blob: 3ed35c345caed81966eb0ad52b7e1a4b350ec473 [file] [log] [blame]
Samuel Ortizb23aa672009-07-01 21:26:54 +02001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090010#include <linux/slab.h>
Samuel Ortizb23aa672009-07-01 21:26:54 +020011#include <linux/workqueue.h>
Johannes Berga9a11622009-07-27 12:01:53 +020012#include <linux/wireless.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040013#include <linux/export.h>
Johannes Berga9a11622009-07-27 12:01:53 +020014#include <net/iw_handler.h>
Samuel Ortizb23aa672009-07-01 21:26:54 +020015#include <net/cfg80211.h>
16#include <net/rtnetlink.h>
17#include "nl80211.h"
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070018#include "reg.h"
Hila Gonene35e4d22012-06-27 17:19:42 +030019#include "rdev-ops.h"
Samuel Ortizb23aa672009-07-01 21:26:54 +020020
Johannes Berg6829c872009-07-02 09:13:27 +020021struct cfg80211_conn {
22 struct cfg80211_connect_params params;
23 /* these are sub-states of the _CONNECTING sme_state */
24 enum {
25 CFG80211_CONN_IDLE,
26 CFG80211_CONN_SCANNING,
27 CFG80211_CONN_SCAN_AGAIN,
28 CFG80211_CONN_AUTHENTICATE_NEXT,
29 CFG80211_CONN_AUTHENTICATING,
30 CFG80211_CONN_ASSOCIATE_NEXT,
31 CFG80211_CONN_ASSOCIATING,
Johannes Berg7d930bc2009-10-20 15:08:53 +090032 CFG80211_CONN_DEAUTH_ASSOC_FAIL,
Johannes Berg6829c872009-07-02 09:13:27 +020033 } state;
Johannes Bergf401a6f2009-08-07 14:51:05 +020034 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
Johannes Berg6829c872009-07-02 09:13:27 +020035 u8 *ie;
36 size_t ie_len;
Johannes Bergf401a6f2009-08-07 14:51:05 +020037 bool auto_auth, prev_bssid_valid;
Johannes Berg6829c872009-07-02 09:13:27 +020038};
39
John W. Linville20925fe2010-07-20 12:32:52 -040040static bool cfg80211_is_all_idle(void)
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050041{
42 struct cfg80211_registered_device *rdev;
43 struct wireless_dev *wdev;
44 bool is_all_idle = true;
45
46 mutex_lock(&cfg80211_mutex);
47
48 /*
49 * All devices must be idle as otherwise if you are actively
50 * scanning some new beacon hints could be learned and would
51 * count as new regulatory hints.
52 */
53 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
54 cfg80211_lock_rdev(rdev);
Johannes Berg89a54e42012-06-15 14:33:17 +020055 list_for_each_entry(wdev, &rdev->wdev_list, list) {
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050056 wdev_lock(wdev);
57 if (wdev->sme_state != CFG80211_SME_IDLE)
58 is_all_idle = false;
59 wdev_unlock(wdev);
60 }
61 cfg80211_unlock_rdev(rdev);
62 }
63
64 mutex_unlock(&cfg80211_mutex);
65
66 return is_all_idle;
67}
68
69static void disconnect_work(struct work_struct *work)
70{
71 if (!cfg80211_is_all_idle())
72 return;
73
74 regulatory_hint_disconnect();
75}
76
77static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
Johannes Berg6829c872009-07-02 09:13:27 +020078
79static int cfg80211_conn_scan(struct wireless_dev *wdev)
80{
Johannes Berg79c97e92009-07-07 03:56:12 +020081 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +020082 struct cfg80211_scan_request *request;
83 int n_channels, err;
84
85 ASSERT_RTNL();
Johannes Berg79c97e92009-07-07 03:56:12 +020086 ASSERT_RDEV_LOCK(rdev);
Johannes Berg667503dd2009-07-07 03:56:11 +020087 ASSERT_WDEV_LOCK(wdev);
Johannes Bergf9f47522013-03-19 15:04:07 +010088 lockdep_assert_held(&rdev->sched_scan_mtx);
Johannes Berg6829c872009-07-02 09:13:27 +020089
Johannes Berg79c97e92009-07-07 03:56:12 +020090 if (rdev->scan_req)
Johannes Berg6829c872009-07-02 09:13:27 +020091 return -EBUSY;
92
93 if (wdev->conn->params.channel) {
94 n_channels = 1;
95 } else {
96 enum ieee80211_band band;
97 n_channels = 0;
98
99 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
100 if (!wdev->wiphy->bands[band])
101 continue;
102 n_channels += wdev->wiphy->bands[band]->n_channels;
103 }
104 }
105 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
106 sizeof(request->channels[0]) * n_channels,
107 GFP_KERNEL);
108 if (!request)
109 return -ENOMEM;
110
Johannes Berg6829c872009-07-02 09:13:27 +0200111 if (wdev->conn->params.channel)
112 request->channels[0] = wdev->conn->params.channel;
113 else {
114 int i = 0, j;
115 enum ieee80211_band band;
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530116 struct ieee80211_supported_band *bands;
117 struct ieee80211_channel *channel;
Johannes Berg6829c872009-07-02 09:13:27 +0200118
119 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530120 bands = wdev->wiphy->bands[band];
121 if (!bands)
Johannes Berg6829c872009-07-02 09:13:27 +0200122 continue;
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530123 for (j = 0; j < bands->n_channels; j++) {
124 channel = &bands->channels[j];
125 if (channel->flags & IEEE80211_CHAN_DISABLED)
126 continue;
127 request->channels[i++] = channel;
128 }
129 request->rates[band] = (1 << bands->n_bitrates) - 1;
Johannes Berg6829c872009-07-02 09:13:27 +0200130 }
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530131 n_channels = i;
Johannes Berg6829c872009-07-02 09:13:27 +0200132 }
133 request->n_channels = n_channels;
Johannes Berg5ba63532009-08-07 17:54:07 +0200134 request->ssids = (void *)&request->channels[n_channels];
Johannes Berg6829c872009-07-02 09:13:27 +0200135 request->n_ssids = 1;
136
137 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
138 wdev->conn->params.ssid_len);
139 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
140
Johannes Bergfd014282012-06-18 19:17:03 +0200141 request->wdev = wdev;
Johannes Berg79c97e92009-07-07 03:56:12 +0200142 request->wiphy = &rdev->wiphy;
Sam Leffler15d60302012-10-11 21:03:34 -0700143 request->scan_start = jiffies;
Johannes Berg6829c872009-07-02 09:13:27 +0200144
Johannes Berg79c97e92009-07-07 03:56:12 +0200145 rdev->scan_req = request;
Johannes Berg6829c872009-07-02 09:13:27 +0200146
Hila Gonene35e4d22012-06-27 17:19:42 +0300147 err = rdev_scan(rdev, request);
Johannes Berg6829c872009-07-02 09:13:27 +0200148 if (!err) {
149 wdev->conn->state = CFG80211_CONN_SCANNING;
Johannes Bergfd014282012-06-18 19:17:03 +0200150 nl80211_send_scan_start(rdev, wdev);
Johannes Berg463d0182009-07-14 00:33:35 +0200151 dev_hold(wdev->netdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200152 } else {
Johannes Berg79c97e92009-07-07 03:56:12 +0200153 rdev->scan_req = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200154 kfree(request);
155 }
156 return err;
157}
158
159static int cfg80211_conn_do_work(struct wireless_dev *wdev)
160{
Johannes Berg79c97e92009-07-07 03:56:12 +0200161 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
Johannes Berg19957bb2009-07-02 17:20:43 +0200162 struct cfg80211_connect_params *params;
Johannes Bergf62fab72013-02-21 20:09:09 +0100163 struct cfg80211_assoc_request req = {};
Johannes Berg19957bb2009-07-02 17:20:43 +0200164 int err;
Johannes Berg6829c872009-07-02 09:13:27 +0200165
Johannes Berg667503dd2009-07-07 03:56:11 +0200166 ASSERT_WDEV_LOCK(wdev);
167
Johannes Berg6829c872009-07-02 09:13:27 +0200168 if (!wdev->conn)
169 return 0;
170
Johannes Berg19957bb2009-07-02 17:20:43 +0200171 params = &wdev->conn->params;
172
Johannes Berg6829c872009-07-02 09:13:27 +0200173 switch (wdev->conn->state) {
174 case CFG80211_CONN_SCAN_AGAIN:
175 return cfg80211_conn_scan(wdev);
176 case CFG80211_CONN_AUTHENTICATE_NEXT:
Johannes Berg79c97e92009-07-07 03:56:12 +0200177 BUG_ON(!rdev->ops->auth);
Johannes Berg19957bb2009-07-02 17:20:43 +0200178 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
Johannes Berg79c97e92009-07-07 03:56:12 +0200179 return __cfg80211_mlme_auth(rdev, wdev->netdev,
Johannes Berg667503dd2009-07-07 03:56:11 +0200180 params->channel, params->auth_type,
181 params->bssid,
182 params->ssid, params->ssid_len,
Johannes Bergfffd0932009-07-08 14:22:54 +0200183 NULL, 0,
184 params->key, params->key_len,
Jouni Malinene39e5b52012-09-30 19:29:39 +0300185 params->key_idx, NULL, 0);
Johannes Berg6829c872009-07-02 09:13:27 +0200186 case CFG80211_CONN_ASSOCIATE_NEXT:
Johannes Berg79c97e92009-07-07 03:56:12 +0200187 BUG_ON(!rdev->ops->assoc);
Johannes Berg19957bb2009-07-02 17:20:43 +0200188 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200189 if (wdev->conn->prev_bssid_valid)
Johannes Bergf62fab72013-02-21 20:09:09 +0100190 req.prev_bssid = wdev->conn->prev_bssid;
191 req.ie = params->ie;
192 req.ie_len = params->ie_len;
193 req.use_mfp = params->mfp != NL80211_MFP_NO;
194 req.crypto = params->crypto;
195 req.flags = params->flags;
196 req.ht_capa = params->ht_capa;
197 req.ht_capa_mask = params->ht_capa_mask;
198 req.vht_capa = params->vht_capa;
199 req.vht_capa_mask = params->vht_capa_mask;
200
201 err = __cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
202 params->bssid, params->ssid,
203 params->ssid_len, &req);
Johannes Berg19957bb2009-07-02 17:20:43 +0200204 if (err)
Johannes Berg79c97e92009-07-07 03:56:12 +0200205 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200206 NULL, 0,
Jouni Malinend5cdfac2010-04-04 09:37:19 +0300207 WLAN_REASON_DEAUTH_LEAVING,
208 false);
Johannes Berg19957bb2009-07-02 17:20:43 +0200209 return err;
Johannes Berg7d930bc2009-10-20 15:08:53 +0900210 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
211 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
212 NULL, 0,
Jouni Malinend5cdfac2010-04-04 09:37:19 +0300213 WLAN_REASON_DEAUTH_LEAVING, false);
Johannes Berg7d930bc2009-10-20 15:08:53 +0900214 /* return an error so that we call __cfg80211_connect_result() */
215 return -EINVAL;
Johannes Berg6829c872009-07-02 09:13:27 +0200216 default:
217 return 0;
218 }
219}
220
221void cfg80211_conn_work(struct work_struct *work)
222{
Johannes Berg79c97e92009-07-07 03:56:12 +0200223 struct cfg80211_registered_device *rdev =
Johannes Berg6829c872009-07-02 09:13:27 +0200224 container_of(work, struct cfg80211_registered_device, conn_work);
225 struct wireless_dev *wdev;
Johannes Berg7400f422009-10-31 07:40:37 +0100226 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200227
228 rtnl_lock();
Johannes Berg79c97e92009-07-07 03:56:12 +0200229 cfg80211_lock_rdev(rdev);
230 mutex_lock(&rdev->devlist_mtx);
Artem Savkov90e09702013-03-30 21:20:14 +0400231 mutex_lock(&rdev->sched_scan_mtx);
Johannes Berg6829c872009-07-02 09:13:27 +0200232
Johannes Berg89a54e42012-06-15 14:33:17 +0200233 list_for_each_entry(wdev, &rdev->wdev_list, list) {
Johannes Bergc8157972013-05-23 18:10:21 +0200234 if (!wdev->netdev)
235 continue;
236
Johannes Berg667503dd2009-07-07 03:56:11 +0200237 wdev_lock(wdev);
238 if (!netif_running(wdev->netdev)) {
239 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200240 continue;
Johannes Berg667503dd2009-07-07 03:56:11 +0200241 }
Johannes Berg217c1572013-03-20 14:05:52 +0100242 if (wdev->sme_state != CFG80211_SME_CONNECTING || !wdev->conn) {
Johannes Berg667503dd2009-07-07 03:56:11 +0200243 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200244 continue;
Johannes Berg667503dd2009-07-07 03:56:11 +0200245 }
Johannes Berg7400f422009-10-31 07:40:37 +0100246 if (wdev->conn->params.bssid) {
247 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
248 bssid = bssid_buf;
249 }
Johannes Berg6829c872009-07-02 09:13:27 +0200250 if (cfg80211_conn_do_work(wdev))
Johannes Berg667503dd2009-07-07 03:56:11 +0200251 __cfg80211_connect_result(
Johannes Berg7d930bc2009-10-20 15:08:53 +0900252 wdev->netdev, bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200253 NULL, 0, NULL, 0,
254 WLAN_STATUS_UNSPECIFIED_FAILURE,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200255 false, NULL);
Johannes Berg667503dd2009-07-07 03:56:11 +0200256 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200257 }
258
Artem Savkov90e09702013-03-30 21:20:14 +0400259 mutex_unlock(&rdev->sched_scan_mtx);
Johannes Berg79c97e92009-07-07 03:56:12 +0200260 mutex_unlock(&rdev->devlist_mtx);
261 cfg80211_unlock_rdev(rdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200262 rtnl_unlock();
263}
264
Johannes Bergbbac31f2009-09-16 09:04:26 -0700265static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
Johannes Berg6829c872009-07-02 09:13:27 +0200266{
Johannes Berg79c97e92009-07-07 03:56:12 +0200267 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +0200268 struct cfg80211_bss *bss;
269 u16 capa = WLAN_CAPABILITY_ESS;
270
Johannes Berg667503dd2009-07-07 03:56:11 +0200271 ASSERT_WDEV_LOCK(wdev);
272
Johannes Berg6829c872009-07-02 09:13:27 +0200273 if (wdev->conn->params.privacy)
274 capa |= WLAN_CAPABILITY_PRIVACY;
275
Jouni Malinened9d0102011-05-16 19:40:15 +0300276 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
277 wdev->conn->params.bssid,
Johannes Berg6829c872009-07-02 09:13:27 +0200278 wdev->conn->params.ssid,
279 wdev->conn->params.ssid_len,
280 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
281 capa);
Johannes Berg6829c872009-07-02 09:13:27 +0200282 if (!bss)
Johannes Bergbbac31f2009-09-16 09:04:26 -0700283 return NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200284
285 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
286 wdev->conn->params.bssid = wdev->conn->bssid;
287 wdev->conn->params.channel = bss->channel;
288 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
Johannes Berg79c97e92009-07-07 03:56:12 +0200289 schedule_work(&rdev->conn_work);
Johannes Berg6829c872009-07-02 09:13:27 +0200290
Johannes Bergbbac31f2009-09-16 09:04:26 -0700291 return bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200292}
293
Johannes Berg667503dd2009-07-07 03:56:11 +0200294static void __cfg80211_sme_scan_done(struct net_device *dev)
Johannes Berg6829c872009-07-02 09:13:27 +0200295{
296 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg79c97e92009-07-07 03:56:12 +0200297 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
Johannes Bergbbac31f2009-09-16 09:04:26 -0700298 struct cfg80211_bss *bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200299
Johannes Berg667503dd2009-07-07 03:56:11 +0200300 ASSERT_WDEV_LOCK(wdev);
301
Johannes Berg6829c872009-07-02 09:13:27 +0200302 if (wdev->sme_state != CFG80211_SME_CONNECTING)
303 return;
304
Zhu Yid4b1a682009-07-16 17:34:14 +0800305 if (!wdev->conn)
Johannes Berg6829c872009-07-02 09:13:27 +0200306 return;
307
308 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
309 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
310 return;
311
Johannes Bergbbac31f2009-09-16 09:04:26 -0700312 bss = cfg80211_get_conn_bss(wdev);
313 if (bss) {
Johannes Berg5b112d32013-02-01 01:49:58 +0100314 cfg80211_put_bss(&rdev->wiphy, bss);
Johannes Bergbbac31f2009-09-16 09:04:26 -0700315 } else {
Johannes Berg6829c872009-07-02 09:13:27 +0200316 /* not found */
317 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
Johannes Berg79c97e92009-07-07 03:56:12 +0200318 schedule_work(&rdev->conn_work);
Johannes Berg6829c872009-07-02 09:13:27 +0200319 else
Johannes Berg667503dd2009-07-07 03:56:11 +0200320 __cfg80211_connect_result(
321 wdev->netdev,
322 wdev->conn->params.bssid,
323 NULL, 0, NULL, 0,
324 WLAN_STATUS_UNSPECIFIED_FAILURE,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200325 false, NULL);
Johannes Berg6829c872009-07-02 09:13:27 +0200326 }
327}
328
Johannes Berg667503dd2009-07-07 03:56:11 +0200329void cfg80211_sme_scan_done(struct net_device *dev)
330{
331 struct wireless_dev *wdev = dev->ieee80211_ptr;
332
333 wdev_lock(wdev);
334 __cfg80211_sme_scan_done(dev);
335 wdev_unlock(wdev);
336}
337
338void cfg80211_sme_rx_auth(struct net_device *dev,
339 const u8 *buf, size_t len)
Johannes Berg6829c872009-07-02 09:13:27 +0200340{
341 struct wireless_dev *wdev = dev->ieee80211_ptr;
342 struct wiphy *wiphy = wdev->wiphy;
343 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
344 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
345 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
346
Johannes Berg667503dd2009-07-07 03:56:11 +0200347 ASSERT_WDEV_LOCK(wdev);
348
Johannes Berg6829c872009-07-02 09:13:27 +0200349 /* should only RX auth frames when connecting */
350 if (wdev->sme_state != CFG80211_SME_CONNECTING)
351 return;
352
353 if (WARN_ON(!wdev->conn))
354 return;
355
356 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
357 wdev->conn->auto_auth &&
358 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
359 /* select automatically between only open, shared, leap */
360 switch (wdev->conn->params.auth_type) {
361 case NL80211_AUTHTYPE_OPEN_SYSTEM:
Johannes Bergfffd0932009-07-08 14:22:54 +0200362 if (wdev->connect_keys)
363 wdev->conn->params.auth_type =
364 NL80211_AUTHTYPE_SHARED_KEY;
365 else
366 wdev->conn->params.auth_type =
367 NL80211_AUTHTYPE_NETWORK_EAP;
Johannes Berg6829c872009-07-02 09:13:27 +0200368 break;
369 case NL80211_AUTHTYPE_SHARED_KEY:
370 wdev->conn->params.auth_type =
371 NL80211_AUTHTYPE_NETWORK_EAP;
372 break;
373 default:
374 /* huh? */
375 wdev->conn->params.auth_type =
376 NL80211_AUTHTYPE_OPEN_SYSTEM;
377 break;
378 }
379 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
380 schedule_work(&rdev->conn_work);
Johannes Berg19957bb2009-07-02 17:20:43 +0200381 } else if (status_code != WLAN_STATUS_SUCCESS) {
Johannes Berg4bde0f72009-07-07 23:46:51 +0200382 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200383 status_code, false, NULL);
Johannes Berg19957bb2009-07-02 17:20:43 +0200384 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
Johannes Berg6829c872009-07-02 09:13:27 +0200385 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
386 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
387 schedule_work(&rdev->conn_work);
388 }
389}
Samuel Ortizb23aa672009-07-01 21:26:54 +0200390
Johannes Bergf401a6f2009-08-07 14:51:05 +0200391bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
392{
393 struct wiphy *wiphy = wdev->wiphy;
394 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
395
396 if (WARN_ON(!wdev->conn))
397 return false;
398
399 if (!wdev->conn->prev_bssid_valid)
400 return false;
401
402 /*
403 * Some stupid APs don't accept reassoc, so we
404 * need to fall back to trying regular assoc.
405 */
406 wdev->conn->prev_bssid_valid = false;
407 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
408 schedule_work(&rdev->conn_work);
409
410 return true;
411}
412
Johannes Berg7d930bc2009-10-20 15:08:53 +0900413void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
414{
415 struct wiphy *wiphy = wdev->wiphy;
416 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
417
418 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
419 schedule_work(&rdev->conn_work);
420}
421
Johannes Berg667503dd2009-07-07 03:56:11 +0200422void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
423 const u8 *req_ie, size_t req_ie_len,
424 const u8 *resp_ie, size_t resp_ie_len,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200425 u16 status, bool wextev,
426 struct cfg80211_bss *bss)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200427{
428 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg9caf0362012-11-29 01:25:20 +0100429 const u8 *country_ie;
Johannes Berg3d23e342009-09-29 23:27:28 +0200430#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200431 union iwreq_data wrqu;
432#endif
433
Johannes Berg667503dd2009-07-07 03:56:11 +0200434 ASSERT_WDEV_LOCK(wdev);
435
Johannes Berg074ac8d2010-09-16 14:58:22 +0200436 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
437 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Samuel Ortizb23aa672009-07-01 21:26:54 +0200438 return;
439
Johannes Bergf7969962009-08-21 12:23:49 +0200440 if (wdev->sme_state != CFG80211_SME_CONNECTING)
Johannes Bergea416a72009-08-17 12:22:14 +0200441 return;
442
443 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
Johannes Berge45cd822009-07-02 09:58:04 +0200444 bssid, req_ie, req_ie_len,
Johannes Bergea416a72009-08-17 12:22:14 +0200445 resp_ie, resp_ie_len,
446 status, GFP_KERNEL);
Johannes Berge45cd822009-07-02 09:58:04 +0200447
Johannes Berg3d23e342009-09-29 23:27:28 +0200448#ifdef CONFIG_CFG80211_WEXT
Johannes Berge45cd822009-07-02 09:58:04 +0200449 if (wextev) {
450 if (req_ie && status == WLAN_STATUS_SUCCESS) {
451 memset(&wrqu, 0, sizeof(wrqu));
452 wrqu.data.length = req_ie_len;
Zhu Yi3409ff72009-07-20 11:47:44 +0800453 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
Johannes Berge45cd822009-07-02 09:58:04 +0200454 }
455
456 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
457 memset(&wrqu, 0, sizeof(wrqu));
458 wrqu.data.length = resp_ie_len;
459 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
460 }
461
462 memset(&wrqu, 0, sizeof(wrqu));
463 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200464 if (bssid && status == WLAN_STATUS_SUCCESS) {
Johannes Berge45cd822009-07-02 09:58:04 +0200465 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200466 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
467 wdev->wext.prev_bssid_valid = true;
468 }
Johannes Berge45cd822009-07-02 09:58:04 +0200469 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
470 }
471#endif
472
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200473 if (wdev->current_bss) {
474 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100475 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200476 wdev->current_bss = NULL;
477 }
478
Johannes Berg19957bb2009-07-02 17:20:43 +0200479 if (wdev->conn)
480 wdev->conn->state = CFG80211_CONN_IDLE;
481
Johannes Bergfffd0932009-07-08 14:22:54 +0200482 if (status != WLAN_STATUS_SUCCESS) {
Samuel Ortizb23aa672009-07-01 21:26:54 +0200483 wdev->sme_state = CFG80211_SME_IDLE;
David Kilroy415ad1ef2009-08-19 00:43:31 +0100484 if (wdev->conn)
485 kfree(wdev->conn->ie);
Johannes Berg19957bb2009-07-02 17:20:43 +0200486 kfree(wdev->conn);
487 wdev->conn = NULL;
Johannes Bergfffd0932009-07-08 14:22:54 +0200488 kfree(wdev->connect_keys);
489 wdev->connect_keys = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200490 wdev->ssid_len = 0;
Johannes Berg5b112d32013-02-01 01:49:58 +0100491 cfg80211_put_bss(wdev->wiphy, bss);
Johannes Bergfffd0932009-07-08 14:22:54 +0200492 return;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200493 }
Johannes Bergfffd0932009-07-08 14:22:54 +0200494
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200495 if (!bss)
Jouni Malinened9d0102011-05-16 19:40:15 +0300496 bss = cfg80211_get_bss(wdev->wiphy,
497 wdev->conn ? wdev->conn->params.channel :
498 NULL,
499 bssid,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200500 wdev->ssid, wdev->ssid_len,
501 WLAN_CAPABILITY_ESS,
502 WLAN_CAPABILITY_ESS);
Johannes Bergfffd0932009-07-08 14:22:54 +0200503
504 if (WARN_ON(!bss))
505 return;
506
507 cfg80211_hold_bss(bss_from_pub(bss));
508 wdev->current_bss = bss_from_pub(bss);
509
Johannes Bergfffd0932009-07-08 14:22:54 +0200510 wdev->sme_state = CFG80211_SME_CONNECTED;
511 cfg80211_upload_connect_keys(wdev);
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -0700512
Johannes Berg9caf0362012-11-29 01:25:20 +0100513 rcu_read_lock();
514 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
515 if (!country_ie) {
516 rcu_read_unlock();
517 return;
518 }
519
520 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
521 rcu_read_unlock();
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -0700522
523 if (!country_ie)
524 return;
525
526 /*
527 * ieee80211_bss_get_ie() ensures we can access:
528 * - country_ie + 2, the start of the country ie data, and
529 * - and country_ie[1] which is the IE length
530 */
Johannes Berg1a919312012-12-03 17:21:11 +0100531 regulatory_hint_11d(wdev->wiphy, bss->channel->band,
532 country_ie + 2, country_ie[1]);
Johannes Berg9caf0362012-11-29 01:25:20 +0100533 kfree(country_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200534}
Johannes Bergf2129352009-07-01 21:26:56 +0200535
536void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
537 const u8 *req_ie, size_t req_ie_len,
538 const u8 *resp_ie, size_t resp_ie_len,
539 u16 status, gfp_t gfp)
540{
Johannes Berg667503dd2009-07-07 03:56:11 +0200541 struct wireless_dev *wdev = dev->ieee80211_ptr;
542 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
543 struct cfg80211_event *ev;
544 unsigned long flags;
545
Johannes Bergf7969962009-08-21 12:23:49 +0200546 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
547
Johannes Berg667503dd2009-07-07 03:56:11 +0200548 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
549 if (!ev)
550 return;
551
552 ev->type = EVENT_CONNECT_RESULT;
Zhu Yi16a832e2009-08-19 16:08:22 +0800553 if (bssid)
554 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
Nishant Sarmukadam7834704b2010-04-14 22:03:02 -0700555 if (req_ie_len) {
556 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
557 ev->cr.req_ie_len = req_ie_len;
558 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
559 }
560 if (resp_ie_len) {
561 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
562 ev->cr.resp_ie_len = resp_ie_len;
563 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
564 }
Johannes Berg667503dd2009-07-07 03:56:11 +0200565 ev->cr.status = status;
566
567 spin_lock_irqsave(&wdev->event_lock, flags);
568 list_add_tail(&ev->list, &wdev->event_list);
569 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100570 queue_work(cfg80211_wq, &rdev->event_work);
Johannes Bergf2129352009-07-01 21:26:56 +0200571}
Samuel Ortizb23aa672009-07-01 21:26:54 +0200572EXPORT_SYMBOL(cfg80211_connect_result);
573
Jouni Malinened9d0102011-05-16 19:40:15 +0300574void __cfg80211_roamed(struct wireless_dev *wdev,
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530575 struct cfg80211_bss *bss,
Johannes Berg667503dd2009-07-07 03:56:11 +0200576 const u8 *req_ie, size_t req_ie_len,
577 const u8 *resp_ie, size_t resp_ie_len)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200578{
Johannes Berg3d23e342009-09-29 23:27:28 +0200579#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200580 union iwreq_data wrqu;
581#endif
Johannes Berg667503dd2009-07-07 03:56:11 +0200582 ASSERT_WDEV_LOCK(wdev);
583
Johannes Berg074ac8d2010-09-16 14:58:22 +0200584 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
585 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530586 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200587
Johannes Bergf7969962009-08-21 12:23:49 +0200588 if (wdev->sme_state != CFG80211_SME_CONNECTED)
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530589 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200590
591 /* internal error -- how did we get to CONNECTED w/o BSS? */
592 if (WARN_ON(!wdev->current_bss)) {
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530593 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200594 }
595
596 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100597 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200598 wdev->current_bss = NULL;
599
Johannes Berg19957bb2009-07-02 17:20:43 +0200600 cfg80211_hold_bss(bss_from_pub(bss));
601 wdev->current_bss = bss_from_pub(bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200602
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530603 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200604 req_ie, req_ie_len, resp_ie, resp_ie_len,
605 GFP_KERNEL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200606
Johannes Berg3d23e342009-09-29 23:27:28 +0200607#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200608 if (req_ie) {
609 memset(&wrqu, 0, sizeof(wrqu));
610 wrqu.data.length = req_ie_len;
Zhu Yi3409ff72009-07-20 11:47:44 +0800611 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
Johannes Berg667503dd2009-07-07 03:56:11 +0200612 &wrqu, req_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200613 }
614
615 if (resp_ie) {
616 memset(&wrqu, 0, sizeof(wrqu));
617 wrqu.data.length = resp_ie_len;
Johannes Berg667503dd2009-07-07 03:56:11 +0200618 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
619 &wrqu, resp_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200620 }
621
622 memset(&wrqu, 0, sizeof(wrqu));
623 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530624 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
625 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200626 wdev->wext.prev_bssid_valid = true;
Johannes Berg667503dd2009-07-07 03:56:11 +0200627 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200628#endif
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530629
630 return;
631out:
Johannes Berg5b112d32013-02-01 01:49:58 +0100632 cfg80211_put_bss(wdev->wiphy, bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200633}
Johannes Berg667503dd2009-07-07 03:56:11 +0200634
Jouni Malinened9d0102011-05-16 19:40:15 +0300635void cfg80211_roamed(struct net_device *dev,
636 struct ieee80211_channel *channel,
637 const u8 *bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200638 const u8 *req_ie, size_t req_ie_len,
639 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
640{
641 struct wireless_dev *wdev = dev->ieee80211_ptr;
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530642 struct cfg80211_bss *bss;
643
644 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
645
646 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
647 wdev->ssid_len, WLAN_CAPABILITY_ESS,
648 WLAN_CAPABILITY_ESS);
649 if (WARN_ON(!bss))
650 return;
651
652 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
653 resp_ie_len, gfp);
654}
655EXPORT_SYMBOL(cfg80211_roamed);
656
657void cfg80211_roamed_bss(struct net_device *dev,
658 struct cfg80211_bss *bss, const u8 *req_ie,
659 size_t req_ie_len, const u8 *resp_ie,
660 size_t resp_ie_len, gfp_t gfp)
661{
662 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg667503dd2009-07-07 03:56:11 +0200663 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
664 struct cfg80211_event *ev;
665 unsigned long flags;
666
Johannes Bergf7969962009-08-21 12:23:49 +0200667 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
668
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530669 if (WARN_ON(!bss))
Johannes Berg667503dd2009-07-07 03:56:11 +0200670 return;
671
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530672 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
673 if (!ev) {
Johannes Berg5b112d32013-02-01 01:49:58 +0100674 cfg80211_put_bss(wdev->wiphy, bss);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530675 return;
676 }
677
Johannes Berg667503dd2009-07-07 03:56:11 +0200678 ev->type = EVENT_ROAMED;
Johannes Berg667503dd2009-07-07 03:56:11 +0200679 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
680 ev->rm.req_ie_len = req_ie_len;
681 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
682 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
683 ev->rm.resp_ie_len = resp_ie_len;
684 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530685 ev->rm.bss = bss;
Johannes Berg667503dd2009-07-07 03:56:11 +0200686
687 spin_lock_irqsave(&wdev->event_lock, flags);
688 list_add_tail(&ev->list, &wdev->event_list);
689 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100690 queue_work(cfg80211_wq, &rdev->event_work);
Johannes Berg667503dd2009-07-07 03:56:11 +0200691}
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530692EXPORT_SYMBOL(cfg80211_roamed_bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200693
Johannes Berg667503dd2009-07-07 03:56:11 +0200694void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
Johannes Berg6829c872009-07-02 09:13:27 +0200695 size_t ie_len, u16 reason, bool from_ap)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200696{
697 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Bergfffd0932009-07-08 14:22:54 +0200698 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
699 int i;
Johannes Berg3d23e342009-09-29 23:27:28 +0200700#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200701 union iwreq_data wrqu;
702#endif
703
Johannes Berg667503dd2009-07-07 03:56:11 +0200704 ASSERT_WDEV_LOCK(wdev);
705
Johannes Berg074ac8d2010-09-16 14:58:22 +0200706 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
707 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Samuel Ortizb23aa672009-07-01 21:26:54 +0200708 return;
709
Johannes Bergf7969962009-08-21 12:23:49 +0200710 if (wdev->sme_state != CFG80211_SME_CONNECTED)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200711 return;
712
713 if (wdev->current_bss) {
714 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100715 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200716 }
717
718 wdev->current_bss = NULL;
719 wdev->sme_state = CFG80211_SME_IDLE;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200720 wdev->ssid_len = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200721
Johannes Berg6829c872009-07-02 09:13:27 +0200722 if (wdev->conn) {
723 kfree(wdev->conn->ie);
724 wdev->conn->ie = NULL;
Johannes Berg19957bb2009-07-02 17:20:43 +0200725 kfree(wdev->conn);
726 wdev->conn = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200727 }
728
Johannes Bergfffd0932009-07-08 14:22:54 +0200729 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
730
731 /*
732 * Delete all the keys ... pairwise keys can't really
733 * exist any more anyway, but default keys might.
734 */
735 if (rdev->ops->del_key)
736 for (i = 0; i < 6; i++)
Hila Gonene35e4d22012-06-27 17:19:42 +0300737 rdev_del_key(rdev, dev, i, false, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200738
Johannes Berg3d23e342009-09-29 23:27:28 +0200739#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200740 memset(&wrqu, 0, sizeof(wrqu));
741 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
742 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
Abhijeet Kolekar5f612032010-01-13 13:23:14 -0800743 wdev->wext.connect.ssid_len = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200744#endif
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -0500745
746 schedule_work(&cfg80211_disconnect_work);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200747}
748
749void cfg80211_disconnected(struct net_device *dev, u16 reason,
750 u8 *ie, size_t ie_len, gfp_t gfp)
751{
Johannes Berg667503dd2009-07-07 03:56:11 +0200752 struct wireless_dev *wdev = dev->ieee80211_ptr;
753 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
754 struct cfg80211_event *ev;
755 unsigned long flags;
756
Johannes Bergf7969962009-08-21 12:23:49 +0200757 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
758
Johannes Berg667503dd2009-07-07 03:56:11 +0200759 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
760 if (!ev)
761 return;
762
763 ev->type = EVENT_DISCONNECTED;
764 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
765 ev->dc.ie_len = ie_len;
766 memcpy((void *)ev->dc.ie, ie, ie_len);
767 ev->dc.reason = reason;
768
769 spin_lock_irqsave(&wdev->event_lock, flags);
770 list_add_tail(&ev->list, &wdev->event_list);
771 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100772 queue_work(cfg80211_wq, &rdev->event_work);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200773}
774EXPORT_SYMBOL(cfg80211_disconnected);
775
Johannes Berg667503dd2009-07-07 03:56:11 +0200776int __cfg80211_connect(struct cfg80211_registered_device *rdev,
777 struct net_device *dev,
Johannes Bergfffd0932009-07-08 14:22:54 +0200778 struct cfg80211_connect_params *connect,
Johannes Bergf401a6f2009-08-07 14:51:05 +0200779 struct cfg80211_cached_keys *connkeys,
780 const u8 *prev_bssid)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200781{
Samuel Ortizb23aa672009-07-01 21:26:54 +0200782 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Bergbbac31f2009-09-16 09:04:26 -0700783 struct cfg80211_bss *bss = NULL;
Johannes Berg667503dd2009-07-07 03:56:11 +0200784 int err;
785
786 ASSERT_WDEV_LOCK(wdev);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200787
788 if (wdev->sme_state != CFG80211_SME_IDLE)
789 return -EALREADY;
790
Johannes Bergfffd0932009-07-08 14:22:54 +0200791 if (WARN_ON(wdev->connect_keys)) {
792 kfree(wdev->connect_keys);
793 wdev->connect_keys = NULL;
794 }
795
Ben Greear7e7c8922011-11-18 11:31:59 -0800796 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
797 rdev->wiphy.ht_capa_mod_mask);
798
Johannes Bergfffd0932009-07-08 14:22:54 +0200799 if (connkeys && connkeys->def >= 0) {
800 int idx;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200801 u32 cipher;
Johannes Bergfffd0932009-07-08 14:22:54 +0200802
803 idx = connkeys->def;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200804 cipher = connkeys->params[idx].cipher;
Johannes Bergfffd0932009-07-08 14:22:54 +0200805 /* If given a WEP key we may need it for shared key auth */
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200806 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
807 cipher == WLAN_CIPHER_SUITE_WEP104) {
Johannes Bergfffd0932009-07-08 14:22:54 +0200808 connect->key_idx = idx;
809 connect->key = connkeys->params[idx].key;
810 connect->key_len = connkeys->params[idx].key_len;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200811
812 /*
813 * If ciphers are not set (e.g. when going through
814 * iwconfig), we have to set them appropriately here.
815 */
816 if (connect->crypto.cipher_group == 0)
817 connect->crypto.cipher_group = cipher;
818
819 if (connect->crypto.n_ciphers_pairwise == 0) {
820 connect->crypto.n_ciphers_pairwise = 1;
821 connect->crypto.ciphers_pairwise[0] = cipher;
822 }
Johannes Bergfffd0932009-07-08 14:22:54 +0200823 }
824 }
825
Samuel Ortizb23aa672009-07-01 21:26:54 +0200826 if (!rdev->ops->connect) {
Johannes Berg6829c872009-07-02 09:13:27 +0200827 if (!rdev->ops->auth || !rdev->ops->assoc)
828 return -EOPNOTSUPP;
829
Johannes Berg19957bb2009-07-02 17:20:43 +0200830 if (WARN_ON(wdev->conn))
831 return -EINPROGRESS;
832
833 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
834 if (!wdev->conn)
835 return -ENOMEM;
Johannes Berg6829c872009-07-02 09:13:27 +0200836
837 /*
838 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
839 */
840 memcpy(&wdev->conn->params, connect, sizeof(*connect));
841 if (connect->bssid) {
842 wdev->conn->params.bssid = wdev->conn->bssid;
843 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
844 }
845
846 if (connect->ie) {
847 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
848 GFP_KERNEL);
849 wdev->conn->params.ie = wdev->conn->ie;
Johannes Berg19957bb2009-07-02 17:20:43 +0200850 if (!wdev->conn->ie) {
851 kfree(wdev->conn);
852 wdev->conn = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200853 return -ENOMEM;
Johannes Berg19957bb2009-07-02 17:20:43 +0200854 }
Johannes Berg6829c872009-07-02 09:13:27 +0200855 }
856
857 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
858 wdev->conn->auto_auth = true;
859 /* start with open system ... should mostly work */
860 wdev->conn->params.auth_type =
861 NL80211_AUTHTYPE_OPEN_SYSTEM;
862 } else {
863 wdev->conn->auto_auth = false;
864 }
865
866 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
867 wdev->ssid_len = connect->ssid_len;
868 wdev->conn->params.ssid = wdev->ssid;
869 wdev->conn->params.ssid_len = connect->ssid_len;
870
Johannes Berg8bb89482009-09-26 14:42:53 +0200871 /* see if we have the bss already */
872 bss = cfg80211_get_conn_bss(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200873
874 wdev->sme_state = CFG80211_SME_CONNECTING;
Johannes Bergfffd0932009-07-08 14:22:54 +0200875 wdev->connect_keys = connkeys;
Johannes Berg6829c872009-07-02 09:13:27 +0200876
Johannes Bergf401a6f2009-08-07 14:51:05 +0200877 if (prev_bssid) {
878 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
879 wdev->conn->prev_bssid_valid = true;
880 }
881
Johannes Bergbbac31f2009-09-16 09:04:26 -0700882 /* we're good if we have a matching bss struct */
883 if (bss) {
Johannes Berg6829c872009-07-02 09:13:27 +0200884 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
885 err = cfg80211_conn_do_work(wdev);
Johannes Berg5b112d32013-02-01 01:49:58 +0100886 cfg80211_put_bss(wdev->wiphy, bss);
Johannes Berg6829c872009-07-02 09:13:27 +0200887 } else {
888 /* otherwise we'll need to scan for the AP first */
889 err = cfg80211_conn_scan(wdev);
890 /*
891 * If we can't scan right now, then we need to scan again
892 * after the current scan finished, since the parameters
893 * changed (unless we find a good AP anyway).
894 */
895 if (err == -EBUSY) {
896 err = 0;
897 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
898 }
899 }
Johannes Berg19957bb2009-07-02 17:20:43 +0200900 if (err) {
David Kilroy415ad1ef2009-08-19 00:43:31 +0100901 kfree(wdev->conn->ie);
Johannes Berg19957bb2009-07-02 17:20:43 +0200902 kfree(wdev->conn);
903 wdev->conn = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200904 wdev->sme_state = CFG80211_SME_IDLE;
Johannes Bergfffd0932009-07-08 14:22:54 +0200905 wdev->connect_keys = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200906 wdev->ssid_len = 0;
Johannes Berg19957bb2009-07-02 17:20:43 +0200907 }
Johannes Berg6829c872009-07-02 09:13:27 +0200908
909 return err;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200910 } else {
911 wdev->sme_state = CFG80211_SME_CONNECTING;
Johannes Bergfffd0932009-07-08 14:22:54 +0200912 wdev->connect_keys = connkeys;
Hila Gonene35e4d22012-06-27 17:19:42 +0300913 err = rdev_connect(rdev, dev, connect);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200914 if (err) {
Johannes Bergfffd0932009-07-08 14:22:54 +0200915 wdev->connect_keys = NULL;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200916 wdev->sme_state = CFG80211_SME_IDLE;
917 return err;
918 }
Johannes Berg6829c872009-07-02 09:13:27 +0200919
920 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
921 wdev->ssid_len = connect->ssid_len;
922
923 return 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200924 }
Samuel Ortizb23aa672009-07-01 21:26:54 +0200925}
926
Johannes Berg667503dd2009-07-07 03:56:11 +0200927int cfg80211_connect(struct cfg80211_registered_device *rdev,
928 struct net_device *dev,
Johannes Bergfffd0932009-07-08 14:22:54 +0200929 struct cfg80211_connect_params *connect,
930 struct cfg80211_cached_keys *connkeys)
Johannes Berg667503dd2009-07-07 03:56:11 +0200931{
932 int err;
933
Johannes Berg59bbb6f2009-08-07 17:22:35 +0200934 mutex_lock(&rdev->devlist_mtx);
Johannes Bergf9f47522013-03-19 15:04:07 +0100935 /* might request scan - scan_mtx -> wdev_mtx dependency */
936 mutex_lock(&rdev->sched_scan_mtx);
Johannes Berg667503dd2009-07-07 03:56:11 +0200937 wdev_lock(dev->ieee80211_ptr);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200938 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
Johannes Berg667503dd2009-07-07 03:56:11 +0200939 wdev_unlock(dev->ieee80211_ptr);
Johannes Bergf9f47522013-03-19 15:04:07 +0100940 mutex_unlock(&rdev->sched_scan_mtx);
Johannes Berg59bbb6f2009-08-07 17:22:35 +0200941 mutex_unlock(&rdev->devlist_mtx);
Johannes Berg667503dd2009-07-07 03:56:11 +0200942
943 return err;
944}
945
946int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
947 struct net_device *dev, u16 reason, bool wextev)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200948{
Johannes Berg6829c872009-07-02 09:13:27 +0200949 struct wireless_dev *wdev = dev->ieee80211_ptr;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200950 int err;
951
Johannes Berg667503dd2009-07-07 03:56:11 +0200952 ASSERT_WDEV_LOCK(wdev);
953
Johannes Berg6829c872009-07-02 09:13:27 +0200954 if (wdev->sme_state == CFG80211_SME_IDLE)
955 return -EINVAL;
956
Johannes Bergfffd0932009-07-08 14:22:54 +0200957 kfree(wdev->connect_keys);
958 wdev->connect_keys = NULL;
959
Samuel Ortizb23aa672009-07-01 21:26:54 +0200960 if (!rdev->ops->disconnect) {
Johannes Berg19957bb2009-07-02 17:20:43 +0200961 if (!rdev->ops->deauth)
962 return -EOPNOTSUPP;
Johannes Berg6829c872009-07-02 09:13:27 +0200963
Johannes Berg19957bb2009-07-02 17:20:43 +0200964 /* was it connected by userspace SME? */
965 if (!wdev->conn) {
966 cfg80211_mlme_down(rdev, dev);
Johannes Berg24308162013-05-14 09:19:53 +0200967 goto disconnect;
Johannes Berg19957bb2009-07-02 17:20:43 +0200968 }
Johannes Berg6829c872009-07-02 09:13:27 +0200969
970 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
971 (wdev->conn->state == CFG80211_CONN_SCANNING ||
972 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
973 wdev->sme_state = CFG80211_SME_IDLE;
David Kilroy415ad1ef2009-08-19 00:43:31 +0100974 kfree(wdev->conn->ie);
Johannes Berg19957bb2009-07-02 17:20:43 +0200975 kfree(wdev->conn);
976 wdev->conn = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200977 wdev->ssid_len = 0;
Johannes Berg6829c872009-07-02 09:13:27 +0200978 return 0;
979 }
980
Johannes Berg6829c872009-07-02 09:13:27 +0200981 /* wdev->conn->params.bssid must be set if > SCANNING */
Johannes Berg667503dd2009-07-07 03:56:11 +0200982 err = __cfg80211_mlme_deauth(rdev, dev,
983 wdev->conn->params.bssid,
Jouni Malinend5cdfac2010-04-04 09:37:19 +0300984 NULL, 0, reason, false);
Johannes Berg6829c872009-07-02 09:13:27 +0200985 if (err)
986 return err;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200987 } else {
Hila Gonene35e4d22012-06-27 17:19:42 +0300988 err = rdev_disconnect(rdev, dev, reason);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200989 if (err)
990 return err;
991 }
992
Johannes Berg24308162013-05-14 09:19:53 +0200993 disconnect:
Johannes Berg6829c872009-07-02 09:13:27 +0200994 if (wdev->sme_state == CFG80211_SME_CONNECTED)
Johannes Berg667503dd2009-07-07 03:56:11 +0200995 __cfg80211_disconnected(dev, NULL, 0, 0, false);
Johannes Berg6829c872009-07-02 09:13:27 +0200996 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
Johannes Bergf2129352009-07-01 21:26:56 +0200997 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
998 WLAN_STATUS_UNSPECIFIED_FAILURE,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200999 wextev, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +02001000
1001 return 0;
1002}
Johannes Berg19957bb2009-07-02 17:20:43 +02001003
Johannes Berg667503dd2009-07-07 03:56:11 +02001004int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1005 struct net_device *dev,
1006 u16 reason, bool wextev)
1007{
1008 int err;
1009
1010 wdev_lock(dev->ieee80211_ptr);
1011 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
1012 wdev_unlock(dev->ieee80211_ptr);
1013
1014 return err;
1015}
1016
Johannes Berg95de8172012-01-20 13:55:25 +01001017void cfg80211_sme_disassoc(struct net_device *dev,
1018 struct cfg80211_internal_bss *bss)
Johannes Berg19957bb2009-07-02 17:20:43 +02001019{
1020 struct wireless_dev *wdev = dev->ieee80211_ptr;
1021 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1022 u8 bssid[ETH_ALEN];
1023
Johannes Berg667503dd2009-07-07 03:56:11 +02001024 ASSERT_WDEV_LOCK(wdev);
1025
Johannes Berg19957bb2009-07-02 17:20:43 +02001026 if (!wdev->conn)
1027 return;
1028
1029 if (wdev->conn->state == CFG80211_CONN_IDLE)
1030 return;
1031
1032 /*
1033 * Ok, so the association was made by this SME -- we don't
1034 * want it any more so deauthenticate too.
1035 */
1036
Johannes Berg95de8172012-01-20 13:55:25 +01001037 memcpy(bssid, bss->pub.bssid, ETH_ALEN);
Johannes Berg19957bb2009-07-02 17:20:43 +02001038
Johannes Berg95de8172012-01-20 13:55:25 +01001039 __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
1040 WLAN_REASON_DEAUTH_LEAVING, false);
Johannes Berg19957bb2009-07-02 17:20:43 +02001041}