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); |
| 106 | union { |
| 107 | struct cfg80211_auth_request auth_req; |
| 108 | struct cfg80211_assoc_request assoc_req; |
| 109 | } u; |
| 110 | |
| 111 | memset(&u, 0, sizeof(u)); |
| 112 | |
| 113 | if (!wdev->conn) |
| 114 | return 0; |
| 115 | |
| 116 | switch (wdev->conn->state) { |
| 117 | case CFG80211_CONN_SCAN_AGAIN: |
| 118 | return cfg80211_conn_scan(wdev); |
| 119 | case CFG80211_CONN_AUTHENTICATE_NEXT: |
| 120 | u.auth_req.chan = wdev->conn->params.channel; |
| 121 | u.auth_req.peer_addr = wdev->conn->params.bssid; |
| 122 | u.auth_req.ssid = wdev->conn->params.ssid; |
| 123 | u.auth_req.ssid_len = wdev->conn->params.ssid_len; |
| 124 | u.auth_req.auth_type = wdev->conn->params.auth_type; |
| 125 | u.auth_req.ie = NULL; |
| 126 | u.auth_req.ie_len = 0; |
| 127 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; |
| 128 | BUG_ON(!drv->ops->auth); |
| 129 | return drv->ops->auth(wdev->wiphy, wdev->netdev, &u.auth_req); |
| 130 | case CFG80211_CONN_ASSOCIATE_NEXT: |
| 131 | u.assoc_req.chan = wdev->conn->params.channel; |
| 132 | u.assoc_req.peer_addr = wdev->conn->params.bssid; |
| 133 | u.assoc_req.ssid = wdev->conn->params.ssid; |
| 134 | u.assoc_req.ssid_len = wdev->conn->params.ssid_len; |
| 135 | u.assoc_req.ie = wdev->conn->params.ie; |
| 136 | u.assoc_req.ie_len = wdev->conn->params.ie_len; |
| 137 | u.assoc_req.use_mfp = false; |
| 138 | memcpy(&u.assoc_req.crypto, &wdev->conn->params.crypto, |
| 139 | sizeof(u.assoc_req.crypto)); |
| 140 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; |
| 141 | BUG_ON(!drv->ops->assoc); |
| 142 | return drv->ops->assoc(wdev->wiphy, wdev->netdev, |
| 143 | &u.assoc_req); |
| 144 | default: |
| 145 | return 0; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | void cfg80211_conn_work(struct work_struct *work) |
| 150 | { |
| 151 | struct cfg80211_registered_device *drv = |
| 152 | container_of(work, struct cfg80211_registered_device, conn_work); |
| 153 | struct wireless_dev *wdev; |
| 154 | |
| 155 | rtnl_lock(); |
| 156 | mutex_lock(&drv->devlist_mtx); |
| 157 | |
| 158 | list_for_each_entry(wdev, &drv->netdev_list, list) { |
| 159 | if (!netif_running(wdev->netdev)) |
| 160 | continue; |
| 161 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
| 162 | continue; |
| 163 | if (cfg80211_conn_do_work(wdev)) |
| 164 | cfg80211_connect_result(wdev->netdev, |
| 165 | wdev->conn->params.bssid, |
| 166 | NULL, 0, NULL, 0, |
| 167 | WLAN_STATUS_UNSPECIFIED_FAILURE, |
| 168 | GFP_ATOMIC); |
| 169 | } |
| 170 | |
| 171 | mutex_unlock(&drv->devlist_mtx); |
| 172 | rtnl_unlock(); |
| 173 | } |
| 174 | |
| 175 | static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) |
| 176 | { |
| 177 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); |
| 178 | struct cfg80211_bss *bss; |
| 179 | u16 capa = WLAN_CAPABILITY_ESS; |
| 180 | |
| 181 | if (wdev->conn->params.privacy) |
| 182 | capa |= WLAN_CAPABILITY_PRIVACY; |
| 183 | |
| 184 | bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, |
| 185 | wdev->conn->params.ssid, |
| 186 | wdev->conn->params.ssid_len, |
| 187 | WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, |
| 188 | capa); |
| 189 | |
| 190 | if (!bss) |
| 191 | return false; |
| 192 | |
| 193 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); |
| 194 | wdev->conn->params.bssid = wdev->conn->bssid; |
| 195 | wdev->conn->params.channel = bss->channel; |
| 196 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; |
| 197 | schedule_work(&drv->conn_work); |
| 198 | |
| 199 | cfg80211_put_bss(bss); |
| 200 | return true; |
| 201 | } |
| 202 | |
| 203 | void cfg80211_sme_scan_done(struct net_device *dev) |
| 204 | { |
| 205 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 206 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); |
| 207 | |
| 208 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
| 209 | return; |
| 210 | |
| 211 | if (WARN_ON(!wdev->conn)) |
| 212 | return; |
| 213 | |
| 214 | if (wdev->conn->state != CFG80211_CONN_SCANNING && |
| 215 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) |
| 216 | return; |
| 217 | |
| 218 | if (!cfg80211_get_conn_bss(wdev)) { |
| 219 | /* not found */ |
| 220 | if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) |
| 221 | schedule_work(&drv->conn_work); |
| 222 | else |
| 223 | cfg80211_connect_result(dev, wdev->conn->params.bssid, |
| 224 | NULL, 0, NULL, 0, |
| 225 | WLAN_STATUS_UNSPECIFIED_FAILURE, |
| 226 | GFP_ATOMIC); |
| 227 | return; |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len) |
| 232 | { |
| 233 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 234 | struct wiphy *wiphy = wdev->wiphy; |
| 235 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| 236 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
| 237 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); |
| 238 | |
| 239 | /* should only RX auth frames when connecting */ |
| 240 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
| 241 | return; |
| 242 | |
| 243 | if (WARN_ON(!wdev->conn)) |
| 244 | return; |
| 245 | |
| 246 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && |
| 247 | wdev->conn->auto_auth && |
| 248 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { |
| 249 | /* select automatically between only open, shared, leap */ |
| 250 | switch (wdev->conn->params.auth_type) { |
| 251 | case NL80211_AUTHTYPE_OPEN_SYSTEM: |
| 252 | wdev->conn->params.auth_type = |
| 253 | NL80211_AUTHTYPE_SHARED_KEY; |
| 254 | break; |
| 255 | case NL80211_AUTHTYPE_SHARED_KEY: |
| 256 | wdev->conn->params.auth_type = |
| 257 | NL80211_AUTHTYPE_NETWORK_EAP; |
| 258 | break; |
| 259 | default: |
| 260 | /* huh? */ |
| 261 | wdev->conn->params.auth_type = |
| 262 | NL80211_AUTHTYPE_OPEN_SYSTEM; |
| 263 | break; |
| 264 | } |
| 265 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; |
| 266 | schedule_work(&rdev->conn_work); |
| 267 | } else if (status_code != WLAN_STATUS_SUCCESS) |
| 268 | wdev->sme_state = CFG80211_SME_IDLE; |
| 269 | else if (wdev->sme_state == CFG80211_SME_CONNECTING && |
| 270 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
| 271 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; |
| 272 | schedule_work(&rdev->conn_work); |
| 273 | } |
| 274 | } |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 275 | |
| 276 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
| 277 | const u8 *req_ie, size_t req_ie_len, |
| 278 | const u8 *resp_ie, size_t resp_ie_len, |
| 279 | u16 status, gfp_t gfp) |
| 280 | { |
| 281 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 282 | struct cfg80211_bss *bss; |
| 283 | #ifdef CONFIG_WIRELESS_EXT |
| 284 | union iwreq_data wrqu; |
| 285 | #endif |
| 286 | |
| 287 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
| 288 | return; |
| 289 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 290 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 291 | return; |
| 292 | |
| 293 | if (wdev->current_bss) { |
| 294 | cfg80211_unhold_bss(wdev->current_bss); |
| 295 | cfg80211_put_bss(wdev->current_bss); |
| 296 | wdev->current_bss = NULL; |
| 297 | } |
| 298 | |
| 299 | if (status == WLAN_STATUS_SUCCESS) { |
| 300 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, |
| 301 | wdev->ssid, wdev->ssid_len, |
| 302 | WLAN_CAPABILITY_ESS, |
| 303 | WLAN_CAPABILITY_ESS); |
| 304 | |
| 305 | if (WARN_ON(!bss)) |
| 306 | return; |
| 307 | |
| 308 | cfg80211_hold_bss(bss); |
| 309 | wdev->current_bss = bss; |
| 310 | |
| 311 | wdev->sme_state = CFG80211_SME_CONNECTED; |
| 312 | } else { |
| 313 | wdev->sme_state = CFG80211_SME_IDLE; |
| 314 | } |
| 315 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 316 | if (wdev->conn) |
| 317 | wdev->conn->state = CFG80211_CONN_IDLE; |
| 318 | |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 319 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, bssid, |
| 320 | req_ie, req_ie_len, resp_ie, resp_ie_len, |
| 321 | status, gfp); |
| 322 | |
| 323 | #ifdef CONFIG_WIRELESS_EXT |
| 324 | if (req_ie && status == WLAN_STATUS_SUCCESS) { |
| 325 | memset(&wrqu, 0, sizeof(wrqu)); |
| 326 | wrqu.data.length = req_ie_len; |
| 327 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); |
| 328 | } |
| 329 | |
| 330 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { |
| 331 | memset(&wrqu, 0, sizeof(wrqu)); |
| 332 | wrqu.data.length = resp_ie_len; |
| 333 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); |
| 334 | } |
| 335 | |
| 336 | memset(&wrqu, 0, sizeof(wrqu)); |
| 337 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 338 | if (bssid && status == WLAN_STATUS_SUCCESS) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 339 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
| 340 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
| 341 | #endif |
| 342 | } |
| 343 | EXPORT_SYMBOL(cfg80211_connect_result); |
| 344 | |
| 345 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, |
| 346 | const u8 *req_ie, size_t req_ie_len, |
| 347 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) |
| 348 | { |
| 349 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 350 | struct cfg80211_bss *bss; |
| 351 | #ifdef CONFIG_WIRELESS_EXT |
| 352 | union iwreq_data wrqu; |
| 353 | #endif |
| 354 | |
| 355 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
| 356 | return; |
| 357 | |
| 358 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) |
| 359 | return; |
| 360 | |
| 361 | /* internal error -- how did we get to CONNECTED w/o BSS? */ |
| 362 | if (WARN_ON(!wdev->current_bss)) { |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | cfg80211_unhold_bss(wdev->current_bss); |
| 367 | cfg80211_put_bss(wdev->current_bss); |
| 368 | wdev->current_bss = NULL; |
| 369 | |
| 370 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, |
| 371 | wdev->ssid, wdev->ssid_len, |
| 372 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); |
| 373 | |
| 374 | if (WARN_ON(!bss)) |
| 375 | return; |
| 376 | |
| 377 | cfg80211_hold_bss(bss); |
| 378 | wdev->current_bss = bss; |
| 379 | |
| 380 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, bssid, |
| 381 | req_ie, req_ie_len, resp_ie, resp_ie_len, gfp); |
| 382 | |
| 383 | #ifdef CONFIG_WIRELESS_EXT |
| 384 | if (req_ie) { |
| 385 | memset(&wrqu, 0, sizeof(wrqu)); |
| 386 | wrqu.data.length = req_ie_len; |
| 387 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); |
| 388 | } |
| 389 | |
| 390 | if (resp_ie) { |
| 391 | memset(&wrqu, 0, sizeof(wrqu)); |
| 392 | wrqu.data.length = resp_ie_len; |
| 393 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); |
| 394 | } |
| 395 | |
| 396 | memset(&wrqu, 0, sizeof(wrqu)); |
| 397 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 398 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
| 399 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
| 400 | #endif |
| 401 | } |
| 402 | EXPORT_SYMBOL(cfg80211_roamed); |
| 403 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 404 | void __cfg80211_disconnected(struct net_device *dev, gfp_t gfp, u8 *ie, |
| 405 | size_t ie_len, u16 reason, bool from_ap) |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 406 | { |
| 407 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 408 | #ifdef CONFIG_WIRELESS_EXT |
| 409 | union iwreq_data wrqu; |
| 410 | #endif |
| 411 | |
| 412 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
| 413 | return; |
| 414 | |
| 415 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) |
| 416 | return; |
| 417 | |
| 418 | if (wdev->current_bss) { |
| 419 | cfg80211_unhold_bss(wdev->current_bss); |
| 420 | cfg80211_put_bss(wdev->current_bss); |
| 421 | } |
| 422 | |
| 423 | wdev->current_bss = NULL; |
| 424 | wdev->sme_state = CFG80211_SME_IDLE; |
| 425 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 426 | if (wdev->conn) { |
| 427 | kfree(wdev->conn->ie); |
| 428 | wdev->conn->ie = NULL; |
| 429 | } |
| 430 | |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 431 | nl80211_send_disconnected(wiphy_to_dev(wdev->wiphy), dev, |
| 432 | reason, ie, ie_len, from_ap, gfp); |
| 433 | |
| 434 | #ifdef CONFIG_WIRELESS_EXT |
| 435 | memset(&wrqu, 0, sizeof(wrqu)); |
| 436 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| 437 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
| 438 | #endif |
| 439 | } |
| 440 | |
| 441 | void cfg80211_disconnected(struct net_device *dev, u16 reason, |
| 442 | u8 *ie, size_t ie_len, gfp_t gfp) |
| 443 | { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 444 | __cfg80211_disconnected(dev, gfp, ie, ie_len, reason, true); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 445 | } |
| 446 | EXPORT_SYMBOL(cfg80211_disconnected); |
| 447 | |
| 448 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
| 449 | struct net_device *dev, |
| 450 | struct cfg80211_connect_params *connect) |
| 451 | { |
| 452 | int err; |
| 453 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 454 | |
| 455 | if (wdev->sme_state != CFG80211_SME_IDLE) |
| 456 | return -EALREADY; |
| 457 | |
| 458 | if (!rdev->ops->connect) { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 459 | if (!rdev->ops->auth || !rdev->ops->assoc) |
| 460 | return -EOPNOTSUPP; |
| 461 | |
| 462 | if (!wdev->conn) { |
| 463 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); |
| 464 | if (!wdev->conn) |
| 465 | return -ENOMEM; |
| 466 | } else |
| 467 | memset(wdev->conn, 0, sizeof(*wdev->conn)); |
| 468 | |
| 469 | /* |
| 470 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. |
| 471 | */ |
| 472 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); |
| 473 | if (connect->bssid) { |
| 474 | wdev->conn->params.bssid = wdev->conn->bssid; |
| 475 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); |
| 476 | } |
| 477 | |
| 478 | if (connect->ie) { |
| 479 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, |
| 480 | GFP_KERNEL); |
| 481 | wdev->conn->params.ie = wdev->conn->ie; |
| 482 | if (!wdev->conn->ie) |
| 483 | return -ENOMEM; |
| 484 | } |
| 485 | |
| 486 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { |
| 487 | wdev->conn->auto_auth = true; |
| 488 | /* start with open system ... should mostly work */ |
| 489 | wdev->conn->params.auth_type = |
| 490 | NL80211_AUTHTYPE_OPEN_SYSTEM; |
| 491 | } else { |
| 492 | wdev->conn->auto_auth = false; |
| 493 | } |
| 494 | |
| 495 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
| 496 | wdev->ssid_len = connect->ssid_len; |
| 497 | wdev->conn->params.ssid = wdev->ssid; |
| 498 | wdev->conn->params.ssid_len = connect->ssid_len; |
| 499 | |
| 500 | /* don't care about result -- but fill bssid & channel */ |
| 501 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) |
| 502 | cfg80211_get_conn_bss(wdev); |
| 503 | |
| 504 | wdev->sme_state = CFG80211_SME_CONNECTING; |
| 505 | |
| 506 | /* we're good if we have both BSSID and channel */ |
| 507 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { |
| 508 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; |
| 509 | err = cfg80211_conn_do_work(wdev); |
| 510 | } else { |
| 511 | /* otherwise we'll need to scan for the AP first */ |
| 512 | err = cfg80211_conn_scan(wdev); |
| 513 | /* |
| 514 | * If we can't scan right now, then we need to scan again |
| 515 | * after the current scan finished, since the parameters |
| 516 | * changed (unless we find a good AP anyway). |
| 517 | */ |
| 518 | if (err == -EBUSY) { |
| 519 | err = 0; |
| 520 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; |
| 521 | } |
| 522 | } |
| 523 | if (err) |
| 524 | wdev->sme_state = CFG80211_SME_IDLE; |
| 525 | |
| 526 | return err; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 527 | } else { |
| 528 | wdev->sme_state = CFG80211_SME_CONNECTING; |
| 529 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); |
| 530 | if (err) { |
| 531 | wdev->sme_state = CFG80211_SME_IDLE; |
| 532 | return err; |
| 533 | } |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 534 | |
| 535 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
| 536 | wdev->ssid_len = connect->ssid_len; |
| 537 | |
| 538 | return 0; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 539 | } |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
| 543 | struct net_device *dev, u16 reason) |
| 544 | { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 545 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 546 | int err; |
| 547 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 548 | if (wdev->sme_state == CFG80211_SME_IDLE) |
| 549 | return -EINVAL; |
| 550 | |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 551 | if (!rdev->ops->disconnect) { |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 552 | struct cfg80211_deauth_request deauth; |
| 553 | u8 bssid[ETH_ALEN]; |
| 554 | |
| 555 | /* internal bug. */ |
| 556 | if (WARN_ON(!wdev->conn)) |
| 557 | return -EINVAL; |
| 558 | |
| 559 | if (wdev->sme_state == CFG80211_SME_CONNECTING && |
| 560 | (wdev->conn->state == CFG80211_CONN_SCANNING || |
| 561 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { |
| 562 | wdev->sme_state = CFG80211_SME_IDLE; |
| 563 | return 0; |
| 564 | } |
| 565 | |
| 566 | if (!rdev->ops->deauth) |
| 567 | return -EOPNOTSUPP; |
| 568 | |
| 569 | memset(&deauth, 0, sizeof(deauth)); |
| 570 | |
| 571 | /* wdev->conn->params.bssid must be set if > SCANNING */ |
| 572 | memcpy(bssid, wdev->conn->params.bssid, ETH_ALEN); |
| 573 | deauth.peer_addr = bssid; |
| 574 | deauth.reason_code = reason; |
| 575 | |
| 576 | err = rdev->ops->deauth(&rdev->wiphy, dev, &deauth); |
| 577 | if (err) |
| 578 | return err; |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 579 | } else { |
| 580 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); |
| 581 | if (err) |
| 582 | return err; |
| 583 | } |
| 584 | |
Johannes Berg | 6829c87 | 2009-07-02 09:13:27 +0200 | [diff] [blame^] | 585 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
| 586 | __cfg80211_disconnected(dev, GFP_KERNEL, NULL, 0, 0, false); |
| 587 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) |
| 588 | cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, |
| 589 | WLAN_STATUS_UNSPECIFIED_FAILURE, |
| 590 | GFP_KERNEL); |
Samuel Ortiz | b23aa67 | 2009-07-01 21:26:54 +0200 | [diff] [blame] | 591 | |
| 592 | return 0; |
| 593 | } |