blob: 5445581717874e1409d994f24c9ca7263e62ab38 [file] [log] [blame]
Samuel Ortizb23aa672009-07-01 21:26:54 +02001/*
Johannes Bergceca7b72013-05-16 00:55:45 +02002 * SME code for cfg80211
3 * both driver SME event handling and the SME implementation
4 * (for nl80211's connect() and wext)
Samuel Ortizb23aa672009-07-01 21:26:54 +02005 *
6 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (C) 2009 Intel Corporation. All rights reserved.
8 */
9
10#include <linux/etherdevice.h>
11#include <linux/if_arp.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090012#include <linux/slab.h>
Samuel Ortizb23aa672009-07-01 21:26:54 +020013#include <linux/workqueue.h>
Johannes Berga9a11622009-07-27 12:01:53 +020014#include <linux/wireless.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040015#include <linux/export.h>
Johannes Berga9a11622009-07-27 12:01:53 +020016#include <net/iw_handler.h>
Samuel Ortizb23aa672009-07-01 21:26:54 +020017#include <net/cfg80211.h>
18#include <net/rtnetlink.h>
19#include "nl80211.h"
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070020#include "reg.h"
Hila Gonene35e4d22012-06-27 17:19:42 +030021#include "rdev-ops.h"
Samuel Ortizb23aa672009-07-01 21:26:54 +020022
Johannes Bergceca7b72013-05-16 00:55:45 +020023/*
24 * Software SME in cfg80211, using auth/assoc/deauth calls to the
25 * driver. This is is for implementing nl80211's connect/disconnect
26 * and wireless extensions (if configured.)
27 */
28
Johannes Berg6829c872009-07-02 09:13:27 +020029struct cfg80211_conn {
30 struct cfg80211_connect_params params;
31 /* these are sub-states of the _CONNECTING sme_state */
32 enum {
Johannes Berg6829c872009-07-02 09:13:27 +020033 CFG80211_CONN_SCANNING,
34 CFG80211_CONN_SCAN_AGAIN,
35 CFG80211_CONN_AUTHENTICATE_NEXT,
36 CFG80211_CONN_AUTHENTICATING,
Johannes Berg923a0e72013-06-28 11:38:54 +020037 CFG80211_CONN_AUTH_FAILED,
Johannes Berg6829c872009-07-02 09:13:27 +020038 CFG80211_CONN_ASSOCIATE_NEXT,
39 CFG80211_CONN_ASSOCIATING,
Johannes Berg923a0e72013-06-28 11:38:54 +020040 CFG80211_CONN_ASSOC_FAILED,
Johannes Bergceca7b72013-05-16 00:55:45 +020041 CFG80211_CONN_DEAUTH,
42 CFG80211_CONN_CONNECTED,
Johannes Berg6829c872009-07-02 09:13:27 +020043 } state;
Johannes Bergf401a6f2009-08-07 14:51:05 +020044 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
Johannes Berg46b9d182015-03-31 16:09:13 +020045 const u8 *ie;
Johannes Berg6829c872009-07-02 09:13:27 +020046 size_t ie_len;
Johannes Bergf401a6f2009-08-07 14:51:05 +020047 bool auto_auth, prev_bssid_valid;
Johannes Berg6829c872009-07-02 09:13:27 +020048};
49
Johannes Bergceca7b72013-05-16 00:55:45 +020050static void cfg80211_sme_free(struct wireless_dev *wdev)
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050051{
Johannes Bergceca7b72013-05-16 00:55:45 +020052 if (!wdev->conn)
53 return;
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050054
Johannes Bergceca7b72013-05-16 00:55:45 +020055 kfree(wdev->conn->ie);
56 kfree(wdev->conn);
57 wdev->conn = NULL;
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050058}
59
Johannes Berg6829c872009-07-02 09:13:27 +020060static int cfg80211_conn_scan(struct wireless_dev *wdev)
61{
Zhao, Gangf26cbf42014-04-21 12:53:03 +080062 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +020063 struct cfg80211_scan_request *request;
64 int n_channels, err;
65
66 ASSERT_RTNL();
Johannes Berg667503dd2009-07-07 03:56:11 +020067 ASSERT_WDEV_LOCK(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +020068
Johannes Bergf9d15d12014-01-22 11:14:19 +020069 if (rdev->scan_req || rdev->scan_msg)
Johannes Berg6829c872009-07-02 09:13:27 +020070 return -EBUSY;
71
Ilan Peerbdfbec22014-01-09 11:37:23 +020072 if (wdev->conn->params.channel)
Johannes Berg6829c872009-07-02 09:13:27 +020073 n_channels = 1;
Ilan Peerbdfbec22014-01-09 11:37:23 +020074 else
75 n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +020076
Johannes Berg6829c872009-07-02 09:13:27 +020077 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
78 sizeof(request->channels[0]) * n_channels,
79 GFP_KERNEL);
80 if (!request)
81 return -ENOMEM;
82
Karl Beldan2a84ee82014-10-07 11:42:18 +020083 if (wdev->conn->params.channel) {
84 enum ieee80211_band band = wdev->conn->params.channel->band;
85 struct ieee80211_supported_band *sband =
86 wdev->wiphy->bands[band];
87
88 if (!sband) {
89 kfree(request);
90 return -EINVAL;
91 }
Johannes Berg6829c872009-07-02 09:13:27 +020092 request->channels[0] = wdev->conn->params.channel;
Karl Beldan2a84ee82014-10-07 11:42:18 +020093 request->rates[band] = (1 << sband->n_bitrates) - 1;
94 } else {
Johannes Berg6829c872009-07-02 09:13:27 +020095 int i = 0, j;
96 enum ieee80211_band band;
Rajkumar Manoharane3081502011-09-15 17:40:50 +053097 struct ieee80211_supported_band *bands;
98 struct ieee80211_channel *channel;
Johannes Berg6829c872009-07-02 09:13:27 +020099
100 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530101 bands = wdev->wiphy->bands[band];
102 if (!bands)
Johannes Berg6829c872009-07-02 09:13:27 +0200103 continue;
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530104 for (j = 0; j < bands->n_channels; j++) {
105 channel = &bands->channels[j];
106 if (channel->flags & IEEE80211_CHAN_DISABLED)
107 continue;
108 request->channels[i++] = channel;
109 }
110 request->rates[band] = (1 << bands->n_bitrates) - 1;
Johannes Berg6829c872009-07-02 09:13:27 +0200111 }
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530112 n_channels = i;
Johannes Berg6829c872009-07-02 09:13:27 +0200113 }
114 request->n_channels = n_channels;
Johannes Berg5ba63532009-08-07 17:54:07 +0200115 request->ssids = (void *)&request->channels[n_channels];
Johannes Berg6829c872009-07-02 09:13:27 +0200116 request->n_ssids = 1;
117
118 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
119 wdev->conn->params.ssid_len);
120 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
121
Johannes Bergfd014282012-06-18 19:17:03 +0200122 request->wdev = wdev;
Johannes Berg79c97e92009-07-07 03:56:12 +0200123 request->wiphy = &rdev->wiphy;
Sam Leffler15d60302012-10-11 21:03:34 -0700124 request->scan_start = jiffies;
Johannes Berg6829c872009-07-02 09:13:27 +0200125
Johannes Berg79c97e92009-07-07 03:56:12 +0200126 rdev->scan_req = request;
Johannes Berg6829c872009-07-02 09:13:27 +0200127
Hila Gonene35e4d22012-06-27 17:19:42 +0300128 err = rdev_scan(rdev, request);
Johannes Berg6829c872009-07-02 09:13:27 +0200129 if (!err) {
130 wdev->conn->state = CFG80211_CONN_SCANNING;
Johannes Bergfd014282012-06-18 19:17:03 +0200131 nl80211_send_scan_start(rdev, wdev);
Johannes Berg463d0182009-07-14 00:33:35 +0200132 dev_hold(wdev->netdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200133 } else {
Johannes Berg79c97e92009-07-07 03:56:12 +0200134 rdev->scan_req = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200135 kfree(request);
136 }
137 return err;
138}
139
140static int cfg80211_conn_do_work(struct wireless_dev *wdev)
141{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800142 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg19957bb2009-07-02 17:20:43 +0200143 struct cfg80211_connect_params *params;
Johannes Bergf62fab72013-02-21 20:09:09 +0100144 struct cfg80211_assoc_request req = {};
Johannes Berg19957bb2009-07-02 17:20:43 +0200145 int err;
Johannes Berg6829c872009-07-02 09:13:27 +0200146
Johannes Berg667503dd2009-07-07 03:56:11 +0200147 ASSERT_WDEV_LOCK(wdev);
148
Johannes Berg6829c872009-07-02 09:13:27 +0200149 if (!wdev->conn)
150 return 0;
151
Johannes Berg19957bb2009-07-02 17:20:43 +0200152 params = &wdev->conn->params;
153
Johannes Berg6829c872009-07-02 09:13:27 +0200154 switch (wdev->conn->state) {
Johannes Bergceca7b72013-05-16 00:55:45 +0200155 case CFG80211_CONN_SCANNING:
156 /* didn't find it during scan ... */
157 return -ENOENT;
Johannes Berg6829c872009-07-02 09:13:27 +0200158 case CFG80211_CONN_SCAN_AGAIN:
159 return cfg80211_conn_scan(wdev);
160 case CFG80211_CONN_AUTHENTICATE_NEXT:
Johannes Berg2fd05112014-04-29 17:52:36 +0200161 if (WARN_ON(!rdev->ops->auth))
162 return -EOPNOTSUPP;
Johannes Berg19957bb2009-07-02 17:20:43 +0200163 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
Johannes Berg91bf9b22013-05-15 17:44:01 +0200164 return cfg80211_mlme_auth(rdev, wdev->netdev,
165 params->channel, params->auth_type,
166 params->bssid,
167 params->ssid, params->ssid_len,
168 NULL, 0,
169 params->key, params->key_len,
170 params->key_idx, NULL, 0);
Johannes Berg923a0e72013-06-28 11:38:54 +0200171 case CFG80211_CONN_AUTH_FAILED:
172 return -ENOTCONN;
Johannes Berg6829c872009-07-02 09:13:27 +0200173 case CFG80211_CONN_ASSOCIATE_NEXT:
Johannes Berg2fd05112014-04-29 17:52:36 +0200174 if (WARN_ON(!rdev->ops->assoc))
175 return -EOPNOTSUPP;
Johannes Berg19957bb2009-07-02 17:20:43 +0200176 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200177 if (wdev->conn->prev_bssid_valid)
Johannes Bergf62fab72013-02-21 20:09:09 +0100178 req.prev_bssid = wdev->conn->prev_bssid;
179 req.ie = params->ie;
180 req.ie_len = params->ie_len;
181 req.use_mfp = params->mfp != NL80211_MFP_NO;
182 req.crypto = params->crypto;
183 req.flags = params->flags;
184 req.ht_capa = params->ht_capa;
185 req.ht_capa_mask = params->ht_capa_mask;
186 req.vht_capa = params->vht_capa;
187 req.vht_capa_mask = params->vht_capa_mask;
188
Johannes Berg91bf9b22013-05-15 17:44:01 +0200189 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
190 params->bssid, params->ssid,
191 params->ssid_len, &req);
Johannes Berg19957bb2009-07-02 17:20:43 +0200192 if (err)
Johannes Berg91bf9b22013-05-15 17:44:01 +0200193 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
194 NULL, 0,
195 WLAN_REASON_DEAUTH_LEAVING,
196 false);
Johannes Berg19957bb2009-07-02 17:20:43 +0200197 return err;
Johannes Berg923a0e72013-06-28 11:38:54 +0200198 case CFG80211_CONN_ASSOC_FAILED:
199 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
200 NULL, 0,
201 WLAN_REASON_DEAUTH_LEAVING, false);
202 return -ENOTCONN;
Johannes Bergceca7b72013-05-16 00:55:45 +0200203 case CFG80211_CONN_DEAUTH:
Johannes Berg91bf9b22013-05-15 17:44:01 +0200204 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
205 NULL, 0,
206 WLAN_REASON_DEAUTH_LEAVING, false);
Johannes Berg923a0e72013-06-28 11:38:54 +0200207 /* free directly, disconnected event already sent */
208 cfg80211_sme_free(wdev);
Johannes Bergceca7b72013-05-16 00:55:45 +0200209 return 0;
Johannes Berg6829c872009-07-02 09:13:27 +0200210 default:
211 return 0;
212 }
213}
214
215void cfg80211_conn_work(struct work_struct *work)
216{
Johannes Berg79c97e92009-07-07 03:56:12 +0200217 struct cfg80211_registered_device *rdev =
Johannes Berg6829c872009-07-02 09:13:27 +0200218 container_of(work, struct cfg80211_registered_device, conn_work);
219 struct wireless_dev *wdev;
Johannes Berg7400f422009-10-31 07:40:37 +0100220 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200221
222 rtnl_lock();
Johannes Berg6829c872009-07-02 09:13:27 +0200223
Johannes Berg89a54e42012-06-15 14:33:17 +0200224 list_for_each_entry(wdev, &rdev->wdev_list, list) {
Johannes Bergc8157972013-05-23 18:10:21 +0200225 if (!wdev->netdev)
226 continue;
227
Johannes Berg667503dd2009-07-07 03:56:11 +0200228 wdev_lock(wdev);
229 if (!netif_running(wdev->netdev)) {
230 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200231 continue;
Johannes Berg667503dd2009-07-07 03:56:11 +0200232 }
Johannes Bergceca7b72013-05-16 00:55:45 +0200233 if (!wdev->conn ||
234 wdev->conn->state == CFG80211_CONN_CONNECTED) {
Johannes Berg667503dd2009-07-07 03:56:11 +0200235 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200236 continue;
Johannes Berg667503dd2009-07-07 03:56:11 +0200237 }
Johannes Berg7400f422009-10-31 07:40:37 +0100238 if (wdev->conn->params.bssid) {
239 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
240 bssid = bssid_buf;
241 }
Johannes Bergceca7b72013-05-16 00:55:45 +0200242 if (cfg80211_conn_do_work(wdev)) {
Johannes Berg667503dd2009-07-07 03:56:11 +0200243 __cfg80211_connect_result(
Johannes Berg7d930bc2009-10-20 15:08:53 +0900244 wdev->netdev, bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200245 NULL, 0, NULL, 0,
246 WLAN_STATUS_UNSPECIFIED_FAILURE,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200247 false, NULL);
Johannes Bergceca7b72013-05-16 00:55:45 +0200248 }
Johannes Berg667503dd2009-07-07 03:56:11 +0200249 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200250 }
251
Johannes Berg6829c872009-07-02 09:13:27 +0200252 rtnl_unlock();
253}
254
Ben Greear0e3a39b2013-06-19 14:06:27 -0700255/* Returned bss is reference counted and must be cleaned up appropriately. */
Johannes Bergbbac31f2009-09-16 09:04:26 -0700256static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
Johannes Berg6829c872009-07-02 09:13:27 +0200257{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800258 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +0200259 struct cfg80211_bss *bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200260
Johannes Berg667503dd2009-07-07 03:56:11 +0200261 ASSERT_WDEV_LOCK(wdev);
262
Jouni Malinened9d0102011-05-16 19:40:15 +0300263 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
264 wdev->conn->params.bssid,
Johannes Berg6829c872009-07-02 09:13:27 +0200265 wdev->conn->params.ssid,
266 wdev->conn->params.ssid_len,
Lior David34d50512016-01-28 10:58:25 +0200267 wdev->conn_bss_type,
Dedy Lansky6eb18132015-02-08 15:52:03 +0200268 IEEE80211_PRIVACY(wdev->conn->params.privacy));
Johannes Berg6829c872009-07-02 09:13:27 +0200269 if (!bss)
Johannes Bergbbac31f2009-09-16 09:04:26 -0700270 return NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200271
272 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
273 wdev->conn->params.bssid = wdev->conn->bssid;
274 wdev->conn->params.channel = bss->channel;
275 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
Johannes Berg79c97e92009-07-07 03:56:12 +0200276 schedule_work(&rdev->conn_work);
Johannes Berg6829c872009-07-02 09:13:27 +0200277
Johannes Bergbbac31f2009-09-16 09:04:26 -0700278 return bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200279}
280
Johannes Berg667503dd2009-07-07 03:56:11 +0200281static void __cfg80211_sme_scan_done(struct net_device *dev)
Johannes Berg6829c872009-07-02 09:13:27 +0200282{
283 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergbbac31f2009-09-16 09:04:26 -0700285 struct cfg80211_bss *bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200286
Johannes Berg667503dd2009-07-07 03:56:11 +0200287 ASSERT_WDEV_LOCK(wdev);
288
Zhu Yid4b1a682009-07-16 17:34:14 +0800289 if (!wdev->conn)
Johannes Berg6829c872009-07-02 09:13:27 +0200290 return;
291
292 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
293 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
294 return;
295
Johannes Bergbbac31f2009-09-16 09:04:26 -0700296 bss = cfg80211_get_conn_bss(wdev);
Johannes Bergceca7b72013-05-16 00:55:45 +0200297 if (bss)
Johannes Berg5b112d32013-02-01 01:49:58 +0100298 cfg80211_put_bss(&rdev->wiphy, bss);
Johannes Bergceca7b72013-05-16 00:55:45 +0200299 else
300 schedule_work(&rdev->conn_work);
Johannes Berg6829c872009-07-02 09:13:27 +0200301}
302
Johannes Berg667503dd2009-07-07 03:56:11 +0200303void cfg80211_sme_scan_done(struct net_device *dev)
304{
305 struct wireless_dev *wdev = dev->ieee80211_ptr;
306
307 wdev_lock(wdev);
308 __cfg80211_sme_scan_done(dev);
309 wdev_unlock(wdev);
310}
311
Johannes Bergceca7b72013-05-16 00:55:45 +0200312void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
Johannes Berg6829c872009-07-02 09:13:27 +0200313{
Johannes Berg6829c872009-07-02 09:13:27 +0200314 struct wiphy *wiphy = wdev->wiphy;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800315 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +0200316 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
317 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
318
Johannes Berg667503dd2009-07-07 03:56:11 +0200319 ASSERT_WDEV_LOCK(wdev);
320
Johannes Bergceca7b72013-05-16 00:55:45 +0200321 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
Johannes Berg6829c872009-07-02 09:13:27 +0200322 return;
323
324 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
325 wdev->conn->auto_auth &&
326 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
327 /* select automatically between only open, shared, leap */
328 switch (wdev->conn->params.auth_type) {
329 case NL80211_AUTHTYPE_OPEN_SYSTEM:
Johannes Bergfffd0932009-07-08 14:22:54 +0200330 if (wdev->connect_keys)
331 wdev->conn->params.auth_type =
332 NL80211_AUTHTYPE_SHARED_KEY;
333 else
334 wdev->conn->params.auth_type =
335 NL80211_AUTHTYPE_NETWORK_EAP;
Johannes Berg6829c872009-07-02 09:13:27 +0200336 break;
337 case NL80211_AUTHTYPE_SHARED_KEY:
338 wdev->conn->params.auth_type =
339 NL80211_AUTHTYPE_NETWORK_EAP;
340 break;
341 default:
342 /* huh? */
343 wdev->conn->params.auth_type =
344 NL80211_AUTHTYPE_OPEN_SYSTEM;
345 break;
346 }
347 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
348 schedule_work(&rdev->conn_work);
Johannes Berg19957bb2009-07-02 17:20:43 +0200349 } else if (status_code != WLAN_STATUS_SUCCESS) {
Johannes Bergceca7b72013-05-16 00:55:45 +0200350 __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
351 NULL, 0, NULL, 0,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200352 status_code, false, NULL);
Johannes Bergceca7b72013-05-16 00:55:45 +0200353 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
Johannes Berg6829c872009-07-02 09:13:27 +0200354 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
355 schedule_work(&rdev->conn_work);
356 }
357}
Samuel Ortizb23aa672009-07-01 21:26:54 +0200358
Johannes Bergceca7b72013-05-16 00:55:45 +0200359bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
Johannes Bergf401a6f2009-08-07 14:51:05 +0200360{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800361 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200362
Johannes Bergceca7b72013-05-16 00:55:45 +0200363 if (!wdev->conn)
Johannes Bergf401a6f2009-08-07 14:51:05 +0200364 return false;
365
Johannes Bergceca7b72013-05-16 00:55:45 +0200366 if (status == WLAN_STATUS_SUCCESS) {
367 wdev->conn->state = CFG80211_CONN_CONNECTED;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200368 return false;
Johannes Bergceca7b72013-05-16 00:55:45 +0200369 }
370
371 if (wdev->conn->prev_bssid_valid) {
372 /*
373 * Some stupid APs don't accept reassoc, so we
374 * need to fall back to trying regular assoc;
375 * return true so no event is sent to userspace.
376 */
377 wdev->conn->prev_bssid_valid = false;
378 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
379 schedule_work(&rdev->conn_work);
380 return true;
381 }
382
Johannes Berg923a0e72013-06-28 11:38:54 +0200383 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
Johannes Bergceca7b72013-05-16 00:55:45 +0200384 schedule_work(&rdev->conn_work);
385 return false;
386}
387
388void cfg80211_sme_deauth(struct wireless_dev *wdev)
389{
390 cfg80211_sme_free(wdev);
391}
392
393void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
394{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800395 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg923a0e72013-06-28 11:38:54 +0200396
397 if (!wdev->conn)
398 return;
399
400 wdev->conn->state = CFG80211_CONN_AUTH_FAILED;
401 schedule_work(&rdev->conn_work);
Johannes Bergceca7b72013-05-16 00:55:45 +0200402}
403
404void cfg80211_sme_disassoc(struct wireless_dev *wdev)
405{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800406 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergceca7b72013-05-16 00:55:45 +0200407
408 if (!wdev->conn)
409 return;
410
411 wdev->conn->state = CFG80211_CONN_DEAUTH;
412 schedule_work(&rdev->conn_work);
413}
414
415void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
416{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800417 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg923a0e72013-06-28 11:38:54 +0200418
419 if (!wdev->conn)
420 return;
421
422 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
423 schedule_work(&rdev->conn_work);
Johannes Bergceca7b72013-05-16 00:55:45 +0200424}
425
Johannes Berg46b9d182015-03-31 16:09:13 +0200426static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
427 const u8 *ies, size_t ies_len,
428 const u8 **out_ies, size_t *out_ies_len)
429{
430 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
431 u8 *buf;
432 size_t offs;
433
434 if (!rdev->wiphy.extended_capabilities_len ||
435 (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) {
436 *out_ies = kmemdup(ies, ies_len, GFP_KERNEL);
437 if (!*out_ies)
438 return -ENOMEM;
439 *out_ies_len = ies_len;
440 return 0;
441 }
442
443 buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2,
444 GFP_KERNEL);
445 if (!buf)
446 return -ENOMEM;
447
448 if (ies_len) {
449 static const u8 before_extcapa[] = {
450 /* not listing IEs expected to be created by driver */
451 WLAN_EID_RSN,
452 WLAN_EID_QOS_CAPA,
453 WLAN_EID_RRM_ENABLED_CAPABILITIES,
454 WLAN_EID_MOBILITY_DOMAIN,
455 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
456 WLAN_EID_BSS_COEX_2040,
457 };
458
459 offs = ieee80211_ie_split(ies, ies_len, before_extcapa,
460 ARRAY_SIZE(before_extcapa), 0);
461 memcpy(buf, ies, offs);
462 /* leave a whole for extended capabilities IE */
463 memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
464 ies + offs, ies_len - offs);
465 } else {
466 offs = 0;
467 }
468
469 /* place extended capabilities IE (with only driver capabilities) */
470 buf[offs] = WLAN_EID_EXT_CAPABILITY;
471 buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
472 memcpy(buf + offs + 2,
473 rdev->wiphy.extended_capabilities,
474 rdev->wiphy.extended_capabilities_len);
475
476 *out_ies = buf;
477 *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
478
479 return 0;
480}
481
Johannes Bergceca7b72013-05-16 00:55:45 +0200482static int cfg80211_sme_connect(struct wireless_dev *wdev,
483 struct cfg80211_connect_params *connect,
484 const u8 *prev_bssid)
485{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800486 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergceca7b72013-05-16 00:55:45 +0200487 struct cfg80211_bss *bss;
488 int err;
489
490 if (!rdev->ops->auth || !rdev->ops->assoc)
491 return -EOPNOTSUPP;
492
493 if (wdev->current_bss)
494 return -EALREADY;
495
496 if (WARN_ON(wdev->conn))
497 return -EINPROGRESS;
498
499 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
500 if (!wdev->conn)
501 return -ENOMEM;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200502
503 /*
Johannes Bergceca7b72013-05-16 00:55:45 +0200504 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
Johannes Bergf401a6f2009-08-07 14:51:05 +0200505 */
Johannes Bergceca7b72013-05-16 00:55:45 +0200506 memcpy(&wdev->conn->params, connect, sizeof(*connect));
507 if (connect->bssid) {
508 wdev->conn->params.bssid = wdev->conn->bssid;
509 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
510 }
Johannes Bergf401a6f2009-08-07 14:51:05 +0200511
Johannes Berg46b9d182015-03-31 16:09:13 +0200512 if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
513 &wdev->conn->ie,
514 &wdev->conn->params.ie_len)) {
515 kfree(wdev->conn);
516 wdev->conn = NULL;
517 return -ENOMEM;
Johannes Bergceca7b72013-05-16 00:55:45 +0200518 }
Johannes Berg46b9d182015-03-31 16:09:13 +0200519 wdev->conn->params.ie = wdev->conn->ie;
Johannes Bergceca7b72013-05-16 00:55:45 +0200520
521 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
522 wdev->conn->auto_auth = true;
523 /* start with open system ... should mostly work */
524 wdev->conn->params.auth_type =
525 NL80211_AUTHTYPE_OPEN_SYSTEM;
526 } else {
527 wdev->conn->auto_auth = false;
528 }
529
530 wdev->conn->params.ssid = wdev->ssid;
Zhao, Gangbabd3a22014-03-19 23:02:21 +0800531 wdev->conn->params.ssid_len = wdev->ssid_len;
Johannes Bergceca7b72013-05-16 00:55:45 +0200532
533 /* see if we have the bss already */
534 bss = cfg80211_get_conn_bss(wdev);
535
536 if (prev_bssid) {
537 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
538 wdev->conn->prev_bssid_valid = true;
539 }
540
541 /* we're good if we have a matching bss struct */
542 if (bss) {
Johannes Bergceca7b72013-05-16 00:55:45 +0200543 err = cfg80211_conn_do_work(wdev);
544 cfg80211_put_bss(wdev->wiphy, bss);
545 } else {
546 /* otherwise we'll need to scan for the AP first */
547 err = cfg80211_conn_scan(wdev);
548
549 /*
550 * If we can't scan right now, then we need to scan again
551 * after the current scan finished, since the parameters
552 * changed (unless we find a good AP anyway).
553 */
554 if (err == -EBUSY) {
555 err = 0;
556 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
557 }
558 }
559
560 if (err)
561 cfg80211_sme_free(wdev);
562
563 return err;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200564}
565
Johannes Bergceca7b72013-05-16 00:55:45 +0200566static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
Johannes Berg7d930bc2009-10-20 15:08:53 +0900567{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800568 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergceca7b72013-05-16 00:55:45 +0200569 int err;
Johannes Berg7d930bc2009-10-20 15:08:53 +0900570
Johannes Bergceca7b72013-05-16 00:55:45 +0200571 if (!wdev->conn)
572 return 0;
573
574 if (!rdev->ops->deauth)
575 return -EOPNOTSUPP;
576
577 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
578 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
579 err = 0;
580 goto out;
581 }
582
583 /* wdev->conn->params.bssid must be set if > SCANNING */
584 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
585 wdev->conn->params.bssid,
586 NULL, 0, reason, false);
587 out:
588 cfg80211_sme_free(wdev);
589 return err;
Johannes Berg7d930bc2009-10-20 15:08:53 +0900590}
591
Johannes Bergceca7b72013-05-16 00:55:45 +0200592/*
593 * code shared for in-device and software SME
594 */
595
596static bool cfg80211_is_all_idle(void)
597{
598 struct cfg80211_registered_device *rdev;
599 struct wireless_dev *wdev;
600 bool is_all_idle = true;
601
602 /*
603 * All devices must be idle as otherwise if you are actively
604 * scanning some new beacon hints could be learned and would
605 * count as new regulatory hints.
606 */
607 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
608 list_for_each_entry(wdev, &rdev->wdev_list, list) {
609 wdev_lock(wdev);
610 if (wdev->conn || wdev->current_bss)
611 is_all_idle = false;
612 wdev_unlock(wdev);
613 }
614 }
615
616 return is_all_idle;
617}
618
619static void disconnect_work(struct work_struct *work)
620{
621 rtnl_lock();
622 if (cfg80211_is_all_idle())
623 regulatory_hint_disconnect();
624 rtnl_unlock();
625}
626
627static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
628
629
630/*
631 * API calls for drivers implementing connect/disconnect and
632 * SME event handling
633 */
634
Ben Greear6f390902013-06-19 14:06:25 -0700635/* This method must consume bss one way or another */
Johannes Berg667503dd2009-07-07 03:56:11 +0200636void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
637 const u8 *req_ie, size_t req_ie_len,
638 const u8 *resp_ie, size_t resp_ie_len,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200639 u16 status, bool wextev,
640 struct cfg80211_bss *bss)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200641{
642 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg9caf0362012-11-29 01:25:20 +0100643 const u8 *country_ie;
Johannes Berg3d23e342009-09-29 23:27:28 +0200644#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200645 union iwreq_data wrqu;
646#endif
647
Johannes Berg667503dd2009-07-07 03:56:11 +0200648 ASSERT_WDEV_LOCK(wdev);
649
Johannes Berg074ac8d2010-09-16 14:58:22 +0200650 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
Ben Greear6f390902013-06-19 14:06:25 -0700651 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
652 cfg80211_put_bss(wdev->wiphy, bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200653 return;
Ben Greear6f390902013-06-19 14:06:25 -0700654 }
Samuel Ortizb23aa672009-07-01 21:26:54 +0200655
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800656 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev,
Johannes Berge45cd822009-07-02 09:58:04 +0200657 bssid, req_ie, req_ie_len,
Johannes Bergea416a72009-08-17 12:22:14 +0200658 resp_ie, resp_ie_len,
659 status, GFP_KERNEL);
Johannes Berge45cd822009-07-02 09:58:04 +0200660
Johannes Berg3d23e342009-09-29 23:27:28 +0200661#ifdef CONFIG_CFG80211_WEXT
Johannes Berge45cd822009-07-02 09:58:04 +0200662 if (wextev) {
663 if (req_ie && status == WLAN_STATUS_SUCCESS) {
664 memset(&wrqu, 0, sizeof(wrqu));
665 wrqu.data.length = req_ie_len;
Zhu Yi3409ff72009-07-20 11:47:44 +0800666 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
Johannes Berge45cd822009-07-02 09:58:04 +0200667 }
668
669 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
670 memset(&wrqu, 0, sizeof(wrqu));
671 wrqu.data.length = resp_ie_len;
672 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
673 }
674
675 memset(&wrqu, 0, sizeof(wrqu));
676 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200677 if (bssid && status == WLAN_STATUS_SUCCESS) {
Johannes Berge45cd822009-07-02 09:58:04 +0200678 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200679 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
680 wdev->wext.prev_bssid_valid = true;
681 }
Johannes Berge45cd822009-07-02 09:58:04 +0200682 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
683 }
684#endif
685
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530686 if (!bss && (status == WLAN_STATUS_SUCCESS)) {
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800687 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530688 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
689 wdev->ssid, wdev->ssid_len,
Lior David34d50512016-01-28 10:58:25 +0200690 wdev->conn_bss_type,
Dedy Lansky6eb18132015-02-08 15:52:03 +0200691 IEEE80211_PRIVACY_ANY);
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530692 if (bss)
693 cfg80211_hold_bss(bss_from_pub(bss));
694 }
695
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200696 if (wdev->current_bss) {
697 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100698 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200699 wdev->current_bss = NULL;
700 }
701
Johannes Bergfffd0932009-07-08 14:22:54 +0200702 if (status != WLAN_STATUS_SUCCESS) {
Johannes Bergb47f6102014-09-10 13:39:54 +0300703 kzfree(wdev->connect_keys);
Johannes Bergfffd0932009-07-08 14:22:54 +0200704 wdev->connect_keys = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200705 wdev->ssid_len = 0;
Johannes Bergf1940c52013-06-19 13:21:15 +0200706 if (bss) {
707 cfg80211_unhold_bss(bss_from_pub(bss));
708 cfg80211_put_bss(wdev->wiphy, bss);
709 }
Eliad Pellerc1fbb252014-04-30 15:58:13 +0300710 cfg80211_sme_free(wdev);
Johannes Bergfffd0932009-07-08 14:22:54 +0200711 return;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200712 }
Johannes Bergfffd0932009-07-08 14:22:54 +0200713
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530714 if (WARN_ON(!bss))
715 return;
Johannes Bergfffd0932009-07-08 14:22:54 +0200716
Johannes Bergfffd0932009-07-08 14:22:54 +0200717 wdev->current_bss = bss_from_pub(bss);
718
Johannes Bergfffd0932009-07-08 14:22:54 +0200719 cfg80211_upload_connect_keys(wdev);
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -0700720
Johannes Berg9caf0362012-11-29 01:25:20 +0100721 rcu_read_lock();
722 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
723 if (!country_ie) {
724 rcu_read_unlock();
725 return;
726 }
727
728 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
729 rcu_read_unlock();
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -0700730
731 if (!country_ie)
732 return;
733
734 /*
735 * ieee80211_bss_get_ie() ensures we can access:
736 * - country_ie + 2, the start of the country ie data, and
737 * - and country_ie[1] which is the IE length
738 */
Luis R. Rodriguez789fd032013-10-04 18:07:24 -0700739 regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
740 country_ie + 2, country_ie[1]);
Johannes Berg9caf0362012-11-29 01:25:20 +0100741 kfree(country_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200742}
Johannes Bergf2129352009-07-01 21:26:56 +0200743
744void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
745 const u8 *req_ie, size_t req_ie_len,
746 const u8 *resp_ie, size_t resp_ie_len,
747 u16 status, gfp_t gfp)
748{
Johannes Berg667503dd2009-07-07 03:56:11 +0200749 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800750 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg667503dd2009-07-07 03:56:11 +0200751 struct cfg80211_event *ev;
752 unsigned long flags;
753
754 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
755 if (!ev)
756 return;
757
758 ev->type = EVENT_CONNECT_RESULT;
Zhu Yi16a832e2009-08-19 16:08:22 +0800759 if (bssid)
760 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
Nishant Sarmukadam7834704b2010-04-14 22:03:02 -0700761 if (req_ie_len) {
762 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
763 ev->cr.req_ie_len = req_ie_len;
764 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
765 }
766 if (resp_ie_len) {
767 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
768 ev->cr.resp_ie_len = resp_ie_len;
769 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
770 }
Johannes Berg667503dd2009-07-07 03:56:11 +0200771 ev->cr.status = status;
772
773 spin_lock_irqsave(&wdev->event_lock, flags);
774 list_add_tail(&ev->list, &wdev->event_list);
775 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100776 queue_work(cfg80211_wq, &rdev->event_work);
Johannes Bergf2129352009-07-01 21:26:56 +0200777}
Samuel Ortizb23aa672009-07-01 21:26:54 +0200778EXPORT_SYMBOL(cfg80211_connect_result);
779
Ben Greear0e3a39b2013-06-19 14:06:27 -0700780/* Consumes bss object one way or another */
Jouni Malinened9d0102011-05-16 19:40:15 +0300781void __cfg80211_roamed(struct wireless_dev *wdev,
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530782 struct cfg80211_bss *bss,
Johannes Berg667503dd2009-07-07 03:56:11 +0200783 const u8 *req_ie, size_t req_ie_len,
784 const u8 *resp_ie, size_t resp_ie_len)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200785{
Johannes Berg3d23e342009-09-29 23:27:28 +0200786#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200787 union iwreq_data wrqu;
788#endif
Johannes Berg667503dd2009-07-07 03:56:11 +0200789 ASSERT_WDEV_LOCK(wdev);
790
Johannes Berg074ac8d2010-09-16 14:58:22 +0200791 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
792 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530793 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200794
Johannes Bergceca7b72013-05-16 00:55:45 +0200795 if (WARN_ON(!wdev->current_bss))
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530796 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200797
Samuel Ortizb23aa672009-07-01 21:26:54 +0200798 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100799 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200800 wdev->current_bss = NULL;
801
Johannes Berg19957bb2009-07-02 17:20:43 +0200802 cfg80211_hold_bss(bss_from_pub(bss));
803 wdev->current_bss = bss_from_pub(bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200804
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800805 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
806 wdev->netdev, bss->bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200807 req_ie, req_ie_len, resp_ie, resp_ie_len,
808 GFP_KERNEL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200809
Johannes Berg3d23e342009-09-29 23:27:28 +0200810#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200811 if (req_ie) {
812 memset(&wrqu, 0, sizeof(wrqu));
813 wrqu.data.length = req_ie_len;
Zhu Yi3409ff72009-07-20 11:47:44 +0800814 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
Johannes Berg667503dd2009-07-07 03:56:11 +0200815 &wrqu, req_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200816 }
817
818 if (resp_ie) {
819 memset(&wrqu, 0, sizeof(wrqu));
820 wrqu.data.length = resp_ie_len;
Johannes Berg667503dd2009-07-07 03:56:11 +0200821 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
822 &wrqu, resp_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200823 }
824
825 memset(&wrqu, 0, sizeof(wrqu));
826 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530827 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
828 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200829 wdev->wext.prev_bssid_valid = true;
Johannes Berg667503dd2009-07-07 03:56:11 +0200830 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200831#endif
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530832
833 return;
834out:
Johannes Berg5b112d32013-02-01 01:49:58 +0100835 cfg80211_put_bss(wdev->wiphy, bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200836}
Johannes Berg667503dd2009-07-07 03:56:11 +0200837
Jouni Malinened9d0102011-05-16 19:40:15 +0300838void cfg80211_roamed(struct net_device *dev,
839 struct ieee80211_channel *channel,
840 const u8 *bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200841 const u8 *req_ie, size_t req_ie_len,
842 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
843{
844 struct wireless_dev *wdev = dev->ieee80211_ptr;
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530845 struct cfg80211_bss *bss;
846
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530847 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
Dedy Lansky6eb18132015-02-08 15:52:03 +0200848 wdev->ssid_len,
Lior David34d50512016-01-28 10:58:25 +0200849 wdev->conn_bss_type, IEEE80211_PRIVACY_ANY);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530850 if (WARN_ON(!bss))
851 return;
852
853 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
854 resp_ie_len, gfp);
855}
856EXPORT_SYMBOL(cfg80211_roamed);
857
Ben Greear0e3a39b2013-06-19 14:06:27 -0700858/* Consumes bss object one way or another */
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530859void cfg80211_roamed_bss(struct net_device *dev,
860 struct cfg80211_bss *bss, const u8 *req_ie,
861 size_t req_ie_len, const u8 *resp_ie,
862 size_t resp_ie_len, gfp_t gfp)
863{
864 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800865 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg667503dd2009-07-07 03:56:11 +0200866 struct cfg80211_event *ev;
867 unsigned long flags;
868
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530869 if (WARN_ON(!bss))
Johannes Berg667503dd2009-07-07 03:56:11 +0200870 return;
871
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530872 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
873 if (!ev) {
Johannes Berg5b112d32013-02-01 01:49:58 +0100874 cfg80211_put_bss(wdev->wiphy, bss);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530875 return;
876 }
877
Johannes Berg667503dd2009-07-07 03:56:11 +0200878 ev->type = EVENT_ROAMED;
Johannes Berg667503dd2009-07-07 03:56:11 +0200879 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
880 ev->rm.req_ie_len = req_ie_len;
881 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
882 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
883 ev->rm.resp_ie_len = resp_ie_len;
884 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530885 ev->rm.bss = bss;
Johannes Berg667503dd2009-07-07 03:56:11 +0200886
887 spin_lock_irqsave(&wdev->event_lock, flags);
888 list_add_tail(&ev->list, &wdev->event_list);
889 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100890 queue_work(cfg80211_wq, &rdev->event_work);
Johannes Berg667503dd2009-07-07 03:56:11 +0200891}
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530892EXPORT_SYMBOL(cfg80211_roamed_bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200893
Johannes Berg667503dd2009-07-07 03:56:11 +0200894void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
Johannes Berg6829c872009-07-02 09:13:27 +0200895 size_t ie_len, u16 reason, bool from_ap)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200896{
897 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800898 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergfffd0932009-07-08 14:22:54 +0200899 int i;
Johannes Berg3d23e342009-09-29 23:27:28 +0200900#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200901 union iwreq_data wrqu;
902#endif
903
Johannes Berg667503dd2009-07-07 03:56:11 +0200904 ASSERT_WDEV_LOCK(wdev);
905
Johannes Berg074ac8d2010-09-16 14:58:22 +0200906 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
907 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Samuel Ortizb23aa672009-07-01 21:26:54 +0200908 return;
909
Samuel Ortizb23aa672009-07-01 21:26:54 +0200910 if (wdev->current_bss) {
911 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100912 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200913 }
914
915 wdev->current_bss = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200916 wdev->ssid_len = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200917
Johannes Bergfffd0932009-07-08 14:22:54 +0200918 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
919
Arend van Sprielb8607152016-02-15 14:35:53 +0100920 /* stop critical protocol if supported */
921 if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
922 rdev->crit_proto_nlportid = 0;
923 rdev_crit_proto_stop(rdev, wdev);
924 }
925
Johannes Bergfffd0932009-07-08 14:22:54 +0200926 /*
927 * Delete all the keys ... pairwise keys can't really
928 * exist any more anyway, but default keys might.
929 */
930 if (rdev->ops->del_key)
931 for (i = 0; i < 6; i++)
Hila Gonene35e4d22012-06-27 17:19:42 +0300932 rdev_del_key(rdev, dev, i, false, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200933
Kyeyoon Parkfa9ffc72013-12-16 23:01:30 -0800934 rdev_set_qos_map(rdev, dev, NULL);
935
Johannes Berg3d23e342009-09-29 23:27:28 +0200936#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200937 memset(&wrqu, 0, sizeof(wrqu));
938 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
939 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
Abhijeet Kolekar5f612032010-01-13 13:23:14 -0800940 wdev->wext.connect.ssid_len = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200941#endif
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -0500942
943 schedule_work(&cfg80211_disconnect_work);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200944}
945
946void cfg80211_disconnected(struct net_device *dev, u16 reason,
Johannes Berg80279fb2015-05-22 16:22:20 +0200947 const u8 *ie, size_t ie_len,
948 bool locally_generated, gfp_t gfp)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200949{
Johannes Berg667503dd2009-07-07 03:56:11 +0200950 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800951 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg667503dd2009-07-07 03:56:11 +0200952 struct cfg80211_event *ev;
953 unsigned long flags;
954
955 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
956 if (!ev)
957 return;
958
959 ev->type = EVENT_DISCONNECTED;
960 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
961 ev->dc.ie_len = ie_len;
962 memcpy((void *)ev->dc.ie, ie, ie_len);
963 ev->dc.reason = reason;
Johannes Berg80279fb2015-05-22 16:22:20 +0200964 ev->dc.locally_generated = locally_generated;
Johannes Berg667503dd2009-07-07 03:56:11 +0200965
966 spin_lock_irqsave(&wdev->event_lock, flags);
967 list_add_tail(&ev->list, &wdev->event_list);
968 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100969 queue_work(cfg80211_wq, &rdev->event_work);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200970}
971EXPORT_SYMBOL(cfg80211_disconnected);
972
Johannes Bergceca7b72013-05-16 00:55:45 +0200973/*
974 * API calls for nl80211/wext compatibility code
975 */
Johannes Berg83739b02013-05-15 17:44:01 +0200976int cfg80211_connect(struct cfg80211_registered_device *rdev,
977 struct net_device *dev,
978 struct cfg80211_connect_params *connect,
979 struct cfg80211_cached_keys *connkeys,
980 const u8 *prev_bssid)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200981{
Samuel Ortizb23aa672009-07-01 21:26:54 +0200982 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg667503dd2009-07-07 03:56:11 +0200983 int err;
984
985 ASSERT_WDEV_LOCK(wdev);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200986
Johannes Bergfffd0932009-07-08 14:22:54 +0200987 if (WARN_ON(wdev->connect_keys)) {
Johannes Bergb47f6102014-09-10 13:39:54 +0300988 kzfree(wdev->connect_keys);
Johannes Bergfffd0932009-07-08 14:22:54 +0200989 wdev->connect_keys = NULL;
990 }
991
Ben Greear7e7c8922011-11-18 11:31:59 -0800992 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
993 rdev->wiphy.ht_capa_mod_mask);
994
Johannes Bergfffd0932009-07-08 14:22:54 +0200995 if (connkeys && connkeys->def >= 0) {
996 int idx;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200997 u32 cipher;
Johannes Bergfffd0932009-07-08 14:22:54 +0200998
999 idx = connkeys->def;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +02001000 cipher = connkeys->params[idx].cipher;
Johannes Bergfffd0932009-07-08 14:22:54 +02001001 /* If given a WEP key we may need it for shared key auth */
Samuel Ortizbcba8ea2009-08-06 21:04:41 +02001002 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
1003 cipher == WLAN_CIPHER_SUITE_WEP104) {
Johannes Bergfffd0932009-07-08 14:22:54 +02001004 connect->key_idx = idx;
1005 connect->key = connkeys->params[idx].key;
1006 connect->key_len = connkeys->params[idx].key_len;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +02001007
1008 /*
1009 * If ciphers are not set (e.g. when going through
1010 * iwconfig), we have to set them appropriately here.
1011 */
1012 if (connect->crypto.cipher_group == 0)
1013 connect->crypto.cipher_group = cipher;
1014
1015 if (connect->crypto.n_ciphers_pairwise == 0) {
1016 connect->crypto.n_ciphers_pairwise = 1;
1017 connect->crypto.ciphers_pairwise[0] = cipher;
1018 }
Johannes Bergfffd0932009-07-08 14:22:54 +02001019 }
1020 }
1021
Johannes Bergceca7b72013-05-16 00:55:45 +02001022 wdev->connect_keys = connkeys;
1023 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
1024 wdev->ssid_len = connect->ssid_len;
Johannes Berg6829c872009-07-02 09:13:27 +02001025
Lior David34d50512016-01-28 10:58:25 +02001026 wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
1027 IEEE80211_BSS_TYPE_ESS;
1028
Johannes Bergceca7b72013-05-16 00:55:45 +02001029 if (!rdev->ops->connect)
1030 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1031 else
Hila Gonene35e4d22012-06-27 17:19:42 +03001032 err = rdev_connect(rdev, dev, connect);
Johannes Berg6829c872009-07-02 09:13:27 +02001033
Johannes Bergceca7b72013-05-16 00:55:45 +02001034 if (err) {
1035 wdev->connect_keys = NULL;
1036 wdev->ssid_len = 0;
1037 return err;
Samuel Ortizb23aa672009-07-01 21:26:54 +02001038 }
Johannes Bergceca7b72013-05-16 00:55:45 +02001039
1040 return 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +02001041}
1042
Johannes Berg83739b02013-05-15 17:44:01 +02001043int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1044 struct net_device *dev, u16 reason, bool wextev)
Samuel Ortizb23aa672009-07-01 21:26:54 +02001045{
Johannes Berg6829c872009-07-02 09:13:27 +02001046 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Bergdee8a972013-08-13 09:23:57 +02001047 int err = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +02001048
Johannes Berg667503dd2009-07-07 03:56:11 +02001049 ASSERT_WDEV_LOCK(wdev);
1050
Johannes Bergb47f6102014-09-10 13:39:54 +03001051 kzfree(wdev->connect_keys);
Johannes Bergfffd0932009-07-08 14:22:54 +02001052 wdev->connect_keys = NULL;
1053
Johannes Bergdee8a972013-08-13 09:23:57 +02001054 if (wdev->conn)
Johannes Bergceca7b72013-05-16 00:55:45 +02001055 err = cfg80211_sme_disconnect(wdev, reason);
Johannes Bergdee8a972013-08-13 09:23:57 +02001056 else if (!rdev->ops->disconnect)
Johannes Bergceca7b72013-05-16 00:55:45 +02001057 cfg80211_mlme_down(rdev, dev);
Johannes Bergdee8a972013-08-13 09:23:57 +02001058 else if (wdev->current_bss)
Hila Gonene35e4d22012-06-27 17:19:42 +03001059 err = rdev_disconnect(rdev, dev, reason);
Samuel Ortizb23aa672009-07-01 21:26:54 +02001060
Johannes Bergceca7b72013-05-16 00:55:45 +02001061 return err;
Johannes Berg19957bb2009-07-02 17:20:43 +02001062}