blob: 8bbeeb302216223a260085634bf6b5627c209783 [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 Berg6829c872009-07-02 09:13:27 +020045 u8 *ie;
46 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
Johannes Berg6829c872009-07-02 09:13:27 +020083 if (wdev->conn->params.channel)
84 request->channels[0] = wdev->conn->params.channel;
85 else {
86 int i = 0, j;
87 enum ieee80211_band band;
Rajkumar Manoharane3081502011-09-15 17:40:50 +053088 struct ieee80211_supported_band *bands;
89 struct ieee80211_channel *channel;
Johannes Berg6829c872009-07-02 09:13:27 +020090
91 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
Rajkumar Manoharane3081502011-09-15 17:40:50 +053092 bands = wdev->wiphy->bands[band];
93 if (!bands)
Johannes Berg6829c872009-07-02 09:13:27 +020094 continue;
Rajkumar Manoharane3081502011-09-15 17:40:50 +053095 for (j = 0; j < bands->n_channels; j++) {
96 channel = &bands->channels[j];
97 if (channel->flags & IEEE80211_CHAN_DISABLED)
98 continue;
99 request->channels[i++] = channel;
100 }
101 request->rates[band] = (1 << bands->n_bitrates) - 1;
Johannes Berg6829c872009-07-02 09:13:27 +0200102 }
Rajkumar Manoharane3081502011-09-15 17:40:50 +0530103 n_channels = i;
Johannes Berg6829c872009-07-02 09:13:27 +0200104 }
105 request->n_channels = n_channels;
Johannes Berg5ba63532009-08-07 17:54:07 +0200106 request->ssids = (void *)&request->channels[n_channels];
Johannes Berg6829c872009-07-02 09:13:27 +0200107 request->n_ssids = 1;
108
109 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
110 wdev->conn->params.ssid_len);
111 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
112
Johannes Bergfd014282012-06-18 19:17:03 +0200113 request->wdev = wdev;
Johannes Berg79c97e92009-07-07 03:56:12 +0200114 request->wiphy = &rdev->wiphy;
Sam Leffler15d60302012-10-11 21:03:34 -0700115 request->scan_start = jiffies;
Johannes Berg6829c872009-07-02 09:13:27 +0200116
Johannes Berg79c97e92009-07-07 03:56:12 +0200117 rdev->scan_req = request;
Johannes Berg6829c872009-07-02 09:13:27 +0200118
Hila Gonene35e4d22012-06-27 17:19:42 +0300119 err = rdev_scan(rdev, request);
Johannes Berg6829c872009-07-02 09:13:27 +0200120 if (!err) {
121 wdev->conn->state = CFG80211_CONN_SCANNING;
Johannes Bergfd014282012-06-18 19:17:03 +0200122 nl80211_send_scan_start(rdev, wdev);
Johannes Berg463d0182009-07-14 00:33:35 +0200123 dev_hold(wdev->netdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200124 } else {
Johannes Berg79c97e92009-07-07 03:56:12 +0200125 rdev->scan_req = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200126 kfree(request);
127 }
128 return err;
129}
130
131static int cfg80211_conn_do_work(struct wireless_dev *wdev)
132{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800133 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg19957bb2009-07-02 17:20:43 +0200134 struct cfg80211_connect_params *params;
Johannes Bergf62fab72013-02-21 20:09:09 +0100135 struct cfg80211_assoc_request req = {};
Johannes Berg19957bb2009-07-02 17:20:43 +0200136 int err;
Johannes Berg6829c872009-07-02 09:13:27 +0200137
Johannes Berg667503dd2009-07-07 03:56:11 +0200138 ASSERT_WDEV_LOCK(wdev);
139
Johannes Berg6829c872009-07-02 09:13:27 +0200140 if (!wdev->conn)
141 return 0;
142
Johannes Berg19957bb2009-07-02 17:20:43 +0200143 params = &wdev->conn->params;
144
Johannes Berg6829c872009-07-02 09:13:27 +0200145 switch (wdev->conn->state) {
Johannes Bergceca7b72013-05-16 00:55:45 +0200146 case CFG80211_CONN_SCANNING:
147 /* didn't find it during scan ... */
148 return -ENOENT;
Johannes Berg6829c872009-07-02 09:13:27 +0200149 case CFG80211_CONN_SCAN_AGAIN:
150 return cfg80211_conn_scan(wdev);
151 case CFG80211_CONN_AUTHENTICATE_NEXT:
Johannes Berg2fd05112014-04-29 17:52:36 +0200152 if (WARN_ON(!rdev->ops->auth))
153 return -EOPNOTSUPP;
Johannes Berg19957bb2009-07-02 17:20:43 +0200154 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
Johannes Berg91bf9b22013-05-15 17:44:01 +0200155 return cfg80211_mlme_auth(rdev, wdev->netdev,
156 params->channel, params->auth_type,
157 params->bssid,
158 params->ssid, params->ssid_len,
159 NULL, 0,
160 params->key, params->key_len,
161 params->key_idx, NULL, 0);
Johannes Berg923a0e72013-06-28 11:38:54 +0200162 case CFG80211_CONN_AUTH_FAILED:
163 return -ENOTCONN;
Johannes Berg6829c872009-07-02 09:13:27 +0200164 case CFG80211_CONN_ASSOCIATE_NEXT:
Johannes Berg2fd05112014-04-29 17:52:36 +0200165 if (WARN_ON(!rdev->ops->assoc))
166 return -EOPNOTSUPP;
Johannes Berg19957bb2009-07-02 17:20:43 +0200167 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200168 if (wdev->conn->prev_bssid_valid)
Johannes Bergf62fab72013-02-21 20:09:09 +0100169 req.prev_bssid = wdev->conn->prev_bssid;
170 req.ie = params->ie;
171 req.ie_len = params->ie_len;
172 req.use_mfp = params->mfp != NL80211_MFP_NO;
173 req.crypto = params->crypto;
174 req.flags = params->flags;
175 req.ht_capa = params->ht_capa;
176 req.ht_capa_mask = params->ht_capa_mask;
177 req.vht_capa = params->vht_capa;
178 req.vht_capa_mask = params->vht_capa_mask;
179
Johannes Berg91bf9b22013-05-15 17:44:01 +0200180 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
181 params->bssid, params->ssid,
182 params->ssid_len, &req);
Johannes Berg19957bb2009-07-02 17:20:43 +0200183 if (err)
Johannes Berg91bf9b22013-05-15 17:44:01 +0200184 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
185 NULL, 0,
186 WLAN_REASON_DEAUTH_LEAVING,
187 false);
Johannes Berg19957bb2009-07-02 17:20:43 +0200188 return err;
Johannes Berg923a0e72013-06-28 11:38:54 +0200189 case CFG80211_CONN_ASSOC_FAILED:
190 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
191 NULL, 0,
192 WLAN_REASON_DEAUTH_LEAVING, false);
193 return -ENOTCONN;
Johannes Bergceca7b72013-05-16 00:55:45 +0200194 case CFG80211_CONN_DEAUTH:
Johannes Berg91bf9b22013-05-15 17:44:01 +0200195 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
196 NULL, 0,
197 WLAN_REASON_DEAUTH_LEAVING, false);
Johannes Berg923a0e72013-06-28 11:38:54 +0200198 /* free directly, disconnected event already sent */
199 cfg80211_sme_free(wdev);
Johannes Bergceca7b72013-05-16 00:55:45 +0200200 return 0;
Johannes Berg6829c872009-07-02 09:13:27 +0200201 default:
202 return 0;
203 }
204}
205
206void cfg80211_conn_work(struct work_struct *work)
207{
Johannes Berg79c97e92009-07-07 03:56:12 +0200208 struct cfg80211_registered_device *rdev =
Johannes Berg6829c872009-07-02 09:13:27 +0200209 container_of(work, struct cfg80211_registered_device, conn_work);
210 struct wireless_dev *wdev;
Johannes Berg7400f422009-10-31 07:40:37 +0100211 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200212
213 rtnl_lock();
Johannes Berg6829c872009-07-02 09:13:27 +0200214
Johannes Berg89a54e42012-06-15 14:33:17 +0200215 list_for_each_entry(wdev, &rdev->wdev_list, list) {
Johannes Bergc8157972013-05-23 18:10:21 +0200216 if (!wdev->netdev)
217 continue;
218
Johannes Berg667503dd2009-07-07 03:56:11 +0200219 wdev_lock(wdev);
220 if (!netif_running(wdev->netdev)) {
221 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200222 continue;
Johannes Berg667503dd2009-07-07 03:56:11 +0200223 }
Johannes Bergceca7b72013-05-16 00:55:45 +0200224 if (!wdev->conn ||
225 wdev->conn->state == CFG80211_CONN_CONNECTED) {
Johannes Berg667503dd2009-07-07 03:56:11 +0200226 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200227 continue;
Johannes Berg667503dd2009-07-07 03:56:11 +0200228 }
Johannes Berg7400f422009-10-31 07:40:37 +0100229 if (wdev->conn->params.bssid) {
230 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
231 bssid = bssid_buf;
232 }
Johannes Bergceca7b72013-05-16 00:55:45 +0200233 if (cfg80211_conn_do_work(wdev)) {
Johannes Berg667503dd2009-07-07 03:56:11 +0200234 __cfg80211_connect_result(
Johannes Berg7d930bc2009-10-20 15:08:53 +0900235 wdev->netdev, bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200236 NULL, 0, NULL, 0,
237 WLAN_STATUS_UNSPECIFIED_FAILURE,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200238 false, NULL);
Johannes Bergceca7b72013-05-16 00:55:45 +0200239 }
Johannes Berg667503dd2009-07-07 03:56:11 +0200240 wdev_unlock(wdev);
Johannes Berg6829c872009-07-02 09:13:27 +0200241 }
242
Johannes Berg6829c872009-07-02 09:13:27 +0200243 rtnl_unlock();
244}
245
Ben Greear0e3a39b2013-06-19 14:06:27 -0700246/* Returned bss is reference counted and must be cleaned up appropriately. */
Johannes Bergbbac31f2009-09-16 09:04:26 -0700247static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
Johannes Berg6829c872009-07-02 09:13:27 +0200248{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800249 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +0200250 struct cfg80211_bss *bss;
251 u16 capa = WLAN_CAPABILITY_ESS;
252
Johannes Berg667503dd2009-07-07 03:56:11 +0200253 ASSERT_WDEV_LOCK(wdev);
254
Johannes Berg6829c872009-07-02 09:13:27 +0200255 if (wdev->conn->params.privacy)
256 capa |= WLAN_CAPABILITY_PRIVACY;
257
Jouni Malinened9d0102011-05-16 19:40:15 +0300258 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
259 wdev->conn->params.bssid,
Johannes Berg6829c872009-07-02 09:13:27 +0200260 wdev->conn->params.ssid,
261 wdev->conn->params.ssid_len,
262 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
263 capa);
Johannes Berg6829c872009-07-02 09:13:27 +0200264 if (!bss)
Johannes Bergbbac31f2009-09-16 09:04:26 -0700265 return NULL;
Johannes Berg6829c872009-07-02 09:13:27 +0200266
267 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
268 wdev->conn->params.bssid = wdev->conn->bssid;
269 wdev->conn->params.channel = bss->channel;
270 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
Johannes Berg79c97e92009-07-07 03:56:12 +0200271 schedule_work(&rdev->conn_work);
Johannes Berg6829c872009-07-02 09:13:27 +0200272
Johannes Bergbbac31f2009-09-16 09:04:26 -0700273 return bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200274}
275
Johannes Berg667503dd2009-07-07 03:56:11 +0200276static void __cfg80211_sme_scan_done(struct net_device *dev)
Johannes Berg6829c872009-07-02 09:13:27 +0200277{
278 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800279 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergbbac31f2009-09-16 09:04:26 -0700280 struct cfg80211_bss *bss;
Johannes Berg6829c872009-07-02 09:13:27 +0200281
Johannes Berg667503dd2009-07-07 03:56:11 +0200282 ASSERT_WDEV_LOCK(wdev);
283
Zhu Yid4b1a682009-07-16 17:34:14 +0800284 if (!wdev->conn)
Johannes Berg6829c872009-07-02 09:13:27 +0200285 return;
286
287 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
288 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
289 return;
290
Johannes Bergbbac31f2009-09-16 09:04:26 -0700291 bss = cfg80211_get_conn_bss(wdev);
Johannes Bergceca7b72013-05-16 00:55:45 +0200292 if (bss)
Johannes Berg5b112d32013-02-01 01:49:58 +0100293 cfg80211_put_bss(&rdev->wiphy, bss);
Johannes Bergceca7b72013-05-16 00:55:45 +0200294 else
295 schedule_work(&rdev->conn_work);
Johannes Berg6829c872009-07-02 09:13:27 +0200296}
297
Johannes Berg667503dd2009-07-07 03:56:11 +0200298void cfg80211_sme_scan_done(struct net_device *dev)
299{
300 struct wireless_dev *wdev = dev->ieee80211_ptr;
301
302 wdev_lock(wdev);
303 __cfg80211_sme_scan_done(dev);
304 wdev_unlock(wdev);
305}
306
Johannes Bergceca7b72013-05-16 00:55:45 +0200307void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
Johannes Berg6829c872009-07-02 09:13:27 +0200308{
Johannes Berg6829c872009-07-02 09:13:27 +0200309 struct wiphy *wiphy = wdev->wiphy;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800310 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
Johannes Berg6829c872009-07-02 09:13:27 +0200311 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
312 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
313
Johannes Berg667503dd2009-07-07 03:56:11 +0200314 ASSERT_WDEV_LOCK(wdev);
315
Johannes Bergceca7b72013-05-16 00:55:45 +0200316 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
Johannes Berg6829c872009-07-02 09:13:27 +0200317 return;
318
319 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
320 wdev->conn->auto_auth &&
321 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
322 /* select automatically between only open, shared, leap */
323 switch (wdev->conn->params.auth_type) {
324 case NL80211_AUTHTYPE_OPEN_SYSTEM:
Johannes Bergfffd0932009-07-08 14:22:54 +0200325 if (wdev->connect_keys)
326 wdev->conn->params.auth_type =
327 NL80211_AUTHTYPE_SHARED_KEY;
328 else
329 wdev->conn->params.auth_type =
330 NL80211_AUTHTYPE_NETWORK_EAP;
Johannes Berg6829c872009-07-02 09:13:27 +0200331 break;
332 case NL80211_AUTHTYPE_SHARED_KEY:
333 wdev->conn->params.auth_type =
334 NL80211_AUTHTYPE_NETWORK_EAP;
335 break;
336 default:
337 /* huh? */
338 wdev->conn->params.auth_type =
339 NL80211_AUTHTYPE_OPEN_SYSTEM;
340 break;
341 }
342 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
343 schedule_work(&rdev->conn_work);
Johannes Berg19957bb2009-07-02 17:20:43 +0200344 } else if (status_code != WLAN_STATUS_SUCCESS) {
Johannes Bergceca7b72013-05-16 00:55:45 +0200345 __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
346 NULL, 0, NULL, 0,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200347 status_code, false, NULL);
Johannes Bergceca7b72013-05-16 00:55:45 +0200348 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
Johannes Berg6829c872009-07-02 09:13:27 +0200349 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
350 schedule_work(&rdev->conn_work);
351 }
352}
Samuel Ortizb23aa672009-07-01 21:26:54 +0200353
Johannes Bergceca7b72013-05-16 00:55:45 +0200354bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
Johannes Bergf401a6f2009-08-07 14:51:05 +0200355{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800356 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200357
Johannes Bergceca7b72013-05-16 00:55:45 +0200358 if (!wdev->conn)
Johannes Bergf401a6f2009-08-07 14:51:05 +0200359 return false;
360
Johannes Bergceca7b72013-05-16 00:55:45 +0200361 if (status == WLAN_STATUS_SUCCESS) {
362 wdev->conn->state = CFG80211_CONN_CONNECTED;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200363 return false;
Johannes Bergceca7b72013-05-16 00:55:45 +0200364 }
365
366 if (wdev->conn->prev_bssid_valid) {
367 /*
368 * Some stupid APs don't accept reassoc, so we
369 * need to fall back to trying regular assoc;
370 * return true so no event is sent to userspace.
371 */
372 wdev->conn->prev_bssid_valid = false;
373 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
374 schedule_work(&rdev->conn_work);
375 return true;
376 }
377
Johannes Berg923a0e72013-06-28 11:38:54 +0200378 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
Johannes Bergceca7b72013-05-16 00:55:45 +0200379 schedule_work(&rdev->conn_work);
380 return false;
381}
382
383void cfg80211_sme_deauth(struct wireless_dev *wdev)
384{
385 cfg80211_sme_free(wdev);
386}
387
388void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
389{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800390 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg923a0e72013-06-28 11:38:54 +0200391
392 if (!wdev->conn)
393 return;
394
395 wdev->conn->state = CFG80211_CONN_AUTH_FAILED;
396 schedule_work(&rdev->conn_work);
Johannes Bergceca7b72013-05-16 00:55:45 +0200397}
398
399void cfg80211_sme_disassoc(struct wireless_dev *wdev)
400{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800401 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergceca7b72013-05-16 00:55:45 +0200402
403 if (!wdev->conn)
404 return;
405
406 wdev->conn->state = CFG80211_CONN_DEAUTH;
407 schedule_work(&rdev->conn_work);
408}
409
410void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
411{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800412 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg923a0e72013-06-28 11:38:54 +0200413
414 if (!wdev->conn)
415 return;
416
417 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
418 schedule_work(&rdev->conn_work);
Johannes Bergceca7b72013-05-16 00:55:45 +0200419}
420
421static int cfg80211_sme_connect(struct wireless_dev *wdev,
422 struct cfg80211_connect_params *connect,
423 const u8 *prev_bssid)
424{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800425 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergceca7b72013-05-16 00:55:45 +0200426 struct cfg80211_bss *bss;
427 int err;
428
429 if (!rdev->ops->auth || !rdev->ops->assoc)
430 return -EOPNOTSUPP;
431
432 if (wdev->current_bss)
433 return -EALREADY;
434
435 if (WARN_ON(wdev->conn))
436 return -EINPROGRESS;
437
438 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
439 if (!wdev->conn)
440 return -ENOMEM;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200441
442 /*
Johannes Bergceca7b72013-05-16 00:55:45 +0200443 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
Johannes Bergf401a6f2009-08-07 14:51:05 +0200444 */
Johannes Bergceca7b72013-05-16 00:55:45 +0200445 memcpy(&wdev->conn->params, connect, sizeof(*connect));
446 if (connect->bssid) {
447 wdev->conn->params.bssid = wdev->conn->bssid;
448 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
449 }
Johannes Bergf401a6f2009-08-07 14:51:05 +0200450
Johannes Bergceca7b72013-05-16 00:55:45 +0200451 if (connect->ie) {
452 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
453 GFP_KERNEL);
454 wdev->conn->params.ie = wdev->conn->ie;
455 if (!wdev->conn->ie) {
456 kfree(wdev->conn);
457 wdev->conn = NULL;
458 return -ENOMEM;
459 }
460 }
461
462 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
463 wdev->conn->auto_auth = true;
464 /* start with open system ... should mostly work */
465 wdev->conn->params.auth_type =
466 NL80211_AUTHTYPE_OPEN_SYSTEM;
467 } else {
468 wdev->conn->auto_auth = false;
469 }
470
471 wdev->conn->params.ssid = wdev->ssid;
Zhao, Gangbabd3a22014-03-19 23:02:21 +0800472 wdev->conn->params.ssid_len = wdev->ssid_len;
Johannes Bergceca7b72013-05-16 00:55:45 +0200473
474 /* see if we have the bss already */
475 bss = cfg80211_get_conn_bss(wdev);
476
477 if (prev_bssid) {
478 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
479 wdev->conn->prev_bssid_valid = true;
480 }
481
482 /* we're good if we have a matching bss struct */
483 if (bss) {
Johannes Bergceca7b72013-05-16 00:55:45 +0200484 err = cfg80211_conn_do_work(wdev);
485 cfg80211_put_bss(wdev->wiphy, bss);
486 } else {
487 /* otherwise we'll need to scan for the AP first */
488 err = cfg80211_conn_scan(wdev);
489
490 /*
491 * If we can't scan right now, then we need to scan again
492 * after the current scan finished, since the parameters
493 * changed (unless we find a good AP anyway).
494 */
495 if (err == -EBUSY) {
496 err = 0;
497 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
498 }
499 }
500
501 if (err)
502 cfg80211_sme_free(wdev);
503
504 return err;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200505}
506
Johannes Bergceca7b72013-05-16 00:55:45 +0200507static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
Johannes Berg7d930bc2009-10-20 15:08:53 +0900508{
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800509 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergceca7b72013-05-16 00:55:45 +0200510 int err;
Johannes Berg7d930bc2009-10-20 15:08:53 +0900511
Johannes Bergceca7b72013-05-16 00:55:45 +0200512 if (!wdev->conn)
513 return 0;
514
515 if (!rdev->ops->deauth)
516 return -EOPNOTSUPP;
517
518 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
519 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
520 err = 0;
521 goto out;
522 }
523
524 /* wdev->conn->params.bssid must be set if > SCANNING */
525 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
526 wdev->conn->params.bssid,
527 NULL, 0, reason, false);
528 out:
529 cfg80211_sme_free(wdev);
530 return err;
Johannes Berg7d930bc2009-10-20 15:08:53 +0900531}
532
Johannes Bergceca7b72013-05-16 00:55:45 +0200533/*
534 * code shared for in-device and software SME
535 */
536
537static bool cfg80211_is_all_idle(void)
538{
539 struct cfg80211_registered_device *rdev;
540 struct wireless_dev *wdev;
541 bool is_all_idle = true;
542
543 /*
544 * All devices must be idle as otherwise if you are actively
545 * scanning some new beacon hints could be learned and would
546 * count as new regulatory hints.
547 */
548 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
549 list_for_each_entry(wdev, &rdev->wdev_list, list) {
550 wdev_lock(wdev);
551 if (wdev->conn || wdev->current_bss)
552 is_all_idle = false;
553 wdev_unlock(wdev);
554 }
555 }
556
557 return is_all_idle;
558}
559
560static void disconnect_work(struct work_struct *work)
561{
562 rtnl_lock();
563 if (cfg80211_is_all_idle())
564 regulatory_hint_disconnect();
565 rtnl_unlock();
566}
567
568static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
569
570
571/*
572 * API calls for drivers implementing connect/disconnect and
573 * SME event handling
574 */
575
Ben Greear6f390902013-06-19 14:06:25 -0700576/* This method must consume bss one way or another */
Johannes Berg667503dd2009-07-07 03:56:11 +0200577void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
578 const u8 *req_ie, size_t req_ie_len,
579 const u8 *resp_ie, size_t resp_ie_len,
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200580 u16 status, bool wextev,
581 struct cfg80211_bss *bss)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200582{
583 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg9caf0362012-11-29 01:25:20 +0100584 const u8 *country_ie;
Johannes Berg3d23e342009-09-29 23:27:28 +0200585#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200586 union iwreq_data wrqu;
587#endif
588
Johannes Berg667503dd2009-07-07 03:56:11 +0200589 ASSERT_WDEV_LOCK(wdev);
590
Johannes Berg074ac8d2010-09-16 14:58:22 +0200591 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
Ben Greear6f390902013-06-19 14:06:25 -0700592 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
593 cfg80211_put_bss(wdev->wiphy, bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200594 return;
Ben Greear6f390902013-06-19 14:06:25 -0700595 }
Samuel Ortizb23aa672009-07-01 21:26:54 +0200596
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800597 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev,
Johannes Berge45cd822009-07-02 09:58:04 +0200598 bssid, req_ie, req_ie_len,
Johannes Bergea416a72009-08-17 12:22:14 +0200599 resp_ie, resp_ie_len,
600 status, GFP_KERNEL);
Johannes Berge45cd822009-07-02 09:58:04 +0200601
Johannes Berg3d23e342009-09-29 23:27:28 +0200602#ifdef CONFIG_CFG80211_WEXT
Johannes Berge45cd822009-07-02 09:58:04 +0200603 if (wextev) {
604 if (req_ie && status == WLAN_STATUS_SUCCESS) {
605 memset(&wrqu, 0, sizeof(wrqu));
606 wrqu.data.length = req_ie_len;
Zhu Yi3409ff72009-07-20 11:47:44 +0800607 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
Johannes Berge45cd822009-07-02 09:58:04 +0200608 }
609
610 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
611 memset(&wrqu, 0, sizeof(wrqu));
612 wrqu.data.length = resp_ie_len;
613 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
614 }
615
616 memset(&wrqu, 0, sizeof(wrqu));
617 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
Johannes Bergf401a6f2009-08-07 14:51:05 +0200618 if (bssid && status == WLAN_STATUS_SUCCESS) {
Johannes Berge45cd822009-07-02 09:58:04 +0200619 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200620 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
621 wdev->wext.prev_bssid_valid = true;
622 }
Johannes Berge45cd822009-07-02 09:58:04 +0200623 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
624 }
625#endif
626
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530627 if (!bss && (status == WLAN_STATUS_SUCCESS)) {
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800628 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530629 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
630 wdev->ssid, wdev->ssid_len,
631 WLAN_CAPABILITY_ESS,
632 WLAN_CAPABILITY_ESS);
633 if (bss)
634 cfg80211_hold_bss(bss_from_pub(bss));
635 }
636
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200637 if (wdev->current_bss) {
638 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100639 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Johannes Bergdf7fc0f2009-07-29 11:23:49 +0200640 wdev->current_bss = NULL;
641 }
642
Johannes Bergfffd0932009-07-08 14:22:54 +0200643 if (status != WLAN_STATUS_SUCCESS) {
Johannes Bergfffd0932009-07-08 14:22:54 +0200644 kfree(wdev->connect_keys);
645 wdev->connect_keys = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200646 wdev->ssid_len = 0;
Johannes Bergf1940c52013-06-19 13:21:15 +0200647 if (bss) {
648 cfg80211_unhold_bss(bss_from_pub(bss));
649 cfg80211_put_bss(wdev->wiphy, bss);
650 }
Eliad Pellerc1fbb252014-04-30 15:58:13 +0300651 cfg80211_sme_free(wdev);
Johannes Bergfffd0932009-07-08 14:22:54 +0200652 return;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200653 }
Johannes Bergfffd0932009-07-08 14:22:54 +0200654
Ujjal Roy4c4d6842013-12-04 17:27:34 +0530655 if (WARN_ON(!bss))
656 return;
Johannes Bergfffd0932009-07-08 14:22:54 +0200657
Johannes Bergfffd0932009-07-08 14:22:54 +0200658 wdev->current_bss = bss_from_pub(bss);
659
Johannes Bergfffd0932009-07-08 14:22:54 +0200660 cfg80211_upload_connect_keys(wdev);
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -0700661
Johannes Berg9caf0362012-11-29 01:25:20 +0100662 rcu_read_lock();
663 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
664 if (!country_ie) {
665 rcu_read_unlock();
666 return;
667 }
668
669 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
670 rcu_read_unlock();
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -0700671
672 if (!country_ie)
673 return;
674
675 /*
676 * ieee80211_bss_get_ie() ensures we can access:
677 * - country_ie + 2, the start of the country ie data, and
678 * - and country_ie[1] which is the IE length
679 */
Luis R. Rodriguez789fd032013-10-04 18:07:24 -0700680 regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
681 country_ie + 2, country_ie[1]);
Johannes Berg9caf0362012-11-29 01:25:20 +0100682 kfree(country_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200683}
Johannes Bergf2129352009-07-01 21:26:56 +0200684
685void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
686 const u8 *req_ie, size_t req_ie_len,
687 const u8 *resp_ie, size_t resp_ie_len,
688 u16 status, gfp_t gfp)
689{
Johannes Berg667503dd2009-07-07 03:56:11 +0200690 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800691 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg667503dd2009-07-07 03:56:11 +0200692 struct cfg80211_event *ev;
693 unsigned long flags;
694
695 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
696 if (!ev)
697 return;
698
699 ev->type = EVENT_CONNECT_RESULT;
Zhu Yi16a832e2009-08-19 16:08:22 +0800700 if (bssid)
701 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
Nishant Sarmukadam7834704b2010-04-14 22:03:02 -0700702 if (req_ie_len) {
703 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
704 ev->cr.req_ie_len = req_ie_len;
705 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
706 }
707 if (resp_ie_len) {
708 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
709 ev->cr.resp_ie_len = resp_ie_len;
710 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
711 }
Johannes Berg667503dd2009-07-07 03:56:11 +0200712 ev->cr.status = status;
713
714 spin_lock_irqsave(&wdev->event_lock, flags);
715 list_add_tail(&ev->list, &wdev->event_list);
716 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100717 queue_work(cfg80211_wq, &rdev->event_work);
Johannes Bergf2129352009-07-01 21:26:56 +0200718}
Samuel Ortizb23aa672009-07-01 21:26:54 +0200719EXPORT_SYMBOL(cfg80211_connect_result);
720
Ben Greear0e3a39b2013-06-19 14:06:27 -0700721/* Consumes bss object one way or another */
Jouni Malinened9d0102011-05-16 19:40:15 +0300722void __cfg80211_roamed(struct wireless_dev *wdev,
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530723 struct cfg80211_bss *bss,
Johannes Berg667503dd2009-07-07 03:56:11 +0200724 const u8 *req_ie, size_t req_ie_len,
725 const u8 *resp_ie, size_t resp_ie_len)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200726{
Johannes Berg3d23e342009-09-29 23:27:28 +0200727#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200728 union iwreq_data wrqu;
729#endif
Johannes Berg667503dd2009-07-07 03:56:11 +0200730 ASSERT_WDEV_LOCK(wdev);
731
Johannes Berg074ac8d2010-09-16 14:58:22 +0200732 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
733 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530734 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200735
Johannes Bergceca7b72013-05-16 00:55:45 +0200736 if (WARN_ON(!wdev->current_bss))
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530737 goto out;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200738
Samuel Ortizb23aa672009-07-01 21:26:54 +0200739 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100740 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200741 wdev->current_bss = NULL;
742
Johannes Berg19957bb2009-07-02 17:20:43 +0200743 cfg80211_hold_bss(bss_from_pub(bss));
744 wdev->current_bss = bss_from_pub(bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200745
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800746 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
747 wdev->netdev, bss->bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200748 req_ie, req_ie_len, resp_ie, resp_ie_len,
749 GFP_KERNEL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200750
Johannes Berg3d23e342009-09-29 23:27:28 +0200751#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200752 if (req_ie) {
753 memset(&wrqu, 0, sizeof(wrqu));
754 wrqu.data.length = req_ie_len;
Zhu Yi3409ff72009-07-20 11:47:44 +0800755 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
Johannes Berg667503dd2009-07-07 03:56:11 +0200756 &wrqu, req_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200757 }
758
759 if (resp_ie) {
760 memset(&wrqu, 0, sizeof(wrqu));
761 wrqu.data.length = resp_ie_len;
Johannes Berg667503dd2009-07-07 03:56:11 +0200762 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
763 &wrqu, resp_ie);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200764 }
765
766 memset(&wrqu, 0, sizeof(wrqu));
767 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530768 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
769 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
Johannes Bergf401a6f2009-08-07 14:51:05 +0200770 wdev->wext.prev_bssid_valid = true;
Johannes Berg667503dd2009-07-07 03:56:11 +0200771 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200772#endif
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530773
774 return;
775out:
Johannes Berg5b112d32013-02-01 01:49:58 +0100776 cfg80211_put_bss(wdev->wiphy, bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200777}
Johannes Berg667503dd2009-07-07 03:56:11 +0200778
Jouni Malinened9d0102011-05-16 19:40:15 +0300779void cfg80211_roamed(struct net_device *dev,
780 struct ieee80211_channel *channel,
781 const u8 *bssid,
Johannes Berg667503dd2009-07-07 03:56:11 +0200782 const u8 *req_ie, size_t req_ie_len,
783 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
784{
785 struct wireless_dev *wdev = dev->ieee80211_ptr;
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530786 struct cfg80211_bss *bss;
787
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530788 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
789 wdev->ssid_len, WLAN_CAPABILITY_ESS,
790 WLAN_CAPABILITY_ESS);
791 if (WARN_ON(!bss))
792 return;
793
794 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
795 resp_ie_len, gfp);
796}
797EXPORT_SYMBOL(cfg80211_roamed);
798
Ben Greear0e3a39b2013-06-19 14:06:27 -0700799/* Consumes bss object one way or another */
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530800void cfg80211_roamed_bss(struct net_device *dev,
801 struct cfg80211_bss *bss, const u8 *req_ie,
802 size_t req_ie_len, const u8 *resp_ie,
803 size_t resp_ie_len, gfp_t gfp)
804{
805 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800806 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg667503dd2009-07-07 03:56:11 +0200807 struct cfg80211_event *ev;
808 unsigned long flags;
809
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530810 if (WARN_ON(!bss))
Johannes Berg667503dd2009-07-07 03:56:11 +0200811 return;
812
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530813 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
814 if (!ev) {
Johannes Berg5b112d32013-02-01 01:49:58 +0100815 cfg80211_put_bss(wdev->wiphy, bss);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530816 return;
817 }
818
Johannes Berg667503dd2009-07-07 03:56:11 +0200819 ev->type = EVENT_ROAMED;
Johannes Berg667503dd2009-07-07 03:56:11 +0200820 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
821 ev->rm.req_ie_len = req_ie_len;
822 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
823 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
824 ev->rm.resp_ie_len = resp_ie_len;
825 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530826 ev->rm.bss = bss;
Johannes Berg667503dd2009-07-07 03:56:11 +0200827
828 spin_lock_irqsave(&wdev->event_lock, flags);
829 list_add_tail(&ev->list, &wdev->event_list);
830 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100831 queue_work(cfg80211_wq, &rdev->event_work);
Johannes Berg667503dd2009-07-07 03:56:11 +0200832}
Vasanthakumar Thiagarajanadbde342011-12-08 14:28:47 +0530833EXPORT_SYMBOL(cfg80211_roamed_bss);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200834
Johannes Berg667503dd2009-07-07 03:56:11 +0200835void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
Johannes Berg6829c872009-07-02 09:13:27 +0200836 size_t ie_len, u16 reason, bool from_ap)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200837{
838 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800839 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Bergfffd0932009-07-08 14:22:54 +0200840 int i;
Johannes Berg3d23e342009-09-29 23:27:28 +0200841#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200842 union iwreq_data wrqu;
843#endif
844
Johannes Berg667503dd2009-07-07 03:56:11 +0200845 ASSERT_WDEV_LOCK(wdev);
846
Johannes Berg074ac8d2010-09-16 14:58:22 +0200847 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
848 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
Samuel Ortizb23aa672009-07-01 21:26:54 +0200849 return;
850
Samuel Ortizb23aa672009-07-01 21:26:54 +0200851 if (wdev->current_bss) {
852 cfg80211_unhold_bss(wdev->current_bss);
Johannes Berg5b112d32013-02-01 01:49:58 +0100853 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200854 }
855
856 wdev->current_bss = NULL;
Johannes Berg8dadadb2009-08-04 09:32:23 +0200857 wdev->ssid_len = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200858
Johannes Bergfffd0932009-07-08 14:22:54 +0200859 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
860
861 /*
862 * Delete all the keys ... pairwise keys can't really
863 * exist any more anyway, but default keys might.
864 */
865 if (rdev->ops->del_key)
866 for (i = 0; i < 6; i++)
Hila Gonene35e4d22012-06-27 17:19:42 +0300867 rdev_del_key(rdev, dev, i, false, NULL);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200868
Kyeyoon Parkfa9ffc72013-12-16 23:01:30 -0800869 rdev_set_qos_map(rdev, dev, NULL);
870
Johannes Berg3d23e342009-09-29 23:27:28 +0200871#ifdef CONFIG_CFG80211_WEXT
Samuel Ortizb23aa672009-07-01 21:26:54 +0200872 memset(&wrqu, 0, sizeof(wrqu));
873 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
874 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
Abhijeet Kolekar5f612032010-01-13 13:23:14 -0800875 wdev->wext.connect.ssid_len = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200876#endif
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -0500877
878 schedule_work(&cfg80211_disconnect_work);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200879}
880
881void cfg80211_disconnected(struct net_device *dev, u16 reason,
Johannes Bergc1e5f472014-05-19 17:53:16 +0200882 const u8 *ie, size_t ie_len, gfp_t gfp)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200883{
Johannes Berg667503dd2009-07-07 03:56:11 +0200884 struct wireless_dev *wdev = dev->ieee80211_ptr;
Zhao, Gangf26cbf42014-04-21 12:53:03 +0800885 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
Johannes Berg667503dd2009-07-07 03:56:11 +0200886 struct cfg80211_event *ev;
887 unsigned long flags;
888
889 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
890 if (!ev)
891 return;
892
893 ev->type = EVENT_DISCONNECTED;
894 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
895 ev->dc.ie_len = ie_len;
896 memcpy((void *)ev->dc.ie, ie, ie_len);
897 ev->dc.reason = reason;
898
899 spin_lock_irqsave(&wdev->event_lock, flags);
900 list_add_tail(&ev->list, &wdev->event_list);
901 spin_unlock_irqrestore(&wdev->event_lock, flags);
Alban Browaeyse60d7442009-11-25 15:13:00 +0100902 queue_work(cfg80211_wq, &rdev->event_work);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200903}
904EXPORT_SYMBOL(cfg80211_disconnected);
905
Johannes Bergceca7b72013-05-16 00:55:45 +0200906/*
907 * API calls for nl80211/wext compatibility code
908 */
Johannes Berg83739b02013-05-15 17:44:01 +0200909int cfg80211_connect(struct cfg80211_registered_device *rdev,
910 struct net_device *dev,
911 struct cfg80211_connect_params *connect,
912 struct cfg80211_cached_keys *connkeys,
913 const u8 *prev_bssid)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200914{
Samuel Ortizb23aa672009-07-01 21:26:54 +0200915 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Berg667503dd2009-07-07 03:56:11 +0200916 int err;
917
918 ASSERT_WDEV_LOCK(wdev);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200919
Johannes Bergfffd0932009-07-08 14:22:54 +0200920 if (WARN_ON(wdev->connect_keys)) {
921 kfree(wdev->connect_keys);
922 wdev->connect_keys = NULL;
923 }
924
Ben Greear7e7c8922011-11-18 11:31:59 -0800925 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
926 rdev->wiphy.ht_capa_mod_mask);
927
Johannes Bergfffd0932009-07-08 14:22:54 +0200928 if (connkeys && connkeys->def >= 0) {
929 int idx;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200930 u32 cipher;
Johannes Bergfffd0932009-07-08 14:22:54 +0200931
932 idx = connkeys->def;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200933 cipher = connkeys->params[idx].cipher;
Johannes Bergfffd0932009-07-08 14:22:54 +0200934 /* If given a WEP key we may need it for shared key auth */
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200935 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
936 cipher == WLAN_CIPHER_SUITE_WEP104) {
Johannes Bergfffd0932009-07-08 14:22:54 +0200937 connect->key_idx = idx;
938 connect->key = connkeys->params[idx].key;
939 connect->key_len = connkeys->params[idx].key_len;
Samuel Ortizbcba8ea2009-08-06 21:04:41 +0200940
941 /*
942 * If ciphers are not set (e.g. when going through
943 * iwconfig), we have to set them appropriately here.
944 */
945 if (connect->crypto.cipher_group == 0)
946 connect->crypto.cipher_group = cipher;
947
948 if (connect->crypto.n_ciphers_pairwise == 0) {
949 connect->crypto.n_ciphers_pairwise = 1;
950 connect->crypto.ciphers_pairwise[0] = cipher;
951 }
Johannes Bergfffd0932009-07-08 14:22:54 +0200952 }
953 }
954
Johannes Bergceca7b72013-05-16 00:55:45 +0200955 wdev->connect_keys = connkeys;
956 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
957 wdev->ssid_len = connect->ssid_len;
Johannes Berg6829c872009-07-02 09:13:27 +0200958
Johannes Bergceca7b72013-05-16 00:55:45 +0200959 if (!rdev->ops->connect)
960 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
961 else
Hila Gonene35e4d22012-06-27 17:19:42 +0300962 err = rdev_connect(rdev, dev, connect);
Johannes Berg6829c872009-07-02 09:13:27 +0200963
Johannes Bergceca7b72013-05-16 00:55:45 +0200964 if (err) {
965 wdev->connect_keys = NULL;
966 wdev->ssid_len = 0;
967 return err;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200968 }
Johannes Bergceca7b72013-05-16 00:55:45 +0200969
970 return 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200971}
972
Johannes Berg83739b02013-05-15 17:44:01 +0200973int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
974 struct net_device *dev, u16 reason, bool wextev)
Samuel Ortizb23aa672009-07-01 21:26:54 +0200975{
Johannes Berg6829c872009-07-02 09:13:27 +0200976 struct wireless_dev *wdev = dev->ieee80211_ptr;
Johannes Bergdee8a972013-08-13 09:23:57 +0200977 int err = 0;
Samuel Ortizb23aa672009-07-01 21:26:54 +0200978
Johannes Berg667503dd2009-07-07 03:56:11 +0200979 ASSERT_WDEV_LOCK(wdev);
980
Johannes Bergfffd0932009-07-08 14:22:54 +0200981 kfree(wdev->connect_keys);
982 wdev->connect_keys = NULL;
983
Johannes Bergdee8a972013-08-13 09:23:57 +0200984 if (wdev->conn)
Johannes Bergceca7b72013-05-16 00:55:45 +0200985 err = cfg80211_sme_disconnect(wdev, reason);
Johannes Bergdee8a972013-08-13 09:23:57 +0200986 else if (!rdev->ops->disconnect)
Johannes Bergceca7b72013-05-16 00:55:45 +0200987 cfg80211_mlme_down(rdev, dev);
Johannes Bergdee8a972013-08-13 09:23:57 +0200988 else if (wdev->current_bss)
Hila Gonene35e4d22012-06-27 17:19:42 +0300989 err = rdev_disconnect(rdev, dev, reason);
Samuel Ortizb23aa672009-07-01 21:26:54 +0200990
Johannes Bergceca7b72013-05-16 00:55:45 +0200991 return err;
Johannes Berg19957bb2009-07-02 17:20:43 +0200992}