Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 1 | /* |
| 2 | * SME code for cfg80211's connect emulation. |
| 3 | * |
| 4 | * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> |
| 5 | * Copyright (C) 2009 Intel Corporation. All rights reserved. |
| 6 | */ |
| 7 | |
| 8 | #include <linux/etherdevice.h> |
| 9 | #include <linux/if_arp.h> |
| 10 | #include <linux/workqueue.h> |
| 11 | #include <net/cfg80211.h> |
| 12 | #include <net/rtnetlink.h> |
| 13 | #include "nl80211.h" |
| 14 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 15 | struct cfg80211_conn { |
| 16 | struct cfg80211_connect_params params; |
| 17 | /* these are sub-states of the _CONNECTING sme_state */ |
| 18 | enum { |
| 19 | CFG80211_CONN_IDLE, |
| 20 | CFG80211_CONN_SCANNING, |
| 21 | CFG80211_CONN_SCAN_AGAIN, |
| 22 | CFG80211_CONN_AUTHENTICATE_NEXT, |
| 23 | CFG80211_CONN_AUTHENTICATING, |
| 24 | CFG80211_CONN_ASSOCIATE_NEXT, |
| 25 | CFG80211_CONN_ASSOCIATING, |
| 26 | } state; |
| 27 | u8 bssid[ETH_ALEN]; |
| 28 | u8 *ie; |
| 29 | size_t ie_len; |
| 30 | bool auto_auth; |
| 31 | }; |
| 32 | |
| 33 | |
| 34 | static int cfg80211_conn_scan(struct wireless_dev *wdev) |
| 35 | { |
| 36 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); |
| 37 | struct cfg80211_scan_request *request; |
| 38 | int n_channels, err; |
| 39 | |
| 40 | ASSERT_RTNL(); |
| 41 | |
| 42 | if (drv->scan_req) |
| 43 | return -EBUSY; |
| 44 | |
| 45 | if (wdev->conn->params.channel) { |
| 46 | n_channels = 1; |
| 47 | } else { |
| 48 | enum ieee80211_band band; |
| 49 | n_channels = 0; |
| 50 | |
| 51 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 52 | if (!wdev->wiphy->bands[band]) |
| 53 | continue; |
| 54 | n_channels += wdev->wiphy->bands[band]->n_channels; |
| 55 | } |
| 56 | } |
| 57 | request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + |
| 58 | sizeof(request->channels[0]) * n_channels, |
| 59 | GFP_KERNEL); |
| 60 | if (!request) |
| 61 | return -ENOMEM; |
| 62 | |
| 63 | request->channels = (void *)((char *)request + sizeof(*request)); |
| 64 | if (wdev->conn->params.channel) |
| 65 | request->channels[0] = wdev->conn->params.channel; |
| 66 | else { |
| 67 | int i = 0, j; |
| 68 | enum ieee80211_band band; |
| 69 | |
| 70 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 71 | if (!wdev->wiphy->bands[band]) |
| 72 | continue; |
| 73 | for (j = 0; j < wdev->wiphy->bands[band]->n_channels; |
| 74 | i++, j++) |
| 75 | request->channels[i] = |
| 76 | &wdev->wiphy->bands[band]->channels[j]; |
| 77 | } |
| 78 | } |
| 79 | request->n_channels = n_channels; |
| 80 | request->ssids = (void *)(request->channels + n_channels); |
| 81 | request->n_ssids = 1; |
| 82 | |
| 83 | memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, |
| 84 | wdev->conn->params.ssid_len); |
| 85 | request->ssids[0].ssid_len = wdev->conn->params.ssid_len; |
| 86 | |
| 87 | request->ifidx = wdev->netdev->ifindex; |
| 88 | request->wiphy = &drv->wiphy; |
| 89 | |
| 90 | drv->scan_req = request; |
| 91 | |
| 92 | err = drv->ops->scan(wdev->wiphy, wdev->netdev, request); |
| 93 | if (!err) { |
| 94 | wdev->conn->state = CFG80211_CONN_SCANNING; |
| 95 | nl80211_send_scan_start(drv, wdev->netdev); |
| 96 | } else { |
| 97 | drv->scan_req = NULL; |
| 98 | kfree(request); |
| 99 | } |
| 100 | return err; |
| 101 | } |
| 102 | |
| 103 | static int cfg80211_conn_do_work(struct wireless_dev *wdev) |
| 104 | { |
| 105 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 106 | struct cfg80211_connect_params *params; |
| 107 | int err; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 108 | |
| 109 | if (!wdev->conn) |
| 110 | return 0; |
| 111 | |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 112 | params = &wdev->conn->params; |
| 113 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 114 | switch (wdev->conn->state) { |
| 115 | case CFG80211_CONN_SCAN_AGAIN: |
| 116 | return cfg80211_conn_scan(wdev); |
| 117 | case CFG80211_CONN_AUTHENTICATE_NEXT: |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 118 | BUG_ON(!drv->ops->auth); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 119 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; |
| 120 | return cfg80211_mlme_auth(drv, wdev->netdev, |
| 121 | params->channel, params->auth_type, |
| 122 | params->bssid, |
| 123 | params->ssid, params->ssid_len, |
| 124 | NULL, 0); |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 125 | case CFG80211_CONN_ASSOCIATE_NEXT: |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 126 | BUG_ON(!drv->ops->assoc); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 127 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; |
| 128 | err = cfg80211_mlme_assoc(drv, wdev->netdev, |
| 129 | params->channel, params->bssid, |
| 130 | params->ssid, params->ssid_len, |
| 131 | params->ie, params->ie_len, |
| 132 | false, ¶ms->crypto); |
| 133 | if (err) |
| 134 | cfg80211_mlme_deauth(drv, wdev->netdev, params->bssid, |
| 135 | NULL, 0, WLAN_REASON_DEAUTH_LEAVING); |
| 136 | return err; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 137 | default: |
| 138 | return 0; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | void cfg80211_conn_work(struct work_struct *work) |
| 143 | { |
| 144 | struct cfg80211_registered_device *drv = |
| 145 | container_of(work, struct cfg80211_registered_device, conn_work); |
| 146 | struct wireless_dev *wdev; |
| 147 | |
| 148 | rtnl_lock(); |
| 149 | mutex_lock(&drv->devlist_mtx); |
| 150 | |
| 151 | list_for_each_entry(wdev, &drv->netdev_list, list) { |
| 152 | if (!netif_running(wdev->netdev)) |
| 153 | continue; |
| 154 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
| 155 | continue; |
| 156 | if (cfg80211_conn_do_work(wdev)) |
| 157 | cfg80211_connect_result(wdev->netdev, |
| 158 | wdev->conn->params.bssid, |
| 159 | NULL, 0, NULL, 0, |
| 160 | WLAN_STATUS_UNSPECIFIED_FAILURE, |
| 161 | GFP_ATOMIC); |
| 162 | } |
| 163 | |
| 164 | mutex_unlock(&drv->devlist_mtx); |
| 165 | rtnl_unlock(); |
| 166 | } |
| 167 | |
| 168 | static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) |
| 169 | { |
| 170 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); |
| 171 | struct cfg80211_bss *bss; |
| 172 | u16 capa = WLAN_CAPABILITY_ESS; |
| 173 | |
| 174 | if (wdev->conn->params.privacy) |
| 175 | capa |= WLAN_CAPABILITY_PRIVACY; |
| 176 | |
| 177 | bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, |
| 178 | wdev->conn->params.ssid, |
| 179 | wdev->conn->params.ssid_len, |
| 180 | WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, |
| 181 | capa); |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 182 | if (!bss) |
| 183 | return false; |
| 184 | |
| 185 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); |
| 186 | wdev->conn->params.bssid = wdev->conn->bssid; |
| 187 | wdev->conn->params.channel = bss->channel; |
| 188 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; |
| 189 | schedule_work(&drv->conn_work); |
| 190 | |
| 191 | cfg80211_put_bss(bss); |
| 192 | return true; |
| 193 | } |
| 194 | |
| 195 | void cfg80211_sme_scan_done(struct net_device *dev) |
| 196 | { |
| 197 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 198 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); |
| 199 | |
| 200 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
| 201 | return; |
| 202 | |
| 203 | if (WARN_ON(!wdev->conn)) |
| 204 | return; |
| 205 | |
| 206 | if (wdev->conn->state != CFG80211_CONN_SCANNING && |
| 207 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) |
| 208 | return; |
| 209 | |
| 210 | if (!cfg80211_get_conn_bss(wdev)) { |
| 211 | /* not found */ |
| 212 | if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) |
| 213 | schedule_work(&drv->conn_work); |
| 214 | else |
| 215 | cfg80211_connect_result(dev, wdev->conn->params.bssid, |
| 216 | NULL, 0, NULL, 0, |
| 217 | WLAN_STATUS_UNSPECIFIED_FAILURE, |
| 218 | GFP_ATOMIC); |
| 219 | return; |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len) |
| 224 | { |
| 225 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 226 | struct wiphy *wiphy = wdev->wiphy; |
| 227 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| 228 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
| 229 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 230 | |
| 231 | /* should only RX auth frames when connecting */ |
| 232 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
| 233 | return; |
| 234 | |
| 235 | if (WARN_ON(!wdev->conn)) |
| 236 | return; |
| 237 | |
| 238 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && |
| 239 | wdev->conn->auto_auth && |
| 240 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { |
| 241 | /* select automatically between only open, shared, leap */ |
| 242 | switch (wdev->conn->params.auth_type) { |
| 243 | case NL80211_AUTHTYPE_OPEN_SYSTEM: |
| 244 | wdev->conn->params.auth_type = |
| 245 | NL80211_AUTHTYPE_SHARED_KEY; |
| 246 | break; |
| 247 | case NL80211_AUTHTYPE_SHARED_KEY: |
| 248 | wdev->conn->params.auth_type = |
| 249 | NL80211_AUTHTYPE_NETWORK_EAP; |
| 250 | break; |
| 251 | default: |
| 252 | /* huh? */ |
| 253 | wdev->conn->params.auth_type = |
| 254 | NL80211_AUTHTYPE_OPEN_SYSTEM; |
| 255 | break; |
| 256 | } |
| 257 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; |
| 258 | schedule_work(&rdev->conn_work); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 259 | } else if (status_code != WLAN_STATUS_SUCCESS) { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 260 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 261 | kfree(wdev->conn); |
| 262 | wdev->conn = NULL; |
| 263 | } else if (wdev->sme_state == CFG80211_SME_CONNECTING && |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 264 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
| 265 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; |
| 266 | schedule_work(&rdev->conn_work); |
| 267 | } |
| 268 | } |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 269 | |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 270 | static void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
| 271 | const u8 *req_ie, size_t req_ie_len, |
| 272 | const u8 *resp_ie, size_t resp_ie_len, |
| 273 | u16 status, bool wextev, gfp_t gfp) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 274 | { |
| 275 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 276 | struct cfg80211_bss *bss; |
| 277 | #ifdef CONFIG_WIRELESS_EXT |
| 278 | union iwreq_data wrqu; |
| 279 | #endif |
| 280 | |
| 281 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
| 282 | return; |
| 283 | |
Johannes Berg | e45cd82 | 2009-07-02 09:58:04 +0200 | [diff] [blame] | 284 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
| 285 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, |
| 286 | bssid, req_ie, req_ie_len, |
| 287 | resp_ie, resp_ie_len, gfp); |
| 288 | else |
| 289 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, |
| 290 | bssid, req_ie, req_ie_len, |
| 291 | resp_ie, resp_ie_len, |
| 292 | status, gfp); |
| 293 | |
| 294 | #ifdef CONFIG_WIRELESS_EXT |
| 295 | if (wextev) { |
| 296 | if (req_ie && status == WLAN_STATUS_SUCCESS) { |
| 297 | memset(&wrqu, 0, sizeof(wrqu)); |
| 298 | wrqu.data.length = req_ie_len; |
| 299 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); |
| 300 | } |
| 301 | |
| 302 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { |
| 303 | memset(&wrqu, 0, sizeof(wrqu)); |
| 304 | wrqu.data.length = resp_ie_len; |
| 305 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); |
| 306 | } |
| 307 | |
| 308 | memset(&wrqu, 0, sizeof(wrqu)); |
| 309 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 310 | if (bssid && status == WLAN_STATUS_SUCCESS) |
| 311 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
| 312 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
| 313 | } |
| 314 | #endif |
| 315 | |
| 316 | if (status == WLAN_STATUS_SUCCESS && |
| 317 | wdev->sme_state == CFG80211_SME_IDLE) { |
| 318 | wdev->sme_state = CFG80211_SME_CONNECTED; |
| 319 | return; |
| 320 | } |
| 321 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 322 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 323 | return; |
| 324 | |
| 325 | if (wdev->current_bss) { |
| 326 | cfg80211_unhold_bss(wdev->current_bss); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 327 | cfg80211_put_bss(&wdev->current_bss->pub); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 328 | wdev->current_bss = NULL; |
| 329 | } |
| 330 | |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 331 | if (wdev->conn) |
| 332 | wdev->conn->state = CFG80211_CONN_IDLE; |
| 333 | |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 334 | if (status == WLAN_STATUS_SUCCESS) { |
| 335 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, |
| 336 | wdev->ssid, wdev->ssid_len, |
| 337 | WLAN_CAPABILITY_ESS, |
| 338 | WLAN_CAPABILITY_ESS); |
| 339 | |
| 340 | if (WARN_ON(!bss)) |
| 341 | return; |
| 342 | |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 343 | cfg80211_hold_bss(bss_from_pub(bss)); |
| 344 | wdev->current_bss = bss_from_pub(bss); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 345 | |
| 346 | wdev->sme_state = CFG80211_SME_CONNECTED; |
| 347 | } else { |
| 348 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 349 | kfree(wdev->conn); |
| 350 | wdev->conn = NULL; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 351 | } |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 352 | } |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 353 | |
| 354 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
| 355 | const u8 *req_ie, size_t req_ie_len, |
| 356 | const u8 *resp_ie, size_t resp_ie_len, |
| 357 | u16 status, gfp_t gfp) |
| 358 | { |
| 359 | bool wextev = status == WLAN_STATUS_SUCCESS; |
| 360 | __cfg80211_connect_result(dev, bssid, req_ie, req_ie_len, resp_ie, resp_ie_len, status, wextev, gfp); |
| 361 | } |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 362 | EXPORT_SYMBOL(cfg80211_connect_result); |
| 363 | |
| 364 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, |
| 365 | const u8 *req_ie, size_t req_ie_len, |
| 366 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) |
| 367 | { |
| 368 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 369 | struct cfg80211_bss *bss; |
| 370 | #ifdef CONFIG_WIRELESS_EXT |
| 371 | union iwreq_data wrqu; |
| 372 | #endif |
| 373 | |
| 374 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
| 375 | return; |
| 376 | |
| 377 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) |
| 378 | return; |
| 379 | |
| 380 | /* internal error -- how did we get to CONNECTED w/o BSS? */ |
| 381 | if (WARN_ON(!wdev->current_bss)) { |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | cfg80211_unhold_bss(wdev->current_bss); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 386 | cfg80211_put_bss(&wdev->current_bss->pub); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 387 | wdev->current_bss = NULL; |
| 388 | |
| 389 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, |
| 390 | wdev->ssid, wdev->ssid_len, |
| 391 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); |
| 392 | |
| 393 | if (WARN_ON(!bss)) |
| 394 | return; |
| 395 | |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 396 | cfg80211_hold_bss(bss_from_pub(bss)); |
| 397 | wdev->current_bss = bss_from_pub(bss); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 398 | |
| 399 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, bssid, |
| 400 | req_ie, req_ie_len, resp_ie, resp_ie_len, gfp); |
| 401 | |
| 402 | #ifdef CONFIG_WIRELESS_EXT |
| 403 | if (req_ie) { |
| 404 | memset(&wrqu, 0, sizeof(wrqu)); |
| 405 | wrqu.data.length = req_ie_len; |
| 406 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); |
| 407 | } |
| 408 | |
| 409 | if (resp_ie) { |
| 410 | memset(&wrqu, 0, sizeof(wrqu)); |
| 411 | wrqu.data.length = resp_ie_len; |
| 412 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); |
| 413 | } |
| 414 | |
| 415 | memset(&wrqu, 0, sizeof(wrqu)); |
| 416 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 417 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
| 418 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
| 419 | #endif |
| 420 | } |
| 421 | EXPORT_SYMBOL(cfg80211_roamed); |
| 422 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 423 | void __cfg80211_disconnected(struct net_device *dev, gfp_t gfp, u8 *ie, |
| 424 | size_t ie_len, u16 reason, bool from_ap) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 425 | { |
| 426 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 427 | #ifdef CONFIG_WIRELESS_EXT |
| 428 | union iwreq_data wrqu; |
| 429 | #endif |
| 430 | |
| 431 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
| 432 | return; |
| 433 | |
| 434 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) |
| 435 | return; |
| 436 | |
| 437 | if (wdev->current_bss) { |
| 438 | cfg80211_unhold_bss(wdev->current_bss); |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 439 | cfg80211_put_bss(&wdev->current_bss->pub); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | wdev->current_bss = NULL; |
| 443 | wdev->sme_state = CFG80211_SME_IDLE; |
| 444 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 445 | if (wdev->conn) { |
| 446 | kfree(wdev->conn->ie); |
| 447 | wdev->conn->ie = NULL; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 448 | kfree(wdev->conn); |
| 449 | wdev->conn = NULL; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 450 | } |
| 451 | |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 452 | nl80211_send_disconnected(wiphy_to_dev(wdev->wiphy), dev, |
| 453 | reason, ie, ie_len, from_ap, gfp); |
| 454 | |
| 455 | #ifdef CONFIG_WIRELESS_EXT |
| 456 | memset(&wrqu, 0, sizeof(wrqu)); |
| 457 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 458 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
| 459 | #endif |
| 460 | } |
| 461 | |
| 462 | void cfg80211_disconnected(struct net_device *dev, u16 reason, |
| 463 | u8 *ie, size_t ie_len, gfp_t gfp) |
| 464 | { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 465 | __cfg80211_disconnected(dev, gfp, ie, ie_len, reason, true); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 466 | } |
| 467 | EXPORT_SYMBOL(cfg80211_disconnected); |
| 468 | |
| 469 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
| 470 | struct net_device *dev, |
| 471 | struct cfg80211_connect_params *connect) |
| 472 | { |
| 473 | int err; |
| 474 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 475 | |
| 476 | if (wdev->sme_state != CFG80211_SME_IDLE) |
| 477 | return -EALREADY; |
| 478 | |
| 479 | if (!rdev->ops->connect) { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 480 | if (!rdev->ops->auth || !rdev->ops->assoc) |
| 481 | return -EOPNOTSUPP; |
| 482 | |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 483 | if (WARN_ON(wdev->conn)) |
| 484 | return -EINPROGRESS; |
| 485 | |
| 486 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); |
| 487 | if (!wdev->conn) |
| 488 | return -ENOMEM; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 489 | |
| 490 | /* |
| 491 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. |
| 492 | */ |
| 493 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); |
| 494 | if (connect->bssid) { |
| 495 | wdev->conn->params.bssid = wdev->conn->bssid; |
| 496 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); |
| 497 | } |
| 498 | |
| 499 | if (connect->ie) { |
| 500 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, |
| 501 | GFP_KERNEL); |
| 502 | wdev->conn->params.ie = wdev->conn->ie; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 503 | if (!wdev->conn->ie) { |
| 504 | kfree(wdev->conn); |
| 505 | wdev->conn = NULL; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 506 | return -ENOMEM; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 507 | } |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { |
| 511 | wdev->conn->auto_auth = true; |
| 512 | /* start with open system ... should mostly work */ |
| 513 | wdev->conn->params.auth_type = |
| 514 | NL80211_AUTHTYPE_OPEN_SYSTEM; |
| 515 | } else { |
| 516 | wdev->conn->auto_auth = false; |
| 517 | } |
| 518 | |
| 519 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
| 520 | wdev->ssid_len = connect->ssid_len; |
| 521 | wdev->conn->params.ssid = wdev->ssid; |
| 522 | wdev->conn->params.ssid_len = connect->ssid_len; |
| 523 | |
| 524 | /* don't care about result -- but fill bssid & channel */ |
| 525 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) |
| 526 | cfg80211_get_conn_bss(wdev); |
| 527 | |
| 528 | wdev->sme_state = CFG80211_SME_CONNECTING; |
| 529 | |
| 530 | /* we're good if we have both BSSID and channel */ |
| 531 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { |
| 532 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; |
| 533 | err = cfg80211_conn_do_work(wdev); |
| 534 | } else { |
| 535 | /* otherwise we'll need to scan for the AP first */ |
| 536 | err = cfg80211_conn_scan(wdev); |
| 537 | /* |
| 538 | * If we can't scan right now, then we need to scan again |
| 539 | * after the current scan finished, since the parameters |
| 540 | * changed (unless we find a good AP anyway). |
| 541 | */ |
| 542 | if (err == -EBUSY) { |
| 543 | err = 0; |
| 544 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; |
| 545 | } |
| 546 | } |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 547 | if (err) { |
| 548 | kfree(wdev->conn); |
| 549 | wdev->conn = NULL; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 550 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 551 | } |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 552 | |
| 553 | return err; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 554 | } else { |
| 555 | wdev->sme_state = CFG80211_SME_CONNECTING; |
| 556 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); |
| 557 | if (err) { |
| 558 | wdev->sme_state = CFG80211_SME_IDLE; |
| 559 | return err; |
| 560 | } |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 561 | |
| 562 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
| 563 | wdev->ssid_len = connect->ssid_len; |
| 564 | |
| 565 | return 0; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 566 | } |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 570 | struct net_device *dev, u16 reason, bool wextev) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 571 | { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 572 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 573 | int err; |
| 574 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 575 | if (wdev->sme_state == CFG80211_SME_IDLE) |
| 576 | return -EINVAL; |
| 577 | |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 578 | if (!rdev->ops->disconnect) { |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 579 | if (!rdev->ops->deauth) |
| 580 | return -EOPNOTSUPP; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 581 | |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 582 | /* was it connected by userspace SME? */ |
| 583 | if (!wdev->conn) { |
| 584 | cfg80211_mlme_down(rdev, dev); |
| 585 | return 0; |
| 586 | } |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 587 | |
| 588 | if (wdev->sme_state == CFG80211_SME_CONNECTING && |
| 589 | (wdev->conn->state == CFG80211_CONN_SCANNING || |
| 590 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { |
| 591 | wdev->sme_state = CFG80211_SME_IDLE; |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 592 | kfree(wdev->conn); |
| 593 | wdev->conn = NULL; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 594 | return 0; |
| 595 | } |
| 596 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 597 | /* wdev->conn->params.bssid must be set if > SCANNING */ |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 598 | err = cfg80211_mlme_deauth(rdev, dev, wdev->conn->params.bssid, |
| 599 | NULL, 0, reason); |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 600 | if (err) |
| 601 | return err; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 602 | } else { |
| 603 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); |
| 604 | if (err) |
| 605 | return err; |
| 606 | } |
| 607 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame] | 608 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
| 609 | __cfg80211_disconnected(dev, GFP_KERNEL, NULL, 0, 0, false); |
| 610 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) |
Johannes Berg | f212935 | 2009-07-01 21:26:56 +0200 | [diff] [blame] | 611 | __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, |
| 612 | WLAN_STATUS_UNSPECIFIED_FAILURE, |
| 613 | wextev, GFP_KERNEL); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 614 | |
| 615 | return 0; |
| 616 | } |
Johannes Berg | 19957bb | 2009-07-02 17:20:43 +0200 | [diff] [blame^] | 617 | |
| 618 | void cfg80211_sme_disassoc(struct net_device *dev, int idx) |
| 619 | { |
| 620 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 621 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
| 622 | u8 bssid[ETH_ALEN]; |
| 623 | |
| 624 | if (!wdev->conn) |
| 625 | return; |
| 626 | |
| 627 | if (wdev->conn->state == CFG80211_CONN_IDLE) |
| 628 | return; |
| 629 | |
| 630 | /* |
| 631 | * Ok, so the association was made by this SME -- we don't |
| 632 | * want it any more so deauthenticate too. |
| 633 | */ |
| 634 | |
| 635 | if (!wdev->auth_bsses[idx]) |
| 636 | return; |
| 637 | |
| 638 | memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN); |
| 639 | if (cfg80211_mlme_deauth(rdev, dev, bssid, |
| 640 | NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) { |
| 641 | /* whatever -- assume gone anyway */ |
| 642 | cfg80211_unhold_bss(wdev->auth_bsses[idx]); |
| 643 | cfg80211_put_bss(&wdev->auth_bsses[idx]->pub); |
| 644 | wdev->auth_bsses[idx] = NULL; |
| 645 | } |
| 646 | } |