02x", |
| 736 | ifsta->assocreq_ies[i]); |
| 737 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 738 | } |
| 739 | if (ifsta->assocresp_ies) { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 740 | if (ifsta->assocreq_ies) |
| 741 | len += sprintf(buf + len, " "); |
| 742 | len += sprintf(buf + len, "RespIEs="); |
| 743 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { |
| 744 | len += sprintf(buf + len, "%02x", |
| 745 | ifsta->assocresp_ies[i]); |
| 746 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 747 | } |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 748 | len += sprintf(buf + len, ")"); |
| 749 | |
| 750 | if (len > IW_CUSTOM_MAX) { |
| 751 | len = sprintf(buf, "ASSOCRESPIE="); |
| 752 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { |
| 753 | len += sprintf(buf + len, "%02x", |
| 754 | ifsta->assocresp_ies[i]); |
| 755 | } |
| 756 | } |
| 757 | |
John W. Linville | ad788b5 | 2008-10-01 15:45:02 -0400 | [diff] [blame] | 758 | if (len <= IW_CUSTOM_MAX) { |
| 759 | memset(&wrqu, 0, sizeof(wrqu)); |
| 760 | wrqu.data.length = len; |
| 761 | wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf); |
| 762 | } |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 763 | |
| 764 | kfree(buf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 765 | } |
| 766 | |
| 767 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 768 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 769 | struct ieee80211_if_sta *ifsta, |
| 770 | u32 bss_info_changed) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 771 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 772 | struct ieee80211_local *local = sdata->local; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 773 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 774 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 775 | struct ieee80211_bss *bss; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 776 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 777 | bss_info_changed |= BSS_CHANGED_ASSOC; |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 778 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 779 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 780 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 781 | return; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 782 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 783 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
| 784 | conf->channel->center_freq, |
| 785 | ifsta->ssid, ifsta->ssid_len); |
| 786 | if (bss) { |
| 787 | /* set timing information */ |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 788 | sdata->vif.bss_conf.beacon_int = bss->beacon_int; |
| 789 | sdata->vif.bss_conf.timestamp = bss->timestamp; |
| 790 | sdata->vif.bss_conf.dtim_period = bss->dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 791 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 792 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 793 | bss->capability, bss->has_erp_value, bss->erp_value); |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 794 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 795 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 796 | } |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 797 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 798 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
| 799 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
| 800 | ieee80211_sta_send_associnfo(sdata, ifsta); |
| 801 | |
| 802 | ifsta->last_probe = jiffies; |
| 803 | ieee80211_led_assoc(local, 1); |
| 804 | |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 805 | sdata->vif.bss_conf.assoc = 1; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 806 | /* |
| 807 | * For now just always ask the driver to update the basic rateset |
| 808 | * when we have associated, we aren't checking whether it actually |
| 809 | * changed or not. |
| 810 | */ |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 811 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
| 812 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 813 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 814 | if (local->powersave) { |
| 815 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) && |
| 816 | local->hw.conf.dynamic_ps_timeout > 0) { |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 817 | mod_timer(&local->dynamic_ps_timer, jiffies + |
Johannes Berg | 46f2c4b | 2009-01-06 18:13:18 +0100 | [diff] [blame] | 818 | msecs_to_jiffies( |
| 819 | local->hw.conf.dynamic_ps_timeout)); |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 820 | } else { |
| 821 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
| 822 | ieee80211_send_nullfunc(local, sdata, 1); |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 823 | conf->flags |= IEEE80211_CONF_PS; |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 824 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 825 | } |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 826 | } |
| 827 | |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 828 | netif_tx_start_all_queues(sdata->dev); |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 829 | netif_carrier_on(sdata->dev); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 830 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 831 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 832 | } |
| 833 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 834 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
| 835 | struct ieee80211_if_sta *ifsta) |
| 836 | { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 837 | ifsta->direct_probe_tries++; |
| 838 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 839 | printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", |
| 840 | sdata->dev->name, ifsta->bssid); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 841 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 842 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 843 | return; |
| 844 | } |
| 845 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 846 | printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", |
| 847 | sdata->dev->name, ifsta->bssid, |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 848 | ifsta->direct_probe_tries); |
| 849 | |
| 850 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 851 | |
| 852 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
| 853 | |
| 854 | /* Direct probe is sent to broadcast address as some APs |
| 855 | * will not answer to direct packet in unassociated state. |
| 856 | */ |
| 857 | ieee80211_send_probe_req(sdata, NULL, |
| 858 | ifsta->ssid, ifsta->ssid_len); |
| 859 | |
| 860 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 861 | } |
| 862 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 863 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 864 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 865 | struct ieee80211_if_sta *ifsta) |
| 866 | { |
| 867 | ifsta->auth_tries++; |
| 868 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 869 | printk(KERN_DEBUG "%s: authentication with AP %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 870 | " timed out\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 871 | sdata->dev->name, ifsta->bssid); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 872 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 873 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 874 | return; |
| 875 | } |
| 876 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 877 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 878 | printk(KERN_DEBUG "%s: authenticate with AP %pM\n", |
| 879 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 880 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 881 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 882 | |
| 883 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 884 | } |
| 885 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 886 | /* |
| 887 | * The disassoc 'reason' argument can be either our own reason |
| 888 | * if self disconnected or a reason code from the AP. |
| 889 | */ |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 890 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
| 891 | struct ieee80211_if_sta *ifsta, bool deauth, |
| 892 | bool self_disconnected, u16 reason) |
| 893 | { |
| 894 | struct ieee80211_local *local = sdata->local; |
| 895 | struct sta_info *sta; |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 896 | u32 changed = 0, config_changed = 0; |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 897 | |
| 898 | rcu_read_lock(); |
| 899 | |
| 900 | sta = sta_info_get(local, ifsta->bssid); |
| 901 | if (!sta) { |
| 902 | rcu_read_unlock(); |
| 903 | return; |
| 904 | } |
| 905 | |
| 906 | if (deauth) { |
| 907 | ifsta->direct_probe_tries = 0; |
| 908 | ifsta->auth_tries = 0; |
| 909 | } |
| 910 | ifsta->assoc_scan_tries = 0; |
| 911 | ifsta->assoc_tries = 0; |
| 912 | |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 913 | netif_tx_stop_all_queues(sdata->dev); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 914 | netif_carrier_off(sdata->dev); |
| 915 | |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 916 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->sta.addr); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 917 | |
| 918 | if (self_disconnected) { |
| 919 | if (deauth) |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 920 | ieee80211_send_deauth_disassoc(sdata, |
| 921 | IEEE80211_STYPE_DEAUTH, reason); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 922 | else |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 923 | ieee80211_send_deauth_disassoc(sdata, |
| 924 | IEEE80211_STYPE_DISASSOC, reason); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 925 | } |
| 926 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 927 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
| 928 | changed |= ieee80211_reset_erp_info(sdata); |
| 929 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 930 | ieee80211_led_assoc(local, 0); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 931 | changed |= BSS_CHANGED_ASSOC; |
| 932 | sdata->vif.bss_conf.assoc = false; |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 933 | |
| 934 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 935 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 936 | if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 937 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
| 938 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 939 | rcu_read_unlock(); |
| 940 | |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 941 | /* channel(_type) changes are handled by ieee80211_hw_config */ |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 942 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 943 | |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 944 | local->power_constr_level = 0; |
| 945 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 946 | del_timer_sync(&local->dynamic_ps_timer); |
| 947 | cancel_work_sync(&local->dynamic_ps_enable_work); |
| 948 | |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 949 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
| 950 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 951 | config_changed |= IEEE80211_CONF_CHANGE_PS; |
| 952 | } |
| 953 | |
| 954 | ieee80211_hw_config(local, config_changed); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 955 | ieee80211_bss_info_change_notify(sdata, changed); |
Tomas Winkler | 8e268e4 | 2008-11-25 13:05:44 +0200 | [diff] [blame] | 956 | |
| 957 | rcu_read_lock(); |
| 958 | |
| 959 | sta = sta_info_get(local, ifsta->bssid); |
| 960 | if (!sta) { |
| 961 | rcu_read_unlock(); |
| 962 | return; |
| 963 | } |
| 964 | |
| 965 | sta_info_unlink(&sta); |
| 966 | |
| 967 | rcu_read_unlock(); |
| 968 | |
| 969 | sta_info_destroy(sta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 970 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 971 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 972 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
| 973 | { |
| 974 | if (!sdata || !sdata->default_key || |
| 975 | sdata->default_key->conf.alg != ALG_WEP) |
| 976 | return 0; |
| 977 | return 1; |
| 978 | } |
| 979 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 980 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 981 | struct ieee80211_if_sta *ifsta) |
| 982 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 983 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 984 | struct ieee80211_bss *bss; |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 985 | int bss_privacy; |
| 986 | int wep_privacy; |
| 987 | int privacy_invoked; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 988 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 989 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 990 | return 0; |
| 991 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 992 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 993 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 994 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 995 | if (!bss) |
| 996 | return 0; |
| 997 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 998 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 999 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 1000 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1001 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1002 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1003 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 1004 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
| 1005 | return 0; |
| 1006 | |
| 1007 | return 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1008 | } |
| 1009 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1010 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1011 | struct ieee80211_if_sta *ifsta) |
| 1012 | { |
| 1013 | ifsta->assoc_tries++; |
| 1014 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1015 | printk(KERN_DEBUG "%s: association with AP %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1016 | " timed out\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1017 | sdata->dev->name, ifsta->bssid); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1018 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 1019 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1020 | return; |
| 1021 | } |
| 1022 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1023 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1024 | printk(KERN_DEBUG "%s: associate with AP %pM\n", |
| 1025 | sdata->dev->name, ifsta->bssid); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1026 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1027 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1028 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1029 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1030 | return; |
| 1031 | } |
| 1032 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1033 | ieee80211_send_assoc(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1034 | |
| 1035 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
| 1036 | } |
| 1037 | |
| 1038 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1039 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1040 | struct ieee80211_if_sta *ifsta) |
| 1041 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1042 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1043 | struct sta_info *sta; |
| 1044 | int disassoc; |
| 1045 | |
| 1046 | /* TODO: start monitoring current AP signal quality and number of |
| 1047 | * missed beacons. Scan other channels every now and then and search |
| 1048 | * for better APs. */ |
| 1049 | /* TODO: remove expired BSSes */ |
| 1050 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1051 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1052 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1053 | rcu_read_lock(); |
| 1054 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1055 | sta = sta_info_get(local, ifsta->bssid); |
| 1056 | if (!sta) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1057 | printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", |
| 1058 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1059 | disassoc = 1; |
| 1060 | } else { |
| 1061 | disassoc = 0; |
| 1062 | if (time_after(jiffies, |
| 1063 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1064 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1065 | printk(KERN_DEBUG "%s: No ProbeResp from " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1066 | "current AP %pM - assume out of " |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1067 | "range\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1068 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1069 | disassoc = 1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1070 | } else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1071 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Johannes Berg | 4dfe51e | 2008-09-19 05:10:34 +0200 | [diff] [blame] | 1072 | ifsta->ssid, |
| 1073 | ifsta->ssid_len); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1074 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1075 | } else { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1076 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1077 | if (time_after(jiffies, ifsta->last_probe + |
| 1078 | IEEE80211_PROBE_INTERVAL)) { |
| 1079 | ifsta->last_probe = jiffies; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1080 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1081 | ifsta->ssid, |
| 1082 | ifsta->ssid_len); |
| 1083 | } |
| 1084 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1085 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1086 | |
| 1087 | rcu_read_unlock(); |
| 1088 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1089 | if (disassoc) |
| 1090 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 1091 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
| 1092 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1093 | mod_timer(&ifsta->timer, jiffies + |
| 1094 | IEEE80211_MONITORING_INTERVAL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1095 | } |
| 1096 | |
| 1097 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1098 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1099 | struct ieee80211_if_sta *ifsta) |
| 1100 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1101 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1102 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1103 | ieee80211_associate(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1104 | } |
| 1105 | |
| 1106 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1107 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1108 | struct ieee80211_if_sta *ifsta, |
| 1109 | struct ieee80211_mgmt *mgmt, |
| 1110 | size_t len) |
| 1111 | { |
| 1112 | u8 *pos; |
| 1113 | struct ieee802_11_elems elems; |
| 1114 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1115 | pos = mgmt->u.auth.variable; |
John W. Linville | 67a4cce | 2007-10-12 16:40:37 -0400 | [diff] [blame] | 1116 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1117 | if (!elems.challenge) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1118 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1119 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1120 | elems.challenge_len + 2, 1); |
| 1121 | } |
| 1122 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1123 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1124 | struct ieee80211_if_sta *ifsta, |
| 1125 | struct ieee80211_mgmt *mgmt, |
| 1126 | size_t len) |
| 1127 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1128 | u16 auth_alg, auth_transaction, status_code; |
| 1129 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1130 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1131 | sdata->vif.type != NL80211_IFTYPE_ADHOC) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1132 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1133 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1134 | if (len < 24 + 6) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1135 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1136 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1137 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1138 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1139 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1140 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1141 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1142 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1143 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1144 | |
| 1145 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); |
| 1146 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); |
| 1147 | status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 1148 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1149 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 135a211 | 2008-06-16 20:55:29 +0200 | [diff] [blame] | 1150 | /* |
| 1151 | * IEEE 802.11 standard does not require authentication in IBSS |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1152 | * networks and most implementations do not seem to use it. |
| 1153 | * However, try to reply to authentication attempts if someone |
| 1154 | * has actually implemented this. |
Johannes Berg | 135a211 | 2008-06-16 20:55:29 +0200 | [diff] [blame] | 1155 | */ |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1156 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1157 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1158 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1159 | } |
| 1160 | |
| 1161 | if (auth_alg != ifsta->auth_alg || |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1162 | auth_transaction != ifsta->auth_transaction) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1163 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1164 | |
| 1165 | if (status_code != WLAN_STATUS_SUCCESS) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1166 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
| 1167 | u8 algs[3]; |
| 1168 | const int num_algs = ARRAY_SIZE(algs); |
| 1169 | int i, pos; |
| 1170 | algs[0] = algs[1] = algs[2] = 0xff; |
| 1171 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 1172 | algs[0] = WLAN_AUTH_OPEN; |
| 1173 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 1174 | algs[1] = WLAN_AUTH_SHARED_KEY; |
| 1175 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 1176 | algs[2] = WLAN_AUTH_LEAP; |
| 1177 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) |
| 1178 | pos = 0; |
| 1179 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) |
| 1180 | pos = 1; |
| 1181 | else |
| 1182 | pos = 2; |
| 1183 | for (i = 0; i < num_algs; i++) { |
| 1184 | pos++; |
| 1185 | if (pos >= num_algs) |
| 1186 | pos = 0; |
| 1187 | if (algs[pos] == ifsta->auth_alg || |
| 1188 | algs[pos] == 0xff) |
| 1189 | continue; |
| 1190 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1191 | !ieee80211_sta_wep_configured(sdata)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1192 | continue; |
| 1193 | ifsta->auth_alg = algs[pos]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1194 | break; |
| 1195 | } |
| 1196 | } |
| 1197 | return; |
| 1198 | } |
| 1199 | |
| 1200 | switch (ifsta->auth_alg) { |
| 1201 | case WLAN_AUTH_OPEN: |
| 1202 | case WLAN_AUTH_LEAP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1203 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1204 | break; |
| 1205 | case WLAN_AUTH_SHARED_KEY: |
| 1206 | if (ifsta->auth_transaction == 4) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1207 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1208 | else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1209 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1210 | break; |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1215 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1216 | struct ieee80211_if_sta *ifsta, |
| 1217 | struct ieee80211_mgmt *mgmt, |
| 1218 | size_t len) |
| 1219 | { |
| 1220 | u16 reason_code; |
| 1221 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1222 | if (len < 24 + 2) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1223 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1224 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1225 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1226 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1227 | |
| 1228 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
| 1229 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 1230 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
Zhu Yi | 97c8b01 | 2008-10-28 15:58:31 +0800 | [diff] [blame] | 1231 | printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", |
| 1232 | sdata->dev->name, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1233 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1234 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
| 1235 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || |
| 1236 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1237 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1238 | mod_timer(&ifsta->timer, jiffies + |
| 1239 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1240 | } |
| 1241 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1242 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1243 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1244 | } |
| 1245 | |
| 1246 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1247 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1248 | struct ieee80211_if_sta *ifsta, |
| 1249 | struct ieee80211_mgmt *mgmt, |
| 1250 | size_t len) |
| 1251 | { |
| 1252 | u16 reason_code; |
| 1253 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1254 | if (len < 24 + 2) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1255 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1256 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1257 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1258 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1259 | |
| 1260 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
| 1261 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1262 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
Zhu Yi | 97c8b01 | 2008-10-28 15:58:31 +0800 | [diff] [blame] | 1263 | printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", |
| 1264 | sdata->dev->name, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1265 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1266 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
| 1267 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1268 | mod_timer(&ifsta->timer, jiffies + |
| 1269 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1270 | } |
| 1271 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 1272 | ieee80211_set_disassoc(sdata, ifsta, false, false, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1273 | } |
| 1274 | |
| 1275 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1276 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1277 | struct ieee80211_if_sta *ifsta, |
| 1278 | struct ieee80211_mgmt *mgmt, |
| 1279 | size_t len, |
| 1280 | int reassoc) |
| 1281 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1282 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1283 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1284 | struct sta_info *sta; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 1285 | u32 rates, basic_rates; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1286 | u16 capab_info, status_code, aid; |
| 1287 | struct ieee802_11_elems elems; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 1288 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1289 | u8 *pos; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1290 | u32 changed = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1291 | int i, j; |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1292 | bool have_higher_than_11mbit = false, newsta = false; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1293 | u16 ap_ht_cap_flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1294 | |
| 1295 | /* AssocResp and ReassocResp have identical structure, so process both |
| 1296 | * of them in this function. */ |
| 1297 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1298 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1299 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1300 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1301 | if (len < 24 + 6) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1302 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1303 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1304 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1305 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1306 | |
| 1307 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
| 1308 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
| 1309 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1310 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1311 | printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1312 | "status=%d aid=%d)\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1313 | sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, |
Johannes Berg | ddd6858 | 2007-10-22 14:51:37 +0200 | [diff] [blame] | 1314 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1315 | |
Jouni Malinen | 63a5ab8 | 2009-01-08 13:32:09 +0200 | [diff] [blame] | 1316 | pos = mgmt->u.assoc_resp.variable; |
| 1317 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
| 1318 | |
| 1319 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && |
Jouni Malinen | f797eb7 | 2009-01-19 18:48:46 +0200 | [diff] [blame] | 1320 | elems.timeout_int && elems.timeout_int_len == 5 && |
| 1321 | elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { |
Jouni Malinen | 63a5ab8 | 2009-01-08 13:32:09 +0200 | [diff] [blame] | 1322 | u32 tu, ms; |
Jouni Malinen | f797eb7 | 2009-01-19 18:48:46 +0200 | [diff] [blame] | 1323 | tu = get_unaligned_le32(elems.timeout_int + 1); |
Jouni Malinen | 63a5ab8 | 2009-01-08 13:32:09 +0200 | [diff] [blame] | 1324 | ms = tu * 1024 / 1000; |
| 1325 | printk(KERN_DEBUG "%s: AP rejected association temporarily; " |
| 1326 | "comeback duration %u TU (%u ms)\n", |
| 1327 | sdata->dev->name, tu, ms); |
| 1328 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
| 1329 | mod_timer(&ifsta->timer, |
| 1330 | jiffies + msecs_to_jiffies(ms)); |
| 1331 | return; |
| 1332 | } |
| 1333 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1334 | if (status_code != WLAN_STATUS_SUCCESS) { |
| 1335 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1336 | sdata->dev->name, status_code); |
Daniel Drake | 8a69aa9 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 1337 | /* if this was a reassociation, ensure we try a "full" |
| 1338 | * association next time. This works around some broken APs |
| 1339 | * which do not correctly reject reassociation requests. */ |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1340 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1341 | return; |
| 1342 | } |
| 1343 | |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1344 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
| 1345 | 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] | 1346 | "set\n", sdata->dev->name, aid); |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1347 | aid &= ~(BIT(15) | BIT(14)); |
| 1348 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1349 | if (!elems.supp_rates) { |
| 1350 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1351 | sdata->dev->name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1352 | return; |
| 1353 | } |
| 1354 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1355 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1356 | ifsta->aid = aid; |
| 1357 | ifsta->ap_capab = capab_info; |
| 1358 | |
| 1359 | kfree(ifsta->assocresp_ies); |
| 1360 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 1361 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1362 | if (ifsta->assocresp_ies) |
| 1363 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); |
| 1364 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1365 | rcu_read_lock(); |
| 1366 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1367 | /* Add STA entry for the AP */ |
| 1368 | sta = sta_info_get(local, ifsta->bssid); |
| 1369 | if (!sta) { |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1370 | struct ieee80211_bss *bss; |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1371 | |
| 1372 | newsta = true; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1373 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1374 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
| 1375 | if (!sta) { |
| 1376 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1377 | " the AP\n", sdata->dev->name); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1378 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1379 | return; |
| 1380 | } |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1381 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1382 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 1383 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1384 | if (bss) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1385 | sta->last_signal = bss->signal; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1386 | sta->last_qual = bss->qual; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1387 | sta->last_noise = bss->noise; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1388 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1389 | } |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1390 | |
Ron Rindjunsky | a61dae1 | 2008-08-10 00:54:34 +0300 | [diff] [blame] | 1391 | /* update new sta with its last rx activity */ |
| 1392 | sta->last_rx = jiffies; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1393 | } |
| 1394 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1395 | /* |
| 1396 | * FIXME: Do we really need to update the sta_info's information here? |
| 1397 | * We already know about the AP (we found it in our list) so it |
| 1398 | * should already be filled with the right info, no? |
| 1399 | * As is stands, all this is racy because typically we assume |
| 1400 | * the information that is filled in here (except flags) doesn't |
| 1401 | * change while a STA structure is alive. As such, it should move |
| 1402 | * to between the sta_info_alloc() and sta_info_insert() above. |
| 1403 | */ |
| 1404 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1405 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
| 1406 | WLAN_STA_AUTHORIZED); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1407 | |
| 1408 | rates = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1409 | basic_rates = 0; |
| 1410 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1411 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1412 | for (i = 0; i < elems.supp_rates_len; i++) { |
| 1413 | int rate = (elems.supp_rates[i] & 0x7f) * 5; |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1414 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1415 | |
| 1416 | if (rate > 110) |
| 1417 | have_higher_than_11mbit = true; |
| 1418 | |
| 1419 | for (j = 0; j < sband->n_bitrates; j++) { |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1420 | if (sband->bitrates[j].bitrate == rate) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1421 | rates |= BIT(j); |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1422 | if (is_basic) |
| 1423 | basic_rates |= BIT(j); |
| 1424 | break; |
| 1425 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1426 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1427 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1428 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1429 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
| 1430 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1431 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1432 | |
| 1433 | if (rate > 110) |
| 1434 | have_higher_than_11mbit = true; |
| 1435 | |
| 1436 | for (j = 0; j < sband->n_bitrates; j++) { |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1437 | if (sband->bitrates[j].bitrate == rate) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1438 | rates |= BIT(j); |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1439 | if (is_basic) |
| 1440 | basic_rates |= BIT(j); |
| 1441 | break; |
| 1442 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1443 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1444 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1445 | |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1446 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 1447 | sdata->vif.bss_conf.basic_rates = basic_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1448 | |
| 1449 | /* cf. IEEE 802.11 9.2.12 */ |
| 1450 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 1451 | have_higher_than_11mbit) |
| 1452 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 1453 | else |
| 1454 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1455 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1456 | if (elems.ht_cap_elem) |
| 1457 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 1458 | elems.ht_cap_elem, &sta->sta.ht_cap); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1459 | |
| 1460 | ap_ht_cap_flags = sta->sta.ht_cap.cap; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1461 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1462 | rate_control_rate_init(sta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1463 | |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 1464 | if (ifsta->flags & IEEE80211_STA_MFP_ENABLED) |
| 1465 | set_sta_flags(sta, WLAN_STA_MFP); |
| 1466 | |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1467 | if (elems.wmm_param) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1468 | set_sta_flags(sta, WLAN_STA_WME); |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1469 | |
| 1470 | if (newsta) { |
| 1471 | int err = sta_info_insert(sta); |
| 1472 | if (err) { |
| 1473 | printk(KERN_DEBUG "%s: failed to insert STA entry for" |
| 1474 | " the AP (error %d)\n", sdata->dev->name, err); |
| 1475 | rcu_read_unlock(); |
| 1476 | return; |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | rcu_read_unlock(); |
| 1481 | |
| 1482 | if (elems.wmm_param) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1483 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1484 | elems.wmm_param_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1485 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1486 | if (elems.ht_info_elem && elems.wmm_param && |
| 1487 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
| 1488 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
| 1489 | ap_ht_cap_flags); |
| 1490 | |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 1491 | /* set AID and assoc capability, |
| 1492 | * ieee80211_set_associated() will tell the driver */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1493 | bss_conf->aid = aid; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 1494 | bss_conf->assoc_capability = capab_info; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1495 | ieee80211_set_associated(sdata, ifsta, changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1496 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1497 | ieee80211_associated(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1498 | } |
| 1499 | |
| 1500 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1501 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1502 | struct ieee80211_if_sta *ifsta, |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1503 | struct ieee80211_bss *bss) |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1504 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1505 | struct ieee80211_local *local = sdata->local; |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1506 | int res = 0, rates, i, j; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1507 | struct sk_buff *skb; |
| 1508 | struct ieee80211_mgmt *mgmt; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1509 | u8 *pos; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1510 | struct ieee80211_supported_band *sband; |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 1511 | union iwreq_data wrqu; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1512 | |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1513 | if (local->ops->reset_tsf) { |
| 1514 | /* Reset own TSF to allow time synchronization work. */ |
| 1515 | local->ops->reset_tsf(local_to_hw(local)); |
| 1516 | } |
| 1517 | |
| 1518 | if ((ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) && |
| 1519 | memcmp(ifsta->bssid, bss->bssid, ETH_ALEN) == 0) |
| 1520 | return res; |
| 1521 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 1522 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 + |
| 1523 | sdata->u.sta.ie_proberesp_len); |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1524 | if (!skb) { |
| 1525 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
| 1526 | "response\n", sdata->dev->name); |
| 1527 | return -ENOMEM; |
| 1528 | } |
| 1529 | |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1530 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1531 | |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1532 | if (!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) { |
| 1533 | /* Remove possible STA entries from other IBSS networks. */ |
| 1534 | sta_info_flush_delayed(sdata); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1535 | } |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1536 | |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1537 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1538 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1539 | if (res) |
| 1540 | return res; |
| 1541 | |
| 1542 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; |
| 1543 | |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1544 | sdata->drop_unencrypted = bss->capability & |
| 1545 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; |
| 1546 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1547 | res = ieee80211_set_freq(sdata, bss->freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1548 | |
Assaf Krauss | be038b3 | 2008-06-05 19:55:21 +0300 | [diff] [blame] | 1549 | if (res) |
| 1550 | return res; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1551 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1552 | /* Build IBSS probe response */ |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1553 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1554 | skb_reserve(skb, local->hw.extra_tx_headroom); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1555 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1556 | mgmt = (struct ieee80211_mgmt *) |
| 1557 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); |
| 1558 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); |
| 1559 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1560 | IEEE80211_STYPE_PROBE_RESP); |
| 1561 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 1562 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 1563 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 1564 | mgmt->u.beacon.beacon_int = |
| 1565 | cpu_to_le16(local->hw.conf.beacon_int); |
| 1566 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
| 1567 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1568 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1569 | pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 1570 | *pos++ = WLAN_EID_SSID; |
| 1571 | *pos++ = ifsta->ssid_len; |
| 1572 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1573 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1574 | rates = bss->supp_rates_len; |
| 1575 | if (rates > 8) |
| 1576 | rates = 8; |
| 1577 | pos = skb_put(skb, 2 + rates); |
| 1578 | *pos++ = WLAN_EID_SUPP_RATES; |
| 1579 | *pos++ = rates; |
| 1580 | memcpy(pos, bss->supp_rates, rates); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1581 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1582 | if (bss->band == IEEE80211_BAND_2GHZ) { |
| 1583 | pos = skb_put(skb, 2 + 1); |
| 1584 | *pos++ = WLAN_EID_DS_PARAMS; |
| 1585 | *pos++ = 1; |
| 1586 | *pos++ = ieee80211_frequency_to_channel(bss->freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1587 | } |
| 1588 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1589 | pos = skb_put(skb, 2 + 2); |
| 1590 | *pos++ = WLAN_EID_IBSS_PARAMS; |
| 1591 | *pos++ = 2; |
| 1592 | /* FIX: set ATIM window based on scan results */ |
| 1593 | *pos++ = 0; |
| 1594 | *pos++ = 0; |
| 1595 | |
| 1596 | if (bss->supp_rates_len > 8) { |
| 1597 | rates = bss->supp_rates_len - 8; |
| 1598 | pos = skb_put(skb, 2 + rates); |
| 1599 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 1600 | *pos++ = rates; |
| 1601 | memcpy(pos, &bss->supp_rates[8], rates); |
| 1602 | } |
| 1603 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 1604 | add_extra_ies(skb, sdata->u.sta.ie_proberesp, |
| 1605 | sdata->u.sta.ie_proberesp_len); |
| 1606 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1607 | ifsta->probe_resp = skb; |
| 1608 | |
Johannes Berg | 078e1e6 | 2009-01-22 18:07:31 +0100 | [diff] [blame] | 1609 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON | |
| 1610 | IEEE80211_IFCC_BEACON_ENABLED); |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1611 | |
| 1612 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1613 | rates = 0; |
| 1614 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1615 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 1616 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; |
| 1617 | for (j = 0; j < sband->n_bitrates; j++) |
| 1618 | if (sband->bitrates[j].bitrate == bitrate) |
| 1619 | rates |= BIT(j); |
| 1620 | } |
| 1621 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
| 1622 | |
Johannes Berg | b079ada | 2008-09-09 09:32:59 +0200 | [diff] [blame] | 1623 | ieee80211_sta_def_wmm_params(sdata, bss); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1624 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 1625 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1626 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1627 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 1628 | |
Emmanuel Grumbach | 4492bea | 2008-09-22 17:10:10 +0300 | [diff] [blame] | 1629 | ieee80211_led_assoc(local, true); |
| 1630 | |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 1631 | memset(&wrqu, 0, sizeof(wrqu)); |
| 1632 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1633 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1634 | |
| 1635 | return res; |
| 1636 | } |
| 1637 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1638 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1639 | struct ieee80211_mgmt *mgmt, |
| 1640 | size_t len, |
| 1641 | struct ieee80211_rx_status *rx_status, |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1642 | struct ieee802_11_elems *elems, |
| 1643 | bool beacon) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1644 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1645 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1646 | int freq; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1647 | struct ieee80211_bss *bss; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1648 | struct sta_info *sta; |
Johannes Berg | fab7d4a | 2008-03-16 18:42:44 +0100 | [diff] [blame] | 1649 | struct ieee80211_channel *channel; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1650 | u64 beacon_timestamp, rx_timestamp; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 1651 | u32 supp_rates = 0; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1652 | enum ieee80211_band band = rx_status->band; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1653 | |
Johannes Berg | 5bda617 | 2008-09-08 11:05:10 +0200 | [diff] [blame] | 1654 | if (elems->ds_params && elems->ds_params_len == 1) |
| 1655 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); |
| 1656 | else |
| 1657 | freq = rx_status->freq; |
| 1658 | |
| 1659 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
| 1660 | |
| 1661 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) |
| 1662 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1663 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1664 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && elems->supp_rates && |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1665 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1666 | supp_rates = ieee80211_sta_get_rates(local, elems, band); |
| 1667 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 1668 | rcu_read_lock(); |
| 1669 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1670 | sta = sta_info_get(local, mgmt->sa); |
| 1671 | if (sta) { |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 1672 | u32 prev_rates; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1673 | |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1674 | prev_rates = sta->sta.supp_rates[band]; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1675 | /* make sure mandatory rates are always added */ |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1676 | sta->sta.supp_rates[band] = supp_rates | |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 1677 | ieee80211_mandatory_rates(local, band); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1678 | |
| 1679 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1680 | if (sta->sta.supp_rates[band] != prev_rates) |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1681 | printk(KERN_DEBUG "%s: updated supp_rates set " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1682 | "for %pM based on beacon info (0x%llx | " |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1683 | "0x%llx -> 0x%llx)\n", |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1684 | sdata->dev->name, |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1685 | sta->sta.addr, |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1686 | (unsigned long long) prev_rates, |
| 1687 | (unsigned long long) supp_rates, |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1688 | (unsigned long long) sta->sta.supp_rates[band]); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1689 | #endif |
| 1690 | } else { |
Rami Rosen | ab1f5c0 | 2008-12-11 14:00:25 +0200 | [diff] [blame] | 1691 | ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1692 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1693 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 1694 | rcu_read_unlock(); |
| 1695 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1696 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1697 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
| 1698 | freq, beacon); |
| 1699 | if (!bss) |
| 1700 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1701 | |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 1702 | if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && |
| 1703 | (memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0)) { |
| 1704 | struct ieee80211_channel_sw_ie *sw_elem = |
| 1705 | (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; |
| 1706 | ieee80211_process_chanswitch(sdata, sw_elem, bss); |
| 1707 | } |
| 1708 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1709 | /* was just updated in ieee80211_bss_info_update */ |
| 1710 | beacon_timestamp = bss->timestamp; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 1711 | |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 1712 | /* |
| 1713 | * In STA mode, the remaining parameters should not be overridden |
| 1714 | * by beacons because they're not necessarily accurate there. |
| 1715 | */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1716 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1717 | bss->last_probe_resp && beacon) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1718 | ieee80211_rx_bss_put(local, bss); |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 1719 | return; |
| 1720 | } |
| 1721 | |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1722 | /* check if we need to merge IBSS */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1723 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && beacon && |
Alina Friedrichsen | 65f0e6a | 2009-01-06 03:08:10 +0100 | [diff] [blame] | 1724 | (!(sdata->u.sta.flags & IEEE80211_STA_BSSID_SET)) && |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 1725 | bss->capability & WLAN_CAPABILITY_IBSS && |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1726 | bss->freq == local->oper_channel->center_freq && |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1727 | elems->ssid_len == sdata->u.sta.ssid_len && |
| 1728 | memcmp(elems->ssid, sdata->u.sta.ssid, |
| 1729 | sdata->u.sta.ssid_len) == 0) { |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1730 | if (rx_status->flag & RX_FLAG_TSFT) { |
| 1731 | /* in order for correct IBSS merging we need mactime |
| 1732 | * |
| 1733 | * since mactime is defined as the time the first data |
| 1734 | * symbol of the frame hits the PHY, and the timestamp |
| 1735 | * of the beacon is defined as "the time that the data |
| 1736 | * symbol containing the first bit of the timestamp is |
| 1737 | * transmitted to the PHY plus the transmitting STA’s |
| 1738 | * delays through its local PHY from the MAC-PHY |
| 1739 | * interface to its interface with the WM" |
| 1740 | * (802.11 11.1.2) - equals the time this bit arrives at |
| 1741 | * the receiver - we have to take into account the |
| 1742 | * offset between the two. |
| 1743 | * e.g: at 1 MBit that means mactime is 192 usec earlier |
| 1744 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. |
| 1745 | */ |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 1746 | int rate; |
| 1747 | if (rx_status->flag & RX_FLAG_HT) { |
| 1748 | rate = 65; /* TODO: HT rates */ |
| 1749 | } else { |
| 1750 | rate = local->hw.wiphy->bands[band]-> |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1751 | bitrates[rx_status->rate_idx].bitrate; |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 1752 | } |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1753 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); |
| 1754 | } else if (local && local->ops && local->ops->get_tsf) |
| 1755 | /* second best option: get current TSF */ |
| 1756 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); |
| 1757 | else |
| 1758 | /* can't merge without knowing the TSF */ |
| 1759 | rx_timestamp = -1LLU; |
| 1760 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1761 | printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" |
| 1762 | "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", |
| 1763 | mgmt->sa, mgmt->bssid, |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1764 | (unsigned long long)rx_timestamp, |
| 1765 | (unsigned long long)beacon_timestamp, |
| 1766 | (unsigned long long)(rx_timestamp - beacon_timestamp), |
| 1767 | jiffies); |
| 1768 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 1769 | if (beacon_timestamp > rx_timestamp) { |
John W. Linville | 576fdea | 2008-08-26 20:33:34 -0400 | [diff] [blame] | 1770 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1771 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1772 | "local TSF - IBSS merge with BSSID %pM\n", |
| 1773 | sdata->dev->name, mgmt->bssid); |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 1774 | #endif |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1775 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
Rami Rosen | ab1f5c0 | 2008-12-11 14:00:25 +0200 | [diff] [blame] | 1776 | ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1777 | } |
| 1778 | } |
| 1779 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1780 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1781 | } |
| 1782 | |
| 1783 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1784 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1785 | struct ieee80211_mgmt *mgmt, |
| 1786 | size_t len, |
| 1787 | struct ieee80211_rx_status *rx_status) |
| 1788 | { |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1789 | size_t baselen; |
| 1790 | struct ieee802_11_elems elems; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1791 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1792 | |
Tomas Winkler | 8e7cdbb | 2008-08-03 14:32:01 +0300 | [diff] [blame] | 1793 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
| 1794 | return; /* ignore ProbeResp to foreign address */ |
| 1795 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1796 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
| 1797 | if (baselen > len) |
| 1798 | return; |
| 1799 | |
| 1800 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, |
| 1801 | &elems); |
| 1802 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1803 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1804 | |
| 1805 | /* direct probe may be part of the association flow */ |
| 1806 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, |
| 1807 | &ifsta->request)) { |
| 1808 | printk(KERN_DEBUG "%s direct probe responded\n", |
| 1809 | sdata->dev->name); |
| 1810 | ieee80211_authenticate(sdata, ifsta); |
| 1811 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1812 | } |
| 1813 | |
| 1814 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1815 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1816 | struct ieee80211_mgmt *mgmt, |
| 1817 | size_t len, |
| 1818 | struct ieee80211_rx_status *rx_status) |
| 1819 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1820 | struct ieee80211_if_sta *ifsta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1821 | size_t baselen; |
| 1822 | struct ieee802_11_elems elems; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1823 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1824 | u32 changed = 0; |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 1825 | bool erp_valid, directed_tim, is_mc = false; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1826 | u8 erp_value = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1827 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1828 | /* Process beacon from the current BSS */ |
| 1829 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; |
| 1830 | if (baselen > len) |
| 1831 | return; |
| 1832 | |
| 1833 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
| 1834 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1835 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1836 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1837 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1838 | return; |
| 1839 | ifsta = &sdata->u.sta; |
| 1840 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1841 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1842 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
| 1843 | return; |
| 1844 | |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 1845 | if (rx_status->freq != local->hw.conf.channel->center_freq) |
| 1846 | return; |
| 1847 | |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1848 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
| 1849 | elems.wmm_param_len); |
| 1850 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1851 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK && |
| 1852 | local->hw.conf.flags & IEEE80211_CONF_PS) { |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 1853 | directed_tim = check_tim(&elems, ifsta->aid, &is_mc); |
| 1854 | |
| 1855 | if (directed_tim || is_mc) { |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1856 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 1857 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 1858 | ieee80211_send_nullfunc(local, sdata, 0); |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 1859 | } |
| 1860 | } |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1861 | |
| 1862 | if (elems.erp_info && elems.erp_info_len >= 1) { |
| 1863 | erp_valid = true; |
| 1864 | erp_value = elems.erp_info[0]; |
| 1865 | } else { |
| 1866 | erp_valid = false; |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 1867 | } |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1868 | changed |= ieee80211_handle_bss_capability(sdata, |
| 1869 | le16_to_cpu(mgmt->u.beacon.capab_info), |
| 1870 | erp_valid, erp_value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1871 | |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1872 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1873 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) { |
| 1874 | struct sta_info *sta; |
| 1875 | struct ieee80211_supported_band *sband; |
| 1876 | u16 ap_ht_cap_flags; |
| 1877 | |
| 1878 | rcu_read_lock(); |
| 1879 | |
| 1880 | sta = sta_info_get(local, ifsta->bssid); |
| 1881 | if (!sta) { |
| 1882 | rcu_read_unlock(); |
| 1883 | return; |
| 1884 | } |
| 1885 | |
| 1886 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1887 | |
| 1888 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
| 1889 | elems.ht_cap_elem, &sta->sta.ht_cap); |
| 1890 | |
| 1891 | ap_ht_cap_flags = sta->sta.ht_cap.cap; |
| 1892 | |
| 1893 | rcu_read_unlock(); |
| 1894 | |
| 1895 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
| 1896 | ap_ht_cap_flags); |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1897 | } |
| 1898 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1899 | if (elems.country_elem) { |
| 1900 | /* Note we are only reviewing this on beacons |
| 1901 | * for the BSSID we are associated to */ |
| 1902 | regulatory_hint_11d(local->hw.wiphy, |
| 1903 | elems.country_elem, elems.country_elem_len); |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 1904 | |
| 1905 | /* TODO: IBSS also needs this */ |
| 1906 | if (elems.pwr_constr_elem) |
| 1907 | ieee80211_handle_pwr_constr(sdata, |
| 1908 | le16_to_cpu(mgmt->u.probe_resp.capab_info), |
| 1909 | elems.pwr_constr_elem, |
| 1910 | elems.pwr_constr_elem_len); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1911 | } |
| 1912 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1913 | ieee80211_bss_info_change_notify(sdata, changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1914 | } |
| 1915 | |
| 1916 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1917 | static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1918 | struct ieee80211_if_sta *ifsta, |
| 1919 | struct ieee80211_mgmt *mgmt, |
Rami Rosen | 504a71e | 2009-01-06 10:50:51 +0200 | [diff] [blame] | 1920 | size_t len) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1921 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1922 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1923 | int tx_last_beacon; |
| 1924 | struct sk_buff *skb; |
| 1925 | struct ieee80211_mgmt *resp; |
| 1926 | u8 *pos, *end; |
| 1927 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1928 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC || |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1929 | ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1930 | len < 24 + 2 || !ifsta->probe_resp) |
| 1931 | return; |
| 1932 | |
| 1933 | if (local->ops->tx_last_beacon) |
| 1934 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); |
| 1935 | else |
| 1936 | tx_last_beacon = 1; |
| 1937 | |
| 1938 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1939 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" |
| 1940 | " (tx_last_beacon=%d)\n", |
| 1941 | sdata->dev->name, mgmt->sa, mgmt->da, |
| 1942 | mgmt->bssid, tx_last_beacon); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1943 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 1944 | |
| 1945 | if (!tx_last_beacon) |
| 1946 | return; |
| 1947 | |
| 1948 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && |
| 1949 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) |
| 1950 | return; |
| 1951 | |
| 1952 | end = ((u8 *) mgmt) + len; |
| 1953 | pos = mgmt->u.probe_req.variable; |
| 1954 | if (pos[0] != WLAN_EID_SSID || |
| 1955 | pos + 2 + pos[1] > end) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1956 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 1957 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1958 | "from %pM\n", |
| 1959 | sdata->dev->name, mgmt->sa); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1960 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1961 | return; |
| 1962 | } |
| 1963 | if (pos[1] != 0 && |
| 1964 | (pos[1] != ifsta->ssid_len || |
| 1965 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { |
| 1966 | /* Ignore ProbeReq for foreign SSID */ |
| 1967 | return; |
| 1968 | } |
| 1969 | |
| 1970 | /* Reply with ProbeResp */ |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 1971 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1972 | if (!skb) |
| 1973 | return; |
| 1974 | |
| 1975 | resp = (struct ieee80211_mgmt *) skb->data; |
| 1976 | memcpy(resp->da, mgmt->sa, ETH_ALEN); |
| 1977 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1978 | printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", |
| 1979 | sdata->dev->name, resp->da); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1980 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 1981 | ieee80211_tx_skb(sdata, skb, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1982 | } |
| 1983 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1984 | void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1985 | struct ieee80211_rx_status *rx_status) |
| 1986 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1987 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1988 | struct ieee80211_if_sta *ifsta; |
| 1989 | struct ieee80211_mgmt *mgmt; |
| 1990 | u16 fc; |
| 1991 | |
| 1992 | if (skb->len < 24) |
| 1993 | goto fail; |
| 1994 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1995 | ifsta = &sdata->u.sta; |
| 1996 | |
| 1997 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 1998 | fc = le16_to_cpu(mgmt->frame_control); |
| 1999 | |
| 2000 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2001 | case IEEE80211_STYPE_PROBE_REQ: |
| 2002 | case IEEE80211_STYPE_PROBE_RESP: |
| 2003 | case IEEE80211_STYPE_BEACON: |
| 2004 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
| 2005 | case IEEE80211_STYPE_AUTH: |
| 2006 | case IEEE80211_STYPE_ASSOC_RESP: |
| 2007 | case IEEE80211_STYPE_REASSOC_RESP: |
| 2008 | case IEEE80211_STYPE_DEAUTH: |
| 2009 | case IEEE80211_STYPE_DISASSOC: |
| 2010 | skb_queue_tail(&ifsta->skb_queue, skb); |
| 2011 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2012 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2013 | } |
| 2014 | |
| 2015 | fail: |
| 2016 | kfree_skb(skb); |
| 2017 | } |
| 2018 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2019 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2020 | struct sk_buff *skb) |
| 2021 | { |
| 2022 | struct ieee80211_rx_status *rx_status; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2023 | struct ieee80211_if_sta *ifsta; |
| 2024 | struct ieee80211_mgmt *mgmt; |
| 2025 | u16 fc; |
| 2026 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2027 | ifsta = &sdata->u.sta; |
| 2028 | |
| 2029 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
| 2030 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 2031 | fc = le16_to_cpu(mgmt->frame_control); |
| 2032 | |
| 2033 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2034 | case IEEE80211_STYPE_PROBE_REQ: |
Rami Rosen | 504a71e | 2009-01-06 10:50:51 +0200 | [diff] [blame] | 2035 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2036 | break; |
| 2037 | case IEEE80211_STYPE_PROBE_RESP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2038 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2039 | break; |
| 2040 | case IEEE80211_STYPE_BEACON: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2041 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2042 | break; |
| 2043 | case IEEE80211_STYPE_AUTH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2044 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2045 | break; |
| 2046 | case IEEE80211_STYPE_ASSOC_RESP: |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2047 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2048 | break; |
| 2049 | case IEEE80211_STYPE_REASSOC_RESP: |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 2050 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2051 | break; |
| 2052 | case IEEE80211_STYPE_DEAUTH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2053 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2054 | break; |
| 2055 | case IEEE80211_STYPE_DISASSOC: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2056 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2057 | break; |
| 2058 | } |
| 2059 | |
| 2060 | kfree_skb(skb); |
| 2061 | } |
| 2062 | |
| 2063 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2064 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2065 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2066 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2067 | int active = 0; |
| 2068 | struct sta_info *sta; |
| 2069 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 2070 | rcu_read_lock(); |
| 2071 | |
| 2072 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 2073 | if (sta->sdata == sdata && |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2074 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
| 2075 | jiffies)) { |
| 2076 | active++; |
| 2077 | break; |
| 2078 | } |
| 2079 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 2080 | |
| 2081 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2082 | |
| 2083 | return active; |
| 2084 | } |
| 2085 | |
| 2086 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2087 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2088 | struct ieee80211_if_sta *ifsta) |
| 2089 | { |
| 2090 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 2091 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2092 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
| 2093 | if (ieee80211_sta_active_ibss(sdata)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2094 | return; |
| 2095 | |
Alina Friedrichsen | 137f9f4 | 2009-01-06 02:49:07 +0100 | [diff] [blame] | 2096 | if ((sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) && |
| 2097 | (!(sdata->u.sta.flags & IEEE80211_STA_AUTO_CHANNEL_SEL))) |
| 2098 | return; |
| 2099 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2100 | 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] | 2101 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2102 | ieee80211_request_scan(sdata, ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2106 | static void ieee80211_sta_timer(unsigned long data) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2107 | { |
| 2108 | struct ieee80211_sub_if_data *sdata = |
| 2109 | (struct ieee80211_sub_if_data *) data; |
| 2110 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2111 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2112 | |
| 2113 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 2114 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2115 | } |
| 2116 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2117 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2118 | struct ieee80211_if_sta *ifsta) |
| 2119 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2120 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2121 | |
| 2122 | if (local->ops->reset_tsf) { |
| 2123 | /* Reset own TSF to allow time synchronization work. */ |
| 2124 | local->ops->reset_tsf(local_to_hw(local)); |
| 2125 | } |
| 2126 | |
| 2127 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ |
| 2128 | |
| 2129 | |
| 2130 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 2131 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
| 2132 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 2133 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; |
| 2134 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 2135 | ifsta->auth_alg = WLAN_AUTH_LEAP; |
| 2136 | else |
| 2137 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2138 | ifsta->auth_transaction = -1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2139 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 2140 | ifsta->assoc_scan_tries = 0; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2141 | ifsta->direct_probe_tries = 0; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 2142 | ifsta->auth_tries = 0; |
| 2143 | ifsta->assoc_tries = 0; |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 2144 | netif_tx_stop_all_queues(sdata->dev); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2145 | netif_carrier_off(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2146 | } |
| 2147 | |
| 2148 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2149 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, |
| 2150 | const char *ssid, int ssid_len) |
| 2151 | { |
| 2152 | int tmp, hidden_ssid; |
| 2153 | |
Michael Wu | 4822570 | 2007-10-19 17:14:36 -0400 | [diff] [blame] | 2154 | if (ssid_len == ifsta->ssid_len && |
| 2155 | !memcmp(ifsta->ssid, ssid, ssid_len)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2156 | return 1; |
| 2157 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2158 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2159 | return 0; |
| 2160 | |
| 2161 | hidden_ssid = 1; |
| 2162 | tmp = ssid_len; |
| 2163 | while (tmp--) { |
| 2164 | if (ssid[tmp] != '\0') { |
| 2165 | hidden_ssid = 0; |
| 2166 | break; |
| 2167 | } |
| 2168 | } |
| 2169 | |
Fabio Rossi | cb3da8c | 2008-11-26 22:44:23 +0100 | [diff] [blame] | 2170 | if (hidden_ssid && (ifsta->ssid_len == ssid_len || ssid_len == 0)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2171 | return 1; |
| 2172 | |
| 2173 | if (ssid_len == 1 && ssid[0] == ' ') |
| 2174 | return 1; |
| 2175 | |
| 2176 | return 0; |
| 2177 | } |
| 2178 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2179 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2180 | struct ieee80211_if_sta *ifsta) |
| 2181 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2182 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2183 | struct ieee80211_bss *bss; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2184 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2185 | u8 bssid[ETH_ALEN], *pos; |
| 2186 | int i; |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2187 | int ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2188 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2189 | if (sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) { |
| 2190 | memcpy(bssid, ifsta->bssid, ETH_ALEN); |
| 2191 | } else { |
| 2192 | /* Generate random, not broadcast, locally administered BSSID. Mix in |
| 2193 | * own MAC address to make sure that devices that do not have proper |
| 2194 | * random number generator get different BSSID. */ |
| 2195 | get_random_bytes(bssid, ETH_ALEN); |
| 2196 | for (i = 0; i < ETH_ALEN; i++) |
| 2197 | bssid[i] ^= sdata->dev->dev_addr[i]; |
| 2198 | bssid[0] &= ~0x01; |
| 2199 | bssid[0] |= 0x02; |
| 2200 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2201 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2202 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", |
| 2203 | sdata->dev->name, bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2204 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 2205 | bss = ieee80211_rx_bss_add(local, bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2206 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 2207 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2208 | if (!bss) |
| 2209 | return -ENOMEM; |
| 2210 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2211 | bss->band = local->hw.conf.channel->band; |
| 2212 | sband = local->hw.wiphy->bands[bss->band]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2213 | |
| 2214 | if (local->hw.conf.beacon_int == 0) |
Tomas Winkler | dc0ae30 | 2008-06-12 22:38:37 +0300 | [diff] [blame] | 2215 | local->hw.conf.beacon_int = 100; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2216 | bss->beacon_int = local->hw.conf.beacon_int; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2217 | bss->last_update = jiffies; |
| 2218 | bss->capability = WLAN_CAPABILITY_IBSS; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2219 | |
| 2220 | if (sdata->default_key) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2221 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2222 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2223 | sdata->drop_unencrypted = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2224 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2225 | bss->supp_rates_len = sband->n_bitrates; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2226 | pos = bss->supp_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2227 | for (i = 0; i < sband->n_bitrates; i++) { |
| 2228 | int rate = sband->bitrates[i].bitrate; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2229 | *pos++ = (u8) (rate / 5); |
| 2230 | } |
| 2231 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2232 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2233 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2234 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2235 | } |
| 2236 | |
| 2237 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2238 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2239 | struct ieee80211_if_sta *ifsta) |
| 2240 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2241 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2242 | struct ieee80211_bss *bss; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2243 | int found = 0; |
| 2244 | u8 bssid[ETH_ALEN]; |
| 2245 | int active_ibss; |
| 2246 | |
| 2247 | if (ifsta->ssid_len == 0) |
| 2248 | return -EINVAL; |
| 2249 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2250 | active_ibss = ieee80211_sta_active_ibss(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2251 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2252 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2253 | sdata->dev->name, active_ibss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2254 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2255 | spin_lock_bh(&local->bss_lock); |
| 2256 | list_for_each_entry(bss, &local->bss_list, list) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2257 | if (ifsta->ssid_len != bss->ssid_len || |
| 2258 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 |
| 2259 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) |
| 2260 | continue; |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2261 | if ((ifsta->flags & IEEE80211_STA_BSSID_SET) && |
| 2262 | memcmp(ifsta->bssid, bss->bssid, ETH_ALEN) != 0) |
| 2263 | continue; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2264 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2265 | printk(KERN_DEBUG " bssid=%pM found\n", bss->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2266 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2267 | memcpy(bssid, bss->bssid, ETH_ALEN); |
| 2268 | found = 1; |
| 2269 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) |
| 2270 | break; |
| 2271 | } |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2272 | spin_unlock_bh(&local->bss_lock); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2273 | |
| 2274 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Vladimir Koutny | 6e43829 | 2008-07-07 14:23:01 +0200 | [diff] [blame] | 2275 | if (found) |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2276 | printk(KERN_DEBUG " sta_find_ibss: selected %pM current " |
| 2277 | "%pM\n", bssid, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2278 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2279 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2280 | if (found && |
| 2281 | ((!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) || |
| 2282 | memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0)) { |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2283 | int ret; |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2284 | int search_freq; |
| 2285 | |
| 2286 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
| 2287 | search_freq = bss->freq; |
| 2288 | else |
| 2289 | search_freq = local->hw.conf.channel->center_freq; |
| 2290 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2291 | bss = ieee80211_rx_bss_get(local, bssid, search_freq, |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2292 | ifsta->ssid, ifsta->ssid_len); |
| 2293 | if (!bss) |
| 2294 | goto dont_join; |
| 2295 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2296 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2297 | " based on configured SSID\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2298 | sdata->dev->name, bssid); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2299 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2300 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2301 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2302 | } |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2303 | |
| 2304 | dont_join: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2305 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2306 | printk(KERN_DEBUG " did not try to join ibss\n"); |
| 2307 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2308 | |
| 2309 | /* Selected IBSS not found in current scan results - try to scan */ |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2310 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2311 | !ieee80211_sta_active_ibss(sdata)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2312 | mod_timer(&ifsta->timer, jiffies + |
| 2313 | IEEE80211_IBSS_MERGE_INTERVAL); |
| 2314 | } else if (time_after(jiffies, local->last_scan_completed + |
| 2315 | IEEE80211_SCAN_INTERVAL)) { |
| 2316 | 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] | 2317 | "join\n", sdata->dev->name); |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2318 | return ieee80211_request_scan(sdata, ifsta->ssid, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2319 | ifsta->ssid_len); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2320 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2321 | int interval = IEEE80211_SCAN_INTERVAL; |
| 2322 | |
| 2323 | if (time_after(jiffies, ifsta->ibss_join_req + |
| 2324 | IEEE80211_IBSS_JOIN_TIMEOUT)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2325 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2326 | (!(local->oper_channel->flags & |
| 2327 | IEEE80211_CHAN_NO_IBSS))) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2328 | return ieee80211_sta_create_ibss(sdata, ifsta); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2329 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2330 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2331 | " %d MHz\n", sdata->dev->name, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2332 | local->hw.conf.channel->center_freq); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2333 | } |
| 2334 | |
| 2335 | /* No IBSS found - decrease scan interval and continue |
| 2336 | * scanning. */ |
| 2337 | interval = IEEE80211_SCAN_INTERVAL_SLOW; |
| 2338 | } |
| 2339 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2340 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2341 | mod_timer(&ifsta->timer, jiffies + interval); |
| 2342 | return 0; |
| 2343 | } |
| 2344 | |
| 2345 | return 0; |
| 2346 | } |
| 2347 | |
| 2348 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2349 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
| 2350 | struct ieee80211_if_sta *ifsta) |
| 2351 | { |
| 2352 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2353 | struct ieee80211_bss *bss, *selected = NULL; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2354 | int top_rssi = 0, freq; |
| 2355 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2356 | spin_lock_bh(&local->bss_lock); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2357 | freq = local->oper_channel->center_freq; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2358 | list_for_each_entry(bss, &local->bss_list, list) { |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2359 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) |
| 2360 | continue; |
| 2361 | |
| 2362 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
| 2363 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 2364 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && |
| 2365 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ |
| 2366 | !!sdata->default_key)) |
| 2367 | continue; |
| 2368 | |
| 2369 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
| 2370 | bss->freq != freq) |
| 2371 | continue; |
| 2372 | |
| 2373 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
| 2374 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
| 2375 | continue; |
| 2376 | |
| 2377 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
| 2378 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
| 2379 | continue; |
| 2380 | |
| 2381 | if (!selected || top_rssi < bss->signal) { |
| 2382 | selected = bss; |
| 2383 | top_rssi = bss->signal; |
| 2384 | } |
| 2385 | } |
| 2386 | if (selected) |
| 2387 | atomic_inc(&selected->users); |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2388 | spin_unlock_bh(&local->bss_lock); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2389 | |
| 2390 | if (selected) { |
| 2391 | ieee80211_set_freq(sdata, selected->freq); |
| 2392 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
| 2393 | ieee80211_sta_set_ssid(sdata, selected->ssid, |
| 2394 | selected->ssid_len); |
| 2395 | ieee80211_sta_set_bssid(sdata, selected->bssid); |
Johannes Berg | b079ada | 2008-09-09 09:32:59 +0200 | [diff] [blame] | 2396 | ieee80211_sta_def_wmm_params(sdata, selected); |
Jouni Malinen | fdfacf0 | 2009-01-08 13:32:05 +0200 | [diff] [blame] | 2397 | if (sdata->u.sta.mfp == IEEE80211_MFP_REQUIRED) |
| 2398 | sdata->u.sta.flags |= IEEE80211_STA_MFP_ENABLED; |
| 2399 | else |
| 2400 | sdata->u.sta.flags &= ~IEEE80211_STA_MFP_ENABLED; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2401 | |
| 2402 | /* Send out direct probe if no probe resp was received or |
| 2403 | * the one we have is outdated |
| 2404 | */ |
| 2405 | if (!selected->last_probe_resp || |
| 2406 | time_after(jiffies, selected->last_probe_resp |
| 2407 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
| 2408 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 2409 | else |
| 2410 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 2411 | |
| 2412 | ieee80211_rx_bss_put(local, selected); |
| 2413 | ieee80211_sta_reset_auth(sdata, ifsta); |
| 2414 | return 0; |
| 2415 | } else { |
| 2416 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
| 2417 | ifsta->assoc_scan_tries++; |
| 2418 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2419 | ieee80211_start_scan(sdata, NULL, 0); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2420 | else |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2421 | ieee80211_start_scan(sdata, ifsta->ssid, |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2422 | ifsta->ssid_len); |
| 2423 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 2424 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
Sujith | e374055 | 2009-01-29 09:34:22 +0530 | [diff] [blame] | 2425 | } else { |
| 2426 | ifsta->assoc_scan_tries = 0; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2427 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Sujith | e374055 | 2009-01-29 09:34:22 +0530 | [diff] [blame] | 2428 | } |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2429 | } |
| 2430 | return -1; |
| 2431 | } |
| 2432 | |
| 2433 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2434 | static void ieee80211_sta_work(struct work_struct *work) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2435 | { |
| 2436 | struct ieee80211_sub_if_data *sdata = |
| 2437 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); |
| 2438 | struct ieee80211_local *local = sdata->local; |
| 2439 | struct ieee80211_if_sta *ifsta; |
| 2440 | struct sk_buff *skb; |
| 2441 | |
| 2442 | if (!netif_running(sdata->dev)) |
| 2443 | return; |
| 2444 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2445 | if (local->sw_scanning || local->hw_scanning) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2446 | return; |
| 2447 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2448 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION && |
| 2449 | sdata->vif.type != NL80211_IFTYPE_ADHOC)) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2450 | return; |
| 2451 | ifsta = &sdata->u.sta; |
| 2452 | |
| 2453 | while ((skb = skb_dequeue(&ifsta->skb_queue))) |
| 2454 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
| 2455 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2456 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
| 2457 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
| 2458 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && |
| 2459 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2460 | ieee80211_start_scan(sdata, ifsta->scan_ssid, |
| 2461 | ifsta->scan_ssid_len); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2462 | return; |
| 2463 | } |
| 2464 | |
| 2465 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { |
| 2466 | if (ieee80211_sta_config_auth(sdata, ifsta)) |
| 2467 | return; |
| 2468 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 2469 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) |
| 2470 | return; |
| 2471 | |
| 2472 | switch (ifsta->state) { |
| 2473 | case IEEE80211_STA_MLME_DISABLED: |
| 2474 | break; |
| 2475 | case IEEE80211_STA_MLME_DIRECT_PROBE: |
| 2476 | ieee80211_direct_probe(sdata, ifsta); |
| 2477 | break; |
| 2478 | case IEEE80211_STA_MLME_AUTHENTICATE: |
| 2479 | ieee80211_authenticate(sdata, ifsta); |
| 2480 | break; |
| 2481 | case IEEE80211_STA_MLME_ASSOCIATE: |
| 2482 | ieee80211_associate(sdata, ifsta); |
| 2483 | break; |
| 2484 | case IEEE80211_STA_MLME_ASSOCIATED: |
| 2485 | ieee80211_associated(sdata, ifsta); |
| 2486 | break; |
| 2487 | case IEEE80211_STA_MLME_IBSS_SEARCH: |
| 2488 | ieee80211_sta_find_ibss(sdata, ifsta); |
| 2489 | break; |
| 2490 | case IEEE80211_STA_MLME_IBSS_JOINED: |
| 2491 | ieee80211_sta_merge_ibss(sdata, ifsta); |
| 2492 | break; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2493 | default: |
| 2494 | WARN_ON(1); |
| 2495 | break; |
| 2496 | } |
| 2497 | |
| 2498 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
| 2499 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
| 2500 | "mixed-cell disabled - disassociate\n", sdata->dev->name); |
| 2501 | |
| 2502 | ieee80211_set_disassoc(sdata, ifsta, false, true, |
| 2503 | WLAN_REASON_UNSPECIFIED); |
| 2504 | } |
| 2505 | } |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2506 | |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2507 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
| 2508 | { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2509 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
Johannes Berg | 7c95069 | 2008-09-11 00:01:48 +0200 | [diff] [blame] | 2510 | queue_work(sdata->local->hw.workqueue, |
| 2511 | &sdata->u.sta.work); |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2512 | } |
| 2513 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2514 | /* interface setup */ |
| 2515 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) |
| 2516 | { |
| 2517 | struct ieee80211_if_sta *ifsta; |
| 2518 | |
| 2519 | ifsta = &sdata->u.sta; |
| 2520 | INIT_WORK(&ifsta->work, ieee80211_sta_work); |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 2521 | INIT_WORK(&ifsta->chswitch_work, ieee80211_chswitch_work); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2522 | setup_timer(&ifsta->timer, ieee80211_sta_timer, |
| 2523 | (unsigned long) sdata); |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 2524 | setup_timer(&ifsta->chswitch_timer, ieee80211_chswitch_timer, |
| 2525 | (unsigned long) sdata); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2526 | skb_queue_head_init(&ifsta->skb_queue); |
| 2527 | |
| 2528 | ifsta->capab = WLAN_CAPABILITY_ESS; |
| 2529 | ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN | |
| 2530 | IEEE80211_AUTH_ALG_SHARED_KEY; |
| 2531 | ifsta->flags |= IEEE80211_STA_CREATE_IBSS | |
| 2532 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 2533 | IEEE80211_STA_AUTO_CHANNEL_SEL; |
| 2534 | if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4) |
| 2535 | ifsta->flags |= IEEE80211_STA_WMM_ENABLED; |
| 2536 | } |
| 2537 | |
| 2538 | /* |
| 2539 | * Add a new IBSS station, will also be called by the RX code when, |
| 2540 | * in IBSS mode, receiving a frame from a yet-unknown station, hence |
| 2541 | * must be callable in atomic context. |
| 2542 | */ |
| 2543 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 2544 | u8 *bssid,u8 *addr, u32 supp_rates) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2545 | { |
| 2546 | struct ieee80211_local *local = sdata->local; |
| 2547 | struct sta_info *sta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2548 | int band = local->hw.conf.channel->band; |
| 2549 | |
| 2550 | /* TODO: Could consider removing the least recently used entry and |
| 2551 | * allow new one to be added. */ |
| 2552 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { |
| 2553 | if (net_ratelimit()) { |
| 2554 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2555 | "entry %pM\n", sdata->dev->name, addr); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2556 | } |
| 2557 | return NULL; |
| 2558 | } |
| 2559 | |
| 2560 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
| 2561 | return NULL; |
| 2562 | |
| 2563 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2564 | printk(KERN_DEBUG "%s: Adding new IBSS station %pM (dev=%s)\n", |
| 2565 | wiphy_name(local->hw.wiphy), addr, sdata->dev->name); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2566 | #endif |
| 2567 | |
| 2568 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
| 2569 | if (!sta) |
| 2570 | return NULL; |
| 2571 | |
| 2572 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
| 2573 | |
| 2574 | /* make sure mandatory rates are always added */ |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 2575 | sta->sta.supp_rates[band] = supp_rates | |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 2576 | ieee80211_mandatory_rates(local, band); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2577 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2578 | rate_control_rate_init(sta); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2579 | |
| 2580 | if (sta_info_insert(sta)) |
| 2581 | return NULL; |
| 2582 | |
| 2583 | return sta; |
| 2584 | } |
| 2585 | |
| 2586 | /* configuration hooks */ |
| 2587 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
| 2588 | struct ieee80211_if_sta *ifsta) |
| 2589 | { |
| 2590 | struct ieee80211_local *local = sdata->local; |
| 2591 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2592 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2593 | return; |
| 2594 | |
| 2595 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
| 2596 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
| 2597 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
| 2598 | IEEE80211_STA_AUTO_SSID_SEL))) { |
| 2599 | |
| 2600 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) |
| 2601 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 2602 | WLAN_REASON_DEAUTH_LEAVING); |
| 2603 | |
| 2604 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
| 2605 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2606 | } |
| 2607 | } |
| 2608 | |
| 2609 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
| 2610 | { |
| 2611 | struct ieee80211_if_sta *ifsta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2612 | |
| 2613 | if (len > IEEE80211_MAX_SSID_LEN) |
| 2614 | return -EINVAL; |
| 2615 | |
| 2616 | ifsta = &sdata->u.sta; |
| 2617 | |
| 2618 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
| 2619 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); |
| 2620 | memcpy(ifsta->ssid, ssid, len); |
| 2621 | ifsta->ssid_len = len; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2622 | } |
| 2623 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2624 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
| 2625 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2626 | if (len) |
| 2627 | ifsta->flags |= IEEE80211_STA_SSID_SET; |
| 2628 | else |
| 2629 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; |
| 2630 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2631 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2632 | ifsta->ibss_join_req = jiffies; |
| 2633 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
| 2634 | return ieee80211_sta_find_ibss(sdata, ifsta); |
| 2635 | } |
| 2636 | |
| 2637 | return 0; |
| 2638 | } |
| 2639 | |
| 2640 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
| 2641 | { |
| 2642 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2643 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); |
| 2644 | *len = ifsta->ssid_len; |
| 2645 | return 0; |
| 2646 | } |
| 2647 | |
| 2648 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
| 2649 | { |
| 2650 | struct ieee80211_if_sta *ifsta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2651 | |
| 2652 | ifsta = &sdata->u.sta; |
| 2653 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2654 | if (is_valid_ether_addr(bssid)) { |
| 2655 | memcpy(ifsta->bssid, bssid, ETH_ALEN); |
| 2656 | ifsta->flags |= IEEE80211_STA_BSSID_SET; |
| 2657 | } else { |
| 2658 | memset(ifsta->bssid, 0, ETH_ALEN); |
| 2659 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
| 2660 | } |
| 2661 | |
| 2662 | if (netif_running(sdata->dev)) { |
| 2663 | if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) { |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2664 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " |
| 2665 | "the low-level driver\n", sdata->dev->name); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2666 | } |
| 2667 | } |
| 2668 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2669 | return ieee80211_sta_set_ssid(sdata, ifsta->ssid, ifsta->ssid_len); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2670 | } |
| 2671 | |
| 2672 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
| 2673 | { |
| 2674 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2675 | |
| 2676 | kfree(ifsta->extra_ie); |
| 2677 | if (len == 0) { |
| 2678 | ifsta->extra_ie = NULL; |
| 2679 | ifsta->extra_ie_len = 0; |
| 2680 | return 0; |
| 2681 | } |
| 2682 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); |
| 2683 | if (!ifsta->extra_ie) { |
| 2684 | ifsta->extra_ie_len = 0; |
| 2685 | return -ENOMEM; |
| 2686 | } |
| 2687 | memcpy(ifsta->extra_ie, ie, len); |
| 2688 | ifsta->extra_ie_len = len; |
| 2689 | return 0; |
| 2690 | } |
| 2691 | |
| 2692 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
| 2693 | { |
| 2694 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2695 | |
| 2696 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
| 2697 | sdata->dev->name, reason); |
| 2698 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2699 | if (sdata->vif.type != NL80211_IFTYPE_STATION && |
| 2700 | sdata->vif.type != NL80211_IFTYPE_ADHOC) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2701 | return -EINVAL; |
| 2702 | |
| 2703 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
| 2704 | return 0; |
| 2705 | } |
| 2706 | |
| 2707 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
| 2708 | { |
| 2709 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2710 | |
| 2711 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
| 2712 | sdata->dev->name, reason); |
| 2713 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2714 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2715 | return -EINVAL; |
| 2716 | |
| 2717 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
| 2718 | return -1; |
| 2719 | |
| 2720 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
| 2721 | return 0; |
| 2722 | } |
| 2723 | |
| 2724 | /* scan finished notification */ |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2725 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) |
| 2726 | { |
| 2727 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
| 2728 | struct ieee80211_if_sta *ifsta; |
| 2729 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2730 | if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2731 | ifsta = &sdata->u.sta; |
Alina Friedrichsen | c0415b5 | 2009-01-29 09:59:43 +0100 | [diff] [blame] | 2732 | if ((!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) || |
| 2733 | !ieee80211_sta_active_ibss(sdata)) |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2734 | ieee80211_sta_find_ibss(sdata, ifsta); |
| 2735 | } |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2736 | |
| 2737 | /* Restart STA timers */ |
| 2738 | rcu_read_lock(); |
| 2739 | list_for_each_entry_rcu(sdata, &local->interfaces, list) |
| 2740 | ieee80211_restart_sta_timer(sdata); |
| 2741 | rcu_read_unlock(); |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2742 | } |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2743 | |
| 2744 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
| 2745 | { |
| 2746 | struct ieee80211_local *local = |
| 2747 | container_of(work, struct ieee80211_local, |
| 2748 | dynamic_ps_disable_work); |
| 2749 | |
| 2750 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
| 2751 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 2752 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 2753 | } |
| 2754 | |
| 2755 | ieee80211_wake_queues_by_reason(&local->hw, |
| 2756 | IEEE80211_QUEUE_STOP_REASON_PS); |
| 2757 | } |
| 2758 | |
| 2759 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) |
| 2760 | { |
| 2761 | struct ieee80211_local *local = |
| 2762 | container_of(work, struct ieee80211_local, |
| 2763 | dynamic_ps_enable_work); |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 2764 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2765 | |
| 2766 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
| 2767 | return; |
| 2768 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 2769 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
| 2770 | ieee80211_send_nullfunc(local, sdata, 1); |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2771 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 2772 | local->hw.conf.flags |= IEEE80211_CONF_PS; |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2773 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 2774 | } |
| 2775 | |
| 2776 | void ieee80211_dynamic_ps_timer(unsigned long data) |
| 2777 | { |
| 2778 | struct ieee80211_local *local = (void *) data; |
| 2779 | |
| 2780 | queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); |
| 2781 | } |