Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * BSS client mode implementation |
| 3 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> |
| 4 | * Copyright 2004, Instant802 Networks, Inc. |
| 5 | * Copyright 2005, Devicescape Software, Inc. |
| 6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| 7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
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, |
| 76 | u64 *rates) |
| 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 */ |
| 96 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
| 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; |
| 103 | u64 supp_rates; |
| 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 | |
| 134 | /* also used by scanning code */ |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 135 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
| 136 | u8 *ssid, size_t ssid_len) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 137 | { |
| 138 | struct ieee80211_local *local = sdata->local; |
| 139 | struct ieee80211_supported_band *sband; |
| 140 | struct sk_buff *skb; |
| 141 | struct ieee80211_mgmt *mgmt; |
| 142 | u8 *pos, *supp_rates, *esupp_rates = NULL; |
| 143 | int i; |
| 144 | |
| 145 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); |
| 146 | if (!skb) { |
| 147 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
| 148 | "request\n", sdata->dev->name); |
| 149 | return; |
| 150 | } |
| 151 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 152 | |
| 153 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 154 | memset(mgmt, 0, 24); |
| 155 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 156 | IEEE80211_STYPE_PROBE_REQ); |
| 157 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 158 | if (dst) { |
| 159 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 160 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
| 161 | } else { |
| 162 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 163 | memset(mgmt->bssid, 0xff, ETH_ALEN); |
| 164 | } |
| 165 | pos = skb_put(skb, 2 + ssid_len); |
| 166 | *pos++ = WLAN_EID_SSID; |
| 167 | *pos++ = ssid_len; |
| 168 | memcpy(pos, ssid, ssid_len); |
| 169 | |
| 170 | supp_rates = skb_put(skb, 2); |
| 171 | supp_rates[0] = WLAN_EID_SUPP_RATES; |
| 172 | supp_rates[1] = 0; |
| 173 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 174 | |
| 175 | for (i = 0; i < sband->n_bitrates; i++) { |
| 176 | struct ieee80211_rate *rate = &sband->bitrates[i]; |
| 177 | if (esupp_rates) { |
| 178 | pos = skb_put(skb, 1); |
| 179 | esupp_rates[1]++; |
| 180 | } else if (supp_rates[1] == 8) { |
| 181 | esupp_rates = skb_put(skb, 3); |
| 182 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; |
| 183 | esupp_rates[1] = 1; |
| 184 | pos = &esupp_rates[2]; |
| 185 | } else { |
| 186 | pos = skb_put(skb, 1); |
| 187 | supp_rates[1]++; |
| 188 | } |
| 189 | *pos = rate->bitrate / 5; |
| 190 | } |
| 191 | |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 192 | ieee80211_tx_skb(sdata, skb, 0); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 193 | } |
| 194 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 195 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
| 196 | struct ieee80211_if_sta *ifsta, |
| 197 | int transaction, u8 *extra, size_t extra_len, |
| 198 | int encrypt) |
| 199 | { |
| 200 | struct ieee80211_local *local = sdata->local; |
| 201 | struct sk_buff *skb; |
| 202 | struct ieee80211_mgmt *mgmt; |
| 203 | |
| 204 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 205 | sizeof(*mgmt) + 6 + extra_len); |
| 206 | if (!skb) { |
| 207 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " |
| 208 | "frame\n", sdata->dev->name); |
| 209 | return; |
| 210 | } |
| 211 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 212 | |
| 213 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 214 | memset(mgmt, 0, 24 + 6); |
| 215 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 216 | IEEE80211_STYPE_AUTH); |
| 217 | if (encrypt) |
| 218 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 219 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 220 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 221 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 222 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); |
| 223 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
| 224 | ifsta->auth_transaction = transaction + 1; |
| 225 | mgmt->u.auth.status_code = cpu_to_le16(0); |
| 226 | if (extra) |
| 227 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
| 228 | |
| 229 | ieee80211_tx_skb(sdata, skb, encrypt); |
| 230 | } |
| 231 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 232 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
| 233 | struct ieee80211_if_sta *ifsta) |
| 234 | { |
| 235 | struct ieee80211_local *local = sdata->local; |
| 236 | struct sk_buff *skb; |
| 237 | struct ieee80211_mgmt *mgmt; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 238 | u8 *pos, *ies, *ht_ie; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 239 | int i, len, count, rates_len, supp_rates_len; |
| 240 | u16 capab; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 241 | struct ieee80211_bss *bss; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 242 | int wmm = 0; |
| 243 | struct ieee80211_supported_band *sband; |
| 244 | u64 rates = 0; |
| 245 | |
| 246 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 247 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + |
| 248 | ifsta->ssid_len); |
| 249 | if (!skb) { |
| 250 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " |
| 251 | "frame\n", sdata->dev->name); |
| 252 | return; |
| 253 | } |
| 254 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 255 | |
| 256 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 257 | |
| 258 | capab = ifsta->capab; |
| 259 | |
| 260 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { |
| 261 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) |
| 262 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
| 263 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) |
| 264 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; |
| 265 | } |
| 266 | |
| 267 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
| 268 | local->hw.conf.channel->center_freq, |
| 269 | ifsta->ssid, ifsta->ssid_len); |
| 270 | if (bss) { |
| 271 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) |
| 272 | capab |= WLAN_CAPABILITY_PRIVACY; |
| 273 | if (bss->wmm_used) |
| 274 | wmm = 1; |
| 275 | |
| 276 | /* get all rates supported by the device and the AP as |
| 277 | * some APs don't like getting a superset of their rates |
| 278 | * in the association request (e.g. D-Link DAP 1353 in |
| 279 | * b-only mode) */ |
| 280 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); |
| 281 | |
| 282 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
| 283 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
| 284 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
| 285 | |
| 286 | ieee80211_rx_bss_put(local, bss); |
| 287 | } else { |
| 288 | rates = ~0; |
| 289 | rates_len = sband->n_bitrates; |
| 290 | } |
| 291 | |
| 292 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 293 | memset(mgmt, 0, 24); |
| 294 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 295 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 296 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 297 | |
| 298 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
| 299 | skb_put(skb, 10); |
| 300 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 301 | IEEE80211_STYPE_REASSOC_REQ); |
| 302 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); |
| 303 | mgmt->u.reassoc_req.listen_interval = |
| 304 | cpu_to_le16(local->hw.conf.listen_interval); |
| 305 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, |
| 306 | ETH_ALEN); |
| 307 | } else { |
| 308 | skb_put(skb, 4); |
| 309 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 310 | IEEE80211_STYPE_ASSOC_REQ); |
| 311 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); |
Rami Rosen | 1355412 | 2008-12-16 22:38:29 +0200 | [diff] [blame] | 312 | mgmt->u.assoc_req.listen_interval = |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 313 | cpu_to_le16(local->hw.conf.listen_interval); |
| 314 | } |
| 315 | |
| 316 | /* SSID */ |
| 317 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 318 | *pos++ = WLAN_EID_SSID; |
| 319 | *pos++ = ifsta->ssid_len; |
| 320 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
| 321 | |
| 322 | /* add all rates which were marked to be used above */ |
| 323 | supp_rates_len = rates_len; |
| 324 | if (supp_rates_len > 8) |
| 325 | supp_rates_len = 8; |
| 326 | |
| 327 | len = sband->n_bitrates; |
| 328 | pos = skb_put(skb, supp_rates_len + 2); |
| 329 | *pos++ = WLAN_EID_SUPP_RATES; |
| 330 | *pos++ = supp_rates_len; |
| 331 | |
| 332 | count = 0; |
| 333 | for (i = 0; i < sband->n_bitrates; i++) { |
| 334 | if (BIT(i) & rates) { |
| 335 | int rate = sband->bitrates[i].bitrate; |
| 336 | *pos++ = (u8) (rate / 5); |
| 337 | if (++count == 8) |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | if (rates_len > count) { |
| 343 | pos = skb_put(skb, rates_len - count + 2); |
| 344 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 345 | *pos++ = rates_len - count; |
| 346 | |
| 347 | for (i++; i < sband->n_bitrates; i++) { |
| 348 | if (BIT(i) & rates) { |
| 349 | int rate = sband->bitrates[i].bitrate; |
| 350 | *pos++ = (u8) (rate / 5); |
| 351 | } |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
| 356 | /* 1. power capabilities */ |
| 357 | pos = skb_put(skb, 4); |
| 358 | *pos++ = WLAN_EID_PWR_CAPABILITY; |
| 359 | *pos++ = 2; |
| 360 | *pos++ = 0; /* min tx power */ |
| 361 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ |
| 362 | |
| 363 | /* 2. supported channels */ |
| 364 | /* TODO: get this in reg domain format */ |
| 365 | pos = skb_put(skb, 2 * sband->n_channels + 2); |
| 366 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; |
| 367 | *pos++ = 2 * sband->n_channels; |
| 368 | for (i = 0; i < sband->n_channels; i++) { |
| 369 | *pos++ = ieee80211_frequency_to_channel( |
| 370 | sband->channels[i].center_freq); |
| 371 | *pos++ = 1; /* one channel in the subband*/ |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | if (ifsta->extra_ie) { |
| 376 | pos = skb_put(skb, ifsta->extra_ie_len); |
| 377 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); |
| 378 | } |
| 379 | |
| 380 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
| 381 | pos = skb_put(skb, 9); |
| 382 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; |
| 383 | *pos++ = 7; /* len */ |
| 384 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ |
| 385 | *pos++ = 0x50; |
| 386 | *pos++ = 0xf2; |
| 387 | *pos++ = 2; /* WME */ |
| 388 | *pos++ = 0; /* WME info */ |
| 389 | *pos++ = 1; /* WME ver */ |
| 390 | *pos++ = 0; |
| 391 | } |
| 392 | |
| 393 | /* wmm support is a must to HT */ |
| 394 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 395 | sband->ht_cap.ht_supported && |
| 396 | (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && |
| 397 | ht_ie[1] >= sizeof(struct ieee80211_ht_info)) { |
| 398 | struct ieee80211_ht_info *ht_info = |
| 399 | (struct ieee80211_ht_info *)(ht_ie + 2); |
| 400 | u16 cap = sband->ht_cap.cap; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 401 | __le16 tmp; |
| 402 | u32 flags = local->hw.conf.channel->flags; |
| 403 | |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 404 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
| 405 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 406 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 407 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 408 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 409 | } |
| 410 | break; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 411 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 412 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 413 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 414 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 415 | } |
| 416 | break; |
| 417 | } |
| 418 | |
| 419 | tmp = cpu_to_le16(cap); |
| 420 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
| 421 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 422 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 423 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 424 | memcpy(pos, &tmp, sizeof(u16)); |
| 425 | pos += sizeof(u16); |
| 426 | /* TODO: needs a define here for << 2 */ |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 427 | *pos++ = sband->ht_cap.ampdu_factor | |
| 428 | (sband->ht_cap.ampdu_density << 2); |
| 429 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | kfree(ifsta->assocreq_ies); |
| 433 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; |
| 434 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
| 435 | if (ifsta->assocreq_ies) |
| 436 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); |
| 437 | |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 438 | ieee80211_tx_skb(sdata, skb, 0); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 442 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
| 443 | u16 stype, u16 reason) |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 444 | { |
| 445 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 446 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 447 | struct sk_buff *skb; |
| 448 | struct ieee80211_mgmt *mgmt; |
| 449 | |
| 450 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
| 451 | if (!skb) { |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 452 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
| 453 | "deauth/disassoc frame\n", sdata->dev->name); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 454 | return; |
| 455 | } |
| 456 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 457 | |
| 458 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 459 | memset(mgmt, 0, 24); |
| 460 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 461 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 462 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 463 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 464 | skb_put(skb, 2); |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 465 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 466 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
| 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 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 471 | /* MLME */ |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 472 | 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] | 473 | struct ieee80211_bss *bss) |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 474 | { |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 475 | struct ieee80211_local *local = sdata->local; |
| 476 | int i, have_higher_than_11mbit = 0; |
| 477 | |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 478 | /* cf. IEEE 802.11 9.2.12 */ |
| 479 | for (i = 0; i < bss->supp_rates_len; i++) |
| 480 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) |
| 481 | have_higher_than_11mbit = 1; |
| 482 | |
| 483 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 484 | have_higher_than_11mbit) |
| 485 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 486 | else |
| 487 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
| 488 | |
Johannes Berg | 3d35f7c | 2008-09-09 12:54:11 +0200 | [diff] [blame] | 489 | ieee80211_set_wmm_default(sdata); |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 490 | } |
| 491 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 492 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 493 | struct ieee80211_if_sta *ifsta, |
| 494 | u8 *wmm_param, size_t wmm_param_len) |
| 495 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 496 | struct ieee80211_tx_queue_params params; |
| 497 | size_t left; |
| 498 | int count; |
| 499 | u8 *pos; |
| 500 | |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 501 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
| 502 | return; |
| 503 | |
| 504 | if (!wmm_param) |
| 505 | return; |
| 506 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 507 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
| 508 | return; |
| 509 | count = wmm_param[6] & 0x0f; |
| 510 | if (count == ifsta->wmm_last_param_set) |
| 511 | return; |
| 512 | ifsta->wmm_last_param_set = count; |
| 513 | |
| 514 | pos = wmm_param + 8; |
| 515 | left = wmm_param_len - 8; |
| 516 | |
| 517 | memset(¶ms, 0, sizeof(params)); |
| 518 | |
| 519 | if (!local->ops->conf_tx) |
| 520 | return; |
| 521 | |
| 522 | local->wmm_acm = 0; |
| 523 | for (; left >= 4; left -= 4, pos += 4) { |
| 524 | int aci = (pos[0] >> 5) & 0x03; |
| 525 | int acm = (pos[0] >> 4) & 0x01; |
| 526 | int queue; |
| 527 | |
| 528 | switch (aci) { |
| 529 | case 1: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 530 | queue = 3; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 531 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 532 | local->wmm_acm |= BIT(0) | BIT(3); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 533 | break; |
| 534 | case 2: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 535 | queue = 1; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 536 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 537 | local->wmm_acm |= BIT(4) | BIT(5); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 538 | break; |
| 539 | case 3: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 540 | queue = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 541 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 542 | local->wmm_acm |= BIT(6) | BIT(7); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 543 | break; |
| 544 | case 0: |
| 545 | default: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 546 | queue = 2; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 547 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 548 | local->wmm_acm |= BIT(1) | BIT(2); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 549 | break; |
| 550 | } |
| 551 | |
| 552 | params.aifs = pos[0] & 0x0f; |
| 553 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); |
| 554 | params.cw_min = ecw2cw(pos[1] & 0x0f); |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 555 | params.txop = get_unaligned_le16(pos + 2); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 556 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 557 | 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] | 558 | "cWmin=%d cWmax=%d txop=%d\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 559 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 560 | params.cw_max, params.txop); |
| 561 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 562 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
| 563 | * AC for now) */ |
| 564 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { |
| 565 | printk(KERN_DEBUG "%s: failed to set TX queue " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 566 | "parameters for queue %d\n", local->mdev->name, queue); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 567 | } |
| 568 | } |
| 569 | } |
| 570 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 571 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
| 572 | u16 capab, bool erp_valid, u8 erp) |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 573 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 574 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 575 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 576 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 577 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 578 | u32 changed = 0; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 579 | bool use_protection; |
| 580 | bool use_short_preamble; |
| 581 | bool use_short_slot; |
| 582 | |
| 583 | if (erp_valid) { |
| 584 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; |
| 585 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; |
| 586 | } else { |
| 587 | use_protection = false; |
| 588 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); |
| 589 | } |
| 590 | |
| 591 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 592 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 593 | if (use_protection != bss_conf->use_cts_prot) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 594 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 595 | if (net_ratelimit()) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 596 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 597 | sdata->dev->name, |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 598 | use_protection ? "enabled" : "disabled", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 599 | ifsta->bssid); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 600 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 601 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 602 | bss_conf->use_cts_prot = use_protection; |
| 603 | changed |= BSS_CHANGED_ERP_CTS_PROT; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 604 | } |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 605 | |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 606 | if (use_short_preamble != bss_conf->use_short_preamble) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 607 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 608 | if (net_ratelimit()) { |
| 609 | printk(KERN_DEBUG "%s: switched to %s barker preamble" |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 610 | " (BSSID=%pM)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 611 | sdata->dev->name, |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 612 | use_short_preamble ? "short" : "long", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 613 | ifsta->bssid); |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 614 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 615 | #endif |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 616 | bss_conf->use_short_preamble = use_short_preamble; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 617 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 618 | } |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 619 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 620 | if (use_short_slot != bss_conf->use_short_slot) { |
| 621 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 622 | if (net_ratelimit()) { |
Christian Lamparter | 391429c | 2009-01-18 02:24:15 +0100 | [diff] [blame] | 623 | printk(KERN_DEBUG "%s: switched to %s slot time" |
| 624 | " (BSSID=%pM)\n", |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 625 | sdata->dev->name, |
| 626 | use_short_slot ? "short" : "long", |
| 627 | ifsta->bssid); |
| 628 | } |
| 629 | #endif |
| 630 | bss_conf->use_short_slot = use_short_slot; |
| 631 | changed |= BSS_CHANGED_ERP_SLOT; |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 632 | } |
| 633 | |
| 634 | return changed; |
| 635 | } |
| 636 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 637 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, |
| 638 | struct ieee80211_if_sta *ifsta) |
| 639 | { |
| 640 | union iwreq_data wrqu; |
| 641 | memset(&wrqu, 0, sizeof(wrqu)); |
| 642 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
| 643 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); |
| 644 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 645 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
| 646 | } |
| 647 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 648 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 649 | struct ieee80211_if_sta *ifsta) |
| 650 | { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 651 | char *buf; |
| 652 | size_t len; |
| 653 | int i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 654 | union iwreq_data wrqu; |
| 655 | |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 656 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) |
| 657 | return; |
| 658 | |
| 659 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + |
| 660 | ifsta->assocresp_ies_len), GFP_KERNEL); |
| 661 | if (!buf) |
| 662 | return; |
| 663 | |
| 664 | len = sprintf(buf, "ASSOCINFO("); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 665 | if (ifsta->assocreq_ies) { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 666 | len += sprintf(buf + len, "ReqIEs="); |
| 667 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { |
| 668 | len += sprintf(buf + len, "%02x", |
| 669 | ifsta->assocreq_ies[i]); |
| 670 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 671 | } |
| 672 | if (ifsta->assocresp_ies) { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 673 | if (ifsta->assocreq_ies) |
| 674 | len += sprintf(buf + len, " "); |
| 675 | len += sprintf(buf + len, "RespIEs="); |
| 676 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { |
| 677 | len += sprintf(buf + len, "%02x", |
| 678 | ifsta->assocresp_ies[i]); |
| 679 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 680 | } |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 681 | len += sprintf(buf + len, ")"); |
| 682 | |
| 683 | if (len > IW_CUSTOM_MAX) { |
| 684 | len = sprintf(buf, "ASSOCRESPIE="); |
| 685 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { |
| 686 | len += sprintf(buf + len, "%02x", |
| 687 | ifsta->assocresp_ies[i]); |
| 688 | } |
| 689 | } |
| 690 | |
John W. Linville | ad788b5 | 2008-10-01 15:45:02 -0400 | [diff] [blame] | 691 | if (len <= IW_CUSTOM_MAX) { |
| 692 | memset(&wrqu, 0, sizeof(wrqu)); |
| 693 | wrqu.data.length = len; |
| 694 | wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf); |
| 695 | } |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 696 | |
| 697 | kfree(buf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 701 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 702 | struct ieee80211_if_sta *ifsta, |
| 703 | u32 bss_info_changed) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 704 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 705 | struct ieee80211_local *local = sdata->local; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 706 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 707 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 708 | struct ieee80211_bss *bss; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 709 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 710 | bss_info_changed |= BSS_CHANGED_ASSOC; |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 711 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 712 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 713 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 714 | return; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 715 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 716 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
| 717 | conf->channel->center_freq, |
| 718 | ifsta->ssid, ifsta->ssid_len); |
| 719 | if (bss) { |
| 720 | /* set timing information */ |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 721 | sdata->vif.bss_conf.beacon_int = bss->beacon_int; |
| 722 | sdata->vif.bss_conf.timestamp = bss->timestamp; |
| 723 | sdata->vif.bss_conf.dtim_period = bss->dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 724 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 725 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 726 | bss->capability, bss->has_erp_value, bss->erp_value); |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 727 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 728 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 729 | } |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 730 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 731 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
| 732 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
| 733 | ieee80211_sta_send_associnfo(sdata, ifsta); |
| 734 | |
| 735 | ifsta->last_probe = jiffies; |
| 736 | ieee80211_led_assoc(local, 1); |
| 737 | |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 738 | sdata->vif.bss_conf.assoc = 1; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 739 | /* |
| 740 | * For now just always ask the driver to update the basic rateset |
| 741 | * when we have associated, we aren't checking whether it actually |
| 742 | * changed or not. |
| 743 | */ |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 744 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
| 745 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 746 | |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 747 | if (local->powersave) { |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 748 | if (local->dynamic_ps_timeout > 0) |
| 749 | mod_timer(&local->dynamic_ps_timer, jiffies + |
| 750 | msecs_to_jiffies(local->dynamic_ps_timeout)); |
| 751 | else { |
| 752 | conf->flags |= IEEE80211_CONF_PS; |
| 753 | ieee80211_hw_config(local, |
| 754 | IEEE80211_CONF_CHANGE_PS); |
| 755 | } |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 756 | } |
| 757 | |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 758 | netif_tx_start_all_queues(sdata->dev); |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 759 | netif_carrier_on(sdata->dev); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 760 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 761 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 762 | } |
| 763 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 764 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
| 765 | struct ieee80211_if_sta *ifsta) |
| 766 | { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 767 | ifsta->direct_probe_tries++; |
| 768 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 769 | printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", |
| 770 | sdata->dev->name, ifsta->bssid); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 771 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 772 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 773 | return; |
| 774 | } |
| 775 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 776 | printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", |
| 777 | sdata->dev->name, ifsta->bssid, |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 778 | ifsta->direct_probe_tries); |
| 779 | |
| 780 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 781 | |
| 782 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
| 783 | |
| 784 | /* Direct probe is sent to broadcast address as some APs |
| 785 | * will not answer to direct packet in unassociated state. |
| 786 | */ |
| 787 | ieee80211_send_probe_req(sdata, NULL, |
| 788 | ifsta->ssid, ifsta->ssid_len); |
| 789 | |
| 790 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 791 | } |
| 792 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 793 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 794 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 795 | struct ieee80211_if_sta *ifsta) |
| 796 | { |
| 797 | ifsta->auth_tries++; |
| 798 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 799 | printk(KERN_DEBUG "%s: authentication with AP %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 800 | " timed out\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 801 | sdata->dev->name, ifsta->bssid); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 802 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 803 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 804 | return; |
| 805 | } |
| 806 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 807 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 808 | printk(KERN_DEBUG "%s: authenticate with AP %pM\n", |
| 809 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 810 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 811 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 812 | |
| 813 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 814 | } |
| 815 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 816 | /* |
| 817 | * The disassoc 'reason' argument can be either our own reason |
| 818 | * if self disconnected or a reason code from the AP. |
| 819 | */ |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 820 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
| 821 | struct ieee80211_if_sta *ifsta, bool deauth, |
| 822 | bool self_disconnected, u16 reason) |
| 823 | { |
| 824 | struct ieee80211_local *local = sdata->local; |
| 825 | struct sta_info *sta; |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 826 | u32 changed = 0, config_changed = 0; |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 827 | |
| 828 | rcu_read_lock(); |
| 829 | |
| 830 | sta = sta_info_get(local, ifsta->bssid); |
| 831 | if (!sta) { |
| 832 | rcu_read_unlock(); |
| 833 | return; |
| 834 | } |
| 835 | |
| 836 | if (deauth) { |
| 837 | ifsta->direct_probe_tries = 0; |
| 838 | ifsta->auth_tries = 0; |
| 839 | } |
| 840 | ifsta->assoc_scan_tries = 0; |
| 841 | ifsta->assoc_tries = 0; |
| 842 | |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 843 | netif_tx_stop_all_queues(sdata->dev); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 844 | netif_carrier_off(sdata->dev); |
| 845 | |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 846 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->sta.addr); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 847 | |
| 848 | if (self_disconnected) { |
| 849 | if (deauth) |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 850 | ieee80211_send_deauth_disassoc(sdata, |
| 851 | IEEE80211_STYPE_DEAUTH, reason); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 852 | else |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 853 | ieee80211_send_deauth_disassoc(sdata, |
| 854 | IEEE80211_STYPE_DISASSOC, reason); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 855 | } |
| 856 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 857 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
| 858 | changed |= ieee80211_reset_erp_info(sdata); |
| 859 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 860 | ieee80211_led_assoc(local, 0); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 861 | changed |= BSS_CHANGED_ASSOC; |
| 862 | sdata->vif.bss_conf.assoc = false; |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 863 | |
| 864 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 865 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 866 | if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 867 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
| 868 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 869 | rcu_read_unlock(); |
| 870 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 871 | local->hw.conf.ht.enabled = false; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 872 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 873 | config_changed |= IEEE80211_CONF_CHANGE_HT; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 874 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 875 | del_timer_sync(&local->dynamic_ps_timer); |
| 876 | cancel_work_sync(&local->dynamic_ps_enable_work); |
| 877 | |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 878 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
| 879 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 880 | config_changed |= IEEE80211_CONF_CHANGE_PS; |
| 881 | } |
| 882 | |
| 883 | ieee80211_hw_config(local, config_changed); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 884 | ieee80211_bss_info_change_notify(sdata, changed); |
Tomas Winkler | 8e268e4 | 2008-11-25 13:05:44 +0200 | [diff] [blame] | 885 | |
| 886 | rcu_read_lock(); |
| 887 | |
| 888 | sta = sta_info_get(local, ifsta->bssid); |
| 889 | if (!sta) { |
| 890 | rcu_read_unlock(); |
| 891 | return; |
| 892 | } |
| 893 | |
| 894 | sta_info_unlink(&sta); |
| 895 | |
| 896 | rcu_read_unlock(); |
| 897 | |
| 898 | sta_info_destroy(sta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 899 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 900 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 901 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
| 902 | { |
| 903 | if (!sdata || !sdata->default_key || |
| 904 | sdata->default_key->conf.alg != ALG_WEP) |
| 905 | return 0; |
| 906 | return 1; |
| 907 | } |
| 908 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 909 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 910 | struct ieee80211_if_sta *ifsta) |
| 911 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 912 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 913 | struct ieee80211_bss *bss; |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 914 | int bss_privacy; |
| 915 | int wep_privacy; |
| 916 | int privacy_invoked; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 917 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 918 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 919 | return 0; |
| 920 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 921 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 922 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 923 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 924 | if (!bss) |
| 925 | return 0; |
| 926 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 927 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 928 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 929 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 930 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 931 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 932 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 933 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
| 934 | return 0; |
| 935 | |
| 936 | return 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 937 | } |
| 938 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 939 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 940 | struct ieee80211_if_sta *ifsta) |
| 941 | { |
| 942 | ifsta->assoc_tries++; |
| 943 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 944 | printk(KERN_DEBUG "%s: association with AP %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 945 | " timed out\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 946 | sdata->dev->name, ifsta->bssid); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 947 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 948 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 949 | return; |
| 950 | } |
| 951 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 952 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 953 | printk(KERN_DEBUG "%s: associate with AP %pM\n", |
| 954 | sdata->dev->name, ifsta->bssid); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 955 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 956 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 957 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 958 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 959 | return; |
| 960 | } |
| 961 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 962 | ieee80211_send_assoc(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 963 | |
| 964 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
| 965 | } |
| 966 | |
| 967 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 968 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 969 | struct ieee80211_if_sta *ifsta) |
| 970 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 971 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 972 | struct sta_info *sta; |
| 973 | int disassoc; |
| 974 | |
| 975 | /* TODO: start monitoring current AP signal quality and number of |
| 976 | * missed beacons. Scan other channels every now and then and search |
| 977 | * for better APs. */ |
| 978 | /* TODO: remove expired BSSes */ |
| 979 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 980 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 981 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 982 | rcu_read_lock(); |
| 983 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 984 | sta = sta_info_get(local, ifsta->bssid); |
| 985 | if (!sta) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 986 | printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", |
| 987 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 988 | disassoc = 1; |
| 989 | } else { |
| 990 | disassoc = 0; |
| 991 | if (time_after(jiffies, |
| 992 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 993 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 994 | printk(KERN_DEBUG "%s: No ProbeResp from " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 995 | "current AP %pM - assume out of " |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 996 | "range\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 997 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 998 | disassoc = 1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 999 | } else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1000 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Johannes Berg | 4dfe51e | 2008-09-19 05:10:34 +0200 | [diff] [blame] | 1001 | ifsta->ssid, |
| 1002 | ifsta->ssid_len); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1003 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1004 | } else { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1005 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1006 | if (time_after(jiffies, ifsta->last_probe + |
| 1007 | IEEE80211_PROBE_INTERVAL)) { |
| 1008 | ifsta->last_probe = jiffies; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1009 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1010 | ifsta->ssid, |
| 1011 | ifsta->ssid_len); |
| 1012 | } |
| 1013 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1014 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1015 | |
| 1016 | rcu_read_unlock(); |
| 1017 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1018 | if (disassoc) |
| 1019 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 1020 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
| 1021 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1022 | mod_timer(&ifsta->timer, jiffies + |
| 1023 | IEEE80211_MONITORING_INTERVAL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1024 | } |
| 1025 | |
| 1026 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1027 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1028 | struct ieee80211_if_sta *ifsta) |
| 1029 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1030 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1031 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1032 | ieee80211_associate(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1033 | } |
| 1034 | |
| 1035 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1036 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1037 | struct ieee80211_if_sta *ifsta, |
| 1038 | struct ieee80211_mgmt *mgmt, |
| 1039 | size_t len) |
| 1040 | { |
| 1041 | u8 *pos; |
| 1042 | struct ieee802_11_elems elems; |
| 1043 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1044 | pos = mgmt->u.auth.variable; |
John W. Linville | 67a4cce | 2007-10-12 16:40:37 -0400 | [diff] [blame] | 1045 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1046 | if (!elems.challenge) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1047 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1048 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1049 | elems.challenge_len + 2, 1); |
| 1050 | } |
| 1051 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1052 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1053 | struct ieee80211_if_sta *ifsta, |
| 1054 | struct ieee80211_mgmt *mgmt, |
| 1055 | size_t len) |
| 1056 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1057 | u16 auth_alg, auth_transaction, status_code; |
| 1058 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1059 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1060 | sdata->vif.type != NL80211_IFTYPE_ADHOC) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1061 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1062 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1063 | if (len < 24 + 6) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1064 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1065 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1066 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1067 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1068 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1069 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1070 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1071 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1072 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1073 | |
| 1074 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); |
| 1075 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); |
| 1076 | status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 1077 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1078 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 135a211 | 2008-06-16 20:55:29 +0200 | [diff] [blame] | 1079 | /* |
| 1080 | * IEEE 802.11 standard does not require authentication in IBSS |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1081 | * networks and most implementations do not seem to use it. |
| 1082 | * However, try to reply to authentication attempts if someone |
| 1083 | * has actually implemented this. |
Johannes Berg | 135a211 | 2008-06-16 20:55:29 +0200 | [diff] [blame] | 1084 | */ |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1085 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1086 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1087 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | if (auth_alg != ifsta->auth_alg || |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1091 | auth_transaction != ifsta->auth_transaction) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1092 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1093 | |
| 1094 | if (status_code != WLAN_STATUS_SUCCESS) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1095 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
| 1096 | u8 algs[3]; |
| 1097 | const int num_algs = ARRAY_SIZE(algs); |
| 1098 | int i, pos; |
| 1099 | algs[0] = algs[1] = algs[2] = 0xff; |
| 1100 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 1101 | algs[0] = WLAN_AUTH_OPEN; |
| 1102 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 1103 | algs[1] = WLAN_AUTH_SHARED_KEY; |
| 1104 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 1105 | algs[2] = WLAN_AUTH_LEAP; |
| 1106 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) |
| 1107 | pos = 0; |
| 1108 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) |
| 1109 | pos = 1; |
| 1110 | else |
| 1111 | pos = 2; |
| 1112 | for (i = 0; i < num_algs; i++) { |
| 1113 | pos++; |
| 1114 | if (pos >= num_algs) |
| 1115 | pos = 0; |
| 1116 | if (algs[pos] == ifsta->auth_alg || |
| 1117 | algs[pos] == 0xff) |
| 1118 | continue; |
| 1119 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1120 | !ieee80211_sta_wep_configured(sdata)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1121 | continue; |
| 1122 | ifsta->auth_alg = algs[pos]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1123 | break; |
| 1124 | } |
| 1125 | } |
| 1126 | return; |
| 1127 | } |
| 1128 | |
| 1129 | switch (ifsta->auth_alg) { |
| 1130 | case WLAN_AUTH_OPEN: |
| 1131 | case WLAN_AUTH_LEAP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1132 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1133 | break; |
| 1134 | case WLAN_AUTH_SHARED_KEY: |
| 1135 | if (ifsta->auth_transaction == 4) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1136 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1137 | else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1138 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1139 | break; |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1144 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1145 | struct ieee80211_if_sta *ifsta, |
| 1146 | struct ieee80211_mgmt *mgmt, |
| 1147 | size_t len) |
| 1148 | { |
| 1149 | u16 reason_code; |
| 1150 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1151 | if (len < 24 + 2) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1152 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1153 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1154 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1155 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1156 | |
| 1157 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
| 1158 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 1159 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
Zhu Yi | 97c8b01 | 2008-10-28 15:58:31 +0800 | [diff] [blame] | 1160 | printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", |
| 1161 | sdata->dev->name, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1162 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1163 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
| 1164 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || |
| 1165 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1166 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1167 | mod_timer(&ifsta->timer, jiffies + |
| 1168 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1169 | } |
| 1170 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1171 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1172 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1173 | } |
| 1174 | |
| 1175 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1176 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1177 | struct ieee80211_if_sta *ifsta, |
| 1178 | struct ieee80211_mgmt *mgmt, |
| 1179 | size_t len) |
| 1180 | { |
| 1181 | u16 reason_code; |
| 1182 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1183 | if (len < 24 + 2) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1184 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1185 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1186 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1187 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1188 | |
| 1189 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
| 1190 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1191 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
Zhu Yi | 97c8b01 | 2008-10-28 15:58:31 +0800 | [diff] [blame] | 1192 | printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", |
| 1193 | sdata->dev->name, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1194 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1195 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
| 1196 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1197 | mod_timer(&ifsta->timer, jiffies + |
| 1198 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1199 | } |
| 1200 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 1201 | ieee80211_set_disassoc(sdata, ifsta, false, false, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1205 | 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] | 1206 | struct ieee80211_if_sta *ifsta, |
| 1207 | struct ieee80211_mgmt *mgmt, |
| 1208 | size_t len, |
| 1209 | int reassoc) |
| 1210 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1211 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1212 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1213 | struct sta_info *sta; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1214 | u64 rates, basic_rates; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1215 | u16 capab_info, status_code, aid; |
| 1216 | struct ieee802_11_elems elems; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 1217 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1218 | u8 *pos; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1219 | u32 changed = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1220 | int i, j; |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1221 | bool have_higher_than_11mbit = false, newsta = false; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1222 | u16 ap_ht_cap_flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1223 | |
| 1224 | /* AssocResp and ReassocResp have identical structure, so process both |
| 1225 | * of them in this function. */ |
| 1226 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1227 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1228 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1229 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1230 | if (len < 24 + 6) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1231 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1232 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1233 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1234 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1235 | |
| 1236 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
| 1237 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
| 1238 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1239 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1240 | printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1241 | "status=%d aid=%d)\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1242 | sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, |
Johannes Berg | ddd6858 | 2007-10-22 14:51:37 +0200 | [diff] [blame] | 1243 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1244 | |
| 1245 | if (status_code != WLAN_STATUS_SUCCESS) { |
| 1246 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1247 | sdata->dev->name, status_code); |
Daniel Drake | 8a69aa9 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 1248 | /* if this was a reassociation, ensure we try a "full" |
| 1249 | * association next time. This works around some broken APs |
| 1250 | * which do not correctly reject reassociation requests. */ |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1251 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1252 | return; |
| 1253 | } |
| 1254 | |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1255 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
| 1256 | 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] | 1257 | "set\n", sdata->dev->name, aid); |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1258 | aid &= ~(BIT(15) | BIT(14)); |
| 1259 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1260 | pos = mgmt->u.assoc_resp.variable; |
John W. Linville | 67a4cce | 2007-10-12 16:40:37 -0400 | [diff] [blame] | 1261 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1262 | |
| 1263 | if (!elems.supp_rates) { |
| 1264 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1265 | sdata->dev->name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1266 | return; |
| 1267 | } |
| 1268 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1269 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1270 | ifsta->aid = aid; |
| 1271 | ifsta->ap_capab = capab_info; |
| 1272 | |
| 1273 | kfree(ifsta->assocresp_ies); |
| 1274 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 1275 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1276 | if (ifsta->assocresp_ies) |
| 1277 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); |
| 1278 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1279 | rcu_read_lock(); |
| 1280 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1281 | /* Add STA entry for the AP */ |
| 1282 | sta = sta_info_get(local, ifsta->bssid); |
| 1283 | if (!sta) { |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1284 | struct ieee80211_bss *bss; |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1285 | |
| 1286 | newsta = true; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1287 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1288 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
| 1289 | if (!sta) { |
| 1290 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1291 | " the AP\n", sdata->dev->name); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1292 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1293 | return; |
| 1294 | } |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1295 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1296 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 1297 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1298 | if (bss) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1299 | sta->last_signal = bss->signal; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1300 | sta->last_qual = bss->qual; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1301 | sta->last_noise = bss->noise; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1302 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1303 | } |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1304 | |
Ron Rindjunsky | a61dae1 | 2008-08-10 00:54:34 +0300 | [diff] [blame] | 1305 | /* update new sta with its last rx activity */ |
| 1306 | sta->last_rx = jiffies; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1307 | } |
| 1308 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1309 | /* |
| 1310 | * FIXME: Do we really need to update the sta_info's information here? |
| 1311 | * We already know about the AP (we found it in our list) so it |
| 1312 | * should already be filled with the right info, no? |
| 1313 | * As is stands, all this is racy because typically we assume |
| 1314 | * the information that is filled in here (except flags) doesn't |
| 1315 | * change while a STA structure is alive. As such, it should move |
| 1316 | * to between the sta_info_alloc() and sta_info_insert() above. |
| 1317 | */ |
| 1318 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1319 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
| 1320 | WLAN_STA_AUTHORIZED); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1321 | |
| 1322 | rates = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1323 | basic_rates = 0; |
| 1324 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1325 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1326 | for (i = 0; i < elems.supp_rates_len; i++) { |
| 1327 | int rate = (elems.supp_rates[i] & 0x7f) * 5; |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1328 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1329 | |
| 1330 | if (rate > 110) |
| 1331 | have_higher_than_11mbit = true; |
| 1332 | |
| 1333 | for (j = 0; j < sband->n_bitrates; j++) { |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1334 | if (sband->bitrates[j].bitrate == rate) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1335 | rates |= BIT(j); |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1336 | if (is_basic) |
| 1337 | basic_rates |= BIT(j); |
| 1338 | break; |
| 1339 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1340 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1341 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1342 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1343 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
| 1344 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1345 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1346 | |
| 1347 | if (rate > 110) |
| 1348 | have_higher_than_11mbit = true; |
| 1349 | |
| 1350 | for (j = 0; j < sband->n_bitrates; j++) { |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1351 | if (sband->bitrates[j].bitrate == rate) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1352 | rates |= BIT(j); |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1353 | if (is_basic) |
| 1354 | basic_rates |= BIT(j); |
| 1355 | break; |
| 1356 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1357 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1358 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1359 | |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1360 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 1361 | sdata->vif.bss_conf.basic_rates = basic_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1362 | |
| 1363 | /* cf. IEEE 802.11 9.2.12 */ |
| 1364 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 1365 | have_higher_than_11mbit) |
| 1366 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 1367 | else |
| 1368 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1369 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1370 | if (elems.ht_cap_elem) |
| 1371 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 1372 | elems.ht_cap_elem, &sta->sta.ht_cap); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1373 | |
| 1374 | ap_ht_cap_flags = sta->sta.ht_cap.cap; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1375 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1376 | rate_control_rate_init(sta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1377 | |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1378 | if (elems.wmm_param) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1379 | set_sta_flags(sta, WLAN_STA_WME); |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1380 | |
| 1381 | if (newsta) { |
| 1382 | int err = sta_info_insert(sta); |
| 1383 | if (err) { |
| 1384 | printk(KERN_DEBUG "%s: failed to insert STA entry for" |
| 1385 | " the AP (error %d)\n", sdata->dev->name, err); |
| 1386 | rcu_read_unlock(); |
| 1387 | return; |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | rcu_read_unlock(); |
| 1392 | |
| 1393 | if (elems.wmm_param) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1394 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1395 | elems.wmm_param_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1396 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1397 | if (elems.ht_info_elem && elems.wmm_param && |
| 1398 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
| 1399 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
| 1400 | ap_ht_cap_flags); |
| 1401 | |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 1402 | /* set AID and assoc capability, |
| 1403 | * ieee80211_set_associated() will tell the driver */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1404 | bss_conf->aid = aid; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 1405 | bss_conf->assoc_capability = capab_info; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1406 | ieee80211_set_associated(sdata, ifsta, changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1407 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1408 | ieee80211_associated(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1409 | } |
| 1410 | |
| 1411 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1412 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1413 | struct ieee80211_if_sta *ifsta, |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1414 | struct ieee80211_bss *bss) |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1415 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1416 | struct ieee80211_local *local = sdata->local; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1417 | int res, rates, i, j; |
| 1418 | struct sk_buff *skb; |
| 1419 | struct ieee80211_mgmt *mgmt; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1420 | u8 *pos; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1421 | struct ieee80211_supported_band *sband; |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 1422 | union iwreq_data wrqu; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1423 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1424 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
| 1425 | if (!skb) { |
| 1426 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
| 1427 | "response\n", sdata->dev->name); |
| 1428 | return -ENOMEM; |
| 1429 | } |
| 1430 | |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1431 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1432 | |
| 1433 | /* Remove possible STA entries from other IBSS networks. */ |
Johannes Berg | dc6676b | 2008-03-31 19:23:03 +0200 | [diff] [blame] | 1434 | sta_info_flush_delayed(sdata); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1435 | |
| 1436 | if (local->ops->reset_tsf) { |
| 1437 | /* Reset own TSF to allow time synchronization work. */ |
| 1438 | local->ops->reset_tsf(local_to_hw(local)); |
| 1439 | } |
| 1440 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1441 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1442 | if (res) |
| 1443 | return res; |
| 1444 | |
| 1445 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; |
| 1446 | |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1447 | sdata->drop_unencrypted = bss->capability & |
| 1448 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; |
| 1449 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1450 | res = ieee80211_set_freq(sdata, bss->freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1451 | |
Assaf Krauss | be038b3 | 2008-06-05 19:55:21 +0300 | [diff] [blame] | 1452 | if (res) |
| 1453 | return res; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1454 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1455 | /* Build IBSS probe response */ |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1456 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1457 | skb_reserve(skb, local->hw.extra_tx_headroom); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1458 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1459 | mgmt = (struct ieee80211_mgmt *) |
| 1460 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); |
| 1461 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); |
| 1462 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 1463 | IEEE80211_STYPE_PROBE_RESP); |
| 1464 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 1465 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 1466 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 1467 | mgmt->u.beacon.beacon_int = |
| 1468 | cpu_to_le16(local->hw.conf.beacon_int); |
| 1469 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
| 1470 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1471 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1472 | pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 1473 | *pos++ = WLAN_EID_SSID; |
| 1474 | *pos++ = ifsta->ssid_len; |
| 1475 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1476 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1477 | rates = bss->supp_rates_len; |
| 1478 | if (rates > 8) |
| 1479 | rates = 8; |
| 1480 | pos = skb_put(skb, 2 + rates); |
| 1481 | *pos++ = WLAN_EID_SUPP_RATES; |
| 1482 | *pos++ = rates; |
| 1483 | memcpy(pos, bss->supp_rates, rates); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1484 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1485 | if (bss->band == IEEE80211_BAND_2GHZ) { |
| 1486 | pos = skb_put(skb, 2 + 1); |
| 1487 | *pos++ = WLAN_EID_DS_PARAMS; |
| 1488 | *pos++ = 1; |
| 1489 | *pos++ = ieee80211_frequency_to_channel(bss->freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1490 | } |
| 1491 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1492 | pos = skb_put(skb, 2 + 2); |
| 1493 | *pos++ = WLAN_EID_IBSS_PARAMS; |
| 1494 | *pos++ = 2; |
| 1495 | /* FIX: set ATIM window based on scan results */ |
| 1496 | *pos++ = 0; |
| 1497 | *pos++ = 0; |
| 1498 | |
| 1499 | if (bss->supp_rates_len > 8) { |
| 1500 | rates = bss->supp_rates_len - 8; |
| 1501 | pos = skb_put(skb, 2 + rates); |
| 1502 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 1503 | *pos++ = rates; |
| 1504 | memcpy(pos, &bss->supp_rates[8], rates); |
| 1505 | } |
| 1506 | |
| 1507 | ifsta->probe_resp = skb; |
| 1508 | |
| 1509 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
| 1510 | |
| 1511 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1512 | rates = 0; |
| 1513 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1514 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 1515 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; |
| 1516 | for (j = 0; j < sband->n_bitrates; j++) |
| 1517 | if (sband->bitrates[j].bitrate == bitrate) |
| 1518 | rates |= BIT(j); |
| 1519 | } |
| 1520 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
| 1521 | |
Johannes Berg | b079ada | 2008-09-09 09:32:59 +0200 | [diff] [blame] | 1522 | ieee80211_sta_def_wmm_params(sdata, bss); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1523 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1524 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1525 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 1526 | |
Emmanuel Grumbach | 4492bea | 2008-09-22 17:10:10 +0300 | [diff] [blame] | 1527 | ieee80211_led_assoc(local, true); |
| 1528 | |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 1529 | memset(&wrqu, 0, sizeof(wrqu)); |
| 1530 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1531 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1532 | |
| 1533 | return res; |
| 1534 | } |
| 1535 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1536 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1537 | struct ieee80211_mgmt *mgmt, |
| 1538 | size_t len, |
| 1539 | struct ieee80211_rx_status *rx_status, |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1540 | struct ieee802_11_elems *elems, |
| 1541 | bool beacon) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1542 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1543 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1544 | int freq; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1545 | struct ieee80211_bss *bss; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1546 | struct sta_info *sta; |
Johannes Berg | fab7d4a | 2008-03-16 18:42:44 +0100 | [diff] [blame] | 1547 | struct ieee80211_channel *channel; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1548 | u64 beacon_timestamp, rx_timestamp; |
| 1549 | u64 supp_rates = 0; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1550 | enum ieee80211_band band = rx_status->band; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1551 | |
Johannes Berg | 5bda617 | 2008-09-08 11:05:10 +0200 | [diff] [blame] | 1552 | if (elems->ds_params && elems->ds_params_len == 1) |
| 1553 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); |
| 1554 | else |
| 1555 | freq = rx_status->freq; |
| 1556 | |
| 1557 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
| 1558 | |
| 1559 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) |
| 1560 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1561 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1562 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && elems->supp_rates && |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1563 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1564 | supp_rates = ieee80211_sta_get_rates(local, elems, band); |
| 1565 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 1566 | rcu_read_lock(); |
| 1567 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1568 | sta = sta_info_get(local, mgmt->sa); |
| 1569 | if (sta) { |
| 1570 | u64 prev_rates; |
| 1571 | |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1572 | prev_rates = sta->sta.supp_rates[band]; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1573 | /* make sure mandatory rates are always added */ |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1574 | sta->sta.supp_rates[band] = supp_rates | |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 1575 | ieee80211_mandatory_rates(local, band); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1576 | |
| 1577 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1578 | if (sta->sta.supp_rates[band] != prev_rates) |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1579 | printk(KERN_DEBUG "%s: updated supp_rates set " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1580 | "for %pM based on beacon info (0x%llx | " |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1581 | "0x%llx -> 0x%llx)\n", |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1582 | sdata->dev->name, |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1583 | sta->sta.addr, |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1584 | (unsigned long long) prev_rates, |
| 1585 | (unsigned long long) supp_rates, |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1586 | (unsigned long long) sta->sta.supp_rates[band]); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1587 | #endif |
| 1588 | } else { |
Rami Rosen | ab1f5c0 | 2008-12-11 14:00:25 +0200 | [diff] [blame] | 1589 | ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1590 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1591 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 1592 | rcu_read_unlock(); |
| 1593 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1594 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1595 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
| 1596 | freq, beacon); |
| 1597 | if (!bss) |
| 1598 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1599 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1600 | /* was just updated in ieee80211_bss_info_update */ |
| 1601 | beacon_timestamp = bss->timestamp; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 1602 | |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 1603 | /* |
| 1604 | * In STA mode, the remaining parameters should not be overridden |
| 1605 | * by beacons because they're not necessarily accurate there. |
| 1606 | */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1607 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1608 | bss->last_probe_resp && beacon) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1609 | ieee80211_rx_bss_put(local, bss); |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 1610 | return; |
| 1611 | } |
| 1612 | |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1613 | /* check if we need to merge IBSS */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1614 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && beacon && |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 1615 | bss->capability & WLAN_CAPABILITY_IBSS && |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1616 | bss->freq == local->oper_channel->center_freq && |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1617 | elems->ssid_len == sdata->u.sta.ssid_len && |
| 1618 | memcmp(elems->ssid, sdata->u.sta.ssid, |
| 1619 | sdata->u.sta.ssid_len) == 0) { |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1620 | if (rx_status->flag & RX_FLAG_TSFT) { |
| 1621 | /* in order for correct IBSS merging we need mactime |
| 1622 | * |
| 1623 | * since mactime is defined as the time the first data |
| 1624 | * symbol of the frame hits the PHY, and the timestamp |
| 1625 | * of the beacon is defined as "the time that the data |
| 1626 | * symbol containing the first bit of the timestamp is |
| 1627 | * transmitted to the PHY plus the transmitting STA’s |
| 1628 | * delays through its local PHY from the MAC-PHY |
| 1629 | * interface to its interface with the WM" |
| 1630 | * (802.11 11.1.2) - equals the time this bit arrives at |
| 1631 | * the receiver - we have to take into account the |
| 1632 | * offset between the two. |
| 1633 | * e.g: at 1 MBit that means mactime is 192 usec earlier |
| 1634 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. |
| 1635 | */ |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 1636 | int rate; |
| 1637 | if (rx_status->flag & RX_FLAG_HT) { |
| 1638 | rate = 65; /* TODO: HT rates */ |
| 1639 | } else { |
| 1640 | rate = local->hw.wiphy->bands[band]-> |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1641 | bitrates[rx_status->rate_idx].bitrate; |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 1642 | } |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1643 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); |
| 1644 | } else if (local && local->ops && local->ops->get_tsf) |
| 1645 | /* second best option: get current TSF */ |
| 1646 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); |
| 1647 | else |
| 1648 | /* can't merge without knowing the TSF */ |
| 1649 | rx_timestamp = -1LLU; |
| 1650 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1651 | printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" |
| 1652 | "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", |
| 1653 | mgmt->sa, mgmt->bssid, |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1654 | (unsigned long long)rx_timestamp, |
| 1655 | (unsigned long long)beacon_timestamp, |
| 1656 | (unsigned long long)(rx_timestamp - beacon_timestamp), |
| 1657 | jiffies); |
| 1658 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 1659 | if (beacon_timestamp > rx_timestamp) { |
John W. Linville | 576fdea | 2008-08-26 20:33:34 -0400 | [diff] [blame] | 1660 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1661 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1662 | "local TSF - IBSS merge with BSSID %pM\n", |
| 1663 | sdata->dev->name, mgmt->bssid); |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 1664 | #endif |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1665 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
Rami Rosen | ab1f5c0 | 2008-12-11 14:00:25 +0200 | [diff] [blame] | 1666 | ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1667 | } |
| 1668 | } |
| 1669 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1670 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1671 | } |
| 1672 | |
| 1673 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1674 | 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] | 1675 | struct ieee80211_mgmt *mgmt, |
| 1676 | size_t len, |
| 1677 | struct ieee80211_rx_status *rx_status) |
| 1678 | { |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1679 | size_t baselen; |
| 1680 | struct ieee802_11_elems elems; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1681 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1682 | |
Tomas Winkler | 8e7cdbb | 2008-08-03 14:32:01 +0300 | [diff] [blame] | 1683 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
| 1684 | return; /* ignore ProbeResp to foreign address */ |
| 1685 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1686 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
| 1687 | if (baselen > len) |
| 1688 | return; |
| 1689 | |
| 1690 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, |
| 1691 | &elems); |
| 1692 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1693 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1694 | |
| 1695 | /* direct probe may be part of the association flow */ |
| 1696 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, |
| 1697 | &ifsta->request)) { |
| 1698 | printk(KERN_DEBUG "%s direct probe responded\n", |
| 1699 | sdata->dev->name); |
| 1700 | ieee80211_authenticate(sdata, ifsta); |
| 1701 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1702 | } |
| 1703 | |
| 1704 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1705 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1706 | struct ieee80211_mgmt *mgmt, |
| 1707 | size_t len, |
| 1708 | struct ieee80211_rx_status *rx_status) |
| 1709 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1710 | struct ieee80211_if_sta *ifsta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1711 | size_t baselen; |
| 1712 | struct ieee802_11_elems elems; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1713 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1714 | u32 changed = 0; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1715 | bool erp_valid; |
| 1716 | u8 erp_value = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1717 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1718 | /* Process beacon from the current BSS */ |
| 1719 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; |
| 1720 | if (baselen > len) |
| 1721 | return; |
| 1722 | |
| 1723 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
| 1724 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1725 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1726 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1727 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1728 | return; |
| 1729 | ifsta = &sdata->u.sta; |
| 1730 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1731 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1732 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
| 1733 | return; |
| 1734 | |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1735 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
| 1736 | elems.wmm_param_len); |
| 1737 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1738 | |
| 1739 | if (elems.erp_info && elems.erp_info_len >= 1) { |
| 1740 | erp_valid = true; |
| 1741 | erp_value = elems.erp_info[0]; |
| 1742 | } else { |
| 1743 | erp_valid = false; |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 1744 | } |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1745 | changed |= ieee80211_handle_bss_capability(sdata, |
| 1746 | le16_to_cpu(mgmt->u.beacon.capab_info), |
| 1747 | erp_valid, erp_value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1748 | |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1749 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1750 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) { |
| 1751 | struct sta_info *sta; |
| 1752 | struct ieee80211_supported_band *sband; |
| 1753 | u16 ap_ht_cap_flags; |
| 1754 | |
| 1755 | rcu_read_lock(); |
| 1756 | |
| 1757 | sta = sta_info_get(local, ifsta->bssid); |
| 1758 | if (!sta) { |
| 1759 | rcu_read_unlock(); |
| 1760 | return; |
| 1761 | } |
| 1762 | |
| 1763 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1764 | |
| 1765 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
| 1766 | elems.ht_cap_elem, &sta->sta.ht_cap); |
| 1767 | |
| 1768 | ap_ht_cap_flags = sta->sta.ht_cap.cap; |
| 1769 | |
| 1770 | rcu_read_unlock(); |
| 1771 | |
| 1772 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
| 1773 | ap_ht_cap_flags); |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1774 | } |
| 1775 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1776 | if (elems.country_elem) { |
| 1777 | /* Note we are only reviewing this on beacons |
| 1778 | * for the BSSID we are associated to */ |
| 1779 | regulatory_hint_11d(local->hw.wiphy, |
| 1780 | elems.country_elem, elems.country_elem_len); |
| 1781 | } |
| 1782 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1783 | ieee80211_bss_info_change_notify(sdata, changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1784 | } |
| 1785 | |
| 1786 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1787 | 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] | 1788 | struct ieee80211_if_sta *ifsta, |
| 1789 | struct ieee80211_mgmt *mgmt, |
| 1790 | size_t len, |
| 1791 | struct ieee80211_rx_status *rx_status) |
| 1792 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1793 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1794 | int tx_last_beacon; |
| 1795 | struct sk_buff *skb; |
| 1796 | struct ieee80211_mgmt *resp; |
| 1797 | u8 *pos, *end; |
| 1798 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1799 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC || |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1800 | ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1801 | len < 24 + 2 || !ifsta->probe_resp) |
| 1802 | return; |
| 1803 | |
| 1804 | if (local->ops->tx_last_beacon) |
| 1805 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); |
| 1806 | else |
| 1807 | tx_last_beacon = 1; |
| 1808 | |
| 1809 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1810 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" |
| 1811 | " (tx_last_beacon=%d)\n", |
| 1812 | sdata->dev->name, mgmt->sa, mgmt->da, |
| 1813 | mgmt->bssid, tx_last_beacon); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1814 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 1815 | |
| 1816 | if (!tx_last_beacon) |
| 1817 | return; |
| 1818 | |
| 1819 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && |
| 1820 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) |
| 1821 | return; |
| 1822 | |
| 1823 | end = ((u8 *) mgmt) + len; |
| 1824 | pos = mgmt->u.probe_req.variable; |
| 1825 | if (pos[0] != WLAN_EID_SSID || |
| 1826 | pos + 2 + pos[1] > end) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1827 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 1828 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1829 | "from %pM\n", |
| 1830 | sdata->dev->name, mgmt->sa); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1831 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1832 | return; |
| 1833 | } |
| 1834 | if (pos[1] != 0 && |
| 1835 | (pos[1] != ifsta->ssid_len || |
| 1836 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { |
| 1837 | /* Ignore ProbeReq for foreign SSID */ |
| 1838 | return; |
| 1839 | } |
| 1840 | |
| 1841 | /* Reply with ProbeResp */ |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 1842 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1843 | if (!skb) |
| 1844 | return; |
| 1845 | |
| 1846 | resp = (struct ieee80211_mgmt *) skb->data; |
| 1847 | memcpy(resp->da, mgmt->sa, ETH_ALEN); |
| 1848 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1849 | printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", |
| 1850 | sdata->dev->name, resp->da); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1851 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 1852 | ieee80211_tx_skb(sdata, skb, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1853 | } |
| 1854 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1855 | 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] | 1856 | struct ieee80211_rx_status *rx_status) |
| 1857 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1858 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1859 | struct ieee80211_if_sta *ifsta; |
| 1860 | struct ieee80211_mgmt *mgmt; |
| 1861 | u16 fc; |
| 1862 | |
| 1863 | if (skb->len < 24) |
| 1864 | goto fail; |
| 1865 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1866 | ifsta = &sdata->u.sta; |
| 1867 | |
| 1868 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 1869 | fc = le16_to_cpu(mgmt->frame_control); |
| 1870 | |
| 1871 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 1872 | case IEEE80211_STYPE_PROBE_REQ: |
| 1873 | case IEEE80211_STYPE_PROBE_RESP: |
| 1874 | case IEEE80211_STYPE_BEACON: |
| 1875 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
| 1876 | case IEEE80211_STYPE_AUTH: |
| 1877 | case IEEE80211_STYPE_ASSOC_RESP: |
| 1878 | case IEEE80211_STYPE_REASSOC_RESP: |
| 1879 | case IEEE80211_STYPE_DEAUTH: |
| 1880 | case IEEE80211_STYPE_DISASSOC: |
| 1881 | skb_queue_tail(&ifsta->skb_queue, skb); |
| 1882 | queue_work(local->hw.workqueue, &ifsta->work); |
| 1883 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1884 | } |
| 1885 | |
| 1886 | fail: |
| 1887 | kfree_skb(skb); |
| 1888 | } |
| 1889 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1890 | 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] | 1891 | struct sk_buff *skb) |
| 1892 | { |
| 1893 | struct ieee80211_rx_status *rx_status; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1894 | struct ieee80211_if_sta *ifsta; |
| 1895 | struct ieee80211_mgmt *mgmt; |
| 1896 | u16 fc; |
| 1897 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1898 | ifsta = &sdata->u.sta; |
| 1899 | |
| 1900 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
| 1901 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 1902 | fc = le16_to_cpu(mgmt->frame_control); |
| 1903 | |
| 1904 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 1905 | case IEEE80211_STYPE_PROBE_REQ: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1906 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1907 | rx_status); |
| 1908 | break; |
| 1909 | case IEEE80211_STYPE_PROBE_RESP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1910 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1911 | break; |
| 1912 | case IEEE80211_STYPE_BEACON: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1913 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1914 | break; |
| 1915 | case IEEE80211_STYPE_AUTH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1916 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1917 | break; |
| 1918 | case IEEE80211_STYPE_ASSOC_RESP: |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1919 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1920 | break; |
| 1921 | case IEEE80211_STYPE_REASSOC_RESP: |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1922 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1923 | break; |
| 1924 | case IEEE80211_STYPE_DEAUTH: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1925 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1926 | break; |
| 1927 | case IEEE80211_STYPE_DISASSOC: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1928 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1929 | break; |
| 1930 | } |
| 1931 | |
| 1932 | kfree_skb(skb); |
| 1933 | } |
| 1934 | |
| 1935 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1936 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1937 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1938 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1939 | int active = 0; |
| 1940 | struct sta_info *sta; |
| 1941 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1942 | rcu_read_lock(); |
| 1943 | |
| 1944 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 1945 | if (sta->sdata == sdata && |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1946 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
| 1947 | jiffies)) { |
| 1948 | active++; |
| 1949 | break; |
| 1950 | } |
| 1951 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1952 | |
| 1953 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1954 | |
| 1955 | return active; |
| 1956 | } |
| 1957 | |
| 1958 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1959 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1960 | struct ieee80211_if_sta *ifsta) |
| 1961 | { |
| 1962 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 1963 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1964 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
| 1965 | if (ieee80211_sta_active_ibss(sdata)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1966 | return; |
| 1967 | |
| 1968 | 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] | 1969 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1970 | ieee80211_request_scan(sdata, ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1971 | } |
| 1972 | |
| 1973 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 1974 | static void ieee80211_sta_timer(unsigned long data) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1975 | { |
| 1976 | struct ieee80211_sub_if_data *sdata = |
| 1977 | (struct ieee80211_sub_if_data *) data; |
| 1978 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1979 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1980 | |
| 1981 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 1982 | queue_work(local->hw.workqueue, &ifsta->work); |
| 1983 | } |
| 1984 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1985 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1986 | struct ieee80211_if_sta *ifsta) |
| 1987 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1988 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1989 | |
| 1990 | if (local->ops->reset_tsf) { |
| 1991 | /* Reset own TSF to allow time synchronization work. */ |
| 1992 | local->ops->reset_tsf(local_to_hw(local)); |
| 1993 | } |
| 1994 | |
| 1995 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ |
| 1996 | |
| 1997 | |
| 1998 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 1999 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
| 2000 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 2001 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; |
| 2002 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 2003 | ifsta->auth_alg = WLAN_AUTH_LEAP; |
| 2004 | else |
| 2005 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2006 | ifsta->auth_transaction = -1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2007 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 2008 | ifsta->assoc_scan_tries = 0; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2009 | ifsta->direct_probe_tries = 0; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 2010 | ifsta->auth_tries = 0; |
| 2011 | ifsta->assoc_tries = 0; |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 2012 | netif_tx_stop_all_queues(sdata->dev); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2013 | netif_carrier_off(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2014 | } |
| 2015 | |
| 2016 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2017 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, |
| 2018 | const char *ssid, int ssid_len) |
| 2019 | { |
| 2020 | int tmp, hidden_ssid; |
| 2021 | |
Michael Wu | 4822570 | 2007-10-19 17:14:36 -0400 | [diff] [blame] | 2022 | if (ssid_len == ifsta->ssid_len && |
| 2023 | !memcmp(ifsta->ssid, ssid, ssid_len)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2024 | return 1; |
| 2025 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2026 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2027 | return 0; |
| 2028 | |
| 2029 | hidden_ssid = 1; |
| 2030 | tmp = ssid_len; |
| 2031 | while (tmp--) { |
| 2032 | if (ssid[tmp] != '\0') { |
| 2033 | hidden_ssid = 0; |
| 2034 | break; |
| 2035 | } |
| 2036 | } |
| 2037 | |
Fabio Rossi | cb3da8c | 2008-11-26 22:44:23 +0100 | [diff] [blame] | 2038 | if (hidden_ssid && (ifsta->ssid_len == ssid_len || ssid_len == 0)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2039 | return 1; |
| 2040 | |
| 2041 | if (ssid_len == 1 && ssid[0] == ' ') |
| 2042 | return 1; |
| 2043 | |
| 2044 | return 0; |
| 2045 | } |
| 2046 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2047 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2048 | struct ieee80211_if_sta *ifsta) |
| 2049 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2050 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2051 | struct ieee80211_bss *bss; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2052 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2053 | u8 bssid[ETH_ALEN], *pos; |
| 2054 | int i; |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2055 | int ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2056 | |
| 2057 | #if 0 |
| 2058 | /* Easier testing, use fixed BSSID. */ |
| 2059 | memset(bssid, 0xfe, ETH_ALEN); |
| 2060 | #else |
| 2061 | /* Generate random, not broadcast, locally administered BSSID. Mix in |
| 2062 | * own MAC address to make sure that devices that do not have proper |
| 2063 | * random number generator get different BSSID. */ |
| 2064 | get_random_bytes(bssid, ETH_ALEN); |
| 2065 | for (i = 0; i < ETH_ALEN; i++) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2066 | bssid[i] ^= sdata->dev->dev_addr[i]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2067 | bssid[0] &= ~0x01; |
| 2068 | bssid[0] |= 0x02; |
| 2069 | #endif |
| 2070 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2071 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", |
| 2072 | sdata->dev->name, bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2073 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 2074 | bss = ieee80211_rx_bss_add(local, bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2075 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 2076 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2077 | if (!bss) |
| 2078 | return -ENOMEM; |
| 2079 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2080 | bss->band = local->hw.conf.channel->band; |
| 2081 | sband = local->hw.wiphy->bands[bss->band]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2082 | |
| 2083 | if (local->hw.conf.beacon_int == 0) |
Tomas Winkler | dc0ae30 | 2008-06-12 22:38:37 +0300 | [diff] [blame] | 2084 | local->hw.conf.beacon_int = 100; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2085 | bss->beacon_int = local->hw.conf.beacon_int; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2086 | bss->last_update = jiffies; |
| 2087 | bss->capability = WLAN_CAPABILITY_IBSS; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2088 | |
| 2089 | if (sdata->default_key) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2090 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2091 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2092 | sdata->drop_unencrypted = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2093 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2094 | bss->supp_rates_len = sband->n_bitrates; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2095 | pos = bss->supp_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2096 | for (i = 0; i < sband->n_bitrates; i++) { |
| 2097 | int rate = sband->bitrates[i].bitrate; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2098 | *pos++ = (u8) (rate / 5); |
| 2099 | } |
| 2100 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2101 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2102 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2103 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2104 | } |
| 2105 | |
| 2106 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2107 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2108 | struct ieee80211_if_sta *ifsta) |
| 2109 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2110 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2111 | struct ieee80211_bss *bss; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2112 | int found = 0; |
| 2113 | u8 bssid[ETH_ALEN]; |
| 2114 | int active_ibss; |
| 2115 | |
| 2116 | if (ifsta->ssid_len == 0) |
| 2117 | return -EINVAL; |
| 2118 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2119 | active_ibss = ieee80211_sta_active_ibss(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2120 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2121 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2122 | sdata->dev->name, active_ibss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2123 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2124 | spin_lock_bh(&local->bss_lock); |
| 2125 | list_for_each_entry(bss, &local->bss_list, list) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2126 | if (ifsta->ssid_len != bss->ssid_len || |
| 2127 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 |
| 2128 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) |
| 2129 | continue; |
| 2130 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2131 | printk(KERN_DEBUG " bssid=%pM found\n", bss->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2132 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2133 | memcpy(bssid, bss->bssid, ETH_ALEN); |
| 2134 | found = 1; |
| 2135 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) |
| 2136 | break; |
| 2137 | } |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2138 | spin_unlock_bh(&local->bss_lock); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2139 | |
| 2140 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Vladimir Koutny | 6e43829 | 2008-07-07 14:23:01 +0200 | [diff] [blame] | 2141 | if (found) |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2142 | printk(KERN_DEBUG " sta_find_ibss: selected %pM current " |
| 2143 | "%pM\n", bssid, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2144 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2145 | |
| 2146 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2147 | int ret; |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2148 | int search_freq; |
| 2149 | |
| 2150 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
| 2151 | search_freq = bss->freq; |
| 2152 | else |
| 2153 | search_freq = local->hw.conf.channel->center_freq; |
| 2154 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2155 | bss = ieee80211_rx_bss_get(local, bssid, search_freq, |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2156 | ifsta->ssid, ifsta->ssid_len); |
| 2157 | if (!bss) |
| 2158 | goto dont_join; |
| 2159 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2160 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2161 | " based on configured SSID\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2162 | sdata->dev->name, bssid); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2163 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2164 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2165 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2166 | } |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2167 | |
| 2168 | dont_join: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2169 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2170 | printk(KERN_DEBUG " did not try to join ibss\n"); |
| 2171 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2172 | |
| 2173 | /* Selected IBSS not found in current scan results - try to scan */ |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2174 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2175 | !ieee80211_sta_active_ibss(sdata)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2176 | mod_timer(&ifsta->timer, jiffies + |
| 2177 | IEEE80211_IBSS_MERGE_INTERVAL); |
| 2178 | } else if (time_after(jiffies, local->last_scan_completed + |
| 2179 | IEEE80211_SCAN_INTERVAL)) { |
| 2180 | 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] | 2181 | "join\n", sdata->dev->name); |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2182 | return ieee80211_request_scan(sdata, ifsta->ssid, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2183 | ifsta->ssid_len); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2184 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2185 | int interval = IEEE80211_SCAN_INTERVAL; |
| 2186 | |
| 2187 | if (time_after(jiffies, ifsta->ibss_join_req + |
| 2188 | IEEE80211_IBSS_JOIN_TIMEOUT)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2189 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2190 | (!(local->oper_channel->flags & |
| 2191 | IEEE80211_CHAN_NO_IBSS))) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2192 | return ieee80211_sta_create_ibss(sdata, ifsta); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2193 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2194 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2195 | " %d MHz\n", sdata->dev->name, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2196 | local->hw.conf.channel->center_freq); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2197 | } |
| 2198 | |
| 2199 | /* No IBSS found - decrease scan interval and continue |
| 2200 | * scanning. */ |
| 2201 | interval = IEEE80211_SCAN_INTERVAL_SLOW; |
| 2202 | } |
| 2203 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2204 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2205 | mod_timer(&ifsta->timer, jiffies + interval); |
| 2206 | return 0; |
| 2207 | } |
| 2208 | |
| 2209 | return 0; |
| 2210 | } |
| 2211 | |
| 2212 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2213 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
| 2214 | struct ieee80211_if_sta *ifsta) |
| 2215 | { |
| 2216 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2217 | struct ieee80211_bss *bss, *selected = NULL; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2218 | int top_rssi = 0, freq; |
| 2219 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2220 | spin_lock_bh(&local->bss_lock); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2221 | freq = local->oper_channel->center_freq; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2222 | list_for_each_entry(bss, &local->bss_list, list) { |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2223 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) |
| 2224 | continue; |
| 2225 | |
| 2226 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
| 2227 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 2228 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && |
| 2229 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ |
| 2230 | !!sdata->default_key)) |
| 2231 | continue; |
| 2232 | |
| 2233 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
| 2234 | bss->freq != freq) |
| 2235 | continue; |
| 2236 | |
| 2237 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
| 2238 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
| 2239 | continue; |
| 2240 | |
| 2241 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
| 2242 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
| 2243 | continue; |
| 2244 | |
| 2245 | if (!selected || top_rssi < bss->signal) { |
| 2246 | selected = bss; |
| 2247 | top_rssi = bss->signal; |
| 2248 | } |
| 2249 | } |
| 2250 | if (selected) |
| 2251 | atomic_inc(&selected->users); |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2252 | spin_unlock_bh(&local->bss_lock); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2253 | |
| 2254 | if (selected) { |
| 2255 | ieee80211_set_freq(sdata, selected->freq); |
| 2256 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
| 2257 | ieee80211_sta_set_ssid(sdata, selected->ssid, |
| 2258 | selected->ssid_len); |
| 2259 | ieee80211_sta_set_bssid(sdata, selected->bssid); |
Johannes Berg | b079ada | 2008-09-09 09:32:59 +0200 | [diff] [blame] | 2260 | ieee80211_sta_def_wmm_params(sdata, selected); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2261 | |
| 2262 | /* Send out direct probe if no probe resp was received or |
| 2263 | * the one we have is outdated |
| 2264 | */ |
| 2265 | if (!selected->last_probe_resp || |
| 2266 | time_after(jiffies, selected->last_probe_resp |
| 2267 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
| 2268 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 2269 | else |
| 2270 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 2271 | |
| 2272 | ieee80211_rx_bss_put(local, selected); |
| 2273 | ieee80211_sta_reset_auth(sdata, ifsta); |
| 2274 | return 0; |
| 2275 | } else { |
| 2276 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
| 2277 | ifsta->assoc_scan_tries++; |
| 2278 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2279 | ieee80211_start_scan(sdata, NULL, 0); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2280 | else |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2281 | ieee80211_start_scan(sdata, ifsta->ssid, |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2282 | ifsta->ssid_len); |
| 2283 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 2284 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
| 2285 | } else |
| 2286 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
| 2287 | } |
| 2288 | return -1; |
| 2289 | } |
| 2290 | |
| 2291 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2292 | static void ieee80211_sta_work(struct work_struct *work) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2293 | { |
| 2294 | struct ieee80211_sub_if_data *sdata = |
| 2295 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); |
| 2296 | struct ieee80211_local *local = sdata->local; |
| 2297 | struct ieee80211_if_sta *ifsta; |
| 2298 | struct sk_buff *skb; |
| 2299 | |
| 2300 | if (!netif_running(sdata->dev)) |
| 2301 | return; |
| 2302 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2303 | if (local->sw_scanning || local->hw_scanning) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2304 | return; |
| 2305 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2306 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION && |
| 2307 | sdata->vif.type != NL80211_IFTYPE_ADHOC)) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2308 | return; |
| 2309 | ifsta = &sdata->u.sta; |
| 2310 | |
| 2311 | while ((skb = skb_dequeue(&ifsta->skb_queue))) |
| 2312 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
| 2313 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2314 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
| 2315 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
| 2316 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && |
| 2317 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2318 | ieee80211_start_scan(sdata, ifsta->scan_ssid, |
| 2319 | ifsta->scan_ssid_len); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2320 | return; |
| 2321 | } |
| 2322 | |
| 2323 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { |
| 2324 | if (ieee80211_sta_config_auth(sdata, ifsta)) |
| 2325 | return; |
| 2326 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 2327 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) |
| 2328 | return; |
| 2329 | |
| 2330 | switch (ifsta->state) { |
| 2331 | case IEEE80211_STA_MLME_DISABLED: |
| 2332 | break; |
| 2333 | case IEEE80211_STA_MLME_DIRECT_PROBE: |
| 2334 | ieee80211_direct_probe(sdata, ifsta); |
| 2335 | break; |
| 2336 | case IEEE80211_STA_MLME_AUTHENTICATE: |
| 2337 | ieee80211_authenticate(sdata, ifsta); |
| 2338 | break; |
| 2339 | case IEEE80211_STA_MLME_ASSOCIATE: |
| 2340 | ieee80211_associate(sdata, ifsta); |
| 2341 | break; |
| 2342 | case IEEE80211_STA_MLME_ASSOCIATED: |
| 2343 | ieee80211_associated(sdata, ifsta); |
| 2344 | break; |
| 2345 | case IEEE80211_STA_MLME_IBSS_SEARCH: |
| 2346 | ieee80211_sta_find_ibss(sdata, ifsta); |
| 2347 | break; |
| 2348 | case IEEE80211_STA_MLME_IBSS_JOINED: |
| 2349 | ieee80211_sta_merge_ibss(sdata, ifsta); |
| 2350 | break; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2351 | default: |
| 2352 | WARN_ON(1); |
| 2353 | break; |
| 2354 | } |
| 2355 | |
| 2356 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
| 2357 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
| 2358 | "mixed-cell disabled - disassociate\n", sdata->dev->name); |
| 2359 | |
| 2360 | ieee80211_set_disassoc(sdata, ifsta, false, true, |
| 2361 | WLAN_REASON_UNSPECIFIED); |
| 2362 | } |
| 2363 | } |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2364 | |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2365 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
| 2366 | { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2367 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
Johannes Berg | 7c95069 | 2008-09-11 00:01:48 +0200 | [diff] [blame] | 2368 | queue_work(sdata->local->hw.workqueue, |
| 2369 | &sdata->u.sta.work); |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2370 | } |
| 2371 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2372 | /* interface setup */ |
| 2373 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) |
| 2374 | { |
| 2375 | struct ieee80211_if_sta *ifsta; |
| 2376 | |
| 2377 | ifsta = &sdata->u.sta; |
| 2378 | INIT_WORK(&ifsta->work, ieee80211_sta_work); |
| 2379 | setup_timer(&ifsta->timer, ieee80211_sta_timer, |
| 2380 | (unsigned long) sdata); |
| 2381 | skb_queue_head_init(&ifsta->skb_queue); |
| 2382 | |
| 2383 | ifsta->capab = WLAN_CAPABILITY_ESS; |
| 2384 | ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN | |
| 2385 | IEEE80211_AUTH_ALG_SHARED_KEY; |
| 2386 | ifsta->flags |= IEEE80211_STA_CREATE_IBSS | |
| 2387 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 2388 | IEEE80211_STA_AUTO_CHANNEL_SEL; |
| 2389 | if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4) |
| 2390 | ifsta->flags |= IEEE80211_STA_WMM_ENABLED; |
| 2391 | } |
| 2392 | |
| 2393 | /* |
| 2394 | * Add a new IBSS station, will also be called by the RX code when, |
| 2395 | * in IBSS mode, receiving a frame from a yet-unknown station, hence |
| 2396 | * must be callable in atomic context. |
| 2397 | */ |
| 2398 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
Rami Rosen | ab1f5c0 | 2008-12-11 14:00:25 +0200 | [diff] [blame] | 2399 | u8 *bssid,u8 *addr, u64 supp_rates) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2400 | { |
| 2401 | struct ieee80211_local *local = sdata->local; |
| 2402 | struct sta_info *sta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2403 | int band = local->hw.conf.channel->band; |
| 2404 | |
| 2405 | /* TODO: Could consider removing the least recently used entry and |
| 2406 | * allow new one to be added. */ |
| 2407 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { |
| 2408 | if (net_ratelimit()) { |
| 2409 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2410 | "entry %pM\n", sdata->dev->name, addr); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2411 | } |
| 2412 | return NULL; |
| 2413 | } |
| 2414 | |
| 2415 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
| 2416 | return NULL; |
| 2417 | |
| 2418 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2419 | printk(KERN_DEBUG "%s: Adding new IBSS station %pM (dev=%s)\n", |
| 2420 | wiphy_name(local->hw.wiphy), addr, sdata->dev->name); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2421 | #endif |
| 2422 | |
| 2423 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
| 2424 | if (!sta) |
| 2425 | return NULL; |
| 2426 | |
| 2427 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
| 2428 | |
| 2429 | /* make sure mandatory rates are always added */ |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 2430 | sta->sta.supp_rates[band] = supp_rates | |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 2431 | ieee80211_mandatory_rates(local, band); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2432 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2433 | rate_control_rate_init(sta); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2434 | |
| 2435 | if (sta_info_insert(sta)) |
| 2436 | return NULL; |
| 2437 | |
| 2438 | return sta; |
| 2439 | } |
| 2440 | |
| 2441 | /* configuration hooks */ |
| 2442 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
| 2443 | struct ieee80211_if_sta *ifsta) |
| 2444 | { |
| 2445 | struct ieee80211_local *local = sdata->local; |
| 2446 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2447 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2448 | return; |
| 2449 | |
| 2450 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
| 2451 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
| 2452 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
| 2453 | IEEE80211_STA_AUTO_SSID_SEL))) { |
| 2454 | |
| 2455 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) |
| 2456 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 2457 | WLAN_REASON_DEAUTH_LEAVING); |
| 2458 | |
| 2459 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
| 2460 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2461 | } |
| 2462 | } |
| 2463 | |
| 2464 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
| 2465 | { |
| 2466 | struct ieee80211_if_sta *ifsta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2467 | |
| 2468 | if (len > IEEE80211_MAX_SSID_LEN) |
| 2469 | return -EINVAL; |
| 2470 | |
| 2471 | ifsta = &sdata->u.sta; |
| 2472 | |
| 2473 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
| 2474 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); |
| 2475 | memcpy(ifsta->ssid, ssid, len); |
| 2476 | ifsta->ssid_len = len; |
| 2477 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2478 | } |
| 2479 | |
| 2480 | if (len) |
| 2481 | ifsta->flags |= IEEE80211_STA_SSID_SET; |
| 2482 | else |
| 2483 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; |
| 2484 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2485 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2486 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
| 2487 | ifsta->ibss_join_req = jiffies; |
| 2488 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
| 2489 | return ieee80211_sta_find_ibss(sdata, ifsta); |
| 2490 | } |
| 2491 | |
| 2492 | return 0; |
| 2493 | } |
| 2494 | |
| 2495 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
| 2496 | { |
| 2497 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2498 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); |
| 2499 | *len = ifsta->ssid_len; |
| 2500 | return 0; |
| 2501 | } |
| 2502 | |
| 2503 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
| 2504 | { |
| 2505 | struct ieee80211_if_sta *ifsta; |
| 2506 | int res; |
| 2507 | |
| 2508 | ifsta = &sdata->u.sta; |
| 2509 | |
| 2510 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { |
| 2511 | memcpy(ifsta->bssid, bssid, ETH_ALEN); |
| 2512 | res = 0; |
| 2513 | /* |
| 2514 | * Hack! See also ieee80211_sta_set_ssid. |
| 2515 | */ |
| 2516 | if (netif_running(sdata->dev)) |
| 2517 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
| 2518 | if (res) { |
| 2519 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " |
| 2520 | "the low-level driver\n", sdata->dev->name); |
| 2521 | return res; |
| 2522 | } |
| 2523 | } |
| 2524 | |
| 2525 | if (is_valid_ether_addr(bssid)) |
| 2526 | ifsta->flags |= IEEE80211_STA_BSSID_SET; |
| 2527 | else |
| 2528 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
| 2529 | |
| 2530 | return 0; |
| 2531 | } |
| 2532 | |
| 2533 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
| 2534 | { |
| 2535 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2536 | |
| 2537 | kfree(ifsta->extra_ie); |
| 2538 | if (len == 0) { |
| 2539 | ifsta->extra_ie = NULL; |
| 2540 | ifsta->extra_ie_len = 0; |
| 2541 | return 0; |
| 2542 | } |
| 2543 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); |
| 2544 | if (!ifsta->extra_ie) { |
| 2545 | ifsta->extra_ie_len = 0; |
| 2546 | return -ENOMEM; |
| 2547 | } |
| 2548 | memcpy(ifsta->extra_ie, ie, len); |
| 2549 | ifsta->extra_ie_len = len; |
| 2550 | return 0; |
| 2551 | } |
| 2552 | |
| 2553 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
| 2554 | { |
| 2555 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2556 | |
| 2557 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
| 2558 | sdata->dev->name, reason); |
| 2559 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2560 | if (sdata->vif.type != NL80211_IFTYPE_STATION && |
| 2561 | sdata->vif.type != NL80211_IFTYPE_ADHOC) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2562 | return -EINVAL; |
| 2563 | |
| 2564 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
| 2565 | return 0; |
| 2566 | } |
| 2567 | |
| 2568 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
| 2569 | { |
| 2570 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2571 | |
| 2572 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
| 2573 | sdata->dev->name, reason); |
| 2574 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2575 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2576 | return -EINVAL; |
| 2577 | |
| 2578 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
| 2579 | return -1; |
| 2580 | |
| 2581 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
| 2582 | return 0; |
| 2583 | } |
| 2584 | |
| 2585 | /* scan finished notification */ |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2586 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) |
| 2587 | { |
| 2588 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
| 2589 | struct ieee80211_if_sta *ifsta; |
| 2590 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2591 | if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2592 | ifsta = &sdata->u.sta; |
| 2593 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
| 2594 | (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) && |
| 2595 | !ieee80211_sta_active_ibss(sdata))) |
| 2596 | ieee80211_sta_find_ibss(sdata, ifsta); |
| 2597 | } |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2598 | |
| 2599 | /* Restart STA timers */ |
| 2600 | rcu_read_lock(); |
| 2601 | list_for_each_entry_rcu(sdata, &local->interfaces, list) |
| 2602 | ieee80211_restart_sta_timer(sdata); |
| 2603 | rcu_read_unlock(); |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2604 | } |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2605 | |
| 2606 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
| 2607 | { |
| 2608 | struct ieee80211_local *local = |
| 2609 | container_of(work, struct ieee80211_local, |
| 2610 | dynamic_ps_disable_work); |
| 2611 | |
| 2612 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
| 2613 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 2614 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 2615 | } |
| 2616 | |
| 2617 | ieee80211_wake_queues_by_reason(&local->hw, |
| 2618 | IEEE80211_QUEUE_STOP_REASON_PS); |
| 2619 | } |
| 2620 | |
| 2621 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) |
| 2622 | { |
| 2623 | struct ieee80211_local *local = |
| 2624 | container_of(work, struct ieee80211_local, |
| 2625 | dynamic_ps_enable_work); |
| 2626 | |
| 2627 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
| 2628 | return; |
| 2629 | |
| 2630 | local->hw.conf.flags |= IEEE80211_CONF_PS; |
| 2631 | |
| 2632 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 2633 | } |
| 2634 | |
| 2635 | void ieee80211_dynamic_ps_timer(unsigned long data) |
| 2636 | { |
| 2637 | struct ieee80211_local *local = (void *) data; |
| 2638 | |
| 2639 | queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); |
| 2640 | } |