Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * BSS client mode implementation |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 3 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4 | * Copyright 2004, Instant802 Networks, Inc. |
| 5 | * Copyright 2005, Devicescape Software, Inc. |
| 6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| 7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
Geert Uytterhoeven | 5b323ed | 2007-05-08 18:40:27 -0700 | [diff] [blame] | 14 | #include <linux/delay.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 15 | #include <linux/if_ether.h> |
| 16 | #include <linux/skbuff.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 17 | #include <linux/if_arp.h> |
| 18 | #include <linux/wireless.h> |
| 19 | #include <linux/random.h> |
| 20 | #include <linux/etherdevice.h> |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 21 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 22 | #include <net/iw_handler.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 23 | #include <net/mac80211.h> |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 24 | #include <asm/unaligned.h> |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 25 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 26 | #include "ieee80211_i.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 27 | #include "rate.h" |
| 28 | #include "led.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 29 | |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 30 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 31 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
| 32 | #define IEEE80211_AUTH_MAX_TRIES 3 |
| 33 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) |
| 34 | #define IEEE80211_ASSOC_MAX_TRIES 3 |
| 35 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) |
| 36 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
| 37 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) |
| 38 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) |
| 39 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) |
Dan Williams | 872ba53 | 2008-06-04 13:59:34 -0400 | [diff] [blame] | 40 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 41 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 42 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) |
| 43 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) |
| 44 | |
| 45 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 |
| 46 | |
| 47 | |
Johannes Berg | 5484e23 | 2008-09-08 17:44:27 +0200 | [diff] [blame] | 48 | /* utils */ |
| 49 | static int ecw2cw(int ecw) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 50 | { |
Johannes Berg | 5484e23 | 2008-09-08 17:44:27 +0200 | [diff] [blame] | 51 | return (1 << ecw) - 1; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 52 | } |
| 53 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 54 | static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 55 | { |
| 56 | u8 *end, *pos; |
| 57 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 58 | pos = bss->cbss.information_elements; |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 59 | if (pos == NULL) |
| 60 | return NULL; |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 61 | end = pos + bss->cbss.len_information_elements; |
Jouni Malinen | 43ac2ca | 2008-08-15 22:21:27 +0300 | [diff] [blame] | 62 | |
| 63 | while (pos + 1 < end) { |
| 64 | if (pos + 2 + pos[1] > end) |
| 65 | break; |
| 66 | if (pos[0] == ie) |
| 67 | return pos; |
| 68 | pos += 2 + pos[1]; |
| 69 | } |
| 70 | |
| 71 | return NULL; |
| 72 | } |
| 73 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 74 | static int ieee80211_compatible_rates(struct ieee80211_bss *bss, |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 75 | struct ieee80211_supported_band *sband, |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 76 | u32 *rates) |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 77 | { |
| 78 | int i, j, count; |
| 79 | *rates = 0; |
| 80 | count = 0; |
| 81 | for (i = 0; i < bss->supp_rates_len; i++) { |
| 82 | int rate = (bss->supp_rates[i] & 0x7F) * 5; |
| 83 | |
| 84 | for (j = 0; j < sband->n_bitrates; j++) |
| 85 | if (sband->bitrates[j].bitrate == rate) { |
| 86 | *rates |= BIT(j); |
| 87 | count++; |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | return count; |
| 93 | } |
| 94 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 95 | /* also used by mesh code */ |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 96 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 97 | struct ieee802_11_elems *elems, |
| 98 | enum ieee80211_band band) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 99 | { |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 100 | struct ieee80211_supported_band *sband; |
| 101 | struct ieee80211_rate *bitrates; |
| 102 | size_t num_rates; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 103 | u32 supp_rates; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 104 | int i, j; |
| 105 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 106 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 107 | if (!sband) { |
| 108 | WARN_ON(1); |
| 109 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 110 | } |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 111 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 112 | bitrates = sband->bitrates; |
| 113 | num_rates = sband->n_bitrates; |
| 114 | supp_rates = 0; |
| 115 | for (i = 0; i < elems->supp_rates_len + |
| 116 | elems->ext_supp_rates_len; i++) { |
| 117 | u8 rate = 0; |
| 118 | int own_rate; |
| 119 | if (i < elems->supp_rates_len) |
| 120 | rate = elems->supp_rates[i]; |
| 121 | else if (elems->ext_supp_rates) |
| 122 | rate = elems->ext_supp_rates |
| 123 | [i - elems->supp_rates_len]; |
| 124 | own_rate = 5 * (rate & 0x7f); |
| 125 | for (j = 0; j < num_rates; j++) |
| 126 | if (bitrates[j].bitrate == own_rate) |
| 127 | supp_rates |= BIT(j); |
| 128 | } |
| 129 | return supp_rates; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 130 | } |
| 131 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 132 | /* frame sending functions */ |
| 133 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 134 | static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len) |
| 135 | { |
| 136 | if (ies) |
| 137 | memcpy(skb_put(skb, ies_len), ies, ies_len); |
| 138 | } |
| 139 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 140 | /* also used by scanning code */ |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 141 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
| 142 | u8 *ssid, size_t ssid_len) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 143 | { |
| 144 | struct ieee80211_local *local = sdata->local; |
| 145 | struct ieee80211_supported_band *sband; |
| 146 | struct sk_buff *skb; |
| 147 | struct ieee80211_mgmt *mgmt; |
| 148 | u8 *pos, *supp_rates, *esupp_rates = NULL; |
| 149 | int i; |
| 150 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 151 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + |
| 152 | sdata->u.sta.ie_probereq_len); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 153 | if (!skb) { |
| 154 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
| 155 | "request\n", sdata->dev->name); |
| 156 | return; |
| 157 | } |
| 158 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 159 | |
| 160 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 161 | memset(mgmt, 0, 24); |
| 162 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 163 | IEEE80211_STYPE_PROBE_REQ); |
| 164 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 165 | if (dst) { |
| 166 | memcpy(mgmt->da, dst, ETH_ALEN); |
| 167 | memcpy(mgmt->bssid, dst, ETH_ALEN); |
| 168 | } else { |
| 169 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 170 | memset(mgmt->bssid, 0xff, ETH_ALEN); |
| 171 | } |
| 172 | pos = skb_put(skb, 2 + ssid_len); |
| 173 | *pos++ = WLAN_EID_SSID; |
| 174 | *pos++ = ssid_len; |
| 175 | memcpy(pos, ssid, ssid_len); |
| 176 | |
| 177 | supp_rates = skb_put(skb, 2); |
| 178 | supp_rates[0] = WLAN_EID_SUPP_RATES; |
| 179 | supp_rates[1] = 0; |
| 180 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 181 | |
| 182 | for (i = 0; i < sband->n_bitrates; i++) { |
| 183 | struct ieee80211_rate *rate = &sband->bitrates[i]; |
| 184 | if (esupp_rates) { |
| 185 | pos = skb_put(skb, 1); |
| 186 | esupp_rates[1]++; |
| 187 | } else if (supp_rates[1] == 8) { |
| 188 | esupp_rates = skb_put(skb, 3); |
| 189 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; |
| 190 | esupp_rates[1] = 1; |
| 191 | pos = &esupp_rates[2]; |
| 192 | } else { |
| 193 | pos = skb_put(skb, 1); |
| 194 | supp_rates[1]++; |
| 195 | } |
| 196 | *pos = rate->bitrate / 5; |
| 197 | } |
| 198 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 199 | add_extra_ies(skb, sdata->u.sta.ie_probereq, |
| 200 | sdata->u.sta.ie_probereq_len); |
| 201 | |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 202 | ieee80211_tx_skb(sdata, skb, 0); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 203 | } |
| 204 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 205 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
| 206 | struct ieee80211_if_sta *ifsta, |
| 207 | int transaction, u8 *extra, size_t extra_len, |
| 208 | int encrypt) |
| 209 | { |
| 210 | struct ieee80211_local *local = sdata->local; |
| 211 | struct sk_buff *skb; |
| 212 | struct ieee80211_mgmt *mgmt; |
| 213 | |
| 214 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 215 | sizeof(*mgmt) + 6 + extra_len + |
| 216 | sdata->u.sta.ie_auth_len); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 217 | if (!skb) { |
| 218 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " |
| 219 | "frame\n", sdata->dev->name); |
| 220 | return; |
| 221 | } |
| 222 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 223 | |
| 224 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); |
| 225 | memset(mgmt, 0, 24 + 6); |
| 226 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 227 | IEEE80211_STYPE_AUTH); |
| 228 | if (encrypt) |
| 229 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 230 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 231 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 232 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 233 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); |
| 234 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
| 235 | ifsta->auth_transaction = transaction + 1; |
| 236 | mgmt->u.auth.status_code = cpu_to_le16(0); |
| 237 | if (extra) |
| 238 | memcpy(skb_put(skb, extra_len), extra, extra_len); |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 239 | add_extra_ies(skb, sdata->u.sta.ie_auth, sdata->u.sta.ie_auth_len); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 240 | |
| 241 | ieee80211_tx_skb(sdata, skb, encrypt); |
| 242 | } |
| 243 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 244 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
| 245 | struct ieee80211_if_sta *ifsta) |
| 246 | { |
| 247 | struct ieee80211_local *local = sdata->local; |
| 248 | struct sk_buff *skb; |
| 249 | struct ieee80211_mgmt *mgmt; |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 250 | u8 *pos, *ies, *ht_ie, *e_ies; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 251 | int i, len, count, rates_len, supp_rates_len; |
| 252 | u16 capab; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 253 | struct ieee80211_bss *bss; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 254 | int wmm = 0; |
| 255 | struct ieee80211_supported_band *sband; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 256 | u32 rates = 0; |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 257 | size_t e_ies_len; |
| 258 | |
| 259 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
| 260 | e_ies = sdata->u.sta.ie_reassocreq; |
| 261 | e_ies_len = sdata->u.sta.ie_reassocreq_len; |
| 262 | } else { |
| 263 | e_ies = sdata->u.sta.ie_assocreq; |
| 264 | e_ies_len = sdata->u.sta.ie_assocreq_len; |
| 265 | } |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 266 | |
| 267 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 268 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 269 | ifsta->ssid_len + e_ies_len); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 270 | if (!skb) { |
| 271 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " |
| 272 | "frame\n", sdata->dev->name); |
| 273 | return; |
| 274 | } |
| 275 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 276 | |
| 277 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 278 | |
| 279 | capab = ifsta->capab; |
| 280 | |
| 281 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { |
| 282 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) |
| 283 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
| 284 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) |
| 285 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; |
| 286 | } |
| 287 | |
| 288 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
| 289 | local->hw.conf.channel->center_freq, |
| 290 | ifsta->ssid, ifsta->ssid_len); |
| 291 | if (bss) { |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 292 | if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY) |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 293 | capab |= WLAN_CAPABILITY_PRIVACY; |
| 294 | if (bss->wmm_used) |
| 295 | wmm = 1; |
| 296 | |
| 297 | /* get all rates supported by the device and the AP as |
| 298 | * some APs don't like getting a superset of their rates |
| 299 | * in the association request (e.g. D-Link DAP 1353 in |
| 300 | * b-only mode) */ |
| 301 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); |
| 302 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 303 | if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 304 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
| 305 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
| 306 | |
| 307 | ieee80211_rx_bss_put(local, bss); |
| 308 | } else { |
| 309 | rates = ~0; |
| 310 | rates_len = sband->n_bitrates; |
| 311 | } |
| 312 | |
| 313 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 314 | memset(mgmt, 0, 24); |
| 315 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 316 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 317 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 318 | |
| 319 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
| 320 | skb_put(skb, 10); |
| 321 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 322 | IEEE80211_STYPE_REASSOC_REQ); |
| 323 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); |
| 324 | mgmt->u.reassoc_req.listen_interval = |
| 325 | cpu_to_le16(local->hw.conf.listen_interval); |
| 326 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, |
| 327 | ETH_ALEN); |
| 328 | } else { |
| 329 | skb_put(skb, 4); |
| 330 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 331 | IEEE80211_STYPE_ASSOC_REQ); |
| 332 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); |
Rami Rosen | 1355412 | 2008-12-16 22:38:29 +0200 | [diff] [blame] | 333 | mgmt->u.assoc_req.listen_interval = |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 334 | cpu_to_le16(local->hw.conf.listen_interval); |
| 335 | } |
| 336 | |
| 337 | /* SSID */ |
| 338 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 339 | *pos++ = WLAN_EID_SSID; |
| 340 | *pos++ = ifsta->ssid_len; |
| 341 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
| 342 | |
| 343 | /* add all rates which were marked to be used above */ |
| 344 | supp_rates_len = rates_len; |
| 345 | if (supp_rates_len > 8) |
| 346 | supp_rates_len = 8; |
| 347 | |
| 348 | len = sband->n_bitrates; |
| 349 | pos = skb_put(skb, supp_rates_len + 2); |
| 350 | *pos++ = WLAN_EID_SUPP_RATES; |
| 351 | *pos++ = supp_rates_len; |
| 352 | |
| 353 | count = 0; |
| 354 | for (i = 0; i < sband->n_bitrates; i++) { |
| 355 | if (BIT(i) & rates) { |
| 356 | int rate = sband->bitrates[i].bitrate; |
| 357 | *pos++ = (u8) (rate / 5); |
| 358 | if (++count == 8) |
| 359 | break; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | if (rates_len > count) { |
| 364 | pos = skb_put(skb, rates_len - count + 2); |
| 365 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 366 | *pos++ = rates_len - count; |
| 367 | |
| 368 | for (i++; i < sband->n_bitrates; i++) { |
| 369 | if (BIT(i) & rates) { |
| 370 | int rate = sband->bitrates[i].bitrate; |
| 371 | *pos++ = (u8) (rate / 5); |
| 372 | } |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
| 377 | /* 1. power capabilities */ |
| 378 | pos = skb_put(skb, 4); |
| 379 | *pos++ = WLAN_EID_PWR_CAPABILITY; |
| 380 | *pos++ = 2; |
| 381 | *pos++ = 0; /* min tx power */ |
| 382 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ |
| 383 | |
| 384 | /* 2. supported channels */ |
| 385 | /* TODO: get this in reg domain format */ |
| 386 | pos = skb_put(skb, 2 * sband->n_channels + 2); |
| 387 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; |
| 388 | *pos++ = 2 * sband->n_channels; |
| 389 | for (i = 0; i < sband->n_channels; i++) { |
| 390 | *pos++ = ieee80211_frequency_to_channel( |
| 391 | sband->channels[i].center_freq); |
| 392 | *pos++ = 1; /* one channel in the subband*/ |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | if (ifsta->extra_ie) { |
| 397 | pos = skb_put(skb, ifsta->extra_ie_len); |
| 398 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); |
| 399 | } |
| 400 | |
| 401 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
| 402 | pos = skb_put(skb, 9); |
| 403 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; |
| 404 | *pos++ = 7; /* len */ |
| 405 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ |
| 406 | *pos++ = 0x50; |
| 407 | *pos++ = 0xf2; |
| 408 | *pos++ = 2; /* WME */ |
| 409 | *pos++ = 0; /* WME info */ |
| 410 | *pos++ = 1; /* WME ver */ |
| 411 | *pos++ = 0; |
| 412 | } |
| 413 | |
| 414 | /* wmm support is a must to HT */ |
Vasanthakumar Thiagarajan | eb46936 | 2008-12-23 21:30:50 +0530 | [diff] [blame] | 415 | /* |
| 416 | * IEEE802.11n does not allow TKIP/WEP as pairwise |
| 417 | * ciphers in HT mode. We still associate in non-ht |
| 418 | * mode (11a/b/g) if any one of these ciphers is |
| 419 | * configured as pairwise. |
| 420 | */ |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 421 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 422 | sband->ht_cap.ht_supported && |
| 423 | (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && |
Vasanthakumar Thiagarajan | eb46936 | 2008-12-23 21:30:50 +0530 | [diff] [blame] | 424 | ht_ie[1] >= sizeof(struct ieee80211_ht_info) && |
| 425 | (!(ifsta->flags & IEEE80211_STA_TKIP_WEP_USED))) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 426 | struct ieee80211_ht_info *ht_info = |
| 427 | (struct ieee80211_ht_info *)(ht_ie + 2); |
| 428 | u16 cap = sband->ht_cap.cap; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 429 | __le16 tmp; |
| 430 | u32 flags = local->hw.conf.channel->flags; |
| 431 | |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 432 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
| 433 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 434 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 435 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 436 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 437 | } |
| 438 | break; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 439 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 440 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 441 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 442 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
| 443 | } |
| 444 | break; |
| 445 | } |
| 446 | |
| 447 | tmp = cpu_to_le16(cap); |
| 448 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
| 449 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 450 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 451 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
| 452 | memcpy(pos, &tmp, sizeof(u16)); |
| 453 | pos += sizeof(u16); |
| 454 | /* TODO: needs a define here for << 2 */ |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 455 | *pos++ = sband->ht_cap.ampdu_factor | |
| 456 | (sband->ht_cap.ampdu_density << 2); |
| 457 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 458 | } |
| 459 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 460 | add_extra_ies(skb, e_ies, e_ies_len); |
| 461 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 462 | kfree(ifsta->assocreq_ies); |
| 463 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; |
| 464 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
| 465 | if (ifsta->assocreq_ies) |
| 466 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); |
| 467 | |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 468 | ieee80211_tx_skb(sdata, skb, 0); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 472 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
| 473 | u16 stype, u16 reason) |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 474 | { |
| 475 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 476 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 477 | struct sk_buff *skb; |
| 478 | struct ieee80211_mgmt *mgmt; |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 479 | u8 *ies; |
| 480 | size_t ies_len; |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 481 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 482 | if (stype == IEEE80211_STYPE_DEAUTH) { |
| 483 | ies = sdata->u.sta.ie_deauth; |
| 484 | ies_len = sdata->u.sta.ie_deauth_len; |
| 485 | } else { |
| 486 | ies = sdata->u.sta.ie_disassoc; |
| 487 | ies_len = sdata->u.sta.ie_disassoc_len; |
| 488 | } |
| 489 | |
| 490 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + |
| 491 | ies_len); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 492 | if (!skb) { |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 493 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
| 494 | "deauth/disassoc frame\n", sdata->dev->name); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 495 | return; |
| 496 | } |
| 497 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 498 | |
| 499 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
| 500 | memset(mgmt, 0, 24); |
| 501 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); |
| 502 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 503 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 504 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 505 | skb_put(skb, 2); |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 506 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 507 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
| 508 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 509 | add_extra_ies(skb, ies, ies_len); |
| 510 | |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 511 | ieee80211_tx_skb(sdata, skb, ifsta->flags & IEEE80211_STA_MFP_ENABLED); |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 512 | } |
| 513 | |
Kalle Valo | 572e001 | 2009-02-10 17:09:31 +0200 | [diff] [blame] | 514 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
| 515 | struct ieee80211_sub_if_data *sdata) |
| 516 | { |
| 517 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 518 | struct ieee80211_pspoll *pspoll; |
| 519 | struct sk_buff *skb; |
| 520 | u16 fc; |
| 521 | |
| 522 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); |
| 523 | if (!skb) { |
| 524 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
| 525 | "pspoll frame\n", sdata->dev->name); |
| 526 | return; |
| 527 | } |
| 528 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 529 | |
| 530 | pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); |
| 531 | memset(pspoll, 0, sizeof(*pspoll)); |
| 532 | fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM; |
| 533 | pspoll->frame_control = cpu_to_le16(fc); |
| 534 | pspoll->aid = cpu_to_le16(ifsta->aid); |
| 535 | |
| 536 | /* aid in PS-Poll has its two MSBs each set to 1 */ |
| 537 | pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); |
| 538 | |
| 539 | memcpy(pspoll->bssid, ifsta->bssid, ETH_ALEN); |
| 540 | memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN); |
| 541 | |
| 542 | ieee80211_tx_skb(sdata, skb, 0); |
| 543 | |
| 544 | return; |
| 545 | } |
| 546 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 547 | /* MLME */ |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 548 | static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 549 | const size_t supp_rates_len, |
| 550 | const u8 *supp_rates) |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 551 | { |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 552 | struct ieee80211_local *local = sdata->local; |
| 553 | int i, have_higher_than_11mbit = 0; |
| 554 | |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 555 | /* cf. IEEE 802.11 9.2.12 */ |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 556 | for (i = 0; i < supp_rates_len; i++) |
| 557 | if ((supp_rates[i] & 0x7f) * 5 > 110) |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 558 | have_higher_than_11mbit = 1; |
| 559 | |
| 560 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 561 | have_higher_than_11mbit) |
| 562 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 563 | else |
| 564 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
| 565 | |
Johannes Berg | 3d35f7c | 2008-09-09 12:54:11 +0200 | [diff] [blame] | 566 | ieee80211_set_wmm_default(sdata); |
Vladimir Koutny | e2839d8 | 2008-03-18 21:14:07 +0100 | [diff] [blame] | 567 | } |
| 568 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 569 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 570 | struct ieee80211_if_sta *ifsta, |
| 571 | u8 *wmm_param, size_t wmm_param_len) |
| 572 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 573 | struct ieee80211_tx_queue_params params; |
| 574 | size_t left; |
| 575 | int count; |
| 576 | u8 *pos; |
| 577 | |
Johannes Berg | 3434fbd | 2008-05-03 00:59:37 +0200 | [diff] [blame] | 578 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
| 579 | return; |
| 580 | |
| 581 | if (!wmm_param) |
| 582 | return; |
| 583 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 584 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
| 585 | return; |
| 586 | count = wmm_param[6] & 0x0f; |
| 587 | if (count == ifsta->wmm_last_param_set) |
| 588 | return; |
| 589 | ifsta->wmm_last_param_set = count; |
| 590 | |
| 591 | pos = wmm_param + 8; |
| 592 | left = wmm_param_len - 8; |
| 593 | |
| 594 | memset(¶ms, 0, sizeof(params)); |
| 595 | |
| 596 | if (!local->ops->conf_tx) |
| 597 | return; |
| 598 | |
| 599 | local->wmm_acm = 0; |
| 600 | for (; left >= 4; left -= 4, pos += 4) { |
| 601 | int aci = (pos[0] >> 5) & 0x03; |
| 602 | int acm = (pos[0] >> 4) & 0x01; |
| 603 | int queue; |
| 604 | |
| 605 | switch (aci) { |
| 606 | case 1: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 607 | queue = 3; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 608 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 609 | local->wmm_acm |= BIT(0) | BIT(3); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 610 | break; |
| 611 | case 2: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 612 | queue = 1; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 613 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 614 | local->wmm_acm |= BIT(4) | BIT(5); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 615 | break; |
| 616 | case 3: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 617 | queue = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 618 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 619 | local->wmm_acm |= BIT(6) | BIT(7); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 620 | break; |
| 621 | case 0: |
| 622 | default: |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 623 | queue = 2; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 624 | if (acm) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 625 | local->wmm_acm |= BIT(1) | BIT(2); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 626 | break; |
| 627 | } |
| 628 | |
| 629 | params.aifs = pos[0] & 0x0f; |
| 630 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); |
| 631 | params.cw_min = ecw2cw(pos[1] & 0x0f); |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 632 | params.txop = get_unaligned_le16(pos + 2); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 633 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 634 | 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] | 635 | "cWmin=%d cWmax=%d txop=%d\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 636 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 637 | params.cw_max, params.txop); |
| 638 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 639 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
| 640 | * AC for now) */ |
| 641 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { |
| 642 | printk(KERN_DEBUG "%s: failed to set TX queue " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 643 | "parameters for queue %d\n", local->mdev->name, queue); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 644 | } |
| 645 | } |
| 646 | } |
| 647 | |
Kalle Valo | 1fb3606 | 2009-02-10 17:09:24 +0200 | [diff] [blame] | 648 | static bool ieee80211_check_tim(struct ieee802_11_elems *elems, u16 aid) |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 649 | { |
| 650 | u8 mask; |
| 651 | u8 index, indexn1, indexn2; |
| 652 | struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim; |
| 653 | |
| 654 | aid &= 0x3fff; |
| 655 | index = aid / 8; |
| 656 | mask = 1 << (aid & 7); |
| 657 | |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 658 | indexn1 = tim->bitmap_ctrl & 0xfe; |
| 659 | indexn2 = elems->tim_len + indexn1 - 4; |
| 660 | |
| 661 | if (index < indexn1 || index > indexn2) |
| 662 | return false; |
| 663 | |
| 664 | index -= indexn1; |
| 665 | |
| 666 | return !!(tim->virtual_map[index] & mask); |
| 667 | } |
| 668 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 669 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
| 670 | u16 capab, bool erp_valid, u8 erp) |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 671 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 672 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 673 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 674 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Tomas Winkler | ebd7448 | 2008-07-01 10:44:50 +0300 | [diff] [blame] | 675 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 676 | u32 changed = 0; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 677 | bool use_protection; |
| 678 | bool use_short_preamble; |
| 679 | bool use_short_slot; |
| 680 | |
| 681 | if (erp_valid) { |
| 682 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; |
| 683 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; |
| 684 | } else { |
| 685 | use_protection = false; |
| 686 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); |
| 687 | } |
| 688 | |
| 689 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 690 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 691 | if (use_protection != bss_conf->use_cts_prot) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 692 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 693 | if (net_ratelimit()) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 694 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 695 | sdata->dev->name, |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 696 | use_protection ? "enabled" : "disabled", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 697 | ifsta->bssid); |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 698 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 699 | #endif |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 700 | bss_conf->use_cts_prot = use_protection; |
| 701 | changed |= BSS_CHANGED_ERP_CTS_PROT; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 702 | } |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 703 | |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 704 | if (use_short_preamble != bss_conf->use_short_preamble) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 705 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 706 | if (net_ratelimit()) { |
| 707 | printk(KERN_DEBUG "%s: switched to %s barker preamble" |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 708 | " (BSSID=%pM)\n", |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 709 | sdata->dev->name, |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 710 | use_short_preamble ? "short" : "long", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 711 | ifsta->bssid); |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 712 | } |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 713 | #endif |
Vladimir Koutny | d43c7b3 | 2008-03-31 17:05:03 +0200 | [diff] [blame] | 714 | bss_conf->use_short_preamble = use_short_preamble; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 715 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
Daniel Drake | 7e9ed18 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 716 | } |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 717 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 718 | if (use_short_slot != bss_conf->use_short_slot) { |
| 719 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 720 | if (net_ratelimit()) { |
Christian Lamparter | 391429c | 2009-01-18 02:24:15 +0100 | [diff] [blame] | 721 | printk(KERN_DEBUG "%s: switched to %s slot time" |
| 722 | " (BSSID=%pM)\n", |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 723 | sdata->dev->name, |
| 724 | use_short_slot ? "short" : "long", |
| 725 | ifsta->bssid); |
| 726 | } |
| 727 | #endif |
| 728 | bss_conf->use_short_slot = use_short_slot; |
| 729 | changed |= BSS_CHANGED_ERP_SLOT; |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | return changed; |
| 733 | } |
| 734 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 735 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, |
| 736 | struct ieee80211_if_sta *ifsta) |
| 737 | { |
| 738 | union iwreq_data wrqu; |
| 739 | memset(&wrqu, 0, sizeof(wrqu)); |
| 740 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
| 741 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); |
| 742 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 743 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
| 744 | } |
| 745 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 746 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 747 | struct ieee80211_if_sta *ifsta) |
| 748 | { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 749 | char *buf; |
| 750 | size_t len; |
| 751 | int i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 752 | union iwreq_data wrqu; |
| 753 | |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 754 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) |
| 755 | return; |
| 756 | |
| 757 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + |
| 758 | ifsta->assocresp_ies_len), GFP_KERNEL); |
| 759 | if (!buf) |
| 760 | return; |
| 761 | |
| 762 | len = sprintf(buf, "ASSOCINFO("); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 763 | if (ifsta->assocreq_ies) { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 764 | len += sprintf(buf + len, "ReqIEs="); |
| 765 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { |
| 766 | len += sprintf(buf + len, "%02x", |
| 767 | ifsta->assocreq_ies[i]); |
| 768 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 769 | } |
| 770 | if (ifsta->assocresp_ies) { |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 771 | if (ifsta->assocreq_ies) |
| 772 | len += sprintf(buf + len, " "); |
| 773 | len += sprintf(buf + len, "RespIEs="); |
| 774 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { |
| 775 | len += sprintf(buf + len, "%02x", |
| 776 | ifsta->assocresp_ies[i]); |
| 777 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 778 | } |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 779 | len += sprintf(buf + len, ")"); |
| 780 | |
| 781 | if (len > IW_CUSTOM_MAX) { |
| 782 | len = sprintf(buf, "ASSOCRESPIE="); |
| 783 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { |
| 784 | len += sprintf(buf + len, "%02x", |
| 785 | ifsta->assocresp_ies[i]); |
| 786 | } |
| 787 | } |
| 788 | |
John W. Linville | ad788b5 | 2008-10-01 15:45:02 -0400 | [diff] [blame] | 789 | if (len <= IW_CUSTOM_MAX) { |
| 790 | memset(&wrqu, 0, sizeof(wrqu)); |
| 791 | wrqu.data.length = len; |
| 792 | wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf); |
| 793 | } |
Linus Torvalds | 74af025 | 2008-09-05 12:38:09 -0700 | [diff] [blame] | 794 | |
| 795 | kfree(buf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 799 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 800 | struct ieee80211_if_sta *ifsta, |
| 801 | u32 bss_info_changed) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 802 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 803 | struct ieee80211_local *local = sdata->local; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 804 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 805 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 806 | struct ieee80211_bss *bss; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 807 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 808 | bss_info_changed |= BSS_CHANGED_ASSOC; |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 809 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 810 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 811 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
| 812 | conf->channel->center_freq, |
| 813 | ifsta->ssid, ifsta->ssid_len); |
| 814 | if (bss) { |
| 815 | /* set timing information */ |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 816 | sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval; |
| 817 | sdata->vif.bss_conf.timestamp = bss->cbss.tsf; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 818 | sdata->vif.bss_conf.dtim_period = bss->dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 819 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 820 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 821 | bss->cbss.capability, bss->has_erp_value, bss->erp_value); |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 822 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 823 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 824 | } |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 825 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 826 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
| 827 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
| 828 | ieee80211_sta_send_associnfo(sdata, ifsta); |
| 829 | |
| 830 | ifsta->last_probe = jiffies; |
| 831 | ieee80211_led_assoc(local, 1); |
| 832 | |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 833 | sdata->vif.bss_conf.assoc = 1; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 834 | /* |
| 835 | * For now just always ask the driver to update the basic rateset |
| 836 | * when we have associated, we aren't checking whether it actually |
| 837 | * changed or not. |
| 838 | */ |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 839 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
| 840 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 841 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 842 | if (local->powersave) { |
| 843 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) && |
| 844 | local->hw.conf.dynamic_ps_timeout > 0) { |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 845 | mod_timer(&local->dynamic_ps_timer, jiffies + |
Johannes Berg | 46f2c4b | 2009-01-06 18:13:18 +0100 | [diff] [blame] | 846 | msecs_to_jiffies( |
| 847 | local->hw.conf.dynamic_ps_timeout)); |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 848 | } else { |
| 849 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
| 850 | ieee80211_send_nullfunc(local, sdata, 1); |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 851 | conf->flags |= IEEE80211_CONF_PS; |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 852 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 853 | } |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 854 | } |
| 855 | |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 856 | netif_tx_start_all_queues(sdata->dev); |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 857 | netif_carrier_on(sdata->dev); |
Guy Cohen | 8db9369 | 2008-07-03 19:56:13 +0300 | [diff] [blame] | 858 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 859 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 860 | } |
| 861 | |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 862 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
| 863 | struct ieee80211_if_sta *ifsta) |
| 864 | { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 865 | ifsta->direct_probe_tries++; |
| 866 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 867 | printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", |
| 868 | sdata->dev->name, ifsta->bssid); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 869 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 870 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 871 | |
| 872 | /* |
| 873 | * Most likely AP is not in the range so remove the |
| 874 | * bss information associated to the AP |
| 875 | */ |
| 876 | ieee80211_rx_bss_remove(sdata, ifsta->bssid, |
| 877 | sdata->local->hw.conf.channel->center_freq, |
| 878 | ifsta->ssid, ifsta->ssid_len); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 879 | return; |
| 880 | } |
| 881 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 882 | printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", |
| 883 | sdata->dev->name, ifsta->bssid, |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 884 | ifsta->direct_probe_tries); |
| 885 | |
| 886 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 887 | |
| 888 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
| 889 | |
| 890 | /* Direct probe is sent to broadcast address as some APs |
| 891 | * will not answer to direct packet in unassociated state. |
| 892 | */ |
| 893 | ieee80211_send_probe_req(sdata, NULL, |
| 894 | ifsta->ssid, ifsta->ssid_len); |
| 895 | |
| 896 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 897 | } |
| 898 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 899 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 900 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 901 | struct ieee80211_if_sta *ifsta) |
| 902 | { |
| 903 | ifsta->auth_tries++; |
| 904 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 905 | printk(KERN_DEBUG "%s: authentication with AP %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 906 | " timed out\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 907 | sdata->dev->name, ifsta->bssid); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 908 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 909 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 910 | ieee80211_rx_bss_remove(sdata, ifsta->bssid, |
| 911 | sdata->local->hw.conf.channel->center_freq, |
| 912 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 913 | return; |
| 914 | } |
| 915 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 916 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 917 | printk(KERN_DEBUG "%s: authenticate with AP %pM\n", |
| 918 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 919 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 920 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 921 | |
| 922 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
| 923 | } |
| 924 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 925 | /* |
| 926 | * The disassoc 'reason' argument can be either our own reason |
| 927 | * if self disconnected or a reason code from the AP. |
| 928 | */ |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 929 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
| 930 | struct ieee80211_if_sta *ifsta, bool deauth, |
| 931 | bool self_disconnected, u16 reason) |
| 932 | { |
| 933 | struct ieee80211_local *local = sdata->local; |
| 934 | struct sta_info *sta; |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 935 | u32 changed = 0, config_changed = 0; |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 936 | |
| 937 | rcu_read_lock(); |
| 938 | |
| 939 | sta = sta_info_get(local, ifsta->bssid); |
| 940 | if (!sta) { |
| 941 | rcu_read_unlock(); |
| 942 | return; |
| 943 | } |
| 944 | |
| 945 | if (deauth) { |
| 946 | ifsta->direct_probe_tries = 0; |
| 947 | ifsta->auth_tries = 0; |
| 948 | } |
| 949 | ifsta->assoc_scan_tries = 0; |
| 950 | ifsta->assoc_tries = 0; |
| 951 | |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 952 | netif_tx_stop_all_queues(sdata->dev); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 953 | netif_carrier_off(sdata->dev); |
| 954 | |
Johannes Berg | 2dace10 | 2009-02-10 21:25:52 +0100 | [diff] [blame] | 955 | ieee80211_sta_tear_down_BA_sessions(sta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 956 | |
| 957 | if (self_disconnected) { |
| 958 | if (deauth) |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 959 | ieee80211_send_deauth_disassoc(sdata, |
| 960 | IEEE80211_STYPE_DEAUTH, reason); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 961 | else |
Johannes Berg | ef422bc | 2008-09-09 10:58:25 +0200 | [diff] [blame] | 962 | ieee80211_send_deauth_disassoc(sdata, |
| 963 | IEEE80211_STYPE_DISASSOC, reason); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 964 | } |
| 965 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 966 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
| 967 | changed |= ieee80211_reset_erp_info(sdata); |
| 968 | |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 969 | ieee80211_led_assoc(local, 0); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 970 | changed |= BSS_CHANGED_ASSOC; |
| 971 | sdata->vif.bss_conf.assoc = false; |
Tomas Winkler | f5e5bf2 | 2008-09-08 17:33:39 +0200 | [diff] [blame] | 972 | |
| 973 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 974 | |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 975 | if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) { |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 976 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 977 | ieee80211_rx_bss_remove(sdata, ifsta->bssid, |
| 978 | sdata->local->hw.conf.channel->center_freq, |
| 979 | ifsta->ssid, ifsta->ssid_len); |
| 980 | } |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 981 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 982 | rcu_read_unlock(); |
| 983 | |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 984 | /* channel(_type) changes are handled by ieee80211_hw_config */ |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 985 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 986 | |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 987 | local->power_constr_level = 0; |
| 988 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 989 | del_timer_sync(&local->dynamic_ps_timer); |
| 990 | cancel_work_sync(&local->dynamic_ps_enable_work); |
| 991 | |
Kalle Valo | e0cb686 | 2008-12-18 23:35:13 +0200 | [diff] [blame] | 992 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
| 993 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 994 | config_changed |= IEEE80211_CONF_CHANGE_PS; |
| 995 | } |
| 996 | |
| 997 | ieee80211_hw_config(local, config_changed); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 998 | ieee80211_bss_info_change_notify(sdata, changed); |
Tomas Winkler | 8e268e4 | 2008-11-25 13:05:44 +0200 | [diff] [blame] | 999 | |
| 1000 | rcu_read_lock(); |
| 1001 | |
| 1002 | sta = sta_info_get(local, ifsta->bssid); |
| 1003 | if (!sta) { |
| 1004 | rcu_read_unlock(); |
| 1005 | return; |
| 1006 | } |
| 1007 | |
| 1008 | sta_info_unlink(&sta); |
| 1009 | |
| 1010 | rcu_read_unlock(); |
| 1011 | |
| 1012 | sta_info_destroy(sta); |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1013 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1014 | |
Johannes Berg | 9ac19a9 | 2008-09-09 10:57:09 +0200 | [diff] [blame] | 1015 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
| 1016 | { |
| 1017 | if (!sdata || !sdata->default_key || |
| 1018 | sdata->default_key->conf.alg != ALG_WEP) |
| 1019 | return 0; |
| 1020 | return 1; |
| 1021 | } |
| 1022 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1023 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1024 | struct ieee80211_if_sta *ifsta) |
| 1025 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1026 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1027 | struct ieee80211_bss *bss; |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 1028 | int bss_privacy; |
| 1029 | int wep_privacy; |
| 1030 | int privacy_invoked; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1031 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 1032 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1033 | return 0; |
| 1034 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1035 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1036 | local->hw.conf.channel->center_freq, |
John W. Linville | cffdd30 | 2007-10-05 14:23:27 -0400 | [diff] [blame] | 1037 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1038 | if (!bss) |
| 1039 | return 0; |
| 1040 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 1041 | bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1042 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 1043 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1044 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1045 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1046 | |
Johannes Berg | 5b98b1f | 2007-11-03 13:11:10 +0000 | [diff] [blame] | 1047 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
| 1048 | return 0; |
| 1049 | |
| 1050 | return 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1051 | } |
| 1052 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1053 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1054 | struct ieee80211_if_sta *ifsta) |
| 1055 | { |
| 1056 | ifsta->assoc_tries++; |
| 1057 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1058 | printk(KERN_DEBUG "%s: association with AP %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1059 | " timed out\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1060 | sdata->dev->name, ifsta->bssid); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1061 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Johannes Berg | 4a68ec5 | 2008-10-16 21:44:44 +0200 | [diff] [blame] | 1062 | ieee80211_sta_send_apinfo(sdata, ifsta); |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 1063 | ieee80211_rx_bss_remove(sdata, ifsta->bssid, |
| 1064 | sdata->local->hw.conf.channel->center_freq, |
| 1065 | ifsta->ssid, ifsta->ssid_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1066 | return; |
| 1067 | } |
| 1068 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1069 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1070 | printk(KERN_DEBUG "%s: associate with AP %pM\n", |
| 1071 | sdata->dev->name, ifsta->bssid); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1072 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1073 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1074 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1075 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1076 | return; |
| 1077 | } |
| 1078 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1079 | ieee80211_send_assoc(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1080 | |
| 1081 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
| 1082 | } |
| 1083 | |
| 1084 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1085 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1086 | struct ieee80211_if_sta *ifsta) |
| 1087 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1088 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1089 | struct sta_info *sta; |
| 1090 | int disassoc; |
| 1091 | |
| 1092 | /* TODO: start monitoring current AP signal quality and number of |
| 1093 | * missed beacons. Scan other channels every now and then and search |
| 1094 | * for better APs. */ |
| 1095 | /* TODO: remove expired BSSes */ |
| 1096 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1097 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1098 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1099 | rcu_read_lock(); |
| 1100 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1101 | sta = sta_info_get(local, ifsta->bssid); |
| 1102 | if (!sta) { |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1103 | printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", |
| 1104 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1105 | disassoc = 1; |
| 1106 | } else { |
| 1107 | disassoc = 0; |
| 1108 | if (time_after(jiffies, |
| 1109 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1110 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1111 | printk(KERN_DEBUG "%s: No ProbeResp from " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1112 | "current AP %pM - assume out of " |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1113 | "range\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1114 | sdata->dev->name, ifsta->bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1115 | disassoc = 1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1116 | } else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1117 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Johannes Berg | 4dfe51e | 2008-09-19 05:10:34 +0200 | [diff] [blame] | 1118 | ifsta->ssid, |
| 1119 | ifsta->ssid_len); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1120 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1121 | } else { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1122 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1123 | if (time_after(jiffies, ifsta->last_probe + |
| 1124 | IEEE80211_PROBE_INTERVAL)) { |
| 1125 | ifsta->last_probe = jiffies; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1126 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1127 | ifsta->ssid, |
| 1128 | ifsta->ssid_len); |
| 1129 | } |
| 1130 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1131 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1132 | |
| 1133 | rcu_read_unlock(); |
| 1134 | |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 1135 | if (disassoc) |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1136 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 1137 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
Vasanthakumar Thiagarajan | 7a94708 | 2009-02-04 18:28:48 +0530 | [diff] [blame] | 1138 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1139 | mod_timer(&ifsta->timer, jiffies + |
| 1140 | IEEE80211_MONITORING_INTERVAL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1144 | static void ieee80211_auth_completed(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 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1147 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1148 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1149 | ieee80211_associate(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1150 | } |
| 1151 | |
| 1152 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1153 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1154 | struct ieee80211_if_sta *ifsta, |
| 1155 | struct ieee80211_mgmt *mgmt, |
| 1156 | size_t len) |
| 1157 | { |
| 1158 | u8 *pos; |
| 1159 | struct ieee802_11_elems elems; |
| 1160 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1161 | pos = mgmt->u.auth.variable; |
John W. Linville | 67a4cce | 2007-10-12 16:40:37 -0400 | [diff] [blame] | 1162 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1163 | if (!elems.challenge) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1164 | return; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1165 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1166 | elems.challenge_len + 2, 1); |
| 1167 | } |
| 1168 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1169 | static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, |
| 1170 | struct ieee80211_if_sta *ifsta, |
| 1171 | struct ieee80211_mgmt *mgmt, |
| 1172 | size_t len) |
| 1173 | { |
| 1174 | u16 auth_alg, auth_transaction, status_code; |
| 1175 | |
| 1176 | if (len < 24 + 6) |
| 1177 | return; |
| 1178 | |
| 1179 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); |
| 1180 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); |
| 1181 | status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 1182 | |
| 1183 | /* |
| 1184 | * IEEE 802.11 standard does not require authentication in IBSS |
| 1185 | * networks and most implementations do not seem to use it. |
| 1186 | * However, try to reply to authentication attempts if someone |
| 1187 | * has actually implemented this. |
| 1188 | */ |
| 1189 | if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) |
| 1190 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
| 1191 | } |
| 1192 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1193 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1194 | struct ieee80211_if_sta *ifsta, |
| 1195 | struct ieee80211_mgmt *mgmt, |
| 1196 | size_t len) |
| 1197 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1198 | u16 auth_alg, auth_transaction, status_code; |
| 1199 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1200 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1201 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1202 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1203 | if (len < 24 + 6) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1204 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1205 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1206 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1207 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1208 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1209 | if (memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1210 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1211 | |
| 1212 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); |
| 1213 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); |
| 1214 | status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 1215 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1216 | if (auth_alg != ifsta->auth_alg || |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1217 | auth_transaction != ifsta->auth_transaction) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1218 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1219 | |
| 1220 | if (status_code != WLAN_STATUS_SUCCESS) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1221 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
| 1222 | u8 algs[3]; |
| 1223 | const int num_algs = ARRAY_SIZE(algs); |
| 1224 | int i, pos; |
| 1225 | algs[0] = algs[1] = algs[2] = 0xff; |
| 1226 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 1227 | algs[0] = WLAN_AUTH_OPEN; |
| 1228 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 1229 | algs[1] = WLAN_AUTH_SHARED_KEY; |
| 1230 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 1231 | algs[2] = WLAN_AUTH_LEAP; |
| 1232 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) |
| 1233 | pos = 0; |
| 1234 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) |
| 1235 | pos = 1; |
| 1236 | else |
| 1237 | pos = 2; |
| 1238 | for (i = 0; i < num_algs; i++) { |
| 1239 | pos++; |
| 1240 | if (pos >= num_algs) |
| 1241 | pos = 0; |
| 1242 | if (algs[pos] == ifsta->auth_alg || |
| 1243 | algs[pos] == 0xff) |
| 1244 | continue; |
| 1245 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1246 | !ieee80211_sta_wep_configured(sdata)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1247 | continue; |
| 1248 | ifsta->auth_alg = algs[pos]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1249 | break; |
| 1250 | } |
| 1251 | } |
| 1252 | return; |
| 1253 | } |
| 1254 | |
| 1255 | switch (ifsta->auth_alg) { |
| 1256 | case WLAN_AUTH_OPEN: |
| 1257 | case WLAN_AUTH_LEAP: |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1258 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1259 | break; |
| 1260 | case WLAN_AUTH_SHARED_KEY: |
| 1261 | if (ifsta->auth_transaction == 4) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1262 | ieee80211_auth_completed(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1263 | else |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1264 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1265 | break; |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1270 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1271 | struct ieee80211_if_sta *ifsta, |
| 1272 | struct ieee80211_mgmt *mgmt, |
| 1273 | size_t len) |
| 1274 | { |
| 1275 | u16 reason_code; |
| 1276 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1277 | if (len < 24 + 2) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1278 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1279 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1280 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1281 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1282 | |
| 1283 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
| 1284 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 1285 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
Zhu Yi | 97c8b01 | 2008-10-28 15:58:31 +0800 | [diff] [blame] | 1286 | printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", |
| 1287 | sdata->dev->name, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1288 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1289 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
| 1290 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || |
| 1291 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1292 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1293 | mod_timer(&ifsta->timer, jiffies + |
| 1294 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1295 | } |
| 1296 | |
Tomas Winkler | aa458d1 | 2008-09-09 00:32:12 +0300 | [diff] [blame] | 1297 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1298 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1299 | } |
| 1300 | |
| 1301 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1302 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1303 | struct ieee80211_if_sta *ifsta, |
| 1304 | struct ieee80211_mgmt *mgmt, |
| 1305 | size_t len) |
| 1306 | { |
| 1307 | u16 reason_code; |
| 1308 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1309 | if (len < 24 + 2) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1310 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1311 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1312 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1313 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1314 | |
| 1315 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
| 1316 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1317 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
Zhu Yi | 97c8b01 | 2008-10-28 15:58:31 +0800 | [diff] [blame] | 1318 | printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", |
| 1319 | sdata->dev->name, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1320 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1321 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
| 1322 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1323 | mod_timer(&ifsta->timer, jiffies + |
| 1324 | IEEE80211_RETRY_AUTH_INTERVAL); |
| 1325 | } |
| 1326 | |
Vivek Natarajan | 5925d97 | 2008-11-21 22:19:50 -0800 | [diff] [blame] | 1327 | ieee80211_set_disassoc(sdata, ifsta, false, false, reason_code); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1328 | } |
| 1329 | |
| 1330 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1331 | 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] | 1332 | struct ieee80211_if_sta *ifsta, |
| 1333 | struct ieee80211_mgmt *mgmt, |
| 1334 | size_t len, |
| 1335 | int reassoc) |
| 1336 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1337 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1338 | struct ieee80211_supported_band *sband; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1339 | struct sta_info *sta; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 1340 | u32 rates, basic_rates; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1341 | u16 capab_info, status_code, aid; |
| 1342 | struct ieee802_11_elems elems; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 1343 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1344 | u8 *pos; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1345 | u32 changed = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1346 | int i, j; |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1347 | bool have_higher_than_11mbit = false, newsta = false; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1348 | u16 ap_ht_cap_flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1349 | |
| 1350 | /* AssocResp and ReassocResp have identical structure, so process both |
| 1351 | * of them in this function. */ |
| 1352 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1353 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1354 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1355 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1356 | if (len < 24 + 6) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1357 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1358 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1359 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1360 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1361 | |
| 1362 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
| 1363 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
| 1364 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1365 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1366 | printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1367 | "status=%d aid=%d)\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1368 | sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, |
Johannes Berg | ddd6858 | 2007-10-22 14:51:37 +0200 | [diff] [blame] | 1369 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1370 | |
Jouni Malinen | 63a5ab8 | 2009-01-08 13:32:09 +0200 | [diff] [blame] | 1371 | pos = mgmt->u.assoc_resp.variable; |
| 1372 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
| 1373 | |
| 1374 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && |
Jouni Malinen | f797eb7 | 2009-01-19 18:48:46 +0200 | [diff] [blame] | 1375 | elems.timeout_int && elems.timeout_int_len == 5 && |
| 1376 | elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { |
Jouni Malinen | 63a5ab8 | 2009-01-08 13:32:09 +0200 | [diff] [blame] | 1377 | u32 tu, ms; |
Jouni Malinen | f797eb7 | 2009-01-19 18:48:46 +0200 | [diff] [blame] | 1378 | tu = get_unaligned_le32(elems.timeout_int + 1); |
Jouni Malinen | 63a5ab8 | 2009-01-08 13:32:09 +0200 | [diff] [blame] | 1379 | ms = tu * 1024 / 1000; |
| 1380 | printk(KERN_DEBUG "%s: AP rejected association temporarily; " |
| 1381 | "comeback duration %u TU (%u ms)\n", |
| 1382 | sdata->dev->name, tu, ms); |
| 1383 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
| 1384 | mod_timer(&ifsta->timer, |
| 1385 | jiffies + msecs_to_jiffies(ms)); |
| 1386 | return; |
| 1387 | } |
| 1388 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1389 | if (status_code != WLAN_STATUS_SUCCESS) { |
| 1390 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1391 | sdata->dev->name, status_code); |
Daniel Drake | 8a69aa9 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 1392 | /* if this was a reassociation, ensure we try a "full" |
| 1393 | * association next time. This works around some broken APs |
| 1394 | * which do not correctly reject reassociation requests. */ |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1395 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1396 | return; |
| 1397 | } |
| 1398 | |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1399 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
| 1400 | 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] | 1401 | "set\n", sdata->dev->name, aid); |
Johannes Berg | 1dd84aa | 2007-10-10 12:03:41 +0200 | [diff] [blame] | 1402 | aid &= ~(BIT(15) | BIT(14)); |
| 1403 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1404 | if (!elems.supp_rates) { |
| 1405 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1406 | sdata->dev->name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1407 | return; |
| 1408 | } |
| 1409 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1410 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1411 | ifsta->aid = aid; |
| 1412 | ifsta->ap_capab = capab_info; |
| 1413 | |
| 1414 | kfree(ifsta->assocresp_ies); |
| 1415 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 1416 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1417 | if (ifsta->assocresp_ies) |
| 1418 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); |
| 1419 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1420 | rcu_read_lock(); |
| 1421 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1422 | /* Add STA entry for the AP */ |
| 1423 | sta = sta_info_get(local, ifsta->bssid); |
| 1424 | if (!sta) { |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1425 | newsta = true; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1426 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1427 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
| 1428 | if (!sta) { |
| 1429 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1430 | " the AP\n", sdata->dev->name); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1431 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1432 | return; |
| 1433 | } |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1434 | |
Ron Rindjunsky | a61dae1 | 2008-08-10 00:54:34 +0300 | [diff] [blame] | 1435 | /* update new sta with its last rx activity */ |
| 1436 | sta->last_rx = jiffies; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1437 | } |
| 1438 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 1439 | /* |
| 1440 | * FIXME: Do we really need to update the sta_info's information here? |
| 1441 | * We already know about the AP (we found it in our list) so it |
| 1442 | * should already be filled with the right info, no? |
| 1443 | * As is stands, all this is racy because typically we assume |
| 1444 | * the information that is filled in here (except flags) doesn't |
| 1445 | * change while a STA structure is alive. As such, it should move |
| 1446 | * to between the sta_info_alloc() and sta_info_insert() above. |
| 1447 | */ |
| 1448 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1449 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
| 1450 | WLAN_STA_AUTHORIZED); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1451 | |
| 1452 | rates = 0; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1453 | basic_rates = 0; |
| 1454 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1455 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1456 | for (i = 0; i < elems.supp_rates_len; i++) { |
| 1457 | int rate = (elems.supp_rates[i] & 0x7f) * 5; |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1458 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1459 | |
| 1460 | if (rate > 110) |
| 1461 | have_higher_than_11mbit = true; |
| 1462 | |
| 1463 | for (j = 0; j < sband->n_bitrates; j++) { |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1464 | if (sband->bitrates[j].bitrate == rate) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1465 | rates |= BIT(j); |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1466 | if (is_basic) |
| 1467 | basic_rates |= BIT(j); |
| 1468 | break; |
| 1469 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1470 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1471 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1472 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1473 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
| 1474 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1475 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1476 | |
| 1477 | if (rate > 110) |
| 1478 | have_higher_than_11mbit = true; |
| 1479 | |
| 1480 | for (j = 0; j < sband->n_bitrates; j++) { |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1481 | if (sband->bitrates[j].bitrate == rate) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1482 | rates |= BIT(j); |
Tomas Winkler | d61272c | 2008-10-30 17:08:08 +0200 | [diff] [blame] | 1483 | if (is_basic) |
| 1484 | basic_rates |= BIT(j); |
| 1485 | break; |
| 1486 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1487 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1488 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1489 | |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1490 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 1491 | sdata->vif.bss_conf.basic_rates = basic_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1492 | |
| 1493 | /* cf. IEEE 802.11 9.2.12 */ |
| 1494 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && |
| 1495 | have_higher_than_11mbit) |
| 1496 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; |
| 1497 | else |
| 1498 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1499 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1500 | if (elems.ht_cap_elem) |
| 1501 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 1502 | elems.ht_cap_elem, &sta->sta.ht_cap); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1503 | |
| 1504 | ap_ht_cap_flags = sta->sta.ht_cap.cap; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1505 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1506 | rate_control_rate_init(sta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1507 | |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 1508 | if (ifsta->flags & IEEE80211_STA_MFP_ENABLED) |
| 1509 | set_sta_flags(sta, WLAN_STA_MFP); |
| 1510 | |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1511 | if (elems.wmm_param) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1512 | set_sta_flags(sta, WLAN_STA_WME); |
Johannes Berg | ddf4ac5 | 2008-10-22 11:41:38 +0200 | [diff] [blame] | 1513 | |
| 1514 | if (newsta) { |
| 1515 | int err = sta_info_insert(sta); |
| 1516 | if (err) { |
| 1517 | printk(KERN_DEBUG "%s: failed to insert STA entry for" |
| 1518 | " the AP (error %d)\n", sdata->dev->name, err); |
| 1519 | rcu_read_unlock(); |
| 1520 | return; |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | rcu_read_unlock(); |
| 1525 | |
| 1526 | if (elems.wmm_param) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1527 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1528 | elems.wmm_param_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1529 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1530 | if (elems.ht_info_elem && elems.wmm_param && |
Vasanthakumar Thiagarajan | 53d6f81c | 2009-02-11 22:18:49 +0530 | [diff] [blame^] | 1531 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
| 1532 | !(ifsta->flags & IEEE80211_STA_TKIP_WEP_USED)) |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1533 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
| 1534 | ap_ht_cap_flags); |
| 1535 | |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 1536 | /* set AID and assoc capability, |
| 1537 | * ieee80211_set_associated() will tell the driver */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1538 | bss_conf->aid = aid; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 1539 | bss_conf->assoc_capability = capab_info; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1540 | ieee80211_set_associated(sdata, ifsta, changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1541 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1542 | ieee80211_associated(sdata, ifsta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1543 | } |
| 1544 | |
| 1545 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1546 | static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
| 1547 | struct ieee80211_if_sta *ifsta, |
| 1548 | const u8 *bssid, const int beacon_int, |
| 1549 | const int freq, |
| 1550 | const size_t supp_rates_len, |
| 1551 | const u8 *supp_rates, |
| 1552 | const u16 capability) |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1553 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1554 | struct ieee80211_local *local = sdata->local; |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1555 | int res = 0, rates, i, j; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1556 | struct sk_buff *skb; |
| 1557 | struct ieee80211_mgmt *mgmt; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1558 | u8 *pos; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1559 | struct ieee80211_supported_band *sband; |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 1560 | union iwreq_data wrqu; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1561 | |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1562 | if (local->ops->reset_tsf) { |
| 1563 | /* Reset own TSF to allow time synchronization work. */ |
| 1564 | local->ops->reset_tsf(local_to_hw(local)); |
| 1565 | } |
| 1566 | |
| 1567 | if ((ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) && |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1568 | memcmp(ifsta->bssid, bssid, ETH_ALEN) == 0) |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1569 | return res; |
| 1570 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 1571 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 + |
| 1572 | sdata->u.sta.ie_proberesp_len); |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1573 | if (!skb) { |
| 1574 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " |
| 1575 | "response\n", sdata->dev->name); |
| 1576 | return -ENOMEM; |
| 1577 | } |
| 1578 | |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1579 | if (!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) { |
| 1580 | /* Remove possible STA entries from other IBSS networks. */ |
| 1581 | sta_info_flush_delayed(sdata); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1582 | } |
Alina Friedrichsen | c4e3a58 | 2009-01-29 13:56:20 +0100 | [diff] [blame] | 1583 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1584 | memcpy(ifsta->bssid, bssid, ETH_ALEN); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1585 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1586 | if (res) |
| 1587 | return res; |
| 1588 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1589 | local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1590 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1591 | sdata->drop_unencrypted = capability & |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1592 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; |
| 1593 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1594 | res = ieee80211_set_freq(sdata, freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1595 | |
Assaf Krauss | be038b3 | 2008-06-05 19:55:21 +0300 | [diff] [blame] | 1596 | if (res) |
| 1597 | return res; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1598 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1599 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1600 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1601 | /* Build IBSS probe response */ |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1602 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1603 | skb_reserve(skb, local->hw.extra_tx_headroom); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1604 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1605 | mgmt = (struct ieee80211_mgmt *) |
| 1606 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); |
| 1607 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); |
| 1608 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1609 | IEEE80211_STYPE_PROBE_RESP); |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1610 | memset(mgmt->da, 0xff, ETH_ALEN); |
| 1611 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
| 1612 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
| 1613 | mgmt->u.beacon.beacon_int = |
| 1614 | cpu_to_le16(local->hw.conf.beacon_int); |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1615 | mgmt->u.beacon.capab_info = cpu_to_le16(capability); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1616 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1617 | pos = skb_put(skb, 2 + ifsta->ssid_len); |
| 1618 | *pos++ = WLAN_EID_SSID; |
| 1619 | *pos++ = ifsta->ssid_len; |
| 1620 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1621 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1622 | rates = supp_rates_len; |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1623 | if (rates > 8) |
| 1624 | rates = 8; |
| 1625 | pos = skb_put(skb, 2 + rates); |
| 1626 | *pos++ = WLAN_EID_SUPP_RATES; |
| 1627 | *pos++ = rates; |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1628 | memcpy(pos, supp_rates, rates); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1629 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1630 | if (sband->band == IEEE80211_BAND_2GHZ) { |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1631 | pos = skb_put(skb, 2 + 1); |
| 1632 | *pos++ = WLAN_EID_DS_PARAMS; |
| 1633 | *pos++ = 1; |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1634 | *pos++ = ieee80211_frequency_to_channel(freq); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1635 | } |
| 1636 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1637 | pos = skb_put(skb, 2 + 2); |
| 1638 | *pos++ = WLAN_EID_IBSS_PARAMS; |
| 1639 | *pos++ = 2; |
| 1640 | /* FIX: set ATIM window based on scan results */ |
| 1641 | *pos++ = 0; |
| 1642 | *pos++ = 0; |
| 1643 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1644 | if (supp_rates_len > 8) { |
| 1645 | rates = supp_rates_len - 8; |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1646 | pos = skb_put(skb, 2 + rates); |
| 1647 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| 1648 | *pos++ = rates; |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1649 | memcpy(pos, &supp_rates[8], rates); |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1650 | } |
| 1651 | |
Jouni Malinen | 9aed3cc | 2009-01-13 16:03:29 +0200 | [diff] [blame] | 1652 | add_extra_ies(skb, sdata->u.sta.ie_proberesp, |
| 1653 | sdata->u.sta.ie_proberesp_len); |
| 1654 | |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1655 | ifsta->probe_resp = skb; |
| 1656 | |
Johannes Berg | 078e1e6 | 2009-01-22 18:07:31 +0100 | [diff] [blame] | 1657 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON | |
| 1658 | IEEE80211_IFCC_BEACON_ENABLED); |
Rami Rosen | e2ef12d | 2008-10-22 09:58:39 +0200 | [diff] [blame] | 1659 | |
| 1660 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1661 | rates = 0; |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1662 | for (i = 0; i < supp_rates_len; i++) { |
| 1663 | int bitrate = (supp_rates[i] & 0x7f) * 5; |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1664 | for (j = 0; j < sband->n_bitrates; j++) |
| 1665 | if (sband->bitrates[j].bitrate == bitrate) |
| 1666 | rates |= BIT(j); |
| 1667 | } |
| 1668 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
| 1669 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1670 | ieee80211_sta_def_wmm_params(sdata, supp_rates_len, supp_rates); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 1671 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 1672 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 1673 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1674 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 1675 | |
Emmanuel Grumbach | 4492bea | 2008-09-22 17:10:10 +0300 | [diff] [blame] | 1676 | ieee80211_led_assoc(local, true); |
| 1677 | |
Dan Williams | 507b06d | 2008-06-03 23:39:55 -0400 | [diff] [blame] | 1678 | memset(&wrqu, 0, sizeof(wrqu)); |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1679 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1680 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
Bruno Randolf | a607268 | 2008-02-18 11:21:15 +0900 | [diff] [blame] | 1681 | |
| 1682 | return res; |
| 1683 | } |
| 1684 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1685 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
| 1686 | struct ieee80211_if_sta *ifsta, |
| 1687 | struct ieee80211_bss *bss) |
| 1688 | { |
| 1689 | return __ieee80211_sta_join_ibss(sdata, ifsta, |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 1690 | bss->cbss.bssid, |
| 1691 | bss->cbss.beacon_interval, |
| 1692 | bss->cbss.channel->center_freq, |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1693 | bss->supp_rates_len, bss->supp_rates, |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 1694 | bss->cbss.capability); |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 1695 | } |
| 1696 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1697 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1698 | struct ieee80211_mgmt *mgmt, |
| 1699 | size_t len, |
| 1700 | struct ieee80211_rx_status *rx_status, |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1701 | struct ieee802_11_elems *elems, |
| 1702 | bool beacon) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1703 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1704 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1705 | int freq; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 1706 | struct ieee80211_bss *bss; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1707 | struct sta_info *sta; |
Johannes Berg | fab7d4a | 2008-03-16 18:42:44 +0100 | [diff] [blame] | 1708 | struct ieee80211_channel *channel; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1709 | u64 beacon_timestamp, rx_timestamp; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 1710 | u32 supp_rates = 0; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1711 | enum ieee80211_band band = rx_status->band; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1712 | |
Johannes Berg | 5bda617 | 2008-09-08 11:05:10 +0200 | [diff] [blame] | 1713 | if (elems->ds_params && elems->ds_params_len == 1) |
| 1714 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); |
| 1715 | else |
| 1716 | freq = rx_status->freq; |
| 1717 | |
| 1718 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
| 1719 | |
| 1720 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) |
| 1721 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1722 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1723 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && elems->supp_rates && |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1724 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1725 | supp_rates = ieee80211_sta_get_rates(local, elems, band); |
| 1726 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 1727 | rcu_read_lock(); |
| 1728 | |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1729 | sta = sta_info_get(local, mgmt->sa); |
| 1730 | if (sta) { |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 1731 | u32 prev_rates; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1732 | |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1733 | prev_rates = sta->sta.supp_rates[band]; |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1734 | /* make sure mandatory rates are always added */ |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1735 | sta->sta.supp_rates[band] = supp_rates | |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 1736 | ieee80211_mandatory_rates(local, band); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1737 | |
| 1738 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1739 | if (sta->sta.supp_rates[band] != prev_rates) |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1740 | printk(KERN_DEBUG "%s: updated supp_rates set " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1741 | "for %pM based on beacon info (0x%llx | " |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1742 | "0x%llx -> 0x%llx)\n", |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1743 | sdata->dev->name, |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1744 | sta->sta.addr, |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1745 | (unsigned long long) prev_rates, |
| 1746 | (unsigned long long) supp_rates, |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 1747 | (unsigned long long) sta->sta.supp_rates[band]); |
Emmanuel Grumbach | 8e1535d | 2008-09-03 23:42:20 +0300 | [diff] [blame] | 1748 | #endif |
| 1749 | } else { |
Rami Rosen | ab1f5c0 | 2008-12-11 14:00:25 +0200 | [diff] [blame] | 1750 | ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1751 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1752 | |
Johannes Berg | 69e6c01 | 2008-09-08 11:05:08 +0200 | [diff] [blame] | 1753 | rcu_read_unlock(); |
| 1754 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1755 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1756 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1757 | channel, beacon); |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1758 | if (!bss) |
| 1759 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1760 | |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 1761 | if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && |
| 1762 | (memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0)) { |
| 1763 | struct ieee80211_channel_sw_ie *sw_elem = |
| 1764 | (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; |
| 1765 | ieee80211_process_chanswitch(sdata, sw_elem, bss); |
| 1766 | } |
| 1767 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1768 | /* was just updated in ieee80211_bss_info_update */ |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 1769 | beacon_timestamp = bss->cbss.tsf; |
Daniel Drake | 5628221 | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 1770 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1771 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC) |
| 1772 | goto put_bss; |
Johannes Berg | 30b89b0 | 2008-04-16 17:43:20 +0200 | [diff] [blame] | 1773 | |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1774 | /* check if we need to merge IBSS */ |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1775 | |
| 1776 | /* merge only on beacons (???) */ |
| 1777 | if (!beacon) |
| 1778 | goto put_bss; |
| 1779 | |
| 1780 | /* we use a fixed BSSID */ |
| 1781 | if (sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) |
| 1782 | goto put_bss; |
| 1783 | |
| 1784 | /* not an IBSS */ |
| 1785 | if (!(bss->cbss.capability & WLAN_CAPABILITY_IBSS)) |
| 1786 | goto put_bss; |
| 1787 | |
| 1788 | /* different channel */ |
| 1789 | if (bss->cbss.channel != local->oper_channel) |
| 1790 | goto put_bss; |
| 1791 | |
| 1792 | /* different SSID */ |
| 1793 | if (elems->ssid_len != sdata->u.sta.ssid_len || |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1794 | memcmp(elems->ssid, sdata->u.sta.ssid, |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1795 | sdata->u.sta.ssid_len)) |
| 1796 | goto put_bss; |
| 1797 | |
| 1798 | if (rx_status->flag & RX_FLAG_TSFT) { |
| 1799 | /* |
| 1800 | * For correct IBSS merging we need mactime; since mactime is |
| 1801 | * defined as the time the first data symbol of the frame hits |
| 1802 | * the PHY, and the timestamp of the beacon is defined as "the |
| 1803 | * time that the data symbol containing the first bit of the |
| 1804 | * timestamp is transmitted to the PHY plus the transmitting |
| 1805 | * STA's delays through its local PHY from the MAC-PHY |
| 1806 | * interface to its interface with the WM" (802.11 11.1.2) |
| 1807 | * - equals the time this bit arrives at the receiver - we have |
| 1808 | * to take into account the offset between the two. |
| 1809 | * |
| 1810 | * E.g. at 1 MBit that means mactime is 192 usec earlier |
| 1811 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. |
| 1812 | */ |
| 1813 | int rate; |
| 1814 | |
| 1815 | if (rx_status->flag & RX_FLAG_HT) |
| 1816 | rate = 65; /* TODO: HT rates */ |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1817 | else |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1818 | rate = local->hw.wiphy->bands[band]-> |
| 1819 | bitrates[rx_status->rate_idx].bitrate; |
| 1820 | |
| 1821 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); |
| 1822 | } else if (local && local->ops && local->ops->get_tsf) |
| 1823 | /* second best option: get current TSF */ |
| 1824 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); |
| 1825 | else |
| 1826 | /* can't merge without knowing the TSF */ |
| 1827 | rx_timestamp = -1LLU; |
| 1828 | |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1829 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1830 | printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" |
| 1831 | "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", |
| 1832 | mgmt->sa, mgmt->bssid, |
| 1833 | (unsigned long long)rx_timestamp, |
| 1834 | (unsigned long long)beacon_timestamp, |
| 1835 | (unsigned long long)(rx_timestamp - beacon_timestamp), |
| 1836 | jiffies); |
Johannes Berg | fba4a1e | 2008-02-21 11:08:33 +0100 | [diff] [blame] | 1837 | #endif |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1838 | |
| 1839 | if (beacon_timestamp > rx_timestamp) { |
| 1840 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 1841 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
| 1842 | "local TSF - IBSS merge with BSSID %pM\n", |
| 1843 | sdata->dev->name, mgmt->bssid); |
| 1844 | #endif |
| 1845 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
| 1846 | ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 1847 | } |
| 1848 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 1849 | put_bss: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1850 | ieee80211_rx_bss_put(local, bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1851 | } |
| 1852 | |
| 1853 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1854 | 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] | 1855 | struct ieee80211_mgmt *mgmt, |
| 1856 | size_t len, |
| 1857 | struct ieee80211_rx_status *rx_status) |
| 1858 | { |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1859 | size_t baselen; |
| 1860 | struct ieee802_11_elems elems; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1861 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1862 | |
Tomas Winkler | 8e7cdbb | 2008-08-03 14:32:01 +0300 | [diff] [blame] | 1863 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
| 1864 | return; /* ignore ProbeResp to foreign address */ |
| 1865 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1866 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
| 1867 | if (baselen > len) |
| 1868 | return; |
| 1869 | |
| 1870 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, |
| 1871 | &elems); |
| 1872 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1873 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 1874 | |
| 1875 | /* direct probe may be part of the association flow */ |
| 1876 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, |
| 1877 | &ifsta->request)) { |
| 1878 | printk(KERN_DEBUG "%s direct probe responded\n", |
| 1879 | sdata->dev->name); |
| 1880 | ieee80211_authenticate(sdata, ifsta); |
| 1881 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1882 | } |
| 1883 | |
| 1884 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1885 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1886 | struct ieee80211_mgmt *mgmt, |
| 1887 | size_t len, |
| 1888 | struct ieee80211_rx_status *rx_status) |
| 1889 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1890 | struct ieee80211_if_sta *ifsta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1891 | size_t baselen; |
| 1892 | struct ieee802_11_elems elems; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1893 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1894 | u32 changed = 0; |
Kalle Valo | 1fb3606 | 2009-02-10 17:09:24 +0200 | [diff] [blame] | 1895 | bool erp_valid, directed_tim; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1896 | u8 erp_value = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1897 | |
Ester Kummer | ae6a44e | 2008-06-27 18:54:48 +0300 | [diff] [blame] | 1898 | /* Process beacon from the current BSS */ |
| 1899 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; |
| 1900 | if (baselen > len) |
| 1901 | return; |
| 1902 | |
| 1903 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
| 1904 | |
Johannes Berg | 98c8fcc | 2008-09-08 17:44:26 +0200 | [diff] [blame] | 1905 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1906 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1907 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1908 | return; |
| 1909 | ifsta = &sdata->u.sta; |
| 1910 | |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 1911 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1912 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
| 1913 | return; |
| 1914 | |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 1915 | if (rx_status->freq != local->hw.conf.channel->center_freq) |
| 1916 | return; |
| 1917 | |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1918 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
| 1919 | elems.wmm_param_len); |
| 1920 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1921 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK && |
| 1922 | local->hw.conf.flags & IEEE80211_CONF_PS) { |
Kalle Valo | 1fb3606 | 2009-02-10 17:09:24 +0200 | [diff] [blame] | 1923 | directed_tim = ieee80211_check_tim(&elems, ifsta->aid); |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 1924 | |
Kalle Valo | 1fb3606 | 2009-02-10 17:09:24 +0200 | [diff] [blame] | 1925 | if (directed_tim) { |
Kalle Valo | 572e001 | 2009-02-10 17:09:31 +0200 | [diff] [blame] | 1926 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
| 1927 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 1928 | ieee80211_hw_config(local, |
| 1929 | IEEE80211_CONF_CHANGE_PS); |
| 1930 | ieee80211_send_nullfunc(local, sdata, 0); |
| 1931 | } else { |
| 1932 | local->pspolling = true; |
| 1933 | |
| 1934 | /* |
| 1935 | * Here is assumed that the driver will be |
| 1936 | * able to send ps-poll frame and receive a |
| 1937 | * response even though power save mode is |
| 1938 | * enabled, but some drivers might require |
| 1939 | * to disable power save here. This needs |
| 1940 | * to be investigated. |
| 1941 | */ |
| 1942 | ieee80211_send_pspoll(local, sdata); |
| 1943 | } |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 1944 | } |
| 1945 | } |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1946 | |
| 1947 | if (elems.erp_info && elems.erp_info_len >= 1) { |
| 1948 | erp_valid = true; |
| 1949 | erp_value = elems.erp_info[0]; |
| 1950 | } else { |
| 1951 | erp_valid = false; |
John W. Linville | 50c4afb | 2008-04-15 14:09:27 -0400 | [diff] [blame] | 1952 | } |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 1953 | changed |= ieee80211_handle_bss_capability(sdata, |
| 1954 | le16_to_cpu(mgmt->u.beacon.capab_info), |
| 1955 | erp_valid, erp_value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1956 | |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1957 | |
Vasanthakumar Thiagarajan | 53d6f81c | 2009-02-11 22:18:49 +0530 | [diff] [blame^] | 1958 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
| 1959 | !(ifsta->flags & IEEE80211_STA_TKIP_WEP_USED)) { |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1960 | struct sta_info *sta; |
| 1961 | struct ieee80211_supported_band *sband; |
| 1962 | u16 ap_ht_cap_flags; |
| 1963 | |
| 1964 | rcu_read_lock(); |
| 1965 | |
| 1966 | sta = sta_info_get(local, ifsta->bssid); |
| 1967 | if (!sta) { |
| 1968 | rcu_read_unlock(); |
| 1969 | return; |
| 1970 | } |
| 1971 | |
| 1972 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
| 1973 | |
| 1974 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
| 1975 | elems.ht_cap_elem, &sta->sta.ht_cap); |
| 1976 | |
| 1977 | ap_ht_cap_flags = sta->sta.ht_cap.cap; |
| 1978 | |
| 1979 | rcu_read_unlock(); |
| 1980 | |
| 1981 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
| 1982 | ap_ht_cap_flags); |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1983 | } |
| 1984 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1985 | if (elems.country_elem) { |
| 1986 | /* Note we are only reviewing this on beacons |
| 1987 | * for the BSSID we are associated to */ |
| 1988 | regulatory_hint_11d(local->hw.wiphy, |
| 1989 | elems.country_elem, elems.country_elem_len); |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 1990 | |
| 1991 | /* TODO: IBSS also needs this */ |
| 1992 | if (elems.pwr_constr_elem) |
| 1993 | ieee80211_handle_pwr_constr(sdata, |
| 1994 | le16_to_cpu(mgmt->u.probe_resp.capab_info), |
| 1995 | elems.pwr_constr_elem, |
| 1996 | elems.pwr_constr_elem_len); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1997 | } |
| 1998 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1999 | ieee80211_bss_info_change_notify(sdata, changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2000 | } |
| 2001 | |
| 2002 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2003 | 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] | 2004 | struct ieee80211_if_sta *ifsta, |
| 2005 | struct ieee80211_mgmt *mgmt, |
Rami Rosen | 504a71e | 2009-01-06 10:50:51 +0200 | [diff] [blame] | 2006 | size_t len) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2007 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2008 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2009 | int tx_last_beacon; |
| 2010 | struct sk_buff *skb; |
| 2011 | struct ieee80211_mgmt *resp; |
| 2012 | u8 *pos, *end; |
| 2013 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 2014 | if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2015 | len < 24 + 2 || !ifsta->probe_resp) |
| 2016 | return; |
| 2017 | |
| 2018 | if (local->ops->tx_last_beacon) |
| 2019 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); |
| 2020 | else |
| 2021 | tx_last_beacon = 1; |
| 2022 | |
| 2023 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2024 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" |
| 2025 | " (tx_last_beacon=%d)\n", |
| 2026 | sdata->dev->name, mgmt->sa, mgmt->da, |
| 2027 | mgmt->bssid, tx_last_beacon); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2028 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2029 | |
| 2030 | if (!tx_last_beacon) |
| 2031 | return; |
| 2032 | |
| 2033 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && |
| 2034 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) |
| 2035 | return; |
| 2036 | |
| 2037 | end = ((u8 *) mgmt) + len; |
| 2038 | pos = mgmt->u.probe_req.variable; |
| 2039 | if (pos[0] != WLAN_EID_SSID || |
| 2040 | pos + 2 + pos[1] > end) { |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 2041 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2042 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2043 | "from %pM\n", |
| 2044 | sdata->dev->name, mgmt->sa); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 2045 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2046 | return; |
| 2047 | } |
| 2048 | if (pos[1] != 0 && |
| 2049 | (pos[1] != ifsta->ssid_len || |
| 2050 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { |
| 2051 | /* Ignore ProbeReq for foreign SSID */ |
| 2052 | return; |
| 2053 | } |
| 2054 | |
| 2055 | /* Reply with ProbeResp */ |
Michael Wu | 0ec0b7a | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 2056 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2057 | if (!skb) |
| 2058 | return; |
| 2059 | |
| 2060 | resp = (struct ieee80211_mgmt *) skb->data; |
| 2061 | memcpy(resp->da, mgmt->sa, ETH_ALEN); |
| 2062 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2063 | printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", |
| 2064 | sdata->dev->name, resp->da); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2065 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Johannes Berg | e50db65 | 2008-09-09 15:07:09 +0200 | [diff] [blame] | 2066 | ieee80211_tx_skb(sdata, skb, 0); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2067 | } |
| 2068 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2069 | 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] | 2070 | struct ieee80211_rx_status *rx_status) |
| 2071 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2072 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2073 | struct ieee80211_if_sta *ifsta; |
| 2074 | struct ieee80211_mgmt *mgmt; |
| 2075 | u16 fc; |
| 2076 | |
| 2077 | if (skb->len < 24) |
| 2078 | goto fail; |
| 2079 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2080 | ifsta = &sdata->u.sta; |
| 2081 | |
| 2082 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 2083 | fc = le16_to_cpu(mgmt->frame_control); |
| 2084 | |
| 2085 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2086 | case IEEE80211_STYPE_PROBE_REQ: |
| 2087 | case IEEE80211_STYPE_PROBE_RESP: |
| 2088 | case IEEE80211_STYPE_BEACON: |
| 2089 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
| 2090 | case IEEE80211_STYPE_AUTH: |
| 2091 | case IEEE80211_STYPE_ASSOC_RESP: |
| 2092 | case IEEE80211_STYPE_REASSOC_RESP: |
| 2093 | case IEEE80211_STYPE_DEAUTH: |
| 2094 | case IEEE80211_STYPE_DISASSOC: |
| 2095 | skb_queue_tail(&ifsta->skb_queue, skb); |
| 2096 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2097 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2098 | } |
| 2099 | |
| 2100 | fail: |
| 2101 | kfree_skb(skb); |
| 2102 | } |
| 2103 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2104 | 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] | 2105 | struct sk_buff *skb) |
| 2106 | { |
| 2107 | struct ieee80211_rx_status *rx_status; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2108 | struct ieee80211_if_sta *ifsta; |
| 2109 | struct ieee80211_mgmt *mgmt; |
| 2110 | u16 fc; |
| 2111 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2112 | ifsta = &sdata->u.sta; |
| 2113 | |
| 2114 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
| 2115 | mgmt = (struct ieee80211_mgmt *) skb->data; |
| 2116 | fc = le16_to_cpu(mgmt->frame_control); |
| 2117 | |
Johannes Berg | fe3d2c3 | 2009-02-10 21:26:03 +0100 | [diff] [blame] | 2118 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
| 2119 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2120 | case IEEE80211_STYPE_PROBE_REQ: |
| 2121 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, |
| 2122 | skb->len); |
| 2123 | break; |
| 2124 | case IEEE80211_STYPE_PROBE_RESP: |
| 2125 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, |
| 2126 | rx_status); |
| 2127 | break; |
| 2128 | case IEEE80211_STYPE_BEACON: |
| 2129 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, |
| 2130 | rx_status); |
| 2131 | break; |
| 2132 | case IEEE80211_STYPE_AUTH: |
| 2133 | ieee80211_rx_mgmt_auth_ibss(sdata, ifsta, mgmt, |
| 2134 | skb->len); |
| 2135 | break; |
| 2136 | } |
| 2137 | } else { /* NL80211_IFTYPE_STATION */ |
| 2138 | switch (fc & IEEE80211_FCTL_STYPE) { |
| 2139 | case IEEE80211_STYPE_PROBE_RESP: |
| 2140 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, |
| 2141 | rx_status); |
| 2142 | break; |
| 2143 | case IEEE80211_STYPE_BEACON: |
| 2144 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, |
| 2145 | rx_status); |
| 2146 | break; |
| 2147 | case IEEE80211_STYPE_AUTH: |
| 2148 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
| 2149 | break; |
| 2150 | case IEEE80211_STYPE_ASSOC_RESP: |
| 2151 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, |
| 2152 | skb->len, 0); |
| 2153 | break; |
| 2154 | case IEEE80211_STYPE_REASSOC_RESP: |
| 2155 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, |
| 2156 | skb->len, 1); |
| 2157 | break; |
| 2158 | case IEEE80211_STYPE_DEAUTH: |
| 2159 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
| 2160 | break; |
| 2161 | case IEEE80211_STYPE_DISASSOC: |
| 2162 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, |
| 2163 | skb->len); |
| 2164 | break; |
| 2165 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2166 | } |
| 2167 | |
| 2168 | kfree_skb(skb); |
| 2169 | } |
| 2170 | |
| 2171 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2172 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2173 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2174 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2175 | int active = 0; |
| 2176 | struct sta_info *sta; |
| 2177 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 2178 | rcu_read_lock(); |
| 2179 | |
| 2180 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 2181 | if (sta->sdata == sdata && |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2182 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
| 2183 | jiffies)) { |
| 2184 | active++; |
| 2185 | break; |
| 2186 | } |
| 2187 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 2188 | |
| 2189 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2190 | |
| 2191 | return active; |
| 2192 | } |
| 2193 | |
| 2194 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2195 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2196 | struct ieee80211_if_sta *ifsta) |
| 2197 | { |
| 2198 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
| 2199 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2200 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
| 2201 | if (ieee80211_sta_active_ibss(sdata)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2202 | return; |
| 2203 | |
Alina Friedrichsen | 137f9f4 | 2009-01-06 02:49:07 +0100 | [diff] [blame] | 2204 | if ((sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) && |
| 2205 | (!(sdata->u.sta.flags & IEEE80211_STA_AUTO_CHANNEL_SEL))) |
| 2206 | return; |
| 2207 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2208 | 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] | 2209 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2210 | |
| 2211 | /* XXX maybe racy? */ |
| 2212 | if (sdata->local->scan_req) |
| 2213 | return; |
| 2214 | |
| 2215 | memcpy(sdata->local->int_scan_req.ssids[0].ssid, |
| 2216 | ifsta->ssid, IEEE80211_MAX_SSID_LEN); |
| 2217 | sdata->local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len; |
| 2218 | ieee80211_request_scan(sdata, &sdata->local->int_scan_req); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2219 | } |
| 2220 | |
| 2221 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2222 | static void ieee80211_sta_timer(unsigned long data) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2223 | { |
| 2224 | struct ieee80211_sub_if_data *sdata = |
| 2225 | (struct ieee80211_sub_if_data *) data; |
| 2226 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2227 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2228 | |
| 2229 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 2230 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2231 | } |
| 2232 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2233 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2234 | struct ieee80211_if_sta *ifsta) |
| 2235 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2236 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2237 | |
| 2238 | if (local->ops->reset_tsf) { |
| 2239 | /* Reset own TSF to allow time synchronization work. */ |
| 2240 | local->ops->reset_tsf(local_to_hw(local)); |
| 2241 | } |
| 2242 | |
| 2243 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ |
| 2244 | |
| 2245 | |
| 2246 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
| 2247 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
| 2248 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
| 2249 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; |
| 2250 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
| 2251 | ifsta->auth_alg = WLAN_AUTH_LEAP; |
| 2252 | else |
| 2253 | ifsta->auth_alg = WLAN_AUTH_OPEN; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2254 | ifsta->auth_transaction = -1; |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2255 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 2256 | ifsta->assoc_scan_tries = 0; |
Ron Rindjunsky | 9859b81 | 2008-08-09 03:02:19 +0300 | [diff] [blame] | 2257 | ifsta->direct_probe_tries = 0; |
Ron Rindjunsky | 6042a3e | 2008-08-08 01:50:46 +0300 | [diff] [blame] | 2258 | ifsta->auth_tries = 0; |
| 2259 | ifsta->assoc_tries = 0; |
Tomas Winkler | 24e6462 | 2008-09-08 17:33:40 +0200 | [diff] [blame] | 2260 | netif_tx_stop_all_queues(sdata->dev); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2261 | netif_carrier_off(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2262 | } |
| 2263 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2264 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2265 | struct ieee80211_if_sta *ifsta) |
| 2266 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2267 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2268 | struct ieee80211_supported_band *sband; |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 2269 | u8 *pos; |
| 2270 | u8 bssid[ETH_ALEN]; |
| 2271 | u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; |
| 2272 | u16 capability; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2273 | int i; |
| 2274 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2275 | if (sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) { |
| 2276 | memcpy(bssid, ifsta->bssid, ETH_ALEN); |
| 2277 | } else { |
| 2278 | /* Generate random, not broadcast, locally administered BSSID. Mix in |
| 2279 | * own MAC address to make sure that devices that do not have proper |
| 2280 | * random number generator get different BSSID. */ |
| 2281 | get_random_bytes(bssid, ETH_ALEN); |
| 2282 | for (i = 0; i < ETH_ALEN; i++) |
| 2283 | bssid[i] ^= sdata->dev->dev_addr[i]; |
| 2284 | bssid[0] &= ~0x01; |
| 2285 | bssid[0] |= 0x02; |
| 2286 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2287 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2288 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", |
| 2289 | sdata->dev->name, bssid); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2290 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 2291 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2292 | |
| 2293 | if (local->hw.conf.beacon_int == 0) |
Tomas Winkler | dc0ae30 | 2008-06-12 22:38:37 +0300 | [diff] [blame] | 2294 | local->hw.conf.beacon_int = 100; |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 2295 | |
| 2296 | capability = WLAN_CAPABILITY_IBSS; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2297 | |
| 2298 | if (sdata->default_key) |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 2299 | capability |= WLAN_CAPABILITY_PRIVACY; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2300 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2301 | sdata->drop_unencrypted = 0; |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 2302 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 2303 | pos = supp_rates; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2304 | for (i = 0; i < sband->n_bitrates; i++) { |
| 2305 | int rate = sband->bitrates[i].bitrate; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2306 | *pos++ = (u8) (rate / 5); |
| 2307 | } |
| 2308 | |
Johannes Berg | 99cf5f5 | 2009-02-10 21:25:56 +0100 | [diff] [blame] | 2309 | return __ieee80211_sta_join_ibss(sdata, ifsta, |
| 2310 | bssid, local->hw.conf.beacon_int, |
| 2311 | local->hw.conf.channel->center_freq, |
| 2312 | sband->n_bitrates, supp_rates, |
| 2313 | capability); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2314 | } |
| 2315 | |
| 2316 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2317 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2318 | struct ieee80211_if_sta *ifsta) |
| 2319 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2320 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2321 | struct ieee80211_bss *bss; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2322 | int active_ibss; |
| 2323 | |
| 2324 | if (ifsta->ssid_len == 0) |
| 2325 | return -EINVAL; |
| 2326 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2327 | active_ibss = ieee80211_sta_active_ibss(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2328 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2329 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2330 | sdata->dev->name, active_ibss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2331 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2332 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2333 | if (active_ibss) |
| 2334 | return 0; |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2335 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2336 | if (ifsta->flags & IEEE80211_STA_BSSID_SET) |
| 2337 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, 0, |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2338 | ifsta->ssid, ifsta->ssid_len); |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2339 | else |
| 2340 | bss = (void *)cfg80211_get_ibss(local->hw.wiphy, |
| 2341 | NULL, |
| 2342 | ifsta->ssid, ifsta->ssid_len); |
| 2343 | |
| 2344 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2345 | if (bss) |
| 2346 | printk(KERN_DEBUG " sta_find_ibss: selected %pM current " |
| 2347 | "%pM\n", bss->cbss.bssid, ifsta->bssid); |
| 2348 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2349 | |
| 2350 | if (bss && |
| 2351 | (!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) || |
| 2352 | memcmp(ifsta->bssid, bss->cbss.bssid, ETH_ALEN))) { |
| 2353 | int ret; |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2354 | |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2355 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2356 | " based on configured SSID\n", |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2357 | sdata->dev->name, bss->cbss.bssid); |
| 2358 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2359 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 2360 | ieee80211_rx_bss_put(local, bss); |
Tomas Winkler | 167ad6f | 2008-05-21 18:17:05 +0300 | [diff] [blame] | 2361 | return ret; |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2362 | } else if (bss) |
| 2363 | ieee80211_rx_bss_put(local, bss); |
Daniel Drake | 80693ce | 2008-07-19 23:31:17 +0100 | [diff] [blame] | 2364 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2365 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
| 2366 | printk(KERN_DEBUG " did not try to join ibss\n"); |
| 2367 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
| 2368 | |
| 2369 | /* Selected IBSS not found in current scan results - try to scan */ |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2370 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2371 | !ieee80211_sta_active_ibss(sdata)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2372 | mod_timer(&ifsta->timer, jiffies + |
| 2373 | IEEE80211_IBSS_MERGE_INTERVAL); |
| 2374 | } else if (time_after(jiffies, local->last_scan_completed + |
| 2375 | IEEE80211_SCAN_INTERVAL)) { |
| 2376 | 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] | 2377 | "join\n", sdata->dev->name); |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2378 | |
| 2379 | /* XXX maybe racy? */ |
| 2380 | if (local->scan_req) |
| 2381 | return -EBUSY; |
| 2382 | |
| 2383 | memcpy(local->int_scan_req.ssids[0].ssid, |
| 2384 | ifsta->ssid, IEEE80211_MAX_SSID_LEN); |
| 2385 | local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len; |
| 2386 | return ieee80211_request_scan(sdata, &local->int_scan_req); |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2387 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2388 | int interval = IEEE80211_SCAN_INTERVAL; |
| 2389 | |
| 2390 | if (time_after(jiffies, ifsta->ibss_join_req + |
| 2391 | IEEE80211_IBSS_JOIN_TIMEOUT)) { |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2392 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2393 | (!(local->oper_channel->flags & |
| 2394 | IEEE80211_CHAN_NO_IBSS))) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2395 | return ieee80211_sta_create_ibss(sdata, ifsta); |
Jiri Slaby | d6f2da5 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 2396 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2397 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 2398 | " %d MHz\n", sdata->dev->name, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2399 | local->hw.conf.channel->center_freq); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2400 | } |
| 2401 | |
| 2402 | /* No IBSS found - decrease scan interval and continue |
| 2403 | * scanning. */ |
| 2404 | interval = IEEE80211_SCAN_INTERVAL_SLOW; |
| 2405 | } |
| 2406 | |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 2407 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2408 | mod_timer(&ifsta->timer, jiffies + interval); |
| 2409 | return 0; |
| 2410 | } |
| 2411 | |
| 2412 | return 0; |
| 2413 | } |
| 2414 | |
| 2415 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2416 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
| 2417 | struct ieee80211_if_sta *ifsta) |
| 2418 | { |
| 2419 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2420 | struct ieee80211_bss *bss; |
| 2421 | u8 *bssid = ifsta->bssid, *ssid = ifsta->ssid; |
| 2422 | u8 ssid_len = ifsta->ssid_len; |
| 2423 | u16 capa_mask = WLAN_CAPABILITY_ESS; |
| 2424 | u16 capa_val = WLAN_CAPABILITY_ESS; |
| 2425 | struct ieee80211_channel *chan = local->oper_channel; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2426 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2427 | if (ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
| 2428 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 2429 | IEEE80211_STA_AUTO_CHANNEL_SEL)) { |
| 2430 | capa_mask |= WLAN_CAPABILITY_PRIVACY; |
| 2431 | if (sdata->default_key) |
| 2432 | capa_val |= WLAN_CAPABILITY_PRIVACY; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2433 | } |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2434 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2435 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
| 2436 | chan = NULL; |
| 2437 | |
| 2438 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
| 2439 | bssid = NULL; |
| 2440 | |
| 2441 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) { |
| 2442 | ssid = NULL; |
| 2443 | ssid_len = 0; |
| 2444 | } |
| 2445 | |
| 2446 | bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, |
| 2447 | bssid, ssid, ssid_len, |
| 2448 | capa_mask, capa_val); |
| 2449 | |
| 2450 | if (bss) { |
| 2451 | ieee80211_set_freq(sdata, bss->cbss.channel->center_freq); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2452 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2453 | ieee80211_sta_set_ssid(sdata, bss->ssid, |
| 2454 | bss->ssid_len); |
| 2455 | ieee80211_sta_set_bssid(sdata, bss->cbss.bssid); |
| 2456 | ieee80211_sta_def_wmm_params(sdata, bss->supp_rates_len, |
| 2457 | bss->supp_rates); |
Jouni Malinen | fdfacf0 | 2009-01-08 13:32:05 +0200 | [diff] [blame] | 2458 | if (sdata->u.sta.mfp == IEEE80211_MFP_REQUIRED) |
| 2459 | sdata->u.sta.flags |= IEEE80211_STA_MFP_ENABLED; |
| 2460 | else |
| 2461 | sdata->u.sta.flags &= ~IEEE80211_STA_MFP_ENABLED; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2462 | |
| 2463 | /* Send out direct probe if no probe resp was received or |
| 2464 | * the one we have is outdated |
| 2465 | */ |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2466 | if (!bss->last_probe_resp || |
| 2467 | time_after(jiffies, bss->last_probe_resp |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2468 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
| 2469 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
| 2470 | else |
| 2471 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 2472 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 2473 | ieee80211_rx_bss_put(local, bss); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2474 | ieee80211_sta_reset_auth(sdata, ifsta); |
| 2475 | return 0; |
| 2476 | } else { |
| 2477 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
| 2478 | ifsta->assoc_scan_tries++; |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2479 | /* XXX maybe racy? */ |
| 2480 | if (local->scan_req) |
| 2481 | return -1; |
| 2482 | memcpy(local->int_scan_req.ssids[0].ssid, |
| 2483 | ifsta->ssid, IEEE80211_MAX_SSID_LEN); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2484 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2485 | local->int_scan_req.ssids[0].ssid_len = 0; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2486 | else |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2487 | local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len; |
| 2488 | ieee80211_start_scan(sdata, &local->int_scan_req); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2489 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
| 2490 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
Sujith | e374055 | 2009-01-29 09:34:22 +0530 | [diff] [blame] | 2491 | } else { |
| 2492 | ifsta->assoc_scan_tries = 0; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2493 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
Sujith | e374055 | 2009-01-29 09:34:22 +0530 | [diff] [blame] | 2494 | } |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2495 | } |
| 2496 | return -1; |
| 2497 | } |
| 2498 | |
| 2499 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2500 | static void ieee80211_sta_work(struct work_struct *work) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2501 | { |
| 2502 | struct ieee80211_sub_if_data *sdata = |
| 2503 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); |
| 2504 | struct ieee80211_local *local = sdata->local; |
| 2505 | struct ieee80211_if_sta *ifsta; |
| 2506 | struct sk_buff *skb; |
| 2507 | |
| 2508 | if (!netif_running(sdata->dev)) |
| 2509 | return; |
| 2510 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 2511 | if (local->sw_scanning || local->hw_scanning) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2512 | return; |
| 2513 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2514 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION && |
| 2515 | sdata->vif.type != NL80211_IFTYPE_ADHOC)) |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2516 | return; |
| 2517 | ifsta = &sdata->u.sta; |
| 2518 | |
| 2519 | while ((skb = skb_dequeue(&ifsta->skb_queue))) |
| 2520 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
| 2521 | |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2522 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
| 2523 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
| 2524 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && |
| 2525 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2526 | ieee80211_start_scan(sdata, local->scan_req); |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2527 | return; |
| 2528 | } |
| 2529 | |
| 2530 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { |
| 2531 | if (ieee80211_sta_config_auth(sdata, ifsta)) |
| 2532 | return; |
| 2533 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
| 2534 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) |
| 2535 | return; |
| 2536 | |
| 2537 | switch (ifsta->state) { |
| 2538 | case IEEE80211_STA_MLME_DISABLED: |
| 2539 | break; |
| 2540 | case IEEE80211_STA_MLME_DIRECT_PROBE: |
| 2541 | ieee80211_direct_probe(sdata, ifsta); |
| 2542 | break; |
| 2543 | case IEEE80211_STA_MLME_AUTHENTICATE: |
| 2544 | ieee80211_authenticate(sdata, ifsta); |
| 2545 | break; |
| 2546 | case IEEE80211_STA_MLME_ASSOCIATE: |
| 2547 | ieee80211_associate(sdata, ifsta); |
| 2548 | break; |
| 2549 | case IEEE80211_STA_MLME_ASSOCIATED: |
| 2550 | ieee80211_associated(sdata, ifsta); |
| 2551 | break; |
| 2552 | case IEEE80211_STA_MLME_IBSS_SEARCH: |
| 2553 | ieee80211_sta_find_ibss(sdata, ifsta); |
| 2554 | break; |
| 2555 | case IEEE80211_STA_MLME_IBSS_JOINED: |
| 2556 | ieee80211_sta_merge_ibss(sdata, ifsta); |
| 2557 | break; |
Johannes Berg | 60f8b39 | 2008-09-08 17:44:22 +0200 | [diff] [blame] | 2558 | default: |
| 2559 | WARN_ON(1); |
| 2560 | break; |
| 2561 | } |
| 2562 | |
| 2563 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { |
| 2564 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
| 2565 | "mixed-cell disabled - disassociate\n", sdata->dev->name); |
| 2566 | |
| 2567 | ieee80211_set_disassoc(sdata, ifsta, false, true, |
| 2568 | WLAN_REASON_UNSPECIFIED); |
| 2569 | } |
| 2570 | } |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2571 | |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2572 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
| 2573 | { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2574 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
Johannes Berg | 7c95069 | 2008-09-11 00:01:48 +0200 | [diff] [blame] | 2575 | queue_work(sdata->local->hw.workqueue, |
| 2576 | &sdata->u.sta.work); |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2577 | } |
| 2578 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2579 | /* interface setup */ |
| 2580 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) |
| 2581 | { |
| 2582 | struct ieee80211_if_sta *ifsta; |
| 2583 | |
| 2584 | ifsta = &sdata->u.sta; |
| 2585 | INIT_WORK(&ifsta->work, ieee80211_sta_work); |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 2586 | INIT_WORK(&ifsta->chswitch_work, ieee80211_chswitch_work); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2587 | setup_timer(&ifsta->timer, ieee80211_sta_timer, |
| 2588 | (unsigned long) sdata); |
Sujith | c481ec9 | 2009-01-06 09:28:37 +0530 | [diff] [blame] | 2589 | setup_timer(&ifsta->chswitch_timer, ieee80211_chswitch_timer, |
| 2590 | (unsigned long) sdata); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2591 | skb_queue_head_init(&ifsta->skb_queue); |
| 2592 | |
| 2593 | ifsta->capab = WLAN_CAPABILITY_ESS; |
| 2594 | ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN | |
| 2595 | IEEE80211_AUTH_ALG_SHARED_KEY; |
| 2596 | ifsta->flags |= IEEE80211_STA_CREATE_IBSS | |
| 2597 | IEEE80211_STA_AUTO_BSSID_SEL | |
| 2598 | IEEE80211_STA_AUTO_CHANNEL_SEL; |
| 2599 | if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4) |
| 2600 | ifsta->flags |= IEEE80211_STA_WMM_ENABLED; |
| 2601 | } |
| 2602 | |
| 2603 | /* |
| 2604 | * Add a new IBSS station, will also be called by the RX code when, |
| 2605 | * in IBSS mode, receiving a frame from a yet-unknown station, hence |
| 2606 | * must be callable in atomic context. |
| 2607 | */ |
| 2608 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 2609 | u8 *bssid,u8 *addr, u32 supp_rates) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2610 | { |
| 2611 | struct ieee80211_local *local = sdata->local; |
| 2612 | struct sta_info *sta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2613 | int band = local->hw.conf.channel->band; |
| 2614 | |
| 2615 | /* TODO: Could consider removing the least recently used entry and |
| 2616 | * allow new one to be added. */ |
| 2617 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { |
| 2618 | if (net_ratelimit()) { |
| 2619 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2620 | "entry %pM\n", sdata->dev->name, addr); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2621 | } |
| 2622 | return NULL; |
| 2623 | } |
| 2624 | |
| 2625 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
| 2626 | return NULL; |
| 2627 | |
| 2628 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 2629 | printk(KERN_DEBUG "%s: Adding new IBSS station %pM (dev=%s)\n", |
| 2630 | wiphy_name(local->hw.wiphy), addr, sdata->dev->name); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2631 | #endif |
| 2632 | |
| 2633 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
| 2634 | if (!sta) |
| 2635 | return NULL; |
| 2636 | |
| 2637 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
| 2638 | |
| 2639 | /* make sure mandatory rates are always added */ |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 2640 | sta->sta.supp_rates[band] = supp_rates | |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 2641 | ieee80211_mandatory_rates(local, band); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2642 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2643 | rate_control_rate_init(sta); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2644 | |
| 2645 | if (sta_info_insert(sta)) |
| 2646 | return NULL; |
| 2647 | |
| 2648 | return sta; |
| 2649 | } |
| 2650 | |
| 2651 | /* configuration hooks */ |
| 2652 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
| 2653 | struct ieee80211_if_sta *ifsta) |
| 2654 | { |
| 2655 | struct ieee80211_local *local = sdata->local; |
| 2656 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2657 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2658 | return; |
| 2659 | |
| 2660 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
| 2661 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
| 2662 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
| 2663 | IEEE80211_STA_AUTO_SSID_SEL))) { |
| 2664 | |
| 2665 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) |
| 2666 | ieee80211_set_disassoc(sdata, ifsta, true, true, |
| 2667 | WLAN_REASON_DEAUTH_LEAVING); |
| 2668 | |
| 2669 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
| 2670 | queue_work(local->hw.workqueue, &ifsta->work); |
| 2671 | } |
| 2672 | } |
| 2673 | |
| 2674 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
| 2675 | { |
| 2676 | struct ieee80211_if_sta *ifsta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2677 | |
| 2678 | if (len > IEEE80211_MAX_SSID_LEN) |
| 2679 | return -EINVAL; |
| 2680 | |
| 2681 | ifsta = &sdata->u.sta; |
| 2682 | |
| 2683 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
| 2684 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); |
| 2685 | memcpy(ifsta->ssid, ssid, len); |
| 2686 | ifsta->ssid_len = len; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2687 | } |
| 2688 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2689 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
| 2690 | |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2691 | if (len) |
| 2692 | ifsta->flags |= IEEE80211_STA_SSID_SET; |
| 2693 | else |
| 2694 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; |
| 2695 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2696 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2697 | ifsta->ibss_join_req = jiffies; |
| 2698 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
| 2699 | return ieee80211_sta_find_ibss(sdata, ifsta); |
| 2700 | } |
| 2701 | |
| 2702 | return 0; |
| 2703 | } |
| 2704 | |
| 2705 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
| 2706 | { |
| 2707 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2708 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); |
| 2709 | *len = ifsta->ssid_len; |
| 2710 | return 0; |
| 2711 | } |
| 2712 | |
| 2713 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
| 2714 | { |
| 2715 | struct ieee80211_if_sta *ifsta; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2716 | |
| 2717 | ifsta = &sdata->u.sta; |
| 2718 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2719 | if (is_valid_ether_addr(bssid)) { |
| 2720 | memcpy(ifsta->bssid, bssid, ETH_ALEN); |
| 2721 | ifsta->flags |= IEEE80211_STA_BSSID_SET; |
| 2722 | } else { |
| 2723 | memset(ifsta->bssid, 0, ETH_ALEN); |
| 2724 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
| 2725 | } |
| 2726 | |
| 2727 | if (netif_running(sdata->dev)) { |
| 2728 | if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) { |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2729 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " |
| 2730 | "the low-level driver\n", sdata->dev->name); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2731 | } |
| 2732 | } |
| 2733 | |
Alina Friedrichsen | dfe6701 | 2009-01-24 01:19:04 +0100 | [diff] [blame] | 2734 | return ieee80211_sta_set_ssid(sdata, ifsta->ssid, ifsta->ssid_len); |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2735 | } |
| 2736 | |
| 2737 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
| 2738 | { |
| 2739 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2740 | |
| 2741 | kfree(ifsta->extra_ie); |
| 2742 | if (len == 0) { |
| 2743 | ifsta->extra_ie = NULL; |
| 2744 | ifsta->extra_ie_len = 0; |
| 2745 | return 0; |
| 2746 | } |
| 2747 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); |
| 2748 | if (!ifsta->extra_ie) { |
| 2749 | ifsta->extra_ie_len = 0; |
| 2750 | return -ENOMEM; |
| 2751 | } |
| 2752 | memcpy(ifsta->extra_ie, ie, len); |
| 2753 | ifsta->extra_ie_len = len; |
| 2754 | return 0; |
| 2755 | } |
| 2756 | |
| 2757 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
| 2758 | { |
| 2759 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2760 | |
| 2761 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
| 2762 | sdata->dev->name, reason); |
| 2763 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2764 | if (sdata->vif.type != NL80211_IFTYPE_STATION && |
| 2765 | sdata->vif.type != NL80211_IFTYPE_ADHOC) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2766 | return -EINVAL; |
| 2767 | |
| 2768 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
| 2769 | return 0; |
| 2770 | } |
| 2771 | |
| 2772 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
| 2773 | { |
| 2774 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 2775 | |
| 2776 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
| 2777 | sdata->dev->name, reason); |
| 2778 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2779 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 2780 | return -EINVAL; |
| 2781 | |
| 2782 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
| 2783 | return -1; |
| 2784 | |
| 2785 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
| 2786 | return 0; |
| 2787 | } |
| 2788 | |
| 2789 | /* scan finished notification */ |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2790 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) |
| 2791 | { |
| 2792 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
| 2793 | struct ieee80211_if_sta *ifsta; |
| 2794 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2795 | if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2796 | ifsta = &sdata->u.sta; |
Alina Friedrichsen | c0415b5 | 2009-01-29 09:59:43 +0100 | [diff] [blame] | 2797 | if ((!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) || |
| 2798 | !ieee80211_sta_active_ibss(sdata)) |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2799 | ieee80211_sta_find_ibss(sdata, ifsta); |
| 2800 | } |
Johannes Berg | a1678f8 | 2008-09-11 00:01:47 +0200 | [diff] [blame] | 2801 | |
| 2802 | /* Restart STA timers */ |
| 2803 | rcu_read_lock(); |
| 2804 | list_for_each_entry_rcu(sdata, &local->interfaces, list) |
| 2805 | ieee80211_restart_sta_timer(sdata); |
| 2806 | rcu_read_unlock(); |
Johannes Berg | 0a51b27 | 2008-09-08 17:44:25 +0200 | [diff] [blame] | 2807 | } |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2808 | |
| 2809 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
| 2810 | { |
| 2811 | struct ieee80211_local *local = |
| 2812 | container_of(work, struct ieee80211_local, |
| 2813 | dynamic_ps_disable_work); |
| 2814 | |
| 2815 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
| 2816 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; |
| 2817 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 2818 | } |
| 2819 | |
| 2820 | ieee80211_wake_queues_by_reason(&local->hw, |
| 2821 | IEEE80211_QUEUE_STOP_REASON_PS); |
| 2822 | } |
| 2823 | |
| 2824 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) |
| 2825 | { |
| 2826 | struct ieee80211_local *local = |
| 2827 | container_of(work, struct ieee80211_local, |
| 2828 | dynamic_ps_enable_work); |
Vivek Natarajan | a97b77b | 2008-12-23 18:39:02 -0800 | [diff] [blame] | 2829 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2830 | |
| 2831 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
| 2832 | return; |
| 2833 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 2834 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
| 2835 | ieee80211_send_nullfunc(local, sdata, 1); |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2836 | |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 2837 | local->hw.conf.flags |= IEEE80211_CONF_PS; |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 2838 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
| 2839 | } |
| 2840 | |
| 2841 | void ieee80211_dynamic_ps_timer(unsigned long data) |
| 2842 | { |
| 2843 | struct ieee80211_local *local = (void *) data; |
| 2844 | |
| 2845 | queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); |
| 2846 | } |