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Remove the GPL notification from files contributed by Atheros
[thirdparty/hostap.git] / wpa_supplicant / wpa_supplicant.c
CommitLineData
6fc6879b
JM		 1/*
2 * WPA Supplicant
d93dfbd5 3 * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
6fc6879b
JM		 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 *
14 * This file implements functions for registering and unregistering
15 * %wpa_supplicant interfaces. In addition, this file contains number of
16 * functions for managing network connections.
17 */
18
19#include "includes.h"
20
21#include "common.h"
d47fa330 22#include "crypto/random.h"
7d232e23 23#include "crypto/sha1.h"
6fc6879b
JM		 24#include "eapol_supp/eapol_supp_sm.h"
25#include "eap_peer/eap.h"
3ec97afe 26#include "eap_server/eap_methods.h"
3acb5005 27#include "rsn_supp/wpa.h"
6fc6879b 28#include "eloop.h"
6fc6879b
JM		 29#include "config.h"
30#include "l2_packet/l2_packet.h"
31#include "wpa_supplicant_i.h"
2d5b792d 32#include "driver_i.h"
6fc6879b 33#include "ctrl_iface.h"
6fc6879b 34#include "pcsc_funcs.h"
90973fb2 35#include "common/version.h"
3acb5005
JM		 36#include "rsn_supp/preauth.h"
37#include "rsn_supp/pmksa_cache.h"
90973fb2 38#include "common/wpa_ctrl.h"
90973fb2 39#include "common/ieee802_11_defs.h"
72044390 40#include "p2p/p2p.h"
6fc6879b
JM		 41#include "blacklist.h"
42#include "wpas_glue.h"
116654ce 43#include "wps_supplicant.h"
11ef8d35 44#include "ibss_rsn.h"
c2a04078 45#include "sme.h"
04ea7b79 46#include "gas_query.h"
1f1b62a0 47#include "ap.h"
b22128ef 48#include "p2p_supplicant.h"
8bac466b 49#include "notify.h"
60b94c98 50#include "bgscan.h"
83922c2d 51#include "bss.h"
9ba9fa07 52#include "scan.h"
24f6497c 53#include "offchannel.h"
6fc6879b
JM		 54
55const char *wpa_supplicant_version =
56"wpa_supplicant v" VERSION_STR "\n"
57d38ddf 57"Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi> and contributors";
6fc6879b
JM		 58
59const char *wpa_supplicant_license =
331f89ff
JM		 60"This software may be distributed under the terms of the BSD license.\n"
61"See README for more details.\n"
6fc6879b
JM		 62#ifdef EAP_TLS_OPENSSL
63"\nThis product includes software developed by the OpenSSL Project\n"
64"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
65#endif /* EAP_TLS_OPENSSL */
66;
67
68#ifndef CONFIG_NO_STDOUT_DEBUG
69/* Long text divided into parts in order to fit in C89 strings size limits. */
70const char *wpa_supplicant_full_license1 =
331f89ff 71"";
6fc6879b 72const char *wpa_supplicant_full_license2 =
331f89ff 73"This software may be distributed under the terms of the BSD license.\n"
6fc6879b
JM		 74"\n"
75"Redistribution and use in source and binary forms, with or without\n"
76"modification, are permitted provided that the following conditions are\n"
77"met:\n"
78"\n";
79const char *wpa_supplicant_full_license3 =
80"1. Redistributions of source code must retain the above copyright\n"
81" notice, this list of conditions and the following disclaimer.\n"
82"\n"
83"2. Redistributions in binary form must reproduce the above copyright\n"
84" notice, this list of conditions and the following disclaimer in the\n"
85" documentation and/or other materials provided with the distribution.\n"
86"\n";
87const char *wpa_supplicant_full_license4 =
88"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
89" names of its contributors may be used to endorse or promote products\n"
90" derived from this software without specific prior written permission.\n"
91"\n"
92"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
93"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
94"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
95"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
96const char *wpa_supplicant_full_license5 =
97"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
98"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
99"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
100"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
101"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
102"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
103"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
104"\n";
105#endif /* CONFIG_NO_STDOUT_DEBUG */
106
6fc6879b
JM		 107extern int wpa_debug_level;
108extern int wpa_debug_show_keys;
109extern int wpa_debug_timestamp;
c5121837 110extern struct wpa_driver_ops *wpa_drivers[];
6fc6879b
JM		 111
112/* Configure default/group WEP keys for static WEP */
0194fedb 113int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
6fc6879b
JM		 114{
115 int i, set = 0;
116
117 for (i = 0; i < NUM_WEP_KEYS; i++) {
118 if (ssid->wep_key_len[i] == 0)
119 continue;
120
121 set = 1;
0382097e 122 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
da64c266 123 i, i == ssid->wep_tx_keyidx, NULL, 0,
6fc6879b
JM		 124 ssid->wep_key[i], ssid->wep_key_len[i]);
125 }
126
127 return set;
128}
129
130
131static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
132 struct wpa_ssid *ssid)
133{
134 u8 key[32];
135 size_t keylen;
71934751 136 enum wpa_alg alg;
6fc6879b
JM		 137 u8 seq[6] = { 0 };
138
139 /* IBSS/WPA-None uses only one key (Group) for both receiving and
140 * sending unicast and multicast packets. */
141
d7dcba70 142 if (ssid->mode != WPAS_MODE_IBSS) {
f049052b
BG		 143 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
144 "IBSS/ad-hoc) for WPA-None", ssid->mode);
6fc6879b
JM		 145 return -1;
146 }
147
148 if (!ssid->psk_set) {
f049052b
BG		 149 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
150 "WPA-None");
6fc6879b
JM		 151 return -1;
152 }
153
154 switch (wpa_s->group_cipher) {
155 case WPA_CIPHER_CCMP:
156 os_memcpy(key, ssid->psk, 16);
157 keylen = 16;
158 alg = WPA_ALG_CCMP;
159 break;
160 case WPA_CIPHER_TKIP:
161 /* WPA-None uses the same Michael MIC key for both TX and RX */
162 os_memcpy(key, ssid->psk, 16 + 8);
163 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
164 keylen = 32;
165 alg = WPA_ALG_TKIP;
166 break;
167 default:
f049052b
BG		 168 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
169 "WPA-None", wpa_s->group_cipher);
6fc6879b
JM		 170 return -1;
171 }
172
173 /* TODO: should actually remember the previously used seq#, both for TX
174 * and RX from each STA.. */
175
0382097e 176 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
6fc6879b
JM		 177}
178
179
180static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
181{
182 struct wpa_supplicant *wpa_s = eloop_ctx;
183 const u8 *bssid = wpa_s->bssid;
a8e16edc 184 if (is_zero_ether_addr(bssid))
6fc6879b
JM		 185 bssid = wpa_s->pending_bssid;
186 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
187 MAC2STR(bssid));
188 wpa_blacklist_add(wpa_s, bssid);
189 wpa_sm_notify_disassoc(wpa_s->wpa);
190 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
191 wpa_s->reassociate = 1;
48b84f18
BG		 192
193 /*
194 * If we timed out, the AP or the local radio may be busy.
195 * So, wait a second until scanning again.
196 */
197 wpa_supplicant_req_scan(wpa_s, 1, 0);
6fc6879b
JM		 198}
199
200
201/**
202 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
203 * @wpa_s: Pointer to wpa_supplicant data
204 * @sec: Number of seconds after which to time out authentication
205 * @usec: Number of microseconds after which to time out authentication
206 *
207 * This function is used to schedule a timeout for the current authentication
208 * attempt.
209 */
210void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
211 int sec, int usec)
212{
c2a04078
JM		 213 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
214 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
6fc6879b
JM		 215 return;
216
f049052b 217 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
6fc6879b
JM		 218 "%d usec", sec, usec);
219 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
220 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
221}
222
223
224/**
225 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
226 * @wpa_s: Pointer to wpa_supplicant data
227 *
228 * This function is used to cancel authentication timeout scheduled with
229 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
230 * been completed.
231 */
232void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
233{
f049052b 234 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
6fc6879b
JM		 235 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
236 wpa_blacklist_del(wpa_s, wpa_s->bssid);
237}
238
239
240/**
241 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
242 * @wpa_s: Pointer to wpa_supplicant data
243 *
244 * This function is used to configure EAPOL state machine based on the selected
245 * authentication mode.
246 */
247void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
248{
249#ifdef IEEE8021X_EAPOL
250 struct eapol_config eapol_conf;
251 struct wpa_ssid *ssid = wpa_s->current_ssid;
252
53895c3b 253#ifdef CONFIG_IBSS_RSN
d7dcba70 254 if (ssid->mode == WPAS_MODE_IBSS &&
53895c3b
JM		 255 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
256 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
257 /*
258 * RSN IBSS authentication is per-STA and we can disable the
259 * per-BSSID EAPOL authentication.
260 */
261 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
262 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
263 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
264 return;
265 }
266#endif /* CONFIG_IBSS_RSN */
267
0a40ec6a
JM		 268 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
269 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
270
6fc6879b
JM		 271 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
272 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
273 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
274 else
275 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
276
277 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
278 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
279 eapol_conf.accept_802_1x_keys = 1;
280 eapol_conf.required_keys = 0;
281 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
282 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
283 }
284 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
285 eapol_conf.required_keys |=
286 EAPOL_REQUIRE_KEY_BROADCAST;
287 }
288
c2a04078 289 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
6fc6879b 290 eapol_conf.required_keys = 0;
6fc6879b
JM		 291 }
292 if (wpa_s->conf)
293 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
294 eapol_conf.workaround = ssid->eap_workaround;
56586197
JM		 295 eapol_conf.eap_disabled =
296 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
ad08c363
JM		 297 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
298 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
6fc6879b
JM		 299 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
300#endif /* IEEE8021X_EAPOL */
301}
302
303
304/**
305 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
306 * @wpa_s: Pointer to wpa_supplicant data
307 * @ssid: Configuration data for the network
308 *
309 * This function is used to configure WPA state machine and related parameters
310 * to a mode where WPA is not enabled. This is called as part of the
311 * authentication configuration when the selected network does not use WPA.
312 */
313void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
314 struct wpa_ssid *ssid)
315{
316 int i;
317
ad08c363
JM		 318 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
319 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
320 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
6fc6879b
JM		 321 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
322 else
323 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
324 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
325 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
326 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
327 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
328 wpa_s->group_cipher = WPA_CIPHER_NONE;
329 wpa_s->mgmt_group_cipher = 0;
330
331 for (i = 0; i < NUM_WEP_KEYS; i++) {
332 if (ssid->wep_key_len[i] > 5) {
333 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
334 wpa_s->group_cipher = WPA_CIPHER_WEP104;
335 break;
336 } else if (ssid->wep_key_len[i] > 0) {
337 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
338 wpa_s->group_cipher = WPA_CIPHER_WEP40;
339 break;
340 }
341 }
342
343 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
344 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
345 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
346 wpa_s->pairwise_cipher);
347 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
348#ifdef CONFIG_IEEE80211W
349 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
350 wpa_s->mgmt_group_cipher);
351#endif /* CONFIG_IEEE80211W */
352
353 pmksa_cache_clear_current(wpa_s->wpa);
354}
355
356
6bf731e8
CL		 357static void free_hw_features(struct wpa_supplicant *wpa_s)
358{
359 int i;
360 if (wpa_s->hw.modes == NULL)
361 return;
362
363 for (i = 0; i < wpa_s->hw.num_modes; i++) {
364 os_free(wpa_s->hw.modes[i].channels);
365 os_free(wpa_s->hw.modes[i].rates);
366 }
367
368 os_free(wpa_s->hw.modes);
369 wpa_s->hw.modes = NULL;
370}
371
372
6fc6879b
JM		 373static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
374{
60b94c98 375 bgscan_deinit(wpa_s);
6fc6879b
JM		 376 scard_deinit(wpa_s->scard);
377 wpa_s->scard = NULL;
378 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
379 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
380 l2_packet_deinit(wpa_s->l2);
381 wpa_s->l2 = NULL;
382 if (wpa_s->l2_br) {
383 l2_packet_deinit(wpa_s->l2_br);
384 wpa_s->l2_br = NULL;
385 }
386
6fc6879b 387 if (wpa_s->conf != NULL) {
8e56d189
JM		 388 struct wpa_ssid *ssid;
389 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
390 wpas_notify_network_removed(wpa_s, ssid);
6fc6879b
JM		 391 }
392
393 os_free(wpa_s->confname);
394 wpa_s->confname = NULL;
395
396 wpa_sm_set_eapol(wpa_s->wpa, NULL);
397 eapol_sm_deinit(wpa_s->eapol);
398 wpa_s->eapol = NULL;
399
400 rsn_preauth_deinit(wpa_s->wpa);
401
281ff0aa
GP		 402#ifdef CONFIG_TDLS
403 wpa_tdls_deinit(wpa_s->wpa);
404#endif /* CONFIG_TDLS */
405
6fc6879b
JM		 406 pmksa_candidate_free(wpa_s->wpa);
407 wpa_sm_deinit(wpa_s->wpa);
408 wpa_s->wpa = NULL;
409 wpa_blacklist_clear(wpa_s);
410
83922c2d 411 wpa_bss_deinit(wpa_s);
6fc6879b
JM		 412
413 wpa_supplicant_cancel_scan(wpa_s);
414 wpa_supplicant_cancel_auth_timeout(wpa_s);
01a17491
JM		 415 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL);
416#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
417 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report,
418 wpa_s, NULL);
419#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
6fc6879b 420
116654ce 421 wpas_wps_deinit(wpa_s);
11ef8d35 422
1ff73338
JM		 423 wpabuf_free(wpa_s->pending_eapol_rx);
424 wpa_s->pending_eapol_rx = NULL;
425
11ef8d35
JM		 426#ifdef CONFIG_IBSS_RSN
427 ibss_rsn_deinit(wpa_s->ibss_rsn);
428 wpa_s->ibss_rsn = NULL;
429#endif /* CONFIG_IBSS_RSN */
c2a04078 430
e29853bb 431 sme_deinit(wpa_s);
2d5b792d
JM		 432
433#ifdef CONFIG_AP
434 wpa_supplicant_ap_deinit(wpa_s);
435#endif /* CONFIG_AP */
b22128ef
JM		 436
437#ifdef CONFIG_P2P
438 wpas_p2p_deinit(wpa_s);
439#endif /* CONFIG_P2P */
f47d639d 440
24f6497c
JM		 441#ifdef CONFIG_OFFCHANNEL
442 offchannel_deinit(wpa_s);
443#endif /* CONFIG_OFFCHANNEL */
444
a4cba8f1
LC		 445 wpa_supplicant_cancel_sched_scan(wpa_s);
446
f47d639d
JM		 447 os_free(wpa_s->next_scan_freqs);
448 wpa_s->next_scan_freqs = NULL;
04ea7b79
JM		 449
450 gas_query_deinit(wpa_s->gas);
451 wpa_s->gas = NULL;
6bf731e8
CL		 452
453 free_hw_features(wpa_s);
6fc6879b
JM		 454}
455
456
457/**
458 * wpa_clear_keys - Clear keys configured for the driver
459 * @wpa_s: Pointer to wpa_supplicant data
460 * @addr: Previously used BSSID or %NULL if not available
461 *
462 * This function clears the encryption keys that has been previously configured
463 * for the driver.
464 */
465void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
466{
6fc6879b
JM		 467 if (wpa_s->keys_cleared) {
468 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
469 * timing issues with keys being cleared just before new keys
470 * are set or just after association or something similar. This
471 * shows up in group key handshake failing often because of the
472 * client not receiving the first encrypted packets correctly.
473 * Skipping some of the extra key clearing steps seems to help
474 * in completing group key handshake more reliably. */
f049052b
BG		 475 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - "
476 "skip key clearing");
6fc6879b
JM		 477 return;
478 }
479
480 /* MLME-DELETEKEYS.request */
0382097e
JM		 481 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0);
482 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0);
483 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0);
484 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0);
0e27f655 485#ifdef CONFIG_IEEE80211W
0382097e
JM		 486 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0);
487 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0);
0e27f655 488#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 489 if (addr) {
490 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
491 0);
492 /* MLME-SETPROTECTION.request(None) */
493 wpa_drv_mlme_setprotection(
494 wpa_s, addr,
495 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
496 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
497 }
498 wpa_s->keys_cleared = 1;
499}
500
501
502/**
503 * wpa_supplicant_state_txt - Get the connection state name as a text string
504 * @state: State (wpa_state; WPA_*)
505 * Returns: The state name as a printable text string
506 */
71934751 507const char * wpa_supplicant_state_txt(enum wpa_states state)
6fc6879b
JM		 508{
509 switch (state) {
510 case WPA_DISCONNECTED:
511 return "DISCONNECTED";
512 case WPA_INACTIVE:
513 return "INACTIVE";
8401a6b0
JM		 514 case WPA_INTERFACE_DISABLED:
515 return "INTERFACE_DISABLED";
6fc6879b
JM		 516 case WPA_SCANNING:
517 return "SCANNING";
c2a04078
JM		 518 case WPA_AUTHENTICATING:
519 return "AUTHENTICATING";
6fc6879b
JM		 520 case WPA_ASSOCIATING:
521 return "ASSOCIATING";
522 case WPA_ASSOCIATED:
523 return "ASSOCIATED";
524 case WPA_4WAY_HANDSHAKE:
525 return "4WAY_HANDSHAKE";
526 case WPA_GROUP_HANDSHAKE:
527 return "GROUP_HANDSHAKE";
528 case WPA_COMPLETED:
529 return "COMPLETED";
530 default:
531 return "UNKNOWN";
532 }
533}
534
535
cfe53c9a
PS		 536#ifdef CONFIG_BGSCAN
537
538static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
539{
0096c427
JM		 540 if (wpas_driver_bss_selection(wpa_s))
541 return;
cfe53c9a
PS		 542 if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
543 return;
544
545 bgscan_deinit(wpa_s);
546 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
547 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
548 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
549 "bgscan");
550 /*
551 * Live without bgscan; it is only used as a roaming
552 * optimization, so the initial connection is not
553 * affected.
554 */
555 } else
556 wpa_s->bgscan_ssid = wpa_s->current_ssid;
557 } else
558 wpa_s->bgscan_ssid = NULL;
559}
560
561
562static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
563{
564 if (wpa_s->bgscan_ssid != NULL) {
565 bgscan_deinit(wpa_s);
566 wpa_s->bgscan_ssid = NULL;
567 }
568}
569
570#endif /* CONFIG_BGSCAN */
571
572
6fc6879b
JM		 573/**
574 * wpa_supplicant_set_state - Set current connection state
575 * @wpa_s: Pointer to wpa_supplicant data
576 * @state: The new connection state
577 *
578 * This function is called whenever the connection state changes, e.g.,
579 * association is completed for WPA/WPA2 4-Way Handshake is started.
580 */
71934751
JM		 581void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
582 enum wpa_states state)
6fc6879b 583{
27f43d8d
MH		 584 enum wpa_states old_state = wpa_s->wpa_state;
585
f049052b
BG		 586 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
587 wpa_supplicant_state_txt(wpa_s->wpa_state),
588 wpa_supplicant_state_txt(state));
6fc6879b 589
cb8564b1
DW		 590 if (state != WPA_SCANNING)
591 wpa_supplicant_notify_scanning(wpa_s, 0);
592
6fc6879b
JM		 593 if (state == WPA_COMPLETED && wpa_s->new_connection) {
594#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
595 struct wpa_ssid *ssid = wpa_s->current_ssid;
596 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
597 MACSTR " completed %s [id=%d id_str=%s]",
598 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
599 "(reauth)" : "(auth)",
600 ssid ? ssid->id : -1,
601 ssid && ssid->id_str ? ssid->id_str : "");
602#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
603 wpa_s->new_connection = 0;
604 wpa_s->reassociated_connection = 1;
605 wpa_drv_set_operstate(wpa_s, 1);
99ac2913
FF		 606#ifndef IEEE8021X_EAPOL
607 wpa_drv_set_supp_port(wpa_s, 1);
608#endif /* IEEE8021X_EAPOL */
17a4734d 609 wpa_s->after_wps = 0;
b22128ef
JM		 610#ifdef CONFIG_P2P
611 wpas_p2p_completed(wpa_s);
612#endif /* CONFIG_P2P */
6fc6879b
JM		 613 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
614 state == WPA_ASSOCIATED) {
615 wpa_s->new_connection = 1;
616 wpa_drv_set_operstate(wpa_s, 0);
99ac2913
FF		 617#ifndef IEEE8021X_EAPOL
618 wpa_drv_set_supp_port(wpa_s, 0);
619#endif /* IEEE8021X_EAPOL */
6fc6879b
JM		 620 }
621 wpa_s->wpa_state = state;
27f43d8d 622
cfe53c9a
PS		 623#ifdef CONFIG_BGSCAN
624 if (state == WPA_COMPLETED)
625 wpa_supplicant_start_bgscan(wpa_s);
626 else
627 wpa_supplicant_stop_bgscan(wpa_s);
628#endif /* CONFIG_BGSCAN */
629
5bbf9f10 630 if (wpa_s->wpa_state != old_state) {
27f43d8d 631 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
5bbf9f10
PS		 632
633 if (wpa_s->wpa_state == WPA_COMPLETED ||
634 old_state == WPA_COMPLETED)
635 wpas_notify_auth_changed(wpa_s);
636 }
6fc6879b
JM		 637}
638
639
1a1bf008
JM		 640void wpa_supplicant_terminate_proc(struct wpa_global *global)
641{
642 int pending = 0;
643#ifdef CONFIG_WPS
644 struct wpa_supplicant *wpa_s = global->ifaces;
645 while (wpa_s) {
646 if (wpas_wps_terminate_pending(wpa_s) == 1)
647 pending = 1;
648 wpa_s = wpa_s->next;
649 }
650#endif /* CONFIG_WPS */
651 if (pending)
652 return;
653 eloop_terminate();
654}
655
656
0456ea16 657static void wpa_supplicant_terminate(int sig, void *signal_ctx)
6fc6879b 658{
0456ea16 659 struct wpa_global *global = signal_ctx;
1a1bf008 660 wpa_supplicant_terminate_proc(global);
6fc6879b
JM		 661}
662
663
b22128ef 664void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
6fc6879b 665{
71934751 666 enum wpa_states old_state = wpa_s->wpa_state;
27f43d8d 667
6fc6879b
JM		 668 wpa_s->pairwise_cipher = 0;
669 wpa_s->group_cipher = 0;
670 wpa_s->mgmt_group_cipher = 0;
671 wpa_s->key_mgmt = 0;
8401a6b0
JM		 672 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
673 wpa_s->wpa_state = WPA_DISCONNECTED;
27f43d8d
MH		 674
675 if (wpa_s->wpa_state != old_state)
676 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
6fc6879b
JM		 677}
678
679
680/**
681 * wpa_supplicant_reload_configuration - Reload configuration data
682 * @wpa_s: Pointer to wpa_supplicant data
683 * Returns: 0 on success or -1 if configuration parsing failed
684 *
685 * This function can be used to request that the configuration data is reloaded
686 * (e.g., after configuration file change). This function is reloading
687 * configuration only for one interface, so this may need to be called multiple
688 * times if %wpa_supplicant is controlling multiple interfaces and all
689 * interfaces need reconfiguration.
690 */
691int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
692{
693 struct wpa_config *conf;
694 int reconf_ctrl;
8bac466b
JM		 695 int old_ap_scan;
696
6fc6879b
JM		 697 if (wpa_s->confname == NULL)
698 return -1;
699 conf = wpa_config_read(wpa_s->confname);
700 if (conf == NULL) {
701 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
702 "file '%s' - exiting", wpa_s->confname);
703 return -1;
704 }
611aea7d 705 conf->changed_parameters = (unsigned int) -1;
6fc6879b
JM		 706
707 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
708 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
709 os_strcmp(conf->ctrl_interface,
710 wpa_s->conf->ctrl_interface) != 0);
711
712 if (reconf_ctrl && wpa_s->ctrl_iface) {
713 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
714 wpa_s->ctrl_iface = NULL;
715 }
716
717 eapol_sm_invalidate_cached_session(wpa_s->eapol);
7b7ce8aa
JM		 718 if (wpa_s->current_ssid) {
719 wpa_supplicant_deauthenticate(wpa_s,
720 WLAN_REASON_DEAUTH_LEAVING);
721 }
8bac466b 722
6fc6879b
JM		 723 /*
724 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
725 * pkcs11_engine_path, pkcs11_module_path.
726 */
56586197 727 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
6fc6879b
JM		 728 /*
729 * Clear forced success to clear EAP state for next
730 * authentication.
731 */
732 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
733 }
734 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
735 wpa_sm_set_config(wpa_s->wpa, NULL);
d8a790b9 736 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
6fc6879b
JM		 737 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
738 rsn_preauth_deinit(wpa_s->wpa);
8bac466b
JM		 739
740 old_ap_scan = wpa_s->conf->ap_scan;
6fc6879b
JM		 741 wpa_config_free(wpa_s->conf);
742 wpa_s->conf = conf;
8bac466b
JM		 743 if (old_ap_scan != wpa_s->conf->ap_scan)
744 wpas_notify_ap_scan_changed(wpa_s);
745
6fc6879b
JM		 746 if (reconf_ctrl)
747 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
748
611aea7d
JM		 749 wpa_supplicant_update_config(wpa_s);
750
6fc6879b 751 wpa_supplicant_clear_status(wpa_s);
43a38635
JM		 752 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
753 wpa_s->reassociate = 1;
754 wpa_supplicant_req_scan(wpa_s, 0, 0);
755 }
f049052b 756 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
6fc6879b
JM		 757 return 0;
758}
759
760
0456ea16 761static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
6fc6879b 762{
0456ea16 763 struct wpa_global *global = signal_ctx;
6fc6879b 764 struct wpa_supplicant *wpa_s;
6fc6879b 765 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
f049052b
BG		 766 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
767 sig);
6fc6879b 768 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
1a1bf008 769 wpa_supplicant_terminate_proc(global);
6fc6879b
JM		 770 }
771 }
772}
773
774
508545f3 775enum wpa_cipher cipher_suite2driver(int cipher)
6fc6879b
JM		 776{
777 switch (cipher) {
778 case WPA_CIPHER_NONE:
779 return CIPHER_NONE;
780 case WPA_CIPHER_WEP40:
781 return CIPHER_WEP40;
782 case WPA_CIPHER_WEP104:
783 return CIPHER_WEP104;
784 case WPA_CIPHER_CCMP:
785 return CIPHER_CCMP;
786 case WPA_CIPHER_TKIP:
787 default:
788 return CIPHER_TKIP;
789 }
790}
791
792
508545f3 793enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
6fc6879b
JM		 794{
795 switch (key_mgmt) {
796 case WPA_KEY_MGMT_NONE:
797 return KEY_MGMT_NONE;
798 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
799 return KEY_MGMT_802_1X_NO_WPA;
800 case WPA_KEY_MGMT_IEEE8021X:
801 return KEY_MGMT_802_1X;
802 case WPA_KEY_MGMT_WPA_NONE:
803 return KEY_MGMT_WPA_NONE;
804 case WPA_KEY_MGMT_FT_IEEE8021X:
805 return KEY_MGMT_FT_802_1X;
806 case WPA_KEY_MGMT_FT_PSK:
807 return KEY_MGMT_FT_PSK;
56586197
JM		 808 case WPA_KEY_MGMT_IEEE8021X_SHA256:
809 return KEY_MGMT_802_1X_SHA256;
810 case WPA_KEY_MGMT_PSK_SHA256:
811 return KEY_MGMT_PSK_SHA256;
ad08c363
JM		 812 case WPA_KEY_MGMT_WPS:
813 return KEY_MGMT_WPS;
6fc6879b
JM		 814 case WPA_KEY_MGMT_PSK:
815 default:
816 return KEY_MGMT_PSK;
817 }
818}
819
820
821static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
822 struct wpa_ssid *ssid,
823 struct wpa_ie_data *ie)
824{
825 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
826 if (ret) {
827 if (ret == -2) {
828 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
829 "from association info");
830 }
831 return -1;
832 }
833
f049052b
BG		 834 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
835 "cipher suites");
6fc6879b
JM		 836 if (!(ie->group_cipher & ssid->group_cipher)) {
837 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
838 "cipher 0x%x (mask 0x%x) - reject",
839 ie->group_cipher, ssid->group_cipher);
840 return -1;
841 }
842 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
843 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
844 "cipher 0x%x (mask 0x%x) - reject",
845 ie->pairwise_cipher, ssid->pairwise_cipher);
846 return -1;
847 }
848 if (!(ie->key_mgmt & ssid->key_mgmt)) {
849 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
850 "management 0x%x (mask 0x%x) - reject",
851 ie->key_mgmt, ssid->key_mgmt);
852 return -1;
853 }
854
855#ifdef CONFIG_IEEE80211W
0b60b0aa 856 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
70f8cc8e 857 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
6fc6879b
JM		 858 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
859 "that does not support management frame protection - "
860 "reject");
861 return -1;
862 }
863#endif /* CONFIG_IEEE80211W */
864
865 return 0;
866}
867
868
869/**
870 * wpa_supplicant_set_suites - Set authentication and encryption parameters
871 * @wpa_s: Pointer to wpa_supplicant data
872 * @bss: Scan results for the selected BSS, or %NULL if not available
873 * @ssid: Configuration data for the selected network
874 * @wpa_ie: Buffer for the WPA/RSN IE
875 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
876 * used buffer length in case the functions returns success.
877 * Returns: 0 on success or -1 on failure
878 *
879 * This function is used to configure authentication and encryption parameters
880 * based on the network configuration and scan result for the selected BSS (if
881 * available).
882 */
883int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
6fa81a3b 884 struct wpa_bss *bss, struct wpa_ssid *ssid,
6fc6879b
JM		 885 u8 *wpa_ie, size_t *wpa_ie_len)
886{
887 struct wpa_ie_data ie;
888 int sel, proto;
889 const u8 *bss_wpa, *bss_rsn;
890
891 if (bss) {
6fa81a3b
JM		 892 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
893 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
6fc6879b
JM		 894 } else
895 bss_wpa = bss_rsn = NULL;
896
897 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
898 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
899 (ie.group_cipher & ssid->group_cipher) &&
900 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
901 (ie.key_mgmt & ssid->key_mgmt)) {
f049052b 902 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
6fc6879b
JM		 903 proto = WPA_PROTO_RSN;
904 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
905 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
906 (ie.group_cipher & ssid->group_cipher) &&
907 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
908 (ie.key_mgmt & ssid->key_mgmt)) {
f049052b 909 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
6fc6879b
JM		 910 proto = WPA_PROTO_WPA;
911 } else if (bss) {
912 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
913 return -1;
914 } else {
915 if (ssid->proto & WPA_PROTO_RSN)
916 proto = WPA_PROTO_RSN;
917 else
918 proto = WPA_PROTO_WPA;
919 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
920 os_memset(&ie, 0, sizeof(ie));
921 ie.group_cipher = ssid->group_cipher;
922 ie.pairwise_cipher = ssid->pairwise_cipher;
923 ie.key_mgmt = ssid->key_mgmt;
924#ifdef CONFIG_IEEE80211W
925 ie.mgmt_group_cipher =
70f8cc8e 926 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
6fc6879b
JM		 927 WPA_CIPHER_AES_128_CMAC : 0;
928#endif /* CONFIG_IEEE80211W */
f049052b
BG		 929 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
930 "based on configuration");
6fc6879b
JM		 931 } else
932 proto = ie.proto;
933 }
934
f049052b
BG		 935 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
936 "pairwise %d key_mgmt %d proto %d",
937 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
6fc6879b
JM		 938#ifdef CONFIG_IEEE80211W
939 if (ssid->ieee80211w) {
f049052b
BG		 940 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
941 ie.mgmt_group_cipher);
6fc6879b
JM		 942 }
943#endif /* CONFIG_IEEE80211W */
944
64fa840a 945 wpa_s->wpa_proto = proto;
6fc6879b
JM		 946 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
947 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
948 !!(ssid->proto & WPA_PROTO_RSN));
949
950 if (bss || !wpa_s->ap_ies_from_associnfo) {
951 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
952 bss_wpa ? 2 + bss_wpa[1] : 0) ||
953 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
954 bss_rsn ? 2 + bss_rsn[1] : 0))
955 return -1;
956 }
957
958 sel = ie.group_cipher & ssid->group_cipher;
959 if (sel & WPA_CIPHER_CCMP) {
960 wpa_s->group_cipher = WPA_CIPHER_CCMP;
f049052b 961 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
6fc6879b
JM		 962 } else if (sel & WPA_CIPHER_TKIP) {
963 wpa_s->group_cipher = WPA_CIPHER_TKIP;
f049052b 964 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
6fc6879b
JM		 965 } else if (sel & WPA_CIPHER_WEP104) {
966 wpa_s->group_cipher = WPA_CIPHER_WEP104;
f049052b 967 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
6fc6879b
JM		 968 } else if (sel & WPA_CIPHER_WEP40) {
969 wpa_s->group_cipher = WPA_CIPHER_WEP40;
f049052b 970 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
6fc6879b 971 } else {
f049052b
BG		 972 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
973 "cipher");
6fc6879b
JM		 974 return -1;
975 }
976
977 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
978 if (sel & WPA_CIPHER_CCMP) {
979 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
f049052b 980 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
6fc6879b
JM		 981 } else if (sel & WPA_CIPHER_TKIP) {
982 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
f049052b 983 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
6fc6879b
JM		 984 } else if (sel & WPA_CIPHER_NONE) {
985 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
f049052b 986 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
6fc6879b 987 } else {
f049052b
BG		 988 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
989 "cipher");
6fc6879b
JM		 990 return -1;
991 }
992
993 sel = ie.key_mgmt & ssid->key_mgmt;
994 if (0) {
995#ifdef CONFIG_IEEE80211R
996 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
997 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
f049052b 998 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
6fc6879b
JM		 999 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
1000 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
f049052b 1001 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
6fc6879b 1002#endif /* CONFIG_IEEE80211R */
56586197
JM		 1003#ifdef CONFIG_IEEE80211W
1004 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
1005 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
f049052b 1006 wpa_dbg(wpa_s, MSG_DEBUG,
56586197
JM		 1007 "WPA: using KEY_MGMT 802.1X with SHA256");
1008 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1009 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
f049052b 1010 wpa_dbg(wpa_s, MSG_DEBUG,
56586197
JM		 1011 "WPA: using KEY_MGMT PSK with SHA256");
1012#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 1013 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1014 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
f049052b 1015 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
6fc6879b
JM		 1016 } else if (sel & WPA_KEY_MGMT_PSK) {
1017 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
f049052b 1018 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
6fc6879b
JM		 1019 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1020 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
f049052b 1021 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
6fc6879b 1022 } else {
f049052b
BG		 1023 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1024 "authenticated key management type");
6fc6879b
JM		 1025 return -1;
1026 }
1027
1028 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1029 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1030 wpa_s->pairwise_cipher);
1031 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1032
1033#ifdef CONFIG_IEEE80211W
1034 sel = ie.mgmt_group_cipher;
70f8cc8e 1035 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION ||
0b60b0aa 1036 !(ie.capabilities & WPA_CAPABILITY_MFPC))
6fc6879b
JM		 1037 sel = 0;
1038 if (sel & WPA_CIPHER_AES_128_CMAC) {
1039 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
f049052b 1040 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
6fc6879b
JM		 1041 "AES-128-CMAC");
1042 } else {
1043 wpa_s->mgmt_group_cipher = 0;
f049052b 1044 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
6fc6879b
JM		 1045 }
1046 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1047 wpa_s->mgmt_group_cipher);
e820cf95 1048 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w);
6fc6879b
JM		 1049#endif /* CONFIG_IEEE80211W */
1050
1051 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
f049052b 1052 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
6fc6879b
JM		 1053 return -1;
1054 }
1055
0bf927a0 1056 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
6fc6879b 1057 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
7d232e23
ZC		 1058#ifndef CONFIG_NO_PBKDF2
1059 if (bss && ssid->bssid_set && ssid->ssid_len == 0 &&
1060 ssid->passphrase) {
1061 u8 psk[PMK_LEN];
1062 pbkdf2_sha1(ssid->passphrase, (char *) bss->ssid,
1063 bss->ssid_len, 4096, psk, PMK_LEN);
1064 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
1065 psk, PMK_LEN);
1066 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1067 }
1068#endif /* CONFIG_NO_PBKDF2 */
1069 } else
6fc6879b
JM		 1070 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1071
1072 return 0;
1073}
1074
1075
1076/**
1077 * wpa_supplicant_associate - Request association
1078 * @wpa_s: Pointer to wpa_supplicant data
1079 * @bss: Scan results for the selected BSS, or %NULL if not available
1080 * @ssid: Configuration data for the selected network
1081 *
1082 * This function is used to request %wpa_supplicant to associate with a BSS.
1083 */
1084void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
6fa81a3b 1085 struct wpa_bss *bss, struct wpa_ssid *ssid)
6fc6879b 1086{
5f3a6aa0 1087 u8 wpa_ie[200];
6fc6879b 1088 size_t wpa_ie_len;
8bac466b 1089 int use_crypt, ret, i, bssid_changed;
abd9fafa 1090 int algs = WPA_AUTH_ALG_OPEN;
71934751 1091 enum wpa_cipher cipher_pairwise, cipher_group;
6fc6879b
JM		 1092 struct wpa_driver_associate_params params;
1093 int wep_keys_set = 0;
1094 struct wpa_driver_capa capa;
1095 int assoc_failed = 0;
8bac466b 1096 struct wpa_ssid *old_ssid;
80e8a5ee
BG		 1097#ifdef CONFIG_HT_OVERRIDES
1098 struct ieee80211_ht_capabilities htcaps;
1099 struct ieee80211_ht_capabilities htcaps_mask;
1100#endif /* CONFIG_HT_OVERRIDES */
6fc6879b 1101
78177a00
JM		 1102#ifdef CONFIG_IBSS_RSN
1103 ibss_rsn_deinit(wpa_s->ibss_rsn);
1104 wpa_s->ibss_rsn = NULL;
1105#endif /* CONFIG_IBSS_RSN */
1106
2c5d725c
JM		 1107 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1108 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1581b38b
JM		 1109#ifdef CONFIG_AP
1110 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
f049052b
BG		 1111 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1112 "mode");
1581b38b
JM		 1113 return;
1114 }
1115 wpa_supplicant_create_ap(wpa_s, ssid);
8f770587 1116 wpa_s->current_bss = bss;
1581b38b 1117#else /* CONFIG_AP */
f049052b
BG		 1118 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1119 "the build");
1581b38b
JM		 1120#endif /* CONFIG_AP */
1121 return;
1122 }
1123
52c9e6f3 1124#ifdef CONFIG_TDLS
95cb2d88
JM		 1125 if (bss)
1126 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1127 bss->ie_len);
52c9e6f3
JM		 1128#endif /* CONFIG_TDLS */
1129
5cc4d64b
JM		 1130 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1131 ssid->mode == IEEE80211_MODE_INFRA) {
c2a04078
JM		 1132 sme_authenticate(wpa_s, bss, ssid);
1133 return;
1134 }
1135
0c80427d 1136 os_memset(&params, 0, sizeof(params));
6fc6879b 1137 wpa_s->reassociate = 0;
22628eca 1138 if (bss && !wpas_driver_bss_selection(wpa_s)) {
6fc6879b 1139#ifdef CONFIG_IEEE80211R
6fa81a3b 1140 const u8 *ie, *md = NULL;
6fc6879b 1141#endif /* CONFIG_IEEE80211R */
6fc6879b
JM		 1142 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1143 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
6fa81a3b 1144 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
8bac466b 1145 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
6fc6879b
JM		 1146 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1147 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 1148 if (bssid_changed)
1149 wpas_notify_bssid_changed(wpa_s);
6fc6879b 1150#ifdef CONFIG_IEEE80211R
6fa81a3b 1151 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
6fc6879b
JM		 1152 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1153 md = ie + 2;
e7846b68 1154 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
91a05482
JM		 1155 if (md) {
1156 /* Prepare for the next transition */
76b7981d 1157 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
91a05482 1158 }
6fc6879b 1159#endif /* CONFIG_IEEE80211R */
24c23d1b
JM		 1160#ifdef CONFIG_WPS
1161 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1162 wpa_s->conf->ap_scan == 2 &&
1163 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1164 /* Use ap_scan==1 style network selection to find the network
1165 */
1166 wpa_s->scan_req = 2;
1167 wpa_s->reassociate = 1;
1168 wpa_supplicant_req_scan(wpa_s, 0, 0);
1169 return;
1170#endif /* CONFIG_WPS */
6fc6879b
JM		 1171 } else {
1172 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1173 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1174 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1175 }
a4cba8f1 1176 wpa_supplicant_cancel_sched_scan(wpa_s);
6fc6879b
JM		 1177 wpa_supplicant_cancel_scan(wpa_s);
1178
1179 /* Starting new association, so clear the possibly used WPA IE from the
1180 * previous association. */
1181 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1182
1183#ifdef IEEE8021X_EAPOL
1184 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1185 if (ssid->leap) {
1186 if (ssid->non_leap == 0)
abd9fafa 1187 algs = WPA_AUTH_ALG_LEAP;
6fc6879b 1188 else
abd9fafa 1189 algs |= WPA_AUTH_ALG_LEAP;
6fc6879b
JM		 1190 }
1191 }
1192#endif /* IEEE8021X_EAPOL */
f049052b 1193 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
6fc6879b 1194 if (ssid->auth_alg) {
abd9fafa 1195 algs = ssid->auth_alg;
f049052b
BG		 1196 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
1197 "0x%x", algs);
6fc6879b 1198 }
6fc6879b 1199
6fa81a3b
JM		 1200 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1201 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 1202 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
6fc6879b
JM		 1203 int try_opportunistic;
1204 try_opportunistic = ssid->proactive_key_caching &&
1205 (ssid->proto & WPA_PROTO_RSN);
1206 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1207 wpa_s->current_ssid,
1208 try_opportunistic) == 0)
1209 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1210 wpa_ie_len = sizeof(wpa_ie);
1211 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1212 wpa_ie, &wpa_ie_len)) {
f049052b
BG		 1213 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1214 "key management and encryption suites");
6fc6879b
JM		 1215 return;
1216 }
0bf927a0 1217 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
6fc6879b
JM		 1218 wpa_ie_len = sizeof(wpa_ie);
1219 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1220 wpa_ie, &wpa_ie_len)) {
f049052b
BG		 1221 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1222 "key management and encryption suites (no "
1223 "scan results)");
6fc6879b
JM		 1224 return;
1225 }
ad08c363
JM		 1226#ifdef CONFIG_WPS
1227 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
b01c18a8
JM		 1228 struct wpabuf *wps_ie;
1229 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
ad08c363
JM		 1230 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1231 wpa_ie_len = wpabuf_len(wps_ie);
1232 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
24386985
JM		 1233 } else
1234 wpa_ie_len = 0;
ad08c363
JM		 1235 wpabuf_free(wps_ie);
1236 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
0c80427d
JM		 1237 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1238 params.wps = WPS_MODE_PRIVACY;
1239 else
1240 params.wps = WPS_MODE_OPEN;
cf546f1a 1241 wpa_s->wpa_proto = 0;
ad08c363 1242#endif /* CONFIG_WPS */
6fc6879b
JM		 1243 } else {
1244 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1245 wpa_ie_len = 0;
cf546f1a 1246 wpa_s->wpa_proto = 0;
6fc6879b
JM		 1247 }
1248
5f3a6aa0
JM		 1249#ifdef CONFIG_P2P
1250 if (wpa_s->global->p2p) {
1251 u8 *pos;
1252 size_t len;
1253 int res;
1254 int p2p_group;
1255 p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
1256 pos = wpa_ie + wpa_ie_len;
1257 len = sizeof(wpa_ie) - wpa_ie_len;
4c08c0bd 1258 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
5f3a6aa0
JM		 1259 if (res >= 0)
1260 wpa_ie_len += res;
1261 }
72044390
JM		 1262
1263 wpa_s->cross_connect_disallowed = 0;
1264 if (bss) {
1265 struct wpabuf *p2p;
1266 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1267 if (p2p) {
1268 wpa_s->cross_connect_disallowed =
1269 p2p_get_cross_connect_disallowed(p2p);
1270 wpabuf_free(p2p);
f049052b
BG		 1271 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
1272 "connection",
1273 wpa_s->cross_connect_disallowed ?
1274 "disallows" : "allows");
72044390
JM		 1275 }
1276 }
5f3a6aa0
JM		 1277#endif /* CONFIG_P2P */
1278
92cbcf91
JM		 1279#ifdef CONFIG_INTERWORKING
1280 if (wpa_s->conf->interworking) {
1281 u8 *pos = wpa_ie;
1282 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN)
1283 pos += 2 + pos[1];
1284 os_memmove(pos + 6, pos, wpa_ie_len - (pos - wpa_ie));
1285 wpa_ie_len += 6;
1286 *pos++ = WLAN_EID_EXT_CAPAB;
1287 *pos++ = 4;
1288 *pos++ = 0x00;
1289 *pos++ = 0x00;
1290 *pos++ = 0x00;
1291 *pos++ = 0x80; /* Bit 31 - Interworking */
1292 }
1293#endif /* CONFIG_INTERWORKING */
1294
6fc6879b
JM		 1295 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1296 use_crypt = 1;
1297 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1298 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1299 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1300 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1301 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1302 use_crypt = 0;
1303 if (wpa_set_wep_keys(wpa_s, ssid)) {
1304 use_crypt = 1;
1305 wep_keys_set = 1;
1306 }
1307 }
ad08c363
JM		 1308 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1309 use_crypt = 0;
6fc6879b
JM		 1310
1311#ifdef IEEE8021X_EAPOL
1312 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1313 if ((ssid->eapol_flags &
1314 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1315 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1316 !wep_keys_set) {
1317 use_crypt = 0;
1318 } else {
1319 /* Assume that dynamic WEP-104 keys will be used and
1320 * set cipher suites in order for drivers to expect
1321 * encryption. */
1322 cipher_pairwise = cipher_group = CIPHER_WEP104;
1323 }
1324 }
1325#endif /* IEEE8021X_EAPOL */
1326
1327 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1328 /* Set the key before (and later after) association */
1329 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1330 }
1331
6fc6879b 1332 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
6fc6879b 1333 if (bss) {
6fa81a3b
JM		 1334 params.ssid = bss->ssid;
1335 params.ssid_len = bss->ssid_len;
22628eca
JM		 1336 if (!wpas_driver_bss_selection(wpa_s)) {
1337 params.bssid = bss->bssid;
1338 params.freq = bss->freq;
1339 }
6fc6879b
JM		 1340 } else {
1341 params.ssid = ssid->ssid;
1342 params.ssid_len = ssid->ssid_len;
1343 }
9e2af29f
NC		 1344
1345 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set &&
1346 wpa_s->conf->ap_scan == 2) {
1347 params.bssid = ssid->bssid;
1348 params.fixed_bssid = 1;
1349 }
1350
d7dcba70
JM		 1351 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1352 params.freq == 0)
6fc6879b
JM		 1353 params.freq = ssid->frequency; /* Initial channel for IBSS */
1354 params.wpa_ie = wpa_ie;
1355 params.wpa_ie_len = wpa_ie_len;
1356 params.pairwise_suite = cipher_pairwise;
1357 params.group_suite = cipher_group;
1358 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
64fa840a 1359 params.wpa_proto = wpa_s->wpa_proto;
6fc6879b
JM		 1360 params.auth_alg = algs;
1361 params.mode = ssid->mode;
1362 for (i = 0; i < NUM_WEP_KEYS; i++) {
1363 if (ssid->wep_key_len[i])
1364 params.wep_key[i] = ssid->wep_key[i];
1365 params.wep_key_len[i] = ssid->wep_key_len[i];
1366 }
1367 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1368
c2a04078 1369 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
6fc6879b
JM		 1370 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1371 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1372 params.passphrase = ssid->passphrase;
1373 if (ssid->psk_set)
1374 params.psk = ssid->psk;
1375 }
1376
36b15723
JM		 1377 params.drop_unencrypted = use_crypt;
1378
6fc6879b 1379#ifdef CONFIG_IEEE80211W
70f8cc8e
JM		 1380 params.mgmt_frame_protection = ssid->ieee80211w;
1381 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) {
6fa81a3b 1382 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
97d3497e
JM		 1383 struct wpa_ie_data ie;
1384 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1385 ie.capabilities &
1386 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 1387 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
1388 "MFP: require MFP");
97d3497e
JM		 1389 params.mgmt_frame_protection =
1390 MGMT_FRAME_PROTECTION_REQUIRED;
1391 }
1392 }
6fc6879b
JM		 1393#endif /* CONFIG_IEEE80211W */
1394
ffad8858 1395 params.p2p = ssid->p2p_group;
6e3f4b89 1396
eea2fd9e
JM		 1397 if (wpa_s->parent->set_sta_uapsd)
1398 params.uapsd = wpa_s->parent->sta_uapsd;
1399 else
1400 params.uapsd = -1;
1401
80e8a5ee
BG		 1402#ifdef CONFIG_HT_OVERRIDES
1403 os_memset(&htcaps, 0, sizeof(htcaps));
1404 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1405 params.htcaps = (u8 *) &htcaps;
1406 params.htcaps_mask = (u8 *) &htcaps_mask;
1407 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, &params);
1408#endif /* CONFIG_HT_OVERRIDES */
1409
17fbb751 1410 ret = wpa_drv_associate(wpa_s, &params);
6fc6879b
JM		 1411 if (ret < 0) {
1412 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1413 "failed");
871f4dd0
JM		 1414 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
1415 /*
1416 * The driver is known to mean what is saying, so we
1417 * can stop right here; the association will not
1418 * succeed.
1419 */
1420 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1421 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1422 return;
1423 }
6fc6879b
JM		 1424 /* try to continue anyway; new association will be tried again
1425 * after timeout */
1426 assoc_failed = 1;
1427 }
1428
1429 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1430 /* Set the key after the association just in case association
1431 * cleared the previously configured key. */
1432 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1433 /* No need to timeout authentication since there is no key
1434 * management. */
1435 wpa_supplicant_cancel_auth_timeout(wpa_s);
1436 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
53895c3b 1437#ifdef CONFIG_IBSS_RSN
d7dcba70 1438 } else if (ssid->mode == WPAS_MODE_IBSS &&
53895c3b
JM		 1439 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1440 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1441 /*
1442 * RSN IBSS authentication is per-STA and we can disable the
1443 * per-BSSID authentication.
1444 */
1445 wpa_supplicant_cancel_auth_timeout(wpa_s);
53895c3b 1446#endif /* CONFIG_IBSS_RSN */
6fc6879b
JM		 1447 } else {
1448 /* Timeout for IEEE 802.11 authentication and association */
1d3c75b3
DW		 1449 int timeout = 60;
1450
1451 if (assoc_failed) {
1452 /* give IBSS a bit more time */
d7dcba70 1453 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1d3c75b3
DW		 1454 } else if (wpa_s->conf->ap_scan == 1) {
1455 /* give IBSS a bit more time */
d7dcba70 1456 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1d3c75b3 1457 }
6fc6879b
JM		 1458 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1459 }
1460
1461 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1462 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1463 /* Set static WEP keys again */
1464 wpa_set_wep_keys(wpa_s, ssid);
1465 }
1466
1467 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1468 /*
1469 * Do not allow EAP session resumption between different
1470 * network configurations.
1471 */
1472 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1473 }
8bac466b 1474 old_ssid = wpa_s->current_ssid;
6fc6879b 1475 wpa_s->current_ssid = ssid;
8f770587 1476 wpa_s->current_bss = bss;
6fc6879b
JM		 1477 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1478 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 1479 if (old_ssid != wpa_s->current_ssid)
1480 wpas_notify_network_changed(wpa_s);
6fc6879b
JM		 1481}
1482
1483
09f58c09
JM		 1484static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1485 const u8 *addr)
1486{
1487 struct wpa_ssid *old_ssid;
1488
1489 wpa_clear_keys(wpa_s, addr);
1490 wpa_supplicant_mark_disassoc(wpa_s);
1491 old_ssid = wpa_s->current_ssid;
1492 wpa_s->current_ssid = NULL;
1493 wpa_s->current_bss = NULL;
1494 wpa_sm_set_config(wpa_s->wpa, NULL);
1495 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1496 if (old_ssid != wpa_s->current_ssid)
1497 wpas_notify_network_changed(wpa_s);
1498 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1499}
1500
1501
6fc6879b
JM		 1502/**
1503 * wpa_supplicant_disassociate - Disassociate the current connection
1504 * @wpa_s: Pointer to wpa_supplicant data
1505 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1506 *
1507 * This function is used to request %wpa_supplicant to disassociate with the
1508 * current AP.
1509 */
1510void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1511 int reason_code)
1512{
1513 u8 *addr = NULL;
8bac466b 1514
a8e16edc 1515 if (!is_zero_ether_addr(wpa_s->bssid)) {
17fbb751 1516 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
6fc6879b
JM		 1517 addr = wpa_s->bssid;
1518 }
09f58c09
JM		 1519
1520 wpa_supplicant_clear_connection(wpa_s, addr);
6fc6879b
JM		 1521}
1522
1523
1524/**
1525 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1526 * @wpa_s: Pointer to wpa_supplicant data
1527 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1528 *
073ab58f 1529 * This function is used to request %wpa_supplicant to deauthenticate from the
6fc6879b
JM		 1530 * current AP.
1531 */
1532void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1533 int reason_code)
1534{
1535 u8 *addr = NULL;
8bac466b 1536
a8e16edc 1537 if (!is_zero_ether_addr(wpa_s->bssid)) {
17fbb751 1538 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid, reason_code);
6fc6879b
JM		 1539 addr = wpa_s->bssid;
1540 }
09f58c09
JM		 1541
1542 wpa_supplicant_clear_connection(wpa_s, addr);
6fc6879b
JM		 1543}
1544
1545
86b89452
WS		 1546/**
1547 * wpa_supplicant_enable_network - Mark a configured network as enabled
1548 * @wpa_s: wpa_supplicant structure for a network interface
1549 * @ssid: wpa_ssid structure for a configured network or %NULL
1550 *
1551 * Enables the specified network or all networks if no network specified.
1552 */
1553void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1554 struct wpa_ssid *ssid)
1555{
1556 struct wpa_ssid *other_ssid;
1557 int was_disabled;
1558
1559 if (ssid == NULL) {
4dac0245
JM		 1560 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1561 other_ssid = other_ssid->next) {
1562 if (other_ssid->disabled == 2)
1563 continue; /* do not change persistent P2P group
1564 * data */
86b89452
WS		 1565 if (other_ssid == wpa_s->current_ssid &&
1566 other_ssid->disabled)
1567 wpa_s->reassociate = 1;
1568
1569 was_disabled = other_ssid->disabled;
1570
1571 other_ssid->disabled = 0;
1572
1573 if (was_disabled != other_ssid->disabled)
1574 wpas_notify_network_enabled_changed(
1575 wpa_s, other_ssid);
86b89452
WS		 1576 }
1577 if (wpa_s->reassociate)
1578 wpa_supplicant_req_scan(wpa_s, 0, 0);
4dac0245 1579 } else if (ssid->disabled && ssid->disabled != 2) {
adc8d4a7
KM		 1580 if (wpa_s->current_ssid == NULL) {
1581 /*
1582 * Try to reassociate since there is no current
1583 * configuration and a new network was made available.
1584 */
1585 wpa_s->reassociate = 1;
1586 wpa_supplicant_req_scan(wpa_s, 0, 0);
1587 }
86b89452
WS		 1588
1589 was_disabled = ssid->disabled;
1590
1591 ssid->disabled = 0;
1592
1593 if (was_disabled != ssid->disabled)
1594 wpas_notify_network_enabled_changed(wpa_s, ssid);
1595 }
1596}
1597
1598
1599/**
1600 * wpa_supplicant_disable_network - Mark a configured network as disabled
1601 * @wpa_s: wpa_supplicant structure for a network interface
1602 * @ssid: wpa_ssid structure for a configured network or %NULL
1603 *
1604 * Disables the specified network or all networks if no network specified.
1605 */
1606void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1607 struct wpa_ssid *ssid)
1608{
1609 struct wpa_ssid *other_ssid;
1610 int was_disabled;
1611
1612 if (ssid == NULL) {
4dac0245
JM		 1613 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1614 other_ssid = other_ssid->next) {
86b89452 1615 was_disabled = other_ssid->disabled;
4dac0245
JM		 1616 if (was_disabled == 2)
1617 continue; /* do not change persistent P2P group
1618 * data */
86b89452
WS		 1619
1620 other_ssid->disabled = 1;
1621
1622 if (was_disabled != other_ssid->disabled)
1623 wpas_notify_network_enabled_changed(
1624 wpa_s, other_ssid);
86b89452
WS		 1625 }
1626 if (wpa_s->current_ssid)
1627 wpa_supplicant_disassociate(
1628 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
4dac0245 1629 } else if (ssid->disabled != 2) {
86b89452
WS		 1630 if (ssid == wpa_s->current_ssid)
1631 wpa_supplicant_disassociate(
1632 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1633
1634 was_disabled = ssid->disabled;
1635
1636 ssid->disabled = 1;
1637
1638 if (was_disabled != ssid->disabled)
1639 wpas_notify_network_enabled_changed(wpa_s, ssid);
1640 }
1641}
1642
1643
1644/**
1645 * wpa_supplicant_select_network - Attempt association with a network
1646 * @wpa_s: wpa_supplicant structure for a network interface
1647 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1648 */
1649void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1650 struct wpa_ssid *ssid)
1651{
1652
1653 struct wpa_ssid *other_ssid;
d93dfbd5 1654 int disconnected = 0;
86b89452 1655
d93dfbd5 1656 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) {
86b89452
WS		 1657 wpa_supplicant_disassociate(
1658 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
d93dfbd5
JM		 1659 disconnected = 1;
1660 }
86b89452
WS		 1661
1662 /*
1663 * Mark all other networks disabled or mark all networks enabled if no
1664 * network specified.
1665 */
4dac0245
JM		 1666 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1667 other_ssid = other_ssid->next) {
86b89452 1668 int was_disabled = other_ssid->disabled;
4dac0245
JM		 1669 if (was_disabled == 2)
1670 continue; /* do not change persistent P2P group data */
86b89452
WS		 1671
1672 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1673
1674 if (was_disabled != other_ssid->disabled)
1675 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
86b89452 1676 }
2a6f78fb
JJ		 1677
1678 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) {
1679 /* We are already associated with the selected network */
1680 wpa_printf(MSG_DEBUG, "Already associated with the "
1681 "selected network - do nothing");
1682 return;
1683 }
1684
96efeeb6
JM		 1685 if (ssid)
1686 wpa_s->current_ssid = ssid;
7dcdcfd6 1687 wpa_s->connect_without_scan = NULL;
86b89452
WS		 1688 wpa_s->disconnected = 0;
1689 wpa_s->reassociate = 1;
d93dfbd5 1690 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0);
86b89452 1691
a1641d26
JM		 1692 if (ssid)
1693 wpas_notify_network_selected(wpa_s, ssid);
86b89452
WS		 1694}
1695
1696
1697/**
1698 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1699 * @wpa_s: wpa_supplicant structure for a network interface
1700 * @ap_scan: AP scan mode
1701 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1702 *
1703 */
1704int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1705{
1706
1707 int old_ap_scan;
1708
1709 if (ap_scan < 0 || ap_scan > 2)
1710 return -1;
1711
48f8e036
DS		 1712#ifdef ANDROID
1713 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan &&
1714 wpa_s->wpa_state >= WPA_ASSOCIATING &&
1715 wpa_s->wpa_state < WPA_COMPLETED) {
1716 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while "
1717 "associating", wpa_s->conf->ap_scan, ap_scan);
1718 return 0;
1719 }
1720#endif /* ANDROID */
1721
86b89452
WS		 1722 old_ap_scan = wpa_s->conf->ap_scan;
1723 wpa_s->conf->ap_scan = ap_scan;
1724
1725 if (old_ap_scan != wpa_s->conf->ap_scan)
1726 wpas_notify_ap_scan_changed(wpa_s);
1727
1728 return 0;
1729}
1730
1731
78633c37
SL		 1732/**
1733 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1734 * @wpa_s: wpa_supplicant structure for a network interface
1735 * @expire_age: Expiration age in seconds
1736 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1737 *
1738 */
1739int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
1740 unsigned int bss_expire_age)
1741{
1742 if (bss_expire_age < 10) {
1743 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
1744 bss_expire_age);
1745 return -1;
1746 }
1747 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
1748 bss_expire_age);
1749 wpa_s->conf->bss_expiration_age = bss_expire_age;
1750
1751 return 0;
1752}
1753
1754
1755/**
1756 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1757 * @wpa_s: wpa_supplicant structure for a network interface
1758 * @expire_count: number of scans after which an unseen BSS is reclaimed
1759 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1760 *
1761 */
1762int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
1763 unsigned int bss_expire_count)
1764{
1765 if (bss_expire_count < 1) {
1766 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
1767 bss_expire_count);
1768 return -1;
1769 }
1770 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
1771 bss_expire_count);
1772 wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
1773
1774 return 0;
1775}
1776
1777
86b89452
WS		 1778/**
1779 * wpa_supplicant_set_debug_params - Set global debug params
1780 * @global: wpa_global structure
1781 * @debug_level: debug level
1782 * @debug_timestamp: determines if show timestamp in debug data
1783 * @debug_show_keys: determines if show keys in debug data
1784 * Returns: 0 if succeed or -1 if debug_level has wrong value
1785 */
1786int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1787 int debug_timestamp, int debug_show_keys)
1788{
1789
1790 int old_level, old_timestamp, old_show_keys;
1791
1792 /* check for allowed debuglevels */
14dc0011
PS		 1793 if (debug_level != MSG_EXCESSIVE &&
1794 debug_level != MSG_MSGDUMP &&
86b89452
WS		 1795 debug_level != MSG_DEBUG &&
1796 debug_level != MSG_INFO &&
1797 debug_level != MSG_WARNING &&
1798 debug_level != MSG_ERROR)
1799 return -1;
1800
1801 old_level = wpa_debug_level;
1802 old_timestamp = wpa_debug_timestamp;
1803 old_show_keys = wpa_debug_show_keys;
1804
1805 wpa_debug_level = debug_level;
1806 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1807 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1808
db9133ac
WS		 1809 if (wpa_debug_level != old_level)
1810 wpas_notify_debug_level_changed(global);
1811 if (wpa_debug_timestamp != old_timestamp)
1812 wpas_notify_debug_timestamp_changed(global);
1813 if (wpa_debug_show_keys != old_show_keys)
1814 wpas_notify_debug_show_keys_changed(global);
86b89452
WS		 1815
1816 return 0;
1817}
1818
1819
6fc6879b
JM		 1820/**
1821 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1822 * @wpa_s: Pointer to wpa_supplicant data
1823 * Returns: A pointer to the current network structure or %NULL on failure
1824 */
1825struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1826{
1827 struct wpa_ssid *entry;
1828 u8 ssid[MAX_SSID_LEN];
1829 int res;
1830 size_t ssid_len;
1831 u8 bssid[ETH_ALEN];
1832 int wired;
1833
17fbb751
JM		 1834 res = wpa_drv_get_ssid(wpa_s, ssid);
1835 if (res < 0) {
1836 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
1837 "driver");
1838 return NULL;
6fc6879b 1839 }
17fbb751 1840 ssid_len = res;
6fc6879b 1841
17fbb751 1842 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
f049052b
BG		 1843 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
1844 "driver");
6fc6879b
JM		 1845 return NULL;
1846 }
1847
c2a04078
JM		 1848 wired = wpa_s->conf->ap_scan == 0 &&
1849 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
6fc6879b
JM		 1850
1851 entry = wpa_s->conf->ssid;
1852 while (entry) {
1853 if (!entry->disabled &&
1854 ((ssid_len == entry->ssid_len &&
1855 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1856 (!entry->bssid_set ||
1857 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1858 return entry;
24c23d1b
JM		 1859#ifdef CONFIG_WPS
1860 if (!entry->disabled &&
1861 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1862 (entry->ssid == NULL || entry->ssid_len == 0) &&
1863 (!entry->bssid_set ||
1864 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1865 return entry;
1866#endif /* CONFIG_WPS */
7d232e23
ZC		 1867
1868 if (!entry->disabled && entry->bssid_set &&
1869 entry->ssid_len == 0 &&
1870 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)
1871 return entry;
1872
6fc6879b
JM		 1873 entry = entry->next;
1874 }
1875
1876 return NULL;
1877}
1878
1879
7756114f
JM		 1880static int select_driver(struct wpa_supplicant *wpa_s, int i)
1881{
1882 struct wpa_global *global = wpa_s->global;
1883
1884 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) {
1885 global->drv_priv[i] = wpa_drivers[i]->global_init();
1886 if (global->drv_priv[i] == NULL) {
1887 wpa_printf(MSG_ERROR, "Failed to initialize driver "
1888 "'%s'", wpa_drivers[i]->name);
1889 return -1;
1890 }
1891 }
1892
1893 wpa_s->driver = wpa_drivers[i];
1894 wpa_s->global_drv_priv = global->drv_priv[i];
1895
1896 return 0;
1897}
1898
1899
6fc6879b
JM		 1900static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1901 const char *name)
1902{
1903 int i;
362f781e 1904 size_t len;
74b1c84a 1905 const char *pos, *driver = name;
6fc6879b
JM		 1906
1907 if (wpa_s == NULL)
1908 return -1;
1909
c5121837 1910 if (wpa_drivers[0] == NULL) {
f049052b
BG		 1911 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
1912 "wpa_supplicant");
6fc6879b
JM		 1913 return -1;
1914 }
1915
1916 if (name == NULL) {
1917 /* default to first driver in the list */
7756114f 1918 return select_driver(wpa_s, 0);
6fc6879b
JM		 1919 }
1920
74b1c84a
SO		 1921 do {
1922 pos = os_strchr(driver, ',');
1923 if (pos)
1924 len = pos - driver;
1925 else
1926 len = os_strlen(driver);
1927
1928 for (i = 0; wpa_drivers[i]; i++) {
1929 if (os_strlen(wpa_drivers[i]->name) == len &&
1930 os_strncmp(driver, wpa_drivers[i]->name, len) ==
0f4668ce
DW		 1931 0) {
1932 /* First driver that succeeds wins */
1933 if (select_driver(wpa_s, i) == 0)
1934 return 0;
1935 }
6fc6879b 1936 }
74b1c84a
SO		 1937
1938 driver = pos + 1;
1939 } while (pos);
6fc6879b 1940
f049052b 1941 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
6fc6879b
JM		 1942 return -1;
1943}
1944
1945
a8e0505b
JM		 1946/**
1947 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1948 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1949 * with struct wpa_driver_ops::init()
1950 * @src_addr: Source address of the EAPOL frame
1951 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1952 * @len: Length of the EAPOL data
1953 *
1954 * This function is called for each received EAPOL frame. Most driver
1955 * interfaces rely on more generic OS mechanism for receiving frames through
1956 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1957 * take care of received EAPOL frames and deliver them to the core supplicant
1958 * code by calling this function.
1959 */
6fc6879b
JM		 1960void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1961 const u8 *buf, size_t len)
1962{
1963 struct wpa_supplicant *wpa_s = ctx;
1964
f049052b 1965 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
6fc6879b
JM		 1966 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1967
1ff73338
JM		 1968 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1969 /*
1970 * There is possible race condition between receiving the
1971 * association event and the EAPOL frame since they are coming
1972 * through different paths from the driver. In order to avoid
1973 * issues in trying to process the EAPOL frame before receiving
1974 * association information, lets queue it for processing until
1975 * the association event is received.
1976 */
f049052b
BG		 1977 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
1978 "of received EAPOL frame");
1ff73338
JM		 1979 wpabuf_free(wpa_s->pending_eapol_rx);
1980 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1981 if (wpa_s->pending_eapol_rx) {
1982 os_get_time(&wpa_s->pending_eapol_rx_time);
1983 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1984 ETH_ALEN);
1985 }
1986 return;
1987 }
1988
db149ac9
JM		 1989#ifdef CONFIG_AP
1990 if (wpa_s->ap_iface) {
1991 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1992 return;
1993 }
1994#endif /* CONFIG_AP */
1995
6fc6879b 1996 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
f049052b
BG		 1997 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
1998 "no key management is configured");
6fc6879b
JM		 1999 return;
2000 }
2001
2002 if (wpa_s->eapol_received == 0 &&
c2a04078 2003 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
56586197 2004 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
9c972abb
JM		 2005 wpa_s->wpa_state != WPA_COMPLETED) &&
2006 (wpa_s->current_ssid == NULL ||
2007 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
6fc6879b
JM		 2008 /* Timeout for completing IEEE 802.1X and WPA authentication */
2009 wpa_supplicant_req_auth_timeout(
2010 wpa_s,
56586197 2011 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
a6f06dab
AT		 2012 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
2013 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
6fc6879b
JM		 2014 70 : 10, 0);
2015 }
2016 wpa_s->eapol_received++;
2017
2018 if (wpa_s->countermeasures) {
f049052b
BG		 2019 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
2020 "EAPOL packet");
6fc6879b
JM		 2021 return;
2022 }
2023
8be18440
JM		 2024#ifdef CONFIG_IBSS_RSN
2025 if (wpa_s->current_ssid &&
d7dcba70 2026 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
8be18440
JM		 2027 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
2028 return;
2029 }
2030#endif /* CONFIG_IBSS_RSN */
2031
6fc6879b
JM		 2032 /* Source address of the incoming EAPOL frame could be compared to the
2033 * current BSSID. However, it is possible that a centralized
2034 * Authenticator could be using another MAC address than the BSSID of
2035 * an AP, so just allow any address to be used for now. The replies are
2036 * still sent to the current BSSID (if available), though. */
2037
2038 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
56586197 2039 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
6fc6879b
JM		 2040 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
2041 return;
2042 wpa_drv_poll(wpa_s);
c2a04078 2043 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
6fc6879b 2044 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
56586197 2045 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
6fc6879b
JM		 2046 /*
2047 * Set portValid = TRUE here since we are going to skip 4-way
2048 * handshake processing which would normally set portValid. We
2049 * need this to allow the EAPOL state machines to be completed
2050 * without going through EAPOL-Key handshake.
2051 */
2052 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2053 }
2054}
2055
2056
bfba8deb 2057int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s)
6fc6879b 2058{
6fc6879b
JM		 2059 if (wpa_s->driver->send_eapol) {
2060 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2061 if (addr)
2062 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
fdadd5fe
JM		 2063 } else if (!(wpa_s->drv_flags &
2064 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
bfba8deb 2065 l2_packet_deinit(wpa_s->l2);
6fc6879b
JM		 2066 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
2067 wpa_drv_get_mac_addr(wpa_s),
2068 ETH_P_EAPOL,
2069 wpa_supplicant_rx_eapol, wpa_s, 0);
2070 if (wpa_s->l2 == NULL)
2071 return -1;
fdadd5fe
JM		 2072 } else {
2073 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2074 if (addr)
2075 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
6fc6879b
JM		 2076 }
2077
2078 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
f049052b 2079 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
6fc6879b
JM		 2080 return -1;
2081 }
2082
f049052b
BG		 2083 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
2084 MAC2STR(wpa_s->own_addr));
f98eb880 2085 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
6fc6879b 2086
bfba8deb
JM		 2087 return 0;
2088}
2089
2090
2091/**
2092 * wpa_supplicant_driver_init - Initialize driver interface parameters
2093 * @wpa_s: Pointer to wpa_supplicant data
2094 * Returns: 0 on success, -1 on failure
2095 *
2096 * This function is called to initialize driver interface parameters.
2097 * wpa_drv_init() must have been called before this function to initialize the
2098 * driver interface.
2099 */
2100int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
2101{
2102 static int interface_count = 0;
2103
2104 if (wpa_supplicant_update_mac_addr(wpa_s) < 0)
2105 return -1;
2106
6fc6879b 2107 if (wpa_s->bridge_ifname[0]) {
f049052b
BG		 2108 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
2109 "interface '%s'", wpa_s->bridge_ifname);
6fc6879b
JM		 2110 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
2111 wpa_s->own_addr,
2112 ETH_P_EAPOL,
2113 wpa_supplicant_rx_eapol, wpa_s,
2114 0);
2115 if (wpa_s->l2_br == NULL) {
f049052b
BG		 2116 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
2117 "connection for the bridge interface '%s'",
2118 wpa_s->bridge_ifname);
6fc6879b
JM		 2119 return -1;
2120 }
2121 }
2122
6fc6879b
JM		 2123 wpa_clear_keys(wpa_s, NULL);
2124
2125 /* Make sure that TKIP countermeasures are not left enabled (could
2126 * happen if wpa_supplicant is killed during countermeasures. */
2127 wpa_drv_set_countermeasures(wpa_s, 0);
2128
f049052b 2129 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
6fc6879b
JM		 2130 wpa_drv_flush_pmkid(wpa_s);
2131
ba2a573c 2132 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
b3aa456b
ES		 2133 wpa_s->prev_scan_wildcard = 0;
2134
74e259ec 2135 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
6a90053c
LC		 2136 if (wpa_supplicant_delayed_sched_scan(wpa_s, interface_count,
2137 100000))
a4cba8f1
LC		 2138 wpa_supplicant_req_scan(wpa_s, interface_count,
2139 100000);
74e259ec
JM		 2140 interface_count++;
2141 } else
2142 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
6fc6879b
JM		 2143
2144 return 0;
2145}
2146
2147
2148static int wpa_supplicant_daemon(const char *pid_file)
2149{
2150 wpa_printf(MSG_DEBUG, "Daemonize..");
2151 return os_daemonize(pid_file);
2152}
2153
2154
2155static struct wpa_supplicant * wpa_supplicant_alloc(void)
2156{
2157 struct wpa_supplicant *wpa_s;
2158
2159 wpa_s = os_zalloc(sizeof(*wpa_s));
2160 if (wpa_s == NULL)
2161 return NULL;
2162 wpa_s->scan_req = 1;
67b9bd08 2163 wpa_s->scan_interval = 5;
c302f207 2164 wpa_s->new_connection = 1;
b22128ef 2165 wpa_s->parent = wpa_s;
cbdf3507 2166 wpa_s->sched_scanning = 0;
6fc6879b
JM		 2167
2168 return wpa_s;
2169}
2170
2171
80e8a5ee
BG		 2172#ifdef CONFIG_HT_OVERRIDES
2173
2174static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s,
2175 struct ieee80211_ht_capabilities *htcaps,
2176 struct ieee80211_ht_capabilities *htcaps_mask,
2177 const char *ht_mcs)
2178{
2179 /* parse ht_mcs into hex array */
2180 int i;
2181 const char *tmp = ht_mcs;
2182 char *end = NULL;
2183
2184 /* If ht_mcs is null, do not set anything */
2185 if (!ht_mcs)
2186 return 0;
2187
2188 /* This is what we are setting in the kernel */
2189 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN);
2190
2191 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs);
2192
2193 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
2194 errno = 0;
2195 long v = strtol(tmp, &end, 16);
2196 if (errno == 0) {
2197 wpa_msg(wpa_s, MSG_DEBUG,
2198 "htcap value[%i]: %ld end: %p tmp: %p",
2199 i, v, end, tmp);
2200 if (end == tmp)
2201 break;
2202
2203 htcaps->supported_mcs_set[i] = v;
2204 tmp = end;
2205 } else {
2206 wpa_msg(wpa_s, MSG_ERROR,
2207 "Failed to parse ht-mcs: %s, error: %s\n",
2208 ht_mcs, strerror(errno));
2209 return -1;
2210 }
2211 }
2212
2213 /*
2214 * If we were able to parse any values, then set mask for the MCS set.
2215 */
2216 if (i) {
2217 os_memset(&htcaps_mask->supported_mcs_set, 0xff,
2218 IEEE80211_HT_MCS_MASK_LEN - 1);
2219 /* skip the 3 reserved bits */
2220 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] =
2221 0x1f;
2222 }
2223
2224 return 0;
2225}
2226
2227
2228static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s,
2229 struct ieee80211_ht_capabilities *htcaps,
2230 struct ieee80211_ht_capabilities *htcaps_mask,
2231 int disabled)
2232{
2233 u16 msk;
2234
2235 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled);
2236
2237 if (disabled == -1)
2238 return 0;
2239
2240 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE);
2241 htcaps_mask->ht_capabilities_info |= msk;
2242 if (disabled)
2243 htcaps->ht_capabilities_info &= msk;
2244 else
2245 htcaps->ht_capabilities_info |= msk;
2246
2247 return 0;
2248}
2249
2250
2251static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s,
2252 struct ieee80211_ht_capabilities *htcaps,
2253 struct ieee80211_ht_capabilities *htcaps_mask,
2254 int factor)
2255{
2256 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor);
2257
2258 if (factor == -1)
2259 return 0;
2260
2261 if (factor < 0 || factor > 3) {
2262 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. "
2263 "Must be 0-3 or -1", factor);
2264 return -EINVAL;
2265 }
2266
2267 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */
2268 htcaps->a_mpdu_params &= ~0x3;
2269 htcaps->a_mpdu_params |= factor & 0x3;
2270
2271 return 0;
2272}
2273
2274
2275static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s,
2276 struct ieee80211_ht_capabilities *htcaps,
2277 struct ieee80211_ht_capabilities *htcaps_mask,
2278 int density)
2279{
2280 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density);
2281
2282 if (density == -1)
2283 return 0;
2284
2285 if (density < 0 || density > 7) {
2286 wpa_msg(wpa_s, MSG_ERROR,
2287 "ampdu_density: %d out of range. Must be 0-7 or -1.",
2288 density);
2289 return -EINVAL;
2290 }
2291
2292 htcaps_mask->a_mpdu_params |= 0x1C;
2293 htcaps->a_mpdu_params &= ~(0x1C);
2294 htcaps->a_mpdu_params |= (density << 2) & 0x1C;
2295
2296 return 0;
2297}
2298
2299
2300static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s,
2301 struct ieee80211_ht_capabilities *htcaps,
2302 struct ieee80211_ht_capabilities *htcaps_mask,
2303 int disabled)
2304{
2305 /* Masking these out disables HT40 */
2306 u16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET |
2307 HT_CAP_INFO_SHORT_GI40MHZ);
2308
2309 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled);
2310
2311 if (disabled)
2312 htcaps->ht_capabilities_info &= ~msk;
2313 else
2314 htcaps->ht_capabilities_info |= msk;
2315
2316 htcaps_mask->ht_capabilities_info |= msk;
2317
2318 return 0;
2319}
2320
2321
2322void wpa_supplicant_apply_ht_overrides(
2323 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
2324 struct wpa_driver_associate_params *params)
2325{
2326 struct ieee80211_ht_capabilities *htcaps;
2327 struct ieee80211_ht_capabilities *htcaps_mask;
2328
2329 if (!ssid)
2330 return;
2331
2332 params->disable_ht = ssid->disable_ht;
2333 if (!params->htcaps || !params->htcaps_mask)
2334 return;
2335
2336 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps;
2337 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask;
2338 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs);
2339 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask,
2340 ssid->disable_max_amsdu);
2341 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor);
2342 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density);
2343 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40);
2344}
2345
2346#endif /* CONFIG_HT_OVERRIDES */
2347
2348
6fc6879b
JM		 2349static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2350 struct wpa_interface *iface)
2351{
362f781e
JM		 2352 const char *ifname, *driver;
2353 struct wpa_driver_capa capa;
2354
6fc6879b
JM		 2355 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2356 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2357 iface->confname ? iface->confname : "N/A",
2358 iface->driver ? iface->driver : "default",
2359 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2360 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2361
6fc6879b
JM		 2362 if (iface->confname) {
2363#ifdef CONFIG_BACKEND_FILE
2364 wpa_s->confname = os_rel2abs_path(iface->confname);
2365 if (wpa_s->confname == NULL) {
2366 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2367 "for configuration file '%s'.",
2368 iface->confname);
2369 return -1;
2370 }
2371 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2372 iface->confname, wpa_s->confname);
2373#else /* CONFIG_BACKEND_FILE */
2374 wpa_s->confname = os_strdup(iface->confname);
2375#endif /* CONFIG_BACKEND_FILE */
2376 wpa_s->conf = wpa_config_read(wpa_s->confname);
2377 if (wpa_s->conf == NULL) {
2378 wpa_printf(MSG_ERROR, "Failed to read or parse "
2379 "configuration '%s'.", wpa_s->confname);
2380 return -1;
2381 }
2382
2383 /*
2384 * Override ctrl_interface and driver_param if set on command
2385 * line.
2386 */
2387 if (iface->ctrl_interface) {
2388 os_free(wpa_s->conf->ctrl_interface);
2389 wpa_s->conf->ctrl_interface =
2390 os_strdup(iface->ctrl_interface);
2391 }
2392
2393 if (iface->driver_param) {
2394 os_free(wpa_s->conf->driver_param);
2395 wpa_s->conf->driver_param =
2396 os_strdup(iface->driver_param);
2397 }
2398 } else
2399 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2400 iface->driver_param);
2401
2402 if (wpa_s->conf == NULL) {
2403 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2404 return -1;
2405 }
2406
2407 if (iface->ifname == NULL) {
2408 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2409 return -1;
2410 }
2411 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2412 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2413 iface->ifname);
2414 return -1;
2415 }
2416 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2417
2418 if (iface->bridge_ifname) {
2419 if (os_strlen(iface->bridge_ifname) >=
2420 sizeof(wpa_s->bridge_ifname)) {
2421 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2422 "name '%s'.", iface->bridge_ifname);
2423 return -1;
2424 }
2425 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2426 sizeof(wpa_s->bridge_ifname));
2427 }
2428
6fc6879b
JM		 2429 /* RSNA Supplicant Key Management - INITIALIZE */
2430 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2431 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2432
2433 /* Initialize driver interface and register driver event handler before
2434 * L2 receive handler so that association events are processed before
2435 * EAPOL-Key packets if both become available for the same select()
2436 * call. */
362f781e
JM		 2437 driver = iface->driver;
2438next_driver:
2439 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2440 return -1;
2441
6fc6879b
JM		 2442 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2443 if (wpa_s->drv_priv == NULL) {
362f781e 2444 const char *pos;
a5b9337f 2445 pos = driver ? os_strchr(driver, ',') : NULL;
362f781e 2446 if (pos) {
f049052b
BG		 2447 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
2448 "driver interface - try next driver wrapper");
362f781e
JM		 2449 driver = pos + 1;
2450 goto next_driver;
2451 }
f049052b
BG		 2452 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
2453 "interface");
6fc6879b
JM		 2454 return -1;
2455 }
2456 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
f049052b
BG		 2457 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
2458 "driver_param '%s'", wpa_s->conf->driver_param);
6fc6879b
JM		 2459 return -1;
2460 }
2461
2462 ifname = wpa_drv_get_ifname(wpa_s);
2463 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
f049052b
BG		 2464 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
2465 "interface name with '%s'", ifname);
6fc6879b
JM		 2466 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2467 }
2468
2469 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2470 return -1;
2471
2472 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2473 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2474 NULL);
2475 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2476
2477 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2478 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2479 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
f049052b
BG		 2480 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2481 "dot11RSNAConfigPMKLifetime");
6fc6879b
JM		 2482 return -1;
2483 }
2484
2485 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2486 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2487 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
f049052b 2488 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
6fc6879b
JM		 2489 "dot11RSNAConfigPMKReauthThreshold");
2490 return -1;
2491 }
2492
2493 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2494 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2495 wpa_s->conf->dot11RSNAConfigSATimeout)) {
f049052b
BG		 2496 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2497 "dot11RSNAConfigSATimeout");
6fc6879b
JM		 2498 return -1;
2499 }
2500
6bf731e8
CL		 2501 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
2502 &wpa_s->hw.num_modes,
2503 &wpa_s->hw.flags);
2504
814782b9 2505 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
c58ab8f2 2506 wpa_s->drv_capa_known = 1;
814782b9 2507 wpa_s->drv_flags = capa.flags;
4f73d88a 2508 wpa_s->probe_resp_offloads = capa.probe_resp_offloads;
814782b9 2509 wpa_s->max_scan_ssids = capa.max_scan_ssids;
cbdf3507
LC		 2510 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids;
2511 wpa_s->sched_scan_supported = capa.sched_scan_supported;
b59e6f26 2512 wpa_s->max_match_sets = capa.max_match_sets;
814782b9 2513 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
c4ea4c5c 2514 wpa_s->max_stations = capa.max_stations;
814782b9
JM		 2515 }
2516 if (wpa_s->max_remain_on_chan == 0)
2517 wpa_s->max_remain_on_chan = 1000;
2518
6fc6879b
JM		 2519 if (wpa_supplicant_driver_init(wpa_s) < 0)
2520 return -1;
2521
281ff0aa
GP		 2522#ifdef CONFIG_TDLS
2523 if (wpa_tdls_init(wpa_s->wpa))
2524 return -1;
2525#endif /* CONFIG_TDLS */
2526
315ce40a
JM		 2527 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2528 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
f049052b 2529 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
6d158490
LR		 2530 return -1;
2531 }
2532
116654ce
JM		 2533 if (wpas_wps_init(wpa_s))
2534 return -1;
2535
6fc6879b
JM		 2536 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2537 return -1;
2538 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2539
2540 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2541 if (wpa_s->ctrl_iface == NULL) {
2542 wpa_printf(MSG_ERROR,
2543 "Failed to initialize control interface '%s'.\n"
2544 "You may have another wpa_supplicant process "
2545 "already running or the file was\n"
2546 "left by an unclean termination of wpa_supplicant "
2547 "in which case you will need\n"
2548 "to manually remove this file before starting "
2549 "wpa_supplicant again.\n",
2550 wpa_s->conf->ctrl_interface);
2551 return -1;
2552 }
2553
04ea7b79
JM		 2554 wpa_s->gas = gas_query_init(wpa_s);
2555 if (wpa_s->gas == NULL) {
2556 wpa_printf(MSG_ERROR, "Failed to initialize GAS query");
2557 return -1;
2558 }
2559
b22128ef
JM		 2560#ifdef CONFIG_P2P
2561 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
f049052b 2562 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
b22128ef
JM		 2563 return -1;
2564 }
2565#endif /* CONFIG_P2P */
2566
83922c2d
JM		 2567 if (wpa_bss_init(wpa_s) < 0)
2568 return -1;
83922c2d 2569
6fc6879b
JM		 2570 return 0;
2571}
2572
2573
2ee055b3 2574static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
df509539 2575 int notify, int terminate)
6fc6879b
JM		 2576{
2577 if (wpa_s->drv_priv) {
2578 wpa_supplicant_deauthenticate(wpa_s,
2579 WLAN_REASON_DEAUTH_LEAVING);
2580
6fc6879b
JM		 2581 wpa_drv_set_countermeasures(wpa_s, 0);
2582 wpa_clear_keys(wpa_s, NULL);
2583 }
2584
8e56d189
JM		 2585 wpa_supplicant_cleanup(wpa_s);
2586
6fc6879b
JM		 2587 if (wpa_s->drv_priv)
2588 wpa_drv_deinit(wpa_s);
2523ff6e
DS		 2589
2590 if (notify)
2591 wpas_notify_iface_removed(wpa_s);
f0811516
DS		 2592
2593 if (terminate)
2594 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING);
2595
2596 if (wpa_s->ctrl_iface) {
2597 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
2598 wpa_s->ctrl_iface = NULL;
2599 }
2600
2601 if (wpa_s->conf != NULL) {
2602 wpa_config_free(wpa_s->conf);
2603 wpa_s->conf = NULL;
2604 }
6fc6879b
JM		 2605}
2606
2607
2608/**
2609 * wpa_supplicant_add_iface - Add a new network interface
2610 * @global: Pointer to global data from wpa_supplicant_init()
2611 * @iface: Interface configuration options
2612 * Returns: Pointer to the created interface or %NULL on failure
2613 *
2614 * This function is used to add new network interfaces for %wpa_supplicant.
2615 * This can be called before wpa_supplicant_run() to add interfaces before the
2616 * main event loop has been started. In addition, new interfaces can be added
2617 * dynamically while %wpa_supplicant is already running. This could happen,
2618 * e.g., when a hotplug network adapter is inserted.
2619 */
2620struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2621 struct wpa_interface *iface)
2622{
2623 struct wpa_supplicant *wpa_s;
d27df100 2624 struct wpa_interface t_iface;
8e56d189 2625 struct wpa_ssid *ssid;
6fc6879b
JM		 2626
2627 if (global == NULL || iface == NULL)
2628 return NULL;
2629
2630 wpa_s = wpa_supplicant_alloc();
2631 if (wpa_s == NULL)
2632 return NULL;
2633
d8222ae3
JM		 2634 wpa_s->global = global;
2635
d27df100
JM		 2636 t_iface = *iface;
2637 if (global->params.override_driver) {
2638 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2639 "('%s' -> '%s')",
2640 iface->driver, global->params.override_driver);
2641 t_iface.driver = global->params.override_driver;
2642 }
2643 if (global->params.override_ctrl_interface) {
2644 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2645 "ctrl_interface ('%s' -> '%s')",
2646 iface->ctrl_interface,
2647 global->params.override_ctrl_interface);
2648 t_iface.ctrl_interface =
2649 global->params.override_ctrl_interface;
2650 }
2651 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
6fc6879b
JM		 2652 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2653 iface->ifname);
df509539 2654 wpa_supplicant_deinit_iface(wpa_s, 0, 0);
6fc6879b
JM		 2655 os_free(wpa_s);
2656 return NULL;
2657 }
2658
dc461de4
WS		 2659 /* Notify the control interfaces about new iface */
2660 if (wpas_notify_iface_added(wpa_s)) {
df509539 2661 wpa_supplicant_deinit_iface(wpa_s, 1, 0);
6fc6879b
JM		 2662 os_free(wpa_s);
2663 return NULL;
2664 }
1bd3f426 2665
8e56d189
JM		 2666 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2667 wpas_notify_network_added(wpa_s, ssid);
2668
6fc6879b
JM		 2669 wpa_s->next = global->ifaces;
2670 global->ifaces = wpa_s;
2671
f049052b 2672 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
6fc6879b
JM		 2673
2674 return wpa_s;
2675}
2676
2677
2678/**
2679 * wpa_supplicant_remove_iface - Remove a network interface
2680 * @global: Pointer to global data from wpa_supplicant_init()
2681 * @wpa_s: Pointer to the network interface to be removed
2682 * Returns: 0 if interface was removed, -1 if interface was not found
2683 *
2684 * This function can be used to dynamically remove network interfaces from
2685 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2686 * addition, this function is used to remove all remaining interfaces when
2687 * %wpa_supplicant is terminated.
2688 */
2689int wpa_supplicant_remove_iface(struct wpa_global *global,
df509539
DS		 2690 struct wpa_supplicant *wpa_s,
2691 int terminate)
6fc6879b
JM		 2692{
2693 struct wpa_supplicant *prev;
2694
2695 /* Remove interface from the global list of interfaces */
2696 prev = global->ifaces;
2697 if (prev == wpa_s) {
2698 global->ifaces = wpa_s->next;
2699 } else {
2700 while (prev && prev->next != wpa_s)
2701 prev = prev->next;
2702 if (prev == NULL)
2703 return -1;
2704 prev->next = wpa_s->next;
2705 }
2706
f049052b 2707 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
6fc6879b 2708
b22128ef
JM		 2709 if (global->p2p_group_formation == wpa_s)
2710 global->p2p_group_formation = NULL;
df509539 2711 wpa_supplicant_deinit_iface(wpa_s, 1, terminate);
6fc6879b
JM		 2712 os_free(wpa_s);
2713
2714 return 0;
2715}
2716
2717
cf83fb0b
PS		 2718/**
2719 * wpa_supplicant_get_eap_mode - Get the current EAP mode
2720 * @wpa_s: Pointer to the network interface
2721 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
2722 */
2723const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
2724{
2725 const char *eapol_method;
2726
2727 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
2728 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2729 return "NO-EAP";
2730 }
2731
2732 eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
2733 if (eapol_method == NULL)
2734 return "UNKNOWN-EAP";
2735
2736 return eapol_method;
2737}
2738
2739
6fc6879b
JM		 2740/**
2741 * wpa_supplicant_get_iface - Get a new network interface
2742 * @global: Pointer to global data from wpa_supplicant_init()
2743 * @ifname: Interface name
2744 * Returns: Pointer to the interface or %NULL if not found
2745 */
2746struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2747 const char *ifname)
2748{
2749 struct wpa_supplicant *wpa_s;
2750
2751 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2752 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2753 return wpa_s;
2754 }
2755 return NULL;
2756}
2757
2758
50b16da1 2759#ifndef CONFIG_NO_WPA_MSG
4f1495ae
BG		 2760static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
2761{
2762 struct wpa_supplicant *wpa_s = ctx;
2763 if (wpa_s == NULL)
2764 return NULL;
2765 return wpa_s->ifname;
2766}
50b16da1 2767#endif /* CONFIG_NO_WPA_MSG */
4f1495ae
BG		 2768
2769
6fc6879b
JM		 2770/**
2771 * wpa_supplicant_init - Initialize %wpa_supplicant
2772 * @params: Parameters for %wpa_supplicant
2773 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2774 *
2775 * This function is used to initialize %wpa_supplicant. After successful
2776 * initialization, the returned data pointer can be used to add and remove
2777 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2778 */
2779struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2780{
2781 struct wpa_global *global;
ac305589 2782 int ret, i;
6fc6879b
JM		 2783
2784 if (params == NULL)
2785 return NULL;
2786
39e7d718
JM		 2787#ifdef CONFIG_DRIVER_NDIS
2788 {
2789 void driver_ndis_init_ops(void);
2790 driver_ndis_init_ops();
2791 }
2792#endif /* CONFIG_DRIVER_NDIS */
2793
50b16da1 2794#ifndef CONFIG_NO_WPA_MSG
4f1495ae 2795 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
50b16da1 2796#endif /* CONFIG_NO_WPA_MSG */
4f1495ae 2797
6fc6879b 2798 wpa_debug_open_file(params->wpa_debug_file_path);
daa70d49
SL		 2799 if (params->wpa_debug_syslog)
2800 wpa_debug_open_syslog();
6fc6879b 2801
12760815 2802 ret = eap_register_methods();
6fc6879b
JM		 2803 if (ret) {
2804 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2805 if (ret == -2)
2806 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2807 "the same EAP type.");
2808 return NULL;
2809 }
2810
2811 global = os_zalloc(sizeof(*global));
2812 if (global == NULL)
2813 return NULL;
b22128ef
JM		 2814 dl_list_init(&global->p2p_srv_bonjour);
2815 dl_list_init(&global->p2p_srv_upnp);
6fc6879b
JM		 2816 global->params.daemonize = params->daemonize;
2817 global->params.wait_for_monitor = params->wait_for_monitor;
2818 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2819 if (params->pid_file)
2820 global->params.pid_file = os_strdup(params->pid_file);
2821 if (params->ctrl_interface)
2822 global->params.ctrl_interface =
2823 os_strdup(params->ctrl_interface);
d27df100
JM		 2824 if (params->override_driver)
2825 global->params.override_driver =
2826 os_strdup(params->override_driver);
2827 if (params->override_ctrl_interface)
2828 global->params.override_ctrl_interface =
2829 os_strdup(params->override_ctrl_interface);
6fc6879b
JM		 2830 wpa_debug_level = global->params.wpa_debug_level =
2831 params->wpa_debug_level;
2832 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2833 params->wpa_debug_show_keys;
2834 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2835 params->wpa_debug_timestamp;
2836
f19858f5
JM		 2837 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
2838
0456ea16 2839 if (eloop_init()) {
6fc6879b
JM		 2840 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2841 wpa_supplicant_deinit(global);
2842 return NULL;
2843 }
2844
38e24575 2845 random_init(params->entropy_file);
d47fa330 2846
6fc6879b
JM		 2847 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2848 if (global->ctrl_iface == NULL) {
2849 wpa_supplicant_deinit(global);
2850 return NULL;
2851 }
2852
dc461de4
WS		 2853 if (wpas_notify_supplicant_initialized(global)) {
2854 wpa_supplicant_deinit(global);
2855 return NULL;
6fc6879b
JM		 2856 }
2857
c5121837 2858 for (i = 0; wpa_drivers[i]; i++)
ac305589
JM		 2859 global->drv_count++;
2860 if (global->drv_count == 0) {
2861 wpa_printf(MSG_ERROR, "No drivers enabled");
2862 wpa_supplicant_deinit(global);
2863 return NULL;
2864 }
2865 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2866 if (global->drv_priv == NULL) {
2867 wpa_supplicant_deinit(global);
2868 return NULL;
2869 }
ac305589 2870
6fc6879b
JM		 2871 return global;
2872}
2873
2874
2875/**
2876 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2877 * @global: Pointer to global data from wpa_supplicant_init()
2878 * Returns: 0 after successful event loop run, -1 on failure
2879 *
2880 * This function starts the main event loop and continues running as long as
2881 * there are any remaining events. In most cases, this function is running as
2882 * long as the %wpa_supplicant process in still in use.
2883 */
2884int wpa_supplicant_run(struct wpa_global *global)
2885{
2886 struct wpa_supplicant *wpa_s;
2887
2888 if (global->params.daemonize &&
2889 wpa_supplicant_daemon(global->params.pid_file))
2890 return -1;
2891
2892 if (global->params.wait_for_monitor) {
2893 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2894 if (wpa_s->ctrl_iface)
2895 wpa_supplicant_ctrl_iface_wait(
2896 wpa_s->ctrl_iface);
2897 }
2898
0456ea16
JM		 2899 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
2900 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
6fc6879b
JM		 2901
2902 eloop_run();
2903
2904 return 0;
2905}
2906
2907
2908/**
2909 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2910 * @global: Pointer to global data from wpa_supplicant_init()
2911 *
2912 * This function is called to deinitialize %wpa_supplicant and to free all
2913 * allocated resources. Remaining network interfaces will also be removed.
2914 */
2915void wpa_supplicant_deinit(struct wpa_global *global)
2916{
ac305589
JM		 2917 int i;
2918
6fc6879b
JM		 2919 if (global == NULL)
2920 return;
2921
b22128ef
JM		 2922#ifdef CONFIG_P2P
2923 wpas_p2p_deinit_global(global);
2924#endif /* CONFIG_P2P */
2925
6fc6879b 2926 while (global->ifaces)
df509539 2927 wpa_supplicant_remove_iface(global, global->ifaces, 1);
6fc6879b
JM		 2928
2929 if (global->ctrl_iface)
2930 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
dc461de4
WS		 2931
2932 wpas_notify_supplicant_deinitialized(global);
6fc6879b
JM		 2933
2934 eap_peer_unregister_methods();
3ec97afe
JM		 2935#ifdef CONFIG_AP
2936 eap_server_unregister_methods();
2937#endif /* CONFIG_AP */
6fc6879b 2938
c5121837 2939 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
ac305589
JM		 2940 if (!global->drv_priv[i])
2941 continue;
c5121837 2942 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
ac305589
JM		 2943 }
2944 os_free(global->drv_priv);
2945
d47fa330
JM		 2946 random_deinit();
2947
6fc6879b
JM		 2948 eloop_destroy();
2949
2950 if (global->params.pid_file) {
2951 os_daemonize_terminate(global->params.pid_file);
2952 os_free(global->params.pid_file);
2953 }
2954 os_free(global->params.ctrl_interface);
d27df100
JM		 2955 os_free(global->params.override_driver);
2956 os_free(global->params.override_ctrl_interface);
6fc6879b
JM		 2957
2958 os_free(global);
daa70d49 2959 wpa_debug_close_syslog();
6fc6879b
JM		 2960 wpa_debug_close_file();
2961}
611aea7d
JM		 2962
2963
2964void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
2965{
849b5dc7
JM		 2966 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
2967 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2968 char country[3];
2969 country[0] = wpa_s->conf->country[0];
2970 country[1] = wpa_s->conf->country[1];
2971 country[2] = '\0';
2972 if (wpa_drv_set_country(wpa_s, country) < 0) {
2973 wpa_printf(MSG_ERROR, "Failed to set country code "
2974 "'%s'", country);
2975 }
2976 }
2977
611aea7d
JM		 2978#ifdef CONFIG_WPS
2979 wpas_wps_update_config(wpa_s);
2980#endif /* CONFIG_WPS */
2981
b22128ef
JM		 2982#ifdef CONFIG_P2P
2983 wpas_p2p_update_config(wpa_s);
2984#endif /* CONFIG_P2P */
2985
611aea7d
JM		 2986 wpa_s->conf->changed_parameters = 0;
2987}
2f9c6aa6
JM		 2988
2989
0fb337c1
JM		 2990static void add_freq(int *freqs, int *num_freqs, int freq)
2991{
2992 int i;
2993
2994 for (i = 0; i < *num_freqs; i++) {
2995 if (freqs[i] == freq)
2996 return;
2997 }
2998
2999 freqs[*num_freqs] = freq;
3000 (*num_freqs)++;
3001}
3002
3003
3004static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
3005{
3006 struct wpa_bss *bss, *cbss;
3007 const int max_freqs = 10;
3008 int *freqs;
3009 int num_freqs = 0;
3010
3011 freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
3012 if (freqs == NULL)
3013 return NULL;
3014
3015 cbss = wpa_s->current_bss;
3016
3017 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
3018 if (bss == cbss)
3019 continue;
3020 if (bss->ssid_len == cbss->ssid_len &&
3021 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
3022 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
3023 add_freq(freqs, &num_freqs, bss->freq);
3024 if (num_freqs == max_freqs)
3025 break;
3026 }
3027 }
3028
3029 if (num_freqs == 0) {
3030 os_free(freqs);
3031 freqs = NULL;
3032 }
3033
3034 return freqs;
3035}
3036
3037
3038void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
3039{
3040 int timeout;
3041 int count;
3042 int *freqs = NULL;
3043
5fd9fb27
JM		 3044 /*
3045 * Remove possible authentication timeout since the connection failed.
3046 */
3047 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
3048
0fb337c1
JM		 3049 /*
3050 * Add the failed BSSID into the blacklist and speed up next scan
3051 * attempt if there could be other APs that could accept association.
3052 * The current blacklist count indicates how many times we have tried
3053 * connecting to this AP and multiple attempts mean that other APs are
3054 * either not available or has already been tried, so that we can start
3055 * increasing the delay here to avoid constant scanning.
3056 */
3057 count = wpa_blacklist_add(wpa_s, bssid);
3058 if (count == 1 && wpa_s->current_bss) {
3059 /*
3060 * This BSS was not in the blacklist before. If there is
3061 * another BSS available for the same ESS, we should try that
3062 * next. Otherwise, we may as well try this one once more
3063 * before allowing other, likely worse, ESSes to be considered.
3064 */
3065 freqs = get_bss_freqs_in_ess(wpa_s);
3066 if (freqs) {
f049052b
BG		 3067 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
3068 "has been seen; try it next");
0fb337c1
JM		 3069 wpa_blacklist_add(wpa_s, bssid);
3070 /*
3071 * On the next scan, go through only the known channels
3072 * used in this ESS based on previous scans to speed up
3073 * common load balancing use case.
3074 */
3075 os_free(wpa_s->next_scan_freqs);
3076 wpa_s->next_scan_freqs = freqs;
3077 }
3078 }
3079
3080 switch (count) {
3081 case 1:
3082 timeout = 100;
3083 break;
3084 case 2:
3085 timeout = 500;
3086 break;
3087 case 3:
3088 timeout = 1000;
3089 break;
3090 default:
3091 timeout = 5000;
3092 }
3093
3094 /*
3095 * TODO: if more than one possible AP is available in scan results,
3096 * could try the other ones before requesting a new scan.
3097 */
3098 wpa_supplicant_req_scan(wpa_s, timeout / 1000,
3099 1000 * (timeout % 1000));
3100}
22628eca
JM		 3101
3102
3103int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s)
3104{
3105 return wpa_s->conf->ap_scan == 2 ||
3106 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION);
3107}
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